Commit 12a48a8c authored by Mark Brown's avatar Mark Brown
Browse files

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: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent 3f4b783c

include/sound/soc.h

+5 −0
Original line number Diff line number Diff line
@@ -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);

sound/soc/soc-core.c

+38 −0
Original line number Diff line number Diff line
@@ -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