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ASoC: Add DAI registration API

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Add API calls to register and unregister DAIs with the core.  Currently
these APIs are ineffective.  Since multiple DAIs for a given device are
a common case bulk variants are provided.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Mark Brown 2008-11-30 23:31:24 +00:00
parent c5af3a2e19
commit 9115171a6b
2 changed files with 91 additions and 0 deletions
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8
include/sound/soc-dai.h
View File

@ -100,6 +100,12 @@ struct snd_soc_dai_ops;
struct snd_soc_dai;
struct snd_ac97_bus_ops;
/* Digital Audio Interface registration */
int snd_soc_register_dai(struct snd_soc_dai *dai);
void snd_soc_unregister_dai(struct snd_soc_dai *dai);
int snd_soc_register_dais(struct snd_soc_dai *dai, size_t count);
void snd_soc_unregister_dais(struct snd_soc_dai *dai, size_t count);
/* Digital Audio Interface clocking API.*/
int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
unsigned int freq, int dir);
@ -186,6 +192,8 @@ struct snd_soc_dai {
unsigned int id;
int ac97_control;
struct device *dev;
/* DAI callbacks */
int (*probe)(struct platform_device *pdev,
struct snd_soc_dai *dai);

83
sound/soc/soc-core.c
View File

@ -45,6 +45,7 @@ static struct dentry *debugfs_root;
static DEFINE_MUTEX(client_mutex);
static LIST_HEAD(card_list);
static LIST_HEAD(dai_list);
static int snd_soc_register_card(struct snd_soc_card *card);
static int snd_soc_unregister_card(struct snd_soc_card *card);
@ -2019,6 +2020,88 @@ static int snd_soc_unregister_card(struct snd_soc_card *card)
return 0;
}
/**
* snd_soc_register_dai - Register a DAI with the ASoC core
*
* @param dai DAI to register
*/
int snd_soc_register_dai(struct snd_soc_dai *dai)
{
if (!dai->name)
return -EINVAL;
/* The device should become mandatory over time */
if (!dai->dev)
printk(KERN_WARNING "No device for DAI %s\n", dai->name);
INIT_LIST_HEAD(&dai->list);
mutex_lock(&client_mutex);
list_add(&dai->list, &dai_list);
mutex_unlock(&client_mutex);
pr_debug("Registered DAI '%s'\n", dai->name);
return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_register_dai);
/**
* snd_soc_unregister_dai - Unregister a DAI from the ASoC core
*
* @param dai DAI to unregister
*/
void snd_soc_unregister_dai(struct snd_soc_dai *dai)
{
mutex_lock(&client_mutex);
list_del(&dai->list);
mutex_unlock(&client_mutex);
pr_debug("Unregistered DAI '%s'\n", dai->name);
}
EXPORT_SYMBOL_GPL(snd_soc_unregister_dai);
/**
* snd_soc_register_dais - Register multiple DAIs with the ASoC core
*
* @param dai Array of DAIs to register
* @param count Number of DAIs
*/
int snd_soc_register_dais(struct snd_soc_dai *dai, size_t count)
{
int i, ret;
for (i = 0; i < count; i++) {
ret = snd_soc_register_dai(&dai[i]);
if (ret != 0)
goto err;
}
return 0;
err:
for (i--; i >= 0; i--)
snd_soc_unregister_dai(&dai[i]);
return ret;
}
EXPORT_SYMBOL_GPL(snd_soc_register_dais);
/**
* snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core
*
* @param dai Array of DAIs to unregister
* @param count Number of DAIs
*/
void snd_soc_unregister_dais(struct snd_soc_dai *dai, size_t count)
{
int i;
for (i = 0; i < count; i++)
snd_soc_unregister_dai(&dai[i]);
}
EXPORT_SYMBOL_GPL(snd_soc_unregister_dais);
static int __devinit snd_soc_init(void)
{
#ifdef CONFIG_DEBUG_FS