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ASoC: wcd934x: Add API to enable standalone micbias

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Add an API in wcd934x codec driver to enable
standalone micbias. This API can be used to enable
micbias even without an active audio capture session.

CRs-fixed: 1062152
Change-Id: I98074071546c053ce3be733602adeff23d6b4b72
Signed-off-by: Phani Kumar Uppalapati <phaniu@codeaurora.org>
This commit is contained in:
Phani Kumar Uppalapati 2016-09-01 23:54:28 -07:00
parent ab26d09879
commit e6f1a2c153
1 changed files with 52 additions and 0 deletions
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52
sound/soc/codecs/wcd934x/wcd934x.c
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@ -3296,6 +3296,58 @@ static int __tavil_codec_enable_micbias(struct snd_soc_dapm_widget *w,
return 0;
}
/*
* tavil_codec_enable_standalone_micbias - enable micbias standalone
* @codec: pointer to codec instance
* @micb_num: number of micbias to be enabled
* @enable: true to enable micbias or false to disable
*
* This function is used to enable micbias (1, 2, 3 or 4) during
* standalone independent of whether TX use-case is running or not
*
* Return: error code in case of failure or 0 for success
*/
int tavil_codec_enable_standalone_micbias(struct snd_soc_codec *codec,
int micb_num,
bool enable)
{
const char * const micb_names[] = {
DAPM_MICBIAS1_STANDALONE, DAPM_MICBIAS2_STANDALONE,
DAPM_MICBIAS3_STANDALONE, DAPM_MICBIAS4_STANDALONE
};
int micb_index = micb_num - 1;
int rc;
if (!codec) {
pr_err("%s: Codec memory is NULL\n", __func__);
return -EINVAL;
}
if ((micb_index < 0) || (micb_index > TAVIL_MAX_MICBIAS - 1)) {
dev_err(codec->dev, "%s: Invalid micbias index, micb_ind:%d\n",
__func__, micb_index);
return -EINVAL;
}
if (enable)
rc = snd_soc_dapm_force_enable_pin_unlocked(
snd_soc_codec_get_dapm(codec),
micb_names[micb_index]);
else
rc = snd_soc_dapm_disable_pin_unlocked(
snd_soc_codec_get_dapm(codec),
micb_names[micb_index]);
if (!rc)
snd_soc_dapm_sync(snd_soc_codec_get_dapm(codec));
else
dev_err(codec->dev, "%s: micbias%d force %s pin failed\n",
__func__, micb_num, (enable ? "enable" : "disable"));
return rc;
}
EXPORT_SYMBOL(tavil_codec_enable_standalone_micbias);
static int tavil_codec_force_enable_micbias(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol,
int event)