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-rw-r--r--sound/soc/soc-core.c840
1 files changed, 624 insertions, 216 deletions
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 16c7453f4946..b098c0b4c584 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -26,6 +26,7 @@
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/bitops.h>
+#include <linux/debugfs.h>
#include <linux/platform_device.h>
#include <sound/core.h>
#include <sound/pcm.h>
@@ -34,18 +35,23 @@
#include <sound/soc-dapm.h>
#include <sound/initval.h>
-/* debug */
-#define SOC_DEBUG 0
-#if SOC_DEBUG
-#define dbg(format, arg...) printk(format, ## arg)
-#else
-#define dbg(format, arg...)
-#endif
-
static DEFINE_MUTEX(pcm_mutex);
static DEFINE_MUTEX(io_mutex);
static DECLARE_WAIT_QUEUE_HEAD(soc_pm_waitq);
+#ifdef CONFIG_DEBUG_FS
+static struct dentry *debugfs_root;
+#endif
+
+static DEFINE_MUTEX(client_mutex);
+static LIST_HEAD(card_list);
+static LIST_HEAD(dai_list);
+static LIST_HEAD(platform_list);
+static LIST_HEAD(codec_list);
+
+static int snd_soc_register_card(struct snd_soc_card *card);
+static int snd_soc_unregister_card(struct snd_soc_card *card);
+
/*
* This is a timeout to do a DAPM powerdown after a stream is closed().
* It can be used to eliminate pops between different playback streams, e.g.
@@ -107,20 +113,6 @@ static int soc_ac97_dev_register(struct snd_soc_codec *codec)
}
#endif
-static inline const char *get_dai_name(int type)
-{
- switch (type) {
- case SND_SOC_DAI_AC97_BUS:
- case SND_SOC_DAI_AC97:
- return "AC97";
- case SND_SOC_DAI_I2S:
- return "I2S";
- case SND_SOC_DAI_PCM:
- return "PCM";
- }
- return NULL;
-}
-
/*
* Called by ALSA when a PCM substream is opened, the runtime->hw record is
* then initialized and any private data can be allocated. This also calls
@@ -130,9 +122,10 @@ static int soc_pcm_open(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_device *socdev = rtd->socdev;
+ struct snd_soc_card *card = socdev->card;
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_soc_dai_link *machine = rtd->dai;
- struct snd_soc_platform *platform = socdev->platform;
+ struct snd_soc_platform *platform = card->platform;
struct snd_soc_dai *cpu_dai = machine->cpu_dai;
struct snd_soc_dai *codec_dai = machine->codec_dai;
int ret = 0;
@@ -141,7 +134,7 @@ static int soc_pcm_open(struct snd_pcm_substream *substream)
/* startup the audio subsystem */
if (cpu_dai->ops.startup) {
- ret = cpu_dai->ops.startup(substream);
+ ret = cpu_dai->ops.startup(substream, cpu_dai);
if (ret < 0) {
printk(KERN_ERR "asoc: can't open interface %s\n",
cpu_dai->name);
@@ -158,7 +151,7 @@ static int soc_pcm_open(struct snd_pcm_substream *substream)
}
if (codec_dai->ops.startup) {
- ret = codec_dai->ops.startup(substream);
+ ret = codec_dai->ops.startup(substream, codec_dai);
if (ret < 0) {
printk(KERN_ERR "asoc: can't open codec %s\n",
codec_dai->name);
@@ -228,12 +221,12 @@ static int soc_pcm_open(struct snd_pcm_substream *substream)
goto machine_err;
}
- dbg("asoc: %s <-> %s info:\n", codec_dai->name, cpu_dai->name);
- dbg("asoc: rate mask 0x%x\n", runtime->hw.rates);
- dbg("asoc: min ch %d max ch %d\n", runtime->hw.channels_min,
- runtime->hw.channels_max);
- dbg("asoc: min rate %d max rate %d\n", runtime->hw.rate_min,
- runtime->hw.rate_max);
+ pr_debug("asoc: %s <-> %s info:\n", codec_dai->name, cpu_dai->name);
+ pr_debug("asoc: rate mask 0x%x\n", runtime->hw.rates);
+ pr_debug("asoc: min ch %d max ch %d\n", runtime->hw.channels_min,
+ runtime->hw.channels_max);
+ pr_debug("asoc: min rate %d max rate %d\n", runtime->hw.rate_min,
+ runtime->hw.rate_max);
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
cpu_dai->playback.active = codec_dai->playback.active = 1;
@@ -255,7 +248,7 @@ codec_dai_err:
platform_err:
if (cpu_dai->ops.shutdown)
- cpu_dai->ops.shutdown(substream);
+ cpu_dai->ops.shutdown(substream, cpu_dai);
out:
mutex_unlock(&pcm_mutex);
return ret;
@@ -268,8 +261,9 @@ out:
*/
static void close_delayed_work(struct work_struct *work)
{
- struct snd_soc_device *socdev =
- container_of(work, struct snd_soc_device, delayed_work.work);
+ struct snd_soc_card *card = container_of(work, struct snd_soc_card,
+ delayed_work.work);
+ struct snd_soc_device *socdev = card->socdev;
struct snd_soc_codec *codec = socdev->codec;
struct snd_soc_dai *codec_dai;
int i;
@@ -278,18 +272,18 @@ static void close_delayed_work(struct work_struct *work)
for (i = 0; i < codec->num_dai; i++) {
codec_dai = &codec->dai[i];
- dbg("pop wq checking: %s status: %s waiting: %s\n",
- codec_dai->playback.stream_name,
- codec_dai->playback.active ? "active" : "inactive",
- codec_dai->pop_wait ? "yes" : "no");
+ pr_debug("pop wq checking: %s status: %s waiting: %s\n",
+ codec_dai->playback.stream_name,
+ codec_dai->playback.active ? "active" : "inactive",
+ codec_dai->pop_wait ? "yes" : "no");
/* are we waiting on this codec DAI stream */
if (codec_dai->pop_wait == 1) {
/* Reduce power if no longer active */
if (codec->active == 0) {
- dbg("pop wq D1 %s %s\n", codec->name,
- codec_dai->playback.stream_name);
+ pr_debug("pop wq D1 %s %s\n", codec->name,
+ codec_dai->playback.stream_name);
snd_soc_dapm_set_bias_level(socdev,
SND_SOC_BIAS_PREPARE);
}
@@ -301,8 +295,8 @@ static void close_delayed_work(struct work_struct *work)
/* Fall into standby if no longer active */
if (codec->active == 0) {
- dbg("pop wq D3 %s %s\n", codec->name,
- codec_dai->playback.stream_name);
+ pr_debug("pop wq D3 %s %s\n", codec->name,
+ codec_dai->playback.stream_name);
snd_soc_dapm_set_bias_level(socdev,
SND_SOC_BIAS_STANDBY);
}
@@ -320,8 +314,9 @@ static int soc_codec_close(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_device *socdev = rtd->socdev;
+ struct snd_soc_card *card = socdev->card;
struct snd_soc_dai_link *machine = rtd->dai;
- struct snd_soc_platform *platform = socdev->platform;
+ struct snd_soc_platform *platform = card->platform;
struct snd_soc_dai *cpu_dai = machine->cpu_dai;
struct snd_soc_dai *codec_dai = machine->codec_dai;
struct snd_soc_codec *codec = socdev->codec;
@@ -346,10 +341,10 @@ static int soc_codec_close(struct snd_pcm_substream *substream)
snd_soc_dai_digital_mute(codec_dai, 1);
if (cpu_dai->ops.shutdown)
- cpu_dai->ops.shutdown(substream);
+ cpu_dai->ops.shutdown(substream, cpu_dai);
if (codec_dai->ops.shutdown)
- codec_dai->ops.shutdown(substream);
+ codec_dai->ops.shutdown(substream, codec_dai);
if (machine->ops && machine->ops->shutdown)
machine->ops->shutdown(substream);
@@ -361,7 +356,7 @@ static int soc_codec_close(struct snd_pcm_substream *substream)
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
/* start delayed pop wq here for playback streams */
codec_dai->pop_wait = 1;
- schedule_delayed_work(&socdev->delayed_work,
+ schedule_delayed_work(&card->delayed_work,
msecs_to_jiffies(pmdown_time));
} else {
/* capture streams can be powered down now */
@@ -387,8 +382,9 @@ static int soc_pcm_prepare(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_device *socdev = rtd->socdev;
+ struct snd_soc_card *card = socdev->card;
struct snd_soc_dai_link *machine = rtd->dai;
- struct snd_soc_platform *platform = socdev->platform;
+ struct snd_soc_platform *platform = card->platform;
struct snd_soc_dai *cpu_dai = machine->cpu_dai;
struct snd_soc_dai *codec_dai = machine->codec_dai;
struct snd_soc_codec *codec = socdev->codec;
@@ -413,7 +409,7 @@ static int soc_pcm_prepare(struct snd_pcm_substream *substream)
}
if (codec_dai->ops.prepare) {
- ret = codec_dai->ops.prepare(substream);
+ ret = codec_dai->ops.prepare(substream, codec_dai);
if (ret < 0) {
printk(KERN_ERR "asoc: codec DAI prepare error\n");
goto out;
@@ -421,58 +417,49 @@ static int soc_pcm_prepare(struct snd_pcm_substream *substream)
}
if (cpu_dai->ops.prepare) {
- ret = cpu_dai->ops.prepare(substream);
+ ret = cpu_dai->ops.prepare(substream, cpu_dai);
if (ret < 0) {
printk(KERN_ERR "asoc: cpu DAI prepare error\n");
goto out;
}
}
- /* we only want to start a DAPM playback stream if we are not waiting
- * on an existing one stopping */
- if (codec_dai->pop_wait) {
- /* we are waiting for the delayed work to start */
- if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
- snd_soc_dapm_stream_event(socdev->codec,
- codec_dai->capture.stream_name,
- SND_SOC_DAPM_STREAM_START);
- else {
- codec_dai->pop_wait = 0;
- cancel_delayed_work(&socdev->delayed_work);
- snd_soc_dai_digital_mute(codec_dai, 0);
- }
- } else {
- /* no delayed work - do we need to power up codec */
- if (codec->bias_level != SND_SOC_BIAS_ON) {
+ /* cancel any delayed stream shutdown that is pending */
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK &&
+ codec_dai->pop_wait) {
+ codec_dai->pop_wait = 0;
+ cancel_delayed_work(&card->delayed_work);
+ }
- snd_soc_dapm_set_bias_level(socdev,
- SND_SOC_BIAS_PREPARE);
+ /* do we need to power up codec */
+ if (codec->bias_level != SND_SOC_BIAS_ON) {
+ snd_soc_dapm_set_bias_level(socdev,
+ SND_SOC_BIAS_PREPARE);
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
- snd_soc_dapm_stream_event(codec,
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ snd_soc_dapm_stream_event(codec,
codec_dai->playback.stream_name,
SND_SOC_DAPM_STREAM_START);
- else
- snd_soc_dapm_stream_event(codec,
+ else
+ snd_soc_dapm_stream_event(codec,
codec_dai->capture.stream_name,
SND_SOC_DAPM_STREAM_START);
- snd_soc_dapm_set_bias_level(socdev, SND_SOC_BIAS_ON);
- snd_soc_dai_digital_mute(codec_dai, 0);
+ snd_soc_dapm_set_bias_level(socdev, SND_SOC_BIAS_ON);
+ snd_soc_dai_digital_mute(codec_dai, 0);
- } else {
- /* codec already powered - power on widgets */
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
- snd_soc_dapm_stream_event(codec,
+ } else {
+ /* codec already powered - power on widgets */
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ snd_soc_dapm_stream_event(codec,
codec_dai->playback.stream_name,
SND_SOC_DAPM_STREAM_START);
- else
- snd_soc_dapm_stream_event(codec,
+ else
+ snd_soc_dapm_stream_event(codec,
codec_dai->capture.stream_name,
SND_SOC_DAPM_STREAM_START);
- snd_soc_dai_digital_mute(codec_dai, 0);
- }
+ snd_soc_dai_digital_mute(codec_dai, 0);
}
out:
@@ -491,7 +478,8 @@ static int soc_pcm_hw_params(struct snd_pcm_substream *substream,
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_device *socdev = rtd->socdev;
struct snd_soc_dai_link *machine = rtd->dai;
- struct snd_soc_platform *platform = socdev->platform;
+ struct snd_soc_card *card = socdev->card;
+ struct snd_soc_platform *platform = card->platform;
struct snd_soc_dai *cpu_dai = machine->cpu_dai;
struct snd_soc_dai *codec_dai = machine->codec_dai;
int ret = 0;
@@ -507,7 +495,7 @@ static int soc_pcm_hw_params(struct snd_pcm_substream *substream,
}
if (codec_dai->ops.hw_params) {
- ret = codec_dai->ops.hw_params(substream, params);
+ ret = codec_dai->ops.hw_params(substream, params, codec_dai);
if (ret < 0) {
printk(KERN_ERR "asoc: can't set codec %s hw params\n",
codec_dai->name);
@@ -516,7 +504,7 @@ static int soc_pcm_hw_params(struct snd_pcm_substream *substream,
}
if (cpu_dai->ops.hw_params) {
- ret = cpu_dai->ops.hw_params(substream, params);
+ ret = cpu_dai->ops.hw_params(substream, params, cpu_dai);
if (ret < 0) {
printk(KERN_ERR "asoc: interface %s hw params failed\n",
cpu_dai->name);
@@ -539,11 +527,11 @@ out:
platform_err:
if (cpu_dai->ops.hw_free)
- cpu_dai->ops.hw_free(substream);
+ cpu_dai->ops.hw_free(substream, cpu_dai);
interface_err:
if (codec_dai->ops.hw_free)
- codec_dai->ops.hw_free(substream);
+ codec_dai->ops.hw_free(substream, codec_dai);
codec_err:
if (machine->ops && machine->ops->hw_free)
@@ -561,7 +549,8 @@ static int soc_pcm_hw_free(struct snd_pcm_substream *substream)
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_device *socdev = rtd->socdev;
struct snd_soc_dai_link *machine = rtd->dai;
- struct snd_soc_platform *platform = socdev->platform;
+ struct snd_soc_card *card = socdev->card;
+ struct snd_soc_platform *platform = card->platform;
struct snd_soc_dai *cpu_dai = machine->cpu_dai;
struct snd_soc_dai *codec_dai = machine->codec_dai;
struct snd_soc_codec *codec = socdev->codec;
@@ -582,10 +571,10 @@ static int soc_pcm_hw_free(struct snd_pcm_substream *substream)
/* now free hw params for the DAI's */
if (codec_dai->ops.hw_free)
- codec_dai->ops.hw_free(substream);
+ codec_dai->ops.hw_free(substream, codec_dai);
if (cpu_dai->ops.hw_free)
- cpu_dai->ops.hw_free(substream);
+ cpu_dai->ops.hw_free(substream, cpu_dai);
mutex_unlock(&pcm_mutex);
return 0;
@@ -595,14 +584,15 @@ static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_device *socdev = rtd->socdev;
+ struct snd_soc_card *card= socdev->card;
struct snd_soc_dai_link *machine = rtd->dai;
- struct snd_soc_platform *platform = socdev->platform;
+ struct snd_soc_platform *platform = card->platform;
struct snd_soc_dai *cpu_dai = machine->cpu_dai;
struct snd_soc_dai *codec_dai = machine->codec_dai;
int ret;
if (codec_dai->ops.trigger) {
- ret = codec_dai->ops.trigger(substream, cmd);
+ ret = codec_dai->ops.trigger(substream, cmd, codec_dai);
if (ret < 0)
return ret;
}
@@ -614,7 +604,7 @@ static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
}
if (cpu_dai->ops.trigger) {
- ret = cpu_dai->ops.trigger(substream, cmd);
+ ret = cpu_dai->ops.trigger(substream, cmd, cpu_dai);
if (ret < 0)
return ret;
}
@@ -636,8 +626,8 @@ static struct snd_pcm_ops soc_pcm_ops = {
static int soc_suspend(struct platform_device *pdev, pm_message_t state)
{
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
- struct snd_soc_machine *machine = socdev->machine;
- struct snd_soc_platform *platform = socdev->platform;
+ struct snd_soc_card *card = socdev->card;
+ struct snd_soc_platform *platform = card->platform;
struct snd_soc_codec_device *codec_dev = socdev->codec_dev;
struct snd_soc_codec *codec = socdev->codec;
int i;
@@ -653,29 +643,29 @@ static int soc_suspend(struct platform_device *pdev, pm_message_t state)
snd_power_change_state(codec->card, SNDRV_CTL_POWER_D3hot);
/* mute any active DAC's */
- for (i = 0; i < machine->num_links; i++) {
- struct snd_soc_dai *dai = machine->dai_link[i].codec_dai;
- if (dai->dai_ops.digital_mute && dai->playback.active)
- dai->dai_ops.digital_mute(dai, 1);
+ for (i = 0; i < card->num_links; i++) {
+ struct snd_soc_dai *dai = card->dai_link[i].codec_dai;
+ if (dai->ops.digital_mute && dai->playback.active)
+ dai->ops.digital_mute(dai, 1);
}
/* suspend all pcms */
- for (i = 0; i < machine->num_links; i++)
- snd_pcm_suspend_all(machine->dai_link[i].pcm);
+ for (i = 0; i < card->num_links; i++)
+ snd_pcm_suspend_all(card->dai_link[i].pcm);
- if (machine->suspend_pre)
- machine->suspend_pre(pdev, state);
+ if (card->suspend_pre)
+ card->suspend_pre(pdev, state);
- for (i = 0; i < machine->num_links; i++) {
- struct snd_soc_dai *cpu_dai = machine->dai_link[i].cpu_dai;
- if (cpu_dai->suspend && cpu_dai->type != SND_SOC_DAI_AC97)
- cpu_dai->suspend(pdev, cpu_dai);
+ for (i = 0; i < card->num_links; i++) {
+ struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai;
+ if (cpu_dai->suspend && !cpu_dai->ac97_control)
+ cpu_dai->suspend(cpu_dai);
if (platform->suspend)
- platform->suspend(pdev, cpu_dai);
+ platform->suspend(cpu_dai);
}
/* close any waiting streams and save state */
- run_delayed_work(&socdev->delayed_work);
+ run_delayed_work(&card->delayed_work);
codec->suspend_bias_level = codec->bias_level;
for (i = 0; i < codec->num_dai; i++) {
@@ -692,14 +682,14 @@ static int soc_suspend(struct platform_device *pdev, pm_message_t state)
if (codec_dev->suspend)
codec_dev->suspend(pdev, state);
- for (i = 0; i < machine->num_links; i++) {
- struct snd_soc_dai *cpu_dai = machine->dai_link[i].cpu_dai;
- if (cpu_dai->suspend && cpu_dai->type == SND_SOC_DAI_AC97)
- cpu_dai->suspend(pdev, cpu_dai);
+ for (i = 0; i < card->num_links; i++) {
+ struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai;
+ if (cpu_dai->suspend && cpu_dai->ac97_control)
+ cpu_dai->suspend(cpu_dai);
}
- if (machine->suspend_post)
- machine->suspend_post(pdev, state);
+ if (card->suspend_post)
+ card->suspend_post(pdev, state);
return 0;
}
@@ -709,11 +699,11 @@ static int soc_suspend(struct platform_device *pdev, pm_message_t state)
*/
static void soc_resume_deferred(struct work_struct *work)
{
- struct snd_soc_device *socdev = container_of(work,
- struct snd_soc_device,
- deferred_resume_work);
- struct snd_soc_machine *machine = socdev->machine;
- struct snd_soc_platform *platform = socdev->platform;
+ struct snd_soc_card *card = container_of(work,
+ struct snd_soc_card,
+ deferred_resume_work);
+ struct snd_soc_device *socdev = card->socdev;
+ struct snd_soc_platform *platform = card->platform;
struct snd_soc_codec_device *codec_dev = socdev->codec_dev;
struct snd_soc_codec *codec = socdev->codec;
struct platform_device *pdev = to_platform_device(socdev->dev);
@@ -723,15 +713,15 @@ static void soc_resume_deferred(struct work_struct *work)
* so userspace apps are blocked from touching us
*/
- dev_info(socdev->dev, "starting resume work\n");
+ dev_dbg(socdev->dev, "starting resume work\n");
- if (machine->resume_pre)
- machine->resume_pre(pdev);
+ if (card->resume_pre)
+ card->resume_pre(pdev);
- for (i = 0; i < machine->num_links; i++) {
- struct snd_soc_dai *cpu_dai = machine->dai_link[i].cpu_dai;
- if (cpu_dai->resume && cpu_dai->type == SND_SOC_DAI_AC97)
- cpu_dai->resume(pdev, cpu_dai);
+ for (i = 0; i < card->num_links; i++) {
+ struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai;
+ if (cpu_dai->resume && cpu_dai->ac97_control)
+ cpu_dai->resume(cpu_dai);
}
if (codec_dev->resume)
@@ -749,24 +739,24 @@ static void soc_resume_deferred(struct work_struct *work)
}
/* unmute any active DACs */
- for (i = 0; i < machine->num_links; i++) {
- struct snd_soc_dai *dai = machine->dai_link[i].codec_dai;
- if (dai->dai_ops.digital_mute && dai->playback.active)
- dai->dai_ops.digital_mute(dai, 0);
+ for (i = 0; i < card->num_links; i++) {
+ struct snd_soc_dai *dai = card->dai_link[i].codec_dai;
+ if (dai->ops.digital_mute && dai->playback.active)
+ dai->ops.digital_mute(dai, 0);
}
- for (i = 0; i < machine->num_links; i++) {
- struct snd_soc_dai *cpu_dai = machine->dai_link[i].cpu_dai;
- if (cpu_dai->resume && cpu_dai->type != SND_SOC_DAI_AC97)
- cpu_dai->resume(pdev, cpu_dai);
+ for (i = 0; i < card->num_links; i++) {
+ struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai;
+ if (cpu_dai->resume && !cpu_dai->ac97_control)
+ cpu_dai->resume(cpu_dai);
if (platform->resume)
- platform->resume(pdev, cpu_dai);
+ platform->resume(cpu_dai);
}
- if (machine->resume_post)
- machine->resume_post(pdev);
+ if (card->resume_post)
+ card->resume_post(pdev);
- dev_info(socdev->dev, "resume work completed\n");
+ dev_dbg(socdev->dev, "resume work completed\n");
/* userspace can access us now we are back as we were before */
snd_power_change_state(codec->card, SNDRV_CTL_POWER_D0);
@@ -776,11 +766,12 @@ static void soc_resume_deferred(struct work_struct *work)
static int soc_resume(struct platform_device *pdev)
{
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+ struct snd_soc_card *card = socdev->card;
- dev_info(socdev->dev, "scheduling resume work\n");
+ dev_dbg(socdev->dev, "scheduling resume work\n");
- if (!schedule_work(&socdev->deferred_resume_work))
- dev_err(socdev->dev, "work item may be lost\n");
+ if (!schedule_work(&card->deferred_resume_work))
+ dev_err(socdev->dev, "resume work item may be lost\n");
return 0;
}
@@ -790,23 +781,83 @@ static int soc_resume(struct platform_device *pdev)
#define soc_resume NULL
#endif
-/* probes a new socdev */
-static int soc_probe(struct platform_device *pdev)
+static void snd_soc_instantiate_card(struct snd_soc_card *card)
{
- int ret = 0, i;
- struct snd_soc_device *socdev = platform_get_drvdata(pdev);
- struct snd_soc_machine *machine = socdev->machine;
- struct snd_soc_platform *platform = socdev->platform;
- struct snd_soc_codec_device *codec_dev = socdev->codec_dev;
+ struct platform_device *pdev = container_of(card->dev,
+ struct platform_device,
+ dev);
+ struct snd_soc_codec_device *codec_dev = card->socdev->codec_dev;
+ struct snd_soc_platform *platform;
+ struct snd_soc_dai *dai;
+ int i, found, ret, ac97;
+
+ if (card->instantiated)
+ return;
+
+ found = 0;
+ list_for_each_entry(platform, &platform_list, list)
+ if (card->platform == platform) {
+ found = 1;
+ break;
+ }
+ if (!found) {
+ dev_dbg(card->dev, "Platform %s not registered\n",
+ card->platform->name);
+ return;
+ }
+
+ ac97 = 0;
+ for (i = 0; i < card->num_links; i++) {
+ found = 0;
+ list_for_each_entry(dai, &dai_list, list)
+ if (card->dai_link[i].cpu_dai == dai) {
+ found = 1;
+ break;
+ }
+ if (!found) {
+ dev_dbg(card->dev, "DAI %s not registered\n",
+ card->dai_link[i].cpu_dai->name);
+ return;
+ }
- if (machine->probe) {
- ret = machine->probe(pdev);
+ if (card->dai_link[i].cpu_dai->ac97_control)
+ ac97 = 1;
+ }
+
+ /* If we have AC97 in the system then don't wait for the
+ * codec. This will need revisiting if we have to handle
+ * systems with mixed AC97 and non-AC97 parts. Only check for
+ * DAIs currently; we can't do this per link since some AC97
+ * codecs have non-AC97 DAIs.
+ */
+ if (!ac97)
+ for (i = 0; i < card->num_links; i++) {
+ found = 0;
+ list_for_each_entry(dai, &dai_list, list)
+ if (card->dai_link[i].codec_dai == dai) {
+ found = 1;
+ break;
+ }
+ if (!found) {
+ dev_dbg(card->dev, "DAI %s not registered\n",
+ card->dai_link[i].codec_dai->name);
+ return;
+ }
+ }
+
+ /* Note that we do not current check for codec components */
+
+ dev_dbg(card->dev, "All components present, instantiating\n");
+
+ /* Found everything, bring it up */
+ if (card->probe) {
+ ret = card->probe(pdev);
if (ret < 0)
- return ret;
+ return;
}
- for (i = 0; i < machine->num_links; i++) {
- struct snd_soc_dai *cpu_dai = machine->dai_link[i].cpu_dai;
+ for (i = 0; i < card->num_links; i++) {
+ struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai;
if (cpu_dai->probe) {
ret = cpu_dai->probe(pdev, cpu_dai);
if (ret < 0)
@@ -827,13 +878,15 @@ static int soc_probe(struct platform_device *pdev)
}
/* DAPM stream work */
- INIT_DELAYED_WORK(&socdev->delayed_work, close_delayed_work);
+ INIT_DELAYED_WORK(&card->delayed_work, close_delayed_work);
#ifdef CONFIG_PM
/* deferred resume work */
- INIT_WORK(&socdev->deferred_resume_work, soc_resume_deferred);
+ INIT_WORK(&card->deferred_resume_work, soc_resume_deferred);
#endif
- return 0;
+ card->instantiated = 1;
+
+ return;
platform_err:
if (codec_dev->remove)
@@ -841,15 +894,45 @@ platform_err:
cpu_dai_err:
for (i--; i >= 0; i--) {
- struct snd_soc_dai *cpu_dai = machine->dai_link[i].cpu_dai;
+ struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai;
if (cpu_dai->remove)
cpu_dai->remove(pdev, cpu_dai);
}
- if (machine->remove)
- machine->remove(pdev);
+ if (card->remove)
+ card->remove(pdev);
+}
- return ret;
+/*
+ * Attempt to initialise any uninitalised cards. Must be called with
+ * client_mutex.
+ */
+static void snd_soc_instantiate_cards(void)
+{
+ struct snd_soc_card *card;
+ list_for_each_entry(card, &card_list, list)
+ snd_soc_instantiate_card(card);
+}
+
+/* probes a new socdev */
+static int soc_probe(struct platform_device *pdev)
+{
+ int ret = 0;
+ struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+ struct snd_soc_card *card = socdev->card;
+
+ /* Bodge while we push things out of socdev */
+ card->socdev = socdev;
+
+ /* Bodge while we unpick instantiation */
+ card->dev = &pdev->dev;
+ ret = snd_soc_register_card(card);
+ if (ret != 0) {
+ dev_err(&pdev->dev, "Failed to register card\n");
+ return ret;
+ }
+
+ return 0;
}
/* removes a socdev */
@@ -857,11 +940,11 @@ static int soc_remove(struct platform_device *pdev)
{
int i;
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
- struct snd_soc_machine *machine = socdev->machine;
- struct snd_soc_platform *platform = socdev->platform;
+ struct snd_soc_card *card = socdev->card;
+ struct snd_soc_platform *platform = card->platform;
struct snd_soc_codec_device *codec_dev = socdev->codec_dev;
- run_delayed_work(&socdev->delayed_work);
+ run_delayed_work(&card->delayed_work);
if (platform->remove)
platform->remove(pdev);
@@ -869,14 +952,16 @@ static int soc_remove(struct platform_device *pdev)
if (codec_dev->remove)
codec_dev->remove(pdev);
- for (i = 0; i < machine->num_links; i++) {
- struct snd_soc_dai *cpu_dai = machine->dai_link[i].cpu_dai;
+ for (i = 0; i < card->num_links; i++) {
+ struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai;
if (cpu_dai->remove)
cpu_dai->remove(pdev, cpu_dai);
}
- if (machine->remove)
- machine->remove(pdev);
+ if (card->remove)
+ card->remove(pdev);
+
+ snd_soc_unregister_card(card);
return 0;
}
@@ -898,6 +983,8 @@ static int soc_new_pcm(struct snd_soc_device *socdev,
struct snd_soc_dai_link *dai_link, int num)
{
struct snd_soc_codec *codec = socdev->codec;
+ struct snd_soc_card *card = socdev->card;
+ struct snd_soc_platform *platform = card->platform;
struct snd_soc_dai *codec_dai = dai_link->codec_dai;
struct snd_soc_dai *cpu_dai = dai_link->cpu_dai;
struct snd_soc_pcm_runtime *rtd;
@@ -914,8 +1001,8 @@ static int soc_new_pcm(struct snd_soc_device *socdev,
codec_dai->codec = socdev->codec;
/* check client and interface hw capabilities */
- sprintf(new_name, "%s %s-%s-%d", dai_link->stream_name, codec_dai->name,
- get_dai_name(cpu_dai->type), num);
+ sprintf(new_name, "%s %s-%d", dai_link->stream_name, codec_dai->name,
+ num);
if (codec_dai->playback.channels_min)
playback = 1;
@@ -933,13 +1020,13 @@ static int soc_new_pcm(struct snd_soc_device *socdev,
dai_link->pcm = pcm;
pcm->private_data = rtd;
- soc_pcm_ops.mmap = socdev->platform->pcm_ops->mmap;
- soc_pcm_ops.pointer = socdev->platform->pcm_ops->pointer;
- soc_pcm_ops.ioctl = socdev->platform->pcm_ops->ioctl;
- soc_pcm_ops.copy = socdev->platform->pcm_ops->copy;
- soc_pcm_ops.silence = socdev->platform->pcm_ops->silence;
- soc_pcm_ops.ack = socdev->platform->pcm_ops->ack;
- soc_pcm_ops.page = socdev->platform->pcm_ops->page;
+ soc_pcm_ops.mmap = platform->pcm_ops->mmap;
+ soc_pcm_ops.pointer = platform->pcm_ops->pointer;
+ soc_pcm_ops.ioctl = platform->pcm_ops->ioctl;
+ soc_pcm_ops.copy = platform->pcm_ops->copy;
+ soc_pcm_ops.silence = platform->pcm_ops->silence;
+ soc_pcm_ops.ack = platform->pcm_ops->ack;
+ soc_pcm_ops.page = platform->pcm_ops->page;
if (playback)
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &soc_pcm_ops);
@@ -947,24 +1034,22 @@ static int soc_new_pcm(struct snd_soc_device *socdev,
if (capture)
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &soc_pcm_ops);
- ret = socdev->platform->pcm_new(codec->card, codec_dai, pcm);
+ ret = platform->pcm_new(codec->card, codec_dai, pcm);
if (ret < 0) {
printk(KERN_ERR "asoc: platform pcm constructor failed\n");
kfree(rtd);
return ret;
}
- pcm->private_free = socdev->platform->pcm_free;
+ pcm->private_free = platform->pcm_free;
printk(KERN_INFO "asoc: %s <-> %s mapping ok\n", codec_dai->name,
cpu_dai->name);
return ret;
}
/* codec register dump */
-static ssize_t codec_reg_show(struct device *dev,
- struct device_attribute *attr, char *buf)
+static ssize_t soc_codec_reg_show(struct snd_soc_device *devdata, char *buf)
{
- struct snd_soc_device *devdata = dev_get_drvdata(dev);
struct snd_soc_codec *codec = devdata->codec;
int i, step = 1, count = 0;
@@ -1001,8 +1086,110 @@ static ssize_t codec_reg_show(struct device *dev,
return count;
}
+static ssize_t codec_reg_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct snd_soc_device *devdata = dev_get_drvdata(dev);
+ return soc_codec_reg_show(devdata, buf);
+}
+
static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL);
+#ifdef CONFIG_DEBUG_FS
+static int codec_reg_open_file(struct inode *inode, struct file *file)
+{
+ file->private_data = inode->i_private;
+ return 0;
+}
+
+static ssize_t codec_reg_read_file(struct file *file, char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ ssize_t ret;
+ struct snd_soc_codec *codec = file->private_data;
+ struct device *card_dev = codec->card->dev;
+ struct snd_soc_device *devdata = card_dev->driver_data;
+ char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+ ret = soc_codec_reg_show(devdata, buf);
+ if (ret >= 0)
+ ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
+ kfree(buf);
+ return ret;
+}
+
+static ssize_t codec_reg_write_file(struct file *file,
+ const char __user *user_buf, size_t count, loff_t *ppos)
+{
+ char buf[32];
+ int buf_size;
+ char *start = buf;
+ unsigned long reg, value;
+ int step = 1;
+ struct snd_soc_codec *codec = file->private_data;
+
+ buf_size = min(count, (sizeof(buf)-1));
+ if (copy_from_user(buf, user_buf, buf_size))
+ return -EFAULT;
+ buf[buf_size] = 0;
+
+ if (codec->reg_cache_step)
+ step = codec->reg_cache_step;
+
+ while (*start == ' ')
+ start++;
+ reg = simple_strtoul(start, &start, 16);
+ if ((reg >= codec->reg_cache_size) || (reg % step))
+ return -EINVAL;
+ while (*start == ' ')
+ start++;
+ if (strict_strtoul(start, 16, &value))
+ return -EINVAL;
+ codec->write(codec, reg, value);
+ return buf_size;
+}
+
+static const struct file_operations codec_reg_fops = {
+ .open = codec_reg_open_file,
+ .read = codec_reg_read_file,
+ .write = codec_reg_write_file,
+};
+
+static void soc_init_codec_debugfs(struct snd_soc_codec *codec)
+{
+ codec->debugfs_reg = debugfs_create_file("codec_reg", 0644,
+ debugfs_root, codec,
+ &codec_reg_fops);
+ if (!codec->debugfs_reg)
+ printk(KERN_WARNING
+ "ASoC: Failed to create codec register debugfs file\n");
+
+ codec->debugfs_pop_time = debugfs_create_u32("dapm_pop_time", 0744,
+ debugfs_root,
+ &codec->pop_time);
+ if (!codec->debugfs_pop_time)
+ printk(KERN_WARNING
+ "Failed to create pop time debugfs file\n");
+}
+
+static void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
+{
+ debugfs_remove(codec->debugfs_pop_time);
+ debugfs_remove(codec->debugfs_reg);
+}
+
+#else
+
+static inline void soc_init_codec_debugfs(struct snd_soc_codec *codec)
+{
+}
+
+static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
+{
+}
+#endif
+
/**
* snd_soc_new_ac97_codec - initailise AC97 device
* @codec: audio codec
@@ -1121,7 +1308,7 @@ EXPORT_SYMBOL_GPL(snd_soc_test_bits);
int snd_soc_new_pcms(struct snd_soc_device *socdev, int idx, const char *xid)
{
struct snd_soc_codec *codec = socdev->codec;
- struct snd_soc_machine *machine = socdev->machine;
+ struct snd_soc_card *card = socdev->card;
int ret = 0, i;
mutex_lock(&codec->mutex);
@@ -1140,11 +1327,11 @@ int snd_soc_new_pcms(struct snd_soc_device *socdev, int idx, const char *xid)
strncpy(codec->card->driver, codec->name, sizeof(codec->card->driver));
/* create the pcms */
- for (i = 0; i < machine->num_links; i++) {
- ret = soc_new_pcm(socdev, &machine->dai_link[i], i);
+ for (i = 0; i < card->num_links; i++) {
+ ret = soc_new_pcm(socdev, &card->dai_link[i], i);
if (ret < 0) {
printk(KERN_ERR "asoc: can't create pcm %s\n",
- machine->dai_link[i].stream_name);
+ card->dai_link[i].stream_name);
mutex_unlock(&codec->mutex);
return ret;
}
@@ -1156,7 +1343,7 @@ int snd_soc_new_pcms(struct snd_soc_device *socdev, int idx, const char *xid)
EXPORT_SYMBOL_GPL(snd_soc_new_pcms);
/**
- * snd_soc_register_card - register sound card
+ * snd_soc_init_card - register sound card
* @socdev: the SoC audio device
*
* Register a SoC sound card. Also registers an AC97 device if the
@@ -1164,29 +1351,28 @@ EXPORT_SYMBOL_GPL(snd_soc_new_pcms);
*
* Returns 0 for success, else error.
*/
-int snd_soc_register_card(struct snd_soc_device *socdev)
+int snd_soc_init_card(struct snd_soc_device *socdev)
{
struct snd_soc_codec *codec = socdev->codec;
- struct snd_soc_machine *machine = socdev->machine;
+ struct snd_soc_card *card = socdev->card;
int ret = 0, i, ac97 = 0, err = 0;
- for (i = 0; i < machine->num_links; i++) {
- if (socdev->machine->dai_link[i].init) {
- err = socdev->machine->dai_link[i].init(codec);
+ for (i = 0; i < card->num_links; i++) {
+ if (card->dai_link[i].init) {
+ err = card->dai_link[i].init(codec);
if (err < 0) {
printk(KERN_ERR "asoc: failed to init %s\n",
- socdev->machine->dai_link[i].stream_name);
+ card->dai_link[i].stream_name);
continue;
}
}
- if (socdev->machine->dai_link[i].codec_dai->type ==
- SND_SOC_DAI_AC97_BUS)
+ if (card->dai_link[i].codec_dai->ac97_control)
ac97 = 1;
}
snprintf(codec->card->shortname, sizeof(codec->card->shortname),
- "%s", machine->name);
+ "%s", card->name);
snprintf(codec->card->longname, sizeof(codec->card->longname),
- "%s (%s)", machine->name, codec->name);
+ "%s (%s)", card->name, codec->name);
ret = snd_card_register(codec->card);
if (ret < 0) {
@@ -1216,12 +1402,13 @@ int snd_soc_register_card(struct snd_soc_device *socdev)
if (err < 0)
printk(KERN_WARNING "asoc: failed to add codec sysfs files\n");
+ soc_init_codec_debugfs(socdev->codec);
mutex_unlock(&codec->mutex);
out:
return ret;
}
-EXPORT_SYMBOL_GPL(snd_soc_register_card);
+EXPORT_SYMBOL_GPL(snd_soc_init_card);
/**
* snd_soc_free_pcms - free sound card and pcms
@@ -1239,10 +1426,11 @@ void snd_soc_free_pcms(struct snd_soc_device *socdev)
#endif
mutex_lock(&codec->mutex);
+ soc_cleanup_codec_debugfs(socdev->codec);
#ifdef CONFIG_SND_SOC_AC97_BUS
for (i = 0; i < codec->num_dai; i++) {
codec_dai = &codec->dai[i];
- if (codec_dai->type == SND_SOC_DAI_AC97_BUS && codec->ac97) {
+ if (codec_dai->ac97_control && codec->ac97) {
soc_ac97_dev_unregister(codec);
goto free_card;
}
@@ -1756,8 +1944,8 @@ EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8);
int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
unsigned int freq, int dir)
{
- if (dai->dai_ops.set_sysclk)
- return dai->dai_ops.set_sysclk(dai, clk_id, freq, dir);
+ if (dai->ops.set_sysclk)
+ return dai->ops.set_sysclk(dai, clk_id, freq, dir);
else
return -EINVAL;
}
@@ -1776,8 +1964,8 @@ EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk);
int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai,
int div_id, int div)
{
- if (dai->dai_ops.set_clkdiv)
- return dai->dai_ops.set_clkdiv(dai, div_id, div);
+ if (dai->ops.set_clkdiv)
+ return dai->ops.set_clkdiv(dai, div_id, div);
else
return -EINVAL;
}
@@ -1795,8 +1983,8 @@ EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv);
int snd_soc_dai_set_pll(struct snd_soc_dai *dai,
int pll_id, unsigned int freq_in, unsigned int freq_out)
{
- if (dai->dai_ops.set_pll)
- return dai->dai_ops.set_pll(dai, pll_id, freq_in, freq_out);
+ if (dai->ops.set_pll)
+ return dai->ops.set_pll(dai, pll_id, freq_in, freq_out);
else
return -EINVAL;
}
@@ -1805,15 +1993,14 @@ EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll);
/**
* snd_soc_dai_set_fmt - configure DAI hardware audio format.
* @dai: DAI
- * @clk_id: DAI specific clock ID
* @fmt: SND_SOC_DAIFMT_ format value.
*
* Configures the DAI hardware format and clocking.
*/
int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
{
- if (dai->dai_ops.set_fmt)
- return dai->dai_ops.set_fmt(dai, fmt);
+ if (dai->ops.set_fmt)
+ return dai->ops.set_fmt(dai, fmt);
else
return -EINVAL;
}
@@ -1831,8 +2018,8 @@ EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt);
int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
unsigned int mask, int slots)
{
- if (dai->dai_ops.set_sysclk)
- return dai->dai_ops.set_tdm_slot(dai, mask, slots);
+ if (dai->ops.set_sysclk)
+ return dai->ops.set_tdm_slot(dai, mask, slots);
else
return -EINVAL;
}
@@ -1847,8 +2034,8 @@ EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot);
*/
int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate)
{
- if (dai->dai_ops.set_sysclk)
- return dai->dai_ops.set_tristate(dai, tristate);
+ if (dai->ops.set_sysclk)
+ return dai->ops.set_tristate(dai, tristate);
else
return -EINVAL;
}
@@ -1863,21 +2050,242 @@ EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate);
*/
int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute)
{
- if (dai->dai_ops.digital_mute)
- return dai->dai_ops.digital_mute(dai, mute);
+ if (dai->ops.digital_mute)
+ return dai->ops.digital_mute(dai, mute);
else
return -EINVAL;
}
EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute);
-static int __devinit snd_soc_init(void)
+/**
+ * snd_soc_register_card - Register a card with the ASoC core
+ *
+ * @param card Card to register
+ *
+ * Note that currently this is an internal only function: it will be
+ * exposed to machine drivers after further backporting of ASoC v2
+ * registration APIs.
+ */
+static int snd_soc_register_card(struct snd_soc_card *card)
+{
+ if (!card->name || !card->dev)
+ return -EINVAL;
+
+ INIT_LIST_HEAD(&card->list);
+ card->instantiated = 0;
+
+ mutex_lock(&client_mutex);
+ list_add(&card->list, &card_list);
+ snd_soc_instantiate_cards();
+ mutex_unlock(&client_mutex);
+
+ dev_dbg(card->dev, "Registered card '%s'\n", card->name);
+
+ return 0;
+}
+
+/**
+ * snd_soc_unregister_card - Unregister a card with the ASoC core
+ *
+ * @param card Card to unregister
+ *
+ * Note that currently this is an internal only function: it will be
+ * exposed to machine drivers after further backporting of ASoC v2
+ * registration APIs.
+ */
+static int snd_soc_unregister_card(struct snd_soc_card *card)
+{
+ mutex_lock(&client_mutex);
+ list_del(&card->list);
+ mutex_unlock(&client_mutex);
+
+ dev_dbg(card->dev, "Unregistered card '%s'\n", card->name);
+
+ return 0;
+}
+
+/**
+ * snd_soc_register_dai - Register a DAI with the ASoC core
+ *
+ * @param dai DAI to register
+ */
+int snd_soc_register_dai(struct snd_soc_dai *dai)
+{
+ if (!dai->name)
+ return -EINVAL;
+
+ /* The device should become mandatory over time */
+ if (!dai->dev)
+ printk(KERN_WARNING "No device for DAI %s\n", dai->name);
+
+ INIT_LIST_HEAD(&dai->list);
+
+ mutex_lock(&client_mutex);
+ list_add(&dai->list, &dai_list);
+ snd_soc_instantiate_cards();
+ mutex_unlock(&client_mutex);
+
+ pr_debug("Registered DAI '%s'\n", dai->name);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_register_dai);
+
+/**
+ * snd_soc_unregister_dai - Unregister a DAI from the ASoC core
+ *
+ * @param dai DAI to unregister
+ */
+void snd_soc_unregister_dai(struct snd_soc_dai *dai)
+{
+ mutex_lock(&client_mutex);
+ list_del(&dai->list);
+ mutex_unlock(&client_mutex);
+
+ pr_debug("Unregistered DAI '%s'\n", dai->name);
+}
+EXPORT_SYMBOL_GPL(snd_soc_unregister_dai);
+
+/**
+ * snd_soc_register_dais - Register multiple DAIs with the ASoC core
+ *
+ * @param dai Array of DAIs to register
+ * @param count Number of DAIs
+ */
+int snd_soc_register_dais(struct snd_soc_dai *dai, size_t count)
+{
+ int i, ret;
+
+ for (i = 0; i < count; i++) {
+ ret = snd_soc_register_dai(&dai[i]);
+ if (ret != 0)
+ goto err;
+ }
+
+ return 0;
+
+err:
+ for (i--; i >= 0; i--)
+ snd_soc_unregister_dai(&dai[i]);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(snd_soc_register_dais);
+
+/**
+ * snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core
+ *
+ * @param dai Array of DAIs to unregister
+ * @param count Number of DAIs
+ */
+void snd_soc_unregister_dais(struct snd_soc_dai *dai, size_t count)
+{
+ int i;
+
+ for (i = 0; i < count; i++)
+ snd_soc_unregister_dai(&dai[i]);
+}
+EXPORT_SYMBOL_GPL(snd_soc_unregister_dais);
+
+/**
+ * snd_soc_register_platform - Register a platform with the ASoC core
+ *
+ * @param platform platform to register
+ */
+int snd_soc_register_platform(struct snd_soc_platform *platform)
+{
+ if (!platform->name)
+ return -EINVAL;
+
+ INIT_LIST_HEAD(&platform->list);
+
+ mutex_lock(&client_mutex);
+ list_add(&platform->list, &platform_list);
+ snd_soc_instantiate_cards();
+ mutex_unlock(&client_mutex);
+
+ pr_debug("Registered platform '%s'\n", platform->name);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_register_platform);
+
+/**
+ * snd_soc_unregister_platform - Unregister a platform from the ASoC core
+ *
+ * @param platform platform to unregister
+ */
+void snd_soc_unregister_platform(struct snd_soc_platform *platform)
{
- printk(KERN_INFO "ASoC version %s\n", SND_SOC_VERSION);
+ mutex_lock(&client_mutex);
+ list_del(&platform->list);
+ mutex_unlock(&client_mutex);
+
+ pr_debug("Unregistered platform '%s'\n", platform->name);
+}
+EXPORT_SYMBOL_GPL(snd_soc_unregister_platform);
+
+/**
+ * snd_soc_register_codec - Register a codec with the ASoC core
+ *
+ * @param codec codec to register
+ */
+int snd_soc_register_codec(struct snd_soc_codec *codec)
+{
+ if (!codec->name)
+ return -EINVAL;
+
+ /* The device should become mandatory over time */
+ if (!codec->dev)
+ printk(KERN_WARNING "No device for codec %s\n", codec->name);
+
+ INIT_LIST_HEAD(&codec->list);
+
+ mutex_lock(&client_mutex);
+ list_add(&codec->list, &codec_list);
+ snd_soc_instantiate_cards();
+ mutex_unlock(&client_mutex);
+
+ pr_debug("Registered codec '%s'\n", codec->name);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_register_codec);
+
+/**
+ * snd_soc_unregister_codec - Unregister a codec from the ASoC core
+ *
+ * @param codec codec to unregister
+ */
+void snd_soc_unregister_codec(struct snd_soc_codec *codec)
+{
+ mutex_lock(&client_mutex);
+ list_del(&codec->list);
+ mutex_unlock(&client_mutex);
+
+ pr_debug("Unregistered codec '%s'\n", codec->name);
+}
+EXPORT_SYMBOL_GPL(snd_soc_unregister_codec);
+
+static int __init snd_soc_init(void)
+{
+#ifdef CONFIG_DEBUG_FS
+ debugfs_root = debugfs_create_dir("asoc", NULL);
+ if (IS_ERR(debugfs_root) || !debugfs_root) {
+ printk(KERN_WARNING
+ "ASoC: Failed to create debugfs directory\n");
+ debugfs_root = NULL;
+ }
+#endif
+
return platform_driver_register(&soc_driver);
}
-static void snd_soc_exit(void)
+static void __exit snd_soc_exit(void)
{
+#ifdef CONFIG_DEBUG_FS
+ debugfs_remove_recursive(debugfs_root);
+#endif
platform_driver_unregister(&soc_driver);
}