X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=sound%2Fsoc%2Fsoc-core.c;h=998569d6033066fe9d5e498eece2e9992089a75f;hb=d71f4cece4bd97d05592836202fc04ff2e7817e3;hp=8592d95023ed65fc459cd97df1bc3f4dcdea73e9;hpb=dbe36c9dd571e035078207862766963c4fc80262;p=safe%2Fjmp%2Flinux-2.6

diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 8592d95..998569d 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -28,6 +28,8 @@
 #include <linux/bitops.h>
 #include <linux/debugfs.h>
 #include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <sound/ac97_codec.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
@@ -36,7 +38,6 @@
 #include <sound/initval.h>
 
 static DEFINE_MUTEX(pcm_mutex);
-static DEFINE_MUTEX(io_mutex);
 static DECLARE_WAIT_QUEUE_HEAD(soc_pm_waitq);
 
 #ifdef CONFIG_DEBUG_FS
@@ -80,6 +81,196 @@ static int run_delayed_work(struct delayed_work *dwork)
 	return ret;
 }
 
+/* codec register dump */
+static ssize_t soc_codec_reg_show(struct snd_soc_codec *codec, char *buf)
+{
+	int i, step = 1, count = 0;
+
+	if (!codec->reg_cache_size)
+		return 0;
+
+	if (codec->reg_cache_step)
+		step = codec->reg_cache_step;
+
+	count += sprintf(buf, "%s registers\n", codec->name);
+	for (i = 0; i < codec->reg_cache_size; i += step) {
+		if (codec->readable_register && !codec->readable_register(i))
+			continue;
+
+		count += sprintf(buf + count, "%2x: ", i);
+		if (count >= PAGE_SIZE - 1)
+			break;
+
+		if (codec->display_register)
+			count += codec->display_register(codec, buf + count,
+							 PAGE_SIZE - count, i);
+		else
+			count += snprintf(buf + count, PAGE_SIZE - count,
+					  "%4x", codec->read(codec, i));
+
+		if (count >= PAGE_SIZE - 1)
+			break;
+
+		count += snprintf(buf + count, PAGE_SIZE - count, "\n");
+		if (count >= PAGE_SIZE - 1)
+			break;
+	}
+
+	/* Truncate count; min() would cause a warning */
+	if (count >= PAGE_SIZE)
+		count = PAGE_SIZE - 1;
+
+	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->card->codec, buf);
+}
+
+static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL);
+
+static ssize_t pmdown_time_show(struct device *dev,
+				struct device_attribute *attr, char *buf)
+{
+	struct snd_soc_device *socdev = dev_get_drvdata(dev);
+	struct snd_soc_card *card = socdev->card;
+
+	return sprintf(buf, "%ld\n", card->pmdown_time);
+}
+
+static ssize_t pmdown_time_set(struct device *dev,
+			       struct device_attribute *attr,
+			       const char *buf, size_t count)
+{
+	struct snd_soc_device *socdev = dev_get_drvdata(dev);
+	struct snd_soc_card *card = socdev->card;
+
+	strict_strtol(buf, 10, &card->pmdown_time);
+
+	return count;
+}
+
+static DEVICE_ATTR(pmdown_time, 0644, pmdown_time_show, pmdown_time_set);
+
+#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;
+	char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
+	if (!buf)
+		return -ENOMEM;
+	ret = soc_codec_reg_show(codec, 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)
+{
+	char codec_root[128];
+
+	if (codec->dev)
+		snprintf(codec_root, sizeof(codec_root),
+			"%s.%s", codec->name, dev_name(codec->dev));
+	else
+		snprintf(codec_root, sizeof(codec_root),
+			"%s", codec->name);
+
+	codec->debugfs_codec_root = debugfs_create_dir(codec_root,
+						       debugfs_root);
+	if (!codec->debugfs_codec_root) {
+		printk(KERN_WARNING
+		       "ASoC: Failed to create codec debugfs directory\n");
+		return;
+	}
+
+	codec->debugfs_reg = debugfs_create_file("codec_reg", 0644,
+						 codec->debugfs_codec_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,
+						     codec->debugfs_codec_root,
+						     &codec->pop_time);
+	if (!codec->debugfs_pop_time)
+		printk(KERN_WARNING
+		       "Failed to create pop time debugfs file\n");
+
+	codec->debugfs_dapm = debugfs_create_dir("dapm",
+						 codec->debugfs_codec_root);
+	if (!codec->debugfs_dapm)
+		printk(KERN_WARNING
+		       "Failed to create DAPM debugfs directory\n");
+
+	snd_soc_dapm_debugfs_init(codec);
+}
+
+static void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
+{
+	debugfs_remove_recursive(codec->debugfs_codec_root);
+}
+
+#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
+
 #ifdef CONFIG_SND_SOC_AC97_BUS
 /* unregister ac97 codec */
 static int soc_ac97_dev_unregister(struct snd_soc_codec *codec)
@@ -98,7 +289,7 @@ static int soc_ac97_dev_register(struct snd_soc_codec *codec)
 	int err;
 
 	codec->ac97->dev.bus = &ac97_bus_type;
-	codec->ac97->dev.parent = NULL;
+	codec->ac97->dev.parent = codec->card->dev;
 	codec->ac97->dev.release = soc_ac97_device_release;
 
 	dev_set_name(&codec->ac97->dev, "%d-%d:%s",
@@ -113,6 +304,35 @@ static int soc_ac97_dev_register(struct snd_soc_codec *codec)
 }
 #endif
 
+static int soc_pcm_apply_symmetry(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_dai *cpu_dai = machine->cpu_dai;
+	struct snd_soc_dai *codec_dai = machine->codec_dai;
+	int ret;
+
+	if (codec_dai->symmetric_rates || cpu_dai->symmetric_rates ||
+	    machine->symmetric_rates) {
+		dev_dbg(card->dev, "Symmetry forces %dHz rate\n",
+			machine->rate);
+
+		ret = snd_pcm_hw_constraint_minmax(substream->runtime,
+						   SNDRV_PCM_HW_PARAM_RATE,
+						   machine->rate,
+						   machine->rate);
+		if (ret < 0) {
+			dev_err(card->dev,
+				"Unable to apply rate symmetry constraint: %d\n", ret);
+			return ret;
+		}
+	}
+
+	return 0;
+}
+
 /*
  * 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
@@ -133,8 +353,8 @@ static int soc_pcm_open(struct snd_pcm_substream *substream)
 	mutex_lock(&pcm_mutex);
 
 	/* startup the audio subsystem */
-	if (cpu_dai->ops.startup) {
-		ret = cpu_dai->ops.startup(substream, cpu_dai);
+	if (cpu_dai->ops->startup) {
+		ret = cpu_dai->ops->startup(substream, cpu_dai);
 		if (ret < 0) {
 			printk(KERN_ERR "asoc: can't open interface %s\n",
 				cpu_dai->name);
@@ -150,8 +370,8 @@ static int soc_pcm_open(struct snd_pcm_substream *substream)
 		}
 	}
 
-	if (codec_dai->ops.startup) {
-		ret = codec_dai->ops.startup(substream, codec_dai);
+	if (codec_dai->ops->startup) {
+		ret = codec_dai->ops->startup(substream, codec_dai);
 		if (ret < 0) {
 			printk(KERN_ERR "asoc: can't open codec %s\n",
 				codec_dai->name);
@@ -185,6 +405,12 @@ static int soc_pcm_open(struct snd_pcm_substream *substream)
 			codec_dai->playback.formats & cpu_dai->playback.formats;
 		runtime->hw.rates =
 			codec_dai->playback.rates & cpu_dai->playback.rates;
+		if (codec_dai->playback.rates
+			   & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))
+			runtime->hw.rates |= cpu_dai->playback.rates;
+		if (cpu_dai->playback.rates
+			   & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))
+			runtime->hw.rates |= codec_dai->playback.rates;
 	} else {
 		runtime->hw.rate_min =
 			max(codec_dai->capture.rate_min,
@@ -202,23 +428,36 @@ static int soc_pcm_open(struct snd_pcm_substream *substream)
 			codec_dai->capture.formats & cpu_dai->capture.formats;
 		runtime->hw.rates =
 			codec_dai->capture.rates & cpu_dai->capture.rates;
+		if (codec_dai->capture.rates
+			   & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))
+			runtime->hw.rates |= cpu_dai->capture.rates;
+		if (cpu_dai->capture.rates
+			   & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))
+			runtime->hw.rates |= codec_dai->capture.rates;
 	}
 
 	snd_pcm_limit_hw_rates(runtime);
 	if (!runtime->hw.rates) {
 		printk(KERN_ERR "asoc: %s <-> %s No matching rates\n",
 			codec_dai->name, cpu_dai->name);
-		goto machine_err;
+		goto config_err;
 	}
 	if (!runtime->hw.formats) {
 		printk(KERN_ERR "asoc: %s <-> %s No matching formats\n",
 			codec_dai->name, cpu_dai->name);
-		goto machine_err;
+		goto config_err;
 	}
 	if (!runtime->hw.channels_min || !runtime->hw.channels_max) {
 		printk(KERN_ERR "asoc: %s <-> %s No matching channels\n",
 			codec_dai->name, cpu_dai->name);
-		goto machine_err;
+		goto config_err;
+	}
+
+	/* Symmetry only applies if we've already got an active stream. */
+	if (cpu_dai->active || codec_dai->active) {
+		ret = soc_pcm_apply_symmetry(substream);
+		if (ret != 0)
+			goto config_err;
 	}
 
 	pr_debug("asoc: %s <-> %s info:\n", codec_dai->name, cpu_dai->name);
@@ -228,27 +467,34 @@ static int soc_pcm_open(struct snd_pcm_substream *substream)
 	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;
-	else
-		cpu_dai->capture.active = codec_dai->capture.active = 1;
-	cpu_dai->active = codec_dai->active = 1;
-	cpu_dai->runtime = runtime;
-	socdev->codec->active++;
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+		cpu_dai->playback.active++;
+		codec_dai->playback.active++;
+	} else {
+		cpu_dai->capture.active++;
+		codec_dai->capture.active++;
+	}
+	cpu_dai->active++;
+	codec_dai->active++;
+	card->codec->active++;
 	mutex_unlock(&pcm_mutex);
 	return 0;
 
-machine_err:
+config_err:
 	if (machine->ops && machine->ops->shutdown)
 		machine->ops->shutdown(substream);
 
+machine_err:
+	if (codec_dai->ops->shutdown)
+		codec_dai->ops->shutdown(substream, codec_dai);
+
 codec_dai_err:
 	if (platform->pcm_ops->close)
 		platform->pcm_ops->close(substream);
 
 platform_err:
-	if (cpu_dai->ops.shutdown)
-		cpu_dai->ops.shutdown(substream, cpu_dai);
+	if (cpu_dai->ops->shutdown)
+		cpu_dai->ops->shutdown(substream, cpu_dai);
 out:
 	mutex_unlock(&pcm_mutex);
 	return ret;
@@ -263,8 +509,7 @@ static void close_delayed_work(struct work_struct *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_codec *codec = card->codec;
 	struct snd_soc_dai *codec_dai;
 	int i;
 
@@ -279,27 +524,10 @@ static void close_delayed_work(struct work_struct *work)
 
 		/* are we waiting on this codec DAI stream */
 		if (codec_dai->pop_wait == 1) {
-
-			/* Reduce power if no longer active */
-			if (codec->active == 0) {
-				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);
-			}
-
 			codec_dai->pop_wait = 0;
 			snd_soc_dapm_stream_event(codec,
 				codec_dai->playback.stream_name,
 				SND_SOC_DAPM_STREAM_STOP);
-
-			/* Fall into standby if no longer active */
-			if (codec->active == 0) {
-				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);
-			}
 		}
 	}
 	mutex_unlock(&pcm_mutex);
@@ -319,19 +547,20 @@ static int soc_codec_close(struct snd_pcm_substream *substream)
 	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;
+	struct snd_soc_codec *codec = card->codec;
 
 	mutex_lock(&pcm_mutex);
 
-	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
-		cpu_dai->playback.active = codec_dai->playback.active = 0;
-	else
-		cpu_dai->capture.active = codec_dai->capture.active = 0;
-
-	if (codec_dai->playback.active == 0 &&
-		codec_dai->capture.active == 0) {
-		cpu_dai->active = codec_dai->active = 0;
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+		cpu_dai->playback.active--;
+		codec_dai->playback.active--;
+	} else {
+		cpu_dai->capture.active--;
+		codec_dai->capture.active--;
 	}
+
+	cpu_dai->active--;
+	codec_dai->active--;
 	codec->active--;
 
 	/* Muting the DAC suppresses artifacts caused during digital
@@ -340,33 +569,28 @@ static int soc_codec_close(struct snd_pcm_substream *substream)
 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 		snd_soc_dai_digital_mute(codec_dai, 1);
 
-	if (cpu_dai->ops.shutdown)
-		cpu_dai->ops.shutdown(substream, cpu_dai);
+	if (cpu_dai->ops->shutdown)
+		cpu_dai->ops->shutdown(substream, cpu_dai);
 
-	if (codec_dai->ops.shutdown)
-		codec_dai->ops.shutdown(substream, codec_dai);
+	if (codec_dai->ops->shutdown)
+		codec_dai->ops->shutdown(substream, codec_dai);
 
 	if (machine->ops && machine->ops->shutdown)
 		machine->ops->shutdown(substream);
 
 	if (platform->pcm_ops->close)
 		platform->pcm_ops->close(substream);
-	cpu_dai->runtime = NULL;
 
 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
 		/* start delayed pop wq here for playback streams */
 		codec_dai->pop_wait = 1;
 		schedule_delayed_work(&card->delayed_work,
-			msecs_to_jiffies(pmdown_time));
+			msecs_to_jiffies(card->pmdown_time));
 	} else {
 		/* capture streams can be powered down now */
 		snd_soc_dapm_stream_event(codec,
 			codec_dai->capture.stream_name,
 			SND_SOC_DAPM_STREAM_STOP);
-
-		if (codec->active == 0 && codec_dai->pop_wait == 0)
-			snd_soc_dapm_set_bias_level(socdev,
-						SND_SOC_BIAS_STANDBY);
 	}
 
 	mutex_unlock(&pcm_mutex);
@@ -387,7 +611,7 @@ static int soc_pcm_prepare(struct snd_pcm_substream *substream)
 	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;
+	struct snd_soc_codec *codec = card->codec;
 	int ret = 0;
 
 	mutex_lock(&pcm_mutex);
@@ -408,16 +632,16 @@ static int soc_pcm_prepare(struct snd_pcm_substream *substream)
 		}
 	}
 
-	if (codec_dai->ops.prepare) {
-		ret = codec_dai->ops.prepare(substream, codec_dai);
+	if (codec_dai->ops->prepare) {
+		ret = codec_dai->ops->prepare(substream, codec_dai);
 		if (ret < 0) {
 			printk(KERN_ERR "asoc: codec DAI prepare error\n");
 			goto out;
 		}
 	}
 
-	if (cpu_dai->ops.prepare) {
-		ret = cpu_dai->ops.prepare(substream, cpu_dai);
+	if (cpu_dai->ops->prepare) {
+		ret = cpu_dai->ops->prepare(substream, cpu_dai);
 		if (ret < 0) {
 			printk(KERN_ERR "asoc: cpu DAI prepare error\n");
 			goto out;
@@ -431,36 +655,16 @@ static int soc_pcm_prepare(struct snd_pcm_substream *substream)
 		cancel_delayed_work(&card->delayed_work);
 	}
 
-	/* 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,
-					codec_dai->playback.stream_name,
-					SND_SOC_DAPM_STREAM_START);
-		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);
-
-	} 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,
-					codec_dai->capture.stream_name,
-					SND_SOC_DAPM_STREAM_START);
+	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,
+					  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:
 	mutex_unlock(&pcm_mutex);
@@ -494,8 +698,8 @@ 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, codec_dai);
+	if (codec_dai->ops->hw_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);
@@ -503,8 +707,8 @@ 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, cpu_dai);
+	if (cpu_dai->ops->hw_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);
@@ -521,17 +725,19 @@ static int soc_pcm_hw_params(struct snd_pcm_substream *substream,
 		}
 	}
 
+	machine->rate = params_rate(params);
+
 out:
 	mutex_unlock(&pcm_mutex);
 	return ret;
 
 platform_err:
-	if (cpu_dai->ops.hw_free)
-		cpu_dai->ops.hw_free(substream, cpu_dai);
+	if (cpu_dai->ops->hw_free)
+		cpu_dai->ops->hw_free(substream, cpu_dai);
 
 interface_err:
-	if (codec_dai->ops.hw_free)
-		codec_dai->ops.hw_free(substream, codec_dai);
+	if (codec_dai->ops->hw_free)
+		codec_dai->ops->hw_free(substream, codec_dai);
 
 codec_err:
 	if (machine->ops && machine->ops->hw_free)
@@ -553,7 +759,7 @@ static int soc_pcm_hw_free(struct snd_pcm_substream *substream)
 	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;
+	struct snd_soc_codec *codec = card->codec;
 
 	mutex_lock(&pcm_mutex);
 
@@ -570,11 +776,11 @@ static int soc_pcm_hw_free(struct snd_pcm_substream *substream)
 		platform->pcm_ops->hw_free(substream);
 
 	/* now free hw params for the DAI's  */
-	if (codec_dai->ops.hw_free)
-		codec_dai->ops.hw_free(substream, codec_dai);
+	if (codec_dai->ops->hw_free)
+		codec_dai->ops->hw_free(substream, codec_dai);
 
-	if (cpu_dai->ops.hw_free)
-		cpu_dai->ops.hw_free(substream, cpu_dai);
+	if (cpu_dai->ops->hw_free)
+		cpu_dai->ops->hw_free(substream, cpu_dai);
 
 	mutex_unlock(&pcm_mutex);
 	return 0;
@@ -591,8 +797,8 @@ static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
 	struct snd_soc_dai *codec_dai = machine->codec_dai;
 	int ret;
 
-	if (codec_dai->ops.trigger) {
-		ret = codec_dai->ops.trigger(substream, cmd, codec_dai);
+	if (codec_dai->ops->trigger) {
+		ret = codec_dai->ops->trigger(substream, cmd, codec_dai);
 		if (ret < 0)
 			return ret;
 	}
@@ -603,14 +809,49 @@ static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
 			return ret;
 	}
 
-	if (cpu_dai->ops.trigger) {
-		ret = cpu_dai->ops.trigger(substream, cmd, cpu_dai);
+	if (cpu_dai->ops->trigger) {
+		ret = cpu_dai->ops->trigger(substream, cmd, cpu_dai);
 		if (ret < 0)
 			return ret;
 	}
 	return 0;
 }
 
+/*
+ * soc level wrapper for pointer callback
+ * If cpu_dai, codec_dai, platform driver has the delay callback, than
+ * the runtime->delay will be updated accordingly.
+ */
+static snd_pcm_uframes_t soc_pcm_pointer(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_platform *platform = card->platform;
+	struct snd_soc_dai_link *machine = rtd->dai;
+	struct snd_soc_dai *cpu_dai = machine->cpu_dai;
+	struct snd_soc_dai *codec_dai = machine->codec_dai;
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	snd_pcm_uframes_t offset = 0;
+	snd_pcm_sframes_t delay = 0;
+
+	if (platform->pcm_ops->pointer)
+		offset = platform->pcm_ops->pointer(substream);
+
+	if (cpu_dai->ops->delay)
+		delay += cpu_dai->ops->delay(substream, cpu_dai);
+
+	if (codec_dai->ops->delay)
+		delay += codec_dai->ops->delay(substream, codec_dai);
+
+	if (platform->delay)
+		delay += platform->delay(substream, codec_dai);
+
+	runtime->delay = delay;
+
+	return offset;
+}
+
 /* ASoC PCM operations */
 static struct snd_pcm_ops soc_pcm_ops = {
 	.open		= soc_pcm_open,
@@ -619,19 +860,27 @@ static struct snd_pcm_ops soc_pcm_ops = {
 	.hw_free	= soc_pcm_hw_free,
 	.prepare	= soc_pcm_prepare,
 	.trigger	= soc_pcm_trigger,
+	.pointer	= soc_pcm_pointer,
 };
 
 #ifdef CONFIG_PM
 /* powers down audio subsystem for suspend */
-static int soc_suspend(struct platform_device *pdev, pm_message_t state)
+static int soc_suspend(struct device *dev)
 {
+	struct platform_device *pdev = to_platform_device(dev);
 	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 	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;
+	struct snd_soc_codec *codec = card->codec;
 	int i;
 
+	/* If the initialization of this soc device failed, there is no codec
+	 * associated with it. Just bail out in this case.
+	 */
+	if (!codec)
+		return 0;
+
 	/* Due to the resume being scheduled into a workqueue we could
 	* suspend before that's finished - wait for it to complete.
 	 */
@@ -645,23 +894,35 @@ static int soc_suspend(struct platform_device *pdev, pm_message_t state)
 	/* mute any active DAC's */
 	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);
+
+		if (card->dai_link[i].ignore_suspend)
+			continue;
+
+		if (dai->ops->digital_mute && dai->playback.active)
+			dai->ops->digital_mute(dai, 1);
 	}
 
 	/* suspend all pcms */
-	for (i = 0; i < card->num_links; i++)
+	for (i = 0; i < card->num_links; i++) {
+		if (card->dai_link[i].ignore_suspend)
+			continue;
+
 		snd_pcm_suspend_all(card->dai_link[i].pcm);
+	}
 
 	if (card->suspend_pre)
-		card->suspend_pre(pdev, state);
+		card->suspend_pre(pdev, PMSG_SUSPEND);
 
 	for (i = 0; i < card->num_links; i++) {
 		struct snd_soc_dai  *cpu_dai = card->dai_link[i].cpu_dai;
+
+		if (card->dai_link[i].ignore_suspend)
+			continue;
+
 		if (cpu_dai->suspend && !cpu_dai->ac97_control)
 			cpu_dai->suspend(cpu_dai);
 		if (platform->suspend)
-			platform->suspend(cpu_dai);
+			platform->suspend(&card->dai_link[i]);
 	}
 
 	/* close any waiting streams and save state */
@@ -670,6 +931,10 @@ static int soc_suspend(struct platform_device *pdev, pm_message_t state)
 
 	for (i = 0; i < codec->num_dai; i++) {
 		char *stream = codec->dai[i].playback.stream_name;
+
+		if (card->dai_link[i].ignore_suspend)
+			continue;
+
 		if (stream != NULL)
 			snd_soc_dapm_stream_event(codec, stream,
 				SND_SOC_DAPM_STREAM_SUSPEND);
@@ -679,17 +944,32 @@ static int soc_suspend(struct platform_device *pdev, pm_message_t state)
 				SND_SOC_DAPM_STREAM_SUSPEND);
 	}
 
-	if (codec_dev->suspend)
-		codec_dev->suspend(pdev, state);
+	/* If there are paths active then the CODEC will be held with
+	 * bias _ON and should not be suspended. */
+	if (codec_dev->suspend) {
+		switch (codec->bias_level) {
+		case SND_SOC_BIAS_STANDBY:
+		case SND_SOC_BIAS_OFF:
+			codec_dev->suspend(pdev, PMSG_SUSPEND);
+			break;
+		default:
+			dev_dbg(socdev->dev, "CODEC is on over suspend\n");
+			break;
+		}
+	}
 
 	for (i = 0; i < card->num_links; i++) {
 		struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai;
+
+		if (card->dai_link[i].ignore_suspend)
+			continue;
+
 		if (cpu_dai->suspend && cpu_dai->ac97_control)
 			cpu_dai->suspend(cpu_dai);
 	}
 
 	if (card->suspend_post)
-		card->suspend_post(pdev, state);
+		card->suspend_post(pdev, PMSG_SUSPEND);
 
 	return 0;
 }
@@ -705,7 +985,7 @@ static void soc_resume_deferred(struct work_struct *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 snd_soc_codec *codec = card->codec;
 	struct platform_device *pdev = to_platform_device(socdev->dev);
 	int i;
 
@@ -715,20 +995,44 @@ static void soc_resume_deferred(struct work_struct *work)
 
 	dev_dbg(socdev->dev, "starting resume work\n");
 
+	/* Bring us up into D2 so that DAPM starts enabling things */
+	snd_power_change_state(codec->card, SNDRV_CTL_POWER_D2);
+
 	if (card->resume_pre)
 		card->resume_pre(pdev);
 
 	for (i = 0; i < card->num_links; i++) {
 		struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai;
+
+		if (card->dai_link[i].ignore_suspend)
+			continue;
+
 		if (cpu_dai->resume && cpu_dai->ac97_control)
 			cpu_dai->resume(cpu_dai);
 	}
 
-	if (codec_dev->resume)
-		codec_dev->resume(pdev);
+	/* If the CODEC was idle over suspend then it will have been
+	 * left with bias OFF or STANDBY and suspended so we must now
+	 * resume.  Otherwise the suspend was suppressed.
+	 */
+	if (codec_dev->resume) {
+		switch (codec->bias_level) {
+		case SND_SOC_BIAS_STANDBY:
+		case SND_SOC_BIAS_OFF:
+			codec_dev->resume(pdev);
+			break;
+		default:
+			dev_dbg(socdev->dev, "CODEC was on over suspend\n");
+			break;
+		}
+	}
 
 	for (i = 0; i < codec->num_dai; i++) {
 		char *stream = codec->dai[i].playback.stream_name;
+
+		if (card->dai_link[i].ignore_suspend)
+			continue;
+
 		if (stream != NULL)
 			snd_soc_dapm_stream_event(codec, stream,
 				SND_SOC_DAPM_STREAM_RESUME);
@@ -741,16 +1045,24 @@ static void soc_resume_deferred(struct work_struct *work)
 	/* unmute any active DACs */
 	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);
+
+		if (card->dai_link[i].ignore_suspend)
+			continue;
+
+		if (dai->ops->digital_mute && dai->playback.active)
+			dai->ops->digital_mute(dai, 0);
 	}
 
 	for (i = 0; i < card->num_links; i++) {
 		struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai;
+
+		if (card->dai_link[i].ignore_suspend)
+			continue;
+
 		if (cpu_dai->resume && !cpu_dai->ac97_control)
 			cpu_dai->resume(cpu_dai);
 		if (platform->resume)
-			platform->resume(cpu_dai);
+			platform->resume(&card->dai_link[i]);
 	}
 
 	if (card->resume_post)
@@ -763,30 +1075,50 @@ static void soc_resume_deferred(struct work_struct *work)
 }
 
 /* powers up audio subsystem after a suspend */
-static int soc_resume(struct platform_device *pdev)
+static int soc_resume(struct device *dev)
 {
+	struct platform_device *pdev = to_platform_device(dev);
 	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 	struct snd_soc_card *card = socdev->card;
+	struct snd_soc_dai *cpu_dai = card->dai_link[0].cpu_dai;
 
-	dev_dbg(socdev->dev, "scheduling resume work\n");
+	/* If the initialization of this soc device failed, there is no codec
+	 * associated with it. Just bail out in this case.
+	 */
+	if (!card->codec)
+		return 0;
 
-	if (!schedule_work(&card->deferred_resume_work))
-		dev_err(socdev->dev, "resume work item may be lost\n");
+	/* AC97 devices might have other drivers hanging off them so
+	 * need to resume immediately.  Other drivers don't have that
+	 * problem and may take a substantial amount of time to resume
+	 * due to I/O costs and anti-pop so handle them out of line.
+	 */
+	if (cpu_dai->ac97_control) {
+		dev_dbg(socdev->dev, "Resuming AC97 immediately\n");
+		soc_resume_deferred(&card->deferred_resume_work);
+	} else {
+		dev_dbg(socdev->dev, "Scheduling resume work\n");
+		if (!schedule_work(&card->deferred_resume_work))
+			dev_err(socdev->dev, "resume work item may be lost\n");
+	}
 
 	return 0;
 }
-
 #else
 #define soc_suspend	NULL
 #define soc_resume	NULL
 #endif
 
+static struct snd_soc_dai_ops null_dai_ops = {
+};
+
 static void snd_soc_instantiate_card(struct snd_soc_card *card)
 {
 	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_codec *codec;
 	struct snd_soc_platform *platform;
 	struct snd_soc_dai *dai;
 	int i, found, ret, ac97;
@@ -824,6 +1156,11 @@ static void snd_soc_instantiate_card(struct snd_soc_card *card)
 			ac97 = 1;
 	}
 
+	for (i = 0; i < card->num_links; i++) {
+		if (!card->dai_link[i].codec_dai->ops)
+			card->dai_link[i].codec_dai->ops = &null_dai_ops;
+	}
+
 	/* 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
@@ -850,6 +1187,8 @@ static void snd_soc_instantiate_card(struct snd_soc_card *card)
 	dev_dbg(card->dev, "All components present, instantiating\n");
 
 	/* Found everything, bring it up */
+	card->pmdown_time = pmdown_time;
+
 	if (card->probe) {
 		ret = card->probe(pdev);
 		if (ret < 0)
@@ -870,6 +1209,7 @@ static void snd_soc_instantiate_card(struct snd_soc_card *card)
 		if (ret < 0)
 			goto cpu_dai_err;
 	}
+	codec = card->codec;
 
 	if (platform->probe) {
 		ret = platform->probe(pdev);
@@ -884,10 +1224,73 @@ static void snd_soc_instantiate_card(struct snd_soc_card *card)
 	INIT_WORK(&card->deferred_resume_work, soc_resume_deferred);
 #endif
 
+	for (i = 0; i < card->num_links; i++) {
+		if (card->dai_link[i].init) {
+			ret = card->dai_link[i].init(codec);
+			if (ret < 0) {
+				printk(KERN_ERR "asoc: failed to init %s\n",
+					card->dai_link[i].stream_name);
+				continue;
+			}
+		}
+		if (card->dai_link[i].codec_dai->ac97_control)
+			ac97 = 1;
+	}
+
+	snprintf(codec->card->shortname, sizeof(codec->card->shortname),
+		 "%s",  card->name);
+	snprintf(codec->card->longname, sizeof(codec->card->longname),
+		 "%s (%s)", card->name, codec->name);
+
+	/* Make sure all DAPM widgets are instantiated */
+	snd_soc_dapm_new_widgets(codec);
+
+	ret = snd_card_register(codec->card);
+	if (ret < 0) {
+		printk(KERN_ERR "asoc: failed to register soundcard for %s\n",
+				codec->name);
+		goto card_err;
+	}
+
+	mutex_lock(&codec->mutex);
+#ifdef CONFIG_SND_SOC_AC97_BUS
+	/* Only instantiate AC97 if not already done by the adaptor
+	 * for the generic AC97 subsystem.
+	 */
+	if (ac97 && strcmp(codec->name, "AC97") != 0) {
+		ret = soc_ac97_dev_register(codec);
+		if (ret < 0) {
+			printk(KERN_ERR "asoc: AC97 device register failed\n");
+			snd_card_free(codec->card);
+			mutex_unlock(&codec->mutex);
+			goto card_err;
+		}
+	}
+#endif
+
+	ret = snd_soc_dapm_sys_add(card->socdev->dev);
+	if (ret < 0)
+		printk(KERN_WARNING "asoc: failed to add dapm sysfs entries\n");
+
+	ret = device_create_file(card->socdev->dev, &dev_attr_pmdown_time);
+	if (ret < 0)
+		printk(KERN_WARNING "asoc: failed to add pmdown_time sysfs\n");
+
+	ret = device_create_file(card->socdev->dev, &dev_attr_codec_reg);
+	if (ret < 0)
+		printk(KERN_WARNING "asoc: failed to add codec sysfs files\n");
+
+	soc_init_codec_debugfs(codec);
+	mutex_unlock(&codec->mutex);
+
 	card->instantiated = 1;
 
 	return;
 
+card_err:
+	if (platform->remove)
+		platform->remove(pdev);
+
 platform_err:
 	if (codec_dev->remove)
 		codec_dev->remove(pdev);
@@ -944,251 +1347,149 @@ static int soc_remove(struct platform_device *pdev)
 	struct snd_soc_platform *platform = card->platform;
 	struct snd_soc_codec_device *codec_dev = socdev->codec_dev;
 
-	run_delayed_work(&card->delayed_work);
-
-	if (platform->remove)
-		platform->remove(pdev);
-
-	if (codec_dev->remove)
-		codec_dev->remove(pdev);
-
-	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 (card->instantiated) {
+		run_delayed_work(&card->delayed_work);
 
-	if (card->remove)
-		card->remove(pdev);
+		if (platform->remove)
+			platform->remove(pdev);
 
-	snd_soc_unregister_card(card);
-
-	return 0;
-}
-
-/* ASoC platform driver */
-static struct platform_driver soc_driver = {
-	.driver		= {
-		.name		= "soc-audio",
-		.owner		= THIS_MODULE,
-	},
-	.probe		= soc_probe,
-	.remove		= soc_remove,
-	.suspend	= soc_suspend,
-	.resume		= soc_resume,
-};
+		if (codec_dev->remove)
+			codec_dev->remove(pdev);
 
-/* create a new pcm */
-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;
-	struct snd_pcm *pcm;
-	char new_name[64];
-	int ret = 0, playback = 0, capture = 0;
-
-	rtd = kzalloc(sizeof(struct snd_soc_pcm_runtime), GFP_KERNEL);
-	if (rtd == NULL)
-		return -ENOMEM;
-
-	rtd->dai = dai_link;
-	rtd->socdev = socdev;
-	codec_dai->codec = socdev->codec;
-
-	/* check client and interface hw capabilities */
-	sprintf(new_name, "%s %s-%d", dai_link->stream_name, codec_dai->name,
-		num);
-
-	if (codec_dai->playback.channels_min)
-		playback = 1;
-	if (codec_dai->capture.channels_min)
-		capture = 1;
-
-	ret = snd_pcm_new(codec->card, new_name, codec->pcm_devs++, playback,
-		capture, &pcm);
-	if (ret < 0) {
-		printk(KERN_ERR "asoc: can't create pcm for codec %s\n",
-			codec->name);
-		kfree(rtd);
-		return ret;
-	}
-
-	dai_link->pcm = pcm;
-	pcm->private_data = rtd;
-	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);
-
-	if (capture)
-		snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &soc_pcm_ops);
-
-	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 = 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 soc_codec_reg_show(struct snd_soc_device *devdata, char *buf)
-{
-	struct snd_soc_codec *codec = devdata->codec;
-	int i, step = 1, count = 0;
-
-	if (!codec->reg_cache_size)
-		return 0;
-
-	if (codec->reg_cache_step)
-		step = codec->reg_cache_step;
-
-	count += sprintf(buf, "%s registers\n", codec->name);
-	for (i = 0; i < codec->reg_cache_size; i += step) {
-		count += sprintf(buf + count, "%2x: ", i);
-		if (count >= PAGE_SIZE - 1)
-			break;
-
-		if (codec->display_register)
-			count += codec->display_register(codec, buf + count,
-							 PAGE_SIZE - count, i);
-		else
-			count += snprintf(buf + count, PAGE_SIZE - count,
-					  "%4x", codec->read(codec, i));
-
-		if (count >= PAGE_SIZE - 1)
-			break;
+		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);
+		}
 
-		count += snprintf(buf + count, PAGE_SIZE - count, "\n");
-		if (count >= PAGE_SIZE - 1)
-			break;
+		if (card->remove)
+			card->remove(pdev);
 	}
 
-	/* Truncate count; min() would cause a warning */
-	if (count >= PAGE_SIZE)
-		count = PAGE_SIZE - 1;
-
-	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);
+	snd_soc_unregister_card(card);
 
-#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)
+static int soc_poweroff(struct device *dev)
 {
-	char buf[32];
-	int buf_size;
-	char *start = buf;
-	unsigned long reg, value;
-	int step = 1;
-	struct snd_soc_codec *codec = file->private_data;
+	struct platform_device *pdev = to_platform_device(dev);
+	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+	struct snd_soc_card *card = socdev->card;
 
-	buf_size = min(count, (sizeof(buf)-1));
-	if (copy_from_user(buf, user_buf, buf_size))
-		return -EFAULT;
-	buf[buf_size] = 0;
+	if (!card->instantiated)
+		return 0;
 
-	if (codec->reg_cache_step)
-		step = codec->reg_cache_step;
+	/* Flush out pmdown_time work - we actually do want to run it
+	 * now, we're shutting down so no imminent restart. */
+	run_delayed_work(&card->delayed_work);
 
-	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;
+	snd_soc_dapm_shutdown(socdev);
+
+	return 0;
 }
 
-static const struct file_operations codec_reg_fops = {
-	.open = codec_reg_open_file,
-	.read = codec_reg_read_file,
-	.write = codec_reg_write_file,
+static const struct dev_pm_ops soc_pm_ops = {
+	.suspend = soc_suspend,
+	.resume = soc_resume,
+	.poweroff = soc_poweroff,
 };
 
-static void soc_init_codec_debugfs(struct snd_soc_codec *codec)
+/* ASoC platform driver */
+static struct platform_driver soc_driver = {
+	.driver		= {
+		.name		= "soc-audio",
+		.owner		= THIS_MODULE,
+		.pm		= &soc_pm_ops,
+	},
+	.probe		= soc_probe,
+	.remove		= soc_remove,
+};
+
+/* create a new pcm */
+static int soc_new_pcm(struct snd_soc_device *socdev,
+	struct snd_soc_dai_link *dai_link, int num)
 {
-	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");
+	struct snd_soc_card *card = socdev->card;
+	struct snd_soc_codec *codec = card->codec;
+	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;
+	struct snd_pcm *pcm;
+	char new_name[64];
+	int ret = 0, playback = 0, capture = 0;
 
-	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");
-}
+	rtd = kzalloc(sizeof(struct snd_soc_pcm_runtime), GFP_KERNEL);
+	if (rtd == NULL)
+		return -ENOMEM;
 
-static void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
-{
-	debugfs_remove(codec->debugfs_pop_time);
-	debugfs_remove(codec->debugfs_reg);
-}
+	rtd->dai = dai_link;
+	rtd->socdev = socdev;
+	codec_dai->codec = card->codec;
 
-#else
+	/* check client and interface hw capabilities */
+	snprintf(new_name, sizeof(new_name), "%s %s-%d",
+		 dai_link->stream_name, codec_dai->name, num);
 
-static inline void soc_init_codec_debugfs(struct snd_soc_codec *codec)
-{
+	if (codec_dai->playback.channels_min)
+		playback = 1;
+	if (codec_dai->capture.channels_min)
+		capture = 1;
+
+	ret = snd_pcm_new(codec->card, new_name, codec->pcm_devs++, playback,
+		capture, &pcm);
+	if (ret < 0) {
+		printk(KERN_ERR "asoc: can't create pcm for codec %s\n",
+			codec->name);
+		kfree(rtd);
+		return ret;
+	}
+
+	dai_link->pcm = pcm;
+	pcm->private_data = rtd;
+	soc_pcm_ops.mmap = platform->pcm_ops->mmap;
+	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);
+
+	if (capture)
+		snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &soc_pcm_ops);
+
+	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 = platform->pcm_free;
+	printk(KERN_INFO "asoc: %s <-> %s mapping ok\n", codec_dai->name,
+		cpu_dai->name);
+	return ret;
 }
 
-static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
+/**
+ * snd_soc_codec_volatile_register: Report if a register is volatile.
+ *
+ * @codec: CODEC to query.
+ * @reg: Register to query.
+ *
+ * Boolean function indiciating if a CODEC register is volatile.
+ */
+int snd_soc_codec_volatile_register(struct snd_soc_codec *codec, int reg)
 {
+	if (codec->volatile_register)
+		return codec->volatile_register(reg);
+	else
+		return 0;
 }
-#endif
+EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register);
 
 /**
  * snd_soc_new_ac97_codec - initailise AC97 device
@@ -1219,6 +1520,7 @@ int snd_soc_new_ac97_codec(struct snd_soc_codec *codec,
 
 	codec->ac97->bus->ops = ops;
 	codec->ac97->num = num;
+	codec->dev = &codec->ac97->dev;
 	mutex_unlock(&codec->mutex);
 	return 0;
 }
@@ -1252,24 +1554,47 @@ EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec);
  * Returns 1 for change else 0.
  */
 int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg,
-				unsigned short mask, unsigned short value)
+				unsigned int mask, unsigned int value)
 {
 	int change;
-	unsigned short old, new;
+	unsigned int old, new;
 
-	mutex_lock(&io_mutex);
 	old = snd_soc_read(codec, reg);
 	new = (old & ~mask) | value;
 	change = old != new;
 	if (change)
 		snd_soc_write(codec, reg, new);
 
-	mutex_unlock(&io_mutex);
 	return change;
 }
 EXPORT_SYMBOL_GPL(snd_soc_update_bits);
 
 /**
+ * snd_soc_update_bits_locked - update codec register bits
+ * @codec: audio codec
+ * @reg: codec register
+ * @mask: register mask
+ * @value: new value
+ *
+ * Writes new register value, and takes the codec mutex.
+ *
+ * Returns 1 for change else 0.
+ */
+int snd_soc_update_bits_locked(struct snd_soc_codec *codec,
+			       unsigned short reg, unsigned int mask,
+			       unsigned int value)
+{
+	int change;
+
+	mutex_lock(&codec->mutex);
+	change = snd_soc_update_bits(codec, reg, mask, value);
+	mutex_unlock(&codec->mutex);
+
+	return change;
+}
+EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked);
+
+/**
  * snd_soc_test_bits - test register for change
  * @codec: audio codec
  * @reg: codec register
@@ -1282,16 +1607,14 @@ EXPORT_SYMBOL_GPL(snd_soc_update_bits);
  * Returns 1 for change else 0.
  */
 int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg,
-				unsigned short mask, unsigned short value)
+				unsigned int mask, unsigned int value)
 {
 	int change;
-	unsigned short old, new;
+	unsigned int old, new;
 
-	mutex_lock(&io_mutex);
 	old = snd_soc_read(codec, reg);
 	new = (old & ~mask) | value;
 	change = old != new;
-	mutex_unlock(&io_mutex);
 
 	return change;
 }
@@ -1309,8 +1632,8 @@ 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_card *card = socdev->card;
+	struct snd_soc_codec *codec = card->codec;
 	int ret, i;
 
 	mutex_lock(&codec->mutex);
@@ -1324,6 +1647,7 @@ int snd_soc_new_pcms(struct snd_soc_device *socdev, int idx, const char *xid)
 		return ret;
 	}
 
+	codec->socdev = socdev;
 	codec->card->dev = socdev->dev;
 	codec->card->private_data = codec;
 	strncpy(codec->card->driver, codec->name, sizeof(codec->card->driver));
@@ -1337,80 +1661,17 @@ int snd_soc_new_pcms(struct snd_soc_device *socdev, int idx, const char *xid)
 			mutex_unlock(&codec->mutex);
 			return ret;
 		}
-	}
-
-	mutex_unlock(&codec->mutex);
-	return ret;
-}
-EXPORT_SYMBOL_GPL(snd_soc_new_pcms);
-
-/**
- * snd_soc_init_card - register sound card
- * @socdev: the SoC audio device
- *
- * Register a SoC sound card. Also registers an AC97 device if the
- * codec is AC97 for ad hoc devices.
- *
- * Returns 0 for success, else error.
- */
-int snd_soc_init_card(struct snd_soc_device *socdev)
-{
-	struct snd_soc_codec *codec = socdev->codec;
-	struct snd_soc_card *card = socdev->card;
-	int ret = 0, i, ac97 = 0, err = 0;
-
-	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",
-					card->dai_link[i].stream_name);
-				continue;
-			}
-		}
-		if (card->dai_link[i].codec_dai->ac97_control)
-			ac97 = 1;
-	}
-	snprintf(codec->card->shortname, sizeof(codec->card->shortname),
-		 "%s",  card->name);
-	snprintf(codec->card->longname, sizeof(codec->card->longname),
-		 "%s (%s)", card->name, codec->name);
-
-	ret = snd_card_register(codec->card);
-	if (ret < 0) {
-		printk(KERN_ERR "asoc: failed to register soundcard for %s\n",
-				codec->name);
-		goto out;
-	}
-
-	mutex_lock(&codec->mutex);
-#ifdef CONFIG_SND_SOC_AC97_BUS
-	if (ac97) {
-		ret = soc_ac97_dev_register(codec);
-		if (ret < 0) {
-			printk(KERN_ERR "asoc: AC97 device register failed\n");
-			snd_card_free(codec->card);
-			mutex_unlock(&codec->mutex);
-			goto out;
+		/* Check for codec->ac97 to handle the ac97.c fun */
+		if (card->dai_link[i].codec_dai->ac97_control && codec->ac97) {
+			snd_ac97_dev_add_pdata(codec->ac97,
+				card->dai_link[i].cpu_dai->ac97_pdata);
 		}
 	}
-#endif
-
-	err = snd_soc_dapm_sys_add(socdev->dev);
-	if (err < 0)
-		printk(KERN_WARNING "asoc: failed to add dapm sysfs entries\n");
 
-	err = device_create_file(socdev->dev, &dev_attr_codec_reg);
-	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_init_card);
+EXPORT_SYMBOL_GPL(snd_soc_new_pcms);
 
 /**
  * snd_soc_free_pcms - free sound card and pcms
@@ -1421,18 +1682,19 @@ EXPORT_SYMBOL_GPL(snd_soc_init_card);
  */
 void snd_soc_free_pcms(struct snd_soc_device *socdev)
 {
-	struct snd_soc_codec *codec = socdev->codec;
+	struct snd_soc_codec *codec = socdev->card->codec;
 #ifdef CONFIG_SND_SOC_AC97_BUS
 	struct snd_soc_dai *codec_dai;
 	int i;
 #endif
 
 	mutex_lock(&codec->mutex);
-	soc_cleanup_codec_debugfs(socdev->codec);
+	soc_cleanup_codec_debugfs(codec);
 #ifdef CONFIG_SND_SOC_AC97_BUS
 	for (i = 0; i < codec->num_dai; i++) {
 		codec_dai = &codec->dai[i];
-		if (codec_dai->ac97_control && codec->ac97) {
+		if (codec_dai->ac97_control && codec->ac97 &&
+		    strcmp(codec->name, "AC97") != 0) {
 			soc_ac97_dev_unregister(codec);
 			goto free_card;
 		}
@@ -1495,6 +1757,37 @@ struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
 EXPORT_SYMBOL_GPL(snd_soc_cnew);
 
 /**
+ * snd_soc_add_controls - add an array of controls to a codec.
+ * Convienience function to add a list of controls. Many codecs were
+ * duplicating this code.
+ *
+ * @codec: codec to add controls to
+ * @controls: array of controls to add
+ * @num_controls: number of elements in the array
+ *
+ * Return 0 for success, else error.
+ */
+int snd_soc_add_controls(struct snd_soc_codec *codec,
+	const struct snd_kcontrol_new *controls, int num_controls)
+{
+	struct snd_card *card = codec->card;
+	int err, i;
+
+	for (i = 0; i < num_controls; i++) {
+		const struct snd_kcontrol_new *control = &controls[i];
+		err = snd_ctl_add(card, snd_soc_cnew(control, codec, NULL));
+		if (err < 0) {
+			dev_err(codec->dev, "%s: Failed to add %s\n",
+				codec->name, control->name);
+			return err;
+		}
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_add_controls);
+
+/**
  * snd_soc_info_enum_double - enumerated double mixer info callback
  * @kcontrol: mixer control
  * @uinfo: control element information
@@ -1535,7 +1828,7 @@ int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
 {
 	struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 	struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
-	unsigned short val, bitmask;
+	unsigned int val, bitmask;
 
 	for (bitmask = 1; bitmask < e->max; bitmask <<= 1)
 		;
@@ -1564,8 +1857,8 @@ int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
 {
 	struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 	struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
-	unsigned short val;
-	unsigned short mask, bitmask;
+	unsigned int val;
+	unsigned int mask, bitmask;
 
 	for (bitmask = 1; bitmask < e->max; bitmask <<= 1)
 		;
@@ -1580,7 +1873,7 @@ int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
 		mask |= (bitmask - 1) << e->shift_r;
 	}
 
-	return snd_soc_update_bits(codec, e->reg, mask, val);
+	return snd_soc_update_bits_locked(codec, e->reg, mask, val);
 }
 EXPORT_SYMBOL_GPL(snd_soc_put_enum_double);
 
@@ -1601,7 +1894,7 @@ int snd_soc_get_value_enum_double(struct snd_kcontrol *kcontrol,
 {
 	struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 	struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
-	unsigned short reg_val, val, mux;
+	unsigned int reg_val, val, mux;
 
 	reg_val = snd_soc_read(codec, e->reg);
 	val = (reg_val >> e->shift_l) & e->mask;
@@ -1640,8 +1933,8 @@ int snd_soc_put_value_enum_double(struct snd_kcontrol *kcontrol,
 {
 	struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 	struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
-	unsigned short val;
-	unsigned short mask;
+	unsigned int val;
+	unsigned int mask;
 
 	if (ucontrol->value.enumerated.item[0] > e->max - 1)
 		return -EINVAL;
@@ -1654,7 +1947,7 @@ int snd_soc_put_value_enum_double(struct snd_kcontrol *kcontrol,
 		mask |= e->mask << e->shift_r;
 	}
 
-	return snd_soc_update_bits(codec, e->reg, mask, val);
+	return snd_soc_update_bits_locked(codec, e->reg, mask, val);
 }
 EXPORT_SYMBOL_GPL(snd_soc_put_value_enum_double);
 
@@ -1699,7 +1992,7 @@ int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol,
 {
 	int max = kcontrol->private_value;
 
-	if (max == 1)
+	if (max == 1 && !strstr(kcontrol->id.name, " Volume"))
 		uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
 	else
 		uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
@@ -1725,18 +2018,22 @@ int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
 {
 	struct soc_mixer_control *mc =
 		(struct soc_mixer_control *)kcontrol->private_value;
-	int max = mc->max;
+	int platform_max;
 	unsigned int shift = mc->shift;
 	unsigned int rshift = mc->rshift;
 
-	if (max == 1)
+	if (!mc->platform_max)
+		mc->platform_max = mc->max;
+	platform_max = mc->platform_max;
+
+	if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume"))
 		uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
 	else
 		uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 
 	uinfo->count = shift == rshift ? 1 : 2;
 	uinfo->value.integer.min = 0;
-	uinfo->value.integer.max = max;
+	uinfo->value.integer.max = platform_max;
 	return 0;
 }
 EXPORT_SYMBOL_GPL(snd_soc_info_volsw);
@@ -1801,7 +2098,7 @@ int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
 	int max = mc->max;
 	unsigned int mask = (1 << fls(max)) - 1;
 	unsigned int invert = mc->invert;
-	unsigned short val, val2, val_mask;
+	unsigned int val, val2, val_mask;
 
 	val = (ucontrol->value.integer.value[0] & mask);
 	if (invert)
@@ -1815,7 +2112,7 @@ int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
 		val_mask |= mask << rshift;
 		val |= val2 << rshift;
 	}
-	return snd_soc_update_bits(codec, reg, val_mask, val);
+	return snd_soc_update_bits_locked(codec, reg, val_mask, val);
 }
 EXPORT_SYMBOL_GPL(snd_soc_put_volsw);
 
@@ -1834,16 +2131,20 @@ int snd_soc_info_volsw_2r(struct snd_kcontrol *kcontrol,
 {
 	struct soc_mixer_control *mc =
 		(struct soc_mixer_control *)kcontrol->private_value;
-	int max = mc->max;
+	int platform_max;
 
-	if (max == 1)
+	if (!mc->platform_max)
+		mc->platform_max = mc->max;
+	platform_max = mc->platform_max;
+
+	if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume"))
 		uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
 	else
 		uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 
 	uinfo->count = 2;
 	uinfo->value.integer.min = 0;
-	uinfo->value.integer.max = max;
+	uinfo->value.integer.max = platform_max;
 	return 0;
 }
 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r);
@@ -1867,7 +2168,7 @@ int snd_soc_get_volsw_2r(struct snd_kcontrol *kcontrol,
 	unsigned int reg2 = mc->rreg;
 	unsigned int shift = mc->shift;
 	int max = mc->max;
-	unsigned int mask = (1<<fls(max))-1;
+	unsigned int mask = (1 << fls(max)) - 1;
 	unsigned int invert = mc->invert;
 
 	ucontrol->value.integer.value[0] =
@@ -1907,7 +2208,7 @@ int snd_soc_put_volsw_2r(struct snd_kcontrol *kcontrol,
 	unsigned int mask = (1 << fls(max)) - 1;
 	unsigned int invert = mc->invert;
 	int err;
-	unsigned short val, val2, val_mask;
+	unsigned int val, val2, val_mask;
 
 	val_mask = mask << shift;
 	val = (ucontrol->value.integer.value[0] & mask);
@@ -1921,11 +2222,11 @@ int snd_soc_put_volsw_2r(struct snd_kcontrol *kcontrol,
 	val = val << shift;
 	val2 = val2 << shift;
 
-	err = snd_soc_update_bits(codec, reg, val_mask, val);
+	err = snd_soc_update_bits_locked(codec, reg, val_mask, val);
 	if (err < 0)
 		return err;
 
-	err = snd_soc_update_bits(codec, reg2, val_mask, val2);
+	err = snd_soc_update_bits_locked(codec, reg2, val_mask, val2);
 	return err;
 }
 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r);
@@ -1944,13 +2245,17 @@ int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol,
 {
 	struct soc_mixer_control *mc =
 		(struct soc_mixer_control *)kcontrol->private_value;
-	int max = mc->max;
+	int platform_max;
 	int min = mc->min;
 
+	if (!mc->platform_max)
+		mc->platform_max = mc->max;
+	platform_max = mc->platform_max;
+
 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 	uinfo->count = 2;
 	uinfo->value.integer.min = 0;
-	uinfo->value.integer.max = max-min;
+	uinfo->value.integer.max = platform_max - min;
 	return 0;
 }
 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8);
@@ -1999,16 +2304,55 @@ int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol,
 	struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 	unsigned int reg = mc->reg;
 	int min = mc->min;
-	unsigned short val;
+	unsigned int val;
 
 	val = (ucontrol->value.integer.value[0]+min) & 0xff;
 	val |= ((ucontrol->value.integer.value[1]+min) & 0xff) << 8;
 
-	return snd_soc_update_bits(codec, reg, 0xffff, val);
+	return snd_soc_update_bits_locked(codec, reg, 0xffff, val);
 }
 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8);
 
 /**
+ * snd_soc_limit_volume - Set new limit to an existing volume control.
+ *
+ * @codec: where to look for the control
+ * @name: Name of the control
+ * @max: new maximum limit
+ *
+ * Return 0 for success, else error.
+ */
+int snd_soc_limit_volume(struct snd_soc_codec *codec,
+	const char *name, int max)
+{
+	struct snd_card *card = codec->card;
+	struct snd_kcontrol *kctl;
+	struct soc_mixer_control *mc;
+	int found = 0;
+	int ret = -EINVAL;
+
+	/* Sanity check for name and max */
+	if (unlikely(!name || max <= 0))
+		return -EINVAL;
+
+	list_for_each_entry(kctl, &card->controls, list) {
+		if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name))) {
+			found = 1;
+			break;
+		}
+	}
+	if (found) {
+		mc = (struct soc_mixer_control *)kctl->private_value;
+		if (max <= mc->max) {
+			mc->platform_max = max;
+			ret = 0;
+		}
+	}
+	return ret;
+}
+EXPORT_SYMBOL_GPL(snd_soc_limit_volume);
+
+/**
  * snd_soc_dai_set_sysclk - configure DAI system or master clock.
  * @dai: DAI
  * @clk_id: DAI specific clock ID
@@ -2020,8 +2364,8 @@ 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->ops.set_sysclk)
-		return dai->ops.set_sysclk(dai, clk_id, freq, dir);
+	if (dai->ops && dai->ops->set_sysclk)
+		return dai->ops->set_sysclk(dai, clk_id, freq, dir);
 	else
 		return -EINVAL;
 }
@@ -2040,8 +2384,8 @@ 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->ops.set_clkdiv)
-		return dai->ops.set_clkdiv(dai, div_id, div);
+	if (dai->ops && dai->ops->set_clkdiv)
+		return dai->ops->set_clkdiv(dai, div_id, div);
 	else
 		return -EINVAL;
 }
@@ -2051,16 +2395,18 @@ EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv);
  * snd_soc_dai_set_pll - configure DAI PLL.
  * @dai: DAI
  * @pll_id: DAI specific PLL ID
+ * @source: DAI specific source for the PLL
  * @freq_in: PLL input clock frequency in Hz
  * @freq_out: requested PLL output clock frequency in Hz
  *
  * Configures and enables PLL to generate output clock based on input clock.
  */
-int snd_soc_dai_set_pll(struct snd_soc_dai *dai,
-	int pll_id, unsigned int freq_in, unsigned int freq_out)
+int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source,
+	unsigned int freq_in, unsigned int freq_out)
 {
-	if (dai->ops.set_pll)
-		return dai->ops.set_pll(dai, pll_id, freq_in, freq_out);
+	if (dai->ops && dai->ops->set_pll)
+		return dai->ops->set_pll(dai, pll_id, source,
+					 freq_in, freq_out);
 	else
 		return -EINVAL;
 }
@@ -2075,8 +2421,8 @@ EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll);
  */
 int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
 {
-	if (dai->ops.set_fmt)
-		return dai->ops.set_fmt(dai, fmt);
+	if (dai->ops && dai->ops->set_fmt)
+		return dai->ops->set_fmt(dai, fmt);
 	else
 		return -EINVAL;
 }
@@ -2085,23 +2431,50 @@ EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt);
 /**
  * snd_soc_dai_set_tdm_slot - configure DAI TDM.
  * @dai: DAI
- * @mask: DAI specific mask representing used slots.
+ * @tx_mask: bitmask representing active TX slots.
+ * @rx_mask: bitmask representing active RX slots.
  * @slots: Number of slots in use.
+ * @slot_width: Width in bits for each slot.
  *
  * Configures a DAI for TDM operation. Both mask and slots are codec and DAI
  * specific.
  */
 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
-	unsigned int mask, int slots)
+	unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
 {
-	if (dai->ops.set_sysclk)
-		return dai->ops.set_tdm_slot(dai, mask, slots);
+	if (dai->ops && dai->ops->set_tdm_slot)
+		return dai->ops->set_tdm_slot(dai, tx_mask, rx_mask,
+				slots, slot_width);
 	else
 		return -EINVAL;
 }
 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot);
 
 /**
+ * snd_soc_dai_set_channel_map - configure DAI audio channel map
+ * @dai: DAI
+ * @tx_num: how many TX channels
+ * @tx_slot: pointer to an array which imply the TX slot number channel
+ *           0~num-1 uses
+ * @rx_num: how many RX channels
+ * @rx_slot: pointer to an array which imply the RX slot number channel
+ *           0~num-1 uses
+ *
+ * configure the relationship between channel number and TDM slot number.
+ */
+int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai,
+	unsigned int tx_num, unsigned int *tx_slot,
+	unsigned int rx_num, unsigned int *rx_slot)
+{
+	if (dai->ops && dai->ops->set_channel_map)
+		return dai->ops->set_channel_map(dai, tx_num, tx_slot,
+			rx_num, rx_slot);
+	else
+		return -EINVAL;
+}
+EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map);
+
+/**
  * snd_soc_dai_set_tristate - configure DAI system or master clock.
  * @dai: DAI
  * @tristate: tristate enable
@@ -2110,8 +2483,8 @@ EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot);
  */
 int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate)
 {
-	if (dai->ops.set_sysclk)
-		return dai->ops.set_tristate(dai, tristate);
+	if (dai->ops && dai->ops->set_tristate)
+		return dai->ops->set_tristate(dai, tristate);
 	else
 		return -EINVAL;
 }
@@ -2126,8 +2499,8 @@ EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate);
  */
 int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute)
 {
-	if (dai->ops.digital_mute)
-		return dai->ops.digital_mute(dai, mute);
+	if (dai->ops && dai->ops->digital_mute)
+		return dai->ops->digital_mute(dai, mute);
 	else
 		return -EINVAL;
 }
@@ -2194,6 +2567,9 @@ int snd_soc_register_dai(struct snd_soc_dai *dai)
 	if (!dai->dev)
 		printk(KERN_WARNING "No device for DAI %s\n", dai->name);
 
+	if (!dai->ops)
+		dai->ops = &null_dai_ops;
+
 	INIT_LIST_HEAD(&dai->list);
 
 	mutex_lock(&client_mutex);
@@ -2301,6 +2677,39 @@ void snd_soc_unregister_platform(struct snd_soc_platform *platform)
 }
 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform);
 
+static u64 codec_format_map[] = {
+	SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE,
+	SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_U16_BE,
+	SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE,
+	SNDRV_PCM_FMTBIT_U24_LE | SNDRV_PCM_FMTBIT_U24_BE,
+	SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE,
+	SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_U32_BE,
+	SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
+	SNDRV_PCM_FMTBIT_U24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
+	SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE,
+	SNDRV_PCM_FMTBIT_U20_3LE | SNDRV_PCM_FMTBIT_U20_3BE,
+	SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE,
+	SNDRV_PCM_FMTBIT_U18_3LE | SNDRV_PCM_FMTBIT_U18_3BE,
+	SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE,
+	SNDRV_PCM_FMTBIT_FLOAT64_LE | SNDRV_PCM_FMTBIT_FLOAT64_BE,
+	SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
+	| SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE,
+};
+
+/* Fix up the DAI formats for endianness: codecs don't actually see
+ * the endianness of the data but we're using the CPU format
+ * definitions which do need to include endianness so we ensure that
+ * codec DAIs always have both big and little endian variants set.
+ */
+static void fixup_codec_formats(struct snd_soc_pcm_stream *stream)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(codec_format_map); i++)
+		if (stream->formats & codec_format_map[i])
+			stream->formats |= codec_format_map[i];
+}
+
 /**
  * snd_soc_register_codec - Register a codec with the ASoC core
  *
@@ -2308,6 +2717,8 @@ EXPORT_SYMBOL_GPL(snd_soc_unregister_platform);
  */
 int snd_soc_register_codec(struct snd_soc_codec *codec)
 {
+	int i;
+
 	if (!codec->name)
 		return -EINVAL;
 
@@ -2317,6 +2728,11 @@ int snd_soc_register_codec(struct snd_soc_codec *codec)
 
 	INIT_LIST_HEAD(&codec->list);
 
+	for (i = 0; i < codec->num_dai; i++) {
+		fixup_codec_formats(&codec->dai[i].playback);
+		fixup_codec_formats(&codec->dai[i].capture);
+	}
+
 	mutex_lock(&client_mutex);
 	list_add(&codec->list, &codec_list);
 	snd_soc_instantiate_cards();