The refcap capture device supports mono recording only, this patch adds the channel constraints, also change stream_name to "Wake on Voice".
Signed-off-by: Yong Zhi yong.zhi@intel.com --- sound/soc/intel/boards/bxt_da7219_max98357a.c | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-)
diff --git a/sound/soc/intel/boards/bxt_da7219_max98357a.c b/sound/soc/intel/boards/bxt_da7219_max98357a.c index be6e4b4..097a089 100644 --- a/sound/soc/intel/boards/bxt_da7219_max98357a.c +++ b/sound/soc/intel/boards/bxt_da7219_max98357a.c @@ -319,6 +319,15 @@ static const unsigned int rates_16000[] = { 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 const struct snd_pcm_hw_constraint_list constraints_16000 = { .count = ARRAY_SIZE(rates_16000), .list = rates_16000, @@ -326,6 +335,11 @@ static const struct snd_pcm_hw_constraint_list constraints_16000 = {
static int broxton_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); @@ -372,7 +386,7 @@ static struct snd_soc_dai_link broxton_dais[] = { [BXT_DPCM_AUDIO_REF_CP] = { .name = "Bxt Audio Reference cap", - .stream_name = "Refcap", + .stream_name = "Wake on Voice", .cpu_dai_name = "Reference Pin", .codec_name = "snd-soc-dummy", .codec_dai_name = "snd-soc-dummy-dai",