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ASoC: Add platform registration API

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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>
This commit is contained in:
Mark Brown 2008-12-03 19:40:30 +00:00
parent 3f4b783cfd
commit 12a48a8c00
2 changed files with 43 additions and 0 deletions
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5
include/sound/soc.h
View File

@ -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);

38
sound/soc/soc-core.c
View File

@ -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