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-rw-r--r--target/linux/coldfire/patches/009-Add-ALSA-driver-for-MCF5445x.patch1869
1 files changed, 1869 insertions, 0 deletions
diff --git a/target/linux/coldfire/patches/009-Add-ALSA-driver-for-MCF5445x.patch b/target/linux/coldfire/patches/009-Add-ALSA-driver-for-MCF5445x.patch
new file mode 100644
index 0000000000..52c1f56a8c
--- /dev/null
+++ b/target/linux/coldfire/patches/009-Add-ALSA-driver-for-MCF5445x.patch
@@ -0,0 +1,1869 @@
+From d37d2d880efdc0ce515df4155ddafef3835d1b7f Mon Sep 17 00:00:00 2001
+From: Alison Wang <b18965@freescale.com>
+Date: Thu, 4 Aug 2011 09:59:41 +0800
+Subject: [PATCH 09/52] Add ALSA driver for MCF5445x
+
+Add ALSA driver for MCF54451 and MCF54455.
+
+Signed-off-by: Alison Wang <b18965@freescale.com>
+---
+ sound/Kconfig | 6 +-
+ sound/Makefile | 1 +
+ sound/coldfire/Kconfig | 14 +
+ sound/coldfire/Makefile | 6 +
+ sound/coldfire/coldfire-codec-spi.c | 93 ++
+ sound/coldfire/snd-coldfire.c | 1664 +++++++++++++++++++++++++++++++++++
+ sound/coldfire/snd-coldfire.h | 15 +
+ 7 files changed, 1795 insertions(+), 4 deletions(-)
+ create mode 100644 sound/coldfire/Kconfig
+ create mode 100644 sound/coldfire/Makefile
+ create mode 100644 sound/coldfire/coldfire-codec-spi.c
+ create mode 100644 sound/coldfire/snd-coldfire.c
+ create mode 100644 sound/coldfire/snd-coldfire.h
+
+--- a/sound/Kconfig
++++ b/sound/Kconfig
+@@ -59,8 +59,6 @@ config SOUND_OSS_CORE_PRECLAIM
+
+ source "sound/oss/dmasound/Kconfig"
+
+-if !M68K
+-
+ menuconfig SND
+ tristate "Advanced Linux Sound Architecture"
+ help
+@@ -85,6 +83,8 @@ source "sound/aoa/Kconfig"
+
+ source "sound/arm/Kconfig"
+
++source "sound/coldfire/Kconfig"
++
+ source "sound/atmel/Kconfig"
+
+ source "sound/spi/Kconfig"
+@@ -121,8 +121,6 @@ source "sound/oss/Kconfig"
+
+ endif # SOUND_PRIME
+
+-endif # !M68K
+-
+ endif # SOUND
+
+ # AC97_BUS is used from both sound and ucb1400
+--- a/sound/Makefile
++++ b/sound/Makefile
+@@ -8,6 +8,7 @@ obj-$(CONFIG_DMASOUND) += oss/
+ obj-$(CONFIG_SND) += core/ i2c/ drivers/ isa/ pci/ ppc/ arm/ sh/ synth/ usb/ \
+ sparc/ spi/ parisc/ pcmcia/ mips/ soc/ atmel/
+ obj-$(CONFIG_SND_AOA) += aoa/
++obj-$(CONFIG_SND_COLDFIRE) += coldfire/
+
+ # This one must be compilable even if sound is configured out
+ obj-$(CONFIG_AC97_BUS) += ac97_bus.o
+--- /dev/null
++++ b/sound/coldfire/Kconfig
+@@ -0,0 +1,14 @@
++
++menu "ALSA for Coldfire"
++
++config SND_COLDFIRE
++ bool "Coldfire sound devices"
++ depends on SND
++ select SND_PCM
++ select SSIAUDIO_USE_EDMA
++ default y
++ help
++ Support for sound devices specific to Coldfire architectures.
++
++endmenu
++
+--- /dev/null
++++ b/sound/coldfire/Makefile
+@@ -0,0 +1,6 @@
++#
++# Makefile for Coldfire ALSA
++#
++
++obj-y += snd-coldfire.o coldfire-codec-spi.o
++
+--- /dev/null
++++ b/sound/coldfire/coldfire-codec-spi.c
+@@ -0,0 +1,93 @@
++/*
++ * linux/sound/coldfire/coldfire-codec-spi.c
++ *
++ * Copyright (C) 2008-2011 Freescale Semiconductor, Inc. All Rights Reserved.
++ * Author: Kurt Mahan <kmahan@freescale.com>
++ *
++ * Simple SPI interface for the CODEC.
++ *
++ * This 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.
++ */
++
++#include <linux/device.h>
++#include <linux/init.h>
++#include <linux/spi/spi.h>
++#include <linux/kernel.h>
++#include <asm/mcfsim.h>
++#include <asm/coldfire.h>
++#include <linux/delay.h>
++
++#define MCF_CODEC_SPI_DRIVER_NAME "mcf_codec_spi"
++
++static struct spi_device *mcf_codec_spi;
++
++/*
++ * Write CODEC register via SPI
++ */
++int mcf_codec_spi_write(u8 addr, u16 data)
++{
++ u16 spi_word;
++
++ if (mcf_codec_spi == NULL)
++ return -ENODEV;
++
++ spi_word = ((addr & 0x7F)<<9)|(data & 0x1FF);
++ return spi_write(mcf_codec_spi, (const u8 *)&spi_word,
++ sizeof(spi_word));
++}
++EXPORT_SYMBOL(mcf_codec_spi_write);
++
++static int __devinit mcf_codec_spi_probe(struct spi_device *spi)
++{
++ spi->dev.power.power_state = PMSG_ON;
++ mcf_codec_spi = spi;
++
++ return 0;
++}
++
++static int __devexit mcf_codec_spi_remove(struct spi_device *spi)
++{
++ return 0;
++}
++
++static int mcf_codec_spi_suspend(struct spi_device *spi, pm_message_t message)
++{
++ return 0;
++}
++
++static int mcf_codec_spi_resume(struct spi_device *spi)
++{
++ return 0;
++}
++
++static struct spi_driver mcf_codec_spi_driver = {
++ .driver = {
++ .name = MCF_CODEC_SPI_DRIVER_NAME,
++ .bus = &spi_bus_type,
++ .owner = THIS_MODULE,
++ },
++ .probe = mcf_codec_spi_probe,
++ .remove = __devexit_p(mcf_codec_spi_remove),
++ .suspend = mcf_codec_spi_suspend,
++ .resume = mcf_codec_spi_resume,
++};
++
++static int __init mcf_codec_spi_init(void)
++{
++ return spi_register_driver(&mcf_codec_spi_driver);
++}
++module_init(mcf_codec_spi_init);
++
++static void __exit mcf_codec_spi_exit(void)
++{
++ spi_unregister_driver(&mcf_codec_spi_driver);
++}
++module_exit(mcf_codec_spi_exit);
++
++
++MODULE_DESCRIPTION("Coldfire Codec SPI driver");
++MODULE_AUTHOR("Kurt Mahan, Freescale Semiconductor, Inc.");
++MODULE_LICENSE("GPL");
+--- /dev/null
++++ b/sound/coldfire/snd-coldfire.c
+@@ -0,0 +1,1664 @@
++/*
++ * linux/sound/coldfire/snd-coldfire.c
++ *
++ * Copyright (C) 2008-2011 Freescale Semiconductor, Inc. All Rights Reserved.
++ * Author: York Sun <r58495@freescale.com>
++ * Alison Wang <b18965@freescale.com>
++ *
++ * Coldfire ALSA driver based on SSI and TLV320A
++ *
++ * This 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.
++ *
++ ***************************************************************************
++ *
++ * NOTE: This driver was tested on MCF5445x, MCF5301x, MCF5227x, MCF532x and
++ * MCF537x platforms.
++ * */
++
++#include <linux/module.h>
++#include <linux/moduleparam.h>
++#include <linux/platform_device.h>
++#include <linux/init.h>
++#include <linux/device.h>
++#include <linux/slab.h>
++#include <linux/dma-mapping.h>
++#include <linux/ioctl.h>
++#include <linux/soundcard.h>
++#include <linux/spi/spi.h>
++
++#include <sound/core.h>
++#include <sound/pcm.h>
++#include <sound/pcm_params.h>
++#include <sound/control.h>
++#include <linux/fs.h>
++#include <linux/delay.h>
++
++#include <asm/mcfsim.h>
++#include <asm/coldfire.h>
++#include <asm/mcf_edma.h>
++#include "snd-coldfire.h"
++
++#if defined(CONFIG_M5445X)
++#include <asm/mcf5445x_ssi.h>
++#endif
++
++#define CF_ALSA_DEBUG 0
++#if CF_ALSA_DEBUG
++#define DBG(fmt, args...) printk(KERN_INFO "[%s] " fmt , \
++ __func__, ## args)
++#else
++#define DBG(fmt, args...) do {} while (0)
++#endif
++
++#define SOUND_CARD_NAME "Coldfire ALSA"
++#define MAX_BUFFER_SIZE (32*1024)
++
++/* eDMA channel for SSI channel 0,1 TX,RX */
++#define DMA_TX_TCD0 MCF_EDMA_CHAN_TIMER2
++#define DMA_TX_TCD1 MCF_EDMA_CHAN_TIMER3
++#define DMA_RX_TCD0 MCF_EDMA_CHAN_TIMER0
++#define DMA_RX_TCD1 MCF_EDMA_CHAN_TIMER1
++
++#define CODEC_LEFT_IN_REG (0x00)
++#define CODEC_RIGHT_IN_REG (0x01)
++#define CODEC_LEFT_HP_VOL_REG (0x02)
++#define CODEC_RIGHT_HP_VOL_REG (0x03)
++#define CODEC_ANALOG_APATH_REG (0x04)
++#define CODEC_DIGITAL_APATH_REG (0x05)
++#define CODEC_POWER_DOWN_REG (0x06)
++#define CODEC_DIGITAL_IF_FMT_REG (0x07)
++#define CODEC_SAMPLE_RATE_REG (0x08)
++#define CODEC_DIGITAL_IF_ACT_REG (0x09)
++#define CODEC_RESET_REG (0x0f)
++
++#define TLV320AIC23_CODEC_SAMPLE_RATE_REG (0x08)
++#define TLV320AIC23_CODEC_SAMPLERATE_REG_8KHZ (0x0C)
++#define TLV320AIC23_CODEC_SAMPLERATE_REG_11KHZ (0x0C)
++#define TLV320AIC23_CODEC_SAMPLERATE_REG_16KHZ (0x58)
++#define TLV320AIC23_CODEC_SAMPLERATE_REG_22KHZ (0x62)
++#define TLV320AIC23_CODEC_SAMPLERATE_REG_44KHZ (0x22)
++#define TLV320AIC23_CODEC_SAMPLERATE_REG_48KHZ (0x00)
++
++#define MCF_SSI_AUDIO_IRQ_LEVEL (5)
++#define TLV320A_VOL_MAX 0x07F
++#define TLV320A_VOL_MIN 0x030
++#define TLV320A_VOL_INIT 0x065
++#define TLV320A_LINEIN_MAX 0x1F
++#define TLV320A_LINEIN_INIT 0x17
++#define TLV320A_ANALOGPATH_INIT 0x11
++
++/* Codec settings */
++#define MCF_SSI_AUDIO_MCLK_1 (12288000U) /*Hz*/
++#define MCF_SSI_AUDIO_MCLK_2 (16934400U) /*Hz*/
++#define MCF_SSI_AUDIO_MCLK_3 (14112000U) /*Hz*/
++#define MCF_SSI_AUDIO_MCLK_4 (18432000U) /*Hz*/
++
++#define MCF_SSI_AUDIO_SSDIV_VALUE_1 \
++ ((((u32)MCF_CLK*2)/MCF_SSI_AUDIO_MCLK_1)+ \
++ (((((u32)MCF_CLK*2*10)/MCF_SSI_AUDIO_MCLK_1)%10) > 5))
++
++#define MCF_SSI_AUDIO_SSDIV_VALUE_2 \
++ ((((u32)MCF_CLK*2)/MCF_SSI_AUDIO_MCLK_2)+ \
++ (((((u32)MCF_CLK*2*10)/MCF_SSI_AUDIO_MCLK_2)%10) > 5))
++
++#define MCF_SSI_AUDIO_SSDIV_VALUE_3 \
++ ((((u32)MCF_CLK*2)/MCF_SSI_AUDIO_MCLK_3)+ \
++ (((((u32)MCF_CLK*2*10)/MCF_SSI_AUDIO_MCLK_3)%10) > 5))
++
++#define MCF_SSI_AUDIO_SSDIV_VALUE_4 \
++ ((((u32)MCF_CLK*2)/MCF_SSI_AUDIO_MCLK_4)+ \
++ (((((u32)MCF_CLK*2*10)/MCF_SSI_AUDIO_MCLK_4)%10) > 5))
++
++#define SNDRV_COLDFIRE_PCM_PLAYBACK_FORMATS SNDRV_PCM_FMTBIT_S16_BE
++#define SNDRV_COLDFIRE_PCM_CAPTURE_FORMATS SNDRV_PCM_FMTBIT_S16_BE
++
++#define RXFWM 2
++#define TXFWM 2
++#define HW_PERIODS_BYTES_MIN 4096
++#define HW_PERIODS_BYTES_STEP 4096
++
++#define INPUT_MICROPHONE 0
++#define INPUT_LINEIN 1
++#define NUM_TCDS 4
++
++static char *id;
++static struct platform_device *device;
++static int g_tx_dmaing;
++static int g_rx_dmaing;
++static unsigned char g_mastervol, g_lineinvol, g_analogpath;
++
++/** Use 4 TCDs for scatter/gather address
++ * to setup dma chain, one TCD per period
++ * so that we don't need change them on the fly
++ */
++
++/**
++ * Link Descriptor
++ *
++ * must be aligned on a 32-byte boundary.
++ */
++struct dma_tcd {
++ __be32 saddr; /* source address */
++ __be16 attr; /* transfer attribute */
++ __be16 soffset; /* source offset */
++ __be32 nbytes; /* minor byte count */
++ __be32 slast; /* last source address adjust */
++ __be32 daddr; /* dest address */
++ __be16 citer; /* current minor looplink, major count */
++ __be16 doffset; /* dest offset */
++ __be32 dlast_sga; /* last dest addr adjust, scatter/gather addr*/
++ __be16 biter; /* begging minor looklink, major count */
++ __be16 csr; /* control and status */
++} __packed;
++
++/** dma_private: p-substream DMA data
++ *
++ * The tcd[] array is first because it needs to be aligned on a 32-byte
++ * boundary, so putting it first will ensure alignment without padding the
++ * structure.
++ *
++ * @tcd[]: array of TCDs
++ */
++struct dma_private {
++ struct dma_tcd tcd0[NUM_TCDS];
++ struct dma_tcd tcd1[NUM_TCDS];
++ dma_addr_t tcd_buf_phys; /* physical address of dma_private */
++ dma_addr_t dma_buf_phys;
++ dma_addr_t dma_buf_next;
++ dma_addr_t dma_buf_end;
++ size_t period_size;
++ unsigned int num_periods;
++};
++
++struct tlv320a_audio_device {
++ struct spi_device *spi;
++ u32 speed;
++ u32 stereo;
++ u32 bits;
++ u32 format;
++ u8 isopen;
++ u8 dmaing;
++ u8 ssi_enabled;
++ u8 channel;
++ spinlock_t lock;
++ u8 *audio_buf;
++};
++
++/* chip specific define */
++struct chip_spec {
++ struct snd_card *card;
++ struct snd_pcm *pcm;
++ struct tlv320a_audio_device *audio_device;
++ u32 offset;
++ void *mixer_data;
++};
++
++/* hardware definition */
++static struct snd_pcm_hardware snd_coldfire_playback_hw = {
++ .info = (SNDRV_PCM_INFO_INTERLEAVED |
++#if defined(CONFIG_MMU)
++ SNDRV_PCM_INFO_MMAP |
++ SNDRV_PCM_INFO_MMAP_VALID|
++#endif
++ SNDRV_PCM_INFO_BLOCK_TRANSFER),
++ .formats = SNDRV_COLDFIRE_PCM_PLAYBACK_FORMATS,
++ .rates = SNDRV_PCM_RATE_8000_48000,
++ .rate_min = 8000,
++ .rate_max = 48000,
++ .channels_min = 1,
++ .channels_max = 2,
++ .buffer_bytes_max = MAX_BUFFER_SIZE,
++ .period_bytes_min = HW_PERIODS_BYTES_MIN,
++ .period_bytes_max = MAX_BUFFER_SIZE/NUM_TCDS,
++ .periods_min = NUM_TCDS,
++ .periods_max = NUM_TCDS,
++ .fifo_size = 0,
++};
++
++/* hardware definition */
++static struct snd_pcm_hardware snd_coldfire_capture_hw = {
++ .info = (SNDRV_PCM_INFO_INTERLEAVED |
++#if defined(CONFIG_MMU)
++ SNDRV_PCM_INFO_MMAP |
++ SNDRV_PCM_INFO_MMAP_VALID|
++#endif
++ SNDRV_PCM_INFO_BLOCK_TRANSFER),
++ .formats = SNDRV_COLDFIRE_PCM_CAPTURE_FORMATS,
++ .rates = SNDRV_PCM_RATE_8000_48000,
++ .rate_min = 8000,
++ .rate_max = 48000,
++ .channels_min = 1,
++ .channels_max = 2,
++ .buffer_bytes_max = MAX_BUFFER_SIZE,
++ .period_bytes_min = HW_PERIODS_BYTES_MIN,
++ .period_bytes_max = MAX_BUFFER_SIZE/NUM_TCDS,
++ .periods_min = NUM_TCDS,
++ .periods_max = NUM_TCDS,
++ .fifo_size = 0,
++};
++
++static unsigned int rates[] = {8000, 11025, 16000, 22000,
++ 22050, 44000, 44100, 48000};
++
++/* hw constraints */
++static struct snd_pcm_hw_constraint_list constraints_rates = {
++ .count = ARRAY_SIZE(rates),
++ .list = rates,
++ .mask = 0,
++};
++
++static inline void ssi_audio_dma_playback_start(void)
++{
++ g_tx_dmaing = 1;
++ mcf_edma_start_transfer(DMA_TX_TCD0);
++ mcf_edma_start_transfer(DMA_TX_TCD1);
++}
++
++static inline void ssi_audio_dma_capture_start(void)
++{
++ g_rx_dmaing = 1;
++ mcf_edma_start_transfer(DMA_RX_TCD0);
++ mcf_edma_start_transfer(DMA_RX_TCD1);
++}
++
++static inline void ssi_audio_dma_playback_stop(void)
++{
++ g_tx_dmaing = 0;
++ mcf_edma_stop_transfer(DMA_TX_TCD0);
++ mcf_edma_stop_transfer(DMA_TX_TCD1);
++}
++
++inline void ssi_audio_dma_capture_stop(void)
++{
++ g_rx_dmaing = 0;
++ mcf_edma_stop_transfer(DMA_RX_TCD0);
++ mcf_edma_stop_transfer(DMA_RX_TCD1);
++}
++
++/**
++ * fill_tcd_params - Fill transfer control descriptor (TCD)
++ * @base: base address of TCD
++ * @source: source address
++ * @dest: destination address
++ * @attr: attributes
++ * @soff: source offset
++ * @nbytes: number of bytes to be transfered in minor loop
++ * @slast: last source address adjustment
++ * @citer: major loop count
++ * @biter: beginning minor loop count
++ * @doff: destination offset
++ * @dlast_sga: last destination address adjustment
++ * @major_int: generate interrupt after each major loop
++ * @disable_req: disable DMA request after major loop
++ * @enable_sg: enable scatter/gather address
++ */
++void fill_tcd_params(u32 base, u32 source, u32 dest,
++ u32 attr, u32 soff, u32 nbytes, u32 slast,
++ u32 citer, u32 biter, u32 doff, u32 dlast_sga,
++ int major_int, int disable_req, int enable_sg)
++{
++ struct dma_tcd *tcd = (struct dma_tcd *) base;
++
++ tcd->saddr = source;
++ tcd->attr = attr;
++ tcd->soffset = soff;
++ tcd->nbytes = nbytes;
++ tcd->slast = slast;
++ tcd->daddr = dest;
++ tcd->citer = citer & 0x7fff;
++ tcd->doffset = doff;
++ tcd->dlast_sga = dlast_sga;
++ tcd->biter = biter & 0x7fff;
++ tcd->csr = ((major_int) ? 0x2 : 0) |
++ ((disable_req) ? 0x8 : 0) |
++ ((enable_sg) ? 0x10 : 0);
++}
++
++static int
++ssi_audio_dma_playback_config(struct snd_pcm_substream *substream)
++{
++ struct snd_pcm_runtime *runtime = substream->runtime;
++ struct dma_private *dma_private = runtime->private_data;
++ u32 size = frames_to_bytes(runtime, runtime->period_size);
++ u32 offset, soffset, daddr0, daddr1, attr, sga0, sga1;
++ u32 i, nbyte, major_loops;
++
++ if ((runtime->channels < 1) || (runtime->channels > 2)) {
++ printk(KERN_ERR "Error on channels = %d\n", runtime->channels);
++ return -EINVAL;
++ }
++
++ dma_private->dma_buf_phys = runtime->dma_addr;
++ dma_private->dma_buf_next = dma_private->dma_buf_phys;
++ dma_private->dma_buf_end = dma_private->dma_buf_phys +
++ runtime->periods * size;
++
++ if (runtime->format == SNDRV_PCM_FORMAT_S16_BE) {
++ nbyte = 2 * TXFWM;
++ soffset = 2 * runtime->channels;
++ daddr0 = (u32)&MCF_SSI_TX0 + 2;
++ daddr1 = (u32)&MCF_SSI_TX1 + 2;
++ attr = MCF_EDMA_TCD_ATTR_SSIZE_16BIT |
++ MCF_EDMA_TCD_ATTR_DSIZE_16BIT;
++ } else {
++ printk(KERN_ERR "Not supported PCM format %x\n",
++ runtime->format);
++ return -EINVAL;
++ }
++
++ major_loops = size/nbyte/runtime->channels;
++ sga0 = (u32)dma_private->tcd_buf_phys;
++ sga1 = (u32)dma_private->tcd_buf_phys +
++ 4 * sizeof(struct dma_tcd);
++
++#if defined(CONFIG_M5301x) || defined(CONFIG_M5445X)
++ MCF_EDMA_TCD10_CSR = 0;
++ MCF_EDMA_TCD11_CSR = 0;
++#else
++ MCF_EDMA_TCD11_CSR = 0;
++ MCF_EDMA_TCD12_CSR = 0;
++#endif
++ offset = (runtime->channels - 1) * 2;
++ mcf_edma_set_tcd_params(DMA_TX_TCD0,
++ (u32)dma_private->dma_buf_next,
++ daddr0,
++ attr,
++ soffset,
++ nbyte,
++ 0, /* slast */
++ major_loops, /* citer */
++ major_loops, /* biter */
++ 0, /* dest offset */
++ sga0,
++ 1, /* major_int */
++ 0); /* enable dma request after */
++
++ mcf_edma_set_tcd_params(DMA_TX_TCD1,
++ (u32)dma_private->dma_buf_next + offset,
++ daddr1,
++ attr,
++ soffset,
++ nbyte,
++ 0, /* slast */
++ major_loops, /* citer */
++ major_loops, /* biter */
++ 0, /* dest offset */
++ sga1,
++ 0, /* major_int */
++ 0); /* enable dma request after */
++
++ while (!(MCF_EDMA_TCD_CSR(DMA_TX_TCD0) & MCF_EDMA_TCD_CSR_E_SG))
++ MCF_EDMA_TCD_CSR(DMA_TX_TCD0) |= MCF_EDMA_TCD_CSR_E_SG;
++ while (!(MCF_EDMA_TCD_CSR(DMA_TX_TCD1) & MCF_EDMA_TCD_CSR_E_SG))
++ MCF_EDMA_TCD_CSR(DMA_TX_TCD1) |= MCF_EDMA_TCD_CSR_E_SG;
++
++ for (i = 0; i < NUM_TCDS; i++) {
++ dma_private->dma_buf_next += size;
++ if (dma_private->dma_buf_next >= dma_private->dma_buf_end)
++ dma_private->dma_buf_next = dma_private->dma_buf_phys;
++ sga0 = (u32)dma_private->tcd_buf_phys +
++ ((i+1)%NUM_TCDS) * sizeof(struct dma_tcd);
++ sga1 = (u32)dma_private->tcd_buf_phys +
++ ((i+1)%NUM_TCDS + 4) * sizeof(struct dma_tcd);
++ DBG("sga0 = 0x%x, sga1 = 0x%x.\n", sga0, sga1);
++ fill_tcd_params((u32)&dma_private->tcd0[i],
++ (u32)dma_private->dma_buf_next,
++ daddr0,
++ attr,
++ soffset,
++ nbyte,
++ 0, /* slast */
++ major_loops, /* citer */
++ major_loops, /* biter */
++ 0, /* dest offset */
++ sga0,
++ 1, /* major_int */
++ 0, /* enable dma request after */
++ 1); /* enable scatter/gather */
++
++ fill_tcd_params((u32)&dma_private->tcd1[i],
++ (u32)dma_private->dma_buf_next + offset,
++ daddr1,
++ attr,
++ soffset,
++ nbyte,
++ 0, /* slast */
++ major_loops, /* citer */
++ major_loops, /* biter */
++ 0, /* dest offset */
++ sga1,
++ 0, /* major_int */
++ 0, /* enable dma request after */
++ 1); /* enable scatter/gather */
++ }
++
++ return 0;
++}
++
++static int
++ssi_audio_dma_capture_config(struct snd_pcm_substream *substream)
++{
++ struct snd_pcm_runtime *runtime = substream->runtime;
++ struct dma_private *dma_private = runtime->private_data;
++ u32 size = frames_to_bytes(runtime, runtime->period_size);
++ u32 offset, saddr0, saddr1, doffset, attr, sga0, sga1;
++ int i, nbyte, major_loops;
++
++ if ((runtime->channels < 1) || (runtime->channels > 2)) {
++ printk(KERN_ERR "Error on channels = %d\n", runtime->channels);
++ return -EINVAL;
++ }
++
++ dma_private->dma_buf_phys = runtime->dma_addr;
++ dma_private->dma_buf_next = dma_private->dma_buf_phys;
++ dma_private->dma_buf_end = dma_private->dma_buf_phys +
++ runtime->periods * size;
++
++ switch (runtime->format) {
++ case SNDRV_PCM_FORMAT_S16_BE:
++ saddr0 = (u32)&MCF_SSI_RX0 + 2;
++ saddr1 = (u32)&MCF_SSI_RX1 + 2;
++ nbyte = 2 * RXFWM;
++ doffset = 2 * runtime->channels;
++ attr = MCF_EDMA_TCD_ATTR_SSIZE_16BIT |
++ MCF_EDMA_TCD_ATTR_DSIZE_16BIT;
++ break;
++ default:
++ printk(KERN_ERR "Not supported PCM format %x\n",
++ runtime->format);
++ return -EINVAL;
++ }
++
++ major_loops = size/nbyte/runtime->channels;
++ sga0 = (u32)dma_private->tcd_buf_phys;
++ sga1 = (u32)dma_private->tcd_buf_phys +
++ 4 * sizeof(struct dma_tcd);
++
++#if defined(CONFIG_M5301x) || defined(CONFIG_M5445X)
++ MCF_EDMA_TCD8_CSR = 0;
++ MCF_EDMA_TCD9_CSR = 0;
++#else
++ MCF_EDMA_TCD9_CSR = 0;
++ MCF_EDMA_TCD10_CSR = 0;
++#endif
++ offset = (runtime->channels - 1) * 2;
++ mcf_edma_set_tcd_params(DMA_RX_TCD0,
++ saddr0,
++ (u32)dma_private->dma_buf_next,
++ attr,
++ 0, /* source offset */
++ nbyte,
++ 0, /* slast */
++ major_loops, /* citer */
++ major_loops, /* biter */
++ doffset,
++ sga0,
++ 1, /* major_int */
++ 0); /* enable dma request after */
++
++ mcf_edma_set_tcd_params(DMA_RX_TCD1,
++ saddr1,
++ (u32)dma_private->dma_buf_next + offset,
++ attr,
++ 0, /* source offset */
++ nbyte,
++ 0, /* slast */
++ major_loops, /* citer */
++ major_loops, /* biter */
++ doffset,
++ sga1,
++ 0, /* major_int */
++ 0); /* enable dma request after */
++
++ while (!(MCF_EDMA_TCD_CSR(DMA_RX_TCD0) & MCF_EDMA_TCD_CSR_E_SG))
++ MCF_EDMA_TCD_CSR(DMA_RX_TCD0) |= MCF_EDMA_TCD_CSR_E_SG;
++ while (!(MCF_EDMA_TCD_CSR(DMA_RX_TCD1) & MCF_EDMA_TCD_CSR_E_SG))
++ MCF_EDMA_TCD_CSR(DMA_RX_TCD1) |= MCF_EDMA_TCD_CSR_E_SG;
++
++ for (i = 0; i < NUM_TCDS; i++) {
++ dma_private->dma_buf_next += size;
++ if (dma_private->dma_buf_next >= dma_private->dma_buf_end)
++ dma_private->dma_buf_next = dma_private->dma_buf_phys;
++ sga0 = (u32)dma_private->tcd_buf_phys +
++ ((i+1)%NUM_TCDS) * sizeof(struct dma_tcd);
++ sga1 = (u32)dma_private->tcd_buf_phys +
++ ((i+1)%NUM_TCDS + 4) * sizeof(struct dma_tcd);
++ fill_tcd_params((u32)&dma_private->tcd0[i],
++ saddr0,
++ (u32)dma_private->dma_buf_next,
++ attr,
++ 0, /* source offset */
++ nbyte,
++ 0, /* slast */
++ major_loops, /* citer */
++ major_loops, /* biter */
++ doffset,
++ sga0,
++ 1, /* major_int */
++ 0, /* enable dma request after */
++ 1); /* enable scatter/gather */
++ fill_tcd_params((u32)&dma_private->tcd1[i],
++ saddr1,
++ (u32)dma_private->dma_buf_next + offset,
++ attr,
++ 0, /* source offset */
++ nbyte,
++ 0, /* slast */
++ major_loops, /* citer */
++ major_loops, /* biter */
++ doffset,
++ sga1,
++ 0, /* major_int */
++ 0, /* enable dma request after */
++ 1); /* enable scatter/gather */
++ }
++ return 0;
++}
++
++static inline void ssi_audio_enable_ssi_playback(void)
++{
++ MCF_SSI_CR |= MCF_SSI_CR_SSI_EN | MCF_SSI_CR_TE;
++}
++
++static inline void ssi_audio_enable_ssi_capture(void)
++{
++ MCF_SSI_CR |= MCF_SSI_CR_SSI_EN | MCF_SSI_CR_RE;
++}
++
++static inline void ssi_audio_disable_ssi(void)
++{
++ MCF_SSI_CR &= ~(MCF_SSI_CR_TE | MCF_SSI_CR_RE | MCF_SSI_CR_SSI_EN);
++}
++
++static inline void ssi_audio_disable_ssi_playback(void)
++{
++ MCF_SSI_CR &= ~MCF_SSI_CR_TE;
++}
++
++static inline void ssi_audio_disable_ssi_capture(void)
++{
++ MCF_SSI_CR &= ~MCF_SSI_CR_RE;
++}
++
++static irqreturn_t ssi_audio_dma_playback_handler(int channel, void *dev_id)
++{
++ struct snd_pcm_substream *substream;
++ struct snd_pcm_runtime *runtime;
++
++ substream = (struct snd_pcm_substream *)dev_id;
++ runtime = substream->runtime;
++
++ /* inform ALSA middle layer about transfer status */
++ snd_pcm_period_elapsed(substream);
++ mcf_edma_confirm_interrupt_handled(DMA_TX_TCD0);
++ mcf_edma_confirm_interrupt_handled(DMA_TX_TCD1);
++
++ return IRQ_HANDLED;
++}
++
++static irqreturn_t ssi_audio_dma_capture_handler(int channel, void *dev_id)
++{
++ struct snd_pcm_substream *substream;
++ struct snd_pcm_runtime *runtime;
++
++ substream = (struct snd_pcm_substream *)dev_id;
++ runtime = substream->runtime;
++
++ /* inform ALSA middle layer about transfer status */
++ snd_pcm_period_elapsed(substream);
++ mcf_edma_confirm_interrupt_handled(DMA_RX_TCD0);
++ mcf_edma_confirm_interrupt_handled(DMA_RX_TCD1);
++
++ return IRQ_HANDLED;
++}
++
++int ssi_audio_dma_request_playback_channel(struct snd_pcm_substream *substream)
++{
++ int err;
++ struct chip_spec *chip = snd_pcm_substream_chip(substream);
++
++ /* request eDMA channel */
++ err = mcf_edma_request_channel(DMA_TX_TCD0,
++ ssi_audio_dma_playback_handler,
++ NULL,
++ MCF_SSI_AUDIO_IRQ_LEVEL,
++ substream,
++ &(chip->audio_device->lock),
++ id);
++ if (err < 0)
++ return err;
++ err = mcf_edma_request_channel(DMA_TX_TCD1,
++ ssi_audio_dma_playback_handler,
++ NULL,
++ MCF_SSI_AUDIO_IRQ_LEVEL,
++ substream,
++ &(chip->audio_device->lock),
++ id);
++ return err;
++}
++
++int ssi_audio_dma_request_capture_channel(struct snd_pcm_substream *substream)
++{
++ int err;
++ struct chip_spec *chip = snd_pcm_substream_chip(substream);
++
++ /* request 2 eDMA channels for two fifo */
++ err = mcf_edma_request_channel(DMA_RX_TCD0,
++ ssi_audio_dma_capture_handler,
++ NULL,
++ MCF_SSI_AUDIO_IRQ_LEVEL,
++ substream,
++ &(chip->audio_device->lock),
++ id);
++ if (err < 0)
++ return err;
++ err = mcf_edma_request_channel(DMA_RX_TCD1,
++ ssi_audio_dma_capture_handler,
++ NULL,
++ MCF_SSI_AUDIO_IRQ_LEVEL,
++ substream,
++ &(chip->audio_device->lock),
++ id);
++ return err;
++}
++
++static inline void ssi_audio_init_dma(void)
++{
++ /* SSI DMA Signals mapped to DMA request */
++ MCF_CCM_MISCCR &= ~MCF_CCM_MISCCR_TIM_DMA;
++}
++
++static void ssi_audio_adjust_codec_speed(struct snd_pcm_substream *substream)
++{
++ ssi_audio_disable_ssi();
++
++ if (substream->runtime->format == SNDRV_PCM_FORMAT_S16_BE) {
++ MCF_SSI_CCR = MCF_SSI_CCR_WL(7) | /* 16 bit word length */
++ MCF_SSI_CCR_DC(1); /* Frame rate divider */
++ }
++
++ switch (substream->runtime->rate) {
++ case 8000:
++#if defined(CONFIG_M532x) || defined(CONFIG_M537x)
++ MCF_CCM_CDR = (MCF_CCM_CDR | MCF_CCM_CDR_SSIDIV(0x20))
++ | MCF_CCM_CDR_SSIDIV(MCF_SSI_AUDIO_SSDIV_VALUE_1);
++#else
++ MCF_CCM_CDR = (MCF_CCM_CDR & ~MCF_CCM_CDR_SSIDIV(0xFF)) |
++ MCF_CCM_CDR_SSIDIV(MCF_SSI_AUDIO_SSDIV_VALUE_1);
++#endif
++ MCF_SSI_CCR |= MCF_SSI_CCR_PM(11);
++ mcf_codec_spi_write(TLV320AIC23_CODEC_SAMPLE_RATE_REG,
++ TLV320AIC23_CODEC_SAMPLERATE_REG_8KHZ);
++ break;
++ case 11000:
++ case 11025:
++#if defined(CONFIG_M532x) || defined(CONFIG_M537x)
++ MCF_CCM_CDR = (MCF_CCM_CDR & ~MCF_CCM_CDR_SSIDIV(0x3F)) |
++ MCF_CCM_CDR_SSIDIV(0x2B);
++ MCF_SSI_CCR |= MCF_SSI_CCR_PM(11);
++#else
++ MCF_CCM_CDR = (MCF_CCM_CDR & ~MCF_CCM_CDR_SSIDIV(0xFF)) |
++ MCF_CCM_CDR_SSIDIV(MCF_SSI_AUDIO_SSDIV_VALUE_3);
++ MCF_SSI_CCR |= MCF_SSI_CCR_PM(9);
++#endif
++ mcf_codec_spi_write(TLV320AIC23_CODEC_SAMPLE_RATE_REG,
++ TLV320AIC23_CODEC_SAMPLERATE_REG_11KHZ);
++ break;
++ case 16000:
++#if defined(CONFIG_M532x) || defined(CONFIG_M537x)
++ MCF_CCM_CDR = (MCF_CCM_CDR | MCF_CCM_CDR_SSIDIV(0x20))
++ | MCF_CCM_CDR_SSIDIV(MCF_SSI_AUDIO_SSDIV_VALUE_1);
++#else
++ MCF_CCM_CDR = (MCF_CCM_CDR & ~MCF_CCM_CDR_SSIDIV(0xFF)) |
++ MCF_CCM_CDR_SSIDIV(MCF_SSI_AUDIO_SSDIV_VALUE_1);
++#endif
++ MCF_SSI_CCR |= MCF_SSI_CCR_PM(5);
++ mcf_codec_spi_write(TLV320AIC23_CODEC_SAMPLE_RATE_REG,
++ TLV320AIC23_CODEC_SAMPLERATE_REG_16KHZ);
++ break;
++ case 22000:
++ case 22050:
++#if defined(CONFIG_M532x) || defined(CONFIG_M537x)
++ MCF_CCM_CDR = (MCF_CCM_CDR & ~MCF_CCM_CDR_SSIDIV(0x3F)) |
++ MCF_CCM_CDR_SSIDIV(0x2B);
++ MCF_SSI_CCR |= MCF_SSI_CCR_PM(5);
++#else
++ MCF_CCM_CDR = (MCF_CCM_CDR & ~MCF_CCM_CDR_SSIDIV(0xFF)) |
++ MCF_CCM_CDR_SSIDIV(MCF_SSI_AUDIO_SSDIV_VALUE_3);
++ MCF_SSI_CCR |= MCF_SSI_CCR_PM(4);
++#endif
++ mcf_codec_spi_write(TLV320AIC23_CODEC_SAMPLE_RATE_REG,
++ TLV320AIC23_CODEC_SAMPLERATE_REG_22KHZ);
++ break;
++ case 48000:
++#if defined(CONFIG_M532x) || defined(CONFIG_M537x)
++ MCF_CCM_CDR = (MCF_CCM_CDR & ~MCF_CCM_CDR_SSIDIV(0x3F)) |
++ MCF_CCM_CDR_SSIDIV(MCF_SSI_AUDIO_SSDIV_VALUE_4);
++ MCF_SSI_CCR |= MCF_SSI_CCR_PM(3);
++#else
++ MCF_CCM_CDR = (MCF_CCM_CDR & ~MCF_CCM_CDR_SSIDIV(0xFF)) |
++ MCF_CCM_CDR_SSIDIV(MCF_SSI_AUDIO_SSDIV_VALUE_1);
++ MCF_SSI_CCR |= MCF_SSI_CCR_PM(1);
++#endif
++ mcf_codec_spi_write(TLV320AIC23_CODEC_SAMPLE_RATE_REG,
++ TLV320AIC23_CODEC_SAMPLERATE_REG_48KHZ);
++ break;
++ case 44000:
++ case 44100:
++ default:
++#if defined(CONFIG_M532x) || defined(CONFIG_M537x)
++ MCF_CCM_CDR = (MCF_CCM_CDR & ~MCF_CCM_CDR_SSIDIV(0x3F)) |
++ MCF_CCM_CDR_SSIDIV(0x2B);
++#else
++ MCF_CCM_CDR = (MCF_CCM_CDR & ~MCF_CCM_CDR_SSIDIV(0xFF)) |
++ MCF_CCM_CDR_SSIDIV(MCF_SSI_AUDIO_SSDIV_VALUE_2);
++#endif
++ MCF_SSI_CCR |= MCF_SSI_CCR_PM(2);
++ mcf_codec_spi_write(TLV320AIC23_CODEC_SAMPLE_RATE_REG,
++ TLV320AIC23_CODEC_SAMPLERATE_REG_44KHZ);
++ break;
++ }
++ DBG("MCF_CCM_CDR = 0x%x, MCF_SSI_CCR = 0x%x.\n",
++ MCF_CCM_CDR, MCF_SSI_CCR);
++}
++
++static void ssi_audio_codec_reset(void)
++{
++ mcf_codec_spi_write(CODEC_RESET_REG, 0); /* reset the audio chip */
++ udelay(2500); /* wait for reset */
++}
++
++static void
++ssi_audio_init_codec_for_playback(struct snd_pcm_substream *substream)
++{
++ mcf_codec_spi_write(CODEC_LEFT_IN_REG, g_lineinvol);
++ mcf_codec_spi_write(CODEC_RIGHT_IN_REG, g_lineinvol);
++ mcf_codec_spi_write(CODEC_POWER_DOWN_REG, 0x060);
++ mcf_codec_spi_write(CODEC_DIGITAL_IF_FMT_REG, 0x02);
++ mcf_codec_spi_write(CODEC_DIGITAL_APATH_REG, 0x006);
++ mcf_codec_spi_write(CODEC_DIGITAL_IF_ACT_REG, 0x001);
++ mcf_codec_spi_write(CODEC_ANALOG_APATH_REG, g_analogpath);
++ mcf_codec_spi_write(CODEC_LEFT_HP_VOL_REG, g_mastervol);
++ mcf_codec_spi_write(CODEC_RIGHT_HP_VOL_REG, g_mastervol);
++}
++
++static void
++ssi_audio_init_codec_for_capture(struct snd_pcm_substream *substream)
++{
++ mcf_codec_spi_write(CODEC_LEFT_IN_REG, g_lineinvol);
++ mcf_codec_spi_write(CODEC_RIGHT_IN_REG, g_lineinvol);
++ mcf_codec_spi_write(CODEC_POWER_DOWN_REG, 0x060);
++ mcf_codec_spi_write(CODEC_DIGITAL_IF_FMT_REG, 0x02);
++ mcf_codec_spi_write(CODEC_DIGITAL_APATH_REG, 0x006);
++ mcf_codec_spi_write(CODEC_DIGITAL_IF_ACT_REG, 0x001);
++ mcf_codec_spi_write(CODEC_ANALOG_APATH_REG, g_analogpath);
++ mcf_codec_spi_write(CODEC_LEFT_HP_VOL_REG, g_mastervol);
++ mcf_codec_spi_write(CODEC_RIGHT_HP_VOL_REG, g_mastervol);
++}
++
++static void ssi_audio_chip_init(void)
++{
++ int chip_initialized = 0;
++ if (chip_initialized == 1)
++ return;
++
++ ssi_audio_init_dma();
++ /* Enable the SSI pins */
++#if defined(CONFIG_M5227x)
++ MCF_GPIO_PAR_UART = (MCF_GPIO_PAR_UART
++ &~MCF_GPIO_PAR_UART_PAR_U1TXD(0xF)
++ &~MCF_GPIO_PAR_UART_PAR_U1RXD(0xF)
++ &~MCF_GPIO_PAR_UART_PAR_U1RTS(0xF)
++ &~MCF_GPIO_PAR_UART_PAR_U1CTS(0xF))
++ | MCF_GPIO_PAR_UART_PAR_U1CTS_SSI_BCLK
++ | MCF_GPIO_PAR_UART_PAR_U1RTS_SSI_FS
++ | MCF_GPIO_PAR_UART_PAR_U1RXD_SSI_RXD
++ | MCF_GPIO_PAR_UART_PAR_U1TXD_SSI_TXD;
++
++ MCF_GPIO_PAR_TIMER = (MCF_GPIO_PAR_TIMER
++ &~MCF_GPIO_PAR_TIMER_PAR_T3IN(0xF))
++ | MCF_GPIO_PAR_TIMER_PAR_T3IN_SSI_MCLK;
++#endif
++#if defined(CONFIG_M532x)
++ MCF_GPIO_PAR_SSI = (0
++ | MCF_GPIO_PAR_SSI_PAR_MCLK
++ | MCF_GPIO_PAR_SSI_PAR_TXD(3)
++ | MCF_GPIO_PAR_SSI_PAR_RXD(3)
++ | MCF_GPIO_PAR_SSI_PAR_FS(3)
++ | MCF_GPIO_PAR_SSI_PAR_BCLK(3));
++#endif
++#if defined(CONFIG_M537x)
++ MCF_GPIO_PAR_UART = (MCF_GPIO_PAR_UART
++ &~MCF_GPIO_PAR_UART_PAR_UTXD1(0xF)
++ &~MCF_GPIO_PAR_UART_PAR_URXD1(0xF)
++ &~MCF_GPIO_PAR_UART_PAR_URTS1(0xF)
++ &~MCF_GPIO_PAR_UART_PAR_UCTS1(0xF))
++ | MCF_GPIO_PAR_UART_PAR_UCTS1_SSI_BCLK
++ | MCF_GPIO_PAR_UART_PAR_URTS1_SSI_FS
++ | MCF_GPIO_PAR_UART_PAR_URXD1_SSI_RXD
++ | MCF_GPIO_PAR_UART_PAR_UTXD1_SSI_TXD;
++
++ MCF_GPIO_PAR_IRQ = MCF_GPIO_PAR_IRQ_PAR_IRQ4(1);
++#endif
++#if defined(CONFIG_M5301x)
++ MCF_GPIO_PAR_SSIH = (MCF_GPIO_PAR_SSIH_PAR_RXD_SSI_RXD |
++ MCF_GPIO_PAR_SSIH_PAR_TXD_SSI_TXD |
++ MCF_GPIO_PAR_SSIH_PAR_FS_SSI_FS |
++ MCF_GPIO_PAR_SSIH_PAR_MCLK_SSI_MCLK);
++ MCF_GPIO_PAR_SSIL = MCF_GPIO_PAR_SSIL_PAR_BCLK_SSI_BCLK;
++#endif
++#if defined(CONFIG_M5445X)
++ MCF_GPIO_PAR_SSI = (MCF_GPIO_PAR_SSI_MCLK |
++ MCF_GPIO_PAR_SSI_STXD_STXD |
++ MCF_GPIO_PAR_SSI_SRXD_SRXD |
++ MCF_GPIO_PAR_SSI_FS_FS |
++ MCF_GPIO_PAR_SSI_BCLK_BCLK);
++#endif
++ chip_initialized = 1;
++}
++
++static void ssi_audio_init_ssi_playback(void)
++{
++ /* Issue a SSI reset */
++ MCF_SSI_CR &= ~MCF_SSI_CR_SSI_EN;
++
++ /* SSI module uses internal CPU clock */
++ MCF_CCM_MISCCR |= MCF_CCM_MISCCR_SSI_SRC;
++#if defined(CONFIG_M5445X) || defined(CONFIG_M532x) || defined(CONFIG_M537x) \
++ || defined(CONFIG_M5227x)
++ MCF_CCM_MISCCR |= MCF_CCM_MISCCR_SSI_PUE | MCF_CCM_MISCCR_SSI_PUS;
++#endif
++#if defined(CONFIG_M5301x)
++ MCF_GPIO_PCRH |= MCF_GPIO_PCRH_SSI_PUS | MCF_GPIO_PCRH_SSI_PUE;
++#endif
++ MCF_SSI_CR = MCF_SSI_CR_CIS |
++ MCF_SSI_CR_TCH | /* Enable two channel mode */
++ MCF_SSI_CR_MCE | /* clock out on SSI_MCLK pin */
++ MCF_SSI_CR_I2S_MASTER | /* I2S master mode */
++ MCF_SSI_CR_SYN | /* Enable synchronous mode */
++ MCF_SSI_CR_NET; /* Auto set by I2S Master */
++
++ MCF_SSI_TCR = 0 |
++ /* internally generated bit clock */
++ MCF_SSI_TCR_TXDIR |
++ /* internally generated frame sync */
++ MCF_SSI_TCR_TFDIR |
++ /* Clock data on falling edge of bit clock */
++ MCF_SSI_TCR_TSCKP |
++ /* Frame sync active low */
++ MCF_SSI_TCR_TFSI |
++ /* TX frame sync 1 bit before data */
++ MCF_SSI_TCR_TEFS |
++ /* TX FIFO 0 enabled */
++ MCF_SSI_TCR_TFEN0 |
++ /* TX FIFO 1 enabled */
++ MCF_SSI_TCR_TFEN1 |
++ MCF_SSI_TCR_TXBIT0;
++
++ MCF_SSI_FCSR = MCF_SSI_FCSR_TFWM0(TXFWM) | MCF_SSI_FCSR_TFWM1(TXFWM);
++
++ MCF_SSI_IER = MCF_SSI_IER_TDMAE | /* DMA request enabled */
++ MCF_SSI_IER_TFE0 |
++ MCF_SSI_IER_TFE1; /* set by reset actually*/
++}
++
++static void ssi_audio_init_ssi_capture(void)
++{
++ /* Issue a SSI reset */
++ MCF_SSI_CR &= ~MCF_SSI_CR_SSI_EN;
++
++ /* SSI module uses internal CPU clock */
++ MCF_CCM_MISCCR |= MCF_CCM_MISCCR_SSI_SRC;
++#if defined(CONFIG_M5445X) || defined(CONFIG_M532x) || defined(CONFIG_M537x) \
++ || defined(CONFIG_M5227x)
++ MCF_CCM_MISCCR |= MCF_CCM_MISCCR_SSI_PUE | MCF_CCM_MISCCR_SSI_PUS;
++#endif
++#if defined(CONFIG_M5301x)
++ MCF_GPIO_PCRH |= MCF_GPIO_PCRH_SSI_PUS | MCF_GPIO_PCRH_SSI_PUE;
++#endif
++ MCF_SSI_CR = MCF_SSI_CR_CIS |
++ MCF_SSI_CR_TCH | /* Enable two channel mode */
++ MCF_SSI_CR_MCE | /* clock out on SSI_MCLK pin */
++ MCF_SSI_CR_I2S_MASTER | /* I2S master mode */
++ MCF_SSI_CR_SYN | /* Enable synchronous mode */
++ MCF_SSI_CR_NET; /* Auto set by I2S Master */
++
++ MCF_SSI_TCR = 0 |
++ /* internally generated bit clock */
++ MCF_SSI_TCR_TXDIR |
++ /* internally generated frame sync */
++ MCF_SSI_TCR_TFDIR |
++ /* Clock data on falling edge of bit clock */
++ MCF_SSI_TCR_TSCKP |
++ /* Frame sync active low */
++ MCF_SSI_TCR_TFSI |
++ /* TX frame sync 1 bit before data */
++ MCF_SSI_TCR_TEFS |
++ /* TX FIFO 0 enabled */
++ MCF_SSI_TCR_TFEN0 |
++ /* TX FIFO 1 enabled */
++ MCF_SSI_TCR_TFEN1 |
++ MCF_SSI_TCR_TXBIT0;
++
++ MCF_SSI_RCR = 0 |
++ /* Clock data on rising edge of bit clock */
++ MCF_SSI_RCR_RSCKP |
++ /* Frame sync active low */
++ MCF_SSI_RCR_RFSI |
++ /* RX frame sync 1 bit before data */
++ MCF_SSI_RCR_REFS |
++ /* RX FIFO 0 enabled */
++ MCF_SSI_RCR_RFEN0 |
++ /* RX FIFO 1 enabled */
++ MCF_SSI_RCR_RFEN1 |
++ MCF_SSI_RCR_RXBIT0; /* Auto set by I2S Master */
++
++ MCF_SSI_FCSR = MCF_SSI_FCSR_RFWM0(RXFWM) | MCF_SSI_FCSR_RFWM1(RXFWM);
++
++ /* interrupts */
++ MCF_SSI_IER = MCF_SSI_IER_RDMAE | /* DMA request enabled */
++ MCF_SSI_IER_RFF0 | /* rx FIFO 0 full */
++ MCF_SSI_IER_RFF1; /* rx FIFO 1 full */
++}
++
++static int snd_coldfire_playback_open(struct snd_pcm_substream *substream)
++{
++ int err;
++ struct chip_spec *chip = snd_pcm_substream_chip(substream);
++ struct snd_pcm_runtime *runtime = substream->runtime;
++ struct dma_private *dma_private;
++ dma_addr_t tcd_buf_phys;
++
++ runtime->hw = snd_coldfire_playback_hw;
++ err = snd_pcm_hw_constraint_integer(runtime,
++ SNDRV_PCM_HW_PARAM_PERIODS);
++ if (err < 0) {
++ printk(KERN_ERR "invalid buffer size\n");
++ return err;
++ }
++ /* to make sure period_bytes is the multiple of size of minor loops */
++ err = snd_pcm_hw_constraint_step(runtime, 0,
++ SNDRV_PCM_HW_PARAM_PERIOD_BYTES,
++ HW_PERIODS_BYTES_STEP);
++ if (err < 0) {
++ printk(KERN_ERR "Error setting period_bytes step, "
++ "err=%d\n", err);
++ return err;
++ }
++ err = snd_pcm_hw_constraint_list(substream->runtime, 0,
++ SNDRV_PCM_HW_PARAM_RATE,
++ &constraints_rates);
++ if (err < 0) {
++ printk(KERN_ERR "Error setting rate constraints, "
++ "err=%d\n", err);
++ return err;
++ }
++ ssi_audio_chip_init();
++ ssi_audio_init_ssi_playback();
++ ssi_audio_init_codec_for_playback(substream);
++ err = ssi_audio_dma_request_playback_channel(substream);
++ if (err < 0) {
++ printk(KERN_ERR "Error requesting dma channel, err=%d\n", err);
++ return err;
++ }
++
++ dma_private = dma_alloc_coherent(substream->pcm->dev,
++ sizeof(struct dma_private), &tcd_buf_phys, GFP_KERNEL);
++
++ if (!dma_private) {
++ dev_err(substream->pcm->card->dev,
++ "can't allocate DMA private data\n");
++ return -ENOMEM;
++ }
++
++ dma_private->tcd_buf_phys = tcd_buf_phys;
++ runtime->private_data = dma_private;
++
++ chip->offset = 0;
++ g_tx_dmaing = 0;
++ return 0;
++}
++
++static int snd_coldfire_capture_open(struct snd_pcm_substream *substream)
++{
++ int err;
++ struct chip_spec *chip = snd_pcm_substream_chip(substream);
++ struct snd_pcm_runtime *runtime = substream->runtime;
++ struct dma_private *dma_private;
++ dma_addr_t tcd_buf_phys;
++
++ runtime->hw = snd_coldfire_capture_hw;
++
++ err = snd_pcm_hw_constraint_integer(runtime,
++ SNDRV_PCM_HW_PARAM_PERIODS);
++ if (err < 0) {
++ printk(KERN_ERR "invalid buffer size\n");
++ return err;
++ }
++ /* to make sure period_bytes is the multiple of size of minor loops */
++ err = snd_pcm_hw_constraint_step(runtime, 0,
++ SNDRV_PCM_HW_PARAM_PERIOD_BYTES,
++ HW_PERIODS_BYTES_STEP);
++ if (err < 0) {
++ printk(KERN_ERR "Error setting period_bytes step, "
++ "err=%d\n", err);
++ return err;
++ }
++ err = snd_pcm_hw_constraint_list(substream->runtime, 0,
++ SNDRV_PCM_HW_PARAM_RATE,
++ &constraints_rates);
++ if (err < 0) {
++ printk(KERN_ERR "Error setting pcm_hw_constraint_list, "
++ "err=%d\n", err);
++ return err;
++ }
++
++ ssi_audio_chip_init();
++ ssi_audio_init_ssi_capture();
++ ssi_audio_init_codec_for_capture(substream);
++ err = ssi_audio_dma_request_capture_channel(substream);
++ if (err < 0) {
++ printk(KERN_ERR "Error requesting dma channel, err=%d\n", err);
++ return err;
++ }
++
++ dma_private = dma_alloc_coherent(substream->pcm->dev,
++ sizeof(struct dma_private), &tcd_buf_phys, GFP_KERNEL);
++
++ if (!dma_private) {
++ dev_err(substream->pcm->card->dev,
++ "can't allocate DMA private data\n");
++ return -ENOMEM;
++ }
++ dma_private->tcd_buf_phys = tcd_buf_phys;
++ dma_private->dma_buf_phys = substream->dma_buffer.addr;
++
++ runtime->private_data = dma_private;
++
++ chip->offset = 0;
++ g_rx_dmaing = 0;
++ return 0;
++}
++
++static int snd_coldfire_playback_close(struct snd_pcm_substream *substream)
++{
++ struct dma_private *dma_private = substream->runtime->private_data;
++
++ ssi_audio_dma_playback_stop();
++ mcf_edma_free_channel(DMA_TX_TCD0, substream);
++ mcf_edma_free_channel(DMA_TX_TCD1, substream);
++ if (dma_private) {
++ dma_free_coherent(substream->pcm->dev,
++ sizeof(struct dma_private),
++ dma_private, dma_private->tcd_buf_phys);
++ substream->runtime->private_data = NULL;
++ }
++ ssi_audio_disable_ssi();
++ return 0;
++}
++
++static int snd_coldfire_capture_close(struct snd_pcm_substream *substream)
++{
++ struct dma_private *dma_private = substream->runtime->private_data;
++
++ ssi_audio_dma_capture_stop();
++ mcf_edma_free_channel(DMA_RX_TCD0, substream);
++ mcf_edma_free_channel(DMA_RX_TCD1, substream);
++ /* Deallocate the fsl_dma_private structure */
++ if (dma_private) {
++ dma_free_coherent(substream->pcm->dev,
++ sizeof(struct dma_private),
++ dma_private, dma_private->tcd_buf_phys);
++ substream->runtime->private_data = NULL;
++ }
++ ssi_audio_disable_ssi();
++ return 0;
++}
++
++static int snd_coldfire_pcm_hw_params(struct snd_pcm_substream *substream,
++ struct snd_pcm_hw_params *hw_params)
++{
++ int err;
++
++ /* set runtime buffer */
++ err = snd_pcm_lib_malloc_pages(
++ substream, params_buffer_bytes(hw_params));
++ if (err < 0)
++ printk(KERN_ERR "Error allocating pages, err=%d\n", err);
++ return err;
++}
++
++static int snd_coldfire_pcm_hw_free(struct snd_pcm_substream *substream)
++{
++ /* free the memory if was newly allocated */
++ return snd_pcm_lib_free_pages(substream);
++}
++
++static int
++snd_coldfire_pcm_playback_prepare(struct snd_pcm_substream *substream)
++{
++ int err;
++
++ if (g_tx_dmaing == 1)
++ return 0;
++
++ ssi_audio_adjust_codec_speed(substream);
++ err = ssi_audio_dma_playback_config(substream);
++ if (err < 0) {
++ printk(KERN_ERR "Error configuring playback, "
++ "err=%d\n", err);
++ return err;
++ }
++
++ ssi_audio_dma_playback_start();
++ return 0;
++}
++
++static int snd_coldfire_pcm_capture_prepare(struct snd_pcm_substream *substream)
++{
++ int err;
++
++ if (g_rx_dmaing == 1)
++ return 0;
++
++ ssi_audio_adjust_codec_speed(substream);
++ err = ssi_audio_dma_capture_config(substream);
++ if (err < 0) {
++ printk(KERN_ERR "Error configuring capture, "
++ "err=%d\n", err);
++ return err;
++ }
++ ssi_audio_dma_capture_start();
++
++ return 0;
++}
++
++static int
++snd_coldfire_pcm_playback_trigger(struct snd_pcm_substream *substream, int cmd)
++{
++ switch (cmd) {
++ case SNDRV_PCM_TRIGGER_START:
++ ssi_audio_enable_ssi_playback();
++ break;
++ case SNDRV_PCM_TRIGGER_STOP:
++ ssi_audio_disable_ssi_playback();
++ break;
++ default:
++ printk(KERN_ERR "Unsupported trigger command, cmd=%d\n", cmd);
++ return -EINVAL;
++ }
++
++ return 0;
++}
++
++static int
++snd_coldfire_pcm_capture_trigger(struct snd_pcm_substream *substream, int cmd)
++{
++ switch (cmd) {
++ case SNDRV_PCM_TRIGGER_START:
++ ssi_audio_enable_ssi_capture();
++ break;
++ case SNDRV_PCM_TRIGGER_STOP:
++ ssi_audio_disable_ssi_capture();
++ break;
++ default:
++ printk(KERN_ERR "Unsupported trigger command, cmd=%d\n", cmd);
++ return -EINVAL;
++ }
++
++ return 0;
++}
++
++static snd_pcm_uframes_t
++snd_coldfire_pcm_playback_pointer(struct snd_pcm_substream *substream)
++{
++ struct snd_pcm_runtime *runtime = substream->runtime;
++ struct dma_private *dma_private = runtime->private_data;
++ snd_pcm_uframes_t pointer;
++ u32 offset;
++
++ offset = (u32)(MCF_EDMA_TCD_SADDR(DMA_TX_TCD0) -
++ dma_private->dma_buf_phys);
++ if (runtime->format == SNDRV_PCM_FORMAT_S16_BE)
++ pointer = offset / (runtime->channels == 1 ? 2 : 4);
++ else
++ pointer = 0;
++
++ return pointer;
++}
++
++static snd_pcm_uframes_t
++snd_coldfire_pcm_capture_pointer(struct snd_pcm_substream *substream)
++{
++ struct snd_pcm_runtime *runtime = substream->runtime;
++ struct dma_private *dma_private = runtime->private_data;
++ snd_pcm_uframes_t pointer;
++ u32 offset;
++
++ offset = (u32)(MCF_EDMA_TCD_DADDR(DMA_RX_TCD0) -
++ dma_private->dma_buf_phys);
++ if (runtime->format == SNDRV_PCM_FORMAT_S16_BE)
++ pointer = offset / (runtime->channels == 1 ? 2 : 4);
++ else
++ pointer = 0;
++
++ return pointer;
++}
++
++static struct snd_pcm_ops snd_coldfire_playback_ops = {
++ .open = snd_coldfire_playback_open,
++ .close = snd_coldfire_playback_close,
++ .ioctl = snd_pcm_lib_ioctl,
++ .hw_params = snd_coldfire_pcm_hw_params,
++ .hw_free = snd_coldfire_pcm_hw_free,
++ .prepare = snd_coldfire_pcm_playback_prepare,
++ .trigger = snd_coldfire_pcm_playback_trigger,
++ .pointer = snd_coldfire_pcm_playback_pointer,
++};
++
++static struct snd_pcm_ops snd_coldfire_capture_ops = {
++ .open = snd_coldfire_capture_open,
++ .close = snd_coldfire_capture_close,
++ .ioctl = snd_pcm_lib_ioctl,
++ .hw_params = snd_coldfire_pcm_hw_params,
++ .hw_free = snd_coldfire_pcm_hw_free,
++ .prepare = snd_coldfire_pcm_capture_prepare,
++ .trigger = snd_coldfire_pcm_capture_trigger,
++ .pointer = snd_coldfire_pcm_capture_pointer,
++};
++
++static int snd_coldfire_new_pcm(struct chip_spec *chip)
++{
++ struct snd_pcm *pcm;
++ int err;
++
++ err = snd_pcm_new(chip->card, "coldfire", 0, 1, 1,
++ &pcm);
++ if (err < 0) {
++ printk(KERN_ERR "Error creating new pcm, err=%d\n", err);
++ return err;
++ }
++ pcm->private_data = chip;
++ strncpy(pcm->name, SOUND_CARD_NAME, sizeof(pcm->name));
++ chip->pcm = pcm;
++ pcm->info_flags = 0;
++
++ /* set operators */
++ snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
++ &snd_coldfire_playback_ops);
++ snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
++ &snd_coldfire_capture_ops);
++ /* pre-allocation of buffers */
++ err = snd_pcm_lib_preallocate_pages_for_all(
++ pcm,
++ SNDRV_DMA_TYPE_CONTINUOUS,
++ snd_dma_continuous_data(GFP_KERNEL),
++ MAX_BUFFER_SIZE,
++ MAX_BUFFER_SIZE);
++
++ if (!pcm->streams[0].substream->dma_buffer.addr)
++ pcm->streams[0].substream->dma_buffer.addr =
++ virt_to_phys(pcm->streams[0].substream->dma_buffer.area);
++ if (!pcm->streams[1].substream->dma_buffer.addr)
++ pcm->streams[1].substream->dma_buffer.addr =
++ virt_to_phys(pcm->streams[1].substream->dma_buffer.area);
++
++ if (err) {
++ printk(KERN_ERR
++ "Can't pre-allocate DMA buffer (size=%u)\n",
++ MAX_BUFFER_SIZE);
++ return -ENOMEM;
++ }
++
++ chip->audio_device =
++ kmalloc(sizeof(struct tlv320a_audio_device), GFP_DMA);
++
++ if (!chip->audio_device) {
++ snd_pcm_lib_preallocate_free_for_all(pcm);
++ printk(KERN_ERR
++ "Can't allocate buffer for audio device\n");
++ return -ENOMEM;
++ }
++
++ return 0;
++}
++
++static int tlv320a_set_out_volume(unsigned char value)
++{
++ unsigned char data;
++
++ if (value > TLV320A_VOL_MAX)
++ data = TLV320A_VOL_MAX;
++ else
++ data = value;
++
++ if (mcf_codec_spi_write(CODEC_LEFT_HP_VOL_REG, data) < 0)
++ return -EINVAL;
++
++ if (mcf_codec_spi_write(CODEC_RIGHT_HP_VOL_REG, data) < 0)
++ return -EINVAL;
++
++ return 0;
++}
++
++static int tlv320a_info_out_volume(struct snd_kcontrol *kcontrol,
++ struct snd_ctl_elem_info *uinfo)
++{
++ uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
++ uinfo->count = 1;
++ uinfo->value.integer.min = TLV320A_VOL_MIN;
++ uinfo->value.integer.max = TLV320A_VOL_MAX;
++ return 0;
++}
++
++static int tlv320a_get_out_volume(struct snd_kcontrol *kcontrol,
++ struct snd_ctl_elem_value *ucontrol)
++{
++ ucontrol->value.integer.value[0] = g_mastervol;
++ return 0;
++}
++
++static int tlv320a_put_out_volume(struct snd_kcontrol *kcontrol,
++ struct snd_ctl_elem_value *ucontrol)
++{
++ unsigned char vol;
++ int change;
++
++ vol = ucontrol->value.integer.value[0];
++
++ if (vol > TLV320A_VOL_MAX)
++ return -EINVAL;
++
++ change = (g_mastervol != vol);
++ if (change) {
++ g_mastervol = vol;
++ tlv320a_set_out_volume(vol);
++ }
++ return change;
++}
++
++static int tlv320a_set_linein_volume(unsigned char value)
++{
++ unsigned char data;
++
++ if (value > TLV320A_LINEIN_MAX)
++ data = TLV320A_LINEIN_MAX;
++ else
++ data = value;
++
++ if (mcf_codec_spi_write(CODEC_LEFT_IN_REG, data) < 0)
++ return -EINVAL;
++
++ if (mcf_codec_spi_write(CODEC_RIGHT_IN_REG, data) < 0)
++ return -EINVAL;
++
++ return 0;
++}
++
++static int tlv320a_info_linein_volume(struct snd_kcontrol *kcontrol,
++ struct snd_ctl_elem_info *uinfo)
++{
++ uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
++ uinfo->count = 1;
++ uinfo->value.integer.min = 0;
++ uinfo->value.integer.max = TLV320A_LINEIN_MAX;
++ return 0;
++}
++
++static int tlv320a_get_linein_volume(struct snd_kcontrol *kcontrol,
++ struct snd_ctl_elem_value *ucontrol)
++{
++ ucontrol->value.integer.value[0] = g_lineinvol;
++ return 0;
++}
++
++static int tlv320a_put_linein_volume(struct snd_kcontrol *kcontrol,
++ struct snd_ctl_elem_value *ucontrol)
++{
++ unsigned char vol;
++ int change;
++
++ vol = ucontrol->value.integer.value[0];
++
++ if (vol > TLV320A_LINEIN_MAX)
++ return -EINVAL;
++
++ change = (g_lineinvol != vol);
++ if (change) {
++ g_lineinvol = vol;
++ tlv320a_set_linein_volume(vol);
++ }
++ return change;
++}
++
++#define tlv320a_info_mic_boost snd_ctl_boolean_mono_info
++static int tlv320a_get_mic_boost(struct snd_kcontrol *kcontrol,
++ struct snd_ctl_elem_value *ucontrol)
++{
++ ucontrol->value.integer.value[0] = ((g_analogpath & 0x1) == 1);
++ return 0;
++}
++
++static int tlv320a_put_mic_boost(struct snd_kcontrol *kcontrol,
++ struct snd_ctl_elem_value *ucontrol)
++{
++ int oldboost, newboost;
++ u8 data;
++ if (ucontrol->value.integer.value[0] == 1)
++ newboost = 1;
++ else
++ newboost = 0;
++ oldboost = g_analogpath & 0x1;
++
++ if (oldboost == newboost)
++ return 0;
++ data = (g_analogpath & 0xfe) | (newboost & 0x1);
++ if (mcf_codec_spi_write(CODEC_ANALOG_APATH_REG, data) < 0)
++ return -EINVAL;
++ g_analogpath = data;
++ return 1;
++}
++
++static int tlv320a_info_capture_source(struct snd_kcontrol *kcontrol,
++ struct snd_ctl_elem_info *uinfo)
++{
++ static char *texts[] = { "Line-In", "Microphone" };
++
++ uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
++ uinfo->count = 1;
++ uinfo->value.enumerated.items = 2;
++ if (uinfo->value.enumerated.item > 1)
++ uinfo->value.enumerated.item = 1;
++ strcpy(uinfo->value.enumerated.name,
++ texts[uinfo->value.enumerated.item]);
++ return 0;
++}
++
++static int tlv320a_get_capture_source(struct snd_kcontrol *kcontrol,
++ struct snd_ctl_elem_value *ucontrol)
++{
++
++ ucontrol->value.enumerated.item[0] = ((g_analogpath & 0x4) == 0x4);
++ return 0;
++}
++
++static int tlv320a_put_capture_source(struct snd_kcontrol *kcontrol,
++ struct snd_ctl_elem_value *ucontrol)
++{
++ int oldinput, newinput;
++ u8 data;
++
++ if (ucontrol->value.enumerated.item[0] > 1)
++ return -EINVAL;
++
++ oldinput = (g_analogpath & 0x4) ? INPUT_MICROPHONE : INPUT_LINEIN;
++
++ if (ucontrol->value.enumerated.item[0])
++ newinput = INPUT_MICROPHONE;
++ else
++ newinput = INPUT_LINEIN;
++ if (oldinput == newinput)
++ return 0;
++ data = (g_analogpath & 0xfb) |
++ (newinput == INPUT_MICROPHONE ? 0x4 : 0);
++ if (mcf_codec_spi_write(CODEC_ANALOG_APATH_REG, data) < 0)
++ return -EINVAL;
++ g_analogpath = data;
++ return 1;
++}
++
++static struct snd_kcontrol_new tlv320_mixer_out __devinitdata = {
++ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
++ .name = "play volume",
++ .index = 0,
++ .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
++ .info = tlv320a_info_out_volume,
++ .get = tlv320a_get_out_volume,
++ .put = tlv320a_put_out_volume,
++};
++
++static struct snd_kcontrol_new tlv320_mixer_linein __devinitdata = {
++ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
++ .name = "record volume",
++ .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
++ .info = tlv320a_info_linein_volume,
++ .get = tlv320a_get_linein_volume,
++ .put = tlv320a_put_linein_volume,
++};
++
++static struct snd_kcontrol_new tlv320_mixer_capture_source __devinitdata = {
++ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
++ .name = "record source",
++ .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
++ .info = tlv320a_info_capture_source,
++ .get = tlv320a_get_capture_source,
++ .put = tlv320a_put_capture_source,
++};
++
++static struct snd_kcontrol_new tlv320_mixer_mic_boost __devinitdata = {
++ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
++ .name = "mic Boost",
++ .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
++ .info = tlv320a_info_mic_boost,
++ .get = tlv320a_get_mic_boost,
++ .put = tlv320a_put_mic_boost,
++};
++
++static int __devinit coldfire_alsa_audio_probe(struct platform_device *dev)
++{
++ struct snd_card *card;
++ struct chip_spec *chip;
++ int err;
++
++ err = snd_card_create(-1, id, THIS_MODULE,
++ sizeof(struct chip_spec), &card);
++ if (err < 0)
++ return -ENOMEM;
++
++ chip = card->private_data;
++
++ chip->card = card;
++ card->dev = &dev->dev;
++
++ err = snd_coldfire_new_pcm(chip);
++ if (err < 0)
++ return -ENOMEM;
++
++ strcpy(card->driver, "coldfire");
++ strcpy(card->shortname, "Coldfire-TLV320A");
++ sprintf(card->longname, "Freescale Coldfire with TLV320A");
++
++ err = snd_card_register(card);
++ if (err == 0) {
++ pr_debug(KERN_INFO "Coldfire audio support initialized\n");
++ platform_set_drvdata(dev, card);
++ }
++
++ strcpy(chip->card->mixername, "TLV320A Volume");
++ err = snd_ctl_add(chip->card, snd_ctl_new1(&tlv320_mixer_out, chip));
++ if (err)
++ goto error;
++ err = snd_ctl_add(chip->card, snd_ctl_new1(&tlv320_mixer_linein, chip));
++ if (err)
++ goto error;
++ err = snd_ctl_add(chip->card,
++ snd_ctl_new1(&tlv320_mixer_capture_source,
++ chip));
++ if (err)
++ goto error;
++ err = snd_ctl_add(chip->card,
++ snd_ctl_new1(&tlv320_mixer_mic_boost,
++ chip));
++ if (err)
++ goto error;
++ g_mastervol = TLV320A_VOL_INIT;
++ g_lineinvol = TLV320A_LINEIN_INIT;
++ g_analogpath = TLV320A_ANALOGPATH_INIT;
++ ssi_audio_codec_reset();
++ return 0;
++error:
++ kfree(card->private_data);
++ snd_card_free(card);
++ platform_set_drvdata(dev, NULL);
++ return err;
++}
++
++static int coldfire_alsa_audio_remove(struct platform_device *dev)
++{
++ struct snd_card *card;
++
++ card = platform_get_drvdata(dev);
++ kfree(card->private_data);
++ snd_card_free(card);
++ platform_set_drvdata(dev, NULL);
++
++ return 0;
++}
++
++static struct platform_driver coldfire_alsa_audio_driver = {
++ .probe = coldfire_alsa_audio_probe,
++ .remove = coldfire_alsa_audio_remove,
++ .driver = {
++ .name = SOUND_CARD_NAME,
++ },
++};
++
++static int __init coldfire_alsa_audio_init(void)
++{
++ int err;
++ err = platform_driver_register(&coldfire_alsa_audio_driver);
++ if (err < 0)
++ return err;
++
++ device = platform_device_register_simple(SOUND_CARD_NAME, -1, NULL, 0);
++ if (!IS_ERR(device)) {
++ if (platform_get_drvdata(device))
++ return 0;
++ platform_device_unregister(device);
++ platform_driver_unregister(&coldfire_alsa_audio_driver);
++ err = -ENODEV;
++ } else
++ err = PTR_ERR(device);
++
++ platform_driver_unregister(&coldfire_alsa_audio_driver);
++ return err;
++}
++
++static void __exit coldfire_alsa_audio_exit(void)
++{
++ platform_device_unregister(device);
++ platform_driver_unregister(&coldfire_alsa_audio_driver);
++}
++
++module_init(coldfire_alsa_audio_init);
++module_exit(coldfire_alsa_audio_exit);
++
++MODULE_DESCRIPTION("Coldfire driver for ALSA");
++MODULE_LICENSE("GPL");
++MODULE_SUPPORTED_DEVICE("{{TLV320A}}");
++
++module_param(id, charp, 0444);
++MODULE_PARM_DESC(id, "ID string for Coldfire + TLV320A soundcard.");
+--- /dev/null
++++ b/sound/coldfire/snd-coldfire.h
+@@ -0,0 +1,15 @@
++/*
++ * linux/sound/coldfire/snd-coldfire.h
++ *
++ * Copyright (C) 2008-2011 Freescale Semiconductor, Inc. All Rights Reserved.
++ *
++ * ALSA driver for Coldfire SSI
++ *
++ * This 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.
++ */
++
++extern int mcf_codec_spi_write(u8 addr, u16 data);
++
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-14 16:04:05 +0000