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authorYong Zhi <yong.zhi@intel.com>2016-09-26 13:02:29 -0700
committerMark Brown <broonie@kernel.org>2016-09-26 14:05:29 -0700
commit43c02ede76a60de38504f4f4fd6042f677be093a (patch)
tree75ca54d38b52ec77fb2d55df033fd01fd822707d /sound
parent88b456b0f4a2a4c10c141a7d83113a8ce2164463 (diff)
downloadlinux-43c02ede76a60de38504f4f4fd6042f677be093a.tar.bz2
ASoC: Intel: Add DMIC channel constraint for bxt machine
Add channel and rate constraints for Refcap and dmiccap devices respectively. Signed-off-by: Yong Zhi <yong.zhi@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound')
-rw-r--r--sound/soc/intel/boards/bxt_da7219_max98357a.c63
1 files changed, 63 insertions, 0 deletions
diff --git a/sound/soc/intel/boards/bxt_da7219_max98357a.c b/sound/soc/intel/boards/bxt_da7219_max98357a.c
index 3774b117d365..bb4533c305c7 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,
},