ASoC: Intel: Skylake: Add dai link for DMIC capture

Since in Skylake we support another DAI for DMIC quad capture,
add a dailink for this as well. Also specify constrains for DMIC
FE devices and fixup for DMIC BEs

Signed-off-by: Dharageswari.R <dharageswari.r@intel.com>
Signed-off-by: Jeeja KP <jeeja.kp@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/intel/boards/skl_rt286.c b/sound/soc/intel/boards/skl_rt286.c
index 57333a476136acc34b745fb559421a2310cac770..e4fc8a1ce471cc5f42affb279842619a56c744d9 100644 (file)
--- a/sound/soc/intel/boards/skl_rt286.c
+++ b/sound/soc/intel/boards/skl_rt286.c
@@ -190,6 +190,42 @@ static struct snd_soc_ops skylake_rt286_ops = {
        .hw_params = skylake_rt286_hw_params,
 };
 
+static int skylake_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 = 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 skylake_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 skylake_dmic_ops = {
+       .startup = skylake_dmic_startup,
+};
+
 /* skylake digital audio interface glue - connects codec <--> CPU */
 static struct snd_soc_dai_link skylake_rt286_dais[] = {
        /* Front End DAI links */
@@ -238,6 +274,20 @@ static struct snd_soc_dai_link skylake_rt286_dais[] = {
                .nonatomic = 1,
                .dynamic = 1,
        },
+       {
+               .name = "Skl 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 = "0000:00:1f.3",
+               .init = NULL,
+               .dpcm_capture = 1,
+               .ignore_suspend = 1,
+               .nonatomic = 1,
+               .dynamic = 1,
+               .ops = &skylake_dmic_ops,
+       },
 
        /* Back End DAI links */
        {
@@ -267,6 +317,7 @@ static struct snd_soc_dai_link skylake_rt286_dais[] = {
                .codec_name = "dmic-codec",
                .codec_dai_name = "dmic-hifi",
                .platform_name = "0000:00:1f.3",
+               .be_hw_params_fixup = skylake_dmic_fixup,
                .ignore_suspend = 1,
                .dpcm_capture = 1,
                .no_pcm = 1,