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ASoC: Add snd_soc_{add, remove}_platform 

snd_soc_{add,remove}_platform are similar to snd_soc_register_platform and
snd_soc_unregister_platform with the difference that they won't allocate and
free the snd_soc_platform structure.

Also add snd_soc_lookup_platform which looks up a platform by the device it has
been registered for.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Tested-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Lars-Peter Clausen 2013-04-15 19:19:49 +02:00 committed by Mark Brown
parent 8b1b054f6b
commit 71a45cda44
2 changed files with 67 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
include/sound/soc.h
View File

@ -373,6 +373,10 @@ int snd_soc_poweroff(struct device *dev);
int snd_soc_register_platform(struct device *dev,
const struct snd_soc_platform_driver *platform_drv);
void snd_soc_unregister_platform(struct device *dev);
int snd_soc_add_platform(struct device *dev, struct snd_soc_platform *platform,
const struct snd_soc_platform_driver *platform_drv);
void snd_soc_remove_platform(struct snd_soc_platform *platform);
struct snd_soc_platform *snd_soc_lookup_platform(struct device *dev);
int snd_soc_register_codec(struct device *dev,
const struct snd_soc_codec_driver *codec_drv,
struct snd_soc_dai_driver *dai_drv, int num_dai);

87
sound/soc/soc-core.c
View File

@ -3901,21 +3901,14 @@ void snd_soc_unregister_dais(struct device *dev, size_t count)
EXPORT_SYMBOL_GPL(snd_soc_unregister_dais);
/**
* snd_soc_register_platform - Register a platform with the ASoC core
*
* @platform: platform to register
* snd_soc_add_platform - Add a platform to the ASoC core
* @dev: The parent device for the platform
* @platform: The platform to add
* @platform_driver: The driver for the platform
*/
int snd_soc_register_platform(struct device *dev,
int snd_soc_add_platform(struct device *dev, struct snd_soc_platform *platform,
const struct snd_soc_platform_driver *platform_drv)
{
struct snd_soc_platform *platform;
dev_dbg(dev, "ASoC: platform register %s\n", dev_name(dev));
platform = kzalloc(sizeof(struct snd_soc_platform), GFP_KERNEL);
if (platform == NULL)
return -ENOMEM;
/* create platform component name */
platform->name = fmt_single_name(dev, &platform->id);
if (platform->name == NULL) {
@ -3938,8 +3931,62 @@ int snd_soc_register_platform(struct device *dev,
return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_add_platform);
/**
* snd_soc_register_platform - Register a platform with the ASoC core
*
* @platform: platform to register
*/
int snd_soc_register_platform(struct device *dev,
const struct snd_soc_platform_driver *platform_drv)
{
struct snd_soc_platform *platform;
int ret;
dev_dbg(dev, "ASoC: platform register %s\n", dev_name(dev));
platform = kzalloc(sizeof(struct snd_soc_platform), GFP_KERNEL);
if (platform == NULL)
return -ENOMEM;
ret = snd_soc_add_platform(dev, platform, platform_drv);
if (ret)
kfree(platform);
return ret;
}
EXPORT_SYMBOL_GPL(snd_soc_register_platform);
/**
* snd_soc_remove_platform - Remove a platform from the ASoC core
* @platform: the platform to remove
*/
void snd_soc_remove_platform(struct snd_soc_platform *platform)
{
mutex_lock(&client_mutex);
list_del(&platform->list);
mutex_unlock(&client_mutex);
dev_dbg(platform->dev, "ASoC: Unregistered platform '%s'\n",
platform->name);
kfree(platform->name);
}
EXPORT_SYMBOL_GPL(snd_soc_remove_platform);
struct snd_soc_platform *snd_soc_lookup_platform(struct device *dev)
{
struct snd_soc_platform *platform;
list_for_each_entry(platform, &platform_list, list) {
if (dev == platform->dev)
return platform;
}
return NULL;
}
EXPORT_SYMBOL_GPL(snd_soc_lookup_platform);
/**
* snd_soc_unregister_platform - Unregister a platform from the ASoC core
*
@ -3949,19 +3996,11 @@ void snd_soc_unregister_platform(struct device *dev)
{
struct snd_soc_platform *platform;
list_for_each_entry(platform, &platform_list, list) {
if (dev == platform->dev)
goto found;
}
return;
platform = snd_soc_lookup_platform(dev);
if (!platform)
return;
found:
mutex_lock(&client_mutex);
list_del(&platform->list);
mutex_unlock(&client_mutex);
dev_dbg(dev, "ASoC: Unregistered platform '%s'\n", platform->name);
kfree(platform->name);
snd_soc_remove_platform(platform);
kfree(platform);
}
EXPORT_SYMBOL_GPL(snd_soc_unregister_platform);