Merge branch 'topic/asoc' into to-push

1 files changed, 624 insertions, 216 deletions

diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 16c7453f4946..b098c0b4c584 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -26,6 +26,7 @@
 #include <linux/delay.h>
 #include <linux/pm.h>
 #include <linux/bitops.h>
+#include <linux/debugfs.h>
 #include <linux/platform_device.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
@@ -34,18 +35,23 @@
 #include <sound/soc-dapm.h>
 #include <sound/initval.h>
 
-/* debug */
-#define SOC_DEBUG 0
-#if SOC_DEBUG
-#define dbg(format, arg...) printk(format, ## arg)
-#else
-#define dbg(format, arg...)
-#endif
-
 static DEFINE_MUTEX(pcm_mutex);
 static DEFINE_MUTEX(io_mutex);
 static DECLARE_WAIT_QUEUE_HEAD(soc_pm_waitq);
 
+#ifdef CONFIG_DEBUG_FS
+static struct dentry *debugfs_root;
+#endif
+
+static DEFINE_MUTEX(client_mutex);
+static LIST_HEAD(card_list);
+static LIST_HEAD(dai_list);
+static LIST_HEAD(platform_list);
+static LIST_HEAD(codec_list);
+
+static int snd_soc_register_card(struct snd_soc_card *card);
+static int snd_soc_unregister_card(struct snd_soc_card *card);
+
 /*
  * This is a timeout to do a DAPM powerdown after a stream is closed().
  * It can be used to eliminate pops between different playback streams, e.g.
@@ -107,20 +113,6 @@ static int soc_ac97_dev_register(struct snd_soc_codec *codec)
 }
 #endif
 
-static inline const char *get_dai_name(int type)
-{
-	switch (type) {
-	case SND_SOC_DAI_AC97_BUS:
-	case SND_SOC_DAI_AC97:
-		return "AC97";
-	case SND_SOC_DAI_I2S:
-		return "I2S";
-	case SND_SOC_DAI_PCM:
-		return "PCM";
-	}
-	return NULL;
-}
-
 /*
  * Called by ALSA when a PCM substream is opened, the runtime->hw record is
  * then initialized and any private data can be allocated. This also calls
@@ -130,9 +122,10 @@ static int soc_pcm_open(struct snd_pcm_substream *substream)
 {
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
 	struct snd_soc_device *socdev = rtd->socdev;
+	struct snd_soc_card *card = socdev->card;
 	struct snd_pcm_runtime *runtime = substream->runtime;
 	struct snd_soc_dai_link *machine = rtd->dai;
-	struct snd_soc_platform *platform = socdev->platform;
+	struct snd_soc_platform *platform = card->platform;
 	struct snd_soc_dai *cpu_dai = machine->cpu_dai;
 	struct snd_soc_dai *codec_dai = machine->codec_dai;
 	int ret = 0;
@@ -141,7 +134,7 @@ static int soc_pcm_open(struct snd_pcm_substream *substream)
 
 	/* startup the audio subsystem */
 	if (cpu_dai->ops.startup) {
-		ret = cpu_dai->ops.startup(substream);
+		ret = cpu_dai->ops.startup(substream, cpu_dai);
 		if (ret < 0) {
 			printk(KERN_ERR "asoc: can't open interface %s\n",
 				cpu_dai->name);
@@ -158,7 +151,7 @@ static int soc_pcm_open(struct snd_pcm_substream *substream)
 	}
 
 	if (codec_dai->ops.startup) {
-		ret = codec_dai->ops.startup(substream);
+		ret = codec_dai->ops.startup(substream, codec_dai);
 		if (ret < 0) {
 			printk(KERN_ERR "asoc: can't open codec %s\n",
 				codec_dai->name);
@@ -228,12 +221,12 @@ static int soc_pcm_open(struct snd_pcm_substream *substream)
 		goto machine_err;
 	}
 
-	dbg("asoc: %s <-> %s info:\n", codec_dai->name, cpu_dai->name);
-	dbg("asoc: rate mask 0x%x\n", runtime->hw.rates);
-	dbg("asoc: min ch %d max ch %d\n", runtime->hw.channels_min,
-		runtime->hw.channels_max);
-	dbg("asoc: min rate %d max rate %d\n", runtime->hw.rate_min,
-		runtime->hw.rate_max);
+	pr_debug("asoc: %s <-> %s info:\n", codec_dai->name, cpu_dai->name);
+	pr_debug("asoc: rate mask 0x%x\n", runtime->hw.rates);
+	pr_debug("asoc: min ch %d max ch %d\n", runtime->hw.channels_min,
+		 runtime->hw.channels_max);
+	pr_debug("asoc: min rate %d max rate %d\n", runtime->hw.rate_min,
+		 runtime->hw.rate_max);
 
 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 		cpu_dai->playback.active = codec_dai->playback.active = 1;
@@ -255,7 +248,7 @@ codec_dai_err:
 
 platform_err:
 	if (cpu_dai->ops.shutdown)
-		cpu_dai->ops.shutdown(substream);
+		cpu_dai->ops.shutdown(substream, cpu_dai);
 out:
 	mutex_unlock(&pcm_mutex);
 	return ret;
@@ -268,8 +261,9 @@ out:
  */
 static void close_delayed_work(struct work_struct *work)
 {
-	struct snd_soc_device *socdev =
-		container_of(work, struct snd_soc_device, delayed_work.work);
+	struct snd_soc_card *card = container_of(work, struct snd_soc_card,
+						 delayed_work.work);
+	struct snd_soc_device *socdev = card->socdev;
 	struct snd_soc_codec *codec = socdev->codec;
 	struct snd_soc_dai *codec_dai;
 	int i;
@@ -278,18 +272,18 @@ static void close_delayed_work(struct work_struct *work)
 	for (i = 0; i < codec->num_dai; i++) {
 		codec_dai = &codec->dai[i];
 
-		dbg("pop wq checking: %s status: %s waiting: %s\n",
-			codec_dai->playback.stream_name,
-			codec_dai->playback.active ? "active" : "inactive",
-			codec_dai->pop_wait ? "yes" : "no");
+		pr_debug("pop wq checking: %s status: %s waiting: %s\n",
+			 codec_dai->playback.stream_name,
+			 codec_dai->playback.active ? "active" : "inactive",
+			 codec_dai->pop_wait ? "yes" : "no");
 
 		/* are we waiting on this codec DAI stream */
 		if (codec_dai->pop_wait == 1) {
 
 			/* Reduce power if no longer active */
 			if (codec->active == 0) {
-				dbg("pop wq D1 %s %s\n", codec->name,
-					codec_dai->playback.stream_name);
+				pr_debug("pop wq D1 %s %s\n", codec->name,
+					 codec_dai->playback.stream_name);
 				snd_soc_dapm_set_bias_level(socdev,
 					SND_SOC_BIAS_PREPARE);
 			}
@@ -301,8 +295,8 @@ static void close_delayed_work(struct work_struct *work)
 
 			/* Fall into standby if no longer active */
 			if (codec->active == 0) {
-				dbg("pop wq D3 %s %s\n", codec->name,
-					codec_dai->playback.stream_name);
+				pr_debug("pop wq D3 %s %s\n", codec->name,
+					 codec_dai->playback.stream_name);
 				snd_soc_dapm_set_bias_level(socdev,
 					SND_SOC_BIAS_STANDBY);
 			}
@@ -320,8 +314,9 @@ static int soc_codec_close(struct snd_pcm_substream *substream)
 {
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
 	struct snd_soc_device *socdev = rtd->socdev;
+	struct snd_soc_card *card = socdev->card;
 	struct snd_soc_dai_link *machine = rtd->dai;
-	struct snd_soc_platform *platform = socdev->platform;
+	struct snd_soc_platform *platform = card->platform;
 	struct snd_soc_dai *cpu_dai = machine->cpu_dai;
 	struct snd_soc_dai *codec_dai = machine->codec_dai;
 	struct snd_soc_codec *codec = socdev->codec;
@@ -346,10 +341,10 @@ static int soc_codec_close(struct snd_pcm_substream *substream)
 		snd_soc_dai_digital_mute(codec_dai, 1);
 
 	if (cpu_dai->ops.shutdown)
-		cpu_dai->ops.shutdown(substream);
+		cpu_dai->ops.shutdown(substream, cpu_dai);
 
 	if (codec_dai->ops.shutdown)
-		codec_dai->ops.shutdown(substream);
+		codec_dai->ops.shutdown(substream, codec_dai);
 
 	if (machine->ops && machine->ops->shutdown)
 		machine->ops->shutdown(substream);
@@ -361,7 +356,7 @@ static int soc_codec_close(struct snd_pcm_substream *substream)
 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
 		/* start delayed pop wq here for playback streams */
 		codec_dai->pop_wait = 1;
-		schedule_delayed_work(&socdev->delayed_work,
+		schedule_delayed_work(&card->delayed_work,
 			msecs_to_jiffies(pmdown_time));
 	} else {
 		/* capture streams can be powered down now */
@@ -387,8 +382,9 @@ static int soc_pcm_prepare(struct snd_pcm_substream *substream)
 {
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
 	struct snd_soc_device *socdev = rtd->socdev;
+	struct snd_soc_card *card = socdev->card;
 	struct snd_soc_dai_link *machine = rtd->dai;
-	struct snd_soc_platform *platform = socdev->platform;
+	struct snd_soc_platform *platform = card->platform;
 	struct snd_soc_dai *cpu_dai = machine->cpu_dai;
 	struct snd_soc_dai *codec_dai = machine->codec_dai;
 	struct snd_soc_codec *codec = socdev->codec;
@@ -413,7 +409,7 @@ static int soc_pcm_prepare(struct snd_pcm_substream *substream)
 	}
 
 	if (codec_dai->ops.prepare) {
-		ret = codec_dai->ops.prepare(substream);
+		ret = codec_dai->ops.prepare(substream, codec_dai);
 		if (ret < 0) {
 			printk(KERN_ERR "asoc: codec DAI prepare error\n");
 			goto out;
@@ -421,58 +417,49 @@ static int soc_pcm_prepare(struct snd_pcm_substream *substream)
 	}
 
 	if (cpu_dai->ops.prepare) {
-		ret = cpu_dai->ops.prepare(substream);
+		ret = cpu_dai->ops.prepare(substream, cpu_dai);
 		if (ret < 0) {
 			printk(KERN_ERR "asoc: cpu DAI prepare error\n");
 			goto out;
 		}
 	}
 
-	/* we only want to start a DAPM playback stream if we are not waiting
-	 * on an existing one stopping */
-	if (codec_dai->pop_wait) {
-		/* we are waiting for the delayed work to start */
-		if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
-				snd_soc_dapm_stream_event(socdev->codec,
-					codec_dai->capture.stream_name,
-					SND_SOC_DAPM_STREAM_START);
-		else {
-			codec_dai->pop_wait = 0;
-			cancel_delayed_work(&socdev->delayed_work);
-			snd_soc_dai_digital_mute(codec_dai, 0);
-		}
-	} else {
-		/* no delayed work - do we need to power up codec */
-		if (codec->bias_level != SND_SOC_BIAS_ON) {
+	/* cancel any delayed stream shutdown that is pending */
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK &&
+	    codec_dai->pop_wait) {
+		codec_dai->pop_wait = 0;
+		cancel_delayed_work(&card->delayed_work);
+	}
 
-			snd_soc_dapm_set_bias_level(socdev,
-						    SND_SOC_BIAS_PREPARE);
+	/* do we need to power up codec */
+	if (codec->bias_level != SND_SOC_BIAS_ON) {
+		snd_soc_dapm_set_bias_level(socdev,
+					    SND_SOC_BIAS_PREPARE);
 
-			if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
-				snd_soc_dapm_stream_event(codec,
+		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+			snd_soc_dapm_stream_event(codec,
 					codec_dai->playback.stream_name,
 					SND_SOC_DAPM_STREAM_START);
-			else
-				snd_soc_dapm_stream_event(codec,
+		else
+			snd_soc_dapm_stream_event(codec,
 					codec_dai->capture.stream_name,
 					SND_SOC_DAPM_STREAM_START);
 
-			snd_soc_dapm_set_bias_level(socdev, SND_SOC_BIAS_ON);
-			snd_soc_dai_digital_mute(codec_dai, 0);
+		snd_soc_dapm_set_bias_level(socdev, SND_SOC_BIAS_ON);
+		snd_soc_dai_digital_mute(codec_dai, 0);
 
-		} else {
-			/* codec already powered - power on widgets */
-			if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
-				snd_soc_dapm_stream_event(codec,
+	} else {
+		/* codec already powered - power on widgets */
+		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+			snd_soc_dapm_stream_event(codec,
 					codec_dai->playback.stream_name,
 					SND_SOC_DAPM_STREAM_START);
-			else
-				snd_soc_dapm_stream_event(codec,
+		else
+			snd_soc_dapm_stream_event(codec,
 					codec_dai->capture.stream_name,
 					SND_SOC_DAPM_STREAM_START);
 
-			snd_soc_dai_digital_mute(codec_dai, 0);
-		}
+		snd_soc_dai_digital_mute(codec_dai, 0);
 	}
 
 out:
@@ -491,7 +478,8 @@ static int soc_pcm_hw_params(struct snd_pcm_substream *substream,
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
 	struct snd_soc_device *socdev = rtd->socdev;
 	struct snd_soc_dai_link *machine = rtd->dai;
-	struct snd_soc_platform *platform = socdev->platform;
+	struct snd_soc_card *card = socdev->card;
+	struct snd_soc_platform *platform = card->platform;
 	struct snd_soc_dai *cpu_dai = machine->cpu_dai;
 	struct snd_soc_dai *codec_dai = machine->codec_dai;
 	int ret = 0;
@@ -507,7 +495,7 @@ static int soc_pcm_hw_params(struct snd_pcm_substream *substream,
 	}
 
 	if (codec_dai->ops.hw_params) {
-		ret = codec_dai->ops.hw_params(substream, params);
+		ret = codec_dai->ops.hw_params(substream, params, codec_dai);
 		if (ret < 0) {
 			printk(KERN_ERR "asoc: can't set codec %s hw params\n",
 				codec_dai->name);
@@ -516,7 +504,7 @@ static int soc_pcm_hw_params(struct snd_pcm_substream *substream,
 	}
 
 	if (cpu_dai->ops.hw_params) {
-		ret = cpu_dai->ops.hw_params(substream, params);
+		ret = cpu_dai->ops.hw_params(substream, params, cpu_dai);
 		if (ret < 0) {
 			printk(KERN_ERR "asoc: interface %s hw params failed\n",
 				cpu_dai->name);
@@ -539,11 +527,11 @@ out:
 
 platform_err:
 	if (cpu_dai->ops.hw_free)
-		cpu_dai->ops.hw_free(substream);
+		cpu_dai->ops.hw_free(substream, cpu_dai);
 
 interface_err:
 	if (codec_dai->ops.hw_free)
-		codec_dai->ops.hw_free(substream);
+		codec_dai->ops.hw_free(substream, codec_dai);
 
 codec_err:
 	if (machine->ops && machine->ops->hw_free)
@@ -561,7 +549,8 @@ static int soc_pcm_hw_free(struct snd_pcm_substream *substream)
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
 	struct snd_soc_device *socdev = rtd->socdev;
 	struct snd_soc_dai_link *machine = rtd->dai;
-	struct snd_soc_platform *platform = socdev->platform;
+	struct snd_soc_card *card = socdev->card;
+	struct snd_soc_platform *platform = card->platform;
 	struct snd_soc_dai *cpu_dai = machine->cpu_dai;
 	struct snd_soc_dai *codec_dai = machine->codec_dai;
 	struct snd_soc_codec *codec = socdev->codec;
@@ -582,10 +571,10 @@ static int soc_pcm_hw_free(struct snd_pcm_substream *substream)
 
 	/* now free hw params for the DAI's  */
 	if (codec_dai->ops.hw_free)
-		codec_dai->ops.hw_free(substream);
+		codec_dai->ops.hw_free(substream, codec_dai);
 
 	if (cpu_dai->ops.hw_free)
-		cpu_dai->ops.hw_free(substream);
+		cpu_dai->ops.hw_free(substream, cpu_dai);
 
 	mutex_unlock(&pcm_mutex);
 	return 0;
@@ -595,14 +584,15 @@ static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
 {
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
 	struct snd_soc_device *socdev = rtd->socdev;
+	struct snd_soc_card *card= socdev->card;
 	struct snd_soc_dai_link *machine = rtd->dai;
-	struct snd_soc_platform *platform = socdev->platform;
+	struct snd_soc_platform *platform = card->platform;
 	struct snd_soc_dai *cpu_dai = machine->cpu_dai;
 	struct snd_soc_dai *codec_dai = machine->codec_dai;
 	int ret;
 
 	if (codec_dai->ops.trigger) {
-		ret = codec_dai->ops.trigger(substream, cmd);
+		ret = codec_dai->ops.trigger(substream, cmd, codec_dai);
 		if (ret < 0)
 			return ret;
 	}
@@ -614,7 +604,7 @@ static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
 	}
 
 	if (cpu_dai->ops.trigger) {
-		ret = cpu_dai->ops.trigger(substream, cmd);
+		ret = cpu_dai->ops.trigger(substream, cmd, cpu_dai);
 		if (ret < 0)
 			return ret;
 	}
@@ -636,8 +626,8 @@ static struct snd_pcm_ops soc_pcm_ops = {
 static int soc_suspend(struct platform_device *pdev, pm_message_t state)
 {
 	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
-	struct snd_soc_machine *machine = socdev->machine;
-	struct snd_soc_platform *platform = socdev->platform;
+	struct snd_soc_card *card = socdev->card;
+	struct snd_soc_platform *platform = card->platform;
 	struct snd_soc_codec_device *codec_dev = socdev->codec_dev;
 	struct snd_soc_codec *codec = socdev->codec;
 	int i;
@@ -653,29 +643,29 @@ static int soc_suspend(struct platform_device *pdev, pm_message_t state)
 	snd_power_change_state(codec->card, SNDRV_CTL_POWER_D3hot);
 
 	/* mute any active DAC's */
-	for (i = 0; i < machine->num_links; i++) {
-		struct snd_soc_dai *dai = machine->dai_link[i].codec_dai;
-		if (dai->dai_ops.digital_mute && dai->playback.active)
-			dai->dai_ops.digital_mute(dai, 1);
+	for (i = 0; i < card->num_links; i++) {
+		struct snd_soc_dai *dai = card->dai_link[i].codec_dai;
+		if (dai->ops.digital_mute && dai->playback.active)
+			dai->ops.digital_mute(dai, 1);
 	}
 
 	/* suspend all pcms */
-	for (i = 0; i < machine->num_links; i++)
-		snd_pcm_suspend_all(machine->dai_link[i].pcm);
+	for (i = 0; i < card->num_links; i++)
+		snd_pcm_suspend_all(card->dai_link[i].pcm);
 
-	if (machine->suspend_pre)
-		machine->suspend_pre(pdev, state);
+	if (card->suspend_pre)
+		card->suspend_pre(pdev, state);
 
-	for (i = 0; i < machine->num_links; i++) {
-		struct snd_soc_dai  *cpu_dai = machine->dai_link[i].cpu_dai;
-		if (cpu_dai->suspend && cpu_dai->type != SND_SOC_DAI_AC97)
-			cpu_dai->suspend(pdev, cpu_dai);
+	for (i = 0; i < card->num_links; i++) {
+		struct snd_soc_dai  *cpu_dai = card->dai_link[i].cpu_dai;
+		if (cpu_dai->suspend && !cpu_dai->ac97_control)
+			cpu_dai->suspend(cpu_dai);
 		if (platform->suspend)
-			platform->suspend(pdev, cpu_dai);
+			platform->suspend(cpu_dai);
 	}
 
 	/* close any waiting streams and save state */
-	run_delayed_work(&socdev->delayed_work);
+	run_delayed_work(&card->delayed_work);
 	codec->suspend_bias_level = codec->bias_level;
 
 	for (i = 0; i < codec->num_dai; i++) {
@@ -692,14 +682,14 @@ static int soc_suspend(struct platform_device *pdev, pm_message_t state)
 	if (codec_dev->suspend)
 		codec_dev->suspend(pdev, state);
 
-	for (i = 0; i < machine->num_links; i++) {
-		struct snd_soc_dai *cpu_dai = machine->dai_link[i].cpu_dai;
-		if (cpu_dai->suspend && cpu_dai->type == SND_SOC_DAI_AC97)
-			cpu_dai->suspend(pdev, cpu_dai);
+	for (i = 0; i < card->num_links; i++) {
+		struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai;
+		if (cpu_dai->suspend && cpu_dai->ac97_control)
+			cpu_dai->suspend(cpu_dai);
 	}
 
-	if (machine->suspend_post)
-		machine->suspend_post(pdev, state);
+	if (card->suspend_post)
+		card->suspend_post(pdev, state);
 
 	return 0;
 }
@@ -709,11 +699,11 @@ static int soc_suspend(struct platform_device *pdev, pm_message_t state)
  */
 static void soc_resume_deferred(struct work_struct *work)
 {
-	struct snd_soc_device *socdev = container_of(work,
-						     struct snd_soc_device,
-						     deferred_resume_work);
-	struct snd_soc_machine *machine = socdev->machine;
-	struct snd_soc_platform *platform = socdev->platform;
+	struct snd_soc_card *card = container_of(work,
+						 struct snd_soc_card,
+						 deferred_resume_work);
+	struct snd_soc_device *socdev = card->socdev;
+	struct snd_soc_platform *platform = card->platform;
 	struct snd_soc_codec_device *codec_dev = socdev->codec_dev;
 	struct snd_soc_codec *codec = socdev->codec;
 	struct platform_device *pdev = to_platform_device(socdev->dev);
@@ -723,15 +713,15 @@ static void soc_resume_deferred(struct work_struct *work)
 	 * so userspace apps are blocked from touching us
 	 */
 
-	dev_info(socdev->dev, "starting resume work\n");
+	dev_dbg(socdev->dev, "starting resume work\n");
 
-	if (machine->resume_pre)
-		machine->resume_pre(pdev);
+	if (card->resume_pre)
+		card->resume_pre(pdev);
 
-	for (i = 0; i < machine->num_links; i++) {
-		struct snd_soc_dai *cpu_dai = machine->dai_link[i].cpu_dai;
-		if (cpu_dai->resume && cpu_dai->type == SND_SOC_DAI_AC97)
-			cpu_dai->resume(pdev, cpu_dai);
+	for (i = 0; i < card->num_links; i++) {
+		struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai;
+		if (cpu_dai->resume && cpu_dai->ac97_control)
+			cpu_dai->resume(cpu_dai);
 	}
 
 	if (codec_dev->resume)
@@ -749,24 +739,24 @@ static void soc_resume_deferred(struct work_struct *work)
 	}
 
 	/* unmute any active DACs */
-	for (i = 0; i < machine->num_links; i++) {
-		struct snd_soc_dai *dai = machine->dai_link[i].codec_dai;
-		if (dai->dai_ops.digital_mute && dai->playback.active)
-			dai->dai_ops.digital_mute(dai, 0);
+	for (i = 0; i < card->num_links; i++) {
+		struct snd_soc_dai *dai = card->dai_link[i].codec_dai;
+		if (dai->ops.digital_mute && dai->playback.active)
+			dai->ops.digital_mute(dai, 0);
 	}
 
-	for (i = 0; i < machine->num_links; i++) {
-		struct snd_soc_dai *cpu_dai = machine->dai_link[i].cpu_dai;
-		if (cpu_dai->resume && cpu_dai->type != SND_SOC_DAI_AC97)
-			cpu_dai->resume(pdev, cpu_dai);
+	for (i = 0; i < card->num_links; i++) {
+		struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai;
+		if (cpu_dai->resume && !cpu_dai->ac97_control)
+			cpu_dai->resume(cpu_dai);
 		if (platform->resume)
-			platform->resume(pdev, cpu_dai);
+			platform->resume(cpu_dai);
 	}
 
-	if (machine->resume_post)
-		machine->resume_post(pdev);
+	if (card->resume_post)
+		card->resume_post(pdev);
 
-	dev_info(socdev->dev, "resume work completed\n");
+	dev_dbg(socdev->dev, "resume work completed\n");
 
 	/* userspace can access us now we are back as we were before */
 	snd_power_change_state(codec->card, SNDRV_CTL_POWER_D0);
@@ -776,11 +766,12 @@ static void soc_resume_deferred(struct work_struct *work)
 static int soc_resume(struct platform_device *pdev)
 {
 	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+	struct snd_soc_card *card = socdev->card;
 
-	dev_info(socdev->dev, "scheduling resume work\n");
+	dev_dbg(socdev->dev, "scheduling resume work\n");
 
-	if (!schedule_work(&socdev->deferred_resume_work))
-		dev_err(socdev->dev, "work item may be lost\n");
+	if (!schedule_work(&card->deferred_resume_work))
+		dev_err(socdev->dev, "resume work item may be lost\n");
 
 	return 0;
 }
@@ -790,23 +781,83 @@ static int soc_resume(struct platform_device *pdev)
 #define soc_resume	NULL
 #endif
 
-/* probes a new socdev */
-static int soc_probe(struct platform_device *pdev)
+static void snd_soc_instantiate_card(struct snd_soc_card *card)
 {
-	int ret = 0, i;
-	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
-	struct snd_soc_machine *machine = socdev->machine;
-	struct snd_soc_platform *platform = socdev->platform;
-	struct snd_soc_codec_device *codec_dev = socdev->codec_dev;
+	struct platform_device *pdev = container_of(card->dev,
+						    struct platform_device,
+						    dev);
+	struct snd_soc_codec_device *codec_dev = card->socdev->codec_dev;
+	struct snd_soc_platform *platform;
+	struct snd_soc_dai *dai;
+	int i, found, ret, ac97;
+
+	if (card->instantiated)
+		return;
+
+	found = 0;
+	list_for_each_entry(platform, &platform_list, list)
+		if (card->platform == platform) {
+			found = 1;
+			break;
+		}
+	if (!found) {
+		dev_dbg(card->dev, "Platform %s not registered\n",
+			card->platform->name);
+		return;
+	}
+
+	ac97 = 0;
+	for (i = 0; i < card->num_links; i++) {
+		found = 0;
+		list_for_each_entry(dai, &dai_list, list)
+			if (card->dai_link[i].cpu_dai == dai) {
+				found = 1;
+				break;
+			}
+		if (!found) {
+			dev_dbg(card->dev, "DAI %s not registered\n",
+				card->dai_link[i].cpu_dai->name);
+			return;
+		}
 
-	if (machine->probe) {
-		ret = machine->probe(pdev);
+		if (card->dai_link[i].cpu_dai->ac97_control)
+			ac97 = 1;
+	}
+
+	/* If we have AC97 in the system then don't wait for the
+	 * codec.  This will need revisiting if we have to handle
+	 * systems with mixed AC97 and non-AC97 parts.  Only check for
+	 * DAIs currently; we can't do this per link since some AC97
+	 * codecs have non-AC97 DAIs.
+	 */
+	if (!ac97)
+		for (i = 0; i < card->num_links; i++) {
+			found = 0;
+			list_for_each_entry(dai, &dai_list, list)
+				if (card->dai_link[i].codec_dai == dai) {
+					found = 1;
+					break;
+				}
+			if (!found) {
+				dev_dbg(card->dev, "DAI %s not registered\n",
+					card->dai_link[i].codec_dai->name);
+				return;
+			}
+		}
+
+	/* Note that we do not current check for codec components */
+
+	dev_dbg(card->dev, "All components present, instantiating\n");
+
+	/* Found everything, bring it up */
+	if (card->probe) {
+		ret = card->probe(pdev);
 		if (ret < 0)
-			return ret;
+			return;
 	}
 
-	for (i = 0; i < machine->num_links; i++) {
-		struct snd_soc_dai *cpu_dai = machine->dai_link[i].cpu_dai;
+	for (i = 0; i < card->num_links; i++) {
+		struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai;
 		if (cpu_dai->probe) {
 			ret = cpu_dai->probe(pdev, cpu_dai);
 			if (ret < 0)
@@ -827,13 +878,15 @@ static int soc_probe(struct platform_device *pdev)
 	}
 
 	/* DAPM stream work */
-	INIT_DELAYED_WORK(&socdev->delayed_work, close_delayed_work);
+	INIT_DELAYED_WORK(&card->delayed_work, close_delayed_work);
 #ifdef CONFIG_PM
 	/* deferred resume work */
-	INIT_WORK(&socdev->deferred_resume_work, soc_resume_deferred);
+	INIT_WORK(&card->deferred_resume_work, soc_resume_deferred);
 #endif
 
-	return 0;
+	card->instantiated = 1;
+
+	return;
 
 platform_err:
 	if (codec_dev->remove)
@@ -841,15 +894,45 @@ platform_err:
 
 cpu_dai_err:
 	for (i--; i >= 0; i--) {
-		struct snd_soc_dai *cpu_dai = machine->dai_link[i].cpu_dai;
+		struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai;
 		if (cpu_dai->remove)
 			cpu_dai->remove(pdev, cpu_dai);
 	}
 
-	if (machine->remove)
-		machine->remove(pdev);
+	if (card->remove)
+		card->remove(pdev);
+}
 
-	return ret;
+/*
+ * Attempt to initialise any uninitalised cards.  Must be called with
+ * client_mutex.
+ */
+static void snd_soc_instantiate_cards(void)
+{
+	struct snd_soc_card *card;
+	list_for_each_entry(card, &card_list, list)
+		snd_soc_instantiate_card(card);
+}
+
+/* probes a new socdev */
+static int soc_probe(struct platform_device *pdev)
+{
+	int ret = 0;
+	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+	struct snd_soc_card *card = socdev->card;
+
+	/* Bodge while we push things out of socdev */
+	card->socdev = socdev;
+
+	/* Bodge while we unpick instantiation */
+	card->dev = &pdev->dev;
+	ret = snd_soc_register_card(card);
+	if (ret != 0) {
+		dev_err(&pdev->dev, "Failed to register card\n");
+		return ret;
+	}
+
+	return 0;
 }
 
 /* removes a socdev */
@@ -857,11 +940,11 @@ static int soc_remove(struct platform_device *pdev)
 {
 	int i;
 	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
-	struct snd_soc_machine *machine = socdev->machine;
-	struct snd_soc_platform *platform = socdev->platform;
+	struct snd_soc_card *card = socdev->card;
+	struct snd_soc_platform *platform = card->platform;
 	struct snd_soc_codec_device *codec_dev = socdev->codec_dev;
 
-	run_delayed_work(&socdev->delayed_work);
+	run_delayed_work(&card->delayed_work);
 
 	if (platform->remove)
 		platform->remove(pdev);
@@ -869,14 +952,16 @@ static int soc_remove(struct platform_device *pdev)
 	if (codec_dev->remove)
 		codec_dev->remove(pdev);
 
-	for (i = 0; i < machine->num_links; i++) {
-		struct snd_soc_dai *cpu_dai = machine->dai_link[i].cpu_dai;
+	for (i = 0; i < card->num_links; i++) {
+		struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai;
 		if (cpu_dai->remove)
 			cpu_dai->remove(pdev, cpu_dai);
 	}
 
-	if (machine->remove)
-		machine->remove(pdev);
+	if (card->remove)
+		card->remove(pdev);
+
+	snd_soc_unregister_card(card);
 
 	return 0;
 }
@@ -898,6 +983,8 @@ static int soc_new_pcm(struct snd_soc_device *socdev,
 	struct snd_soc_dai_link *dai_link, int num)
 {
 	struct snd_soc_codec *codec = socdev->codec;
+	struct snd_soc_card *card = socdev->card;
+	struct snd_soc_platform *platform = card->platform;
 	struct snd_soc_dai *codec_dai = dai_link->codec_dai;
 	struct snd_soc_dai *cpu_dai = dai_link->cpu_dai;
 	struct snd_soc_pcm_runtime *rtd;
@@ -914,8 +1001,8 @@ static int soc_new_pcm(struct snd_soc_device *socdev,
 	codec_dai->codec = socdev->codec;
 
 	/* check client and interface hw capabilities */
-	sprintf(new_name, "%s %s-%s-%d", dai_link->stream_name, codec_dai->name,
-		get_dai_name(cpu_dai->type), num);
+	sprintf(new_name, "%s %s-%d", dai_link->stream_name, codec_dai->name,
+		num);
 
 	if (codec_dai->playback.channels_min)
 		playback = 1;
@@ -933,13 +1020,13 @@ static int soc_new_pcm(struct snd_soc_device *socdev,
 
 	dai_link->pcm = pcm;
 	pcm->private_data = rtd;
-	soc_pcm_ops.mmap = socdev->platform->pcm_ops->mmap;
-	soc_pcm_ops.pointer = socdev->platform->pcm_ops->pointer;
-	soc_pcm_ops.ioctl = socdev->platform->pcm_ops->ioctl;
-	soc_pcm_ops.copy = socdev->platform->pcm_ops->copy;
-	soc_pcm_ops.silence = socdev->platform->pcm_ops->silence;
-	soc_pcm_ops.ack = socdev->platform->pcm_ops->ack;
-	soc_pcm_ops.page = socdev->platform->pcm_ops->page;
+	soc_pcm_ops.mmap = platform->pcm_ops->mmap;
+	soc_pcm_ops.pointer = platform->pcm_ops->pointer;
+	soc_pcm_ops.ioctl = platform->pcm_ops->ioctl;
+	soc_pcm_ops.copy = platform->pcm_ops->copy;
+	soc_pcm_ops.silence = platform->pcm_ops->silence;
+	soc_pcm_ops.ack = platform->pcm_ops->ack;
+	soc_pcm_ops.page = platform->pcm_ops->page;
 
 	if (playback)
 		snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &soc_pcm_ops);
@@ -947,24 +1034,22 @@ static int soc_new_pcm(struct snd_soc_device *socdev,
 	if (capture)
 		snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &soc_pcm_ops);
 
-	ret = socdev->platform->pcm_new(codec->card, codec_dai, pcm);
+	ret = platform->pcm_new(codec->card, codec_dai, pcm);
 	if (ret < 0) {
 		printk(KERN_ERR "asoc: platform pcm constructor failed\n");
 		kfree(rtd);
 		return ret;
 	}
 
-	pcm->private_free = socdev->platform->pcm_free;
+	pcm->private_free = platform->pcm_free;
 	printk(KERN_INFO "asoc: %s <-> %s mapping ok\n", codec_dai->name,
 		cpu_dai->name);
 	return ret;
 }
 
 /* codec register dump */
-static ssize_t codec_reg_show(struct device *dev,
-	struct device_attribute *attr, char *buf)
+static ssize_t soc_codec_reg_show(struct snd_soc_device *devdata, char *buf)
 {
-	struct snd_soc_device *devdata = dev_get_drvdata(dev);
 	struct snd_soc_codec *codec = devdata->codec;
 	int i, step = 1, count = 0;
 
@@ -1001,8 +1086,110 @@ static ssize_t codec_reg_show(struct device *dev,
 
 	return count;
 }
+static ssize_t codec_reg_show(struct device *dev,
+	struct device_attribute *attr, char *buf)
+{
+	struct snd_soc_device *devdata = dev_get_drvdata(dev);
+	return soc_codec_reg_show(devdata, buf);
+}
+
 static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL);
 
+#ifdef CONFIG_DEBUG_FS
+static int codec_reg_open_file(struct inode *inode, struct file *file)
+{
+	file->private_data = inode->i_private;
+	return 0;
+}
+
+static ssize_t codec_reg_read_file(struct file *file, char __user *user_buf,
+			       size_t count, loff_t *ppos)
+{
+	ssize_t ret;
+	struct snd_soc_codec *codec = file->private_data;
+	struct device *card_dev = codec->card->dev;
+	struct snd_soc_device *devdata = card_dev->driver_data;
+	char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
+	if (!buf)
+		return -ENOMEM;
+	ret = soc_codec_reg_show(devdata, buf);
+	if (ret >= 0)
+		ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
+	kfree(buf);
+	return ret;
+}
+
+static ssize_t codec_reg_write_file(struct file *file,
+		const char __user *user_buf, size_t count, loff_t *ppos)
+{
+	char buf[32];
+	int buf_size;
+	char *start = buf;
+	unsigned long reg, value;
+	int step = 1;
+	struct snd_soc_codec *codec = file->private_data;
+
+	buf_size = min(count, (sizeof(buf)-1));
+	if (copy_from_user(buf, user_buf, buf_size))
+		return -EFAULT;
+	buf[buf_size] = 0;
+
+	if (codec->reg_cache_step)
+		step = codec->reg_cache_step;
+
+	while (*start == ' ')
+		start++;
+	reg = simple_strtoul(start, &start, 16);
+	if ((reg >= codec->reg_cache_size) || (reg % step))
+		return -EINVAL;
+	while (*start == ' ')
+		start++;
+	if (strict_strtoul(start, 16, &value))
+		return -EINVAL;
+	codec->write(codec, reg, value);
+	return buf_size;
+}
+
+static const struct file_operations codec_reg_fops = {
+	.open = codec_reg_open_file,
+	.read = codec_reg_read_file,
+	.write = codec_reg_write_file,
+};
+
+static void soc_init_codec_debugfs(struct snd_soc_codec *codec)
+{
+	codec->debugfs_reg = debugfs_create_file("codec_reg", 0644,
+						 debugfs_root, codec,
+						 &codec_reg_fops);
+	if (!codec->debugfs_reg)
+		printk(KERN_WARNING
+		       "ASoC: Failed to create codec register debugfs file\n");
+
+	codec->debugfs_pop_time = debugfs_create_u32("dapm_pop_time", 0744,
+						     debugfs_root,
+						     &codec->pop_time);
+	if (!codec->debugfs_pop_time)
+		printk(KERN_WARNING
+		       "Failed to create pop time debugfs file\n");
+}
+
+static void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
+{
+	debugfs_remove(codec->debugfs_pop_time);
+	debugfs_remove(codec->debugfs_reg);
+}
+
+#else
+
+static inline void soc_init_codec_debugfs(struct snd_soc_codec *codec)
+{
+}
+
+static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
+{
+}
+#endif
+
 /**
  * snd_soc_new_ac97_codec - initailise AC97 device
  * @codec: audio codec
@@ -1121,7 +1308,7 @@ EXPORT_SYMBOL_GPL(snd_soc_test_bits);
 int snd_soc_new_pcms(struct snd_soc_device *socdev, int idx, const char *xid)
 {
 	struct snd_soc_codec *codec = socdev->codec;
-	struct snd_soc_machine *machine = socdev->machine;
+	struct snd_soc_card *card = socdev->card;
 	int ret = 0, i;
 
 	mutex_lock(&codec->mutex);
@@ -1140,11 +1327,11 @@ int snd_soc_new_pcms(struct snd_soc_device *socdev, int idx, const char *xid)
 	strncpy(codec->card->driver, codec->name, sizeof(codec->card->driver));
 
 	/* create the pcms */
-	for (i = 0; i < machine->num_links; i++) {
-		ret = soc_new_pcm(socdev, &machine->dai_link[i], i);
+	for (i = 0; i < card->num_links; i++) {
+		ret = soc_new_pcm(socdev, &card->dai_link[i], i);
 		if (ret < 0) {
 			printk(KERN_ERR "asoc: can't create pcm %s\n",
-				machine->dai_link[i].stream_name);
+				card->dai_link[i].stream_name);
 			mutex_unlock(&codec->mutex);
 			return ret;
 		}
@@ -1156,7 +1343,7 @@ int snd_soc_new_pcms(struct snd_soc_device *socdev, int idx, const char *xid)
 EXPORT_SYMBOL_GPL(snd_soc_new_pcms);
 
 /**
- * snd_soc_register_card - register sound card
+ * snd_soc_init_card - register sound card
  * @socdev: the SoC audio device
  *
  * Register a SoC sound card. Also registers an AC97 device if the
@@ -1164,29 +1351,28 @@ EXPORT_SYMBOL_GPL(snd_soc_new_pcms);
  *
  * Returns 0 for success, else error.
  */
-int snd_soc_register_card(struct snd_soc_device *socdev)
+int snd_soc_init_card(struct snd_soc_device *socdev)
 {
 	struct snd_soc_codec *codec = socdev->codec;
-	struct snd_soc_machine *machine = socdev->machine;
+	struct snd_soc_card *card = socdev->card;
 	int ret = 0, i, ac97 = 0, err = 0;
 
-	for (i = 0; i < machine->num_links; i++) {
-		if (socdev->machine->dai_link[i].init) {
-			err = socdev->machine->dai_link[i].init(codec);
+	for (i = 0; i < card->num_links; i++) {
+		if (card->dai_link[i].init) {
+			err = card->dai_link[i].init(codec);
 			if (err < 0) {
 				printk(KERN_ERR "asoc: failed to init %s\n",
-					socdev->machine->dai_link[i].stream_name);
+					card->dai_link[i].stream_name);
 				continue;
 			}
 		}
-		if (socdev->machine->dai_link[i].codec_dai->type ==
-			SND_SOC_DAI_AC97_BUS)
+		if (card->dai_link[i].codec_dai->ac97_control)
 			ac97 = 1;
 	}
 	snprintf(codec->card->shortname, sizeof(codec->card->shortname),
-		 "%s", machine->name);
+		 "%s",  card->name);
 	snprintf(codec->card->longname, sizeof(codec->card->longname),
-		 "%s (%s)", machine->name, codec->name);
+		 "%s (%s)", card->name, codec->name);
 
 	ret = snd_card_register(codec->card);
 	if (ret < 0) {
@@ -1216,12 +1402,13 @@ int snd_soc_register_card(struct snd_soc_device *socdev)
 	if (err < 0)
 		printk(KERN_WARNING "asoc: failed to add codec sysfs files\n");
 
+	soc_init_codec_debugfs(socdev->codec);
 	mutex_unlock(&codec->mutex);
 
 out:
 	return ret;
 }
-EXPORT_SYMBOL_GPL(snd_soc_register_card);
+EXPORT_SYMBOL_GPL(snd_soc_init_card);
 
 /**
  * snd_soc_free_pcms - free sound card and pcms
@@ -1239,10 +1426,11 @@ void snd_soc_free_pcms(struct snd_soc_device *socdev)
 #endif
 
 	mutex_lock(&codec->mutex);
+	soc_cleanup_codec_debugfs(socdev->codec);
 #ifdef CONFIG_SND_SOC_AC97_BUS
 	for (i = 0; i < codec->num_dai; i++) {
 		codec_dai = &codec->dai[i];
-		if (codec_dai->type == SND_SOC_DAI_AC97_BUS && codec->ac97) {
+		if (codec_dai->ac97_control && codec->ac97) {
 			soc_ac97_dev_unregister(codec);
 			goto free_card;
 		}
@@ -1756,8 +1944,8 @@ EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8);
 int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
 	unsigned int freq, int dir)
 {
-	if (dai->dai_ops.set_sysclk)
-		return dai->dai_ops.set_sysclk(dai, clk_id, freq, dir);
+	if (dai->ops.set_sysclk)
+		return dai->ops.set_sysclk(dai, clk_id, freq, dir);
 	else
 		return -EINVAL;
 }
@@ -1776,8 +1964,8 @@ EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk);
 int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai,
 	int div_id, int div)
 {
-	if (dai->dai_ops.set_clkdiv)
-		return dai->dai_ops.set_clkdiv(dai, div_id, div);
+	if (dai->ops.set_clkdiv)
+		return dai->ops.set_clkdiv(dai, div_id, div);
 	else
 		return -EINVAL;
 }
@@ -1795,8 +1983,8 @@ EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv);
 int snd_soc_dai_set_pll(struct snd_soc_dai *dai,
 	int pll_id, unsigned int freq_in, unsigned int freq_out)
 {
-	if (dai->dai_ops.set_pll)
-		return dai->dai_ops.set_pll(dai, pll_id, freq_in, freq_out);
+	if (dai->ops.set_pll)
+		return dai->ops.set_pll(dai, pll_id, freq_in, freq_out);
 	else
 		return -EINVAL;
 }
@@ -1805,15 +1993,14 @@ EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll);
 /**
  * snd_soc_dai_set_fmt - configure DAI hardware audio format.
  * @dai: DAI
- * @clk_id: DAI specific clock ID
  * @fmt: SND_SOC_DAIFMT_ format value.
  *
  * Configures the DAI hardware format and clocking.
  */
 int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
 {
-	if (dai->dai_ops.set_fmt)
-		return dai->dai_ops.set_fmt(dai, fmt);
+	if (dai->ops.set_fmt)
+		return dai->ops.set_fmt(dai, fmt);
 	else
 		return -EINVAL;
 }
@@ -1831,8 +2018,8 @@ EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt);
 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
 	unsigned int mask, int slots)
 {
-	if (dai->dai_ops.set_sysclk)
-		return dai->dai_ops.set_tdm_slot(dai, mask, slots);
+	if (dai->ops.set_sysclk)
+		return dai->ops.set_tdm_slot(dai, mask, slots);
 	else
 		return -EINVAL;
 }
@@ -1847,8 +2034,8 @@ EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot);
  */
 int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate)
 {
-	if (dai->dai_ops.set_sysclk)
-		return dai->dai_ops.set_tristate(dai, tristate);
+	if (dai->ops.set_sysclk)
+		return dai->ops.set_tristate(dai, tristate);
 	else
 		return -EINVAL;
 }
@@ -1863,21 +2050,242 @@ EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate);
  */
 int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute)
 {
-	if (dai->dai_ops.digital_mute)
-		return dai->dai_ops.digital_mute(dai, mute);
+	if (dai->ops.digital_mute)
+		return dai->ops.digital_mute(dai, mute);
 	else
 		return -EINVAL;
 }
 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute);
 
-static int __devinit snd_soc_init(void)
+/**
+ * snd_soc_register_card - Register a card with the ASoC core
+ *
+ * @param card Card to register
+ *
+ * Note that currently this is an internal only function: it will be
+ * exposed to machine drivers after further backporting of ASoC v2
+ * registration APIs.
+ */
+static int snd_soc_register_card(struct snd_soc_card *card)
+{
+	if (!card->name || !card->dev)
+		return -EINVAL;
+
+	INIT_LIST_HEAD(&card->list);
+	card->instantiated = 0;
+
+	mutex_lock(&client_mutex);
+	list_add(&card->list, &card_list);
+	snd_soc_instantiate_cards();
+	mutex_unlock(&client_mutex);
+
+	dev_dbg(card->dev, "Registered card '%s'\n", card->name);
+
+	return 0;
+}
+
+/**
+ * snd_soc_unregister_card - Unregister a card with the ASoC core
+ *
+ * @param card Card to unregister
+ *
+ * Note that currently this is an internal only function: it will be
+ * exposed to machine drivers after further backporting of ASoC v2
+ * registration APIs.
+ */
+static int snd_soc_unregister_card(struct snd_soc_card *card)
+{
+	mutex_lock(&client_mutex);
+	list_del(&card->list);
+	mutex_unlock(&client_mutex);
+
+	dev_dbg(card->dev, "Unregistered card '%s'\n", card->name);
+
+	return 0;
+}
+
+/**
+ * snd_soc_register_dai - Register a DAI with the ASoC core
+ *
+ * @param dai DAI to register
+ */
+int snd_soc_register_dai(struct snd_soc_dai *dai)
+{
+	if (!dai->name)
+		return -EINVAL;
+
+	/* The device should become mandatory over time */
+	if (!dai->dev)
+		printk(KERN_WARNING "No device for DAI %s\n", dai->name);
+
+	INIT_LIST_HEAD(&dai->list);
+
+	mutex_lock(&client_mutex);
+	list_add(&dai->list, &dai_list);
+	snd_soc_instantiate_cards();
+	mutex_unlock(&client_mutex);
+
+	pr_debug("Registered DAI '%s'\n", dai->name);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_register_dai);
+
+/**
+ * snd_soc_unregister_dai - Unregister a DAI from the ASoC core
+ *
+ * @param dai DAI to unregister
+ */
+void snd_soc_unregister_dai(struct snd_soc_dai *dai)
+{
+	mutex_lock(&client_mutex);
+	list_del(&dai->list);
+	mutex_unlock(&client_mutex);
+
+	pr_debug("Unregistered DAI '%s'\n", dai->name);
+}
+EXPORT_SYMBOL_GPL(snd_soc_unregister_dai);
+
+/**
+ * snd_soc_register_dais - Register multiple DAIs with the ASoC core
+ *
+ * @param dai Array of DAIs to register
+ * @param count Number of DAIs
+ */
+int snd_soc_register_dais(struct snd_soc_dai *dai, size_t count)
+{
+	int i, ret;
+
+	for (i = 0; i < count; i++) {
+		ret = snd_soc_register_dai(&dai[i]);
+		if (ret != 0)
+			goto err;
+	}
+
+	return 0;
+
+err:
+	for (i--; i >= 0; i--)
+		snd_soc_unregister_dai(&dai[i]);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(snd_soc_register_dais);
+
+/**
+ * snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core
+ *
+ * @param dai Array of DAIs to unregister
+ * @param count Number of DAIs
+ */
+void snd_soc_unregister_dais(struct snd_soc_dai *dai, size_t count)
+{
+	int i;
+
+	for (i = 0; i < count; i++)
+		snd_soc_unregister_dai(&dai[i]);
+}
+EXPORT_SYMBOL_GPL(snd_soc_unregister_dais);
+
+/**
+ * snd_soc_register_platform - Register a platform with the ASoC core
+ *
+ * @param platform platform to register
+ */
+int snd_soc_register_platform(struct snd_soc_platform *platform)
+{
+	if (!platform->name)
+		return -EINVAL;
+
+	INIT_LIST_HEAD(&platform->list);
+
+	mutex_lock(&client_mutex);
+	list_add(&platform->list, &platform_list);
+	snd_soc_instantiate_cards();
+	mutex_unlock(&client_mutex);
+
+	pr_debug("Registered platform '%s'\n", platform->name);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_register_platform);
+
+/**
+ * snd_soc_unregister_platform - Unregister a platform from the ASoC core
+ *
+ * @param platform platform to unregister
+ */
+void snd_soc_unregister_platform(struct snd_soc_platform *platform)
 {
-	printk(KERN_INFO "ASoC version %s\n", SND_SOC_VERSION);
+	mutex_lock(&client_mutex);
+	list_del(&platform->list);
+	mutex_unlock(&client_mutex);
+
+	pr_debug("Unregistered platform '%s'\n", platform->name);
+}
+EXPORT_SYMBOL_GPL(snd_soc_unregister_platform);
+
+/**
+ * snd_soc_register_codec - Register a codec with the ASoC core
+ *
+ * @param codec codec to register
+ */
+int snd_soc_register_codec(struct snd_soc_codec *codec)
+{
+	if (!codec->name)
+		return -EINVAL;
+
+	/* The device should become mandatory over time */
+	if (!codec->dev)
+		printk(KERN_WARNING "No device for codec %s\n", codec->name);
+
+	INIT_LIST_HEAD(&codec->list);
+
+	mutex_lock(&client_mutex);
+	list_add(&codec->list, &codec_list);
+	snd_soc_instantiate_cards();
+	mutex_unlock(&client_mutex);
+
+	pr_debug("Registered codec '%s'\n", codec->name);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_register_codec);
+
+/**
+ * snd_soc_unregister_codec - Unregister a codec from the ASoC core
+ *
+ * @param codec codec to unregister
+ */
+void snd_soc_unregister_codec(struct snd_soc_codec *codec)
+{
+	mutex_lock(&client_mutex);
+	list_del(&codec->list);
+	mutex_unlock(&client_mutex);
+
+	pr_debug("Unregistered codec '%s'\n", codec->name);
+}
+EXPORT_SYMBOL_GPL(snd_soc_unregister_codec);
+
+static int __init snd_soc_init(void)
+{
+#ifdef CONFIG_DEBUG_FS
+	debugfs_root = debugfs_create_dir("asoc", NULL);
+	if (IS_ERR(debugfs_root) || !debugfs_root) {
+		printk(KERN_WARNING
+		       "ASoC: Failed to create debugfs directory\n");
+		debugfs_root = NULL;
+	}
+#endif
+
 	return platform_driver_register(&soc_driver);
 }
 
-static void snd_soc_exit(void)
+static void __exit snd_soc_exit(void)
 {
+#ifdef CONFIG_DEBUG_FS
+	debugfs_remove_recursive(debugfs_root);
+#endif
 	platform_driver_unregister(&soc_driver);
 }