Add channel and rate constraints for Refcap and dmiccap devices respectively.

Signed-off-by: Yong Zhi yong.zhi@intel.com --- sound/soc/intel/boards/bxt_da7219_max98357a.c | 63 +++++++++++++++++++++++++++ 1 file changed, 63 insertions(+)

diff --git a/sound/soc/intel/boards/bxt_da7219_max98357a.c b/sound/soc/intel/boards/bxt_da7219_max98357a.c index 3774b11..bb4533c 100644 --- a/sound/soc/intel/boards/bxt_da7219_max98357a.c +++ b/sound/soc/intel/boards/bxt_da7219_max98357a.c @@ -37,6 +37,7 @@ enum { BXT_DPCM_AUDIO_PB = 0, BXT_DPCM_AUDIO_CP, BXT_DPCM_AUDIO_REF_CP, + BXT_DPCM_AUDIO_DMIC_CP, BXT_DPCM_AUDIO_HDMI1_PB, BXT_DPCM_AUDIO_HDMI2_PB, BXT_DPCM_AUDIO_HDMI3_PB, @@ -252,6 +253,52 @@ static struct snd_soc_ops broxton_da7219_ops = { .hw_free = broxton_da7219_hw_free, };

+static int broxton_dmic_fixup(struct snd_soc_pcm_runtime *rtd, + struct snd_pcm_hw_params *params) +{ + struct snd_interval *channels = hw_param_interval(params, + SNDRV_PCM_HW_PARAM_CHANNELS); + channels->min = channels->max = DUAL_CHANNEL; + + return 0; +} + +static int broxton_dmic_startup(struct snd_pcm_substream *substream) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + + runtime->hw.channels_max = DUAL_CHANNEL; + snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, + &constraints_channels); + + return snd_pcm_hw_constraint_list(substream->runtime, 0, + SNDRV_PCM_HW_PARAM_RATE, &constraints_rates); +} + +static const struct snd_soc_ops broxton_dmic_ops = { + .startup = broxton_dmic_startup, +}; + +static const unsigned int rates_16000[] = { + 16000, +}; + +static const struct snd_pcm_hw_constraint_list constraints_16000 = { + .count = ARRAY_SIZE(rates_16000), + .list = rates_16000, +}; + +static int broxton_refcap_startup(struct snd_pcm_substream *substream) +{ + return snd_pcm_hw_constraint_list(substream->runtime, 0, + SNDRV_PCM_HW_PARAM_RATE, + &constraints_16000); +}; + +static struct snd_soc_ops broxton_refcap_ops = { + .startup = broxton_refcap_startup, +}; + /* broxton digital audio interface glue - connects codec <--> CPU */ static struct snd_soc_dai_link broxton_dais[] = { /* Front End DAI links */ @@ -299,6 +346,21 @@ static struct snd_soc_dai_link broxton_dais[] = { .ignore_suspend = 1, .nonatomic = 1, .dynamic = 1, + .ops = &broxton_refcap_ops, + }, + [BXT_DPCM_AUDIO_DMIC_CP] + { + .name = "Bxt Audio DMIC cap", + .stream_name = "dmiccap", + .cpu_dai_name = "DMIC Pin", + .codec_name = "snd-soc-dummy", + .codec_dai_name = "snd-soc-dummy-dai", + .platform_name = "0000:00:0e.0", + .init = NULL, + .dpcm_capture = 1, + .nonatomic = 1, + .dynamic = 1, + .ops = &broxton_dmic_ops, }, [BXT_DPCM_AUDIO_HDMI1_PB] { @@ -382,6 +444,7 @@ static struct snd_soc_dai_link broxton_dais[] = { .codec_dai_name = "dmic-hifi", .platform_name = "0000:00:0e.0", .ignore_suspend = 1, + .be_hw_params_fixup = broxton_dmic_fixup, .dpcm_capture = 1, .no_pcm = 1, },