diff options
author | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2008-11-30 23:31:24 (GMT) |
---|---|---|
committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2008-12-09 10:49:26 (GMT) |
commit | 9115171a6b79b6b4d5c6697f123556b6efc37f1f (patch) | |
tree | 0889dc28a991c27947c5b65f611e2e8f600deb69 /sound/soc | |
parent | c5af3a2e192d333997d1e191f3eba7fd2f869681 (diff) | |
download | linux-fsl-qoriq-9115171a6b79b6b4d5c6697f123556b6efc37f1f.tar.xz |
ASoC: Add DAI registration API
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>
Diffstat (limited to 'sound/soc')
-rw-r--r-- | sound/soc/soc-core.c | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index 44fbd71..03460b0 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -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 |