diff options
| author | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2008-12-03 19:40:30 +0000 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2008-12-09 10:49:27 +0000 |
| commit | 12a48a8c0087ba39d926cf1d63938ccbdb9752c3 (patch) | |
| tree | 4fc400e27b9f524a908ec24b854131c435be2722 | |
| parent | 3f4b783cfdebb559814690572041a17bc9744cf3 (diff) | |
| download | linux-12a48a8c0087ba39d926cf1d63938ccbdb9752c3.tar.bz2 | |
ASoC: Add platform registration API
ASoC v2 allows platform drivers to instantiate independantly of the
overall ASoC card. This API allows drivers to notify the core when
they are registered.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
| -rw-r--r-- | include/sound/soc.h | 5 | ||||
| -rw-r--r-- | sound/soc/soc-core.c | 38 |
2 files changed, 43 insertions, 0 deletions
diff --git a/include/sound/soc.h b/include/sound/soc.h index 4a578b5d855c..ce3661d07c24 100644 --- a/include/sound/soc.h +++ b/include/sound/soc.h @@ -149,6 +149,7 @@ struct snd_soc_ops; struct snd_soc_dai_mode; struct snd_soc_pcm_runtime; struct snd_soc_dai; +struct snd_soc_platform; struct snd_soc_codec; struct soc_enum; struct snd_soc_ac97_ops; @@ -158,6 +159,9 @@ typedef int (*hw_read_t)(void *,char* ,int); extern struct snd_ac97_bus_ops soc_ac97_ops; +int snd_soc_register_platform(struct snd_soc_platform *platform); +void snd_soc_unregister_platform(struct snd_soc_platform *platform); + /* pcm <-> DAI connect */ void snd_soc_free_pcms(struct snd_soc_device *socdev); int snd_soc_new_pcms(struct snd_soc_device *socdev, int idx, const char *xid); @@ -296,6 +300,7 @@ struct snd_soc_codec_device { /* SoC platform interface */ struct snd_soc_platform { char *name; + struct list_head list; int (*probe)(struct platform_device *pdev); int (*remove)(struct platform_device *pdev); diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index 03460b068f1e..ffae370b45df 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -46,6 +46,7 @@ static struct dentry *debugfs_root; static DEFINE_MUTEX(client_mutex); static LIST_HEAD(card_list); static LIST_HEAD(dai_list); +static LIST_HEAD(platform_list); static int snd_soc_register_card(struct snd_soc_card *card); static int snd_soc_unregister_card(struct snd_soc_card *card); @@ -2102,6 +2103,43 @@ void snd_soc_unregister_dais(struct snd_soc_dai *dai, size_t count) } 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); + 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) +{ + 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); + static int __devinit snd_soc_init(void) { #ifdef CONFIG_DEBUG_FS |