Merge commit 'v2.6.34-rc1' into for-2.6.35

25 files changed, 1313 insertions, 219 deletions

diff --git a/sound/soc/au1x/Kconfig b/sound/soc/au1x/Kconfig
index 410a893aa66..4b67140fdec 100644
--- a/sound/soc/au1x/Kconfig
+++ b/sound/soc/au1x/Kconfig
@@ -22,11 +22,13 @@ config SND_SOC_AU1XPSC_AC97
 ##
 ## Boards
 ##
-config SND_SOC_SAMPLE_PSC_AC97
-	tristate "Sample Au12x0/Au1550 PSC AC97 sound machine"
+config SND_SOC_DB1200
+	tristate "DB1200 AC97+I2S audio support"
 	depends on SND_SOC_AU1XPSC
 	select SND_SOC_AU1XPSC_AC97
 	select SND_SOC_AC97_CODEC
+	select SND_SOC_AU1XPSC_I2S
+	select SND_SOC_WM8731
 	help
-	  This is a sample AC97 sound machine for use in Au12x0/Au1550
-	  based systems which have audio on PSC1 (e.g. Db1200 demoboard).
+	  Select this option to enable audio (AC97 or I2S) on the
+	  Alchemy/AMD/RMI DB1200 demoboard.
diff --git a/sound/soc/au1x/Makefile b/sound/soc/au1x/Makefile
index 6c6950b8003..16873076e8c 100644
--- a/sound/soc/au1x/Makefile
+++ b/sound/soc/au1x/Makefile
@@ -8,6 +8,6 @@ obj-$(CONFIG_SND_SOC_AU1XPSC_I2S) += snd-soc-au1xpsc-i2s.o
 obj-$(CONFIG_SND_SOC_AU1XPSC_AC97) += snd-soc-au1xpsc-ac97.o
 
 # Boards
-snd-soc-sample-ac97-objs := sample-ac97.o
+snd-soc-db1200-objs := db1200.o
 
-obj-$(CONFIG_SND_SOC_SAMPLE_PSC_AC97) += snd-soc-sample-ac97.o
+obj-$(CONFIG_SND_SOC_DB1200) += snd-soc-db1200.o
diff --git a/sound/soc/au1x/db1200.c b/sound/soc/au1x/db1200.c
new file mode 100644
index 00000000000..cdf7be1b9b9
--- /dev/null
+++ b/sound/soc/au1x/db1200.c
@@ -0,0 +1,141 @@
+/*
+ * DB1200 ASoC audio fabric support code.
+ *
+ * (c) 2008-9 Manuel Lauss <manuel.lauss@gmail.com>
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/timer.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <asm/mach-au1x00/au1000.h>
+#include <asm/mach-au1x00/au1xxx_psc.h>
+#include <asm/mach-au1x00/au1xxx_dbdma.h>
+#include <asm/mach-db1x00/bcsr.h>
+
+#include "../codecs/ac97.h"
+#include "../codecs/wm8731.h"
+#include "psc.h"
+
+/*-------------------------  AC97 PART  ---------------------------*/
+
+static struct snd_soc_dai_link db1200_ac97_dai = {
+	.name		= "AC97",
+	.stream_name	= "AC97 HiFi",
+	.cpu_dai	= &au1xpsc_ac97_dai,
+	.codec_dai	= &ac97_dai,
+};
+
+static struct snd_soc_card db1200_ac97_machine = {
+	.name		= "DB1200_AC97",
+	.dai_link	= &db1200_ac97_dai,
+	.num_links	= 1,
+	.platform	= &au1xpsc_soc_platform,
+};
+
+static struct snd_soc_device db1200_ac97_devdata = {
+	.card		= &db1200_ac97_machine,
+	.codec_dev	= &soc_codec_dev_ac97,
+};
+
+/*-------------------------  I2S PART  ---------------------------*/
+
+static int db1200_i2s_startup(struct snd_pcm_substream *substream)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
+	struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
+	int ret;
+
+	/* WM8731 has its own 12MHz crystal */
+	snd_soc_dai_set_sysclk(codec_dai, WM8731_SYSCLK,
+				12000000, SND_SOC_CLOCK_IN);
+
+	/* codec is bitclock and lrclk master */
+	ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_LEFT_J |
+			SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
+	if (ret < 0)
+		goto out;
+
+	ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_LEFT_J |
+			SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
+	if (ret < 0)
+		goto out;
+
+	ret = 0;
+out:
+	return ret;
+}
+
+static struct snd_soc_ops db1200_i2s_wm8731_ops = {
+	.startup	= db1200_i2s_startup,
+};
+
+static struct snd_soc_dai_link db1200_i2s_dai = {
+	.name		= "WM8731",
+	.stream_name	= "WM8731 PCM",
+	.cpu_dai	= &au1xpsc_i2s_dai,
+	.codec_dai	= &wm8731_dai,
+	.ops		= &db1200_i2s_wm8731_ops,
+};
+
+static struct snd_soc_card db1200_i2s_machine = {
+	.name		= "DB1200_I2S",
+	.dai_link	= &db1200_i2s_dai,
+	.num_links	= 1,
+	.platform	= &au1xpsc_soc_platform,
+};
+
+static struct snd_soc_device db1200_i2s_devdata = {
+	.card		= &db1200_i2s_machine,
+	.codec_dev	= &soc_codec_dev_wm8731,
+};
+
+/*-------------------------  COMMON PART  ---------------------------*/
+
+static struct platform_device *db1200_asoc_dev;
+
+static int __init db1200_audio_load(void)
+{
+	int ret;
+
+	ret = -ENOMEM;
+	db1200_asoc_dev = platform_device_alloc("soc-audio", -1);
+	if (!db1200_asoc_dev)
+		goto out;
+
+	/* DB1200 board setup set PSC1MUX to preferred audio device */
+	if (bcsr_read(BCSR_RESETS) & BCSR_RESETS_PSC1MUX)
+		platform_set_drvdata(db1200_asoc_dev, &db1200_i2s_devdata);
+	else
+		platform_set_drvdata(db1200_asoc_dev, &db1200_ac97_devdata);
+
+	db1200_ac97_devdata.dev = &db1200_asoc_dev->dev;
+	db1200_i2s_devdata.dev = &db1200_asoc_dev->dev;
+	ret = platform_device_add(db1200_asoc_dev);
+
+	if (ret) {
+		platform_device_put(db1200_asoc_dev);
+		db1200_asoc_dev = NULL;
+	}
+out:
+	return ret;
+}
+
+static void __exit db1200_audio_unload(void)
+{
+	platform_device_unregister(db1200_asoc_dev);
+}
+
+module_init(db1200_audio_load);
+module_exit(db1200_audio_unload);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("DB1200 ASoC audio support");
+MODULE_AUTHOR("Manuel Lauss");
diff --git a/sound/soc/au1x/dbdma2.c b/sound/soc/au1x/dbdma2.c
index 19e4d37eba1..6d9f4c62494 100644
--- a/sound/soc/au1x/dbdma2.c
+++ b/sound/soc/au1x/dbdma2.c
@@ -51,8 +51,8 @@ struct au1xpsc_audio_dmadata {
 	struct snd_pcm_substream *substream;
 	unsigned long curr_period;	/* current segment DDMA is working on */
 	unsigned long q_period;		/* queue period(s) */
-	unsigned long dma_area;		/* address of queued DMA area */
-	unsigned long dma_area_s;	/* start address of DMA area */
+	dma_addr_t dma_area;		/* address of queued DMA area */
+	dma_addr_t dma_area_s;		/* start address of DMA area */
 	unsigned long pos;		/* current byte position being played */
 	unsigned long periods;		/* number of SG segments in total */
 	unsigned long period_bytes;	/* size in bytes of one SG segment */
@@ -94,8 +94,7 @@ static const struct snd_pcm_hardware au1xpsc_pcm_hardware = {
 
 static void au1x_pcm_queue_tx(struct au1xpsc_audio_dmadata *cd)
 {
-	au1xxx_dbdma_put_source_flags(cd->ddma_chan,
-				(void *)phys_to_virt(cd->dma_area),
+	au1xxx_dbdma_put_source(cd->ddma_chan, cd->dma_area,
 				cd->period_bytes, DDMA_FLAGS_IE);
 
 	/* update next-to-queue period */
@@ -109,9 +108,8 @@ static void au1x_pcm_queue_tx(struct au1xpsc_audio_dmadata *cd)
 
 static void au1x_pcm_queue_rx(struct au1xpsc_audio_dmadata *cd)
 {
-	au1xxx_dbdma_put_dest_flags(cd->ddma_chan,
-				(void *)phys_to_virt(cd->dma_area),
-				cd->period_bytes, DDMA_FLAGS_IE);
+	au1xxx_dbdma_put_dest(cd->ddma_chan, cd->dma_area,
+			      cd->period_bytes, DDMA_FLAGS_IE);
 
 	/* update next-to-queue period */
 	++cd->q_period;
@@ -233,7 +231,7 @@ static int au1xpsc_pcm_hw_params(struct snd_pcm_substream *substream,
 	pcd->substream = substream;
 	pcd->period_bytes = params_period_bytes(params);
 	pcd->periods = params_periods(params);
-	pcd->dma_area_s = pcd->dma_area = (unsigned long)runtime->dma_addr;
+	pcd->dma_area_s = pcd->dma_area = runtime->dma_addr;
 	pcd->q_period = 0;
 	pcd->curr_period = 0;
 	pcd->pos = 0;
diff --git a/sound/soc/au1x/sample-ac97.c b/sound/soc/au1x/sample-ac97.c
deleted file mode 100644
index 27683eb7905..00000000000
--- a/sound/soc/au1x/sample-ac97.c
+++ /dev/null
@@ -1,144 +0,0 @@
-/*
- * Sample Au12x0/Au1550 PSC AC97 sound machine.
- *
- * Copyright (c) 2007-2008 Manuel Lauss <mano@roarinelk.homelinux.net>
- *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms outlined in the file COPYING at the root of this
- *  source archive.
- *
- * This is a very generic AC97 sound machine driver for boards which
- * have (AC97) audio at PSC1 (e.g. DB1200 demoboards).
- */
-
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/timer.h>
-#include <linux/interrupt.h>
-#include <linux/platform_device.h>
-#include <sound/core.h>
-#include <sound/pcm.h>
-#include <sound/soc.h>
-#include <sound/soc-dapm.h>
-#include <asm/mach-au1x00/au1000.h>
-#include <asm/mach-au1x00/au1xxx_psc.h>
-#include <asm/mach-au1x00/au1xxx_dbdma.h>
-
-#include "../codecs/ac97.h"
-#include "psc.h"
-
-static int au1xpsc_sample_ac97_init(struct snd_soc_codec *codec)
-{
-	snd_soc_dapm_sync(codec);
-	return 0;
-}
-
-static struct snd_soc_dai_link au1xpsc_sample_ac97_dai = {
-	.name		= "AC97",
-	.stream_name	= "AC97 HiFi",
-	.cpu_dai	= &au1xpsc_ac97_dai,	/* see psc-ac97.c */
-	.codec_dai	= &ac97_dai,		/* see codecs/ac97.c */
-	.init		= au1xpsc_sample_ac97_init,
-	.ops		= NULL,
-};
-
-static struct snd_soc_card au1xpsc_sample_ac97_machine = {
-	.name		= "Au1xxx PSC AC97 Audio",
-	.dai_link	= &au1xpsc_sample_ac97_dai,
-	.num_links	= 1,
-};
-
-static struct snd_soc_device au1xpsc_sample_ac97_devdata = {
-	.card		= &au1xpsc_sample_ac97_machine,
-	.platform	= &au1xpsc_soc_platform, /* see dbdma2.c */
-	.codec_dev	= &soc_codec_dev_ac97,
-};
-
-static struct resource au1xpsc_psc1_res[] = {
-	[0] = {
-		.start	= CPHYSADDR(PSC1_BASE_ADDR),
-		.end	= CPHYSADDR(PSC1_BASE_ADDR) + 0x000fffff,
-		.flags	= IORESOURCE_MEM,
-	},
-	[1] = {
-#ifdef CONFIG_SOC_AU1200
-		.start	= AU1200_PSC1_INT,
-		.end	= AU1200_PSC1_INT,
-#elif defined(CONFIG_SOC_AU1550)
-		.start	= AU1550_PSC1_INT,
-		.end	= AU1550_PSC1_INT,
-#endif
-		.flags	= IORESOURCE_IRQ,
-	},
-	[2] = {
-		.start	= DSCR_CMD0_PSC1_TX,
-		.end	= DSCR_CMD0_PSC1_TX,
-		.flags	= IORESOURCE_DMA,
-	},
-	[3] = {
-		.start	= DSCR_CMD0_PSC1_RX,
-		.end	= DSCR_CMD0_PSC1_RX,
-		.flags	= IORESOURCE_DMA,
-	},
-};
-
-static struct platform_device *au1xpsc_sample_ac97_dev;
-
-static int __init au1xpsc_sample_ac97_load(void)
-{
-	int ret;
-
-#ifdef CONFIG_SOC_AU1200
-	unsigned long io;
-
-	/* modify sys_pinfunc for AC97 on PSC1 */
-	io = au_readl(SYS_PINFUNC);
-	io |= SYS_PINFUNC_P1C;
-	io &= ~(SYS_PINFUNC_P1A | SYS_PINFUNC_P1B);
-	au_writel(io, SYS_PINFUNC);
-	au_sync();
-#endif
-
-	ret = -ENOMEM;
-
-	/* setup PSC clock source for AC97 part: external clock provided
-	 * by codec.  The psc-ac97.c driver depends on this setting!
-	 */
-	au_writel(PSC_SEL_CLK_SERCLK, PSC1_BASE_ADDR + PSC_SEL_OFFSET);
-	au_sync();
-
-	au1xpsc_sample_ac97_dev = platform_device_alloc("soc-audio", -1);
-	if (!au1xpsc_sample_ac97_dev)
-		goto out;
-
-	au1xpsc_sample_ac97_dev->resource =
-		kmemdup(au1xpsc_psc1_res, sizeof(struct resource) *
-			ARRAY_SIZE(au1xpsc_psc1_res), GFP_KERNEL);
-	au1xpsc_sample_ac97_dev->num_resources = ARRAY_SIZE(au1xpsc_psc1_res);
-	au1xpsc_sample_ac97_dev->id = 1;
-
-	platform_set_drvdata(au1xpsc_sample_ac97_dev,
-			     &au1xpsc_sample_ac97_devdata);
-	au1xpsc_sample_ac97_devdata.dev = &au1xpsc_sample_ac97_dev->dev;
-	ret = platform_device_add(au1xpsc_sample_ac97_dev);
-
-	if (ret) {
-		platform_device_put(au1xpsc_sample_ac97_dev);
-		au1xpsc_sample_ac97_dev = NULL;
-	}
-
-out:
-	return ret;
-}
-
-static void __exit au1xpsc_sample_ac97_exit(void)
-{
-	platform_device_unregister(au1xpsc_sample_ac97_dev);
-}
-
-module_init(au1xpsc_sample_ac97_load);
-module_exit(au1xpsc_sample_ac97_exit);
-
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("Au1xxx PSC sample AC97 machine");
-MODULE_AUTHOR("Manuel Lauss <mano@roarinelk.homelinux.net>");
diff --git a/sound/soc/codecs/ak4104.c b/sound/soc/codecs/ak4104.c
index b9ef7e45891..b68d99fb6af 100644
--- a/sound/soc/codecs/ak4104.c
+++ b/sound/soc/codecs/ak4104.c
@@ -90,12 +90,10 @@ static int ak4104_spi_write(struct snd_soc_codec *codec, unsigned int reg,
 	if (reg >= codec->reg_cache_size)
 		return -EINVAL;
 
-	reg &= AK4104_REG_MASK;
-	reg |= AK4104_WRITE;
-
 	/* only write to the hardware if value has changed */
 	if (cache[reg] != value) {
-		u8 tmp[2] = { reg, value };
+		u8 tmp[2] = { (reg & AK4104_REG_MASK) | AK4104_WRITE, value };
+
 		if (spi_write(spi, tmp, sizeof(tmp))) {
 			dev_err(&spi->dev, "SPI write failed\n");
 			return -EIO;
diff --git a/sound/soc/codecs/uda1380.c b/sound/soc/codecs/uda1380.c
index a2763c2e734..9cd0a66b766 100644
--- a/sound/soc/codecs/uda1380.c
+++ b/sound/soc/codecs/uda1380.c
@@ -137,7 +137,7 @@ static void uda1380_flush_work(struct work_struct *work)
 {
 	int bit, reg;
 
-	for_each_bit(bit, &uda1380_cache_dirty, UDA1380_CACHEREGNUM - 0x10) {
+	for_each_set_bit(bit, &uda1380_cache_dirty, UDA1380_CACHEREGNUM - 0x10) {
 		reg = 0x10 + bit;
 		pr_debug("uda1380: flush reg %x val %x:\n", reg,
 				uda1380_read_reg_cache(uda1380_codec, reg));
diff --git a/sound/soc/codecs/wm8350.c b/sound/soc/codecs/wm8350.c
index 718ef912e75..df2c6d9617f 100644
--- a/sound/soc/codecs/wm8350.c
+++ b/sound/soc/codecs/wm8350.c
@@ -1349,7 +1349,7 @@ static irqreturn_t wm8350_hp_jack_handler(int irq, void *data)
 	int mask;
 	struct wm8350_jack_data *jack = NULL;
 
-	switch (irq) {
+	switch (irq - wm8350->irq_base) {
 	case WM8350_IRQ_CODEC_JCK_DET_L:
 		jack = &priv->hpl;
 		mask = WM8350_JACK_L_LVL;
@@ -1424,7 +1424,7 @@ int wm8350_hp_jack_detect(struct snd_soc_codec *codec, enum wm8350_jack which,
 	wm8350_set_bits(wm8350, WM8350_JACK_DETECT, ena);
 
 	/* Sync status */
-	wm8350_hp_jack_handler(irq, priv);
+	wm8350_hp_jack_handler(irq + wm8350->irq_base, priv);
 
 	return 0;
 }
@@ -1521,8 +1521,8 @@ static int wm8350_remove(struct platform_device *pdev)
 			  WM8350_JDL_ENA | WM8350_JDR_ENA);
 	wm8350_clear_bits(wm8350, WM8350_POWER_MGMT_4, WM8350_TOCLK_ENA);
 
-	wm8350_free_irq(wm8350, WM8350_IRQ_CODEC_JCK_DET_L);
-	wm8350_free_irq(wm8350, WM8350_IRQ_CODEC_JCK_DET_R);
+	wm8350_free_irq(wm8350, WM8350_IRQ_CODEC_JCK_DET_L, priv);
+	wm8350_free_irq(wm8350, WM8350_IRQ_CODEC_JCK_DET_R, priv);
 
 	priv->hpl.jack = NULL;
 	priv->hpr.jack = NULL;
diff --git a/sound/soc/fsl/efika-audio-fabric.c b/sound/soc/fsl/efika-audio-fabric.c
index 3326e2a1e86..1a5b8e0d6a3 100644
--- a/sound/soc/fsl/efika-audio-fabric.c
+++ b/sound/soc/fsl/efika-audio-fabric.c
@@ -55,7 +55,7 @@ static __init int efika_fabric_init(void)
 	struct platform_device *pdev;
 	int rc;
 
-	if (!machine_is_compatible("bplan,efika"))
+	if (!of_machine_is_compatible("bplan,efika"))
 		return -ENODEV;
 
 	card.platform = &mpc5200_audio_dma_platform;
diff --git a/sound/soc/fsl/pcm030-audio-fabric.c b/sound/soc/fsl/pcm030-audio-fabric.c
index b928ef7d28e..6644cba7cbf 100644
--- a/sound/soc/fsl/pcm030-audio-fabric.c
+++ b/sound/soc/fsl/pcm030-audio-fabric.c
@@ -55,7 +55,7 @@ static __init int pcm030_fabric_init(void)
 	struct platform_device *pdev;
 	int rc;
 
-	if (!machine_is_compatible("phytec,pcm030"))
+	if (!of_machine_is_compatible("phytec,pcm030"))
 		return -ENODEV;
 
 	card.platform = &mpc5200_audio_dma_platform;
diff --git a/sound/soc/imx/imx-pcm-fiq.c b/sound/soc/imx/imx-pcm-fiq.c
index 5532579ece4..d9cb9849b03 100644
--- a/sound/soc/imx/imx-pcm-fiq.c
+++ b/sound/soc/imx/imx-pcm-fiq.c
@@ -35,22 +35,25 @@
 struct imx_pcm_runtime_data {
 	int period;
 	int periods;
-	unsigned long dma_addr;
-	int dma;
 	unsigned long offset;
+	unsigned long last_offset;
 	unsigned long size;
-	unsigned long period_cnt;
-	void *buf;
 	struct timer_list timer;
-	int period_time;
+	int poll_time;
 };
 
+static inline void imx_ssi_set_next_poll(struct imx_pcm_runtime_data *iprtd)
+{
+	iprtd->timer.expires = jiffies + iprtd->poll_time;
+}
+
 static void imx_ssi_timer_callback(unsigned long data)
 {
 	struct snd_pcm_substream *substream = (void *)data;
 	struct snd_pcm_runtime *runtime = substream->runtime;
 	struct imx_pcm_runtime_data *iprtd = runtime->private_data;
 	struct pt_regs regs;
+	unsigned long delta;
 
 	get_fiq_regs(&regs);
 
@@ -59,9 +62,25 @@ static void imx_ssi_timer_callback(unsigned long data)
 	else
 		iprtd->offset = regs.ARM_r9 & 0xffff;
 
-	iprtd->timer.expires = jiffies + iprtd->period_time;
+	/* How much data have we transferred since the last period report? */
+	if (iprtd->offset >= iprtd->last_offset)
+		delta = iprtd->offset - iprtd->last_offset;
+	else
+		delta = runtime->buffer_size + iprtd->offset
+			- iprtd->last_offset;
+
+	/* If we've transferred at least a period then report it and
+	 * reset our poll time */
+	if (delta >= runtime->period_size) {
+		snd_pcm_period_elapsed(substream);
+		iprtd->last_offset = iprtd->offset;
+
+		imx_ssi_set_next_poll(iprtd);
+	}
+
+	/* Restart the timer; if we didn't report we'll run on the next tick */
 	add_timer(&iprtd->timer);
-	snd_pcm_period_elapsed(substream);
+
 }
 
 static struct fiq_handler fh = {
@@ -76,9 +95,10 @@ static int snd_imx_pcm_hw_params(struct snd_pcm_substream *substream,
 
 	iprtd->size = params_buffer_bytes(params);
 	iprtd->periods = params_periods(params);
-	iprtd->period = params_period_bytes(params);
+	iprtd->period = params_period_bytes(params) ;
 	iprtd->offset = 0;
-	iprtd->period_time = HZ / (params_rate(params) / params_period_size(params));
+	iprtd->last_offset = 0;
+	iprtd->poll_time = HZ / (params_rate(params) / params_period_size(params));
 
 	snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
 
@@ -114,7 +134,7 @@ static int snd_imx_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
 	case SNDRV_PCM_TRIGGER_START:
 	case SNDRV_PCM_TRIGGER_RESUME:
 	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
-		iprtd->timer.expires = jiffies + iprtd->period_time;
+		imx_ssi_set_next_poll(iprtd);
 		add_timer(&iprtd->timer);
 		if (++fiq_enable == 1)
 			enable_fiq(imx_pcm_fiq);
diff --git a/sound/soc/omap/Kconfig b/sound/soc/omap/Kconfig
index 18ebdc7d0a5..f11963c2187 100644
--- a/sound/soc/omap/Kconfig
+++ b/sound/soc/omap/Kconfig
@@ -6,6 +6,9 @@ config SND_OMAP_SOC_MCBSP
 	tristate
 	select OMAP_MCBSP
 
+config SND_OMAP_SOC_MCPDM
+	tristate
+
 config SND_OMAP_SOC_N810
 	tristate "SoC Audio support for Nokia N810"
 	depends on SND_OMAP_SOC && MACH_NOKIA_N810 && I2C
diff --git a/sound/soc/omap/Makefile b/sound/soc/omap/Makefile
index 19283e5edfb..0bc00ca14b3 100644
--- a/sound/soc/omap/Makefile
+++ b/sound/soc/omap/Makefile
@@ -1,9 +1,11 @@
 # OMAP Platform Support
 snd-soc-omap-objs := omap-pcm.o
 snd-soc-omap-mcbsp-objs := omap-mcbsp.o
+snd-soc-omap-mcpdm-objs := omap-mcpdm.o mcpdm.o
 
 obj-$(CONFIG_SND_OMAP_SOC) += snd-soc-omap.o
 obj-$(CONFIG_SND_OMAP_SOC_MCBSP) += snd-soc-omap-mcbsp.o
+obj-$(CONFIG_SND_OMAP_SOC_MCPDM) += snd-soc-omap-mcpdm.o
 
 # OMAP Machine Support
 snd-soc-n810-objs := n810.o
diff --git a/sound/soc/omap/mcpdm.c b/sound/soc/omap/mcpdm.c
new file mode 100644
index 00000000000..ad8df6cfae8
--- /dev/null
+++ b/sound/soc/omap/mcpdm.c
@@ -0,0 +1,484 @@
+/*
+ * mcpdm.c  --  McPDM interface driver
+ *
+ * Author: Jorge Eduardo Candelaria <x0107209@ti.com>
+ * Copyright (C) 2009 - Texas Instruments, Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/platform_device.h>
+#include <linux/wait.h>
+#include <linux/interrupt.h>
+#include <linux/err.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+
+#include "mcpdm.h"
+
+static struct omap_mcpdm *mcpdm;
+
+static inline void omap_mcpdm_write(u16 reg, u32 val)
+{
+       __raw_writel(val, mcpdm->io_base + reg);
+}
+
+static inline int omap_mcpdm_read(u16 reg)
+{
+       return __raw_readl(mcpdm->io_base + reg);
+}
+
+static void omap_mcpdm_reg_dump(void)
+{
+       dev_dbg(mcpdm->dev, "***********************\n");
+       dev_dbg(mcpdm->dev, "IRQSTATUS_RAW:  0x%04x\n",
+                       omap_mcpdm_read(MCPDM_IRQSTATUS_RAW));
+       dev_dbg(mcpdm->dev, "IRQSTATUS:  0x%04x\n",
+                       omap_mcpdm_read(MCPDM_IRQSTATUS));
+       dev_dbg(mcpdm->dev, "IRQENABLE_SET:  0x%04x\n",
+                       omap_mcpdm_read(MCPDM_IRQENABLE_SET));
+       dev_dbg(mcpdm->dev, "IRQENABLE_CLR:  0x%04x\n",
+                       omap_mcpdm_read(MCPDM_IRQENABLE_CLR));
+       dev_dbg(mcpdm->dev, "IRQWAKE_EN: 0x%04x\n",
+                       omap_mcpdm_read(MCPDM_IRQWAKE_EN));
+       dev_dbg(mcpdm->dev, "DMAENABLE_SET: 0x%04x\n",
+                       omap_mcpdm_read(MCPDM_DMAENABLE_SET));
+       dev_dbg(mcpdm->dev, "DMAENABLE_CLR:  0x%04x\n",
+                       omap_mcpdm_read(MCPDM_DMAENABLE_CLR));
+       dev_dbg(mcpdm->dev, "DMAWAKEEN:  0x%04x\n",
+                       omap_mcpdm_read(MCPDM_DMAWAKEEN));
+       dev_dbg(mcpdm->dev, "CTRL:  0x%04x\n",
+                       omap_mcpdm_read(MCPDM_CTRL));
+       dev_dbg(mcpdm->dev, "DN_DATA:  0x%04x\n",
+                       omap_mcpdm_read(MCPDM_DN_DATA));
+       dev_dbg(mcpdm->dev, "UP_DATA: 0x%04x\n",
+                       omap_mcpdm_read(MCPDM_UP_DATA));
+       dev_dbg(mcpdm->dev, "FIFO_CTRL_DN: 0x%04x\n",
+                       omap_mcpdm_read(MCPDM_FIFO_CTRL_DN));
+       dev_dbg(mcpdm->dev, "FIFO_CTRL_UP:  0x%04x\n",
+                       omap_mcpdm_read(MCPDM_FIFO_CTRL_UP));
+       dev_dbg(mcpdm->dev, "DN_OFFSET:  0x%04x\n",
+                       omap_mcpdm_read(MCPDM_DN_OFFSET));
+       dev_dbg(mcpdm->dev, "***********************\n");
+}
+
+/*
+ * Takes the McPDM module in and out of reset state.
+ * Uplink and downlink can be reset individually.
+ */
+static void omap_mcpdm_reset_capture(int reset)
+{
+       int ctrl = omap_mcpdm_read(MCPDM_CTRL);
+
+       if (reset)
+               ctrl |= SW_UP_RST;
+       else
+               ctrl &= ~SW_UP_RST;
+
+       omap_mcpdm_write(MCPDM_CTRL, ctrl);
+}
+
+static void omap_mcpdm_reset_playback(int reset)
+{
+       int ctrl = omap_mcpdm_read(MCPDM_CTRL);
+
+       if (reset)
+               ctrl |= SW_DN_RST;
+       else
+               ctrl &= ~SW_DN_RST;
+
+       omap_mcpdm_write(MCPDM_CTRL, ctrl);
+}
+
+/*
+ * Enables the transfer through the PDM interface to/from the Phoenix
+ * codec by enabling the corresponding UP or DN channels.
+ */
+void omap_mcpdm_start(int stream)
+{
+       int ctrl = omap_mcpdm_read(MCPDM_CTRL);
+
+       if (stream)
+               ctrl |= mcpdm->up_channels;
+       else
+               ctrl |= mcpdm->dn_channels;
+
+       omap_mcpdm_write(MCPDM_CTRL, ctrl);
+}
+
+/*
+ * Disables the transfer through the PDM interface to/from the Phoenix
+ * codec by disabling the corresponding UP or DN channels.
+ */
+void omap_mcpdm_stop(int stream)
+{
+       int ctrl = omap_mcpdm_read(MCPDM_CTRL);
+
+       if (stream)
+               ctrl &= ~mcpdm->up_channels;
+       else
+               ctrl &= ~mcpdm->dn_channels;
+
+       omap_mcpdm_write(MCPDM_CTRL, ctrl);
+}
+
+/*
+ * Configures McPDM uplink for audio recording.
+ * This function should be called before omap_mcpdm_start.
+ */
+int omap_mcpdm_capture_open(struct omap_mcpdm_link *uplink)
+{
+       int irq_mask = 0;
+       int ctrl;
+
+       if (!uplink)
+               return -EINVAL;
+
+       mcpdm->uplink = uplink;
+
+       /* Enable irq request generation */
+       irq_mask |= uplink->irq_mask & MCPDM_UPLINK_IRQ_MASK;
+       omap_mcpdm_write(MCPDM_IRQENABLE_SET, irq_mask);
+
+       /* Configure uplink threshold */
+       if (uplink->threshold > UP_THRES_MAX)
+               uplink->threshold = UP_THRES_MAX;
+
+       omap_mcpdm_write(MCPDM_FIFO_CTRL_UP, uplink->threshold);
+
+       /* Configure DMA controller */
+       omap_mcpdm_write(MCPDM_DMAENABLE_SET, DMA_UP_ENABLE);
+
+       /* Set pdm out format */
+       ctrl = omap_mcpdm_read(MCPDM_CTRL);
+       ctrl &= ~PDMOUTFORMAT;
+       ctrl |= uplink->format & PDMOUTFORMAT;
+
+       /* Uplink channels */
+       mcpdm->up_channels = uplink->channels & (PDM_UP_MASK | PDM_STATUS_MASK);
+
+       omap_mcpdm_write(MCPDM_CTRL, ctrl);
+
+       return 0;
+}
+
+/*
+ * Configures McPDM downlink for audio playback.
+ * This function should be called before omap_mcpdm_start.
+ */
+int omap_mcpdm_playback_open(struct omap_mcpdm_link *downlink)
+{
+       int irq_mask = 0;
+       int ctrl;
+
+       if (!downlink)
+               return -EINVAL;
+
+       mcpdm->downlink = downlink;
+
+       /* Enable irq request generation */
+       irq_mask |= downlink->irq_mask & MCPDM_DOWNLINK_IRQ_MASK;
+       omap_mcpdm_write(MCPDM_IRQENABLE_SET, irq_mask);
+
+       /* Configure uplink threshold */
+       if (downlink->threshold > DN_THRES_MAX)
+               downlink->threshold = DN_THRES_MAX;
+
+       omap_mcpdm_write(MCPDM_FIFO_CTRL_DN, downlink->threshold);
+
+       /* Enable DMA request generation */
+       omap_mcpdm_write(MCPDM_DMAENABLE_SET, DMA_DN_ENABLE);
+
+       /* Set pdm out format */
+       ctrl = omap_mcpdm_read(MCPDM_CTRL);
+       ctrl &= ~PDMOUTFORMAT;
+       ctrl |= downlink->format & PDMOUTFORMAT;
+
+       /* Downlink channels */
+       mcpdm->dn_channels = downlink->channels & (PDM_DN_MASK | PDM_CMD_MASK);
+
+       omap_mcpdm_write(MCPDM_CTRL, ctrl);
+
+       return 0;
+}
+
+/*
+ * Cleans McPDM uplink configuration.
+ * This function should be called when the stream is closed.
+ */
+int omap_mcpdm_capture_close(struct omap_mcpdm_link *uplink)
+{
+       int irq_mask = 0;
+
+       if (!uplink)
+               return -EINVAL;
+
+       /* Disable irq request generation */
+       irq_mask |= uplink->irq_mask & MCPDM_UPLINK_IRQ_MASK;
+       omap_mcpdm_write(MCPDM_IRQENABLE_CLR, irq_mask);
+
+       /* Disable DMA request generation */
+       omap_mcpdm_write(MCPDM_DMAENABLE_CLR, DMA_UP_ENABLE);
+
+       /* Clear Downlink channels */
+       mcpdm->up_channels = 0;
+
+       mcpdm->uplink = NULL;
+
+       return 0;
+}
+
+/*
+ * Cleans McPDM downlink configuration.
+ * This function should be called when the stream is closed.
+ */
+int omap_mcpdm_playback_close(struct omap_mcpdm_link *downlink)
+{
+       int irq_mask = 0;
+
+       if (!downlink)
+               return -EINVAL;
+
+       /* Disable irq request generation */
+       irq_mask |= downlink->irq_mask & MCPDM_DOWNLINK_IRQ_MASK;
+       omap_mcpdm_write(MCPDM_IRQENABLE_CLR, irq_mask);
+
+       /* Disable DMA request generation */
+       omap_mcpdm_write(MCPDM_DMAENABLE_CLR, DMA_DN_ENABLE);
+
+       /* clear Downlink channels */
+       mcpdm->dn_channels = 0;
+
+       mcpdm->downlink = NULL;
+
+       return 0;
+}
+
+static irqreturn_t omap_mcpdm_irq_handler(int irq, void *dev_id)
+{
+       struct omap_mcpdm *mcpdm_irq = dev_id;
+       int irq_status;
+
+       irq_status = omap_mcpdm_read(MCPDM_IRQSTATUS);
+
+       /* Acknowledge irq event