SAUCE: ENGR00139461-2 mxc alsa soc spdif driver

BugLink: http://bugs.launchpad.net/bugs/837155

S/PDIF tx and rx using ASoC layer.

Signed-off-by: Alan Tull <alan.tull@freescale.com>
Signed-off-by: Eric Miao <eric.miao@linaro.org>

12 files changed, 1753 insertions, 7 deletions

diff --git a/include/linux/fsl_devices.h b/include/linux/fsl_devices.h
index f82c91f8319..cb624eaff19 100644
--- a/include/linux/fsl_devices.h
+++ b/include/linux/fsl_devices.h
@@ -276,6 +276,17 @@ struct mxc_audio_platform_data {
 	void *priv;		/* used by board specific functions */
 };
 
+struct mxc_spdif_platform_data {
+	int spdif_tx;		/* S/PDIF tx enabled for this board */
+	int spdif_rx;		/* S/PDIF rx enabled for this board */
+	int spdif_clk_44100;	/* tx clk mux in SPDIF_REG_STC; -1 for none */
+	int spdif_clk_48000;	/* tx clk mux in SPDIF_REG_STC; -1 for none */
+	int spdif_clkid;	/* rx clk mux select in SPDIF_REG_SRPC */
+	struct clk *spdif_clk;
+	struct clk *spdif_core_clk;
+	struct clk *spdif_audio_clk;
+};
+
 /* Returns non-zero if the current suspend operation would
  * lead to a deep sleep (i.e. power removed from the core,
  * instead of just the clock).
diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index 665d9240c4a..26ad77b5760 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -211,6 +211,9 @@ config SND_SOC_MAX98095
 config SND_SOC_MAX9850
 	tristate
 
+config SND_SOC_MXC_SPDIF
+       tristate
+
 config SND_SOC_PCM3008
        tristate
 
diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile
index 5119a7e2c1a..e39b5548ac4 100644
--- a/sound/soc/codecs/Makefile
+++ b/sound/soc/codecs/Makefile
@@ -24,6 +24,7 @@ snd-soc-l3-objs := l3.o
 snd-soc-max98088-objs := max98088.o
 snd-soc-max98095-objs := max98095.o
 snd-soc-max9850-objs := max9850.o
+snd-soc-mxc-spdif-objs := mxc_spdif.o
 snd-soc-pcm3008-objs := pcm3008.o
 snd-soc-sgtl5000-objs := sgtl5000.o
 snd-soc-alc5623-objs := alc5623.o
@@ -122,6 +123,7 @@ obj-$(CONFIG_SND_SOC_JZ4740_CODEC)	+= snd-soc-jz4740-codec.o
 obj-$(CONFIG_SND_SOC_MAX98088)	+= snd-soc-max98088.o
 obj-$(CONFIG_SND_SOC_MAX98095)	+= snd-soc-max98095.o
 obj-$(CONFIG_SND_SOC_MAX9850)	+= snd-soc-max9850.o
+obj-$(CONFIG_SND_SOC_MXC_SPDIF)	+= snd-soc-mxc-spdif.o
 obj-$(CONFIG_SND_SOC_PCM3008)	+= snd-soc-pcm3008.o
 obj-$(CONFIG_SND_SOC_SGTL5000)  += snd-soc-sgtl5000.o
 obj-$(CONFIG_SND_SOC_SN95031)	+=snd-soc-sn95031.o
diff --git a/sound/soc/codecs/mxc_spdif.c b/sound/soc/codecs/mxc_spdif.c
new file mode 100644
index 00000000000..6774ed95426
--- /dev/null
+++ b/sound/soc/codecs/mxc_spdif.c
@@ -0,0 +1,1272 @@
+/*
+ * MXC SPDIF ALSA Soc Codec Driver
+ *
+ * Copyright (C) 2007-2011 Freescale Semiconductor, Inc.
+ */
+
+/*
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/pm.h>
+#include <linux/clk.h>
+#include <linux/platform_device.h>
+#include <linux/interrupt.h>
+#include <linux/fsl_devices.h>
+#include <linux/io.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/asoundef.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <sound/initval.h>
+#include <mach/hardware.h>
+
+#include "mxc_spdif.h"
+
+#define MXC_SPDIF_DEBUG 0
+
+static unsigned int gainsel_multi[GAINSEL_MULTI_MAX] = {
+	24 * 1024, 16 * 1024, 12 * 1024,
+	8 * 1024, 6 * 1024, 4 * 1024,
+	3 * 1024,
+};
+
+/*
+ * SPDIF control structure
+ * Defines channel status, subcode and Q sub
+ */
+struct spdif_mixer_control {
+	/* spinlock to access control data */
+	spinlock_t ctl_lock;
+	/* IEC958 channel tx status bit */
+	unsigned char ch_status[4];
+	/* User bits */
+	unsigned char subcode[2 * SPDIF_UBITS_SIZE];
+	/* Q subcode part of user bits */
+	unsigned char qsub[2 * SPDIF_QSUB_SIZE];
+	/* buffer ptrs for writer */
+	unsigned int upos;
+	unsigned int qpos;
+	/* ready buffer index of the two buffers */
+	unsigned int ready_buf;
+};
+
+struct mxc_spdif_priv {
+	struct snd_soc_codec codec;
+	struct mxc_spdif_platform_data *plat_data;
+	unsigned long __iomem *reg_base;
+	unsigned long reg_phys_base;
+	struct snd_card *card;	/* ALSA SPDIF sound card handle */
+	struct snd_pcm *pcm;	/* ALSA spdif driver type handle */
+	atomic_t dpll_locked;	/* DPLL locked status */
+};
+
+struct spdif_mixer_control mxc_spdif_control;
+
+static unsigned long spdif_base_addr;
+
+#if MXC_SPDIF_DEBUG
+static void dumpregs(void)
+{
+	unsigned int value, i;
+
+	for (i = 0 ; i <= 0x38 ; i += 4) {
+		value = readl(spdif_base_addr + i) & 0xffffff;
+		pr_debug("reg 0x%02x = 0x%06x\n", i, value);
+	}
+
+	i = 0x44;
+	value = readl(spdif_base_addr + i) & 0xffffff;
+	pr_debug("reg 0x%02x = 0x%06x\n", i, value);
+
+	i = 0x50;
+	value = readl(spdif_base_addr + i) & 0xffffff;
+	pr_debug("reg 0x%02x = 0x%06x\n", i, value);
+}
+#else
+static void dumpregs(void) {}
+#endif
+
+/* define each spdif interrupt handlers */
+typedef void (*spdif_irq_func_t) (unsigned int bit, void *desc);
+
+/* spdif irq functions declare */
+static void spdif_irq_fifo(unsigned int bit, void *devid);
+static void spdif_irq_dpll_lock(unsigned int bit, void *devid);
+static void spdif_irq_uq(unsigned int bit, void *devid);
+static void spdif_irq_bit_error(unsigned int bit, void *devid);
+static void spdif_irq_sym_error(unsigned int bit, void *devid);
+static void spdif_irq_valnogood(unsigned int bit, void *devid);
+static void spdif_irq_cnew(unsigned int bit, void *devid);
+
+/* irq function list */
+static spdif_irq_func_t spdif_irq_handlers[] = {
+	spdif_irq_fifo,
+	spdif_irq_fifo,
+	spdif_irq_dpll_lock,
+	NULL,
+	spdif_irq_fifo,
+	spdif_irq_uq,
+	spdif_irq_uq,
+	spdif_irq_uq,
+	spdif_irq_uq,
+	spdif_irq_uq,
+	spdif_irq_uq,
+	NULL,
+	NULL,
+	NULL,
+	spdif_irq_bit_error,
+	spdif_irq_sym_error,
+	spdif_irq_valnogood,
+	spdif_irq_cnew,
+	NULL,
+	spdif_irq_fifo,
+	spdif_irq_dpll_lock,
+};
+
+static void spdif_intr_enable(unsigned long intr, int enable)
+{
+	unsigned long value;
+
+	value = __raw_readl(spdif_base_addr + SPDIF_REG_SIE) & 0xffffff;
+
+	if (enable)
+		value |= intr;
+	else
+		value &= ~intr;
+
+	__raw_writel(value, spdif_base_addr + SPDIF_REG_SIE);
+}
+
+/*
+ * Get spdif interrupt status and clear the interrupt
+ */
+static int spdif_intr_status(void)
+{
+	unsigned long value;
+
+	value = __raw_readl(SPDIF_REG_SIS + spdif_base_addr) & 0xffffff;
+	value &= __raw_readl(spdif_base_addr + SPDIF_REG_SIE);
+	__raw_writel(value, SPDIF_REG_SIC + spdif_base_addr);
+
+	return value;
+}
+
+static irqreturn_t spdif_isr(int irq, void *dev_id)
+{
+	unsigned long int_stat;
+	int line;
+
+	int_stat = spdif_intr_status();
+
+	while ((line = ffs(int_stat)) != 0) {
+		int_stat &= ~(1UL << (line - 1));
+		if (spdif_irq_handlers[line - 1] != NULL)
+			spdif_irq_handlers[line - 1] (line - 1, dev_id);
+	}
+
+	return IRQ_HANDLED;
+}
+
+/*
+ * Rx FIFO Full, Underrun/Overrun interrupts
+ * Tx FIFO Empty, Underrun/Overrun interrupts
+ */
+static void spdif_irq_fifo(unsigned int bit, void *devid)
+{
+	pr_debug("irq %s\n", __func__);
+}
+
+/*
+ * DPLL locked and lock loss interrupt handler
+ */
+static void spdif_irq_dpll_lock(unsigned int bit, void *devid)
+{
+	struct mxc_spdif_priv *spdif_priv = (struct mxc_spdif_priv *)devid;
+	unsigned int locked = __raw_readl(spdif_base_addr + SPDIF_REG_SRPC);
+
+	if (locked & SRPC_DPLL_LOCKED) {
+		pr_debug("SPDIF Rx dpll locked\n");
+		atomic_set(&spdif_priv->dpll_locked, 1);
+	} else {
+		/* INT_LOSS_LOCK */
+		pr_debug("SPDIF Rx dpll loss lock\n");
+		atomic_set(&spdif_priv->dpll_locked, 0);
+	}
+}
+
+/*
+ * U/Q channel related interrupts handler
+ *
+ * U/QChannel full, overrun interrupts
+ * U/QChannel sync error and frame error interrupts
+ */
+static void spdif_irq_uq(unsigned int bit, void *devid)
+{
+	unsigned long val;
+	int index;
+	struct spdif_mixer_control *ctrl = &mxc_spdif_control;
+
+	bit = 1 << bit;
+	/* get U/Q channel datas */
+	switch (bit) {
+
+	case INT_URX_OV:	/* read U data */
+		pr_debug("User bit receive overrun\n");
+	case INT_URX_FUL:
+		pr_debug("U bit receive full\n");
+
+		if (ctrl->upos >= SPDIF_UBITS_SIZE * 2) {
+			ctrl->upos = 0;
+		} else if (unlikely((ctrl->upos % SPDIF_UBITS_SIZE) + 3
+				    > SPDIF_UBITS_SIZE)) {
+			pr_err("User bit receivce buffer overflow\n");
+			break;
+		}
+		val = __raw_readl(spdif_base_addr + SPDIF_REG_SQU);
+		ctrl->subcode[ctrl->upos++] = val >> 16;
+		ctrl->subcode[ctrl->upos++] = val >> 8;
+		ctrl->subcode[ctrl->upos++] = val;
+
+		break;
+
+	case INT_QRX_OV:	/* read Q data */
+		pr_debug("Q bit receive overrun\n");
+	case INT_QRX_FUL:
+		pr_debug("Q bit receive full\n");
+
+		if (ctrl->qpos >= SPDIF_QSUB_SIZE * 2) {
+			ctrl->qpos = 0;
+		} else if (unlikely((ctrl->qpos % SPDIF_QSUB_SIZE) + 3
+				    > SPDIF_QSUB_SIZE)) {
+			pr_debug("Q bit receivce buffer overflow\n");
+			break;
+		}
+		val = __raw_readl(spdif_base_addr + SPDIF_REG_SRQ);
+		ctrl->qsub[ctrl->qpos++] = val >> 16;
+		ctrl->qsub[ctrl->qpos++] = val >> 8;
+		ctrl->qsub[ctrl->qpos++] = val;
+
+		break;
+
+	case INT_UQ_ERR:	/* read U/Q data and do buffer reset */
+		pr_debug("U/Q bit receive error\n");
+		val = __raw_readl(spdif_base_addr + SPDIF_REG_SQU);
+		val = __raw_readl(spdif_base_addr + SPDIF_REG_SRQ);
+		/* drop this U/Q buffer */
+		ctrl->ready_buf = 0;
+		ctrl->upos = 0;
+		ctrl->qpos = 0;
+		break;
+
+	case INT_UQ_SYNC:	/* U/Q buffer reset */
+		pr_debug("U/Q sync receive\n");
+
+		if (ctrl->qpos == 0)
+			break;
+		index = (ctrl->qpos - 1) / SPDIF_QSUB_SIZE;
+		/* set ready to this buffer */
+		ctrl->ready_buf = index + 1;
+		break;
+	}
+}
+
+/*
+ * SPDIF receiver found parity bit error interrupt handler
+ */
+static void spdif_irq_bit_error(unsigned int bit, void *devid)
+{
+	pr_debug("SPDIF interrupt parity bit error\n");
+}
+
+/*
+ * SPDIF receiver found illegal symbol interrupt handler
+ */
+static void spdif_irq_sym_error(unsigned int bit, void *devid)
+{
+	pr_debug("SPDIF interrupt symbol error\n");
+}
+
+/*
+ * SPDIF validity flag no good interrupt handler
+ */
+static void spdif_irq_valnogood(unsigned int bit, void *devid)
+{
+	pr_debug("SPDIF interrupt validate is not good\n");
+}
+
+/*
+ * SPDIF receive change in value of control channel
+ */
+static void spdif_irq_cnew(unsigned int bit, void *devid)
+{
+	pr_debug("SPDIF interrupt cstatus new\n");
+}
+
+static void spdif_softreset(void)
+{
+	unsigned long value = 1;
+	int cycle = 0;
+
+	__raw_writel(SCR_SOFT_RESET, spdif_base_addr + SPDIF_REG_SCR);
+
+	while (value && (cycle++ < 10))
+		value = __raw_readl(spdif_base_addr + SPDIF_REG_SCR) & 0x1000;
+}
+
+static int spdif_set_clk_accuracy(enum spdif_clk_accuracy level)
+{
+	unsigned long value;
+
+	value = __raw_readl(SPDIF_REG_STCSCL + spdif_base_addr) & 0xffffcf;
+	value |= (level << 4);
+	__raw_writel(value, SPDIF_REG_STCSCL + spdif_base_addr);
+
+	pr_debug("STCSCL: 0x%08x\n", __raw_readl(spdif_base_addr + SPDIF_REG_STCSCL));
+
+	return 0;
+}
+
+/*
+ * set SPDIF PhaseConfig register for rx clock
+ */
+static int spdif_set_rx_clksrc(enum spdif_clk_src clksrc,
+			       enum spdif_gainsel gainsel, int dpll_locked)
+{
+	unsigned long value;
+
+	if (clksrc > SPDIF_CLK_SRC5 || gainsel > GAINSEL_MULTI_3)
+		return 1;
+
+	if (dpll_locked)
+		value = clksrc;
+	else
+		value = clksrc + SRPC_CLKSRC_SEL_LOCKED;
+
+	value = (value << SRPC_CLKSRC_SEL_OFFSET) |
+		(gainsel << SRPC_GAINSEL_OFFSET);
+
+	__raw_writel(value, spdif_base_addr + SPDIF_REG_SRPC);
+
+	return 0;
+}
+
+/*
+ * Get RX data clock rate given the SPDIF bus_clk
+ */
+static int spdif_get_rxclk_rate(struct clk *bus_clk, enum spdif_gainsel gainsel)
+{
+	unsigned long freqmeas, phaseconf, busclk_freq = 0;
+	u64 tmpval64;
+	enum spdif_clk_src clksrc;
+
+	freqmeas = __raw_readl(spdif_base_addr + SPDIF_REG_SRFM);
+	phaseconf = __raw_readl(spdif_base_addr + SPDIF_REG_SRPC);
+
+	clksrc = (phaseconf >> SRPC_CLKSRC_SEL_OFFSET) & 0x0F;
+	if (clksrc < 5 && (phaseconf & SRPC_DPLL_LOCKED)) {
+		/* get bus clock from system */
+		busclk_freq = clk_get_rate(bus_clk);
+	}
+
+	/* FreqMeas_CLK = (BUS_CLK*FreqMeas[23:0])/2^10/GAINSEL/128 */
+	tmpval64 = (u64) busclk_freq * freqmeas;
+	do_div(tmpval64, gainsel_multi[gainsel]);
+	do_div(tmpval64, 128 * 1024);
+
+	pr_debug("FreqMeas:    %d\n", (int)freqmeas);
+	pr_debug("busclk_freq: %d\n", (int)busclk_freq);
+	pr_debug("rx rate:     %d\n", (int)tmpval64);
+
+	return (int)tmpval64;
+}
+
+static int spdif_set_sample_rate(int src_44100, int src_48000, int sample_rate)
+{
+	unsigned long cstatus, stc;
+	int ret = 0;
+
+	cstatus = __raw_readl(SPDIF_REG_STCSCL + spdif_base_addr) & 0xfffff0;
+	stc = __raw_readl(SPDIF_REG_STC + spdif_base_addr) & ~0x7FF;
+
+	switch (sample_rate) {
+	case 44100:
+		if (src_44100 < 0) {
+			pr_info("%s: no defined 44100 clk src\n", __func__);
+			ret = -1;
+		} else {
+			__raw_writel(cstatus, SPDIF_REG_STCSCL + spdif_base_addr);
+			stc |= (src_44100 << 8) | 0x07;
+			__raw_writel(stc, SPDIF_REG_STC + spdif_base_addr);
+			pr_debug("set sample rate to 44100\n");
+		}
+		break;
+	case 48000:
+		if (src_48000 < 0) {
+			pr_info("%s: no defined 48000 clk src\n", __func__);
+			ret = -1;
+		} else {
+			cstatus |= 0x04;
+			__raw_writel(cstatus, SPDIF_REG_STCSCL + spdif_base_addr);
+			stc |= (src_48000 << 8) | 0x07;
+			__raw_writel(stc, SPDIF_REG_STC + spdif_base_addr);
+			pr_debug("set sample rate to 48000\n");
+		}
+		break;
+	case 32000:
+		if (src_48000 < 0) {
+			pr_info("%s: no defined 48000 clk src\n", __func__);
+			ret = -1;
+		} else {
+			cstatus |= 0x0c;
+			__raw_writel(cstatus, SPDIF_REG_STCSCL + spdif_base_addr);
+			stc |= (src_48000 << 8) | 0x0b;
+			__raw_writel(stc, SPDIF_REG_STC + spdif_base_addr);
+			pr_debug("set sample rate to 32000\n");
+		}
+		break;
+	}
+
+	pr_debug("STCSCL: 0x%08x\n", __raw_readl(spdif_base_addr + SPDIF_REG_STCSCL));
+
+	return ret;
+}
+
+static int spdif_set_channel_status(int value, unsigned long reg)
+{
+	__raw_writel(value & 0xffffff, reg + spdif_base_addr);
+
+	return 0;
+}
+
+static unsigned int spdif_playback_rates[] = { 32000, 44100, 48000 };
+
+static unsigned int spdif_capture_rates[] = {
+	16000, 32000, 44100, 48000, 64000, 96000
+};
+
+static struct snd_pcm_hw_constraint_list hw_playback_rates_stereo = {
+	.count = ARRAY_SIZE(spdif_playback_rates),
+	.list = spdif_playback_rates,
+	.mask = 0,
+};
+
+static struct snd_pcm_hw_constraint_list hw_capture_rates_stereo = {
+	.count = ARRAY_SIZE(spdif_capture_rates),
+	.list = spdif_capture_rates,
+	.mask = 0,
+};
+
+static int mxc_spdif_playback_startup(struct snd_pcm_substream *substream,
+					       struct snd_soc_dai *dai)
+{
+	struct snd_soc_codec *codec = dai->codec;
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct mxc_spdif_priv *spdif_priv = snd_soc_codec_get_drvdata(codec);
+	struct mxc_spdif_platform_data *plat_data = spdif_priv->plat_data;
+	int err;
+
+	if (!plat_data->spdif_tx)
+		return -EINVAL;
+
+	clk_enable(plat_data->spdif_clk);
+	clk_enable(plat_data->spdif_audio_clk);
+
+	err = snd_pcm_hw_constraint_list(runtime, 0,
+					 SNDRV_PCM_HW_PARAM_RATE,
+					 &hw_playback_rates_stereo);
+	if (err < 0)
+		goto failed;
+	err = snd_pcm_hw_constraint_integer(runtime,
+					    SNDRV_PCM_HW_PARAM_PERIODS);
+	if (err < 0)
+		goto failed;
+
+	return 0;
+failed:
+	clk_disable(plat_data->spdif_clk);
+	return err;
+}
+
+static int mxc_spdif_playback_prepare(struct snd_pcm_substream *substream,
+					  struct snd_soc_dai *dai)
+{
+	struct snd_soc_codec *codec = dai->codec;
+	struct mxc_spdif_priv *spdif_priv = snd_soc_codec_get_drvdata(codec);
+	struct mxc_spdif_platform_data *plat_data = spdif_priv->plat_data;
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	unsigned int ch_status;
+	unsigned long regval;
+	int err;
+
+	if (!plat_data->spdif_tx)
+		return -EINVAL;
+
+	regval = __raw_readl(spdif_base_addr + SPDIF_REG_SCR);
+	regval &= 0xfc33e3;
+	regval &= ~SCR_LOW_POWER;
+	regval |= SCR_TXFIFO_AUTOSYNC | SCR_TXFIFO_NORMAL |
+	    SCR_TXSEL_NORMAL | SCR_USRC_SEL_CHIP | (2 << SCR_TXFIFO_ESEL_BIT);
+	__raw_writel(regval, SPDIF_REG_SCR + spdif_base_addr);
+
+	/* Default clock source from EXTAL, divider by 8, generate 44.1kHz
+	   sample rate */
+	__raw_writel(0x07, SPDIF_REG_STC + spdif_base_addr);
+
+	ch_status = ((mxc_spdif_control.ch_status[2] << 16) |
+		     (mxc_spdif_control.ch_status[1] << 8) |
+		     mxc_spdif_control.ch_status[0]);
+	spdif_set_channel_status(ch_status, SPDIF_REG_STCSCH);
+	ch_status = mxc_spdif_control.ch_status[3];
+	spdif_set_channel_status(ch_status, SPDIF_REG_STCSCL);
+	spdif_intr_enable(INT_TXFIFO_RESYNC, 1);
+	err = spdif_set_sample_rate(plat_data->spdif_clk_44100,
+				    plat_data->spdif_clk_48000,
+				    runtime->rate);
+	if (err < 0) {
+		pr_info("%s - err < 0\n", __func__);
+		return err;
+	}
+	spdif_set_clk_accuracy(SPDIF_CLK_ACCURACY_LEV2);
+
+	pr_debug("SCR: 0x%08x\n", __raw_readl(spdif_base_addr + SPDIF_REG_SCR));
+	pr_debug("SIE: 0x%08x\n", __raw_readl(spdif_base_addr + SPDIF_REG_SIE));
+	pr_debug("STC: 0x%08x\n", __raw_readl(spdif_base_addr + SPDIF_REG_STC));
+
+	pr_debug("STCSCH: 0x%08x\n", __raw_readl(spdif_base_addr + SPDIF_REG_STCSCH));
+	pr_debug("STCSCL: 0x%08x\n", __raw_readl(spdif_base_addr + SPDIF_REG_STCSCL));
+
+	regval = __raw_readl(SPDIF_REG_SCR + spdif_base_addr);
+	regval |= SCR_DMA_TX_EN;
+	__raw_writel(regval, SPDIF_REG_SCR + spdif_base_addr);
+
+	dumpregs();
+	return 0;
+}
+
+static int mxc_spdif_playback_shutdown(struct snd_pcm_substream *substream,
+						struct snd_soc_dai *dai)
+{
+	struct snd_soc_codec *codec = dai->codec;
+	struct mxc_spdif_priv *spdif_priv = snd_soc_codec_get_drvdata(codec);
+	struct mxc_spdif_platform_data *plat_data = spdif_priv->plat_data;
+	unsigned long regval;
+
+	if (!plat_data->spdif_tx)
+		return -EINVAL;
+
+	dumpregs();
+	pr_debug("SIS: 0x%08x\n", __raw_readl(spdif_base_addr + SPDIF_REG_SIS));
+
+	spdif_intr_status();
+	spdif_intr_enable(INT_TXFIFO_RESYNC, 0);
+
+	regval = __raw_readl(SPDIF_REG_SCR + spdif_base_addr) & 0xffffe3;
+	regval |= SCR_TXSEL_OFF;
+	__raw_writel(regval, SPDIF_REG_SCR + spdif_base_addr);
+	regval = __raw_readl(SPDIF_REG_STC + spdif_base_addr) & ~0x7FF;
+	regval |= (0x7 << STC_TXCLK_SRC_OFFSET);
+	__raw_writel(regval, SPDIF_REG_STC + spdif_base_addr);
+
+	regval = __raw_readl(SPDIF_REG_SCR + spdif_base_addr);
+	regval &= ~SCR_DMA_TX_EN;
+	regval |= SCR_LOW_POWER;
+	__raw_writel(regval, SPDIF_REG_SCR + spdif_base_addr);
+
+	clk_disable(plat_data->spdif_audio_clk);
+	clk_disable(plat_data->spdif_clk);
+
+	return 0;
+}
+
+static int mxc_spdif_capture_startup(struct snd_pcm_substream *substream,
+					      struct snd_soc_dai *dai)
+{
+	struct snd_soc_codec *codec = dai->codec;
+	struct mxc_spdif_priv *spdif_priv = snd_soc_codec_get_drvdata(codec);
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct mxc_spdif_platform_data *plat_data = spdif_priv->plat_data;
+	int err = 0;
+
+	if (!plat_data->spdif_rx)
+		return -EINVAL;
+
+	/* enable rx bus clock */
+	clk_enable(plat_data->spdif_clk);
+
+	/* set hw param constraints */
+	err = snd_pcm_hw_constraint_list(runtime, 0,
+					 SNDRV_PCM_HW_PARAM_RATE,
+					 &hw_capture_rates_stereo);
+	if (err < 0)
+		goto failed;
+
+	err = snd_pcm_hw_constraint_integer(runtime,
+					    SNDRV_PCM_HW_PARAM_PERIODS);
+	if (err < 0)
+		goto failed;
+
+	/* enable spdif dpll lock interrupt */
+	spdif_intr_enable(INT_DPLL_LOCKED, 1);
+
+	return 0;
+
+failed:
+	clk_disable(plat_data->spdif_clk);
+	return err;
+}
+
+static int mxc_spdif_capture_prepare(struct snd_pcm_substream *substream,
+					 struct snd_soc_dai *dai)
+{
+	struct snd_soc_codec *codec = dai->codec;
+	struct mxc_spdif_priv *spdif_priv = snd_soc_codec_get_drvdata(codec);
+	struct mxc_spdif_platform_data *plat_data = spdif_priv->plat_data;
+	unsigned long regval;
+
+	if (!plat_data->spdif_rx)
+		return -EINVAL;
+
+	regval = __raw_readl(spdif_base_addr + SPDIF_REG_SCR);
+	/*
+	 * initial and reset SPDIF configuration:
+	 * RxFIFO off
+	 * RxFIFO sel to 8 sample
+	 * Autosync
+	 * Valid bit set
+	 */
+	regval &= ~(SCR_RXFIFO_OFF | SCR_RXFIFO_CTL_ZERO | SCR_LOW_POWER);
+	regval |= (2 << SCR_RXFIFO_FSEL_BIT) | SCR_RXFIFO_AUTOSYNC;
+	__raw_writel(regval, spdif_base_addr + SPDIF_REG_SCR);
+
+	/* enable interrupts, include DPLL lock */
+	spdif_intr_enable(INT_SYM_ERR | INT_BIT_ERR | INT_URX_FUL |
+			  INT_URX_OV | INT_QRX_FUL | INT_QRX_OV |
+			  INT_UQ_SYNC | INT_UQ_ERR | INT_RX_RESYNC |
+			  INT_LOSS_LOCK, 1);
+
+	/* setup rx clock source */
+	spdif_set_rx_clksrc(plat_data->spdif_clkid, SPDIF_DEFAULT_GAINSEL, 1);
+
+	regval = __raw_readl(SPDIF_REG_SCR + spdif_base_addr);
+	regval |= SCR_DMA_RX_EN;
+	__raw_writel(regval, SPDIF_REG_SCR + spdif_base_addr);
+
+	/* Debug: dump registers */
+	pr_debug("SCR: 0x%08x\n", __raw_readl(spdif_base_addr + SPDIF_REG_SCR));
+	pr_debug("SIE: 0x%08x\n", __raw_readl(spdif_base_addr + SPDIF_REG_SIE));
+	pr_debug("SRPC: 0x%08x\n", __raw_readl(spdif_base_addr + SPDIF_REG_SRPC));
+	pr_debug("FreqMeas: 0x%08x\n", __raw_readl(spdif_base_addr + SPDIF_REG_SRFM));
+
+	return 0;
+}
+
+static int mxc_spdif_capture_shutdown(struct snd_pcm_substream *substream,
+					       struct snd_soc_dai *dai)
+{
+	struct snd_soc_codec *codec = dai->codec;
+	struct mxc_spdif_priv *spdif_priv = snd_soc_codec_get_drvdata(codec);
+	struct mxc_spdif_platform_data *plat_data = spdif_priv->plat_data;
+	unsigned long regval;
+
+	if (!plat_data->spdif_rx)
+		return -EINVAL;
+
+	pr_debug("SIS: 0x%08x\n", __raw_readl(spdif_base_addr + SPDIF_REG_SIS));
+	pr_debug("SRPC: 0x%08x\n", __raw_readl(spdif_base_addr + SPDIF_REG_SRPC));
+	pr_debug("FreqMeas: 0x%08x\n", __raw_readl(spdif_base_addr + SPDIF_REG_SRFM));
+
+	spdif_intr_enable(INT_DPLL_LOCKED | INT_SYM_ERR | INT_BIT_ERR |
+			  INT_URX_FUL | INT_URX_OV | INT_QRX_FUL | INT_QRX_OV |
+			  INT_UQ_SYNC | INT_UQ_ERR | INT_RX_RESYNC |
+			  INT_LOSS_LOCK, 0);
+
+	regval = __raw_readl(SPDIF_REG_SCR + spdif_base_addr);
+	regval &= SCR_DMA_RX_EN;
+	__raw_writel(regval, SPDIF_REG_SCR + spdif_base_addr);
+
+	/* turn off RX fifo, disable dma and autosync */
+	regval = __raw_readl(spdif_base_addr + SPDIF_REG_SCR);
+	regval |= SCR_RXFIFO_OFF | SCR_RXFIFO_CTL_ZERO | SCR_LOW_POWER;
+	regval &= ~(SCR_DMA_RX_EN | SCR_RXFIFO_AUTOSYNC);
+	__raw_writel(regval, spdif_base_addr + SPDIF_REG_SCR);
+
+	clk_disable(plat_data->spdif_clk);
+
+	return 0;
+}
+
+/*
+ * MXC SPDIF IEC958 controller(mixer) functions
+ *
+ *	Channel status get/put control
+ *	User bit value get/put control
+ *	Valid bit value get control
+ *	DPLL lock status get control
+ *	User bit sync mode selection control
+ */
+static int mxc_pb_spdif_info(struct snd_kcontrol *kcontrol,
+			     struct snd_ctl_elem_info *uinfo)
+{
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
+	uinfo->count = 1;
+	return 0;
+}
+
+static int mxc_pb_spdif_get(struct snd_kcontrol *kcontrol,
+			    struct snd_ctl_elem_value *uvalue)
+{
+	uvalue->value.iec958.status[0] = mxc_spdif_control.ch_status[0];
+	uvalue->value.iec958.status[1] = mxc_spdif_control.ch_status[1];
+	uvalue->value.iec958.status[2] = mxc_spdif_control.ch_status[2];
+	uvalue->value.iec958.status[3] = mxc_spdif_control.ch_status[3];
+	return 0;
+}
+
+static int mxc_pb_spdif_put(struct snd_kcontrol *kcontrol,
+			    struct snd_ctl_elem_value *uvalue)
+{
+	unsigned int ch_status;
+	mxc_spdif_control.ch_status[0] = uvalue->value.iec958.status[0];
+	mxc_spdif_control.ch_status[1] = uvalue->value.iec958.status[1];
+	mxc_spdif_control.ch_status[2] = uvalue->value.iec958.status[2];
+	mxc_spdif_control.ch_status[3] = uvalue->value.iec958.status[3];
+	ch_status =
+	    ((mxc_spdif_control.ch_status[2] << 16) |
+	     (mxc_spdif_control.ch_status[1] << 8) |
+	     mxc_spdif_control.ch_status[0]);
+	spdif_set_channel_status(ch_status, SPDIF_REG_STCSCH);
+	ch_status = mxc_spdif_control.ch_status[3];
+	spdif_set_channel_status(ch_status, SPDIF_REG_STCSCL);
+
+	pr_debug("STCSCH: 0x%08x\n", __raw_readl(spdif_base_addr + SPDIF_REG_STCSCH));
+	pr_debug("STCSCL: 0x%08x\n", __raw_readl(spdif_base_addr + SPDIF_REG_STCSCL));
+
+	return 0;
+}
+
+static int mxc_spdif_info(struct snd_kcontrol *kcontrol,
+			  struct snd_ctl_elem_info *uinfo)
+{
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
+	uinfo->count = 1;
+	return 0;
+}
+
+/*
+ * Get channel status from SPDIF_RX_CCHAN register
+ */
+static int mxc_spdif_capture_get(struct snd_kcontrol *kcontrol,
+				 struct snd_ctl_elem_value *ucontrol)
+{
+	unsigned int cstatus;
+
+	if (!(__raw_readl(spdif_base_addr + SPDIF_REG_SIS) & INT_CNEW))
+		return -EAGAIN;
+
+	cstatus = __raw_readl(spdif_base_addr + SPDIF_REG_SRCSLH);
+	ucontrol->value.iec958.status[0] = (cstatus >> 16) & 0xFF;
+	ucontrol->value.iec958.status[1] = (cstatus >> 8) & 0xFF;
+	ucontrol->value.iec958.status[2] = cstatus & 0xFF;
+	cstatus = __raw_readl(spdif_base_addr + SPDIF_REG_SRCSLL);
+	ucontrol->value.iec958.status[3] = (cstatus >> 16) & 0xFF;
+	ucontrol->value.iec958.status[4] = (cstatus >> 8) & 0xFF;
+	ucontrol->value.iec958.status[5] = cstatus & 0xFF;
+
+	/* clear intr */
+	__raw_writel(INT_CNEW, spdif_base_addr + SPDIF_REG_SIC);
+
+	return 0;
+}
+
+/*
+ * Get User bits (subcode) from chip value which readed out
+ * in UChannel register.
+ */
+static int mxc_spdif_subcode_get(struct snd_kcontrol *kcontrol,
+				 struct snd_ctl_elem_value *ucontrol)
+{
+	unsigned long flags;
+	int ret = 0;
+
+	spin_lock_irqsave(&mxc_spdif_control.ctl_lock, flags);
+	if (mxc_spdif_control.ready_buf) {
+		memcpy(&ucontrol->value.iec958.subcode[0],
+		       &mxc_spdif_control.subcode[(mxc_spdif_control.ready_buf -
+						   1) * SPDIF_UBITS_SIZE],
+		       SPDIF_UBITS_SIZE);
+	} else {
+		ret = -EAGAIN;
+	}
+	spin_unlock_irqrestore(&mxc_spdif_control.ctl_lock, flags);
+
+	return ret;
+}
+
+/*
+ * Q-subcode infomation.
+ * the byte size is SPDIF_UBITS_SIZE/8
+ */
+static int mxc_spdif_qinfo(struct snd_kcontrol *kcontrol,
+			   struct snd_ctl_elem_info *uinfo)
+{
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
+	uinfo->count = SPDIF_QSUB_SIZE;
+	return 0;
+}
+
+/*
+ * Get Q subcode from chip value which readed out
+ * in QChannel register.
+ */
+static int mxc_spdif_qget(struct snd_kcontrol *kcontrol,
+			  struct snd_ctl_elem_value *ucontrol)
+{
+	unsigned long flags;
+	int ret = 0;
+
+	spin_lock_irqsave(&mxc_spdif_control.ctl_lock, flags);
+	if (mxc_spdif_control.ready_buf) {
+		memcpy(&ucontrol->value.bytes.data[0],
+		       &mxc_spdif_control.qsub[(mxc_spdif_control.ready_buf -
+						1) * SPDIF_QSUB_SIZE],
+		       SPDIF_QSUB_SIZE);
+	} else {
+		ret = -EAGAIN;
+	}
+	spin_unlock_irqrestore(&mxc_spdif_control.ctl_lock, flags);
+
+	return ret;
+}
+
+/*
+ * Valid bit infomation.
+ */
+static int mxc_spdif_vbit_info(struct snd_kcontrol *kcontrol,
+			       struct snd_ctl_elem_info *uinfo)
+{
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
+	uinfo->count = 1;
+	uinfo->value.integer.min = 0;
+	uinfo->value.integer.max = 1;
+	return 0;
+}
+
+/*
+ * Get valid good bit from interrupt status register.
+ */
+static int mxc_spdif_vbit_get(struct snd_kcontrol *kcontrol,
+			      struct snd_ctl_elem_value *ucontrol)
+{
+	unsigned int int_val;
+
+	int_val = __raw_readl(spdif_base_addr + SPDIF_REG_SIS);
+	ucontrol->value.integer.value[0] = (int_val & INT_VAL_NOGOOD) != 0;
+	__raw_writel(INT_VAL_NOGOOD, spdif_base_addr + SPDIF_REG_SIC);
+
+	return 0;
+}
+
+/*
+ * DPLL lock infomation.
+ */
+static int mxc_spdif_rxrate_info(struct snd_kcontrol *kcontrol,
+				 struct snd_ctl_elem_info *uinfo)
+{
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+	uinfo->count = 1;
+	uinfo->value.integer.min = 16000;
+	uinfo->value.integer.max = 96000;
+	return 0;
+}
+
+/*
+ * Get DPLL lock or not info from stable interrupt status register.
+ * User application must use this control to get locked,
+ * then can do next PCM operation
+ */
+static int mxc_spdif_rxrate_get(struct snd_kcontrol *kcontrol,
+				struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
+	struct mxc_spdif_priv *spdif_priv = snd_soc_codec_get_drvdata(codec);
+
+	struct mxc_spdif_platform_data *plat_data = spdif_priv->plat_data;
+
+	if (atomic_read(&spdif_priv->dpll_locked)) {
+		ucontrol->value.integer.value[0] =
+		    spdif_get_rxclk_rate(plat_data->spdif_clk,
+					 SPDIF_DEFAULT_GAINSEL);
+	} else {
+		ucontrol->value.integer.value[0] = 0;
+	}
+	return 0;
+}
+
+/*
+ * User bit sync mode info
+ */
+static int mxc_spdif_usync_info(struct snd_kcontrol *kcontrol,
+				struct snd_ctl_elem_info *uinfo)
+{
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
+	uinfo->count = 1;
+	uinfo->value.integer.min = 0;
+	uinfo->value.integer.max = 1;
+	return 0;
+}
+
+/*
+ * User bit sync mode:
+ * 1 CD User channel subcode
+ * 0 Non-CD data
+ */
+static int mxc_spdif_usync_get(struct snd_kcontrol *kcontrol,
+			       struct snd_ctl_elem_value *ucontrol)
+{
+	unsigned int int_val;
+	int_val = __raw_readl(spdif_base_addr + SPDIF_REG_SRCD);
+	ucontrol->value.integer.value[0] = (int_val & SRCD_CD_USER) != 0;
+	return 0;
+}
+
+/*
+ * User bit sync mode:
+ * 1 CD User channel subcode
+ * 0 Non-CD data
+ */
+static int mxc_spdif_usync_put(struct snd_kcontrol *kcontrol,
+				   struct snd_ctl_elem_value *ucontrol)
+{
+	unsigned int int_val;
+
+	int_val = ucontrol->value.integer.value[0] << SRCD_CD_USER_OFFSET;
+	__raw_writel(int_val, spdif_base_addr + SPDIF_REG_SRCD);
+	return 0;
+}
+
+/*
+ * MXC SPDIF IEC958 controller defines
+ */
+static struct snd_kcontrol_new mxc_spdif_ctrls[] = {
+	/* status cchanel controller */
+	{
+	 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+	 .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, DEFAULT),
+	 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_WRITE |
+	 SNDRV_CTL_ELEM_ACCESS_VOLATILE,
+	 .info = mxc_pb_spdif_info,
+	 .get = mxc_pb_spdif_get,
+	 .put = mxc_pb_spdif_put,
+	 },
+	{
+	 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
+	 .name = SNDRV_CTL_NAME_IEC958("", CAPTURE, DEFAULT),
+	 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
+	 .info = mxc_spdif_info,
+	 .get = mxc_spdif_capture_get,
+	 },
+	/* user bits controller */
+	{
+	 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
+	 .name = "IEC958 Subcode Capture Default",
+	 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
+	 .info = mxc_spdif_info,
+	 .get = mxc_spdif_subcode_get,
+	 },
+	{
+	 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
+	 .name = "IEC958 Q-subcode Capture Default",
+	 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
+	 .info = mxc_spdif_qinfo,
+	 .get = mxc_spdif_qget,
+	 },
+	/* valid bit error controller */
+	{
+	 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
+	 .name = "IEC958 V-Bit Errors",
+	 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
+	 .info = mxc_spdif_vbit_info,
+	 .get = mxc_spdif_vbit_get,
+	 },
+	/* DPLL lock info get controller */
+	{
+	 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
+	 .name = "RX Sample Rate",
+	 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
+	 .info = mxc_spdif_rxrate_info,
+	 .get = mxc_spdif_rxrate_get,
+	 },
+	/* User bit sync mode set/get controller */
+	{
+	 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
+	 .name = "IEC958 USyncMode CDText",
+	 .access =
+	 SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_WRITE |
+	 SNDRV_CTL_ELEM_ACCESS_VOLATILE,
+	 .info = mxc_spdif_usync_info,
+	 .get = mxc_spdif_usync_get,
+	 .put = mxc_spdif_usync_put,
+	 },
+};
+
+static int mxc_spdif_startup(struct snd_pcm_substream *substream,
+			     struct snd_soc_dai *dai)
+{
+	int ret;
+
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+		ret = mxc_spdif_playback_startup(substream, dai);
+	else
+		ret = mxc_spdif_capture_startup(substream, dai);
+
+	return ret;
+}
+
+static void mxc_spdif_shutdown(struct snd_pcm_substream *substream,
+			       struct snd_soc_dai *dai)
+{
+	int ret;
+
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+		ret = mxc_spdif_playback_shutdown(substream, dai);
+	else
+		ret = mxc_spdif_capture_shutdown(substream, dai);
+}
+
+static int mxc_spdif_prepare(struct snd_pcm_substream *substream,
+			     struct snd_soc_dai *dai)
+{
+	int ret;
+
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+		ret = mxc_spdif_playback_prepare(substream, dai);
+	else
+		ret = mxc_spdif_capture_prepare(substream, dai);
+
+	return ret;
+}
+
+struct snd_soc_dai_ops mxc_spdif_codec_dai_ops = {
+	.startup = mxc_spdif_startup,
+	.prepare = mxc_spdif_prepare,
+	.shutdown = mxc_spdif_shutdown,
+};
+
+struct snd_soc_dai_driver mxc_spdif_codec_dai = {
+	.name = "mxc-spdif",
+	.ops = &mxc_spdif_codec_dai_ops,
+};
+
+static int mxc_spdif_soc_probe(struct snd_soc_codec *codec)
+{
+	snd_soc_add_controls(codec, mxc_spdif_ctrls,
+			     ARRAY_SIZE(mxc_spdif_ctrls));
+	return 0;
+}
+
+static int mxc_spdif_soc_remove(struct snd_soc_codec *codec)
+{
+	/* all done in mxc_spdif_remove */
+	return 0;
+}
+
+#ifdef CONFIG_PM
+static int mxc_spdif_soc_suspend(struct snd_soc_codec *codec,
+				 pm_message_t state)
+{
+	struct mxc_spdif_priv *spdif_priv = snd_soc_codec_get_drvdata(codec);
+	struct mxc_spdif_platform_data *plat_data;
+
+	if (codec == NULL)
+		return -EINVAL;
+
+	plat_data = spdif_priv->plat_data;
+	clk_disable(plat_data->spdif_clk);
+	clk_disable(plat_data->spdif_core_clk);
+
+	return 0;
+}
+
+static int mxc_spdif_soc_resume(struct snd_soc_codec *codec)
+{
+	struct mxc_spdif_priv *spdif_priv = snd_soc_codec_get_drvdata(codec);
+	struct mxc_spdif_platform_data *plat_data;
+
+	if (codec == NULL)
+		return -EINVAL;
+
+	plat_data = spdif_priv->plat_data;
+
+	clk_enable(plat_data->spdif_core_clk);
+	clk_enable(plat_data->spdif_clk);
+	spdif_softreset();
+
+	return 0;
+}
+#else
+#define mxc_spdif_soc_suspend	NULL
+#define mxc_spdif_soc_resume	NULL
+#endif /* CONFIG_PM */
+
+struct snd_soc_codec_driver soc_codec_dev_spdif = {
+	.probe = mxc_spdif_soc_probe,
+	.remove = mxc_spdif_soc_remove,
+	.suspend = mxc_spdif_soc_suspend,
+	.resume = mxc_spdif_soc_resume,
+};
+
+static int __devinit mxc_spdif_probe(struct platform_device *pdev)
+{
+	struct mxc_spdif_platform_data *plat_data =
+	    (struct mxc_spdif_platform_data *)pdev->dev.platform_data;
+	struct resource *res;
+	struct mxc_spdif_priv *spdif_priv;
+	int err, irq;
+	int ret = 0;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!res)
+		return -ENOENT;
+
+	dev_info(&pdev->dev, "MXC SPDIF Audio\n");
+
+	spdif_priv = kzalloc(sizeof(struct mxc_spdif_priv), GFP_KERNEL);
+	if (spdif_priv == NULL)
+		return -ENOMEM;
+
+	if (plat_data->spdif_tx) {
+		mxc_spdif_codec_dai.playback.stream_name = "Playback";
+		mxc_spdif_codec_dai.playback.channels_min = 2;
+		mxc_spdif_codec_dai.playback.channels_max = 2;
+		mxc_spdif_codec_dai.playback.rates = MXC_SPDIF_RATES_PLAYBACK;
+		mxc_spdif_codec_dai.playback.formats = MXC_SPDIF_FORMATS_PLAYBACK;
+	}
+
+	if (plat_data->spdif_rx) {
+		mxc_spdif_codec_dai.capture.stream_name = "Capture";
+		mxc_spdif_codec_dai.capture.channels_min = 2;
+		mxc_spdif_codec_dai.capture.channels_max = 2;
+		mxc_spdif_codec_dai.capture.rates = MXC_SPDIF_RATES_CAPTURE;
+		mxc_spdif_codec_dai.capture.formats = MXC_SPDIF_FORMATS_CAPTURE;
+	}
+
+	platform_set_drvdata(pdev, spdif_priv);
+
+	spdif_priv->reg_phys_base = res->start;
+	spdif_priv->reg_base = ioremap(res->start, res->end - res->start + 1);
+	spdif_priv->plat_data = plat_data;
+
+	spdif_base_addr = (unsigned long)spdif_priv->reg_base;
+
+	/* initial spinlock for control data */
+	spin_lock_init(&mxc_spdif_control.ctl_lock);
+
+	if (plat_data->spdif_tx) {
+		/* init tx channel status default value */
+		mxc_spdif_control.ch_status[0] =
+		    IEC958_AES0_CON_NOT_COPYRIGHT |
+		    IEC958_AES0_CON_EMPHASIS_5015;
+		mxc_spdif_control.ch_status[1] = IEC958_AES1_CON_DIGDIGCONV_ID;
+		mxc_spdif_control.ch_status[2] = 0x00;
+		mxc_spdif_control.ch_status[3] =
+		    IEC958_AES3_CON_FS_44100 | IEC958_AES3_CON_CLOCK_1000PPM;
+	}
+
+	plat_data->spdif_clk = clk_get(&pdev->dev, NULL);
+
+	atomic_set(&spdif_priv->dpll_locked, 0);
+
+	/* spdif_xtal_clk */
+	clk_enable(plat_data->spdif_core_clk);
+	spdif_softreset();
+
+	/* disable all the interrupts */
+	spdif_intr_enable(0xffffff, 0);
+
+	/* spdif interrupt register and disable */
+	irq = platform_get_irq(pdev, 0);
+	if ((irq <= 0) || request_irq(irq, spdif_isr, 0, "spdif", spdif_priv)) {
+		pr_err("MXC spdif: failed to request irq\n");
+		err = -EBUSY;
+		goto card_err;
+	}
+
+	ret = snd_soc_register_codec(&pdev->dev, &soc_codec_dev_spdif,
+				     &mxc_spdif_codec_dai, 1);
+
+	if (ret) {
+		dev_err(&pdev->dev, "failed to register codec\n");
+		goto card_err;
+	}
+
+	dumpregs();
+
+	return 0;
+
+card_err:
+	clk_disable(plat_data->spdif_clk);
+	clk_put(plat_data->spdif_clk);
+	clk_disable(plat_data->spdif_core_clk);
+
+	platform_set_drvdata(pdev, NULL);
+	kfree(spdif_priv);
+
+	return ret;
+}
+
+static int __devexit mxc_spdif_remove(struct platform_device *pdev)
+{
+	struct mxc_spdif_priv *spdif_priv = platform_get_drvdata(pdev);
+	struct mxc_spdif_platform_data *plat_data = spdif_priv->plat_data;
+
+	snd_soc_unregister_codec(&pdev->dev);
+
+	clk_disable(plat_data->spdif_clk);
+	clk_put(plat_data->spdif_clk);
+	clk_disable(plat_data->spdif_core_clk);
+
+	platform_set_drvdata(pdev, NULL);
+	kfree(spdif_priv);
+
+	return 0;
+}
+
+struct platform_driver mxc_spdif_driver = {
+	.driver = {
+		   .name = "mxc_spdif",
+		   .owner = THIS_MODULE,
+		   },
+	.probe = mxc_spdif_probe,
+	.remove = __devexit_p(mxc_spdif_remove),
+};
+
+static int __init mxc_spdif_init(void)
+{
+	return platform_driver_register(&mxc_spdif_driver);
+}
+
+static void __exit mxc_spdif_exit(void)
+{
+	return platform_driver_unregister(&mxc_spdif_driver);
+}
+
+module_init(mxc_spdif_init);
+module_exit(mxc_spdif_exit);
+
+MODULE_AUTHOR("Freescale Semiconductor, Inc.");
+MODULE_DESCRIPTION("MXC SPDIF transmitter");
+MODULE_LICENSE("GPL");
diff --git a/sound/soc/codecs/mxc_spdif.h b/sound/soc/codecs/mxc_spdif.h
new file mode 100644
index 00000000000..7eb98352d4d
--- /dev/null
+++ b/sound/soc/codecs/mxc_spdif.h
@@ -0,0 +1,164 @@
+/*
+ * ALSA SoC MXC SPDIF codec driver
+ *
+ * Copyright (C) 2008-2011 Freescale Semiconductor, Inc.
+ *
+ * Based on stmp3xxx_spdif.h by:
+ * Vladimir Barinov <vbarinov@embeddedalley.com>
+ *
+ * Copyright 2008 SigmaTel, Inc
+ * Copyright 2008 Embedded Alley Solutions, Inc
+ * Copyright 2008-2009 Freescale Semiconductor, Inc.
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2.  This program  is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ */
+#ifndef __MXC_SPDIF_CODEC_H
+#define __MXC_SPDIF_CODEC_H
+
+#define SPDIF_REG_SCR		0x00
+#define SPDIF_REG_SRCD		0x04
+#define SPDIF_REG_SRPC		0x08
+#define SPDIF_REG_SIE		0x0C
+#define SPDIF_REG_SIS		0x10
+#define SPDIF_REG_SIC		0x10
+#define SPDIF_REG_SRL		0x14
+#define SPDIF_REG_SRR		0x18
+#define SPDIF_REG_SRCSLH	0x1C
+#define SPDIF_REG_SRCSLL	0x20
+#define SPDIF_REG_SQU		0x24
+#define SPDIF_REG_SRQ		0x28
+#define SPDIF_REG_STL		0x2C
+#define SPDIF_REG_STR		0x30
+#define SPDIF_REG_STCSCH	0x34
+#define SPDIF_REG_STCSCL	0x38
+#define SPDIF_REG_SRFM		0x44
+#define SPDIF_REG_STC		0x50
+
+/* SPDIF Configuration register */
+#define SCR_RXFIFO_CTL_ZERO	(1 << 23)
+#define SCR_RXFIFO_OFF		(1 << 22)
+#define SCR_RXFIFO_RST		(1 << 21)
+#define SCR_RXFIFO_FSEL_BIT	(19)
+#define SCR_RXFIFO_FSEL_MASK	(0x3 << SCR_RXFIFO_FSEL_BIT)
+#define SCR_RXFIFO_AUTOSYNC	(1 << 18)
+#define SCR_TXFIFO_AUTOSYNC	(1 << 17)
+#define SCR_TXFIFO_ESEL_BIT	(15)
+#define SCR_TXFIFO_ESEL_MASK	(0x3 << SCR_TXFIFO_FSEL_BIT)
+#define SCR_LOW_POWER		(1 << 13)
+#define SCR_SOFT_RESET		(1 << 12)
+#define SCR_TXFIFO_ZERO		(0 << 10)
+#define SCR_TXFIFO_NORMAL	(1 << 10)
+#define SCR_TXFIFO_ONESAMPLE	(1 << 11)
+#define SCR_DMA_RX_EN		(1 << 9)
+#define SCR_DMA_TX_EN		(1 << 8)
+#define SCR_VAL_CLEAR		(1 << 5)
+#define SCR_TXSEL_OFF		(0 << 2)
+#define SCR_TXSEL_RX		(1 << 2)
+#define SCR_TXSEL_NORMAL	(0x5 << 2)
+#define SCR_USRC_SEL_NONE	(0x0)
+#define SCR_USRC_SEL_RECV	(0x1)
+#define SCR_USRC_SEL_CHIP	(0x3)
+
+/* SPDIF CDText control */
+#define SRCD_CD_USER_OFFSET	1
+#define SRCD_CD_USER		(1 << SRCD_CD_USER_OFFSET)
+
+/* SPDIF Phase Configuration register */
+#define SRPC_DPLL_LOCKED	(1 << 6)
+#define SRPC_CLKSRC_SEL_OFFSET	7
+#define SRPC_CLKSRC_SEL_LOCKED	5
+/* gain sel */
+#define SRPC_GAINSEL_OFFSET	3
+
+enum spdif_gainsel {
+	GAINSEL_MULTI_24 = 0,
+	GAINSEL_MULTI_16,
+	GAINSEL_MULTI_12,
+	GAINSEL_MULTI_8,
+	GAINSEL_MULTI_6,
+	GAINSEL_MULTI_4,
+	GAINSEL_MULTI_3,
+	GAINSEL_MULTI_MAX,
+};
+
+#define SPDIF_DEFAULT_GAINSEL	GAINSEL_MULTI_8
+
+/* SPDIF interrupt mask define */
+#define INT_DPLL_LOCKED		(1 << 20)
+#define INT_TXFIFO_UNOV		(1 << 19)
+#define INT_TXFIFO_RESYNC	(1 << 18)
+#define INT_CNEW		(1 << 17)
+#define INT_VAL_NOGOOD		(1 << 16)
+#define INT_SYM_ERR		(1 << 15)
+#define INT_BIT_ERR		(1 << 14)
+#define INT_URX_FUL		(1 << 10)
+#define INT_URX_OV		(1 << 9)
+#define INT_QRX_FUL		(1 << 8)
+#define INT_QRX_OV		(1 << 7)
+#define INT_UQ_SYNC		(1 << 6)
+#define INT_UQ_ERR		(1 << 5)
+#define INT_RX_UNOV		(1 << 4)
+#define INT_RX_RESYNC		(1 << 3)
+#define INT_LOSS_LOCK		(1 << 2)
+#define INT_TX_EMPTY		(1 << 1)
+#define INT_RXFIFO_FUL		(1 << 0)
+
+/* SPDIF Clock register */
+#define STC_SYSCLK_DIV_OFFSET	11
+#define STC_TXCLK_SRC_OFFSET	8
+#define STC_TXCLK_DIV_OFFSET	0
+
+#define SPDIF_CSTATUS_BYTE	6
+#define SPDIF_UBITS_SIZE	96
+#define SPDIF_QSUB_SIZE		(SPDIF_UBITS_SIZE/8)
+
+enum spdif_clk_accuracy {
+	SPDIF_CLK_ACCURACY_LEV2 = 0,
+	SPDIF_CLK_ACCURACY_LEV1 = 2,
+	SPDIF_CLK_ACCURACY_LEV3 = 1,
+	SPDIF_CLK_ACCURACY_RESV = 3
+};
+
+/* SPDIF clock source */
+enum spdif_clk_src {
+	SPDIF_CLK_SRC1 = 0,
+	SPDIF_CLK_SRC2,
+	SPDIF_CLK_SRC3,
+	SPDIF_CLK_SRC4,
+	SPDIF_CLK_SRC5,
+};
+
+enum spdif_max_wdl {
+	SPDIF_MAX_WDL_20,
+	SPDIF_MAX_WDL_24
+};
+
+enum spdif_wdl {
+	SPDIF_WDL_DEFAULT = 0,
+	SPDIF_WDL_FIFTH = 4,
+	SPDIF_WDL_FOURTH = 3,
+	SPDIF_WDL_THIRD = 2,
+	SPDIF_WDL_SECOND = 1,
+	SPDIF_WDL_MAX = 5
+};
+
+#define MXC_SPDIF_RATES_PLAYBACK	(SNDRV_PCM_RATE_32000 |	\
+					 SNDRV_PCM_RATE_44100 |	\
+					 SNDRV_PCM_RATE_48000)
+
+#define MXC_SPDIF_RATES_CAPTURE		(SNDRV_PCM_RATE_16000 | \
+					 SNDRV_PCM_RATE_32000 |	\
+					 SNDRV_PCM_RATE_44100 | \
+					 SNDRV_PCM_RATE_48000 |	\
+					 SNDRV_PCM_RATE_64000 | \
+					 SNDRV_PCM_RATE_96000)
+
+#define MXC_SPDIF_FORMATS_PLAYBACK	(SNDRV_PCM_FMTBIT_S16_LE | \
+					 SNDRV_PCM_FMTBIT_S20_3LE | \
+					 SNDRV_PCM_FMTBIT_S24_LE)
+
+#define MXC_SPDIF_FORMATS_CAPTURE	(SNDRV_PCM_FMTBIT_S24_LE)
+
+#endif /* __MXC_SPDIF_CODEC_H */
diff --git a/sound/soc/imx/Kconfig b/sound/soc/imx/Kconfig
index 351a30b8d16..c17eb9c3024 100644
--- a/sound/soc/imx/Kconfig
+++ b/sound/soc/imx/Kconfig
@@ -17,6 +17,9 @@ config SND_MXC_SOC_FIQ
 config SND_MXC_SOC_MX2
 	tristate
 
+config SND_MXC_SOC_SPDIF_DAI
+	tristate
+
 config SND_MXC_SOC_WM1133_EV1
 	tristate "Audio on the the i.MX31ADS with WM1133-EV1 fitted"
 	depends on MACH_MX31ADS_WM1133_EV1 && EXPERIMENTAL
@@ -67,4 +70,14 @@ config SND_SOC_EUKREA_TLV320
 	  Enable I2S based access to the TLV320AIC23B codec attached
 	  to the SSI interface
 
+config SND_SOC_IMX_SPDIF
+	tristate "SoC Audio support for IMX - S/PDIF"
+	default n
+	select SND_MXC_SOC_SPDIF_DAI
+	select SND_SOC_MXC_SPDIF
+	select SND_MXC_SOC_MX2
+	help
+	  Say Y if you want to add support for SoC audio on a IMX development
+	  board with S/PDIF.
+
 endif	# SND_IMX_SOC
diff --git a/sound/soc/imx/Makefile b/sound/soc/imx/Makefile
index 38693ed074a..d5a04757d62 100644
--- a/sound/soc/imx/Makefile
+++ b/sound/soc/imx/Makefile
@@ -2,10 +2,12 @@
 snd-soc-imx-objs := imx-ssi.o
 snd-soc-imx-fiq-objs := imx-pcm-fiq.o
 snd-soc-imx-mx2-objs := imx-pcm-dma-mx2.o
+snd-soc-imx-spdif-dai-objs := imx-spdif-dai.o
 
 obj-$(CONFIG_SND_IMX_SOC) += snd-soc-imx.o
 obj-$(CONFIG_SND_MXC_SOC_FIQ) += snd-soc-imx-fiq.o
 obj-$(CONFIG_SND_MXC_SOC_MX2) += snd-soc-imx-mx2.o
+obj-$(CONFIG_SND_MXC_SOC_SPDIF_DAI) += snd-soc-imx-spdif-dai.o
 
 # i.MX Machine Support
 snd-soc-eukrea-tlv320-objs := eukrea-tlv320.o
@@ -13,9 +15,11 @@ snd-soc-phycore-ac97-objs := phycore-ac97.o
 snd-soc-mx27vis-aic32x4-objs := mx27vis-aic32x4.o
 snd-soc-wm1133-ev1-objs := wm1133-ev1.o
 snd-soc-imx-sgtl5000-objs := imx-sgtl5000.o
+snd-soc-imx-spdif-objs := imx-spdif.o
 
 obj-$(CONFIG_SND_SOC_EUKREA_TLV320) += snd-soc-eukrea-tlv320.o
 obj-$(CONFIG_SND_SOC_PHYCORE_AC97) += snd-soc-phycore-ac97.o
 obj-$(CONFIG_SND_SOC_MX27VIS_AIC32X4) += snd-soc-mx27vis-aic32x4.o
 obj-$(CONFIG_SND_MXC_SOC_WM1133_EV1) += snd-soc-wm1133-ev1.o
 obj-$(CONFIG_SND_SOC_IMX_SGTL5000) += snd-soc-imx-sgtl5000.o
+obj-$(CONFIG_SND_SOC_IMX_SPDIF) += snd-soc-imx-spdif.o
diff --git a/sound/soc/imx/imx-pcm-dma-mx2.c b/sound/soc/imx/imx-pcm-dma-mx2.c
index 13b8437ad07..27d250944a0 100644
--- a/sound/soc/imx/imx-pcm-dma-mx2.c
+++ b/sound/soc/imx/imx-pcm-dma-mx2.c
@@ -83,7 +83,7 @@ static int imx_ssi_dma_alloc(struct snd_pcm_substream *substream,
 
 	dma_params = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
 
-	iprtd->dma_data.peripheral_type = IMX_DMATYPE_SSI_SP;
+	iprtd->dma_data.peripheral_type = dma_params->peripheral_type;
 	iprtd->dma_data.priority = DMA_PRIO_HIGH;
 	iprtd->dma_data.dma_request = dma_params->dma;
 
diff --git a/sound/soc/imx/imx-spdif-dai.c b/sound/soc/imx/imx-spdif-dai.c
new file mode 100644
index 00000000000..a3b38658c6f
--- /dev/null
+++ b/sound/soc/imx/imx-spdif-dai.c
@@ -0,0 +1,137 @@
+/*
+ * ALSA SoC SPDIF Audio Layer for MXS
+ *
+ * Copyright (C) 2008-2011 Freescale Semiconductor, Inc.
+ *
+ * Based on stmp3xxx_spdif_dai.c
+ * Vladimir Barinov <vbarinov@embeddedalley.com>
+ * Copyright 2008 SigmaTel, Inc
+ * Copyright 2008 Embedded Alley Solutions, Inc
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2.  This program  is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/dma-mapping.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+#include <mach/dma.h>
+#include <mach/hardware.h>
+
+#include "../codecs/mxc_spdif.h"
+
+#define MXC_SPDIF_TXFIFO_WML      0x8
+#define MXC_SPDIF_RXFIFO_WML      0x8
+
+struct imx_pcm_dma_params dma_params_tx;
+struct imx_pcm_dma_params dma_params_rx;
+
+static int imx_spdif_hw_params(struct snd_pcm_substream *substream,
+			       struct snd_pcm_hw_params *params,
+			       struct snd_soc_dai *cpu_dai)
+{
+	/* Tx/Rx config */
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+		snd_soc_dai_set_dma_data(cpu_dai, substream, &dma_params_tx);
+	else
+		snd_soc_dai_set_dma_data(cpu_dai, substream, &dma_params_rx);
+
+	return 0;
+}
+
+struct snd_soc_dai_ops imx_spdif_dai_ops = {
+	.hw_params      = imx_spdif_hw_params,
+};
+
+struct snd_soc_dai_driver imx_spdif_dai = {
+	.playback = {
+		.channels_min = 2,
+		.channels_max = 2,
+		.rates = MXC_SPDIF_RATES_PLAYBACK,
+		.formats = MXC_SPDIF_FORMATS_PLAYBACK,
+	},
+	.capture = {
+		.channels_min = 2,
+		.channels_max = 2,
+		.rates = MXC_SPDIF_RATES_CAPTURE,
+		.formats = MXC_SPDIF_FORMATS_CAPTURE,
+	},
+	.ops = &imx_spdif_dai_ops,
+};
+
+static int imx_spdif_dai_probe(struct platform_device *pdev)
+{
+	struct resource *res;
+	int ret = 0;
+
+	dma_params_tx.burstsize = MXC_SPDIF_TXFIFO_WML;
+	dma_params_rx.burstsize = MXC_SPDIF_RXFIFO_WML;
+
+	dma_params_tx.peripheral_type = IMX_DMATYPE_SPDIF;
+	dma_params_rx.peripheral_type = IMX_DMATYPE_SPDIF;
+
+	res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "tx");
+	if (res)
+		dma_params_tx.dma = res->start;
+
+	res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "rx");
+	if (res)
+		dma_params_rx.dma = res->start;
+
+	res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "tx_reg");
+	if (res)
+		dma_params_tx.dma_addr = res->start;
+
+	res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "rx_reg");
+	if (res)
+		dma_params_rx.dma_addr = res->start;
+
+	ret = snd_soc_register_dai(&pdev->dev, &imx_spdif_dai);
+	if (ret) {
+		dev_err(&pdev->dev, "register DAI failed\n");
+		goto failed_register;
+	}
+
+	return 0;
+
+failed_register:
+	return ret;
+}
+
+static int __devexit imx_spdif_dai_remove(struct platform_device *pdev)
+{
+	snd_soc_unregister_dai(&pdev->dev);
+	return 0;
+}
+
+static struct platform_driver imx_ssi_driver = {
+	.probe = imx_spdif_dai_probe,
+	.remove = __devexit_p(imx_spdif_dai_remove),
+
+	.driver = {
+		.name = "imx-spdif-dai",
+		.owner = THIS_MODULE,
+	},
+};
+
+static int __init imx_spdif_dai_init(void)
+{
+	return platform_driver_register(&imx_ssi_driver);
+}
+
+static void __exit imx_spdif_dai_exit(void)
+{
+	platform_driver_unregister(&imx_ssi_driver);
+}
+module_init(imx_spdif_dai_init);
+module_exit(imx_spdif_dai_exit);
+
+MODULE_AUTHOR("Freescale Semiconductor, Inc.");
+MODULE_DESCRIPTION("IMX SPDIF DAI");
+MODULE_LICENSE("GPL");
diff --git a/sound/soc/imx/imx-spdif.c b/sound/soc/imx/imx-spdif.c
new file mode 100644
index 00000000000..f336545f921
--- /dev/null
+++ b/sound/soc/imx/imx-spdif.c
@@ -0,0 +1,144 @@
+/*
+ * ASoC S/PDIF driver for IMX development boards
+ *
+ * Copyright (C) 2008-2011 Freescale Semiconductor, Inc.
+ *
+ * based on stmp3780_devb_spdif.c
+ *
+ * Vladimir Barinov <vbarinov@embeddedalley.com>
+ *
+ * Copyright 2008 SigmaTel, Inc
+ * Copyright 2008 Embedded Alley Solutions, Inc
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2.  This program  is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ */
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/timer.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+
+#include <asm/mach-types.h>
+#include <asm/dma.h>
+#include <mach/hardware.h>
+
+#include "imx-ssi.h"
+#include "../codecs/mxc_spdif.h"
+
+/* imx digital audio interface glue - connects codec <--> CPU */
+static struct snd_soc_dai_link imx_spdif_dai_link = {
+	.name = "IMX SPDIF",
+	.stream_name = "IMX SPDIF",
+	.codec_dai_name = "mxc-spdif",
+	.codec_name = "mxc_spdif.0",
+	.cpu_dai_name = "imx-spdif-dai.0",
+	.platform_name = "imx-pcm-audio.2", /* imx-pcm-dma-mx2 */
+};
+
+static struct snd_soc_card snd_soc_card_imx_spdif = {
+	.name = "imx-spdif",
+	.dai_link = &imx_spdif_dai_link,
+	.num_links = 1,
+};
+
+static int __devinit imx_spdif_audio_probe(struct platform_device *pdev)
+{
+	struct imx_ssi *ssi;
+	int ret;
+
+	ssi = kzalloc(sizeof(*ssi), GFP_KERNEL);
+	if (!ssi)
+		return -ENOMEM;
+
+	dev_set_drvdata(&pdev->dev, ssi);
+
+	ssi->soc_platform_pdev = platform_device_alloc("imx-pcm-audio", 2);
+	if (!ssi->soc_platform_pdev) {
+		pr_err("%s failed platform_device_alloc\n", __func__);
+		return -ENOMEM;
+	}
+
+	/* It may seem weird to be using struct imx_ssi here because S/PDIF
+	   doesn't use ssi.  We only use soc_platform_pdev in struct imx_ssi.
+	   But we need it because imx-pcm-dma-mx2 initializes other fields. */
+	platform_set_drvdata(ssi->soc_platform_pdev, ssi);
+
+	ret = platform_device_add(ssi->soc_platform_pdev);
+	if (ret) {
+		dev_err(&pdev->dev, "failed to add platform device\n");
+		platform_device_put(ssi->soc_platform_pdev);
+		return ret;
+	}
+
+	return 0;
+}
+
+static int __devexit imx_spdif_audio_remove(struct platform_device *pdev)
+{
+	struct imx_ssi *ssi = platform_get_drvdata(pdev);
+
+	platform_device_unregister(ssi->soc_platform_pdev);
+	snd_soc_unregister_dai(&pdev->dev);
+	kfree(ssi);
+
+	return 0;
+}
+
+static struct platform_driver imx_spdif_audio_driver = {
+	.probe = imx_spdif_audio_probe,
+	.remove = __devexit_p(imx_spdif_audio_remove),
+	.driver = {
+		   .name = "imx-spdif-audio-device",
+		   .owner = THIS_MODULE,
+		   },
+};
+
+static struct platform_device *imx_spdif_snd_device;
+
+static int __init imx_spdif_init(void)
+{
+	int ret = 0;
+
+	ret = platform_driver_register(&imx_spdif_audio_driver);
+	if (ret) {
+		pr_err("%s - failed platform_driver_register\n", __func__);
+		return -ENOMEM;
+	}
+
+	imx_spdif_snd_device = platform_device_alloc("soc-audio", 1);
+	if (!imx_spdif_snd_device) {
+		pr_err("%s - failed platform_device_alloc\n", __func__);
+		return -ENOMEM;
+	}
+
+	platform_set_drvdata(imx_spdif_snd_device, &snd_soc_card_imx_spdif);
+
+	ret = platform_device_add(imx_spdif_snd_device);
+	if (ret) {
+		pr_err("ASoC S/PDIF: Platform device allocation failed\n");
+		platform_device_put(imx_spdif_snd_device);
+	}
+
+	return ret;
+}
+
+static void __exit imx_spdif_exit(void)
+{
+	platform_driver_unregister(&imx_spdif_audio_driver);
+	platform_device_unregister(imx_spdif_snd_device);
+}
+
+module_init(imx_spdif_init);
+module_exit(imx_spdif_exit);
+
+MODULE_AUTHOR("Freescale Semiconductor, Inc.");
+MODULE_DESCRIPTION("IMX EVK development board ASoC driver");
+MODULE_LICENSE("GPL");
diff --git a/sound/soc/imx/imx-ssi.c b/sound/soc/imx/imx-ssi.c
index 10a8e278375..d5f54b265fe 100644
--- a/sound/soc/imx/imx-ssi.c
+++ b/sound/soc/imx/imx-ssi.c
@@ -659,6 +659,8 @@ static int imx_ssi_probe(struct platform_device *pdev)
 
 	ssi->dma_params_tx.burstsize = 4;
 	ssi->dma_params_rx.burstsize = 4;
+	ssi->dma_params_tx.peripheral_type = IMX_DMATYPE_SSI_SP;
+	ssi->dma_params_rx.peripheral_type = IMX_DMATYPE_SSI_SP;
 
 	res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "tx0");
 	if (res)
diff --git a/sound/soc/imx/imx-ssi.h b/sound/soc/imx/imx-ssi.h
index 0a84cec3599..fc96b2de50c 100644
--- a/sound/soc/imx/imx-ssi.h
+++ b/sound/soc/imx/imx-ssi.h
@@ -188,12 +188,6 @@
 #include <linux/dmaengine.h>
 #include <mach/dma.h>
 
-struct imx_pcm_dma_params {
-	int dma;
-	unsigned long dma_addr;
-	int burstsize;
-};
-
 struct imx_ssi {
 	struct platform_device *ac97_dev;