diff options
Diffstat (limited to 'drivers/media/radio')
52 files changed, 22216 insertions, 0 deletions
diff --git a/drivers/media/radio/Kconfig b/drivers/media/radio/Kconfig new file mode 100644 index 0000000..86984e0 --- /dev/null +++ b/drivers/media/radio/Kconfig @@ -0,0 +1,528 @@ +# +# Multimedia Video device configuration +# + +menuconfig RADIO_ADAPTERS + bool "Radio Adapters" + depends on VIDEO_V4L2 + depends on MEDIA_RADIO_SUPPORT + default y + ---help--- + Say Y here to enable selecting AM/FM radio adapters. + +if RADIO_ADAPTERS && VIDEO_V4L2 + +config RADIO_SI470X + bool "Silicon Labs Si470x FM Radio Receiver support" + depends on VIDEO_V4L2 + +source "drivers/media/radio/si470x/Kconfig" + +config RADIO_SI476X + tristate "Silicon Laboratories Si476x I2C FM Radio" + depends on m + depends on I2C && VIDEO_V4L2 + depends on MFD_SI476X_CORE + depends on SND_SOC + depends on SND_SOC_SI476X + ---help--- + Choose Y here if you have this FM radio chip. + + In order to control your radio card, you will need to use programs + that are compatible with the Video For Linux 2 API. Information on + this API and pointers to "v4l2" programs may be found at + <file:Documentation/video4linux/API.html>. + + To compile this driver as a module, choose M here: the + module will be called radio-si476x. + +config USB_MR800 + tristate "AverMedia MR 800 USB FM radio support" + depends on m + depends on USB && VIDEO_V4L2 + ---help--- + Say Y here if you want to connect this type of radio to your + computer's USB port. Note that the audio is not digital, and + you must connect the line out connector to a sound card or a + set of speakers. + + To compile this driver as a module, choose M here: the + module will be called radio-mr800. + +config USB_DSBR + tristate "D-Link/GemTek USB FM radio support" + depends on m + depends on USB && VIDEO_V4L2 + ---help--- + Say Y here if you want to connect this type of radio to your + computer's USB port. Note that the audio is not digital, and + you must connect the line out connector to a sound card or a + set of speakers. + + To compile this driver as a module, choose M here: the + module will be called dsbr100. + +config RADIO_MAXIRADIO + depends on BACKPORT_DISABLED_KCONFIG_OPTION + tristate "Guillemot MAXI Radio FM 2000 radio" + depends on m + depends on VIDEO_V4L2 && PCI && SND + ---help--- + Choose Y here if you have this radio card. This card may also be + found as Gemtek PCI FM. + + In order to control your radio card, you will need to use programs + that are compatible with the Video For Linux API. Information on + this API and pointers to "v4l" programs may be found at + <file:Documentation/video4linux/API.html>. + + To compile this driver as a module, choose M here: the + module will be called radio-maxiradio. + +config RADIO_SHARK + depends on BACKPORT_DISABLED_KCONFIG_OPTION + tristate "Griffin radioSHARK USB radio receiver" + depends on m + depends on USB && SND + ---help--- + Choose Y here if you have this radio receiver. + + There are 2 versions of this device, this driver is for version 1, + which is white. + + In order to control your radio card, you will need to use programs + that are compatible with the Video For Linux API. Information on + this API and pointers to "v4l" programs may be found at + <file:Documentation/video4linux/API.html>. + + To compile this driver as a module, choose M here: the + module will be called radio-shark. + +config RADIO_SHARK2 + tristate "Griffin radioSHARK2 USB radio receiver" + depends on m + depends on USB + ---help--- + Choose Y here if you have this radio receiver. + + There are 2 versions of this device, this driver is for version 2, + which is black. + + In order to control your radio card, you will need to use programs + that are compatible with the Video For Linux API. Information on + this API and pointers to "v4l" programs may be found at + <file:Documentation/video4linux/API.html>. + + To compile this driver as a module, choose M here: the + module will be called radio-shark2. + +config I2C_SI4713 + tristate "I2C driver for Silicon Labs Si4713 device" + depends on m + depends on I2C && VIDEO_V4L2 + ---help--- + Say Y here if you want support to Si4713 I2C device. + This device driver supports only i2c bus. + + To compile this driver as a module, choose M here: the + module will be called si4713. + +config RADIO_SI4713 + tristate "Silicon Labs Si4713 FM Radio Transmitter support" + depends on m + depends on I2C && VIDEO_V4L2 + select I2C_SI4713 + ---help--- + Say Y here if you want support to Si4713 FM Radio Transmitter. + This device can transmit audio through FM. It can transmit + RDS and RBDS signals as well. This module is the v4l2 radio + interface for the i2c driver of this device. + + To compile this driver as a module, choose M here: the + module will be called radio-si4713. + +config USB_KEENE + tristate "Keene FM Transmitter USB support" + depends on m + depends on USB && VIDEO_V4L2 + ---help--- + Say Y here if you want to connect this type of FM transmitter + to your computer's USB port. + + To compile this driver as a module, choose M here: the + module will be called radio-keene. + +config USB_MA901 + tristate "Masterkit MA901 USB FM radio support" + depends on m + depends on USB && VIDEO_V4L2 + ---help--- + Say Y here if you want to connect this type of radio to your + computer's USB port. Note that the audio is not digital, and + you must connect the line out connector to a sound card or a + set of speakers or headphones. + + To compile this driver as a module, choose M here: the + module will be called radio-ma901. + +config RADIO_TEA5764 + tristate "TEA5764 I2C FM radio support" + depends on m + depends on I2C && VIDEO_V4L2 + ---help--- + Say Y here if you want to use the TEA5764 FM chip found in + EZX phones. This FM chip is present in EZX phones from Motorola, + connected to internal pxa I2C bus. + + To compile this driver as a module, choose M here: the + module will be called radio-tea5764. + +config RADIO_TEA5764_XTAL + bool "TEA5764 crystal reference" + depends on RADIO_TEA5764=y + default y + help + Say Y here if TEA5764 have a 32768 Hz crystal in circuit, say N + here if TEA5764 reference frequency is connected in FREQIN. + +config RADIO_SAA7706H + tristate "SAA7706H Car Radio DSP" + depends on m + depends on I2C && VIDEO_V4L2 + ---help--- + Say Y here if you want to use the SAA7706H Car radio Digital + Signal Processor, found for instance on the Russellville development + board. On the russellville the device is connected to internal + timberdale I2C bus. + + To compile this driver as a module, choose M here: the + module will be called SAA7706H. + +config RADIO_TEF6862 + tristate "TEF6862 Car Radio Enhanced Selectivity Tuner" + depends on m + depends on I2C && VIDEO_V4L2 + ---help--- + Say Y here if you want to use the TEF6862 Car Radio Enhanced + Selectivity Tuner, found for instance on the Russellville development + board. On the russellville the device is connected to internal + timberdale I2C bus. + + To compile this driver as a module, choose M here: the + module will be called TEF6862. + +config RADIO_TIMBERDALE + tristate "Enable the Timberdale radio driver" + depends on m + depends on MFD_TIMBERDALE && VIDEO_V4L2 + depends on I2C # for RADIO_SAA7706H + select RADIO_TEF6862 + select RADIO_SAA7706H + ---help--- + This is a kind of umbrella driver for the Radio Tuner and DSP + found behind the Timberdale FPGA on the Russellville board. + Enabling this driver will automatically select the DSP and tuner. + +config RADIO_WL1273 + tristate "Texas Instruments WL1273 I2C FM Radio" + depends on m + depends on I2C && VIDEO_V4L2 && GENERIC_HARDIRQS + depends on MFD_CORE + depends on MFD_WL1273_CORE + select BACKPORT_FW_LOADER + ---help--- + Choose Y here if you have this FM radio chip. + + In order to control your radio card, you will need to use programs + that are compatible with the Video For Linux 2 API. Information on + this API and pointers to "v4l2" programs may be found at + <file:Documentation/video4linux/API.html>. + + To compile this driver as a module, choose M here: the + module will be called radio-wl1273. + +# TI's ST based wl128x FM radio +source "drivers/media/radio/wl128x/Kconfig" + +# +# ISA drivers configuration +# + +menuconfig V4L_RADIO_ISA_DRIVERS + bool "ISA radio devices" + depends on ISA + default n + ---help--- + Say Y here to enable support for these ISA drivers. + +if V4L_RADIO_ISA_DRIVERS + +config RADIO_ISA + depends on ISA + tristate + depends on m + +config RADIO_CADET + tristate "ADS Cadet AM/FM Tuner" + depends on m + depends on ISA && VIDEO_V4L2 + ---help--- + Choose Y here if you have one of these AM/FM radio cards, and then + fill in the port address below. + + To compile this driver as a module, choose M here: the + module will be called radio-cadet. + +config RADIO_RTRACK + tristate "AIMSlab RadioTrack (aka RadioReveal) support" + depends on m + depends on ISA && VIDEO_V4L2 + select RADIO_ISA + ---help--- + Choose Y here if you have one of these FM radio cards, and then fill + in the port address below. + + Note that newer AIMSlab RadioTrack cards have a different chipset + and are not supported by this driver. For these cards, use the + RadioTrack II driver below. + + If you have a GemTeks combined (PnP) sound- and radio card you must + use this driver as a module and setup the card with isapnptools. + You must also pass the module a suitable io parameter, 0x248 has + been reported to be used by these cards. + + More information is contained in the file + <file:Documentation/video4linux/radiotrack.txt>. + + To compile this driver as a module, choose M here: the + module will be called radio-aimslab. + +config RADIO_RTRACK_PORT + hex "RadioTrack i/o port (0x20f or 0x30f)" + depends on RADIO_RTRACK=y + default "30f" + help + Enter either 0x30f or 0x20f here. The card default is 0x30f, if you + haven't changed the jumper setting on the card. + +config RADIO_RTRACK2 + tristate "AIMSlab RadioTrack II support" + depends on m + depends on ISA && VIDEO_V4L2 + select RADIO_ISA + ---help--- + Choose Y here if you have this FM radio card, and then fill in the + port address below. + + Note: this driver hasn't been tested since a long time due to lack + of hardware. If you have this hardware, then please contact the + linux-media mailinglist. + + To compile this driver as a module, choose M here: the + module will be called radio-rtrack2. + +config RADIO_RTRACK2_PORT + hex "RadioTrack II i/o port (0x20c or 0x30c)" + depends on RADIO_RTRACK2=y + default "30c" + help + Enter either 0x30c or 0x20c here. The card default is 0x30c, if you + haven't changed the jumper setting on the card. + +config RADIO_AZTECH + tristate "Aztech/Packard Bell Radio" + depends on m + depends on ISA && VIDEO_V4L2 + select RADIO_ISA + ---help--- + Choose Y here if you have one of these FM radio cards, and then fill + in the port address below. + + To compile this driver as a module, choose M here: the + module will be called radio-aztech. + +config RADIO_AZTECH_PORT + hex "Aztech/Packard Bell I/O port (0x350 or 0x358)" + depends on RADIO_AZTECH=y + default "350" + help + Enter either 0x350 or 0x358 here. The card default is 0x350, if you + haven't changed the setting of jumper JP3 on the card. Removing the + jumper sets the card to 0x358. + +config RADIO_GEMTEK + tristate "GemTek Radio card (or compatible) support" + depends on m + depends on ISA && VIDEO_V4L2 + select RADIO_ISA + ---help--- + Choose Y here if you have this FM radio card, and then fill in the + I/O port address and settings below. The following cards either have + GemTek Radio tuner or are rebranded GemTek Radio cards: + + - Sound Vision 16 Gold with FM Radio + - Typhoon Radio card (some models) + - Hama Radio card + + To compile this driver as a module, choose M here: the + module will be called radio-gemtek. + +config RADIO_GEMTEK_PORT + hex "Fixed I/O port (0x20c, 0x30c, 0x24c, 0x34c, 0x248 or 0x28c)" + depends on RADIO_GEMTEK=y + default "34c" + help + Enter either 0x20c, 0x30c, 0x24c, 0x34c, 0x248 or 0x28c here. The + card default is 0x34c, if you haven't changed the jumper setting + on the card. + + On Sound Vision 16 Gold PnP with FM Radio (ESS1869+FM Gemtek), the I/O + port is 0x20c, 0x248 or 0x28c. + + If automatic I/O port probing is enabled this port will be used only + in case of automatic probing failure, ie. as a fallback. + +config RADIO_GEMTEK_PROBE + bool "Automatic I/O port probing" + depends on RADIO_GEMTEK=y + default y + help + Say Y here to enable automatic probing for GemTek Radio card. The + following ports will be probed: 0x20c, 0x30c, 0x24c, 0x34c, 0x248 and + 0x28c. + +config RADIO_MIROPCM20 + tristate "miroSOUND PCM20 radio" + depends on m + depends on ISA && ISA_DMA_API && VIDEO_V4L2 && SND + depends on SND_ISA + depends on SND_MIRO + ---help--- + Choose Y here if you have this FM radio card. You also need to enable + the ALSA sound system. This choice automatically selects the ALSA + sound card driver "Miro miroSOUND PCM1pro/PCM12/PCM20radio" as this + is required for the radio-miropcm20. + + To compile this driver as a module, choose M here: the + module will be called radio-miropcm20. + +config RADIO_SF16FMI + tristate "SF16-FMI/SF16-FMP/SF16-FMD Radio" + depends on m + depends on ISA && VIDEO_V4L2 + ---help--- + Choose Y here if you have one of these FM radio cards. + + To compile this driver as a module, choose M here: the + module will be called radio-sf16fmi. + +config RADIO_SF16FMR2 + tristate "SF16-FMR2/SF16-FMD2 Radio" + depends on m + depends on ISA && VIDEO_V4L2 && SND + ---help--- + Choose Y here if you have one of these FM radio cards. + + To compile this driver as a module, choose M here: the + module will be called radio-sf16fmr2. + +config RADIO_TERRATEC + tristate "TerraTec ActiveRadio ISA Standalone" + depends on m + depends on ISA && VIDEO_V4L2 + select RADIO_ISA + ---help--- + Choose Y here if you have this FM radio card. + + Note: this driver hasn't been tested since a long time due to lack + of hardware. If you have this hardware, then please contact the + linux-media mailinglist. + + To compile this driver as a module, choose M here: the + module will be called radio-terratec. + +config RADIO_TRUST + tristate "Trust FM radio card" + depends on m + depends on ISA && VIDEO_V4L2 + select RADIO_ISA + help + This is a driver for the Trust FM radio cards. Say Y if you have + such a card and want to use it under Linux. + + Note: this driver hasn't been tested since a long time due to lack + of hardware. If you have this hardware, then please contact the + linux-media mailinglist. + + To compile this driver as a module, choose M here: the + module will be called radio-trust. + +config RADIO_TRUST_PORT + hex "Trust i/o port (usually 0x350 or 0x358)" + depends on RADIO_TRUST=y + default "350" + help + Enter the I/O port of your Trust FM radio card. If unsure, try the + values "0x350" or "0x358". + +config RADIO_TYPHOON + tristate "Typhoon Radio (a.k.a. EcoRadio)" + depends on m + depends on ISA && VIDEO_V4L2 + select RADIO_ISA + ---help--- + Choose Y here if you have one of these FM radio cards, and then fill + in the port address and the frequency used for muting below. + + Note: this driver hasn't been tested since a long time due to lack + of hardware. If you have this hardware, then please contact the + linux-media mailinglist. + + To compile this driver as a module, choose M here: the + module will be called radio-typhoon. + +config RADIO_TYPHOON_PORT + hex "Typhoon I/O port (0x316 or 0x336)" + depends on RADIO_TYPHOON=y + default "316" + help + Enter the I/O port of your Typhoon or EcoRadio radio card. + +config RADIO_TYPHOON_MUTEFREQ + int "Typhoon frequency set when muting the device (kHz)" + depends on RADIO_TYPHOON=y + default "87500" + help + Enter the frequency used for muting the radio. The device is never + completely silent. If the volume is just turned down, you can still + hear silent voices and music. For that reason, the frequency of the + radio device is set to the frequency you can enter here whenever + the device is muted. There should be no local radio station at that + frequency. + +config RADIO_ZOLTRIX + tristate "Zoltrix Radio" + depends on m + depends on ISA && VIDEO_V4L2 + select RADIO_ISA + ---help--- + Choose Y here if you have one of these FM radio cards, and then fill + in the port address below. + + Note: this driver hasn't been tested since a long time due to lack + of hardware. If you have this hardware, then please contact the + linux-media mailinglist. + + To compile this driver as a module, choose M here: the + module will be called radio-zoltrix. + +config RADIO_ZOLTRIX_PORT + hex "ZOLTRIX I/O port (0x20c or 0x30c)" + depends on RADIO_ZOLTRIX=y + default "20c" + help + Enter the I/O port of your Zoltrix radio card. + +endif # V4L_RADIO_ISA_DRIVERS + +endif # RADIO_ADAPTERS diff --git a/drivers/media/radio/Makefile b/drivers/media/radio/Makefile new file mode 100644 index 0000000..64d1b61 --- /dev/null +++ b/drivers/media/radio/Makefile @@ -0,0 +1,38 @@ +# +# Makefile for the kernel character device drivers. +# + +obj-$(CPTCFG_RADIO_ISA) += radio-isa.o +obj-$(CPTCFG_RADIO_AZTECH) += radio-aztech.o +obj-$(CPTCFG_RADIO_RTRACK2) += radio-rtrack2.o +obj-$(CPTCFG_RADIO_SF16FMI) += radio-sf16fmi.o +obj-$(CPTCFG_RADIO_SF16FMR2) += radio-sf16fmr2.o +obj-$(CPTCFG_RADIO_CADET) += radio-cadet.o +obj-$(CPTCFG_RADIO_TYPHOON) += radio-typhoon.o +obj-$(CPTCFG_RADIO_TERRATEC) += radio-terratec.o +obj-$(CPTCFG_RADIO_MAXIRADIO) += radio-maxiradio.o +obj-$(CPTCFG_RADIO_SHARK) += radio-shark.o +obj-$(CPTCFG_RADIO_SHARK2) += shark2.o +obj-$(CPTCFG_RADIO_RTRACK) += radio-aimslab.o +obj-$(CPTCFG_RADIO_ZOLTRIX) += radio-zoltrix.o +obj-$(CPTCFG_RADIO_GEMTEK) += radio-gemtek.o +obj-$(CPTCFG_RADIO_TRUST) += radio-trust.o +obj-$(CPTCFG_I2C_SI4713) += si4713-i2c.o +obj-$(CPTCFG_RADIO_SI4713) += radio-si4713.o +obj-$(CPTCFG_RADIO_SI476X) += radio-si476x.o +obj-$(CPTCFG_RADIO_MIROPCM20) += radio-miropcm20.o +obj-$(CPTCFG_USB_DSBR) += dsbr100.o +obj-$(CPTCFG_RADIO_SI470X) += si470x/ +obj-$(CPTCFG_USB_MR800) += radio-mr800.o +obj-$(CPTCFG_USB_KEENE) += radio-keene.o +obj-$(CPTCFG_USB_MA901) += radio-ma901.o +obj-$(CPTCFG_RADIO_TEA5764) += radio-tea5764.o +obj-$(CPTCFG_RADIO_SAA7706H) += saa7706h.o +obj-$(CPTCFG_RADIO_TEF6862) += tef6862.o +obj-$(CPTCFG_RADIO_TIMBERDALE) += radio-timb.o +obj-$(CPTCFG_RADIO_WL1273) += radio-wl1273.o +obj-$(CPTCFG_RADIO_WL128X) += wl128x/ + +shark2-objs := radio-shark2.o radio-tea5777.o + +ccflags-y += -Isound diff --git a/drivers/media/radio/dsbr100.c b/drivers/media/radio/dsbr100.c new file mode 100644 index 0000000..142c2ee --- /dev/null +++ b/drivers/media/radio/dsbr100.c @@ -0,0 +1,434 @@ +/* A driver for the D-Link DSB-R100 USB radio and Gemtek USB Radio 21. + * The device plugs into both the USB and an analog audio input, so this thing + * only deals with initialisation and frequency setting, the + * audio data has to be handled by a sound driver. + * + * Major issue: I can't find out where the device reports the signal + * strength, and indeed the windows software appearantly just looks + * at the stereo indicator as well. So, scanning will only find + * stereo stations. Sad, but I can't help it. + * + * Also, the windows program sends oodles of messages over to the + * device, and I couldn't figure out their meaning. My suspicion + * is that they don't have any:-) + * + * You might find some interesting stuff about this module at + * http://unimut.fsk.uni-heidelberg.de/unimut/demi/dsbr + * + * Fully tested with the Keene USB FM Transmitter and the v4l2-compliance tool. + * + * Copyright (c) 2000 Markus Demleitner <msdemlei@cl.uni-heidelberg.de> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +*/ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/slab.h> +#include <linux/input.h> +#include <linux/videodev2.h> +#include <linux/usb.h> +#include <media/v4l2-device.h> +#include <media/v4l2-ioctl.h> +#include <media/v4l2-ctrls.h> +#include <media/v4l2-event.h> + +/* + * Version Information + */ +MODULE_AUTHOR("Markus Demleitner <msdemlei@tucana.harvard.edu>"); +MODULE_DESCRIPTION("D-Link DSB-R100 USB FM radio driver"); +MODULE_LICENSE("GPL"); +MODULE_VERSION("1.1.0"); + +#define DSB100_VENDOR 0x04b4 +#define DSB100_PRODUCT 0x1002 + +/* Commands the device appears to understand */ +#define DSB100_TUNE 1 +#define DSB100_ONOFF 2 + +#define TB_LEN 16 + +/* Frequency limits in MHz -- these are European values. For Japanese +devices, that would be 76 and 91. */ +#define FREQ_MIN 87.5 +#define FREQ_MAX 108.0 +#define FREQ_MUL 16000 + +#define v4l2_dev_to_radio(d) container_of(d, struct dsbr100_device, v4l2_dev) + +static int radio_nr = -1; +module_param(radio_nr, int, 0); + +/* Data for one (physical) device */ +struct dsbr100_device { + struct usb_device *usbdev; + struct video_device videodev; + struct v4l2_device v4l2_dev; + struct v4l2_ctrl_handler hdl; + + u8 *transfer_buffer; + struct mutex v4l2_lock; + int curfreq; + bool stereo; + bool muted; +}; + +/* Low-level device interface begins here */ + +/* set a frequency, freq is defined by v4l's TUNER_LOW, i.e. 1/16th kHz */ +static int dsbr100_setfreq(struct dsbr100_device *radio, unsigned freq) +{ + unsigned f = (freq / 16 * 80) / 1000 + 856; + int retval = 0; + + if (!radio->muted) { + retval = usb_control_msg(radio->usbdev, + usb_rcvctrlpipe(radio->usbdev, 0), + DSB100_TUNE, + USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, + (f >> 8) & 0x00ff, f & 0xff, + radio->transfer_buffer, 8, 300); + if (retval >= 0) + mdelay(1); + } + + if (retval >= 0) { + radio->curfreq = freq; + return 0; + } + dev_err(&radio->usbdev->dev, + "%s - usb_control_msg returned %i, request %i\n", + __func__, retval, DSB100_TUNE); + return retval; +} + +/* switch on radio */ +static int dsbr100_start(struct dsbr100_device *radio) +{ + int retval = usb_control_msg(radio->usbdev, + usb_rcvctrlpipe(radio->usbdev, 0), + DSB100_ONOFF, + USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, + 0x01, 0x00, radio->transfer_buffer, 8, 300); + + if (retval >= 0) + return dsbr100_setfreq(radio, radio->curfreq); + dev_err(&radio->usbdev->dev, + "%s - usb_control_msg returned %i, request %i\n", + __func__, retval, DSB100_ONOFF); + return retval; + +} + +/* switch off radio */ +static int dsbr100_stop(struct dsbr100_device *radio) +{ + int retval = usb_control_msg(radio->usbdev, + usb_rcvctrlpipe(radio->usbdev, 0), + DSB100_ONOFF, + USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, + 0x00, 0x00, radio->transfer_buffer, 8, 300); + + if (retval >= 0) + return 0; + dev_err(&radio->usbdev->dev, + "%s - usb_control_msg returned %i, request %i\n", + __func__, retval, DSB100_ONOFF); + return retval; + +} + +/* return the device status. This is, in effect, just whether it +sees a stereo signal or not. Pity. */ +static void dsbr100_getstat(struct dsbr100_device *radio) +{ + int retval = usb_control_msg(radio->usbdev, + usb_rcvctrlpipe(radio->usbdev, 0), + USB_REQ_GET_STATUS, + USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, + 0x00, 0x24, radio->transfer_buffer, 8, 300); + + if (retval < 0) { + radio->stereo = false; + dev_err(&radio->usbdev->dev, + "%s - usb_control_msg returned %i, request %i\n", + __func__, retval, USB_REQ_GET_STATUS); + } else { + radio->stereo = !(radio->transfer_buffer[0] & 0x01); + } +} + +static int vidioc_querycap(struct file *file, void *priv, + struct v4l2_capability *v) +{ + struct dsbr100_device *radio = video_drvdata(file); + + strlcpy(v->driver, "dsbr100", sizeof(v->driver)); + strlcpy(v->card, "D-Link R-100 USB FM Radio", sizeof(v->card)); + usb_make_path(radio->usbdev, v->bus_info, sizeof(v->bus_info)); + v->device_caps = V4L2_CAP_RADIO | V4L2_CAP_TUNER; + v->capabilities = v->device_caps | V4L2_CAP_DEVICE_CAPS; + return 0; +} + +static int vidioc_g_tuner(struct file *file, void *priv, + struct v4l2_tuner *v) +{ + struct dsbr100_device *radio = video_drvdata(file); + + if (v->index > 0) + return -EINVAL; + + dsbr100_getstat(radio); + strcpy(v->name, "FM"); + v->type = V4L2_TUNER_RADIO; + v->rangelow = FREQ_MIN * FREQ_MUL; + v->rangehigh = FREQ_MAX * FREQ_MUL; + v->rxsubchans = radio->stereo ? V4L2_TUNER_SUB_STEREO : + V4L2_TUNER_SUB_MONO; + v->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO; + v->audmode = V4L2_TUNER_MODE_STEREO; + v->signal = radio->stereo ? 0xffff : 0; /* We can't get the signal strength */ + return 0; +} + +static int vidioc_s_tuner(struct file *file, void *priv, + const struct v4l2_tuner *v) +{ + return v->index ? -EINVAL : 0; +} + +static int vidioc_s_frequency(struct file *file, void *priv, + const struct v4l2_frequency *f) +{ + struct dsbr100_device *radio = video_drvdata(file); + + if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO) + return -EINVAL; + + return dsbr100_setfreq(radio, clamp_t(unsigned, f->frequency, + FREQ_MIN * FREQ_MUL, FREQ_MAX * FREQ_MUL)); +} + +static int vidioc_g_frequency(struct file *file, void *priv, + struct v4l2_frequency *f) +{ + struct dsbr100_device *radio = video_drvdata(file); + + if (f->tuner) + return -EINVAL; + f->type = V4L2_TUNER_RADIO; + f->frequency = radio->curfreq; + return 0; +} + +static int usb_dsbr100_s_ctrl(struct v4l2_ctrl *ctrl) +{ + struct dsbr100_device *radio = + container_of(ctrl->handler, struct dsbr100_device, hdl); + + switch (ctrl->id) { + case V4L2_CID_AUDIO_MUTE: + radio->muted = ctrl->val; + return radio->muted ? dsbr100_stop(radio) : dsbr100_start(radio); + } + return -EINVAL; +} + + +/* USB subsystem interface begins here */ + +/* + * Handle unplugging of the device. + * We call video_unregister_device in any case. + * The last function called in this procedure is + * usb_dsbr100_video_device_release + */ +static void usb_dsbr100_disconnect(struct usb_interface *intf) +{ + struct dsbr100_device *radio = usb_get_intfdata(intf); + + mutex_lock(&radio->v4l2_lock); + /* + * Disconnect is also called on unload, and in that case we need to + * mute the device. This call will silently fail if it is called + * after a physical disconnect. + */ + usb_control_msg(radio->usbdev, + usb_rcvctrlpipe(radio->usbdev, 0), + DSB100_ONOFF, + USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, + 0x00, 0x00, radio->transfer_buffer, 8, 300); + usb_set_intfdata(intf, NULL); + video_unregister_device(&radio->videodev); + v4l2_device_disconnect(&radio->v4l2_dev); + mutex_unlock(&radio->v4l2_lock); + v4l2_device_put(&radio->v4l2_dev); +} + + +/* Suspend device - stop device. */ +static int usb_dsbr100_suspend(struct usb_interface *intf, pm_message_t message) +{ + struct dsbr100_device *radio = usb_get_intfdata(intf); + + mutex_lock(&radio->v4l2_lock); + if (!radio->muted && dsbr100_stop(radio) < 0) + dev_warn(&intf->dev, "dsbr100_stop failed\n"); + mutex_unlock(&radio->v4l2_lock); + + dev_info(&intf->dev, "going into suspend..\n"); + return 0; +} + +/* Resume device - start device. */ +static int usb_dsbr100_resume(struct usb_interface *intf) +{ + struct dsbr100_device *radio = usb_get_intfdata(intf); + + mutex_lock(&radio->v4l2_lock); + if (!radio->muted && dsbr100_start(radio) < 0) + dev_warn(&intf->dev, "dsbr100_start failed\n"); + mutex_unlock(&radio->v4l2_lock); + + dev_info(&intf->dev, "coming out of suspend..\n"); + return 0; +} + +/* free data structures */ +static void usb_dsbr100_release(struct v4l2_device *v4l2_dev) +{ + struct dsbr100_device *radio = v4l2_dev_to_radio(v4l2_dev); + + v4l2_ctrl_handler_free(&radio->hdl); + v4l2_device_unregister(&radio->v4l2_dev); + kfree(radio->transfer_buffer); + kfree(radio); +} + +static const struct v4l2_ctrl_ops usb_dsbr100_ctrl_ops = { + .s_ctrl = usb_dsbr100_s_ctrl, +}; + +/* File system interface */ +static const struct v4l2_file_operations usb_dsbr100_fops = { + .owner = THIS_MODULE, + .unlocked_ioctl = video_ioctl2, + .open = v4l2_fh_open, + .release = v4l2_fh_release, + .poll = v4l2_ctrl_poll, +}; + +static const struct v4l2_ioctl_ops usb_dsbr100_ioctl_ops = { + .vidioc_querycap = vidioc_querycap, + .vidioc_g_tuner = vidioc_g_tuner, + .vidioc_s_tuner = vidioc_s_tuner, + .vidioc_g_frequency = vidioc_g_frequency, + .vidioc_s_frequency = vidioc_s_frequency, + .vidioc_log_status = v4l2_ctrl_log_status, + .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, + .vidioc_unsubscribe_event = v4l2_event_unsubscribe, +}; + +/* check if the device is present and register with v4l and usb if it is */ +static int usb_dsbr100_probe(struct usb_interface *intf, + const struct usb_device_id *id) +{ + struct dsbr100_device *radio; + struct v4l2_device *v4l2_dev; + int retval; + + radio = kzalloc(sizeof(struct dsbr100_device), GFP_KERNEL); + + if (!radio) + return -ENOMEM; + + radio->transfer_buffer = kmalloc(TB_LEN, GFP_KERNEL); + + if (!(radio->transfer_buffer)) { + kfree(radio); + return -ENOMEM; + } + + v4l2_dev = &radio->v4l2_dev; + v4l2_dev->release = usb_dsbr100_release; + + retval = v4l2_device_register(&intf->dev, v4l2_dev); + if (retval < 0) { + v4l2_err(v4l2_dev, "couldn't register v4l2_device\n"); + goto err_reg_dev; + } + + v4l2_ctrl_handler_init(&radio->hdl, 1); + v4l2_ctrl_new_std(&radio->hdl, &usb_dsbr100_ctrl_ops, + V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1); + if (radio->hdl.error) { + retval = radio->hdl.error; + v4l2_err(v4l2_dev, "couldn't register control\n"); + goto err_reg_ctrl; + } + mutex_init(&radio->v4l2_lock); + strlcpy(radio->videodev.name, v4l2_dev->name, sizeof(radio->videodev.name)); + radio->videodev.v4l2_dev = v4l2_dev; + radio->videodev.fops = &usb_dsbr100_fops; + radio->videodev.ioctl_ops = &usb_dsbr100_ioctl_ops; + radio->videodev.release = video_device_release_empty; + radio->videodev.lock = &radio->v4l2_lock; + radio->videodev.ctrl_handler = &radio->hdl; + set_bit(V4L2_FL_USE_FH_PRIO, &radio->videodev.flags); + + radio->usbdev = interface_to_usbdev(intf); + radio->curfreq = FREQ_MIN * FREQ_MUL; + radio->muted = true; + + video_set_drvdata(&radio->videodev, radio); + usb_set_intfdata(intf, radio); + + retval = video_register_device(&radio->videodev, VFL_TYPE_RADIO, radio_nr); + if (retval == 0) + return 0; + v4l2_err(v4l2_dev, "couldn't register video device\n"); + +err_reg_ctrl: + v4l2_ctrl_handler_free(&radio->hdl); + v4l2_device_unregister(v4l2_dev); +err_reg_dev: + kfree(radio->transfer_buffer); + kfree(radio); + return retval; +} + +static struct usb_device_id usb_dsbr100_device_table[] = { + { USB_DEVICE(DSB100_VENDOR, DSB100_PRODUCT) }, + { } /* Terminating entry */ +}; + +MODULE_DEVICE_TABLE(usb, usb_dsbr100_device_table); + +/* USB subsystem interface */ +static struct usb_driver usb_dsbr100_driver = { + .name = "dsbr100", + .probe = usb_dsbr100_probe, + .disconnect = usb_dsbr100_disconnect, + .id_table = usb_dsbr100_device_table, + .suspend = usb_dsbr100_suspend, + .resume = usb_dsbr100_resume, + .reset_resume = usb_dsbr100_resume, +}; + +module_usb_driver(usb_dsbr100_driver); diff --git a/drivers/media/radio/lm7000.h b/drivers/media/radio/lm7000.h new file mode 100644 index 0000000..139cd6b --- /dev/null +++ b/drivers/media/radio/lm7000.h @@ -0,0 +1,43 @@ +#ifndef __LM7000_H +#define __LM7000_H + +/* Sanyo LM7000 tuner chip control + * + * Copyright 2012 Ondrej Zary <linux@rainbow-software.org> + * based on radio-aimslab.c by M. Kirkwood + * and radio-sf16fmi.c by M. Kirkwood and Petr Vandrovec + */ + +#define LM7000_DATA (1 << 0) +#define LM7000_CLK (1 << 1) +#define LM7000_CE (1 << 2) + +#define LM7000_FM_100 (0 << 20) +#define LM7000_FM_50 (1 << 20) +#define LM7000_FM_25 (2 << 20) +#define LM7000_BIT_FM (1 << 23) + +static inline void lm7000_set_freq(u32 freq, void *handle, + void (*set_pins)(void *handle, u8 pins)) +{ + int i; + u8 data; + u32 val; + + freq += 171200; /* Add 10.7 MHz IF */ + freq /= 400; /* Convert to 25 kHz units */ + val = freq | LM7000_FM_25 | LM7000_BIT_FM; + /* write the 24-bit register, starting with LSB */ + for (i = 0; i < 24; i++) { + data = val & (1 << i) ? LM7000_DATA : 0; + set_pins(handle, data | LM7000_CE); + udelay(2); + set_pins(handle, data | LM7000_CE | LM7000_CLK); + udelay(2); + set_pins(handle, data | LM7000_CE); + udelay(2); + } + set_pins(handle, 0); +} + +#endif /* __LM7000_H */ diff --git a/drivers/media/radio/radio-aimslab.c b/drivers/media/radio/radio-aimslab.c new file mode 100644 index 0000000..8b7e337 --- /dev/null +++ b/drivers/media/radio/radio-aimslab.c @@ -0,0 +1,194 @@ +/* + * AimsLab RadioTrack (aka RadioVeveal) driver + * + * Copyright 1997 M. Kirkwood + * + * Converted to the radio-isa framework by Hans Verkuil <hans.verkuil@cisco.com> + * Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org> + * Converted to new API by Alan Cox <alan@lxorguk.ukuu.org.uk> + * Various bugfixes and enhancements by Russell Kroll <rkroll@exploits.org> + * + * Notes on the hardware (reverse engineered from other peoples' + * reverse engineering of AIMS' code :-) + * + * Frequency control is done digitally -- ie out(port,encodefreq(95.8)); + * + * The signal strength query is unsurprisingly inaccurate. And it seems + * to indicate that (on my card, at least) the frequency setting isn't + * too great. (I have to tune up .025MHz from what the freq should be + * to get a report that the thing is tuned.) + * + * Volume control is (ugh) analogue: + * out(port, start_increasing_volume); + * wait(a_wee_while); + * out(port, stop_changing_the_volume); + * + * Fully tested with the Keene USB FM Transmitter and the v4l2-compliance tool. + */ + +#include <linux/module.h> /* Modules */ +#include <linux/init.h> /* Initdata */ +#include <linux/ioport.h> /* request_region */ +#include <linux/delay.h> /* msleep */ +#include <linux/videodev2.h> /* kernel radio structs */ +#include <linux/io.h> /* outb, outb_p */ +#include <linux/slab.h> +#include <media/v4l2-device.h> +#include <media/v4l2-ioctl.h> +#include <media/v4l2-ctrls.h> +#include "radio-isa.h" +#include "lm7000.h" + +MODULE_AUTHOR("M. Kirkwood"); +MODULE_DESCRIPTION("A driver for the RadioTrack/RadioReveal radio card."); +MODULE_LICENSE("GPL"); +MODULE_VERSION("1.0.0"); + +#ifndef CPTCFG_RADIO_RTRACK_PORT +#define CPTCFG_RADIO_RTRACK_PORT -1 +#endif + +#define RTRACK_MAX 2 + +static int io[RTRACK_MAX] = { [0] = CPTCFG_RADIO_RTRACK_PORT, + [1 ... (RTRACK_MAX - 1)] = -1 }; +static int radio_nr[RTRACK_MAX] = { [0 ... (RTRACK_MAX - 1)] = -1 }; + +module_param_array(io, int, NULL, 0444); +MODULE_PARM_DESC(io, "I/O addresses of the RadioTrack card (0x20f or 0x30f)"); +module_param_array(radio_nr, int, NULL, 0444); +MODULE_PARM_DESC(radio_nr, "Radio device numbers"); + +struct rtrack { + struct radio_isa_card isa; + int curvol; +}; + +static struct radio_isa_card *rtrack_alloc(void) +{ + struct rtrack *rt = kzalloc(sizeof(struct rtrack), GFP_KERNEL); + + if (rt) + rt->curvol = 0xff; + return rt ? &rt->isa : NULL; +} + +#define AIMS_BIT_TUN_CE (1 << 0) +#define AIMS_BIT_TUN_CLK (1 << 1) +#define AIMS_BIT_TUN_DATA (1 << 2) +#define AIMS_BIT_VOL_CE (1 << 3) +#define AIMS_BIT_TUN_STRQ (1 << 4) +/* bit 5 is not connected */ +#define AIMS_BIT_VOL_UP (1 << 6) /* active low */ +#define AIMS_BIT_VOL_DN (1 << 7) /* active low */ + +static void rtrack_set_pins(void *handle, u8 pins) +{ + struct radio_isa_card *isa = handle; + struct rtrack *rt = container_of(isa, struct rtrack, isa); + u8 bits = AIMS_BIT_VOL_DN | AIMS_BIT_VOL_UP | AIMS_BIT_TUN_STRQ; + + if (!v4l2_ctrl_g_ctrl(rt->isa.mute)) + bits |= AIMS_BIT_VOL_CE; + + if (pins & LM7000_DATA) + bits |= AIMS_BIT_TUN_DATA; + if (pins & LM7000_CLK) + bits |= AIMS_BIT_TUN_CLK; + if (pins & LM7000_CE) + bits |= AIMS_BIT_TUN_CE; + + outb_p(bits, rt->isa.io); +} + +static int rtrack_s_frequency(struct radio_isa_card *isa, u32 freq) +{ + lm7000_set_freq(freq, isa, rtrack_set_pins); + + return 0; +} + +static u32 rtrack_g_signal(struct radio_isa_card *isa) +{ + /* bit set = no signal present */ + return 0xffff * !(inb(isa->io) & 2); +} + +static int rtrack_s_mute_volume(struct radio_isa_card *isa, bool mute, int vol) +{ + struct rtrack *rt = container_of(isa, struct rtrack, isa); + int curvol = rt->curvol; + + if (mute) { + outb(0xd0, isa->io); /* volume steady + sigstr + off */ + return 0; + } + if (vol == 0) { /* volume = 0 means mute the card */ + outb(0x48, isa->io); /* volume down but still "on" */ + msleep(curvol * 3); /* make sure it's totally down */ + } else if (curvol < vol) { + outb(0x98, isa->io); /* volume up + sigstr + on */ + for (; curvol < vol; curvol++) + udelay(3000); + } else if (curvol > vol) { + outb(0x58, isa->io); /* volume down + sigstr + on */ + for (; curvol > vol; curvol--) + udelay(3000); + } + outb(0xd8, isa->io); /* volume steady + sigstr + on */ + rt->curvol = vol; + return 0; +} + +/* Mute card - prevents noisy bootups */ +static int rtrack_initialize(struct radio_isa_card *isa) +{ + /* this ensures that the volume is all the way up */ + outb(0x90, isa->io); /* volume up but still "on" */ + msleep(3000); /* make sure it's totally up */ + outb(0xc0, isa->io); /* steady volume, mute card */ + return 0; +} + +static const struct radio_isa_ops rtrack_ops = { + .alloc = rtrack_alloc, + .init = rtrack_initialize, + .s_mute_volume = rtrack_s_mute_volume, + .s_frequency = rtrack_s_frequency, + .g_signal = rtrack_g_signal, +}; + +static const int rtrack_ioports[] = { 0x20f, 0x30f }; + +static struct radio_isa_driver rtrack_driver = { + .driver = { + .match = radio_isa_match, + .probe = radio_isa_probe, + .remove = radio_isa_remove, + .driver = { + .name = "radio-aimslab", + }, + }, + .io_params = io, + .radio_nr_params = radio_nr, + .io_ports = rtrack_ioports, + .num_of_io_ports = ARRAY_SIZE(rtrack_ioports), + .region_size = 2, + .card = "AIMSlab RadioTrack/RadioReveal", + .ops = &rtrack_ops, + .has_stereo = true, + .max_volume = 0xff, +}; + +static int __init rtrack_init(void) +{ + return isa_register_driver(&rtrack_driver.driver, RTRACK_MAX); +} + +static void __exit rtrack_exit(void) +{ + isa_unregister_driver(&rtrack_driver.driver); +} + +module_init(rtrack_init); +module_exit(rtrack_exit); diff --git a/drivers/media/radio/radio-aztech.c b/drivers/media/radio/radio-aztech.c new file mode 100644 index 0000000..96245d3 --- /dev/null +++ b/drivers/media/radio/radio-aztech.c @@ -0,0 +1,186 @@ +/* + * radio-aztech.c - Aztech radio card driver + * + * Converted to the radio-isa framework by Hans Verkuil <hans.verkuil@xs4all.nl> + * Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org> + * Adapted to support the Video for Linux API by + * Russell Kroll <rkroll@exploits.org>. Based on original tuner code by: + * + * Quay Ly + * Donald Song + * Jason Lewis (jlewis@twilight.vtc.vsc.edu) + * Scott McGrath (smcgrath@twilight.vtc.vsc.edu) + * William McGrath (wmcgrath@twilight.vtc.vsc.edu) + * + * Fully tested with the Keene USB FM Transmitter and the v4l2-compliance tool. +*/ + +#include <linux/module.h> /* Modules */ +#include <linux/init.h> /* Initdata */ +#include <linux/ioport.h> /* request_region */ +#include <linux/delay.h> /* udelay */ +#include <linux/videodev2.h> /* kernel radio structs */ +#include <linux/io.h> /* outb, outb_p */ +#include <linux/slab.h> +#include <media/v4l2-device.h> +#include <media/v4l2-ioctl.h> +#include <media/v4l2-ctrls.h> +#include "radio-isa.h" + +MODULE_AUTHOR("Russell Kroll, Quay Lu, Donald Song, Jason Lewis, Scott McGrath, William McGrath"); +MODULE_DESCRIPTION("A driver for the Aztech radio card."); +MODULE_LICENSE("GPL"); +MODULE_VERSION("1.0.0"); + +/* acceptable ports: 0x350 (JP3 shorted), 0x358 (JP3 open) */ +#ifndef CPTCFG_RADIO_AZTECH_PORT +#define CPTCFG_RADIO_AZTECH_PORT -1 +#endif + +#define AZTECH_MAX 2 + +static int io[AZTECH_MAX] = { [0] = CPTCFG_RADIO_AZTECH_PORT, + [1 ... (AZTECH_MAX - 1)] = -1 }; +static int radio_nr[AZTECH_MAX] = { [0 ... (AZTECH_MAX - 1)] = -1 }; +static const int radio_wait_time = 1000; + +module_param_array(io, int, NULL, 0444); +MODULE_PARM_DESC(io, "I/O addresses of the Aztech card (0x350 or 0x358)"); +module_param_array(radio_nr, int, NULL, 0444); +MODULE_PARM_DESC(radio_nr, "Radio device numbers"); + +struct aztech { + struct radio_isa_card isa; + int curvol; +}; + +static void send_0_byte(struct aztech *az) +{ + udelay(radio_wait_time); + outb_p(2 + az->curvol, az->isa.io); + outb_p(64 + 2 + az->curvol, az->isa.io); +} + +static void send_1_byte(struct aztech *az) +{ + udelay(radio_wait_time); + outb_p(128 + 2 + az->curvol, az->isa.io); + outb_p(128 + 64 + 2 + az->curvol, az->isa.io); +} + +static struct radio_isa_card *aztech_alloc(void) +{ + struct aztech *az = kzalloc(sizeof(*az), GFP_KERNEL); + + return az ? &az->isa : NULL; +} + +static int aztech_s_frequency(struct radio_isa_card *isa, u32 freq) +{ + struct aztech *az = container_of(isa, struct aztech, isa); + int i; + + freq += 171200; /* Add 10.7 MHz IF */ + freq /= 800; /* Convert to 50 kHz units */ + + send_0_byte(az); /* 0: LSB of frequency */ + + for (i = 0; i < 13; i++) /* : frequency bits (1-13) */ + if (freq & (1 << i)) + send_1_byte(az); + else + send_0_byte(az); + + send_0_byte(az); /* 14: test bit - always 0 */ + send_0_byte(az); /* 15: test bit - always 0 */ + send_0_byte(az); /* 16: band data 0 - always 0 */ + if (isa->stereo) /* 17: stereo (1 to enable) */ + send_1_byte(az); + else + send_0_byte(az); + + send_1_byte(az); /* 18: band data 1 - unknown */ + send_0_byte(az); /* 19: time base - always 0 */ + send_0_byte(az); /* 20: spacing (0 = 25 kHz) */ + send_1_byte(az); /* 21: spacing (1 = 25 kHz) */ + send_0_byte(az); /* 22: spacing (0 = 25 kHz) */ + send_1_byte(az); /* 23: AM/FM (FM = 1, always) */ + + /* latch frequency */ + + udelay(radio_wait_time); + outb_p(128 + 64 + az->curvol, az->isa.io); + + return 0; +} + +/* thanks to Michael Dwyer for giving me a dose of clues in + * the signal strength department.. + * + * This card has a stereo bit - bit 0 set = mono, not set = stereo + */ +static u32 aztech_g_rxsubchans(struct radio_isa_card *isa) +{ + if (inb(isa->io) & 1) + return V4L2_TUNER_SUB_MONO; + return V4L2_TUNER_SUB_STEREO; +} + +static int aztech_s_stereo(struct radio_isa_card *isa, bool stereo) +{ + return aztech_s_frequency(isa, isa->freq); +} + +static int aztech_s_mute_volume(struct radio_isa_card *isa, bool mute, int vol) +{ + struct aztech *az = container_of(isa, struct aztech, isa); + + if (mute) + vol = 0; + az->curvol = (vol & 1) + ((vol & 2) << 1); + outb(az->curvol, isa->io); + return 0; +} + +static const struct radio_isa_ops aztech_ops = { + .alloc = aztech_alloc, + .s_mute_volume = aztech_s_mute_volume, + .s_frequency = aztech_s_frequency, + .s_stereo = aztech_s_stereo, + .g_rxsubchans = aztech_g_rxsubchans, +}; + +static const int aztech_ioports[] = { 0x350, 0x358 }; + +static struct radio_isa_driver aztech_driver = { + .driver = { + .match = radio_isa_match, + .probe = radio_isa_probe, + .remove = radio_isa_remove, + .driver = { + .name = "radio-aztech", + }, + }, + .io_params = io, + .radio_nr_params = radio_nr, + .io_ports = aztech_ioports, + .num_of_io_ports = ARRAY_SIZE(aztech_ioports), + .region_size = 2, + .card = "Aztech Radio", + .ops = &aztech_ops, + .has_stereo = true, + .max_volume = 3, +}; + +static int __init aztech_init(void) +{ + return isa_register_driver(&aztech_driver.driver, AZTECH_MAX); +} + +static void __exit aztech_exit(void) +{ + isa_unregister_driver(&aztech_driver.driver); +} + +module_init(aztech_init); +module_exit(aztech_exit); diff --git a/drivers/media/radio/radio-cadet.c b/drivers/media/radio/radio-cadet.c new file mode 100644 index 0000000..545c04c --- /dev/null +++ b/drivers/media/radio/radio-cadet.c @@ -0,0 +1,677 @@ +/* radio-cadet.c - A video4linux driver for the ADS Cadet AM/FM Radio Card + * + * by Fred Gleason <fredg@wava.com> + * Version 0.3.3 + * + * (Loosely) based on code for the Aztech radio card by + * + * Russell Kroll (rkroll@exploits.org) + * Quay Ly + * Donald Song + * Jason Lewis (jlewis@twilight.vtc.vsc.edu) + * Scott McGrath (smcgrath@twilight.vtc.vsc.edu) + * William McGrath (wmcgrath@twilight.vtc.vsc.edu) + * + * History: + * 2000-04-29 Russell Kroll <rkroll@exploits.org> + * Added ISAPnP detection for Linux 2.3/2.4 + * + * 2001-01-10 Russell Kroll <rkroll@exploits.org> + * Removed dead CONFIG_RADIO_CADET_PORT code + * PnP detection on load is now default (no args necessary) + * + * 2002-01-17 Adam Belay <ambx1@neo.rr.com> + * Updated to latest pnp code + * + * 2003-01-31 Alan Cox <alan@lxorguk.ukuu.org.uk> + * Cleaned up locking, delay code, general odds and ends + * + * 2006-07-30 Hans J. Koch <koch@hjk-az.de> + * Changed API to V4L2 + */ + +#include <linux/module.h> /* Modules */ +#include <linux/init.h> /* Initdata */ +#include <linux/ioport.h> /* request_region */ +#include <linux/delay.h> /* udelay */ +#include <linux/videodev2.h> /* V4L2 API defs */ +#include <linux/param.h> +#include <linux/pnp.h> +#include <linux/sched.h> +#include <linux/io.h> /* outb, outb_p */ +#include <media/v4l2-device.h> +#include <media/v4l2-ioctl.h> +#include <media/v4l2-ctrls.h> +#include <media/v4l2-fh.h> +#include <media/v4l2-event.h> + +MODULE_AUTHOR("Fred Gleason, Russell Kroll, Quay Lu, Donald Song, Jason Lewis, Scott McGrath, William McGrath"); +MODULE_DESCRIPTION("A driver for the ADS Cadet AM/FM/RDS radio card."); +MODULE_LICENSE("GPL"); +MODULE_VERSION("0.3.4"); + +static int io = -1; /* default to isapnp activation */ +static int radio_nr = -1; + +module_param(io, int, 0); +MODULE_PARM_DESC(io, "I/O address of Cadet card (0x330,0x332,0x334,0x336,0x338,0x33a,0x33c,0x33e)"); +module_param(radio_nr, int, 0); + +#define RDS_BUFFER 256 +#define RDS_RX_FLAG 1 +#define MBS_RX_FLAG 2 + +struct cadet { + struct v4l2_device v4l2_dev; + struct video_device vdev; + struct v4l2_ctrl_handler ctrl_handler; + int io; + bool is_fm_band; + u32 curfreq; + int tunestat; + int sigstrength; + wait_queue_head_t read_queue; + struct timer_list readtimer; + u8 rdsin, rdsout, rdsstat; + unsigned char rdsbuf[RDS_BUFFER]; + struct mutex lock; + int reading; +}; + +static struct cadet cadet_card; + +/* + * Signal Strength Threshold Values + * The V4L API spec does not define any particular unit for the signal + * strength value. These values are in microvolts of RF at the tuner's input. + */ +static u16 sigtable[2][4] = { + { 1835, 2621, 4128, 65535 }, + { 2185, 4369, 13107, 65535 }, +}; + +static const struct v4l2_frequency_band bands[] = { + { + .index = 0, + .type = V4L2_TUNER_RADIO, + .capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_FREQ_BANDS, + .rangelow = 8320, /* 520 kHz */ + .rangehigh = 26400, /* 1650 kHz */ + .modulation = V4L2_BAND_MODULATION_AM, + }, { + .index = 1, + .type = V4L2_TUNER_RADIO, + .capability = V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS | + V4L2_TUNER_CAP_RDS_BLOCK_IO | V4L2_TUNER_CAP_LOW | + V4L2_TUNER_CAP_FREQ_BANDS, + .rangelow = 1400000, /* 87.5 MHz */ + .rangehigh = 1728000, /* 108.0 MHz */ + .modulation = V4L2_BAND_MODULATION_FM, + }, +}; + + +static int cadet_getstereo(struct cadet *dev) +{ + int ret = V4L2_TUNER_SUB_MONO; + + if (!dev->is_fm_band) /* Only FM has stereo capability! */ + return V4L2_TUNER_SUB_MONO; + + outb(7, dev->io); /* Select tuner control */ + if ((inb(dev->io + 1) & 0x40) == 0) + ret = V4L2_TUNER_SUB_STEREO; + return ret; +} + +static unsigned cadet_gettune(struct cadet *dev) +{ + int curvol, i; + unsigned fifo = 0; + + /* + * Prepare for read + */ + + outb(7, dev->io); /* Select tuner control */ + curvol = inb(dev->io + 1); /* Save current volume/mute setting */ + outb(0x00, dev->io + 1); /* Ensure WRITE-ENABLE is LOW */ + dev->tunestat = 0xffff; + + /* + * Read the shift register + */ + for (i = 0; i < 25; i++) { + fifo = (fifo << 1) | ((inb(dev->io + 1) >> 7) & 0x01); + if (i < 24) { + outb(0x01, dev->io + 1); + dev->tunestat &= inb(dev->io + 1); + outb(0x00, dev->io + 1); + } + } + + /* + * Restore volume/mute setting + */ + outb(curvol, dev->io + 1); + return fifo; +} + +static unsigned cadet_getfreq(struct cadet *dev) +{ + int i; + unsigned freq = 0, test, fifo = 0; + + /* + * Read current tuning + */ + fifo = cadet_gettune(dev); + + /* + * Convert to actual frequency + */ + if (!dev->is_fm_band) /* AM */ + return ((fifo & 0x7fff) - 450) * 16; + + test = 12500; + for (i = 0; i < 14; i++) { + if ((fifo & 0x01) != 0) + freq += test; + test = test << 1; + fifo = fifo >> 1; + } + freq -= 10700000; /* IF frequency is 10.7 MHz */ + freq = (freq * 16) / 1000; /* Make it 1/16 kHz */ + return freq; +} + +static void cadet_settune(struct cadet *dev, unsigned fifo) +{ + int i; + unsigned test; + + outb(7, dev->io); /* Select tuner control */ + /* + * Write the shift register + */ + test = 0; + test = (fifo >> 23) & 0x02; /* Align data for SDO */ + test |= 0x1c; /* SDM=1, SWE=1, SEN=1, SCK=0 */ + outb(7, dev->io); /* Select tuner control */ + outb(test, dev->io + 1); /* Initialize for write */ + for (i = 0; i < 25; i++) { + test |= 0x01; /* Toggle SCK High */ + outb(test, dev->io + 1); + test &= 0xfe; /* Toggle SCK Low */ + outb(test, dev->io + 1); + fifo = fifo << 1; /* Prepare the next bit */ + test = 0x1c | ((fifo >> 23) & 0x02); + outb(test, dev->io + 1); + } +} + +static void cadet_setfreq(struct cadet *dev, unsigned freq) +{ + unsigned fifo; + int i, j, test; + int curvol; + + freq = clamp(freq, bands[dev->is_fm_band].rangelow, + bands[dev->is_fm_band].rangehigh); + dev->curfreq = freq; + /* + * Formulate a fifo command + */ + fifo = 0; + if (dev->is_fm_band) { /* FM */ + test = 102400; + freq = freq / 16; /* Make it kHz */ + freq += 10700; /* IF is 10700 kHz */ + for (i = 0; i < 14; i++) { + fifo = fifo << 1; + if (freq >= test) { + fifo |= 0x01; + freq -= test; + } + test = test >> 1; + } + } else { /* AM */ + fifo = (freq / 16) + 450; /* Make it kHz */ + fifo |= 0x100000; /* Select AM Band */ + } + + /* + * Save current volume/mute setting + */ + + outb(7, dev->io); /* Select tuner control */ + curvol = inb(dev->io + 1); + + /* + * Tune the card + */ + for (j = 3; j > -1; j--) { + cadet_settune(dev, fifo | (j << 16)); + + outb(7, dev->io); /* Select tuner control */ + outb(curvol, dev->io + 1); + + msleep(100); + + cadet_gettune(dev); + if ((dev->tunestat & 0x40) == 0) { /* Tuned */ + dev->sigstrength = sigtable[dev->is_fm_band][j]; + goto reset_rds; + } + } + dev->sigstrength = 0; +reset_rds: + outb(3, dev->io); + outb(inb(dev->io + 1) & 0x7f, dev->io + 1); +} + + +static void cadet_handler(unsigned long data) +{ + struct cadet *dev = (void *)data; + + /* Service the RDS fifo */ + if (mutex_trylock(&dev->lock)) { + outb(0x3, dev->io); /* Select RDS Decoder Control */ + if ((inb(dev->io + 1) & 0x20) != 0) + printk(KERN_CRIT "cadet: RDS fifo overflow\n"); + outb(0x80, dev->io); /* Select RDS fifo */ + while ((inb(dev->io) & 0x80) != 0) { + dev->rdsbuf[dev->rdsin] = inb(dev->io + 1); + if (dev->rdsin + 1 == dev->rdsout) + printk(KERN_WARNING "cadet: RDS buffer overflow\n"); + else + dev->rdsin++; + } + mutex_unlock(&dev->lock); + } + + /* + * Service pending read + */ + if (dev->rdsin != dev->rdsout) + wake_up_interruptible(&dev->read_queue); + + /* + * Clean up and exit + */ + init_timer(&dev->readtimer); + dev->readtimer.function = cadet_handler; + dev->readtimer.data = data; + dev->readtimer.expires = jiffies + msecs_to_jiffies(50); + add_timer(&dev->readtimer); +} + +static void cadet_start_rds(struct cadet *dev) +{ + dev->rdsstat = 1; + outb(0x80, dev->io); /* Select RDS fifo */ + init_timer(&dev->readtimer); + dev->readtimer.function = cadet_handler; + dev->readtimer.data = (unsigned long)dev; + dev->readtimer.expires = jiffies + msecs_to_jiffies(50); + add_timer(&dev->readtimer); +} + +static ssize_t cadet_read(struct file *file, char __user *data, size_t count, loff_t *ppos) +{ + struct cadet *dev = video_drvdata(file); + unsigned char readbuf[RDS_BUFFER]; + int i = 0; + + mutex_lock(&dev->lock); + if (dev->rdsstat == 0) + cadet_start_rds(dev); + if (dev->rdsin == dev->rdsout) { + if (file->f_flags & O_NONBLOCK) { + i = -EWOULDBLOCK; + goto unlock; + } + mutex_unlock(&dev->lock); + interruptible_sleep_on(&dev->read_queue); + mutex_lock(&dev->lock); + } + while (i < count && dev->rdsin != dev->rdsout) + readbuf[i++] = dev->rdsbuf[dev->rdsout++]; + + if (i && copy_to_user(data, readbuf, i)) + i = -EFAULT; +unlock: + mutex_unlock(&dev->lock); + return i; +} + + +static int vidioc_querycap(struct file *file, void *priv, + struct v4l2_capability *v) +{ + strlcpy(v->driver, "ADS Cadet", sizeof(v->driver)); + strlcpy(v->card, "ADS Cadet", sizeof(v->card)); + strlcpy(v->bus_info, "ISA", sizeof(v->bus_info)); + v->device_caps = V4L2_CAP_TUNER | V4L2_CAP_RADIO | + V4L2_CAP_READWRITE | V4L2_CAP_RDS_CAPTURE; + v->capabilities = v->device_caps | V4L2_CAP_DEVICE_CAPS; + return 0; +} + +static int vidioc_g_tuner(struct file *file, void *priv, + struct v4l2_tuner *v) +{ + struct cadet *dev = video_drvdata(file); + + if (v->index) + return -EINVAL; + v->type = V4L2_TUNER_RADIO; + strlcpy(v->name, "Radio", sizeof(v->name)); + v->capability = bands[0].capability | bands[1].capability; + v->rangelow = bands[0].rangelow; /* 520 kHz (start of AM band) */ + v->rangehigh = bands[1].rangehigh; /* 108.0 MHz (end of FM band) */ + if (dev->is_fm_band) { + v->rxsubchans = cadet_getstereo(dev); + outb(3, dev->io); + outb(inb(dev->io + 1) & 0x7f, dev->io + 1); + mdelay(100); + outb(3, dev->io); + if (inb(dev->io + 1) & 0x80) + v->rxsubchans |= V4L2_TUNER_SUB_RDS; + } else { + v->rangelow = 8320; /* 520 kHz */ + v->rangehigh = 26400; /* 1650 kHz */ + v->rxsubchans = V4L2_TUNER_SUB_MONO; + } + v->audmode = V4L2_TUNER_MODE_STEREO; + v->signal = dev->sigstrength; /* We might need to modify scaling of this */ + return 0; +} + +static int vidioc_s_tuner(struct file *file, void *priv, + const struct v4l2_tuner *v) +{ + return v->index ? -EINVAL : 0; +} + +static int vidioc_enum_freq_bands(struct file *file, void *priv, + struct v4l2_frequency_band *band) +{ + if (band->tuner) + return -EINVAL; + if (band->index >= ARRAY_SIZE(bands)) + return -EINVAL; + *band = bands[band->index]; + return 0; +} + +static int vidioc_g_frequency(struct file *file, void *priv, + struct v4l2_frequency *f) +{ + struct cadet *dev = video_drvdata(file); + + if (f->tuner) + return -EINVAL; + f->type = V4L2_TUNER_RADIO; + f->frequency = dev->curfreq; + return 0; +} + + +static int vidioc_s_frequency(struct file *file, void *priv, + const struct v4l2_frequency *f) +{ + struct cadet *dev = video_drvdata(file); + + if (f->tuner) + return -EINVAL; + dev->is_fm_band = + f->frequency >= (bands[0].rangehigh + bands[1].rangelow) / 2; + cadet_setfreq(dev, f->frequency); + return 0; +} + +static int cadet_s_ctrl(struct v4l2_ctrl *ctrl) +{ + struct cadet *dev = container_of(ctrl->handler, struct cadet, ctrl_handler); + + switch (ctrl->id) { + case V4L2_CID_AUDIO_MUTE: + outb(7, dev->io); /* Select tuner control */ + if (ctrl->val) + outb(0x00, dev->io + 1); + else + outb(0x20, dev->io + 1); + return 0; + } + return -EINVAL; +} + +static int cadet_open(struct file *file) +{ + struct cadet *dev = video_drvdata(file); + int err; + + mutex_lock(&dev->lock); + err = v4l2_fh_open(file); + if (err) + goto fail; + if (v4l2_fh_is_singular_file(file)) + init_waitqueue_head(&dev->read_queue); +fail: + mutex_unlock(&dev->lock); + return err; +} + +static int cadet_release(struct file *file) +{ + struct cadet *dev = video_drvdata(file); + + mutex_lock(&dev->lock); + if (v4l2_fh_is_singular_file(file) && dev->rdsstat) { + del_timer_sync(&dev->readtimer); + dev->rdsstat = 0; + } + v4l2_fh_release(file); + mutex_unlock(&dev->lock); + return 0; +} + +static unsigned int cadet_poll(struct file *file, struct poll_table_struct *wait) +{ + struct cadet *dev = video_drvdata(file); + unsigned long req_events = poll_requested_events(wait); + unsigned int res = v4l2_ctrl_poll(file, wait); + + poll_wait(file, &dev->read_queue, wait); + if (dev->rdsstat == 0 && (req_events & (POLLIN | POLLRDNORM))) { + mutex_lock(&dev->lock); + if (dev->rdsstat == 0) + cadet_start_rds(dev); + mutex_unlock(&dev->lock); + } + if (dev->rdsin != dev->rdsout) + res |= POLLIN | POLLRDNORM; + return res; +} + + +static const struct v4l2_file_operations cadet_fops = { + .owner = THIS_MODULE, + .open = cadet_open, + .release = cadet_release, + .read = cadet_read, + .unlocked_ioctl = video_ioctl2, + .poll = cadet_poll, +}; + +static const struct v4l2_ioctl_ops cadet_ioctl_ops = { + .vidioc_querycap = vidioc_querycap, + .vidioc_g_tuner = vidioc_g_tuner, + .vidioc_s_tuner = vidioc_s_tuner, + .vidioc_g_frequency = vidioc_g_frequency, + .vidioc_s_frequency = vidioc_s_frequency, + .vidioc_enum_freq_bands = vidioc_enum_freq_bands, + .vidioc_log_status = v4l2_ctrl_log_status, + .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, + .vidioc_unsubscribe_event = v4l2_event_unsubscribe, +}; + +static const struct v4l2_ctrl_ops cadet_ctrl_ops = { + .s_ctrl = cadet_s_ctrl, +}; + +#ifdef CONFIG_PNP + +static struct pnp_device_id cadet_pnp_devices[] = { + /* ADS Cadet AM/FM Radio Card */ + {.id = "MSM0c24", .driver_data = 0}, + {.id = ""} +}; + +MODULE_DEVICE_TABLE(pnp, cadet_pnp_devices); + +static int cadet_pnp_probe(struct pnp_dev *dev, const struct pnp_device_id *dev_id) +{ + if (!dev) + return -ENODEV; + /* only support one device */ + if (io > 0) + return -EBUSY; + + if (!pnp_port_valid(dev, 0)) + return -ENODEV; + + io = pnp_port_start(dev, 0); + + printk(KERN_INFO "radio-cadet: PnP reports device at %#x\n", io); + + return io; +} + +static struct pnp_driver cadet_pnp_driver = { + .name = "radio-cadet", + .id_table = cadet_pnp_devices, + .probe = cadet_pnp_probe, + .remove = NULL, +}; + +#else +static struct pnp_driver cadet_pnp_driver; +#endif + +static void cadet_probe(struct cadet *dev) +{ + static int iovals[8] = { 0x330, 0x332, 0x334, 0x336, 0x338, 0x33a, 0x33c, 0x33e }; + int i; + + for (i = 0; i < 8; i++) { + dev->io = iovals[i]; + if (request_region(dev->io, 2, "cadet-probe")) { + cadet_setfreq(dev, bands[1].rangelow); + if (cadet_getfreq(dev) == bands[1].rangelow) { + release_region(dev->io, 2); + return; + } + release_region(dev->io, 2); + } + } + dev->io = -1; +} + +/* + * io should only be set if the user has used something like + * isapnp (the userspace program) to initialize this card for us + */ + +static int __init cadet_init(void) +{ + struct cadet *dev = &cadet_card; + struct v4l2_device *v4l2_dev = &dev->v4l2_dev; + struct v4l2_ctrl_handler *hdl; + int res = -ENODEV; + + strlcpy(v4l2_dev->name, "cadet", sizeof(v4l2_dev->name)); + mutex_init(&dev->lock); + + /* If a probe was requested then probe ISAPnP first (safest) */ + if (io < 0) + pnp_register_driver(&cadet_pnp_driver); + dev->io = io; + + /* If that fails then probe unsafely if probe is requested */ + if (dev->io < 0) + cadet_probe(dev); + + /* Else we bail out */ + if (dev->io < 0) { +#ifdef MODULE + v4l2_err(v4l2_dev, "you must set an I/O address with io=0x330, 0x332, 0x334,\n"); + v4l2_err(v4l2_dev, "0x336, 0x338, 0x33a, 0x33c or 0x33e\n"); +#endif + goto fail; + } + if (!request_region(dev->io, 2, "cadet")) + goto fail; + + res = v4l2_device_register(NULL, v4l2_dev); + if (res < 0) { + release_region(dev->io, 2); + v4l2_err(v4l2_dev, "could not register v4l2_device\n"); + goto fail; + } + + hdl = &dev->ctrl_handler; + v4l2_ctrl_handler_init(hdl, 2); + v4l2_ctrl_new_std(hdl, &cadet_ctrl_ops, + V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1); + v4l2_dev->ctrl_handler = hdl; + if (hdl->error) { + res = hdl->error; + v4l2_err(v4l2_dev, "Could not register controls\n"); + goto err_hdl; + } + + dev->is_fm_band = true; + dev->curfreq = bands[dev->is_fm_band].rangelow; + cadet_setfreq(dev, dev->curfreq); + strlcpy(dev->vdev.name, v4l2_dev->name, sizeof(dev->vdev.name)); + dev->vdev.v4l2_dev = v4l2_dev; + dev->vdev.fops = &cadet_fops; + dev->vdev.ioctl_ops = &cadet_ioctl_ops; + dev->vdev.release = video_device_release_empty; + dev->vdev.lock = &dev->lock; + set_bit(V4L2_FL_USE_FH_PRIO, &dev->vdev.flags); + video_set_drvdata(&dev->vdev, dev); + + res = video_register_device(&dev->vdev, VFL_TYPE_RADIO, radio_nr); + if (res < 0) + goto err_hdl; + v4l2_info(v4l2_dev, "ADS Cadet Radio Card at 0x%x\n", dev->io); + return 0; +err_hdl: + v4l2_ctrl_handler_free(hdl); + v4l2_device_unregister(v4l2_dev); + release_region(dev->io, 2); +fail: + pnp_unregister_driver(&cadet_pnp_driver); + return res; +} + +static void __exit cadet_exit(void) +{ + struct cadet *dev = &cadet_card; + + video_unregister_device(&dev->vdev); + v4l2_ctrl_handler_free(&dev->ctrl_handler); + v4l2_device_unregister(&dev->v4l2_dev); + outb(7, dev->io); /* Mute */ + outb(0x00, dev->io + 1); + release_region(dev->io, 2); + pnp_unregister_driver(&cadet_pnp_driver); +} + +module_init(cadet_init); +module_exit(cadet_exit); + diff --git a/drivers/media/radio/radio-gemtek.c b/drivers/media/radio/radio-gemtek.c new file mode 100644 index 0000000..550d1a4 --- /dev/null +++ b/drivers/media/radio/radio-gemtek.c @@ -0,0 +1,343 @@ +/* + * GemTek radio card driver + * + * Copyright 1998 Jonas Munsin <jmunsin@iki.fi> + * + * GemTek hasn't released any specs on the card, so the protocol had to + * be reverse engineered with dosemu. + * + * Besides the protocol changes, this is mostly a copy of: + * + * RadioTrack II driver for Linux radio support (C) 1998 Ben Pfaff + * + * Based on RadioTrack I/RadioReveal (C) 1997 M. Kirkwood + * Converted to new API by Alan Cox <alan@lxorguk.ukuu.org.uk> + * Various bugfixes and enhancements by Russell Kroll <rkroll@exploits.org> + * + * Converted to the radio-isa framework by Hans Verkuil <hans.verkuil@cisco.com> + * Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org> + * + * Note: this card seems to swap the left and right audio channels! + * + * Fully tested with the Keene USB FM Transmitter and the v4l2-compliance tool. + */ + +#include <linux/module.h> /* Modules */ +#include <linux/init.h> /* Initdata */ +#include <linux/ioport.h> /* request_region */ +#include <linux/delay.h> /* udelay */ +#include <linux/videodev2.h> /* kernel radio structs */ +#include <linux/mutex.h> +#include <linux/io.h> /* outb, outb_p */ +#include <linux/pnp.h> +#include <linux/slab.h> +#include <media/v4l2-ioctl.h> +#include <media/v4l2-device.h> +#include "radio-isa.h" + +/* + * Module info. + */ + +MODULE_AUTHOR("Jonas Munsin, Pekka Seppänen <pexu@kapsi.fi>"); +MODULE_DESCRIPTION("A driver for the GemTek Radio card."); +MODULE_LICENSE("GPL"); +MODULE_VERSION("1.0.0"); + +/* + * Module params. + */ + +#ifndef CPTCFG_RADIO_GEMTEK_PORT +#define CPTCFG_RADIO_GEMTEK_PORT -1 +#endif +#ifndef CPTCFG_RADIO_GEMTEK_PROBE +#define CPTCFG_RADIO_GEMTEK_PROBE 1 +#endif + +#define GEMTEK_MAX 4 + +static bool probe = CPTCFG_RADIO_GEMTEK_PROBE; +static bool hardmute; +static int io[GEMTEK_MAX] = { [0] = CPTCFG_RADIO_GEMTEK_PORT, + [1 ... (GEMTEK_MAX - 1)] = -1 }; +static int radio_nr[GEMTEK_MAX] = { [0 ... (GEMTEK_MAX - 1)] = -1 }; + +module_param(probe, bool, 0444); +MODULE_PARM_DESC(probe, "Enable automatic device probing."); + +module_param(hardmute, bool, 0644); +MODULE_PARM_DESC(hardmute, "Enable 'hard muting' by shutting down PLL, may " + "reduce static noise."); + +module_param_array(io, int, NULL, 0444); +MODULE_PARM_DESC(io, "Force I/O ports for the GemTek Radio card if automatic " + "probing is disabled or fails. The most common I/O ports are: 0x20c " + "0x30c, 0x24c or 0x34c (0x20c, 0x248 and 0x28c have been reported to " + "work for the combined sound/radiocard)."); + +module_param_array(radio_nr, int, NULL, 0444); +MODULE_PARM_DESC(radio_nr, "Radio device numbers"); + +/* + * Frequency calculation constants. Intermediate frequency 10.52 MHz (nominal + * value 10.7 MHz), reference divisor 6.39 kHz (nominal 6.25 kHz). + */ +#define FSCALE 8 +#define IF_OFFSET ((unsigned int)(10.52 * 16000 * (1<<FSCALE))) +#define REF_FREQ ((unsigned int)(6.39 * 16 * (1<<FSCALE))) + +#define GEMTEK_CK 0x01 /* Clock signal */ +#define GEMTEK_DA 0x02 /* Serial data */ +#define GEMTEK_CE 0x04 /* Chip enable */ +#define GEMTEK_NS 0x08 /* No signal */ +#define GEMTEK_MT 0x10 /* Line mute */ +#define GEMTEK_STDF_3_125_KHZ 0x01 /* Standard frequency 3.125 kHz */ +#define GEMTEK_PLL_OFF 0x07 /* PLL off */ + +#define BU2614_BUS_SIZE 32 /* BU2614 / BU2614FS bus size */ + +#define SHORT_DELAY 5 /* usec */ +#define LONG_DELAY 75 /* usec */ + +struct gemtek { + struct radio_isa_card isa; + bool muted; + u32 bu2614data; +}; + +#define BU2614_FREQ_BITS 16 /* D0..D15, Frequency data */ +#define BU2614_PORT_BITS 3 /* P0..P2, Output port control data */ +#define BU2614_VOID_BITS 4 /* unused */ +#define BU2614_FMES_BITS 1 /* CT, Frequency measurement beginning data */ +#define BU2614_STDF_BITS 3 /* R0..R2, Standard frequency data */ +#define BU2614_SWIN_BITS 1 /* S, Switch between FMIN / AMIN */ +#define BU2614_SWAL_BITS 1 /* PS, Swallow counter division (AMIN only)*/ +#define BU2614_VOID2_BITS 1 /* unused */ +#define BU2614_FMUN_BITS 1 /* GT, Frequency measurement time & unlock */ +#define BU2614_TEST_BITS 1 /* TS, Test data is input */ + +#define BU2614_FREQ_SHIFT 0 +#define BU2614_PORT_SHIFT (BU2614_FREQ_BITS + BU2614_FREQ_SHIFT) +#define BU2614_VOID_SHIFT (BU2614_PORT_BITS + BU2614_PORT_SHIFT) +#define BU2614_FMES_SHIFT (BU2614_VOID_BITS + BU2614_VOID_SHIFT) +#define BU2614_STDF_SHIFT (BU2614_FMES_BITS + BU2614_FMES_SHIFT) +#define BU2614_SWIN_SHIFT (BU2614_STDF_BITS + BU2614_STDF_SHIFT) +#define BU2614_SWAL_SHIFT (BU2614_SWIN_BITS + BU2614_SWIN_SHIFT) +#define BU2614_VOID2_SHIFT (BU2614_SWAL_BITS + BU2614_SWAL_SHIFT) +#define BU2614_FMUN_SHIFT (BU2614_VOID2_BITS + BU2614_VOID2_SHIFT) +#define BU2614_TEST_SHIFT (BU2614_FMUN_BITS + BU2614_FMUN_SHIFT) + +#define MKMASK(field) (((1<<BU2614_##field##_BITS) - 1) << \ + BU2614_##field##_SHIFT) +#define BU2614_PORT_MASK MKMASK(PORT) +#define BU2614_FREQ_MASK MKMASK(FREQ) +#define BU2614_VOID_MASK MKMASK(VOID) +#define BU2614_FMES_MASK MKMASK(FMES) +#define BU2614_STDF_MASK MKMASK(STDF) +#define BU2614_SWIN_MASK MKMASK(SWIN) +#define BU2614_SWAL_MASK MKMASK(SWAL) +#define BU2614_VOID2_MASK MKMASK(VOID2) +#define BU2614_FMUN_MASK MKMASK(FMUN) +#define BU2614_TEST_MASK MKMASK(TEST) + +/* + * Set data which will be sent to BU2614FS. + */ +#define gemtek_bu2614_set(dev, field, data) ((dev)->bu2614data = \ + ((dev)->bu2614data & ~field##_MASK) | ((data) << field##_SHIFT)) + +/* + * Transmit settings to BU2614FS over GemTek IC. + */ +static void gemtek_bu2614_transmit(struct gemtek *gt) +{ + struct radio_isa_card *isa = >->isa; + int i, bit, q, mute; + + mute = gt->muted ? GEMTEK_MT : 0x00; + + outb_p(mute | GEMTEK_CE | GEMTEK_DA | GEMTEK_CK, isa->io); + udelay(LONG_DELAY); + + for (i = 0, q = gt->bu2614data; i < 32; i++, q >>= 1) { + bit = (q & 1) ? GEMTEK_DA : 0; + outb_p(mute | GEMTEK_CE | bit, isa->io); + udelay(SHORT_DELAY); + outb_p(mute | GEMTEK_CE | bit | GEMTEK_CK, isa->io); + udelay(SHORT_DELAY); + } + + outb_p(mute | GEMTEK_DA | GEMTEK_CK, isa->io); + udelay(SHORT_DELAY); +} + +/* + * Calculate divisor from FM-frequency for BU2614FS (3.125 KHz STDF expected). + */ +static unsigned long gemtek_convfreq(unsigned long freq) +{ + return ((freq << FSCALE) + IF_OFFSET + REF_FREQ / 2) / REF_FREQ; +} + +static struct radio_isa_card *gemtek_alloc(void) +{ + struct gemtek *gt = kzalloc(sizeof(*gt), GFP_KERNEL); + + if (gt) + gt->muted = true; + return gt ? >->isa : NULL; +} + +/* + * Set FM-frequency. + */ +static int gemtek_s_frequency(struct radio_isa_card *isa, u32 freq) +{ + struct gemtek *gt = container_of(isa, struct gemtek, isa); + + if (hardmute && gt->muted) + return 0; + + gemtek_bu2614_set(gt, BU2614_PORT, 0); + gemtek_bu2614_set(gt, BU2614_FMES, 0); + gemtek_bu2614_set(gt, BU2614_SWIN, 0); /* FM-mode */ + gemtek_bu2614_set(gt, BU2614_SWAL, 0); + gemtek_bu2614_set(gt, BU2614_FMUN, 1); /* GT bit set */ + gemtek_bu2614_set(gt, BU2614_TEST, 0); + gemtek_bu2614_set(gt, BU2614_STDF, GEMTEK_STDF_3_125_KHZ); + gemtek_bu2614_set(gt, BU2614_FREQ, gemtek_convfreq(freq)); + gemtek_bu2614_transmit(gt); + return 0; +} + +/* + * Set mute flag. + */ +static int gemtek_s_mute_volume(struct radio_isa_card *isa, bool mute, int vol) +{ + struct gemtek *gt = container_of(isa, struct gemtek, isa); + int i; + + gt->muted = mute; + if (hardmute) { + if (!mute) + return gemtek_s_frequency(isa, isa->freq); + + /* Turn off PLL, disable data output */ + gemtek_bu2614_set(gt, BU2614_PORT, 0); + gemtek_bu2614_set(gt, BU2614_FMES, 0); /* CT bit off */ + gemtek_bu2614_set(gt, BU2614_SWIN, 0); /* FM-mode */ + gemtek_bu2614_set(gt, BU2614_SWAL, 0); + gemtek_bu2614_set(gt, BU2614_FMUN, 0); /* GT bit off */ + gemtek_bu2614_set(gt, BU2614_TEST, 0); + gemtek_bu2614_set(gt, BU2614_STDF, GEMTEK_PLL_OFF); + gemtek_bu2614_set(gt, BU2614_FREQ, 0); + gemtek_bu2614_transmit(gt); + return 0; + } + + /* Read bus contents (CE, CK and DA). */ + i = inb_p(isa->io); + /* Write it back with mute flag set. */ + outb_p((i >> 5) | (mute ? GEMTEK_MT : 0), isa->io); + udelay(SHORT_DELAY); + return 0; +} + +static u32 gemtek_g_rxsubchans(struct radio_isa_card *isa) +{ + if (inb_p(isa->io) & GEMTEK_NS) + return V4L2_TUNER_SUB_MONO; + return V4L2_TUNER_SUB_STEREO; +} + +/* + * Check if requested card acts like GemTek Radio card. + */ +static bool gemtek_probe(struct radio_isa_card *isa, int io) +{ + int i, q; + + q = inb_p(io); /* Read bus contents before probing. */ + /* Try to turn on CE, CK and DA respectively and check if card responds + properly. */ + for (i = 0; i < 3; ++i) { + outb_p(1 << i, io); + udelay(SHORT_DELAY); + + if ((inb_p(io) & ~GEMTEK_NS) != (0x17 | (1 << (i + 5)))) + return false; + } + outb_p(q >> 5, io); /* Write bus contents back. */ + udelay(SHORT_DELAY); + return true; +} + +static const struct radio_isa_ops gemtek_ops = { + .alloc = gemtek_alloc, + .probe = gemtek_probe, + .s_mute_volume = gemtek_s_mute_volume, + .s_frequency = gemtek_s_frequency, + .g_rxsubchans = gemtek_g_rxsubchans, +}; + +static const int gemtek_ioports[] = { 0x20c, 0x30c, 0x24c, 0x34c, 0x248, 0x28c }; + +#ifdef CONFIG_PNP +static struct pnp_device_id gemtek_pnp_devices[] = { + /* AOpen FX-3D/Pro Radio */ + {.id = "ADS7183", .driver_data = 0}, + {.id = ""} +}; + +MODULE_DEVICE_TABLE(pnp, gemtek_pnp_devices); +#endif + +static struct radio_isa_driver gemtek_driver = { + .driver = { + .match = radio_isa_match, + .probe = radio_isa_probe, + .remove = radio_isa_remove, + .driver = { + .name = "radio-gemtek", + }, + }, +#ifdef CONFIG_PNP + .pnp_driver = { + .name = "radio-gemtek", + .id_table = gemtek_pnp_devices, + .probe = radio_isa_pnp_probe, + .remove = radio_isa_pnp_remove, + }, +#endif + .io_params = io, + .radio_nr_params = radio_nr, + .io_ports = gemtek_ioports, + .num_of_io_ports = ARRAY_SIZE(gemtek_ioports), + .region_size = 1, + .card = "GemTek Radio", + .ops = &gemtek_ops, + .has_stereo = true, +}; + +static int __init gemtek_init(void) +{ + gemtek_driver.probe = probe; +#ifdef CONFIG_PNP + pnp_register_driver(&gemtek_driver.pnp_driver); +#endif + return isa_register_driver(&gemtek_driver.driver, GEMTEK_MAX); +} + +static void __exit gemtek_exit(void) +{ + hardmute = 1; /* Turn off PLL */ +#ifdef CONFIG_PNP + pnp_unregister_driver(&gemtek_driver.pnp_driver); +#endif + isa_unregister_driver(&gemtek_driver.driver); +} + +module_init(gemtek_init); +module_exit(gemtek_exit); diff --git a/drivers/media/radio/radio-isa.c b/drivers/media/radio/radio-isa.c new file mode 100644 index 0000000..6ff3508 --- /dev/null +++ b/drivers/media/radio/radio-isa.c @@ -0,0 +1,394 @@ +/* + * Framework for ISA radio drivers. + * This takes care of all the V4L2 scaffolding, allowing the ISA drivers + * to concentrate on the actual hardware operation. + * + * Copyright (C) 2012 Hans Verkuil <hans.verkuil@cisco.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA + * 02110-1301 USA + */ + +#include <linux/module.h> +#include <linux/init.h> +#include <linux/ioport.h> +#include <linux/delay.h> +#include <linux/videodev2.h> +#include <linux/io.h> +#include <linux/slab.h> +#include <media/v4l2-device.h> +#include <media/v4l2-ioctl.h> +#include <media/v4l2-fh.h> +#include <media/v4l2-ctrls.h> +#include <media/v4l2-event.h> + +#include "radio-isa.h" + +MODULE_AUTHOR("Hans Verkuil"); +MODULE_DESCRIPTION("A framework for ISA radio drivers."); +MODULE_LICENSE("GPL"); + +#define FREQ_LOW (87U * 16000U) +#define FREQ_HIGH (108U * 16000U) + +static int radio_isa_querycap(struct file *file, void *priv, + struct v4l2_capability *v) +{ + struct radio_isa_card *isa = video_drvdata(file); + + strlcpy(v->driver, isa->drv->driver.driver.name, sizeof(v->driver)); + strlcpy(v->card, isa->drv->card, sizeof(v->card)); + snprintf(v->bus_info, sizeof(v->bus_info), "ISA:%s", isa->v4l2_dev.name); + + v->device_caps = V4L2_CAP_TUNER | V4L2_CAP_RADIO; + v->capabilities = v->device_caps | V4L2_CAP_DEVICE_CAPS; + return 0; +} + +static int radio_isa_g_tuner(struct file *file, void *priv, + struct v4l2_tuner *v) +{ + struct radio_isa_card *isa = video_drvdata(file); + const struct radio_isa_ops *ops = isa->drv->ops; + + if (v->index > 0) + return -EINVAL; + + strlcpy(v->name, "FM", sizeof(v->name)); + v->type = V4L2_TUNER_RADIO; + v->rangelow = FREQ_LOW; + v->rangehigh = FREQ_HIGH; + v->capability = V4L2_TUNER_CAP_LOW; + if (isa->drv->has_stereo) + v->capability |= V4L2_TUNER_CAP_STEREO; + + if (ops->g_rxsubchans) + v->rxsubchans = ops->g_rxsubchans(isa); + else + v->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO; + v->audmode = isa->stereo ? V4L2_TUNER_MODE_STEREO : V4L2_TUNER_MODE_MONO; + if (ops->g_signal) + v->signal = ops->g_signal(isa); + else + v->signal = (v->rxsubchans & V4L2_TUNER_SUB_STEREO) ? + 0xffff : 0; + return 0; +} + +static int radio_isa_s_tuner(struct file *file, void *priv, + const struct v4l2_tuner *v) +{ + struct radio_isa_card *isa = video_drvdata(file); + const struct radio_isa_ops *ops = isa->drv->ops; + + if (v->index) + return -EINVAL; + if (ops->s_stereo) { + isa->stereo = (v->audmode == V4L2_TUNER_MODE_STEREO); + return ops->s_stereo(isa, isa->stereo); + } + return 0; +} + +static int radio_isa_s_frequency(struct file *file, void *priv, + const struct v4l2_frequency *f) +{ + struct radio_isa_card *isa = video_drvdata(file); + u32 freq = f->frequency; + int res; + + if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO) + return -EINVAL; + freq = clamp(freq, FREQ_LOW, FREQ_HIGH); + res = isa->drv->ops->s_frequency(isa, freq); + if (res == 0) + isa->freq = freq; + return res; +} + +static int radio_isa_g_frequency(struct file *file, void *priv, + struct v4l2_frequency *f) +{ + struct radio_isa_card *isa = video_drvdata(file); + + if (f->tuner != 0) + return -EINVAL; + f->type = V4L2_TUNER_RADIO; + f->frequency = isa->freq; + return 0; +} + +static int radio_isa_s_ctrl(struct v4l2_ctrl *ctrl) +{ + struct radio_isa_card *isa = + container_of(ctrl->handler, struct radio_isa_card, hdl); + + switch (ctrl->id) { + case V4L2_CID_AUDIO_MUTE: + return isa->drv->ops->s_mute_volume(isa, ctrl->val, + isa->volume ? isa->volume->val : 0); + } + return -EINVAL; +} + +static int radio_isa_log_status(struct file *file, void *priv) +{ + struct radio_isa_card *isa = video_drvdata(file); + + v4l2_info(&isa->v4l2_dev, "I/O Port = 0x%03x\n", isa->io); + v4l2_ctrl_handler_log_status(&isa->hdl, isa->v4l2_dev.name); + return 0; +} + +static const struct v4l2_ctrl_ops radio_isa_ctrl_ops = { + .s_ctrl = radio_isa_s_ctrl, +}; + +static const struct v4l2_file_operations radio_isa_fops = { + .owner = THIS_MODULE, + .open = v4l2_fh_open, + .release = v4l2_fh_release, + .poll = v4l2_ctrl_poll, + .unlocked_ioctl = video_ioctl2, +}; + +static const struct v4l2_ioctl_ops radio_isa_ioctl_ops = { + .vidioc_querycap = radio_isa_querycap, + .vidioc_g_tuner = radio_isa_g_tuner, + .vidioc_s_tuner = radio_isa_s_tuner, + .vidioc_g_frequency = radio_isa_g_frequency, + .vidioc_s_frequency = radio_isa_s_frequency, + .vidioc_log_status = radio_isa_log_status, + .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, + .vidioc_unsubscribe_event = v4l2_event_unsubscribe, +}; + +int radio_isa_match(struct device *pdev, unsigned int dev) +{ + struct radio_isa_driver *drv = pdev->platform_data; + + return drv->probe || drv->io_params[dev] >= 0; +} +EXPORT_SYMBOL_GPL(radio_isa_match); + +static bool radio_isa_valid_io(const struct radio_isa_driver *drv, int io) +{ + int i; + + for (i = 0; i < drv->num_of_io_ports; i++) + if (drv->io_ports[i] == io) + return true; + return false; +} + +static struct radio_isa_card *radio_isa_alloc(struct radio_isa_driver *drv, + struct device *pdev) +{ + struct v4l2_device *v4l2_dev; + struct radio_isa_card *isa = drv->ops->alloc(); + if (!isa) + return NULL; + + dev_set_drvdata(pdev, isa); + isa->drv = drv; + v4l2_dev = &isa->v4l2_dev; + strlcpy(v4l2_dev->name, dev_name(pdev), sizeof(v4l2_dev->name)); + + return isa; +} + +static int radio_isa_common_probe(struct radio_isa_card *isa, + struct device *pdev, + int radio_nr, unsigned region_size) +{ + const struct radio_isa_driver *drv = isa->drv; + const struct radio_isa_ops *ops = drv->ops; + struct v4l2_device *v4l2_dev = &isa->v4l2_dev; + int res; + + if (!request_region(isa->io, region_size, v4l2_dev->name)) { + v4l2_err(v4l2_dev, "port 0x%x already in use\n", isa->io); + kfree(isa); + return -EBUSY; + } + + res = v4l2_device_register(pdev, v4l2_dev); + if (res < 0) { + v4l2_err(v4l2_dev, "Could not register v4l2_device\n"); + goto err_dev_reg; + } + + v4l2_ctrl_handler_init(&isa->hdl, 1); + isa->mute = v4l2_ctrl_new_std(&isa->hdl, &radio_isa_ctrl_ops, + V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1); + if (drv->max_volume) + isa->volume = v4l2_ctrl_new_std(&isa->hdl, &radio_isa_ctrl_ops, + V4L2_CID_AUDIO_VOLUME, 0, drv->max_volume, 1, + drv->max_volume); + v4l2_dev->ctrl_handler = &isa->hdl; + if (isa->hdl.error) { + res = isa->hdl.error; + v4l2_err(v4l2_dev, "Could not register controls\n"); + goto err_hdl; + } + if (drv->max_volume) + v4l2_ctrl_cluster(2, &isa->mute); + v4l2_dev->ctrl_handler = &isa->hdl; + + mutex_init(&isa->lock); + isa->vdev.lock = &isa->lock; + strlcpy(isa->vdev.name, v4l2_dev->name, sizeof(isa->vdev.name)); + isa->vdev.v4l2_dev = v4l2_dev; + isa->vdev.fops = &radio_isa_fops; + isa->vdev.ioctl_ops = &radio_isa_ioctl_ops; + isa->vdev.release = video_device_release_empty; + set_bit(V4L2_FL_USE_FH_PRIO, &isa->vdev.flags); + video_set_drvdata(&isa->vdev, isa); + isa->freq = FREQ_LOW; + isa->stereo = drv->has_stereo; + + if (ops->init) + res = ops->init(isa); + if (!res) + res = v4l2_ctrl_handler_setup(&isa->hdl); + if (!res) + res = ops->s_frequency(isa, isa->freq); + if (!res && ops->s_stereo) + res = ops->s_stereo(isa, isa->stereo); + if (res < 0) { + v4l2_err(v4l2_dev, "Could not setup card\n"); + goto err_hdl; + } + res = video_register_device(&isa->vdev, VFL_TYPE_RADIO, radio_nr); + + if (res < 0) { + v4l2_err(v4l2_dev, "Could not register device node\n"); + goto err_hdl; + } + + v4l2_info(v4l2_dev, "Initialized radio card %s on port 0x%03x\n", + drv->card, isa->io); + return 0; + +err_hdl: + v4l2_ctrl_handler_free(&isa->hdl); +err_dev_reg: + release_region(isa->io, region_size); + kfree(isa); + return res; +} + +static int radio_isa_common_remove(struct radio_isa_card *isa, + unsigned region_size) +{ + const struct radio_isa_ops *ops = isa->drv->ops; + + ops->s_mute_volume(isa, true, isa->volume ? isa->volume->cur.val : 0); + video_unregister_device(&isa->vdev); + v4l2_ctrl_handler_free(&isa->hdl); + v4l2_device_unregister(&isa->v4l2_dev); + release_region(isa->io, region_size); + v4l2_info(&isa->v4l2_dev, "Removed radio card %s\n", isa->drv->card); + kfree(isa); + return 0; +} + +int radio_isa_probe(struct device *pdev, unsigned int dev) +{ + struct radio_isa_driver *drv = pdev->platform_data; + const struct radio_isa_ops *ops = drv->ops; + struct v4l2_device *v4l2_dev; + struct radio_isa_card *isa; + + isa = radio_isa_alloc(drv, pdev); + if (!isa) + return -ENOMEM; + isa->io = drv->io_params[dev]; + v4l2_dev = &isa->v4l2_dev; + + if (drv->probe && ops->probe) { + int i; + + for (i = 0; i < drv->num_of_io_ports; ++i) { + int io = drv->io_ports[i]; + + if (request_region(io, drv->region_size, v4l2_dev->name)) { + bool found = ops->probe(isa, io); + + release_region(io, drv->region_size); + if (found) { + isa->io = io; + break; + } + } + } + } + + if (!radio_isa_valid_io(drv, isa->io)) { + int i; + + if (isa->io < 0) + return -ENODEV; + v4l2_err(v4l2_dev, "you must set an I/O address with io=0x%03x", + drv->io_ports[0]); + for (i = 1; i < drv->num_of_io_ports; i++) + printk(KERN_CONT "/0x%03x", drv->io_ports[i]); + printk(KERN_CONT ".\n"); + kfree(isa); + return -EINVAL; + } + + return radio_isa_common_probe(isa, pdev, drv->radio_nr_params[dev], + drv->region_size); +} +EXPORT_SYMBOL_GPL(radio_isa_probe); + +int radio_isa_remove(struct device *pdev, unsigned int dev) +{ + struct radio_isa_card *isa = dev_get_drvdata(pdev); + + return radio_isa_common_remove(isa, isa->drv->region_size); +} +EXPORT_SYMBOL_GPL(radio_isa_remove); + +#ifdef CONFIG_PNP +int radio_isa_pnp_probe(struct pnp_dev *dev, const struct pnp_device_id *dev_id) +{ + struct pnp_driver *pnp_drv = to_pnp_driver(dev->dev.driver); + struct radio_isa_driver *drv = container_of(pnp_drv, + struct radio_isa_driver, pnp_driver); + struct radio_isa_card *isa; + + if (!pnp_port_valid(dev, 0)) + return -ENODEV; + + isa = radio_isa_alloc(drv, &dev->dev); + if (!isa) + return -ENOMEM; + + isa->io = pnp_port_start(dev, 0); + + return radio_isa_common_probe(isa, &dev->dev, drv->radio_nr_params[0], + pnp_port_len(dev, 0)); +} +EXPORT_SYMBOL_GPL(radio_isa_pnp_probe); + +void radio_isa_pnp_remove(struct pnp_dev *dev) +{ + struct radio_isa_card *isa = dev_get_drvdata(&dev->dev); + + radio_isa_common_remove(isa, pnp_port_len(dev, 0)); +} +EXPORT_SYMBOL_GPL(radio_isa_pnp_remove); +#endif diff --git a/drivers/media/radio/radio-isa.h b/drivers/media/radio/radio-isa.h new file mode 100644 index 0000000..ba4c01f --- /dev/null +++ b/drivers/media/radio/radio-isa.h @@ -0,0 +1,114 @@ +/* + * Framework for ISA radio drivers. + * This takes care of all the V4L2 scaffolding, allowing the ISA drivers + * to concentrate on the actual hardware operation. + * + * Copyright (C) 2012 Hans Verkuil <hans.verkuil@cisco.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA + * 02110-1301 USA + */ + +#ifndef _RADIO_ISA_H_ +#define _RADIO_ISA_H_ + +#include <linux/isa.h> +#include <linux/pnp.h> +#include <linux/videodev2.h> +#include <media/v4l2-device.h> +#include <media/v4l2-ctrls.h> + +struct radio_isa_driver; +struct radio_isa_ops; + +/* Core structure for radio ISA cards */ +struct radio_isa_card { + const struct radio_isa_driver *drv; + struct v4l2_device v4l2_dev; + struct v4l2_ctrl_handler hdl; + struct video_device vdev; + struct mutex lock; + const struct radio_isa_ops *ops; + struct { /* mute/volume cluster */ + struct v4l2_ctrl *mute; + struct v4l2_ctrl *volume; + }; + /* I/O port */ + int io; + + /* Card is in stereo audio mode */ + bool stereo; + /* Current frequency */ + u32 freq; +}; + +struct radio_isa_ops { + /* Allocate and initialize a radio_isa_card struct */ + struct radio_isa_card *(*alloc)(void); + /* Probe whether a card is present at the given port */ + bool (*probe)(struct radio_isa_card *isa, int io); + /* Special card initialization can be done here, this is called after + * the standard controls are registered, but before they are setup, + * thus allowing drivers to add their own controls here. */ + int (*init)(struct radio_isa_card *isa); + /* Set mute and volume. */ + int (*s_mute_volume)(struct radio_isa_card *isa, bool mute, int volume); + /* Set frequency */ + int (*s_frequency)(struct radio_isa_card *isa, u32 freq); + /* Set stereo/mono audio mode */ + int (*s_stereo)(struct radio_isa_card *isa, bool stereo); + /* Get rxsubchans value for VIDIOC_G_TUNER */ + u32 (*g_rxsubchans)(struct radio_isa_card *isa); + /* Get the signal strength for VIDIOC_G_TUNER */ + u32 (*g_signal)(struct radio_isa_card *isa); +}; + +/* Top level structure needed to instantiate the cards */ +struct radio_isa_driver { + struct isa_driver driver; +#ifdef CONFIG_PNP + struct pnp_driver pnp_driver; +#endif + const struct radio_isa_ops *ops; + /* The module_param_array with the specified I/O ports */ + int *io_params; + /* The module_param_array with the radio_nr values */ + int *radio_nr_params; + /* Whether we should probe for possible cards */ + bool probe; + /* The list of possible I/O ports */ + const int *io_ports; + /* The size of that list */ + int num_of_io_ports; + /* The region size to request */ + unsigned region_size; + /* The name of the card */ + const char *card; + /* Card can capture stereo audio */ + bool has_stereo; + /* The maximum volume for the volume control. If 0, then there + is no volume control possible. */ + int max_volume; +}; + +int radio_isa_match(struct device *pdev, unsigned int dev); +int radio_isa_probe(struct device *pdev, unsigned int dev); +int radio_isa_remove(struct device *pdev, unsigned int dev); +#ifdef CONFIG_PNP +int radio_isa_pnp_probe(struct pnp_dev *dev, + const struct pnp_device_id *dev_id); +void radio_isa_pnp_remove(struct pnp_dev *dev); +#endif + +#endif diff --git a/drivers/media/radio/radio-keene.c b/drivers/media/radio/radio-keene.c new file mode 100644 index 0000000..4c9ae76 --- /dev/null +++ b/drivers/media/radio/radio-keene.c @@ -0,0 +1,434 @@ +/* + * Copyright (c) 2012 Hans Verkuil <hverkuil@xs4all.nl> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +/* kernel includes */ +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/slab.h> +#include <linux/input.h> +#include <linux/videodev2.h> +#include <media/v4l2-device.h> +#include <media/v4l2-ioctl.h> +#include <media/v4l2-ctrls.h> +#include <media/v4l2-event.h> +#include <linux/usb.h> +#include <linux/mutex.h> + +/* driver and module definitions */ +MODULE_AUTHOR("Hans Verkuil <hverkuil@xs4all.nl>"); +MODULE_DESCRIPTION("Keene FM Transmitter driver"); +MODULE_LICENSE("GPL"); + +/* Actually, it advertises itself as a Logitech */ +#define USB_KEENE_VENDOR 0x046d +#define USB_KEENE_PRODUCT 0x0a0e + +/* Probably USB_TIMEOUT should be modified in module parameter */ +#define BUFFER_LENGTH 8 +#define USB_TIMEOUT 500 + +/* Frequency limits in MHz */ +#define FREQ_MIN 76U +#define FREQ_MAX 108U +#define FREQ_MUL 16000U + +/* USB Device ID List */ +static struct usb_device_id usb_keene_device_table[] = { + {USB_DEVICE_AND_INTERFACE_INFO(USB_KEENE_VENDOR, USB_KEENE_PRODUCT, + USB_CLASS_HID, 0, 0) }, + { } /* Terminating entry */ +}; + +MODULE_DEVICE_TABLE(usb, usb_keene_device_table); + +struct keene_device { + struct usb_device *usbdev; + struct usb_interface *intf; + struct video_device vdev; + struct v4l2_device v4l2_dev; + struct v4l2_ctrl_handler hdl; + struct mutex lock; + + u8 *buffer; + unsigned curfreq; + u8 tx; + u8 pa; + bool stereo; + bool muted; + bool preemph_75_us; +}; + +static inline struct keene_device *to_keene_dev(struct v4l2_device *v4l2_dev) +{ + return container_of(v4l2_dev, struct keene_device, v4l2_dev); +} + +/* Set frequency (if non-0), PA, mute and turn on/off the FM transmitter. */ +static int keene_cmd_main(struct keene_device *radio, unsigned freq, bool play) +{ + unsigned short freq_send = freq ? (freq - 76 * 16000) / 800 : 0; + int ret; + + radio->buffer[0] = 0x00; + radio->buffer[1] = 0x50; + radio->buffer[2] = (freq_send >> 8) & 0xff; + radio->buffer[3] = freq_send & 0xff; + radio->buffer[4] = radio->pa; + /* If bit 4 is set, then tune to the frequency. + If bit 3 is set, then unmute; if bit 2 is set, then mute. + If bit 1 is set, then enter idle mode; if bit 0 is set, + then enter transit mode. + */ + radio->buffer[5] = (radio->muted ? 4 : 8) | (play ? 1 : 2) | + (freq ? 0x10 : 0); + radio->buffer[6] = 0x00; + radio->buffer[7] = 0x00; + + ret = usb_control_msg(radio->usbdev, usb_sndctrlpipe(radio->usbdev, 0), + 9, 0x21, 0x200, 2, radio->buffer, BUFFER_LENGTH, USB_TIMEOUT); + + if (ret < 0) { + dev_warn(&radio->vdev.dev, "%s failed (%d)\n", __func__, ret); + return ret; + } + if (freq) + radio->curfreq = freq; + return 0; +} + +/* Set TX, stereo and preemphasis mode (50 us vs 75 us). */ +static int keene_cmd_set(struct keene_device *radio) +{ + int ret; + + radio->buffer[0] = 0x00; + radio->buffer[1] = 0x51; + radio->buffer[2] = radio->tx; + /* If bit 0 is set, then transmit mono, otherwise stereo. + If bit 2 is set, then enable 75 us preemphasis, otherwise + it is 50 us. */ + radio->buffer[3] = (!radio->stereo) | (radio->preemph_75_us ? 4 : 0); + radio->buffer[4] = 0x00; + radio->buffer[5] = 0x00; + radio->buffer[6] = 0x00; + radio->buffer[7] = 0x00; + + ret = usb_control_msg(radio->usbdev, usb_sndctrlpipe(radio->usbdev, 0), + 9, 0x21, 0x200, 2, radio->buffer, BUFFER_LENGTH, USB_TIMEOUT); + + if (ret < 0) { + dev_warn(&radio->vdev.dev, "%s failed (%d)\n", __func__, ret); + return ret; + } + return 0; +} + +/* Handle unplugging the device. + * We call video_unregister_device in any case. + * The last function called in this procedure is + * usb_keene_device_release. + */ +static void usb_keene_disconnect(struct usb_interface *intf) +{ + struct keene_device *radio = to_keene_dev(usb_get_intfdata(intf)); + + mutex_lock(&radio->lock); + usb_set_intfdata(intf, NULL); + video_unregister_device(&radio->vdev); + v4l2_device_disconnect(&radio->v4l2_dev); + mutex_unlock(&radio->lock); + v4l2_device_put(&radio->v4l2_dev); +} + +static int usb_keene_suspend(struct usb_interface *intf, pm_message_t message) +{ + struct keene_device *radio = to_keene_dev(usb_get_intfdata(intf)); + + return keene_cmd_main(radio, 0, false); +} + +static int usb_keene_resume(struct usb_interface *intf) +{ + struct keene_device *radio = to_keene_dev(usb_get_intfdata(intf)); + + mdelay(50); + keene_cmd_set(radio); + keene_cmd_main(radio, radio->curfreq, true); + return 0; +} + +static int vidioc_querycap(struct file *file, void *priv, + struct v4l2_capability *v) +{ + struct keene_device *radio = video_drvdata(file); + + strlcpy(v->driver, "radio-keene", sizeof(v->driver)); + strlcpy(v->card, "Keene FM Transmitter", sizeof(v->card)); + usb_make_path(radio->usbdev, v->bus_info, sizeof(v->bus_info)); + v->device_caps = V4L2_CAP_RADIO | V4L2_CAP_MODULATOR; + v->capabilities = v->device_caps | V4L2_CAP_DEVICE_CAPS; + return 0; +} + +static int vidioc_g_modulator(struct file *file, void *priv, + struct v4l2_modulator *v) +{ + struct keene_device *radio = video_drvdata(file); + + if (v->index > 0) + return -EINVAL; + + strlcpy(v->name, "FM", sizeof(v->name)); + v->rangelow = FREQ_MIN * FREQ_MUL; + v->rangehigh = FREQ_MAX * FREQ_MUL; + v->txsubchans = radio->stereo ? V4L2_TUNER_SUB_STEREO : V4L2_TUNER_SUB_MONO; + v->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO; + return 0; +} + +static int vidioc_s_modulator(struct file *file, void *priv, + const struct v4l2_modulator *v) +{ + struct keene_device *radio = video_drvdata(file); + + if (v->index > 0) + return -EINVAL; + + radio->stereo = (v->txsubchans == V4L2_TUNER_SUB_STEREO); + return keene_cmd_set(radio); +} + +static int vidioc_s_frequency(struct file *file, void *priv, + const struct v4l2_frequency *f) +{ + struct keene_device *radio = video_drvdata(file); + unsigned freq = f->frequency; + + if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO) + return -EINVAL; + freq = clamp(freq, FREQ_MIN * FREQ_MUL, FREQ_MAX * FREQ_MUL); + return keene_cmd_main(radio, freq, true); +} + +static int vidioc_g_frequency(struct file *file, void *priv, + struct v4l2_frequency *f) +{ + struct keene_device *radio = video_drvdata(file); + + if (f->tuner != 0) + return -EINVAL; + f->type = V4L2_TUNER_RADIO; + f->frequency = radio->curfreq; + return 0; +} + +static int keene_s_ctrl(struct v4l2_ctrl *ctrl) +{ + static const u8 db2tx[] = { + /* -15, -12, -9, -6, -3, 0 dB */ + 0x03, 0x13, 0x02, 0x12, 0x22, 0x32, + /* 3, 6, 9, 12, 15, 18 dB */ + 0x21, 0x31, 0x20, 0x30, 0x40, 0x50 + }; + struct keene_device *radio = + container_of(ctrl->handler, struct keene_device, hdl); + + switch (ctrl->id) { + case V4L2_CID_AUDIO_MUTE: + radio->muted = ctrl->val; + return keene_cmd_main(radio, 0, true); + + case V4L2_CID_TUNE_POWER_LEVEL: + /* To go from dBuV to the register value we apply the + following formula: */ + radio->pa = (ctrl->val - 71) * 100 / 62; + return keene_cmd_main(radio, 0, true); + + case V4L2_CID_TUNE_PREEMPHASIS: + radio->preemph_75_us = ctrl->val == V4L2_PREEMPHASIS_75_uS; + return keene_cmd_set(radio); + + case V4L2_CID_AUDIO_COMPRESSION_GAIN: + radio->tx = db2tx[(ctrl->val - ctrl->minimum) / ctrl->step]; + return keene_cmd_set(radio); + } + return -EINVAL; +} + +/* File system interface */ +static const struct v4l2_file_operations usb_keene_fops = { + .owner = THIS_MODULE, + .open = v4l2_fh_open, + .release = v4l2_fh_release, + .poll = v4l2_ctrl_poll, + .unlocked_ioctl = video_ioctl2, +}; + +static const struct v4l2_ctrl_ops keene_ctrl_ops = { + .s_ctrl = keene_s_ctrl, +}; + +static const struct v4l2_ioctl_ops usb_keene_ioctl_ops = { + .vidioc_querycap = vidioc_querycap, + .vidioc_g_modulator = vidioc_g_modulator, + .vidioc_s_modulator = vidioc_s_modulator, + .vidioc_g_frequency = vidioc_g_frequency, + .vidioc_s_frequency = vidioc_s_frequency, + .vidioc_log_status = v4l2_ctrl_log_status, + .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, + .vidioc_unsubscribe_event = v4l2_event_unsubscribe, +}; + +static void usb_keene_video_device_release(struct v4l2_device *v4l2_dev) +{ + struct keene_device *radio = to_keene_dev(v4l2_dev); + + /* free rest memory */ + v4l2_ctrl_handler_free(&radio->hdl); + kfree(radio->buffer); + kfree(radio); +} + +/* check if the device is present and register with v4l and usb if it is */ +static int usb_keene_probe(struct usb_interface *intf, + const struct usb_device_id *id) +{ + struct usb_device *dev = interface_to_usbdev(intf); + struct keene_device *radio; + struct v4l2_ctrl_handler *hdl; + int retval = 0; + + /* + * The Keene FM transmitter USB device has the same USB ID as + * the Logitech AudioHub Speaker, but it should ignore the hid. + * Check if the name is that of the Keene device. + * If not, then someone connected the AudioHub and we shouldn't + * attempt to handle this driver. + * For reference: the product name of the AudioHub is + * "AudioHub Speaker". + */ + if (dev->product && strcmp(dev->product, "B-LINK USB Audio ")) + return -ENODEV; + + radio = kzalloc(sizeof(struct keene_device), GFP_KERNEL); + if (radio) + radio->buffer = kmalloc(BUFFER_LENGTH, GFP_KERNEL); + + if (!radio || !radio->buffer) { + dev_err(&intf->dev, "kmalloc for keene_device failed\n"); + kfree(radio); + retval = -ENOMEM; + goto err; + } + + hdl = &radio->hdl; + v4l2_ctrl_handler_init(hdl, 4); + v4l2_ctrl_new_std(hdl, &keene_ctrl_ops, V4L2_CID_AUDIO_MUTE, + 0, 1, 1, 0); + v4l2_ctrl_new_std_menu(hdl, &keene_ctrl_ops, V4L2_CID_TUNE_PREEMPHASIS, + V4L2_PREEMPHASIS_75_uS, 1, V4L2_PREEMPHASIS_50_uS); + v4l2_ctrl_new_std(hdl, &keene_ctrl_ops, V4L2_CID_TUNE_POWER_LEVEL, + 84, 118, 1, 118); + v4l2_ctrl_new_std(hdl, &keene_ctrl_ops, V4L2_CID_AUDIO_COMPRESSION_GAIN, + -15, 18, 3, 0); + radio->pa = 118; + radio->tx = 0x32; + radio->stereo = true; + radio->curfreq = 95.16 * FREQ_MUL; + if (hdl->error) { + retval = hdl->error; + + v4l2_ctrl_handler_free(hdl); + goto err_v4l2; + } + retval = v4l2_device_register(&intf->dev, &radio->v4l2_dev); + if (retval < 0) { + dev_err(&intf->dev, "couldn't register v4l2_device\n"); + goto err_v4l2; + } + + mutex_init(&radio->lock); + + radio->v4l2_dev.ctrl_handler = hdl; + radio->v4l2_dev.release = usb_keene_video_device_release; + strlcpy(radio->vdev.name, radio->v4l2_dev.name, + sizeof(radio->vdev.name)); + radio->vdev.v4l2_dev = &radio->v4l2_dev; + radio->vdev.fops = &usb_keene_fops; + radio->vdev.ioctl_ops = &usb_keene_ioctl_ops; + radio->vdev.lock = &radio->lock; + radio->vdev.release = video_device_release_empty; + radio->vdev.vfl_dir = VFL_DIR_TX; + + radio->usbdev = interface_to_usbdev(intf); + radio->intf = intf; + usb_set_intfdata(intf, &radio->v4l2_dev); + + video_set_drvdata(&radio->vdev, radio); + set_bit(V4L2_FL_USE_FH_PRIO, &radio->vdev.flags); + + retval = video_register_device(&radio->vdev, VFL_TYPE_RADIO, -1); + if (retval < 0) { + dev_err(&intf->dev, "could not register video device\n"); + goto err_vdev; + } + v4l2_ctrl_handler_setup(hdl); + dev_info(&intf->dev, "V4L2 device registered as %s\n", + video_device_node_name(&radio->vdev)); + return 0; + +err_vdev: + v4l2_device_unregister(&radio->v4l2_dev); +err_v4l2: + kfree(radio->buffer); + kfree(radio); +err: + return retval; +} + +/* USB subsystem interface */ +static struct usb_driver usb_keene_driver = { + .name = "radio-keene", + .probe = usb_keene_probe, + .disconnect = usb_keene_disconnect, + .id_table = usb_keene_device_table, + .suspend = usb_keene_suspend, + .resume = usb_keene_resume, + .reset_resume = usb_keene_resume, +}; + +static int __init keene_init(void) +{ + int retval = usb_register(&usb_keene_driver); + + if (retval) + pr_err(KBUILD_MODNAME + ": usb_register failed. Error number %d\n", retval); + + return retval; +} + +static void __exit keene_exit(void) +{ + usb_deregister(&usb_keene_driver); +} + +module_init(keene_init); +module_exit(keene_exit); + diff --git a/drivers/media/radio/radio-ma901.c b/drivers/media/radio/radio-ma901.c new file mode 100644 index 0000000..a85b064 --- /dev/null +++ b/drivers/media/radio/radio-ma901.c @@ -0,0 +1,471 @@ +/* + * Driver for the MasterKit MA901 USB FM radio. This device plugs + * into the USB port and an analog audio input or headphones, so this thing + * only deals with initialization, frequency setting, volume. + * + * Copyright (c) 2012 Alexey Klimov <klimov.linux@gmail.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/slab.h> +#include <linux/input.h> +#include <linux/videodev2.h> +#include <media/v4l2-device.h> +#include <media/v4l2-ioctl.h> +#include <media/v4l2-ctrls.h> +#include <media/v4l2-event.h> +#include <linux/usb.h> +#include <linux/mutex.h> + +#define DRIVER_AUTHOR "Alexey Klimov <klimov.linux@gmail.com>" +#define DRIVER_DESC "Masterkit MA901 USB FM radio driver" +#define DRIVER_VERSION "0.0.1" + +MODULE_AUTHOR(DRIVER_AUTHOR); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_LICENSE("GPL"); +MODULE_VERSION(DRIVER_VERSION); + +#define USB_MA901_VENDOR 0x16c0 +#define USB_MA901_PRODUCT 0x05df + +/* dev_warn macro with driver name */ +#define MA901_DRIVER_NAME "radio-ma901" +#define ma901radio_dev_warn(dev, fmt, arg...) \ + dev_warn(dev, MA901_DRIVER_NAME " - " fmt, ##arg) + +#define ma901radio_dev_err(dev, fmt, arg...) \ + dev_err(dev, MA901_DRIVER_NAME " - " fmt, ##arg) + +/* Probably USB_TIMEOUT should be modified in module parameter */ +#define BUFFER_LENGTH 8 +#define USB_TIMEOUT 500 + +#define FREQ_MIN 87.5 +#define FREQ_MAX 108.0 +#define FREQ_MUL 16000 + +#define MA901_VOLUME_MAX 16 +#define MA901_VOLUME_MIN 0 + +/* Commands that device should understand + * List isn't full and will be updated with implementation of new functions + */ +#define MA901_RADIO_SET_FREQ 0x03 +#define MA901_RADIO_SET_VOLUME 0x04 +#define MA901_RADIO_SET_MONO_STEREO 0x05 + +/* Comfortable defines for ma901radio_set_stereo */ +#define MA901_WANT_STEREO 0x50 +#define MA901_WANT_MONO 0xd0 + +/* module parameter */ +static int radio_nr = -1; +module_param(radio_nr, int, 0); +MODULE_PARM_DESC(radio_nr, "Radio file number"); + +/* Data for one (physical) device */ +struct ma901radio_device { + /* reference to USB and video device */ + struct usb_device *usbdev; + struct usb_interface *intf; + struct video_device vdev; + struct v4l2_device v4l2_dev; + struct v4l2_ctrl_handler hdl; + + u8 *buffer; + struct mutex lock; /* buffer locking */ + int curfreq; + u16 volume; + int stereo; + bool muted; +}; + +static inline struct ma901radio_device *to_ma901radio_dev(struct v4l2_device *v4l2_dev) +{ + return container_of(v4l2_dev, struct ma901radio_device, v4l2_dev); +} + +/* set a frequency, freq is defined by v4l's TUNER_LOW, i.e. 1/16th kHz */ +static int ma901radio_set_freq(struct ma901radio_device *radio, int freq) +{ + unsigned int freq_send = 0x300 + (freq >> 5) / 25; + int retval; + + radio->buffer[0] = 0x0a; + radio->buffer[1] = MA901_RADIO_SET_FREQ; + radio->buffer[2] = ((freq_send >> 8) & 0xff) + 0x80; + radio->buffer[3] = freq_send & 0xff; + radio->buffer[4] = 0x00; + radio->buffer[5] = 0x00; + radio->buffer[6] = 0x00; + radio->buffer[7] = 0x00; + + retval = usb_control_msg(radio->usbdev, usb_sndctrlpipe(radio->usbdev, 0), + 9, 0x21, 0x0300, 0, + radio->buffer, BUFFER_LENGTH, USB_TIMEOUT); + if (retval < 0) + return retval; + + radio->curfreq = freq; + return 0; +} + +static int ma901radio_set_volume(struct ma901radio_device *radio, u16 vol_to_set) +{ + int retval; + + radio->buffer[0] = 0x0a; + radio->buffer[1] = MA901_RADIO_SET_VOLUME; + radio->buffer[2] = 0xc2; + radio->buffer[3] = vol_to_set + 0x20; + radio->buffer[4] = 0x00; + radio->buffer[5] = 0x00; + radio->buffer[6] = 0x00; + radio->buffer[7] = 0x00; + + retval = usb_control_msg(radio->usbdev, usb_sndctrlpipe(radio->usbdev, 0), + 9, 0x21, 0x0300, 0, + radio->buffer, BUFFER_LENGTH, USB_TIMEOUT); + if (retval < 0) + return retval; + + radio->volume = vol_to_set; + return retval; +} + +static int ma901_set_stereo(struct ma901radio_device *radio, u8 stereo) +{ + int retval; + + radio->buffer[0] = 0x0a; + radio->buffer[1] = MA901_RADIO_SET_MONO_STEREO; + radio->buffer[2] = stereo; + radio->buffer[3] = 0x00; + radio->buffer[4] = 0x00; + radio->buffer[5] = 0x00; + radio->buffer[6] = 0x00; + radio->buffer[7] = 0x00; + + retval = usb_control_msg(radio->usbdev, usb_sndctrlpipe(radio->usbdev, 0), + 9, 0x21, 0x0300, 0, + radio->buffer, BUFFER_LENGTH, USB_TIMEOUT); + + if (retval < 0) + return retval; + + if (stereo == MA901_WANT_STEREO) + radio->stereo = V4L2_TUNER_MODE_STEREO; + else + radio->stereo = V4L2_TUNER_MODE_MONO; + + return retval; +} + +/* Handle unplugging the device. + * We call video_unregister_device in any case. + * The last function called in this procedure is + * usb_ma901radio_device_release. + */ +static void usb_ma901radio_disconnect(struct usb_interface *intf) +{ + struct ma901radio_device *radio = to_ma901radio_dev(usb_get_intfdata(intf)); + + mutex_lock(&radio->lock); + video_unregister_device(&radio->vdev); + usb_set_intfdata(intf, NULL); + v4l2_device_disconnect(&radio->v4l2_dev); + mutex_unlock(&radio->lock); + v4l2_device_put(&radio->v4l2_dev); +} + +/* vidioc_querycap - query device capabilities */ +static int vidioc_querycap(struct file *file, void *priv, + struct v4l2_capability *v) +{ + struct ma901radio_device *radio = video_drvdata(file); + + strlcpy(v->driver, "radio-ma901", sizeof(v->driver)); + strlcpy(v->card, "Masterkit MA901 USB FM Radio", sizeof(v->card)); + usb_make_path(radio->usbdev, v->bus_info, sizeof(v->bus_info)); + v->device_caps = V4L2_CAP_RADIO | V4L2_CAP_TUNER; + v->capabilities = v->device_caps | V4L2_CAP_DEVICE_CAPS; + return 0; +} + +/* vidioc_g_tuner - get tuner attributes */ +static int vidioc_g_tuner(struct file *file, void *priv, + struct v4l2_tuner *v) +{ + struct ma901radio_device *radio = video_drvdata(file); + + if (v->index > 0) + return -EINVAL; + + v->signal = 0; + + /* TODO: the same words like in _probe() goes here. + * When receiving of stats will be implemented then we can call + * ma901radio_get_stat(). + * retval = ma901radio_get_stat(radio, &is_stereo, &v->signal); + */ + + strcpy(v->name, "FM"); + v->type = V4L2_TUNER_RADIO; + v->rangelow = FREQ_MIN * FREQ_MUL; + v->rangehigh = FREQ_MAX * FREQ_MUL; + v->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO; + /* v->rxsubchans = is_stereo ? V4L2_TUNER_SUB_STEREO : V4L2_TUNER_SUB_MONO; */ + v->audmode = radio->stereo ? + V4L2_TUNER_MODE_STEREO : V4L2_TUNER_MODE_MONO; + return 0; +} + +/* vidioc_s_tuner - set tuner attributes */ +static int vidioc_s_tuner(struct file *file, void *priv, + const struct v4l2_tuner *v) +{ + struct ma901radio_device *radio = video_drvdata(file); + + if (v->index > 0) + return -EINVAL; + + /* mono/stereo selector */ + switch (v->audmode) { + case V4L2_TUNER_MODE_MONO: + return ma901_set_stereo(radio, MA901_WANT_MONO); + default: + return ma901_set_stereo(radio, MA901_WANT_STEREO); + } +} + +/* vidioc_s_frequency - set tuner radio frequency */ +static int vidioc_s_frequency(struct file *file, void *priv, + const struct v4l2_frequency *f) +{ + struct ma901radio_device *radio = video_drvdata(file); + + if (f->tuner != 0) + return -EINVAL; + + return ma901radio_set_freq(radio, clamp_t(unsigned, f->frequency, + FREQ_MIN * FREQ_MUL, FREQ_MAX * FREQ_MUL)); +} + +/* vidioc_g_frequency - get tuner radio frequency */ +static int vidioc_g_frequency(struct file *file, void *priv, + struct v4l2_frequency *f) +{ + struct ma901radio_device *radio = video_drvdata(file); + + if (f->tuner != 0) + return -EINVAL; + f->frequency = radio->curfreq; + + return 0; +} + +static int usb_ma901radio_s_ctrl(struct v4l2_ctrl *ctrl) +{ + struct ma901radio_device *radio = + container_of(ctrl->handler, struct ma901radio_device, hdl); + + switch (ctrl->id) { + case V4L2_CID_AUDIO_VOLUME: /* set volume */ + return ma901radio_set_volume(radio, (u16)ctrl->val); + } + + return -EINVAL; +} + +/* TODO: Should we really need to implement suspend and resume functions? + * Radio has it's own memory and will continue playing if power is present + * on usb port and on resume it will start to play again based on freq, volume + * values in device memory. + */ +static int usb_ma901radio_suspend(struct usb_interface *intf, pm_message_t message) +{ + return 0; +} + +static int usb_ma901radio_resume(struct usb_interface *intf) +{ + return 0; +} + +static const struct v4l2_ctrl_ops usb_ma901radio_ctrl_ops = { + .s_ctrl = usb_ma901radio_s_ctrl, +}; + +/* File system interface */ +static const struct v4l2_file_operations usb_ma901radio_fops = { + .owner = THIS_MODULE, + .open = v4l2_fh_open, + .release = v4l2_fh_release, + .poll = v4l2_ctrl_poll, + .unlocked_ioctl = video_ioctl2, +}; + +static const struct v4l2_ioctl_ops usb_ma901radio_ioctl_ops = { + .vidioc_querycap = vidioc_querycap, + .vidioc_g_tuner = vidioc_g_tuner, + .vidioc_s_tuner = vidioc_s_tuner, + .vidioc_g_frequency = vidioc_g_frequency, + .vidioc_s_frequency = vidioc_s_frequency, + .vidioc_log_status = v4l2_ctrl_log_status, + .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, + .vidioc_unsubscribe_event = v4l2_event_unsubscribe, +}; + +static void usb_ma901radio_release(struct v4l2_device *v4l2_dev) +{ + struct ma901radio_device *radio = to_ma901radio_dev(v4l2_dev); + + v4l2_ctrl_handler_free(&radio->hdl); + v4l2_device_unregister(&radio->v4l2_dev); + kfree(radio->buffer); + kfree(radio); +} + +/* check if the device is present and register with v4l and usb if it is */ +static int usb_ma901radio_probe(struct usb_interface *intf, + const struct usb_device_id *id) +{ + struct usb_device *dev = interface_to_usbdev(intf); + struct ma901radio_device *radio; + int retval = 0; + + /* Masterkit MA901 usb radio has the same USB ID as many others + * Atmel V-USB devices. Let's make additional checks to be sure + * that this is our device. + */ + + if (dev->product && dev->manufacturer && + (strncmp(dev->product, "MA901", 5) != 0 + || strncmp(dev->manufacturer, "www.masterkit.ru", 16) != 0)) + return -ENODEV; + + radio = kzalloc(sizeof(struct ma901radio_device), GFP_KERNEL); + if (!radio) { + dev_err(&intf->dev, "kzalloc for ma901radio_device failed\n"); + retval = -ENOMEM; + goto err; + } + + radio->buffer = kmalloc(BUFFER_LENGTH, GFP_KERNEL); + if (!radio->buffer) { + dev_err(&intf->dev, "kmalloc for radio->buffer failed\n"); + retval = -ENOMEM; + goto err_nobuf; + } + + retval = v4l2_device_register(&intf->dev, &radio->v4l2_dev); + if (retval < 0) { + dev_err(&intf->dev, "couldn't register v4l2_device\n"); + goto err_v4l2; + } + + v4l2_ctrl_handler_init(&radio->hdl, 1); + + /* TODO:It looks like this radio doesn't have mute/unmute control + * and windows program just emulate it using volume control. + * Let's plan to do the same in this driver. + * + * v4l2_ctrl_new_std(&radio->hdl, &usb_ma901radio_ctrl_ops, + * V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1); + */ + + v4l2_ctrl_new_std(&radio->hdl, &usb_ma901radio_ctrl_ops, + V4L2_CID_AUDIO_VOLUME, MA901_VOLUME_MIN, + MA901_VOLUME_MAX, 1, MA901_VOLUME_MAX); + + if (radio->hdl.error) { + retval = radio->hdl.error; + dev_err(&intf->dev, "couldn't register control\n"); + goto err_ctrl; + } + mutex_init(&radio->lock); + + radio->v4l2_dev.ctrl_handler = &radio->hdl; + radio->v4l2_dev.release = usb_ma901radio_release; + strlcpy(radio->vdev.name, radio->v4l2_dev.name, + sizeof(radio->vdev.name)); + radio->vdev.v4l2_dev = &radio->v4l2_dev; + radio->vdev.fops = &usb_ma901radio_fops; + radio->vdev.ioctl_ops = &usb_ma901radio_ioctl_ops; + radio->vdev.release = video_device_release_empty; + radio->vdev.lock = &radio->lock; + set_bit(V4L2_FL_USE_FH_PRIO, &radio->vdev.flags); + + radio->usbdev = interface_to_usbdev(intf); + radio->intf = intf; + usb_set_intfdata(intf, &radio->v4l2_dev); + radio->curfreq = 95.21 * FREQ_MUL; + + video_set_drvdata(&radio->vdev, radio); + + /* TODO: we can get some statistics (freq, volume) from device + * but it's not implemented yet. After insertion in usb-port radio + * setups frequency and starts playing without any initialization. + * So we don't call usb_ma901radio_init/get_stat() here. + * retval = usb_ma901radio_init(radio); + */ + + retval = video_register_device(&radio->vdev, VFL_TYPE_RADIO, + radio_nr); + if (retval < 0) { + dev_err(&intf->dev, "could not register video device\n"); + goto err_vdev; + } + + return 0; + +err_vdev: + v4l2_ctrl_handler_free(&radio->hdl); +err_ctrl: + v4l2_device_unregister(&radio->v4l2_dev); +err_v4l2: + kfree(radio->buffer); +err_nobuf: + kfree(radio); +err: + return retval; +} + +/* USB Device ID List */ +static struct usb_device_id usb_ma901radio_device_table[] = { + { USB_DEVICE_AND_INTERFACE_INFO(USB_MA901_VENDOR, USB_MA901_PRODUCT, + USB_CLASS_HID, 0, 0) }, + { } /* Terminating entry */ +}; + +MODULE_DEVICE_TABLE(usb, usb_ma901radio_device_table); + +/* USB subsystem interface */ +static struct usb_driver usb_ma901radio_driver = { + .name = MA901_DRIVER_NAME, + .probe = usb_ma901radio_probe, + .disconnect = usb_ma901radio_disconnect, + .suspend = usb_ma901radio_suspend, + .resume = usb_ma901radio_resume, + .reset_resume = usb_ma901radio_resume, + .id_table = usb_ma901radio_device_table, +}; + +module_usb_driver(usb_ma901radio_driver); diff --git a/drivers/media/radio/radio-maxiradio.c b/drivers/media/radio/radio-maxiradio.c new file mode 100644 index 0000000..bd4d3a7 --- /dev/null +++ b/drivers/media/radio/radio-maxiradio.c @@ -0,0 +1,214 @@ +/* + * Guillemot Maxi Radio FM 2000 PCI radio card driver for Linux + * (C) 2001 Dimitromanolakis Apostolos <apdim@grecian.net> + * + * Based in the radio Maestro PCI driver. Actually it uses the same chip + * for radio but different pci controller. + * + * I didn't have any specs I reversed engineered the protocol from + * the windows driver (radio.dll). + * + * The card uses the TEA5757 chip that includes a search function but it + * is useless as I haven't found any way to read back the frequency. If + * anybody does please mail me. + * + * For the pdf file see: + * http://www.nxp.com/acrobat_download2/expired_datasheets/TEA5757_5759_3.pdf + * + * + * CHANGES: + * 0.75b + * - better pci interface thanks to Francois Romieu <romieu@cogenit.fr> + * + * 0.75 Sun Feb 4 22:51:27 EET 2001 + * - tiding up + * - removed support for multiple devices as it didn't work anyway + * + * BUGS: + * - card unmutes if you change frequency + * + * (c) 2006, 2007 by Mauro Carvalho Chehab <mchehab@infradead.org>: + * - Conversion to V4L2 API + * - Uses video_ioctl2 for parsing and to add debug support + */ + + +#include <linux/module.h> +#include <linux/init.h> +#include <linux/ioport.h> +#include <linux/delay.h> +#include <linux/mutex.h> +#include <linux/pci.h> +#include <linux/videodev2.h> +#include <linux/io.h> +#include <linux/slab.h> +#include <sound/tea575x-tuner.h> +#include <media/v4l2-device.h> +#include <media/v4l2-ioctl.h> +#include <media/v4l2-fh.h> +#include <media/v4l2-ctrls.h> +#include <media/v4l2-event.h> + +MODULE_AUTHOR("Dimitromanolakis Apostolos, apdim@grecian.net"); +MODULE_DESCRIPTION("Radio driver for the Guillemot Maxi Radio FM2000."); +MODULE_LICENSE("GPL"); +MODULE_VERSION("1.0.0"); + +static int radio_nr = -1; +module_param(radio_nr, int, 0644); +MODULE_PARM_DESC(radio_nr, "Radio device number"); + +/* TEA5757 pin mappings */ +static const int clk = 1, data = 2, wren = 4, mo_st = 8, power = 16; + +static atomic_t maxiradio_instance = ATOMIC_INIT(0); + +#define PCI_VENDOR_ID_GUILLEMOT 0x5046 +#define PCI_DEVICE_ID_GUILLEMOT_MAXIRADIO 0x1001 + +struct maxiradio +{ + struct snd_tea575x tea; + struct v4l2_device v4l2_dev; + struct pci_dev *pdev; + + u16 io; /* base of radio io */ +}; + +static inline struct maxiradio *to_maxiradio(struct v4l2_device *v4l2_dev) +{ + return container_of(v4l2_dev, struct maxiradio, v4l2_dev); +} + +static void maxiradio_tea575x_set_pins(struct snd_tea575x *tea, u8 pins) +{ + struct maxiradio *dev = tea->private_data; + u8 bits = 0; + + bits |= (pins & TEA575X_DATA) ? data : 0; + bits |= (pins & TEA575X_CLK) ? clk : 0; + bits |= (pins & TEA575X_WREN) ? wren : 0; + bits |= power; + + outb(bits, dev->io); +} + +/* Note: this card cannot read out the data of the shift registers, + only the mono/stereo pin works. */ +static u8 maxiradio_tea575x_get_pins(struct snd_tea575x *tea) +{ + struct maxiradio *dev = tea->private_data; + u8 bits = inb(dev->io); + + return ((bits & data) ? TEA575X_DATA : 0) | + ((bits & mo_st) ? TEA575X_MOST : 0); +} + +static void maxiradio_tea575x_set_direction(struct snd_tea575x *tea, bool output) +{ +} + +static struct snd_tea575x_ops maxiradio_tea_ops = { + .set_pins = maxiradio_tea575x_set_pins, + .get_pins = maxiradio_tea575x_get_pins, + .set_direction = maxiradio_tea575x_set_direction, +}; + +static int maxiradio_probe(struct pci_dev *pdev, + const struct pci_device_id *ent) +{ + struct maxiradio *dev; + struct v4l2_device *v4l2_dev; + int retval = -ENOMEM; + + dev = kzalloc(sizeof(*dev), GFP_KERNEL); + if (dev == NULL) { + dev_err(&pdev->dev, "not enough memory\n"); + return -ENOMEM; + } + + v4l2_dev = &dev->v4l2_dev; + v4l2_device_set_name(v4l2_dev, "maxiradio", &maxiradio_instance); + + retval = v4l2_device_register(&pdev->dev, v4l2_dev); + if (retval < 0) { + v4l2_err(v4l2_dev, "Could not register v4l2_device\n"); + goto errfr; + } + dev->tea.private_data = dev; + dev->tea.ops = &maxiradio_tea_ops; + /* The data pin cannot be read. This may be a hardware limitation, or + we just don't know how to read it. */ + dev->tea.cannot_read_data = true; + dev->tea.v4l2_dev = v4l2_dev; + dev->tea.radio_nr = radio_nr; + strlcpy(dev->tea.card, "Maxi Radio FM2000", sizeof(dev->tea.card)); + snprintf(dev->tea.bus_info, sizeof(dev->tea.bus_info), + "PCI:%s", pci_name(pdev)); + + retval = -ENODEV; + + if (!request_region(pci_resource_start(pdev, 0), + pci_resource_len(pdev, 0), v4l2_dev->name)) { + dev_err(&pdev->dev, "can't reserve I/O ports\n"); + goto err_hdl; + } + + if (pci_enable_device(pdev)) + goto err_out_free_region; + + dev->io = pci_resource_start(pdev, 0); + if (snd_tea575x_init(&dev->tea, THIS_MODULE)) { + printk(KERN_ERR "radio-maxiradio: Unable to detect TEA575x tuner\n"); + goto err_out_free_region; + } + return 0; + +err_out_free_region: + release_region(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0)); +err_hdl: + v4l2_device_unregister(v4l2_dev); +errfr: + kfree(dev); + return retval; +} + +static void maxiradio_remove(struct pci_dev *pdev) +{ + struct v4l2_device *v4l2_dev = dev_get_drvdata(&pdev->dev); + struct maxiradio *dev = to_maxiradio(v4l2_dev); + + snd_tea575x_exit(&dev->tea); + /* Turn off power */ + outb(0, dev->io); + v4l2_device_unregister(v4l2_dev); + release_region(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0)); +} + +static struct pci_device_id maxiradio_pci_tbl[] = { + { PCI_VENDOR_ID_GUILLEMOT, PCI_DEVICE_ID_GUILLEMOT_MAXIRADIO, + PCI_ANY_ID, PCI_ANY_ID, }, + { 0 } +}; + +MODULE_DEVICE_TABLE(pci, maxiradio_pci_tbl); + +static struct pci_driver maxiradio_driver = { + .name = "radio-maxiradio", + .id_table = maxiradio_pci_tbl, + .probe = maxiradio_probe, + .remove = maxiradio_remove, +}; + +static int __init maxiradio_init(void) +{ + return pci_register_driver(&maxiradio_driver); +} + +static void __exit maxiradio_exit(void) +{ + pci_unregister_driver(&maxiradio_driver); +} + +module_init(maxiradio_init); +module_exit(maxiradio_exit); diff --git a/drivers/media/radio/radio-miropcm20.c b/drivers/media/radio/radio-miropcm20.c new file mode 100644 index 0000000..a7e93d7 --- /dev/null +++ b/drivers/media/radio/radio-miropcm20.c @@ -0,0 +1,245 @@ +/* Miro PCM20 radio driver for Linux radio support + * (c) 1998 Ruurd Reitsma <R.A.Reitsma@wbmt.tudelft.nl> + * Thanks to Norberto Pellici for the ACI device interface specification + * The API part is based on the radiotrack driver by M. Kirkwood + * This driver relies on the aci mixer provided by the snd-miro + * ALSA driver. + * Look there for further info... + */ + +/* What ever you think about the ACI, version 0x07 is not very well! + * I can't get frequency, 'tuner status', 'tuner flags' or mute/mono + * conditions... Robert + */ + +#include <linux/module.h> +#include <linux/init.h> +#include <linux/videodev2.h> +#include <media/v4l2-device.h> +#include <media/v4l2-ioctl.h> +#include <media/v4l2-ctrls.h> +#include <media/v4l2-fh.h> +#include <media/v4l2-event.h> +#include <sound/aci.h> + +static int radio_nr = -1; +module_param(radio_nr, int, 0); +MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX). Default: -1 (autodetect)"); + +struct pcm20 { + struct v4l2_device v4l2_dev; + struct video_device vdev; + struct v4l2_ctrl_handler ctrl_handler; + unsigned long freq; + u32 audmode; + struct snd_miro_aci *aci; + struct mutex lock; +}; + +static struct pcm20 pcm20_card = { + .freq = 87 * 16000, + .audmode = V4L2_TUNER_MODE_STEREO, +}; + +static int pcm20_setfreq(struct pcm20 *dev, unsigned long freq) +{ + unsigned char freql; + unsigned char freqh; + struct snd_miro_aci *aci = dev->aci; + + freq /= 160; + if (!(aci->aci_version == 0x07 || aci->aci_version >= 0xb0)) + freq /= 10; /* I don't know exactly which version + * needs this hack */ + freql = freq & 0xff; + freqh = freq >> 8; + + return snd_aci_cmd(aci, ACI_WRITE_TUNE, freql, freqh); +} + +static const struct v4l2_file_operations pcm20_fops = { + .owner = THIS_MODULE, + .open = v4l2_fh_open, + .poll = v4l2_ctrl_poll, + .release = v4l2_fh_release, + .unlocked_ioctl = video_ioctl2, +}; + +static int vidioc_querycap(struct file *file, void *priv, + struct v4l2_capability *v) +{ + struct pcm20 *dev = video_drvdata(file); + + strlcpy(v->driver, "Miro PCM20", sizeof(v->driver)); + strlcpy(v->card, "Miro PCM20", sizeof(v->card)); + snprintf(v->bus_info, sizeof(v->bus_info), "ISA:%s", dev->v4l2_dev.name); + v->device_caps = V4L2_CAP_TUNER | V4L2_CAP_RADIO; + v->capabilities = v->device_caps | V4L2_CAP_DEVICE_CAPS; + return 0; +} + +static int vidioc_g_tuner(struct file *file, void *priv, + struct v4l2_tuner *v) +{ + struct pcm20 *dev = video_drvdata(file); + int res; + + if (v->index) + return -EINVAL; + strlcpy(v->name, "FM", sizeof(v->name)); + v->type = V4L2_TUNER_RADIO; + v->rangelow = 87*16000; + v->rangehigh = 108*16000; + res = snd_aci_cmd(dev->aci, ACI_READ_TUNERSTATION, -1, -1); + v->signal = (res & 0x80) ? 0 : 0xffff; + /* Note: stereo detection does not work if the audio is muted, + it will default to mono in that case. */ + res = snd_aci_cmd(dev->aci, ACI_READ_TUNERSTEREO, -1, -1); + v->rxsubchans = (res & 0x40) ? V4L2_TUNER_SUB_MONO : + V4L2_TUNER_SUB_STEREO; + v->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO; + v->audmode = dev->audmode; + return 0; +} + +static int vidioc_s_tuner(struct file *file, void *priv, + const struct v4l2_tuner *v) +{ + struct pcm20 *dev = video_drvdata(file); + + if (v->index) + return -EINVAL; + if (v->audmode > V4L2_TUNER_MODE_STEREO) + dev->audmode = V4L2_TUNER_MODE_STEREO; + else + dev->audmode = v->audmode; + snd_aci_cmd(dev->aci, ACI_SET_TUNERMONO, + dev->audmode == V4L2_TUNER_MODE_MONO, -1); + return 0; +} + +static int vidioc_g_frequency(struct file *file, void *priv, + struct v4l2_frequency *f) +{ + struct pcm20 *dev = video_drvdata(file); + + if (f->tuner != 0) + return -EINVAL; + + f->type = V4L2_TUNER_RADIO; + f->frequency = dev->freq; + return 0; +} + + +static int vidioc_s_frequency(struct file *file, void *priv, + const struct v4l2_frequency *f) +{ + struct pcm20 *dev = video_drvdata(file); + + if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO) + return -EINVAL; + + dev->freq = clamp_t(u32, f->frequency, 87 * 16000U, 108 * 16000U); + pcm20_setfreq(dev, dev->freq); + return 0; +} + +static int pcm20_s_ctrl(struct v4l2_ctrl *ctrl) +{ + struct pcm20 *dev = container_of(ctrl->handler, struct pcm20, ctrl_handler); + + switch (ctrl->id) { + case V4L2_CID_AUDIO_MUTE: + snd_aci_cmd(dev->aci, ACI_SET_TUNERMUTE, ctrl->val, -1); + return 0; + } + return -EINVAL; +} + +static const struct v4l2_ioctl_ops pcm20_ioctl_ops = { + .vidioc_querycap = vidioc_querycap, + .vidioc_g_tuner = vidioc_g_tuner, + .vidioc_s_tuner = vidioc_s_tuner, + .vidioc_g_frequency = vidioc_g_frequency, + .vidioc_s_frequency = vidioc_s_frequency, + .vidioc_log_status = v4l2_ctrl_log_status, + .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, + .vidioc_unsubscribe_event = v4l2_event_unsubscribe, +}; + +static const struct v4l2_ctrl_ops pcm20_ctrl_ops = { + .s_ctrl = pcm20_s_ctrl, +}; + +static int __init pcm20_init(void) +{ + struct pcm20 *dev = &pcm20_card; + struct v4l2_device *v4l2_dev = &dev->v4l2_dev; + struct v4l2_ctrl_handler *hdl; + int res; + + dev->aci = snd_aci_get_aci(); + if (dev->aci == NULL) { + v4l2_err(v4l2_dev, + "you must load the snd-miro driver first!\n"); + return -ENODEV; + } + strlcpy(v4l2_dev->name, "radio-miropcm20", sizeof(v4l2_dev->name)); + mutex_init(&dev->lock); + + res = v4l2_device_register(NULL, v4l2_dev); + if (res < 0) { + v4l2_err(v4l2_dev, "could not register v4l2_device\n"); + return -EINVAL; + } + + hdl = &dev->ctrl_handler; + v4l2_ctrl_handler_init(hdl, 1); + v4l2_ctrl_new_std(hdl, &pcm20_ctrl_ops, + V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1); + v4l2_dev->ctrl_handler = hdl; + if (hdl->error) { + res = hdl->error; + v4l2_err(v4l2_dev, "Could not register control\n"); + goto err_hdl; + } + strlcpy(dev->vdev.name, v4l2_dev->name, sizeof(dev->vdev.name)); + dev->vdev.v4l2_dev = v4l2_dev; + dev->vdev.fops = &pcm20_fops; + dev->vdev.ioctl_ops = &pcm20_ioctl_ops; + dev->vdev.release = video_device_release_empty; + dev->vdev.lock = &dev->lock; + set_bit(V4L2_FL_USE_FH_PRIO, &dev->vdev.flags); + video_set_drvdata(&dev->vdev, dev); + snd_aci_cmd(dev->aci, ACI_SET_TUNERMONO, + dev->audmode == V4L2_TUNER_MODE_MONO, -1); + pcm20_setfreq(dev, dev->freq); + + if (video_register_device(&dev->vdev, VFL_TYPE_RADIO, radio_nr) < 0) + goto err_hdl; + + v4l2_info(v4l2_dev, "Mirosound PCM20 Radio tuner\n"); + return 0; +err_hdl: + v4l2_ctrl_handler_free(hdl); + v4l2_device_unregister(v4l2_dev); + return -EINVAL; +} + +MODULE_AUTHOR("Ruurd Reitsma, Krzysztof Helt"); +MODULE_DESCRIPTION("A driver for the Miro PCM20 radio card."); +MODULE_LICENSE("GPL"); + +static void __exit pcm20_cleanup(void) +{ + struct pcm20 *dev = &pcm20_card; + + video_unregister_device(&dev->vdev); + snd_aci_cmd(dev->aci, ACI_SET_TUNERMUTE, 1, -1); + v4l2_ctrl_handler_free(&dev->ctrl_handler); + v4l2_device_unregister(&dev->v4l2_dev); +} + +module_init(pcm20_init); +module_exit(pcm20_cleanup); diff --git a/drivers/media/radio/radio-mr800.c b/drivers/media/radio/radio-mr800.c new file mode 100644 index 0000000..a360227 --- /dev/null +++ b/drivers/media/radio/radio-mr800.c @@ -0,0 +1,614 @@ +/* + * A driver for the AverMedia MR 800 USB FM radio. This device plugs + * into both the USB and an analog audio input, so this thing + * only deals with initialization and frequency setting, the + * audio data has to be handled by a sound driver. + * + * Copyright (c) 2008 Alexey Klimov <klimov.linux@gmail.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +/* + * Big thanks to authors and contributors of dsbr100.c and radio-si470x.c + * + * When work was looked pretty good, i discover this: + * http://av-usbradio.sourceforge.net/index.php + * http://sourceforge.net/projects/av-usbradio/ + * Latest release of theirs project was in 2005. + * Probably, this driver could be improved through using their + * achievements (specifications given). + * Also, Faidon Liambotis <paravoid@debian.org> wrote nice driver for this radio + * in 2007. He allowed to use his driver to improve current mr800 radio driver. + * http://kerneltrap.org/mailarchive/linux-usb-devel/2007/10/11/342492 + * + * Version 0.01: First working version. + * It's required to blacklist AverMedia USB Radio + * in usbhid/hid-quirks.c + * Version 0.10: A lot of cleanups and fixes: unpluging the device, + * few mutex locks were added, codinstyle issues, etc. + * Added stereo support. Thanks to + * Douglas Schilling Landgraf <dougsland@gmail.com> and + * David Ellingsworth <david@identd.dyndns.org> + * for discussion, help and support. + * Version 0.11: Converted to v4l2_device. + * + * Many things to do: + * - Correct power management of device (suspend & resume) + * - Add code for scanning and smooth tuning + * - Add code for sensitivity value + * - Correct mistakes + * - In Japan another FREQ_MIN and FREQ_MAX + */ + +/* kernel includes */ +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/slab.h> +#include <linux/input.h> +#include <linux/videodev2.h> +#include <media/v4l2-device.h> +#include <media/v4l2-ioctl.h> +#include <media/v4l2-ctrls.h> +#include <media/v4l2-event.h> +#include <linux/usb.h> +#include <linux/mutex.h> + +/* driver and module definitions */ +#define DRIVER_AUTHOR "Alexey Klimov <klimov.linux@gmail.com>" +#define DRIVER_DESC "AverMedia MR 800 USB FM radio driver" +#define DRIVER_VERSION "0.1.2" + +MODULE_AUTHOR(DRIVER_AUTHOR); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_LICENSE("GPL"); +MODULE_VERSION(DRIVER_VERSION); + +#define USB_AMRADIO_VENDOR 0x07ca +#define USB_AMRADIO_PRODUCT 0xb800 + +/* dev_warn macro with driver name */ +#define MR800_DRIVER_NAME "radio-mr800" +#define amradio_dev_warn(dev, fmt, arg...) \ + dev_warn(dev, MR800_DRIVER_NAME " - " fmt, ##arg) + +#define amradio_dev_err(dev, fmt, arg...) \ + dev_err(dev, MR800_DRIVER_NAME " - " fmt, ##arg) + +/* Probably USB_TIMEOUT should be modified in module parameter */ +#define BUFFER_LENGTH 8 +#define USB_TIMEOUT 500 + +/* Frequency limits in MHz -- these are European values. For Japanese +devices, that would be 76 and 91. */ +#define FREQ_MIN 87.5 +#define FREQ_MAX 108.0 +#define FREQ_MUL 16000 + +/* + * Commands that device should understand + * List isn't full and will be updated with implementation of new functions + */ +#define AMRADIO_SET_FREQ 0xa4 +#define AMRADIO_GET_READY_FLAG 0xa5 +#define AMRADIO_GET_SIGNAL 0xa7 +#define AMRADIO_GET_FREQ 0xa8 +#define AMRADIO_SET_SEARCH_UP 0xa9 +#define AMRADIO_SET_SEARCH_DOWN 0xaa +#define AMRADIO_SET_MUTE 0xab +#define AMRADIO_SET_RIGHT_MUTE 0xac +#define AMRADIO_SET_LEFT_MUTE 0xad +#define AMRADIO_SET_MONO 0xae +#define AMRADIO_SET_SEARCH_LVL 0xb0 +#define AMRADIO_STOP_SEARCH 0xb1 + +/* Comfortable defines for amradio_set_stereo */ +#define WANT_STEREO 0x00 +#define WANT_MONO 0x01 + +/* module parameter */ +static int radio_nr = -1; +module_param(radio_nr, int, 0); +MODULE_PARM_DESC(radio_nr, "Radio Nr"); + +/* Data for one (physical) device */ +struct amradio_device { + /* reference to USB and video device */ + struct usb_device *usbdev; + struct usb_interface *intf; + struct video_device vdev; + struct v4l2_device v4l2_dev; + struct v4l2_ctrl_handler hdl; + + u8 *buffer; + struct mutex lock; /* buffer locking */ + int curfreq; + int stereo; + int muted; +}; + +static inline struct amradio_device *to_amradio_dev(struct v4l2_device *v4l2_dev) +{ + return container_of(v4l2_dev, struct amradio_device, v4l2_dev); +} + +static int amradio_send_cmd(struct amradio_device *radio, u8 cmd, u8 arg, + u8 *extra, u8 extralen, bool reply) +{ + int retval; + int size; + + radio->buffer[0] = 0x00; + radio->buffer[1] = 0x55; + radio->buffer[2] = 0xaa; + radio->buffer[3] = extralen; + radio->buffer[4] = cmd; + radio->buffer[5] = arg; + radio->buffer[6] = 0x00; + radio->buffer[7] = extra || reply ? 8 : 0; + + retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2), + radio->buffer, BUFFER_LENGTH, &size, USB_TIMEOUT); + + if (retval < 0 || size != BUFFER_LENGTH) { + if (video_is_registered(&radio->vdev)) + amradio_dev_warn(&radio->vdev.dev, + "cmd %02x failed\n", cmd); + return retval ? retval : -EIO; + } + if (!extra && !reply) + return 0; + + if (extra) { + memcpy(radio->buffer, extra, extralen); + memset(radio->buffer + extralen, 0, 8 - extralen); + retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2), + radio->buffer, BUFFER_LENGTH, &size, USB_TIMEOUT); + } else { + memset(radio->buffer, 0, 8); + retval = usb_bulk_msg(radio->usbdev, usb_rcvbulkpipe(radio->usbdev, 0x81), + radio->buffer, BUFFER_LENGTH, &size, USB_TIMEOUT); + } + if (retval == 0 && size == BUFFER_LENGTH) + return 0; + if (video_is_registered(&radio->vdev) && cmd != AMRADIO_GET_READY_FLAG) + amradio_dev_warn(&radio->vdev.dev, "follow-up to cmd %02x failed\n", cmd); + return retval ? retval : -EIO; +} + +/* switch on/off the radio. Send 8 bytes to device */ +static int amradio_set_mute(struct amradio_device *radio, bool mute) +{ + int ret = amradio_send_cmd(radio, + AMRADIO_SET_MUTE, mute, NULL, 0, false); + + if (!ret) + radio->muted = mute; + return ret; +} + +/* set a frequency, freq is defined by v4l's TUNER_LOW, i.e. 1/16th kHz */ +static int amradio_set_freq(struct amradio_device *radio, int freq) +{ + unsigned short freq_send; + u8 buf[3]; + int retval; + + /* we need to be sure that frequency isn't out of range */ + freq = clamp_t(unsigned, freq, FREQ_MIN * FREQ_MUL, FREQ_MAX * FREQ_MUL); + freq_send = 0x10 + (freq >> 3) / 25; + + /* frequency is calculated from freq_send and placed in first 2 bytes */ + buf[0] = (freq_send >> 8) & 0xff; + buf[1] = freq_send & 0xff; + buf[2] = 0x01; + + retval = amradio_send_cmd(radio, AMRADIO_SET_FREQ, 0, buf, 3, false); + if (retval) + return retval; + radio->curfreq = freq; + msleep(40); + return 0; +} + +static int amradio_set_stereo(struct amradio_device *radio, bool stereo) +{ + int ret = amradio_send_cmd(radio, + AMRADIO_SET_MONO, !stereo, NULL, 0, false); + + if (!ret) + radio->stereo = stereo; + return ret; +} + +static int amradio_get_stat(struct amradio_device *radio, bool *is_stereo, u32 *signal) +{ + int ret = amradio_send_cmd(radio, + AMRADIO_GET_SIGNAL, 0, NULL, 0, true); + + if (ret) + return ret; + *is_stereo = radio->buffer[2] >> 7; + *signal = (radio->buffer[3] & 0xf0) << 8; + return 0; +} + +/* Handle unplugging the device. + * We call video_unregister_device in any case. + * The last function called in this procedure is + * usb_amradio_device_release. + */ +static void usb_amradio_disconnect(struct usb_interface *intf) +{ + struct amradio_device *radio = to_amradio_dev(usb_get_intfdata(intf)); + + mutex_lock(&radio->lock); + video_unregister_device(&radio->vdev); + amradio_set_mute(radio, true); + usb_set_intfdata(intf, NULL); + v4l2_device_disconnect(&radio->v4l2_dev); + mutex_unlock(&radio->lock); + v4l2_device_put(&radio->v4l2_dev); +} + +/* vidioc_querycap - query device capabilities */ +static int vidioc_querycap(struct file *file, void *priv, + struct v4l2_capability *v) +{ + struct amradio_device *radio = video_drvdata(file); + + strlcpy(v->driver, "radio-mr800", sizeof(v->driver)); + strlcpy(v->card, "AverMedia MR 800 USB FM Radio", sizeof(v->card)); + usb_make_path(radio->usbdev, v->bus_info, sizeof(v->bus_info)); + v->device_caps = V4L2_CAP_RADIO | V4L2_CAP_TUNER | + V4L2_CAP_HW_FREQ_SEEK; + v->capabilities = v->device_caps | V4L2_CAP_DEVICE_CAPS; + return 0; +} + +/* vidioc_g_tuner - get tuner attributes */ +static int vidioc_g_tuner(struct file *file, void *priv, + struct v4l2_tuner *v) +{ + struct amradio_device *radio = video_drvdata(file); + bool is_stereo = false; + int retval; + + if (v->index > 0) + return -EINVAL; + + v->signal = 0; + retval = amradio_get_stat(radio, &is_stereo, &v->signal); + if (retval) + return retval; + + strcpy(v->name, "FM"); + v->type = V4L2_TUNER_RADIO; + v->rangelow = FREQ_MIN * FREQ_MUL; + v->rangehigh = FREQ_MAX * FREQ_MUL; + v->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO | + V4L2_TUNER_CAP_HWSEEK_WRAP; + v->rxsubchans = is_stereo ? V4L2_TUNER_SUB_STEREO : V4L2_TUNER_SUB_MONO; + v->audmode = radio->stereo ? + V4L2_TUNER_MODE_STEREO : V4L2_TUNER_MODE_MONO; + return 0; +} + +/* vidioc_s_tuner - set tuner attributes */ +static int vidioc_s_tuner(struct file *file, void *priv, + const struct v4l2_tuner *v) +{ + struct amradio_device *radio = video_drvdata(file); + + if (v->index > 0) + return -EINVAL; + + /* mono/stereo selector */ + switch (v->audmode) { + case V4L2_TUNER_MODE_MONO: + return amradio_set_stereo(radio, WANT_MONO); + default: + return amradio_set_stereo(radio, WANT_STEREO); + } +} + +/* vidioc_s_frequency - set tuner radio frequency */ +static int vidioc_s_frequency(struct file *file, void *priv, + const struct v4l2_frequency *f) +{ + struct amradio_device *radio = video_drvdata(file); + + if (f->tuner != 0) + return -EINVAL; + return amradio_set_freq(radio, f->frequency); +} + +/* vidioc_g_frequency - get tuner radio frequency */ +static int vidioc_g_frequency(struct file *file, void *priv, + struct v4l2_frequency *f) +{ + struct amradio_device *radio = video_drvdata(file); + + if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO) + return -EINVAL; + f->type = V4L2_TUNER_RADIO; + f->frequency = radio->curfreq; + + return 0; +} + +static int vidioc_s_hw_freq_seek(struct file *file, void *priv, + const struct v4l2_hw_freq_seek *seek) +{ + static u8 buf[8] = { + 0x3d, 0x32, 0x0f, 0x08, 0x3d, 0x32, 0x0f, 0x08 + }; + struct amradio_device *radio = video_drvdata(file); + unsigned long timeout; + int retval; + + if (seek->tuner != 0 || !seek->wrap_around) + return -EINVAL; + + if (file->f_flags & O_NONBLOCK) + return -EWOULDBLOCK; + + retval = amradio_send_cmd(radio, + AMRADIO_SET_SEARCH_LVL, 0, buf, 8, false); + if (retval) + return retval; + amradio_set_freq(radio, radio->curfreq); + retval = amradio_send_cmd(radio, + seek->seek_upward ? AMRADIO_SET_SEARCH_UP : AMRADIO_SET_SEARCH_DOWN, + 0, NULL, 0, false); + if (retval) + return retval; + timeout = jiffies + msecs_to_jiffies(30000); + for (;;) { + if (time_after(jiffies, timeout)) { + retval = -ENODATA; + break; + } + if (schedule_timeout_interruptible(msecs_to_jiffies(10))) { + retval = -ERESTARTSYS; + break; + } + retval = amradio_send_cmd(radio, AMRADIO_GET_READY_FLAG, + 0, NULL, 0, true); + if (retval) + continue; + amradio_send_cmd(radio, AMRADIO_GET_FREQ, 0, NULL, 0, true); + if (radio->buffer[1] || radio->buffer[2]) { + /* To check: sometimes radio->curfreq is set to out of range value */ + radio->curfreq = (radio->buffer[1] << 8) | radio->buffer[2]; + radio->curfreq = (radio->curfreq - 0x10) * 200; + amradio_send_cmd(radio, AMRADIO_STOP_SEARCH, + 0, NULL, 0, false); + amradio_set_freq(radio, radio->curfreq); + retval = 0; + break; + } + } + amradio_send_cmd(radio, AMRADIO_STOP_SEARCH, 0, NULL, 0, false); + amradio_set_freq(radio, radio->curfreq); + return retval; +} + +static int usb_amradio_s_ctrl(struct v4l2_ctrl *ctrl) +{ + struct amradio_device *radio = + container_of(ctrl->handler, struct amradio_device, hdl); + + switch (ctrl->id) { + case V4L2_CID_AUDIO_MUTE: + return amradio_set_mute(radio, ctrl->val); + } + + return -EINVAL; +} + +static int usb_amradio_init(struct amradio_device *radio) +{ + int retval; + + retval = amradio_set_mute(radio, true); + if (retval) + goto out_err; + retval = amradio_set_stereo(radio, true); + if (retval) + goto out_err; + retval = amradio_set_freq(radio, radio->curfreq); + if (retval) + goto out_err; + return 0; + +out_err: + amradio_dev_err(&radio->vdev.dev, "initialization failed\n"); + return retval; +} + +/* Suspend device - stop device. Need to be checked and fixed */ +static int usb_amradio_suspend(struct usb_interface *intf, pm_message_t message) +{ + struct amradio_device *radio = to_amradio_dev(usb_get_intfdata(intf)); + + mutex_lock(&radio->lock); + if (!radio->muted) { + amradio_set_mute(radio, true); + radio->muted = false; + } + mutex_unlock(&radio->lock); + + dev_info(&intf->dev, "going into suspend..\n"); + return 0; +} + +/* Resume device - start device. Need to be checked and fixed */ +static int usb_amradio_resume(struct usb_interface *intf) +{ + struct amradio_device *radio = to_amradio_dev(usb_get_intfdata(intf)); + + mutex_lock(&radio->lock); + amradio_set_stereo(radio, radio->stereo); + amradio_set_freq(radio, radio->curfreq); + + if (!radio->muted) + amradio_set_mute(radio, false); + + mutex_unlock(&radio->lock); + + dev_info(&intf->dev, "coming out of suspend..\n"); + return 0; +} + +static const struct v4l2_ctrl_ops usb_amradio_ctrl_ops = { + .s_ctrl = usb_amradio_s_ctrl, +}; + +/* File system interface */ +static const struct v4l2_file_operations usb_amradio_fops = { + .owner = THIS_MODULE, + .open = v4l2_fh_open, + .release = v4l2_fh_release, + .poll = v4l2_ctrl_poll, + .unlocked_ioctl = video_ioctl2, +}; + +static const struct v4l2_ioctl_ops usb_amradio_ioctl_ops = { + .vidioc_querycap = vidioc_querycap, + .vidioc_g_tuner = vidioc_g_tuner, + .vidioc_s_tuner = vidioc_s_tuner, + .vidioc_g_frequency = vidioc_g_frequency, + .vidioc_s_frequency = vidioc_s_frequency, + .vidioc_s_hw_freq_seek = vidioc_s_hw_freq_seek, + .vidioc_log_status = v4l2_ctrl_log_status, + .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, + .vidioc_unsubscribe_event = v4l2_event_unsubscribe, +}; + +static void usb_amradio_release(struct v4l2_device *v4l2_dev) +{ + struct amradio_device *radio = to_amradio_dev(v4l2_dev); + + /* free rest memory */ + v4l2_ctrl_handler_free(&radio->hdl); + v4l2_device_unregister(&radio->v4l2_dev); + kfree(radio->buffer); + kfree(radio); +} + +/* check if the device is present and register with v4l and usb if it is */ +static int usb_amradio_probe(struct usb_interface *intf, + const struct usb_device_id *id) +{ + struct amradio_device *radio; + int retval = 0; + + radio = kzalloc(sizeof(struct amradio_device), GFP_KERNEL); + + if (!radio) { + dev_err(&intf->dev, "kmalloc for amradio_device failed\n"); + retval = -ENOMEM; + goto err; + } + + radio->buffer = kmalloc(BUFFER_LENGTH, GFP_KERNEL); + + if (!radio->buffer) { + dev_err(&intf->dev, "kmalloc for radio->buffer failed\n"); + retval = -ENOMEM; + goto err_nobuf; + } + + retval = v4l2_device_register(&intf->dev, &radio->v4l2_dev); + if (retval < 0) { + dev_err(&intf->dev, "couldn't register v4l2_device\n"); + goto err_v4l2; + } + + v4l2_ctrl_handler_init(&radio->hdl, 1); + v4l2_ctrl_new_std(&radio->hdl, &usb_amradio_ctrl_ops, + V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1); + if (radio->hdl.error) { + retval = radio->hdl.error; + dev_err(&intf->dev, "couldn't register control\n"); + goto err_ctrl; + } + mutex_init(&radio->lock); + + radio->v4l2_dev.ctrl_handler = &radio->hdl; + radio->v4l2_dev.release = usb_amradio_release; + strlcpy(radio->vdev.name, radio->v4l2_dev.name, + sizeof(radio->vdev.name)); + radio->vdev.v4l2_dev = &radio->v4l2_dev; + radio->vdev.fops = &usb_amradio_fops; + radio->vdev.ioctl_ops = &usb_amradio_ioctl_ops; + radio->vdev.release = video_device_release_empty; + radio->vdev.lock = &radio->lock; + set_bit(V4L2_FL_USE_FH_PRIO, &radio->vdev.flags); + + radio->usbdev = interface_to_usbdev(intf); + radio->intf = intf; + usb_set_intfdata(intf, &radio->v4l2_dev); + radio->curfreq = 95.16 * FREQ_MUL; + + video_set_drvdata(&radio->vdev, radio); + retval = usb_amradio_init(radio); + if (retval) + goto err_vdev; + + retval = video_register_device(&radio->vdev, VFL_TYPE_RADIO, + radio_nr); + if (retval < 0) { + dev_err(&intf->dev, "could not register video device\n"); + goto err_vdev; + } + + return 0; + +err_vdev: + v4l2_ctrl_handler_free(&radio->hdl); +err_ctrl: + v4l2_device_unregister(&radio->v4l2_dev); +err_v4l2: + kfree(radio->buffer); +err_nobuf: + kfree(radio); +err: + return retval; +} + +/* USB Device ID List */ +static struct usb_device_id usb_amradio_device_table[] = { + { USB_DEVICE_AND_INTERFACE_INFO(USB_AMRADIO_VENDOR, USB_AMRADIO_PRODUCT, + USB_CLASS_HID, 0, 0) }, + { } /* Terminating entry */ +}; + +MODULE_DEVICE_TABLE(usb, usb_amradio_device_table); + +/* USB subsystem interface */ +static struct usb_driver usb_amradio_driver = { + .name = MR800_DRIVER_NAME, + .probe = usb_amradio_probe, + .disconnect = usb_amradio_disconnect, + .suspend = usb_amradio_suspend, + .resume = usb_amradio_resume, + .reset_resume = usb_amradio_resume, + .id_table = usb_amradio_device_table, +}; + +module_usb_driver(usb_amradio_driver); diff --git a/drivers/media/radio/radio-rtrack2.c b/drivers/media/radio/radio-rtrack2.c new file mode 100644 index 0000000..6f41a9a --- /dev/null +++ b/drivers/media/radio/radio-rtrack2.c @@ -0,0 +1,141 @@ +/* + * RadioTrack II driver + * Copyright 1998 Ben Pfaff + * + * Based on RadioTrack I/RadioReveal (C) 1997 M. Kirkwood + * Converted to new API by Alan Cox <alan@lxorguk.ukuu.org.uk> + * Various bugfixes and enhancements by Russell Kroll <rkroll@exploits.org> + * + * Converted to the radio-isa framework by Hans Verkuil <hans.verkuil@cisco.com> + * Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org> + * + * Fully tested with actual hardware and the v4l2-compliance tool. + */ + +#include <linux/module.h> /* Modules */ +#include <linux/init.h> /* Initdata */ +#include <linux/ioport.h> /* request_region */ +#include <linux/delay.h> /* udelay */ +#include <linux/videodev2.h> /* kernel radio structs */ +#include <linux/mutex.h> +#include <linux/io.h> /* outb, outb_p */ +#include <linux/slab.h> +#include <media/v4l2-device.h> +#include <media/v4l2-ioctl.h> +#include "radio-isa.h" + +MODULE_AUTHOR("Ben Pfaff"); +MODULE_DESCRIPTION("A driver for the RadioTrack II radio card."); +MODULE_LICENSE("GPL"); +MODULE_VERSION("0.1.99"); + +#ifndef CPTCFG_RADIO_RTRACK2_PORT +#define CPTCFG_RADIO_RTRACK2_PORT -1 +#endif + +#define RTRACK2_MAX 2 + +static int io[RTRACK2_MAX] = { [0] = CPTCFG_RADIO_RTRACK2_PORT, + [1 ... (RTRACK2_MAX - 1)] = -1 }; +static int radio_nr[RTRACK2_MAX] = { [0 ... (RTRACK2_MAX - 1)] = -1 }; + +module_param_array(io, int, NULL, 0444); +MODULE_PARM_DESC(io, "I/O addresses of the RadioTrack card (0x20f or 0x30f)"); +module_param_array(radio_nr, int, NULL, 0444); +MODULE_PARM_DESC(radio_nr, "Radio device numbers"); + +static struct radio_isa_card *rtrack2_alloc(void) +{ + return kzalloc(sizeof(struct radio_isa_card), GFP_KERNEL); +} + +static void zero(struct radio_isa_card *isa) +{ + outb_p(1, isa->io); + outb_p(3, isa->io); + outb_p(1, isa->io); +} + +static void one(struct radio_isa_card *isa) +{ + outb_p(5, isa->io); + outb_p(7, isa->io); + outb_p(5, isa->io); +} + +static int rtrack2_s_frequency(struct radio_isa_card *isa, u32 freq) +{ + int i; + + freq = freq / 200 + 856; + + outb_p(0xc8, isa->io); + outb_p(0xc9, isa->io); + outb_p(0xc9, isa->io); + + for (i = 0; i < 10; i++) + zero(isa); + + for (i = 14; i >= 0; i--) + if (freq & (1 << i)) + one(isa); + else + zero(isa); + + outb_p(0xc8, isa->io); + outb_p(v4l2_ctrl_g_ctrl(isa->mute), isa->io); + return 0; +} + +static u32 rtrack2_g_signal(struct radio_isa_card *isa) +{ + /* bit set = no signal present */ + return (inb(isa->io) & 2) ? 0 : 0xffff; +} + +static int rtrack2_s_mute_volume(struct radio_isa_card *isa, bool mute, int vol) +{ + outb(mute, isa->io); + return 0; +} + +static const struct radio_isa_ops rtrack2_ops = { + .alloc = rtrack2_alloc, + .s_mute_volume = rtrack2_s_mute_volume, + .s_frequency = rtrack2_s_frequency, + .g_signal = rtrack2_g_signal, +}; + +static const int rtrack2_ioports[] = { 0x20f, 0x30f }; + +static struct radio_isa_driver rtrack2_driver = { + .driver = { + .match = radio_isa_match, + .probe = radio_isa_probe, + .remove = radio_isa_remove, + .driver = { + .name = "radio-rtrack2", + }, + }, + .io_params = io, + .radio_nr_params = radio_nr, + .io_ports = rtrack2_ioports, + .num_of_io_ports = ARRAY_SIZE(rtrack2_ioports), + .region_size = 4, + .card = "AIMSlab RadioTrack II", + .ops = &rtrack2_ops, + .has_stereo = true, +}; + +static int __init rtrack2_init(void) +{ + return isa_register_driver(&rtrack2_driver.driver, RTRACK2_MAX); +} + +static void __exit rtrack2_exit(void) +{ + isa_unregister_driver(&rtrack2_driver.driver); +} + +module_init(rtrack2_init); +module_exit(rtrack2_exit); diff --git a/drivers/media/radio/radio-sf16fmi.c b/drivers/media/radio/radio-sf16fmi.c new file mode 100644 index 0000000..adfcc61 --- /dev/null +++ b/drivers/media/radio/radio-sf16fmi.c @@ -0,0 +1,402 @@ +/* SF16-FMI, SF16-FMP and SF16-FMD radio driver for Linux radio support + * heavily based on rtrack driver... + * (c) 1997 M. Kirkwood + * (c) 1998 Petr Vandrovec, vandrove@vc.cvut.cz + * + * Fitted to new interface by Alan Cox <alan@lxorguk.ukuu.org.uk> + * Made working and cleaned up functions <mikael.hedin@irf.se> + * Support for ISAPnP by Ladislav Michl <ladis@psi.cz> + * + * Notes on the hardware + * + * Frequency control is done digitally -- ie out(port,encodefreq(95.8)); + * No volume control - only mute/unmute - you have to use line volume + * control on SB-part of SF16-FMI/SF16-FMP/SF16-FMD + * + * Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org> + */ + +#include <linux/kernel.h> /* __setup */ +#include <linux/module.h> /* Modules */ +#include <linux/init.h> /* Initdata */ +#include <linux/ioport.h> /* request_region */ +#include <linux/delay.h> /* udelay */ +#include <linux/isapnp.h> +#include <linux/mutex.h> +#include <linux/videodev2.h> /* kernel radio structs */ +#include <linux/io.h> /* outb, outb_p */ +#include <media/v4l2-device.h> +#include <media/v4l2-ioctl.h> +#include "lm7000.h" + +MODULE_AUTHOR("Petr Vandrovec, vandrove@vc.cvut.cz and M. Kirkwood"); +MODULE_DESCRIPTION("A driver for the SF16-FMI, SF16-FMP and SF16-FMD radio."); +MODULE_LICENSE("GPL"); +MODULE_VERSION("0.0.3"); + +static int io = -1; +static int radio_nr = -1; + +module_param(io, int, 0); +MODULE_PARM_DESC(io, "I/O address of the SF16-FMI/SF16-FMP/SF16-FMD card (0x284 or 0x384)"); +module_param(radio_nr, int, 0); + +struct fmi +{ + struct v4l2_device v4l2_dev; + struct video_device vdev; + int io; + bool mute; + unsigned long curfreq; /* freq in kHz */ + struct mutex lock; +}; + +static struct fmi fmi_card; +static struct pnp_dev *dev; +bool pnp_attached; + +#define RSF16_MINFREQ (87 * 16000) +#define RSF16_MAXFREQ (108 * 16000) + +#define FMI_BIT_TUN_CE (1 << 0) +#define FMI_BIT_TUN_CLK (1 << 1) +#define FMI_BIT_TUN_DATA (1 << 2) +#define FMI_BIT_VOL_SW (1 << 3) +#define FMI_BIT_TUN_STRQ (1 << 4) + +static void fmi_set_pins(void *handle, u8 pins) +{ + struct fmi *fmi = handle; + u8 bits = FMI_BIT_TUN_STRQ; + + if (!fmi->mute) + bits |= FMI_BIT_VOL_SW; + + if (pins & LM7000_DATA) + bits |= FMI_BIT_TUN_DATA; + if (pins & LM7000_CLK) + bits |= FMI_BIT_TUN_CLK; + if (pins & LM7000_CE) + bits |= FMI_BIT_TUN_CE; + + mutex_lock(&fmi->lock); + outb_p(bits, fmi->io); + mutex_unlock(&fmi->lock); +} + +static inline void fmi_mute(struct fmi *fmi) +{ + mutex_lock(&fmi->lock); + outb(0x00, fmi->io); + mutex_unlock(&fmi->lock); +} + +static inline void fmi_unmute(struct fmi *fmi) +{ + mutex_lock(&fmi->lock); + outb(0x08, fmi->io); + mutex_unlock(&fmi->lock); +} + +static inline int fmi_getsigstr(struct fmi *fmi) +{ + int val; + int res; + + mutex_lock(&fmi->lock); + val = fmi->mute ? 0x00 : 0x08; /* mute/unmute */ + outb(val, fmi->io); + outb(val | 0x10, fmi->io); + msleep(143); /* was schedule_timeout(HZ/7) */ + res = (int)inb(fmi->io + 1); + outb(val, fmi->io); + + mutex_unlock(&fmi->lock); + return (res & 2) ? 0 : 0xFFFF; +} + +static int vidioc_querycap(struct file *file, void *priv, + struct v4l2_capability *v) +{ + strlcpy(v->driver, "radio-sf16fmi", sizeof(v->driver)); + strlcpy(v->card, "SF16-FMI/FMP/FMD radio", sizeof(v->card)); + strlcpy(v->bus_info, "ISA", sizeof(v->bus_info)); + v->capabilities = V4L2_CAP_TUNER | V4L2_CAP_RADIO; + return 0; +} + +static int vidioc_g_tuner(struct file *file, void *priv, + struct v4l2_tuner *v) +{ + struct fmi *fmi = video_drvdata(file); + + if (v->index > 0) + return -EINVAL; + + strlcpy(v->name, "FM", sizeof(v->name)); + v->type = V4L2_TUNER_RADIO; + v->rangelow = RSF16_MINFREQ; + v->rangehigh = RSF16_MAXFREQ; + v->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO; + v->capability = V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LOW; + v->audmode = V4L2_TUNER_MODE_STEREO; + v->signal = fmi_getsigstr(fmi); + return 0; +} + +static int vidioc_s_tuner(struct file *file, void *priv, + const struct v4l2_tuner *v) +{ + return v->index ? -EINVAL : 0; +} + +static int vidioc_s_frequency(struct file *file, void *priv, + const struct v4l2_frequency *f) +{ + struct fmi *fmi = video_drvdata(file); + + if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO) + return -EINVAL; + if (f->frequency < RSF16_MINFREQ || + f->frequency > RSF16_MAXFREQ) + return -EINVAL; + /* rounding in steps of 800 to match the freq + that will be used */ + lm7000_set_freq((f->frequency / 800) * 800, fmi, fmi_set_pins); + return 0; +} + +static int vidioc_g_frequency(struct file *file, void *priv, + struct v4l2_frequency *f) +{ + struct fmi *fmi = video_drvdata(file); + + if (f->tuner != 0) + return -EINVAL; + f->type = V4L2_TUNER_RADIO; + f->frequency = fmi->curfreq; + return 0; +} + +static int vidioc_queryctrl(struct file *file, void *priv, + struct v4l2_queryctrl *qc) +{ + switch (qc->id) { + case V4L2_CID_AUDIO_MUTE: + return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1); + } + return -EINVAL; +} + +static int vidioc_g_ctrl(struct file *file, void *priv, + struct v4l2_control *ctrl) +{ + struct fmi *fmi = video_drvdata(file); + + switch (ctrl->id) { + case V4L2_CID_AUDIO_MUTE: + ctrl->value = fmi->mute; + return 0; + } + return -EINVAL; +} + +static int vidioc_s_ctrl(struct file *file, void *priv, + struct v4l2_control *ctrl) +{ + struct fmi *fmi = video_drvdata(file); + + switch (ctrl->id) { + case V4L2_CID_AUDIO_MUTE: + if (ctrl->value) + fmi_mute(fmi); + else + fmi_unmute(fmi); + fmi->mute = ctrl->value; + return 0; + } + return -EINVAL; +} + +static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i) +{ + *i = 0; + return 0; +} + +static int vidioc_s_input(struct file *filp, void *priv, unsigned int i) +{ + return i ? -EINVAL : 0; +} + +static int vidioc_g_audio(struct file *file, void *priv, + struct v4l2_audio *a) +{ + a->index = 0; + strlcpy(a->name, "Radio", sizeof(a->name)); + a->capability = V4L2_AUDCAP_STEREO; + return 0; +} + +static int vidioc_s_audio(struct file *file, void *priv, + const struct v4l2_audio *a) +{ + return a->index ? -EINVAL : 0; +} + +static const struct v4l2_file_operations fmi_fops = { + .owner = THIS_MODULE, + .unlocked_ioctl = video_ioctl2, +}; + +static const struct v4l2_ioctl_ops fmi_ioctl_ops = { + .vidioc_querycap = vidioc_querycap, + .vidioc_g_tuner = vidioc_g_tuner, + .vidioc_s_tuner = vidioc_s_tuner, + .vidioc_g_audio = vidioc_g_audio, + .vidioc_s_audio = vidioc_s_audio, + .vidioc_g_input = vidioc_g_input, + .vidioc_s_input = vidioc_s_input, + .vidioc_g_frequency = vidioc_g_frequency, + .vidioc_s_frequency = vidioc_s_frequency, + .vidioc_queryctrl = vidioc_queryctrl, + .vidioc_g_ctrl = vidioc_g_ctrl, + .vidioc_s_ctrl = vidioc_s_ctrl, +}; + +/* ladis: this is my card. does any other types exist? */ +static struct isapnp_device_id id_table[] = { + /* SF16-FMI */ + { ISAPNP_ANY_ID, ISAPNP_ANY_ID, + ISAPNP_VENDOR('M','F','R'), ISAPNP_FUNCTION(0xad10), 0}, + /* SF16-FMD */ + { ISAPNP_ANY_ID, ISAPNP_ANY_ID, + ISAPNP_VENDOR('M','F','R'), ISAPNP_FUNCTION(0xad12), 0}, + { ISAPNP_CARD_END, }, +}; + +MODULE_DEVICE_TABLE(isapnp, id_table); + +static int __init isapnp_fmi_probe(void) +{ + int i = 0; + + while (id_table[i].card_vendor != 0 && dev == NULL) { + dev = pnp_find_dev(NULL, id_table[i].vendor, + id_table[i].function, NULL); + i++; + } + + if (!dev) + return -ENODEV; + if (pnp_device_attach(dev) < 0) + return -EAGAIN; + if (pnp_activate_dev(dev) < 0) { + printk(KERN_ERR "radio-sf16fmi: PnP configure failed (out of resources?)\n"); + pnp_device_detach(dev); + return -ENOMEM; + } + if (!pnp_port_valid(dev, 0)) { + pnp_device_detach(dev); + return -ENODEV; + } + + i = pnp_port_start(dev, 0); + printk(KERN_INFO "radio-sf16fmi: PnP reports card at %#x\n", i); + + return i; +} + +static int __init fmi_init(void) +{ + struct fmi *fmi = &fmi_card; + struct v4l2_device *v4l2_dev = &fmi->v4l2_dev; + int res, i; + int probe_ports[] = { 0, 0x284, 0x384 }; + + if (io < 0) { + for (i = 0; i < ARRAY_SIZE(probe_ports); i++) { + io = probe_ports[i]; + if (io == 0) { + io = isapnp_fmi_probe(); + if (io < 0) + continue; + pnp_attached = 1; + } + if (!request_region(io, 2, "radio-sf16fmi")) { + if (pnp_attached) + pnp_device_detach(dev); + io = -1; + continue; + } + if (pnp_attached || + ((inb(io) & 0xf9) == 0xf9 && (inb(io) & 0x4) == 0)) + break; + release_region(io, 2); + io = -1; + } + } else { + if (!request_region(io, 2, "radio-sf16fmi")) { + printk(KERN_ERR "radio-sf16fmi: port %#x already in use\n", io); + return -EBUSY; + } + if (inb(io) == 0xff) { + printk(KERN_ERR "radio-sf16fmi: card not present at %#x\n", io); + release_region(io, 2); + return -ENODEV; + } + } + if (io < 0) { + printk(KERN_ERR "radio-sf16fmi: no cards found\n"); + return -ENODEV; + } + + strlcpy(v4l2_dev->name, "sf16fmi", sizeof(v4l2_dev->name)); + fmi->io = io; + + res = v4l2_device_register(NULL, v4l2_dev); + if (res < 0) { + release_region(fmi->io, 2); + if (pnp_attached) + pnp_device_detach(dev); + v4l2_err(v4l2_dev, "Could not register v4l2_device\n"); + return res; + } + + strlcpy(fmi->vdev.name, v4l2_dev->name, sizeof(fmi->vdev.name)); + fmi->vdev.v4l2_dev = v4l2_dev; + fmi->vdev.fops = &fmi_fops; + fmi->vdev.ioctl_ops = &fmi_ioctl_ops; + fmi->vdev.release = video_device_release_empty; + video_set_drvdata(&fmi->vdev, fmi); + + mutex_init(&fmi->lock); + + /* mute card - prevents noisy bootups */ + fmi_mute(fmi); + + if (video_register_device(&fmi->vdev, VFL_TYPE_RADIO, radio_nr) < 0) { + v4l2_device_unregister(v4l2_dev); + release_region(fmi->io, 2); + if (pnp_attached) + pnp_device_detach(dev); + return -EINVAL; + } + + v4l2_info(v4l2_dev, "card driver at 0x%x\n", fmi->io); + return 0; +} + +static void __exit fmi_exit(void) +{ + struct fmi *fmi = &fmi_card; + + video_unregister_device(&fmi->vdev); + v4l2_device_unregister(&fmi->v4l2_dev); + release_region(fmi->io, 2); + if (dev && pnp_attached) + pnp_device_detach(dev); +} + +module_init(fmi_init); +module_exit(fmi_exit); diff --git a/drivers/media/radio/radio-sf16fmr2.c b/drivers/media/radio/radio-sf16fmr2.c new file mode 100644 index 0000000..9c09904 --- /dev/null +++ b/drivers/media/radio/radio-sf16fmr2.c @@ -0,0 +1,347 @@ +/* SF16-FMR2 and SF16-FMD2 radio driver for Linux + * Copyright (c) 2011 Ondrej Zary + * + * Original driver was (c) 2000-2002 Ziglio Frediano, freddy77@angelfire.com + * but almost nothing remained here after conversion to generic TEA575x + * implementation + */ + +#include <linux/delay.h> +#include <linux/module.h> /* Modules */ +#include <linux/init.h> /* Initdata */ +#include <linux/slab.h> +#include <linux/ioport.h> /* request_region */ +#include <linux/io.h> /* outb, outb_p */ +#include <linux/isa.h> +#include <linux/pnp.h> +#include <sound/tea575x-tuner.h> + +MODULE_AUTHOR("Ondrej Zary"); +MODULE_DESCRIPTION("MediaForte SF16-FMR2 and SF16-FMD2 FM radio card driver"); +MODULE_LICENSE("GPL"); + +/* these cards can only use two different ports (0x384 and 0x284) */ +#define FMR2_MAX 2 + +static int radio_nr[FMR2_MAX] = { [0 ... (FMR2_MAX - 1)] = -1 }; +module_param_array(radio_nr, int, NULL, 0444); +MODULE_PARM_DESC(radio_nr, "Radio device numbers"); + +struct fmr2 { + int io; + struct v4l2_device v4l2_dev; + struct snd_tea575x tea; + struct v4l2_ctrl *volume; + struct v4l2_ctrl *balance; + bool is_fmd2; +}; + +static int num_fmr2_cards; +static struct fmr2 *fmr2_cards[FMR2_MAX]; +static bool isa_registered; +static bool pnp_registered; + +/* the port is hardwired on SF16-FMR2 */ +#define FMR2_PORT 0x384 + +/* TEA575x tuner pins */ +#define STR_DATA (1 << 0) +#define STR_CLK (1 << 1) +#define STR_WREN (1 << 2) +#define STR_MOST (1 << 3) +/* PT2254A/TC9154A volume control pins */ +#define PT_ST (1 << 4) +#define PT_CK (1 << 5) +#define PT_DATA (1 << 6) +/* volume control presence pin */ +#define FMR2_HASVOL (1 << 7) + +static void fmr2_tea575x_set_pins(struct snd_tea575x *tea, u8 pins) +{ + struct fmr2 *fmr2 = tea->private_data; + u8 bits = 0; + + bits |= (pins & TEA575X_DATA) ? STR_DATA : 0; + bits |= (pins & TEA575X_CLK) ? STR_CLK : 0; + /* WRITE_ENABLE is inverted, DATA must be high during read */ + bits |= (pins & TEA575X_WREN) ? 0 : STR_WREN | STR_DATA; + + outb(bits, fmr2->io); +} + +static u8 fmr2_tea575x_get_pins(struct snd_tea575x *tea) +{ + struct fmr2 *fmr2 = tea->private_data; + u8 bits = inb(fmr2->io); + + return (bits & STR_DATA) ? TEA575X_DATA : 0 | + (bits & STR_MOST) ? TEA575X_MOST : 0; +} + +static void fmr2_tea575x_set_direction(struct snd_tea575x *tea, bool output) +{ +} + +static struct snd_tea575x_ops fmr2_tea_ops = { + .set_pins = fmr2_tea575x_set_pins, + .get_pins = fmr2_tea575x_get_pins, + .set_direction = fmr2_tea575x_set_direction, +}; + +/* TC9154A/PT2254A volume control */ + +/* 18-bit shift register bit definitions */ +#define TC9154A_ATT_MAJ_0DB (1 << 0) +#define TC9154A_ATT_MAJ_10DB (1 << 1) +#define TC9154A_ATT_MAJ_20DB (1 << 2) +#define TC9154A_ATT_MAJ_30DB (1 << 3) +#define TC9154A_ATT_MAJ_40DB (1 << 4) +#define TC9154A_ATT_MAJ_50DB (1 << 5) +#define TC9154A_ATT_MAJ_60DB (1 << 6) + +#define TC9154A_ATT_MIN_0DB (1 << 7) +#define TC9154A_ATT_MIN_2DB (1 << 8) +#define TC9154A_ATT_MIN_4DB (1 << 9) +#define TC9154A_ATT_MIN_6DB (1 << 10) +#define TC9154A_ATT_MIN_8DB (1 << 11) +/* bit 12 is ignored */ +#define TC9154A_CHANNEL_LEFT (1 << 13) +#define TC9154A_CHANNEL_RIGHT (1 << 14) +/* bits 15, 16, 17 must be 0 */ + +#define TC9154A_ATT_MAJ(x) (1 << x) +#define TC9154A_ATT_MIN(x) (1 << (7 + x)) + +static void tc9154a_set_pins(struct fmr2 *fmr2, u8 pins) +{ + if (!fmr2->tea.mute) + pins |= STR_WREN; + + outb(pins, fmr2->io); +} + +static void tc9154a_set_attenuation(struct fmr2 *fmr2, int att, u32 channel) +{ + int i; + u32 reg; + u8 bit; + + reg = TC9154A_ATT_MAJ(att / 10) | TC9154A_ATT_MIN((att % 10) / 2); + reg |= channel; + /* write 18-bit shift register, LSB first */ + for (i = 0; i < 18; i++) { + bit = reg & (1 << i) ? PT_DATA : 0; + tc9154a_set_pins(fmr2, bit); + udelay(5); + tc9154a_set_pins(fmr2, bit | PT_CK); + udelay(5); + tc9154a_set_pins(fmr2, bit); + } + + /* latch register data */ + udelay(5); + tc9154a_set_pins(fmr2, PT_ST); + udelay(5); + tc9154a_set_pins(fmr2, 0); +} + +static int fmr2_s_ctrl(struct v4l2_ctrl *ctrl) +{ + struct snd_tea575x *tea = container_of(ctrl->handler, struct snd_tea575x, ctrl_handler); + struct fmr2 *fmr2 = tea->private_data; + int volume, balance, left, right; + + switch (ctrl->id) { + case V4L2_CID_AUDIO_VOLUME: + volume = ctrl->val; + balance = fmr2->balance->cur.val; + break; + case V4L2_CID_AUDIO_BALANCE: + balance = ctrl->val; + volume = fmr2->volume->cur.val; + break; + default: + return -EINVAL; + } + + left = right = volume; + if (balance < 0) + right = max(0, right + balance); + if (balance > 0) + left = max(0, left - balance); + + tc9154a_set_attenuation(fmr2, abs(left - 68), TC9154A_CHANNEL_LEFT); + tc9154a_set_attenuation(fmr2, abs(right - 68), TC9154A_CHANNEL_RIGHT); + + return 0; +} + +static const struct v4l2_ctrl_ops fmr2_ctrl_ops = { + .s_ctrl = fmr2_s_ctrl, +}; + +static int fmr2_tea_ext_init(struct snd_tea575x *tea) +{ + struct fmr2 *fmr2 = tea->private_data; + + /* FMR2 can have volume control, FMD2 can't (uses SB16 mixer) */ + if (!fmr2->is_fmd2 && inb(fmr2->io) & FMR2_HASVOL) { + fmr2->volume = v4l2_ctrl_new_std(&tea->ctrl_handler, &fmr2_ctrl_ops, V4L2_CID_AUDIO_VOLUME, 0, 68, 2, 56); + fmr2->balance = v4l2_ctrl_new_std(&tea->ctrl_handler, &fmr2_ctrl_ops, V4L2_CID_AUDIO_BALANCE, -68, 68, 2, 0); + if (tea->ctrl_handler.error) { + printk(KERN_ERR "radio-sf16fmr2: can't initialize controls\n"); + return tea->ctrl_handler.error; + } + } + + return 0; +} + +static struct pnp_device_id fmr2_pnp_ids[] = { + { .id = "MFRad13" }, /* tuner subdevice of SF16-FMD2 */ + { .id = "" } +}; +MODULE_DEVICE_TABLE(pnp, fmr2_pnp_ids); + +static int fmr2_probe(struct fmr2 *fmr2, struct device *pdev, int io) +{ + int err, i; + char *card_name = fmr2->is_fmd2 ? "SF16-FMD2" : "SF16-FMR2"; + + /* avoid errors if a card was already registered at given port */ + for (i = 0; i < num_fmr2_cards; i++) + if (io == fmr2_cards[i]->io) + return -EBUSY; + + strlcpy(fmr2->v4l2_dev.name, "radio-sf16fmr2", + sizeof(fmr2->v4l2_dev.name)), + fmr2->io = io; + + if (!request_region(fmr2->io, 2, fmr2->v4l2_dev.name)) { + printk(KERN_ERR "radio-sf16fmr2: I/O port 0x%x already in use\n", fmr2->io); + return -EBUSY; + } + + dev_set_drvdata(pdev, fmr2); + err = v4l2_device_register(pdev, &fmr2->v4l2_dev); + if (err < 0) { + v4l2_err(&fmr2->v4l2_dev, "Could not register v4l2_device\n"); + release_region(fmr2->io, 2); + return err; + } + fmr2->tea.v4l2_dev = &fmr2->v4l2_dev; + fmr2->tea.private_data = fmr2; + fmr2->tea.radio_nr = radio_nr[num_fmr2_cards]; + fmr2->tea.ops = &fmr2_tea_ops; + fmr2->tea.ext_init = fmr2_tea_ext_init; + strlcpy(fmr2->tea.card, card_name, sizeof(fmr2->tea.card)); + snprintf(fmr2->tea.bus_info, sizeof(fmr2->tea.bus_info), "%s:%s", + fmr2->is_fmd2 ? "PnP" : "ISA", dev_name(pdev)); + + if (snd_tea575x_init(&fmr2->tea, THIS_MODULE)) { + printk(KERN_ERR "radio-sf16fmr2: Unable to detect TEA575x tuner\n"); + release_region(fmr2->io, 2); + return -ENODEV; + } + + printk(KERN_INFO "radio-sf16fmr2: %s radio card at 0x%x.\n", + card_name, fmr2->io); + return 0; +} + +static int fmr2_isa_match(struct device *pdev, unsigned int ndev) +{ + struct fmr2 *fmr2 = kzalloc(sizeof(*fmr2), GFP_KERNEL); + if (!fmr2) + return 0; + + if (fmr2_probe(fmr2, pdev, FMR2_PORT)) { + kfree(fmr2); + return 0; + } + dev_set_drvdata(pdev, fmr2); + fmr2_cards[num_fmr2_cards++] = fmr2; + + return 1; +} + +static int fmr2_pnp_probe(struct pnp_dev *pdev, const struct pnp_device_id *id) +{ + int ret; + struct fmr2 *fmr2 = kzalloc(sizeof(*fmr2), GFP_KERNEL); + if (!fmr2) + return -ENOMEM; + + fmr2->is_fmd2 = true; + ret = fmr2_probe(fmr2, &pdev->dev, pnp_port_start(pdev, 0)); + if (ret) { + kfree(fmr2); + return ret; + } + pnp_set_drvdata(pdev, fmr2); + fmr2_cards[num_fmr2_cards++] = fmr2; + + return 0; +} + +static void fmr2_remove(struct fmr2 *fmr2) +{ + snd_tea575x_exit(&fmr2->tea); + release_region(fmr2->io, 2); + v4l2_device_unregister(&fmr2->v4l2_dev); + kfree(fmr2); +} + +static int fmr2_isa_remove(struct device *pdev, unsigned int ndev) +{ + fmr2_remove(dev_get_drvdata(pdev)); + dev_set_drvdata(pdev, NULL); + + return 0; +} + +static void fmr2_pnp_remove(struct pnp_dev *pdev) +{ + fmr2_remove(pnp_get_drvdata(pdev)); + pnp_set_drvdata(pdev, NULL); +} + +struct isa_driver fmr2_isa_driver = { + .match = fmr2_isa_match, + .remove = fmr2_isa_remove, + .driver = { + .name = "radio-sf16fmr2", + }, +}; + +struct pnp_driver fmr2_pnp_driver = { + .name = "radio-sf16fmr2", + .id_table = fmr2_pnp_ids, + .probe = fmr2_pnp_probe, + .remove = fmr2_pnp_remove, +}; + +static int __init fmr2_init(void) +{ + int ret; + + ret = pnp_register_driver(&fmr2_pnp_driver); + if (!ret) + pnp_registered = true; + ret = isa_register_driver(&fmr2_isa_driver, 1); + if (!ret) + isa_registered = true; + + return (pnp_registered || isa_registered) ? 0 : ret; +} + +static void __exit fmr2_exit(void) +{ + if (pnp_registered) + pnp_unregister_driver(&fmr2_pnp_driver); + if (isa_registered) + isa_unregister_driver(&fmr2_isa_driver); +} + +module_init(fmr2_init); +module_exit(fmr2_exit); diff --git a/drivers/media/radio/radio-shark.c b/drivers/media/radio/radio-shark.c new file mode 100644 index 0000000..c9ee32e --- /dev/null +++ b/drivers/media/radio/radio-shark.c @@ -0,0 +1,423 @@ +/* + * Linux V4L2 radio driver for the Griffin radioSHARK USB radio receiver + * + * Note the radioSHARK offers the audio through a regular USB audio device, + * this driver only handles the tuning. + * + * The info necessary to drive the shark was taken from the small userspace + * shark.c program by Michael Rolig, which he kindly placed in the Public + * Domain. + * + * Copyright (c) 2012 Hans de Goede <hdegoede@redhat.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +*/ + +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/leds.h> +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/usb.h> +#include <linux/workqueue.h> +#include <media/v4l2-device.h> +#include <sound/tea575x-tuner.h> + +#if defined(CONFIG_LEDS_CLASS) || \ + (defined(CONFIG_LEDS_CLASS_MODULE) && defined(CPTCFG_RADIO_SHARK_MODULE)) +#define SHARK_USE_LEDS 1 +#endif + +/* + * Version Information + */ +MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>"); +MODULE_DESCRIPTION("Griffin radioSHARK, USB radio receiver driver"); +MODULE_LICENSE("GPL"); + +#define SHARK_IN_EP 0x83 +#define SHARK_OUT_EP 0x05 + +#define TEA575X_BIT_MONO (1<<22) /* 0 = stereo, 1 = mono */ +#define TEA575X_BIT_BAND_MASK (3<<20) +#define TEA575X_BIT_BAND_FM (0<<20) + +#define TB_LEN 6 +#define DRV_NAME "radioshark" + +#define v4l2_dev_to_shark(d) container_of(d, struct shark_device, v4l2_dev) + +/* Note BLUE_IS_PULSE comes after NO_LEDS as it is a status bit, not a LED */ +enum { BLUE_LED, BLUE_PULSE_LED, RED_LED, NO_LEDS, BLUE_IS_PULSE }; + +struct shark_device { + struct usb_device *usbdev; + struct v4l2_device v4l2_dev; + struct snd_tea575x tea; + +#ifdef SHARK_USE_LEDS + struct work_struct led_work; + struct led_classdev leds[NO_LEDS]; + char led_names[NO_LEDS][32]; + atomic_t brightness[NO_LEDS]; + unsigned long brightness_new; +#endif + + u8 *transfer_buffer; + u32 last_val; +}; + +static atomic_t shark_instance = ATOMIC_INIT(0); + +static void shark_write_val(struct snd_tea575x *tea, u32 val) +{ + struct shark_device *shark = tea->private_data; + int i, res, actual_len; + + /* Avoid unnecessary (slow) USB transfers */ + if (shark->last_val == val) + return; + + memset(shark->transfer_buffer, 0, TB_LEN); + shark->transfer_buffer[0] = 0xc0; /* Write shift register command */ + for (i = 0; i < 4; i++) + shark->transfer_buffer[i] |= (val >> (24 - i * 8)) & 0xff; + + res = usb_interrupt_msg(shark->usbdev, + usb_sndintpipe(shark->usbdev, SHARK_OUT_EP), + shark->transfer_buffer, TB_LEN, + &actual_len, 1000); + if (res >= 0) + shark->last_val = val; + else + v4l2_err(&shark->v4l2_dev, "set-freq error: %d\n", res); +} + +static u32 shark_read_val(struct snd_tea575x *tea) +{ + struct shark_device *shark = tea->private_data; + int i, res, actual_len; + u32 val = 0; + + memset(shark->transfer_buffer, 0, TB_LEN); + shark->transfer_buffer[0] = 0x80; + res = usb_interrupt_msg(shark->usbdev, + usb_sndintpipe(shark->usbdev, SHARK_OUT_EP), + shark->transfer_buffer, TB_LEN, + &actual_len, 1000); + if (res < 0) { + v4l2_err(&shark->v4l2_dev, "request-status error: %d\n", res); + return shark->last_val; + } + + res = usb_interrupt_msg(shark->usbdev, + usb_rcvintpipe(shark->usbdev, SHARK_IN_EP), + shark->transfer_buffer, TB_LEN, + &actual_len, 1000); + if (res < 0) { + v4l2_err(&shark->v4l2_dev, "get-status error: %d\n", res); + return shark->last_val; + } + + for (i = 0; i < 4; i++) + val |= shark->transfer_buffer[i] << (24 - i * 8); + + shark->last_val = val; + + /* + * The shark does not allow actually reading the stereo / mono pin :( + * So assume that when we're tuned to an FM station and mono has not + * been requested, that we're receiving stereo. + */ + if (((val & TEA575X_BIT_BAND_MASK) == TEA575X_BIT_BAND_FM) && + !(val & TEA575X_BIT_MONO)) + shark->tea.stereo = true; + else + shark->tea.stereo = false; + + return val; +} + +static struct snd_tea575x_ops shark_tea_ops = { + .write_val = shark_write_val, + .read_val = shark_read_val, +}; + +#ifdef SHARK_USE_LEDS +static void shark_led_work(struct work_struct *work) +{ + struct shark_device *shark = + container_of(work, struct shark_device, led_work); + int i, res, brightness, actual_len; + + for (i = 0; i < 3; i++) { + if (!test_and_clear_bit(i, &shark->brightness_new)) + continue; + + brightness = atomic_read(&shark->brightness[i]); + memset(shark->transfer_buffer, 0, TB_LEN); + if (i != RED_LED) { + shark->transfer_buffer[0] = 0xA0 + i; + shark->transfer_buffer[1] = brightness; + } else + shark->transfer_buffer[0] = brightness ? 0xA9 : 0xA8; + res = usb_interrupt_msg(shark->usbdev, + usb_sndintpipe(shark->usbdev, 0x05), + shark->transfer_buffer, TB_LEN, + &actual_len, 1000); + if (res < 0) + v4l2_err(&shark->v4l2_dev, "set LED %s error: %d\n", + shark->led_names[i], res); + } +} + +static void shark_led_set_blue(struct led_classdev *led_cdev, + enum led_brightness value) +{ + struct shark_device *shark = + container_of(led_cdev, struct shark_device, leds[BLUE_LED]); + + atomic_set(&shark->brightness[BLUE_LED], value); + set_bit(BLUE_LED, &shark->brightness_new); + clear_bit(BLUE_IS_PULSE, &shark->brightness_new); + schedule_work(&shark->led_work); +} + +static void shark_led_set_blue_pulse(struct led_classdev *led_cdev, + enum led_brightness value) +{ + struct shark_device *shark = container_of(led_cdev, + struct shark_device, leds[BLUE_PULSE_LED]); + + atomic_set(&shark->brightness[BLUE_PULSE_LED], 256 - value); + set_bit(BLUE_PULSE_LED, &shark->brightness_new); + set_bit(BLUE_IS_PULSE, &shark->brightness_new); + schedule_work(&shark->led_work); +} + +static void shark_led_set_red(struct led_classdev *led_cdev, + enum led_brightness value) +{ + struct shark_device *shark = + container_of(led_cdev, struct shark_device, leds[RED_LED]); + + atomic_set(&shark->brightness[RED_LED], value); + set_bit(RED_LED, &shark->brightness_new); + schedule_work(&shark->led_work); +} + +static const struct led_classdev shark_led_templates[NO_LEDS] = { + [BLUE_LED] = { + .name = "%s:blue:", + .brightness = LED_OFF, + .max_brightness = 127, + .brightness_set = shark_led_set_blue, + }, + [BLUE_PULSE_LED] = { + .name = "%s:blue-pulse:", + .brightness = LED_OFF, + .max_brightness = 255, + .brightness_set = shark_led_set_blue_pulse, + }, + [RED_LED] = { + .name = "%s:red:", + .brightness = LED_OFF, + .max_brightness = 1, + .brightness_set = shark_led_set_red, + }, +}; + +static int shark_register_leds(struct shark_device *shark, struct device *dev) +{ + int i, retval; + + atomic_set(&shark->brightness[BLUE_LED], 127); + INIT_WORK(&shark->led_work, shark_led_work); + for (i = 0; i < NO_LEDS; i++) { + shark->leds[i] = shark_led_templates[i]; + snprintf(shark->led_names[i], sizeof(shark->led_names[0]), + shark->leds[i].name, shark->v4l2_dev.name); + shark->leds[i].name = shark->led_names[i]; + retval = led_classdev_register(dev, &shark->leds[i]); + if (retval) { + v4l2_err(&shark->v4l2_dev, + "couldn't register led: %s\n", + shark->led_names[i]); + return retval; + } + } + return 0; +} + +static void shark_unregister_leds(struct shark_device *shark) +{ + int i; + + for (i = 0; i < NO_LEDS; i++) + led_classdev_unregister(&shark->leds[i]); + + cancel_work_sync(&shark->led_work); +} + +static void shark_resume_leds(struct shark_device *shark) +{ + if (test_bit(BLUE_IS_PULSE, &shark->brightness_new)) + set_bit(BLUE_PULSE_LED, &shark->brightness_new); + else + set_bit(BLUE_LED, &shark->brightness_new); + set_bit(RED_LED, &shark->brightness_new); + schedule_work(&shark->led_work); +} +#else +static int shark_register_leds(struct shark_device *shark, struct device *dev) +{ + v4l2_warn(&shark->v4l2_dev, + "CONFIG_LEDS_CLASS not enabled, LED support disabled\n"); + return 0; +} +static inline void shark_unregister_leds(struct shark_device *shark) { } +static inline void shark_resume_leds(struct shark_device *shark) { } +#endif + +static void usb_shark_disconnect(struct usb_interface *intf) +{ + struct v4l2_device *v4l2_dev = usb_get_intfdata(intf); + struct shark_device *shark = v4l2_dev_to_shark(v4l2_dev); + + mutex_lock(&shark->tea.mutex); + v4l2_device_disconnect(&shark->v4l2_dev); + snd_tea575x_exit(&shark->tea); + mutex_unlock(&shark->tea.mutex); + + shark_unregister_leds(shark); + + v4l2_device_put(&shark->v4l2_dev); +} + +static void usb_shark_release(struct v4l2_device *v4l2_dev) +{ + struct shark_device *shark = v4l2_dev_to_shark(v4l2_dev); + + v4l2_device_unregister(&shark->v4l2_dev); + kfree(shark->transfer_buffer); + kfree(shark); +} + +static int usb_shark_probe(struct usb_interface *intf, + const struct usb_device_id *id) +{ + struct shark_device *shark; + int retval = -ENOMEM; + + shark = kzalloc(sizeof(struct shark_device), GFP_KERNEL); + if (!shark) + return retval; + + shark->transfer_buffer = kmalloc(TB_LEN, GFP_KERNEL); + if (!shark->transfer_buffer) + goto err_alloc_buffer; + + v4l2_device_set_name(&shark->v4l2_dev, DRV_NAME, &shark_instance); + + retval = shark_register_leds(shark, &intf->dev); + if (retval) + goto err_reg_leds; + + shark->v4l2_dev.release = usb_shark_release; + retval = v4l2_device_register(&intf->dev, &shark->v4l2_dev); + if (retval) { + v4l2_err(&shark->v4l2_dev, "couldn't register v4l2_device\n"); + goto err_reg_dev; + } + + shark->usbdev = interface_to_usbdev(intf); + shark->tea.v4l2_dev = &shark->v4l2_dev; + shark->tea.private_data = shark; + shark->tea.radio_nr = -1; + shark->tea.ops = &shark_tea_ops; + shark->tea.cannot_mute = true; + shark->tea.has_am = true; + strlcpy(shark->tea.card, "Griffin radioSHARK", + sizeof(shark->tea.card)); + usb_make_path(shark->usbdev, shark->tea.bus_info, + sizeof(shark->tea.bus_info)); + + retval = snd_tea575x_init(&shark->tea, THIS_MODULE); + if (retval) { + v4l2_err(&shark->v4l2_dev, "couldn't init tea5757\n"); + goto err_init_tea; + } + + return 0; + +err_init_tea: + v4l2_device_unregister(&shark->v4l2_dev); +err_reg_dev: + shark_unregister_leds(shark); +err_reg_leds: + kfree(shark->transfer_buffer); +err_alloc_buffer: + kfree(shark); + + return retval; +} + +#ifdef CONFIG_PM +static int usb_shark_suspend(struct usb_interface *intf, pm_message_t message) +{ + return 0; +} + +static int usb_shark_resume(struct usb_interface *intf) +{ + struct v4l2_device *v4l2_dev = usb_get_intfdata(intf); + struct shark_device *shark = v4l2_dev_to_shark(v4l2_dev); + + mutex_lock(&shark->tea.mutex); + snd_tea575x_set_freq(&shark->tea); + mutex_unlock(&shark->tea.mutex); + + shark_resume_leds(shark); + + return 0; +} +#endif + +/* Specify the bcdDevice value, as the radioSHARK and radioSHARK2 share ids */ +static struct usb_device_id usb_shark_device_table[] = { + { .match_flags = USB_DEVICE_ID_MATCH_DEVICE_AND_VERSION | + USB_DEVICE_ID_MATCH_INT_CLASS, + .idVendor = 0x077d, + .idProduct = 0x627a, + .bcdDevice_lo = 0x0001, + .bcdDevice_hi = 0x0001, + .bInterfaceClass = 3, + }, + { } +}; +MODULE_DEVICE_TABLE(usb, usb_shark_device_table); + +static struct usb_driver usb_shark_driver = { + .name = DRV_NAME, + .probe = usb_shark_probe, + .disconnect = usb_shark_disconnect, + .id_table = usb_shark_device_table, +#ifdef CONFIG_PM + .suspend = usb_shark_suspend, + .resume = usb_shark_resume, + .reset_resume = usb_shark_resume, +#endif +}; +module_usb_driver(usb_shark_driver); diff --git a/drivers/media/radio/radio-shark2.c b/drivers/media/radio/radio-shark2.c new file mode 100644 index 0000000..c3305a8 --- /dev/null +++ b/drivers/media/radio/radio-shark2.c @@ -0,0 +1,389 @@ +/* + * Linux V4L2 radio driver for the Griffin radioSHARK2 USB radio receiver + * + * Note the radioSHARK2 offers the audio through a regular USB audio device, + * this driver only handles the tuning. + * + * The info necessary to drive the shark2 was taken from the small userspace + * shark2.c program by Hisaaki Shibata, which he kindly placed in the Public + * Domain. + * + * Copyright (c) 2012 Hans de Goede <hdegoede@redhat.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/leds.h> +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/usb.h> +#include <linux/workqueue.h> +#include <media/v4l2-device.h> +#include "radio-tea5777.h" + +#if defined(CONFIG_LEDS_CLASS) || \ + (defined(CONFIG_LEDS_CLASS_MODULE) && defined(CPTCFG_RADIO_SHARK2_MODULE)) +#define SHARK_USE_LEDS 1 +#endif + +MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>"); +MODULE_DESCRIPTION("Griffin radioSHARK2, USB radio receiver driver"); +MODULE_LICENSE("GPL"); + +static int debug; +module_param(debug, int, 0); +MODULE_PARM_DESC(debug, "Debug level (0-1)"); + +#define SHARK_IN_EP 0x83 +#define SHARK_OUT_EP 0x05 + +#define TB_LEN 7 +#define DRV_NAME "radioshark2" + +#define v4l2_dev_to_shark(d) container_of(d, struct shark_device, v4l2_dev) + +enum { BLUE_LED, RED_LED, NO_LEDS }; + +struct shark_device { + struct usb_device *usbdev; + struct v4l2_device v4l2_dev; + struct radio_tea5777 tea; + +#ifdef SHARK_USE_LEDS + struct work_struct led_work; + struct led_classdev leds[NO_LEDS]; + char led_names[NO_LEDS][32]; + atomic_t brightness[NO_LEDS]; + unsigned long brightness_new; +#endif + + u8 *transfer_buffer; +}; + +static atomic_t shark_instance = ATOMIC_INIT(0); + +static int shark_write_reg(struct radio_tea5777 *tea, u64 reg) +{ + struct shark_device *shark = tea->private_data; + int i, res, actual_len; + + memset(shark->transfer_buffer, 0, TB_LEN); + shark->transfer_buffer[0] = 0x81; /* Write register command */ + for (i = 0; i < 6; i++) + shark->transfer_buffer[i + 1] = (reg >> (40 - i * 8)) & 0xff; + + v4l2_dbg(1, debug, tea->v4l2_dev, "shark2-write: %*ph\n", + 7, shark->transfer_buffer); + + res = usb_interrupt_msg(shark->usbdev, + usb_sndintpipe(shark->usbdev, SHARK_OUT_EP), + shark->transfer_buffer, TB_LEN, + &actual_len, 1000); + if (res < 0) { + v4l2_err(tea->v4l2_dev, "write error: %d\n", res); + return res; + } + + return 0; +} + +static int shark_read_reg(struct radio_tea5777 *tea, u32 *reg_ret) +{ + struct shark_device *shark = tea->private_data; + int i, res, actual_len; + u32 reg = 0; + + memset(shark->transfer_buffer, 0, TB_LEN); + shark->transfer_buffer[0] = 0x82; + res = usb_interrupt_msg(shark->usbdev, + usb_sndintpipe(shark->usbdev, SHARK_OUT_EP), + shark->transfer_buffer, TB_LEN, + &actual_len, 1000); + if (res < 0) { + v4l2_err(tea->v4l2_dev, "request-read error: %d\n", res); + return res; + } + + res = usb_interrupt_msg(shark->usbdev, + usb_rcvintpipe(shark->usbdev, SHARK_IN_EP), + shark->transfer_buffer, TB_LEN, + &actual_len, 1000); + if (res < 0) { + v4l2_err(tea->v4l2_dev, "read error: %d\n", res); + return res; + } + + for (i = 0; i < 3; i++) + reg |= shark->transfer_buffer[i] << (16 - i * 8); + + v4l2_dbg(1, debug, tea->v4l2_dev, "shark2-read: %*ph\n", + 3, shark->transfer_buffer); + + *reg_ret = reg; + return 0; +} + +static struct radio_tea5777_ops shark_tea_ops = { + .write_reg = shark_write_reg, + .read_reg = shark_read_reg, +}; + +#ifdef SHARK_USE_LEDS +static void shark_led_work(struct work_struct *work) +{ + struct shark_device *shark = + container_of(work, struct shark_device, led_work); + int i, res, brightness, actual_len; + + for (i = 0; i < 2; i++) { + if (!test_and_clear_bit(i, &shark->brightness_new)) + continue; + + brightness = atomic_read(&shark->brightness[i]); + memset(shark->transfer_buffer, 0, TB_LEN); + shark->transfer_buffer[0] = 0x83 + i; + shark->transfer_buffer[1] = brightness; + res = usb_interrupt_msg(shark->usbdev, + usb_sndintpipe(shark->usbdev, + SHARK_OUT_EP), + shark->transfer_buffer, TB_LEN, + &actual_len, 1000); + if (res < 0) + v4l2_err(&shark->v4l2_dev, "set LED %s error: %d\n", + shark->led_names[i], res); + } +} + +static void shark_led_set_blue(struct led_classdev *led_cdev, + enum led_brightness value) +{ + struct shark_device *shark = + container_of(led_cdev, struct shark_device, leds[BLUE_LED]); + + atomic_set(&shark->brightness[BLUE_LED], value); + set_bit(BLUE_LED, &shark->brightness_new); + schedule_work(&shark->led_work); +} + +static void shark_led_set_red(struct led_classdev *led_cdev, + enum led_brightness value) +{ + struct shark_device *shark = + container_of(led_cdev, struct shark_device, leds[RED_LED]); + + atomic_set(&shark->brightness[RED_LED], value); + set_bit(RED_LED, &shark->brightness_new); + schedule_work(&shark->led_work); +} + +static const struct led_classdev shark_led_templates[NO_LEDS] = { + [BLUE_LED] = { + .name = "%s:blue:", + .brightness = LED_OFF, + .max_brightness = 127, + .brightness_set = shark_led_set_blue, + }, + [RED_LED] = { + .name = "%s:red:", + .brightness = LED_OFF, + .max_brightness = 1, + .brightness_set = shark_led_set_red, + }, +}; + +static int shark_register_leds(struct shark_device *shark, struct device *dev) +{ + int i, retval; + + atomic_set(&shark->brightness[BLUE_LED], 127); + INIT_WORK(&shark->led_work, shark_led_work); + for (i = 0; i < NO_LEDS; i++) { + shark->leds[i] = shark_led_templates[i]; + snprintf(shark->led_names[i], sizeof(shark->led_names[0]), + shark->leds[i].name, shark->v4l2_dev.name); + shark->leds[i].name = shark->led_names[i]; + retval = led_classdev_register(dev, &shark->leds[i]); + if (retval) { + v4l2_err(&shark->v4l2_dev, + "couldn't register led: %s\n", + shark->led_names[i]); + return retval; + } + } + return 0; +} + +static void shark_unregister_leds(struct shark_device *shark) +{ + int i; + + for (i = 0; i < NO_LEDS; i++) + led_classdev_unregister(&shark->leds[i]); + + cancel_work_sync(&shark->led_work); +} + +static void shark_resume_leds(struct shark_device *shark) +{ + int i; + + for (i = 0; i < NO_LEDS; i++) + set_bit(i, &shark->brightness_new); + + schedule_work(&shark->led_work); +} +#else +static int shark_register_leds(struct shark_device *shark, struct device *dev) +{ + v4l2_warn(&shark->v4l2_dev, + "CONFIG_LEDS_CLASS not enabled, LED support disabled\n"); + return 0; +} +static inline void shark_unregister_leds(struct shark_device *shark) { } +static inline void shark_resume_leds(struct shark_device *shark) { } +#endif + +static void usb_shark_disconnect(struct usb_interface *intf) +{ + struct v4l2_device *v4l2_dev = usb_get_intfdata(intf); + struct shark_device *shark = v4l2_dev_to_shark(v4l2_dev); + + mutex_lock(&shark->tea.mutex); + v4l2_device_disconnect(&shark->v4l2_dev); + radio_tea5777_exit(&shark->tea); + mutex_unlock(&shark->tea.mutex); + + shark_unregister_leds(shark); + + v4l2_device_put(&shark->v4l2_dev); +} + +static void usb_shark_release(struct v4l2_device *v4l2_dev) +{ + struct shark_device *shark = v4l2_dev_to_shark(v4l2_dev); + + v4l2_device_unregister(&shark->v4l2_dev); + kfree(shark->transfer_buffer); + kfree(shark); +} + +static int usb_shark_probe(struct usb_interface *intf, + const struct usb_device_id *id) +{ + struct shark_device *shark; + int retval = -ENOMEM; + + shark = kzalloc(sizeof(struct shark_device), GFP_KERNEL); + if (!shark) + return retval; + + shark->transfer_buffer = kmalloc(TB_LEN, GFP_KERNEL); + if (!shark->transfer_buffer) + goto err_alloc_buffer; + + v4l2_device_set_name(&shark->v4l2_dev, DRV_NAME, &shark_instance); + + retval = shark_register_leds(shark, &intf->dev); + if (retval) + goto err_reg_leds; + + shark->v4l2_dev.release = usb_shark_release; + retval = v4l2_device_register(&intf->dev, &shark->v4l2_dev); + if (retval) { + v4l2_err(&shark->v4l2_dev, "couldn't register v4l2_device\n"); + goto err_reg_dev; + } + + shark->usbdev = interface_to_usbdev(intf); + shark->tea.v4l2_dev = &shark->v4l2_dev; + shark->tea.private_data = shark; + shark->tea.ops = &shark_tea_ops; + shark->tea.has_am = true; + shark->tea.write_before_read = true; + strlcpy(shark->tea.card, "Griffin radioSHARK2", + sizeof(shark->tea.card)); + usb_make_path(shark->usbdev, shark->tea.bus_info, + sizeof(shark->tea.bus_info)); + + retval = radio_tea5777_init(&shark->tea, THIS_MODULE); + if (retval) { + v4l2_err(&shark->v4l2_dev, "couldn't init tea5777\n"); + goto err_init_tea; + } + + return 0; + +err_init_tea: + v4l2_device_unregister(&shark->v4l2_dev); +err_reg_dev: + shark_unregister_leds(shark); +err_reg_leds: + kfree(shark->transfer_buffer); +err_alloc_buffer: + kfree(shark); + + return retval; +} + +#ifdef CONFIG_PM +static int usb_shark_suspend(struct usb_interface *intf, pm_message_t message) +{ + return 0; +} + +static int usb_shark_resume(struct usb_interface *intf) +{ + struct v4l2_device *v4l2_dev = usb_get_intfdata(intf); + struct shark_device *shark = v4l2_dev_to_shark(v4l2_dev); + int ret; + + mutex_lock(&shark->tea.mutex); + ret = radio_tea5777_set_freq(&shark->tea); + mutex_unlock(&shark->tea.mutex); + + shark_resume_leds(shark); + + return ret; +} +#endif + +/* Specify the bcdDevice value, as the radioSHARK and radioSHARK2 share ids */ +static struct usb_device_id usb_shark_device_table[] = { + { .match_flags = USB_DEVICE_ID_MATCH_DEVICE_AND_VERSION | + USB_DEVICE_ID_MATCH_INT_CLASS, + .idVendor = 0x077d, + .idProduct = 0x627a, + .bcdDevice_lo = 0x0010, + .bcdDevice_hi = 0x0010, + .bInterfaceClass = 3, + }, + { } +}; +MODULE_DEVICE_TABLE(usb, usb_shark_device_table); + +static struct usb_driver usb_shark_driver = { + .name = DRV_NAME, + .probe = usb_shark_probe, + .disconnect = usb_shark_disconnect, + .id_table = usb_shark_device_table, +#ifdef CONFIG_PM + .suspend = usb_shark_suspend, + .resume = usb_shark_resume, + .reset_resume = usb_shark_resume, +#endif +}; +module_usb_driver(usb_shark_driver); diff --git a/drivers/media/radio/radio-si4713.c b/drivers/media/radio/radio-si4713.c new file mode 100644 index 0000000..ba4cfc9 --- /dev/null +++ b/drivers/media/radio/radio-si4713.c @@ -0,0 +1,246 @@ +/* + * drivers/media/radio/radio-si4713.c + * + * Platform Driver for Silicon Labs Si4713 FM Radio Transmitter: + * + * Copyright (c) 2008 Instituto Nokia de Tecnologia - INdT + * Contact: Eduardo Valentin <eduardo.valentin@nokia.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/platform_device.h> +#include <linux/i2c.h> +#include <linux/videodev2.h> +#include <linux/slab.h> +#include <media/v4l2-device.h> +#include <media/v4l2-common.h> +#include <media/v4l2-ioctl.h> +#include <media/v4l2-fh.h> +#include <media/v4l2-ctrls.h> +#include <media/v4l2-event.h> +#include <media/radio-si4713.h> + +/* module parameters */ +static int radio_nr = -1; /* radio device minor (-1 ==> auto assign) */ +module_param(radio_nr, int, 0); +MODULE_PARM_DESC(radio_nr, + "Minor number for radio device (-1 ==> auto assign)"); + +MODULE_LICENSE("GPL v2"); +MODULE_AUTHOR("Eduardo Valentin <eduardo.valentin@nokia.com>"); +MODULE_DESCRIPTION("Platform driver for Si4713 FM Radio Transmitter"); +MODULE_VERSION("0.0.1"); +MODULE_ALIAS("platform:radio-si4713"); + +/* Driver state struct */ +struct radio_si4713_device { + struct v4l2_device v4l2_dev; + struct video_device radio_dev; + struct mutex lock; +}; + +/* radio_si4713_fops - file operations interface */ +static const struct v4l2_file_operations radio_si4713_fops = { + .owner = THIS_MODULE, + .open = v4l2_fh_open, + .release = v4l2_fh_release, + .poll = v4l2_ctrl_poll, + /* Note: locking is done at the subdev level in the i2c driver. */ + .unlocked_ioctl = video_ioctl2, +}; + +/* Video4Linux Interface */ + +/* radio_si4713_querycap - query device capabilities */ +static int radio_si4713_querycap(struct file *file, void *priv, + struct v4l2_capability *capability) +{ + strlcpy(capability->driver, "radio-si4713", sizeof(capability->driver)); + strlcpy(capability->card, "Silicon Labs Si4713 Modulator", + sizeof(capability->card)); + strlcpy(capability->bus_info, "platform:radio-si4713", + sizeof(capability->bus_info)); + capability->device_caps = V4L2_CAP_MODULATOR | V4L2_CAP_RDS_OUTPUT; + capability->capabilities = capability->device_caps | V4L2_CAP_DEVICE_CAPS; + + return 0; +} + +/* + * v4l2 ioctl call backs. + * we are just a wrapper for v4l2_sub_devs. + */ +static inline struct v4l2_device *get_v4l2_dev(struct file *file) +{ + return &((struct radio_si4713_device *)video_drvdata(file))->v4l2_dev; +} + +static int radio_si4713_g_modulator(struct file *file, void *p, + struct v4l2_modulator *vm) +{ + return v4l2_device_call_until_err(get_v4l2_dev(file), 0, tuner, + g_modulator, vm); +} + +static int radio_si4713_s_modulator(struct file *file, void *p, + const struct v4l2_modulator *vm) +{ + return v4l2_device_call_until_err(get_v4l2_dev(file), 0, tuner, + s_modulator, vm); +} + +static int radio_si4713_g_frequency(struct file *file, void *p, + struct v4l2_frequency *vf) +{ + return v4l2_device_call_until_err(get_v4l2_dev(file), 0, tuner, + g_frequency, vf); +} + +static int radio_si4713_s_frequency(struct file *file, void *p, + const struct v4l2_frequency *vf) +{ + return v4l2_device_call_until_err(get_v4l2_dev(file), 0, tuner, + s_frequency, vf); +} + +static long radio_si4713_default(struct file *file, void *p, + bool valid_prio, unsigned int cmd, void *arg) +{ + return v4l2_device_call_until_err(get_v4l2_dev(file), 0, core, + ioctl, cmd, arg); +} + +static struct v4l2_ioctl_ops radio_si4713_ioctl_ops = { + .vidioc_querycap = radio_si4713_querycap, + .vidioc_g_modulator = radio_si4713_g_modulator, + .vidioc_s_modulator = radio_si4713_s_modulator, + .vidioc_g_frequency = radio_si4713_g_frequency, + .vidioc_s_frequency = radio_si4713_s_frequency, + .vidioc_log_status = v4l2_ctrl_log_status, + .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, + .vidioc_unsubscribe_event = v4l2_event_unsubscribe, + .vidioc_default = radio_si4713_default, +}; + +/* radio_si4713_vdev_template - video device interface */ +static struct video_device radio_si4713_vdev_template = { + .fops = &radio_si4713_fops, + .name = "radio-si4713", + .release = video_device_release_empty, + .ioctl_ops = &radio_si4713_ioctl_ops, + .vfl_dir = VFL_DIR_TX, +}; + +/* Platform driver interface */ +/* radio_si4713_pdriver_probe - probe for the device */ +static int radio_si4713_pdriver_probe(struct platform_device *pdev) +{ + struct radio_si4713_platform_data *pdata = pdev->dev.platform_data; + struct radio_si4713_device *rsdev; + struct i2c_adapter *adapter; + struct v4l2_subdev *sd; + int rval = 0; + + if (!pdata) { + dev_err(&pdev->dev, "Cannot proceed without platform data.\n"); + rval = -EINVAL; + goto exit; + } + + rsdev = devm_kzalloc(&pdev->dev, sizeof(*rsdev), GFP_KERNEL); + if (!rsdev) { + dev_err(&pdev->dev, "Failed to alloc video device.\n"); + rval = -ENOMEM; + goto exit; + } + mutex_init(&rsdev->lock); + + rval = v4l2_device_register(&pdev->dev, &rsdev->v4l2_dev); + if (rval) { + dev_err(&pdev->dev, "Failed to register v4l2 device.\n"); + goto exit; + } + + adapter = i2c_get_adapter(pdata->i2c_bus); + if (!adapter) { + dev_err(&pdev->dev, "Cannot get i2c adapter %d\n", + pdata->i2c_bus); + rval = -ENODEV; + goto unregister_v4l2_dev; + } + + sd = v4l2_i2c_new_subdev_board(&rsdev->v4l2_dev, adapter, + pdata->subdev_board_info, NULL); + if (!sd) { + dev_err(&pdev->dev, "Cannot get v4l2 subdevice\n"); + rval = -ENODEV; + goto put_adapter; + } + + rsdev->radio_dev = radio_si4713_vdev_template; + rsdev->radio_dev.v4l2_dev = &rsdev->v4l2_dev; + rsdev->radio_dev.ctrl_handler = sd->ctrl_handler; + set_bit(V4L2_FL_USE_FH_PRIO, &rsdev->radio_dev.flags); + /* Serialize all access to the si4713 */ + rsdev->radio_dev.lock = &rsdev->lock; + video_set_drvdata(&rsdev->radio_dev, rsdev); + if (video_register_device(&rsdev->radio_dev, VFL_TYPE_RADIO, radio_nr)) { + dev_err(&pdev->dev, "Could not register video device.\n"); + rval = -EIO; + goto put_adapter; + } + dev_info(&pdev->dev, "New device successfully probed\n"); + + goto exit; + +put_adapter: + i2c_put_adapter(adapter); +unregister_v4l2_dev: + v4l2_device_unregister(&rsdev->v4l2_dev); +exit: + return rval; +} + +/* radio_si4713_pdriver_remove - remove the device */ +static int radio_si4713_pdriver_remove(struct platform_device *pdev) +{ + struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev); + struct v4l2_subdev *sd = list_entry(v4l2_dev->subdevs.next, + struct v4l2_subdev, list); + struct i2c_client *client = v4l2_get_subdevdata(sd); + struct radio_si4713_device *rsdev; + + rsdev = container_of(v4l2_dev, struct radio_si4713_device, v4l2_dev); + video_unregister_device(&rsdev->radio_dev); + i2c_put_adapter(client->adapter); + v4l2_device_unregister(&rsdev->v4l2_dev); + + return 0; +} + +static struct platform_driver radio_si4713_pdriver = { + .driver = { + .name = "radio-si4713", + .owner = THIS_MODULE, + }, + .probe = radio_si4713_pdriver_probe, + .remove = radio_si4713_pdriver_remove, +}; + +module_platform_driver(radio_si4713_pdriver); diff --git a/drivers/media/radio/radio-si476x.c b/drivers/media/radio/radio-si476x.c new file mode 100644 index 0000000..7abefe7 --- /dev/null +++ b/drivers/media/radio/radio-si476x.c @@ -0,0 +1,1599 @@ +/* + * drivers/media/radio/radio-si476x.c -- V4L2 driver for SI476X chips + * + * Copyright (C) 2012 Innovative Converged Devices(ICD) + * Copyright (C) 2013 Andrey Smirnov + * + * Author: Andrey Smirnov <andrew.smirnov@gmail.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + */ + +#include <linux/module.h> +#include <linux/delay.h> +#include <linux/interrupt.h> +#include <linux/slab.h> +#include <linux/atomic.h> +#include <linux/videodev2.h> +#include <linux/mutex.h> +#include <linux/debugfs.h> +#include <media/v4l2-common.h> +#include <media/v4l2-ioctl.h> +#include <media/v4l2-ctrls.h> +#include <media/v4l2-event.h> +#include <media/v4l2-device.h> + +#include <media/si476x.h> +#include <linux/mfd/si476x-core.h> + +#define FM_FREQ_RANGE_LOW 64000000 +#define FM_FREQ_RANGE_HIGH 108000000 + +#define AM_FREQ_RANGE_LOW 520000 +#define AM_FREQ_RANGE_HIGH 30000000 + +#define PWRLINEFLTR (1 << 8) + +#define FREQ_MUL (10000000 / 625) + +#define SI476X_PHDIV_STATUS_LINK_LOCKED(status) (0x80 & (status)) + +#define DRIVER_NAME "si476x-radio" +#define DRIVER_CARD "SI476x AM/FM Receiver" + +enum si476x_freq_bands { + SI476X_BAND_FM, + SI476X_BAND_AM, +}; + +static const struct v4l2_frequency_band si476x_bands[] = { + [SI476X_BAND_FM] = { + .type = V4L2_TUNER_RADIO, + .index = SI476X_BAND_FM, + .capability = V4L2_TUNER_CAP_LOW + | V4L2_TUNER_CAP_STEREO + | V4L2_TUNER_CAP_RDS + | V4L2_TUNER_CAP_RDS_BLOCK_IO + | V4L2_TUNER_CAP_FREQ_BANDS, + .rangelow = 64 * FREQ_MUL, + .rangehigh = 108 * FREQ_MUL, + .modulation = V4L2_BAND_MODULATION_FM, + }, + [SI476X_BAND_AM] = { + .type = V4L2_TUNER_RADIO, + .index = SI476X_BAND_AM, + .capability = V4L2_TUNER_CAP_LOW + | V4L2_TUNER_CAP_FREQ_BANDS, + .rangelow = 0.52 * FREQ_MUL, + .rangehigh = 30 * FREQ_MUL, + .modulation = V4L2_BAND_MODULATION_AM, + }, +}; + +static inline bool si476x_radio_freq_is_inside_of_the_band(u32 freq, int band) +{ + return freq >= si476x_bands[band].rangelow && + freq <= si476x_bands[band].rangehigh; +} + +static inline bool si476x_radio_range_is_inside_of_the_band(u32 low, u32 high, + int band) +{ + return low >= si476x_bands[band].rangelow && + high <= si476x_bands[band].rangehigh; +} + +static int si476x_radio_s_ctrl(struct v4l2_ctrl *ctrl); +static int si476x_radio_g_volatile_ctrl(struct v4l2_ctrl *ctrl); + +enum phase_diversity_modes_idx { + SI476X_IDX_PHDIV_DISABLED, + SI476X_IDX_PHDIV_PRIMARY_COMBINING, + SI476X_IDX_PHDIV_PRIMARY_ANTENNA, + SI476X_IDX_PHDIV_SECONDARY_ANTENNA, + SI476X_IDX_PHDIV_SECONDARY_COMBINING, +}; + +static const char * const phase_diversity_modes[] = { + [SI476X_IDX_PHDIV_DISABLED] = "Disabled", + [SI476X_IDX_PHDIV_PRIMARY_COMBINING] = "Primary with Secondary", + [SI476X_IDX_PHDIV_PRIMARY_ANTENNA] = "Primary Antenna", + [SI476X_IDX_PHDIV_SECONDARY_ANTENNA] = "Secondary Antenna", + [SI476X_IDX_PHDIV_SECONDARY_COMBINING] = "Secondary with Primary", +}; + +static inline enum phase_diversity_modes_idx +si476x_phase_diversity_mode_to_idx(enum si476x_phase_diversity_mode mode) +{ + switch (mode) { + default: /* FALLTHROUGH */ + case SI476X_PHDIV_DISABLED: + return SI476X_IDX_PHDIV_DISABLED; + case SI476X_PHDIV_PRIMARY_COMBINING: + return SI476X_IDX_PHDIV_PRIMARY_COMBINING; + case SI476X_PHDIV_PRIMARY_ANTENNA: + return SI476X_IDX_PHDIV_PRIMARY_ANTENNA; + case SI476X_PHDIV_SECONDARY_ANTENNA: + return SI476X_IDX_PHDIV_SECONDARY_ANTENNA; + case SI476X_PHDIV_SECONDARY_COMBINING: + return SI476X_IDX_PHDIV_SECONDARY_COMBINING; + } +} + +static inline enum si476x_phase_diversity_mode +si476x_phase_diversity_idx_to_mode(enum phase_diversity_modes_idx idx) +{ + static const int idx_to_value[] = { + [SI476X_IDX_PHDIV_DISABLED] = SI476X_PHDIV_DISABLED, + [SI476X_IDX_PHDIV_PRIMARY_COMBINING] = SI476X_PHDIV_PRIMARY_COMBINING, + [SI476X_IDX_PHDIV_PRIMARY_ANTENNA] = SI476X_PHDIV_PRIMARY_ANTENNA, + [SI476X_IDX_PHDIV_SECONDARY_ANTENNA] = SI476X_PHDIV_SECONDARY_ANTENNA, + [SI476X_IDX_PHDIV_SECONDARY_COMBINING] = SI476X_PHDIV_SECONDARY_COMBINING, + }; + + return idx_to_value[idx]; +} + +static const struct v4l2_ctrl_ops si476x_ctrl_ops = { + .g_volatile_ctrl = si476x_radio_g_volatile_ctrl, + .s_ctrl = si476x_radio_s_ctrl, +}; + + +enum si476x_ctrl_idx { + SI476X_IDX_RSSI_THRESHOLD, + SI476X_IDX_SNR_THRESHOLD, + SI476X_IDX_MAX_TUNE_ERROR, + SI476X_IDX_HARMONICS_COUNT, + SI476X_IDX_DIVERSITY_MODE, + SI476X_IDX_INTERCHIP_LINK, +}; +static struct v4l2_ctrl_config si476x_ctrls[] = { + + /** + * SI476X during its station seeking(or tuning) process uses several + * parameters to detrmine if "the station" is valid: + * + * - Signal's SNR(in dBuV) must be lower than + * #V4L2_CID_SI476X_SNR_THRESHOLD + * - Signal's RSSI(in dBuV) must be greater than + * #V4L2_CID_SI476X_RSSI_THRESHOLD + * - Signal's frequency deviation(in units of 2ppm) must not be + * more than #V4L2_CID_SI476X_MAX_TUNE_ERROR + */ + [SI476X_IDX_RSSI_THRESHOLD] = { + .ops = &si476x_ctrl_ops, + .id = V4L2_CID_SI476X_RSSI_THRESHOLD, + .name = "Valid RSSI Threshold", + .type = V4L2_CTRL_TYPE_INTEGER, + .min = -128, + .max = 127, + .step = 1, + }, + [SI476X_IDX_SNR_THRESHOLD] = { + .ops = &si476x_ctrl_ops, + .id = V4L2_CID_SI476X_SNR_THRESHOLD, + .type = V4L2_CTRL_TYPE_INTEGER, + .name = "Valid SNR Threshold", + .min = -128, + .max = 127, + .step = 1, + }, + [SI476X_IDX_MAX_TUNE_ERROR] = { + .ops = &si476x_ctrl_ops, + .id = V4L2_CID_SI476X_MAX_TUNE_ERROR, + .type = V4L2_CTRL_TYPE_INTEGER, + .name = "Max Tune Errors", + .min = 0, + .max = 126 * 2, + .step = 2, + }, + + /** + * #V4L2_CID_SI476X_HARMONICS_COUNT -- number of harmonics + * built-in power-line noise supression filter is to reject + * during AM-mode operation. + */ + [SI476X_IDX_HARMONICS_COUNT] = { + .ops = &si476x_ctrl_ops, + .id = V4L2_CID_SI476X_HARMONICS_COUNT, + .type = V4L2_CTRL_TYPE_INTEGER, + + .name = "Count of Harmonics to Reject", + .min = 0, + .max = 20, + .step = 1, + }, + + /** + * #V4L2_CID_SI476X_DIVERSITY_MODE -- configuration which + * two tuners working in diversity mode are to work in. + * + * - #SI476X_IDX_PHDIV_DISABLED diversity mode disabled + * - #SI476X_IDX_PHDIV_PRIMARY_COMBINING diversity mode is + * on, primary tuner's antenna is the main one. + * - #SI476X_IDX_PHDIV_PRIMARY_ANTENNA diversity mode is + * off, primary tuner's antenna is the main one. + * - #SI476X_IDX_PHDIV_SECONDARY_ANTENNA diversity mode is + * off, secondary tuner's antenna is the main one. + * - #SI476X_IDX_PHDIV_SECONDARY_COMBINING diversity mode is + * on, secondary tuner's antenna is the main one. + */ + [SI476X_IDX_DIVERSITY_MODE] = { + .ops = &si476x_ctrl_ops, + .id = V4L2_CID_SI476X_DIVERSITY_MODE, + .type = V4L2_CTRL_TYPE_MENU, + .name = "Phase Diversity Mode", + .qmenu = phase_diversity_modes, + .min = 0, + .max = ARRAY_SIZE(phase_diversity_modes) - 1, + }, + + /** + * #V4L2_CID_SI476X_INTERCHIP_LINK -- inter-chip link in + * diversity mode indicator. Allows user to determine if two + * chips working in diversity mode have established a link + * between each other and if the system as a whole uses + * signals from both antennas to receive FM radio. + */ + [SI476X_IDX_INTERCHIP_LINK] = { + .ops = &si476x_ctrl_ops, + .id = V4L2_CID_SI476X_INTERCHIP_LINK, + .type = V4L2_CTRL_TYPE_BOOLEAN, + .flags = V4L2_CTRL_FLAG_READ_ONLY | V4L2_CTRL_FLAG_VOLATILE, + .name = "Inter-Chip Link", + .min = 0, + .max = 1, + .step = 1, + }, +}; + +struct si476x_radio; + +/** + * struct si476x_radio_ops - vtable of tuner functions + * + * This table holds pointers to functions implementing particular + * operations depending on the mode in which the tuner chip was + * configured to start in. If the function is not supported + * corresponding element is set to #NULL. + * + * @tune_freq: Tune chip to a specific frequency + * @seek_start: Star station seeking + * @rsq_status: Get Recieved Signal Quality(RSQ) status + * @rds_blckcnt: Get recived RDS blocks count + * @phase_diversity: Change phase diversity mode of the tuner + * @phase_div_status: Get phase diversity mode status + * @acf_status: Get the status of Automatically Controlled + * Features(ACF) + * @agc_status: Get Automatic Gain Control(AGC) status + */ +struct si476x_radio_ops { + int (*tune_freq)(struct si476x_core *, struct si476x_tune_freq_args *); + int (*seek_start)(struct si476x_core *, bool, bool); + int (*rsq_status)(struct si476x_core *, struct si476x_rsq_status_args *, + struct si476x_rsq_status_report *); + int (*rds_blckcnt)(struct si476x_core *, bool, + struct si476x_rds_blockcount_report *); + + int (*phase_diversity)(struct si476x_core *, + enum si476x_phase_diversity_mode); + int (*phase_div_status)(struct si476x_core *); + int (*acf_status)(struct si476x_core *, + struct si476x_acf_status_report *); + int (*agc_status)(struct si476x_core *, + struct si476x_agc_status_report *); +}; + +/** + * struct si476x_radio - radio device + * + * @core: Pointer to underlying core device + * @videodev: Pointer to video device created by V4L2 subsystem + * @ops: Vtable of functions. See struct si476x_radio_ops for details + * @kref: Reference counter + * @core_lock: An r/w semaphore to brebvent the deletion of underlying + * core structure is the radio device is being used + */ +struct si476x_radio { + struct v4l2_device v4l2dev; + struct video_device videodev; + struct v4l2_ctrl_handler ctrl_handler; + + struct si476x_core *core; + /* This field should not be accesses unless core lock is held */ + const struct si476x_radio_ops *ops; + + struct dentry *debugfs; + u32 audmode; +}; + +static inline struct si476x_radio * +v4l2_dev_to_radio(struct v4l2_device *d) +{ + return container_of(d, struct si476x_radio, v4l2dev); +} + +static inline struct si476x_radio * +v4l2_ctrl_handler_to_radio(struct v4l2_ctrl_handler *d) +{ + return container_of(d, struct si476x_radio, ctrl_handler); +} + +/* + * si476x_vidioc_querycap - query device capabilities + */ +static int si476x_radio_querycap(struct file *file, void *priv, + struct v4l2_capability *capability) +{ + struct si476x_radio *radio = video_drvdata(file); + + strlcpy(capability->driver, radio->v4l2dev.name, + sizeof(capability->driver)); + strlcpy(capability->card, DRIVER_CARD, sizeof(capability->card)); + snprintf(capability->bus_info, sizeof(capability->bus_info), + "platform:%s", radio->v4l2dev.name); + + capability->device_caps = V4L2_CAP_TUNER + | V4L2_CAP_RADIO + | V4L2_CAP_HW_FREQ_SEEK; + + si476x_core_lock(radio->core); + if (!si476x_core_is_a_secondary_tuner(radio->core)) + capability->device_caps |= V4L2_CAP_RDS_CAPTURE + | V4L2_CAP_READWRITE; + si476x_core_unlock(radio->core); + + capability->capabilities = capability->device_caps + | V4L2_CAP_DEVICE_CAPS; + return 0; +} + +static int si476x_radio_enum_freq_bands(struct file *file, void *priv, + struct v4l2_frequency_band *band) +{ + int err; + struct si476x_radio *radio = video_drvdata(file); + + if (band->tuner != 0) + return -EINVAL; + + switch (radio->core->chip_id) { + /* AM/FM tuners -- all bands are supported */ + case SI476X_CHIP_SI4761: + case SI476X_CHIP_SI4764: + if (band->index < ARRAY_SIZE(si476x_bands)) { + *band = si476x_bands[band->index]; + err = 0; + } else { + err = -EINVAL; + } + break; + /* FM companion tuner chips -- only FM bands are + * supported */ + case SI476X_CHIP_SI4768: + if (band->index == SI476X_BAND_FM) { + *band = si476x_bands[band->index]; + err = 0; + } else { + err = -EINVAL; + } + break; + default: + err = -EINVAL; + } + + return err; +} + +static int si476x_radio_g_tuner(struct file *file, void *priv, + struct v4l2_tuner *tuner) +{ + int err; + struct si476x_rsq_status_report report; + struct si476x_radio *radio = video_drvdata(file); + + struct si476x_rsq_status_args args = { + .primary = false, + .rsqack = false, + .attune = false, + .cancel = false, + .stcack = false, + }; + + if (tuner->index != 0) + return -EINVAL; + + tuner->type = V4L2_TUNER_RADIO; + tuner->capability = V4L2_TUNER_CAP_LOW /* Measure frequencies + * in multiples of + * 62.5 Hz */ + | V4L2_TUNER_CAP_STEREO + | V4L2_TUNER_CAP_HWSEEK_BOUNDED + | V4L2_TUNER_CAP_HWSEEK_WRAP + | V4L2_TUNER_CAP_HWSEEK_PROG_LIM; + + si476x_core_lock(radio->core); + + if (si476x_core_is_a_secondary_tuner(radio->core)) { + strlcpy(tuner->name, "FM (secondary)", sizeof(tuner->name)); + tuner->rxsubchans = 0; + tuner->rangelow = si476x_bands[SI476X_BAND_FM].rangelow; + } else if (si476x_core_has_am(radio->core)) { + if (si476x_core_is_a_primary_tuner(radio->core)) + strlcpy(tuner->name, "AM/FM (primary)", + sizeof(tuner->name)); + else + strlcpy(tuner->name, "AM/FM", sizeof(tuner->name)); + + tuner->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO + | V4L2_TUNER_SUB_RDS; + tuner->capability |= V4L2_TUNER_CAP_RDS + | V4L2_TUNER_CAP_RDS_BLOCK_IO + | V4L2_TUNER_CAP_FREQ_BANDS; + + tuner->rangelow = si476x_bands[SI476X_BAND_AM].rangelow; + } else { + strlcpy(tuner->name, "FM", sizeof(tuner->name)); + tuner->rxsubchans = V4L2_TUNER_SUB_RDS; + tuner->capability |= V4L2_TUNER_CAP_RDS + | V4L2_TUNER_CAP_RDS_BLOCK_IO + | V4L2_TUNER_CAP_FREQ_BANDS; + tuner->rangelow = si476x_bands[SI476X_BAND_FM].rangelow; + } + + tuner->audmode = radio->audmode; + + tuner->afc = 1; + tuner->rangehigh = si476x_bands[SI476X_BAND_FM].rangehigh; + + err = radio->ops->rsq_status(radio->core, + &args, &report); + if (err < 0) { + tuner->signal = 0; + } else { + /* + * tuner->signal value range: 0x0000 .. 0xFFFF, + * report.rssi: -128 .. 127 + */ + tuner->signal = (report.rssi + 128) * 257; + } + si476x_core_unlock(radio->core); + + return err; +} + +static int si476x_radio_s_tuner(struct file *file, void *priv, + const struct v4l2_tuner *tuner) +{ + struct si476x_radio *radio = video_drvdata(file); + + if (tuner->index != 0) + return -EINVAL; + + if (tuner->audmode == V4L2_TUNER_MODE_MONO || + tuner->audmode == V4L2_TUNER_MODE_STEREO) + radio->audmode = tuner->audmode; + else + radio->audmode = V4L2_TUNER_MODE_STEREO; + + return 0; +} + +static int si476x_radio_init_vtable(struct si476x_radio *radio, + enum si476x_func func) +{ + static const struct si476x_radio_ops fm_ops = { + .tune_freq = si476x_core_cmd_fm_tune_freq, + .seek_start = si476x_core_cmd_fm_seek_start, + .rsq_status = si476x_core_cmd_fm_rsq_status, + .rds_blckcnt = si476x_core_cmd_fm_rds_blockcount, + .phase_diversity = si476x_core_cmd_fm_phase_diversity, + .phase_div_status = si476x_core_cmd_fm_phase_div_status, + .acf_status = si476x_core_cmd_fm_acf_status, + .agc_status = si476x_core_cmd_agc_status, + }; + + static const struct si476x_radio_ops am_ops = { + .tune_freq = si476x_core_cmd_am_tune_freq, + .seek_start = si476x_core_cmd_am_seek_start, + .rsq_status = si476x_core_cmd_am_rsq_status, + .rds_blckcnt = NULL, + .phase_diversity = NULL, + .phase_div_status = NULL, + .acf_status = si476x_core_cmd_am_acf_status, + .agc_status = NULL, + }; + + switch (func) { + case SI476X_FUNC_FM_RECEIVER: + radio->ops = &fm_ops; + return 0; + + case SI476X_FUNC_AM_RECEIVER: + radio->ops = &am_ops; + return 0; + default: + WARN(1, "Unexpected tuner function value\n"); + return -EINVAL; + } +} + +static int si476x_radio_pretune(struct si476x_radio *radio, + enum si476x_func func) +{ + int retval; + + struct si476x_tune_freq_args args = { + .zifsr = false, + .hd = false, + .injside = SI476X_INJSIDE_AUTO, + .tunemode = SI476X_TM_VALIDATED_NORMAL_TUNE, + .smoothmetrics = SI476X_SM_INITIALIZE_AUDIO, + .antcap = 0, + }; + + switch (func) { + case SI476X_FUNC_FM_RECEIVER: + args.freq = v4l2_to_si476x(radio->core, + 92 * FREQ_MUL); + retval = radio->ops->tune_freq(radio->core, &args); + break; + case SI476X_FUNC_AM_RECEIVER: + args.freq = v4l2_to_si476x(radio->core, + 0.6 * FREQ_MUL); + retval = radio->ops->tune_freq(radio->core, &args); + break; + default: + WARN(1, "Unexpected tuner function value\n"); + retval = -EINVAL; + } + + return retval; +} +static int si476x_radio_do_post_powerup_init(struct si476x_radio *radio, + enum si476x_func func) +{ + int err; + + /* regcache_mark_dirty(radio->core->regmap); */ + err = regcache_sync_region(radio->core->regmap, + SI476X_PROP_DIGITAL_IO_INPUT_SAMPLE_RATE, + SI476X_PROP_DIGITAL_IO_OUTPUT_FORMAT); + if (err < 0) + return err; + + err = regcache_sync_region(radio->core->regmap, + SI476X_PROP_AUDIO_DEEMPHASIS, + SI476X_PROP_AUDIO_PWR_LINE_FILTER); + if (err < 0) + return err; + + err = regcache_sync_region(radio->core->regmap, + SI476X_PROP_INT_CTL_ENABLE, + SI476X_PROP_INT_CTL_ENABLE); + if (err < 0) + return err; + + /* + * Is there any point in restoring SNR and the like + * when switching between AM/FM? + */ + err = regcache_sync_region(radio->core->regmap, + SI476X_PROP_VALID_MAX_TUNE_ERROR, + SI476X_PROP_VALID_MAX_TUNE_ERROR); + if (err < 0) + return err; + + err = regcache_sync_region(radio->core->regmap, + SI476X_PROP_VALID_SNR_THRESHOLD, + SI476X_PROP_VALID_RSSI_THRESHOLD); + if (err < 0) + return err; + + if (func == SI476X_FUNC_FM_RECEIVER) { + if (si476x_core_has_diversity(radio->core)) { + err = si476x_core_cmd_fm_phase_diversity(radio->core, + radio->core->diversity_mode); + if (err < 0) + return err; + } + + err = regcache_sync_region(radio->core->regmap, + SI476X_PROP_FM_RDS_INTERRUPT_SOURCE, + SI476X_PROP_FM_RDS_CONFIG); + if (err < 0) + return err; + } + + return si476x_radio_init_vtable(radio, func); + +} + +static int si476x_radio_change_func(struct si476x_radio *radio, + enum si476x_func func) +{ + int err; + bool soft; + /* + * Since power/up down is a very time consuming operation, + * try to avoid doing it if the requested mode matches the one + * the tuner is in + */ + if (func == radio->core->power_up_parameters.func) + return 0; + + soft = true; + err = si476x_core_stop(radio->core, soft); + if (err < 0) { + /* + * OK, if the chip does not want to play nice let's + * try to reset it in more brutal way + */ + soft = false; + err = si476x_core_stop(radio->core, soft); + if (err < 0) + return err; + } + /* + Set the desired radio tuner function + */ + radio->core->power_up_parameters.func = func; + + err = si476x_core_start(radio->core, soft); + if (err < 0) + return err; + + /* + * No need to do the rest of manipulations for the bootlader + * mode + */ + if (func != SI476X_FUNC_FM_RECEIVER && + func != SI476X_FUNC_AM_RECEIVER) + return err; + + return si476x_radio_do_post_powerup_init(radio, func); +} + +static int si476x_radio_g_frequency(struct file *file, void *priv, + struct v4l2_frequency *f) +{ + int err; + struct si476x_radio *radio = video_drvdata(file); + + if (f->tuner != 0 || + f->type != V4L2_TUNER_RADIO) + return -EINVAL; + + si476x_core_lock(radio->core); + + if (radio->ops->rsq_status) { + struct si476x_rsq_status_report report; + struct si476x_rsq_status_args args = { + .primary = false, + .rsqack = false, + .attune = true, + .cancel = false, + .stcack = false, + }; + + err = radio->ops->rsq_status(radio->core, &args, &report); + if (!err) + f->frequency = si476x_to_v4l2(radio->core, + report.readfreq); + } else { + err = -EINVAL; + } + + si476x_core_unlock(radio->core); + + return err; +} + +static int si476x_radio_s_frequency(struct file *file, void *priv, + const struct v4l2_frequency *f) +{ + int err; + u32 freq = f->frequency; + struct si476x_tune_freq_args args; + struct si476x_radio *radio = video_drvdata(file); + + const u32 midrange = (si476x_bands[SI476X_BAND_AM].rangehigh + + si476x_bands[SI476X_BAND_FM].rangelow) / 2; + const int band = (freq > midrange) ? + SI476X_BAND_FM : SI476X_BAND_AM; + const enum si476x_func func = (band == SI476X_BAND_AM) ? + SI476X_FUNC_AM_RECEIVER : SI476X_FUNC_FM_RECEIVER; + + if (f->tuner != 0 || + f->type != V4L2_TUNER_RADIO) + return -EINVAL; + + si476x_core_lock(radio->core); + + freq = clamp(freq, + si476x_bands[band].rangelow, + si476x_bands[band].rangehigh); + + if (si476x_radio_freq_is_inside_of_the_band(freq, + SI476X_BAND_AM) && + (!si476x_core_has_am(radio->core) || + si476x_core_is_a_secondary_tuner(radio->core))) { + err = -EINVAL; + goto unlock; + } + + err = si476x_radio_change_func(radio, func); + if (err < 0) + goto unlock; + + args.zifsr = false; + args.hd = false; + args.injside = SI476X_INJSIDE_AUTO; + args.freq = v4l2_to_si476x(radio->core, freq); + args.tunemode = SI476X_TM_VALIDATED_NORMAL_TUNE; + args.smoothmetrics = SI476X_SM_INITIALIZE_AUDIO; + args.antcap = 0; + + err = radio->ops->tune_freq(radio->core, &args); + +unlock: + si476x_core_unlock(radio->core); + return err; +} + +static int si476x_radio_s_hw_freq_seek(struct file *file, void *priv, + const struct v4l2_hw_freq_seek *seek) +{ + int err; + enum si476x_func func; + u32 rangelow, rangehigh; + struct si476x_radio *radio = video_drvdata(file); + + if (file->f_flags & O_NONBLOCK) + return -EAGAIN; + + if (seek->tuner != 0 || + seek->type != V4L2_TUNER_RADIO) + return -EINVAL; + + si476x_core_lock(radio->core); + + if (!seek->rangelow) { + err = regmap_read(radio->core->regmap, + SI476X_PROP_SEEK_BAND_BOTTOM, + &rangelow); + if (!err) + rangelow = si476x_to_v4l2(radio->core, rangelow); + else + goto unlock; + } + if (!seek->rangehigh) { + err = regmap_read(radio->core->regmap, + SI476X_PROP_SEEK_BAND_TOP, + &rangehigh); + if (!err) + rangehigh = si476x_to_v4l2(radio->core, rangehigh); + else + goto unlock; + } + + if (rangelow > rangehigh) { + err = -EINVAL; + goto unlock; + } + + if (si476x_radio_range_is_inside_of_the_band(rangelow, rangehigh, + SI476X_BAND_FM)) { + func = SI476X_FUNC_FM_RECEIVER; + + } else if (si476x_core_has_am(radio->core) && + si476x_radio_range_is_inside_of_the_band(rangelow, rangehigh, + SI476X_BAND_AM)) { + func = SI476X_FUNC_AM_RECEIVER; + } else { + err = -EINVAL; + goto unlock; + } + + err = si476x_radio_change_func(radio, func); + if (err < 0) + goto unlock; + + if (seek->rangehigh) { + err = regmap_write(radio->core->regmap, + SI476X_PROP_SEEK_BAND_TOP, + v4l2_to_si476x(radio->core, + seek->rangehigh)); + if (err) + goto unlock; + } + if (seek->rangelow) { + err = regmap_write(radio->core->regmap, + SI476X_PROP_SEEK_BAND_BOTTOM, + v4l2_to_si476x(radio->core, + seek->rangelow)); + if (err) + goto unlock; + } + if (seek->spacing) { + err = regmap_write(radio->core->regmap, + SI476X_PROP_SEEK_FREQUENCY_SPACING, + v4l2_to_si476x(radio->core, + seek->spacing)); + if (err) + goto unlock; + } + + err = radio->ops->seek_start(radio->core, + seek->seek_upward, + seek->wrap_around); +unlock: + si476x_core_unlock(radio->core); + + + + return err; +} + +static int si476x_radio_g_volatile_ctrl(struct v4l2_ctrl *ctrl) +{ + int retval; + struct si476x_radio *radio = v4l2_ctrl_handler_to_radio(ctrl->handler); + + si476x_core_lock(radio->core); + + switch (ctrl->id) { + case V4L2_CID_SI476X_INTERCHIP_LINK: + if (si476x_core_has_diversity(radio->core)) { + if (radio->ops->phase_diversity) { + retval = radio->ops->phase_div_status(radio->core); + if (retval < 0) + break; + + ctrl->val = !!SI476X_PHDIV_STATUS_LINK_LOCKED(retval); + retval = 0; + break; + } else { + retval = -ENOTTY; + break; + } + } + retval = -EINVAL; + break; + default: + retval = -EINVAL; + break; + } + si476x_core_unlock(radio->core); + return retval; + +} + +static int si476x_radio_s_ctrl(struct v4l2_ctrl *ctrl) +{ + int retval; + enum si476x_phase_diversity_mode mode; + struct si476x_radio *radio = v4l2_ctrl_handler_to_radio(ctrl->handler); + + si476x_core_lock(radio->core); + + switch (ctrl->id) { + case V4L2_CID_SI476X_HARMONICS_COUNT: + retval = regmap_update_bits(radio->core->regmap, + SI476X_PROP_AUDIO_PWR_LINE_FILTER, + SI476X_PROP_PWR_HARMONICS_MASK, + ctrl->val); + break; + case V4L2_CID_POWER_LINE_FREQUENCY: + switch (ctrl->val) { + case V4L2_CID_POWER_LINE_FREQUENCY_DISABLED: + retval = regmap_update_bits(radio->core->regmap, + SI476X_PROP_AUDIO_PWR_LINE_FILTER, + SI476X_PROP_PWR_ENABLE_MASK, + 0); + break; + case V4L2_CID_POWER_LINE_FREQUENCY_50HZ: + retval = regmap_update_bits(radio->core->regmap, + SI476X_PROP_AUDIO_PWR_LINE_FILTER, + SI476X_PROP_PWR_GRID_MASK, + SI476X_PROP_PWR_GRID_50HZ); + break; + case V4L2_CID_POWER_LINE_FREQUENCY_60HZ: + retval = regmap_update_bits(radio->core->regmap, + SI476X_PROP_AUDIO_PWR_LINE_FILTER, + SI476X_PROP_PWR_GRID_MASK, + SI476X_PROP_PWR_GRID_60HZ); + break; + default: + retval = -EINVAL; + break; + } + break; + case V4L2_CID_SI476X_RSSI_THRESHOLD: + retval = regmap_write(radio->core->regmap, + SI476X_PROP_VALID_RSSI_THRESHOLD, + ctrl->val); + break; + case V4L2_CID_SI476X_SNR_THRESHOLD: + retval = regmap_write(radio->core->regmap, + SI476X_PROP_VALID_SNR_THRESHOLD, + ctrl->val); + break; + case V4L2_CID_SI476X_MAX_TUNE_ERROR: + retval = regmap_write(radio->core->regmap, + SI476X_PROP_VALID_MAX_TUNE_ERROR, + ctrl->val); + break; + case V4L2_CID_RDS_RECEPTION: + /* + * It looks like RDS related properties are + * inaccesable when tuner is in AM mode, so cache the + * changes + */ + if (si476x_core_is_in_am_receiver_mode(radio->core)) + regcache_cache_only(radio->core->regmap, true); + + if (ctrl->val) { + retval = regmap_write(radio->core->regmap, + SI476X_PROP_FM_RDS_INTERRUPT_FIFO_COUNT, + radio->core->rds_fifo_depth); + if (retval < 0) + break; + + if (radio->core->client->irq) { + retval = regmap_write(radio->core->regmap, + SI476X_PROP_FM_RDS_INTERRUPT_SOURCE, + SI476X_RDSRECV); + if (retval < 0) + break; + } + + /* Drain RDS FIFO before enabling RDS processing */ + retval = si476x_core_cmd_fm_rds_status(radio->core, + false, + true, + true, + NULL); + if (retval < 0) + break; + + retval = regmap_update_bits(radio->core->regmap, + SI476X_PROP_FM_RDS_CONFIG, + SI476X_PROP_RDSEN_MASK, + SI476X_PROP_RDSEN); + } else { + retval = regmap_update_bits(radio->core->regmap, + SI476X_PROP_FM_RDS_CONFIG, + SI476X_PROP_RDSEN_MASK, + !SI476X_PROP_RDSEN); + } + + if (si476x_core_is_in_am_receiver_mode(radio->core)) + regcache_cache_only(radio->core->regmap, false); + break; + case V4L2_CID_TUNE_DEEMPHASIS: + retval = regmap_write(radio->core->regmap, + SI476X_PROP_AUDIO_DEEMPHASIS, + ctrl->val); + break; + + case V4L2_CID_SI476X_DIVERSITY_MODE: + mode = si476x_phase_diversity_idx_to_mode(ctrl->val); + + if (mode == radio->core->diversity_mode) { + retval = 0; + break; + } + + if (si476x_core_is_in_am_receiver_mode(radio->core)) { + /* + * Diversity cannot be configured while tuner + * is in AM mode so save the changes and carry on. + */ + radio->core->diversity_mode = mode; + retval = 0; + } else { + retval = radio->ops->phase_diversity(radio->core, mode); + if (!retval) + radio->core->diversity_mode = mode; + } + break; + + default: + retval = -EINVAL; + break; + } + + si476x_core_unlock(radio->core); + + return retval; +} + +static int si476x_radio_g_chip_ident(struct file *file, void *fh, + struct v4l2_dbg_chip_ident *chip) +{ + if (chip->match.type == V4L2_CHIP_MATCH_HOST && + v4l2_chip_match_host(&chip->match)) + return 0; + return -EINVAL; +} + + +#ifdef CPTCFG_VIDEO_ADV_DEBUG +static int si476x_radio_g_register(struct file *file, void *fh, + struct v4l2_dbg_register *reg) +{ + int err; + unsigned int value; + struct si476x_radio *radio = video_drvdata(file); + + si476x_core_lock(radio->core); + reg->size = 2; + err = regmap_read(radio->core->regmap, + (unsigned int)reg->reg, &value); + reg->val = value; + si476x_core_unlock(radio->core); + + return err; +} +static int si476x_radio_s_register(struct file *file, void *fh, + const struct v4l2_dbg_register *reg) +{ + + int err; + struct si476x_radio *radio = video_drvdata(file); + + si476x_core_lock(radio->core); + err = regmap_write(radio->core->regmap, + (unsigned int)reg->reg, + (unsigned int)reg->val); + si476x_core_unlock(radio->core); + + return err; +} +#endif + +static int si476x_radio_fops_open(struct file *file) +{ + struct si476x_radio *radio = video_drvdata(file); + int err; + + err = v4l2_fh_open(file); + if (err) + return err; + + if (v4l2_fh_is_singular_file(file)) { + si476x_core_lock(radio->core); + err = si476x_core_set_power_state(radio->core, + SI476X_POWER_UP_FULL); + if (err < 0) + goto done; + + err = si476x_radio_do_post_powerup_init(radio, + radio->core->power_up_parameters.func); + if (err < 0) + goto power_down; + + err = si476x_radio_pretune(radio, + radio->core->power_up_parameters.func); + if (err < 0) + goto power_down; + + si476x_core_unlock(radio->core); + /*Must be done after si476x_core_unlock to prevent a deadlock*/ + v4l2_ctrl_handler_setup(&radio->ctrl_handler); + } + + return err; + +power_down: + si476x_core_set_power_state(radio->core, + SI476X_POWER_DOWN); +done: + si476x_core_unlock(radio->core); + v4l2_fh_release(file); + + return err; +} + +static int si476x_radio_fops_release(struct file *file) +{ + int err; + struct si476x_radio *radio = video_drvdata(file); + + if (v4l2_fh_is_singular_file(file) && + atomic_read(&radio->core->is_alive)) + si476x_core_set_power_state(radio->core, + SI476X_POWER_DOWN); + + err = v4l2_fh_release(file); + + return err; +} + +static ssize_t si476x_radio_fops_read(struct file *file, char __user *buf, + size_t count, loff_t *ppos) +{ + ssize_t rval; + size_t fifo_len; + unsigned int copied; + + struct si476x_radio *radio = video_drvdata(file); + + /* block if no new data available */ + if (kfifo_is_empty(&radio->core->rds_fifo)) { + if (file->f_flags & O_NONBLOCK) + return -EWOULDBLOCK; + + rval = wait_event_interruptible(radio->core->rds_read_queue, + (!kfifo_is_empty(&radio->core->rds_fifo) || + !atomic_read(&radio->core->is_alive))); + if (rval < 0) + return -EINTR; + + if (!atomic_read(&radio->core->is_alive)) + return -ENODEV; + } + + fifo_len = kfifo_len(&radio->core->rds_fifo); + + if (kfifo_to_user(&radio->core->rds_fifo, buf, + min(fifo_len, count), + &copied) != 0) { + dev_warn(&radio->videodev.dev, + "Error during FIFO to userspace copy\n"); + rval = -EIO; + } else { + rval = (ssize_t)copied; + } + + return rval; +} + +static unsigned int si476x_radio_fops_poll(struct file *file, + struct poll_table_struct *pts) +{ + struct si476x_radio *radio = video_drvdata(file); + unsigned long req_events = poll_requested_events(pts); + unsigned int err = v4l2_ctrl_poll(file, pts); + + if (req_events & (POLLIN | POLLRDNORM)) { + if (atomic_read(&radio->core->is_alive)) + poll_wait(file, &radio->core->rds_read_queue, pts); + + if (!atomic_read(&radio->core->is_alive)) + err = POLLHUP; + + if (!kfifo_is_empty(&radio->core->rds_fifo)) + err = POLLIN | POLLRDNORM; + } + + return err; +} + +static const struct v4l2_file_operations si476x_fops = { + .owner = THIS_MODULE, + .read = si476x_radio_fops_read, + .poll = si476x_radio_fops_poll, + .unlocked_ioctl = video_ioctl2, + .open = si476x_radio_fops_open, + .release = si476x_radio_fops_release, +}; + + +static const struct v4l2_ioctl_ops si4761_ioctl_ops = { + .vidioc_querycap = si476x_radio_querycap, + .vidioc_g_tuner = si476x_radio_g_tuner, + .vidioc_s_tuner = si476x_radio_s_tuner, + + .vidioc_g_frequency = si476x_radio_g_frequency, + .vidioc_s_frequency = si476x_radio_s_frequency, + .vidioc_s_hw_freq_seek = si476x_radio_s_hw_freq_seek, + .vidioc_enum_freq_bands = si476x_radio_enum_freq_bands, + + .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, + .vidioc_unsubscribe_event = v4l2_event_unsubscribe, + + .vidioc_g_chip_ident = si476x_radio_g_chip_ident, +#ifdef CPTCFG_VIDEO_ADV_DEBUG + .vidioc_g_register = si476x_radio_g_register, + .vidioc_s_register = si476x_radio_s_register, +#endif +}; + + +static const struct video_device si476x_viddev_template = { + .fops = &si476x_fops, + .name = DRIVER_NAME, + .release = video_device_release_empty, +}; + + + +static ssize_t si476x_radio_read_acf_blob(struct file *file, + char __user *user_buf, + size_t count, loff_t *ppos) +{ + int err; + struct si476x_radio *radio = file->private_data; + struct si476x_acf_status_report report; + + si476x_core_lock(radio->core); + if (radio->ops->acf_status) + err = radio->ops->acf_status(radio->core, &report); + else + err = -ENOENT; + si476x_core_unlock(radio->core); + + if (err < 0) + return err; + + return simple_read_from_buffer(user_buf, count, ppos, &report, + sizeof(report)); +} + +static const struct file_operations radio_acf_fops = { + .open = simple_open, + .llseek = default_llseek, + .read = si476x_radio_read_acf_blob, +}; + +static ssize_t si476x_radio_read_rds_blckcnt_blob(struct file *file, + char __user *user_buf, + size_t count, loff_t *ppos) +{ + int err; + struct si476x_radio *radio = file->private_data; + struct si476x_rds_blockcount_report report; + + si476x_core_lock(radio->core); + if (radio->ops->rds_blckcnt) + err = radio->ops->rds_blckcnt(radio->core, true, + &report); + else + err = -ENOENT; + si476x_core_unlock(radio->core); + + if (err < 0) + return err; + + return simple_read_from_buffer(user_buf, count, ppos, &report, + sizeof(report)); +} + +static const struct file_operations radio_rds_blckcnt_fops = { + .open = simple_open, + .llseek = default_llseek, + .read = si476x_radio_read_rds_blckcnt_blob, +}; + +static ssize_t si476x_radio_read_agc_blob(struct file *file, + char __user *user_buf, + size_t count, loff_t *ppos) +{ + int err; + struct si476x_radio *radio = file->private_data; + struct si476x_agc_status_report report; + + si476x_core_lock(radio->core); + if (radio->ops->rds_blckcnt) + err = radio->ops->agc_status(radio->core, &report); + else + err = -ENOENT; + si476x_core_unlock(radio->core); + + if (err < 0) + return err; + + return simple_read_from_buffer(user_buf, count, ppos, &report, + sizeof(report)); +} + +static const struct file_operations radio_agc_fops = { + .open = simple_open, + .llseek = default_llseek, + .read = si476x_radio_read_agc_blob, +}; + +static ssize_t si476x_radio_read_rsq_blob(struct file *file, + char __user *user_buf, + size_t count, loff_t *ppos) +{ + int err; + struct si476x_radio *radio = file->private_data; + struct si476x_rsq_status_report report; + struct si476x_rsq_status_args args = { + .primary = false, + .rsqack = false, + .attune = false, + .cancel = false, + .stcack = false, + }; + + si476x_core_lock(radio->core); + if (radio->ops->rds_blckcnt) + err = radio->ops->rsq_status(radio->core, &args, &report); + else + err = -ENOENT; + si476x_core_unlock(radio->core); + + if (err < 0) + return err; + + return simple_read_from_buffer(user_buf, count, ppos, &report, + sizeof(report)); +} + +static const struct file_operations radio_rsq_fops = { + .open = simple_open, + .llseek = default_llseek, + .read = si476x_radio_read_rsq_blob, +}; + +static ssize_t si476x_radio_read_rsq_primary_blob(struct file *file, + char __user *user_buf, + size_t count, loff_t *ppos) +{ + int err; + struct si476x_radio *radio = file->private_data; + struct si476x_rsq_status_report report; + struct si476x_rsq_status_args args = { + .primary = true, + .rsqack = false, + .attune = false, + .cancel = false, + .stcack = false, + }; + + si476x_core_lock(radio->core); + if (radio->ops->rds_blckcnt) + err = radio->ops->rsq_status(radio->core, &args, &report); + else + err = -ENOENT; + si476x_core_unlock(radio->core); + + if (err < 0) + return err; + + return simple_read_from_buffer(user_buf, count, ppos, &report, + sizeof(report)); +} + +static const struct file_operations radio_rsq_primary_fops = { + .open = simple_open, + .llseek = default_llseek, + .read = si476x_radio_read_rsq_primary_blob, +}; + + +static int si476x_radio_init_debugfs(struct si476x_radio *radio) +{ + struct dentry *dentry; + int ret; + + dentry = debugfs_create_dir(dev_name(radio->v4l2dev.dev), NULL); + if (IS_ERR(dentry)) { + ret = PTR_ERR(dentry); + goto exit; + } + radio->debugfs = dentry; + + dentry = debugfs_create_file("acf", S_IRUGO, + radio->debugfs, radio, &radio_acf_fops); + if (IS_ERR(dentry)) { + ret = PTR_ERR(dentry); + goto cleanup; + } + + dentry = debugfs_create_file("rds_blckcnt", S_IRUGO, + radio->debugfs, radio, + &radio_rds_blckcnt_fops); + if (IS_ERR(dentry)) { + ret = PTR_ERR(dentry); + goto cleanup; + } + + dentry = debugfs_create_file("agc", S_IRUGO, + radio->debugfs, radio, &radio_agc_fops); + if (IS_ERR(dentry)) { + ret = PTR_ERR(dentry); + goto cleanup; + } + + dentry = debugfs_create_file("rsq", S_IRUGO, + radio->debugfs, radio, &radio_rsq_fops); + if (IS_ERR(dentry)) { + ret = PTR_ERR(dentry); + goto cleanup; + } + + dentry = debugfs_create_file("rsq_primary", S_IRUGO, + radio->debugfs, radio, + &radio_rsq_primary_fops); + if (IS_ERR(dentry)) { + ret = PTR_ERR(dentry); + goto cleanup; + } + + return 0; +cleanup: + debugfs_remove_recursive(radio->debugfs); +exit: + return ret; +} + + +static int si476x_radio_add_new_custom(struct si476x_radio *radio, + enum si476x_ctrl_idx idx) +{ + int rval; + struct v4l2_ctrl *ctrl; + + ctrl = v4l2_ctrl_new_custom(&radio->ctrl_handler, + &si476x_ctrls[idx], + NULL); + rval = radio->ctrl_handler.error; + if (ctrl == NULL && rval) + dev_err(radio->v4l2dev.dev, + "Could not initialize '%s' control %d\n", + si476x_ctrls[idx].name, rval); + + return rval; +} + +static int si476x_radio_probe(struct platform_device *pdev) +{ + int rval; + struct si476x_radio *radio; + struct v4l2_ctrl *ctrl; + + static atomic_t instance = ATOMIC_INIT(0); + + radio = devm_kzalloc(&pdev->dev, sizeof(*radio), GFP_KERNEL); + if (!radio) + return -ENOMEM; + + radio->core = i2c_mfd_cell_to_core(&pdev->dev); + + v4l2_device_set_name(&radio->v4l2dev, DRIVER_NAME, &instance); + + rval = v4l2_device_register(&pdev->dev, &radio->v4l2dev); + if (rval) { + dev_err(&pdev->dev, "Cannot register v4l2_device.\n"); + return rval; + } + + memcpy(&radio->videodev, &si476x_viddev_template, + sizeof(struct video_device)); + + radio->videodev.v4l2_dev = &radio->v4l2dev; + radio->videodev.ioctl_ops = &si4761_ioctl_ops; + + video_set_drvdata(&radio->videodev, radio); + platform_set_drvdata(pdev, radio); + + set_bit(V4L2_FL_USE_FH_PRIO, &radio->videodev.flags); + + radio->v4l2dev.ctrl_handler = &radio->ctrl_handler; + v4l2_ctrl_handler_init(&radio->ctrl_handler, + 1 + ARRAY_SIZE(si476x_ctrls)); + + if (si476x_core_has_am(radio->core)) { + ctrl = v4l2_ctrl_new_std_menu(&radio->ctrl_handler, + &si476x_ctrl_ops, + V4L2_CID_POWER_LINE_FREQUENCY, + V4L2_CID_POWER_LINE_FREQUENCY_60HZ, + 0, 0); + rval = radio->ctrl_handler.error; + if (ctrl == NULL && rval) { + dev_err(&pdev->dev, "Could not initialize V4L2_CID_POWER_LINE_FREQUENCY control %d\n", + rval); + goto exit; + } + + rval = si476x_radio_add_new_custom(radio, + SI476X_IDX_HARMONICS_COUNT); + if (rval < 0) + goto exit; + } + + rval = si476x_radio_add_new_custom(radio, SI476X_IDX_RSSI_THRESHOLD); + if (rval < 0) + goto exit; + + rval = si476x_radio_add_new_custom(radio, SI476X_IDX_SNR_THRESHOLD); + if (rval < 0) + goto exit; + + rval = si476x_radio_add_new_custom(radio, SI476X_IDX_MAX_TUNE_ERROR); + if (rval < 0) + goto exit; + + ctrl = v4l2_ctrl_new_std_menu(&radio->ctrl_handler, + &si476x_ctrl_ops, + V4L2_CID_TUNE_DEEMPHASIS, + V4L2_DEEMPHASIS_75_uS, 0, 0); + rval = radio->ctrl_handler.error; + if (ctrl == NULL && rval) { + dev_err(&pdev->dev, "Could not initialize V4L2_CID_TUNE_DEEMPHASIS control %d\n", + rval); + goto exit; + } + + ctrl = v4l2_ctrl_new_std(&radio->ctrl_handler, &si476x_ctrl_ops, + V4L2_CID_RDS_RECEPTION, + 0, 1, 1, 1); + rval = radio->ctrl_handler.error; + if (ctrl == NULL && rval) { + dev_err(&pdev->dev, "Could not initialize V4L2_CID_RDS_RECEPTION control %d\n", + rval); + goto exit; + } + + if (si476x_core_has_diversity(radio->core)) { + si476x_ctrls[SI476X_IDX_DIVERSITY_MODE].def = + si476x_phase_diversity_mode_to_idx(radio->core->diversity_mode); + si476x_radio_add_new_custom(radio, SI476X_IDX_DIVERSITY_MODE); + if (rval < 0) + goto exit; + + si476x_radio_add_new_custom(radio, SI476X_IDX_INTERCHIP_LINK); + if (rval < 0) + goto exit; + } + + /* register video device */ + rval = video_register_device(&radio->videodev, VFL_TYPE_RADIO, -1); + if (rval < 0) { + dev_err(&pdev->dev, "Could not register video device\n"); + goto exit; + } + + rval = si476x_radio_init_debugfs(radio); + if (rval < 0) { + dev_err(&pdev->dev, "Could not creat debugfs interface\n"); + goto exit; + } + + return 0; +exit: + v4l2_ctrl_handler_free(radio->videodev.ctrl_handler); + return rval; +} + +static int si476x_radio_remove(struct platform_device *pdev) +{ + struct si476x_radio *radio = platform_get_drvdata(pdev); + + v4l2_ctrl_handler_free(radio->videodev.ctrl_handler); + video_unregister_device(&radio->videodev); + v4l2_device_unregister(&radio->v4l2dev); + debugfs_remove_recursive(radio->debugfs); + + return 0; +} + +MODULE_ALIAS("platform:si476x-radio"); + +static struct platform_driver si476x_radio_driver = { + .driver = { + .name = DRIVER_NAME, + .owner = THIS_MODULE, + }, + .probe = si476x_radio_probe, + .remove = si476x_radio_remove, +}; +module_platform_driver(si476x_radio_driver); + +MODULE_AUTHOR("Andrey Smirnov <andrew.smirnov@gmail.com>"); +MODULE_DESCRIPTION("Driver for Si4761/64/68 AM/FM Radio MFD Cell"); +MODULE_LICENSE("GPL"); diff --git a/drivers/media/radio/radio-tea5764.c b/drivers/media/radio/radio-tea5764.c new file mode 100644 index 0000000..a1e99e1 --- /dev/null +++ b/drivers/media/radio/radio-tea5764.c @@ -0,0 +1,595 @@ +/* + * driver/media/radio/radio-tea5764.c + * + * Driver for TEA5764 radio chip for linux 2.6. + * This driver is for TEA5764 chip from NXP, used in EZX phones from Motorola. + * The I2C protocol is used for communicate with chip. + * + * Based in radio-tea5761.c Copyright (C) 2005 Nokia Corporation + * + * Copyright (c) 2008 Fabio Belavenuto <belavenuto@gmail.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * History: + * 2008-12-06 Fabio Belavenuto <belavenuto@gmail.com> + * initial code + * + * TODO: + * add platform_data support for IRQs platform dependencies + * add RDS support + */ +#include <linux/kernel.h> +#include <linux/slab.h> +#include <linux/module.h> +#include <linux/init.h> /* Initdata */ +#include <linux/videodev2.h> /* kernel radio structs */ +#include <linux/i2c.h> /* I2C */ +#include <media/v4l2-common.h> +#include <media/v4l2-ioctl.h> + +#define DRIVER_VERSION "0.0.2" + +#define DRIVER_AUTHOR "Fabio Belavenuto <belavenuto@gmail.com>" +#define DRIVER_DESC "A driver for the TEA5764 radio chip for EZX Phones." + +#define PINFO(format, ...)\ + printk(KERN_INFO KBUILD_MODNAME ": "\ + DRIVER_VERSION ": " format "\n", ## __VA_ARGS__) +#define PWARN(format, ...)\ + printk(KERN_WARNING KBUILD_MODNAME ": "\ + DRIVER_VERSION ": " format "\n", ## __VA_ARGS__) +# define PDEBUG(format, ...)\ + printk(KERN_DEBUG KBUILD_MODNAME ": "\ + DRIVER_VERSION ": " format "\n", ## __VA_ARGS__) + +/* Frequency limits in MHz -- these are European values. For Japanese +devices, that would be 76000 and 91000. */ +#define FREQ_MIN 87500 +#define FREQ_MAX 108000 +#define FREQ_MUL 16 + +/* TEA5764 registers */ +#define TEA5764_MANID 0x002b +#define TEA5764_CHIPID 0x5764 + +#define TEA5764_INTREG_BLMSK 0x0001 +#define TEA5764_INTREG_FRRMSK 0x0002 +#define TEA5764_INTREG_LEVMSK 0x0008 +#define TEA5764_INTREG_IFMSK 0x0010 +#define TEA5764_INTREG_BLMFLAG 0x0100 +#define TEA5764_INTREG_FRRFLAG 0x0200 +#define TEA5764_INTREG_LEVFLAG 0x0800 +#define TEA5764_INTREG_IFFLAG 0x1000 + +#define TEA5764_FRQSET_SUD 0x8000 +#define TEA5764_FRQSET_SM 0x4000 + +#define TEA5764_TNCTRL_PUPD1 0x8000 +#define TEA5764_TNCTRL_PUPD0 0x4000 +#define TEA5764_TNCTRL_BLIM 0x2000 +#define TEA5764_TNCTRL_SWPM 0x1000 +#define TEA5764_TNCTRL_IFCTC 0x0800 +#define TEA5764_TNCTRL_AFM 0x0400 +#define TEA5764_TNCTRL_SMUTE 0x0200 +#define TEA5764_TNCTRL_SNC 0x0100 +#define TEA5764_TNCTRL_MU 0x0080 +#define TEA5764_TNCTRL_SSL1 0x0040 +#define TEA5764_TNCTRL_SSL0 0x0020 +#define TEA5764_TNCTRL_HLSI 0x0010 +#define TEA5764_TNCTRL_MST 0x0008 +#define TEA5764_TNCTRL_SWP 0x0004 +#define TEA5764_TNCTRL_DTC 0x0002 +#define TEA5764_TNCTRL_AHLSI 0x0001 + +#define TEA5764_TUNCHK_LEVEL(x) (((x) & 0x00F0) >> 4) +#define TEA5764_TUNCHK_IFCNT(x) (((x) & 0xFE00) >> 9) +#define TEA5764_TUNCHK_TUNTO 0x0100 +#define TEA5764_TUNCHK_LD 0x0008 +#define TEA5764_TUNCHK_STEREO 0x0004 + +#define TEA5764_TESTREG_TRIGFR 0x0800 + +struct tea5764_regs { + u16 intreg; /* INTFLAG & INTMSK */ + u16 frqset; /* FRQSETMSB & FRQSETLSB */ + u16 tnctrl; /* TNCTRL1 & TNCTRL2 */ + u16 frqchk; /* FRQCHKMSB & FRQCHKLSB */ + u16 tunchk; /* IFCHK & LEVCHK */ + u16 testreg; /* TESTBITS & TESTMODE */ + u16 rdsstat; /* RDSSTAT1 & RDSSTAT2 */ + u16 rdslb; /* RDSLBMSB & RDSLBLSB */ + u16 rdspb; /* RDSPBMSB & RDSPBLSB */ + u16 rdsbc; /* RDSBBC & RDSGBC */ + u16 rdsctrl; /* RDSCTRL1 & RDSCTRL2 */ + u16 rdsbbl; /* PAUSEDET & RDSBBL */ + u16 manid; /* MANID1 & MANID2 */ + u16 chipid; /* CHIPID1 & CHIPID2 */ +} __attribute__ ((packed)); + +struct tea5764_write_regs { + u8 intreg; /* INTMSK */ + u16 frqset; /* FRQSETMSB & FRQSETLSB */ + u16 tnctrl; /* TNCTRL1 & TNCTRL2 */ + u16 testreg; /* TESTBITS & TESTMODE */ + u16 rdsctrl; /* RDSCTRL1 & RDSCTRL2 */ + u16 rdsbbl; /* PAUSEDET & RDSBBL */ +} __attribute__ ((packed)); + +#ifdef CPTCFG_RADIO_TEA5764_XTAL +#define RADIO_TEA5764_XTAL 1 +#else +#define RADIO_TEA5764_XTAL 0 +#endif + +static int radio_nr = -1; +static int use_xtal = RADIO_TEA5764_XTAL; + +struct tea5764_device { + struct i2c_client *i2c_client; + struct video_device *videodev; + struct tea5764_regs regs; + struct mutex mutex; +}; + +/* I2C code related */ +static int tea5764_i2c_read(struct tea5764_device *radio) +{ + int i; + u16 *p = (u16 *) &radio->regs; + + struct i2c_msg msgs[1] = { + { .addr = radio->i2c_client->addr, + .flags = I2C_M_RD, + .len = sizeof(radio->regs), + .buf = (void *)&radio->regs + }, + }; + if (i2c_transfer(radio->i2c_client->adapter, msgs, 1) != 1) + return -EIO; + for (i = 0; i < sizeof(struct tea5764_regs) / sizeof(u16); i++) + p[i] = __be16_to_cpu(p[i]); + + return 0; +} + +static int tea5764_i2c_write(struct tea5764_device *radio) +{ + struct tea5764_write_regs wr; + struct tea5764_regs *r = &radio->regs; + struct i2c_msg msgs[1] = { + { + .addr = radio->i2c_client->addr, + .len = sizeof(wr), + .buf = (void *)&wr + }, + }; + wr.intreg = r->intreg & 0xff; + wr.frqset = __cpu_to_be16(r->frqset); + wr.tnctrl = __cpu_to_be16(r->tnctrl); + wr.testreg = __cpu_to_be16(r->testreg); + wr.rdsctrl = __cpu_to_be16(r->rdsctrl); + wr.rdsbbl = __cpu_to_be16(r->rdsbbl); + if (i2c_transfer(radio->i2c_client->adapter, msgs, 1) != 1) + return -EIO; + return 0; +} + +/* V4L2 code related */ +static struct v4l2_queryctrl radio_qctrl[] = { + { + .id = V4L2_CID_AUDIO_MUTE, + .name = "Mute", + .minimum = 0, + .maximum = 1, + .default_value = 1, + .type = V4L2_CTRL_TYPE_BOOLEAN, + } +}; + +static void tea5764_power_up(struct tea5764_device *radio) +{ + struct tea5764_regs *r = &radio->regs; + + if (!(r->tnctrl & TEA5764_TNCTRL_PUPD0)) { + r->tnctrl &= ~(TEA5764_TNCTRL_AFM | TEA5764_TNCTRL_MU | + TEA5764_TNCTRL_HLSI); + if (!use_xtal) + r->testreg |= TEA5764_TESTREG_TRIGFR; + else + r->testreg &= ~TEA5764_TESTREG_TRIGFR; + + r->tnctrl |= TEA5764_TNCTRL_PUPD0; + tea5764_i2c_write(radio); + } +} + +static void tea5764_power_down(struct tea5764_device *radio) +{ + struct tea5764_regs *r = &radio->regs; + + if (r->tnctrl & TEA5764_TNCTRL_PUPD0) { + r->tnctrl &= ~TEA5764_TNCTRL_PUPD0; + tea5764_i2c_write(radio); + } +} + +static void tea5764_set_freq(struct tea5764_device *radio, int freq) +{ + struct tea5764_regs *r = &radio->regs; + + /* formula: (freq [+ or -] 225000) / 8192 */ + if (r->tnctrl & TEA5764_TNCTRL_HLSI) + r->frqset = (freq + 225000) / 8192; + else + r->frqset = (freq - 225000) / 8192; +} + +static int tea5764_get_freq(struct tea5764_device *radio) +{ + struct tea5764_regs *r = &radio->regs; + + if (r->tnctrl & TEA5764_TNCTRL_HLSI) + return (r->frqchk * 8192) - 225000; + else + return (r->frqchk * 8192) + 225000; +} + +/* tune an frequency, freq is defined by v4l's TUNER_LOW, i.e. 1/16th kHz */ +static void tea5764_tune(struct tea5764_device *radio, int freq) +{ + tea5764_set_freq(radio, freq); + if (tea5764_i2c_write(radio)) + PWARN("Could not set frequency!"); +} + +static void tea5764_set_audout_mode(struct tea5764_device *radio, int audmode) +{ + struct tea5764_regs *r = &radio->regs; + int tnctrl = r->tnctrl; + + if (audmode == V4L2_TUNER_MODE_MONO) + r->tnctrl |= TEA5764_TNCTRL_MST; + else + r->tnctrl &= ~TEA5764_TNCTRL_MST; + if (tnctrl != r->tnctrl) + tea5764_i2c_write(radio); +} + +static int tea5764_get_audout_mode(struct tea5764_device *radio) +{ + struct tea5764_regs *r = &radio->regs; + + if (r->tnctrl & TEA5764_TNCTRL_MST) + return V4L2_TUNER_MODE_MONO; + else + return V4L2_TUNER_MODE_STEREO; +} + +static void tea5764_mute(struct tea5764_device *radio, int on) +{ + struct tea5764_regs *r = &radio->regs; + int tnctrl = r->tnctrl; + + if (on) + r->tnctrl |= TEA5764_TNCTRL_MU; + else + r->tnctrl &= ~TEA5764_TNCTRL_MU; + if (tnctrl != r->tnctrl) + tea5764_i2c_write(radio); +} + +static int tea5764_is_muted(struct tea5764_device *radio) +{ + return radio->regs.tnctrl & TEA5764_TNCTRL_MU; +} + +/* V4L2 vidioc */ +static int vidioc_querycap(struct file *file, void *priv, + struct v4l2_capability *v) +{ + struct tea5764_device *radio = video_drvdata(file); + struct video_device *dev = radio->videodev; + + strlcpy(v->driver, dev->dev.driver->name, sizeof(v->driver)); + strlcpy(v->card, dev->name, sizeof(v->card)); + snprintf(v->bus_info, sizeof(v->bus_info), + "I2C:%s", dev_name(&dev->dev)); + v->capabilities = V4L2_CAP_TUNER | V4L2_CAP_RADIO; + return 0; +} + +static int vidioc_g_tuner(struct file *file, void *priv, + struct v4l2_tuner *v) +{ + struct tea5764_device *radio = video_drvdata(file); + struct tea5764_regs *r = &radio->regs; + + if (v->index > 0) + return -EINVAL; + + memset(v, 0, sizeof(*v)); + strcpy(v->name, "FM"); + v->type = V4L2_TUNER_RADIO; + tea5764_i2c_read(radio); + v->rangelow = FREQ_MIN * FREQ_MUL; + v->rangehigh = FREQ_MAX * FREQ_MUL; + v->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO; + if (r->tunchk & TEA5764_TUNCHK_STEREO) + v->rxsubchans = V4L2_TUNER_SUB_STEREO; + else + v->rxsubchans = V4L2_TUNER_SUB_MONO; + v->audmode = tea5764_get_audout_mode(radio); + v->signal = TEA5764_TUNCHK_LEVEL(r->tunchk) * 0xffff / 0xf; + v->afc = TEA5764_TUNCHK_IFCNT(r->tunchk); + + return 0; +} + +static int vidioc_s_tuner(struct file *file, void *priv, + const struct v4l2_tuner *v) +{ + struct tea5764_device *radio = video_drvdata(file); + + if (v->index > 0) + return -EINVAL; + + tea5764_set_audout_mode(radio, v->audmode); + return 0; +} + +static int vidioc_s_frequency(struct file *file, void *priv, + const struct v4l2_frequency *f) +{ + struct tea5764_device *radio = video_drvdata(file); + + if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO) + return -EINVAL; + if (f->frequency == 0) { + /* We special case this as a power down control. */ + tea5764_power_down(radio); + } + if (f->frequency < (FREQ_MIN * FREQ_MUL)) + return -EINVAL; + if (f->frequency > (FREQ_MAX * FREQ_MUL)) + return -EINVAL; + tea5764_power_up(radio); + tea5764_tune(radio, (f->frequency * 125) / 2); + return 0; +} + +static int vidioc_g_frequency(struct file *file, void *priv, + struct v4l2_frequency *f) +{ + struct tea5764_device *radio = video_drvdata(file); + struct tea5764_regs *r = &radio->regs; + + if (f->tuner != 0) + return -EINVAL; + tea5764_i2c_read(radio); + memset(f, 0, sizeof(*f)); + f->type = V4L2_TUNER_RADIO; + if (r->tnctrl & TEA5764_TNCTRL_PUPD0) + f->frequency = (tea5764_get_freq(radio) * 2) / 125; + else + f->frequency = 0; + + return 0; +} + +static int vidioc_queryctrl(struct file *file, void *priv, + struct v4l2_queryctrl *qc) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) { + if (qc->id && qc->id == radio_qctrl[i].id) { + memcpy(qc, &(radio_qctrl[i]), sizeof(*qc)); + return 0; + } + } + return -EINVAL; +} + +static int vidioc_g_ctrl(struct file *file, void *priv, + struct v4l2_control *ctrl) +{ + struct tea5764_device *radio = video_drvdata(file); + + switch (ctrl->id) { + case V4L2_CID_AUDIO_MUTE: + tea5764_i2c_read(radio); + ctrl->value = tea5764_is_muted(radio) ? 1 : 0; + return 0; + } + return -EINVAL; +} + +static int vidioc_s_ctrl(struct file *file, void *priv, + struct v4l2_control *ctrl) +{ + struct tea5764_device *radio = video_drvdata(file); + + switch (ctrl->id) { + case V4L2_CID_AUDIO_MUTE: + tea5764_mute(radio, ctrl->value); + return 0; + } + return -EINVAL; +} + +static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i) +{ + *i = 0; + return 0; +} + +static int vidioc_s_input(struct file *filp, void *priv, unsigned int i) +{ + if (i != 0) + return -EINVAL; + return 0; +} + +static int vidioc_g_audio(struct file *file, void *priv, + struct v4l2_audio *a) +{ + if (a->index > 1) + return -EINVAL; + + strcpy(a->name, "Radio"); + a->capability = V4L2_AUDCAP_STEREO; + return 0; +} + +static int vidioc_s_audio(struct file *file, void *priv, + const struct v4l2_audio *a) +{ + if (a->index != 0) + return -EINVAL; + + return 0; +} + +/* File system interface */ +static const struct v4l2_file_operations tea5764_fops = { + .owner = THIS_MODULE, + .unlocked_ioctl = video_ioctl2, +}; + +static const struct v4l2_ioctl_ops tea5764_ioctl_ops = { + .vidioc_querycap = vidioc_querycap, + .vidioc_g_tuner = vidioc_g_tuner, + .vidioc_s_tuner = vidioc_s_tuner, + .vidioc_g_audio = vidioc_g_audio, + .vidioc_s_audio = vidioc_s_audio, + .vidioc_g_input = vidioc_g_input, + .vidioc_s_input = vidioc_s_input, + .vidioc_g_frequency = vidioc_g_frequency, + .vidioc_s_frequency = vidioc_s_frequency, + .vidioc_queryctrl = vidioc_queryctrl, + .vidioc_g_ctrl = vidioc_g_ctrl, + .vidioc_s_ctrl = vidioc_s_ctrl, +}; + +/* V4L2 interface */ +static struct video_device tea5764_radio_template = { + .name = "TEA5764 FM-Radio", + .fops = &tea5764_fops, + .ioctl_ops = &tea5764_ioctl_ops, + .release = video_device_release, +}; + +/* I2C probe: check if the device exists and register with v4l if it is */ +static int tea5764_i2c_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct tea5764_device *radio; + struct tea5764_regs *r; + int ret; + + PDEBUG("probe"); + radio = kzalloc(sizeof(struct tea5764_device), GFP_KERNEL); + if (!radio) + return -ENOMEM; + + mutex_init(&radio->mutex); + radio->i2c_client = client; + ret = tea5764_i2c_read(radio); + if (ret) + goto errfr; + r = &radio->regs; + PDEBUG("chipid = %04X, manid = %04X", r->chipid, r->manid); + if (r->chipid != TEA5764_CHIPID || + (r->manid & 0x0fff) != TEA5764_MANID) { + PWARN("This chip is not a TEA5764!"); + ret = -EINVAL; + goto errfr; + } + + radio->videodev = video_device_alloc(); + if (!(radio->videodev)) { + ret = -ENOMEM; + goto errfr; + } + memcpy(radio->videodev, &tea5764_radio_template, + sizeof(tea5764_radio_template)); + + i2c_set_clientdata(client, radio); + video_set_drvdata(radio->videodev, radio); + radio->videodev->lock = &radio->mutex; + + /* initialize and power off the chip */ + tea5764_i2c_read(radio); + tea5764_set_audout_mode(radio, V4L2_TUNER_MODE_STEREO); + tea5764_mute(radio, 1); + tea5764_power_down(radio); + + ret = video_register_device(radio->videodev, VFL_TYPE_RADIO, radio_nr); + if (ret < 0) { + PWARN("Could not register video device!"); + goto errrel; + } + + PINFO("registered."); + return 0; +errrel: + video_device_release(radio->videodev); +errfr: + kfree(radio); + return ret; +} + +static int tea5764_i2c_remove(struct i2c_client *client) +{ + struct tea5764_device *radio = i2c_get_clientdata(client); + + PDEBUG("remove"); + if (radio) { + tea5764_power_down(radio); + video_unregister_device(radio->videodev); + kfree(radio); + } + return 0; +} + +/* I2C subsystem interface */ +static const struct i2c_device_id tea5764_id[] = { + { "radio-tea5764", 0 }, + { } /* Terminating entry */ +}; +MODULE_DEVICE_TABLE(i2c, tea5764_id); + +static struct i2c_driver tea5764_i2c_driver = { + .driver = { + .name = "radio-tea5764", + .owner = THIS_MODULE, + }, + .probe = tea5764_i2c_probe, + .remove = tea5764_i2c_remove, + .id_table = tea5764_id, +}; + +module_i2c_driver(tea5764_i2c_driver); + +MODULE_AUTHOR(DRIVER_AUTHOR); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_LICENSE("GPL"); +MODULE_VERSION(DRIVER_VERSION); + +module_param(use_xtal, int, 0); +MODULE_PARM_DESC(use_xtal, "Chip have a xtal connected in board"); +module_param(radio_nr, int, 0); +MODULE_PARM_DESC(radio_nr, "video4linux device number to use"); diff --git a/drivers/media/radio/radio-tea5777.c b/drivers/media/radio/radio-tea5777.c new file mode 100644 index 0000000..e245597 --- /dev/null +++ b/drivers/media/radio/radio-tea5777.c @@ -0,0 +1,603 @@ +/* + * v4l2 driver for TEA5777 Philips AM/FM radio tuner chips + * + * Copyright (c) 2012 Hans de Goede <hdegoede@redhat.com> + * + * Based on the ALSA driver for TEA5757/5759 Philips AM/FM radio tuner chips: + * + * Copyright (c) 2004 Jaroslav Kysela <perex@perex.cz> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include <linux/delay.h> +#include <linux/init.h> +#include <linux/module.h> +#include <linux/sched.h> +#include <linux/slab.h> +#include <media/v4l2-device.h> +#include <media/v4l2-dev.h> +#include <media/v4l2-fh.h> +#include <media/v4l2-ioctl.h> +#include <media/v4l2-event.h> +#include "radio-tea5777.h" + +MODULE_AUTHOR("Hans de Goede <perex@perex.cz>"); +MODULE_DESCRIPTION("Routines for control of TEA5777 Philips AM/FM radio tuner chips"); +MODULE_LICENSE("GPL"); + +#define TEA5777_FM_IF 150 /* kHz */ +#define TEA5777_FM_FREQ_STEP 50 /* kHz */ + +#define TEA5777_AM_IF 21 /* kHz */ +#define TEA5777_AM_FREQ_STEP 1 /* kHz */ + +/* Write reg, common bits */ +#define TEA5777_W_MUTE_MASK (1LL << 47) +#define TEA5777_W_MUTE_SHIFT 47 +#define TEA5777_W_AM_FM_MASK (1LL << 46) +#define TEA5777_W_AM_FM_SHIFT 46 +#define TEA5777_W_STB_MASK (1LL << 45) +#define TEA5777_W_STB_SHIFT 45 + +#define TEA5777_W_IFCE_MASK (1LL << 29) +#define TEA5777_W_IFCE_SHIFT 29 +#define TEA5777_W_IFW_MASK (1LL << 28) +#define TEA5777_W_IFW_SHIFT 28 +#define TEA5777_W_HILO_MASK (1LL << 27) +#define TEA5777_W_HILO_SHIFT 27 +#define TEA5777_W_DBUS_MASK (1LL << 26) +#define TEA5777_W_DBUS_SHIFT 26 + +#define TEA5777_W_INTEXT_MASK (1LL << 24) +#define TEA5777_W_INTEXT_SHIFT 24 +#define TEA5777_W_P1_MASK (1LL << 23) +#define TEA5777_W_P1_SHIFT 23 +#define TEA5777_W_P0_MASK (1LL << 22) +#define TEA5777_W_P0_SHIFT 22 +#define TEA5777_W_PEN1_MASK (1LL << 21) +#define TEA5777_W_PEN1_SHIFT 21 +#define TEA5777_W_PEN0_MASK (1LL << 20) +#define TEA5777_W_PEN0_SHIFT 20 + +#define TEA5777_W_CHP0_MASK (1LL << 18) +#define TEA5777_W_CHP0_SHIFT 18 +#define TEA5777_W_DEEM_MASK (1LL << 17) +#define TEA5777_W_DEEM_SHIFT 17 + +#define TEA5777_W_SEARCH_MASK (1LL << 7) +#define TEA5777_W_SEARCH_SHIFT 7 +#define TEA5777_W_PROGBLIM_MASK (1LL << 6) +#define TEA5777_W_PROGBLIM_SHIFT 6 +#define TEA5777_W_UPDWN_MASK (1LL << 5) +#define TEA5777_W_UPDWN_SHIFT 5 +#define TEA5777_W_SLEV_MASK (3LL << 3) +#define TEA5777_W_SLEV_SHIFT 3 + +/* Write reg, FM specific bits */ +#define TEA5777_W_FM_PLL_MASK (0x1fffLL << 32) +#define TEA5777_W_FM_PLL_SHIFT 32 +#define TEA5777_W_FM_FREF_MASK (0x03LL << 30) +#define TEA5777_W_FM_FREF_SHIFT 30 +#define TEA5777_W_FM_FREF_VALUE 0LL /* 50k steps, 150k IF */ + +#define TEA5777_W_FM_FORCEMONO_MASK (1LL << 15) +#define TEA5777_W_FM_FORCEMONO_SHIFT 15 +#define TEA5777_W_FM_SDSOFF_MASK (1LL << 14) +#define TEA5777_W_FM_SDSOFF_SHIFT 14 +#define TEA5777_W_FM_DOFF_MASK (1LL << 13) +#define TEA5777_W_FM_DOFF_SHIFT 13 + +#define TEA5777_W_FM_STEP_MASK (3LL << 1) +#define TEA5777_W_FM_STEP_SHIFT 1 + +/* Write reg, AM specific bits */ +#define TEA5777_W_AM_PLL_MASK (0x7ffLL << 34) +#define TEA5777_W_AM_PLL_SHIFT 34 +#define TEA5777_W_AM_AGCRF_MASK (1LL << 33) +#define TEA5777_W_AM_AGCRF_SHIFT 33 +#define TEA5777_W_AM_AGCIF_MASK (1LL << 32) +#define TEA5777_W_AM_AGCIF_SHIFT 32 +#define TEA5777_W_AM_MWLW_MASK (1LL << 31) +#define TEA5777_W_AM_MWLW_SHIFT 31 +#define TEA5777_W_AM_LW 0LL +#define TEA5777_W_AM_MW 1LL +#define TEA5777_W_AM_LNA_MASK (1LL << 30) +#define TEA5777_W_AM_LNA_SHIFT 30 + +#define TEA5777_W_AM_PEAK_MASK (1LL << 25) +#define TEA5777_W_AM_PEAK_SHIFT 25 + +#define TEA5777_W_AM_RFB_MASK (1LL << 16) +#define TEA5777_W_AM_RFB_SHIFT 16 +#define TEA5777_W_AM_CALLIGN_MASK (1LL << 15) +#define TEA5777_W_AM_CALLIGN_SHIFT 15 +#define TEA5777_W_AM_CBANK_MASK (0x7fLL << 8) +#define TEA5777_W_AM_CBANK_SHIFT 8 + +#define TEA5777_W_AM_DELAY_MASK (1LL << 2) +#define TEA5777_W_AM_DELAY_SHIFT 2 +#define TEA5777_W_AM_STEP_MASK (1LL << 1) +#define TEA5777_W_AM_STEP_SHIFT 1 + +/* Read reg, common bits */ +#define TEA5777_R_LEVEL_MASK (0x0f << 17) +#define TEA5777_R_LEVEL_SHIFT 17 +#define TEA5777_R_SFOUND_MASK (0x01 << 16) +#define TEA5777_R_SFOUND_SHIFT 16 +#define TEA5777_R_BLIM_MASK (0x01 << 15) +#define TEA5777_R_BLIM_SHIFT 15 + +/* Read reg, FM specific bits */ +#define TEA5777_R_FM_STEREO_MASK (0x01 << 21) +#define TEA5777_R_FM_STEREO_SHIFT 21 +#define TEA5777_R_FM_PLL_MASK 0x1fff +#define TEA5777_R_FM_PLL_SHIFT 0 + +enum { BAND_FM, BAND_AM }; + +static const struct v4l2_frequency_band bands[] = { + { + .type = V4L2_TUNER_RADIO, + .index = 0, + .capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO | + V4L2_TUNER_CAP_FREQ_BANDS | + V4L2_TUNER_CAP_HWSEEK_BOUNDED | + V4L2_TUNER_CAP_HWSEEK_PROG_LIM, + .rangelow = 76000 * 16, + .rangehigh = 108000 * 16, + .modulation = V4L2_BAND_MODULATION_FM, + }, + { + .type = V4L2_TUNER_RADIO, + .index = 1, + .capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_FREQ_BANDS | + V4L2_TUNER_CAP_HWSEEK_BOUNDED | + V4L2_TUNER_CAP_HWSEEK_PROG_LIM, + .rangelow = 530 * 16, + .rangehigh = 1710 * 16, + .modulation = V4L2_BAND_MODULATION_AM, + }, +}; + +static u32 tea5777_freq_to_v4l2_freq(struct radio_tea5777 *tea, u32 freq) +{ + switch (tea->band) { + case BAND_FM: + return (freq * TEA5777_FM_FREQ_STEP + TEA5777_FM_IF) * 16; + case BAND_AM: + return (freq * TEA5777_AM_FREQ_STEP + TEA5777_AM_IF) * 16; + } + return 0; /* Never reached */ +} + +int radio_tea5777_set_freq(struct radio_tea5777 *tea) +{ + u32 freq; + int res; + + freq = clamp(tea->freq, bands[tea->band].rangelow, + bands[tea->band].rangehigh); + freq = (freq + 8) / 16; /* to kHz */ + + switch (tea->band) { + case BAND_FM: + tea->write_reg &= ~TEA5777_W_AM_FM_MASK; + freq = (freq - TEA5777_FM_IF) / TEA5777_FM_FREQ_STEP; + tea->write_reg &= ~TEA5777_W_FM_PLL_MASK; + tea->write_reg |= (u64)freq << TEA5777_W_FM_PLL_SHIFT; + tea->write_reg &= ~TEA5777_W_FM_FREF_MASK; + tea->write_reg |= TEA5777_W_FM_FREF_VALUE << + TEA5777_W_FM_FREF_SHIFT; + tea->write_reg &= ~TEA5777_W_FM_FORCEMONO_MASK; + if (tea->audmode == V4L2_TUNER_MODE_MONO) + tea->write_reg |= 1LL << TEA5777_W_FM_FORCEMONO_SHIFT; + break; + case BAND_AM: + tea->write_reg &= ~TEA5777_W_AM_FM_MASK; + tea->write_reg |= (1LL << TEA5777_W_AM_FM_SHIFT); + freq = (freq - TEA5777_AM_IF) / TEA5777_AM_FREQ_STEP; + tea->write_reg &= ~TEA5777_W_AM_PLL_MASK; + tea->write_reg |= (u64)freq << TEA5777_W_AM_PLL_SHIFT; + tea->write_reg &= ~TEA5777_W_AM_AGCRF_MASK; + tea->write_reg &= ~TEA5777_W_AM_AGCRF_MASK; + tea->write_reg &= ~TEA5777_W_AM_MWLW_MASK; + tea->write_reg |= TEA5777_W_AM_MW << TEA5777_W_AM_MWLW_SHIFT; + tea->write_reg &= ~TEA5777_W_AM_LNA_MASK; + tea->write_reg |= 1LL << TEA5777_W_AM_LNA_SHIFT; + tea->write_reg &= ~TEA5777_W_AM_PEAK_MASK; + tea->write_reg |= 1LL << TEA5777_W_AM_PEAK_SHIFT; + tea->write_reg &= ~TEA5777_W_AM_CALLIGN_MASK; + break; + } + + res = tea->ops->write_reg(tea, tea->write_reg); + if (res) + return res; + + tea->needs_write = false; + tea->read_reg = -1; + tea->freq = tea5777_freq_to_v4l2_freq(tea, freq); + + return 0; +} + +static int radio_tea5777_update_read_reg(struct radio_tea5777 *tea, int wait) +{ + int res; + + if (tea->read_reg != -1) + return 0; + + if (tea->write_before_read && tea->needs_write) { + res = radio_tea5777_set_freq(tea); + if (res) + return res; + } + + if (wait) { + if (schedule_timeout_interruptible(msecs_to_jiffies(wait))) + return -ERESTARTSYS; + } + + res = tea->ops->read_reg(tea, &tea->read_reg); + if (res) + return res; + + tea->needs_write = true; + return 0; +} + +/* + * Linux Video interface + */ + +static int vidioc_querycap(struct file *file, void *priv, + struct v4l2_capability *v) +{ + struct radio_tea5777 *tea = video_drvdata(file); + + strlcpy(v->driver, tea->v4l2_dev->name, sizeof(v->driver)); + strlcpy(v->card, tea->card, sizeof(v->card)); + strlcat(v->card, " TEA5777", sizeof(v->card)); + strlcpy(v->bus_info, tea->bus_info, sizeof(v->bus_info)); + v->device_caps = V4L2_CAP_TUNER | V4L2_CAP_RADIO; + v->device_caps |= V4L2_CAP_HW_FREQ_SEEK; + v->capabilities = v->device_caps | V4L2_CAP_DEVICE_CAPS; + return 0; +} + +static int vidioc_enum_freq_bands(struct file *file, void *priv, + struct v4l2_frequency_band *band) +{ + struct radio_tea5777 *tea = video_drvdata(file); + + if (band->tuner != 0 || band->index >= ARRAY_SIZE(bands) || + (!tea->has_am && band->index == BAND_AM)) + return -EINVAL; + + *band = bands[band->index]; + return 0; +} + +static int vidioc_g_tuner(struct file *file, void *priv, + struct v4l2_tuner *v) +{ + struct radio_tea5777 *tea = video_drvdata(file); + int res; + + if (v->index > 0) + return -EINVAL; + + res = radio_tea5777_update_read_reg(tea, 0); + if (res) + return res; + + memset(v, 0, sizeof(*v)); + if (tea->has_am) + strlcpy(v->name, "AM/FM", sizeof(v->name)); + else + strlcpy(v->name, "FM", sizeof(v->name)); + v->type = V4L2_TUNER_RADIO; + v->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO | + V4L2_TUNER_CAP_FREQ_BANDS | + V4L2_TUNER_CAP_HWSEEK_BOUNDED | + V4L2_TUNER_CAP_HWSEEK_PROG_LIM; + v->rangelow = tea->has_am ? bands[BAND_AM].rangelow : + bands[BAND_FM].rangelow; + v->rangehigh = bands[BAND_FM].rangehigh; + if (tea->band == BAND_FM && + (tea->read_reg & TEA5777_R_FM_STEREO_MASK)) + v->rxsubchans = V4L2_TUNER_SUB_STEREO; + else + v->rxsubchans = V4L2_TUNER_SUB_MONO; + v->audmode = tea->audmode; + /* shift - 12 to convert 4-bits (0-15) scale to 16-bits (0-65535) */ + v->signal = (tea->read_reg & TEA5777_R_LEVEL_MASK) >> + (TEA5777_R_LEVEL_SHIFT - 12); + + /* Invalidate read_reg, so that next call we return up2date signal */ + tea->read_reg = -1; + + return 0; +} + +static int vidioc_s_tuner(struct file *file, void *priv, + const struct v4l2_tuner *v) +{ + struct radio_tea5777 *tea = video_drvdata(file); + u32 orig_audmode = tea->audmode; + + if (v->index) + return -EINVAL; + + tea->audmode = v->audmode; + if (tea->audmode > V4L2_TUNER_MODE_STEREO) + tea->audmode = V4L2_TUNER_MODE_STEREO; + + if (tea->audmode != orig_audmode && tea->band == BAND_FM) + return radio_tea5777_set_freq(tea); + + return 0; +} + +static int vidioc_g_frequency(struct file *file, void *priv, + struct v4l2_frequency *f) +{ + struct radio_tea5777 *tea = video_drvdata(file); + + if (f->tuner != 0) + return -EINVAL; + f->type = V4L2_TUNER_RADIO; + f->frequency = tea->freq; + return 0; +} + +static int vidioc_s_frequency(struct file *file, void *priv, + const struct v4l2_frequency *f) +{ + struct radio_tea5777 *tea = video_drvdata(file); + + if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO) + return -EINVAL; + + if (tea->has_am && f->frequency < (20000 * 16)) + tea->band = BAND_AM; + else + tea->band = BAND_FM; + + tea->freq = f->frequency; + return radio_tea5777_set_freq(tea); +} + +static int vidioc_s_hw_freq_seek(struct file *file, void *fh, + const struct v4l2_hw_freq_seek *a) +{ + struct radio_tea5777 *tea = video_drvdata(file); + unsigned long timeout; + u32 rangelow = a->rangelow; + u32 rangehigh = a->rangehigh; + int i, res, spacing; + u32 orig_freq; + + if (a->tuner || a->wrap_around) + return -EINVAL; + + if (file->f_flags & O_NONBLOCK) + return -EWOULDBLOCK; + + if (rangelow || rangehigh) { + for (i = 0; i < ARRAY_SIZE(bands); i++) { + if (i == BAND_AM && !tea->has_am) + continue; + if (bands[i].rangelow >= rangelow && + bands[i].rangehigh <= rangehigh) + break; + } + if (i == ARRAY_SIZE(bands)) + return -EINVAL; /* No matching band found */ + + tea->band = i; + if (tea->freq < rangelow || tea->freq > rangehigh) { + tea->freq = clamp(tea->freq, rangelow, + rangehigh); + res = radio_tea5777_set_freq(tea); + if (res) + return res; + } + } else { + rangelow = bands[tea->band].rangelow; + rangehigh = bands[tea->band].rangehigh; + } + + spacing = (tea->band == BAND_AM) ? (5 * 16) : (200 * 16); /* kHz */ + orig_freq = tea->freq; + + tea->write_reg |= TEA5777_W_PROGBLIM_MASK; + if (tea->seek_rangelow != rangelow) { + tea->write_reg &= ~TEA5777_W_UPDWN_MASK; + tea->freq = rangelow; + res = radio_tea5777_set_freq(tea); + if (res) + goto leave; + tea->seek_rangelow = rangelow; + } + if (tea->seek_rangehigh != rangehigh) { + tea->write_reg |= TEA5777_W_UPDWN_MASK; + tea->freq = rangehigh; + res = radio_tea5777_set_freq(tea); + if (res) + goto leave; + tea->seek_rangehigh = rangehigh; + } + tea->write_reg &= ~TEA5777_W_PROGBLIM_MASK; + + tea->write_reg |= TEA5777_W_SEARCH_MASK; + if (a->seek_upward) { + tea->write_reg |= TEA5777_W_UPDWN_MASK; + tea->freq = orig_freq + spacing; + } else { + tea->write_reg &= ~TEA5777_W_UPDWN_MASK; + tea->freq = orig_freq - spacing; + } + res = radio_tea5777_set_freq(tea); + if (res) + goto leave; + + timeout = jiffies + msecs_to_jiffies(5000); + for (;;) { + if (time_after(jiffies, timeout)) { + res = -ENODATA; + break; + } + + res = radio_tea5777_update_read_reg(tea, 100); + if (res) + break; + + /* + * Note we use tea->freq to track how far we've searched sofar + * this is necessary to ensure we continue seeking at the right + * point, in the write_before_read case. + */ + tea->freq = (tea->read_reg & TEA5777_R_FM_PLL_MASK); + tea->freq = tea5777_freq_to_v4l2_freq(tea, tea->freq); + + if ((tea->read_reg & TEA5777_R_SFOUND_MASK)) { + tea->write_reg &= ~TEA5777_W_SEARCH_MASK; + return 0; + } + + if (tea->read_reg & TEA5777_R_BLIM_MASK) { + res = -ENODATA; + break; + } + + /* Force read_reg update */ + tea->read_reg = -1; + } +leave: + tea->write_reg &= ~TEA5777_W_PROGBLIM_MASK; + tea->write_reg &= ~TEA5777_W_SEARCH_MASK; + tea->freq = orig_freq; + radio_tea5777_set_freq(tea); + return res; +} + +static int tea575x_s_ctrl(struct v4l2_ctrl *c) +{ + struct radio_tea5777 *tea = + container_of(c->handler, struct radio_tea5777, ctrl_handler); + + switch (c->id) { + case V4L2_CID_AUDIO_MUTE: + if (c->val) + tea->write_reg |= TEA5777_W_MUTE_MASK; + else + tea->write_reg &= ~TEA5777_W_MUTE_MASK; + + return radio_tea5777_set_freq(tea); + } + + return -EINVAL; +} + +static const struct v4l2_file_operations tea575x_fops = { + .unlocked_ioctl = video_ioctl2, + .open = v4l2_fh_open, + .release = v4l2_fh_release, + .poll = v4l2_ctrl_poll, +}; + +static const struct v4l2_ioctl_ops tea575x_ioctl_ops = { + .vidioc_querycap = vidioc_querycap, + .vidioc_g_tuner = vidioc_g_tuner, + .vidioc_s_tuner = vidioc_s_tuner, + .vidioc_g_frequency = vidioc_g_frequency, + .vidioc_s_frequency = vidioc_s_frequency, + .vidioc_s_hw_freq_seek = vidioc_s_hw_freq_seek, + .vidioc_enum_freq_bands = vidioc_enum_freq_bands, + .vidioc_log_status = v4l2_ctrl_log_status, + .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, + .vidioc_unsubscribe_event = v4l2_event_unsubscribe, +}; + +static const struct video_device tea575x_radio = { + .ioctl_ops = &tea575x_ioctl_ops, + .release = video_device_release_empty, +}; + +static const struct v4l2_ctrl_ops tea575x_ctrl_ops = { + .s_ctrl = tea575x_s_ctrl, +}; + +int radio_tea5777_init(struct radio_tea5777 *tea, struct module *owner) +{ + int res; + + tea->write_reg = (1LL << TEA5777_W_IFCE_SHIFT) | + (1LL << TEA5777_W_IFW_SHIFT) | + (1LL << TEA5777_W_INTEXT_SHIFT) | + (1LL << TEA5777_W_CHP0_SHIFT) | + (1LL << TEA5777_W_SLEV_SHIFT); + tea->freq = 90500 * 16; /* 90.5Mhz default */ + tea->audmode = V4L2_TUNER_MODE_STEREO; + res = radio_tea5777_set_freq(tea); + if (res) { + v4l2_err(tea->v4l2_dev, "can't set initial freq (%d)\n", res); + return res; + } + + tea->vd = tea575x_radio; + video_set_drvdata(&tea->vd, tea); + mutex_init(&tea->mutex); + strlcpy(tea->vd.name, tea->v4l2_dev->name, sizeof(tea->vd.name)); + tea->vd.lock = &tea->mutex; + tea->vd.v4l2_dev = tea->v4l2_dev; + tea->fops = tea575x_fops; + tea->fops.owner = owner; + tea->vd.fops = &tea->fops; + set_bit(V4L2_FL_USE_FH_PRIO, &tea->vd.flags); + + tea->vd.ctrl_handler = &tea->ctrl_handler; + v4l2_ctrl_handler_init(&tea->ctrl_handler, 1); + v4l2_ctrl_new_std(&tea->ctrl_handler, &tea575x_ctrl_ops, + V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1); + res = tea->ctrl_handler.error; + if (res) { + v4l2_err(tea->v4l2_dev, "can't initialize controls\n"); + v4l2_ctrl_handler_free(&tea->ctrl_handler); + return res; + } + v4l2_ctrl_handler_setup(&tea->ctrl_handler); + + res = video_register_device(&tea->vd, VFL_TYPE_RADIO, -1); + if (res) { + v4l2_err(tea->v4l2_dev, "can't register video device!\n"); + v4l2_ctrl_handler_free(tea->vd.ctrl_handler); + return res; + } + + return 0; +} +EXPORT_SYMBOL_GPL(radio_tea5777_init); + +void radio_tea5777_exit(struct radio_tea5777 *tea) +{ + video_unregister_device(&tea->vd); + v4l2_ctrl_handler_free(tea->vd.ctrl_handler); +} +EXPORT_SYMBOL_GPL(radio_tea5777_exit); diff --git a/drivers/media/radio/radio-tea5777.h b/drivers/media/radio/radio-tea5777.h new file mode 100644 index 0000000..4ea43a9 --- /dev/null +++ b/drivers/media/radio/radio-tea5777.h @@ -0,0 +1,90 @@ +#ifndef __RADIO_TEA5777_H +#define __RADIO_TEA5777_H + +/* + * v4l2 driver for TEA5777 Philips AM/FM radio tuner chips + * + * Copyright (c) 2012 Hans de Goede <hdegoede@redhat.com> + * + * Based on the ALSA driver for TEA5757/5759 Philips AM/FM radio tuner chips: + * + * Copyright (c) 2004 Jaroslav Kysela <perex@perex.cz> + * Copyright (c) 2012 Hans de Goede <hdegoede@redhat.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include <linux/videodev2.h> +#include <media/v4l2-ctrls.h> +#include <media/v4l2-dev.h> +#include <media/v4l2-device.h> + +#define TEA575X_FMIF 10700 +#define TEA575X_AMIF 450 + +struct radio_tea5777; + +struct radio_tea5777_ops { + /* + * Write the 6 bytes large write register of the tea5777 + * + * val represents the 6 write registers, with byte 1 from the + * datasheet being the most significant byte (so byte 5 of the u64), + * and byte 6 from the datasheet being the least significant byte. + * + * returns 0 on success. + */ + int (*write_reg)(struct radio_tea5777 *tea, u64 val); + /* + * Read the 3 bytes large read register of the tea5777 + * + * The read value gets returned in val, akin to write_reg, byte 1 from + * the datasheet is stored as the most significant byte (so byte 2 of + * the u32), and byte 3 from the datasheet gets stored as the least + * significant byte (iow byte 0 of the u32). + * + * returns 0 on success. + */ + int (*read_reg)(struct radio_tea5777 *tea, u32 *val); +}; + +struct radio_tea5777 { + struct v4l2_device *v4l2_dev; + struct v4l2_file_operations fops; + struct video_device vd; /* video device */ + bool has_am; /* Device can tune to AM freqs */ + bool write_before_read; /* must write before read quirk */ + bool needs_write; /* for write before read quirk */ + u32 band; /* current band */ + u32 freq; /* current frequency */ + u32 audmode; /* last set audmode */ + u32 seek_rangelow; /* current hwseek limits */ + u32 seek_rangehigh; + u32 read_reg; + u64 write_reg; + struct mutex mutex; + struct radio_tea5777_ops *ops; + void *private_data; + u8 card[32]; + u8 bus_info[32]; + struct v4l2_ctrl_handler ctrl_handler; +}; + +int radio_tea5777_init(struct radio_tea5777 *tea, struct module *owner); +void radio_tea5777_exit(struct radio_tea5777 *tea); +int radio_tea5777_set_freq(struct radio_tea5777 *tea); + +#endif /* __RADIO_TEA5777_H */ diff --git a/drivers/media/radio/radio-terratec.c b/drivers/media/radio/radio-terratec.c new file mode 100644 index 0000000..be10a80 --- /dev/null +++ b/drivers/media/radio/radio-terratec.c @@ -0,0 +1,170 @@ +/* Terratec ActiveRadio ISA Standalone card driver for Linux radio support + * (c) 1999 R. Offermanns (rolf@offermanns.de) + * based on the aimslab radio driver from M. Kirkwood + * many thanks to Michael Becker and Friedhelm Birth (from TerraTec) + * + * + * History: + * 1999-05-21 First preview release + * + * Notes on the hardware: + * There are two "main" chips on the card: + * - Philips OM5610 (http://www-us.semiconductors.philips.com/acrobat/datasheets/OM5610_2.pdf) + * - Philips SAA6588 (http://www-us.semiconductors.philips.com/acrobat/datasheets/SAA6588_1.pdf) + * (you can get the datasheet at the above links) + * + * Frequency control is done digitally -- ie out(port,encodefreq(95.8)); + * Volume Control is done digitally + * + * Converted to the radio-isa framework by Hans Verkuil <hans.verkuil@cisco.com> + * Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org> + */ + +#include <linux/module.h> /* Modules */ +#include <linux/init.h> /* Initdata */ +#include <linux/ioport.h> /* request_region */ +#include <linux/videodev2.h> /* kernel radio structs */ +#include <linux/mutex.h> +#include <linux/io.h> /* outb, outb_p */ +#include <linux/slab.h> +#include <media/v4l2-device.h> +#include <media/v4l2-ioctl.h> +#include "radio-isa.h" + +MODULE_AUTHOR("R. Offermans & others"); +MODULE_DESCRIPTION("A driver for the TerraTec ActiveRadio Standalone radio card."); +MODULE_LICENSE("GPL"); +MODULE_VERSION("0.1.99"); + +/* Note: there seems to be only one possible port (0x590), but without + hardware this is hard to verify. For now, this is the only one we will + support. */ +static int io = 0x590; +static int radio_nr = -1; + +module_param(radio_nr, int, 0444); +MODULE_PARM_DESC(radio_nr, "Radio device number"); + +#define WRT_DIS 0x00 +#define CLK_OFF 0x00 +#define IIC_DATA 0x01 +#define IIC_CLK 0x02 +#define DATA 0x04 +#define CLK_ON 0x08 +#define WRT_EN 0x10 + +static struct radio_isa_card *terratec_alloc(void) +{ + return kzalloc(sizeof(struct radio_isa_card), GFP_KERNEL); +} + +static int terratec_s_mute_volume(struct radio_isa_card *isa, bool mute, int vol) +{ + int i; + + if (mute) + vol = 0; + vol = vol + (vol * 32); /* change both channels */ + for (i = 0; i < 8; i++) { + if (vol & (0x80 >> i)) + outb(0x80, isa->io + 1); + else + outb(0x00, isa->io + 1); + } + return 0; +} + + +/* this is the worst part in this driver */ +/* many more or less strange things are going on here, but hey, it works :) */ + +static int terratec_s_frequency(struct radio_isa_card *isa, u32 freq) +{ + int i; + int p; + int temp; + long rest; + unsigned char buffer[25]; /* we have to bit shift 25 registers */ + + freq = freq / 160; /* convert the freq. to a nice to handle value */ + memset(buffer, 0, sizeof(buffer)); + + rest = freq * 10 + 10700; /* I once had understood what is going on here */ + /* maybe some wise guy (friedhelm?) can comment this stuff */ + i = 13; + p = 10; + temp = 102400; + while (rest != 0) { + if (rest % temp == rest) + buffer[i] = 0; + else { + buffer[i] = 1; + rest = rest - temp; + } + i--; + p--; + temp = temp / 2; + } + + for (i = 24; i > -1; i--) { /* bit shift the values to the radiocard */ + if (buffer[i] == 1) { + outb(WRT_EN | DATA, isa->io); + outb(WRT_EN | DATA | CLK_ON, isa->io); + outb(WRT_EN | DATA, isa->io); + } else { + outb(WRT_EN | 0x00, isa->io); + outb(WRT_EN | 0x00 | CLK_ON, isa->io); + } + } + outb(0x00, isa->io); + return 0; +} + +static u32 terratec_g_signal(struct radio_isa_card *isa) +{ + /* bit set = no signal present */ + return (inb(isa->io) & 2) ? 0 : 0xffff; +} + +static const struct radio_isa_ops terratec_ops = { + .alloc = terratec_alloc, + .s_mute_volume = terratec_s_mute_volume, + .s_frequency = terratec_s_frequency, + .g_signal = terratec_g_signal, +}; + +static const int terratec_ioports[] = { 0x590 }; + +static struct radio_isa_driver terratec_driver = { + .driver = { + .match = radio_isa_match, + .probe = radio_isa_probe, + .remove = radio_isa_remove, + .driver = { + .name = "radio-terratec", + }, + }, + .io_params = &io, + .radio_nr_params = &radio_nr, + .io_ports = terratec_ioports, + .num_of_io_ports = ARRAY_SIZE(terratec_ioports), + .region_size = 2, + .card = "TerraTec ActiveRadio", + .ops = &terratec_ops, + .has_stereo = true, + .max_volume = 10, +}; + +static int __init terratec_init(void) +{ + return isa_register_driver(&terratec_driver.driver, 1); +} + +static void __exit terratec_exit(void) +{ + isa_unregister_driver(&terratec_driver.driver); +} + +module_init(terratec_init); +module_exit(terratec_exit); + diff --git a/drivers/media/radio/radio-timb.c b/drivers/media/radio/radio-timb.c new file mode 100644 index 0000000..bb7b143 --- /dev/null +++ b/drivers/media/radio/radio-timb.c @@ -0,0 +1,231 @@ +/* + * radio-timb.c Timberdale FPGA Radio driver + * Copyright (c) 2009 Intel Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include <linux/io.h> +#include <media/v4l2-ioctl.h> +#include <media/v4l2-device.h> +#include <linux/platform_device.h> +#include <linux/interrupt.h> +#include <linux/slab.h> +#include <linux/i2c.h> +#include <linux/module.h> +#include <media/timb_radio.h> + +#define DRIVER_NAME "timb-radio" + +struct timbradio { + struct timb_radio_platform_data pdata; + struct v4l2_subdev *sd_tuner; + struct v4l2_subdev *sd_dsp; + struct video_device video_dev; + struct v4l2_device v4l2_dev; + struct mutex lock; +}; + + +static int timbradio_vidioc_querycap(struct file *file, void *priv, + struct v4l2_capability *v) +{ + strlcpy(v->driver, DRIVER_NAME, sizeof(v->driver)); + strlcpy(v->card, "Timberdale Radio", sizeof(v->card)); + snprintf(v->bus_info, sizeof(v->bus_info), "platform:"DRIVER_NAME); + v->capabilities = V4L2_CAP_TUNER | V4L2_CAP_RADIO; + return 0; +} + +static int timbradio_vidioc_g_tuner(struct file *file, void *priv, + struct v4l2_tuner *v) +{ + struct timbradio *tr = video_drvdata(file); + return v4l2_subdev_call(tr->sd_tuner, tuner, g_tuner, v); +} + +static int timbradio_vidioc_s_tuner(struct file *file, void *priv, + const struct v4l2_tuner *v) +{ + struct timbradio *tr = video_drvdata(file); + return v4l2_subdev_call(tr->sd_tuner, tuner, s_tuner, v); +} + +static int timbradio_vidioc_g_input(struct file *filp, void *priv, + unsigned int *i) +{ + *i = 0; + return 0; +} + +static int timbradio_vidioc_s_input(struct file *filp, void *priv, + unsigned int i) +{ + return i ? -EINVAL : 0; +} + +static int timbradio_vidioc_g_audio(struct file *file, void *priv, + struct v4l2_audio *a) +{ + a->index = 0; + strlcpy(a->name, "Radio", sizeof(a->name)); + a->capability = V4L2_AUDCAP_STEREO; + return 0; +} + +static int timbradio_vidioc_s_audio(struct file *file, void *priv, + const struct v4l2_audio *a) +{ + return a->index ? -EINVAL : 0; +} + +static int timbradio_vidioc_s_frequency(struct file *file, void *priv, + const struct v4l2_frequency *f) +{ + struct timbradio *tr = video_drvdata(file); + return v4l2_subdev_call(tr->sd_tuner, tuner, s_frequency, f); +} + +static int timbradio_vidioc_g_frequency(struct file *file, void *priv, + struct v4l2_frequency *f) +{ + struct timbradio *tr = video_drvdata(file); + return v4l2_subdev_call(tr->sd_tuner, tuner, g_frequency, f); +} + +static int timbradio_vidioc_queryctrl(struct file *file, void *priv, + struct v4l2_queryctrl *qc) +{ + struct timbradio *tr = video_drvdata(file); + return v4l2_subdev_call(tr->sd_dsp, core, queryctrl, qc); +} + +static int timbradio_vidioc_g_ctrl(struct file *file, void *priv, + struct v4l2_control *ctrl) +{ + struct timbradio *tr = video_drvdata(file); + return v4l2_subdev_call(tr->sd_dsp, core, g_ctrl, ctrl); +} + +static int timbradio_vidioc_s_ctrl(struct file *file, void *priv, + struct v4l2_control *ctrl) +{ + struct timbradio *tr = video_drvdata(file); + return v4l2_subdev_call(tr->sd_dsp, core, s_ctrl, ctrl); +} + +static const struct v4l2_ioctl_ops timbradio_ioctl_ops = { + .vidioc_querycap = timbradio_vidioc_querycap, + .vidioc_g_tuner = timbradio_vidioc_g_tuner, + .vidioc_s_tuner = timbradio_vidioc_s_tuner, + .vidioc_g_frequency = timbradio_vidioc_g_frequency, + .vidioc_s_frequency = timbradio_vidioc_s_frequency, + .vidioc_g_input = timbradio_vidioc_g_input, + .vidioc_s_input = timbradio_vidioc_s_input, + .vidioc_g_audio = timbradio_vidioc_g_audio, + .vidioc_s_audio = timbradio_vidioc_s_audio, + .vidioc_queryctrl = timbradio_vidioc_queryctrl, + .vidioc_g_ctrl = timbradio_vidioc_g_ctrl, + .vidioc_s_ctrl = timbradio_vidioc_s_ctrl +}; + +static const struct v4l2_file_operations timbradio_fops = { + .owner = THIS_MODULE, + .unlocked_ioctl = video_ioctl2, +}; + +static int timbradio_probe(struct platform_device *pdev) +{ + struct timb_radio_platform_data *pdata = pdev->dev.platform_data; + struct timbradio *tr; + int err; + + if (!pdata) { + dev_err(&pdev->dev, "Platform data missing\n"); + err = -EINVAL; + goto err; + } + + tr = devm_kzalloc(&pdev->dev, sizeof(*tr), GFP_KERNEL); + if (!tr) { + err = -ENOMEM; + goto err; + } + + tr->pdata = *pdata; + mutex_init(&tr->lock); + + strlcpy(tr->video_dev.name, "Timberdale Radio", + sizeof(tr->video_dev.name)); + tr->video_dev.fops = &timbradio_fops; + tr->video_dev.ioctl_ops = &timbradio_ioctl_ops; + tr->video_dev.release = video_device_release_empty; + tr->video_dev.minor = -1; + tr->video_dev.lock = &tr->lock; + + strlcpy(tr->v4l2_dev.name, DRIVER_NAME, sizeof(tr->v4l2_dev.name)); + err = v4l2_device_register(NULL, &tr->v4l2_dev); + if (err) + goto err; + + tr->video_dev.v4l2_dev = &tr->v4l2_dev; + + err = video_register_device(&tr->video_dev, VFL_TYPE_RADIO, -1); + if (err) { + dev_err(&pdev->dev, "Error reg video\n"); + goto err_video_req; + } + + video_set_drvdata(&tr->video_dev, tr); + + platform_set_drvdata(pdev, tr); + return 0; + +err_video_req: + video_device_release_empty(&tr->video_dev); + v4l2_device_unregister(&tr->v4l2_dev); +err: + dev_err(&pdev->dev, "Failed to register: %d\n", err); + + return err; +} + +static int timbradio_remove(struct platform_device *pdev) +{ + struct timbradio *tr = platform_get_drvdata(pdev); + + video_unregister_device(&tr->video_dev); + video_device_release_empty(&tr->video_dev); + + v4l2_device_unregister(&tr->v4l2_dev); + + return 0; +} + +static struct platform_driver timbradio_platform_driver = { + .driver = { + .name = DRIVER_NAME, + .owner = THIS_MODULE, + }, + .probe = timbradio_probe, + .remove = timbradio_remove, +}; + +module_platform_driver(timbradio_platform_driver); + +MODULE_DESCRIPTION("Timberdale Radio driver"); +MODULE_AUTHOR("Mocean Laboratories <info@mocean-labs.com>"); +MODULE_LICENSE("GPL v2"); +MODULE_VERSION("0.0.2"); +MODULE_ALIAS("platform:"DRIVER_NAME); diff --git a/drivers/media/radio/radio-trust.c b/drivers/media/radio/radio-trust.c new file mode 100644 index 0000000..c9a0ee2 --- /dev/null +++ b/drivers/media/radio/radio-trust.c @@ -0,0 +1,243 @@ +/* radio-trust.c - Trust FM Radio card driver for Linux 2.2 + * by Eric Lammerts <eric@scintilla.utwente.nl> + * + * Based on radio-aztech.c. Original notes: + * + * Adapted to support the Video for Linux API by + * Russell Kroll <rkroll@exploits.org>. Based on original tuner code by: + * + * Quay Ly + * Donald Song + * Jason Lewis (jlewis@twilight.vtc.vsc.edu) + * Scott McGrath (smcgrath@twilight.vtc.vsc.edu) + * William McGrath (wmcgrath@twilight.vtc.vsc.edu) + * + * Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org> + */ + +#include <stdarg.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/ioport.h> +#include <linux/videodev2.h> +#include <linux/io.h> +#include <linux/slab.h> +#include <media/v4l2-device.h> +#include <media/v4l2-ioctl.h> +#include "radio-isa.h" + +MODULE_AUTHOR("Eric Lammerts, Russell Kroll, Quay Lu, Donald Song, Jason Lewis, Scott McGrath, William McGrath"); +MODULE_DESCRIPTION("A driver for the Trust FM Radio card."); +MODULE_LICENSE("GPL"); +MODULE_VERSION("0.1.99"); + +/* acceptable ports: 0x350 (JP3 shorted), 0x358 (JP3 open) */ + +#ifndef CPTCFG_RADIO_TRUST_PORT +#define CPTCFG_RADIO_TRUST_PORT -1 +#endif + +#define TRUST_MAX 2 + +static int io[TRUST_MAX] = { [0] = CPTCFG_RADIO_TRUST_PORT, + [1 ... (TRUST_MAX - 1)] = -1 }; +static int radio_nr[TRUST_MAX] = { [0 ... (TRUST_MAX - 1)] = -1 }; + +module_param_array(io, int, NULL, 0444); +MODULE_PARM_DESC(io, "I/O addresses of the Trust FM Radio card (0x350 or 0x358)"); +module_param_array(radio_nr, int, NULL, 0444); +MODULE_PARM_DESC(radio_nr, "Radio device numbers"); + +struct trust { + struct radio_isa_card isa; + int ioval; +}; + +static struct radio_isa_card *trust_alloc(void) +{ + struct trust *tr = kzalloc(sizeof(*tr), GFP_KERNEL); + + return tr ? &tr->isa : NULL; +} + +/* i2c addresses */ +#define TDA7318_ADDR 0x88 +#define TSA6060T_ADDR 0xc4 + +#define TR_DELAY do { inb(tr->isa.io); inb(tr->isa.io); inb(tr->isa.io); } while (0) +#define TR_SET_SCL outb(tr->ioval |= 2, tr->isa.io) +#define TR_CLR_SCL outb(tr->ioval &= 0xfd, tr->isa.io) +#define TR_SET_SDA outb(tr->ioval |= 1, tr->isa.io) +#define TR_CLR_SDA outb(tr->ioval &= 0xfe, tr->isa.io) + +static void write_i2c(struct trust *tr, int n, ...) +{ + unsigned char val, mask; + va_list args; + + va_start(args, n); + + /* start condition */ + TR_SET_SDA; + TR_SET_SCL; + TR_DELAY; + TR_CLR_SDA; + TR_CLR_SCL; + TR_DELAY; + + for (; n; n--) { + val = va_arg(args, unsigned); + for (mask = 0x80; mask; mask >>= 1) { + if (val & mask) + TR_SET_SDA; + else + TR_CLR_SDA; + TR_SET_SCL; + TR_DELAY; + TR_CLR_SCL; + TR_DELAY; + } + /* acknowledge bit */ + TR_SET_SDA; + TR_SET_SCL; + TR_DELAY; + TR_CLR_SCL; + TR_DELAY; + } + + /* stop condition */ + TR_CLR_SDA; + TR_DELAY; + TR_SET_SCL; + TR_DELAY; + TR_SET_SDA; + TR_DELAY; + + va_end(args); +} + +static int trust_s_mute_volume(struct radio_isa_card *isa, bool mute, int vol) +{ + struct trust *tr = container_of(isa, struct trust, isa); + + tr->ioval = (tr->ioval & 0xf7) | (mute << 3); + outb(tr->ioval, isa->io); + write_i2c(tr, 2, TDA7318_ADDR, vol ^ 0x1f); + return 0; +} + +static int trust_s_stereo(struct radio_isa_card *isa, bool stereo) +{ + struct trust *tr = container_of(isa, struct trust, isa); + + tr->ioval = (tr->ioval & 0xfb) | (!stereo << 2); + outb(tr->ioval, isa->io); + return 0; +} + +static u32 trust_g_signal(struct radio_isa_card *isa) +{ + int i, v; + + for (i = 0, v = 0; i < 100; i++) + v |= inb(isa->io); + return (v & 1) ? 0 : 0xffff; +} + +static int trust_s_frequency(struct radio_isa_card *isa, u32 freq) +{ + struct trust *tr = container_of(isa, struct trust, isa); + + freq /= 160; /* Convert to 10 kHz units */ + freq += 1070; /* Add 10.7 MHz IF */ + write_i2c(tr, 5, TSA6060T_ADDR, (freq << 1) | 1, + freq >> 7, 0x60 | ((freq >> 15) & 1), 0); + return 0; +} + +static int basstreble2chip[15] = { + 0, 1, 2, 3, 4, 5, 6, 7, 14, 13, 12, 11, 10, 9, 8 +}; + +static int trust_s_ctrl(struct v4l2_ctrl *ctrl) +{ + struct radio_isa_card *isa = + container_of(ctrl->handler, struct radio_isa_card, hdl); + struct trust *tr = container_of(isa, struct trust, isa); + + switch (ctrl->id) { + case V4L2_CID_AUDIO_BASS: + write_i2c(tr, 2, TDA7318_ADDR, 0x60 | basstreble2chip[ctrl->val]); + return 0; + case V4L2_CID_AUDIO_TREBLE: + write_i2c(tr, 2, TDA7318_ADDR, 0x70 | basstreble2chip[ctrl->val]); + return 0; + } + return -EINVAL; +} + +static const struct v4l2_ctrl_ops trust_ctrl_ops = { + .s_ctrl = trust_s_ctrl, +}; + +static int trust_initialize(struct radio_isa_card *isa) +{ + struct trust *tr = container_of(isa, struct trust, isa); + + tr->ioval = 0xf; + write_i2c(tr, 2, TDA7318_ADDR, 0x80); /* speaker att. LF = 0 dB */ + write_i2c(tr, 2, TDA7318_ADDR, 0xa0); /* speaker att. RF = 0 dB */ + write_i2c(tr, 2, TDA7318_ADDR, 0xc0); /* speaker att. LR = 0 dB */ + write_i2c(tr, 2, TDA7318_ADDR, 0xe0); /* speaker att. RR = 0 dB */ + write_i2c(tr, 2, TDA7318_ADDR, 0x40); /* stereo 1 input, gain = 18.75 dB */ + + v4l2_ctrl_new_std(&isa->hdl, &trust_ctrl_ops, + V4L2_CID_AUDIO_BASS, 0, 15, 1, 8); + v4l2_ctrl_new_std(&isa->hdl, &trust_ctrl_ops, + V4L2_CID_AUDIO_TREBLE, 0, 15, 1, 8); + return isa->hdl.error; +} + +static const struct radio_isa_ops trust_ops = { + .init = trust_initialize, + .alloc = trust_alloc, + .s_mute_volume = trust_s_mute_volume, + .s_frequency = trust_s_frequency, + .s_stereo = trust_s_stereo, + .g_signal = trust_g_signal, +}; + +static const int trust_ioports[] = { 0x350, 0x358 }; + +static struct radio_isa_driver trust_driver = { + .driver = { + .match = radio_isa_match, + .probe = radio_isa_probe, + .remove = radio_isa_remove, + .driver = { + .name = "radio-trust", + }, + }, + .io_params = io, + .radio_nr_params = radio_nr, + .io_ports = trust_ioports, + .num_of_io_ports = ARRAY_SIZE(trust_ioports), + .region_size = 2, + .card = "Trust FM Radio", + .ops = &trust_ops, + .has_stereo = true, + .max_volume = 31, +}; + +static int __init trust_init(void) +{ + return isa_register_driver(&trust_driver.driver, TRUST_MAX); +} + +static void __exit trust_exit(void) +{ + isa_unregister_driver(&trust_driver.driver); +} + +module_init(trust_init); +module_exit(trust_exit); diff --git a/drivers/media/radio/radio-typhoon.c b/drivers/media/radio/radio-typhoon.c new file mode 100644 index 0000000..68f86b8 --- /dev/null +++ b/drivers/media/radio/radio-typhoon.c @@ -0,0 +1,180 @@ +/* Typhoon Radio Card driver for radio support + * (c) 1999 Dr. Henrik Seidel <Henrik.Seidel@gmx.de> + * + * Notes on the hardware + * + * This card has two output sockets, one for speakers and one for line. + * The speaker output has volume control, but only in four discrete + * steps. The line output has neither volume control nor mute. + * + * The card has auto-stereo according to its manual, although it all + * sounds mono to me (even with the Win/DOS drivers). Maybe it's my + * antenna - I really don't know for sure. + * + * Frequency control is done digitally. + * + * Volume control is done digitally, but there are only four different + * possible values. So you should better always turn the volume up and + * use line control. I got the best results by connecting line output + * to the sound card microphone input. For such a configuration the + * volume control has no effect, since volume control only influences + * the speaker output. + * + * There is no explicit mute/unmute. So I set the radio frequency to a + * value where I do expect just noise and turn the speaker volume down. + * The frequency change is necessary since the card never seems to be + * completely silent. + * + * Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org> + */ + +#include <linux/module.h> /* Modules */ +#include <linux/init.h> /* Initdata */ +#include <linux/ioport.h> /* request_region */ +#include <linux/videodev2.h> /* kernel radio structs */ +#include <linux/io.h> /* outb, outb_p */ +#include <linux/slab.h> +#include <media/v4l2-device.h> +#include <media/v4l2-ioctl.h> +#include "radio-isa.h" + +#define DRIVER_VERSION "0.1.2" + +MODULE_AUTHOR("Dr. Henrik Seidel"); +MODULE_DESCRIPTION("A driver for the Typhoon radio card (a.k.a. EcoRadio)."); +MODULE_LICENSE("GPL"); +MODULE_VERSION("0.1.99"); + +#ifndef CPTCFG_RADIO_TYPHOON_PORT +#define CPTCFG_RADIO_TYPHOON_PORT -1 +#endif + +#ifndef CPTCFG_RADIO_TYPHOON_MUTEFREQ +#define CPTCFG_RADIO_TYPHOON_MUTEFREQ 87000 +#endif + +#define TYPHOON_MAX 2 + +static int io[TYPHOON_MAX] = { [0] = CPTCFG_RADIO_TYPHOON_PORT, + [1 ... (TYPHOON_MAX - 1)] = -1 }; +static int radio_nr[TYPHOON_MAX] = { [0 ... (TYPHOON_MAX - 1)] = -1 }; +static unsigned long mutefreq = CPTCFG_RADIO_TYPHOON_MUTEFREQ; + +module_param_array(io, int, NULL, 0444); +MODULE_PARM_DESC(io, "I/O addresses of the Typhoon card (0x316 or 0x336)"); +module_param_array(radio_nr, int, NULL, 0444); +MODULE_PARM_DESC(radio_nr, "Radio device numbers"); +module_param(mutefreq, ulong, 0); +MODULE_PARM_DESC(mutefreq, "Frequency used when muting the card (in kHz)"); + +struct typhoon { + struct radio_isa_card isa; + int muted; +}; + +static struct radio_isa_card *typhoon_alloc(void) +{ + struct typhoon *ty = kzalloc(sizeof(*ty), GFP_KERNEL); + + return ty ? &ty->isa : NULL; +} + +static int typhoon_s_frequency(struct radio_isa_card *isa, u32 freq) +{ + unsigned long outval; + unsigned long x; + + /* + * The frequency transfer curve is not linear. The best fit I could + * get is + * + * outval = -155 + exp((f + 15.55) * 0.057)) + * + * where frequency f is in MHz. Since we don't have exp in the kernel, + * I approximate this function by a third order polynomial. + * + */ + + x = freq / 160; + outval = (x * x + 2500) / 5000; + outval = (outval * x + 5000) / 10000; + outval -= (10 * x * x + 10433) / 20866; + outval += 4 * x - 11505; + + outb_p((outval >> 8) & 0x01, isa->io + 4); + outb_p(outval >> 9, isa->io + 6); + outb_p(outval & 0xff, isa->io + 8); + return 0; +} + +static int typhoon_s_mute_volume(struct radio_isa_card *isa, bool mute, int vol) +{ + struct typhoon *ty = container_of(isa, struct typhoon, isa); + + if (mute) + vol = 0; + vol >>= 14; /* Map 16 bit to 2 bit */ + vol &= 3; + outb_p(vol / 2, isa->io); /* Set the volume, high bit. */ + outb_p(vol % 2, isa->io + 2); /* Set the volume, low bit. */ + + if (vol == 0 && !ty->muted) { + ty->muted = true; + return typhoon_s_frequency(isa, mutefreq << 4); + } + if (vol && ty->muted) { + ty->muted = false; + return typhoon_s_frequency(isa, isa->freq); + } + return 0; +} + +static const struct radio_isa_ops typhoon_ops = { + .alloc = typhoon_alloc, + .s_mute_volume = typhoon_s_mute_volume, + .s_frequency = typhoon_s_frequency, +}; + +static const int typhoon_ioports[] = { 0x316, 0x336 }; + +static struct radio_isa_driver typhoon_driver = { + .driver = { + .match = radio_isa_match, + .probe = radio_isa_probe, + .remove = radio_isa_remove, + .driver = { + .name = "radio-typhoon", + }, + }, + .io_params = io, + .radio_nr_params = radio_nr, + .io_ports = typhoon_ioports, + .num_of_io_ports = ARRAY_SIZE(typhoon_ioports), + .region_size = 8, + .card = "Typhoon Radio", + .ops = &typhoon_ops, + .has_stereo = true, + .max_volume = 3, +}; + +static int __init typhoon_init(void) +{ + if (mutefreq < 87000 || mutefreq > 108000) { + printk(KERN_ERR "%s: You must set a frequency (in kHz) used when muting the card,\n", + typhoon_driver.driver.driver.name); + printk(KERN_ERR "%s: e.g. with \"mutefreq=87500\" (87000 <= mutefreq <= 108000)\n", + typhoon_driver.driver.driver.name); + return -ENODEV; + } + return isa_register_driver(&typhoon_driver.driver, TYPHOON_MAX); +} + +static void __exit typhoon_exit(void) +{ + isa_unregister_driver(&typhoon_driver.driver); +} + + +module_init(typhoon_init); +module_exit(typhoon_exit); + diff --git a/drivers/media/radio/radio-wl1273.c b/drivers/media/radio/radio-wl1273.c new file mode 100644 index 0000000..97c2c18 --- /dev/null +++ b/drivers/media/radio/radio-wl1273.c @@ -0,0 +1,2160 @@ +/* + * Driver for the Texas Instruments WL1273 FM radio. + * + * Copyright (C) 2011 Nokia Corporation + * Author: Matti J. Aaltonen <matti.j.aaltonen@nokia.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include <linux/delay.h> +#include <linux/firmware.h> +#include <linux/interrupt.h> +#include <linux/mfd/wl1273-core.h> +#include <linux/slab.h> +#include <linux/module.h> +#include <media/v4l2-common.h> +#include <media/v4l2-ctrls.h> +#include <media/v4l2-device.h> +#include <media/v4l2-ioctl.h> + +#define DRIVER_DESC "Wl1273 FM Radio" + +#define WL1273_POWER_SET_OFF 0 +#define WL1273_POWER_SET_FM BIT(0) +#define WL1273_POWER_SET_RDS BIT(1) +#define WL1273_POWER_SET_RETENTION BIT(4) + +#define WL1273_PUPD_SET_OFF 0x00 +#define WL1273_PUPD_SET_ON 0x01 +#define WL1273_PUPD_SET_RETENTION 0x10 + +#define WL1273_FREQ(x) (x * 10000 / 625) +#define WL1273_INV_FREQ(x) (x * 625 / 10000) + +/* + * static int radio_nr - The number of the radio device + * + * The default is 0. + */ +static int radio_nr; +module_param(radio_nr, int, 0); +MODULE_PARM_DESC(radio_nr, "The number of the radio device. Default = 0"); + +struct wl1273_device { + char *bus_type; + + u8 forbidden; + unsigned int preemphasis; + unsigned int spacing; + unsigned int tx_power; + unsigned int rx_frequency; + unsigned int tx_frequency; + unsigned int rangelow; + unsigned int rangehigh; + unsigned int band; + bool stereo; + + /* RDS */ + unsigned int rds_on; + + wait_queue_head_t read_queue; + struct mutex lock; /* for serializing fm radio operations */ + struct completion busy; + + unsigned char *buffer; + unsigned int buf_size; + unsigned int rd_index; + unsigned int wr_index; + + /* Selected interrupts */ + u16 irq_flags; + u16 irq_received; + + struct v4l2_ctrl_handler ctrl_handler; + struct v4l2_device v4l2dev; + struct video_device videodev; + struct device *dev; + struct wl1273_core *core; + struct file *owner; + char *write_buf; + unsigned int rds_users; +}; + +#define WL1273_IRQ_MASK (WL1273_FR_EVENT | \ + WL1273_POW_ENB_EVENT) + +/* + * static unsigned int rds_buf - the number of RDS buffer blocks used. + * + * The default number is 100. + */ +static unsigned int rds_buf = 100; +module_param(rds_buf, uint, 0); +MODULE_PARM_DESC(rds_buf, "Number of RDS buffer entries. Default = 100"); + +static int wl1273_fm_write_fw(struct wl1273_core *core, + __u8 *fw, int len) +{ + struct i2c_client *client = core->client; + struct i2c_msg msg; + int i, r = 0; + + msg.addr = client->addr; + msg.flags = 0; + + for (i = 0; i <= len; i++) { + msg.len = fw[0]; + msg.buf = fw + 1; + + fw += msg.len + 1; + dev_dbg(&client->dev, "%s:len[%d]: %d\n", __func__, i, msg.len); + + r = i2c_transfer(client->adapter, &msg, 1); + if (r < 0 && i < len + 1) + break; + } + + dev_dbg(&client->dev, "%s: i: %d\n", __func__, i); + dev_dbg(&client->dev, "%s: len + 1: %d\n", __func__, len + 1); + + /* Last transfer always fails. */ + if (i == len || r == 1) + r = 0; + + return r; +} + +#define WL1273_FIFO_HAS_DATA(status) (1 << 5 & status) +#define WL1273_RDS_CORRECTABLE_ERROR (1 << 3) +#define WL1273_RDS_UNCORRECTABLE_ERROR (1 << 4) + +static int wl1273_fm_rds(struct wl1273_device *radio) +{ + struct wl1273_core *core = radio->core; + struct i2c_client *client = core->client; + u16 val; + u8 b0 = WL1273_RDS_DATA_GET, status; + struct v4l2_rds_data rds = { 0, 0, 0 }; + struct i2c_msg msg[] = { + { + .addr = client->addr, + .flags = 0, + .buf = &b0, + .len = 1, + }, + { + .addr = client->addr, + .flags = I2C_M_RD, + .buf = (u8 *) &rds, + .len = sizeof(rds), + } + }; + int r; + + if (core->mode != WL1273_MODE_RX) + return 0; + + r = core->read(core, WL1273_RDS_SYNC_GET, &val); + if (r) + return r; + + if ((val & 0x01) == 0) { + /* RDS decoder not synchronized */ + return -EAGAIN; + } + + /* copy all four RDS blocks to internal buffer */ + do { + r = i2c_transfer(client->adapter, msg, ARRAY_SIZE(msg)); + if (r != ARRAY_SIZE(msg)) { + dev_err(radio->dev, WL1273_FM_DRIVER_NAME + ": %s: read_rds error r == %i)\n", + __func__, r); + } + + status = rds.block; + + if (!WL1273_FIFO_HAS_DATA(status)) + break; + + /* copy bits 0-2 (the block ID) to bits 3-5 */ + rds.block = V4L2_RDS_BLOCK_MSK & status; + rds.block |= rds.block << 3; + + /* copy the error bits to standard positions */ + if (WL1273_RDS_UNCORRECTABLE_ERROR & status) { + rds.block |= V4L2_RDS_BLOCK_ERROR; + rds.block &= ~V4L2_RDS_BLOCK_CORRECTED; + } else if (WL1273_RDS_CORRECTABLE_ERROR & status) { + rds.block &= ~V4L2_RDS_BLOCK_ERROR; + rds.block |= V4L2_RDS_BLOCK_CORRECTED; + } + + /* copy RDS block to internal buffer */ + memcpy(&radio->buffer[radio->wr_index], &rds, RDS_BLOCK_SIZE); + radio->wr_index += 3; + + /* wrap write pointer */ + if (radio->wr_index >= radio->buf_size) + radio->wr_index = 0; + + /* check for overflow & start over */ + if (radio->wr_index == radio->rd_index) { + dev_dbg(radio->dev, "RDS OVERFLOW"); + + radio->rd_index = 0; + radio->wr_index = 0; + break; + } + } while (WL1273_FIFO_HAS_DATA(status)); + + /* wake up read queue */ + if (radio->wr_index != radio->rd_index) + wake_up_interruptible(&radio->read_queue); + + return 0; +} + +static irqreturn_t wl1273_fm_irq_thread_handler(int irq, void *dev_id) +{ + struct wl1273_device *radio = dev_id; + struct wl1273_core *core = radio->core; + u16 flags; + int r; + + r = core->read(core, WL1273_FLAG_GET, &flags); + if (r) + goto out; + + if (flags & WL1273_BL_EVENT) { + radio->irq_received = flags; + dev_dbg(radio->dev, "IRQ: BL\n"); + } + + if (flags & WL1273_RDS_EVENT) { + msleep(200); + + wl1273_fm_rds(radio); + } + + if (flags & WL1273_BBLK_EVENT) + dev_dbg(radio->dev, "IRQ: BBLK\n"); + + if (flags & WL1273_LSYNC_EVENT) + dev_dbg(radio->dev, "IRQ: LSYNC\n"); + + if (flags & WL1273_LEV_EVENT) { + u16 level; + + r = core->read(core, WL1273_RSSI_LVL_GET, &level); + if (r) + goto out; + + if (level > 14) + dev_dbg(radio->dev, "IRQ: LEV: 0x%x04\n", level); + } + + if (flags & WL1273_IFFR_EVENT) + dev_dbg(radio->dev, "IRQ: IFFR\n"); + + if (flags & WL1273_PI_EVENT) + dev_dbg(radio->dev, "IRQ: PI\n"); + + if (flags & WL1273_PD_EVENT) + dev_dbg(radio->dev, "IRQ: PD\n"); + + if (flags & WL1273_STIC_EVENT) + dev_dbg(radio->dev, "IRQ: STIC\n"); + + if (flags & WL1273_MAL_EVENT) + dev_dbg(radio->dev, "IRQ: MAL\n"); + + if (flags & WL1273_POW_ENB_EVENT) { + complete(&radio->busy); + dev_dbg(radio->dev, "NOT BUSY\n"); + dev_dbg(radio->dev, "IRQ: POW_ENB\n"); + } + + if (flags & WL1273_SCAN_OVER_EVENT) + dev_dbg(radio->dev, "IRQ: SCAN_OVER\n"); + + if (flags & WL1273_ERROR_EVENT) + dev_dbg(radio->dev, "IRQ: ERROR\n"); + + if (flags & WL1273_FR_EVENT) { + u16 freq; + + dev_dbg(radio->dev, "IRQ: FR:\n"); + + if (core->mode == WL1273_MODE_RX) { + r = core->write(core, WL1273_TUNER_MODE_SET, + TUNER_MODE_STOP_SEARCH); + if (r) { + dev_err(radio->dev, + "%s: TUNER_MODE_SET fails: %d\n", + __func__, r); + goto out; + } + + r = core->read(core, WL1273_FREQ_SET, &freq); + if (r) + goto out; + + if (radio->band == WL1273_BAND_JAPAN) + radio->rx_frequency = WL1273_BAND_JAPAN_LOW + + freq * 50; + else + radio->rx_frequency = WL1273_BAND_OTHER_LOW + + freq * 50; + /* + * The driver works better with this msleep, + * the documentation doesn't mention it. + */ + usleep_range(10000, 15000); + + dev_dbg(radio->dev, "%dkHz\n", radio->rx_frequency); + + } else { + r = core->read(core, WL1273_CHANL_SET, &freq); + if (r) + goto out; + + dev_dbg(radio->dev, "%dkHz\n", freq); + } + dev_dbg(radio->dev, "%s: NOT BUSY\n", __func__); + } + +out: + core->write(core, WL1273_INT_MASK_SET, radio->irq_flags); + complete(&radio->busy); + + return IRQ_HANDLED; +} + +static int wl1273_fm_set_tx_freq(struct wl1273_device *radio, unsigned int freq) +{ + struct wl1273_core *core = radio->core; + int r = 0; + + if (freq < WL1273_BAND_TX_LOW) { + dev_err(radio->dev, + "Frequency out of range: %d < %d\n", freq, + WL1273_BAND_TX_LOW); + return -ERANGE; + } + + if (freq > WL1273_BAND_TX_HIGH) { + dev_err(radio->dev, + "Frequency out of range: %d > %d\n", freq, + WL1273_BAND_TX_HIGH); + return -ERANGE; + } + + /* + * The driver works better with this sleep, + * the documentation doesn't mention it. + */ + usleep_range(5000, 10000); + + dev_dbg(radio->dev, "%s: freq: %d kHz\n", __func__, freq); + + /* Set the current tx channel */ + r = core->write(core, WL1273_CHANL_SET, freq / 10); + if (r) + return r; + + INIT_COMPLETION(radio->busy); + + /* wait for the FR IRQ */ + r = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(2000)); + if (!r) + return -ETIMEDOUT; + + dev_dbg(radio->dev, "WL1273_CHANL_SET: %d\n", r); + + /* Enable the output power */ + r = core->write(core, WL1273_POWER_ENB_SET, 1); + if (r) + return r; + + INIT_COMPLETION(radio->busy); + + /* wait for the POWER_ENB IRQ */ + r = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000)); + if (!r) + return -ETIMEDOUT; + + radio->tx_frequency = freq; + dev_dbg(radio->dev, "WL1273_POWER_ENB_SET: %d\n", r); + + return 0; +} + +static int wl1273_fm_set_rx_freq(struct wl1273_device *radio, unsigned int freq) +{ + struct wl1273_core *core = radio->core; + int r, f; + + if (freq < radio->rangelow) { + dev_err(radio->dev, + "Frequency out of range: %d < %d\n", freq, + radio->rangelow); + r = -ERANGE; + goto err; + } + + if (freq > radio->rangehigh) { + dev_err(radio->dev, + "Frequency out of range: %d > %d\n", freq, + radio->rangehigh); + r = -ERANGE; + goto err; + } + + dev_dbg(radio->dev, "%s: %dkHz\n", __func__, freq); + + core->write(core, WL1273_INT_MASK_SET, radio->irq_flags); + + if (radio->band == WL1273_BAND_JAPAN) + f = (freq - WL1273_BAND_JAPAN_LOW) / 50; + else + f = (freq - WL1273_BAND_OTHER_LOW) / 50; + + r = core->write(core, WL1273_FREQ_SET, f); + if (r) { + dev_err(radio->dev, "FREQ_SET fails\n"); + goto err; + } + + r = core->write(core, WL1273_TUNER_MODE_SET, TUNER_MODE_PRESET); + if (r) { + dev_err(radio->dev, "TUNER_MODE_SET fails\n"); + goto err; + } + + INIT_COMPLETION(radio->busy); + + r = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(2000)); + if (!r) { + dev_err(radio->dev, "%s: TIMEOUT\n", __func__); + return -ETIMEDOUT; + } + + radio->rd_index = 0; + radio->wr_index = 0; + radio->rx_frequency = freq; + return 0; +err: + return r; +} + +static int wl1273_fm_get_freq(struct wl1273_device *radio) +{ + struct wl1273_core *core = radio->core; + unsigned int freq; + u16 f; + int r; + + if (core->mode == WL1273_MODE_RX) { + r = core->read(core, WL1273_FREQ_SET, &f); + if (r) + return r; + + dev_dbg(radio->dev, "Freq get: 0x%04x\n", f); + if (radio->band == WL1273_BAND_JAPAN) + freq = WL1273_BAND_JAPAN_LOW + 50 * f; + else + freq = WL1273_BAND_OTHER_LOW + 50 * f; + } else { + r = core->read(core, WL1273_CHANL_SET, &f); + if (r) + return r; + + freq = f * 10; + } + + return freq; +} + +/** + * wl1273_fm_upload_firmware_patch() - Upload the firmware. + * @radio: A pointer to the device struct. + * + * The firmware file consists of arrays of bytes where the first byte + * gives the array length. The first byte in the file gives the + * number of these arrays. + */ +static int wl1273_fm_upload_firmware_patch(struct wl1273_device *radio) +{ + struct wl1273_core *core = radio->core; + unsigned int packet_num; + const struct firmware *fw_p; + const char *fw_name = "radio-wl1273-fw.bin"; + struct device *dev = radio->dev; + __u8 *ptr; + int r; + + dev_dbg(dev, "%s:\n", __func__); + + /* + * Uploading the firmware patch is not always necessary, + * so we only print an info message. + */ + if (request_firmware(&fw_p, fw_name, dev)) { + dev_info(dev, "%s - %s not found\n", __func__, fw_name); + + return 0; + } + + ptr = (__u8 *) fw_p->data; + packet_num = ptr[0]; + dev_dbg(dev, "%s: packets: %d\n", __func__, packet_num); + + r = wl1273_fm_write_fw(core, ptr + 1, packet_num); + if (r) { + dev_err(dev, "FW upload error: %d\n", r); + goto out; + } + + /* ignore possible error here */ + core->write(core, WL1273_RESET, 0); + + dev_dbg(dev, "%s - download OK, r: %d\n", __func__, r); +out: + release_firmware(fw_p); + return r; +} + +static int wl1273_fm_stop(struct wl1273_device *radio) +{ + struct wl1273_core *core = radio->core; + + if (core->mode == WL1273_MODE_RX) { + int r = core->write(core, WL1273_POWER_SET, + WL1273_POWER_SET_OFF); + if (r) + dev_err(radio->dev, "%s: POWER_SET fails: %d\n", + __func__, r); + } else if (core->mode == WL1273_MODE_TX) { + int r = core->write(core, WL1273_PUPD_SET, + WL1273_PUPD_SET_OFF); + if (r) + dev_err(radio->dev, + "%s: PUPD_SET fails: %d\n", __func__, r); + } + + if (core->pdata->disable) { + core->pdata->disable(); + dev_dbg(radio->dev, "Back to reset\n"); + } + + return 0; +} + +static int wl1273_fm_start(struct wl1273_device *radio, int new_mode) +{ + struct wl1273_core *core = radio->core; + struct wl1273_fm_platform_data *pdata = core->pdata; + struct device *dev = radio->dev; + int r = -EINVAL; + + if (pdata->enable && core->mode == WL1273_MODE_OFF) { + dev_dbg(radio->dev, "Out of reset\n"); + + pdata->enable(); + msleep(250); + } + + if (new_mode == WL1273_MODE_RX) { + u16 val = WL1273_POWER_SET_FM; + + if (radio->rds_on) + val |= WL1273_POWER_SET_RDS; + + /* If this fails try again */ + r = core->write(core, WL1273_POWER_SET, val); + if (r) { + msleep(100); + + r = core->write(core, WL1273_POWER_SET, val); + if (r) { + dev_err(dev, "%s: POWER_SET fails\n", __func__); + goto fail; + } + } + + /* rds buffer configuration */ + radio->wr_index = 0; + radio->rd_index = 0; + + } else if (new_mode == WL1273_MODE_TX) { + /* If this fails try again once */ + r = core->write(core, WL1273_PUPD_SET, WL1273_PUPD_SET_ON); + if (r) { + msleep(100); + r = core->write(core, WL1273_PUPD_SET, + WL1273_PUPD_SET_ON); + if (r) { + dev_err(dev, "%s: PUPD_SET fails\n", __func__); + goto fail; + } + } + + if (radio->rds_on) + r = core->write(core, WL1273_RDS_DATA_ENB, 1); + else + r = core->write(core, WL1273_RDS_DATA_ENB, 0); + } else { + dev_warn(dev, "%s: Illegal mode.\n", __func__); + } + + if (core->mode == WL1273_MODE_OFF) { + r = wl1273_fm_upload_firmware_patch(radio); + if (r) + dev_warn(dev, "Firmware upload failed.\n"); + + /* + * Sometimes the chip is in a wrong power state at this point. + * So we set the power once again. + */ + if (new_mode == WL1273_MODE_RX) { + u16 val = WL1273_POWER_SET_FM; + + if (radio->rds_on) + val |= WL1273_POWER_SET_RDS; + + r = core->write(core, WL1273_POWER_SET, val); + if (r) { + dev_err(dev, "%s: POWER_SET fails\n", __func__); + goto fail; + } + } else if (new_mode == WL1273_MODE_TX) { + r = core->write(core, WL1273_PUPD_SET, + WL1273_PUPD_SET_ON); + if (r) { + dev_err(dev, "%s: PUPD_SET fails\n", __func__); + goto fail; + } + } + } + + return 0; +fail: + if (pdata->disable) + pdata->disable(); + + dev_dbg(dev, "%s: return: %d\n", __func__, r); + return r; +} + +static int wl1273_fm_suspend(struct wl1273_device *radio) +{ + struct wl1273_core *core = radio->core; + int r = 0; + + /* Cannot go from OFF to SUSPENDED */ + if (core->mode == WL1273_MODE_RX) + r = core->write(core, WL1273_POWER_SET, + WL1273_POWER_SET_RETENTION); + else if (core->mode == WL1273_MODE_TX) + r = core->write(core, WL1273_PUPD_SET, + WL1273_PUPD_SET_RETENTION); + else + r = -EINVAL; + + if (r) { + dev_err(radio->dev, "%s: POWER_SET fails: %d\n", __func__, r); + goto out; + } + +out: + return r; +} + +static int wl1273_fm_set_mode(struct wl1273_device *radio, int mode) +{ + struct wl1273_core *core = radio->core; + struct device *dev = radio->dev; + int old_mode; + int r; + + dev_dbg(dev, "%s\n", __func__); + dev_dbg(dev, "Forbidden modes: 0x%02x\n", radio->forbidden); + + old_mode = core->mode; + if (mode & radio->forbidden) { + r = -EPERM; + goto out; + } + + switch (mode) { + case WL1273_MODE_RX: + case WL1273_MODE_TX: + r = wl1273_fm_start(radio, mode); + if (r) { + dev_err(dev, "%s: Cannot start.\n", __func__); + wl1273_fm_stop(radio); + goto out; + } + + core->mode = mode; + r = core->write(core, WL1273_INT_MASK_SET, radio->irq_flags); + if (r) { + dev_err(dev, "INT_MASK_SET fails.\n"); + goto out; + } + + /* remember previous settings */ + if (mode == WL1273_MODE_RX) { + r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency); + if (r) { + dev_err(dev, "set freq fails: %d.\n", r); + goto out; + } + + r = core->set_volume(core, core->volume); + if (r) { + dev_err(dev, "set volume fails: %d.\n", r); + goto out; + } + + dev_dbg(dev, "%s: Set vol: %d.\n", __func__, + core->volume); + } else { + r = wl1273_fm_set_tx_freq(radio, radio->tx_frequency); + if (r) { + dev_err(dev, "set freq fails: %d.\n", r); + goto out; + } + } + + dev_dbg(radio->dev, "%s: Set audio mode.\n", __func__); + + r = core->set_audio(core, core->audio_mode); + if (r) + dev_err(dev, "Cannot set audio mode.\n"); + break; + + case WL1273_MODE_OFF: + r = wl1273_fm_stop(radio); + if (r) + dev_err(dev, "%s: Off fails: %d\n", __func__, r); + else + core->mode = WL1273_MODE_OFF; + + break; + + case WL1273_MODE_SUSPENDED: + r = wl1273_fm_suspend(radio); + if (r) + dev_err(dev, "%s: Suspend fails: %d\n", __func__, r); + else + core->mode = WL1273_MODE_SUSPENDED; + + break; + + default: + dev_err(dev, "%s: Unknown mode: %d\n", __func__, mode); + r = -EINVAL; + break; + } +out: + if (r) + core->mode = old_mode; + + return r; +} + +static int wl1273_fm_set_seek(struct wl1273_device *radio, + unsigned int wrap_around, + unsigned int seek_upward, + int level) +{ + struct wl1273_core *core = radio->core; + int r = 0; + unsigned int dir = (seek_upward == 0) ? 0 : 1; + unsigned int f; + + f = radio->rx_frequency; + dev_dbg(radio->dev, "rx_frequency: %d\n", f); + + if (dir && f + radio->spacing <= radio->rangehigh) + r = wl1273_fm_set_rx_freq(radio, f + radio->spacing); + else if (dir && wrap_around) + r = wl1273_fm_set_rx_freq(radio, radio->rangelow); + else if (f - radio->spacing >= radio->rangelow) + r = wl1273_fm_set_rx_freq(radio, f - radio->spacing); + else if (wrap_around) + r = wl1273_fm_set_rx_freq(radio, radio->rangehigh); + + if (r) + goto out; + + if (level < SCHAR_MIN || level > SCHAR_MAX) + return -EINVAL; + + INIT_COMPLETION(radio->busy); + dev_dbg(radio->dev, "%s: BUSY\n", __func__); + + r = core->write(core, WL1273_INT_MASK_SET, radio->irq_flags); + if (r) + goto out; + + dev_dbg(radio->dev, "%s\n", __func__); + + r = core->write(core, WL1273_SEARCH_LVL_SET, level); + if (r) + goto out; + + r = core->write(core, WL1273_SEARCH_DIR_SET, dir); + if (r) + goto out; + + r = core->write(core, WL1273_TUNER_MODE_SET, TUNER_MODE_AUTO_SEEK); + if (r) + goto out; + + wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000)); + if (!(radio->irq_received & WL1273_BL_EVENT)) + goto out; + + radio->irq_received &= ~WL1273_BL_EVENT; + + if (!wrap_around) + goto out; + + /* Wrap around */ + dev_dbg(radio->dev, "Wrap around in HW seek.\n"); + + if (seek_upward) + f = radio->rangelow; + else + f = radio->rangehigh; + + r = wl1273_fm_set_rx_freq(radio, f); + if (r) + goto out; + + INIT_COMPLETION(radio->busy); + dev_dbg(radio->dev, "%s: BUSY\n", __func__); + + r = core->write(core, WL1273_TUNER_MODE_SET, TUNER_MODE_AUTO_SEEK); + if (r) + goto out; + + wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000)); +out: + dev_dbg(radio->dev, "%s: Err: %d\n", __func__, r); + return r; +} + +/** + * wl1273_fm_get_tx_ctune() - Get the TX tuning capacitor value. + * @radio: A pointer to the device struct. + */ +static unsigned int wl1273_fm_get_tx_ctune(struct wl1273_device *radio) +{ + struct wl1273_core *core = radio->core; + struct device *dev = radio->dev; + u16 val; + int r; + + if (core->mode == WL1273_MODE_OFF || + core->mode == WL1273_MODE_SUSPENDED) + return -EPERM; + + r = core->read(core, WL1273_READ_FMANT_TUNE_VALUE, &val); + if (r) { + dev_err(dev, "%s: read error: %d\n", __func__, r); + goto out; + } + +out: + return val; +} + +/** + * wl1273_fm_set_preemphasis() - Set the TX pre-emphasis value. + * @radio: A pointer to the device struct. + * @preemphasis: The new pre-amphasis value. + * + * Possible pre-emphasis values are: V4L2_PREEMPHASIS_DISABLED, + * V4L2_PREEMPHASIS_50_uS and V4L2_PREEMPHASIS_75_uS. + */ +static int wl1273_fm_set_preemphasis(struct wl1273_device *radio, + unsigned int preemphasis) +{ + struct wl1273_core *core = radio->core; + int r; + u16 em; + + if (core->mode == WL1273_MODE_OFF || + core->mode == WL1273_MODE_SUSPENDED) + return -EPERM; + + mutex_lock(&core->lock); + + switch (preemphasis) { + case V4L2_PREEMPHASIS_DISABLED: + em = 1; + break; + case V4L2_PREEMPHASIS_50_uS: + em = 0; + break; + case V4L2_PREEMPHASIS_75_uS: + em = 2; + break; + default: + r = -EINVAL; + goto out; + } + + r = core->write(core, WL1273_PREMPH_SET, em); + if (r) + goto out; + + radio->preemphasis = preemphasis; + +out: + mutex_unlock(&core->lock); + return r; +} + +static int wl1273_fm_rds_on(struct wl1273_device *radio) +{ + struct wl1273_core *core = radio->core; + int r; + + dev_dbg(radio->dev, "%s\n", __func__); + if (radio->rds_on) + return 0; + + r = core->write(core, WL1273_POWER_SET, + WL1273_POWER_SET_FM | WL1273_POWER_SET_RDS); + if (r) + goto out; + + r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency); + if (r) + dev_err(radio->dev, "set freq fails: %d.\n", r); +out: + return r; +} + +static int wl1273_fm_rds_off(struct wl1273_device *radio) +{ + struct wl1273_core *core = radio->core; + int r; + + if (!radio->rds_on) + return 0; + + radio->irq_flags &= ~WL1273_RDS_EVENT; + + r = core->write(core, WL1273_INT_MASK_SET, radio->irq_flags); + if (r) + goto out; + + /* Service pending read */ + wake_up_interruptible(&radio->read_queue); + + dev_dbg(radio->dev, "%s\n", __func__); + + r = core->write(core, WL1273_POWER_SET, WL1273_POWER_SET_FM); + if (r) + goto out; + + r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency); + if (r) + dev_err(radio->dev, "set freq fails: %d.\n", r); +out: + dev_dbg(radio->dev, "%s: exiting...\n", __func__); + + return r; +} + +static int wl1273_fm_set_rds(struct wl1273_device *radio, unsigned int new_mode) +{ + int r = 0; + struct wl1273_core *core = radio->core; + + if (core->mode == WL1273_MODE_OFF || + core->mode == WL1273_MODE_SUSPENDED) + return -EPERM; + + if (new_mode == WL1273_RDS_RESET) { + r = core->write(core, WL1273_RDS_CNTRL_SET, 1); + return r; + } + + if (core->mode == WL1273_MODE_TX && new_mode == WL1273_RDS_OFF) { + r = core->write(core, WL1273_RDS_DATA_ENB, 0); + } else if (core->mode == WL1273_MODE_TX && new_mode == WL1273_RDS_ON) { + r = core->write(core, WL1273_RDS_DATA_ENB, 1); + } else if (core->mode == WL1273_MODE_RX && new_mode == WL1273_RDS_OFF) { + r = wl1273_fm_rds_off(radio); + } else if (core->mode == WL1273_MODE_RX && new_mode == WL1273_RDS_ON) { + r = wl1273_fm_rds_on(radio); + } else { + dev_err(radio->dev, "%s: Unknown mode: %d\n", + __func__, new_mode); + r = -EINVAL; + } + + if (!r) + radio->rds_on = (new_mode == WL1273_RDS_ON) ? true : false; + + return r; +} + +static ssize_t wl1273_fm_fops_write(struct file *file, const char __user *buf, + size_t count, loff_t *ppos) +{ + struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); + struct wl1273_core *core = radio->core; + u16 val; + int r; + + dev_dbg(radio->dev, "%s\n", __func__); + + if (core->mode != WL1273_MODE_TX) + return count; + + if (radio->rds_users == 0) { + dev_warn(radio->dev, "%s: RDS not on.\n", __func__); + return 0; + } + + if (mutex_lock_interruptible(&core->lock)) + return -EINTR; + /* + * Multiple processes can open the device, but only + * one gets to write to it. + */ + if (radio->owner && radio->owner != file) { + r = -EBUSY; + goto out; + } + radio->owner = file; + + /* Manual Mode */ + if (count > 255) + val = 255; + else + val = count; + + core->write(core, WL1273_RDS_CONFIG_DATA_SET, val); + + if (copy_from_user(radio->write_buf + 1, buf, val)) { + r = -EFAULT; + goto out; + } + + dev_dbg(radio->dev, "Count: %d\n", val); + dev_dbg(radio->dev, "From user: \"%s\"\n", radio->write_buf); + + radio->write_buf[0] = WL1273_RDS_DATA_SET; + core->write_data(core, radio->write_buf, val + 1); + + r = val; +out: + mutex_unlock(&core->lock); + + return r; +} + +static unsigned int wl1273_fm_fops_poll(struct file *file, + struct poll_table_struct *pts) +{ + struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); + struct wl1273_core *core = radio->core; + + if (radio->owner && radio->owner != file) + return -EBUSY; + + radio->owner = file; + + if (core->mode == WL1273_MODE_RX) { + poll_wait(file, &radio->read_queue, pts); + + if (radio->rd_index != radio->wr_index) + return POLLIN | POLLRDNORM; + + } else if (core->mode == WL1273_MODE_TX) { + return POLLOUT | POLLWRNORM; + } + + return 0; +} + +static int wl1273_fm_fops_open(struct file *file) +{ + struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); + struct wl1273_core *core = radio->core; + int r = 0; + + dev_dbg(radio->dev, "%s\n", __func__); + + if (core->mode == WL1273_MODE_RX && radio->rds_on && + !radio->rds_users) { + dev_dbg(radio->dev, "%s: Mode: %d\n", __func__, core->mode); + + if (mutex_lock_interruptible(&core->lock)) + return -EINTR; + + radio->irq_flags |= WL1273_RDS_EVENT; + + r = core->write(core, WL1273_INT_MASK_SET, + radio->irq_flags); + if (r) { + mutex_unlock(&core->lock); + goto out; + } + + radio->rds_users++; + + mutex_unlock(&core->lock); + } +out: + return r; +} + +static int wl1273_fm_fops_release(struct file *file) +{ + struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); + struct wl1273_core *core = radio->core; + int r = 0; + + dev_dbg(radio->dev, "%s\n", __func__); + + if (radio->rds_users > 0) { + radio->rds_users--; + if (radio->rds_users == 0) { + if (mutex_lock_interruptible(&core->lock)) + return -EINTR; + + radio->irq_flags &= ~WL1273_RDS_EVENT; + + if (core->mode == WL1273_MODE_RX) { + r = core->write(core, + WL1273_INT_MASK_SET, + radio->irq_flags); + if (r) { + mutex_unlock(&core->lock); + goto out; + } + } + mutex_unlock(&core->lock); + } + } + + if (file == radio->owner) + radio->owner = NULL; +out: + return r; +} + +static ssize_t wl1273_fm_fops_read(struct file *file, char __user *buf, + size_t count, loff_t *ppos) +{ + int r = 0; + struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); + struct wl1273_core *core = radio->core; + unsigned int block_count = 0; + u16 val; + + dev_dbg(radio->dev, "%s\n", __func__); + + if (core->mode != WL1273_MODE_RX) + return 0; + + if (radio->rds_users == 0) { + dev_warn(radio->dev, "%s: RDS not on.\n", __func__); + return 0; + } + + if (mutex_lock_interruptible(&core->lock)) + return -EINTR; + + /* + * Multiple processes can open the device, but only + * one at a time gets read access. + */ + if (radio->owner && radio->owner != file) { + r = -EBUSY; + goto out; + } + radio->owner = file; + + r = core->read(core, WL1273_RDS_SYNC_GET, &val); + if (r) { + dev_err(radio->dev, "%s: Get RDS_SYNC fails.\n", __func__); + goto out; + } else if (val == 0) { + dev_info(radio->dev, "RDS_SYNC: Not synchronized\n"); + r = -ENODATA; + goto out; + } + + /* block if no new data available */ + while (radio->wr_index == radio->rd_index) { + if (file->f_flags & O_NONBLOCK) { + r = -EWOULDBLOCK; + goto out; + } + + dev_dbg(radio->dev, "%s: Wait for RDS data.\n", __func__); + if (wait_event_interruptible(radio->read_queue, + radio->wr_index != + radio->rd_index) < 0) { + r = -EINTR; + goto out; + } + } + + /* calculate block count from byte count */ + count /= RDS_BLOCK_SIZE; + + /* copy RDS blocks from the internal buffer and to user buffer */ + while (block_count < count) { + if (radio->rd_index == radio->wr_index) + break; + + /* always transfer complete RDS blocks */ + if (copy_to_user(buf, &radio->buffer[radio->rd_index], + RDS_BLOCK_SIZE)) + break; + + /* increment and wrap the read pointer */ + radio->rd_index += RDS_BLOCK_SIZE; + if (radio->rd_index >= radio->buf_size) + radio->rd_index = 0; + + /* increment counters */ + block_count++; + buf += RDS_BLOCK_SIZE; + r += RDS_BLOCK_SIZE; + } + +out: + dev_dbg(radio->dev, "%s: exit\n", __func__); + mutex_unlock(&core->lock); + + return r; +} + +static const struct v4l2_file_operations wl1273_fops = { + .owner = THIS_MODULE, + .read = wl1273_fm_fops_read, + .write = wl1273_fm_fops_write, + .poll = wl1273_fm_fops_poll, + .unlocked_ioctl = video_ioctl2, + .open = wl1273_fm_fops_open, + .release = wl1273_fm_fops_release, +}; + +static int wl1273_fm_vidioc_querycap(struct file *file, void *priv, + struct v4l2_capability *capability) +{ + struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); + + dev_dbg(radio->dev, "%s\n", __func__); + + strlcpy(capability->driver, WL1273_FM_DRIVER_NAME, + sizeof(capability->driver)); + strlcpy(capability->card, "Texas Instruments Wl1273 FM Radio", + sizeof(capability->card)); + strlcpy(capability->bus_info, radio->bus_type, + sizeof(capability->bus_info)); + + capability->capabilities = V4L2_CAP_HW_FREQ_SEEK | + V4L2_CAP_TUNER | V4L2_CAP_RADIO | V4L2_CAP_AUDIO | + V4L2_CAP_RDS_CAPTURE | V4L2_CAP_MODULATOR | + V4L2_CAP_RDS_OUTPUT; + + return 0; +} + +static int wl1273_fm_vidioc_g_input(struct file *file, void *priv, + unsigned int *i) +{ + struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); + + dev_dbg(radio->dev, "%s\n", __func__); + + *i = 0; + + return 0; +} + +static int wl1273_fm_vidioc_s_input(struct file *file, void *priv, + unsigned int i) +{ + struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); + + dev_dbg(radio->dev, "%s\n", __func__); + + if (i != 0) + return -EINVAL; + + return 0; +} + +/** + * wl1273_fm_set_tx_power() - Set the transmission power value. + * @core: A pointer to the device struct. + * @power: The new power value. + */ +static int wl1273_fm_set_tx_power(struct wl1273_device *radio, u16 power) +{ + struct wl1273_core *core = radio->core; + int r; + + if (core->mode == WL1273_MODE_OFF || + core->mode == WL1273_MODE_SUSPENDED) + return -EPERM; + + mutex_lock(&core->lock); + + /* Convert the dBuV value to chip presentation */ + r = core->write(core, WL1273_POWER_LEV_SET, 122 - power); + if (r) + goto out; + + radio->tx_power = power; + +out: + mutex_unlock(&core->lock); + return r; +} + +#define WL1273_SPACING_50kHz 1 +#define WL1273_SPACING_100kHz 2 +#define WL1273_SPACING_200kHz 4 + +static int wl1273_fm_tx_set_spacing(struct wl1273_device *radio, + unsigned int spacing) +{ + struct wl1273_core *core = radio->core; + int r; + + if (spacing == 0) { + r = core->write(core, WL1273_SCAN_SPACING_SET, + WL1273_SPACING_100kHz); + radio->spacing = 100; + } else if (spacing - 50000 < 25000) { + r = core->write(core, WL1273_SCAN_SPACING_SET, + WL1273_SPACING_50kHz); + radio->spacing = 50; + } else if (spacing - 100000 < 50000) { + r = core->write(core, WL1273_SCAN_SPACING_SET, + WL1273_SPACING_100kHz); + radio->spacing = 100; + } else { + r = core->write(core, WL1273_SCAN_SPACING_SET, + WL1273_SPACING_200kHz); + radio->spacing = 200; + } + + return r; +} + +static int wl1273_fm_g_volatile_ctrl(struct v4l2_ctrl *ctrl) +{ + struct wl1273_device *radio = ctrl->priv; + struct wl1273_core *core = radio->core; + + dev_dbg(radio->dev, "%s\n", __func__); + + if (mutex_lock_interruptible(&core->lock)) + return -EINTR; + + switch (ctrl->id) { + case V4L2_CID_TUNE_ANTENNA_CAPACITOR: + ctrl->val = wl1273_fm_get_tx_ctune(radio); + break; + + default: + dev_warn(radio->dev, "%s: Unknown IOCTL: %d\n", + __func__, ctrl->id); + break; + } + + mutex_unlock(&core->lock); + + return 0; +} + +#define WL1273_MUTE_SOFT_ENABLE (1 << 0) +#define WL1273_MUTE_AC (1 << 1) +#define WL1273_MUTE_HARD_LEFT (1 << 2) +#define WL1273_MUTE_HARD_RIGHT (1 << 3) +#define WL1273_MUTE_SOFT_FORCE (1 << 4) + +static inline struct wl1273_device *to_radio(struct v4l2_ctrl *ctrl) +{ + return container_of(ctrl->handler, struct wl1273_device, ctrl_handler); +} + +static int wl1273_fm_vidioc_s_ctrl(struct v4l2_ctrl *ctrl) +{ + struct wl1273_device *radio = to_radio(ctrl); + struct wl1273_core *core = radio->core; + int r = 0; + + dev_dbg(radio->dev, "%s\n", __func__); + + switch (ctrl->id) { + case V4L2_CID_AUDIO_MUTE: + if (mutex_lock_interruptible(&core->lock)) + return -EINTR; + + if (core->mode == WL1273_MODE_RX && ctrl->val) + r = core->write(core, + WL1273_MUTE_STATUS_SET, + WL1273_MUTE_HARD_LEFT | + WL1273_MUTE_HARD_RIGHT); + else if (core->mode == WL1273_MODE_RX) + r = core->write(core, + WL1273_MUTE_STATUS_SET, 0x0); + else if (core->mode == WL1273_MODE_TX && ctrl->val) + r = core->write(core, WL1273_MUTE, 1); + else if (core->mode == WL1273_MODE_TX) + r = core->write(core, WL1273_MUTE, 0); + + mutex_unlock(&core->lock); + break; + + case V4L2_CID_AUDIO_VOLUME: + if (ctrl->val == 0) + r = wl1273_fm_set_mode(radio, WL1273_MODE_OFF); + else + r = core->set_volume(core, core->volume); + break; + + case V4L2_CID_TUNE_PREEMPHASIS: + r = wl1273_fm_set_preemphasis(radio, ctrl->val); + break; + + case V4L2_CID_TUNE_POWER_LEVEL: + r = wl1273_fm_set_tx_power(radio, ctrl->val); + break; + + default: + dev_warn(radio->dev, "%s: Unknown IOCTL: %d\n", + __func__, ctrl->id); + break; + } + + dev_dbg(radio->dev, "%s\n", __func__); + return r; +} + +static int wl1273_fm_vidioc_g_audio(struct file *file, void *priv, + struct v4l2_audio *audio) +{ + struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); + + dev_dbg(radio->dev, "%s\n", __func__); + + if (audio->index > 1) + return -EINVAL; + + strlcpy(audio->name, "Radio", sizeof(audio->name)); + audio->capability = V4L2_AUDCAP_STEREO; + + return 0; +} + +static int wl1273_fm_vidioc_s_audio(struct file *file, void *priv, + const struct v4l2_audio *audio) +{ + struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); + + dev_dbg(radio->dev, "%s\n", __func__); + + if (audio->index != 0) + return -EINVAL; + + return 0; +} + +#define WL1273_RDS_NOT_SYNCHRONIZED 0 +#define WL1273_RDS_SYNCHRONIZED 1 + +static int wl1273_fm_vidioc_g_tuner(struct file *file, void *priv, + struct v4l2_tuner *tuner) +{ + struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); + struct wl1273_core *core = radio->core; + u16 val; + int r; + + dev_dbg(radio->dev, "%s\n", __func__); + + if (tuner->index > 0) + return -EINVAL; + + strlcpy(tuner->name, WL1273_FM_DRIVER_NAME, sizeof(tuner->name)); + tuner->type = V4L2_TUNER_RADIO; + + tuner->rangelow = WL1273_FREQ(WL1273_BAND_JAPAN_LOW); + tuner->rangehigh = WL1273_FREQ(WL1273_BAND_OTHER_HIGH); + + tuner->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_RDS | + V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS_BLOCK_IO | + V4L2_TUNER_CAP_HWSEEK_BOUNDED | V4L2_TUNER_CAP_HWSEEK_WRAP; + + if (radio->stereo) + tuner->audmode = V4L2_TUNER_MODE_STEREO; + else + tuner->audmode = V4L2_TUNER_MODE_MONO; + + if (core->mode != WL1273_MODE_RX) + return 0; + + if (mutex_lock_interruptible(&core->lock)) + return -EINTR; + + r = core->read(core, WL1273_STEREO_GET, &val); + if (r) + goto out; + + if (val == 1) + tuner->rxsubchans = V4L2_TUNER_SUB_STEREO; + else + tuner->rxsubchans = V4L2_TUNER_SUB_MONO; + + r = core->read(core, WL1273_RSSI_LVL_GET, &val); + if (r) + goto out; + + tuner->signal = (s16) val; + dev_dbg(radio->dev, "Signal: %d\n", tuner->signal); + + tuner->afc = 0; + + r = core->read(core, WL1273_RDS_SYNC_GET, &val); + if (r) + goto out; + + if (val == WL1273_RDS_SYNCHRONIZED) + tuner->rxsubchans |= V4L2_TUNER_SUB_RDS; +out: + mutex_unlock(&core->lock); + + return r; +} + +static int wl1273_fm_vidioc_s_tuner(struct file *file, void *priv, + const struct v4l2_tuner *tuner) +{ + struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); + struct wl1273_core *core = radio->core; + int r = 0; + + dev_dbg(radio->dev, "%s\n", __func__); + dev_dbg(radio->dev, "tuner->index: %d\n", tuner->index); + dev_dbg(radio->dev, "tuner->name: %s\n", tuner->name); + dev_dbg(radio->dev, "tuner->capability: 0x%04x\n", tuner->capability); + dev_dbg(radio->dev, "tuner->rxsubchans: 0x%04x\n", tuner->rxsubchans); + dev_dbg(radio->dev, "tuner->rangelow: %d\n", tuner->rangelow); + dev_dbg(radio->dev, "tuner->rangehigh: %d\n", tuner->rangehigh); + + if (tuner->index > 0) + return -EINVAL; + + if (mutex_lock_interruptible(&core->lock)) + return -EINTR; + + r = wl1273_fm_set_mode(radio, WL1273_MODE_RX); + if (r) + goto out; + + if (tuner->rxsubchans & V4L2_TUNER_SUB_RDS) + r = wl1273_fm_set_rds(radio, WL1273_RDS_ON); + else + r = wl1273_fm_set_rds(radio, WL1273_RDS_OFF); + + if (r) + dev_warn(radio->dev, "%s: RDS fails: %d\n", __func__, r); + + if (tuner->audmode == V4L2_TUNER_MODE_MONO) { + r = core->write(core, WL1273_MOST_MODE_SET, WL1273_RX_MONO); + if (r < 0) { + dev_warn(radio->dev, "%s: MOST_MODE fails: %d\n", + __func__, r); + goto out; + } + radio->stereo = false; + } else if (tuner->audmode == V4L2_TUNER_MODE_STEREO) { + r = core->write(core, WL1273_MOST_MODE_SET, WL1273_RX_STEREO); + if (r < 0) { + dev_warn(radio->dev, "%s: MOST_MODE fails: %d\n", + __func__, r); + goto out; + } + radio->stereo = true; + } else { + dev_err(radio->dev, "%s: tuner->audmode: %d\n", + __func__, tuner->audmode); + r = -EINVAL; + goto out; + } + +out: + mutex_unlock(&core->lock); + + return r; +} + +static int wl1273_fm_vidioc_g_frequency(struct file *file, void *priv, + struct v4l2_frequency *freq) +{ + struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); + struct wl1273_core *core = radio->core; + + dev_dbg(radio->dev, "%s\n", __func__); + + if (mutex_lock_interruptible(&core->lock)) + return -EINTR; + + freq->type = V4L2_TUNER_RADIO; + freq->frequency = WL1273_FREQ(wl1273_fm_get_freq(radio)); + + mutex_unlock(&core->lock); + + return 0; +} + +static int wl1273_fm_vidioc_s_frequency(struct file *file, void *priv, + const struct v4l2_frequency *freq) +{ + struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); + struct wl1273_core *core = radio->core; + int r; + + dev_dbg(radio->dev, "%s: %d\n", __func__, freq->frequency); + + if (freq->type != V4L2_TUNER_RADIO) { + dev_dbg(radio->dev, + "freq->type != V4L2_TUNER_RADIO: %d\n", freq->type); + return -EINVAL; + } + + if (mutex_lock_interruptible(&core->lock)) + return -EINTR; + + if (core->mode == WL1273_MODE_RX) { + dev_dbg(radio->dev, "freq: %d\n", freq->frequency); + + r = wl1273_fm_set_rx_freq(radio, + WL1273_INV_FREQ(freq->frequency)); + if (r) + dev_warn(radio->dev, WL1273_FM_DRIVER_NAME + ": set frequency failed with %d\n", r); + } else { + r = wl1273_fm_set_tx_freq(radio, + WL1273_INV_FREQ(freq->frequency)); + if (r) + dev_warn(radio->dev, WL1273_FM_DRIVER_NAME + ": set frequency failed with %d\n", r); + } + + mutex_unlock(&core->lock); + + dev_dbg(radio->dev, "wl1273_vidioc_s_frequency: DONE\n"); + return r; +} + +#define WL1273_DEFAULT_SEEK_LEVEL 7 + +static int wl1273_fm_vidioc_s_hw_freq_seek(struct file *file, void *priv, + const struct v4l2_hw_freq_seek *seek) +{ + struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); + struct wl1273_core *core = radio->core; + int r; + + dev_dbg(radio->dev, "%s\n", __func__); + + if (seek->tuner != 0 || seek->type != V4L2_TUNER_RADIO) + return -EINVAL; + + if (file->f_flags & O_NONBLOCK) + return -EWOULDBLOCK; + + if (mutex_lock_interruptible(&core->lock)) + return -EINTR; + + r = wl1273_fm_set_mode(radio, WL1273_MODE_RX); + if (r) + goto out; + + r = wl1273_fm_tx_set_spacing(radio, seek->spacing); + if (r) + dev_warn(radio->dev, "HW seek failed: %d\n", r); + + r = wl1273_fm_set_seek(radio, seek->wrap_around, seek->seek_upward, + WL1273_DEFAULT_SEEK_LEVEL); + if (r) + dev_warn(radio->dev, "HW seek failed: %d\n", r); + +out: + mutex_unlock(&core->lock); + return r; +} + +static int wl1273_fm_vidioc_s_modulator(struct file *file, void *priv, + const struct v4l2_modulator *modulator) +{ + struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); + struct wl1273_core *core = radio->core; + int r = 0; + + dev_dbg(radio->dev, "%s\n", __func__); + + if (modulator->index > 0) + return -EINVAL; + + if (mutex_lock_interruptible(&core->lock)) + return -EINTR; + + r = wl1273_fm_set_mode(radio, WL1273_MODE_TX); + if (r) + goto out; + + if (modulator->txsubchans & V4L2_TUNER_SUB_RDS) + r = wl1273_fm_set_rds(radio, WL1273_RDS_ON); + else + r = wl1273_fm_set_rds(radio, WL1273_RDS_OFF); + + if (modulator->txsubchans & V4L2_TUNER_SUB_MONO) + r = core->write(core, WL1273_MONO_SET, WL1273_TX_MONO); + else + r = core->write(core, WL1273_MONO_SET, + WL1273_RX_STEREO); + if (r < 0) + dev_warn(radio->dev, WL1273_FM_DRIVER_NAME + "MONO_SET fails: %d\n", r); +out: + mutex_unlock(&core->lock); + + return r; +} + +static int wl1273_fm_vidioc_g_modulator(struct file *file, void *priv, + struct v4l2_modulator *modulator) +{ + struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); + struct wl1273_core *core = radio->core; + u16 val; + int r; + + dev_dbg(radio->dev, "%s\n", __func__); + + strlcpy(modulator->name, WL1273_FM_DRIVER_NAME, + sizeof(modulator->name)); + + modulator->rangelow = WL1273_FREQ(WL1273_BAND_JAPAN_LOW); + modulator->rangehigh = WL1273_FREQ(WL1273_BAND_OTHER_HIGH); + + modulator->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_RDS | + V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS_BLOCK_IO; + + if (core->mode != WL1273_MODE_TX) + return 0; + + if (mutex_lock_interruptible(&core->lock)) + return -EINTR; + + r = core->read(core, WL1273_MONO_SET, &val); + if (r) + goto out; + + if (val == WL1273_TX_STEREO) + modulator->txsubchans = V4L2_TUNER_SUB_STEREO; + else + modulator->txsubchans = V4L2_TUNER_SUB_MONO; + + if (radio->rds_on) + modulator->txsubchans |= V4L2_TUNER_SUB_RDS; +out: + mutex_unlock(&core->lock); + + return 0; +} + +static int wl1273_fm_vidioc_log_status(struct file *file, void *priv) +{ + struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); + struct wl1273_core *core = radio->core; + struct device *dev = radio->dev; + u16 val; + int r; + + dev_info(dev, DRIVER_DESC); + + if (core->mode == WL1273_MODE_OFF) { + dev_info(dev, "Mode: Off\n"); + return 0; + } + + if (core->mode == WL1273_MODE_SUSPENDED) { + dev_info(dev, "Mode: Suspended\n"); + return 0; + } + + r = core->read(core, WL1273_ASIC_ID_GET, &val); + if (r) + dev_err(dev, "%s: Get ASIC_ID fails.\n", __func__); + else + dev_info(dev, "ASIC_ID: 0x%04x\n", val); + + r = core->read(core, WL1273_ASIC_VER_GET, &val); + if (r) + dev_err(dev, "%s: Get ASIC_VER fails.\n", __func__); + else + dev_info(dev, "ASIC Version: 0x%04x\n", val); + + r = core->read(core, WL1273_FIRM_VER_GET, &val); + if (r) + dev_err(dev, "%s: Get FIRM_VER fails.\n", __func__); + else + dev_info(dev, "FW version: %d(0x%04x)\n", val, val); + + r = core->read(core, WL1273_BAND_SET, &val); + if (r) + dev_err(dev, "%s: Get BAND fails.\n", __func__); + else + dev_info(dev, "BAND: %d\n", val); + + if (core->mode == WL1273_MODE_TX) { + r = core->read(core, WL1273_PUPD_SET, &val); + if (r) + dev_err(dev, "%s: Get PUPD fails.\n", __func__); + else + dev_info(dev, "PUPD: 0x%04x\n", val); + + r = core->read(core, WL1273_CHANL_SET, &val); + if (r) + dev_err(dev, "%s: Get CHANL fails.\n", __func__); + else + dev_info(dev, "Tx frequency: %dkHz\n", val*10); + } else if (core->mode == WL1273_MODE_RX) { + int bf = radio->rangelow; + + r = core->read(core, WL1273_FREQ_SET, &val); + if (r) + dev_err(dev, "%s: Get FREQ fails.\n", __func__); + else + dev_info(dev, "RX Frequency: %dkHz\n", bf + val*50); + + r = core->read(core, WL1273_MOST_MODE_SET, &val); + if (r) + dev_err(dev, "%s: Get MOST_MODE fails.\n", + __func__); + else if (val == 0) + dev_info(dev, "MOST_MODE: Stereo according to blend\n"); + else if (val == 1) + dev_info(dev, "MOST_MODE: Force mono output\n"); + else + dev_info(dev, "MOST_MODE: Unexpected value: %d\n", val); + + r = core->read(core, WL1273_MOST_BLEND_SET, &val); + if (r) + dev_err(dev, "%s: Get MOST_BLEND fails.\n", __func__); + else if (val == 0) + dev_info(dev, + "MOST_BLEND: Switched blend & hysteresis.\n"); + else if (val == 1) + dev_info(dev, "MOST_BLEND: Soft blend.\n"); + else + dev_info(dev, "MOST_BLEND: Unexpected val: %d\n", val); + + r = core->read(core, WL1273_STEREO_GET, &val); + if (r) + dev_err(dev, "%s: Get STEREO fails.\n", __func__); + else if (val == 0) + dev_info(dev, "STEREO: Not detected\n"); + else if (val == 1) + dev_info(dev, "STEREO: Detected\n"); + else + dev_info(dev, "STEREO: Unexpected value: %d\n", val); + + r = core->read(core, WL1273_RSSI_LVL_GET, &val); + if (r) + dev_err(dev, "%s: Get RSSI_LVL fails.\n", __func__); + else + dev_info(dev, "RX signal strength: %d\n", (s16) val); + + r = core->read(core, WL1273_POWER_SET, &val); + if (r) + dev_err(dev, "%s: Get POWER fails.\n", __func__); + else + dev_info(dev, "POWER: 0x%04x\n", val); + + r = core->read(core, WL1273_INT_MASK_SET, &val); + if (r) + dev_err(dev, "%s: Get INT_MASK fails.\n", __func__); + else + dev_info(dev, "INT_MASK: 0x%04x\n", val); + + r = core->read(core, WL1273_RDS_SYNC_GET, &val); + if (r) + dev_err(dev, "%s: Get RDS_SYNC fails.\n", + __func__); + else if (val == 0) + dev_info(dev, "RDS_SYNC: Not synchronized\n"); + + else if (val == 1) + dev_info(dev, "RDS_SYNC: Synchronized\n"); + else + dev_info(dev, "RDS_SYNC: Unexpected value: %d\n", val); + + r = core->read(core, WL1273_I2S_MODE_CONFIG_SET, &val); + if (r) + dev_err(dev, "%s: Get I2S_MODE_CONFIG fails.\n", + __func__); + else + dev_info(dev, "I2S_MODE_CONFIG: 0x%04x\n", val); + + r = core->read(core, WL1273_VOLUME_SET, &val); + if (r) + dev_err(dev, "%s: Get VOLUME fails.\n", __func__); + else + dev_info(dev, "VOLUME: 0x%04x\n", val); + } + + return 0; +} + +static void wl1273_vdev_release(struct video_device *dev) +{ +} + +static const struct v4l2_ctrl_ops wl1273_ctrl_ops = { + .s_ctrl = wl1273_fm_vidioc_s_ctrl, + .g_volatile_ctrl = wl1273_fm_g_volatile_ctrl, +}; + +static const struct v4l2_ioctl_ops wl1273_ioctl_ops = { + .vidioc_querycap = wl1273_fm_vidioc_querycap, + .vidioc_g_input = wl1273_fm_vidioc_g_input, + .vidioc_s_input = wl1273_fm_vidioc_s_input, + .vidioc_g_audio = wl1273_fm_vidioc_g_audio, + .vidioc_s_audio = wl1273_fm_vidioc_s_audio, + .vidioc_g_tuner = wl1273_fm_vidioc_g_tuner, + .vidioc_s_tuner = wl1273_fm_vidioc_s_tuner, + .vidioc_g_frequency = wl1273_fm_vidioc_g_frequency, + .vidioc_s_frequency = wl1273_fm_vidioc_s_frequency, + .vidioc_s_hw_freq_seek = wl1273_fm_vidioc_s_hw_freq_seek, + .vidioc_g_modulator = wl1273_fm_vidioc_g_modulator, + .vidioc_s_modulator = wl1273_fm_vidioc_s_modulator, + .vidioc_log_status = wl1273_fm_vidioc_log_status, +}; + +static struct video_device wl1273_viddev_template = { + .fops = &wl1273_fops, + .ioctl_ops = &wl1273_ioctl_ops, + .name = WL1273_FM_DRIVER_NAME, + .release = wl1273_vdev_release, + .vfl_dir = VFL_DIR_TX, +}; + +static int wl1273_fm_radio_remove(struct platform_device *pdev) +{ + struct wl1273_device *radio = platform_get_drvdata(pdev); + struct wl1273_core *core = radio->core; + + dev_info(&pdev->dev, "%s.\n", __func__); + + free_irq(core->client->irq, radio); + core->pdata->free_resources(); + + v4l2_ctrl_handler_free(&radio->ctrl_handler); + video_unregister_device(&radio->videodev); + v4l2_device_unregister(&radio->v4l2dev); + + return 0; +} + +static int wl1273_fm_radio_probe(struct platform_device *pdev) +{ + struct wl1273_core **core = pdev->dev.platform_data; + struct wl1273_device *radio; + struct v4l2_ctrl *ctrl; + int r = 0; + + pr_debug("%s\n", __func__); + + if (!core) { + dev_err(&pdev->dev, "No platform data.\n"); + r = -EINVAL; + goto pdata_err; + } + + radio = devm_kzalloc(&pdev->dev, sizeof(*radio), GFP_KERNEL); + if (!radio) { + r = -ENOMEM; + goto pdata_err; + } + + /* RDS buffer allocation */ + radio->buf_size = rds_buf * RDS_BLOCK_SIZE; + radio->buffer = devm_kzalloc(&pdev->dev, radio->buf_size, GFP_KERNEL); + if (!radio->buffer) { + pr_err("Cannot allocate memory for RDS buffer.\n"); + r = -ENOMEM; + goto pdata_err; + } + + radio->core = *core; + radio->irq_flags = WL1273_IRQ_MASK; + radio->dev = &radio->core->client->dev; + radio->rds_on = false; + radio->core->mode = WL1273_MODE_OFF; + radio->tx_power = 118; + radio->core->audio_mode = WL1273_AUDIO_ANALOG; + radio->band = WL1273_BAND_OTHER; + radio->core->i2s_mode = WL1273_I2S_DEF_MODE; + radio->core->channel_number = 2; + radio->core->volume = WL1273_DEFAULT_VOLUME; + radio->rx_frequency = WL1273_BAND_OTHER_LOW; + radio->tx_frequency = WL1273_BAND_OTHER_HIGH; + radio->rangelow = WL1273_BAND_OTHER_LOW; + radio->rangehigh = WL1273_BAND_OTHER_HIGH; + radio->stereo = true; + radio->bus_type = "I2C"; + + if (radio->core->pdata->request_resources) { + r = radio->core->pdata->request_resources(radio->core->client); + if (r) { + dev_err(radio->dev, WL1273_FM_DRIVER_NAME + ": Cannot get platform data\n"); + goto pdata_err; + } + + dev_dbg(radio->dev, "irq: %d\n", radio->core->client->irq); + + r = request_threaded_irq(radio->core->client->irq, NULL, + wl1273_fm_irq_thread_handler, + IRQF_ONESHOT | IRQF_TRIGGER_FALLING, + "wl1273-fm", radio); + if (r < 0) { + dev_err(radio->dev, WL1273_FM_DRIVER_NAME + ": Unable to register IRQ handler: %d\n", r); + goto err_request_irq; + } + } else { + dev_err(radio->dev, WL1273_FM_DRIVER_NAME ": Core WL1273 IRQ" + " not configured"); + r = -EINVAL; + goto pdata_err; + } + + init_completion(&radio->busy); + init_waitqueue_head(&radio->read_queue); + + radio->write_buf = devm_kzalloc(&pdev->dev, 256, GFP_KERNEL); + if (!radio->write_buf) { + r = -ENOMEM; + goto write_buf_err; + } + + radio->dev = &pdev->dev; + radio->v4l2dev.ctrl_handler = &radio->ctrl_handler; + radio->rds_users = 0; + + r = v4l2_device_register(&pdev->dev, &radio->v4l2dev); + if (r) { + dev_err(&pdev->dev, "Cannot register v4l2_device.\n"); + goto write_buf_err; + } + + /* V4L2 configuration */ + radio->videodev = wl1273_viddev_template; + + radio->videodev.v4l2_dev = &radio->v4l2dev; + + v4l2_ctrl_handler_init(&radio->ctrl_handler, 6); + + /* add in ascending ID order */ + v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops, + V4L2_CID_AUDIO_VOLUME, 0, WL1273_MAX_VOLUME, 1, + WL1273_DEFAULT_VOLUME); + + v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops, + V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1); + + v4l2_ctrl_new_std_menu(&radio->ctrl_handler, &wl1273_ctrl_ops, + V4L2_CID_TUNE_PREEMPHASIS, + V4L2_PREEMPHASIS_75_uS, 0x03, + V4L2_PREEMPHASIS_50_uS); + + v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops, + V4L2_CID_TUNE_POWER_LEVEL, 91, 122, 1, 118); + + ctrl = v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops, + V4L2_CID_TUNE_ANTENNA_CAPACITOR, + 0, 255, 1, 255); + if (ctrl) + ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE; + + if (radio->ctrl_handler.error) { + r = radio->ctrl_handler.error; + dev_err(&pdev->dev, "Ctrl handler error: %d\n", r); + goto handler_init_err; + } + + video_set_drvdata(&radio->videodev, radio); + platform_set_drvdata(pdev, radio); + + /* register video device */ + r = video_register_device(&radio->videodev, VFL_TYPE_RADIO, radio_nr); + if (r) { + dev_err(&pdev->dev, WL1273_FM_DRIVER_NAME + ": Could not register video device\n"); + goto handler_init_err; + } + + return 0; + +handler_init_err: + v4l2_ctrl_handler_free(&radio->ctrl_handler); + v4l2_device_unregister(&radio->v4l2dev); +write_buf_err: + free_irq(radio->core->client->irq, radio); +err_request_irq: + radio->core->pdata->free_resources(); +pdata_err: + return r; +} + +static struct platform_driver wl1273_fm_radio_driver = { + .probe = wl1273_fm_radio_probe, + .remove = wl1273_fm_radio_remove, + .driver = { + .name = "wl1273_fm_radio", + .owner = THIS_MODULE, + }, +}; + +module_platform_driver(wl1273_fm_radio_driver); + +MODULE_AUTHOR("Matti Aaltonen <matti.j.aaltonen@nokia.com>"); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:wl1273_fm_radio"); diff --git a/drivers/media/radio/radio-zoltrix.c b/drivers/media/radio/radio-zoltrix.c new file mode 100644 index 0000000..3aa0abc --- /dev/null +++ b/drivers/media/radio/radio-zoltrix.c @@ -0,0 +1,248 @@ +/* + * Zoltrix Radio Plus driver + * Copyright 1998 C. van Schaik <carl@leg.uct.ac.za> + * + * BUGS + * Due to the inconsistency in reading from the signal flags + * it is difficult to get an accurate tuned signal. + * + * It seems that the card is not linear to 0 volume. It cuts off + * at a low volume, and it is not possible (at least I have not found) + * to get fine volume control over the low volume range. + * + * Some code derived from code by Romolo Manfredini + * romolo@bicnet.it + * + * 1999-05-06 - (C. van Schaik) + * - Make signal strength and stereo scans + * kinder to cpu while in delay + * 1999-01-05 - (C. van Schaik) + * - Changed tuning to 1/160Mhz accuracy + * - Added stereo support + * (card defaults to stereo) + * (can explicitly force mono on the card) + * (can detect if station is in stereo) + * - Added unmute function + * - Reworked ioctl functions + * 2002-07-15 - Fix Stereo typo + * + * 2006-07-24 - Converted to V4L2 API + * by Mauro Carvalho Chehab <mchehab@infradead.org> + * + * Converted to the radio-isa framework by Hans Verkuil <hans.verkuil@cisco.com> + * + * Note that this is the driver for the Zoltrix Radio Plus. + * This driver does not work for the Zoltrix Radio Plus 108 or the + * Zoltrix Radio Plus for Windows. + * + * Fully tested with the Keene USB FM Transmitter and the v4l2-compliance tool. + */ + +#include <linux/module.h> /* Modules */ +#include <linux/init.h> /* Initdata */ +#include <linux/ioport.h> /* request_region */ +#include <linux/delay.h> /* udelay, msleep */ +#include <linux/videodev2.h> /* kernel radio structs */ +#include <linux/mutex.h> +#include <linux/io.h> /* outb, outb_p */ +#include <linux/slab.h> +#include <media/v4l2-device.h> +#include <media/v4l2-ioctl.h> +#include "radio-isa.h" + +MODULE_AUTHOR("C. van Schaik"); +MODULE_DESCRIPTION("A driver for the Zoltrix Radio Plus."); +MODULE_LICENSE("GPL"); +MODULE_VERSION("0.1.99"); + +#ifndef CPTCFG_RADIO_ZOLTRIX_PORT +#define CPTCFG_RADIO_ZOLTRIX_PORT -1 +#endif + +#define ZOLTRIX_MAX 2 + +static int io[ZOLTRIX_MAX] = { [0] = CPTCFG_RADIO_ZOLTRIX_PORT, + [1 ... (ZOLTRIX_MAX - 1)] = -1 }; +static int radio_nr[ZOLTRIX_MAX] = { [0 ... (ZOLTRIX_MAX - 1)] = -1 }; + +module_param_array(io, int, NULL, 0444); +MODULE_PARM_DESC(io, "I/O addresses of the Zoltrix Radio Plus card (0x20c or 0x30c)"); +module_param_array(radio_nr, int, NULL, 0444); +MODULE_PARM_DESC(radio_nr, "Radio device numbers"); + +struct zoltrix { + struct radio_isa_card isa; + int curvol; + bool muted; +}; + +static struct radio_isa_card *zoltrix_alloc(void) +{ + struct zoltrix *zol = kzalloc(sizeof(*zol), GFP_KERNEL); + + return zol ? &zol->isa : NULL; +} + +static int zoltrix_s_mute_volume(struct radio_isa_card *isa, bool mute, int vol) +{ + struct zoltrix *zol = container_of(isa, struct zoltrix, isa); + + zol->curvol = vol; + zol->muted = mute; + if (mute || vol == 0) { + outb(0, isa->io); + outb(0, isa->io); + inb(isa->io + 3); /* Zoltrix needs to be read to confirm */ + return 0; + } + + outb(vol - 1, isa->io); + msleep(10); + inb(isa->io + 2); + return 0; +} + +/* tunes the radio to the desired frequency */ +static int zoltrix_s_frequency(struct radio_isa_card *isa, u32 freq) +{ + struct zoltrix *zol = container_of(isa, struct zoltrix, isa); + struct v4l2_device *v4l2_dev = &isa->v4l2_dev; + unsigned long long bitmask, f, m; + bool stereo = isa->stereo; + int i; + + if (freq == 0) { + v4l2_warn(v4l2_dev, "cannot set a frequency of 0.\n"); + return -EINVAL; + } + + m = (freq / 160 - 8800) * 2; + f = (unsigned long long)m + 0x4d1c; + + bitmask = 0xc480402c10080000ull; + i = 45; + + outb(0, isa->io); + outb(0, isa->io); + inb(isa->io + 3); /* Zoltrix needs to be read to confirm */ + + outb(0x40, isa->io); + outb(0xc0, isa->io); + + bitmask = (bitmask ^ ((f & 0xff) << 47) ^ ((f & 0xff00) << 30) ^ (stereo << 31)); + while (i--) { + if ((bitmask & 0x8000000000000000ull) != 0) { + outb(0x80, isa->io); + udelay(50); + outb(0x00, isa->io); + udelay(50); + outb(0x80, isa->io); + udelay(50); + } else { + outb(0xc0, isa->io); + udelay(50); + outb(0x40, isa->io); + udelay(50); + outb(0xc0, isa->io); + udelay(50); + } + bitmask *= 2; + } + /* termination sequence */ + outb(0x80, isa->io); + outb(0xc0, isa->io); + outb(0x40, isa->io); + udelay(1000); + inb(isa->io + 2); + udelay(1000); + + return zoltrix_s_mute_volume(isa, zol->muted, zol->curvol); +} + +/* Get signal strength */ +static u32 zoltrix_g_rxsubchans(struct radio_isa_card *isa) +{ + struct zoltrix *zol = container_of(isa, struct zoltrix, isa); + int a, b; + + outb(0x00, isa->io); /* This stuff I found to do nothing */ + outb(zol->curvol, isa->io); + msleep(20); + + a = inb(isa->io); + msleep(10); + b = inb(isa->io); + + return (a == b && a == 0xcf) ? + V4L2_TUNER_SUB_STEREO : V4L2_TUNER_SUB_MONO; +} + +static u32 zoltrix_g_signal(struct radio_isa_card *isa) +{ + struct zoltrix *zol = container_of(isa, struct zoltrix, isa); + int a, b; + + outb(0x00, isa->io); /* This stuff I found to do nothing */ + outb(zol->curvol, isa->io); + msleep(20); + + a = inb(isa->io); + msleep(10); + b = inb(isa->io); + + if (a != b) + return 0; + + /* I found this out by playing with a binary scanner on the card io */ + return (a == 0xcf || a == 0xdf || a == 0xef) ? 0xffff : 0; +} + +static int zoltrix_s_stereo(struct radio_isa_card *isa, bool stereo) +{ + return zoltrix_s_frequency(isa, isa->freq); +} + +static const struct radio_isa_ops zoltrix_ops = { + .alloc = zoltrix_alloc, + .s_mute_volume = zoltrix_s_mute_volume, + .s_frequency = zoltrix_s_frequency, + .s_stereo = zoltrix_s_stereo, + .g_rxsubchans = zoltrix_g_rxsubchans, + .g_signal = zoltrix_g_signal, +}; + +static const int zoltrix_ioports[] = { 0x20c, 0x30c }; + +static struct radio_isa_driver zoltrix_driver = { + .driver = { + .match = radio_isa_match, + .probe = radio_isa_probe, + .remove = radio_isa_remove, + .driver = { + .name = "radio-zoltrix", + }, + }, + .io_params = io, + .radio_nr_params = radio_nr, + .io_ports = zoltrix_ioports, + .num_of_io_ports = ARRAY_SIZE(zoltrix_ioports), + .region_size = 2, + .card = "Zoltrix Radio Plus", + .ops = &zoltrix_ops, + .has_stereo = true, + .max_volume = 15, +}; + +static int __init zoltrix_init(void) +{ + return isa_register_driver(&zoltrix_driver.driver, ZOLTRIX_MAX); +} + +static void __exit zoltrix_exit(void) +{ + isa_unregister_driver(&zoltrix_driver.driver); +} + +module_init(zoltrix_init); +module_exit(zoltrix_exit); + diff --git a/drivers/media/radio/saa7706h.c b/drivers/media/radio/saa7706h.c new file mode 100644 index 0000000..06c06cc --- /dev/null +++ b/drivers/media/radio/saa7706h.c @@ -0,0 +1,452 @@ +/* + * saa7706.c Philips SAA7706H Car Radio DSP driver + * Copyright (c) 2009 Intel Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include <linux/module.h> +#include <linux/init.h> +#include <linux/delay.h> +#include <linux/errno.h> +#include <linux/kernel.h> +#include <linux/interrupt.h> +#include <linux/i2c.h> +#include <linux/slab.h> +#include <media/v4l2-device.h> +#include <media/v4l2-chip-ident.h> + +#define DRIVER_NAME "saa7706h" + +/* the I2C memory map looks like this + + $1C00 - $FFFF Not Used + $2200 - $3FFF Reserved YRAM (DSP2) space + $2000 - $21FF YRAM (DSP2) + $1FF0 - $1FFF Hardware Registers + $1280 - $1FEF Reserved XRAM (DSP2) space + $1000 - $127F XRAM (DSP2) + $0FFF DSP CONTROL + $0A00 - $0FFE Reserved + $0980 - $09FF Reserved YRAM (DSP1) space + $0800 - $097F YRAM (DSP1) + $0200 - $07FF Not Used + $0180 - $01FF Reserved XRAM (DSP1) space + $0000 - $017F XRAM (DSP1) +*/ + +#define SAA7706H_REG_CTRL 0x0fff +#define SAA7706H_CTRL_BYP_PLL 0x0001 +#define SAA7706H_CTRL_PLL_DIV_MASK 0x003e +#define SAA7706H_CTRL_PLL3_62975MHZ 0x003e +#define SAA7706H_CTRL_DSP_TURBO 0x0040 +#define SAA7706H_CTRL_PC_RESET_DSP1 0x0080 +#define SAA7706H_CTRL_PC_RESET_DSP2 0x0100 +#define SAA7706H_CTRL_DSP1_ROM_EN_MASK 0x0600 +#define SAA7706H_CTRL_DSP1_FUNC_PROM 0x0000 +#define SAA7706H_CTRL_DSP2_ROM_EN_MASK 0x1800 +#define SAA7706H_CTRL_DSP2_FUNC_PROM 0x0000 +#define SAA7706H_CTRL_DIG_SIL_INTERPOL 0x8000 + +#define SAA7706H_REG_EVALUATION 0x1ff0 +#define SAA7706H_EVAL_DISABLE_CHARGE_PUMP 0x000001 +#define SAA7706H_EVAL_DCS_CLOCK 0x000002 +#define SAA7706H_EVAL_GNDRC1_ENABLE 0x000004 +#define SAA7706H_EVAL_GNDRC2_ENABLE 0x000008 + +#define SAA7706H_REG_CL_GEN1 0x1ff3 +#define SAA7706H_CL_GEN1_MIN_LOOPGAIN_MASK 0x00000f +#define SAA7706H_CL_GEN1_LOOPGAIN_MASK 0x0000f0 +#define SAA7706H_CL_GEN1_COARSE_RATION 0xffff00 + +#define SAA7706H_REG_CL_GEN2 0x1ff4 +#define SAA7706H_CL_GEN2_WSEDGE_FALLING 0x000001 +#define SAA7706H_CL_GEN2_STOP_VCO 0x000002 +#define SAA7706H_CL_GEN2_FRERUN 0x000004 +#define SAA7706H_CL_GEN2_ADAPTIVE 0x000008 +#define SAA7706H_CL_GEN2_FINE_RATIO_MASK 0x0ffff0 + +#define SAA7706H_REG_CL_GEN4 0x1ff6 +#define SAA7706H_CL_GEN4_BYPASS_PLL1 0x001000 +#define SAA7706H_CL_GEN4_PLL1_DIV_MASK 0x03e000 +#define SAA7706H_CL_GEN4_DSP1_TURBO 0x040000 + +#define SAA7706H_REG_SEL 0x1ff7 +#define SAA7706H_SEL_DSP2_SRCA_MASK 0x000007 +#define SAA7706H_SEL_DSP2_FMTA_MASK 0x000031 +#define SAA7706H_SEL_DSP2_SRCB_MASK 0x0001c0 +#define SAA7706H_SEL_DSP2_FMTB_MASK 0x000e00 +#define SAA7706H_SEL_DSP1_SRC_MASK 0x003000 +#define SAA7706H_SEL_DSP1_FMT_MASK 0x01c003 +#define SAA7706H_SEL_SPDIF2 0x020000 +#define SAA7706H_SEL_HOST_IO_FMT_MASK 0x1c0000 +#define SAA7706H_SEL_EN_HOST_IO 0x200000 + +#define SAA7706H_REG_IAC 0x1ff8 +#define SAA7706H_REG_CLK_SET 0x1ff9 +#define SAA7706H_REG_CLK_COEFF 0x1ffa +#define SAA7706H_REG_INPUT_SENS 0x1ffb +#define SAA7706H_INPUT_SENS_RDS_VOL_MASK 0x0003f +#define SAA7706H_INPUT_SENS_FM_VOL_MASK 0x00fc0 +#define SAA7706H_INPUT_SENS_FM_MPX 0x01000 +#define SAA7706H_INPUT_SENS_OFF_FILTER_A_EN 0x02000 +#define SAA7706H_INPUT_SENS_OFF_FILTER_B_EN 0x04000 +#define SAA7706H_REG_PHONE_NAV_AUDIO 0x1ffc +#define SAA7706H_REG_IO_CONF_DSP2 0x1ffd +#define SAA7706H_REG_STATUS_DSP2 0x1ffe +#define SAA7706H_REG_PC_DSP2 0x1fff + +#define SAA7706H_DSP1_MOD0 0x0800 +#define SAA7706H_DSP1_ROM_VER 0x097f +#define SAA7706H_DSP2_MPTR0 0x1000 + +#define SAA7706H_DSP1_MODPNTR 0x0000 + +#define SAA7706H_DSP2_XMEM_CONTLLCW 0x113e +#define SAA7706H_DSP2_XMEM_BUSAMP 0x114a +#define SAA7706H_DSP2_XMEM_FDACPNTR 0x11f9 +#define SAA7706H_DSP2_XMEM_IIS1PNTR 0x11fb + +#define SAA7706H_DSP2_YMEM_PVGA 0x212a +#define SAA7706H_DSP2_YMEM_PVAT1 0x212b +#define SAA7706H_DSP2_YMEM_PVAT 0x212c +#define SAA7706H_DSP2_YMEM_ROM_VER 0x21ff + +#define SUPPORTED_DSP1_ROM_VER 0x667 + +struct saa7706h_state { + struct v4l2_subdev sd; + unsigned muted; +}; + +static inline struct saa7706h_state *to_state(struct v4l2_subdev *sd) +{ + return container_of(sd, struct saa7706h_state, sd); +} + +static int saa7706h_i2c_send(struct i2c_client *client, const u8 *data, int len) +{ + int err = i2c_master_send(client, data, len); + if (err == len) + return 0; + return err > 0 ? -EIO : err; +} + +static int saa7706h_i2c_transfer(struct i2c_client *client, + struct i2c_msg *msgs, int num) +{ + int err = i2c_transfer(client->adapter, msgs, num); + if (err == num) + return 0; + return err > 0 ? -EIO : err; +} + +static int saa7706h_set_reg24(struct v4l2_subdev *sd, u16 reg, u32 val) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + u8 buf[5]; + int pos = 0; + + buf[pos++] = reg >> 8; + buf[pos++] = reg; + buf[pos++] = val >> 16; + buf[pos++] = val >> 8; + buf[pos++] = val; + + return saa7706h_i2c_send(client, buf, pos); +} + +static int saa7706h_set_reg24_err(struct v4l2_subdev *sd, u16 reg, u32 val, + int *err) +{ + return *err ? *err : saa7706h_set_reg24(sd, reg, val); +} + +static int saa7706h_set_reg16(struct v4l2_subdev *sd, u16 reg, u16 val) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + u8 buf[4]; + int pos = 0; + + buf[pos++] = reg >> 8; + buf[pos++] = reg; + buf[pos++] = val >> 8; + buf[pos++] = val; + + return saa7706h_i2c_send(client, buf, pos); +} + +static int saa7706h_set_reg16_err(struct v4l2_subdev *sd, u16 reg, u16 val, + int *err) +{ + return *err ? *err : saa7706h_set_reg16(sd, reg, val); +} + +static int saa7706h_get_reg16(struct v4l2_subdev *sd, u16 reg) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + u8 buf[2]; + int err; + u8 regaddr[] = {reg >> 8, reg}; + struct i2c_msg msg[] = { + { + .addr = client->addr, + .len = sizeof(regaddr), + .buf = regaddr + }, + { + .addr = client->addr, + .flags = I2C_M_RD, + .len = sizeof(buf), + .buf = buf + } + }; + + err = saa7706h_i2c_transfer(client, msg, ARRAY_SIZE(msg)); + if (err) + return err; + + return buf[0] << 8 | buf[1]; +} + +static int saa7706h_unmute(struct v4l2_subdev *sd) +{ + struct saa7706h_state *state = to_state(sd); + int err = 0; + + err = saa7706h_set_reg16_err(sd, SAA7706H_REG_CTRL, + SAA7706H_CTRL_PLL3_62975MHZ | SAA7706H_CTRL_PC_RESET_DSP1 | + SAA7706H_CTRL_PC_RESET_DSP2, &err); + + /* newer versions of the chip requires a small sleep after reset */ + msleep(1); + + err = saa7706h_set_reg16_err(sd, SAA7706H_REG_CTRL, + SAA7706H_CTRL_PLL3_62975MHZ, &err); + + err = saa7706h_set_reg24_err(sd, SAA7706H_REG_EVALUATION, 0, &err); + + err = saa7706h_set_reg24_err(sd, SAA7706H_REG_CL_GEN1, 0x040022, &err); + + err = saa7706h_set_reg24_err(sd, SAA7706H_REG_CL_GEN2, + SAA7706H_CL_GEN2_WSEDGE_FALLING, &err); + + err = saa7706h_set_reg24_err(sd, SAA7706H_REG_CL_GEN4, 0x024080, &err); + + err = saa7706h_set_reg24_err(sd, SAA7706H_REG_SEL, 0x200080, &err); + + err = saa7706h_set_reg24_err(sd, SAA7706H_REG_IAC, 0xf4caed, &err); + + err = saa7706h_set_reg24_err(sd, SAA7706H_REG_CLK_SET, 0x124334, &err); + + err = saa7706h_set_reg24_err(sd, SAA7706H_REG_CLK_COEFF, 0x004a1a, + &err); + + err = saa7706h_set_reg24_err(sd, SAA7706H_REG_INPUT_SENS, 0x0071c7, + &err); + + err = saa7706h_set_reg24_err(sd, SAA7706H_REG_PHONE_NAV_AUDIO, + 0x0e22ff, &err); + + err = saa7706h_set_reg24_err(sd, SAA7706H_REG_IO_CONF_DSP2, 0x001ff8, + &err); + + err = saa7706h_set_reg24_err(sd, SAA7706H_REG_STATUS_DSP2, 0x080003, + &err); + + err = saa7706h_set_reg24_err(sd, SAA7706H_REG_PC_DSP2, 0x000004, &err); + + err = saa7706h_set_reg16_err(sd, SAA7706H_DSP1_MOD0, 0x0c6c, &err); + + err = saa7706h_set_reg24_err(sd, SAA7706H_DSP2_MPTR0, 0x000b4b, &err); + + err = saa7706h_set_reg24_err(sd, SAA7706H_DSP1_MODPNTR, 0x000600, &err); + + err = saa7706h_set_reg24_err(sd, SAA7706H_DSP1_MODPNTR, 0x0000c0, &err); + + err = saa7706h_set_reg24_err(sd, SAA7706H_DSP2_XMEM_CONTLLCW, 0x000819, + &err); + + err = saa7706h_set_reg24_err(sd, SAA7706H_DSP2_XMEM_CONTLLCW, 0x00085a, + &err); + + err = saa7706h_set_reg24_err(sd, SAA7706H_DSP2_XMEM_BUSAMP, 0x7fffff, + &err); + + err = saa7706h_set_reg24_err(sd, SAA7706H_DSP2_XMEM_FDACPNTR, 0x2000cb, + &err); + + err = saa7706h_set_reg24_err(sd, SAA7706H_DSP2_XMEM_IIS1PNTR, 0x2000cb, + &err); + + err = saa7706h_set_reg16_err(sd, SAA7706H_DSP2_YMEM_PVGA, 0x0f80, &err); + + err = saa7706h_set_reg16_err(sd, SAA7706H_DSP2_YMEM_PVAT1, 0x0800, + &err); + + err = saa7706h_set_reg16_err(sd, SAA7706H_DSP2_YMEM_PVAT, 0x0800, &err); + + err = saa7706h_set_reg24_err(sd, SAA7706H_DSP2_XMEM_CONTLLCW, 0x000905, + &err); + if (!err) + state->muted = 0; + return err; +} + +static int saa7706h_mute(struct v4l2_subdev *sd) +{ + struct saa7706h_state *state = to_state(sd); + int err; + + err = saa7706h_set_reg16(sd, SAA7706H_REG_CTRL, + SAA7706H_CTRL_PLL3_62975MHZ | SAA7706H_CTRL_PC_RESET_DSP1 | + SAA7706H_CTRL_PC_RESET_DSP2); + if (!err) + state->muted = 1; + return err; +} + +static int saa7706h_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc) +{ + switch (qc->id) { + case V4L2_CID_AUDIO_MUTE: + return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1); + } + return -EINVAL; +} + +static int saa7706h_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) +{ + struct saa7706h_state *state = to_state(sd); + + switch (ctrl->id) { + case V4L2_CID_AUDIO_MUTE: + ctrl->value = state->muted; + return 0; + } + return -EINVAL; +} + +static int saa7706h_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) +{ + switch (ctrl->id) { + case V4L2_CID_AUDIO_MUTE: + if (ctrl->value) + return saa7706h_mute(sd); + return saa7706h_unmute(sd); + } + return -EINVAL; +} + +static int saa7706h_g_chip_ident(struct v4l2_subdev *sd, + struct v4l2_dbg_chip_ident *chip) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + + return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_SAA7706H, 0); +} + +static const struct v4l2_subdev_core_ops saa7706h_core_ops = { + .g_chip_ident = saa7706h_g_chip_ident, + .queryctrl = saa7706h_queryctrl, + .g_ctrl = saa7706h_g_ctrl, + .s_ctrl = saa7706h_s_ctrl, +}; + +static const struct v4l2_subdev_ops saa7706h_ops = { + .core = &saa7706h_core_ops, +}; + +/* + * Generic i2c probe + * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1' + */ + +static int saa7706h_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct saa7706h_state *state; + struct v4l2_subdev *sd; + int err; + + /* Check if the adapter supports the needed features */ + if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) + return -EIO; + + v4l_info(client, "chip found @ 0x%02x (%s)\n", + client->addr << 1, client->adapter->name); + + state = kzalloc(sizeof(struct saa7706h_state), GFP_KERNEL); + if (state == NULL) + return -ENOMEM; + sd = &state->sd; + v4l2_i2c_subdev_init(sd, client, &saa7706h_ops); + + /* check the rom versions */ + err = saa7706h_get_reg16(sd, SAA7706H_DSP1_ROM_VER); + if (err < 0) + goto err; + if (err != SUPPORTED_DSP1_ROM_VER) + v4l2_warn(sd, "Unknown DSP1 ROM code version: 0x%x\n", err); + + state->muted = 1; + + /* startup in a muted state */ + err = saa7706h_mute(sd); + if (err) + goto err; + + return 0; + +err: + v4l2_device_unregister_subdev(sd); + kfree(to_state(sd)); + + printk(KERN_ERR DRIVER_NAME ": Failed to probe: %d\n", err); + + return err; +} + +static int saa7706h_remove(struct i2c_client *client) +{ + struct v4l2_subdev *sd = i2c_get_clientdata(client); + + saa7706h_mute(sd); + v4l2_device_unregister_subdev(sd); + kfree(to_state(sd)); + return 0; +} + +static const struct i2c_device_id saa7706h_id[] = { + {DRIVER_NAME, 0}, + {}, +}; + +MODULE_DEVICE_TABLE(i2c, saa7706h_id); + +static struct i2c_driver saa7706h_driver = { + .driver = { + .owner = THIS_MODULE, + .name = DRIVER_NAME, + }, + .probe = saa7706h_probe, + .remove = saa7706h_remove, + .id_table = saa7706h_id, +}; + +module_i2c_driver(saa7706h_driver); + +MODULE_DESCRIPTION("SAA7706H Car Radio DSP driver"); +MODULE_AUTHOR("Mocean Laboratories"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/media/radio/si470x/Kconfig b/drivers/media/radio/si470x/Kconfig new file mode 100644 index 0000000..be1b4fc --- /dev/null +++ b/drivers/media/radio/si470x/Kconfig @@ -0,0 +1,39 @@ +config USB_SI470X + tristate "Silicon Labs Si470x FM Radio Receiver support with USB" + depends on m + depends on USB && RADIO_SI470X + ---help--- + This is a driver for USB devices with the Silicon Labs SI470x + chip. Currently these devices are known to work: + - 10c4:818a: Silicon Labs USB FM Radio Reference Design + - 06e1:a155: ADS/Tech FM Radio Receiver (formerly Instant FM Music) + - 1b80:d700: KWorld USB FM Radio SnapMusic Mobile 700 (FM700) + - 10c5:819a: Sanei Electric FM USB Radio (aka DealExtreme.com PCear) + + Sound is provided by the ALSA USB Audio/MIDI driver. Therefore + if you don't want to use the device solely for RDS receiving, + it is recommended to also select SND_USB_AUDIO. + + Please have a look at the documentation, especially on how + to redirect the audio stream from the radio to your sound device: + Documentation/video4linux/si470x.txt + + Say Y here if you want to connect this type of radio to your + computer's USB port. + + To compile this driver as a module, choose M here: the + module will be called radio-usb-si470x. + +config I2C_SI470X + tristate "Silicon Labs Si470x FM Radio Receiver support with I2C" + depends on m + depends on I2C && RADIO_SI470X && !USB_SI470X + ---help--- + This is a driver for I2C devices with the Silicon Labs SI470x + chip. + + Say Y here if you want to connect this type of radio to your + computer's I2C port. + + To compile this driver as a module, choose M here: the + module will be called radio-i2c-si470x. diff --git a/drivers/media/radio/si470x/Makefile b/drivers/media/radio/si470x/Makefile new file mode 100644 index 0000000..c2a7c7a --- /dev/null +++ b/drivers/media/radio/si470x/Makefile @@ -0,0 +1,9 @@ +# +# Makefile for radios with Silicon Labs Si470x FM Radio Receivers +# + +radio-usb-si470x-objs := radio-si470x-usb.o radio-si470x-common.o +radio-i2c-si470x-objs := radio-si470x-i2c.o radio-si470x-common.o + +obj-$(CPTCFG_USB_SI470X) += radio-usb-si470x.o +obj-$(CPTCFG_I2C_SI470X) += radio-i2c-si470x.o diff --git a/drivers/media/radio/si470x/radio-si470x-common.c b/drivers/media/radio/si470x/radio-si470x-common.c new file mode 100644 index 0000000..5c57e5b --- /dev/null +++ b/drivers/media/radio/si470x/radio-si470x-common.c @@ -0,0 +1,759 @@ +/* + * drivers/media/radio/si470x/radio-si470x-common.c + * + * Driver for radios with Silicon Labs Si470x FM Radio Receivers + * + * Copyright (c) 2009 Tobias Lorenz <tobias.lorenz@gmx.net> + * Copyright (c) 2012 Hans de Goede <hdegoede@redhat.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + + +/* + * History: + * 2008-01-12 Tobias Lorenz <tobias.lorenz@gmx.net> + * Version 1.0.0 + * - First working version + * 2008-01-13 Tobias Lorenz <tobias.lorenz@gmx.net> + * Version 1.0.1 + * - Improved error handling, every function now returns errno + * - Improved multi user access (start/mute/stop) + * - Channel doesn't get lost anymore after start/mute/stop + * - RDS support added (polling mode via interrupt EP 1) + * - marked default module parameters with *value* + * - switched from bit structs to bit masks + * - header file cleaned and integrated + * 2008-01-14 Tobias Lorenz <tobias.lorenz@gmx.net> + * Version 1.0.2 + * - hex values are now lower case + * - commented USB ID for ADS/Tech moved on todo list + * - blacklisted si470x in hid-quirks.c + * - rds buffer handling functions integrated into *_work, *_read + * - rds_command in si470x_poll exchanged against simple retval + * - check for firmware version 15 + * - code order and prototypes still remain the same + * - spacing and bottom of band codes remain the same + * 2008-01-16 Tobias Lorenz <tobias.lorenz@gmx.net> + * Version 1.0.3 + * - code reordered to avoid function prototypes + * - switch/case defaults are now more user-friendly + * - unified comment style + * - applied all checkpatch.pl v1.12 suggestions + * except the warning about the too long lines with bit comments + * - renamed FMRADIO to RADIO to cut line length (checkpatch.pl) + * 2008-01-22 Tobias Lorenz <tobias.lorenz@gmx.net> + * Version 1.0.4 + * - avoid poss. locking when doing copy_to_user which may sleep + * - RDS is automatically activated on read now + * - code cleaned of unnecessary rds_commands + * - USB Vendor/Product ID for ADS/Tech FM Radio Receiver verified + * (thanks to Guillaume RAMOUSSE) + * 2008-01-27 Tobias Lorenz <tobias.lorenz@gmx.net> + * Version 1.0.5 + * - number of seek_retries changed to tune_timeout + * - fixed problem with incomplete tune operations by own buffers + * - optimization of variables and printf types + * - improved error logging + * 2008-01-31 Tobias Lorenz <tobias.lorenz@gmx.net> + * Oliver Neukum <oliver@neukum.org> + * Version 1.0.6 + * - fixed coverity checker warnings in *_usb_driver_disconnect + * - probe()/open() race by correct ordering in probe() + * - DMA coherency rules by separate allocation of all buffers + * - use of endianness macros + * - abuse of spinlock, replaced by mutex + * - racy handling of timer in disconnect, + * replaced by delayed_work + * - racy interruptible_sleep_on(), + * replaced with wait_event_interruptible() + * - handle signals in read() + * 2008-02-08 Tobias Lorenz <tobias.lorenz@gmx.net> + * Oliver Neukum <oliver@neukum.org> + * Version 1.0.7 + * - usb autosuspend support + * - unplugging fixed + * 2008-05-07 Tobias Lorenz <tobias.lorenz@gmx.net> + * Version 1.0.8 + * - hardware frequency seek support + * - afc indication + * - more safety checks, let si470x_get_freq return errno + * - vidioc behavior corrected according to v4l2 spec + * 2008-10-20 Alexey Klimov <klimov.linux@gmail.com> + * - add support for KWorld USB FM Radio FM700 + * - blacklisted KWorld radio in hid-core.c and hid-ids.h + * 2008-12-03 Mark Lord <mlord@pobox.com> + * - add support for DealExtreme USB Radio + * 2009-01-31 Bob Ross <pigiron@gmx.com> + * - correction of stereo detection/setting + * - correction of signal strength indicator scaling + * 2009-01-31 Rick Bronson <rick@efn.org> + * Tobias Lorenz <tobias.lorenz@gmx.net> + * - add LED status output + * - get HW/SW version from scratchpad + * 2009-06-16 Edouard Lafargue <edouard@lafargue.name> + * Version 1.0.10 + * - add support for interrupt mode for RDS endpoint, + * instead of polling. + * Improves RDS reception significantly + */ + + +/* kernel includes */ +#include "radio-si470x.h" + + + +/************************************************************************** + * Module Parameters + **************************************************************************/ + +/* Spacing (kHz) */ +/* 0: 200 kHz (USA, Australia) */ +/* 1: 100 kHz (Europe, Japan) */ +/* 2: 50 kHz */ +static unsigned short space = 2; +module_param(space, ushort, 0444); +MODULE_PARM_DESC(space, "Spacing: 0=200kHz 1=100kHz *2=50kHz*"); + +/* De-emphasis */ +/* 0: 75 us (USA) */ +/* 1: 50 us (Europe, Australia, Japan) */ +static unsigned short de = 1; +module_param(de, ushort, 0444); +MODULE_PARM_DESC(de, "De-emphasis: 0=75us *1=50us*"); + +/* Tune timeout */ +static unsigned int tune_timeout = 3000; +module_param(tune_timeout, uint, 0644); +MODULE_PARM_DESC(tune_timeout, "Tune timeout: *3000*"); + +/* Seek timeout */ +static unsigned int seek_timeout = 5000; +module_param(seek_timeout, uint, 0644); +MODULE_PARM_DESC(seek_timeout, "Seek timeout: *5000*"); + +static const struct v4l2_frequency_band bands[] = { + { + .type = V4L2_TUNER_RADIO, + .index = 0, + .capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO | + V4L2_TUNER_CAP_RDS | V4L2_TUNER_CAP_RDS_BLOCK_IO | + V4L2_TUNER_CAP_FREQ_BANDS | + V4L2_TUNER_CAP_HWSEEK_BOUNDED | + V4L2_TUNER_CAP_HWSEEK_WRAP, + .rangelow = 87500 * 16, + .rangehigh = 108000 * 16, + .modulation = V4L2_BAND_MODULATION_FM, + }, + { + .type = V4L2_TUNER_RADIO, + .index = 1, + .capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO | + V4L2_TUNER_CAP_RDS | V4L2_TUNER_CAP_RDS_BLOCK_IO | + V4L2_TUNER_CAP_FREQ_BANDS | + V4L2_TUNER_CAP_HWSEEK_BOUNDED | + V4L2_TUNER_CAP_HWSEEK_WRAP, + .rangelow = 76000 * 16, + .rangehigh = 108000 * 16, + .modulation = V4L2_BAND_MODULATION_FM, + }, + { + .type = V4L2_TUNER_RADIO, + .index = 2, + .capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO | + V4L2_TUNER_CAP_RDS | V4L2_TUNER_CAP_RDS_BLOCK_IO | + V4L2_TUNER_CAP_FREQ_BANDS | + V4L2_TUNER_CAP_HWSEEK_BOUNDED | + V4L2_TUNER_CAP_HWSEEK_WRAP, + .rangelow = 76000 * 16, + .rangehigh = 90000 * 16, + .modulation = V4L2_BAND_MODULATION_FM, + }, +}; + +/************************************************************************** + * Generic Functions + **************************************************************************/ + +/* + * si470x_set_band - set the band + */ +static int si470x_set_band(struct si470x_device *radio, int band) +{ + if (radio->band == band) + return 0; + + radio->band = band; + radio->registers[SYSCONFIG2] &= ~SYSCONFIG2_BAND; + radio->registers[SYSCONFIG2] |= radio->band << 6; + return si470x_set_register(radio, SYSCONFIG2); +} + +/* + * si470x_set_chan - set the channel + */ +static int si470x_set_chan(struct si470x_device *radio, unsigned short chan) +{ + int retval; + bool timed_out = 0; + + /* start tuning */ + radio->registers[CHANNEL] &= ~CHANNEL_CHAN; + radio->registers[CHANNEL] |= CHANNEL_TUNE | chan; + retval = si470x_set_register(radio, CHANNEL); + if (retval < 0) + goto done; + + /* wait till tune operation has completed */ + INIT_COMPLETION(radio->completion); + retval = wait_for_completion_timeout(&radio->completion, + msecs_to_jiffies(tune_timeout)); + if (!retval) + timed_out = true; + + if ((radio->registers[STATUSRSSI] & STATUSRSSI_STC) == 0) + dev_warn(&radio->videodev.dev, "tune does not complete\n"); + if (timed_out) + dev_warn(&radio->videodev.dev, + "tune timed out after %u ms\n", tune_timeout); + + /* stop tuning */ + radio->registers[CHANNEL] &= ~CHANNEL_TUNE; + retval = si470x_set_register(radio, CHANNEL); + +done: + return retval; +} + +/* + * si470x_get_step - get channel spacing + */ +static unsigned int si470x_get_step(struct si470x_device *radio) +{ + /* Spacing (kHz) */ + switch ((radio->registers[SYSCONFIG2] & SYSCONFIG2_SPACE) >> 4) { + /* 0: 200 kHz (USA, Australia) */ + case 0: + return 200 * 16; + /* 1: 100 kHz (Europe, Japan) */ + case 1: + return 100 * 16; + /* 2: 50 kHz */ + default: + return 50 * 16; + }; +} + + +/* + * si470x_get_freq - get the frequency + */ +static int si470x_get_freq(struct si470x_device *radio, unsigned int *freq) +{ + int chan, retval; + + /* read channel */ + retval = si470x_get_register(radio, READCHAN); + chan = radio->registers[READCHAN] & READCHAN_READCHAN; + + /* Frequency (MHz) = Spacing (kHz) x Channel + Bottom of Band (MHz) */ + *freq = chan * si470x_get_step(radio) + bands[radio->band].rangelow; + + return retval; +} + + +/* + * si470x_set_freq - set the frequency + */ +int si470x_set_freq(struct si470x_device *radio, unsigned int freq) +{ + unsigned short chan; + + freq = clamp(freq, bands[radio->band].rangelow, + bands[radio->band].rangehigh); + /* Chan = [ Freq (Mhz) - Bottom of Band (MHz) ] / Spacing (kHz) */ + chan = (freq - bands[radio->band].rangelow) / si470x_get_step(radio); + + return si470x_set_chan(radio, chan); +} + + +/* + * si470x_set_seek - set seek + */ +static int si470x_set_seek(struct si470x_device *radio, + const struct v4l2_hw_freq_seek *seek) +{ + int band, retval; + unsigned int freq; + bool timed_out = 0; + + /* set band */ + if (seek->rangelow || seek->rangehigh) { + for (band = 0; band < ARRAY_SIZE(bands); band++) { + if (bands[band].rangelow == seek->rangelow && + bands[band].rangehigh == seek->rangehigh) + break; + } + if (band == ARRAY_SIZE(bands)) + return -EINVAL; /* No matching band found */ + } else + band = 1; /* If nothing is specified seek 76 - 108 Mhz */ + + if (radio->band != band) { + retval = si470x_get_freq(radio, &freq); + if (retval) + return retval; + retval = si470x_set_band(radio, band); + if (retval) + return retval; + retval = si470x_set_freq(radio, freq); + if (retval) + return retval; + } + + /* start seeking */ + radio->registers[POWERCFG] |= POWERCFG_SEEK; + if (seek->wrap_around) + radio->registers[POWERCFG] &= ~POWERCFG_SKMODE; + else + radio->registers[POWERCFG] |= POWERCFG_SKMODE; + if (seek->seek_upward) + radio->registers[POWERCFG] |= POWERCFG_SEEKUP; + else + radio->registers[POWERCFG] &= ~POWERCFG_SEEKUP; + retval = si470x_set_register(radio, POWERCFG); + if (retval < 0) + return retval; + + /* wait till tune operation has completed */ + INIT_COMPLETION(radio->completion); + retval = wait_for_completion_timeout(&radio->completion, + msecs_to_jiffies(seek_timeout)); + if (!retval) + timed_out = true; + + if ((radio->registers[STATUSRSSI] & STATUSRSSI_STC) == 0) + dev_warn(&radio->videodev.dev, "seek does not complete\n"); + if (radio->registers[STATUSRSSI] & STATUSRSSI_SF) + dev_warn(&radio->videodev.dev, + "seek failed / band limit reached\n"); + + /* stop seeking */ + radio->registers[POWERCFG] &= ~POWERCFG_SEEK; + retval = si470x_set_register(radio, POWERCFG); + + /* try again, if timed out */ + if (retval == 0 && timed_out) + return -ENODATA; + return retval; +} + + +/* + * si470x_start - switch on radio + */ +int si470x_start(struct si470x_device *radio) +{ + int retval; + + /* powercfg */ + radio->registers[POWERCFG] = + POWERCFG_DMUTE | POWERCFG_ENABLE | POWERCFG_RDSM; + retval = si470x_set_register(radio, POWERCFG); + if (retval < 0) + goto done; + + /* sysconfig 1 */ + radio->registers[SYSCONFIG1] = + (de << 11) & SYSCONFIG1_DE; /* DE*/ + retval = si470x_set_register(radio, SYSCONFIG1); + if (retval < 0) + goto done; + + /* sysconfig 2 */ + radio->registers[SYSCONFIG2] = + (0x1f << 8) | /* SEEKTH */ + ((radio->band << 6) & SYSCONFIG2_BAND) |/* BAND */ + ((space << 4) & SYSCONFIG2_SPACE) | /* SPACE */ + 15; /* VOLUME (max) */ + retval = si470x_set_register(radio, SYSCONFIG2); + if (retval < 0) + goto done; + + /* reset last channel */ + retval = si470x_set_chan(radio, + radio->registers[CHANNEL] & CHANNEL_CHAN); + +done: + return retval; +} + + +/* + * si470x_stop - switch off radio + */ +int si470x_stop(struct si470x_device *radio) +{ + int retval; + + /* sysconfig 1 */ + radio->registers[SYSCONFIG1] &= ~SYSCONFIG1_RDS; + retval = si470x_set_register(radio, SYSCONFIG1); + if (retval < 0) + goto done; + + /* powercfg */ + radio->registers[POWERCFG] &= ~POWERCFG_DMUTE; + /* POWERCFG_ENABLE has to automatically go low */ + radio->registers[POWERCFG] |= POWERCFG_ENABLE | POWERCFG_DISABLE; + retval = si470x_set_register(radio, POWERCFG); + +done: + return retval; +} + + +/* + * si470x_rds_on - switch on rds reception + */ +static int si470x_rds_on(struct si470x_device *radio) +{ + int retval; + + /* sysconfig 1 */ + radio->registers[SYSCONFIG1] |= SYSCONFIG1_RDS; + retval = si470x_set_register(radio, SYSCONFIG1); + if (retval < 0) + radio->registers[SYSCONFIG1] &= ~SYSCONFIG1_RDS; + + return retval; +} + + + +/************************************************************************** + * File Operations Interface + **************************************************************************/ + +/* + * si470x_fops_read - read RDS data + */ +static ssize_t si470x_fops_read(struct file *file, char __user *buf, + size_t count, loff_t *ppos) +{ + struct si470x_device *radio = video_drvdata(file); + int retval = 0; + unsigned int block_count = 0; + + /* switch on rds reception */ + if ((radio->registers[SYSCONFIG1] & SYSCONFIG1_RDS) == 0) + si470x_rds_on(radio); + + /* block if no new data available */ + while (radio->wr_index == radio->rd_index) { + if (file->f_flags & O_NONBLOCK) { + retval = -EWOULDBLOCK; + goto done; + } + if (wait_event_interruptible(radio->read_queue, + radio->wr_index != radio->rd_index) < 0) { + retval = -EINTR; + goto done; + } + } + + /* calculate block count from byte count */ + count /= 3; + + /* copy RDS block out of internal buffer and to user buffer */ + while (block_count < count) { + if (radio->rd_index == radio->wr_index) + break; + + /* always transfer rds complete blocks */ + if (copy_to_user(buf, &radio->buffer[radio->rd_index], 3)) + /* retval = -EFAULT; */ + break; + + /* increment and wrap read pointer */ + radio->rd_index += 3; + if (radio->rd_index >= radio->buf_size) + radio->rd_index = 0; + + /* increment counters */ + block_count++; + buf += 3; + retval += 3; + } + +done: + return retval; +} + + +/* + * si470x_fops_poll - poll RDS data + */ +static unsigned int si470x_fops_poll(struct file *file, + struct poll_table_struct *pts) +{ + struct si470x_device *radio = video_drvdata(file); + unsigned long req_events = poll_requested_events(pts); + int retval = v4l2_ctrl_poll(file, pts); + + if (req_events & (POLLIN | POLLRDNORM)) { + /* switch on rds reception */ + if ((radio->registers[SYSCONFIG1] & SYSCONFIG1_RDS) == 0) + si470x_rds_on(radio); + + poll_wait(file, &radio->read_queue, pts); + + if (radio->rd_index != radio->wr_index) + retval |= POLLIN | POLLRDNORM; + } + + return retval; +} + + +/* + * si470x_fops - file operations interface + */ +static const struct v4l2_file_operations si470x_fops = { + .owner = THIS_MODULE, + .read = si470x_fops_read, + .poll = si470x_fops_poll, + .unlocked_ioctl = video_ioctl2, + .open = si470x_fops_open, + .release = si470x_fops_release, +}; + + + +/************************************************************************** + * Video4Linux Interface + **************************************************************************/ + + +static int si470x_s_ctrl(struct v4l2_ctrl *ctrl) +{ + struct si470x_device *radio = + container_of(ctrl->handler, struct si470x_device, hdl); + + switch (ctrl->id) { + case V4L2_CID_AUDIO_VOLUME: + radio->registers[SYSCONFIG2] &= ~SYSCONFIG2_VOLUME; + radio->registers[SYSCONFIG2] |= ctrl->val; + return si470x_set_register(radio, SYSCONFIG2); + case V4L2_CID_AUDIO_MUTE: + if (ctrl->val) + radio->registers[POWERCFG] &= ~POWERCFG_DMUTE; + else + radio->registers[POWERCFG] |= POWERCFG_DMUTE; + return si470x_set_register(radio, POWERCFG); + default: + return -EINVAL; + } +} + + +/* + * si470x_vidioc_g_tuner - get tuner attributes + */ +static int si470x_vidioc_g_tuner(struct file *file, void *priv, + struct v4l2_tuner *tuner) +{ + struct si470x_device *radio = video_drvdata(file); + int retval = 0; + + if (tuner->index != 0) + return -EINVAL; + + if (!radio->status_rssi_auto_update) { + retval = si470x_get_register(radio, STATUSRSSI); + if (retval < 0) + return retval; + } + + /* driver constants */ + strcpy(tuner->name, "FM"); + tuner->type = V4L2_TUNER_RADIO; + tuner->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO | + V4L2_TUNER_CAP_RDS | V4L2_TUNER_CAP_RDS_BLOCK_IO | + V4L2_TUNER_CAP_HWSEEK_BOUNDED | + V4L2_TUNER_CAP_HWSEEK_WRAP; + tuner->rangelow = 76 * FREQ_MUL; + tuner->rangehigh = 108 * FREQ_MUL; + + /* stereo indicator == stereo (instead of mono) */ + if ((radio->registers[STATUSRSSI] & STATUSRSSI_ST) == 0) + tuner->rxsubchans = V4L2_TUNER_SUB_MONO; + else + tuner->rxsubchans = V4L2_TUNER_SUB_STEREO; + /* If there is a reliable method of detecting an RDS channel, + then this code should check for that before setting this + RDS subchannel. */ + tuner->rxsubchans |= V4L2_TUNER_SUB_RDS; + + /* mono/stereo selector */ + if ((radio->registers[POWERCFG] & POWERCFG_MONO) == 0) + tuner->audmode = V4L2_TUNER_MODE_STEREO; + else + tuner->audmode = V4L2_TUNER_MODE_MONO; + + /* min is worst, max is best; signal:0..0xffff; rssi: 0..0xff */ + /* measured in units of dbµV in 1 db increments (max at ~75 dbµV) */ + tuner->signal = (radio->registers[STATUSRSSI] & STATUSRSSI_RSSI); + /* the ideal factor is 0xffff/75 = 873,8 */ + tuner->signal = (tuner->signal * 873) + (8 * tuner->signal / 10); + if (tuner->signal > 0xffff) + tuner->signal = 0xffff; + + /* automatic frequency control: -1: freq to low, 1 freq to high */ + /* AFCRL does only indicate that freq. differs, not if too low/high */ + tuner->afc = (radio->registers[STATUSRSSI] & STATUSRSSI_AFCRL) ? 1 : 0; + + return retval; +} + + +/* + * si470x_vidioc_s_tuner - set tuner attributes + */ +static int si470x_vidioc_s_tuner(struct file *file, void *priv, + const struct v4l2_tuner *tuner) +{ + struct si470x_device *radio = video_drvdata(file); + + if (tuner->index != 0) + return -EINVAL; + + /* mono/stereo selector */ + switch (tuner->audmode) { + case V4L2_TUNER_MODE_MONO: + radio->registers[POWERCFG] |= POWERCFG_MONO; /* force mono */ + break; + case V4L2_TUNER_MODE_STEREO: + default: + radio->registers[POWERCFG] &= ~POWERCFG_MONO; /* try stereo */ + break; + } + + return si470x_set_register(radio, POWERCFG); +} + + +/* + * si470x_vidioc_g_frequency - get tuner or modulator radio frequency + */ +static int si470x_vidioc_g_frequency(struct file *file, void *priv, + struct v4l2_frequency *freq) +{ + struct si470x_device *radio = video_drvdata(file); + + if (freq->tuner != 0) + return -EINVAL; + + freq->type = V4L2_TUNER_RADIO; + return si470x_get_freq(radio, &freq->frequency); +} + + +/* + * si470x_vidioc_s_frequency - set tuner or modulator radio frequency + */ +static int si470x_vidioc_s_frequency(struct file *file, void *priv, + const struct v4l2_frequency *freq) +{ + struct si470x_device *radio = video_drvdata(file); + int retval; + + if (freq->tuner != 0) + return -EINVAL; + + if (freq->frequency < bands[radio->band].rangelow || + freq->frequency > bands[radio->band].rangehigh) { + /* Switch to band 1 which covers everything we support */ + retval = si470x_set_band(radio, 1); + if (retval) + return retval; + } + return si470x_set_freq(radio, freq->frequency); +} + + +/* + * si470x_vidioc_s_hw_freq_seek - set hardware frequency seek + */ +static int si470x_vidioc_s_hw_freq_seek(struct file *file, void *priv, + const struct v4l2_hw_freq_seek *seek) +{ + struct si470x_device *radio = video_drvdata(file); + + if (seek->tuner != 0) + return -EINVAL; + + if (file->f_flags & O_NONBLOCK) + return -EWOULDBLOCK; + + return si470x_set_seek(radio, seek); +} + +/* + * si470x_vidioc_enum_freq_bands - enumerate supported bands + */ +static int si470x_vidioc_enum_freq_bands(struct file *file, void *priv, + struct v4l2_frequency_band *band) +{ + if (band->tuner != 0) + return -EINVAL; + if (band->index >= ARRAY_SIZE(bands)) + return -EINVAL; + *band = bands[band->index]; + return 0; +} + +const struct v4l2_ctrl_ops si470x_ctrl_ops = { + .s_ctrl = si470x_s_ctrl, +}; + +/* + * si470x_ioctl_ops - video device ioctl operations + */ +static const struct v4l2_ioctl_ops si470x_ioctl_ops = { + .vidioc_querycap = si470x_vidioc_querycap, + .vidioc_g_tuner = si470x_vidioc_g_tuner, + .vidioc_s_tuner = si470x_vidioc_s_tuner, + .vidioc_g_frequency = si470x_vidioc_g_frequency, + .vidioc_s_frequency = si470x_vidioc_s_frequency, + .vidioc_s_hw_freq_seek = si470x_vidioc_s_hw_freq_seek, + .vidioc_enum_freq_bands = si470x_vidioc_enum_freq_bands, + .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, + .vidioc_unsubscribe_event = v4l2_event_unsubscribe, +}; + + +/* + * si470x_viddev_template - video device interface + */ +struct video_device si470x_viddev_template = { + .fops = &si470x_fops, + .name = DRIVER_NAME, + .release = video_device_release_empty, + .ioctl_ops = &si470x_ioctl_ops, +}; diff --git a/drivers/media/radio/si470x/radio-si470x-i2c.c b/drivers/media/radio/si470x/radio-si470x-i2c.c new file mode 100644 index 0000000..e5fc9ac --- /dev/null +++ b/drivers/media/radio/si470x/radio-si470x-i2c.c @@ -0,0 +1,526 @@ +/* + * drivers/media/radio/si470x/radio-si470x-i2c.c + * + * I2C driver for radios with Silicon Labs Si470x FM Radio Receivers + * + * Copyright (c) 2009 Samsung Electronics Co.Ltd + * Author: Joonyoung Shim <jy0922.shim@samsung.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + + +/* driver definitions */ +#define DRIVER_AUTHOR "Joonyoung Shim <jy0922.shim@samsung.com>"; +#define DRIVER_CARD "Silicon Labs Si470x FM Radio Receiver" +#define DRIVER_DESC "I2C radio driver for Si470x FM Radio Receivers" +#define DRIVER_VERSION "1.0.2" + +/* kernel includes */ +#include <linux/i2c.h> +#include <linux/slab.h> +#include <linux/delay.h> +#include <linux/interrupt.h> + +#include "radio-si470x.h" + + +/* I2C Device ID List */ +static const struct i2c_device_id si470x_i2c_id[] = { + /* Generic Entry */ + { "si470x", 0 }, + /* Terminating entry */ + { } +}; +MODULE_DEVICE_TABLE(i2c, si470x_i2c_id); + + + +/************************************************************************** + * Module Parameters + **************************************************************************/ + +/* Radio Nr */ +static int radio_nr = -1; +module_param(radio_nr, int, 0444); +MODULE_PARM_DESC(radio_nr, "Radio Nr"); + +/* RDS buffer blocks */ +static unsigned int rds_buf = 100; +module_param(rds_buf, uint, 0444); +MODULE_PARM_DESC(rds_buf, "RDS buffer entries: *100*"); + +/* RDS maximum block errors */ +static unsigned short max_rds_errors = 1; +/* 0 means 0 errors requiring correction */ +/* 1 means 1-2 errors requiring correction (used by original USBRadio.exe) */ +/* 2 means 3-5 errors requiring correction */ +/* 3 means 6+ errors or errors in checkword, correction not possible */ +module_param(max_rds_errors, ushort, 0644); +MODULE_PARM_DESC(max_rds_errors, "RDS maximum block errors: *1*"); + + + +/************************************************************************** + * I2C Definitions + **************************************************************************/ + +/* Write starts with the upper byte of register 0x02 */ +#define WRITE_REG_NUM 8 +#define WRITE_INDEX(i) (i + 0x02) + +/* Read starts with the upper byte of register 0x0a */ +#define READ_REG_NUM RADIO_REGISTER_NUM +#define READ_INDEX(i) ((i + RADIO_REGISTER_NUM - 0x0a) % READ_REG_NUM) + + + +/************************************************************************** + * General Driver Functions - REGISTERs + **************************************************************************/ + +/* + * si470x_get_register - read register + */ +int si470x_get_register(struct si470x_device *radio, int regnr) +{ + u16 buf[READ_REG_NUM]; + struct i2c_msg msgs[1] = { + { + .addr = radio->client->addr, + .flags = I2C_M_RD, + .len = sizeof(u16) * READ_REG_NUM, + .buf = (void *)buf + }, + }; + + if (i2c_transfer(radio->client->adapter, msgs, 1) != 1) + return -EIO; + + radio->registers[regnr] = __be16_to_cpu(buf[READ_INDEX(regnr)]); + + return 0; +} + + +/* + * si470x_set_register - write register + */ +int si470x_set_register(struct si470x_device *radio, int regnr) +{ + int i; + u16 buf[WRITE_REG_NUM]; + struct i2c_msg msgs[1] = { + { + .addr = radio->client->addr, + .len = sizeof(u16) * WRITE_REG_NUM, + .buf = (void *)buf + }, + }; + + for (i = 0; i < WRITE_REG_NUM; i++) + buf[i] = __cpu_to_be16(radio->registers[WRITE_INDEX(i)]); + + if (i2c_transfer(radio->client->adapter, msgs, 1) != 1) + return -EIO; + + return 0; +} + + + +/************************************************************************** + * General Driver Functions - ENTIRE REGISTERS + **************************************************************************/ + +/* + * si470x_get_all_registers - read entire registers + */ +static int si470x_get_all_registers(struct si470x_device *radio) +{ + int i; + u16 buf[READ_REG_NUM]; + struct i2c_msg msgs[1] = { + { + .addr = radio->client->addr, + .flags = I2C_M_RD, + .len = sizeof(u16) * READ_REG_NUM, + .buf = (void *)buf + }, + }; + + if (i2c_transfer(radio->client->adapter, msgs, 1) != 1) + return -EIO; + + for (i = 0; i < READ_REG_NUM; i++) + radio->registers[i] = __be16_to_cpu(buf[READ_INDEX(i)]); + + return 0; +} + + + +/************************************************************************** + * File Operations Interface + **************************************************************************/ + +/* + * si470x_fops_open - file open + */ +int si470x_fops_open(struct file *file) +{ + struct si470x_device *radio = video_drvdata(file); + int retval = v4l2_fh_open(file); + + if (retval) + return retval; + + if (v4l2_fh_is_singular_file(file)) { + /* start radio */ + retval = si470x_start(radio); + if (retval < 0) + goto done; + + /* enable RDS / STC interrupt */ + radio->registers[SYSCONFIG1] |= SYSCONFIG1_RDSIEN; + radio->registers[SYSCONFIG1] |= SYSCONFIG1_STCIEN; + radio->registers[SYSCONFIG1] &= ~SYSCONFIG1_GPIO2; + radio->registers[SYSCONFIG1] |= 0x1 << 2; + retval = si470x_set_register(radio, SYSCONFIG1); + } + +done: + if (retval) + v4l2_fh_release(file); + return retval; +} + + +/* + * si470x_fops_release - file release + */ +int si470x_fops_release(struct file *file) +{ + struct si470x_device *radio = video_drvdata(file); + + if (v4l2_fh_is_singular_file(file)) + /* stop radio */ + si470x_stop(radio); + + return v4l2_fh_release(file); +} + + + +/************************************************************************** + * Video4Linux Interface + **************************************************************************/ + +/* + * si470x_vidioc_querycap - query device capabilities + */ +int si470x_vidioc_querycap(struct file *file, void *priv, + struct v4l2_capability *capability) +{ + strlcpy(capability->driver, DRIVER_NAME, sizeof(capability->driver)); + strlcpy(capability->card, DRIVER_CARD, sizeof(capability->card)); + capability->device_caps = V4L2_CAP_HW_FREQ_SEEK | V4L2_CAP_READWRITE | + V4L2_CAP_TUNER | V4L2_CAP_RADIO | V4L2_CAP_RDS_CAPTURE; + capability->capabilities = capability->device_caps | V4L2_CAP_DEVICE_CAPS; + + return 0; +} + + + +/************************************************************************** + * I2C Interface + **************************************************************************/ + +/* + * si470x_i2c_interrupt - interrupt handler + */ +static irqreturn_t si470x_i2c_interrupt(int irq, void *dev_id) +{ + struct si470x_device *radio = dev_id; + unsigned char regnr; + unsigned char blocknum; + unsigned short bler; /* rds block errors */ + unsigned short rds; + unsigned char tmpbuf[3]; + int retval = 0; + + /* check Seek/Tune Complete */ + retval = si470x_get_register(radio, STATUSRSSI); + if (retval < 0) + goto end; + + if (radio->registers[STATUSRSSI] & STATUSRSSI_STC) + complete(&radio->completion); + + /* safety checks */ + if ((radio->registers[SYSCONFIG1] & SYSCONFIG1_RDS) == 0) + goto end; + + /* Update RDS registers */ + for (regnr = 1; regnr < RDS_REGISTER_NUM; regnr++) { + retval = si470x_get_register(radio, STATUSRSSI + regnr); + if (retval < 0) + goto end; + } + + /* get rds blocks */ + if ((radio->registers[STATUSRSSI] & STATUSRSSI_RDSR) == 0) + /* No RDS group ready, better luck next time */ + goto end; + + for (blocknum = 0; blocknum < 4; blocknum++) { + switch (blocknum) { + default: + bler = (radio->registers[STATUSRSSI] & + STATUSRSSI_BLERA) >> 9; + rds = radio->registers[RDSA]; + break; + case 1: + bler = (radio->registers[READCHAN] & + READCHAN_BLERB) >> 14; + rds = radio->registers[RDSB]; + break; + case 2: + bler = (radio->registers[READCHAN] & + READCHAN_BLERC) >> 12; + rds = radio->registers[RDSC]; + break; + case 3: + bler = (radio->registers[READCHAN] & + READCHAN_BLERD) >> 10; + rds = radio->registers[RDSD]; + break; + } + + /* Fill the V4L2 RDS buffer */ + put_unaligned_le16(rds, &tmpbuf); + tmpbuf[2] = blocknum; /* offset name */ + tmpbuf[2] |= blocknum << 3; /* received offset */ + if (bler > max_rds_errors) + tmpbuf[2] |= 0x80; /* uncorrectable errors */ + else if (bler > 0) + tmpbuf[2] |= 0x40; /* corrected error(s) */ + + /* copy RDS block to internal buffer */ + memcpy(&radio->buffer[radio->wr_index], &tmpbuf, 3); + radio->wr_index += 3; + + /* wrap write pointer */ + if (radio->wr_index >= radio->buf_size) + radio->wr_index = 0; + + /* check for overflow */ + if (radio->wr_index == radio->rd_index) { + /* increment and wrap read pointer */ + radio->rd_index += 3; + if (radio->rd_index >= radio->buf_size) + radio->rd_index = 0; + } + } + + if (radio->wr_index != radio->rd_index) + wake_up_interruptible(&radio->read_queue); + +end: + return IRQ_HANDLED; +} + + +/* + * si470x_i2c_probe - probe for the device + */ +static int si470x_i2c_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct si470x_device *radio; + int retval = 0; + unsigned char version_warning = 0; + + /* private data allocation and initialization */ + radio = kzalloc(sizeof(struct si470x_device), GFP_KERNEL); + if (!radio) { + retval = -ENOMEM; + goto err_initial; + } + + radio->client = client; + radio->band = 1; /* Default to 76 - 108 MHz */ + mutex_init(&radio->lock); + init_completion(&radio->completion); + + /* video device initialization */ + radio->videodev = si470x_viddev_template; + video_set_drvdata(&radio->videodev, radio); + + /* power up : need 110ms */ + radio->registers[POWERCFG] = POWERCFG_ENABLE; + if (si470x_set_register(radio, POWERCFG) < 0) { + retval = -EIO; + goto err_radio; + } + msleep(110); + + /* get device and chip versions */ + if (si470x_get_all_registers(radio) < 0) { + retval = -EIO; + goto err_radio; + } + dev_info(&client->dev, "DeviceID=0x%4.4hx ChipID=0x%4.4hx\n", + radio->registers[DEVICEID], radio->registers[CHIPID]); + if ((radio->registers[CHIPID] & CHIPID_FIRMWARE) < RADIO_FW_VERSION) { + dev_warn(&client->dev, + "This driver is known to work with " + "firmware version %hu,\n", RADIO_FW_VERSION); + dev_warn(&client->dev, + "but the device has firmware version %hu.\n", + radio->registers[CHIPID] & CHIPID_FIRMWARE); + version_warning = 1; + } + + /* give out version warning */ + if (version_warning == 1) { + dev_warn(&client->dev, + "If you have some trouble using this driver,\n"); + dev_warn(&client->dev, + "please report to V4L ML at " + "linux-media@vger.kernel.org\n"); + } + + /* set initial frequency */ + si470x_set_freq(radio, 87.5 * FREQ_MUL); /* available in all regions */ + + /* rds buffer allocation */ + radio->buf_size = rds_buf * 3; + radio->buffer = kmalloc(radio->buf_size, GFP_KERNEL); + if (!radio->buffer) { + retval = -EIO; + goto err_radio; + } + + /* rds buffer configuration */ + radio->wr_index = 0; + radio->rd_index = 0; + init_waitqueue_head(&radio->read_queue); + + retval = request_threaded_irq(client->irq, NULL, si470x_i2c_interrupt, + IRQF_TRIGGER_FALLING, DRIVER_NAME, radio); + if (retval) { + dev_err(&client->dev, "Failed to register interrupt\n"); + goto err_rds; + } + + /* register video device */ + retval = video_register_device(&radio->videodev, VFL_TYPE_RADIO, + radio_nr); + if (retval) { + dev_warn(&client->dev, "Could not register video device\n"); + goto err_all; + } + i2c_set_clientdata(client, radio); + + return 0; +err_all: + free_irq(client->irq, radio); +err_rds: + kfree(radio->buffer); +err_radio: + kfree(radio); +err_initial: + return retval; +} + + +/* + * si470x_i2c_remove - remove the device + */ +static int si470x_i2c_remove(struct i2c_client *client) +{ + struct si470x_device *radio = i2c_get_clientdata(client); + + free_irq(client->irq, radio); + video_unregister_device(&radio->videodev); + kfree(radio); + + return 0; +} + + +#ifdef CONFIG_PM +/* + * si470x_i2c_suspend - suspend the device + */ +static int si470x_i2c_suspend(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct si470x_device *radio = i2c_get_clientdata(client); + + /* power down */ + radio->registers[POWERCFG] |= POWERCFG_DISABLE; + if (si470x_set_register(radio, POWERCFG) < 0) + return -EIO; + + return 0; +} + + +/* + * si470x_i2c_resume - resume the device + */ +static int si470x_i2c_resume(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct si470x_device *radio = i2c_get_clientdata(client); + + /* power up : need 110ms */ + radio->registers[POWERCFG] |= POWERCFG_ENABLE; + if (si470x_set_register(radio, POWERCFG) < 0) + return -EIO; + msleep(110); + + return 0; +} + +static SIMPLE_DEV_PM_OPS(si470x_i2c_pm, si470x_i2c_suspend, si470x_i2c_resume); +#endif + + +/* + * si470x_i2c_driver - i2c driver interface + */ +static struct i2c_driver si470x_i2c_driver = { + .driver = { + .name = "si470x", + .owner = THIS_MODULE, +#ifdef CONFIG_PM + .pm = &si470x_i2c_pm, +#endif + }, + .probe = si470x_i2c_probe, + .remove = si470x_i2c_remove, + .id_table = si470x_i2c_id, +}; + +module_i2c_driver(si470x_i2c_driver); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR(DRIVER_AUTHOR); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_VERSION(DRIVER_VERSION); diff --git a/drivers/media/radio/si470x/radio-si470x-usb.c b/drivers/media/radio/si470x/radio-si470x-usb.c new file mode 100644 index 0000000..62f3ede --- /dev/null +++ b/drivers/media/radio/si470x/radio-si470x-usb.c @@ -0,0 +1,849 @@ +/* + * drivers/media/radio/si470x/radio-si470x-usb.c + * + * USB driver for radios with Silicon Labs Si470x FM Radio Receivers + * + * Copyright (c) 2009 Tobias Lorenz <tobias.lorenz@gmx.net> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + + +/* + * ToDo: + * - add firmware download/update support + */ + + +/* driver definitions */ +#define DRIVER_AUTHOR "Tobias Lorenz <tobias.lorenz@gmx.net>" +#define DRIVER_CARD "Silicon Labs Si470x FM Radio Receiver" +#define DRIVER_DESC "USB radio driver for Si470x FM Radio Receivers" +#define DRIVER_VERSION "1.0.10" + +/* kernel includes */ +#include <linux/usb.h> +#include <linux/hid.h> +#include <linux/slab.h> + +#include "radio-si470x.h" + + +/* USB Device ID List */ +static struct usb_device_id si470x_usb_driver_id_table[] = { + /* Silicon Labs USB FM Radio Reference Design */ + { USB_DEVICE_AND_INTERFACE_INFO(0x10c4, 0x818a, USB_CLASS_HID, 0, 0) }, + /* ADS/Tech FM Radio Receiver (formerly Instant FM Music) */ + { USB_DEVICE_AND_INTERFACE_INFO(0x06e1, 0xa155, USB_CLASS_HID, 0, 0) }, + /* KWorld USB FM Radio SnapMusic Mobile 700 (FM700) */ + { USB_DEVICE_AND_INTERFACE_INFO(0x1b80, 0xd700, USB_CLASS_HID, 0, 0) }, + /* Sanei Electric, Inc. FM USB Radio (sold as DealExtreme.com PCear) */ + { USB_DEVICE_AND_INTERFACE_INFO(0x10c5, 0x819a, USB_CLASS_HID, 0, 0) }, + /* Axentia ALERT FM USB Receiver */ + { USB_DEVICE_AND_INTERFACE_INFO(0x12cf, 0x7111, USB_CLASS_HID, 0, 0) }, + /* Terminating entry */ + { } +}; +MODULE_DEVICE_TABLE(usb, si470x_usb_driver_id_table); + + + +/************************************************************************** + * Module Parameters + **************************************************************************/ + +/* Radio Nr */ +static int radio_nr = -1; +module_param(radio_nr, int, 0444); +MODULE_PARM_DESC(radio_nr, "Radio Nr"); + +/* USB timeout */ +static unsigned int usb_timeout = 500; +module_param(usb_timeout, uint, 0644); +MODULE_PARM_DESC(usb_timeout, "USB timeout (ms): *500*"); + +/* RDS buffer blocks */ +static unsigned int rds_buf = 100; +module_param(rds_buf, uint, 0444); +MODULE_PARM_DESC(rds_buf, "RDS buffer entries: *100*"); + +/* RDS maximum block errors */ +static unsigned short max_rds_errors = 1; +/* 0 means 0 errors requiring correction */ +/* 1 means 1-2 errors requiring correction (used by original USBRadio.exe) */ +/* 2 means 3-5 errors requiring correction */ +/* 3 means 6+ errors or errors in checkword, correction not possible */ +module_param(max_rds_errors, ushort, 0644); +MODULE_PARM_DESC(max_rds_errors, "RDS maximum block errors: *1*"); + + + +/************************************************************************** + * USB HID Reports + **************************************************************************/ + +/* Reports 1-16 give direct read/write access to the 16 Si470x registers */ +/* with the (REPORT_ID - 1) corresponding to the register address across USB */ +/* endpoint 0 using GET_REPORT and SET_REPORT */ +#define REGISTER_REPORT_SIZE (RADIO_REGISTER_SIZE + 1) +#define REGISTER_REPORT(reg) ((reg) + 1) + +/* Report 17 gives direct read/write access to the entire Si470x register */ +/* map across endpoint 0 using GET_REPORT and SET_REPORT */ +#define ENTIRE_REPORT_SIZE (RADIO_REGISTER_NUM * RADIO_REGISTER_SIZE + 1) +#define ENTIRE_REPORT 17 + +/* Report 18 is used to send the lowest 6 Si470x registers up the HID */ +/* interrupt endpoint 1 to Windows every 20 milliseconds for status */ +#define RDS_REPORT_SIZE (RDS_REGISTER_NUM * RADIO_REGISTER_SIZE + 1) +#define RDS_REPORT 18 + +/* Report 19: LED state */ +#define LED_REPORT_SIZE 3 +#define LED_REPORT 19 + +/* Report 19: stream */ +#define STREAM_REPORT_SIZE 3 +#define STREAM_REPORT 19 + +/* Report 20: scratch */ +#define SCRATCH_PAGE_SIZE 63 +#define SCRATCH_REPORT_SIZE (SCRATCH_PAGE_SIZE + 1) +#define SCRATCH_REPORT 20 + +/* Reports 19-22: flash upgrade of the C8051F321 */ +#define WRITE_REPORT_SIZE 4 +#define WRITE_REPORT 19 +#define FLASH_REPORT_SIZE 64 +#define FLASH_REPORT 20 +#define CRC_REPORT_SIZE 3 +#define CRC_REPORT 21 +#define RESPONSE_REPORT_SIZE 2 +#define RESPONSE_REPORT 22 + +/* Report 23: currently unused, but can accept 60 byte reports on the HID */ +/* interrupt out endpoint 2 every 1 millisecond */ +#define UNUSED_REPORT 23 + + + +/************************************************************************** + * Software/Hardware Versions from Scratch Page + **************************************************************************/ +#define RADIO_SW_VERSION_NOT_BOOTLOADABLE 6 +#define RADIO_SW_VERSION 1 +#define RADIO_HW_VERSION 1 + + + +/************************************************************************** + * LED State Definitions + **************************************************************************/ +#define LED_COMMAND 0x35 + +#define NO_CHANGE_LED 0x00 +#define ALL_COLOR_LED 0x01 /* streaming state */ +#define BLINK_GREEN_LED 0x02 /* connect state */ +#define BLINK_RED_LED 0x04 +#define BLINK_ORANGE_LED 0x10 /* disconnect state */ +#define SOLID_GREEN_LED 0x20 /* tuning/seeking state */ +#define SOLID_RED_LED 0x40 /* bootload state */ +#define SOLID_ORANGE_LED 0x80 + + + +/************************************************************************** + * Stream State Definitions + **************************************************************************/ +#define STREAM_COMMAND 0x36 +#define STREAM_VIDPID 0x00 +#define STREAM_AUDIO 0xff + + + +/************************************************************************** + * Bootloader / Flash Commands + **************************************************************************/ + +/* unique id sent to bootloader and required to put into a bootload state */ +#define UNIQUE_BL_ID 0x34 + +/* mask for the flash data */ +#define FLASH_DATA_MASK 0x55 + +/* bootloader commands */ +#define GET_SW_VERSION_COMMAND 0x00 +#define SET_PAGE_COMMAND 0x01 +#define ERASE_PAGE_COMMAND 0x02 +#define WRITE_PAGE_COMMAND 0x03 +#define CRC_ON_PAGE_COMMAND 0x04 +#define READ_FLASH_BYTE_COMMAND 0x05 +#define RESET_DEVICE_COMMAND 0x06 +#define GET_HW_VERSION_COMMAND 0x07 +#define BLANK 0xff + +/* bootloader command responses */ +#define COMMAND_OK 0x01 +#define COMMAND_FAILED 0x02 +#define COMMAND_PENDING 0x03 + + + +/************************************************************************** + * General Driver Functions - REGISTER_REPORTs + **************************************************************************/ + +/* + * si470x_get_report - receive a HID report + */ +static int si470x_get_report(struct si470x_device *radio, void *buf, int size) +{ + unsigned char *report = (unsigned char *) buf; + int retval; + + retval = usb_control_msg(radio->usbdev, + usb_rcvctrlpipe(radio->usbdev, 0), + HID_REQ_GET_REPORT, + USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN, + report[0], 2, + buf, size, usb_timeout); + + if (retval < 0) + dev_warn(&radio->intf->dev, + "si470x_get_report: usb_control_msg returned %d\n", + retval); + return retval; +} + + +/* + * si470x_set_report - send a HID report + */ +static int si470x_set_report(struct si470x_device *radio, void *buf, int size) +{ + unsigned char *report = (unsigned char *) buf; + int retval; + + retval = usb_control_msg(radio->usbdev, + usb_sndctrlpipe(radio->usbdev, 0), + HID_REQ_SET_REPORT, + USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_OUT, + report[0], 2, + buf, size, usb_timeout); + + if (retval < 0) + dev_warn(&radio->intf->dev, + "si470x_set_report: usb_control_msg returned %d\n", + retval); + return retval; +} + + +/* + * si470x_get_register - read register + */ +int si470x_get_register(struct si470x_device *radio, int regnr) +{ + unsigned char buf[REGISTER_REPORT_SIZE]; + int retval; + + buf[0] = REGISTER_REPORT(regnr); + + retval = si470x_get_report(radio, (void *) &buf, sizeof(buf)); + + if (retval >= 0) + radio->registers[regnr] = get_unaligned_be16(&buf[1]); + + return (retval < 0) ? -EINVAL : 0; +} + + +/* + * si470x_set_register - write register + */ +int si470x_set_register(struct si470x_device *radio, int regnr) +{ + unsigned char buf[REGISTER_REPORT_SIZE]; + int retval; + + buf[0] = REGISTER_REPORT(regnr); + put_unaligned_be16(radio->registers[regnr], &buf[1]); + + retval = si470x_set_report(radio, (void *) &buf, sizeof(buf)); + + return (retval < 0) ? -EINVAL : 0; +} + + + +/************************************************************************** + * General Driver Functions - ENTIRE_REPORT + **************************************************************************/ + +/* + * si470x_get_all_registers - read entire registers + */ +static int si470x_get_all_registers(struct si470x_device *radio) +{ + unsigned char buf[ENTIRE_REPORT_SIZE]; + int retval; + unsigned char regnr; + + buf[0] = ENTIRE_REPORT; + + retval = si470x_get_report(radio, (void *) &buf, sizeof(buf)); + + if (retval >= 0) + for (regnr = 0; regnr < RADIO_REGISTER_NUM; regnr++) + radio->registers[regnr] = get_unaligned_be16( + &buf[regnr * RADIO_REGISTER_SIZE + 1]); + + return (retval < 0) ? -EINVAL : 0; +} + + + +/************************************************************************** + * General Driver Functions - LED_REPORT + **************************************************************************/ + +/* + * si470x_set_led_state - sets the led state + */ +static int si470x_set_led_state(struct si470x_device *radio, + unsigned char led_state) +{ + unsigned char buf[LED_REPORT_SIZE]; + int retval; + + buf[0] = LED_REPORT; + buf[1] = LED_COMMAND; + buf[2] = led_state; + + retval = si470x_set_report(radio, (void *) &buf, sizeof(buf)); + + return (retval < 0) ? -EINVAL : 0; +} + + + +/************************************************************************** + * General Driver Functions - SCRATCH_REPORT + **************************************************************************/ + +/* + * si470x_get_scratch_versions - gets the scratch page and version infos + */ +static int si470x_get_scratch_page_versions(struct si470x_device *radio) +{ + unsigned char buf[SCRATCH_REPORT_SIZE]; + int retval; + + buf[0] = SCRATCH_REPORT; + + retval = si470x_get_report(radio, (void *) &buf, sizeof(buf)); + + if (retval < 0) + dev_warn(&radio->intf->dev, "si470x_get_scratch: " + "si470x_get_report returned %d\n", retval); + else { + radio->software_version = buf[1]; + radio->hardware_version = buf[2]; + } + + return (retval < 0) ? -EINVAL : 0; +} + + + +/************************************************************************** + * RDS Driver Functions + **************************************************************************/ + +/* + * si470x_int_in_callback - rds callback and processing function + * + * TODO: do we need to use mutex locks in some sections? + */ +static void si470x_int_in_callback(struct urb *urb) +{ + struct si470x_device *radio = urb->context; + int retval; + unsigned char regnr; + unsigned char blocknum; + unsigned short bler; /* rds block errors */ + unsigned short rds; + unsigned char tmpbuf[3]; + + if (urb->status) { + if (urb->status == -ENOENT || + urb->status == -ECONNRESET || + urb->status == -ESHUTDOWN) { + return; + } else { + dev_warn(&radio->intf->dev, + "non-zero urb status (%d)\n", urb->status); + goto resubmit; /* Maybe we can recover. */ + } + } + + /* Sometimes the device returns len 0 packets */ + if (urb->actual_length != RDS_REPORT_SIZE) + goto resubmit; + + radio->registers[STATUSRSSI] = + get_unaligned_be16(&radio->int_in_buffer[1]); + + if (radio->registers[STATUSRSSI] & STATUSRSSI_STC) + complete(&radio->completion); + + if ((radio->registers[SYSCONFIG1] & SYSCONFIG1_RDS)) { + /* Update RDS registers with URB data */ + for (regnr = 1; regnr < RDS_REGISTER_NUM; regnr++) + radio->registers[STATUSRSSI + regnr] = + get_unaligned_be16(&radio->int_in_buffer[ + regnr * RADIO_REGISTER_SIZE + 1]); + /* get rds blocks */ + if ((radio->registers[STATUSRSSI] & STATUSRSSI_RDSR) == 0) { + /* No RDS group ready, better luck next time */ + goto resubmit; + } + if ((radio->registers[STATUSRSSI] & STATUSRSSI_RDSS) == 0) { + /* RDS decoder not synchronized */ + goto resubmit; + } + for (blocknum = 0; blocknum < 4; blocknum++) { + switch (blocknum) { + default: + bler = (radio->registers[STATUSRSSI] & + STATUSRSSI_BLERA) >> 9; + rds = radio->registers[RDSA]; + break; + case 1: + bler = (radio->registers[READCHAN] & + READCHAN_BLERB) >> 14; + rds = radio->registers[RDSB]; + break; + case 2: + bler = (radio->registers[READCHAN] & + READCHAN_BLERC) >> 12; + rds = radio->registers[RDSC]; + break; + case 3: + bler = (radio->registers[READCHAN] & + READCHAN_BLERD) >> 10; + rds = radio->registers[RDSD]; + break; + } + + /* Fill the V4L2 RDS buffer */ + put_unaligned_le16(rds, &tmpbuf); + tmpbuf[2] = blocknum; /* offset name */ + tmpbuf[2] |= blocknum << 3; /* received offset */ + if (bler > max_rds_errors) + tmpbuf[2] |= 0x80; /* uncorrectable errors */ + else if (bler > 0) + tmpbuf[2] |= 0x40; /* corrected error(s) */ + + /* copy RDS block to internal buffer */ + memcpy(&radio->buffer[radio->wr_index], &tmpbuf, 3); + radio->wr_index += 3; + + /* wrap write pointer */ + if (radio->wr_index >= radio->buf_size) + radio->wr_index = 0; + + /* check for overflow */ + if (radio->wr_index == radio->rd_index) { + /* increment and wrap read pointer */ + radio->rd_index += 3; + if (radio->rd_index >= radio->buf_size) + radio->rd_index = 0; + } + } + if (radio->wr_index != radio->rd_index) + wake_up_interruptible(&radio->read_queue); + } + +resubmit: + /* Resubmit if we're still running. */ + if (radio->int_in_running && radio->usbdev) { + retval = usb_submit_urb(radio->int_in_urb, GFP_ATOMIC); + if (retval) { + dev_warn(&radio->intf->dev, + "resubmitting urb failed (%d)", retval); + radio->int_in_running = 0; + } + } + radio->status_rssi_auto_update = radio->int_in_running; +} + + +int si470x_fops_open(struct file *file) +{ + return v4l2_fh_open(file); +} + +int si470x_fops_release(struct file *file) +{ + return v4l2_fh_release(file); +} + +static void si470x_usb_release(struct v4l2_device *v4l2_dev) +{ + struct si470x_device *radio = + container_of(v4l2_dev, struct si470x_device, v4l2_dev); + + usb_free_urb(radio->int_in_urb); + v4l2_ctrl_handler_free(&radio->hdl); + v4l2_device_unregister(&radio->v4l2_dev); + kfree(radio->int_in_buffer); + kfree(radio->buffer); + kfree(radio); +} + + +/************************************************************************** + * Video4Linux Interface + **************************************************************************/ + +/* + * si470x_vidioc_querycap - query device capabilities + */ +int si470x_vidioc_querycap(struct file *file, void *priv, + struct v4l2_capability *capability) +{ + struct si470x_device *radio = video_drvdata(file); + + strlcpy(capability->driver, DRIVER_NAME, sizeof(capability->driver)); + strlcpy(capability->card, DRIVER_CARD, sizeof(capability->card)); + usb_make_path(radio->usbdev, capability->bus_info, + sizeof(capability->bus_info)); + capability->device_caps = V4L2_CAP_HW_FREQ_SEEK | V4L2_CAP_READWRITE | + V4L2_CAP_TUNER | V4L2_CAP_RADIO | V4L2_CAP_RDS_CAPTURE; + capability->capabilities = capability->device_caps | V4L2_CAP_DEVICE_CAPS; + return 0; +} + + +static int si470x_start_usb(struct si470x_device *radio) +{ + int retval; + + /* initialize interrupt urb */ + usb_fill_int_urb(radio->int_in_urb, radio->usbdev, + usb_rcvintpipe(radio->usbdev, + radio->int_in_endpoint->bEndpointAddress), + radio->int_in_buffer, + le16_to_cpu(radio->int_in_endpoint->wMaxPacketSize), + si470x_int_in_callback, + radio, + radio->int_in_endpoint->bInterval); + + radio->int_in_running = 1; + mb(); + + retval = usb_submit_urb(radio->int_in_urb, GFP_KERNEL); + if (retval) { + dev_info(&radio->intf->dev, + "submitting int urb failed (%d)\n", retval); + radio->int_in_running = 0; + } + radio->status_rssi_auto_update = radio->int_in_running; + + /* start radio */ + retval = si470x_start(radio); + if (retval < 0) + return retval; + + v4l2_ctrl_handler_setup(&radio->hdl); + + return retval; +} + +/************************************************************************** + * USB Interface + **************************************************************************/ + +/* + * si470x_usb_driver_probe - probe for the device + */ +static int si470x_usb_driver_probe(struct usb_interface *intf, + const struct usb_device_id *id) +{ + struct si470x_device *radio; + struct usb_host_interface *iface_desc; + struct usb_endpoint_descriptor *endpoint; + int i, int_end_size, retval = 0; + unsigned char version_warning = 0; + + /* private data allocation and initialization */ + radio = kzalloc(sizeof(struct si470x_device), GFP_KERNEL); + if (!radio) { + retval = -ENOMEM; + goto err_initial; + } + radio->usbdev = interface_to_usbdev(intf); + radio->intf = intf; + radio->band = 1; /* Default to 76 - 108 MHz */ + mutex_init(&radio->lock); + init_completion(&radio->completion); + + iface_desc = intf->cur_altsetting; + + /* Set up interrupt endpoint information. */ + for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { + endpoint = &iface_desc->endpoint[i].desc; + if (((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == + USB_DIR_IN) && ((endpoint->bmAttributes & + USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)) + radio->int_in_endpoint = endpoint; + } + if (!radio->int_in_endpoint) { + dev_info(&intf->dev, "could not find interrupt in endpoint\n"); + retval = -EIO; + goto err_radio; + } + + int_end_size = le16_to_cpu(radio->int_in_endpoint->wMaxPacketSize); + + radio->int_in_buffer = kmalloc(int_end_size, GFP_KERNEL); + if (!radio->int_in_buffer) { + dev_info(&intf->dev, "could not allocate int_in_buffer"); + retval = -ENOMEM; + goto err_radio; + } + + radio->int_in_urb = usb_alloc_urb(0, GFP_KERNEL); + if (!radio->int_in_urb) { + dev_info(&intf->dev, "could not allocate int_in_urb"); + retval = -ENOMEM; + goto err_intbuffer; + } + + radio->v4l2_dev.release = si470x_usb_release; + retval = v4l2_device_register(&intf->dev, &radio->v4l2_dev); + if (retval < 0) { + dev_err(&intf->dev, "couldn't register v4l2_device\n"); + goto err_urb; + } + + v4l2_ctrl_handler_init(&radio->hdl, 2); + v4l2_ctrl_new_std(&radio->hdl, &si470x_ctrl_ops, + V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1); + v4l2_ctrl_new_std(&radio->hdl, &si470x_ctrl_ops, + V4L2_CID_AUDIO_VOLUME, 0, 15, 1, 15); + if (radio->hdl.error) { + retval = radio->hdl.error; + dev_err(&intf->dev, "couldn't register control\n"); + goto err_dev; + } + radio->videodev = si470x_viddev_template; + radio->videodev.ctrl_handler = &radio->hdl; + radio->videodev.lock = &radio->lock; + radio->videodev.v4l2_dev = &radio->v4l2_dev; + radio->videodev.release = video_device_release_empty; + set_bit(V4L2_FL_USE_FH_PRIO, &radio->videodev.flags); + video_set_drvdata(&radio->videodev, radio); + + /* get device and chip versions */ + if (si470x_get_all_registers(radio) < 0) { + retval = -EIO; + goto err_ctrl; + } + dev_info(&intf->dev, "DeviceID=0x%4.4hx ChipID=0x%4.4hx\n", + radio->registers[DEVICEID], radio->registers[CHIPID]); + if ((radio->registers[CHIPID] & CHIPID_FIRMWARE) < RADIO_FW_VERSION) { + dev_warn(&intf->dev, + "This driver is known to work with " + "firmware version %hu,\n", RADIO_FW_VERSION); + dev_warn(&intf->dev, + "but the device has firmware version %hu.\n", + radio->registers[CHIPID] & CHIPID_FIRMWARE); + version_warning = 1; + } + + /* get software and hardware versions */ + if (si470x_get_scratch_page_versions(radio) < 0) { + retval = -EIO; + goto err_ctrl; + } + dev_info(&intf->dev, "software version %d, hardware version %d\n", + radio->software_version, radio->hardware_version); + if (radio->software_version < RADIO_SW_VERSION) { + dev_warn(&intf->dev, + "This driver is known to work with " + "software version %hu,\n", RADIO_SW_VERSION); + dev_warn(&intf->dev, + "but the device has software version %hu.\n", + radio->software_version); + version_warning = 1; + } + if (radio->hardware_version < RADIO_HW_VERSION) { + dev_warn(&intf->dev, + "This driver is known to work with " + "hardware version %hu,\n", RADIO_HW_VERSION); + dev_warn(&intf->dev, + "but the device has hardware version %hu.\n", + radio->hardware_version); + version_warning = 1; + } + + /* give out version warning */ + if (version_warning == 1) { + dev_warn(&intf->dev, + "If you have some trouble using this driver,\n"); + dev_warn(&intf->dev, + "please report to V4L ML at " + "linux-media@vger.kernel.org\n"); + } + + /* set led to connect state */ + si470x_set_led_state(radio, BLINK_GREEN_LED); + + /* rds buffer allocation */ + radio->buf_size = rds_buf * 3; + radio->buffer = kmalloc(radio->buf_size, GFP_KERNEL); + if (!radio->buffer) { + retval = -EIO; + goto err_ctrl; + } + + /* rds buffer configuration */ + radio->wr_index = 0; + radio->rd_index = 0; + init_waitqueue_head(&radio->read_queue); + usb_set_intfdata(intf, radio); + + /* start radio */ + retval = si470x_start_usb(radio); + if (retval < 0) + goto err_all; + + /* set initial frequency */ + si470x_set_freq(radio, 87.5 * FREQ_MUL); /* available in all regions */ + + /* register video device */ + retval = video_register_device(&radio->videodev, VFL_TYPE_RADIO, + radio_nr); + if (retval) { + dev_err(&intf->dev, "Could not register video device\n"); + goto err_all; + } + + return 0; +err_all: + kfree(radio->buffer); +err_ctrl: + v4l2_ctrl_handler_free(&radio->hdl); +err_dev: + v4l2_device_unregister(&radio->v4l2_dev); +err_urb: + usb_free_urb(radio->int_in_urb); +err_intbuffer: + kfree(radio->int_in_buffer); +err_radio: + kfree(radio); +err_initial: + return retval; +} + + +/* + * si470x_usb_driver_suspend - suspend the device + */ +static int si470x_usb_driver_suspend(struct usb_interface *intf, + pm_message_t message) +{ + struct si470x_device *radio = usb_get_intfdata(intf); + + dev_info(&intf->dev, "suspending now...\n"); + + /* shutdown interrupt handler */ + if (radio->int_in_running) { + radio->int_in_running = 0; + if (radio->int_in_urb) + usb_kill_urb(radio->int_in_urb); + } + + /* cancel read processes */ + wake_up_interruptible(&radio->read_queue); + + /* stop radio */ + si470x_stop(radio); + return 0; +} + + +/* + * si470x_usb_driver_resume - resume the device + */ +static int si470x_usb_driver_resume(struct usb_interface *intf) +{ + struct si470x_device *radio = usb_get_intfdata(intf); + int ret; + + dev_info(&intf->dev, "resuming now...\n"); + + /* start radio */ + ret = si470x_start_usb(radio); + if (ret == 0) + v4l2_ctrl_handler_setup(&radio->hdl); + + return ret; +} + + +/* + * si470x_usb_driver_disconnect - disconnect the device + */ +static void si470x_usb_driver_disconnect(struct usb_interface *intf) +{ + struct si470x_device *radio = usb_get_intfdata(intf); + + mutex_lock(&radio->lock); + v4l2_device_disconnect(&radio->v4l2_dev); + video_unregister_device(&radio->videodev); + usb_set_intfdata(intf, NULL); + mutex_unlock(&radio->lock); + v4l2_device_put(&radio->v4l2_dev); +} + + +/* + * si470x_usb_driver - usb driver interface + * + * A note on suspend/resume: this driver had only empty suspend/resume + * functions, and when I tried to test suspend/resume it always disconnected + * instead of resuming (using my ADS InstantFM stick). So I've decided to + * remove these callbacks until someone else with better hardware can + * implement and test this. + */ +static struct usb_driver si470x_usb_driver = { + .name = DRIVER_NAME, + .probe = si470x_usb_driver_probe, + .disconnect = si470x_usb_driver_disconnect, + .suspend = si470x_usb_driver_suspend, + .resume = si470x_usb_driver_resume, + .reset_resume = si470x_usb_driver_resume, + .id_table = si470x_usb_driver_id_table, +}; + +module_usb_driver(si470x_usb_driver); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR(DRIVER_AUTHOR); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_VERSION(DRIVER_VERSION); diff --git a/drivers/media/radio/si470x/radio-si470x.h b/drivers/media/radio/si470x/radio-si470x.h new file mode 100644 index 0000000..ff3c950 --- /dev/null +++ b/drivers/media/radio/si470x/radio-si470x.h @@ -0,0 +1,226 @@ +/* + * drivers/media/radio/si470x/radio-si470x.h + * + * Driver for radios with Silicon Labs Si470x FM Radio Receivers + * + * Copyright (c) 2009 Tobias Lorenz <tobias.lorenz@gmx.net> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + + +/* driver definitions */ +#define DRIVER_NAME "radio-si470x" + + +/* kernel includes */ +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/sched.h> +#include <linux/slab.h> +#include <linux/input.h> +#include <linux/videodev2.h> +#include <linux/mutex.h> +#include <media/v4l2-common.h> +#include <media/v4l2-ioctl.h> +#include <media/v4l2-ctrls.h> +#include <media/v4l2-event.h> +#include <media/v4l2-device.h> +#include <asm/unaligned.h> + + + +/************************************************************************** + * Register Definitions + **************************************************************************/ +#define RADIO_REGISTER_SIZE 2 /* 16 register bit width */ +#define RADIO_REGISTER_NUM 16 /* DEVICEID ... RDSD */ +#define RDS_REGISTER_NUM 6 /* STATUSRSSI ... RDSD */ + +#define DEVICEID 0 /* Device ID */ +#define DEVICEID_PN 0xf000 /* bits 15..12: Part Number */ +#define DEVICEID_MFGID 0x0fff /* bits 11..00: Manufacturer ID */ + +#define CHIPID 1 /* Chip ID */ +#define CHIPID_REV 0xfc00 /* bits 15..10: Chip Version */ +#define CHIPID_DEV 0x0200 /* bits 09..09: Device */ +#define CHIPID_FIRMWARE 0x01ff /* bits 08..00: Firmware Version */ + +#define POWERCFG 2 /* Power Configuration */ +#define POWERCFG_DSMUTE 0x8000 /* bits 15..15: Softmute Disable */ +#define POWERCFG_DMUTE 0x4000 /* bits 14..14: Mute Disable */ +#define POWERCFG_MONO 0x2000 /* bits 13..13: Mono Select */ +#define POWERCFG_RDSM 0x0800 /* bits 11..11: RDS Mode (Si4701 only) */ +#define POWERCFG_SKMODE 0x0400 /* bits 10..10: Seek Mode */ +#define POWERCFG_SEEKUP 0x0200 /* bits 09..09: Seek Direction */ +#define POWERCFG_SEEK 0x0100 /* bits 08..08: Seek */ +#define POWERCFG_DISABLE 0x0040 /* bits 06..06: Powerup Disable */ +#define POWERCFG_ENABLE 0x0001 /* bits 00..00: Powerup Enable */ + +#define CHANNEL 3 /* Channel */ +#define CHANNEL_TUNE 0x8000 /* bits 15..15: Tune */ +#define CHANNEL_CHAN 0x03ff /* bits 09..00: Channel Select */ + +#define SYSCONFIG1 4 /* System Configuration 1 */ +#define SYSCONFIG1_RDSIEN 0x8000 /* bits 15..15: RDS Interrupt Enable (Si4701 only) */ +#define SYSCONFIG1_STCIEN 0x4000 /* bits 14..14: Seek/Tune Complete Interrupt Enable */ +#define SYSCONFIG1_RDS 0x1000 /* bits 12..12: RDS Enable (Si4701 only) */ +#define SYSCONFIG1_DE 0x0800 /* bits 11..11: De-emphasis (0=75us 1=50us) */ +#define SYSCONFIG1_AGCD 0x0400 /* bits 10..10: AGC Disable */ +#define SYSCONFIG1_BLNDADJ 0x00c0 /* bits 07..06: Stereo/Mono Blend Level Adjustment */ +#define SYSCONFIG1_GPIO3 0x0030 /* bits 05..04: General Purpose I/O 3 */ +#define SYSCONFIG1_GPIO2 0x000c /* bits 03..02: General Purpose I/O 2 */ +#define SYSCONFIG1_GPIO1 0x0003 /* bits 01..00: General Purpose I/O 1 */ + +#define SYSCONFIG2 5 /* System Configuration 2 */ +#define SYSCONFIG2_SEEKTH 0xff00 /* bits 15..08: RSSI Seek Threshold */ +#define SYSCONFIG2_BAND 0x00c0 /* bits 07..06: Band Select */ +#define SYSCONFIG2_SPACE 0x0030 /* bits 05..04: Channel Spacing */ +#define SYSCONFIG2_VOLUME 0x000f /* bits 03..00: Volume */ + +#define SYSCONFIG3 6 /* System Configuration 3 */ +#define SYSCONFIG3_SMUTER 0xc000 /* bits 15..14: Softmute Attack/Recover Rate */ +#define SYSCONFIG3_SMUTEA 0x3000 /* bits 13..12: Softmute Attenuation */ +#define SYSCONFIG3_SKSNR 0x00f0 /* bits 07..04: Seek SNR Threshold */ +#define SYSCONFIG3_SKCNT 0x000f /* bits 03..00: Seek FM Impulse Detection Threshold */ + +#define TEST1 7 /* Test 1 */ +#define TEST1_AHIZEN 0x4000 /* bits 14..14: Audio High-Z Enable */ + +#define TEST2 8 /* Test 2 */ +/* TEST2 only contains reserved bits */ + +#define BOOTCONFIG 9 /* Boot Configuration */ +/* BOOTCONFIG only contains reserved bits */ + +#define STATUSRSSI 10 /* Status RSSI */ +#define STATUSRSSI_RDSR 0x8000 /* bits 15..15: RDS Ready (Si4701 only) */ +#define STATUSRSSI_STC 0x4000 /* bits 14..14: Seek/Tune Complete */ +#define STATUSRSSI_SF 0x2000 /* bits 13..13: Seek Fail/Band Limit */ +#define STATUSRSSI_AFCRL 0x1000 /* bits 12..12: AFC Rail */ +#define STATUSRSSI_RDSS 0x0800 /* bits 11..11: RDS Synchronized (Si4701 only) */ +#define STATUSRSSI_BLERA 0x0600 /* bits 10..09: RDS Block A Errors (Si4701 only) */ +#define STATUSRSSI_ST 0x0100 /* bits 08..08: Stereo Indicator */ +#define STATUSRSSI_RSSI 0x00ff /* bits 07..00: RSSI (Received Signal Strength Indicator) */ + +#define READCHAN 11 /* Read Channel */ +#define READCHAN_BLERB 0xc000 /* bits 15..14: RDS Block D Errors (Si4701 only) */ +#define READCHAN_BLERC 0x3000 /* bits 13..12: RDS Block C Errors (Si4701 only) */ +#define READCHAN_BLERD 0x0c00 /* bits 11..10: RDS Block B Errors (Si4701 only) */ +#define READCHAN_READCHAN 0x03ff /* bits 09..00: Read Channel */ + +#define RDSA 12 /* RDSA */ +#define RDSA_RDSA 0xffff /* bits 15..00: RDS Block A Data (Si4701 only) */ + +#define RDSB 13 /* RDSB */ +#define RDSB_RDSB 0xffff /* bits 15..00: RDS Block B Data (Si4701 only) */ + +#define RDSC 14 /* RDSC */ +#define RDSC_RDSC 0xffff /* bits 15..00: RDS Block C Data (Si4701 only) */ + +#define RDSD 15 /* RDSD */ +#define RDSD_RDSD 0xffff /* bits 15..00: RDS Block D Data (Si4701 only) */ + + + +/************************************************************************** + * General Driver Definitions + **************************************************************************/ + +/* + * si470x_device - private data + */ +struct si470x_device { + struct v4l2_device v4l2_dev; + struct video_device videodev; + struct v4l2_ctrl_handler hdl; + int band; + + /* Silabs internal registers (0..15) */ + unsigned short registers[RADIO_REGISTER_NUM]; + + /* RDS receive buffer */ + wait_queue_head_t read_queue; + struct mutex lock; /* buffer locking */ + unsigned char *buffer; /* size is always multiple of three */ + unsigned int buf_size; + unsigned int rd_index; + unsigned int wr_index; + + struct completion completion; + bool status_rssi_auto_update; /* Does RSSI get updated automatic? */ + +#if IS_ENABLED(CPTCFG_USB_SI470X) + /* reference to USB and video device */ + struct usb_device *usbdev; + struct usb_interface *intf; + + /* Interrupt endpoint handling */ + char *int_in_buffer; + struct usb_endpoint_descriptor *int_in_endpoint; + struct urb *int_in_urb; + int int_in_running; + + /* scratch page */ + unsigned char software_version; + unsigned char hardware_version; +#endif + +#if IS_ENABLED(CPTCFG_I2C_SI470X) + struct i2c_client *client; +#endif +}; + + + +/************************************************************************** + * Firmware Versions + **************************************************************************/ + +#define RADIO_FW_VERSION 12 + + + +/************************************************************************** + * Frequency Multiplicator + **************************************************************************/ + +/* + * The frequency is set in units of 62.5 Hz when using V4L2_TUNER_CAP_LOW, + * 62.5 kHz otherwise. + * The tuner is able to have a channel spacing of 50, 100 or 200 kHz. + * tuner->capability is therefore set to V4L2_TUNER_CAP_LOW + * The FREQ_MUL is then: 1 MHz / 62.5 Hz = 16000 + */ +#define FREQ_MUL (1000000 / 62.5) + + + +/************************************************************************** + * Common Functions + **************************************************************************/ +extern struct video_device si470x_viddev_template; +extern const struct v4l2_ctrl_ops si470x_ctrl_ops; +int si470x_get_register(struct si470x_device *radio, int regnr); +int si470x_set_register(struct si470x_device *radio, int regnr); +int si470x_disconnect_check(struct si470x_device *radio); +int si470x_set_freq(struct si470x_device *radio, unsigned int freq); +int si470x_start(struct si470x_device *radio); +int si470x_stop(struct si470x_device *radio); +int si470x_fops_open(struct file *file); +int si470x_fops_release(struct file *file); +int si470x_vidioc_querycap(struct file *file, void *priv, + struct v4l2_capability *capability); diff --git a/drivers/media/radio/si4713-i2c.c b/drivers/media/radio/si4713-i2c.c new file mode 100644 index 0000000..fe16088 --- /dev/null +++ b/drivers/media/radio/si4713-i2c.c @@ -0,0 +1,1532 @@ +/* + * drivers/media/radio/si4713-i2c.c + * + * Silicon Labs Si4713 FM Radio Transmitter I2C commands. + * + * Copyright (c) 2009 Nokia Corporation + * Contact: Eduardo Valentin <eduardo.valentin@nokia.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include <linux/completion.h> +#include <linux/delay.h> +#include <linux/interrupt.h> +#include <linux/i2c.h> +#include <linux/slab.h> +#include <linux/gpio.h> +#include <linux/regulator/consumer.h> +#include <linux/module.h> +#include <media/v4l2-device.h> +#include <media/v4l2-ioctl.h> +#include <media/v4l2-common.h> + +#include "si4713-i2c.h" + +/* module parameters */ +static int debug; +module_param(debug, int, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(debug, "Debug level (0 - 2)"); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Eduardo Valentin <eduardo.valentin@nokia.com>"); +MODULE_DESCRIPTION("I2C driver for Si4713 FM Radio Transmitter"); +MODULE_VERSION("0.0.1"); + +static const char *si4713_supply_names[SI4713_NUM_SUPPLIES] = { + "vio", + "vdd", +}; + +#define DEFAULT_RDS_PI 0x00 +#define DEFAULT_RDS_PTY 0x00 +#define DEFAULT_RDS_DEVIATION 0x00C8 +#define DEFAULT_RDS_PS_REPEAT_COUNT 0x0003 +#define DEFAULT_LIMITER_RTIME 0x1392 +#define DEFAULT_LIMITER_DEV 0x102CA +#define DEFAULT_PILOT_FREQUENCY 0x4A38 +#define DEFAULT_PILOT_DEVIATION 0x1A5E +#define DEFAULT_ACOMP_ATIME 0x0000 +#define DEFAULT_ACOMP_RTIME 0xF4240L +#define DEFAULT_ACOMP_GAIN 0x0F +#define DEFAULT_ACOMP_THRESHOLD (-0x28) +#define DEFAULT_MUTE 0x01 +#define DEFAULT_POWER_LEVEL 88 +#define DEFAULT_FREQUENCY 8800 +#define DEFAULT_PREEMPHASIS FMPE_EU +#define DEFAULT_TUNE_RNL 0xFF + +#define to_si4713_device(sd) container_of(sd, struct si4713_device, sd) + +/* frequency domain transformation (using times 10 to avoid floats) */ +#define FREQDEV_UNIT 100000 +#define FREQV4L2_MULTI 625 +#define si4713_to_v4l2(f) ((f * FREQDEV_UNIT) / FREQV4L2_MULTI) +#define v4l2_to_si4713(f) ((f * FREQV4L2_MULTI) / FREQDEV_UNIT) +#define FREQ_RANGE_LOW 7600 +#define FREQ_RANGE_HIGH 10800 + +#define MAX_ARGS 7 + +#define RDS_BLOCK 8 +#define RDS_BLOCK_CLEAR 0x03 +#define RDS_BLOCK_LOAD 0x04 +#define RDS_RADIOTEXT_2A 0x20 +#define RDS_RADIOTEXT_BLK_SIZE 4 +#define RDS_RADIOTEXT_INDEX_MAX 0x0F +#define RDS_CARRIAGE_RETURN 0x0D + +#define rds_ps_nblocks(len) ((len / RDS_BLOCK) + (len % RDS_BLOCK ? 1 : 0)) + +#define get_status_bit(p, b, m) (((p) & (m)) >> (b)) +#define set_bits(p, v, b, m) (((p) & ~(m)) | ((v) << (b))) + +#define ATTACK_TIME_UNIT 500 + +#define POWER_OFF 0x00 +#define POWER_ON 0x01 + +#define msb(x) ((u8)((u16) x >> 8)) +#define lsb(x) ((u8)((u16) x & 0x00FF)) +#define compose_u16(msb, lsb) (((u16)msb << 8) | lsb) +#define check_command_failed(status) (!(status & SI4713_CTS) || \ + (status & SI4713_ERR)) +/* mute definition */ +#define set_mute(p) ((p & 1) | ((p & 1) << 1)); + +#ifdef DEBUG +#define DBG_BUFFER(device, message, buffer, size) \ + { \ + int i; \ + char str[(size)*5]; \ + for (i = 0; i < size; i++) \ + sprintf(str + i * 5, " 0x%02x", buffer[i]); \ + v4l2_dbg(2, debug, device, "%s:%s\n", message, str); \ + } +#else +#define DBG_BUFFER(device, message, buffer, size) +#endif + +/* + * Values for limiter release time (sorted by second column) + * device release + * value time (us) + */ +static long limiter_times[] = { + 2000, 250, + 1000, 500, + 510, 1000, + 255, 2000, + 170, 3000, + 127, 4020, + 102, 5010, + 85, 6020, + 73, 7010, + 64, 7990, + 57, 8970, + 51, 10030, + 25, 20470, + 17, 30110, + 13, 39380, + 10, 51190, + 8, 63690, + 7, 73140, + 6, 85330, + 5, 102390, +}; + +/* + * Values for audio compression release time (sorted by second column) + * device release + * value time (us) + */ +static unsigned long acomp_rtimes[] = { + 0, 100000, + 1, 200000, + 2, 350000, + 3, 525000, + 4, 1000000, +}; + +/* + * Values for preemphasis (sorted by second column) + * device preemphasis + * value value (v4l2) + */ +static unsigned long preemphasis_values[] = { + FMPE_DISABLED, V4L2_PREEMPHASIS_DISABLED, + FMPE_EU, V4L2_PREEMPHASIS_50_uS, + FMPE_USA, V4L2_PREEMPHASIS_75_uS, +}; + +static int usecs_to_dev(unsigned long usecs, unsigned long const array[], + int size) +{ + int i; + int rval = -EINVAL; + + for (i = 0; i < size / 2; i++) + if (array[(i * 2) + 1] >= usecs) { + rval = array[i * 2]; + break; + } + + return rval; +} + +/* si4713_handler: IRQ handler, just complete work */ +static irqreturn_t si4713_handler(int irq, void *dev) +{ + struct si4713_device *sdev = dev; + + v4l2_dbg(2, debug, &sdev->sd, + "%s: sending signal to completion work.\n", __func__); + complete(&sdev->work); + + return IRQ_HANDLED; +} + +/* + * si4713_send_command - sends a command to si4713 and waits its response + * @sdev: si4713_device structure for the device we are communicating + * @command: command id + * @args: command arguments we are sending (up to 7) + * @argn: actual size of @args + * @response: buffer to place the expected response from the device (up to 15) + * @respn: actual size of @response + * @usecs: amount of time to wait before reading the response (in usecs) + */ +static int si4713_send_command(struct si4713_device *sdev, const u8 command, + const u8 args[], const int argn, + u8 response[], const int respn, const int usecs) +{ + struct i2c_client *client = v4l2_get_subdevdata(&sdev->sd); + u8 data1[MAX_ARGS + 1]; + int err; + + if (!client->adapter) + return -ENODEV; + + /* First send the command and its arguments */ + data1[0] = command; + memcpy(data1 + 1, args, argn); + DBG_BUFFER(&sdev->sd, "Parameters", data1, argn + 1); + + err = i2c_master_send(client, data1, argn + 1); + if (err != argn + 1) { + v4l2_err(&sdev->sd, "Error while sending command 0x%02x\n", + command); + return (err > 0) ? -EIO : err; + } + + /* Wait response from interrupt */ + if (!wait_for_completion_timeout(&sdev->work, + usecs_to_jiffies(usecs) + 1)) + v4l2_warn(&sdev->sd, + "(%s) Device took too much time to answer.\n", + __func__); + + /* Then get the response */ + err = i2c_master_recv(client, response, respn); + if (err != respn) { + v4l2_err(&sdev->sd, + "Error while reading response for command 0x%02x\n", + command); + return (err > 0) ? -EIO : err; + } + + DBG_BUFFER(&sdev->sd, "Response", response, respn); + if (check_command_failed(response[0])) + return -EBUSY; + + return 0; +} + +/* + * si4713_read_property - reads a si4713 property + * @sdev: si4713_device structure for the device we are communicating + * @prop: property identification number + * @pv: property value to be returned on success + */ +static int si4713_read_property(struct si4713_device *sdev, u16 prop, u32 *pv) +{ + int err; + u8 val[SI4713_GET_PROP_NRESP]; + /* + * .First byte = 0 + * .Second byte = property's MSB + * .Third byte = property's LSB + */ + const u8 args[SI4713_GET_PROP_NARGS] = { + 0x00, + msb(prop), + lsb(prop), + }; + + err = si4713_send_command(sdev, SI4713_CMD_GET_PROPERTY, + args, ARRAY_SIZE(args), val, + ARRAY_SIZE(val), DEFAULT_TIMEOUT); + + if (err < 0) + return err; + + *pv = compose_u16(val[2], val[3]); + + v4l2_dbg(1, debug, &sdev->sd, + "%s: property=0x%02x value=0x%02x status=0x%02x\n", + __func__, prop, *pv, val[0]); + + return err; +} + +/* + * si4713_write_property - modifies a si4713 property + * @sdev: si4713_device structure for the device we are communicating + * @prop: property identification number + * @val: new value for that property + */ +static int si4713_write_property(struct si4713_device *sdev, u16 prop, u16 val) +{ + int rval; + u8 resp[SI4713_SET_PROP_NRESP]; + /* + * .First byte = 0 + * .Second byte = property's MSB + * .Third byte = property's LSB + * .Fourth byte = value's MSB + * .Fifth byte = value's LSB + */ + const u8 args[SI4713_SET_PROP_NARGS] = { + 0x00, + msb(prop), + lsb(prop), + msb(val), + lsb(val), + }; + + rval = si4713_send_command(sdev, SI4713_CMD_SET_PROPERTY, + args, ARRAY_SIZE(args), + resp, ARRAY_SIZE(resp), + DEFAULT_TIMEOUT); + + if (rval < 0) + return rval; + + v4l2_dbg(1, debug, &sdev->sd, + "%s: property=0x%02x value=0x%02x status=0x%02x\n", + __func__, prop, val, resp[0]); + + /* + * As there is no command response for SET_PROPERTY, + * wait Tcomp time to finish before proceed, in order + * to have property properly set. + */ + msleep(TIMEOUT_SET_PROPERTY); + + return rval; +} + +/* + * si4713_powerup - Powers the device up + * @sdev: si4713_device structure for the device we are communicating + */ +static int si4713_powerup(struct si4713_device *sdev) +{ + int err; + u8 resp[SI4713_PWUP_NRESP]; + /* + * .First byte = Enabled interrupts and boot function + * .Second byte = Input operation mode + */ + const u8 args[SI4713_PWUP_NARGS] = { + SI4713_PWUP_CTSIEN | SI4713_PWUP_GPO2OEN | SI4713_PWUP_FUNC_TX, + SI4713_PWUP_OPMOD_ANALOG, + }; + + if (sdev->power_state) + return 0; + + err = regulator_bulk_enable(ARRAY_SIZE(sdev->supplies), + sdev->supplies); + if (err) { + v4l2_err(&sdev->sd, "Failed to enable supplies: %d\n", err); + return err; + } + if (gpio_is_valid(sdev->gpio_reset)) { + udelay(50); + gpio_set_value(sdev->gpio_reset, 1); + } + + err = si4713_send_command(sdev, SI4713_CMD_POWER_UP, + args, ARRAY_SIZE(args), + resp, ARRAY_SIZE(resp), + TIMEOUT_POWER_UP); + + if (!err) { + v4l2_dbg(1, debug, &sdev->sd, "Powerup response: 0x%02x\n", + resp[0]); + v4l2_dbg(1, debug, &sdev->sd, "Device in power up mode\n"); + sdev->power_state = POWER_ON; + + err = si4713_write_property(sdev, SI4713_GPO_IEN, + SI4713_STC_INT | SI4713_CTS); + } else { + if (gpio_is_valid(sdev->gpio_reset)) + gpio_set_value(sdev->gpio_reset, 0); + err = regulator_bulk_disable(ARRAY_SIZE(sdev->supplies), + sdev->supplies); + if (err) + v4l2_err(&sdev->sd, + "Failed to disable supplies: %d\n", err); + } + + return err; +} + +/* + * si4713_powerdown - Powers the device down + * @sdev: si4713_device structure for the device we are communicating + */ +static int si4713_powerdown(struct si4713_device *sdev) +{ + int err; + u8 resp[SI4713_PWDN_NRESP]; + + if (!sdev->power_state) + return 0; + + err = si4713_send_command(sdev, SI4713_CMD_POWER_DOWN, + NULL, 0, + resp, ARRAY_SIZE(resp), + DEFAULT_TIMEOUT); + + if (!err) { + v4l2_dbg(1, debug, &sdev->sd, "Power down response: 0x%02x\n", + resp[0]); + v4l2_dbg(1, debug, &sdev->sd, "Device in reset mode\n"); + if (gpio_is_valid(sdev->gpio_reset)) + gpio_set_value(sdev->gpio_reset, 0); + err = regulator_bulk_disable(ARRAY_SIZE(sdev->supplies), + sdev->supplies); + if (err) + v4l2_err(&sdev->sd, + "Failed to disable supplies: %d\n", err); + sdev->power_state = POWER_OFF; + } + + return err; +} + +/* + * si4713_checkrev - Checks if we are treating a device with the correct rev. + * @sdev: si4713_device structure for the device we are communicating + */ +static int si4713_checkrev(struct si4713_device *sdev) +{ + struct i2c_client *client = v4l2_get_subdevdata(&sdev->sd); + int rval; + u8 resp[SI4713_GETREV_NRESP]; + + rval = si4713_send_command(sdev, SI4713_CMD_GET_REV, + NULL, 0, + resp, ARRAY_SIZE(resp), + DEFAULT_TIMEOUT); + + if (rval < 0) + return rval; + + if (resp[1] == SI4713_PRODUCT_NUMBER) { + v4l2_info(&sdev->sd, "chip found @ 0x%02x (%s)\n", + client->addr << 1, client->adapter->name); + } else { + v4l2_err(&sdev->sd, "Invalid product number\n"); + rval = -EINVAL; + } + return rval; +} + +/* + * si4713_wait_stc - Waits STC interrupt and clears status bits. Useful + * for TX_TUNE_POWER, TX_TUNE_FREQ and TX_TUNE_MEAS + * @sdev: si4713_device structure for the device we are communicating + * @usecs: timeout to wait for STC interrupt signal + */ +static int si4713_wait_stc(struct si4713_device *sdev, const int usecs) +{ + int err; + u8 resp[SI4713_GET_STATUS_NRESP]; + + /* Wait response from STC interrupt */ + if (!wait_for_completion_timeout(&sdev->work, + usecs_to_jiffies(usecs) + 1)) + v4l2_warn(&sdev->sd, + "%s: device took too much time to answer (%d usec).\n", + __func__, usecs); + + /* Clear status bits */ + err = si4713_send_command(sdev, SI4713_CMD_GET_INT_STATUS, + NULL, 0, + resp, ARRAY_SIZE(resp), + DEFAULT_TIMEOUT); + + if (err < 0) + goto exit; + + v4l2_dbg(1, debug, &sdev->sd, + "%s: status bits: 0x%02x\n", __func__, resp[0]); + + if (!(resp[0] & SI4713_STC_INT)) + err = -EIO; + +exit: + return err; +} + +/* + * si4713_tx_tune_freq - Sets the state of the RF carrier and sets the tuning + * frequency between 76 and 108 MHz in 10 kHz units and + * steps of 50 kHz. + * @sdev: si4713_device structure for the device we are communicating + * @frequency: desired frequency (76 - 108 MHz, unit 10 KHz, step 50 kHz) + */ +static int si4713_tx_tune_freq(struct si4713_device *sdev, u16 frequency) +{ + int err; + u8 val[SI4713_TXFREQ_NRESP]; + /* + * .First byte = 0 + * .Second byte = frequency's MSB + * .Third byte = frequency's LSB + */ + const u8 args[SI4713_TXFREQ_NARGS] = { + 0x00, + msb(frequency), + lsb(frequency), + }; + + err = si4713_send_command(sdev, SI4713_CMD_TX_TUNE_FREQ, + args, ARRAY_SIZE(args), val, + ARRAY_SIZE(val), DEFAULT_TIMEOUT); + + if (err < 0) + return err; + + v4l2_dbg(1, debug, &sdev->sd, + "%s: frequency=0x%02x status=0x%02x\n", __func__, + frequency, val[0]); + + err = si4713_wait_stc(sdev, TIMEOUT_TX_TUNE); + if (err < 0) + return err; + + return compose_u16(args[1], args[2]); +} + +/* + * si4713_tx_tune_power - Sets the RF voltage level between 88 and 115 dBuV in + * 1 dB units. A value of 0x00 indicates off. The command + * also sets the antenna tuning capacitance. A value of 0 + * indicates autotuning, and a value of 1 - 191 indicates + * a manual override, which results in a tuning + * capacitance of 0.25 pF x @antcap. + * @sdev: si4713_device structure for the device we are communicating + * @power: tuning power (88 - 115 dBuV, unit/step 1 dB) + * @antcap: value of antenna tuning capacitor (0 - 191) + */ +static int si4713_tx_tune_power(struct si4713_device *sdev, u8 power, + u8 antcap) +{ + int err; + u8 val[SI4713_TXPWR_NRESP]; + /* + * .First byte = 0 + * .Second byte = 0 + * .Third byte = power + * .Fourth byte = antcap + */ + const u8 args[SI4713_TXPWR_NARGS] = { + 0x00, + 0x00, + power, + antcap, + }; + + if (((power > 0) && (power < SI4713_MIN_POWER)) || + power > SI4713_MAX_POWER || antcap > SI4713_MAX_ANTCAP) + return -EDOM; + + err = si4713_send_command(sdev, SI4713_CMD_TX_TUNE_POWER, + args, ARRAY_SIZE(args), val, + ARRAY_SIZE(val), DEFAULT_TIMEOUT); + + if (err < 0) + return err; + + v4l2_dbg(1, debug, &sdev->sd, + "%s: power=0x%02x antcap=0x%02x status=0x%02x\n", + __func__, power, antcap, val[0]); + + return si4713_wait_stc(sdev, TIMEOUT_TX_TUNE_POWER); +} + +/* + * si4713_tx_tune_measure - Enters receive mode and measures the received noise + * level in units of dBuV on the selected frequency. + * The Frequency must be between 76 and 108 MHz in 10 kHz + * units and steps of 50 kHz. The command also sets the + * antenna tuning capacitance. A value of 0 means + * autotuning, and a value of 1 to 191 indicates manual + * override. + * @sdev: si4713_device structure for the device we are communicating + * @frequency: desired frequency (76 - 108 MHz, unit 10 KHz, step 50 kHz) + * @antcap: value of antenna tuning capacitor (0 - 191) + */ +static int si4713_tx_tune_measure(struct si4713_device *sdev, u16 frequency, + u8 antcap) +{ + int err; + u8 val[SI4713_TXMEA_NRESP]; + /* + * .First byte = 0 + * .Second byte = frequency's MSB + * .Third byte = frequency's LSB + * .Fourth byte = antcap + */ + const u8 args[SI4713_TXMEA_NARGS] = { + 0x00, + msb(frequency), + lsb(frequency), + antcap, + }; + + sdev->tune_rnl = DEFAULT_TUNE_RNL; + + if (antcap > SI4713_MAX_ANTCAP) + return -EDOM; + + err = si4713_send_command(sdev, SI4713_CMD_TX_TUNE_MEASURE, + args, ARRAY_SIZE(args), val, + ARRAY_SIZE(val), DEFAULT_TIMEOUT); + + if (err < 0) + return err; + + v4l2_dbg(1, debug, &sdev->sd, + "%s: frequency=0x%02x antcap=0x%02x status=0x%02x\n", + __func__, frequency, antcap, val[0]); + + return si4713_wait_stc(sdev, TIMEOUT_TX_TUNE); +} + +/* + * si4713_tx_tune_status- Returns the status of the tx_tune_freq, tx_tune_mea or + * tx_tune_power commands. This command return the current + * frequency, output voltage in dBuV, the antenna tunning + * capacitance value and the received noise level. The + * command also clears the stcint interrupt bit when the + * first bit of its arguments is high. + * @sdev: si4713_device structure for the device we are communicating + * @intack: 0x01 to clear the seek/tune complete interrupt status indicator. + * @frequency: returned frequency + * @power: returned power + * @antcap: returned antenna capacitance + * @noise: returned noise level + */ +static int si4713_tx_tune_status(struct si4713_device *sdev, u8 intack, + u16 *frequency, u8 *power, + u8 *antcap, u8 *noise) +{ + int err; + u8 val[SI4713_TXSTATUS_NRESP]; + /* + * .First byte = intack bit + */ + const u8 args[SI4713_TXSTATUS_NARGS] = { + intack & SI4713_INTACK_MASK, + }; + + err = si4713_send_command(sdev, SI4713_CMD_TX_TUNE_STATUS, + args, ARRAY_SIZE(args), val, + ARRAY_SIZE(val), DEFAULT_TIMEOUT); + + if (!err) { + v4l2_dbg(1, debug, &sdev->sd, + "%s: status=0x%02x\n", __func__, val[0]); + *frequency = compose_u16(val[2], val[3]); + sdev->frequency = *frequency; + *power = val[5]; + *antcap = val[6]; + *noise = val[7]; + v4l2_dbg(1, debug, &sdev->sd, "%s: response: %d x 10 kHz " + "(power %d, antcap %d, rnl %d)\n", __func__, + *frequency, *power, *antcap, *noise); + } + + return err; +} + +/* + * si4713_tx_rds_buff - Loads the RDS group buffer FIFO or circular buffer. + * @sdev: si4713_device structure for the device we are communicating + * @mode: the buffer operation mode. + * @rdsb: RDS Block B + * @rdsc: RDS Block C + * @rdsd: RDS Block D + * @cbleft: returns the number of available circular buffer blocks minus the + * number of used circular buffer blocks. + */ +static int si4713_tx_rds_buff(struct si4713_device *sdev, u8 mode, u16 rdsb, + u16 rdsc, u16 rdsd, s8 *cbleft) +{ + int err; + u8 val[SI4713_RDSBUFF_NRESP]; + + const u8 args[SI4713_RDSBUFF_NARGS] = { + mode & SI4713_RDSBUFF_MODE_MASK, + msb(rdsb), + lsb(rdsb), + msb(rdsc), + lsb(rdsc), + msb(rdsd), + lsb(rdsd), + }; + + err = si4713_send_command(sdev, SI4713_CMD_TX_RDS_BUFF, + args, ARRAY_SIZE(args), val, + ARRAY_SIZE(val), DEFAULT_TIMEOUT); + + if (!err) { + v4l2_dbg(1, debug, &sdev->sd, + "%s: status=0x%02x\n", __func__, val[0]); + *cbleft = (s8)val[2] - val[3]; + v4l2_dbg(1, debug, &sdev->sd, "%s: response: interrupts" + " 0x%02x cb avail: %d cb used %d fifo avail" + " %d fifo used %d\n", __func__, val[1], + val[2], val[3], val[4], val[5]); + } + + return err; +} + +/* + * si4713_tx_rds_ps - Loads the program service buffer. + * @sdev: si4713_device structure for the device we are communicating + * @psid: program service id to be loaded. + * @pschar: assumed 4 size char array to be loaded into the program service + */ +static int si4713_tx_rds_ps(struct si4713_device *sdev, u8 psid, + unsigned char *pschar) +{ + int err; + u8 val[SI4713_RDSPS_NRESP]; + + const u8 args[SI4713_RDSPS_NARGS] = { + psid & SI4713_RDSPS_PSID_MASK, + pschar[0], + pschar[1], + pschar[2], + pschar[3], + }; + + err = si4713_send_command(sdev, SI4713_CMD_TX_RDS_PS, + args, ARRAY_SIZE(args), val, + ARRAY_SIZE(val), DEFAULT_TIMEOUT); + + if (err < 0) + return err; + + v4l2_dbg(1, debug, &sdev->sd, "%s: status=0x%02x\n", __func__, val[0]); + + return err; +} + +static int si4713_set_power_state(struct si4713_device *sdev, u8 value) +{ + if (value) + return si4713_powerup(sdev); + return si4713_powerdown(sdev); +} + +static int si4713_set_mute(struct si4713_device *sdev, u16 mute) +{ + int rval = 0; + + mute = set_mute(mute); + + if (sdev->power_state) + rval = si4713_write_property(sdev, + SI4713_TX_LINE_INPUT_MUTE, mute); + + return rval; +} + +static int si4713_set_rds_ps_name(struct si4713_device *sdev, char *ps_name) +{ + int rval = 0, i; + u8 len = 0; + + /* We want to clear the whole thing */ + if (!strlen(ps_name)) + memset(ps_name, 0, MAX_RDS_PS_NAME + 1); + + if (sdev->power_state) { + /* Write the new ps name and clear the padding */ + for (i = 0; i < MAX_RDS_PS_NAME; i += (RDS_BLOCK / 2)) { + rval = si4713_tx_rds_ps(sdev, (i / (RDS_BLOCK / 2)), + ps_name + i); + if (rval < 0) + return rval; + } + + /* Setup the size to be sent */ + if (strlen(ps_name)) + len = strlen(ps_name) - 1; + else + len = 1; + + rval = si4713_write_property(sdev, + SI4713_TX_RDS_PS_MESSAGE_COUNT, + rds_ps_nblocks(len)); + if (rval < 0) + return rval; + + rval = si4713_write_property(sdev, + SI4713_TX_RDS_PS_REPEAT_COUNT, + DEFAULT_RDS_PS_REPEAT_COUNT * 2); + if (rval < 0) + return rval; + } + + return rval; +} + +static int si4713_set_rds_radio_text(struct si4713_device *sdev, char *rt) +{ + int rval = 0, i; + u16 t_index = 0; + u8 b_index = 0, cr_inserted = 0; + s8 left; + + if (!sdev->power_state) + return rval; + + rval = si4713_tx_rds_buff(sdev, RDS_BLOCK_CLEAR, 0, 0, 0, &left); + if (rval < 0) + return rval; + + if (!strlen(rt)) + return rval; + + do { + /* RDS spec says that if the last block isn't used, + * then apply a carriage return + */ + if (t_index < (RDS_RADIOTEXT_INDEX_MAX * RDS_RADIOTEXT_BLK_SIZE)) { + for (i = 0; i < RDS_RADIOTEXT_BLK_SIZE; i++) { + if (!rt[t_index + i] || + rt[t_index + i] == RDS_CARRIAGE_RETURN) { + rt[t_index + i] = RDS_CARRIAGE_RETURN; + cr_inserted = 1; + break; + } + } + } + + rval = si4713_tx_rds_buff(sdev, RDS_BLOCK_LOAD, + compose_u16(RDS_RADIOTEXT_2A, b_index++), + compose_u16(rt[t_index], rt[t_index + 1]), + compose_u16(rt[t_index + 2], rt[t_index + 3]), + &left); + if (rval < 0) + return rval; + + t_index += RDS_RADIOTEXT_BLK_SIZE; + + if (cr_inserted) + break; + } while (left > 0); + + return rval; +} + +/* + * si4713_update_tune_status - update properties from tx_tune_status + * command. Must be called with sdev->mutex held. + * @sdev: si4713_device structure for the device we are communicating + */ +static int si4713_update_tune_status(struct si4713_device *sdev) +{ + int rval; + u16 f = 0; + u8 p = 0, a = 0, n = 0; + + rval = si4713_tx_tune_status(sdev, 0x00, &f, &p, &a, &n); + + if (rval < 0) + goto exit; + +/* TODO: check that power_level and antenna_capacitor really are not + changed by the hardware. If they are, then these controls should become + volatiles. + sdev->power_level = p; + sdev->antenna_capacitor = a;*/ + sdev->tune_rnl = n; + +exit: + return rval; +} + +static int si4713_choose_econtrol_action(struct si4713_device *sdev, u32 id, + s32 *bit, s32 *mask, u16 *property, int *mul, + unsigned long **table, int *size) +{ + s32 rval = 0; + + switch (id) { + /* FM_TX class controls */ + case V4L2_CID_RDS_TX_PI: + *property = SI4713_TX_RDS_PI; + *mul = 1; + break; + case V4L2_CID_AUDIO_COMPRESSION_THRESHOLD: + *property = SI4713_TX_ACOMP_THRESHOLD; + *mul = 1; + break; + case V4L2_CID_AUDIO_COMPRESSION_GAIN: + *property = SI4713_TX_ACOMP_GAIN; + *mul = 1; + break; + case V4L2_CID_PILOT_TONE_FREQUENCY: + *property = SI4713_TX_PILOT_FREQUENCY; + *mul = 1; + break; + case V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME: + *property = SI4713_TX_ACOMP_ATTACK_TIME; + *mul = ATTACK_TIME_UNIT; + break; + case V4L2_CID_PILOT_TONE_DEVIATION: + *property = SI4713_TX_PILOT_DEVIATION; + *mul = 10; + break; + case V4L2_CID_AUDIO_LIMITER_DEVIATION: + *property = SI4713_TX_AUDIO_DEVIATION; + *mul = 10; + break; + case V4L2_CID_RDS_TX_DEVIATION: + *property = SI4713_TX_RDS_DEVIATION; + *mul = 1; + break; + + case V4L2_CID_RDS_TX_PTY: + *property = SI4713_TX_RDS_PS_MISC; + *bit = 5; + *mask = 0x1F << 5; + break; + case V4L2_CID_AUDIO_LIMITER_ENABLED: + *property = SI4713_TX_ACOMP_ENABLE; + *bit = 1; + *mask = 1 << 1; + break; + case V4L2_CID_AUDIO_COMPRESSION_ENABLED: + *property = SI4713_TX_ACOMP_ENABLE; + *bit = 0; + *mask = 1 << 0; + break; + case V4L2_CID_PILOT_TONE_ENABLED: + *property = SI4713_TX_COMPONENT_ENABLE; + *bit = 0; + *mask = 1 << 0; + break; + + case V4L2_CID_AUDIO_LIMITER_RELEASE_TIME: + *property = SI4713_TX_LIMITER_RELEASE_TIME; + *table = limiter_times; + *size = ARRAY_SIZE(limiter_times); + break; + case V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME: + *property = SI4713_TX_ACOMP_RELEASE_TIME; + *table = acomp_rtimes; + *size = ARRAY_SIZE(acomp_rtimes); + break; + case V4L2_CID_TUNE_PREEMPHASIS: + *property = SI4713_TX_PREEMPHASIS; + *table = preemphasis_values; + *size = ARRAY_SIZE(preemphasis_values); + break; + + default: + rval = -EINVAL; + break; + } + + return rval; +} + +static int si4713_s_frequency(struct v4l2_subdev *sd, const struct v4l2_frequency *f); +static int si4713_s_modulator(struct v4l2_subdev *sd, const struct v4l2_modulator *); +/* + * si4713_setup - Sets the device up with current configuration. + * @sdev: si4713_device structure for the device we are communicating + */ +static int si4713_setup(struct si4713_device *sdev) +{ + struct v4l2_frequency f; + struct v4l2_modulator vm; + int rval; + + /* Device procedure needs to set frequency first */ + f.tuner = 0; + f.frequency = sdev->frequency ? sdev->frequency : DEFAULT_FREQUENCY; + f.frequency = si4713_to_v4l2(f.frequency); + rval = si4713_s_frequency(&sdev->sd, &f); + + vm.index = 0; + if (sdev->stereo) + vm.txsubchans = V4L2_TUNER_SUB_STEREO; + else + vm.txsubchans = V4L2_TUNER_SUB_MONO; + if (sdev->rds_enabled) + vm.txsubchans |= V4L2_TUNER_SUB_RDS; + si4713_s_modulator(&sdev->sd, &vm); + + return rval; +} + +/* + * si4713_initialize - Sets the device up with default configuration. + * @sdev: si4713_device structure for the device we are communicating + */ +static int si4713_initialize(struct si4713_device *sdev) +{ + int rval; + + rval = si4713_set_power_state(sdev, POWER_ON); + if (rval < 0) + return rval; + + rval = si4713_checkrev(sdev); + if (rval < 0) + return rval; + + rval = si4713_set_power_state(sdev, POWER_OFF); + if (rval < 0) + return rval; + + + sdev->frequency = DEFAULT_FREQUENCY; + sdev->stereo = 1; + sdev->tune_rnl = DEFAULT_TUNE_RNL; + return 0; +} + +/* si4713_s_ctrl - set the value of a control */ +static int si4713_s_ctrl(struct v4l2_ctrl *ctrl) +{ + struct si4713_device *sdev = + container_of(ctrl->handler, struct si4713_device, ctrl_handler); + u32 val = 0; + s32 bit = 0, mask = 0; + u16 property = 0; + int mul = 0; + unsigned long *table = NULL; + int size = 0; + bool force = false; + int c; + int ret = 0; + + if (ctrl->id != V4L2_CID_AUDIO_MUTE) + return -EINVAL; + if (ctrl->is_new) { + if (ctrl->val) { + ret = si4713_set_mute(sdev, ctrl->val); + if (!ret) + ret = si4713_set_power_state(sdev, POWER_DOWN); + return ret; + } + ret = si4713_set_power_state(sdev, POWER_UP); + if (!ret) + ret = si4713_set_mute(sdev, ctrl->val); + if (!ret) + ret = si4713_setup(sdev); + if (ret) + return ret; + force = true; + } + + if (!sdev->power_state) + return 0; + + for (c = 1; !ret && c < ctrl->ncontrols; c++) { + ctrl = ctrl->cluster[c]; + + if (!force && !ctrl->is_new) + continue; + + switch (ctrl->id) { + case V4L2_CID_RDS_TX_PS_NAME: + ret = si4713_set_rds_ps_name(sdev, ctrl->string); + break; + + case V4L2_CID_RDS_TX_RADIO_TEXT: + ret = si4713_set_rds_radio_text(sdev, ctrl->string); + break; + + case V4L2_CID_TUNE_ANTENNA_CAPACITOR: + /* don't handle this control if we force setting all + * controls since in that case it will be handled by + * V4L2_CID_TUNE_POWER_LEVEL. */ + if (force) + break; + /* fall through */ + case V4L2_CID_TUNE_POWER_LEVEL: + ret = si4713_tx_tune_power(sdev, + sdev->tune_pwr_level->val, sdev->tune_ant_cap->val); + if (!ret) { + /* Make sure we don't set this twice */ + sdev->tune_ant_cap->is_new = false; + sdev->tune_pwr_level->is_new = false; + } + break; + + default: + ret = si4713_choose_econtrol_action(sdev, ctrl->id, &bit, + &mask, &property, &mul, &table, &size); + if (ret < 0) + break; + + val = ctrl->val; + if (mul) { + val = val / mul; + } else if (table) { + ret = usecs_to_dev(val, table, size); + if (ret < 0) + break; + val = ret; + ret = 0; + } + + if (mask) { + ret = si4713_read_property(sdev, property, &val); + if (ret < 0) + break; + val = set_bits(val, ctrl->val, bit, mask); + } + + ret = si4713_write_property(sdev, property, val); + if (ret < 0) + break; + if (mask) + val = ctrl->val; + break; + } + } + + return ret; +} + +/* si4713_ioctl - deal with private ioctls (only rnl for now) */ +static long si4713_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg) +{ + struct si4713_device *sdev = to_si4713_device(sd); + struct si4713_rnl *rnl = arg; + u16 frequency; + int rval = 0; + + if (!arg) + return -EINVAL; + + switch (cmd) { + case SI4713_IOC_MEASURE_RNL: + frequency = v4l2_to_si4713(rnl->frequency); + + if (sdev->power_state) { + /* Set desired measurement frequency */ + rval = si4713_tx_tune_measure(sdev, frequency, 0); + if (rval < 0) + return rval; + /* get results from tune status */ + rval = si4713_update_tune_status(sdev); + if (rval < 0) + return rval; + } + rnl->rnl = sdev->tune_rnl; + break; + + default: + /* nothing */ + rval = -ENOIOCTLCMD; + } + + return rval; +} + +/* si4713_g_modulator - get modulator attributes */ +static int si4713_g_modulator(struct v4l2_subdev *sd, struct v4l2_modulator *vm) +{ + struct si4713_device *sdev = to_si4713_device(sd); + int rval = 0; + + if (!sdev) + return -ENODEV; + + if (vm->index > 0) + return -EINVAL; + + strncpy(vm->name, "FM Modulator", 32); + vm->capability = V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LOW | + V4L2_TUNER_CAP_RDS | V4L2_TUNER_CAP_RDS_CONTROLS; + + /* Report current frequency range limits */ + vm->rangelow = si4713_to_v4l2(FREQ_RANGE_LOW); + vm->rangehigh = si4713_to_v4l2(FREQ_RANGE_HIGH); + + if (sdev->power_state) { + u32 comp_en = 0; + + rval = si4713_read_property(sdev, SI4713_TX_COMPONENT_ENABLE, + &comp_en); + if (rval < 0) + return rval; + + sdev->stereo = get_status_bit(comp_en, 1, 1 << 1); + } + + /* Report current audio mode: mono or stereo */ + if (sdev->stereo) + vm->txsubchans = V4L2_TUNER_SUB_STEREO; + else + vm->txsubchans = V4L2_TUNER_SUB_MONO; + + /* Report rds feature status */ + if (sdev->rds_enabled) + vm->txsubchans |= V4L2_TUNER_SUB_RDS; + else + vm->txsubchans &= ~V4L2_TUNER_SUB_RDS; + + return rval; +} + +/* si4713_s_modulator - set modulator attributes */ +static int si4713_s_modulator(struct v4l2_subdev *sd, const struct v4l2_modulator *vm) +{ + struct si4713_device *sdev = to_si4713_device(sd); + int rval = 0; + u16 stereo, rds; + u32 p; + + if (!sdev) + return -ENODEV; + + if (vm->index > 0) + return -EINVAL; + + /* Set audio mode: mono or stereo */ + if (vm->txsubchans & V4L2_TUNER_SUB_STEREO) + stereo = 1; + else if (vm->txsubchans & V4L2_TUNER_SUB_MONO) + stereo = 0; + else + return -EINVAL; + + rds = !!(vm->txsubchans & V4L2_TUNER_SUB_RDS); + + if (sdev->power_state) { + rval = si4713_read_property(sdev, + SI4713_TX_COMPONENT_ENABLE, &p); + if (rval < 0) + return rval; + + p = set_bits(p, stereo, 1, 1 << 1); + p = set_bits(p, rds, 2, 1 << 2); + + rval = si4713_write_property(sdev, + SI4713_TX_COMPONENT_ENABLE, p); + if (rval < 0) + return rval; + } + + sdev->stereo = stereo; + sdev->rds_enabled = rds; + + return rval; +} + +/* si4713_g_frequency - get tuner or modulator radio frequency */ +static int si4713_g_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *f) +{ + struct si4713_device *sdev = to_si4713_device(sd); + int rval = 0; + + if (f->tuner) + return -EINVAL; + + if (sdev->power_state) { + u16 freq; + u8 p, a, n; + + rval = si4713_tx_tune_status(sdev, 0x00, &freq, &p, &a, &n); + if (rval < 0) + return rval; + + sdev->frequency = freq; + } + + f->frequency = si4713_to_v4l2(sdev->frequency); + + return rval; +} + +/* si4713_s_frequency - set tuner or modulator radio frequency */ +static int si4713_s_frequency(struct v4l2_subdev *sd, const struct v4l2_frequency *f) +{ + struct si4713_device *sdev = to_si4713_device(sd); + int rval = 0; + u16 frequency = v4l2_to_si4713(f->frequency); + + if (f->tuner) + return -EINVAL; + + /* Check frequency range */ + frequency = clamp_t(u16, frequency, FREQ_RANGE_LOW, FREQ_RANGE_HIGH); + + if (sdev->power_state) { + rval = si4713_tx_tune_freq(sdev, frequency); + if (rval < 0) + return rval; + frequency = rval; + rval = 0; + } + sdev->frequency = frequency; + + return rval; +} + +static const struct v4l2_ctrl_ops si4713_ctrl_ops = { + .s_ctrl = si4713_s_ctrl, +}; + +static const struct v4l2_subdev_core_ops si4713_subdev_core_ops = { + .ioctl = si4713_ioctl, +}; + +static const struct v4l2_subdev_tuner_ops si4713_subdev_tuner_ops = { + .g_frequency = si4713_g_frequency, + .s_frequency = si4713_s_frequency, + .g_modulator = si4713_g_modulator, + .s_modulator = si4713_s_modulator, +}; + +static const struct v4l2_subdev_ops si4713_subdev_ops = { + .core = &si4713_subdev_core_ops, + .tuner = &si4713_subdev_tuner_ops, +}; + +/* + * I2C driver interface + */ +/* si4713_probe - probe for the device */ +static int si4713_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct si4713_device *sdev; + struct si4713_platform_data *pdata = client->dev.platform_data; + struct v4l2_ctrl_handler *hdl; + int rval, i; + + sdev = kzalloc(sizeof *sdev, GFP_KERNEL); + if (!sdev) { + dev_err(&client->dev, "Failed to alloc video device.\n"); + rval = -ENOMEM; + goto exit; + } + + sdev->gpio_reset = -1; + if (pdata && gpio_is_valid(pdata->gpio_reset)) { + rval = gpio_request(pdata->gpio_reset, "si4713 reset"); + if (rval) { + dev_err(&client->dev, + "Failed to request gpio: %d\n", rval); + goto free_sdev; + } + sdev->gpio_reset = pdata->gpio_reset; + gpio_direction_output(sdev->gpio_reset, 0); + } + + for (i = 0; i < ARRAY_SIZE(sdev->supplies); i++) + sdev->supplies[i].supply = si4713_supply_names[i]; + + rval = regulator_bulk_get(&client->dev, ARRAY_SIZE(sdev->supplies), + sdev->supplies); + if (rval) { + dev_err(&client->dev, "Cannot get regulators: %d\n", rval); + goto free_gpio; + } + + v4l2_i2c_subdev_init(&sdev->sd, client, &si4713_subdev_ops); + + init_completion(&sdev->work); + + hdl = &sdev->ctrl_handler; + v4l2_ctrl_handler_init(hdl, 20); + sdev->mute = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops, + V4L2_CID_AUDIO_MUTE, 0, 1, 1, DEFAULT_MUTE); + + sdev->rds_pi = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops, + V4L2_CID_RDS_TX_PI, 0, 0xffff, 1, DEFAULT_RDS_PI); + sdev->rds_pty = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops, + V4L2_CID_RDS_TX_PTY, 0, 31, 1, DEFAULT_RDS_PTY); + sdev->rds_deviation = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops, + V4L2_CID_RDS_TX_DEVIATION, 0, MAX_RDS_DEVIATION, + 10, DEFAULT_RDS_DEVIATION); + /* + * Report step as 8. From RDS spec, psname + * should be 8. But there are receivers which scroll strings + * sized as 8xN. + */ + sdev->rds_ps_name = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops, + V4L2_CID_RDS_TX_PS_NAME, 0, MAX_RDS_PS_NAME, 8, 0); + /* + * Report step as 32 (2A block). From RDS spec, + * radio text should be 32 for 2A block. But there are receivers + * which scroll strings sized as 32xN. Setting default to 32. + */ + sdev->rds_radio_text = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops, + V4L2_CID_RDS_TX_RADIO_TEXT, 0, MAX_RDS_RADIO_TEXT, 32, 0); + + sdev->limiter_enabled = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops, + V4L2_CID_AUDIO_LIMITER_ENABLED, 0, 1, 1, 1); + sdev->limiter_release_time = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops, + V4L2_CID_AUDIO_LIMITER_RELEASE_TIME, 250, + MAX_LIMITER_RELEASE_TIME, 10, DEFAULT_LIMITER_RTIME); + sdev->limiter_deviation = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops, + V4L2_CID_AUDIO_LIMITER_DEVIATION, 0, + MAX_LIMITER_DEVIATION, 10, DEFAULT_LIMITER_DEV); + + sdev->compression_enabled = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops, + V4L2_CID_AUDIO_COMPRESSION_ENABLED, 0, 1, 1, 1); + sdev->compression_gain = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops, + V4L2_CID_AUDIO_COMPRESSION_GAIN, 0, MAX_ACOMP_GAIN, 1, + DEFAULT_ACOMP_GAIN); + sdev->compression_threshold = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops, + V4L2_CID_AUDIO_COMPRESSION_THRESHOLD, MIN_ACOMP_THRESHOLD, + MAX_ACOMP_THRESHOLD, 1, + DEFAULT_ACOMP_THRESHOLD); + sdev->compression_attack_time = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops, + V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME, 0, + MAX_ACOMP_ATTACK_TIME, 500, DEFAULT_ACOMP_ATIME); + sdev->compression_release_time = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops, + V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME, 100000, + MAX_ACOMP_RELEASE_TIME, 100000, DEFAULT_ACOMP_RTIME); + + sdev->pilot_tone_enabled = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops, + V4L2_CID_PILOT_TONE_ENABLED, 0, 1, 1, 1); + sdev->pilot_tone_deviation = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops, + V4L2_CID_PILOT_TONE_DEVIATION, 0, MAX_PILOT_DEVIATION, + 10, DEFAULT_PILOT_DEVIATION); + sdev->pilot_tone_freq = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops, + V4L2_CID_PILOT_TONE_FREQUENCY, 0, MAX_PILOT_FREQUENCY, + 1, DEFAULT_PILOT_FREQUENCY); + + sdev->tune_preemphasis = v4l2_ctrl_new_std_menu(hdl, &si4713_ctrl_ops, + V4L2_CID_TUNE_PREEMPHASIS, + V4L2_PREEMPHASIS_75_uS, 0, V4L2_PREEMPHASIS_50_uS); + sdev->tune_pwr_level = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops, + V4L2_CID_TUNE_POWER_LEVEL, 0, 120, 1, DEFAULT_POWER_LEVEL); + sdev->tune_ant_cap = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops, + V4L2_CID_TUNE_ANTENNA_CAPACITOR, 0, 191, 1, 0); + + if (hdl->error) { + rval = hdl->error; + goto free_ctrls; + } + v4l2_ctrl_cluster(20, &sdev->mute); + sdev->sd.ctrl_handler = hdl; + + if (client->irq) { + rval = request_irq(client->irq, + si4713_handler, IRQF_TRIGGER_FALLING | IRQF_DISABLED, + client->name, sdev); + if (rval < 0) { + v4l2_err(&sdev->sd, "Could not request IRQ\n"); + goto put_reg; + } + v4l2_dbg(1, debug, &sdev->sd, "IRQ requested.\n"); + } else { + v4l2_warn(&sdev->sd, "IRQ not configured. Using timeouts.\n"); + } + + rval = si4713_initialize(sdev); + if (rval < 0) { + v4l2_err(&sdev->sd, "Failed to probe device information.\n"); + goto free_irq; + } + + return 0; + +free_irq: + if (client->irq) + free_irq(client->irq, sdev); +free_ctrls: + v4l2_ctrl_handler_free(hdl); +put_reg: + regulator_bulk_free(ARRAY_SIZE(sdev->supplies), sdev->supplies); +free_gpio: + if (gpio_is_valid(sdev->gpio_reset)) + gpio_free(sdev->gpio_reset); +free_sdev: + kfree(sdev); +exit: + return rval; +} + +/* si4713_remove - remove the device */ +static int si4713_remove(struct i2c_client *client) +{ + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct si4713_device *sdev = to_si4713_device(sd); + + if (sdev->power_state) + si4713_set_power_state(sdev, POWER_DOWN); + + if (client->irq > 0) + free_irq(client->irq, sdev); + + v4l2_device_unregister_subdev(sd); + v4l2_ctrl_handler_free(sd->ctrl_handler); + regulator_bulk_free(ARRAY_SIZE(sdev->supplies), sdev->supplies); + if (gpio_is_valid(sdev->gpio_reset)) + gpio_free(sdev->gpio_reset); + kfree(sdev); + + return 0; +} + +/* si4713_i2c_driver - i2c driver interface */ +static const struct i2c_device_id si4713_id[] = { + { "si4713" , 0 }, + { }, +}; +MODULE_DEVICE_TABLE(i2c, si4713_id); + +static struct i2c_driver si4713_i2c_driver = { + .driver = { + .name = "si4713", + }, + .probe = si4713_probe, + .remove = si4713_remove, + .id_table = si4713_id, +}; + +module_i2c_driver(si4713_i2c_driver); diff --git a/drivers/media/radio/si4713-i2c.h b/drivers/media/radio/si4713-i2c.h new file mode 100644 index 0000000..25cdea2 --- /dev/null +++ b/drivers/media/radio/si4713-i2c.h @@ -0,0 +1,238 @@ +/* + * drivers/media/radio/si4713-i2c.h + * + * Property and commands definitions for Si4713 radio transmitter chip. + * + * Copyright (c) 2008 Instituto Nokia de Tecnologia - INdT + * Contact: Eduardo Valentin <eduardo.valentin@nokia.com> + * + * This file is licensed under the terms of the GNU General Public License + * version 2. This program is licensed "as is" without any warranty of any + * kind, whether express or implied. + * + */ + +#ifndef SI4713_I2C_H +#define SI4713_I2C_H + +#include <media/v4l2-subdev.h> +#include <media/v4l2-ctrls.h> +#include <media/si4713.h> + +#define SI4713_PRODUCT_NUMBER 0x0D + +/* Command Timeouts */ +#define DEFAULT_TIMEOUT 500 +#define TIMEOUT_SET_PROPERTY 20 +#define TIMEOUT_TX_TUNE_POWER 30000 +#define TIMEOUT_TX_TUNE 110000 +#define TIMEOUT_POWER_UP 200000 + +/* + * Command and its arguments definitions + */ +#define SI4713_PWUP_CTSIEN (1<<7) +#define SI4713_PWUP_GPO2OEN (1<<6) +#define SI4713_PWUP_PATCH (1<<5) +#define SI4713_PWUP_XOSCEN (1<<4) +#define SI4713_PWUP_FUNC_TX 0x02 +#define SI4713_PWUP_FUNC_PATCH 0x0F +#define SI4713_PWUP_OPMOD_ANALOG 0x50 +#define SI4713_PWUP_OPMOD_DIGITAL 0x0F +#define SI4713_PWUP_NARGS 2 +#define SI4713_PWUP_NRESP 1 +#define SI4713_CMD_POWER_UP 0x01 + +#define SI4713_GETREV_NRESP 9 +#define SI4713_CMD_GET_REV 0x10 + +#define SI4713_PWDN_NRESP 1 +#define SI4713_CMD_POWER_DOWN 0x11 + +#define SI4713_SET_PROP_NARGS 5 +#define SI4713_SET_PROP_NRESP 1 +#define SI4713_CMD_SET_PROPERTY 0x12 + +#define SI4713_GET_PROP_NARGS 3 +#define SI4713_GET_PROP_NRESP 4 +#define SI4713_CMD_GET_PROPERTY 0x13 + +#define SI4713_GET_STATUS_NRESP 1 +#define SI4713_CMD_GET_INT_STATUS 0x14 + +#define SI4713_CMD_PATCH_ARGS 0x15 +#define SI4713_CMD_PATCH_DATA 0x16 + +#define SI4713_MAX_FREQ 10800 +#define SI4713_MIN_FREQ 7600 +#define SI4713_TXFREQ_NARGS 3 +#define SI4713_TXFREQ_NRESP 1 +#define SI4713_CMD_TX_TUNE_FREQ 0x30 + +#define SI4713_MAX_POWER 120 +#define SI4713_MIN_POWER 88 +#define SI4713_MAX_ANTCAP 191 +#define SI4713_MIN_ANTCAP 0 +#define SI4713_TXPWR_NARGS 4 +#define SI4713_TXPWR_NRESP 1 +#define SI4713_CMD_TX_TUNE_POWER 0x31 + +#define SI4713_TXMEA_NARGS 4 +#define SI4713_TXMEA_NRESP 1 +#define SI4713_CMD_TX_TUNE_MEASURE 0x32 + +#define SI4713_INTACK_MASK 0x01 +#define SI4713_TXSTATUS_NARGS 1 +#define SI4713_TXSTATUS_NRESP 8 +#define SI4713_CMD_TX_TUNE_STATUS 0x33 + +#define SI4713_OVERMOD_BIT (1 << 2) +#define SI4713_IALH_BIT (1 << 1) +#define SI4713_IALL_BIT (1 << 0) +#define SI4713_ASQSTATUS_NARGS 1 +#define SI4713_ASQSTATUS_NRESP 5 +#define SI4713_CMD_TX_ASQ_STATUS 0x34 + +#define SI4713_RDSBUFF_MODE_MASK 0x87 +#define SI4713_RDSBUFF_NARGS 7 +#define SI4713_RDSBUFF_NRESP 6 +#define SI4713_CMD_TX_RDS_BUFF 0x35 + +#define SI4713_RDSPS_PSID_MASK 0x1F +#define SI4713_RDSPS_NARGS 5 +#define SI4713_RDSPS_NRESP 1 +#define SI4713_CMD_TX_RDS_PS 0x36 + +#define SI4713_CMD_GPO_CTL 0x80 +#define SI4713_CMD_GPO_SET 0x81 + +/* + * Bits from status response + */ +#define SI4713_CTS (1<<7) +#define SI4713_ERR (1<<6) +#define SI4713_RDS_INT (1<<2) +#define SI4713_ASQ_INT (1<<1) +#define SI4713_STC_INT (1<<0) + +/* + * Property definitions + */ +#define SI4713_GPO_IEN 0x0001 +#define SI4713_DIG_INPUT_FORMAT 0x0101 +#define SI4713_DIG_INPUT_SAMPLE_RATE 0x0103 +#define SI4713_REFCLK_FREQ 0x0201 +#define SI4713_REFCLK_PRESCALE 0x0202 +#define SI4713_TX_COMPONENT_ENABLE 0x2100 +#define SI4713_TX_AUDIO_DEVIATION 0x2101 +#define SI4713_TX_PILOT_DEVIATION 0x2102 +#define SI4713_TX_RDS_DEVIATION 0x2103 +#define SI4713_TX_LINE_INPUT_LEVEL 0x2104 +#define SI4713_TX_LINE_INPUT_MUTE 0x2105 +#define SI4713_TX_PREEMPHASIS 0x2106 +#define SI4713_TX_PILOT_FREQUENCY 0x2107 +#define SI4713_TX_ACOMP_ENABLE 0x2200 +#define SI4713_TX_ACOMP_THRESHOLD 0x2201 +#define SI4713_TX_ACOMP_ATTACK_TIME 0x2202 +#define SI4713_TX_ACOMP_RELEASE_TIME 0x2203 +#define SI4713_TX_ACOMP_GAIN 0x2204 +#define SI4713_TX_LIMITER_RELEASE_TIME 0x2205 +#define SI4713_TX_ASQ_INTERRUPT_SOURCE 0x2300 +#define SI4713_TX_ASQ_LEVEL_LOW 0x2301 +#define SI4713_TX_ASQ_DURATION_LOW 0x2302 +#define SI4713_TX_ASQ_LEVEL_HIGH 0x2303 +#define SI4713_TX_ASQ_DURATION_HIGH 0x2304 +#define SI4713_TX_RDS_INTERRUPT_SOURCE 0x2C00 +#define SI4713_TX_RDS_PI 0x2C01 +#define SI4713_TX_RDS_PS_MIX 0x2C02 +#define SI4713_TX_RDS_PS_MISC 0x2C03 +#define SI4713_TX_RDS_PS_REPEAT_COUNT 0x2C04 +#define SI4713_TX_RDS_PS_MESSAGE_COUNT 0x2C05 +#define SI4713_TX_RDS_PS_AF 0x2C06 +#define SI4713_TX_RDS_FIFO_SIZE 0x2C07 + +#define PREEMPHASIS_USA 75 +#define PREEMPHASIS_EU 50 +#define PREEMPHASIS_DISABLED 0 +#define FMPE_USA 0x00 +#define FMPE_EU 0x01 +#define FMPE_DISABLED 0x02 + +#define POWER_UP 0x01 +#define POWER_DOWN 0x00 + +#define MAX_RDS_PTY 31 +#define MAX_RDS_DEVIATION 90000 + +/* + * PSNAME is known to be defined as 8 character sized (RDS Spec). + * However, there is receivers which scroll PSNAME 8xN sized. + */ +#define MAX_RDS_PS_NAME 96 + +/* + * MAX_RDS_RADIO_TEXT is known to be defined as 32 (2A group) or 64 (2B group) + * character sized (RDS Spec). + * However, there is receivers which scroll them as well. + */ +#define MAX_RDS_RADIO_TEXT 384 + +#define MAX_LIMITER_RELEASE_TIME 102390 +#define MAX_LIMITER_DEVIATION 90000 + +#define MAX_PILOT_DEVIATION 90000 +#define MAX_PILOT_FREQUENCY 19000 + +#define MAX_ACOMP_RELEASE_TIME 1000000 +#define MAX_ACOMP_ATTACK_TIME 5000 +#define MAX_ACOMP_THRESHOLD 0 +#define MIN_ACOMP_THRESHOLD (-40) +#define MAX_ACOMP_GAIN 20 + +#define SI4713_NUM_SUPPLIES 2 + +/* + * si4713_device - private data + */ +struct si4713_device { + /* v4l2_subdev and i2c reference (v4l2_subdev priv data) */ + struct v4l2_subdev sd; + struct v4l2_ctrl_handler ctrl_handler; + /* private data structures */ + struct { /* si4713 control cluster */ + /* This is one big cluster since the mute control + * powers off the device and after unmuting again all + * controls need to be set at once. The only way of doing + * that is by making it one big cluster. */ + struct v4l2_ctrl *mute; + struct v4l2_ctrl *rds_ps_name; + struct v4l2_ctrl *rds_radio_text; + struct v4l2_ctrl *rds_pi; + struct v4l2_ctrl *rds_deviation; + struct v4l2_ctrl *rds_pty; + struct v4l2_ctrl *compression_enabled; + struct v4l2_ctrl *compression_threshold; + struct v4l2_ctrl *compression_gain; + struct v4l2_ctrl *compression_attack_time; + struct v4l2_ctrl *compression_release_time; + struct v4l2_ctrl *pilot_tone_enabled; + struct v4l2_ctrl *pilot_tone_freq; + struct v4l2_ctrl *pilot_tone_deviation; + struct v4l2_ctrl *limiter_enabled; + struct v4l2_ctrl *limiter_deviation; + struct v4l2_ctrl *limiter_release_time; + struct v4l2_ctrl *tune_preemphasis; + struct v4l2_ctrl *tune_pwr_level; + struct v4l2_ctrl *tune_ant_cap; + }; + struct completion work; + struct regulator_bulk_data supplies[SI4713_NUM_SUPPLIES]; + int gpio_reset; + u32 power_state; + u32 rds_enabled; + u32 frequency; + u32 preemphasis; + u32 stereo; + u32 tune_rnl; +}; +#endif /* ifndef SI4713_I2C_H */ diff --git a/drivers/media/radio/tef6862.c b/drivers/media/radio/tef6862.c new file mode 100644 index 0000000..82c6c94 --- /dev/null +++ b/drivers/media/radio/tef6862.c @@ -0,0 +1,222 @@ +/* + * tef6862.c Philips TEF6862 Car Radio Enhanced Selectivity Tuner + * Copyright (c) 2009 Intel Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include <linux/module.h> +#include <linux/init.h> +#include <linux/errno.h> +#include <linux/kernel.h> +#include <linux/interrupt.h> +#include <linux/i2c.h> +#include <linux/slab.h> +#include <media/v4l2-ioctl.h> +#include <media/v4l2-device.h> +#include <media/v4l2-chip-ident.h> + +#define DRIVER_NAME "tef6862" + +#define FREQ_MUL 16000 + +#define TEF6862_LO_FREQ (875 * FREQ_MUL / 10) +#define TEF6862_HI_FREQ (108 * FREQ_MUL) + +/* Write mode sub addresses */ +#define WM_SUB_BANDWIDTH 0x0 +#define WM_SUB_PLLM 0x1 +#define WM_SUB_PLLL 0x2 +#define WM_SUB_DAA 0x3 +#define WM_SUB_AGC 0x4 +#define WM_SUB_BAND 0x5 +#define WM_SUB_CONTROL 0x6 +#define WM_SUB_LEVEL 0x7 +#define WM_SUB_IFCF 0x8 +#define WM_SUB_IFCAP 0x9 +#define WM_SUB_ACD 0xA +#define WM_SUB_TEST 0xF + +/* Different modes of the MSA register */ +#define MODE_BUFFER 0x0 +#define MODE_PRESET 0x1 +#define MODE_SEARCH 0x2 +#define MODE_AF_UPDATE 0x3 +#define MODE_JUMP 0x4 +#define MODE_CHECK 0x5 +#define MODE_LOAD 0x6 +#define MODE_END 0x7 +#define MODE_SHIFT 5 + +struct tef6862_state { + struct v4l2_subdev sd; + unsigned long freq; +}; + +static inline struct tef6862_state *to_state(struct v4l2_subdev *sd) +{ + return container_of(sd, struct tef6862_state, sd); +} + +static u16 tef6862_sigstr(struct i2c_client *client) +{ + u8 buf[4]; + int err = i2c_master_recv(client, buf, sizeof(buf)); + if (err == sizeof(buf)) + return buf[3] << 8; + return 0; +} + +static int tef6862_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *v) +{ + if (v->index > 0) + return -EINVAL; + + /* only support FM for now */ + strlcpy(v->name, "FM", sizeof(v->name)); + v->type = V4L2_TUNER_RADIO; + v->rangelow = TEF6862_LO_FREQ; + v->rangehigh = TEF6862_HI_FREQ; + v->rxsubchans = V4L2_TUNER_SUB_MONO; + v->capability = V4L2_TUNER_CAP_LOW; + v->audmode = V4L2_TUNER_MODE_STEREO; + v->signal = tef6862_sigstr(v4l2_get_subdevdata(sd)); + + return 0; +} + +static int tef6862_s_tuner(struct v4l2_subdev *sd, const struct v4l2_tuner *v) +{ + return v->index ? -EINVAL : 0; +} + +static int tef6862_s_frequency(struct v4l2_subdev *sd, const struct v4l2_frequency *f) +{ + struct tef6862_state *state = to_state(sd); + struct i2c_client *client = v4l2_get_subdevdata(sd); + u16 pll; + u8 i2cmsg[3]; + int err; + + if (f->tuner != 0) + return -EINVAL; + + pll = 1964 + ((f->frequency - TEF6862_LO_FREQ) * 20) / FREQ_MUL; + i2cmsg[0] = (MODE_PRESET << MODE_SHIFT) | WM_SUB_PLLM; + i2cmsg[1] = (pll >> 8) & 0xff; + i2cmsg[2] = pll & 0xff; + + err = i2c_master_send(client, i2cmsg, sizeof(i2cmsg)); + if (err != sizeof(i2cmsg)) + return err < 0 ? err : -EIO; + + state->freq = f->frequency; + return 0; +} + +static int tef6862_g_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *f) +{ + struct tef6862_state *state = to_state(sd); + + if (f->tuner != 0) + return -EINVAL; + f->type = V4L2_TUNER_RADIO; + f->frequency = state->freq; + return 0; +} + +static int tef6862_g_chip_ident(struct v4l2_subdev *sd, + struct v4l2_dbg_chip_ident *chip) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + + return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_TEF6862, 0); +} + +static const struct v4l2_subdev_tuner_ops tef6862_tuner_ops = { + .g_tuner = tef6862_g_tuner, + .s_tuner = tef6862_s_tuner, + .s_frequency = tef6862_s_frequency, + .g_frequency = tef6862_g_frequency, +}; + +static const struct v4l2_subdev_core_ops tef6862_core_ops = { + .g_chip_ident = tef6862_g_chip_ident, +}; + +static const struct v4l2_subdev_ops tef6862_ops = { + .core = &tef6862_core_ops, + .tuner = &tef6862_tuner_ops, +}; + +/* + * Generic i2c probe + * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1' + */ + +static int tef6862_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct tef6862_state *state; + struct v4l2_subdev *sd; + + /* Check if the adapter supports the needed features */ + if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) + return -EIO; + + v4l_info(client, "chip found @ 0x%02x (%s)\n", + client->addr << 1, client->adapter->name); + + state = kzalloc(sizeof(struct tef6862_state), GFP_KERNEL); + if (state == NULL) + return -ENOMEM; + state->freq = TEF6862_LO_FREQ; + + sd = &state->sd; + v4l2_i2c_subdev_init(sd, client, &tef6862_ops); + + return 0; +} + +static int tef6862_remove(struct i2c_client *client) +{ + struct v4l2_subdev *sd = i2c_get_clientdata(client); + + v4l2_device_unregister_subdev(sd); + kfree(to_state(sd)); + return 0; +} + +static const struct i2c_device_id tef6862_id[] = { + {DRIVER_NAME, 0}, + {}, +}; + +MODULE_DEVICE_TABLE(i2c, tef6862_id); + +static struct i2c_driver tef6862_driver = { + .driver = { + .owner = THIS_MODULE, + .name = DRIVER_NAME, + }, + .probe = tef6862_probe, + .remove = tef6862_remove, + .id_table = tef6862_id, +}; + +module_i2c_driver(tef6862_driver); + +MODULE_DESCRIPTION("TEF6862 Car Radio Enhanced Selectivity Tuner"); +MODULE_AUTHOR("Mocean Laboratories"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/media/radio/wl128x/Kconfig b/drivers/media/radio/wl128x/Kconfig new file mode 100644 index 0000000..2ce3f37 --- /dev/null +++ b/drivers/media/radio/wl128x/Kconfig @@ -0,0 +1,18 @@ +# +# TI's wl128x FM driver based on TI's ST driver. +# +menu "Texas Instruments WL128x FM driver (ST based)" +config RADIO_WL128X + tristate "Texas Instruments WL128x FM Radio" + depends on m + depends on VIDEO_V4L2 && RFKILL && GPIOLIB && TTY + select TI_ST if NET + help + Choose Y here if you have this FM radio chip. + + In order to control your radio card, you will need to use programs + that are compatible with the Video For Linux 2 API. Information on + this API and pointers to "v4l2" programs may be found at + <file:Documentation/video4linux/API.html>. + +endmenu diff --git a/drivers/media/radio/wl128x/Makefile b/drivers/media/radio/wl128x/Makefile new file mode 100644 index 0000000..88ead4a --- /dev/null +++ b/drivers/media/radio/wl128x/Makefile @@ -0,0 +1,6 @@ +# +# Makefile for TI's shared transport driver based wl128x +# FM radio. +# +obj-$(CPTCFG_RADIO_WL128X) += fm_drv.o +fm_drv-objs := fmdrv_common.o fmdrv_rx.o fmdrv_tx.o fmdrv_v4l2.o diff --git a/drivers/media/radio/wl128x/fmdrv.h b/drivers/media/radio/wl128x/fmdrv.h new file mode 100644 index 0000000..aac0f02 --- /dev/null +++ b/drivers/media/radio/wl128x/fmdrv.h @@ -0,0 +1,239 @@ +/* + * FM Driver for Connectivity chip of Texas Instruments. + * + * Common header for all FM driver sub-modules. + * + * Copyright (C) 2011 Texas Instruments + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#ifndef _FM_DRV_H +#define _FM_DRV_H + +#include <linux/skbuff.h> +#include <linux/interrupt.h> +#include <sound/core.h> +#include <sound/initval.h> +#include <linux/timer.h> +#include <media/v4l2-ioctl.h> +#include <media/v4l2-common.h> +#include <media/v4l2-ctrls.h> + +#define FM_DRV_VERSION "0.1.1" +#define FM_DRV_NAME "ti_fmdrv" +#define FM_DRV_CARD_SHORT_NAME "TI FM Radio" +#define FM_DRV_CARD_LONG_NAME "Texas Instruments FM Radio" + +/* Flag info */ +#define FM_INTTASK_RUNNING 0 +#define FM_INTTASK_SCHEDULE_PENDING 1 +#define FM_FW_DW_INPROGRESS 2 +#define FM_CORE_READY 3 +#define FM_CORE_TRANSPORT_READY 4 +#define FM_AF_SWITCH_INPROGRESS 5 +#define FM_CORE_TX_XMITING 6 + +#define FM_TUNE_COMPLETE 0x1 +#define FM_BAND_LIMIT 0x2 + +#define FM_DRV_TX_TIMEOUT (5*HZ) /* 5 seconds */ +#define FM_DRV_RX_SEEK_TIMEOUT (20*HZ) /* 20 seconds */ + +#define fmerr(format, ...) \ + printk(KERN_ERR "fmdrv: " format, ## __VA_ARGS__) +#define fmwarn(format, ...) \ + printk(KERN_WARNING "fmdrv: " format, ##__VA_ARGS__) +#ifdef DEBUG +#define fmdbg(format, ...) \ + printk(KERN_DEBUG "fmdrv: " format, ## __VA_ARGS__) +#else /* DEBUG */ +#define fmdbg(format, ...) do {} while(0) +#endif +enum { + FM_MODE_OFF, + FM_MODE_TX, + FM_MODE_RX, + FM_MODE_ENTRY_MAX +}; + +#define FM_RX_RDS_INFO_FIELD_MAX 8 /* 4 Group * 2 Bytes */ + +/* RX RDS data format */ +struct fm_rdsdata_format { + union { + struct { + u8 buff[FM_RX_RDS_INFO_FIELD_MAX]; + } groupdatabuff; + struct { + u16 pidata; + u8 blk_b[2]; + u8 blk_c[2]; + u8 blk_d[2]; + } groupgeneral; + struct { + u16 pidata; + u8 blk_b[2]; + u8 af[2]; + u8 ps[2]; + } group0A; + struct { + u16 pi[2]; + u8 blk_b[2]; + u8 ps[2]; + } group0B; + } data; +}; + +/* FM region (Europe/US, Japan) info */ +struct region_info { + u32 chanl_space; + u32 bot_freq; + u32 top_freq; + u8 fm_band; +}; +struct fmdev; +typedef void (*int_handler_prototype) (struct fmdev *); + +/* FM Interrupt processing related info */ +struct fm_irq { + u8 stage; + u16 flag; /* FM interrupt flag */ + u16 mask; /* FM interrupt mask */ + /* Interrupt process timeout handler */ + struct timer_list timer; + u8 retry; + int_handler_prototype *handlers; +}; + +/* RDS info */ +struct fm_rds { + u8 flag; /* RX RDS on/off status */ + u8 last_blk_idx; /* Last received RDS block */ + + /* RDS buffer */ + wait_queue_head_t read_queue; + u32 buf_size; /* Size is always multiple of 3 */ + u32 wr_idx; + u32 rd_idx; + u8 *buff; +}; + +#define FM_RDS_MAX_AF_LIST 25 + +/* + * Current RX channel Alternate Frequency cache. + * This info is used to switch to other freq (AF) + * when current channel signal strengh is below RSSI threshold. + */ +struct tuned_station_info { + u16 picode; + u32 af_cache[FM_RDS_MAX_AF_LIST]; + u8 afcache_size; + u8 af_list_max; +}; + +/* FM RX mode info */ +struct fm_rx { + struct region_info region; /* Current selected band */ + u32 freq; /* Current RX frquency */ + u8 mute_mode; /* Current mute mode */ + u8 deemphasis_mode; /* Current deemphasis mode */ + /* RF dependent soft mute mode */ + u8 rf_depend_mute; + u16 volume; /* Current volume level */ + u16 rssi_threshold; /* Current RSSI threshold level */ + /* Holds the index of the current AF jump */ + u8 afjump_idx; + /* Will hold the frequency before the jump */ + u32 freq_before_jump; + u8 rds_mode; /* RDS operation mode (RDS/RDBS) */ + u8 af_mode; /* Alternate frequency on/off */ + struct tuned_station_info stat_info; + struct fm_rds rds; +}; + +#define FMTX_RDS_TXT_STR_SIZE 25 +/* + * FM TX RDS data + * + * @ text_type: is the text following PS or RT + * @ text: radio text string which could either be PS or RT + * @ af_freq: alternate frequency for Tx + * TODO: to be declared in application + */ +struct tx_rds { + u8 text_type; + u8 text[FMTX_RDS_TXT_STR_SIZE]; + u8 flag; + u32 af_freq; +}; +/* + * FM TX global data + * + * @ pwr_lvl: Power Level of the Transmission from mixer control + * @ xmit_state: Transmission state = Updated locally upon Start/Stop + * @ audio_io: i2S/Analog + * @ tx_frq: Transmission frequency + */ +struct fmtx_data { + u8 pwr_lvl; + u8 xmit_state; + u8 audio_io; + u8 region; + u16 aud_mode; + u32 preemph; + u32 tx_frq; + struct tx_rds rds; +}; + +/* FM driver operation structure */ +struct fmdev { + struct video_device *radio_dev; /* V4L2 video device pointer */ + struct snd_card *card; /* Card which holds FM mixer controls */ + u16 asci_id; + spinlock_t rds_buff_lock; /* To protect access to RDS buffer */ + spinlock_t resp_skb_lock; /* To protect access to received SKB */ + + long flag; /* FM driver state machine info */ + u8 streg_cbdata; /* status of ST registration */ + + struct sk_buff_head rx_q; /* RX queue */ + struct tasklet_struct rx_task; /* RX Tasklet */ + + struct sk_buff_head tx_q; /* TX queue */ + struct tasklet_struct tx_task; /* TX Tasklet */ + unsigned long last_tx_jiffies; /* Timestamp of last pkt sent */ + atomic_t tx_cnt; /* Number of packets can send at a time */ + + struct sk_buff *resp_skb; /* Response from the chip */ + /* Main task completion handler */ + struct completion maintask_comp; + /* Opcode of last command sent to the chip */ + u8 pre_op; + /* Handler used for wakeup when response packet is received */ + struct completion *resp_comp; + struct fm_irq irq_info; + u8 curr_fmmode; /* Current FM chip mode (TX, RX, OFF) */ + struct fm_rx rx; /* FM receiver info */ + struct fmtx_data tx_data; + + /* V4L2 ctrl framwork handler*/ + struct v4l2_ctrl_handler ctrl_handler; + + /* For core assisted locking */ + struct mutex mutex; +}; +#endif diff --git a/drivers/media/radio/wl128x/fmdrv_common.c b/drivers/media/radio/wl128x/fmdrv_common.c new file mode 100644 index 0000000..a002234 --- /dev/null +++ b/drivers/media/radio/wl128x/fmdrv_common.c @@ -0,0 +1,1684 @@ +/* + * FM Driver for Connectivity chip of Texas Instruments. + * + * This sub-module of FM driver is common for FM RX and TX + * functionality. This module is responsible for: + * 1) Forming group of Channel-8 commands to perform particular + * functionality (eg., frequency set require more than + * one Channel-8 command to be sent to the chip). + * 2) Sending each Channel-8 command to the chip and reading + * response back over Shared Transport. + * 3) Managing TX and RX Queues and Tasklets. + * 4) Handling FM Interrupt packet and taking appropriate action. + * 5) Loading FM firmware to the chip (common, FM TX, and FM RX + * firmware files based on mode selection) + * + * Copyright (C) 2011 Texas Instruments + * Author: Raja Mani <raja_mani@ti.com> + * Author: Manjunatha Halli <manjunatha_halli@ti.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include <linux/module.h> +#include <linux/firmware.h> +#include <linux/delay.h> +#include "fmdrv.h" +#include "fmdrv_v4l2.h" +#include "fmdrv_common.h" +#include <linux/ti_wilink_st.h> +#include "fmdrv_rx.h" +#include "fmdrv_tx.h" + +/* Region info */ +static struct region_info region_configs[] = { + /* Europe/US */ + { + .chanl_space = FM_CHANNEL_SPACING_200KHZ * FM_FREQ_MUL, + .bot_freq = 87500, /* 87.5 MHz */ + .top_freq = 108000, /* 108 MHz */ + .fm_band = 0, + }, + /* Japan */ + { + .chanl_space = FM_CHANNEL_SPACING_200KHZ * FM_FREQ_MUL, + .bot_freq = 76000, /* 76 MHz */ + .top_freq = 90000, /* 90 MHz */ + .fm_band = 1, + }, +}; + +/* Band selection */ +static u8 default_radio_region; /* Europe/US */ +module_param(default_radio_region, byte, 0); +MODULE_PARM_DESC(default_radio_region, "Region: 0=Europe/US, 1=Japan"); + +/* RDS buffer blocks */ +static u32 default_rds_buf = 300; +module_param(default_rds_buf, uint, 0444); +MODULE_PARM_DESC(rds_buf, "RDS buffer entries"); + +/* Radio Nr */ +static u32 radio_nr = -1; +module_param(radio_nr, int, 0444); +MODULE_PARM_DESC(radio_nr, "Radio Nr"); + +/* FM irq handlers forward declaration */ +static void fm_irq_send_flag_getcmd(struct fmdev *); +static void fm_irq_handle_flag_getcmd_resp(struct fmdev *); +static void fm_irq_handle_hw_malfunction(struct fmdev *); +static void fm_irq_handle_rds_start(struct fmdev *); +static void fm_irq_send_rdsdata_getcmd(struct fmdev *); +static void fm_irq_handle_rdsdata_getcmd_resp(struct fmdev *); +static void fm_irq_handle_rds_finish(struct fmdev *); +static void fm_irq_handle_tune_op_ended(struct fmdev *); +static void fm_irq_handle_power_enb(struct fmdev *); +static void fm_irq_handle_low_rssi_start(struct fmdev *); +static void fm_irq_afjump_set_pi(struct fmdev *); +static void fm_irq_handle_set_pi_resp(struct fmdev *); +static void fm_irq_afjump_set_pimask(struct fmdev *); +static void fm_irq_handle_set_pimask_resp(struct fmdev *); +static void fm_irq_afjump_setfreq(struct fmdev *); +static void fm_irq_handle_setfreq_resp(struct fmdev *); +static void fm_irq_afjump_enableint(struct fmdev *); +static void fm_irq_afjump_enableint_resp(struct fmdev *); +static void fm_irq_start_afjump(struct fmdev *); +static void fm_irq_handle_start_afjump_resp(struct fmdev *); +static void fm_irq_afjump_rd_freq(struct fmdev *); +static void fm_irq_afjump_rd_freq_resp(struct fmdev *); +static void fm_irq_handle_low_rssi_finish(struct fmdev *); +static void fm_irq_send_intmsk_cmd(struct fmdev *); +static void fm_irq_handle_intmsk_cmd_resp(struct fmdev *); + +/* + * When FM common module receives interrupt packet, following handlers + * will be executed one after another to service the interrupt(s) + */ +enum fmc_irq_handler_index { + FM_SEND_FLAG_GETCMD_IDX, + FM_HANDLE_FLAG_GETCMD_RESP_IDX, + + /* HW malfunction irq handler */ + FM_HW_MAL_FUNC_IDX, + + /* RDS threshold reached irq handler */ + FM_RDS_START_IDX, + FM_RDS_SEND_RDS_GETCMD_IDX, + FM_RDS_HANDLE_RDS_GETCMD_RESP_IDX, + FM_RDS_FINISH_IDX, + + /* Tune operation ended irq handler */ + FM_HW_TUNE_OP_ENDED_IDX, + + /* TX power enable irq handler */ + FM_HW_POWER_ENB_IDX, + + /* Low RSSI irq handler */ + FM_LOW_RSSI_START_IDX, + FM_AF_JUMP_SETPI_IDX, + FM_AF_JUMP_HANDLE_SETPI_RESP_IDX, + FM_AF_JUMP_SETPI_MASK_IDX, + FM_AF_JUMP_HANDLE_SETPI_MASK_RESP_IDX, + FM_AF_JUMP_SET_AF_FREQ_IDX, + FM_AF_JUMP_HANDLE_SET_AFFREQ_RESP_IDX, + FM_AF_JUMP_ENABLE_INT_IDX, + FM_AF_JUMP_ENABLE_INT_RESP_IDX, + FM_AF_JUMP_START_AFJUMP_IDX, + FM_AF_JUMP_HANDLE_START_AFJUMP_RESP_IDX, + FM_AF_JUMP_RD_FREQ_IDX, + FM_AF_JUMP_RD_FREQ_RESP_IDX, + FM_LOW_RSSI_FINISH_IDX, + + /* Interrupt process post action */ + FM_SEND_INTMSK_CMD_IDX, + FM_HANDLE_INTMSK_CMD_RESP_IDX, +}; + +/* FM interrupt handler table */ +static int_handler_prototype int_handler_table[] = { + fm_irq_send_flag_getcmd, + fm_irq_handle_flag_getcmd_resp, + fm_irq_handle_hw_malfunction, + fm_irq_handle_rds_start, /* RDS threshold reached irq handler */ + fm_irq_send_rdsdata_getcmd, + fm_irq_handle_rdsdata_getcmd_resp, + fm_irq_handle_rds_finish, + fm_irq_handle_tune_op_ended, + fm_irq_handle_power_enb, /* TX power enable irq handler */ + fm_irq_handle_low_rssi_start, + fm_irq_afjump_set_pi, + fm_irq_handle_set_pi_resp, + fm_irq_afjump_set_pimask, + fm_irq_handle_set_pimask_resp, + fm_irq_afjump_setfreq, + fm_irq_handle_setfreq_resp, + fm_irq_afjump_enableint, + fm_irq_afjump_enableint_resp, + fm_irq_start_afjump, + fm_irq_handle_start_afjump_resp, + fm_irq_afjump_rd_freq, + fm_irq_afjump_rd_freq_resp, + fm_irq_handle_low_rssi_finish, + fm_irq_send_intmsk_cmd, /* Interrupt process post action */ + fm_irq_handle_intmsk_cmd_resp +}; + +long (*g_st_write) (struct sk_buff *skb); +static struct completion wait_for_fmdrv_reg_comp; + +static inline void fm_irq_call(struct fmdev *fmdev) +{ + fmdev->irq_info.handlers[fmdev->irq_info.stage](fmdev); +} + +/* Continue next function in interrupt handler table */ +static inline void fm_irq_call_stage(struct fmdev *fmdev, u8 stage) +{ + fmdev->irq_info.stage = stage; + fm_irq_call(fmdev); +} + +static inline void fm_irq_timeout_stage(struct fmdev *fmdev, u8 stage) +{ + fmdev->irq_info.stage = stage; + mod_timer(&fmdev->irq_info.timer, jiffies + FM_DRV_TX_TIMEOUT); +} + +#ifdef FM_DUMP_TXRX_PKT + /* To dump outgoing FM Channel-8 packets */ +inline void dump_tx_skb_data(struct sk_buff *skb) +{ + int len, len_org; + u8 index; + struct fm_cmd_msg_hdr *cmd_hdr; + + cmd_hdr = (struct fm_cmd_msg_hdr *)skb->data; + printk(KERN_INFO "<<%shdr:%02x len:%02x opcode:%02x type:%s dlen:%02x", + fm_cb(skb)->completion ? " " : "*", cmd_hdr->hdr, + cmd_hdr->len, cmd_hdr->op, + cmd_hdr->rd_wr ? "RD" : "WR", cmd_hdr->dlen); + + len_org = skb->len - FM_CMD_MSG_HDR_SIZE; + if (len_org > 0) { + printk("\n data(%d): ", cmd_hdr->dlen); + len = min(len_org, 14); + for (index = 0; index < len; index++) + printk("%x ", + skb->data[FM_CMD_MSG_HDR_SIZE + index]); + printk("%s", (len_org > 14) ? ".." : ""); + } + printk("\n"); +} + + /* To dump incoming FM Channel-8 packets */ +inline void dump_rx_skb_data(struct sk_buff *skb) +{ + int len, len_org; + u8 index; + struct fm_event_msg_hdr *evt_hdr; + + evt_hdr = (struct fm_event_msg_hdr *)skb->data; + printk(KERN_INFO ">> hdr:%02x len:%02x sts:%02x numhci:%02x " + "opcode:%02x type:%s dlen:%02x", evt_hdr->hdr, evt_hdr->len, + evt_hdr->status, evt_hdr->num_fm_hci_cmds, evt_hdr->op, + (evt_hdr->rd_wr) ? "RD" : "WR", evt_hdr->dlen); + + len_org = skb->len - FM_EVT_MSG_HDR_SIZE; + if (len_org > 0) { + printk("\n data(%d): ", evt_hdr->dlen); + len = min(len_org, 14); + for (index = 0; index < len; index++) + printk("%x ", + skb->data[FM_EVT_MSG_HDR_SIZE + index]); + printk("%s", (len_org > 14) ? ".." : ""); + } + printk("\n"); +} +#endif + +void fmc_update_region_info(struct fmdev *fmdev, u8 region_to_set) +{ + fmdev->rx.region = region_configs[region_to_set]; +} + +/* + * FM common sub-module will schedule this tasklet whenever it receives + * FM packet from ST driver. + */ +static void recv_tasklet(unsigned long arg) +{ + struct fmdev *fmdev; + struct fm_irq *irq_info; + struct fm_event_msg_hdr *evt_hdr; + struct sk_buff *skb; + u8 num_fm_hci_cmds; + unsigned long flags; + + fmdev = (struct fmdev *)arg; + irq_info = &fmdev->irq_info; + /* Process all packets in the RX queue */ + while ((skb = skb_dequeue(&fmdev->rx_q))) { + if (skb->len < sizeof(struct fm_event_msg_hdr)) { + fmerr("skb(%p) has only %d bytes, " + "at least need %zu bytes to decode\n", skb, + skb->len, sizeof(struct fm_event_msg_hdr)); + kfree_skb(skb); + continue; + } + + evt_hdr = (void *)skb->data; + num_fm_hci_cmds = evt_hdr->num_fm_hci_cmds; + + /* FM interrupt packet? */ + if (evt_hdr->op == FM_INTERRUPT) { + /* FM interrupt handler started already? */ + if (!test_bit(FM_INTTASK_RUNNING, &fmdev->flag)) { + set_bit(FM_INTTASK_RUNNING, &fmdev->flag); + if (irq_info->stage != 0) { + fmerr("Inval stage resetting to zero\n"); + irq_info->stage = 0; + } + + /* + * Execute first function in interrupt handler + * table. + */ + irq_info->handlers[irq_info->stage](fmdev); + } else { + set_bit(FM_INTTASK_SCHEDULE_PENDING, &fmdev->flag); + } + kfree_skb(skb); + } + /* Anyone waiting for this with completion handler? */ + else if (evt_hdr->op == fmdev->pre_op && fmdev->resp_comp != NULL) { + + spin_lock_irqsave(&fmdev->resp_skb_lock, flags); + fmdev->resp_skb = skb; + spin_unlock_irqrestore(&fmdev->resp_skb_lock, flags); + complete(fmdev->resp_comp); + + fmdev->resp_comp = NULL; + atomic_set(&fmdev->tx_cnt, 1); + } + /* Is this for interrupt handler? */ + else if (evt_hdr->op == fmdev->pre_op && fmdev->resp_comp == NULL) { + if (fmdev->resp_skb != NULL) + fmerr("Response SKB ptr not NULL\n"); + + spin_lock_irqsave(&fmdev->resp_skb_lock, flags); + fmdev->resp_skb = skb; + spin_unlock_irqrestore(&fmdev->resp_skb_lock, flags); + + /* Execute interrupt handler where state index points */ + irq_info->handlers[irq_info->stage](fmdev); + + kfree_skb(skb); + atomic_set(&fmdev->tx_cnt, 1); + } else { + fmerr("Nobody claimed SKB(%p),purging\n", skb); + } + + /* + * Check flow control field. If Num_FM_HCI_Commands field is + * not zero, schedule FM TX tasklet. + */ + if (num_fm_hci_cmds && atomic_read(&fmdev->tx_cnt)) + if (!skb_queue_empty(&fmdev->tx_q)) + tasklet_schedule(&fmdev->tx_task); + } +} + +/* FM send tasklet: is scheduled when FM packet has to be sent to chip */ +static void send_tasklet(unsigned long arg) +{ + struct fmdev *fmdev; + struct sk_buff *skb; + int len; + + fmdev = (struct fmdev *)arg; + + if (!atomic_read(&fmdev->tx_cnt)) + return; + + /* Check, is there any timeout happened to last transmitted packet */ + if ((jiffies - fmdev->last_tx_jiffies) > FM_DRV_TX_TIMEOUT) { + fmerr("TX timeout occurred\n"); + atomic_set(&fmdev->tx_cnt, 1); + } + + /* Send queued FM TX packets */ + skb = skb_dequeue(&fmdev->tx_q); + if (!skb) + return; + + atomic_dec(&fmdev->tx_cnt); + fmdev->pre_op = fm_cb(skb)->fm_op; + + if (fmdev->resp_comp != NULL) + fmerr("Response completion handler is not NULL\n"); + + fmdev->resp_comp = fm_cb(skb)->completion; + + /* Write FM packet to ST driver */ + len = g_st_write(skb); + if (len < 0) { + kfree_skb(skb); + fmdev->resp_comp = NULL; + fmerr("TX tasklet failed to send skb(%p)\n", skb); + atomic_set(&fmdev->tx_cnt, 1); + } else { + fmdev->last_tx_jiffies = jiffies; + } +} + +/* + * Queues FM Channel-8 packet to FM TX queue and schedules FM TX tasklet for + * transmission + */ +static int fm_send_cmd(struct fmdev *fmdev, u8 fm_op, u16 type, void *payload, + int payload_len, struct completion *wait_completion) +{ + struct sk_buff *skb; + struct fm_cmd_msg_hdr *hdr; + int size; + + if (fm_op >= FM_INTERRUPT) { + fmerr("Invalid fm opcode - %d\n", fm_op); + return -EINVAL; + } + if (test_bit(FM_FW_DW_INPROGRESS, &fmdev->flag) && payload == NULL) { + fmerr("Payload data is NULL during fw download\n"); + return -EINVAL; + } + if (!test_bit(FM_FW_DW_INPROGRESS, &fmdev->flag)) + size = + FM_CMD_MSG_HDR_SIZE + ((payload == NULL) ? 0 : payload_len); + else + size = payload_len; + + skb = alloc_skb(size, GFP_ATOMIC); + if (!skb) { + fmerr("No memory to create new SKB\n"); + return -ENOMEM; + } + /* + * Don't fill FM header info for the commands which come from + * FM firmware file. + */ + if (!test_bit(FM_FW_DW_INPROGRESS, &fmdev->flag) || + test_bit(FM_INTTASK_RUNNING, &fmdev->flag)) { + /* Fill command header info */ + hdr = (struct fm_cmd_msg_hdr *)skb_put(skb, FM_CMD_MSG_HDR_SIZE); + hdr->hdr = FM_PKT_LOGICAL_CHAN_NUMBER; /* 0x08 */ + + /* 3 (fm_opcode,rd_wr,dlen) + payload len) */ + hdr->len = ((payload == NULL) ? 0 : payload_len) + 3; + + /* FM opcode */ + hdr->op = fm_op; + + /* read/write type */ + hdr->rd_wr = type; + hdr->dlen = payload_len; + fm_cb(skb)->fm_op = fm_op; + + /* + * If firmware download has finished and the command is + * not a read command then payload is != NULL - a write + * command with u16 payload - convert to be16 + */ + if (payload != NULL) + *(u16 *)payload = cpu_to_be16(*(u16 *)payload); + + } else if (payload != NULL) { + fm_cb(skb)->fm_op = *((u8 *)payload + 2); + } + if (payload != NULL) + memcpy(skb_put(skb, payload_len), payload, payload_len); + + fm_cb(skb)->completion = wait_completion; + skb_queue_tail(&fmdev->tx_q, skb); + tasklet_schedule(&fmdev->tx_task); + + return 0; +} + +/* Sends FM Channel-8 command to the chip and waits for the response */ +int fmc_send_cmd(struct fmdev *fmdev, u8 fm_op, u16 type, void *payload, + unsigned int payload_len, void *response, int *response_len) +{ + struct sk_buff *skb; + struct fm_event_msg_hdr *evt_hdr; + unsigned long flags; + int ret; + + init_completion(&fmdev->maintask_comp); + ret = fm_send_cmd(fmdev, fm_op, type, payload, payload_len, + &fmdev->maintask_comp); + if (ret) + return ret; + + if (!wait_for_completion_timeout(&fmdev->maintask_comp, + FM_DRV_TX_TIMEOUT)) { + fmerr("Timeout(%d sec),didn't get reg" + "completion signal from RX tasklet\n", + jiffies_to_msecs(FM_DRV_TX_TIMEOUT) / 1000); + return -ETIMEDOUT; + } + if (!fmdev->resp_skb) { + fmerr("Response SKB is missing\n"); + return -EFAULT; + } + spin_lock_irqsave(&fmdev->resp_skb_lock, flags); + skb = fmdev->resp_skb; + fmdev->resp_skb = NULL; + spin_unlock_irqrestore(&fmdev->resp_skb_lock, flags); + + evt_hdr = (void *)skb->data; + if (evt_hdr->status != 0) { + fmerr("Received event pkt status(%d) is not zero\n", + evt_hdr->status); + kfree_skb(skb); + return -EIO; + } + /* Send response data to caller */ + if (response != NULL && response_len != NULL && evt_hdr->dlen) { + /* Skip header info and copy only response data */ + skb_pull(skb, sizeof(struct fm_event_msg_hdr)); + memcpy(response, skb->data, evt_hdr->dlen); + *response_len = evt_hdr->dlen; + } else if (response_len != NULL && evt_hdr->dlen == 0) { + *response_len = 0; + } + kfree_skb(skb); + + return 0; +} + +/* --- Helper functions used in FM interrupt handlers ---*/ +static inline int check_cmdresp_status(struct fmdev *fmdev, + struct sk_buff **skb) +{ + struct fm_event_msg_hdr *fm_evt_hdr; + unsigned long flags; + + del_timer(&fmdev->irq_info.timer); + + spin_lock_irqsave(&fmdev->resp_skb_lock, flags); + *skb = fmdev->resp_skb; + fmdev->resp_skb = NULL; + spin_unlock_irqrestore(&fmdev->resp_skb_lock, flags); + + fm_evt_hdr = (void *)(*skb)->data; + if (fm_evt_hdr->status != 0) { + fmerr("irq: opcode %x response status is not zero " + "Initiating irq recovery process\n", + fm_evt_hdr->op); + + mod_timer(&fmdev->irq_info.timer, jiffies + FM_DRV_TX_TIMEOUT); + return -1; + } + + return 0; +} + +static inline void fm_irq_common_cmd_resp_helper(struct fmdev *fmdev, u8 stage) +{ + struct sk_buff *skb; + + if (!check_cmdresp_status(fmdev, &skb)) + fm_irq_call_stage(fmdev, stage); +} + +/* + * Interrupt process timeout handler. + * One of the irq handler did not get proper response from the chip. So take + * recovery action here. FM interrupts are disabled in the beginning of + * interrupt process. Therefore reset stage index to re-enable default + * interrupts. So that next interrupt will be processed as usual. + */ +static void int_timeout_handler(unsigned long data) +{ + struct fmdev *fmdev; + struct fm_irq *fmirq; + + fmdbg("irq: timeout,trying to re-enable fm interrupts\n"); + fmdev = (struct fmdev *)data; + fmirq = &fmdev->irq_info; + fmirq->retry++; + + if (fmirq->retry > FM_IRQ_TIMEOUT_RETRY_MAX) { + /* Stop recovery action (interrupt reenable process) and + * reset stage index & retry count values */ + fmirq->stage = 0; + fmirq->retry = 0; + fmerr("Recovery action failed during" + "irq processing, max retry reached\n"); + return; + } + fm_irq_call_stage(fmdev, FM_SEND_INTMSK_CMD_IDX); +} + +/* --------- FM interrupt handlers ------------*/ +static void fm_irq_send_flag_getcmd(struct fmdev *fmdev) +{ + u16 flag; + + /* Send FLAG_GET command , to know the source of interrupt */ + if (!fm_send_cmd(fmdev, FLAG_GET, REG_RD, NULL, sizeof(flag), NULL)) + fm_irq_timeout_stage(fmdev, FM_HANDLE_FLAG_GETCMD_RESP_IDX); +} + +static void fm_irq_handle_flag_getcmd_resp(struct fmdev *fmdev) +{ + struct sk_buff *skb; + struct fm_event_msg_hdr *fm_evt_hdr; + + if (check_cmdresp_status(fmdev, &skb)) + return; + + fm_evt_hdr = (void *)skb->data; + + /* Skip header info and copy only response data */ + skb_pull(skb, sizeof(struct fm_event_msg_hdr)); + memcpy(&fmdev->irq_info.flag, skb->data, fm_evt_hdr->dlen); + + fmdev->irq_info.flag = be16_to_cpu(fmdev->irq_info.flag); + fmdbg("irq: flag register(0x%x)\n", fmdev->irq_info.flag); + + /* Continue next function in interrupt handler table */ + fm_irq_call_stage(fmdev, FM_HW_MAL_FUNC_IDX); +} + +static void fm_irq_handle_hw_malfunction(struct fmdev *fmdev) +{ + if (fmdev->irq_info.flag & FM_MAL_EVENT & fmdev->irq_info.mask) + fmerr("irq: HW MAL int received - do nothing\n"); + + /* Continue next function in interrupt handler table */ + fm_irq_call_stage(fmdev, FM_RDS_START_IDX); +} + +static void fm_irq_handle_rds_start(struct fmdev *fmdev) +{ + if (fmdev->irq_info.flag & FM_RDS_EVENT & fmdev->irq_info.mask) { + fmdbg("irq: rds threshold reached\n"); + fmdev->irq_info.stage = FM_RDS_SEND_RDS_GETCMD_IDX; + } else { + /* Continue next function in interrupt handler table */ + fmdev->irq_info.stage = FM_HW_TUNE_OP_ENDED_IDX; + } + + fm_irq_call(fmdev); +} + +static void fm_irq_send_rdsdata_getcmd(struct fmdev *fmdev) +{ + /* Send the command to read RDS data from the chip */ + if (!fm_send_cmd(fmdev, RDS_DATA_GET, REG_RD, NULL, + (FM_RX_RDS_FIFO_THRESHOLD * 3), NULL)) + fm_irq_timeout_stage(fmdev, FM_RDS_HANDLE_RDS_GETCMD_RESP_IDX); +} + +/* Keeps track of current RX channel AF (Alternate Frequency) */ +static void fm_rx_update_af_cache(struct fmdev *fmdev, u8 af) +{ + struct tuned_station_info *stat_info = &fmdev->rx.stat_info; + u8 reg_idx = fmdev->rx.region.fm_band; + u8 index; + u32 freq; + + /* First AF indicates the number of AF follows. Reset the list */ + if ((af >= FM_RDS_1_AF_FOLLOWS) && (af <= FM_RDS_25_AF_FOLLOWS)) { + fmdev->rx.stat_info.af_list_max = (af - FM_RDS_1_AF_FOLLOWS + 1); + fmdev->rx.stat_info.afcache_size = 0; + fmdbg("No of expected AF : %d\n", fmdev->rx.stat_info.af_list_max); + return; + } + + if (af < FM_RDS_MIN_AF) + return; + if (reg_idx == FM_BAND_EUROPE_US && af > FM_RDS_MAX_AF) + return; + if (reg_idx == FM_BAND_JAPAN && af > FM_RDS_MAX_AF_JAPAN) + return; + + freq = fmdev->rx.region.bot_freq + (af * 100); + if (freq == fmdev->rx.freq) { + fmdbg("Current freq(%d) is matching with received AF(%d)\n", + fmdev->rx.freq, freq); + return; + } + /* Do check in AF cache */ + for (index = 0; index < stat_info->afcache_size; index++) { + if (stat_info->af_cache[index] == freq) + break; + } + /* Reached the limit of the list - ignore the next AF */ + if (index == stat_info->af_list_max) { + fmdbg("AF cache is full\n"); + return; + } + /* + * If we reached the end of the list then this AF is not + * in the list - add it. + */ + if (index == stat_info->afcache_size) { + fmdbg("Storing AF %d to cache index %d\n", freq, index); + stat_info->af_cache[index] = freq; + stat_info->afcache_size++; + } +} + +/* + * Converts RDS buffer data from big endian format + * to little endian format. + */ +static void fm_rdsparse_swapbytes(struct fmdev *fmdev, + struct fm_rdsdata_format *rds_format) +{ + u8 byte1; + u8 index = 0; + u8 *rds_buff; + + /* + * Since in Orca the 2 RDS Data bytes are in little endian and + * in Dolphin they are in big endian, the parsing of the RDS data + * is chip dependent + */ + if (fmdev->asci_id != 0x6350) { + rds_buff = &rds_format->data.groupdatabuff.buff[0]; + while (index + 1 < FM_RX_RDS_INFO_FIELD_MAX) { + byte1 = rds_buff[index]; + rds_buff[index] = rds_buff[index + 1]; + rds_buff[index + 1] = byte1; + index += 2; + } + } +} + +static void fm_irq_handle_rdsdata_getcmd_resp(struct fmdev *fmdev) +{ + struct sk_buff *skb; + struct fm_rdsdata_format rds_fmt; + struct fm_rds *rds = &fmdev->rx.rds; + unsigned long group_idx, flags; + u8 *rds_data, meta_data, tmpbuf[3]; + u8 type, blk_idx; + u16 cur_picode; + u32 rds_len; + + if (check_cmdresp_status(fmdev, &skb)) + return; + + /* Skip header info */ + skb_pull(skb, sizeof(struct fm_event_msg_hdr)); + rds_data = skb->data; + rds_len = skb->len; + + /* Parse the RDS data */ + while (rds_len >= FM_RDS_BLK_SIZE) { + meta_data = rds_data[2]; + /* Get the type: 0=A, 1=B, 2=C, 3=C', 4=D, 5=E */ + type = (meta_data & 0x07); + + /* Transform the blk type into index sequence (0, 1, 2, 3, 4) */ + blk_idx = (type <= FM_RDS_BLOCK_C ? type : (type - 1)); + fmdbg("Block index:%d(%s)\n", blk_idx, + (meta_data & FM_RDS_STATUS_ERR_MASK) ? "Bad" : "Ok"); + + if ((meta_data & FM_RDS_STATUS_ERR_MASK) != 0) + break; + + if (blk_idx > FM_RDS_BLK_IDX_D) { + fmdbg("Block sequence mismatch\n"); + rds->last_blk_idx = -1; + break; + } + + /* Skip checkword (control) byte and copy only data byte */ + memcpy(&rds_fmt.data.groupdatabuff. + buff[blk_idx * (FM_RDS_BLK_SIZE - 1)], + rds_data, (FM_RDS_BLK_SIZE - 1)); + + rds->last_blk_idx = blk_idx; + + /* If completed a whole group then handle it */ + if (blk_idx == FM_RDS_BLK_IDX_D) { + fmdbg("Good block received\n"); + fm_rdsparse_swapbytes(fmdev, &rds_fmt); + + /* + * Extract PI code and store in local cache. + * We need this during AF switch processing. + */ + cur_picode = be16_to_cpu(rds_fmt.data.groupgeneral.pidata); + if (fmdev->rx.stat_info.picode != cur_picode) + fmdev->rx.stat_info.picode = cur_picode; + + fmdbg("picode:%d\n", cur_picode); + + group_idx = (rds_fmt.data.groupgeneral.blk_b[0] >> 3); + fmdbg("(fmdrv):Group:%ld%s\n", group_idx/2, + (group_idx % 2) ? "B" : "A"); + + group_idx = 1 << (rds_fmt.data.groupgeneral.blk_b[0] >> 3); + if (group_idx == FM_RDS_GROUP_TYPE_MASK_0A) { + fm_rx_update_af_cache(fmdev, rds_fmt.data.group0A.af[0]); + fm_rx_update_af_cache(fmdev, rds_fmt.data.group0A.af[1]); + } + } + rds_len -= FM_RDS_BLK_SIZE; + rds_data += FM_RDS_BLK_SIZE; + } + + /* Copy raw rds data to internal rds buffer */ + rds_data = skb->data; + rds_len = skb->len; + + spin_lock_irqsave(&fmdev->rds_buff_lock, flags); + while (rds_len > 0) { + /* + * Fill RDS buffer as per V4L2 specification. + * Store control byte + */ + type = (rds_data[2] & 0x07); + blk_idx = (type <= FM_RDS_BLOCK_C ? type : (type - 1)); + tmpbuf[2] = blk_idx; /* Offset name */ + tmpbuf[2] |= blk_idx << 3; /* Received offset */ + + /* Store data byte */ + tmpbuf[0] = rds_data[0]; + tmpbuf[1] = rds_data[1]; + + memcpy(&rds->buff[rds->wr_idx], &tmpbuf, FM_RDS_BLK_SIZE); + rds->wr_idx = (rds->wr_idx + FM_RDS_BLK_SIZE) % rds->buf_size; + + /* Check for overflow & start over */ + if (rds->wr_idx == rds->rd_idx) { + fmdbg("RDS buffer overflow\n"); + rds->wr_idx = 0; + rds->rd_idx = 0; + break; + } + rds_len -= FM_RDS_BLK_SIZE; + rds_data += FM_RDS_BLK_SIZE; + } + spin_unlock_irqrestore(&fmdev->rds_buff_lock, flags); + + /* Wakeup read queue */ + if (rds->wr_idx != rds->rd_idx) + wake_up_interruptible(&rds->read_queue); + + fm_irq_call_stage(fmdev, FM_RDS_FINISH_IDX); +} + +static void fm_irq_handle_rds_finish(struct fmdev *fmdev) +{ + fm_irq_call_stage(fmdev, FM_HW_TUNE_OP_ENDED_IDX); +} + +static void fm_irq_handle_tune_op_ended(struct fmdev *fmdev) +{ + if (fmdev->irq_info.flag & (FM_FR_EVENT | FM_BL_EVENT) & fmdev-> + irq_info.mask) { + fmdbg("irq: tune ended/bandlimit reached\n"); + if (test_and_clear_bit(FM_AF_SWITCH_INPROGRESS, &fmdev->flag)) { + fmdev->irq_info.stage = FM_AF_JUMP_RD_FREQ_IDX; + } else { + complete(&fmdev->maintask_comp); + fmdev->irq_info.stage = FM_HW_POWER_ENB_IDX; + } + } else + fmdev->irq_info.stage = FM_HW_POWER_ENB_IDX; + + fm_irq_call(fmdev); +} + +static void fm_irq_handle_power_enb(struct fmdev *fmdev) +{ + if (fmdev->irq_info.flag & FM_POW_ENB_EVENT) { + fmdbg("irq: Power Enabled/Disabled\n"); + complete(&fmdev->maintask_comp); + } + + fm_irq_call_stage(fmdev, FM_LOW_RSSI_START_IDX); +} + +static void fm_irq_handle_low_rssi_start(struct fmdev *fmdev) +{ + if ((fmdev->rx.af_mode == FM_RX_RDS_AF_SWITCH_MODE_ON) && + (fmdev->irq_info.flag & FM_LEV_EVENT & fmdev->irq_info.mask) && + (fmdev->rx.freq != FM_UNDEFINED_FREQ) && + (fmdev->rx.stat_info.afcache_size != 0)) { + fmdbg("irq: rssi level has fallen below threshold level\n"); + + /* Disable further low RSSI interrupts */ + fmdev->irq_info.mask &= ~FM_LEV_EVENT; + + fmdev->rx.afjump_idx = 0; + fmdev->rx.freq_before_jump = fmdev->rx.freq; + fmdev->irq_info.stage = FM_AF_JUMP_SETPI_IDX; + } else { + /* Continue next function in interrupt handler table */ + fmdev->irq_info.stage = FM_SEND_INTMSK_CMD_IDX; + } + + fm_irq_call(fmdev); +} + +static void fm_irq_afjump_set_pi(struct fmdev *fmdev) +{ + u16 payload; + + /* Set PI code - must be updated if the AF list is not empty */ + payload = fmdev->rx.stat_info.picode; + if (!fm_send_cmd(fmdev, RDS_PI_SET, REG_WR, &payload, sizeof(payload), NULL)) + fm_irq_timeout_stage(fmdev, FM_AF_JUMP_HANDLE_SETPI_RESP_IDX); +} + +static void fm_irq_handle_set_pi_resp(struct fmdev *fmdev) +{ + fm_irq_common_cmd_resp_helper(fmdev, FM_AF_JUMP_SETPI_MASK_IDX); +} + +/* + * Set PI mask. + * 0xFFFF = Enable PI code matching + * 0x0000 = Disable PI code matching + */ +static void fm_irq_afjump_set_pimask(struct fmdev *fmdev) +{ + u16 payload; + + payload = 0x0000; + if (!fm_send_cmd(fmdev, RDS_PI_MASK_SET, REG_WR, &payload, sizeof(payload), NULL)) + fm_irq_timeout_stage(fmdev, FM_AF_JUMP_HANDLE_SETPI_MASK_RESP_IDX); +} + +static void fm_irq_handle_set_pimask_resp(struct fmdev *fmdev) +{ + fm_irq_common_cmd_resp_helper(fmdev, FM_AF_JUMP_SET_AF_FREQ_IDX); +} + +static void fm_irq_afjump_setfreq(struct fmdev *fmdev) +{ + u16 frq_index; + u16 payload; + + fmdbg("Swtich to %d KHz\n", fmdev->rx.stat_info.af_cache[fmdev->rx.afjump_idx]); + frq_index = (fmdev->rx.stat_info.af_cache[fmdev->rx.afjump_idx] - + fmdev->rx.region.bot_freq) / FM_FREQ_MUL; + + payload = frq_index; + if (!fm_send_cmd(fmdev, AF_FREQ_SET, REG_WR, &payload, sizeof(payload), NULL)) + fm_irq_timeout_stage(fmdev, FM_AF_JUMP_HANDLE_SET_AFFREQ_RESP_IDX); +} + +static void fm_irq_handle_setfreq_resp(struct fmdev *fmdev) +{ + fm_irq_common_cmd_resp_helper(fmdev, FM_AF_JUMP_ENABLE_INT_IDX); +} + +static void fm_irq_afjump_enableint(struct fmdev *fmdev) +{ + u16 payload; + + /* Enable FR (tuning operation ended) interrupt */ + payload = FM_FR_EVENT; + if (!fm_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload, sizeof(payload), NULL)) + fm_irq_timeout_stage(fmdev, FM_AF_JUMP_ENABLE_INT_RESP_IDX); +} + +static void fm_irq_afjump_enableint_resp(struct fmdev *fmdev) +{ + fm_irq_common_cmd_resp_helper(fmdev, FM_AF_JUMP_START_AFJUMP_IDX); +} + +static void fm_irq_start_afjump(struct fmdev *fmdev) +{ + u16 payload; + + payload = FM_TUNER_AF_JUMP_MODE; + if (!fm_send_cmd(fmdev, TUNER_MODE_SET, REG_WR, &payload, + sizeof(payload), NULL)) + fm_irq_timeout_stage(fmdev, FM_AF_JUMP_HANDLE_START_AFJUMP_RESP_IDX); +} + +static void fm_irq_handle_start_afjump_resp(struct fmdev *fmdev) +{ + struct sk_buff *skb; + + if (check_cmdresp_status(fmdev, &skb)) + return; + + fmdev->irq_info.stage = FM_SEND_FLAG_GETCMD_IDX; + set_bit(FM_AF_SWITCH_INPROGRESS, &fmdev->flag); + clear_bit(FM_INTTASK_RUNNING, &fmdev->flag); +} + +static void fm_irq_afjump_rd_freq(struct fmdev *fmdev) +{ + u16 payload; + + if (!fm_send_cmd(fmdev, FREQ_SET, REG_RD, NULL, sizeof(payload), NULL)) + fm_irq_timeout_stage(fmdev, FM_AF_JUMP_RD_FREQ_RESP_IDX); +} + +static void fm_irq_afjump_rd_freq_resp(struct fmdev *fmdev) +{ + struct sk_buff *skb; + u16 read_freq; + u32 curr_freq, jumped_freq; + + if (check_cmdresp_status(fmdev, &skb)) + return; + + /* Skip header info and copy only response data */ + skb_pull(skb, sizeof(struct fm_event_msg_hdr)); + memcpy(&read_freq, skb->data, sizeof(read_freq)); + read_freq = be16_to_cpu(read_freq); + curr_freq = fmdev->rx.region.bot_freq + ((u32)read_freq * FM_FREQ_MUL); + + jumped_freq = fmdev->rx.stat_info.af_cache[fmdev->rx.afjump_idx]; + + /* If the frequency was changed the jump succeeded */ + if ((curr_freq != fmdev->rx.freq_before_jump) && (curr_freq == jumped_freq)) { + fmdbg("Successfully switched to alternate freq %d\n", curr_freq); + fmdev->rx.freq = curr_freq; + fm_rx_reset_rds_cache(fmdev); + + /* AF feature is on, enable low level RSSI interrupt */ + if (fmdev->rx.af_mode == FM_RX_RDS_AF_SWITCH_MODE_ON) + fmdev->irq_info.mask |= FM_LEV_EVENT; + + fmdev->irq_info.stage = FM_LOW_RSSI_FINISH_IDX; + } else { /* jump to the next freq in the AF list */ + fmdev->rx.afjump_idx++; + + /* If we reached the end of the list - stop searching */ + if (fmdev->rx.afjump_idx >= fmdev->rx.stat_info.afcache_size) { + fmdbg("AF switch processing failed\n"); + fmdev->irq_info.stage = FM_LOW_RSSI_FINISH_IDX; + } else { /* AF List is not over - try next one */ + + fmdbg("Trying next freq in AF cache\n"); + fmdev->irq_info.stage = FM_AF_JUMP_SETPI_IDX; + } + } + fm_irq_call(fmdev); +} + +static void fm_irq_handle_low_rssi_finish(struct fmdev *fmdev) +{ + fm_irq_call_stage(fmdev, FM_SEND_INTMSK_CMD_IDX); +} + +static void fm_irq_send_intmsk_cmd(struct fmdev *fmdev) +{ + u16 payload; + + /* Re-enable FM interrupts */ + payload = fmdev->irq_info.mask; + + if (!fm_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload, + sizeof(payload), NULL)) + fm_irq_timeout_stage(fmdev, FM_HANDLE_INTMSK_CMD_RESP_IDX); +} + +static void fm_irq_handle_intmsk_cmd_resp(struct fmdev *fmdev) +{ + struct sk_buff *skb; + + if (check_cmdresp_status(fmdev, &skb)) + return; + /* + * This is last function in interrupt table to be executed. + * So, reset stage index to 0. + */ + fmdev->irq_info.stage = FM_SEND_FLAG_GETCMD_IDX; + + /* Start processing any pending interrupt */ + if (test_and_clear_bit(FM_INTTASK_SCHEDULE_PENDING, &fmdev->flag)) + fmdev->irq_info.handlers[fmdev->irq_info.stage](fmdev); + else + clear_bit(FM_INTTASK_RUNNING, &fmdev->flag); +} + +/* Returns availability of RDS data in internel buffer */ +int fmc_is_rds_data_available(struct fmdev *fmdev, struct file *file, + struct poll_table_struct *pts) +{ + poll_wait(file, &fmdev->rx.rds.read_queue, pts); + if (fmdev->rx.rds.rd_idx != fmdev->rx.rds.wr_idx) + return 0; + + return -EAGAIN; +} + +/* Copies RDS data from internal buffer to user buffer */ +int fmc_transfer_rds_from_internal_buff(struct fmdev *fmdev, struct file *file, + u8 __user *buf, size_t count) +{ + u32 block_count; + unsigned long flags; + int ret; + + if (fmdev->rx.rds.wr_idx == fmdev->rx.rds.rd_idx) { + if (file->f_flags & O_NONBLOCK) + return -EWOULDBLOCK; + + ret = wait_event_interruptible(fmdev->rx.rds.read_queue, + (fmdev->rx.rds.wr_idx != fmdev->rx.rds.rd_idx)); + if (ret) + return -EINTR; + } + + /* Calculate block count from byte count */ + count /= 3; + block_count = 0; + ret = 0; + + spin_lock_irqsave(&fmdev->rds_buff_lock, flags); + + while (block_count < count) { + if (fmdev->rx.rds.wr_idx == fmdev->rx.rds.rd_idx) + break; + + if (copy_to_user(buf, &fmdev->rx.rds.buff[fmdev->rx.rds.rd_idx], + FM_RDS_BLK_SIZE)) + break; + + fmdev->rx.rds.rd_idx += FM_RDS_BLK_SIZE; + if (fmdev->rx.rds.rd_idx >= fmdev->rx.rds.buf_size) + fmdev->rx.rds.rd_idx = 0; + + block_count++; + buf += FM_RDS_BLK_SIZE; + ret += FM_RDS_BLK_SIZE; + } + spin_unlock_irqrestore(&fmdev->rds_buff_lock, flags); + return ret; +} + +int fmc_set_freq(struct fmdev *fmdev, u32 freq_to_set) +{ + switch (fmdev->curr_fmmode) { + case FM_MODE_RX: + return fm_rx_set_freq(fmdev, freq_to_set); + + case FM_MODE_TX: + return fm_tx_set_freq(fmdev, freq_to_set); + + default: + return -EINVAL; + } +} + +int fmc_get_freq(struct fmdev *fmdev, u32 *cur_tuned_frq) +{ + if (fmdev->rx.freq == FM_UNDEFINED_FREQ) { + fmerr("RX frequency is not set\n"); + return -EPERM; + } + if (cur_tuned_frq == NULL) { + fmerr("Invalid memory\n"); + return -ENOMEM; + } + + switch (fmdev->curr_fmmode) { + case FM_MODE_RX: + *cur_tuned_frq = fmdev->rx.freq; + return 0; + + case FM_MODE_TX: + *cur_tuned_frq = 0; /* TODO : Change this later */ + return 0; + + default: + return -EINVAL; + } + +} + +int fmc_set_region(struct fmdev *fmdev, u8 region_to_set) +{ + switch (fmdev->curr_fmmode) { + case FM_MODE_RX: + return fm_rx_set_region(fmdev, region_to_set); + + case FM_MODE_TX: + return fm_tx_set_region(fmdev, region_to_set); + + default: + return -EINVAL; + } +} + +int fmc_set_mute_mode(struct fmdev *fmdev, u8 mute_mode_toset) +{ + switch (fmdev->curr_fmmode) { + case FM_MODE_RX: + return fm_rx_set_mute_mode(fmdev, mute_mode_toset); + + case FM_MODE_TX: + return fm_tx_set_mute_mode(fmdev, mute_mode_toset); + + default: + return -EINVAL; + } +} + +int fmc_set_stereo_mono(struct fmdev *fmdev, u16 mode) +{ + switch (fmdev->curr_fmmode) { + case FM_MODE_RX: + return fm_rx_set_stereo_mono(fmdev, mode); + + case FM_MODE_TX: + return fm_tx_set_stereo_mono(fmdev, mode); + + default: + return -EINVAL; + } +} + +int fmc_set_rds_mode(struct fmdev *fmdev, u8 rds_en_dis) +{ + switch (fmdev->curr_fmmode) { + case FM_MODE_RX: + return fm_rx_set_rds_mode(fmdev, rds_en_dis); + + case FM_MODE_TX: + return fm_tx_set_rds_mode(fmdev, rds_en_dis); + + default: + return -EINVAL; + } +} + +/* Sends power off command to the chip */ +static int fm_power_down(struct fmdev *fmdev) +{ + u16 payload; + int ret; + + if (!test_bit(FM_CORE_READY, &fmdev->flag)) { + fmerr("FM core is not ready\n"); + return -EPERM; + } + if (fmdev->curr_fmmode == FM_MODE_OFF) { + fmdbg("FM chip is already in OFF state\n"); + return 0; + } + + payload = 0x0; + ret = fmc_send_cmd(fmdev, FM_POWER_MODE, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + return fmc_release(fmdev); +} + +/* Reads init command from FM firmware file and loads to the chip */ +static int fm_download_firmware(struct fmdev *fmdev, const u8 *fw_name) +{ + const struct firmware *fw_entry; + struct bts_header *fw_header; + struct bts_action *action; + struct bts_action_delay *delay; + u8 *fw_data; + int ret, fw_len, cmd_cnt; + + cmd_cnt = 0; + set_bit(FM_FW_DW_INPROGRESS, &fmdev->flag); + + ret = request_firmware(&fw_entry, fw_name, + &fmdev->radio_dev->dev); + if (ret < 0) { + fmerr("Unable to read firmware(%s) content\n", fw_name); + return ret; + } + fmdbg("Firmware(%s) length : %d bytes\n", fw_name, fw_entry->size); + + fw_data = (void *)fw_entry->data; + fw_len = fw_entry->size; + + fw_header = (struct bts_header *)fw_data; + if (fw_header->magic != FM_FW_FILE_HEADER_MAGIC) { + fmerr("%s not a legal TI firmware file\n", fw_name); + ret = -EINVAL; + goto rel_fw; + } + fmdbg("FW(%s) magic number : 0x%x\n", fw_name, fw_header->magic); + + /* Skip file header info , we already verified it */ + fw_data += sizeof(struct bts_header); + fw_len -= sizeof(struct bts_header); + + while (fw_data && fw_len > 0) { + action = (struct bts_action *)fw_data; + + switch (action->type) { + case ACTION_SEND_COMMAND: /* Send */ + if (fmc_send_cmd(fmdev, 0, 0, action->data, + action->size, NULL, NULL)) + goto rel_fw; + + cmd_cnt++; + break; + + case ACTION_DELAY: /* Delay */ + delay = (struct bts_action_delay *)action->data; + mdelay(delay->msec); + break; + } + + fw_data += (sizeof(struct bts_action) + (action->size)); + fw_len -= (sizeof(struct bts_action) + (action->size)); + } + fmdbg("Firmware commands(%d) loaded to chip\n", cmd_cnt); +rel_fw: + release_firmware(fw_entry); + clear_bit(FM_FW_DW_INPROGRESS, &fmdev->flag); + + return ret; +} + +/* Loads default RX configuration to the chip */ +static int load_default_rx_configuration(struct fmdev *fmdev) +{ + int ret; + + ret = fm_rx_set_volume(fmdev, FM_DEFAULT_RX_VOLUME); + if (ret < 0) + return ret; + + return fm_rx_set_rssi_threshold(fmdev, FM_DEFAULT_RSSI_THRESHOLD); +} + +/* Does FM power on sequence */ +static int fm_power_up(struct fmdev *fmdev, u8 mode) +{ + u16 payload, asic_id, asic_ver; + int resp_len, ret; + u8 fw_name[50]; + + if (mode >= FM_MODE_ENTRY_MAX) { + fmerr("Invalid firmware download option\n"); + return -EINVAL; + } + + /* + * Initialize FM common module. FM GPIO toggling is + * taken care in Shared Transport driver. + */ + ret = fmc_prepare(fmdev); + if (ret < 0) { + fmerr("Unable to prepare FM Common\n"); + return ret; + } + + payload = FM_ENABLE; + if (fmc_send_cmd(fmdev, FM_POWER_MODE, REG_WR, &payload, + sizeof(payload), NULL, NULL)) + goto rel; + + /* Allow the chip to settle down in Channel-8 mode */ + msleep(20); + + if (fmc_send_cmd(fmdev, ASIC_ID_GET, REG_RD, NULL, + sizeof(asic_id), &asic_id, &resp_len)) + goto rel; + + if (fmc_send_cmd(fmdev, ASIC_VER_GET, REG_RD, NULL, + sizeof(asic_ver), &asic_ver, &resp_len)) + goto rel; + + fmdbg("ASIC ID: 0x%x , ASIC Version: %d\n", + be16_to_cpu(asic_id), be16_to_cpu(asic_ver)); + + sprintf(fw_name, "%s_%x.%d.bts", FM_FMC_FW_FILE_START, + be16_to_cpu(asic_id), be16_to_cpu(asic_ver)); + + ret = fm_download_firmware(fmdev, fw_name); + if (ret < 0) { + fmdbg("Failed to download firmware file %s\n", fw_name); + goto rel; + } + sprintf(fw_name, "%s_%x.%d.bts", (mode == FM_MODE_RX) ? + FM_RX_FW_FILE_START : FM_TX_FW_FILE_START, + be16_to_cpu(asic_id), be16_to_cpu(asic_ver)); + + ret = fm_download_firmware(fmdev, fw_name); + if (ret < 0) { + fmdbg("Failed to download firmware file %s\n", fw_name); + goto rel; + } else + return ret; +rel: + return fmc_release(fmdev); +} + +/* Set FM Modes(TX, RX, OFF) */ +int fmc_set_mode(struct fmdev *fmdev, u8 fm_mode) +{ + int ret = 0; + + if (fm_mode >= FM_MODE_ENTRY_MAX) { + fmerr("Invalid FM mode\n"); + return -EINVAL; + } + if (fmdev->curr_fmmode == fm_mode) { + fmdbg("Already fm is in mode(%d)\n", fm_mode); + return ret; + } + + switch (fm_mode) { + case FM_MODE_OFF: /* OFF Mode */ + ret = fm_power_down(fmdev); + if (ret < 0) { + fmerr("Failed to set OFF mode\n"); + return ret; + } + break; + + case FM_MODE_TX: /* TX Mode */ + case FM_MODE_RX: /* RX Mode */ + /* Power down before switching to TX or RX mode */ + if (fmdev->curr_fmmode != FM_MODE_OFF) { + ret = fm_power_down(fmdev); + if (ret < 0) { + fmerr("Failed to set OFF mode\n"); + return ret; + } + msleep(30); + } + ret = fm_power_up(fmdev, fm_mode); + if (ret < 0) { + fmerr("Failed to load firmware\n"); + return ret; + } + } + fmdev->curr_fmmode = fm_mode; + + /* Set default configuration */ + if (fmdev->curr_fmmode == FM_MODE_RX) { + fmdbg("Loading default rx configuration..\n"); + ret = load_default_rx_configuration(fmdev); + if (ret < 0) + fmerr("Failed to load default values\n"); + } + + return ret; +} + +/* Returns current FM mode (TX, RX, OFF) */ +int fmc_get_mode(struct fmdev *fmdev, u8 *fmmode) +{ + if (!test_bit(FM_CORE_READY, &fmdev->flag)) { + fmerr("FM core is not ready\n"); + return -EPERM; + } + if (fmmode == NULL) { + fmerr("Invalid memory\n"); + return -ENOMEM; + } + + *fmmode = fmdev->curr_fmmode; + return 0; +} + +/* Called by ST layer when FM packet is available */ +static long fm_st_receive(void *arg, struct sk_buff *skb) +{ + struct fmdev *fmdev; + + fmdev = (struct fmdev *)arg; + + if (skb == NULL) { + fmerr("Invalid SKB received from ST\n"); + return -EFAULT; + } + + if (skb->cb[0] != FM_PKT_LOGICAL_CHAN_NUMBER) { + fmerr("Received SKB (%p) is not FM Channel 8 pkt\n", skb); + return -EINVAL; + } + + memcpy(skb_push(skb, 1), &skb->cb[0], 1); + skb_queue_tail(&fmdev->rx_q, skb); + tasklet_schedule(&fmdev->rx_task); + + return 0; +} + +/* + * Called by ST layer to indicate protocol registration completion + * status. + */ +static void fm_st_reg_comp_cb(void *arg, char data) +{ + struct fmdev *fmdev; + + fmdev = (struct fmdev *)arg; + fmdev->streg_cbdata = data; + complete(&wait_for_fmdrv_reg_comp); +} + +/* + * This function will be called from FM V4L2 open function. + * Register with ST driver and initialize driver data. + */ +int fmc_prepare(struct fmdev *fmdev) +{ + static struct st_proto_s fm_st_proto; + int ret; + + if (test_bit(FM_CORE_READY, &fmdev->flag)) { + fmdbg("FM Core is already up\n"); + return 0; + } + + memset(&fm_st_proto, 0, sizeof(fm_st_proto)); + fm_st_proto.recv = fm_st_receive; + fm_st_proto.match_packet = NULL; + fm_st_proto.reg_complete_cb = fm_st_reg_comp_cb; + fm_st_proto.write = NULL; /* TI ST driver will fill write pointer */ + fm_st_proto.priv_data = fmdev; + fm_st_proto.chnl_id = 0x08; + fm_st_proto.max_frame_size = 0xff; + fm_st_proto.hdr_len = 1; + fm_st_proto.offset_len_in_hdr = 0; + fm_st_proto.len_size = 1; + fm_st_proto.reserve = 1; + + ret = st_register(&fm_st_proto); + if (ret == -EINPROGRESS) { + init_completion(&wait_for_fmdrv_reg_comp); + fmdev->streg_cbdata = -EINPROGRESS; + fmdbg("%s waiting for ST reg completion signal\n", __func__); + + if (!wait_for_completion_timeout(&wait_for_fmdrv_reg_comp, + FM_ST_REG_TIMEOUT)) { + fmerr("Timeout(%d sec), didn't get reg " + "completion signal from ST\n", + jiffies_to_msecs(FM_ST_REG_TIMEOUT) / 1000); + return -ETIMEDOUT; + } + if (fmdev->streg_cbdata != 0) { + fmerr("ST reg comp CB called with error " + "status %d\n", fmdev->streg_cbdata); + return -EAGAIN; + } + + ret = 0; + } else if (ret == -1) { + fmerr("st_register failed %d\n", ret); + return -EAGAIN; + } + + if (fm_st_proto.write != NULL) { + g_st_write = fm_st_proto.write; + } else { + fmerr("Failed to get ST write func pointer\n"); + ret = st_unregister(&fm_st_proto); + if (ret < 0) + fmerr("st_unregister failed %d\n", ret); + return -EAGAIN; + } + + spin_lock_init(&fmdev->rds_buff_lock); + spin_lock_init(&fmdev->resp_skb_lock); + + /* Initialize TX queue and TX tasklet */ + skb_queue_head_init(&fmdev->tx_q); + tasklet_init(&fmdev->tx_task, send_tasklet, (unsigned long)fmdev); + + /* Initialize RX Queue and RX tasklet */ + skb_queue_head_init(&fmdev->rx_q); + tasklet_init(&fmdev->rx_task, recv_tasklet, (unsigned long)fmdev); + + fmdev->irq_info.stage = 0; + atomic_set(&fmdev->tx_cnt, 1); + fmdev->resp_comp = NULL; + + init_timer(&fmdev->irq_info.timer); + fmdev->irq_info.timer.function = &int_timeout_handler; + fmdev->irq_info.timer.data = (unsigned long)fmdev; + /*TODO: add FM_STIC_EVENT later */ + fmdev->irq_info.mask = FM_MAL_EVENT; + + /* Region info */ + fmdev->rx.region = region_configs[default_radio_region]; + + fmdev->rx.mute_mode = FM_MUTE_OFF; + fmdev->rx.rf_depend_mute = FM_RX_RF_DEPENDENT_MUTE_OFF; + fmdev->rx.rds.flag = FM_RDS_DISABLE; + fmdev->rx.freq = FM_UNDEFINED_FREQ; + fmdev->rx.rds_mode = FM_RDS_SYSTEM_RDS; + fmdev->rx.af_mode = FM_RX_RDS_AF_SWITCH_MODE_OFF; + fmdev->irq_info.retry = 0; + + fm_rx_reset_rds_cache(fmdev); + init_waitqueue_head(&fmdev->rx.rds.read_queue); + + fm_rx_reset_station_info(fmdev); + set_bit(FM_CORE_READY, &fmdev->flag); + + return ret; +} + +/* + * This function will be called from FM V4L2 release function. + * Unregister from ST driver. + */ +int fmc_release(struct fmdev *fmdev) +{ + static struct st_proto_s fm_st_proto; + int ret; + + if (!test_bit(FM_CORE_READY, &fmdev->flag)) { + fmdbg("FM Core is already down\n"); + return 0; + } + /* Service pending read */ + wake_up_interruptible(&fmdev->rx.rds.read_queue); + + tasklet_kill(&fmdev->tx_task); + tasklet_kill(&fmdev->rx_task); + + skb_queue_purge(&fmdev->tx_q); + skb_queue_purge(&fmdev->rx_q); + + fmdev->resp_comp = NULL; + fmdev->rx.freq = 0; + + memset(&fm_st_proto, 0, sizeof(fm_st_proto)); + fm_st_proto.chnl_id = 0x08; + + ret = st_unregister(&fm_st_proto); + + if (ret < 0) + fmerr("Failed to de-register FM from ST %d\n", ret); + else + fmdbg("Successfully unregistered from ST\n"); + + clear_bit(FM_CORE_READY, &fmdev->flag); + return ret; +} + +/* + * Module init function. Ask FM V4L module to register video device. + * Allocate memory for FM driver context and RX RDS buffer. + */ +static int __init fm_drv_init(void) +{ + struct fmdev *fmdev = NULL; + int ret = -ENOMEM; + + fmdbg("FM driver version %s\n", FM_DRV_VERSION); + + fmdev = kzalloc(sizeof(struct fmdev), GFP_KERNEL); + if (NULL == fmdev) { + fmerr("Can't allocate operation structure memory\n"); + return ret; + } + fmdev->rx.rds.buf_size = default_rds_buf * FM_RDS_BLK_SIZE; + fmdev->rx.rds.buff = kzalloc(fmdev->rx.rds.buf_size, GFP_KERNEL); + if (NULL == fmdev->rx.rds.buff) { + fmerr("Can't allocate rds ring buffer\n"); + goto rel_dev; + } + + ret = fm_v4l2_init_video_device(fmdev, radio_nr); + if (ret < 0) + goto rel_rdsbuf; + + fmdev->irq_info.handlers = int_handler_table; + fmdev->curr_fmmode = FM_MODE_OFF; + fmdev->tx_data.pwr_lvl = FM_PWR_LVL_DEF; + fmdev->tx_data.preemph = FM_TX_PREEMPH_50US; + return ret; + +rel_rdsbuf: + kfree(fmdev->rx.rds.buff); +rel_dev: + kfree(fmdev); + + return ret; +} + +/* Module exit function. Ask FM V4L module to unregister video device */ +static void __exit fm_drv_exit(void) +{ + struct fmdev *fmdev = NULL; + + fmdev = fm_v4l2_deinit_video_device(); + if (fmdev != NULL) { + kfree(fmdev->rx.rds.buff); + kfree(fmdev); + } +} + +module_init(fm_drv_init); +module_exit(fm_drv_exit); + +/* ------------- Module Info ------------- */ +MODULE_AUTHOR("Manjunatha Halli <manjunatha_halli@ti.com>"); +MODULE_DESCRIPTION("FM Driver for TI's Connectivity chip. " FM_DRV_VERSION); +MODULE_VERSION(FM_DRV_VERSION); +MODULE_LICENSE("GPL"); diff --git a/drivers/media/radio/wl128x/fmdrv_common.h b/drivers/media/radio/wl128x/fmdrv_common.h new file mode 100644 index 0000000..d9b9c6c --- /dev/null +++ b/drivers/media/radio/wl128x/fmdrv_common.h @@ -0,0 +1,402 @@ +/* + * FM Driver for Connectivity chip of Texas Instruments. + * FM Common module header file + * + * Copyright (C) 2011 Texas Instruments + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#ifndef _FMDRV_COMMON_H +#define _FMDRV_COMMON_H + +#define FM_ST_REG_TIMEOUT msecs_to_jiffies(6000) /* 6 sec */ +#define FM_PKT_LOGICAL_CHAN_NUMBER 0x08 /* Logical channel 8 */ + +#define REG_RD 0x1 +#define REG_WR 0x0 + +struct fm_reg_table { + u8 opcode; + u8 type; + u8 *name; +}; + +#define STEREO_GET 0 +#define RSSI_LVL_GET 1 +#define IF_COUNT_GET 2 +#define FLAG_GET 3 +#define RDS_SYNC_GET 4 +#define RDS_DATA_GET 5 +#define FREQ_SET 10 +#define AF_FREQ_SET 11 +#define MOST_MODE_SET 12 +#define MOST_BLEND_SET 13 +#define DEMPH_MODE_SET 14 +#define SEARCH_LVL_SET 15 +#define BAND_SET 16 +#define MUTE_STATUS_SET 17 +#define RDS_PAUSE_LVL_SET 18 +#define RDS_PAUSE_DUR_SET 19 +#define RDS_MEM_SET 20 +#define RDS_BLK_B_SET 21 +#define RDS_MSK_B_SET 22 +#define RDS_PI_MASK_SET 23 +#define RDS_PI_SET 24 +#define RDS_SYSTEM_SET 25 +#define INT_MASK_SET 26 +#define SEARCH_DIR_SET 27 +#define VOLUME_SET 28 +#define AUDIO_ENABLE_SET 29 +#define PCM_MODE_SET 30 +#define I2S_MODE_CONFIG_SET 31 +#define POWER_SET 32 +#define INTX_CONFIG_SET 33 +#define PULL_EN_SET 34 +#define HILO_SET 35 +#define SWITCH2FREF 36 +#define FREQ_DRIFT_REPORT 37 + +#define PCE_GET 40 +#define FIRM_VER_GET 41 +#define ASIC_VER_GET 42 +#define ASIC_ID_GET 43 +#define MAN_ID_GET 44 +#define TUNER_MODE_SET 45 +#define STOP_SEARCH 46 +#define RDS_CNTRL_SET 47 + +#define WRITE_HARDWARE_REG 100 +#define CODE_DOWNLOAD 101 +#define RESET 102 + +#define FM_POWER_MODE 254 +#define FM_INTERRUPT 255 + +/* Transmitter API */ + +#define CHANL_SET 55 +#define CHANL_BW_SET 56 +#define REF_SET 57 +#define POWER_ENB_SET 90 +#define POWER_ATT_SET 58 +#define POWER_LEV_SET 59 +#define AUDIO_DEV_SET 60 +#define PILOT_DEV_SET 61 +#define RDS_DEV_SET 62 +#define TX_BAND_SET 65 +#define PUPD_SET 91 +#define AUDIO_IO_SET 63 +#define PREMPH_SET 64 +#define MONO_SET 66 +#define MUTE 92 +#define MPX_LMT_ENABLE 67 +#define PI_SET 93 +#define ECC_SET 69 +#define PTY 70 +#define AF 71 +#define DISPLAY_MODE 74 +#define RDS_REP_SET 77 +#define RDS_CONFIG_DATA_SET 98 +#define RDS_DATA_SET 99 +#define RDS_DATA_ENB 94 +#define TA_SET 78 +#define TP_SET 79 +#define DI_SET 80 +#define MS_SET 81 +#define PS_SCROLL_SPEED 82 +#define TX_AUDIO_LEVEL_TEST 96 +#define TX_AUDIO_LEVEL_TEST_THRESHOLD 73 +#define TX_AUDIO_INPUT_LEVEL_RANGE_SET 54 +#define RX_ANTENNA_SELECT 87 +#define I2C_DEV_ADDR_SET 86 +#define REF_ERR_CALIB_PARAM_SET 88 +#define REF_ERR_CALIB_PERIODICITY_SET 89 +#define SOC_INT_TRIGGER 52 +#define SOC_AUDIO_PATH_SET 83 +#define SOC_PCMI_OVERRIDE 84 +#define SOC_I2S_OVERRIDE 85 +#define RSSI_BLOCK_SCAN_FREQ_SET 95 +#define RSSI_BLOCK_SCAN_START 97 +#define RSSI_BLOCK_SCAN_DATA_GET 5 +#define READ_FMANT_TUNE_VALUE 104 + +/* SKB helpers */ +struct fm_skb_cb { + __u8 fm_op; + struct completion *completion; +}; + +#define fm_cb(skb) ((struct fm_skb_cb *)(skb->cb)) + +/* FM Channel-8 command message format */ +struct fm_cmd_msg_hdr { + __u8 hdr; /* Logical Channel-8 */ + __u8 len; /* Number of bytes follows */ + __u8 op; /* FM Opcode */ + __u8 rd_wr; /* Read/Write command */ + __u8 dlen; /* Length of payload */ +} __attribute__ ((packed)); + +#define FM_CMD_MSG_HDR_SIZE 5 /* sizeof(struct fm_cmd_msg_hdr) */ + +/* FM Channel-8 event messgage format */ +struct fm_event_msg_hdr { + __u8 header; /* Logical Channel-8 */ + __u8 len; /* Number of bytes follows */ + __u8 status; /* Event status */ + __u8 num_fm_hci_cmds; /* Number of pkts the host allowed to send */ + __u8 op; /* FM Opcode */ + __u8 rd_wr; /* Read/Write command */ + __u8 dlen; /* Length of payload */ +} __attribute__ ((packed)); + +#define FM_EVT_MSG_HDR_SIZE 7 /* sizeof(struct fm_event_msg_hdr) */ + +/* TI's magic number in firmware file */ +#define FM_FW_FILE_HEADER_MAGIC 0x42535442 + +#define FM_ENABLE 1 +#define FM_DISABLE 0 + +/* FLAG_GET register bits */ +#define FM_FR_EVENT (1 << 0) +#define FM_BL_EVENT (1 << 1) +#define FM_RDS_EVENT (1 << 2) +#define FM_BBLK_EVENT (1 << 3) +#define FM_LSYNC_EVENT (1 << 4) +#define FM_LEV_EVENT (1 << 5) +#define FM_IFFR_EVENT (1 << 6) +#define FM_PI_EVENT (1 << 7) +#define FM_PD_EVENT (1 << 8) +#define FM_STIC_EVENT (1 << 9) +#define FM_MAL_EVENT (1 << 10) +#define FM_POW_ENB_EVENT (1 << 11) + +/* + * Firmware files of FM. ASIC ID and ASIC version will be appened to this, + * later. + */ +#define FM_FMC_FW_FILE_START ("fmc_ch8") +#define FM_RX_FW_FILE_START ("fm_rx_ch8") +#define FM_TX_FW_FILE_START ("fm_tx_ch8") + +#define FM_UNDEFINED_FREQ 0xFFFFFFFF + +/* Band types */ +#define FM_BAND_EUROPE_US 0 +#define FM_BAND_JAPAN 1 + +/* Seek directions */ +#define FM_SEARCH_DIRECTION_DOWN 0 +#define FM_SEARCH_DIRECTION_UP 1 + +/* Tunner modes */ +#define FM_TUNER_STOP_SEARCH_MODE 0 +#define FM_TUNER_PRESET_MODE 1 +#define FM_TUNER_AUTONOMOUS_SEARCH_MODE 2 +#define FM_TUNER_AF_JUMP_MODE 3 + +/* Min and Max volume */ +#define FM_RX_VOLUME_MIN 0 +#define FM_RX_VOLUME_MAX 70 + +/* Volume gain step */ +#define FM_RX_VOLUME_GAIN_STEP 0x370 + +/* Mute modes */ +#define FM_MUTE_ON 0 +#define FM_MUTE_OFF 1 +#define FM_MUTE_ATTENUATE 2 + +#define FM_RX_UNMUTE_MODE 0x00 +#define FM_RX_RF_DEP_MODE 0x01 +#define FM_RX_AC_MUTE_MODE 0x02 +#define FM_RX_HARD_MUTE_LEFT_MODE 0x04 +#define FM_RX_HARD_MUTE_RIGHT_MODE 0x08 +#define FM_RX_SOFT_MUTE_FORCE_MODE 0x10 + +/* RF dependent mute mode */ +#define FM_RX_RF_DEPENDENT_MUTE_ON 1 +#define FM_RX_RF_DEPENDENT_MUTE_OFF 0 + +/* RSSI threshold min and max */ +#define FM_RX_RSSI_THRESHOLD_MIN -128 +#define FM_RX_RSSI_THRESHOLD_MAX 127 + +/* Stereo/Mono mode */ +#define FM_STEREO_MODE 0 +#define FM_MONO_MODE 1 +#define FM_STEREO_SOFT_BLEND 1 + +/* FM RX De-emphasis filter modes */ +#define FM_RX_EMPHASIS_FILTER_50_USEC 0 +#define FM_RX_EMPHASIS_FILTER_75_USEC 1 + +/* FM RDS modes */ +#define FM_RDS_DISABLE 0 +#define FM_RDS_ENABLE 1 + +#define FM_NO_PI_CODE 0 + +/* FM and RX RDS block enable/disable */ +#define FM_RX_PWR_SET_FM_ON_RDS_OFF 0x1 +#define FM_RX_PWR_SET_FM_AND_RDS_BLK_ON 0x3 +#define FM_RX_PWR_SET_FM_AND_RDS_BLK_OFF 0x0 + +/* RX RDS */ +#define FM_RX_RDS_FLUSH_FIFO 0x1 +#define FM_RX_RDS_FIFO_THRESHOLD 64 /* tuples */ +#define FM_RDS_BLK_SIZE 3 /* 3 bytes */ + +/* RDS block types */ +#define FM_RDS_BLOCK_A 0 +#define FM_RDS_BLOCK_B 1 +#define FM_RDS_BLOCK_C 2 +#define FM_RDS_BLOCK_Ctag 3 +#define FM_RDS_BLOCK_D 4 +#define FM_RDS_BLOCK_E 5 + +#define FM_RDS_BLK_IDX_A 0 +#define FM_RDS_BLK_IDX_B 1 +#define FM_RDS_BLK_IDX_C 2 +#define FM_RDS_BLK_IDX_D 3 +#define FM_RDS_BLK_IDX_UNKNOWN 0xF0 + +#define FM_RDS_STATUS_ERR_MASK 0x18 + +/* + * Represents an RDS group type & version. + * There are 15 groups, each group has 2 versions: A and B. + */ +#define FM_RDS_GROUP_TYPE_MASK_0A ((unsigned long)1<<0) +#define FM_RDS_GROUP_TYPE_MASK_0B ((unsigned long)1<<1) +#define FM_RDS_GROUP_TYPE_MASK_1A ((unsigned long)1<<2) +#define FM_RDS_GROUP_TYPE_MASK_1B ((unsigned long)1<<3) +#define FM_RDS_GROUP_TYPE_MASK_2A ((unsigned long)1<<4) +#define FM_RDS_GROUP_TYPE_MASK_2B ((unsigned long)1<<5) +#define FM_RDS_GROUP_TYPE_MASK_3A ((unsigned long)1<<6) +#define FM_RDS_GROUP_TYPE_MASK_3B ((unsigned long)1<<7) +#define FM_RDS_GROUP_TYPE_MASK_4A ((unsigned long)1<<8) +#define FM_RDS_GROUP_TYPE_MASK_4B ((unsigned long)1<<9) +#define FM_RDS_GROUP_TYPE_MASK_5A ((unsigned long)1<<10) +#define FM_RDS_GROUP_TYPE_MASK_5B ((unsigned long)1<<11) +#define FM_RDS_GROUP_TYPE_MASK_6A ((unsigned long)1<<12) +#define FM_RDS_GROUP_TYPE_MASK_6B ((unsigned long)1<<13) +#define FM_RDS_GROUP_TYPE_MASK_7A ((unsigned long)1<<14) +#define FM_RDS_GROUP_TYPE_MASK_7B ((unsigned long)1<<15) +#define FM_RDS_GROUP_TYPE_MASK_8A ((unsigned long)1<<16) +#define FM_RDS_GROUP_TYPE_MASK_8B ((unsigned long)1<<17) +#define FM_RDS_GROUP_TYPE_MASK_9A ((unsigned long)1<<18) +#define FM_RDS_GROUP_TYPE_MASK_9B ((unsigned long)1<<19) +#define FM_RDS_GROUP_TYPE_MASK_10A ((unsigned long)1<<20) +#define FM_RDS_GROUP_TYPE_MASK_10B ((unsigned long)1<<21) +#define FM_RDS_GROUP_TYPE_MASK_11A ((unsigned long)1<<22) +#define FM_RDS_GROUP_TYPE_MASK_11B ((unsigned long)1<<23) +#define FM_RDS_GROUP_TYPE_MASK_12A ((unsigned long)1<<24) +#define FM_RDS_GROUP_TYPE_MASK_12B ((unsigned long)1<<25) +#define FM_RDS_GROUP_TYPE_MASK_13A ((unsigned long)1<<26) +#define FM_RDS_GROUP_TYPE_MASK_13B ((unsigned long)1<<27) +#define FM_RDS_GROUP_TYPE_MASK_14A ((unsigned long)1<<28) +#define FM_RDS_GROUP_TYPE_MASK_14B ((unsigned long)1<<29) +#define FM_RDS_GROUP_TYPE_MASK_15A ((unsigned long)1<<30) +#define FM_RDS_GROUP_TYPE_MASK_15B ((unsigned long)1<<31) + +/* RX Alternate Frequency info */ +#define FM_RDS_MIN_AF 1 +#define FM_RDS_MAX_AF 204 +#define FM_RDS_MAX_AF_JAPAN 140 +#define FM_RDS_1_AF_FOLLOWS 225 +#define FM_RDS_25_AF_FOLLOWS 249 + +/* RDS system type (RDS/RBDS) */ +#define FM_RDS_SYSTEM_RDS 0 +#define FM_RDS_SYSTEM_RBDS 1 + +/* AF on/off */ +#define FM_RX_RDS_AF_SWITCH_MODE_ON 1 +#define FM_RX_RDS_AF_SWITCH_MODE_OFF 0 + +/* Retry count when interrupt process goes wrong */ +#define FM_IRQ_TIMEOUT_RETRY_MAX 5 /* 5 times */ + +/* Audio IO set values */ +#define FM_RX_AUDIO_ENABLE_I2S 0x01 +#define FM_RX_AUDIO_ENABLE_ANALOG 0x02 +#define FM_RX_AUDIO_ENABLE_I2S_AND_ANALOG 0x03 +#define FM_RX_AUDIO_ENABLE_DISABLE 0x00 + +/* HI/LO set values */ +#define FM_RX_IFFREQ_TO_HI_SIDE 0x0 +#define FM_RX_IFFREQ_TO_LO_SIDE 0x1 +#define FM_RX_IFFREQ_HILO_AUTOMATIC 0x2 + +/* + * Default RX mode configuration. Chip will be configured + * with this default values after loading RX firmware. + */ +#define FM_DEFAULT_RX_VOLUME 10 +#define FM_DEFAULT_RSSI_THRESHOLD 3 + +/* Range for TX power level in units for dB/uV */ +#define FM_PWR_LVL_LOW 91 +#define FM_PWR_LVL_HIGH 122 + +/* Chip specific default TX power level value */ +#define FM_PWR_LVL_DEF 4 + +/* FM TX Pre-emphasis filter values */ +#define FM_TX_PREEMPH_OFF 1 +#define FM_TX_PREEMPH_50US 0 +#define FM_TX_PREEMPH_75US 2 + +/* FM TX antenna impedance values */ +#define FM_TX_ANT_IMP_50 0 +#define FM_TX_ANT_IMP_200 1 +#define FM_TX_ANT_IMP_500 2 + +/* Functions exported by FM common sub-module */ +int fmc_prepare(struct fmdev *); +int fmc_release(struct fmdev *); + +void fmc_update_region_info(struct fmdev *, u8); +int fmc_send_cmd(struct fmdev *, u8, u16, + void *, unsigned int, void *, int *); +int fmc_is_rds_data_available(struct fmdev *, struct file *, + struct poll_table_struct *); +int fmc_transfer_rds_from_internal_buff(struct fmdev *, struct file *, + u8 __user *, size_t); + +int fmc_set_freq(struct fmdev *, u32); +int fmc_set_mode(struct fmdev *, u8); +int fmc_set_region(struct fmdev *, u8); +int fmc_set_mute_mode(struct fmdev *, u8); +int fmc_set_stereo_mono(struct fmdev *, u16); +int fmc_set_rds_mode(struct fmdev *, u8); + +int fmc_get_freq(struct fmdev *, u32 *); +int fmc_get_region(struct fmdev *, u8 *); +int fmc_get_mode(struct fmdev *, u8 *); + +/* + * channel spacing + */ +#define FM_CHANNEL_SPACING_50KHZ 1 +#define FM_CHANNEL_SPACING_100KHZ 2 +#define FM_CHANNEL_SPACING_200KHZ 4 +#define FM_FREQ_MUL 50 + +#endif + diff --git a/drivers/media/radio/wl128x/fmdrv_rx.c b/drivers/media/radio/wl128x/fmdrv_rx.c new file mode 100644 index 0000000..ebf09a3 --- /dev/null +++ b/drivers/media/radio/wl128x/fmdrv_rx.c @@ -0,0 +1,849 @@ +/* + * FM Driver for Connectivity chip of Texas Instruments. + * This sub-module of FM driver implements FM RX functionality. + * + * Copyright (C) 2011 Texas Instruments + * Author: Raja Mani <raja_mani@ti.com> + * Author: Manjunatha Halli <manjunatha_halli@ti.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include "fmdrv.h" +#include "fmdrv_common.h" +#include "fmdrv_rx.h" + +void fm_rx_reset_rds_cache(struct fmdev *fmdev) +{ + fmdev->rx.rds.flag = FM_RDS_DISABLE; + fmdev->rx.rds.last_blk_idx = 0; + fmdev->rx.rds.wr_idx = 0; + fmdev->rx.rds.rd_idx = 0; + + if (fmdev->rx.af_mode == FM_RX_RDS_AF_SWITCH_MODE_ON) + fmdev->irq_info.mask |= FM_LEV_EVENT; +} + +void fm_rx_reset_station_info(struct fmdev *fmdev) +{ + fmdev->rx.stat_info.picode = FM_NO_PI_CODE; + fmdev->rx.stat_info.afcache_size = 0; + fmdev->rx.stat_info.af_list_max = 0; +} + +int fm_rx_set_freq(struct fmdev *fmdev, u32 freq) +{ + unsigned long timeleft; + u16 payload, curr_frq, intr_flag; + u32 curr_frq_in_khz; + u32 resp_len; + int ret; + + if (freq < fmdev->rx.region.bot_freq || freq > fmdev->rx.region.top_freq) { + fmerr("Invalid frequency %d\n", freq); + return -EINVAL; + } + + /* Set audio enable */ + payload = FM_RX_AUDIO_ENABLE_I2S_AND_ANALOG; + + ret = fmc_send_cmd(fmdev, AUDIO_ENABLE_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + /* Set hilo to automatic selection */ + payload = FM_RX_IFFREQ_HILO_AUTOMATIC; + ret = fmc_send_cmd(fmdev, HILO_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + /* Calculate frequency index and set*/ + payload = (freq - fmdev->rx.region.bot_freq) / FM_FREQ_MUL; + + ret = fmc_send_cmd(fmdev, FREQ_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + /* Read flags - just to clear any pending interrupts if we had */ + ret = fmc_send_cmd(fmdev, FLAG_GET, REG_RD, NULL, 2, NULL, NULL); + if (ret < 0) + return ret; + + /* Enable FR, BL interrupts */ + intr_flag = fmdev->irq_info.mask; + fmdev->irq_info.mask = (FM_FR_EVENT | FM_BL_EVENT); + payload = fmdev->irq_info.mask; + ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + /* Start tune */ + payload = FM_TUNER_PRESET_MODE; + ret = fmc_send_cmd(fmdev, TUNER_MODE_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + goto exit; + + /* Wait for tune ended interrupt */ + init_completion(&fmdev->maintask_comp); + timeleft = wait_for_completion_timeout(&fmdev->maintask_comp, + FM_DRV_TX_TIMEOUT); + if (!timeleft) { + fmerr("Timeout(%d sec),didn't get tune ended int\n", + jiffies_to_msecs(FM_DRV_TX_TIMEOUT) / 1000); + ret = -ETIMEDOUT; + goto exit; + } + + /* Read freq back to confirm */ + ret = fmc_send_cmd(fmdev, FREQ_SET, REG_RD, NULL, 2, &curr_frq, &resp_len); + if (ret < 0) + goto exit; + + curr_frq = be16_to_cpu(curr_frq); + curr_frq_in_khz = (fmdev->rx.region.bot_freq + ((u32)curr_frq * FM_FREQ_MUL)); + + if (curr_frq_in_khz != freq) { + pr_info("Frequency is set to (%d) but " + "requested freq is (%d)\n", curr_frq_in_khz, freq); + } + + /* Update local cache */ + fmdev->rx.freq = curr_frq_in_khz; +exit: + /* Re-enable default FM interrupts */ + fmdev->irq_info.mask = intr_flag; + payload = fmdev->irq_info.mask; + ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + /* Reset RDS cache and current station pointers */ + fm_rx_reset_rds_cache(fmdev); + fm_rx_reset_station_info(fmdev); + + return ret; +} + +static int fm_rx_set_channel_spacing(struct fmdev *fmdev, u32 spacing) +{ + u16 payload; + int ret; + + if (spacing > 0 && spacing <= 50000) + spacing = FM_CHANNEL_SPACING_50KHZ; + else if (spacing > 50000 && spacing <= 100000) + spacing = FM_CHANNEL_SPACING_100KHZ; + else + spacing = FM_CHANNEL_SPACING_200KHZ; + + /* set channel spacing */ + payload = spacing; + ret = fmc_send_cmd(fmdev, CHANL_BW_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + fmdev->rx.region.chanl_space = spacing * FM_FREQ_MUL; + + return ret; +} + +int fm_rx_seek(struct fmdev *fmdev, u32 seek_upward, + u32 wrap_around, u32 spacing) +{ + u32 resp_len; + u16 curr_frq, next_frq, last_frq; + u16 payload, int_reason, intr_flag; + u16 offset, space_idx; + unsigned long timeleft; + int ret; + + /* Set channel spacing */ + ret = fm_rx_set_channel_spacing(fmdev, spacing); + if (ret < 0) { + fmerr("Failed to set channel spacing\n"); + return ret; + } + + /* Read the current frequency from chip */ + ret = fmc_send_cmd(fmdev, FREQ_SET, REG_RD, NULL, + sizeof(curr_frq), &curr_frq, &resp_len); + if (ret < 0) + return ret; + + curr_frq = be16_to_cpu(curr_frq); + last_frq = (fmdev->rx.region.top_freq - fmdev->rx.region.bot_freq) / FM_FREQ_MUL; + + /* Check the offset in order to be aligned to the channel spacing*/ + space_idx = fmdev->rx.region.chanl_space / FM_FREQ_MUL; + offset = curr_frq % space_idx; + + next_frq = seek_upward ? curr_frq + space_idx /* Seek Up */ : + curr_frq - space_idx /* Seek Down */ ; + + /* + * Add or subtract offset in order to stay aligned to the channel + * spacing. + */ + if ((short)next_frq < 0) + next_frq = last_frq - offset; + else if (next_frq > last_frq) + next_frq = 0 + offset; + +again: + /* Set calculated next frequency to perform seek */ + payload = next_frq; + ret = fmc_send_cmd(fmdev, FREQ_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + /* Set search direction (0:Seek Down, 1:Seek Up) */ + payload = (seek_upward ? FM_SEARCH_DIRECTION_UP : FM_SEARCH_DIRECTION_DOWN); + ret = fmc_send_cmd(fmdev, SEARCH_DIR_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + /* Read flags - just to clear any pending interrupts if we had */ + ret = fmc_send_cmd(fmdev, FLAG_GET, REG_RD, NULL, 2, NULL, NULL); + if (ret < 0) + return ret; + + /* Enable FR, BL interrupts */ + intr_flag = fmdev->irq_info.mask; + fmdev->irq_info.mask = (FM_FR_EVENT | FM_BL_EVENT); + payload = fmdev->irq_info.mask; + ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + /* Start seek */ + payload = FM_TUNER_AUTONOMOUS_SEARCH_MODE; + ret = fmc_send_cmd(fmdev, TUNER_MODE_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + /* Wait for tune ended/band limit reached interrupt */ + init_completion(&fmdev->maintask_comp); + timeleft = wait_for_completion_timeout(&fmdev->maintask_comp, + FM_DRV_RX_SEEK_TIMEOUT); + if (!timeleft) { + fmerr("Timeout(%d sec),didn't get tune ended int\n", + jiffies_to_msecs(FM_DRV_RX_SEEK_TIMEOUT) / 1000); + return -ENODATA; + } + + int_reason = fmdev->irq_info.flag & (FM_TUNE_COMPLETE | FM_BAND_LIMIT); + + /* Re-enable default FM interrupts */ + fmdev->irq_info.mask = intr_flag; + payload = fmdev->irq_info.mask; + ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + if (int_reason & FM_BL_EVENT) { + if (wrap_around == 0) { + fmdev->rx.freq = seek_upward ? + fmdev->rx.region.top_freq : + fmdev->rx.region.bot_freq; + } else { + fmdev->rx.freq = seek_upward ? + fmdev->rx.region.bot_freq : + fmdev->rx.region.top_freq; + /* Calculate frequency index to write */ + next_frq = (fmdev->rx.freq - + fmdev->rx.region.bot_freq) / FM_FREQ_MUL; + goto again; + } + } else { + /* Read freq to know where operation tune operation stopped */ + ret = fmc_send_cmd(fmdev, FREQ_SET, REG_RD, NULL, 2, + &curr_frq, &resp_len); + if (ret < 0) + return ret; + + curr_frq = be16_to_cpu(curr_frq); + fmdev->rx.freq = (fmdev->rx.region.bot_freq + + ((u32)curr_frq * FM_FREQ_MUL)); + + } + /* Reset RDS cache and current station pointers */ + fm_rx_reset_rds_cache(fmdev); + fm_rx_reset_station_info(fmdev); + + return ret; +} + +int fm_rx_set_volume(struct fmdev *fmdev, u16 vol_to_set) +{ + u16 payload; + int ret; + + if (fmdev->curr_fmmode != FM_MODE_RX) + return -EPERM; + + if (vol_to_set > FM_RX_VOLUME_MAX) { + fmerr("Volume is not within(%d-%d) range\n", + FM_RX_VOLUME_MIN, FM_RX_VOLUME_MAX); + return -EINVAL; + } + vol_to_set *= FM_RX_VOLUME_GAIN_STEP; + + payload = vol_to_set; + ret = fmc_send_cmd(fmdev, VOLUME_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + fmdev->rx.volume = vol_to_set; + return ret; +} + +/* Get volume */ +int fm_rx_get_volume(struct fmdev *fmdev, u16 *curr_vol) +{ + if (fmdev->curr_fmmode != FM_MODE_RX) + return -EPERM; + + if (curr_vol == NULL) { + fmerr("Invalid memory\n"); + return -ENOMEM; + } + + *curr_vol = fmdev->rx.volume / FM_RX_VOLUME_GAIN_STEP; + + return 0; +} + +/* To get current band's bottom and top frequency */ +int fm_rx_get_band_freq_range(struct fmdev *fmdev, u32 *bot_freq, u32 *top_freq) +{ + if (bot_freq != NULL) + *bot_freq = fmdev->rx.region.bot_freq; + + if (top_freq != NULL) + *top_freq = fmdev->rx.region.top_freq; + + return 0; +} + +/* Returns current band index (0-Europe/US; 1-Japan) */ +void fm_rx_get_region(struct fmdev *fmdev, u8 *region) +{ + *region = fmdev->rx.region.fm_band; +} + +/* Sets band (0-Europe/US; 1-Japan) */ +int fm_rx_set_region(struct fmdev *fmdev, u8 region_to_set) +{ + u16 payload; + u32 new_frq = 0; + int ret; + + if (region_to_set != FM_BAND_EUROPE_US && + region_to_set != FM_BAND_JAPAN) { + fmerr("Invalid band\n"); + return -EINVAL; + } + + if (fmdev->rx.region.fm_band == region_to_set) { + fmerr("Requested band is already configured\n"); + return 0; + } + + /* Send cmd to set the band */ + payload = (u16)region_to_set; + ret = fmc_send_cmd(fmdev, BAND_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + fmc_update_region_info(fmdev, region_to_set); + + /* Check whether current RX frequency is within band boundary */ + if (fmdev->rx.freq < fmdev->rx.region.bot_freq) + new_frq = fmdev->rx.region.bot_freq; + else if (fmdev->rx.freq > fmdev->rx.region.top_freq) + new_frq = fmdev->rx.region.top_freq; + + if (new_frq) { + fmdbg("Current freq is not within band limit boundary," + "switching to %d KHz\n", new_frq); + /* Current RX frequency is not in range. So, update it */ + ret = fm_rx_set_freq(fmdev, new_frq); + } + + return ret; +} + +/* Reads current mute mode (Mute Off/On/Attenuate)*/ +int fm_rx_get_mute_mode(struct fmdev *fmdev, u8 *curr_mute_mode) +{ + if (fmdev->curr_fmmode != FM_MODE_RX) + return -EPERM; + + if (curr_mute_mode == NULL) { + fmerr("Invalid memory\n"); + return -ENOMEM; + } + + *curr_mute_mode = fmdev->rx.mute_mode; + + return 0; +} + +static int fm_config_rx_mute_reg(struct fmdev *fmdev) +{ + u16 payload, muteval; + int ret; + + muteval = 0; + switch (fmdev->rx.mute_mode) { + case FM_MUTE_ON: + muteval = FM_RX_AC_MUTE_MODE; + break; + + case FM_MUTE_OFF: + muteval = FM_RX_UNMUTE_MODE; + break; + + case FM_MUTE_ATTENUATE: + muteval = FM_RX_SOFT_MUTE_FORCE_MODE; + break; + } + if (fmdev->rx.rf_depend_mute == FM_RX_RF_DEPENDENT_MUTE_ON) + muteval |= FM_RX_RF_DEP_MODE; + else + muteval &= ~FM_RX_RF_DEP_MODE; + + payload = muteval; + ret = fmc_send_cmd(fmdev, MUTE_STATUS_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + return 0; +} + +/* Configures mute mode (Mute Off/On/Attenuate) */ +int fm_rx_set_mute_mode(struct fmdev *fmdev, u8 mute_mode_toset) +{ + u8 org_state; + int ret; + + if (fmdev->rx.mute_mode == mute_mode_toset) + return 0; + + org_state = fmdev->rx.mute_mode; + fmdev->rx.mute_mode = mute_mode_toset; + + ret = fm_config_rx_mute_reg(fmdev); + if (ret < 0) { + fmdev->rx.mute_mode = org_state; + return ret; + } + + return 0; +} + +/* Gets RF dependent soft mute mode enable/disable status */ +int fm_rx_get_rfdepend_softmute(struct fmdev *fmdev, u8 *curr_mute_mode) +{ + if (fmdev->curr_fmmode != FM_MODE_RX) + return -EPERM; + + if (curr_mute_mode == NULL) { + fmerr("Invalid memory\n"); + return -ENOMEM; + } + + *curr_mute_mode = fmdev->rx.rf_depend_mute; + + return 0; +} + +/* Sets RF dependent soft mute mode */ +int fm_rx_set_rfdepend_softmute(struct fmdev *fmdev, u8 rfdepend_mute) +{ + u8 org_state; + int ret; + + if (fmdev->curr_fmmode != FM_MODE_RX) + return -EPERM; + + if (rfdepend_mute != FM_RX_RF_DEPENDENT_MUTE_ON && + rfdepend_mute != FM_RX_RF_DEPENDENT_MUTE_OFF) { + fmerr("Invalid RF dependent soft mute\n"); + return -EINVAL; + } + if (fmdev->rx.rf_depend_mute == rfdepend_mute) + return 0; + + org_state = fmdev->rx.rf_depend_mute; + fmdev->rx.rf_depend_mute = rfdepend_mute; + + ret = fm_config_rx_mute_reg(fmdev); + if (ret < 0) { + fmdev->rx.rf_depend_mute = org_state; + return ret; + } + + return 0; +} + +/* Returns the signal strength level of current channel */ +int fm_rx_get_rssi_level(struct fmdev *fmdev, u16 *rssilvl) +{ + u16 curr_rssi_lel; + u32 resp_len; + int ret; + + if (rssilvl == NULL) { + fmerr("Invalid memory\n"); + return -ENOMEM; + } + /* Read current RSSI level */ + ret = fmc_send_cmd(fmdev, RSSI_LVL_GET, REG_RD, NULL, 2, + &curr_rssi_lel, &resp_len); + if (ret < 0) + return ret; + + *rssilvl = be16_to_cpu(curr_rssi_lel); + + return 0; +} + +/* + * Sets the signal strength level that once reached + * will stop the auto search process + */ +int fm_rx_set_rssi_threshold(struct fmdev *fmdev, short rssi_lvl_toset) +{ + u16 payload; + int ret; + + if (rssi_lvl_toset < FM_RX_RSSI_THRESHOLD_MIN || + rssi_lvl_toset > FM_RX_RSSI_THRESHOLD_MAX) { + fmerr("Invalid RSSI threshold level\n"); + return -EINVAL; + } + payload = (u16)rssi_lvl_toset; + ret = fmc_send_cmd(fmdev, SEARCH_LVL_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + fmdev->rx.rssi_threshold = rssi_lvl_toset; + + return 0; +} + +/* Returns current RX RSSI threshold value */ +int fm_rx_get_rssi_threshold(struct fmdev *fmdev, short *curr_rssi_lvl) +{ + if (fmdev->curr_fmmode != FM_MODE_RX) + return -EPERM; + + if (curr_rssi_lvl == NULL) { + fmerr("Invalid memory\n"); + return -ENOMEM; + } + + *curr_rssi_lvl = fmdev->rx.rssi_threshold; + + return 0; +} + +/* Sets RX stereo/mono modes */ +int fm_rx_set_stereo_mono(struct fmdev *fmdev, u16 mode) +{ + u16 payload; + int ret; + + if (mode != FM_STEREO_MODE && mode != FM_MONO_MODE) { + fmerr("Invalid mode\n"); + return -EINVAL; + } + + /* Set stereo/mono mode */ + payload = (u16)mode; + ret = fmc_send_cmd(fmdev, MOST_MODE_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + /* Set stereo blending mode */ + payload = FM_STEREO_SOFT_BLEND; + ret = fmc_send_cmd(fmdev, MOST_BLEND_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + return 0; +} + +/* Gets current RX stereo/mono mode */ +int fm_rx_get_stereo_mono(struct fmdev *fmdev, u16 *mode) +{ + u16 curr_mode; + u32 resp_len; + int ret; + + if (mode == NULL) { + fmerr("Invalid memory\n"); + return -ENOMEM; + } + + ret = fmc_send_cmd(fmdev, MOST_MODE_SET, REG_RD, NULL, 2, + &curr_mode, &resp_len); + if (ret < 0) + return ret; + + *mode = be16_to_cpu(curr_mode); + + return 0; +} + +/* Choose RX de-emphasis filter mode (50us/75us) */ +int fm_rx_set_deemphasis_mode(struct fmdev *fmdev, u16 mode) +{ + u16 payload; + int ret; + + if (fmdev->curr_fmmode != FM_MODE_RX) + return -EPERM; + + if (mode != FM_RX_EMPHASIS_FILTER_50_USEC && + mode != FM_RX_EMPHASIS_FILTER_75_USEC) { + fmerr("Invalid rx de-emphasis mode (%d)\n", mode); + return -EINVAL; + } + + payload = mode; + ret = fmc_send_cmd(fmdev, DEMPH_MODE_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + fmdev->rx.deemphasis_mode = mode; + + return 0; +} + +/* Gets current RX de-emphasis filter mode */ +int fm_rx_get_deemph_mode(struct fmdev *fmdev, u16 *curr_deemphasis_mode) +{ + if (fmdev->curr_fmmode != FM_MODE_RX) + return -EPERM; + + if (curr_deemphasis_mode == NULL) { + fmerr("Invalid memory\n"); + return -ENOMEM; + } + + *curr_deemphasis_mode = fmdev->rx.deemphasis_mode; + + return 0; +} + +/* Enable/Disable RX RDS */ +int fm_rx_set_rds_mode(struct fmdev *fmdev, u8 rds_en_dis) +{ + u16 payload; + int ret; + + if (rds_en_dis != FM_RDS_ENABLE && rds_en_dis != FM_RDS_DISABLE) { + fmerr("Invalid rds option\n"); + return -EINVAL; + } + + if (rds_en_dis == FM_RDS_ENABLE + && fmdev->rx.rds.flag == FM_RDS_DISABLE) { + /* Turn on RX RDS and RDS circuit */ + payload = FM_RX_PWR_SET_FM_AND_RDS_BLK_ON; + ret = fmc_send_cmd(fmdev, POWER_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + /* Clear and reset RDS FIFO */ + payload = FM_RX_RDS_FLUSH_FIFO; + ret = fmc_send_cmd(fmdev, RDS_CNTRL_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + /* Read flags - just to clear any pending interrupts. */ + ret = fmc_send_cmd(fmdev, FLAG_GET, REG_RD, NULL, 2, + NULL, NULL); + if (ret < 0) + return ret; + + /* Set RDS FIFO threshold value */ + payload = FM_RX_RDS_FIFO_THRESHOLD; + ret = fmc_send_cmd(fmdev, RDS_MEM_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + /* Enable RDS interrupt */ + fmdev->irq_info.mask |= FM_RDS_EVENT; + payload = fmdev->irq_info.mask; + ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) { + fmdev->irq_info.mask &= ~FM_RDS_EVENT; + return ret; + } + + /* Update our local flag */ + fmdev->rx.rds.flag = FM_RDS_ENABLE; + } else if (rds_en_dis == FM_RDS_DISABLE + && fmdev->rx.rds.flag == FM_RDS_ENABLE) { + /* Turn off RX RDS */ + payload = FM_RX_PWR_SET_FM_ON_RDS_OFF; + ret = fmc_send_cmd(fmdev, POWER_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + /* Reset RDS pointers */ + fmdev->rx.rds.last_blk_idx = 0; + fmdev->rx.rds.wr_idx = 0; + fmdev->rx.rds.rd_idx = 0; + fm_rx_reset_station_info(fmdev); + + /* Update RDS local cache */ + fmdev->irq_info.mask &= ~(FM_RDS_EVENT); + fmdev->rx.rds.flag = FM_RDS_DISABLE; + } + + return 0; +} + +/* Returns current RX RDS enable/disable status */ +int fm_rx_get_rds_mode(struct fmdev *fmdev, u8 *curr_rds_en_dis) +{ + if (fmdev->curr_fmmode != FM_MODE_RX) + return -EPERM; + + if (curr_rds_en_dis == NULL) { + fmerr("Invalid memory\n"); + return -ENOMEM; + } + + *curr_rds_en_dis = fmdev->rx.rds.flag; + + return 0; +} + +/* Sets RDS operation mode (RDS/RDBS) */ +int fm_rx_set_rds_system(struct fmdev *fmdev, u8 rds_mode) +{ + u16 payload; + int ret; + + if (fmdev->curr_fmmode != FM_MODE_RX) + return -EPERM; + + if (rds_mode != FM_RDS_SYSTEM_RDS && rds_mode != FM_RDS_SYSTEM_RBDS) { + fmerr("Invalid rds mode\n"); + return -EINVAL; + } + /* Set RDS operation mode */ + payload = (u16)rds_mode; + ret = fmc_send_cmd(fmdev, RDS_SYSTEM_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + fmdev->rx.rds_mode = rds_mode; + + return 0; +} + +/* Returns current RDS operation mode */ +int fm_rx_get_rds_system(struct fmdev *fmdev, u8 *rds_mode) +{ + if (fmdev->curr_fmmode != FM_MODE_RX) + return -EPERM; + + if (rds_mode == NULL) { + fmerr("Invalid memory\n"); + return -ENOMEM; + } + + *rds_mode = fmdev->rx.rds_mode; + + return 0; +} + +/* Configures Alternate Frequency switch mode */ +int fm_rx_set_af_switch(struct fmdev *fmdev, u8 af_mode) +{ + u16 payload; + int ret; + + if (fmdev->curr_fmmode != FM_MODE_RX) + return -EPERM; + + if (af_mode != FM_RX_RDS_AF_SWITCH_MODE_ON && + af_mode != FM_RX_RDS_AF_SWITCH_MODE_OFF) { + fmerr("Invalid af mode\n"); + return -EINVAL; + } + /* Enable/disable low RSSI interrupt based on af_mode */ + if (af_mode == FM_RX_RDS_AF_SWITCH_MODE_ON) + fmdev->irq_info.mask |= FM_LEV_EVENT; + else + fmdev->irq_info.mask &= ~FM_LEV_EVENT; + + payload = fmdev->irq_info.mask; + ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + fmdev->rx.af_mode = af_mode; + + return 0; +} + +/* Returns Alternate Frequency switch status */ +int fm_rx_get_af_switch(struct fmdev *fmdev, u8 *af_mode) +{ + if (fmdev->curr_fmmode != FM_MODE_RX) + return -EPERM; + + if (af_mode == NULL) { + fmerr("Invalid memory\n"); + return -ENOMEM; + } + + *af_mode = fmdev->rx.af_mode; + + return 0; +} diff --git a/drivers/media/radio/wl128x/fmdrv_rx.h b/drivers/media/radio/wl128x/fmdrv_rx.h new file mode 100644 index 0000000..32add81 --- /dev/null +++ b/drivers/media/radio/wl128x/fmdrv_rx.h @@ -0,0 +1,59 @@ +/* + * FM Driver for Connectivity chip of Texas Instruments. + * FM RX module header. + * + * Copyright (C) 2011 Texas Instruments + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#ifndef _FMDRV_RX_H +#define _FMDRV_RX_H + +int fm_rx_set_freq(struct fmdev *, u32); +int fm_rx_set_mute_mode(struct fmdev *, u8); +int fm_rx_set_stereo_mono(struct fmdev *, u16); +int fm_rx_set_rds_mode(struct fmdev *, u8); +int fm_rx_set_rds_system(struct fmdev *, u8); +int fm_rx_set_volume(struct fmdev *, u16); +int fm_rx_set_rssi_threshold(struct fmdev *, short); +int fm_rx_set_region(struct fmdev *, u8); +int fm_rx_set_rfdepend_softmute(struct fmdev *, u8); +int fm_rx_set_deemphasis_mode(struct fmdev *, u16); +int fm_rx_set_af_switch(struct fmdev *, u8); + +void fm_rx_reset_rds_cache(struct fmdev *); +void fm_rx_reset_station_info(struct fmdev *); + +int fm_rx_seek(struct fmdev *, u32, u32, u32); + +int fm_rx_get_rds_mode(struct fmdev *, u8 *); +int fm_rx_get_rds_system(struct fmdev *, u8 *); +int fm_rx_get_mute_mode(struct fmdev *, u8 *); +int fm_rx_get_volume(struct fmdev *, u16 *); +int fm_rx_get_band_freq_range(struct fmdev *, + u32 *, u32 *); +int fm_rx_get_stereo_mono(struct fmdev *, u16 *); +int fm_rx_get_rssi_level(struct fmdev *, u16 *); +int fm_rx_get_rssi_threshold(struct fmdev *, short *); +int fm_rx_get_rfdepend_softmute(struct fmdev *, u8 *); +int fm_rx_get_deemph_mode(struct fmdev *, u16 *); +int fm_rx_get_af_switch(struct fmdev *, u8 *); +void fm_rx_get_region(struct fmdev *, u8 *); + +int fm_rx_set_chanl_spacing(struct fmdev *, u8); +int fm_rx_get_chanl_spacing(struct fmdev *, u8 *); +#endif + diff --git a/drivers/media/radio/wl128x/fmdrv_tx.c b/drivers/media/radio/wl128x/fmdrv_tx.c new file mode 100644 index 0000000..6ea33e0 --- /dev/null +++ b/drivers/media/radio/wl128x/fmdrv_tx.c @@ -0,0 +1,426 @@ +/* + * FM Driver for Connectivity chip of Texas Instruments. + * This sub-module of FM driver implements FM TX functionality. + * + * Copyright (C) 2011 Texas Instruments + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include <linux/delay.h> +#include "fmdrv.h" +#include "fmdrv_common.h" +#include "fmdrv_tx.h" + +int fm_tx_set_stereo_mono(struct fmdev *fmdev, u16 mode) +{ + u16 payload; + int ret; + + if (fmdev->tx_data.aud_mode == mode) + return 0; + + fmdbg("stereo mode: %d\n", mode); + + /* Set Stereo/Mono mode */ + payload = (1 - mode); + ret = fmc_send_cmd(fmdev, MONO_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + fmdev->tx_data.aud_mode = mode; + + return ret; +} + +static int set_rds_text(struct fmdev *fmdev, u8 *rds_text) +{ + u16 payload; + int ret; + + ret = fmc_send_cmd(fmdev, RDS_DATA_SET, REG_WR, rds_text, + strlen(rds_text), NULL, NULL); + if (ret < 0) + return ret; + + /* Scroll mode */ + payload = (u16)0x1; + ret = fmc_send_cmd(fmdev, DISPLAY_MODE, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + return 0; +} + +static int set_rds_data_mode(struct fmdev *fmdev, u8 mode) +{ + u16 payload; + int ret; + + /* Setting unique PI TODO: how unique? */ + payload = (u16)0xcafe; + ret = fmc_send_cmd(fmdev, PI_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + /* Set decoder id */ + payload = (u16)0xa; + ret = fmc_send_cmd(fmdev, DI_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + /* TODO: RDS_MODE_GET? */ + return 0; +} + +static int set_rds_len(struct fmdev *fmdev, u8 type, u16 len) +{ + u16 payload; + int ret; + + len |= type << 8; + payload = len; + ret = fmc_send_cmd(fmdev, RDS_CONFIG_DATA_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + /* TODO: LENGTH_GET? */ + return 0; +} + +int fm_tx_set_rds_mode(struct fmdev *fmdev, u8 rds_en_dis) +{ + u16 payload; + int ret; + u8 rds_text[] = "Zoom2\n"; + + fmdbg("rds_en_dis:%d(E:%d, D:%d)\n", rds_en_dis, + FM_RDS_ENABLE, FM_RDS_DISABLE); + + if (rds_en_dis == FM_RDS_ENABLE) { + /* Set RDS length */ + set_rds_len(fmdev, 0, strlen(rds_text)); + + /* Set RDS text */ + set_rds_text(fmdev, rds_text); + + /* Set RDS mode */ + set_rds_data_mode(fmdev, 0x0); + } + + /* Send command to enable RDS */ + if (rds_en_dis == FM_RDS_ENABLE) + payload = 0x01; + else + payload = 0x00; + + ret = fmc_send_cmd(fmdev, RDS_DATA_ENB, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + if (rds_en_dis == FM_RDS_ENABLE) { + /* Set RDS length */ + set_rds_len(fmdev, 0, strlen(rds_text)); + + /* Set RDS text */ + set_rds_text(fmdev, rds_text); + } + fmdev->tx_data.rds.flag = rds_en_dis; + + return 0; +} + +int fm_tx_set_radio_text(struct fmdev *fmdev, u8 *rds_text, u8 rds_type) +{ + u16 payload; + int ret; + + if (fmdev->curr_fmmode != FM_MODE_TX) + return -EPERM; + + fm_tx_set_rds_mode(fmdev, 0); + + /* Set RDS length */ + set_rds_len(fmdev, rds_type, strlen(rds_text)); + + /* Set RDS text */ + set_rds_text(fmdev, rds_text); + + /* Set RDS mode */ + set_rds_data_mode(fmdev, 0x0); + + payload = 1; + ret = fmc_send_cmd(fmdev, RDS_DATA_ENB, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + return 0; +} + +int fm_tx_set_af(struct fmdev *fmdev, u32 af) +{ + u16 payload; + int ret; + + if (fmdev->curr_fmmode != FM_MODE_TX) + return -EPERM; + + fmdbg("AF: %d\n", af); + + af = (af - 87500) / 100; + payload = (u16)af; + ret = fmc_send_cmd(fmdev, TA_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + return 0; +} + +int fm_tx_set_region(struct fmdev *fmdev, u8 region) +{ + u16 payload; + int ret; + + if (region != FM_BAND_EUROPE_US && region != FM_BAND_JAPAN) { + fmerr("Invalid band\n"); + return -EINVAL; + } + + /* Send command to set the band */ + payload = (u16)region; + ret = fmc_send_cmd(fmdev, TX_BAND_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + return 0; +} + +int fm_tx_set_mute_mode(struct fmdev *fmdev, u8 mute_mode_toset) +{ + u16 payload; + int ret; + + fmdbg("tx: mute mode %d\n", mute_mode_toset); + + payload = mute_mode_toset; + ret = fmc_send_cmd(fmdev, MUTE, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + return 0; +} + +/* Set TX Audio I/O */ +static int set_audio_io(struct fmdev *fmdev) +{ + struct fmtx_data *tx = &fmdev->tx_data; + u16 payload; + int ret; + + /* Set Audio I/O Enable */ + payload = tx->audio_io; + ret = fmc_send_cmd(fmdev, AUDIO_IO_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + /* TODO: is audio set? */ + return 0; +} + +/* Start TX Transmission */ +static int enable_xmit(struct fmdev *fmdev, u8 new_xmit_state) +{ + struct fmtx_data *tx = &fmdev->tx_data; + unsigned long timeleft; + u16 payload; + int ret; + + /* Enable POWER_ENB interrupts */ + payload = FM_POW_ENB_EVENT; + ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + /* Set Power Enable */ + payload = new_xmit_state; + ret = fmc_send_cmd(fmdev, POWER_ENB_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + /* Wait for Power Enabled */ + init_completion(&fmdev->maintask_comp); + timeleft = wait_for_completion_timeout(&fmdev->maintask_comp, + FM_DRV_TX_TIMEOUT); + if (!timeleft) { + fmerr("Timeout(%d sec),didn't get tune ended interrupt\n", + jiffies_to_msecs(FM_DRV_TX_TIMEOUT) / 1000); + return -ETIMEDOUT; + } + + set_bit(FM_CORE_TX_XMITING, &fmdev->flag); + tx->xmit_state = new_xmit_state; + + return 0; +} + +/* Set TX power level */ +int fm_tx_set_pwr_lvl(struct fmdev *fmdev, u8 new_pwr_lvl) +{ + u16 payload; + struct fmtx_data *tx = &fmdev->tx_data; + int ret; + + if (fmdev->curr_fmmode != FM_MODE_TX) + return -EPERM; + fmdbg("tx: pwr_level_to_set %ld\n", (long int)new_pwr_lvl); + + /* If the core isn't ready update global variable */ + if (!test_bit(FM_CORE_READY, &fmdev->flag)) { + tx->pwr_lvl = new_pwr_lvl; + return 0; + } + + /* Set power level: Application will specify power level value in + * units of dB/uV, whereas range and step are specific to FM chip. + * For TI's WL chips, convert application specified power level value + * to chip specific value by subtracting 122 from it. Refer to TI FM + * data sheet for details. + * */ + + payload = (FM_PWR_LVL_HIGH - new_pwr_lvl); + ret = fmc_send_cmd(fmdev, POWER_LEV_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + /* TODO: is the power level set? */ + tx->pwr_lvl = new_pwr_lvl; + + return 0; +} + +/* + * Sets FM TX pre-emphasis filter value (OFF, 50us, or 75us) + * Convert V4L2 specified filter values to chip specific filter values. + */ +int fm_tx_set_preemph_filter(struct fmdev *fmdev, u32 preemphasis) +{ + struct fmtx_data *tx = &fmdev->tx_data; + u16 payload; + int ret; + + if (fmdev->curr_fmmode != FM_MODE_TX) + return -EPERM; + + switch (preemphasis) { + case V4L2_PREEMPHASIS_DISABLED: + payload = FM_TX_PREEMPH_OFF; + break; + case V4L2_PREEMPHASIS_50_uS: + payload = FM_TX_PREEMPH_50US; + break; + case V4L2_PREEMPHASIS_75_uS: + payload = FM_TX_PREEMPH_75US; + break; + } + + ret = fmc_send_cmd(fmdev, PREMPH_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + tx->preemph = payload; + + return ret; +} + +/* Get the TX tuning capacitor value.*/ +int fm_tx_get_tune_cap_val(struct fmdev *fmdev) +{ + u16 curr_val; + u32 resp_len; + int ret; + + if (fmdev->curr_fmmode != FM_MODE_TX) + return -EPERM; + + ret = fmc_send_cmd(fmdev, READ_FMANT_TUNE_VALUE, REG_RD, + NULL, sizeof(curr_val), &curr_val, &resp_len); + if (ret < 0) + return ret; + + curr_val = be16_to_cpu(curr_val); + + return curr_val; +} + +/* Set TX Frequency */ +int fm_tx_set_freq(struct fmdev *fmdev, u32 freq_to_set) +{ + struct fmtx_data *tx = &fmdev->tx_data; + u16 payload, chanl_index; + int ret; + + if (test_bit(FM_CORE_TX_XMITING, &fmdev->flag)) { + enable_xmit(fmdev, 0); + clear_bit(FM_CORE_TX_XMITING, &fmdev->flag); + } + + /* Enable FR, BL interrupts */ + payload = (FM_FR_EVENT | FM_BL_EVENT); + ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + tx->tx_frq = (unsigned long)freq_to_set; + fmdbg("tx: freq_to_set %ld\n", (long int)tx->tx_frq); + + chanl_index = freq_to_set / 10; + + /* Set current tuner channel */ + payload = chanl_index; + ret = fmc_send_cmd(fmdev, CHANL_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + fm_tx_set_pwr_lvl(fmdev, tx->pwr_lvl); + fm_tx_set_preemph_filter(fmdev, tx->preemph); + + tx->audio_io = 0x01; /* I2S */ + set_audio_io(fmdev); + + enable_xmit(fmdev, 0x01); /* Enable transmission */ + + tx->aud_mode = FM_STEREO_MODE; + tx->rds.flag = FM_RDS_DISABLE; + + return 0; +} + diff --git a/drivers/media/radio/wl128x/fmdrv_tx.h b/drivers/media/radio/wl128x/fmdrv_tx.h new file mode 100644 index 0000000..11ae2e4 --- /dev/null +++ b/drivers/media/radio/wl128x/fmdrv_tx.h @@ -0,0 +1,37 @@ +/* + * FM Driver for Connectivity chip of Texas Instruments. + * FM TX module header. + * + * Copyright (C) 2011 Texas Instruments + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#ifndef _FMDRV_TX_H +#define _FMDRV_TX_H + +int fm_tx_set_freq(struct fmdev *, u32); +int fm_tx_set_pwr_lvl(struct fmdev *, u8); +int fm_tx_set_region(struct fmdev *, u8); +int fm_tx_set_mute_mode(struct fmdev *, u8); +int fm_tx_set_stereo_mono(struct fmdev *, u16); +int fm_tx_set_rds_mode(struct fmdev *, u8); +int fm_tx_set_radio_text(struct fmdev *, u8 *, u8); +int fm_tx_set_af(struct fmdev *, u32); +int fm_tx_set_preemph_filter(struct fmdev *, u32); +int fm_tx_get_tune_cap_val(struct fmdev *); + +#endif + diff --git a/drivers/media/radio/wl128x/fmdrv_v4l2.c b/drivers/media/radio/wl128x/fmdrv_v4l2.c new file mode 100644 index 0000000..5dec323 --- /dev/null +++ b/drivers/media/radio/wl128x/fmdrv_v4l2.c @@ -0,0 +1,615 @@ +/* + * FM Driver for Connectivity chip of Texas Instruments. + * This file provides interfaces to V4L2 subsystem. + * + * This module registers with V4L2 subsystem as Radio + * data system interface (/dev/radio). During the registration, + * it will expose two set of function pointers. + * + * 1) File operation related API (open, close, read, write, poll...etc). + * 2) Set of V4L2 IOCTL complaint API. + * + * Copyright (C) 2011 Texas Instruments + * Author: Raja Mani <raja_mani@ti.com> + * Author: Manjunatha Halli <manjunatha_halli@ti.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include <linux/export.h> + +#include "fmdrv.h" +#include "fmdrv_v4l2.h" +#include "fmdrv_common.h" +#include "fmdrv_rx.h" +#include "fmdrv_tx.h" + +static struct video_device *gradio_dev; +static u8 radio_disconnected; + +/* -- V4L2 RADIO (/dev/radioX) device file operation interfaces --- */ + +/* Read RX RDS data */ +static ssize_t fm_v4l2_fops_read(struct file *file, char __user * buf, + size_t count, loff_t *ppos) +{ + u8 rds_mode; + int ret; + struct fmdev *fmdev; + + fmdev = video_drvdata(file); + + if (!radio_disconnected) { + fmerr("FM device is already disconnected\n"); + return -EIO; + } + + if (mutex_lock_interruptible(&fmdev->mutex)) + return -ERESTARTSYS; + + /* Turn on RDS mode if it is disabled */ + ret = fm_rx_get_rds_mode(fmdev, &rds_mode); + if (ret < 0) { + fmerr("Unable to read current rds mode\n"); + goto read_unlock; + } + + if (rds_mode == FM_RDS_DISABLE) { + ret = fmc_set_rds_mode(fmdev, FM_RDS_ENABLE); + if (ret < 0) { + fmerr("Failed to enable rds mode\n"); + goto read_unlock; + } + } + + /* Copy RDS data from internal buffer to user buffer */ + ret = fmc_transfer_rds_from_internal_buff(fmdev, file, buf, count); +read_unlock: + mutex_unlock(&fmdev->mutex); + return ret; +} + +/* Write TX RDS data */ +static ssize_t fm_v4l2_fops_write(struct file *file, const char __user * buf, + size_t count, loff_t *ppos) +{ + struct tx_rds rds; + int ret; + struct fmdev *fmdev; + + ret = copy_from_user(&rds, buf, sizeof(rds)); + rds.text[sizeof(rds.text) - 1] = '\0'; + fmdbg("(%d)type: %d, text %s, af %d\n", + ret, rds.text_type, rds.text, rds.af_freq); + if (ret) + return -EFAULT; + + fmdev = video_drvdata(file); + if (mutex_lock_interruptible(&fmdev->mutex)) + return -ERESTARTSYS; + fm_tx_set_radio_text(fmdev, rds.text, rds.text_type); + fm_tx_set_af(fmdev, rds.af_freq); + mutex_unlock(&fmdev->mutex); + + return sizeof(rds); +} + +static u32 fm_v4l2_fops_poll(struct file *file, struct poll_table_struct *pts) +{ + int ret; + struct fmdev *fmdev; + + fmdev = video_drvdata(file); + mutex_lock(&fmdev->mutex); + ret = fmc_is_rds_data_available(fmdev, file, pts); + mutex_unlock(&fmdev->mutex); + if (ret < 0) + return POLLIN | POLLRDNORM; + + return 0; +} + +/* + * Handle open request for "/dev/radioX" device. + * Start with FM RX mode as default. + */ +static int fm_v4l2_fops_open(struct file *file) +{ + int ret; + struct fmdev *fmdev = NULL; + + /* Don't allow multiple open */ + if (radio_disconnected) { + fmerr("FM device is already opened\n"); + return -EBUSY; + } + + fmdev = video_drvdata(file); + + if (mutex_lock_interruptible(&fmdev->mutex)) + return -ERESTARTSYS; + ret = fmc_prepare(fmdev); + if (ret < 0) { + fmerr("Unable to prepare FM CORE\n"); + goto open_unlock; + } + + fmdbg("Load FM RX firmware..\n"); + + ret = fmc_set_mode(fmdev, FM_MODE_RX); + if (ret < 0) { + fmerr("Unable to load FM RX firmware\n"); + goto open_unlock; + } + radio_disconnected = 1; + +open_unlock: + mutex_unlock(&fmdev->mutex); + return ret; +} + +static int fm_v4l2_fops_release(struct file *file) +{ + int ret; + struct fmdev *fmdev; + + fmdev = video_drvdata(file); + if (!radio_disconnected) { + fmdbg("FM device is already closed\n"); + return 0; + } + + mutex_lock(&fmdev->mutex); + ret = fmc_set_mode(fmdev, FM_MODE_OFF); + if (ret < 0) { + fmerr("Unable to turn off the chip\n"); + goto release_unlock; + } + + ret = fmc_release(fmdev); + if (ret < 0) { + fmerr("FM CORE release failed\n"); + goto release_unlock; + } + radio_disconnected = 0; + +release_unlock: + mutex_unlock(&fmdev->mutex); + return ret; +} + +/* V4L2 RADIO (/dev/radioX) device IOCTL interfaces */ +static int fm_v4l2_vidioc_querycap(struct file *file, void *priv, + struct v4l2_capability *capability) +{ + strlcpy(capability->driver, FM_DRV_NAME, sizeof(capability->driver)); + strlcpy(capability->card, FM_DRV_CARD_SHORT_NAME, + sizeof(capability->card)); + sprintf(capability->bus_info, "UART"); + capability->capabilities = V4L2_CAP_HW_FREQ_SEEK | V4L2_CAP_TUNER | + V4L2_CAP_RADIO | V4L2_CAP_MODULATOR | + V4L2_CAP_AUDIO | V4L2_CAP_READWRITE | + V4L2_CAP_RDS_CAPTURE; + + return 0; +} + +static int fm_g_volatile_ctrl(struct v4l2_ctrl *ctrl) +{ + struct fmdev *fmdev = container_of(ctrl->handler, + struct fmdev, ctrl_handler); + + switch (ctrl->id) { + case V4L2_CID_TUNE_ANTENNA_CAPACITOR: + ctrl->val = fm_tx_get_tune_cap_val(fmdev); + break; + default: + fmwarn("%s: Unknown IOCTL: %d\n", __func__, ctrl->id); + break; + } + + return 0; +} + +static int fm_v4l2_s_ctrl(struct v4l2_ctrl *ctrl) +{ + struct fmdev *fmdev = container_of(ctrl->handler, + struct fmdev, ctrl_handler); + + switch (ctrl->id) { + case V4L2_CID_AUDIO_VOLUME: /* set volume */ + return fm_rx_set_volume(fmdev, (u16)ctrl->val); + + case V4L2_CID_AUDIO_MUTE: /* set mute */ + return fmc_set_mute_mode(fmdev, (u8)ctrl->val); + + case V4L2_CID_TUNE_POWER_LEVEL: + /* set TX power level - ext control */ + return fm_tx_set_pwr_lvl(fmdev, (u8)ctrl->val); + + case V4L2_CID_TUNE_PREEMPHASIS: + return fm_tx_set_preemph_filter(fmdev, (u8) ctrl->val); + + default: + return -EINVAL; + } +} + +static int fm_v4l2_vidioc_g_audio(struct file *file, void *priv, + struct v4l2_audio *audio) +{ + memset(audio, 0, sizeof(*audio)); + strcpy(audio->name, "Radio"); + audio->capability = V4L2_AUDCAP_STEREO; + + return 0; +} + +static int fm_v4l2_vidioc_s_audio(struct file *file, void *priv, + const struct v4l2_audio *audio) +{ + if (audio->index != 0) + return -EINVAL; + + return 0; +} + +/* Get tuner attributes. If current mode is NOT RX, return error */ +static int fm_v4l2_vidioc_g_tuner(struct file *file, void *priv, + struct v4l2_tuner *tuner) +{ + struct fmdev *fmdev = video_drvdata(file); + u32 bottom_freq; + u32 top_freq; + u16 stereo_mono_mode; + u16 rssilvl; + int ret; + + if (tuner->index != 0) + return -EINVAL; + + if (fmdev->curr_fmmode != FM_MODE_RX) + return -EPERM; + + ret = fm_rx_get_band_freq_range(fmdev, &bottom_freq, &top_freq); + if (ret != 0) + return ret; + + ret = fm_rx_get_stereo_mono(fmdev, &stereo_mono_mode); + if (ret != 0) + return ret; + + ret = fm_rx_get_rssi_level(fmdev, &rssilvl); + if (ret != 0) + return ret; + + strcpy(tuner->name, "FM"); + tuner->type = V4L2_TUNER_RADIO; + /* Store rangelow and rangehigh freq in unit of 62.5 Hz */ + tuner->rangelow = bottom_freq * 16; + tuner->rangehigh = top_freq * 16; + tuner->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO | + ((fmdev->rx.rds.flag == FM_RDS_ENABLE) ? V4L2_TUNER_SUB_RDS : 0); + tuner->capability = V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS | + V4L2_TUNER_CAP_LOW | + V4L2_TUNER_CAP_HWSEEK_BOUNDED | + V4L2_TUNER_CAP_HWSEEK_WRAP; + tuner->audmode = (stereo_mono_mode ? + V4L2_TUNER_MODE_MONO : V4L2_TUNER_MODE_STEREO); + + /* + * Actual rssi value lies in between -128 to +127. + * Convert this range from 0 to 255 by adding +128 + */ + rssilvl += 128; + + /* + * Return signal strength value should be within 0 to 65535. + * Find out correct signal radio by multiplying (65535/255) = 257 + */ + tuner->signal = rssilvl * 257; + tuner->afc = 0; + + return ret; +} + +/* + * Set tuner attributes. If current mode is NOT RX, set to RX. + * Currently, we set only audio mode (mono/stereo) and RDS state (on/off). + * Should we set other tuner attributes, too? + */ +static int fm_v4l2_vidioc_s_tuner(struct file *file, void *priv, + const struct v4l2_tuner *tuner) +{ + struct fmdev *fmdev = video_drvdata(file); + u16 aud_mode; + u8 rds_mode; + int ret; + + if (tuner->index != 0) + return -EINVAL; + + aud_mode = (tuner->audmode == V4L2_TUNER_MODE_STEREO) ? + FM_STEREO_MODE : FM_MONO_MODE; + rds_mode = (tuner->rxsubchans & V4L2_TUNER_SUB_RDS) ? + FM_RDS_ENABLE : FM_RDS_DISABLE; + + if (fmdev->curr_fmmode != FM_MODE_RX) { + ret = fmc_set_mode(fmdev, FM_MODE_RX); + if (ret < 0) { + fmerr("Failed to set RX mode\n"); + return ret; + } + } + + ret = fmc_set_stereo_mono(fmdev, aud_mode); + if (ret < 0) { + fmerr("Failed to set RX stereo/mono mode\n"); + return ret; + } + + ret = fmc_set_rds_mode(fmdev, rds_mode); + if (ret < 0) + fmerr("Failed to set RX RDS mode\n"); + + return ret; +} + +/* Get tuner or modulator radio frequency */ +static int fm_v4l2_vidioc_g_freq(struct file *file, void *priv, + struct v4l2_frequency *freq) +{ + struct fmdev *fmdev = video_drvdata(file); + int ret; + + ret = fmc_get_freq(fmdev, &freq->frequency); + if (ret < 0) { + fmerr("Failed to get frequency\n"); + return ret; + } + + /* Frequency unit of 62.5 Hz*/ + freq->frequency = (u32) freq->frequency * 16; + + return 0; +} + +/* Set tuner or modulator radio frequency */ +static int fm_v4l2_vidioc_s_freq(struct file *file, void *priv, + const struct v4l2_frequency *freq) +{ + struct fmdev *fmdev = video_drvdata(file); + + /* + * As V4L2_TUNER_CAP_LOW is set 1 user sends the frequency + * in units of 62.5 Hz. + */ + return fmc_set_freq(fmdev, freq->frequency / 16); +} + +/* Set hardware frequency seek. If current mode is NOT RX, set it RX. */ +static int fm_v4l2_vidioc_s_hw_freq_seek(struct file *file, void *priv, + const struct v4l2_hw_freq_seek *seek) +{ + struct fmdev *fmdev = video_drvdata(file); + int ret; + + if (file->f_flags & O_NONBLOCK) + return -EWOULDBLOCK; + + if (fmdev->curr_fmmode != FM_MODE_RX) { + ret = fmc_set_mode(fmdev, FM_MODE_RX); + if (ret != 0) { + fmerr("Failed to set RX mode\n"); + return ret; + } + } + + ret = fm_rx_seek(fmdev, seek->seek_upward, seek->wrap_around, + seek->spacing); + if (ret < 0) + fmerr("RX seek failed - %d\n", ret); + + return ret; +} +/* Get modulator attributes. If mode is not TX, return no attributes. */ +static int fm_v4l2_vidioc_g_modulator(struct file *file, void *priv, + struct v4l2_modulator *mod) +{ + struct fmdev *fmdev = video_drvdata(file); + + if (mod->index != 0) + return -EINVAL; + + if (fmdev->curr_fmmode != FM_MODE_TX) + return -EPERM; + + mod->txsubchans = ((fmdev->tx_data.aud_mode == FM_STEREO_MODE) ? + V4L2_TUNER_SUB_STEREO : V4L2_TUNER_SUB_MONO) | + ((fmdev->tx_data.rds.flag == FM_RDS_ENABLE) ? + V4L2_TUNER_SUB_RDS : 0); + + mod->capability = V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS | + V4L2_TUNER_CAP_LOW; + + return 0; +} + +/* Set modulator attributes. If mode is not TX, set to TX. */ +static int fm_v4l2_vidioc_s_modulator(struct file *file, void *priv, + const struct v4l2_modulator *mod) +{ + struct fmdev *fmdev = video_drvdata(file); + u8 rds_mode; + u16 aud_mode; + int ret; + + if (mod->index != 0) + return -EINVAL; + + if (fmdev->curr_fmmode != FM_MODE_TX) { + ret = fmc_set_mode(fmdev, FM_MODE_TX); + if (ret != 0) { + fmerr("Failed to set TX mode\n"); + return ret; + } + } + + aud_mode = (mod->txsubchans & V4L2_TUNER_SUB_STEREO) ? + FM_STEREO_MODE : FM_MONO_MODE; + rds_mode = (mod->txsubchans & V4L2_TUNER_SUB_RDS) ? + FM_RDS_ENABLE : FM_RDS_DISABLE; + ret = fm_tx_set_stereo_mono(fmdev, aud_mode); + if (ret < 0) { + fmerr("Failed to set mono/stereo mode for TX\n"); + return ret; + } + ret = fm_tx_set_rds_mode(fmdev, rds_mode); + if (ret < 0) + fmerr("Failed to set rds mode for TX\n"); + + return ret; +} + +static const struct v4l2_file_operations fm_drv_fops = { + .owner = THIS_MODULE, + .read = fm_v4l2_fops_read, + .write = fm_v4l2_fops_write, + .poll = fm_v4l2_fops_poll, + .unlocked_ioctl = video_ioctl2, + .open = fm_v4l2_fops_open, + .release = fm_v4l2_fops_release, +}; + +static const struct v4l2_ctrl_ops fm_ctrl_ops = { + .s_ctrl = fm_v4l2_s_ctrl, + .g_volatile_ctrl = fm_g_volatile_ctrl, +}; +static const struct v4l2_ioctl_ops fm_drv_ioctl_ops = { + .vidioc_querycap = fm_v4l2_vidioc_querycap, + .vidioc_g_audio = fm_v4l2_vidioc_g_audio, + .vidioc_s_audio = fm_v4l2_vidioc_s_audio, + .vidioc_g_tuner = fm_v4l2_vidioc_g_tuner, + .vidioc_s_tuner = fm_v4l2_vidioc_s_tuner, + .vidioc_g_frequency = fm_v4l2_vidioc_g_freq, + .vidioc_s_frequency = fm_v4l2_vidioc_s_freq, + .vidioc_s_hw_freq_seek = fm_v4l2_vidioc_s_hw_freq_seek, + .vidioc_g_modulator = fm_v4l2_vidioc_g_modulator, + .vidioc_s_modulator = fm_v4l2_vidioc_s_modulator +}; + +/* V4L2 RADIO device parent structure */ +static struct video_device fm_viddev_template = { + .fops = &fm_drv_fops, + .ioctl_ops = &fm_drv_ioctl_ops, + .name = FM_DRV_NAME, + .release = video_device_release, + /* + * To ensure both the tuner and modulator ioctls are accessible we + * set the vfl_dir to M2M to indicate this. + * + * It is not really a mem2mem device of course, but it can both receive + * and transmit using the same radio device. It's the only radio driver + * that does this and it should really be split in two radio devices, + * but that would affect applications using this driver. + */ + .vfl_dir = VFL_DIR_M2M, +}; + +int fm_v4l2_init_video_device(struct fmdev *fmdev, int radio_nr) +{ + struct v4l2_ctrl *ctrl; + int ret; + + /* Init mutex for core locking */ + mutex_init(&fmdev->mutex); + + /* Allocate new video device */ + gradio_dev = video_device_alloc(); + if (NULL == gradio_dev) { + fmerr("Can't allocate video device\n"); + return -ENOMEM; + } + + /* Setup FM driver's V4L2 properties */ + memcpy(gradio_dev, &fm_viddev_template, sizeof(fm_viddev_template)); + + video_set_drvdata(gradio_dev, fmdev); + + gradio_dev->lock = &fmdev->mutex; + + /* Register with V4L2 subsystem as RADIO device */ + if (video_register_device(gradio_dev, VFL_TYPE_RADIO, radio_nr)) { + video_device_release(gradio_dev); + fmerr("Could not register video device\n"); + return -ENOMEM; + } + + fmdev->radio_dev = gradio_dev; + + /* Register to v4l2 ctrl handler framework */ + fmdev->radio_dev->ctrl_handler = &fmdev->ctrl_handler; + + ret = v4l2_ctrl_handler_init(&fmdev->ctrl_handler, 5); + if (ret < 0) { + fmerr("(fmdev): Can't init ctrl handler\n"); + v4l2_ctrl_handler_free(&fmdev->ctrl_handler); + return -EBUSY; + } + + /* + * Following controls are handled by V4L2 control framework. + * Added in ascending ID order. + */ + v4l2_ctrl_new_std(&fmdev->ctrl_handler, &fm_ctrl_ops, + V4L2_CID_AUDIO_VOLUME, FM_RX_VOLUME_MIN, + FM_RX_VOLUME_MAX, 1, FM_RX_VOLUME_MAX); + + v4l2_ctrl_new_std(&fmdev->ctrl_handler, &fm_ctrl_ops, + V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1); + + v4l2_ctrl_new_std_menu(&fmdev->ctrl_handler, &fm_ctrl_ops, + V4L2_CID_TUNE_PREEMPHASIS, V4L2_PREEMPHASIS_75_uS, + 0, V4L2_PREEMPHASIS_75_uS); + + v4l2_ctrl_new_std(&fmdev->ctrl_handler, &fm_ctrl_ops, + V4L2_CID_TUNE_POWER_LEVEL, FM_PWR_LVL_LOW, + FM_PWR_LVL_HIGH, 1, FM_PWR_LVL_HIGH); + + ctrl = v4l2_ctrl_new_std(&fmdev->ctrl_handler, &fm_ctrl_ops, + V4L2_CID_TUNE_ANTENNA_CAPACITOR, 0, + 255, 1, 255); + + if (ctrl) + ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE; + + return 0; +} + +void *fm_v4l2_deinit_video_device(void) +{ + struct fmdev *fmdev; + + + fmdev = video_get_drvdata(gradio_dev); + + /* Unregister to v4l2 ctrl handler framework*/ + v4l2_ctrl_handler_free(&fmdev->ctrl_handler); + + /* Unregister RADIO device from V4L2 subsystem */ + video_unregister_device(gradio_dev); + + return fmdev; +} diff --git a/drivers/media/radio/wl128x/fmdrv_v4l2.h b/drivers/media/radio/wl128x/fmdrv_v4l2.h new file mode 100644 index 0000000..0ba79d7 --- /dev/null +++ b/drivers/media/radio/wl128x/fmdrv_v4l2.h @@ -0,0 +1,33 @@ +/* + * FM Driver for Connectivity chip of Texas Instruments. + * + * FM V4L2 module header. + * + * Copyright (C) 2011 Texas Instruments + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#ifndef _FMDRV_V4L2_H +#define _FMDRV_V4L2_H + +#include <media/v4l2-ioctl.h> +#include <media/v4l2-common.h> +#include <media/v4l2-ctrls.h> + +int fm_v4l2_init_video_device(struct fmdev *, int); +void *fm_v4l2_deinit_video_device(void); + +#endif |