diff options
Diffstat (limited to 'drivers/media/usb/usbvision/usbvision-video.c')
| -rw-r--r-- | drivers/media/usb/usbvision/usbvision-video.c | 1720 |
1 files changed, 1720 insertions, 0 deletions
diff --git a/drivers/media/usb/usbvision/usbvision-video.c b/drivers/media/usb/usbvision/usbvision-video.c new file mode 100644 index 0000000..c097168 --- /dev/null +++ b/drivers/media/usb/usbvision/usbvision-video.c @@ -0,0 +1,1720 @@ +/* + * USB USBVISION Video device driver 0.9.10 + * + * + * + * Copyright (c) 1999-2005 Joerg Heckenbach <joerg@heckenbach-aw.de> + * + * This module is part of usbvision driver project. + * + * 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., 675 Mass Ave, Cambridge, MA 02139, USA. + * + * Let's call the version 0.... until compression decoding is completely + * implemented. + * + * This driver is written by Jose Ignacio Gijon and Joerg Heckenbach. + * It was based on USB CPiA driver written by Peter Pregler, + * Scott J. Bertin and Johannes Erdfelt + * Ideas are taken from bttv driver by Ralph Metzler, Marcus Metzler & + * Gerd Knorr and zoran 36120/36125 driver by Pauline Middelink + * Updates to driver completed by Dwaine P. Garden + * + * + * TODO: + * - use submit_urb for all setup packets + * - Fix memory settings for nt1004. It is 4 times as big as the + * nt1003 memory. + * - Add audio on endpoint 3 for nt1004 chip. + * Seems impossible, needs a codec interface. Which one? + * - Clean up the driver. + * - optimization for performance. + * - Add Videotext capability (VBI). Working on it..... + * - Check audio for other devices + * + */ + +#include <linux/kernel.h> +#include <linux/list.h> +#include <linux/timer.h> +#include <linux/slab.h> +#include <linux/mm.h> +#include <linux/highmem.h> +#include <linux/vmalloc.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/spinlock.h> +#include <linux/io.h> +#include <linux/videodev2.h> +#include <linux/i2c.h> + +#include <media/saa7115.h> +#include <media/v4l2-common.h> +#include <media/v4l2-ioctl.h> +#include <media/tuner.h> + +#include <linux/workqueue.h> + +#include "usbvision.h" +#include "usbvision-cards.h" + +#define DRIVER_AUTHOR \ + "Joerg Heckenbach <joerg@heckenbach-aw.de>, " \ + "Dwaine Garden <DwaineGarden@rogers.com>" +#define DRIVER_NAME "usbvision" +#define DRIVER_ALIAS "USBVision" +#define DRIVER_DESC "USBVision USB Video Device Driver for Linux" +#define DRIVER_LICENSE "GPL" +#define USBVISION_VERSION_STRING "0.9.11" + +#define ENABLE_HEXDUMP 0 /* Enable if you need it */ + + +#ifdef USBVISION_DEBUG + #define PDEBUG(level, fmt, args...) { \ + if (video_debug & (level)) \ + printk(KERN_INFO KBUILD_MODNAME ":[%s:%d] " fmt, \ + __func__, __LINE__ , ## args); \ + } +#else + #define PDEBUG(level, fmt, args...) do {} while (0) +#endif + +#define DBG_IO (1 << 1) +#define DBG_PROBE (1 << 2) +#define DBG_MMAP (1 << 3) + +/* String operations */ +#define rmspace(str) while (*str == ' ') str++; +#define goto2next(str) while (*str != ' ') str++; while (*str == ' ') str++; + + +/* sequential number of usbvision device */ +static int usbvision_nr; + +static struct usbvision_v4l2_format_st usbvision_v4l2_format[] = { + { 1, 1, 8, V4L2_PIX_FMT_GREY , "GREY" }, + { 1, 2, 16, V4L2_PIX_FMT_RGB565 , "RGB565" }, + { 1, 3, 24, V4L2_PIX_FMT_RGB24 , "RGB24" }, + { 1, 4, 32, V4L2_PIX_FMT_RGB32 , "RGB32" }, + { 1, 2, 16, V4L2_PIX_FMT_RGB555 , "RGB555" }, + { 1, 2, 16, V4L2_PIX_FMT_YUYV , "YUV422" }, + { 1, 2, 12, V4L2_PIX_FMT_YVU420 , "YUV420P" }, /* 1.5 ! */ + { 1, 2, 16, V4L2_PIX_FMT_YUV422P , "YUV422P" } +}; + +/* Function prototypes */ +static void usbvision_release(struct usb_usbvision *usbvision); + +/* Default initialization of device driver parameters */ +/* Set the default format for ISOC endpoint */ +static int isoc_mode = ISOC_MODE_COMPRESS; +/* Set the default Debug Mode of the device driver */ +static int video_debug; +/* Set the default device to power on at startup */ +static int power_on_at_open = 1; +/* Sequential Number of Video Device */ +static int video_nr = -1; +/* Sequential Number of Radio Device */ +static int radio_nr = -1; + +/* Grab parameters for the device driver */ + +/* Showing parameters under SYSFS */ +module_param(isoc_mode, int, 0444); +module_param(video_debug, int, 0444); +module_param(power_on_at_open, int, 0444); +module_param(video_nr, int, 0444); +module_param(radio_nr, int, 0444); + +MODULE_PARM_DESC(isoc_mode, " Set the default format for ISOC endpoint. Default: 0x60 (Compression On)"); +MODULE_PARM_DESC(video_debug, " Set the default Debug Mode of the device driver. Default: 0 (Off)"); +MODULE_PARM_DESC(power_on_at_open, " Set the default device to power on when device is opened. Default: 1 (On)"); +MODULE_PARM_DESC(video_nr, "Set video device number (/dev/videoX). Default: -1 (autodetect)"); +MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX). Default: -1 (autodetect)"); + + +/* Misc stuff */ +MODULE_AUTHOR(DRIVER_AUTHOR); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_LICENSE(DRIVER_LICENSE); +MODULE_VERSION(USBVISION_VERSION_STRING); +MODULE_ALIAS(DRIVER_ALIAS); + + +/*****************************************************************************/ +/* SYSFS Code - Copied from the stv680.c usb module. */ +/* Device information is located at /sys/class/video4linux/video0 */ +/* Device parameters information is located at /sys/module/usbvision */ +/* Device USB Information is located at */ +/* /sys/bus/usb/drivers/USBVision Video Grabber */ +/*****************************************************************************/ + +#define YES_NO(x) ((x) ? "Yes" : "No") + +static inline struct usb_usbvision *cd_to_usbvision(struct device *cd) +{ + struct video_device *vdev = + container_of(cd, struct video_device, dev); + return video_get_drvdata(vdev); +} + +static ssize_t show_version(struct device *cd, + struct device_attribute *attr, char *buf) +{ + return sprintf(buf, "%s\n", USBVISION_VERSION_STRING); +} +static DEVICE_ATTR(version, S_IRUGO, show_version, NULL); + +static ssize_t show_model(struct device *cd, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = + container_of(cd, struct video_device, dev); + struct usb_usbvision *usbvision = video_get_drvdata(vdev); + return sprintf(buf, "%s\n", + usbvision_device_data[usbvision->dev_model].model_string); +} +static DEVICE_ATTR(model, S_IRUGO, show_model, NULL); + +static ssize_t show_hue(struct device *cd, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = + container_of(cd, struct video_device, dev); + struct usb_usbvision *usbvision = video_get_drvdata(vdev); + struct v4l2_control ctrl; + ctrl.id = V4L2_CID_HUE; + ctrl.value = 0; + if (usbvision->user) + call_all(usbvision, core, g_ctrl, &ctrl); + return sprintf(buf, "%d\n", ctrl.value); +} +static DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL); + +static ssize_t show_contrast(struct device *cd, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = + container_of(cd, struct video_device, dev); + struct usb_usbvision *usbvision = video_get_drvdata(vdev); + struct v4l2_control ctrl; + ctrl.id = V4L2_CID_CONTRAST; + ctrl.value = 0; + if (usbvision->user) + call_all(usbvision, core, g_ctrl, &ctrl); + return sprintf(buf, "%d\n", ctrl.value); +} +static DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL); + +static ssize_t show_brightness(struct device *cd, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = + container_of(cd, struct video_device, dev); + struct usb_usbvision *usbvision = video_get_drvdata(vdev); + struct v4l2_control ctrl; + ctrl.id = V4L2_CID_BRIGHTNESS; + ctrl.value = 0; + if (usbvision->user) + call_all(usbvision, core, g_ctrl, &ctrl); + return sprintf(buf, "%d\n", ctrl.value); +} +static DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL); + +static ssize_t show_saturation(struct device *cd, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = + container_of(cd, struct video_device, dev); + struct usb_usbvision *usbvision = video_get_drvdata(vdev); + struct v4l2_control ctrl; + ctrl.id = V4L2_CID_SATURATION; + ctrl.value = 0; + if (usbvision->user) + call_all(usbvision, core, g_ctrl, &ctrl); + return sprintf(buf, "%d\n", ctrl.value); +} +static DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL); + +static ssize_t show_streaming(struct device *cd, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = + container_of(cd, struct video_device, dev); + struct usb_usbvision *usbvision = video_get_drvdata(vdev); + return sprintf(buf, "%s\n", + YES_NO(usbvision->streaming == stream_on ? 1 : 0)); +} +static DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL); + +static ssize_t show_compression(struct device *cd, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = + container_of(cd, struct video_device, dev); + struct usb_usbvision *usbvision = video_get_drvdata(vdev); + return sprintf(buf, "%s\n", + YES_NO(usbvision->isoc_mode == ISOC_MODE_COMPRESS)); +} +static DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL); + +static ssize_t show_device_bridge(struct device *cd, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = + container_of(cd, struct video_device, dev); + struct usb_usbvision *usbvision = video_get_drvdata(vdev); + return sprintf(buf, "%d\n", usbvision->bridge_type); +} +static DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL); + +static void usbvision_create_sysfs(struct video_device *vdev) +{ + int res; + + if (!vdev) + return; + do { + res = device_create_file(&vdev->dev, &dev_attr_version); + if (res < 0) + break; + res = device_create_file(&vdev->dev, &dev_attr_model); + if (res < 0) + break; + res = device_create_file(&vdev->dev, &dev_attr_hue); + if (res < 0) + break; + res = device_create_file(&vdev->dev, &dev_attr_contrast); + if (res < 0) + break; + res = device_create_file(&vdev->dev, &dev_attr_brightness); + if (res < 0) + break; + res = device_create_file(&vdev->dev, &dev_attr_saturation); + if (res < 0) + break; + res = device_create_file(&vdev->dev, &dev_attr_streaming); + if (res < 0) + break; + res = device_create_file(&vdev->dev, &dev_attr_compression); + if (res < 0) + break; + res = device_create_file(&vdev->dev, &dev_attr_bridge); + if (res >= 0) + return; + } while (0); + + dev_err(&vdev->dev, "%s error: %d\n", __func__, res); +} + +static void usbvision_remove_sysfs(struct video_device *vdev) +{ + if (vdev) { + device_remove_file(&vdev->dev, &dev_attr_version); + device_remove_file(&vdev->dev, &dev_attr_model); + device_remove_file(&vdev->dev, &dev_attr_hue); + device_remove_file(&vdev->dev, &dev_attr_contrast); + device_remove_file(&vdev->dev, &dev_attr_brightness); + device_remove_file(&vdev->dev, &dev_attr_saturation); + device_remove_file(&vdev->dev, &dev_attr_streaming); + device_remove_file(&vdev->dev, &dev_attr_compression); + device_remove_file(&vdev->dev, &dev_attr_bridge); + } +} + +/* + * usbvision_open() + * + * This is part of Video 4 Linux API. The driver can be opened by one + * client only (checks internal counter 'usbvision->user'). The procedure + * then allocates buffers needed for video processing. + * + */ +static int usbvision_v4l2_open(struct file *file) +{ + struct usb_usbvision *usbvision = video_drvdata(file); + int err_code = 0; + + PDEBUG(DBG_IO, "open"); + + if (mutex_lock_interruptible(&usbvision->v4l2_lock)) + return -ERESTARTSYS; + usbvision_reset_power_off_timer(usbvision); + + if (usbvision->user) + err_code = -EBUSY; + else { + /* Allocate memory for the scratch ring buffer */ + err_code = usbvision_scratch_alloc(usbvision); + if (isoc_mode == ISOC_MODE_COMPRESS) { + /* Allocate intermediate decompression buffers + only if needed */ + err_code = usbvision_decompress_alloc(usbvision); + } + if (err_code) { + /* Deallocate all buffers if trouble */ + usbvision_scratch_free(usbvision); + usbvision_decompress_free(usbvision); + } + } + + /* If so far no errors then we shall start the camera */ + if (!err_code) { + if (usbvision->power == 0) { + usbvision_power_on(usbvision); + usbvision_i2c_register(usbvision); + } + + /* Send init sequence only once, it's large! */ + if (!usbvision->initialized) { + int setup_ok = 0; + setup_ok = usbvision_setup(usbvision, isoc_mode); + if (setup_ok) + usbvision->initialized = 1; + else + err_code = -EBUSY; + } + + if (!err_code) { + usbvision_begin_streaming(usbvision); + err_code = usbvision_init_isoc(usbvision); + /* device must be initialized before isoc transfer */ + usbvision_muxsel(usbvision, 0); + usbvision->user++; + } else { + if (power_on_at_open) { + usbvision_i2c_unregister(usbvision); + usbvision_power_off(usbvision); + usbvision->initialized = 0; + } + } + } + + /* prepare queues */ + usbvision_empty_framequeues(usbvision); + mutex_unlock(&usbvision->v4l2_lock); + + PDEBUG(DBG_IO, "success"); + return err_code; +} + +/* + * usbvision_v4l2_close() + * + * This is part of Video 4 Linux API. The procedure + * stops streaming and deallocates all buffers that were earlier + * allocated in usbvision_v4l2_open(). + * + */ +static int usbvision_v4l2_close(struct file *file) +{ + struct usb_usbvision *usbvision = video_drvdata(file); + + PDEBUG(DBG_IO, "close"); + + mutex_lock(&usbvision->v4l2_lock); + usbvision_audio_off(usbvision); + usbvision_restart_isoc(usbvision); + usbvision_stop_isoc(usbvision); + + usbvision_decompress_free(usbvision); + usbvision_frames_free(usbvision); + usbvision_empty_framequeues(usbvision); + usbvision_scratch_free(usbvision); + + usbvision->user--; + + if (power_on_at_open) { + /* power off in a little while + to avoid off/on every close/open short sequences */ + usbvision_set_power_off_timer(usbvision); + usbvision->initialized = 0; + } + + if (usbvision->remove_pending) { + printk(KERN_INFO "%s: Final disconnect\n", __func__); + usbvision_release(usbvision); + } + mutex_unlock(&usbvision->v4l2_lock); + + PDEBUG(DBG_IO, "success"); + return 0; +} + + +/* + * usbvision_ioctl() + * + * This is part of Video 4 Linux API. The procedure handles ioctl() calls. + * + */ +#ifdef CPTCFG_VIDEO_ADV_DEBUG +static int vidioc_g_register(struct file *file, void *priv, + struct v4l2_dbg_register *reg) +{ + struct usb_usbvision *usbvision = video_drvdata(file); + int err_code; + + if (!v4l2_chip_match_host(®->match)) + return -EINVAL; + /* NT100x has a 8-bit register space */ + err_code = usbvision_read_reg(usbvision, reg->reg&0xff); + if (err_code < 0) { + dev_err(&usbvision->vdev->dev, + "%s: VIDIOC_DBG_G_REGISTER failed: error %d\n", + __func__, err_code); + return err_code; + } + reg->val = err_code; + reg->size = 1; + return 0; +} + +static int vidioc_s_register(struct file *file, void *priv, + const struct v4l2_dbg_register *reg) +{ + struct usb_usbvision *usbvision = video_drvdata(file); + int err_code; + + if (!v4l2_chip_match_host(®->match)) + return -EINVAL; + /* NT100x has a 8-bit register space */ + err_code = usbvision_write_reg(usbvision, reg->reg & 0xff, reg->val); + if (err_code < 0) { + dev_err(&usbvision->vdev->dev, + "%s: VIDIOC_DBG_S_REGISTER failed: error %d\n", + __func__, err_code); + return err_code; + } + return 0; +} +#endif + +static int vidioc_querycap(struct file *file, void *priv, + struct v4l2_capability *vc) +{ + struct usb_usbvision *usbvision = video_drvdata(file); + + strlcpy(vc->driver, "USBVision", sizeof(vc->driver)); + strlcpy(vc->card, + usbvision_device_data[usbvision->dev_model].model_string, + sizeof(vc->card)); + usb_make_path(usbvision->dev, vc->bus_info, sizeof(vc->bus_info)); + vc->capabilities = V4L2_CAP_VIDEO_CAPTURE | + V4L2_CAP_AUDIO | + V4L2_CAP_READWRITE | + V4L2_CAP_STREAMING | + (usbvision->have_tuner ? V4L2_CAP_TUNER : 0); + return 0; +} + +static int vidioc_enum_input(struct file *file, void *priv, + struct v4l2_input *vi) +{ + struct usb_usbvision *usbvision = video_drvdata(file); + int chan; + + if (vi->index >= usbvision->video_inputs) + return -EINVAL; + if (usbvision->have_tuner) + chan = vi->index; + else + chan = vi->index + 1; /* skip Television string*/ + + /* Determine the requested input characteristics + specific for each usbvision card model */ + switch (chan) { + case 0: + if (usbvision_device_data[usbvision->dev_model].video_channels == 4) { + strcpy(vi->name, "White Video Input"); + } else { + strcpy(vi->name, "Television"); + vi->type = V4L2_INPUT_TYPE_TUNER; + vi->audioset = 1; + vi->tuner = chan; + vi->std = USBVISION_NORMS; + } + break; + case 1: + vi->type = V4L2_INPUT_TYPE_CAMERA; + if (usbvision_device_data[usbvision->dev_model].video_channels == 4) + strcpy(vi->name, "Green Video Input"); + else + strcpy(vi->name, "Composite Video Input"); + vi->std = V4L2_STD_PAL; + break; + case 2: + vi->type = V4L2_INPUT_TYPE_CAMERA; + if (usbvision_device_data[usbvision->dev_model].video_channels == 4) + strcpy(vi->name, "Yellow Video Input"); + else + strcpy(vi->name, "S-Video Input"); + vi->std = V4L2_STD_PAL; + break; + case 3: + vi->type = V4L2_INPUT_TYPE_CAMERA; + strcpy(vi->name, "Red Video Input"); + vi->std = V4L2_STD_PAL; + break; + } + return 0; +} + +static int vidioc_g_input(struct file *file, void *priv, unsigned int *input) +{ + struct usb_usbvision *usbvision = video_drvdata(file); + + *input = usbvision->ctl_input; + return 0; +} + +static int vidioc_s_input(struct file *file, void *priv, unsigned int input) +{ + struct usb_usbvision *usbvision = video_drvdata(file); + + if (input >= usbvision->video_inputs) + return -EINVAL; + + usbvision_muxsel(usbvision, input); + usbvision_set_input(usbvision); + usbvision_set_output(usbvision, + usbvision->curwidth, + usbvision->curheight); + return 0; +} + +static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id id) +{ + struct usb_usbvision *usbvision = video_drvdata(file); + + usbvision->tvnorm_id = id; + + call_all(usbvision, core, s_std, usbvision->tvnorm_id); + /* propagate the change to the decoder */ + usbvision_muxsel(usbvision, usbvision->ctl_input); + + return 0; +} + +static int vidioc_g_tuner(struct file *file, void *priv, + struct v4l2_tuner *vt) +{ + struct usb_usbvision *usbvision = video_drvdata(file); + + if (!usbvision->have_tuner || vt->index) /* Only tuner 0 */ + return -EINVAL; + if (usbvision->radio) { + strcpy(vt->name, "Radio"); + vt->type = V4L2_TUNER_RADIO; + } else { + strcpy(vt->name, "Television"); + } + /* Let clients fill in the remainder of this struct */ + call_all(usbvision, tuner, g_tuner, vt); + + return 0; +} + +static int vidioc_s_tuner(struct file *file, void *priv, + const struct v4l2_tuner *vt) +{ + struct usb_usbvision *usbvision = video_drvdata(file); + + /* Only no or one tuner for now */ + if (!usbvision->have_tuner || vt->index) + return -EINVAL; + /* let clients handle this */ + call_all(usbvision, tuner, s_tuner, vt); + + return 0; +} + +static int vidioc_g_frequency(struct file *file, void *priv, + struct v4l2_frequency *freq) +{ + struct usb_usbvision *usbvision = video_drvdata(file); + + freq->tuner = 0; /* Only one tuner */ + if (usbvision->radio) + freq->type = V4L2_TUNER_RADIO; + else + freq->type = V4L2_TUNER_ANALOG_TV; + freq->frequency = usbvision->freq; + + return 0; +} + +static int vidioc_s_frequency(struct file *file, void *priv, + const struct v4l2_frequency *freq) +{ + struct usb_usbvision *usbvision = video_drvdata(file); + + /* Only no or one tuner for now */ + if (!usbvision->have_tuner || freq->tuner) + return -EINVAL; + + usbvision->freq = freq->frequency; + call_all(usbvision, tuner, s_frequency, freq); + + return 0; +} + +static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a) +{ + struct usb_usbvision *usbvision = video_drvdata(file); + + if (usbvision->radio) + strcpy(a->name, "Radio"); + else + strcpy(a->name, "TV"); + + return 0; +} + +static int vidioc_s_audio(struct file *file, void *fh, + const struct v4l2_audio *a) +{ + if (a->index) + return -EINVAL; + return 0; +} + +static int vidioc_queryctrl(struct file *file, void *priv, + struct v4l2_queryctrl *ctrl) +{ + struct usb_usbvision *usbvision = video_drvdata(file); + + call_all(usbvision, core, queryctrl, ctrl); + + if (!ctrl->type) + return -EINVAL; + + return 0; +} + +static int vidioc_g_ctrl(struct file *file, void *priv, + struct v4l2_control *ctrl) +{ + struct usb_usbvision *usbvision = video_drvdata(file); + + call_all(usbvision, core, g_ctrl, ctrl); + return 0; +} + +static int vidioc_s_ctrl(struct file *file, void *priv, + struct v4l2_control *ctrl) +{ + struct usb_usbvision *usbvision = video_drvdata(file); + + call_all(usbvision, core, s_ctrl, ctrl); + return 0; +} + +static int vidioc_reqbufs(struct file *file, + void *priv, struct v4l2_requestbuffers *vr) +{ + struct usb_usbvision *usbvision = video_drvdata(file); + int ret; + + RESTRICT_TO_RANGE(vr->count, 1, USBVISION_NUMFRAMES); + + /* Check input validity: + the user must do a VIDEO CAPTURE and MMAP method. */ + if (vr->memory != V4L2_MEMORY_MMAP) + return -EINVAL; + + if (usbvision->streaming == stream_on) { + ret = usbvision_stream_interrupt(usbvision); + if (ret) + return ret; + } + + usbvision_frames_free(usbvision); + usbvision_empty_framequeues(usbvision); + vr->count = usbvision_frames_alloc(usbvision, vr->count); + + usbvision->cur_frame = NULL; + + return 0; +} + +static int vidioc_querybuf(struct file *file, + void *priv, struct v4l2_buffer *vb) +{ + struct usb_usbvision *usbvision = video_drvdata(file); + struct usbvision_frame *frame; + + /* FIXME : must control + that buffers are mapped (VIDIOC_REQBUFS has been called) */ + if (vb->index >= usbvision->num_frames) + return -EINVAL; + /* Updating the corresponding frame state */ + vb->flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; + frame = &usbvision->frame[vb->index]; + if (frame->grabstate >= frame_state_ready) + vb->flags |= V4L2_BUF_FLAG_QUEUED; + if (frame->grabstate >= frame_state_done) + vb->flags |= V4L2_BUF_FLAG_DONE; + if (frame->grabstate == frame_state_unused) + vb->flags |= V4L2_BUF_FLAG_MAPPED; + vb->memory = V4L2_MEMORY_MMAP; + + vb->m.offset = vb->index * PAGE_ALIGN(usbvision->max_frame_size); + + vb->memory = V4L2_MEMORY_MMAP; + vb->field = V4L2_FIELD_NONE; + vb->length = usbvision->curwidth * + usbvision->curheight * + usbvision->palette.bytes_per_pixel; + vb->timestamp = usbvision->frame[vb->index].timestamp; + vb->sequence = usbvision->frame[vb->index].sequence; + return 0; +} + +static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *vb) +{ + struct usb_usbvision *usbvision = video_drvdata(file); + struct usbvision_frame *frame; + unsigned long lock_flags; + + /* FIXME : works only on VIDEO_CAPTURE MODE, MMAP. */ + if (vb->index >= usbvision->num_frames) + return -EINVAL; + + frame = &usbvision->frame[vb->index]; + + if (frame->grabstate != frame_state_unused) + return -EAGAIN; + + /* Mark it as ready and enqueue frame */ + frame->grabstate = frame_state_ready; + frame->scanstate = scan_state_scanning; + frame->scanlength = 0; /* Accumulated in usbvision_parse_data() */ + + vb->flags &= ~V4L2_BUF_FLAG_DONE; + + /* set v4l2_format index */ + frame->v4l2_format = usbvision->palette; + + spin_lock_irqsave(&usbvision->queue_lock, lock_flags); + list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue); + spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags); + + return 0; +} + +static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *vb) +{ + struct usb_usbvision *usbvision = video_drvdata(file); + int ret; + struct usbvision_frame *f; + unsigned long lock_flags; + + if (list_empty(&(usbvision->outqueue))) { + if (usbvision->streaming == stream_idle) + return -EINVAL; + ret = wait_event_interruptible + (usbvision->wait_frame, + !list_empty(&(usbvision->outqueue))); + if (ret) + return ret; + } + + spin_lock_irqsave(&usbvision->queue_lock, lock_flags); + f = list_entry(usbvision->outqueue.next, + struct usbvision_frame, frame); + list_del(usbvision->outqueue.next); + spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags); + + f->grabstate = frame_state_unused; + + vb->memory = V4L2_MEMORY_MMAP; + vb->flags = V4L2_BUF_FLAG_MAPPED | + V4L2_BUF_FLAG_QUEUED | + V4L2_BUF_FLAG_DONE | + V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; + vb->index = f->index; + vb->sequence = f->sequence; + vb->timestamp = f->timestamp; + vb->field = V4L2_FIELD_NONE; + vb->bytesused = f->scanlength; + + return 0; +} + +static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i) +{ + struct usb_usbvision *usbvision = video_drvdata(file); + + usbvision->streaming = stream_on; + call_all(usbvision, video, s_stream, 1); + + return 0; +} + +static int vidioc_streamoff(struct file *file, + void *priv, enum v4l2_buf_type type) +{ + struct usb_usbvision *usbvision = video_drvdata(file); + + if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE) + return -EINVAL; + + if (usbvision->streaming == stream_on) { + usbvision_stream_interrupt(usbvision); + /* Stop all video streamings */ + call_all(usbvision, video, s_stream, 0); + } + usbvision_empty_framequeues(usbvision); + + return 0; +} + +static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, + struct v4l2_fmtdesc *vfd) +{ + if (vfd->index >= USBVISION_SUPPORTED_PALETTES - 1) + return -EINVAL; + strcpy(vfd->description, usbvision_v4l2_format[vfd->index].desc); + vfd->pixelformat = usbvision_v4l2_format[vfd->index].format; + return 0; +} + +static int vidioc_g_fmt_vid_cap(struct file *file, void *priv, + struct v4l2_format *vf) +{ + struct usb_usbvision *usbvision = video_drvdata(file); + vf->fmt.pix.width = usbvision->curwidth; + vf->fmt.pix.height = usbvision->curheight; + vf->fmt.pix.pixelformat = usbvision->palette.format; + vf->fmt.pix.bytesperline = + usbvision->curwidth * usbvision->palette.bytes_per_pixel; + vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline * usbvision->curheight; + vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; + vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */ + + return 0; +} + +static int vidioc_try_fmt_vid_cap(struct file *file, void *priv, + struct v4l2_format *vf) +{ + struct usb_usbvision *usbvision = video_drvdata(file); + int format_idx; + + /* Find requested format in available ones */ + for (format_idx = 0; format_idx < USBVISION_SUPPORTED_PALETTES; format_idx++) { + if (vf->fmt.pix.pixelformat == + usbvision_v4l2_format[format_idx].format) { + usbvision->palette = usbvision_v4l2_format[format_idx]; + break; + } + } + /* robustness */ + if (format_idx == USBVISION_SUPPORTED_PALETTES) + return -EINVAL; + RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH); + RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT); + + vf->fmt.pix.bytesperline = vf->fmt.pix.width* + usbvision->palette.bytes_per_pixel; + vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*vf->fmt.pix.height; + + return 0; +} + +static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, + struct v4l2_format *vf) +{ + struct usb_usbvision *usbvision = video_drvdata(file); + int ret; + + ret = vidioc_try_fmt_vid_cap(file, priv, vf); + if (ret) + return ret; + + /* stop io in case it is already in progress */ + if (usbvision->streaming == stream_on) { + ret = usbvision_stream_interrupt(usbvision); + if (ret) + return ret; + } + usbvision_frames_free(usbvision); + usbvision_empty_framequeues(usbvision); + + usbvision->cur_frame = NULL; + + /* by now we are committed to the new data... */ + usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height); + + return 0; +} + +static ssize_t usbvision_read(struct file *file, char __user *buf, + size_t count, loff_t *ppos) +{ + struct usb_usbvision *usbvision = video_drvdata(file); + int noblock = file->f_flags & O_NONBLOCK; + unsigned long lock_flags; + int ret, i; + struct usbvision_frame *frame; + + PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __func__, + (unsigned long)count, noblock); + + if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL)) + return -EFAULT; + + /* This entry point is compatible with the mmap routines + so that a user can do either VIDIOC_QBUF/VIDIOC_DQBUF + to get frames or call read on the device. */ + if (!usbvision->num_frames) { + /* First, allocate some frames to work with + if this has not been done with VIDIOC_REQBUF */ + usbvision_frames_free(usbvision); + usbvision_empty_framequeues(usbvision); + usbvision_frames_alloc(usbvision, USBVISION_NUMFRAMES); + } + + if (usbvision->streaming != stream_on) { + /* no stream is running, make it running ! */ + usbvision->streaming = stream_on; + call_all(usbvision, video, s_stream, 1); + } + + /* Then, enqueue as many frames as possible + (like a user of VIDIOC_QBUF would do) */ + for (i = 0; i < usbvision->num_frames; i++) { + frame = &usbvision->frame[i]; + if (frame->grabstate == frame_state_unused) { + /* Mark it as ready and enqueue frame */ + frame->grabstate = frame_state_ready; + frame->scanstate = scan_state_scanning; + /* Accumulated in usbvision_parse_data() */ + frame->scanlength = 0; + + /* set v4l2_format index */ + frame->v4l2_format = usbvision->palette; + + spin_lock_irqsave(&usbvision->queue_lock, lock_flags); + list_add_tail(&frame->frame, &usbvision->inqueue); + spin_unlock_irqrestore(&usbvision->queue_lock, + lock_flags); + } + } + + /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */ + if (list_empty(&(usbvision->outqueue))) { + if (noblock) + return -EAGAIN; + + ret = wait_event_interruptible + (usbvision->wait_frame, + !list_empty(&(usbvision->outqueue))); + if (ret) + return ret; + } + + spin_lock_irqsave(&usbvision->queue_lock, lock_flags); + frame = list_entry(usbvision->outqueue.next, + struct usbvision_frame, frame); + list_del(usbvision->outqueue.next); + spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags); + + /* An error returns an empty frame */ + if (frame->grabstate == frame_state_error) { + frame->bytes_read = 0; + return 0; + } + + PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld", + __func__, + frame->index, frame->bytes_read, frame->scanlength); + + /* copy bytes to user space; we allow for partials reads */ + if ((count + frame->bytes_read) > (unsigned long)frame->scanlength) + count = frame->scanlength - frame->bytes_read; + + if (copy_to_user(buf, frame->data + frame->bytes_read, count)) + return -EFAULT; + + frame->bytes_read += count; + PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld", + __func__, + (unsigned long)count, frame->bytes_read); + + /* For now, forget the frame if it has not been read in one shot. */ +/* if (frame->bytes_read >= frame->scanlength) {*/ /* All data has been read */ + frame->bytes_read = 0; + + /* Mark it as available to be used again. */ + frame->grabstate = frame_state_unused; +/* } */ + + return count; +} + +static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf, + size_t count, loff_t *ppos) +{ + struct usb_usbvision *usbvision = video_drvdata(file); + int res; + + if (mutex_lock_interruptible(&usbvision->v4l2_lock)) + return -ERESTARTSYS; + res = usbvision_read(file, buf, count, ppos); + mutex_unlock(&usbvision->v4l2_lock); + return res; +} + +static int usbvision_mmap(struct file *file, struct vm_area_struct *vma) +{ + unsigned long size = vma->vm_end - vma->vm_start, + start = vma->vm_start; + void *pos; + u32 i; + struct usb_usbvision *usbvision = video_drvdata(file); + + PDEBUG(DBG_MMAP, "mmap"); + + if (!USBVISION_IS_OPERATIONAL(usbvision)) + return -EFAULT; + + if (!(vma->vm_flags & VM_WRITE) || + size != PAGE_ALIGN(usbvision->max_frame_size)) { + return -EINVAL; + } + + for (i = 0; i < usbvision->num_frames; i++) { + if (((PAGE_ALIGN(usbvision->max_frame_size)*i) >> PAGE_SHIFT) == + vma->vm_pgoff) + break; + } + if (i == usbvision->num_frames) { + PDEBUG(DBG_MMAP, + "mmap: user supplied mapping address is out of range"); + return -EINVAL; + } + + /* VM_IO is eventually going to replace PageReserved altogether */ + vma->vm_flags |= VM_IO | VM_DONTEXPAND | VM_DONTDUMP; + + pos = usbvision->frame[i].data; + while (size > 0) { + if (vm_insert_page(vma, start, vmalloc_to_page(pos))) { + PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed"); + return -EAGAIN; + } + start += PAGE_SIZE; + pos += PAGE_SIZE; + size -= PAGE_SIZE; + } + + return 0; +} + +static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma) +{ + struct usb_usbvision *usbvision = video_drvdata(file); + int res; + + if (mutex_lock_interruptible(&usbvision->v4l2_lock)) + return -ERESTARTSYS; + res = usbvision_mmap(file, vma); + mutex_unlock(&usbvision->v4l2_lock); + return res; +} + +/* + * Here comes the stuff for radio on usbvision based devices + * + */ +static int usbvision_radio_open(struct file *file) +{ + struct usb_usbvision *usbvision = video_drvdata(file); + int err_code = 0; + + PDEBUG(DBG_IO, "%s:", __func__); + + if (mutex_lock_interruptible(&usbvision->v4l2_lock)) + return -ERESTARTSYS; + if (usbvision->user) { + dev_err(&usbvision->rdev->dev, + "%s: Someone tried to open an already opened USBVision Radio!\n", + __func__); + err_code = -EBUSY; + } else { + if (power_on_at_open) { + usbvision_reset_power_off_timer(usbvision); + if (usbvision->power == 0) { + usbvision_power_on(usbvision); + usbvision_i2c_register(usbvision); + } + } + + /* Alternate interface 1 is is the biggest frame size */ + err_code = usbvision_set_alternate(usbvision); + if (err_code < 0) { + usbvision->last_error = err_code; + err_code = -EBUSY; + goto out; + } + + /* If so far no errors then we shall start the radio */ + usbvision->radio = 1; + call_all(usbvision, tuner, s_radio); + usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO); + usbvision->user++; + } + + if (err_code) { + if (power_on_at_open) { + usbvision_i2c_unregister(usbvision); + usbvision_power_off(usbvision); + usbvision->initialized = 0; + } + } +out: + mutex_unlock(&usbvision->v4l2_lock); + return err_code; +} + + +static int usbvision_radio_close(struct file *file) +{ + struct usb_usbvision *usbvision = video_drvdata(file); + int err_code = 0; + + PDEBUG(DBG_IO, ""); + + mutex_lock(&usbvision->v4l2_lock); + /* Set packet size to 0 */ + usbvision->iface_alt = 0; + err_code = usb_set_interface(usbvision->dev, usbvision->iface, + usbvision->iface_alt); + + usbvision_audio_off(usbvision); + usbvision->radio = 0; + usbvision->user--; + + if (power_on_at_open) { + usbvision_set_power_off_timer(usbvision); + usbvision->initialized = 0; + } + + if (usbvision->remove_pending) { + printk(KERN_INFO "%s: Final disconnect\n", __func__); + usbvision_release(usbvision); + } + + mutex_unlock(&usbvision->v4l2_lock); + PDEBUG(DBG_IO, "success"); + return err_code; +} + +/* Video registration stuff */ + +/* Video template */ +static const struct v4l2_file_operations usbvision_fops = { + .owner = THIS_MODULE, + .open = usbvision_v4l2_open, + .release = usbvision_v4l2_close, + .read = usbvision_v4l2_read, + .mmap = usbvision_v4l2_mmap, + .unlocked_ioctl = video_ioctl2, +/* .poll = video_poll, */ +}; + +static const struct v4l2_ioctl_ops usbvision_ioctl_ops = { + .vidioc_querycap = vidioc_querycap, + .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, + .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, + .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, + .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, + .vidioc_reqbufs = vidioc_reqbufs, + .vidioc_querybuf = vidioc_querybuf, + .vidioc_qbuf = vidioc_qbuf, + .vidioc_dqbuf = vidioc_dqbuf, + .vidioc_s_std = vidioc_s_std, + .vidioc_enum_input = vidioc_enum_input, + .vidioc_g_input = vidioc_g_input, + .vidioc_s_input = vidioc_s_input, + .vidioc_queryctrl = vidioc_queryctrl, + .vidioc_g_audio = vidioc_g_audio, + .vidioc_s_audio = vidioc_s_audio, + .vidioc_g_ctrl = vidioc_g_ctrl, + .vidioc_s_ctrl = vidioc_s_ctrl, + .vidioc_streamon = vidioc_streamon, + .vidioc_streamoff = vidioc_streamoff, + .vidioc_g_tuner = vidioc_g_tuner, + .vidioc_s_tuner = vidioc_s_tuner, + .vidioc_g_frequency = vidioc_g_frequency, + .vidioc_s_frequency = vidioc_s_frequency, +#ifdef CPTCFG_VIDEO_ADV_DEBUG + .vidioc_g_register = vidioc_g_register, + .vidioc_s_register = vidioc_s_register, +#endif +}; + +static struct video_device usbvision_video_template = { + .fops = &usbvision_fops, + .ioctl_ops = &usbvision_ioctl_ops, + .name = "usbvision-video", + .release = video_device_release, + .tvnorms = USBVISION_NORMS, + .current_norm = V4L2_STD_PAL +}; + + +/* Radio template */ +static const struct v4l2_file_operations usbvision_radio_fops = { + .owner = THIS_MODULE, + .open = usbvision_radio_open, + .release = usbvision_radio_close, + .unlocked_ioctl = video_ioctl2, +}; + +static const struct v4l2_ioctl_ops usbvision_radio_ioctl_ops = { + .vidioc_querycap = vidioc_querycap, + .vidioc_enum_input = vidioc_enum_input, + .vidioc_g_input = vidioc_g_input, + .vidioc_s_input = vidioc_s_input, + .vidioc_queryctrl = vidioc_queryctrl, + .vidioc_g_audio = vidioc_g_audio, + .vidioc_s_audio = vidioc_s_audio, + .vidioc_g_ctrl = vidioc_g_ctrl, + .vidioc_s_ctrl = vidioc_s_ctrl, + .vidioc_g_tuner = vidioc_g_tuner, + .vidioc_s_tuner = vidioc_s_tuner, + .vidioc_g_frequency = vidioc_g_frequency, + .vidioc_s_frequency = vidioc_s_frequency, +}; + +static struct video_device usbvision_radio_template = { + .fops = &usbvision_radio_fops, + .name = "usbvision-radio", + .release = video_device_release, + .ioctl_ops = &usbvision_radio_ioctl_ops, + + .tvnorms = USBVISION_NORMS, + .current_norm = V4L2_STD_PAL +}; + + +static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision, + struct video_device *vdev_template, + char *name) +{ + struct usb_device *usb_dev = usbvision->dev; + struct video_device *vdev; + + if (usb_dev == NULL) { + dev_err(&usbvision->dev->dev, + "%s: usbvision->dev is not set\n", __func__); + return NULL; + } + + vdev = video_device_alloc(); + if (NULL == vdev) + return NULL; + *vdev = *vdev_template; + vdev->lock = &usbvision->v4l2_lock; + vdev->v4l2_dev = &usbvision->v4l2_dev; + snprintf(vdev->name, sizeof(vdev->name), "%s", name); + video_set_drvdata(vdev, usbvision); + return vdev; +} + +/* unregister video4linux devices */ +static void usbvision_unregister_video(struct usb_usbvision *usbvision) +{ + /* Radio Device: */ + if (usbvision->rdev) { + PDEBUG(DBG_PROBE, "unregister %s [v4l2]", + video_device_node_name(usbvision->rdev)); + if (video_is_registered(usbvision->rdev)) + video_unregister_device(usbvision->rdev); + else + video_device_release(usbvision->rdev); + usbvision->rdev = NULL; + } + + /* Video Device: */ + if (usbvision->vdev) { + PDEBUG(DBG_PROBE, "unregister %s [v4l2]", + video_device_node_name(usbvision->vdev)); + if (video_is_registered(usbvision->vdev)) + video_unregister_device(usbvision->vdev); + else + video_device_release(usbvision->vdev); + usbvision->vdev = NULL; + } +} + +/* register video4linux devices */ +static int usbvision_register_video(struct usb_usbvision *usbvision) +{ + /* Video Device: */ + usbvision->vdev = usbvision_vdev_init(usbvision, + &usbvision_video_template, + "USBVision Video"); + if (usbvision->vdev == NULL) + goto err_exit; + if (video_register_device(usbvision->vdev, VFL_TYPE_GRABBER, video_nr) < 0) + goto err_exit; + printk(KERN_INFO "USBVision[%d]: registered USBVision Video device %s [v4l2]\n", + usbvision->nr, video_device_node_name(usbvision->vdev)); + + /* Radio Device: */ + if (usbvision_device_data[usbvision->dev_model].radio) { + /* usbvision has radio */ + usbvision->rdev = usbvision_vdev_init(usbvision, + &usbvision_radio_template, + "USBVision Radio"); + if (usbvision->rdev == NULL) + goto err_exit; + if (video_register_device(usbvision->rdev, VFL_TYPE_RADIO, radio_nr) < 0) + goto err_exit; + printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device %s [v4l2]\n", + usbvision->nr, video_device_node_name(usbvision->rdev)); + } + /* all done */ + return 0; + + err_exit: + dev_err(&usbvision->dev->dev, + "USBVision[%d]: video_register_device() failed\n", + usbvision->nr); + usbvision_unregister_video(usbvision); + return -1; +} + +/* + * usbvision_alloc() + * + * This code allocates the struct usb_usbvision. + * It is filled with default values. + * + * Returns NULL on error, a pointer to usb_usbvision else. + * + */ +static struct usb_usbvision *usbvision_alloc(struct usb_device *dev, + struct usb_interface *intf) +{ + struct usb_usbvision *usbvision; + + usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL); + if (usbvision == NULL) + return NULL; + + usbvision->dev = dev; + if (v4l2_device_register(&intf->dev, &usbvision->v4l2_dev)) + goto err_free; + + mutex_init(&usbvision->v4l2_lock); + + /* prepare control urb for control messages during interrupts */ + usbvision->ctrl_urb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL); + if (usbvision->ctrl_urb == NULL) + goto err_unreg; + init_waitqueue_head(&usbvision->ctrl_urb_wq); + + usbvision_init_power_off_timer(usbvision); + + return usbvision; + +err_unreg: + v4l2_device_unregister(&usbvision->v4l2_dev); +err_free: + kfree(usbvision); + return NULL; +} + +/* + * usbvision_release() + * + * This code does final release of struct usb_usbvision. This happens + * after the device is disconnected -and- all clients closed their files. + * + */ +static void usbvision_release(struct usb_usbvision *usbvision) +{ + PDEBUG(DBG_PROBE, ""); + + usbvision_reset_power_off_timer(usbvision); + + usbvision->initialized = 0; + + usbvision_remove_sysfs(usbvision->vdev); + usbvision_unregister_video(usbvision); + + usb_free_urb(usbvision->ctrl_urb); + + v4l2_device_unregister(&usbvision->v4l2_dev); + kfree(usbvision); + + PDEBUG(DBG_PROBE, "success"); +} + + +/*********************** usb interface **********************************/ + +static void usbvision_configure_video(struct usb_usbvision *usbvision) +{ + int model; + + if (usbvision == NULL) + return; + + model = usbvision->dev_model; + usbvision->palette = usbvision_v4l2_format[2]; /* V4L2_PIX_FMT_RGB24; */ + + if (usbvision_device_data[usbvision->dev_model].vin_reg2_override) { + usbvision->vin_reg2_preset = + usbvision_device_data[usbvision->dev_model].vin_reg2; + } else { + usbvision->vin_reg2_preset = 0; + } + + usbvision->tvnorm_id = usbvision_device_data[model].video_norm; + + usbvision->video_inputs = usbvision_device_data[model].video_channels; + usbvision->ctl_input = 0; + + /* This should be here to make i2c clients to be able to register */ + /* first switch off audio */ + if (usbvision_device_data[model].audio_channels > 0) + usbvision_audio_off(usbvision); + if (!power_on_at_open) { + /* and then power up the noisy tuner */ + usbvision_power_on(usbvision); + usbvision_i2c_register(usbvision); + } +} + +/* + * usbvision_probe() + * + * This procedure queries device descriptor and accepts the interface + * if it looks like USBVISION video device + * + */ +static int usbvision_probe(struct usb_interface *intf, + const struct usb_device_id *devid) +{ + struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf)); + struct usb_interface *uif; + __u8 ifnum = intf->altsetting->desc.bInterfaceNumber; + const struct usb_host_interface *interface; + struct usb_usbvision *usbvision = NULL; + const struct usb_endpoint_descriptor *endpoint; + int model, i; + + PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u", + dev->descriptor.idVendor, + dev->descriptor.idProduct, ifnum); + + model = devid->driver_info; + if (model < 0 || model >= usbvision_device_data_size) { + PDEBUG(DBG_PROBE, "model out of bounds %d", model); + return -ENODEV; + } + printk(KERN_INFO "%s: %s found\n", __func__, + usbvision_device_data[model].model_string); + + if (usbvision_device_data[model].interface >= 0) + interface = &dev->actconfig->interface[usbvision_device_data[model].interface]->altsetting[0]; + else + interface = &dev->actconfig->interface[ifnum]->altsetting[0]; + endpoint = &interface->endpoint[1].desc; + if (!usb_endpoint_xfer_isoc(endpoint)) { + dev_err(&intf->dev, "%s: interface %d. has non-ISO endpoint!\n", + __func__, ifnum); + dev_err(&intf->dev, "%s: Endpoint attributes %d", + __func__, endpoint->bmAttributes); + return -ENODEV; + } + if (usb_endpoint_dir_out(endpoint)) { + dev_err(&intf->dev, "%s: interface %d. has ISO OUT endpoint!\n", + __func__, ifnum); + return -ENODEV; + } + + usbvision = usbvision_alloc(dev, intf); + if (usbvision == NULL) { + dev_err(&intf->dev, "%s: couldn't allocate USBVision struct\n", __func__); + return -ENOMEM; + } + + if (dev->descriptor.bNumConfigurations > 1) + usbvision->bridge_type = BRIDGE_NT1004; + else if (model == DAZZLE_DVC_90_REV_1_SECAM) + usbvision->bridge_type = BRIDGE_NT1005; + else + usbvision->bridge_type = BRIDGE_NT1003; + PDEBUG(DBG_PROBE, "bridge_type %d", usbvision->bridge_type); + + /* compute alternate max packet sizes */ + uif = dev->actconfig->interface[0]; + + usbvision->num_alt = uif->num_altsetting; + PDEBUG(DBG_PROBE, "Alternate settings: %i", usbvision->num_alt); + usbvision->alt_max_pkt_size = kmalloc(32 * usbvision->num_alt, GFP_KERNEL); + if (usbvision->alt_max_pkt_size == NULL) { + dev_err(&intf->dev, "usbvision: out of memory!\n"); + return -ENOMEM; + } + + for (i = 0; i < usbvision->num_alt; i++) { + u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc. + wMaxPacketSize); + usbvision->alt_max_pkt_size[i] = + (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1); + PDEBUG(DBG_PROBE, "Alternate setting %i, max size= %i", i, + usbvision->alt_max_pkt_size[i]); + } + + + usbvision->nr = usbvision_nr++; + + usbvision->have_tuner = usbvision_device_data[model].tuner; + if (usbvision->have_tuner) + usbvision->tuner_type = usbvision_device_data[model].tuner_type; + + usbvision->dev_model = model; + usbvision->remove_pending = 0; + usbvision->iface = ifnum; + usbvision->iface_alt = 0; + usbvision->video_endp = endpoint->bEndpointAddress; + usbvision->isoc_packet_size = 0; + usbvision->usb_bandwidth = 0; + usbvision->user = 0; + usbvision->streaming = stream_off; + usbvision_configure_video(usbvision); + usbvision_register_video(usbvision); + + usbvision_create_sysfs(usbvision->vdev); + + PDEBUG(DBG_PROBE, "success"); + return 0; +} + + +/* + * usbvision_disconnect() + * + * This procedure stops all driver activity, deallocates interface-private + * structure (pointed by 'ptr') and after that driver should be removable + * with no ill consequences. + * + */ +static void usbvision_disconnect(struct usb_interface *intf) +{ + struct usb_usbvision *usbvision = to_usbvision(usb_get_intfdata(intf)); + + PDEBUG(DBG_PROBE, ""); + + if (usbvision == NULL) { + pr_err("%s: usb_get_intfdata() failed\n", __func__); + return; + } + + mutex_lock(&usbvision->v4l2_lock); + + /* At this time we ask to cancel outstanding URBs */ + usbvision_stop_isoc(usbvision); + + v4l2_device_disconnect(&usbvision->v4l2_dev); + + if (usbvision->power) { + usbvision_i2c_unregister(usbvision); + usbvision_power_off(usbvision); + } + usbvision->remove_pending = 1; /* Now all ISO data will be ignored */ + + usb_put_dev(usbvision->dev); + usbvision->dev = NULL; /* USB device is no more */ + + mutex_unlock(&usbvision->v4l2_lock); + + if (usbvision->user) { + printk(KERN_INFO "%s: In use, disconnect pending\n", + __func__); + wake_up_interruptible(&usbvision->wait_frame); + wake_up_interruptible(&usbvision->wait_stream); + } else { + usbvision_release(usbvision); + } + + PDEBUG(DBG_PROBE, "success"); +} + +static struct usb_driver usbvision_driver = { + .name = "usbvision", + .id_table = usbvision_table, + .probe = usbvision_probe, + .disconnect = usbvision_disconnect, +}; + +/* + * usbvision_init() + * + * This code is run to initialize the driver. + * + */ +static int __init usbvision_init(void) +{ + int err_code; + + PDEBUG(DBG_PROBE, ""); + + PDEBUG(DBG_IO, "IO debugging is enabled [video]"); + PDEBUG(DBG_PROBE, "PROBE debugging is enabled [video]"); + PDEBUG(DBG_MMAP, "MMAP debugging is enabled [video]"); + + /* disable planar mode support unless compression enabled */ + if (isoc_mode != ISOC_MODE_COMPRESS) { + /* FIXME : not the right way to set supported flag */ + usbvision_v4l2_format[6].supported = 0; /* V4L2_PIX_FMT_YVU420 */ + usbvision_v4l2_format[7].supported = 0; /* V4L2_PIX_FMT_YUV422P */ + } + + err_code = usb_register(&usbvision_driver); + + if (err_code == 0) { + printk(KERN_INFO DRIVER_DESC " : " USBVISION_VERSION_STRING "\n"); + PDEBUG(DBG_PROBE, "success"); + } + return err_code; +} + +static void __exit usbvision_exit(void) +{ + PDEBUG(DBG_PROBE, ""); + + usb_deregister(&usbvision_driver); + PDEBUG(DBG_PROBE, "success"); +} + +module_init(usbvision_init); +module_exit(usbvision_exit); + +/* + * Overrides for Emacs so that we follow Linus's tabbing style. + * --------------------------------------------------------------------------- + * Local variables: + * c-basic-offset: 8 + * End: + */ |