Openwrt/target/linux/coldfire/patches/009-Add-ALSA-driver-for-MCF5445x.patch

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);
+