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ASoC: core - Add API call to register platform kcontrols. 

In preparation for Dynamic PCM (AKA DSP) support.

Allow platform drivers to register kcontrols.

Signed-off-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Liam Girdwood 2011-07-04 22:10:51 +01:00 committed by Mark Brown
parent 8a27bd9a33
commit a491a5c84f
2 changed files with 32 additions and 0 deletions
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2
include/sound/soc.h
View File

@ -368,6 +368,8 @@ struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
const char *prefix);
int snd_soc_add_controls(struct snd_soc_codec *codec,
const struct snd_kcontrol_new *controls, int num_controls);
int snd_soc_add_platform_controls(struct snd_soc_platform *platform,
const struct snd_kcontrol_new *controls, int num_controls);
int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo);
int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol,

30
sound/soc/soc-core.c
View File

@ -1948,6 +1948,36 @@ int snd_soc_add_controls(struct snd_soc_codec *codec,
}
EXPORT_SYMBOL_GPL(snd_soc_add_controls);
/**
* snd_soc_add_platform_controls - add an array of controls to a platform.
* Convienience function to add a list of controls.
*
* @platform: platform to add controls to
* @controls: array of controls to add
* @num_controls: number of elements in the array
*
* Return 0 for success, else error.
*/
int snd_soc_add_platform_controls(struct snd_soc_platform *platform,
const struct snd_kcontrol_new *controls, int num_controls)
{
struct snd_card *card = platform->card->snd_card;
int err, i;
for (i = 0; i < num_controls; i++) {
const struct snd_kcontrol_new *control = &controls[i];
err = snd_ctl_add(card, snd_soc_cnew(control, platform,
control->name, NULL));
if (err < 0) {
dev_err(platform->dev, "Failed to add %s %d\n",control->name, err);
return err;
}
}
return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls);
/**
* snd_soc_info_enum_double - enumerated double mixer info callback
* @kcontrol: mixer control