From: Senthilnathan Veppur <senthilnathanx.veppur@xxxxxxxxx>
Like Skylake, we can support 4 channel for DMIC, so add
hw_params and constraints in the bxt-rt298 machine
While at it, also add codec1 pipe for speaker playback.
Signed-off-by: Senthilnathan Veppur <senthilnathanx.veppur@xxxxxxxxx>
Signed-off-by: Vinod Koul <vinod.koul@xxxxxxxxx>
---
sound/soc/intel/boards/bxt_rt298.c | 66 ++++++++++++++++++++++++++++++++++++++
1 file changed, 66 insertions(+)
diff --git a/sound/soc/intel/boards/bxt_rt298.c b/sound/soc/intel/boards/bxt_rt298.c
index f4787515c0ed..9b649b6cc757 100644
--- a/sound/soc/intel/boards/bxt_rt298.c
+++ b/sound/soc/intel/boards/bxt_rt298.c
@@ -33,6 +33,7 @@ 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,
@@ -88,6 +89,7 @@ static const struct snd_soc_dapm_route broxton_rt298_map[] = {
/* CODEC BE connections */
{ "AIF1 Playback", NULL, "ssp5 Tx"},
{ "ssp5 Tx", NULL, "codec0_out"},
+ { "ssp5 Tx", NULL, "codec1_out"},
{ "codec0_in", NULL, "ssp5 Rx" },
{ "ssp5 Rx", NULL, "AIF1 Capture" },
@@ -169,6 +171,55 @@ static struct snd_soc_ops broxton_rt298_ops = {
.hw_params = broxton_rt298_hw_params,
};
+static unsigned int rates[] = {
+ 48000,
+};
+
+static struct snd_pcm_hw_constraint_list constraints_rates = {
+ .count = ARRAY_SIZE(rates),
+ .list = rates,
+ .mask = 0,
+};
+
+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);
+ if (params_channels(params) == 2)
+ channels->min = channels->max = 2;
+ else
+ channels->min = channels->max = 4;
+
+ return 0;
+}
+
+static unsigned int channels_dmic[] = {
+ 2, 4,
+};
+
+static struct snd_pcm_hw_constraint_list constraints_dmic_channels = {
+ .count = ARRAY_SIZE(channels_dmic),
+ .list = channels_dmic,
+ .mask = 0,
+};
+
+static int broxton_dmic_startup(struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+
+ runtime->hw.channels_max = 4;
+ snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
+ &constraints_dmic_channels);
+
+ return snd_pcm_hw_constraint_list(substream->runtime, 0,
+ SNDRV_PCM_HW_PARAM_RATE, &constraints_rates);
+}
+
+static struct snd_soc_ops broxton_dmic_ops = {
+ .startup = broxton_dmic_startup,
+};
+
/* broxton digital audio interface glue - connects codec <--> CPU */
static struct snd_soc_dai_link broxton_rt298_dais[] = {
/* Front End DAI links */
@@ -211,6 +262,20 @@ static struct snd_soc_dai_link broxton_rt298_dais[] = {
.nonatomic = 1,
.dynamic = 1,
},
+ [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]
{
.name = "Bxt HDMI Port1",
@@ -276,6 +341,7 @@ static struct snd_soc_dai_link broxton_rt298_dais[] = {
.codec_name = "dmic-codec",
.codec_dai_name = "dmic-hifi",
.platform_name = "0000:00:0e.0",
+ .be_hw_params_fixup = broxton_dmic_fixup,
.ignore_suspend = 1,
.dpcm_capture = 1,
.no_pcm = 1,
--
1.9.1
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