[alsa-devel] [PATCH 1/2] ASoC: Intel: Skylake: Add channel constraints for refcap

[Vinod Koul]

On Tue, May 17, 2016 at 09:43:04AM -0700, Yong Zhi wrote:
> Add constraint for ref DMIC to match with the
> topology firmware config.
> 
> Signed-off-by: Yong Zhi <yong.zhi at intel.com>

Both:

Acked-by: Vinod Koul <vinod.koul at intel.com>

> ---
>  sound/soc/intel/boards/skl_nau88l25_max98357a.c | 14 ++++++++++++++
>  1 file changed, 14 insertions(+)
> 
> diff --git a/sound/soc/intel/boards/skl_nau88l25_max98357a.c b/sound/soc/intel/boards/skl_nau88l25_max98357a.c
> index 7cc7251..463f0e5 100644
> --- a/sound/soc/intel/boards/skl_nau88l25_max98357a.c
> +++ b/sound/soc/intel/boards/skl_nau88l25_max98357a.c
> @@ -339,8 +339,22 @@ 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);
> -- 
> 1.9.1
> 

-- 
~Vinod