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ASoC: add snd_soc_register_component()

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Current ASoC has register function for platform/codec/dai/card,
but doesn't have for cpu.
It often produces confusion and fault on ASoC.

As result of ASoC community discussion,
we consider new struct snd_soc_component for CPU/CODEC,
and will switch over to use it.

This patch adds very basic struct snd_soc_component,
and register function for it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Kuninori Morimoto 2013-03-11 18:27:21 -07:00 committed by Mark Brown
parent f6161aa153
commit 030e79f658
2 changed files with 96 additions and 0 deletions
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19
include/sound/soc.h
View File

@ -324,6 +324,8 @@ struct snd_soc_dai_link;
struct snd_soc_platform_driver;
struct snd_soc_codec;
struct snd_soc_codec_driver;
struct snd_soc_component;
struct snd_soc_component_driver;
struct soc_enum;
struct snd_soc_jack;
struct snd_soc_jack_zone;
@ -377,6 +379,10 @@ 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);
void snd_soc_unregister_codec(struct device *dev);
int snd_soc_register_component(struct device *dev,
const struct snd_soc_component_driver *cmpnt_drv,
struct snd_soc_dai_driver *dai_drv, int num_dai);
void snd_soc_unregister_component(struct device *dev);
int snd_soc_codec_volatile_register(struct snd_soc_codec *codec,
unsigned int reg);
int snd_soc_codec_readable_register(struct snd_soc_codec *codec,
@ -841,6 +847,19 @@ struct snd_soc_platform {
#endif
};
struct snd_soc_component_driver {
};
struct snd_soc_component {
const char *name;
int id;
int num_dai;
struct device *dev;
struct list_head list;
const struct snd_soc_component_driver *driver;
};
struct snd_soc_dai_link {
/* config - must be set by machine driver */
const char *name; /* Codec name */

77
sound/soc/soc-core.c
View File

@ -58,6 +58,7 @@ static DEFINE_MUTEX(client_mutex);
static LIST_HEAD(dai_list);
static LIST_HEAD(platform_list);
static LIST_HEAD(codec_list);
static LIST_HEAD(component_list);
/*
* This is a timeout to do a DAPM powerdown after a stream is closed().
@ -4137,6 +4138,82 @@ found:
}
EXPORT_SYMBOL_GPL(snd_soc_unregister_codec);
/**
* snd_soc_register_component - Register a component with the ASoC core
*
*/
int snd_soc_register_component(struct device *dev,
const struct snd_soc_component_driver *cmpnt_drv,
struct snd_soc_dai_driver *dai_drv,
int num_dai)
{
struct snd_soc_component *cmpnt;
int ret;
dev_dbg(dev, "component register %s\n", dev_name(dev));
cmpnt = devm_kzalloc(dev, sizeof(*cmpnt), GFP_KERNEL);
if (!cmpnt) {
dev_err(dev, "ASoC: Failed to allocate memory\n");
return -ENOMEM;
}
cmpnt->name = fmt_single_name(dev, &cmpnt->id);
if (!cmpnt->name) {
dev_err(dev, "ASoC: Failed to simplifying name\n");
return -ENOMEM;
}
cmpnt->dev = dev;
cmpnt->driver = cmpnt_drv;
cmpnt->num_dai = num_dai;
ret = snd_soc_register_dais(dev, dai_drv, num_dai);
if (ret < 0) {
dev_err(dev, "ASoC: Failed to regster DAIs: %d\n", ret);
goto error_component_name;
}
mutex_lock(&client_mutex);
list_add(&cmpnt->list, &component_list);
mutex_unlock(&client_mutex);
dev_dbg(cmpnt->dev, "ASoC: Registered component '%s'\n", cmpnt->name);
return ret;
error_component_name:
kfree(cmpnt->name);
return ret;
}
/**
* snd_soc_unregister_component - Unregister a component from the ASoC core
*
*/
void snd_soc_unregister_component(struct device *dev)
{
struct snd_soc_component *cmpnt;
list_for_each_entry(cmpnt, &component_list, list) {
if (dev == cmpnt->dev)
goto found;
}
return;
found:
snd_soc_unregister_dais(dev, cmpnt->num_dai);
mutex_lock(&client_mutex);
list_del(&cmpnt->list);
mutex_unlock(&client_mutex);
dev_dbg(dev, "ASoC: Unregistered component '%s'\n", cmpnt->name);
kfree(cmpnt->name);
}
/* Retrieve a card's name from device tree */
int snd_soc_of_parse_card_name(struct snd_soc_card *card,
const char *propname)