CHROMIUM: ASoC: Import entire upstream ASoC tree

sound/soc/soc-core.c

 /*
  * soc-core.c  --  ALSA SoC Audio Layer
  *
  * Copyright 2005 Wolfson Microelectronics PLC.
  * Copyright 2005 Openedhand Ltd.
  * Copyright (C) 2010 Slimlogic Ltd.
  * Copyright (C) 2010 Texas Instruments Inc.
  *
  * Author: Liam Girdwood <lrg@slimlogic.co.uk>
  *         with code, comments and ideas from :-
@@ skipping 15 matching lines @@
 #include <linux/moduleparam.h>
 #include <linux/init.h>
 #include <linux/delay.h>
 #include <linux/pm.h>
 #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/jack.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
 #include <sound/soc.h>
-#include <sound/soc-dapm.h>
 #include <sound/initval.h>
 
+#define CREATE_TRACE_POINTS
+#include <trace/events/asoc.h>
+
 #define NAME_SIZE       32
 
 static DEFINE_MUTEX(pcm_mutex);
 static DECLARE_WAIT_QUEUE_HEAD(soc_pm_waitq);
 
 #ifdef CONFIG_DEBUG_FS
-struct dentry *asoc_debugfs_root;
-EXPORT_SYMBOL_GPL(asoc_debugfs_root);
+struct dentry *snd_soc_debugfs_root;
+EXPORT_SYMBOL_GPL(snd_soc_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);
 static int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num);
 
 /*
  * 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.
  * between two audio tracks.
  */
 static int pmdown_time = 5000;
 module_param(pmdown_time, int, 0);
 MODULE_PARM_DESC(pmdown_time, "DAPM stream powerdown time (msecs)");
 
-/*
- * This function forces any delayed work to be queued and run.
- */
-static int run_delayed_work(struct delayed_work *dwork)
+/* returns the minimum number of bytes needed to represent
+ * a particular given value */
+static int min_bytes_needed(unsigned long val)
 {
+        int c = 0;
+        int i;
+
+        for (i = (sizeof val * 8) - 1; i >= 0; --i, ++c)
+                if (val & (1UL << i))
+                        break;
+        c = (sizeof val * 8) - c;
+        if (!c || (c % 8))
+                c = (c + 8) / 8;
+        else
+                c /= 8;
+        return c;
+}
+
+/* fill buf which is 'len' bytes with a formatted
+ * string of the form 'reg: value\n' */
+static int format_register_str(struct snd_soc_codec *codec,
+                               unsigned int reg, char *buf, size_t len)
+{
+        int wordsize = codec->driver->reg_word_size * 2;
+        int regsize = min_bytes_needed(codec->driver->reg_cache_size) * 2;
         int ret;
+        char tmpbuf[len + 1];
+        char regbuf[regsize + 1];
 
-        /* cancel any work waiting to be queued. */
-        ret = cancel_delayed_work(dwork);
+        /* since tmpbuf is allocated on the stack, warn the callers if they
+         * try to abuse this function */
+        WARN_ON(len > 63);
 
-        /* if there was any work waiting then we run it now and
-         * wait for it's completion */
-        if (ret) {
-                schedule_delayed_work(dwork, 0);
-                flush_scheduled_work();
+        /* +2 for ': ' and + 1 for '\n' */
+        if (wordsize + regsize + 2 + 1 != len)
+                return -EINVAL;
+
+        ret = snd_soc_read(codec , reg);
+        if (ret < 0) {
+                memset(regbuf, 'X', regsize);
+                regbuf[regsize] = '\0';
+        } else {
+                snprintf(regbuf, regsize + 1, "%.*x", regsize, ret);
         }
-        return ret;
+
+        /* prepare the buffer */
+        snprintf(tmpbuf, len + 1, "%.*x: %s\n", wordsize, reg, regbuf);
+        /* copy it back to the caller without the '\0' */
+        memcpy(buf, tmpbuf, len);
+
+        return 0;
 }
 
 /* codec register dump */
-static ssize_t soc_codec_reg_show(struct snd_soc_codec *codec, char *buf)
+static ssize_t soc_codec_reg_show(struct snd_soc_codec *codec, char *buf,
+                                  size_t count, loff_t pos)
 {
-        int ret, i, step = 1, count = 0;
+        int i, step = 1;
+        int wordsize, regsize;
+        int len;
+        size_t total = 0;
+        loff_t p = 0;
+
+        wordsize = codec->driver->reg_word_size * 2;
+        regsize = min_bytes_needed(codec->driver->reg_cache_size) * 2;
+
+        len = wordsize + regsize + 2 + 1;
 
         if (!codec->driver->reg_cache_size)
                 return 0;
 
         if (codec->driver->reg_cache_step)
                 step = codec->driver->reg_cache_step;
 
-        count += sprintf(buf, "%s registers\n", codec->name);
         for (i = 0; i < codec->driver->reg_cache_size; i += step) {
-                if (codec->driver->readable_register && !codec->driver->readable_register(i))
+                if (codec->readable_register && !codec->readable_register(codec, i))
                         continue;
-
-                count += sprintf(buf + count, "%2x: ", i);
-                if (count >= PAGE_SIZE - 1)
-                        break;
-
                 if (codec->driver->display_register) {
                         count += codec->driver->display_register(codec, buf + count,
                                                          PAGE_SIZE - count, i);
                 } else {
-                        /* If the read fails it's almost certainly due to
-                         * the register being volatile and the device being
-                         * powered off.
-                         */
-                        ret = codec->driver->read(codec, i);
-                        if (ret >= 0)
-                                count += snprintf(buf + count,
-                                                  PAGE_SIZE - count,
-                                                  "%4x", ret);
-                        else
-                                count += snprintf(buf + count,
-                                                  PAGE_SIZE - count,
-                                                  "<no data: %d>", ret);
+                        /* only support larger than PAGE_SIZE bytes debugfs
+                         * entries for the default case */
+                        if (p >= pos) {
+                                if (total + len >= count - 1)
+                                        break;
+                                format_register_str(codec, i, buf + total, len);
+                                total += len;
+                        }
+                        p += len;
                 }
-
-                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;
+        total = min(total, count - 1);
 
-        return count;
+        return total;
 }
+
 static ssize_t codec_reg_show(struct device *dev,
         struct device_attribute *attr, char *buf)
 {
         struct snd_soc_pcm_runtime *rtd =
                         container_of(dev, struct snd_soc_pcm_runtime, dev);
 
-        return soc_codec_reg_show(rtd->codec, buf);
+        return soc_codec_reg_show(rtd->codec, buf, PAGE_SIZE, 0);
 }
 
 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_pcm_runtime *rtd =
                         container_of(dev, struct snd_soc_pcm_runtime, dev);
 
@@ skipping 18 matching lines @@
 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)
+                                   size_t count, loff_t *ppos)
 {
         ssize_t ret;
         struct snd_soc_codec *codec = file->private_data;
-        char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
+        char *buf;
+
+        if (*ppos < 0 || !count)
+                return -EINVAL;
+
+        buf = kmalloc(count, 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);
+
+        ret = soc_codec_reg_show(codec, buf, count, *ppos);
+        if (ret >= 0) {
+                if (copy_to_user(user_buf, buf, ret)) {
+                        kfree(buf);
+                        return -EFAULT;
+                }
+                *ppos += 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;
@@ skipping 11 matching lines @@
 
         while (*start == ' ')
                 start++;
         reg = simple_strtoul(start, &start, 16);
         if ((reg >= codec->driver->reg_cache_size) || (reg % step))
                 return -EINVAL;
         while (*start == ' ')
                 start++;
         if (strict_strtoul(start, 16, &value))
                 return -EINVAL;
-        codec->driver->write(codec, reg, value);
+
+        /* Userspace has been fiddling around behind the kernel's back */
+        add_taint(TAINT_USER);
+
+        snd_soc_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,
         .llseek = default_llseek,
 };
 
 static void soc_init_codec_debugfs(struct snd_soc_codec *codec)
 {
-        codec->debugfs_codec_root = debugfs_create_dir(codec->name ,
-                                                       asoc_debugfs_root);
+        struct dentry *debugfs_card_root = codec->card->debugfs_card_root;
+
+        codec->debugfs_codec_root = debugfs_create_dir(codec->name,
+                                                       debugfs_card_root);
         if (!codec->debugfs_codec_root) {
                 printk(KERN_WARNING
                        "ASoC: Failed to create codec debugfs directory\n");
                 return;
         }
 
+        debugfs_create_bool("cache_sync", 0444, codec->debugfs_codec_root,
+                            &codec->cache_sync);
+        debugfs_create_bool("cache_only", 0444, codec->debugfs_codec_root,
+                            &codec->cache_only);
+
         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", 0644,
-                                                     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->dapm.debugfs_dapm = debugfs_create_dir("dapm",
                                                  codec->debugfs_codec_root);
-        if (!codec->debugfs_dapm)
+        if (!codec->dapm.debugfs_dapm)
                 printk(KERN_WARNING
                        "Failed to create DAPM debugfs directory\n");
 
-        snd_soc_dapm_debugfs_init(codec);
+        snd_soc_dapm_debugfs_init(&codec->dapm);
 }
 
 static void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
 {
         debugfs_remove_recursive(codec->debugfs_codec_root);
 }
 
 static ssize_t codec_list_read_file(struct file *file, char __user *user_buf,
                                     size_t count, loff_t *ppos)
 {
@@ skipping 87 matching lines @@
         kfree(buf);
 
         return ret;
 }
 
 static const struct file_operations platform_list_fops = {
         .read = platform_list_read_file,
         .llseek = default_llseek,/* read accesses f_pos */
 };
 
+static void soc_init_card_debugfs(struct snd_soc_card *card)
+{
+        card->debugfs_card_root = debugfs_create_dir(card->name,
+                                                     snd_soc_debugfs_root);
+        if (!card->debugfs_card_root) {
+                dev_warn(card->dev,
+                         "ASoC: Failed to create codec debugfs directory\n");
+                return;
+        }
+
+        card->debugfs_pop_time = debugfs_create_u32("dapm_pop_time", 0644,
+                                                    card->debugfs_card_root,
+                                                    &card->pop_time);
+        if (!card->debugfs_pop_time)
+                dev_warn(card->dev,
+                       "Failed to create pop time debugfs file\n");
+}
+
+static void soc_cleanup_card_debugfs(struct snd_soc_card *card)
+{
+        debugfs_remove_recursive(card->debugfs_card_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)
 {
 }
+
+static inline void soc_init_card_debugfs(struct snd_soc_card *card)
+{
+}
+
+static inline void soc_cleanup_card_debugfs(struct snd_soc_card *card)
+{
+}
 #endif
 
 #ifdef CONFIG_SND_SOC_AC97_BUS
 /* unregister ac97 codec */
 static int soc_ac97_dev_unregister(struct snd_soc_codec *codec)
 {
         if (codec->ac97->dev.bus)
                 device_unregister(&codec->ac97->dev);
         return 0;
 }
@@ skipping 94 matching lines @@
         }
 
         if (rtd->dai_link->ops && rtd->dai_link->ops->startup) {
                 ret = rtd->dai_link->ops->startup(substream);
                 if (ret < 0) {
                         printk(KERN_ERR "asoc: %s startup failed\n", rtd->dai_link->name);
                         goto machine_err;
                 }
         }
 
-        /* Check that the codec and cpu DAI's are compatible */
+        /* Check that the codec and cpu DAIs are compatible */
         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
                 runtime->hw.rate_min =
                         max(codec_dai_drv->playback.rate_min,
                             cpu_dai_drv->playback.rate_min);
                 runtime->hw.rate_max =
                         min(codec_dai_drv->playback.rate_max,
                             cpu_dai_drv->playback.rate_max);
                 runtime->hw.channels_min =
                         max(codec_dai_drv->playback.channels_min,
                                 cpu_dai_drv->playback.channels_min);
@@ skipping 328 matching lines @@
 
 codec_err:
         if (rtd->dai_link->ops && rtd->dai_link->ops->hw_free)
                 rtd->dai_link->ops->hw_free(substream);
 
         mutex_unlock(&pcm_mutex);
         return ret;
 }
 
 /*
- * Free's resources allocated by hw_params, can be called multiple times
+ * Frees resources allocated by hw_params, can be called multiple times
  */
 static int soc_pcm_hw_free(struct snd_pcm_substream *substream)
 {
         struct snd_soc_pcm_runtime *rtd = substream->private_data;
         struct snd_soc_platform *platform = rtd->platform;
         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
         struct snd_soc_dai *codec_dai = rtd->codec_dai;
         struct snd_soc_codec *codec = rtd->codec;
 
         mutex_lock(&pcm_mutex);
 
         /* apply codec digital mute */
         if (!codec->active)
                 snd_soc_dai_digital_mute(codec_dai, 1);
 
         /* free any machine hw params */
         if (rtd->dai_link->ops && rtd->dai_link->ops->hw_free)
                 rtd->dai_link->ops->hw_free(substream);
 
         /* free any DMA resources */
         if (platform->driver->ops->hw_free)
                 platform->driver->ops->hw_free(substream);
 
-        /* now free hw params for the DAI's  */
+        /* now free hw params for the DAIs  */
         if (codec_dai->driver->ops->hw_free)
                 codec_dai->driver->ops->hw_free(substream, codec_dai);
 
         if (cpu_dai->driver->ops->hw_free)
                 cpu_dai->driver->ops->hw_free(substream, cpu_dai);
 
         mutex_unlock(&pcm_mutex);
         return 0;
 }
 
@@ skipping 61 matching lines @@
 static struct snd_pcm_ops soc_pcm_ops = {
         .open           = soc_pcm_open,
         .close          = soc_codec_close,
         .hw_params      = soc_pcm_hw_params,
         .hw_free        = soc_pcm_hw_free,
         .prepare        = soc_pcm_prepare,
         .trigger        = soc_pcm_trigger,
         .pointer        = soc_pcm_pointer,
 };
 
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
 /* powers down audio subsystem for suspend */
-static int soc_suspend(struct device *dev)
+int snd_soc_suspend(struct device *dev)
 {
-        struct platform_device *pdev = to_platform_device(dev);
-        struct snd_soc_card *card = platform_get_drvdata(pdev);
+        struct snd_soc_card *card = dev_get_drvdata(dev);
+        struct snd_soc_codec *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 (list_empty(&card->codec_dev_list))
                 return 0;
 
         /* Due to the resume being scheduled into a workqueue we could
         * suspend before that's finished - wait for it to complete.
          */
         snd_power_lock(card->snd_card);
         snd_power_wait(card->snd_card, SNDRV_CTL_POWER_D0);
         snd_power_unlock(card->snd_card);
 
         /* we're going to block userspace touching us until resume completes */
         snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D3hot);
 
-        /* mute any active DAC's */
+        /* mute any active DACs */
         for (i = 0; i < card->num_rtd; i++) {
                 struct snd_soc_dai *dai = card->rtd[i].codec_dai;
                 struct snd_soc_dai_driver *drv = dai->driver;
 
                 if (card->rtd[i].dai_link->ignore_suspend)
                         continue;
 
                 if (drv->ops->digital_mute && dai->playback_active)
                         drv->ops->digital_mute(dai, 1);
         }
 
         /* suspend all pcms */
         for (i = 0; i < card->num_rtd; i++) {
                 if (card->rtd[i].dai_link->ignore_suspend)
                         continue;
 
                 snd_pcm_suspend_all(card->rtd[i].pcm);
         }
 
         if (card->suspend_pre)
-                card->suspend_pre(pdev, PMSG_SUSPEND);
+                card->suspend_pre(card);
 
         for (i = 0; i < card->num_rtd; i++) {
                 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
                 struct snd_soc_platform *platform = card->rtd[i].platform;
 
                 if (card->rtd[i].dai_link->ignore_suspend)
                         continue;
 
                 if (cpu_dai->driver->suspend && !cpu_dai->driver->ac97_control)
                         cpu_dai->driver->suspend(cpu_dai);
                 if (platform->driver->suspend && !platform->suspended) {
                         platform->driver->suspend(cpu_dai);
                         platform->suspended = 1;
                 }
         }
 
         /* close any waiting streams and save state */
         for (i = 0; i < card->num_rtd; i++) {
-                run_delayed_work(&card->rtd[i].delayed_work);
-                card->rtd[i].codec->suspend_bias_level = card->rtd[i].codec->bias_level;
+                flush_delayed_work_sync(&card->rtd[i].delayed_work);
+                card->rtd[i].codec->dapm.suspend_bias_level = card->rtd[i].codec->dapm.bias_level;
         }
 
         for (i = 0; i < card->num_rtd; i++) {
                 struct snd_soc_dai_driver *driver = card->rtd[i].codec_dai->driver;
 
                 if (card->rtd[i].dai_link->ignore_suspend)
                         continue;
 
                 if (driver->playback.stream_name != NULL)
                         snd_soc_dapm_stream_event(&card->rtd[i], driver->playback.stream_name,
                                 SND_SOC_DAPM_STREAM_SUSPEND);
 
                 if (driver->capture.stream_name != NULL)
                         snd_soc_dapm_stream_event(&card->rtd[i], driver->capture.stream_name,
                                 SND_SOC_DAPM_STREAM_SUSPEND);
         }
 
         /* suspend all CODECs */
-        for (i = 0; i < card->num_rtd; i++) {
-                struct snd_soc_codec *codec = card->rtd[i].codec;
+        list_for_each_entry(codec, &card->codec_dev_list, card_list) {
                 /* If there are paths active then the CODEC will be held with
                  * bias _ON and should not be suspended. */
                 if (!codec->suspended && codec->driver->suspend) {
-                        switch (codec->bias_level) {
+                        switch (codec->dapm.bias_level) {
                         case SND_SOC_BIAS_STANDBY:
                         case SND_SOC_BIAS_OFF:
                                 codec->driver->suspend(codec, PMSG_SUSPEND);
                                 codec->suspended = 1;
                                 break;
                         default:
                                 dev_dbg(codec->dev, "CODEC is on over suspend\n");
                                 break;
                         }
                 }
         }
 
         for (i = 0; i < card->num_rtd; i++) {
                 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
 
                 if (card->rtd[i].dai_link->ignore_suspend)
                         continue;
 
                 if (cpu_dai->driver->suspend && cpu_dai->driver->ac97_control)
                         cpu_dai->driver->suspend(cpu_dai);
         }
 
         if (card->suspend_post)
-                card->suspend_post(pdev, PMSG_SUSPEND);
+                card->suspend_post(card);
 
         return 0;
 }
+EXPORT_SYMBOL_GPL(snd_soc_suspend);
 
 /* deferred resume work, so resume can complete before we finished
  * setting our codec back up, which can be very slow on I2C
  */
 static void soc_resume_deferred(struct work_struct *work)
 {
         struct snd_soc_card *card =
                         container_of(work, struct snd_soc_card, deferred_resume_work);
-        struct platform_device *pdev = to_platform_device(card->dev);
+        struct snd_soc_codec *codec;
         int i;
 
         /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
          * so userspace apps are blocked from touching us
          */
 
         dev_dbg(card->dev, "starting resume work\n");
 
         /* Bring us up into D2 so that DAPM starts enabling things */
         snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D2);
 
         if (card->resume_pre)
-                card->resume_pre(pdev);
+                card->resume_pre(card);
 
         /* resume AC97 DAIs */
         for (i = 0; i < card->num_rtd; i++) {
                 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
 
                 if (card->rtd[i].dai_link->ignore_suspend)
                         continue;
 
                 if (cpu_dai->driver->resume && cpu_dai->driver->ac97_control)
                         cpu_dai->driver->resume(cpu_dai);
         }
 
-        for (i = 0; i < card->num_rtd; i++) {
-                struct snd_soc_codec *codec = card->rtd[i].codec;
+        list_for_each_entry(codec, &card->codec_dev_list, card_list) {
                 /* 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->driver->resume && codec->suspended) {
-                        switch (codec->bias_level) {
+                        switch (codec->dapm.bias_level) {
                         case SND_SOC_BIAS_STANDBY:
                         case SND_SOC_BIAS_OFF:
                                 codec->driver->resume(codec);
                                 codec->suspended = 0;
                                 break;
                         default:
                                 dev_dbg(codec->dev, "CODEC was on over suspend\n");
                                 break;
                         }
                 }
@@ skipping 35 matching lines @@
 
                 if (cpu_dai->driver->resume && !cpu_dai->driver->ac97_control)
                         cpu_dai->driver->resume(cpu_dai);
                 if (platform->driver->resume && platform->suspended) {
                         platform->driver->resume(cpu_dai);
                         platform->suspended = 0;
                 }
         }
 
         if (card->resume_post)
-                card->resume_post(pdev);
+                card->resume_post(card);
 
         dev_dbg(card->dev, "resume work completed\n");
 
         /* userspace can access us now we are back as we were before */
         snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D0);
 }
 
 /* powers up audio subsystem after a suspend */
-static int soc_resume(struct device *dev)
+int snd_soc_resume(struct device *dev)
 {
-        struct platform_device *pdev = to_platform_device(dev);
-        struct snd_soc_card *card = platform_get_drvdata(pdev);
+        struct snd_soc_card *card = dev_get_drvdata(dev);
         int i;
 
         /* 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.
          */
         for (i = 0; i < card->num_rtd; i++) {
                 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
                 if (cpu_dai->driver->ac97_control) {
                         dev_dbg(dev, "Resuming AC97 immediately\n");
                         soc_resume_deferred(&card->deferred_resume_work);
                 } else {
                         dev_dbg(dev, "Scheduling resume work\n");
                         if (!schedule_work(&card->deferred_resume_work))
                                 dev_err(dev, "resume work item may be lost\n");
                 }
         }
 
         return 0;
 }
+EXPORT_SYMBOL_GPL(snd_soc_resume);
 #else
-#define soc_suspend     NULL
-#define soc_resume      NULL
+#define snd_soc_suspend NULL
+#define snd_soc_resume NULL
 #endif
 
 static struct snd_soc_dai_ops null_dai_ops = {
 };
 
 static int soc_bind_dai_link(struct snd_soc_card *card, int num)
 {
         struct snd_soc_dai_link *dai_link = &card->dai_link[num];
         struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
         struct snd_soc_codec *codec;
@@ skipping 26 matching lines @@
         /* do we already have the CODEC for this link ? */
         if (rtd->codec) {
                 goto find_platform;
         }
 
         /* no, then find CODEC from registered CODECs*/
         list_for_each_entry(codec, &codec_list, list) {
                 if (!strcmp(codec->name, dai_link->codec_name)) {
                         rtd->codec = codec;
 
-                        if (!try_module_get(codec->dev->driver->owner))
-                                return -ENODEV;
-
                         /* CODEC found, so find CODEC DAI from registered DAIs from this CODEC*/
                         list_for_each_entry(codec_dai, &dai_list, list) {
                                 if (codec->dev == codec_dai->dev &&
                                                 !strcmp(codec_dai->name, dai_link->codec_dai_name)) {
                                         rtd->codec_dai = codec_dai;
                                         goto find_platform;
                                 }
                         }
                         dev_dbg(card->dev, "CODEC DAI %s not registered\n",
                                         dai_link->codec_dai_name);
 
                         goto find_platform;
                 }
         }
         dev_dbg(card->dev, "CODEC %s not registered\n",
                         dai_link->codec_name);
 
 find_platform:
         /* do we already have the CODEC DAI for this link ? */
         if (rtd->platform) {
                 goto out;
         }
         /* no, then find CPU DAI from registered DAIs*/
         list_for_each_entry(platform, &platform_list, list) {
                 if (!strcmp(platform->name, dai_link->platform_name)) {
-
-                        if (!try_module_get(platform->dev->driver->owner))
-                                return -ENODEV;
-
                         rtd->platform = platform;
                         goto out;
                 }
         }
 
         dev_dbg(card->dev, "platform %s not registered\n",
                         dai_link->platform_name);
         return 0;
 
 out:
         /* mark rtd as complete if we found all 4 of our client devices */
         if (rtd->codec && rtd->codec_dai && rtd->platform && rtd->cpu_dai) {
                 rtd->complete = 1;
                 card->num_rtd++;
         }
         return 1;
 }
 
+static void soc_remove_codec(struct snd_soc_codec *codec)
+{
+        int err;
+
+        if (codec->driver->remove) {
+                err = codec->driver->remove(codec);
+                if (err < 0)
+                        dev_err(codec->dev,
+                                "asoc: failed to remove %s: %d\n",
+                                codec->name, err);
+        }
+
+        /* Make sure all DAPM widgets are freed */
+        snd_soc_dapm_free(&codec->dapm);
+
+        soc_cleanup_codec_debugfs(codec);
+        codec->probed = 0;
+        list_del(&codec->card_list);
+        module_put(codec->dev->driver->owner);
+}
+
 static void soc_remove_dai_link(struct snd_soc_card *card, int num)
 {
         struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
         struct snd_soc_codec *codec = rtd->codec;
         struct snd_soc_platform *platform = rtd->platform;
         struct snd_soc_dai *codec_dai = rtd->codec_dai, *cpu_dai = rtd->cpu_dai;
         int err;
 
         /* unregister the rtd device */
         if (rtd->dev_registered) {
                 device_remove_file(&rtd->dev, &dev_attr_pmdown_time);
+                device_remove_file(&rtd->dev, &dev_attr_codec_reg);
                 device_unregister(&rtd->dev);
                 rtd->dev_registered = 0;
         }
 
         /* remove the CODEC DAI */
         if (codec_dai && codec_dai->probed) {
                 if (codec_dai->driver->remove) {
                         err = codec_dai->driver->remove(codec_dai);
                         if (err < 0)
                                 printk(KERN_ERR "asoc: failed to remove %s\n", codec_dai->name);
                 }
                 codec_dai->probed = 0;
                 list_del(&codec_dai->card_list);
         }
 
         /* remove the platform */
         if (platform && platform->probed) {
                 if (platform->driver->remove) {
                         err = platform->driver->remove(platform);
                         if (err < 0)
                                 printk(KERN_ERR "asoc: failed to remove %s\n", platform->name);
                 }
                 platform->probed = 0;
                 list_del(&platform->card_list);
                 module_put(platform->dev->driver->owner);
         }
 
         /* remove the CODEC */
-        if (codec && codec->probed) {
-                if (codec->driver->remove) {
-                        err = codec->driver->remove(codec);
-                        if (err < 0)
-                                printk(KERN_ERR "asoc: failed to remove %s\n", codec->name);
-                }
-
-                /* Make sure all DAPM widgets are freed */
-                snd_soc_dapm_free(codec);
-
-                soc_cleanup_codec_debugfs(codec);
-                device_remove_file(&rtd->dev, &dev_attr_codec_reg);
-                codec->probed = 0;
-                list_del(&codec->card_list);
-                module_put(codec->dev->driver->owner);
-        }
+        if (codec && codec->probed)
+                soc_remove_codec(codec);
 
         /* remove the cpu_dai */
         if (cpu_dai && cpu_dai->probed) {
                 if (cpu_dai->driver->remove) {
                         err = cpu_dai->driver->remove(cpu_dai);
                         if (err < 0)
                                 printk(KERN_ERR "asoc: failed to remove %s\n", cpu_dai->name);
                 }
                 cpu_dai->probed = 0;
                 list_del(&cpu_dai->card_list);
                 module_put(cpu_dai->dev->driver->owner);
         }
 }
 
+static void soc_set_name_prefix(struct snd_soc_card *card,
+                                struct snd_soc_codec *codec)
+{
+        int i;
+
+        if (card->codec_conf == NULL)
+                return;
+
+        for (i = 0; i < card->num_configs; i++) {
+                struct snd_soc_codec_conf *map = &card->codec_conf[i];
+                if (map->dev_name && !strcmp(codec->name, map->dev_name)) {
+                        codec->name_prefix = map->name_prefix;
+                        break;
+                }
+        }
+}
+
+static int soc_probe_codec(struct snd_soc_card *card,
+                           struct snd_soc_codec *codec)
+{
+        int ret = 0;
+
+        codec->card = card;
+        codec->dapm.card = card;
+        soc_set_name_prefix(card, codec);
+
+        if (!try_module_get(codec->dev->driver->owner))
+                return -ENODEV;
+
+        if (codec->driver->probe) {
+                ret = codec->driver->probe(codec);
+                if (ret < 0) {
+                        dev_err(codec->dev,
+                                "asoc: failed to probe CODEC %s: %d\n",
+                                codec->name, ret);
+                        goto err_probe;
+                }
+        }
+
+        soc_init_codec_debugfs(codec);
+
+        /* mark codec as probed and add to card codec list */
+        codec->probed = 1;
+        list_add(&codec->card_list, &card->codec_dev_list);
+        list_add(&codec->dapm.list, &card->dapm_list);
+
+        return 0;
+
+err_probe:
+        module_put(codec->dev->driver->owner);
+
+        return ret;
+}
+
 static void rtd_release(struct device *dev) {}
 
+static int soc_post_component_init(struct snd_soc_card *card,
+                                   struct snd_soc_codec *codec,
+                                   int num, int dailess)
+{
+        struct snd_soc_dai_link *dai_link = NULL;
+        struct snd_soc_aux_dev *aux_dev = NULL;
+        struct snd_soc_pcm_runtime *rtd;
+        const char *temp, *name;
+        int ret = 0;
+
+        if (!dailess) {
+                dai_link = &card->dai_link[num];
+                rtd = &card->rtd[num];
+                name = dai_link->name;
+        } else {
+                aux_dev = &card->aux_dev[num];
+                rtd = &card->rtd_aux[num];
+                name = aux_dev->name;
+        }
+        rtd->card = card;
+
+        /* machine controls, routes and widgets are not prefixed */
+        temp = codec->name_prefix;
+        codec->name_prefix = NULL;
+
+        /* do machine specific initialization */
+        if (!dailess && dai_link->init)
+                ret = dai_link->init(rtd);
+        else if (dailess && aux_dev->init)
+                ret = aux_dev->init(&codec->dapm);
+        if (ret < 0) {
+                dev_err(card->dev, "asoc: failed to init %s: %d\n", name, ret);
+                return ret;
+        }
+        codec->name_prefix = temp;
+
+        /* Make sure all DAPM widgets are instantiated */
+        snd_soc_dapm_new_widgets(&codec->dapm);
+
+        /* register the rtd device */
+        rtd->codec = codec;
+        rtd->dev.parent = card->dev;
+        rtd->dev.release = rtd_release;
+        rtd->dev.init_name = name;
+        ret = device_register(&rtd->dev);
+        if (ret < 0) {
+                dev_err(card->dev,
+                        "asoc: failed to register runtime device: %d\n", ret);
+                return ret;
+        }
+        rtd->dev_registered = 1;
+
+        /* add DAPM sysfs entries for this codec */
+        ret = snd_soc_dapm_sys_add(&rtd->dev);
+        if (ret < 0)
+                dev_err(codec->dev,
+                        "asoc: failed to add codec dapm sysfs entries: %d\n",
+                        ret);
+
+        /* add codec sysfs entries */
+        ret = device_create_file(&rtd->dev, &dev_attr_codec_reg);
+        if (ret < 0)
+                dev_err(codec->dev,
+                        "asoc: failed to add codec sysfs files: %d\n", ret);
+
+        return 0;
+}
+
 static int soc_probe_dai_link(struct snd_soc_card *card, int num)
 {
         struct snd_soc_dai_link *dai_link = &card->dai_link[num];
         struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
         struct snd_soc_codec *codec = rtd->codec;
         struct snd_soc_platform *platform = rtd->platform;
         struct snd_soc_dai *codec_dai = rtd->codec_dai, *cpu_dai = rtd->cpu_dai;
         int ret;
 
         dev_dbg(card->dev, "probe %s dai link %d\n", card->name, num);
 
         /* config components */
         codec_dai->codec = codec;
-        codec->card = card;
         cpu_dai->platform = platform;
-        rtd->card = card;
-        rtd->dev.parent = card->dev;
         codec_dai->card = card;
         cpu_dai->card = card;
 
         /* set default power off timeout */
         rtd->pmdown_time = pmdown_time;
 
         /* probe the cpu_dai */
         if (!cpu_dai->probed) {
                 if (cpu_dai->driver->probe) {
                         ret = cpu_dai->driver->probe(cpu_dai);
                         if (ret < 0) {
                                 printk(KERN_ERR "asoc: failed to probe CPU DAI %s\n",
                                                 cpu_dai->name);
                                 return ret;
                         }
                 }
                 cpu_dai->probed = 1;
                 /* mark cpu_dai as probed and add to card cpu_dai list */
                 list_add(&cpu_dai->card_list, &card->dai_dev_list);
         }
 
         /* probe the CODEC */
         if (!codec->probed) {
-                if (codec->driver->probe) {
-                        ret = codec->driver->probe(codec);
-                        if (ret < 0) {
-                                printk(KERN_ERR "asoc: failed to probe CODEC %s\n",
-                                                codec->name);
-                                return ret;
-                        }
-                }
-
-                soc_init_codec_debugfs(codec);
-
-                /* mark codec as probed and add to card codec list */
-                codec->probed = 1;
-                list_add(&codec->card_list, &card->codec_dev_list);
+                ret = soc_probe_codec(card, codec);
+                if (ret < 0)
+                        return ret;
         }
 
         /* probe the platform */
         if (!platform->probed) {
+                if (!try_module_get(platform->dev->driver->owner))
+                        return -ENODEV;
+
                 if (platform->driver->probe) {
                         ret = platform->driver->probe(platform);
                         if (ret < 0) {
                                 printk(KERN_ERR "asoc: failed to probe platform %s\n",
                                                 platform->name);
+                                module_put(platform->dev->driver->owner);
                                 return ret;
                         }
                 }
                 /* mark platform as probed and add to card platform list */
                 platform->probed = 1;
                 list_add(&platform->card_list, &card->platform_dev_list);
         }
 
         /* probe the CODEC DAI */
         if (!codec_dai->probed) {
                 if (codec_dai->driver->probe) {
                         ret = codec_dai->driver->probe(codec_dai);
                         if (ret < 0) {
                                 printk(KERN_ERR "asoc: failed to probe CODEC DAI %s\n",
                                                 codec_dai->name);
                                 return ret;
                         }
                 }
 
                 /* mark cpu_dai as probed and add to card cpu_dai list */
                 codec_dai->probed = 1;
                 list_add(&codec_dai->card_list, &card->dai_dev_list);
         }
 
         /* DAPM dai link stream work */
         INIT_DELAYED_WORK(&rtd->delayed_work, close_delayed_work);
 
-        /* now that all clients have probed, initialise the DAI link */
-        if (dai_link->init) {
-                ret = dai_link->init(rtd);
-                if (ret < 0) {
-                        printk(KERN_ERR "asoc: failed to init %s\n", dai_link->stream_name);
-                        return ret;
-                }
-        }
+        ret = soc_post_component_init(card, codec, num, 0);
+        if (ret)
+                return ret;
 
-        /* Make sure all DAPM widgets are instantiated */
-        snd_soc_dapm_new_widgets(codec);
-        snd_soc_dapm_sync(codec);
-
-        /* register the rtd device */
-        rtd->dev.release = rtd_release;
-        rtd->dev.init_name = dai_link->name;
-        ret = device_register(&rtd->dev);
-        if (ret < 0) {
-                printk(KERN_ERR "asoc: failed to register DAI runtime device %d\n", ret);
-                return ret;
-        }
-
-        rtd->dev_registered = 1;
         ret = device_create_file(&rtd->dev, &dev_attr_pmdown_time);
         if (ret < 0)
                 printk(KERN_WARNING "asoc: failed to add pmdown_time sysfs\n");
 
-        /* add DAPM sysfs entries for this codec */
-        ret = snd_soc_dapm_sys_add(&rtd->dev);
-        if (ret < 0)
-                printk(KERN_WARNING "asoc: failed to add codec dapm sysfs entries\n");
-
-        /* add codec sysfs entries */
-        ret = device_create_file(&rtd->dev, &dev_attr_codec_reg);
-        if (ret < 0)
-                printk(KERN_WARNING "asoc: failed to add codec sysfs files\n");
-
         /* create the pcm */
         ret = soc_new_pcm(rtd, num);
         if (ret < 0) {
                 printk(KERN_ERR "asoc: can't create pcm %s\n", dai_link->stream_name);
                 return ret;
         }
 
         /* add platform data for AC97 devices */
         if (rtd->codec_dai->driver->ac97_control)
                 snd_ac97_dev_add_pdata(codec->ac97, rtd->cpu_dai->ac97_pdata);
@@ skipping 34 matching lines @@
 
 static void soc_unregister_ac97_dai_link(struct snd_soc_codec *codec)
 {
         if (codec->ac97_registered) {
                 soc_ac97_dev_unregister(codec);
                 codec->ac97_registered = 0;
         }
 }
 #endif
 
+static int soc_probe_aux_dev(struct snd_soc_card *card, int num)
+{
+        struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
+        struct snd_soc_codec *codec;
+        int ret = -ENODEV;
+
+        /* find CODEC from registered CODECs*/
+        list_for_each_entry(codec, &codec_list, list) {
+                if (!strcmp(codec->name, aux_dev->codec_name)) {
+                        if (codec->probed) {
+                                dev_err(codec->dev,
+                                        "asoc: codec already probed");
+                                ret = -EBUSY;
+                                goto out;
+                        }
+                        goto found;
+                }
+        }
+        /* codec not found */
+        dev_err(card->dev, "asoc: codec %s not found", aux_dev->codec_name);
+        goto out;
+
+found:
+        ret = soc_probe_codec(card, codec);
+        if (ret < 0)
+                return ret;
+
+        ret = soc_post_component_init(card, codec, num, 1);
+
+out:
+        return ret;
+}
+
+static void soc_remove_aux_dev(struct snd_soc_card *card, int num)
+{
+        struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num];
+        struct snd_soc_codec *codec = rtd->codec;
+
+        /* unregister the rtd device */
+        if (rtd->dev_registered) {
+                device_remove_file(&rtd->dev, &dev_attr_codec_reg);
+                device_unregister(&rtd->dev);
+                rtd->dev_registered = 0;
+        }
+
+        if (codec && codec->probed)
+                soc_remove_codec(codec);
+}
+
+static int snd_soc_init_codec_cache(struct snd_soc_codec *codec,
+                                    enum snd_soc_compress_type compress_type)
+{
+        int ret;
+
+        if (codec->cache_init)
+                return 0;
+
+        /* override the compress_type if necessary */
+        if (compress_type && codec->compress_type != compress_type)
+                codec->compress_type = compress_type;
+        ret = snd_soc_cache_init(codec);
+        if (ret < 0) {
+                dev_err(codec->dev, "Failed to set cache compression type: %d\n",
+                        ret);
+                return ret;
+        }
+        codec->cache_init = 1;
+        return 0;
+}
+
 static void snd_soc_instantiate_card(struct snd_soc_card *card)
 {
-        struct platform_device *pdev = to_platform_device(card->dev);
+        struct snd_soc_codec *codec;
+        struct snd_soc_codec_conf *codec_conf;
+        enum snd_soc_compress_type compress_type;
         int ret, i;
 
         mutex_lock(&card->mutex);
 
         if (card->instantiated) {
                 mutex_unlock(&card->mutex);
                 return;
         }
 
         /* bind DAIs */
         for (i = 0; i < card->num_links; i++)
                 soc_bind_dai_link(card, i);
 
         /* bind completed ? */
         if (card->num_rtd != card->num_links) {
                 mutex_unlock(&card->mutex);
                 return;
         }
 
+        /* initialize the register cache for each available codec */
+        list_for_each_entry(codec, &codec_list, list) {
+                if (codec->cache_init)
+                        continue;
+                /* by default we don't override the compress_type */
+                compress_type = 0;
+                /* check to see if we need to override the compress_type */
+                for (i = 0; i < card->num_configs; ++i) {
+                        codec_conf = &card->codec_conf[i];
+                        if (!strcmp(codec->name, codec_conf->dev_name)) {
+                                compress_type = codec_conf->compress_type;
+                                if (compress_type && compress_type
+                                    != codec->compress_type)
+                                        break;
+                        }
+                }
+                ret = snd_soc_init_codec_cache(codec, compress_type);
+                if (ret < 0) {
+                        mutex_unlock(&card->mutex);
+                        return;
+                }
+        }
+
         /* card bind complete so register a sound card */
         ret = snd_card_create(SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
                         card->owner, 0, &card->snd_card);
         if (ret < 0) {
                 printk(KERN_ERR "asoc: can't create sound card for card %s\n",
                         card->name);
                 mutex_unlock(&card->mutex);
                 return;
         }
         card->snd_card->dev = card->dev;
 
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
         /* deferred resume work */
         INIT_WORK(&card->deferred_resume_work, soc_resume_deferred);
 #endif
 
         /* initialise the sound card only once */
         if (card->probe) {
-                ret = card->probe(pdev);
+                ret = card->probe(card);
                 if (ret < 0)
                         goto card_probe_error;
         }
 
         for (i = 0; i < card->num_links; i++) {
                 ret = soc_probe_dai_link(card, i);
                 if (ret < 0) {
                         pr_err("asoc: failed to instantiate card %s: %d\n",
                                card->name, ret);
                         goto probe_dai_err;
                 }
         }
 
+        for (i = 0; i < card->num_aux_devs; i++) {
+                ret = soc_probe_aux_dev(card, i);
+                if (ret < 0) {
+                        pr_err("asoc: failed to add auxiliary devices %s: %d\n",
+                               card->name, ret);
+                        goto probe_aux_dev_err;
+                }
+        }
+
         snprintf(card->snd_card->shortname, sizeof(card->snd_card->shortname),
                  "%s",  card->name);
         snprintf(card->snd_card->longname, sizeof(card->snd_card->longname),
                  "%s", card->name);
 
         ret = snd_card_register(card->snd_card);
         if (ret < 0) {
                 printk(KERN_ERR "asoc: failed to register soundcard for %s\n", card->name);
-                goto probe_dai_err;
+                goto probe_aux_dev_err;
         }
 
 #ifdef CONFIG_SND_SOC_AC97_BUS
         /* register any AC97 codecs */
         for (i = 0; i < card->num_rtd; i++) {
                 ret = soc_register_ac97_dai_link(&card->rtd[i]);
                 if (ret < 0) {
                         printk(KERN_ERR "asoc: failed to register AC97 %s\n", card->name);
                         while (--i >= 0)
-                                soc_unregister_ac97_dai_link(&card->rtd[i]);
-                        goto probe_dai_err;
+                                soc_unregister_ac97_dai_link(card->rtd[i].codec);
+                        goto probe_aux_dev_err;
                 }
         }
 #endif
 
         card->instantiated = 1;
         mutex_unlock(&card->mutex);
         return;
 
+probe_aux_dev_err:
+        for (i = 0; i < card->num_aux_devs; i++)
+                soc_remove_aux_dev(card, i);
+
 probe_dai_err:
         for (i = 0; i < card->num_links; i++)
                 soc_remove_dai_link(card, i);
 
 card_probe_error:
         if (card->remove)
-                card->remove(pdev);
+                card->remove(card);
 
         snd_card_free(card->snd_card);
 
         mutex_unlock(&card->mutex);
 }
 
 /*
  * Attempt to initialise any uninitialised 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)
 {
         struct snd_soc_card *card = platform_get_drvdata(pdev);
         int ret = 0;
 
+        /*
+         * no card, so machine driver should be registering card
+         * we should not be here in that case so ret error
+         */
+        if (!card)
+                return -EINVAL;
+
         /* Bodge while we unpick instantiation */
         card->dev = &pdev->dev;
-        INIT_LIST_HEAD(&card->dai_dev_list);
-        INIT_LIST_HEAD(&card->codec_dev_list);
-        INIT_LIST_HEAD(&card->platform_dev_list);
 
         ret = snd_soc_register_card(card);
         if (ret != 0) {
                 dev_err(&pdev->dev, "Failed to register card\n");
                 return ret;
         }
 
         return 0;
 }
 
+static int soc_cleanup_card_resources(struct snd_soc_card *card)
+{
+        int i;
+
+        /* make sure any delayed work runs */
+        for (i = 0; i < card->num_rtd; i++) {
+                struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
+                flush_delayed_work_sync(&rtd->delayed_work);
+        }
+
+        /* remove auxiliary devices */
+        for (i = 0; i < card->num_aux_devs; i++)
+                soc_remove_aux_dev(card, i);
+
+        /* remove and free each DAI */
+        for (i = 0; i < card->num_rtd; i++)
+                soc_remove_dai_link(card, i);
+
+        soc_cleanup_card_debugfs(card);
+
+        /* remove the card */
+        if (card->remove)
+                card->remove(card);
+
+        kfree(card->rtd);
+        snd_card_free(card->snd_card);
+        return 0;
+
+}
+
 /* removes a socdev */
 static int soc_remove(struct platform_device *pdev)
 {
         struct snd_soc_card *card = platform_get_drvdata(pdev);
-        int i;
 
-                if (card->instantiated) {
-
-                /* make sure any delayed work runs */
-                for (i = 0; i < card->num_rtd; i++) {
-                        struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
-                        run_delayed_work(&rtd->delayed_work);
-                }
-
-                /* remove and free each DAI */
-                for (i = 0; i < card->num_rtd; i++)
-                        soc_remove_dai_link(card, i);
-
-                /* remove the card */
-                if (card->remove)
-                        card->remove(pdev);
-
-                kfree(card->rtd);
-                snd_card_free(card->snd_card);
-        }
         snd_soc_unregister_card(card);
         return 0;
 }
 
-static int soc_poweroff(struct device *dev)
+int snd_soc_poweroff(struct device *dev)
 {
-        struct platform_device *pdev = to_platform_device(dev);
-        struct snd_soc_card *card = platform_get_drvdata(pdev);
+        struct snd_soc_card *card = dev_get_drvdata(dev);
         int i;
 
         if (!card->instantiated)
                 return 0;
 
         /* Flush out pmdown_time work - we actually do want to run it
          * now, we're shutting down so no imminent restart. */
         for (i = 0; i < card->num_rtd; i++) {
                 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
-                run_delayed_work(&rtd->delayed_work);
+                flush_delayed_work_sync(&rtd->delayed_work);
         }
 
         snd_soc_dapm_shutdown(card);
 
         return 0;
 }
+EXPORT_SYMBOL_GPL(snd_soc_poweroff);
 
-static const struct dev_pm_ops soc_pm_ops = {
-        .suspend = soc_suspend,
-        .resume = soc_resume,
-        .poweroff = soc_poweroff,
+const struct dev_pm_ops snd_soc_pm_ops = {
+        .suspend = snd_soc_suspend,
+        .resume = snd_soc_resume,
+        .poweroff = snd_soc_poweroff,
 };
 
 /* ASoC platform driver */
 static struct platform_driver soc_driver = {
         .driver         = {
                 .name           = "soc-audio",
                 .owner          = THIS_MODULE,
-                .pm             = &soc_pm_ops,
+                .pm             = &snd_soc_pm_ops,
         },
         .probe          = soc_probe,
         .remove         = soc_remove,
 };
 
 /* create a new pcm */
 static int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num)
 {
         struct snd_soc_codec *codec = rtd->codec;
         struct snd_soc_platform *platform = rtd->platform;
@@ skipping 49 matching lines @@
 }
 
 /**
  * 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)
+int snd_soc_codec_volatile_register(struct snd_soc_codec *codec,
+                                    unsigned int reg)
 {
-        if (codec->driver->volatile_register)
-                return codec->driver->volatile_register(reg);
+        if (codec->volatile_register)
+                return codec->volatile_register(codec, reg);
         else
                 return 0;
 }
 EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register);
 
 /**
  * snd_soc_new_ac97_codec - initailise AC97 device
  * @codec: audio codec
  * @ops: AC97 bus operations
  * @num: AC97 codec number
@@ skipping 46 matching lines @@
         soc_unregister_ac97_dai_link(codec);
 #endif
         kfree(codec->ac97->bus);
         kfree(codec->ac97);
         codec->ac97 = NULL;
         codec->ac97_created = 0;
         mutex_unlock(&codec->mutex);
 }
 EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec);
 
+unsigned int snd_soc_read(struct snd_soc_codec *codec, unsigned int reg)
+{
+        unsigned int ret;
+
+        ret = codec->read(codec, reg);
+        dev_dbg(codec->dev, "read %x => %x\n", reg, ret);
+        trace_snd_soc_reg_read(codec, reg, ret);
+
+        return ret;
+}
+EXPORT_SYMBOL_GPL(snd_soc_read);
+
+unsigned int snd_soc_write(struct snd_soc_codec *codec,
+                           unsigned int reg, unsigned int val)
+{
+        dev_dbg(codec->dev, "write %x = %x\n", reg, val);
+        trace_snd_soc_reg_write(codec, reg, val);
+        return codec->write(codec, reg, val);
+}
+EXPORT_SYMBOL_GPL(snd_soc_write);
+
 /**
  * snd_soc_update_bits - update codec register bits
  * @codec: audio codec
  * @reg: codec register
  * @mask: register mask
  * @value: new value
  *
  * Writes new register value.
  *
- * Returns 1 for change else 0.
+ * Returns 1 for change, 0 for no change, or negative error code.
  */
 int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg,
                                 unsigned int mask, unsigned int value)
 {
         int change;
         unsigned int old, new;
+        int ret;
 
-        old = snd_soc_read(codec, reg);
+        ret = snd_soc_read(codec, reg);
+        if (ret < 0)
+                return ret;
+
+        old = ret;
         new = (old & ~mask) | value;
         change = old != new;
-        if (change)
-                snd_soc_write(codec, reg, new);
+        if (change) {
+                ret = snd_soc_write(codec, reg, new);
+                if (ret < 0)
+                        return ret;
+        }
 
         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
@@ skipping 98 matching lines @@
  * @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->snd_card;
+        char prefixed_name[44], *name;
         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 (codec->name_prefix) {
+                        snprintf(prefixed_name, sizeof(prefixed_name), "%s %s",
+                                 codec->name_prefix, control->name);
+                        name = prefixed_name;
+                } else {
+                        name = control->name;
+                }
+                err = snd_ctl_add(card, snd_soc_cnew(control, codec, name));
                 if (err < 0) {
                         dev_err(codec->dev, "%s: Failed to add %s: %d\n",
-                                codec->name, control->name, err);
+                                codec->name, name, err);
                         return err;
                 }
         }
 
         return 0;
 }
 EXPORT_SYMBOL_GPL(snd_soc_add_controls);
 
 /**
  * snd_soc_info_enum_double - enumerated double mixer info callback
@@ skipping 805 matching lines @@
         else
                 return -EINVAL;
 }
 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute);
 
 /**
  * snd_soc_register_card - Register a card with the ASoC core
  *
  * @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)
+int snd_soc_register_card(struct snd_soc_card *card)
 {
         int i;
 
         if (!card->name || !card->dev)
                 return -EINVAL;
 
-        card->rtd = kzalloc(sizeof(struct snd_soc_pcm_runtime) * card->num_links,
-                        GFP_KERNEL);
+        snd_soc_initialize_card_lists(card);
+
+        soc_init_card_debugfs(card);
+
+        card->rtd = kzalloc(sizeof(struct snd_soc_pcm_runtime) *
+                            (card->num_links + card->num_aux_devs),
+                            GFP_KERNEL);
         if (card->rtd == NULL)
                 return -ENOMEM;
+        card->rtd_aux = &card->rtd[card->num_links];
 
         for (i = 0; i < card->num_links; i++)
                 card->rtd[i].dai_link = &card->dai_link[i];
 
         INIT_LIST_HEAD(&card->list);
         card->instantiated = 0;
         mutex_init(&card->mutex);
 
         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;
 }
+EXPORT_SYMBOL_GPL(snd_soc_register_card);
 
 /**
  * snd_soc_unregister_card - Unregister a card with the ASoC core
  *
  * @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)
+int snd_soc_unregister_card(struct snd_soc_card *card)
 {
+        if (card->instantiated)
+                soc_cleanup_card_resources(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;
 }
+EXPORT_SYMBOL_GPL(snd_soc_unregister_card);
 
 /*
  * Simplify DAI link configuration by removing ".-1" from device names
  * and sanitizing names.
  */
-static inline char *fmt_single_name(struct device *dev, int *id)
+static char *fmt_single_name(struct device *dev, int *id)
 {
         char *found, name[NAME_SIZE];
         int id1, id2;
 
         if (dev_name(dev) == NULL)
                 return NULL;
 
-        strncpy(name, dev_name(dev), NAME_SIZE);
+        strlcpy(name, dev_name(dev), NAME_SIZE);
 
         /* are we a "%s.%d" name (platform and SPI components) */
         found = strstr(name, dev->driver->name);
         if (found) {
                 /* get ID */
                 if (sscanf(&found[strlen(dev->driver->name)], ".%d", id) == 1) {
 
                         /* discard ID from name if ID == -1 */
                         if (*id == -1)
                                 found[strlen(dev->driver->name)] = '\0';
                 }
 
         } else {
                 /* I2C component devices are named "bus-addr"  */
                 if (sscanf(name, "%x-%x", &id1, &id2) == 2) {
                         char tmp[NAME_SIZE];
 
                         /* create unique ID number from I2C addr and bus */
                         *id = ((id1 & 0xffff) << 16) + id2;
 
                         /* sanitize component name for DAI link creation */
                         snprintf(tmp, NAME_SIZE, "%s.%s", dev->driver->name, name);
-                        strncpy(name, tmp, NAME_SIZE);
+                        strlcpy(name, tmp, NAME_SIZE);
                 } else
                         *id = 0;
         }
 
         return kstrdup(name, GFP_KERNEL);
 }
 
 /*
  * Simplify DAI link naming for single devices with multiple DAIs by removing
  * any ".-1" and using the DAI name (instead of device name).
@@ skipping 244 matching lines @@
                 if (stream->formats & codec_format_map[i])
                         stream->formats |= codec_format_map[i];
 }
 
 /**
  * snd_soc_register_codec - Register a codec with the ASoC core
  *
  * @codec: codec to register
  */
 int snd_soc_register_codec(struct device *dev,
-                struct snd_soc_codec_driver *codec_drv,
-                struct snd_soc_dai_driver *dai_drv, int num_dai)
+                           const struct snd_soc_codec_driver *codec_drv,
+                           struct snd_soc_dai_driver *dai_drv,
+                           int num_dai)
 {
+        size_t reg_size;
         struct snd_soc_codec *codec;
         int ret, i;
 
         dev_dbg(dev, "codec register %s\n", dev_name(dev));
 
         codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
         if (codec == NULL)
                 return -ENOMEM;
 
         /* create CODEC component name */
         codec->name = fmt_single_name(dev, &codec->id);
         if (codec->name == NULL) {
                 kfree(codec);
                 return -ENOMEM;
         }
 
+        if (codec_drv->compress_type)
+                codec->compress_type = codec_drv->compress_type;
+        else
+                codec->compress_type = SND_SOC_FLAT_COMPRESSION;
+
+        codec->write = codec_drv->write;
+        codec->read = codec_drv->read;
+        codec->volatile_register = codec_drv->volatile_register;
+        codec->readable_register = codec_drv->readable_register;
+        codec->dapm.bias_level = SND_SOC_BIAS_OFF;
+        codec->dapm.dev = dev;
+        codec->dapm.codec = codec;
+        codec->dapm.seq_notifier = codec_drv->seq_notifier;
+        codec->dev = dev;
+        codec->driver = codec_drv;
+        codec->num_dai = num_dai;
+        mutex_init(&codec->mutex);
+
         /* allocate CODEC register cache */
         if (codec_drv->reg_cache_size && codec_drv->reg_word_size) {
-
-                if (codec_drv->reg_cache_default)
-                        codec->reg_cache = kmemdup(codec_drv->reg_cache_default,
-                                codec_drv->reg_cache_size * codec_drv->reg_word_size, GFP_KERNEL);
-                else
-                        codec->reg_cache = kzalloc(codec_drv->reg_cache_size *
-                                codec_drv->reg_word_size, GFP_KERNEL);
-
-                if (codec->reg_cache == NULL) {
-                        kfree(codec->name);
-                        kfree(codec);
-                        return -ENOMEM;
+                reg_size = codec_drv->reg_cache_size * codec_drv->reg_word_size;
+                codec->reg_size = reg_size;
+                /* it is necessary to make a copy of the default register cache
+                 * because in the case of using a compression type that requires
+                 * the default register cache to be marked as __devinitconst the
+                 * kernel might have freed the array by the time we initialize
+                 * the cache.
+                 */
+                if (codec_drv->reg_cache_default) {
+                        codec->reg_def_copy = kmemdup(codec_drv->reg_cache_default,
+                                                      reg_size, GFP_KERNEL);
+                        if (!codec->reg_def_copy) {
+                                ret = -ENOMEM;
+                                goto fail;
+                        }
                 }
         }
 
-        codec->dev = dev;
-        codec->driver = codec_drv;
-        codec->bias_level = SND_SOC_BIAS_OFF;
-        codec->num_dai = num_dai;
-        mutex_init(&codec->mutex);
-        INIT_LIST_HEAD(&codec->dapm_widgets);
-        INIT_LIST_HEAD(&codec->dapm_paths);
+        if (codec_drv->reg_access_size && codec_drv->reg_access_default) {
+                if (!codec->volatile_register)
+                        codec->volatile_register = snd_soc_default_volatile_register;
+                if (!codec->readable_register)
+                        codec->readable_register = snd_soc_default_readable_register;
+        }
 
         for (i = 0; i < num_dai; i++) {
                 fixup_codec_formats(&dai_drv[i].playback);
                 fixup_codec_formats(&dai_drv[i].capture);
         }
 
         /* register any DAIs */
         if (num_dai) {
                 ret = snd_soc_register_dais(dev, dai_drv, num_dai);
                 if (ret < 0)
-                        goto error;
+                        goto fail;
         }
 
         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;
 
-error:
-        if (codec->reg_cache)
-                kfree(codec->reg_cache);
+fail:
+        kfree(codec->reg_def_copy);
+        codec->reg_def_copy = NULL;
         kfree(codec->name);
         kfree(codec);
         return ret;
 }
 EXPORT_SYMBOL_GPL(snd_soc_register_codec);
 
 /**
  * snd_soc_unregister_codec - Unregister a codec from the ASoC core
  *
  * @codec: codec to unregister
@@ skipping 13 matching lines @@
         if (codec->num_dai)
                 for (i = 0; i < codec->num_dai; i++)
                         snd_soc_unregister_dai(dev);
 
         mutex_lock(&client_mutex);
         list_del(&codec->list);
         mutex_unlock(&client_mutex);
 
         pr_debug("Unregistered codec '%s'\n", codec->name);
 
-        if (codec->reg_cache)
-                kfree(codec->reg_cache);
+        snd_soc_cache_exit(codec);
+        kfree(codec->reg_def_copy);
         kfree(codec->name);
         kfree(codec);
 }
 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec);
 
 static int __init snd_soc_init(void)
 {
 #ifdef CONFIG_DEBUG_FS
-        asoc_debugfs_root = debugfs_create_dir("asoc", NULL);
-        if (IS_ERR(asoc_debugfs_root) || !asoc_debugfs_root) {
+        snd_soc_debugfs_root = debugfs_create_dir("asoc", NULL);
+        if (IS_ERR(snd_soc_debugfs_root) || !snd_soc_debugfs_root) {
                 printk(KERN_WARNING
                        "ASoC: Failed to create debugfs directory\n");
-                asoc_debugfs_root = NULL;
+                snd_soc_debugfs_root = NULL;
         }
 
-        if (!debugfs_create_file("codecs", 0444, asoc_debugfs_root, NULL,
+        if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root, NULL,
                                  &codec_list_fops))
                 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
 
-        if (!debugfs_create_file("dais", 0444, asoc_debugfs_root, NULL,
+        if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root, NULL,
                                  &dai_list_fops))
                 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
 
-        if (!debugfs_create_file("platforms", 0444, asoc_debugfs_root, NULL,
+        if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root, NULL,
                                  &platform_list_fops))
                 pr_warn("ASoC: Failed to create platform list debugfs file\n");
 #endif
 
         return platform_driver_register(&soc_driver);
 }
 module_init(snd_soc_init);
 
 static void __exit snd_soc_exit(void)
 {
 #ifdef CONFIG_DEBUG_FS
-        debugfs_remove_recursive(asoc_debugfs_root);
+        debugfs_remove_recursive(snd_soc_debugfs_root);
 #endif
         platform_driver_unregister(&soc_driver);
 }
 module_exit(snd_soc_exit);
 
 /* Module information */
 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
 MODULE_DESCRIPTION("ALSA SoC Core");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS("platform:soc-audio");