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ASoC: Intel: Skylake: Use refcap device for mono recording 

Only mono channel is allowed for refcap device.

Signed-off-by: Yong Zhi <yong.zhi@intel.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Yong Zhi 2016-05-17 09:43:05 -07:00 committed by Mark Brown
parent d6c9f6afaf
commit 0c7941a63a
1 changed files with 14 additions and 0 deletions
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14
sound/soc/intel/boards/skl_nau88l25_ssm4567.c
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@ -430,8 +430,22 @@ static struct snd_pcm_hw_constraint_list constraints_16000 = {
.list = rates_16000,
};
static const unsigned int ch_mono[] = {
1,
};
static const struct snd_pcm_hw_constraint_list constraints_refcap = {
.count = ARRAY_SIZE(ch_mono),
.list = ch_mono,
};
static int skylake_refcap_startup(struct snd_pcm_substream *substream)
{
substream->runtime->hw.channels_max = 1;
snd_pcm_hw_constraint_list(substream->runtime, 0,
SNDRV_PCM_HW_PARAM_CHANNELS,
&constraints_refcap);
return snd_pcm_hw_constraint_list(substream->runtime, 0,
SNDRV_PCM_HW_PARAM_RATE,
&constraints_16000);