ASoC: Intel: Skylake: Constrain the audio devices
In ref configuration for Skylake, we support only 16bit, 48KHz,
stereo audio, so specify these as constrains for the devices
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 e6af484..9c67e05 100644
--- a/sound/soc/intel/boards/skl_rt286.c
+++ b/sound/soc/intel/boards/skl_rt286.c
@@ -104,6 +104,53 @@
return 0;
}
+static unsigned int rates[] = {
+ 48000,
+};
+
+static struct snd_pcm_hw_constraint_list constraints_rates = {
+ .count = ARRAY_SIZE(rates),
+ .list = rates,
+ .mask = 0,
+};
+
+static unsigned int channels[] = {
+ 2,
+};
+
+static struct snd_pcm_hw_constraint_list constraints_channels = {
+ .count = ARRAY_SIZE(channels),
+ .list = channels,
+ .mask = 0,
+};
+
+static int skl_fe_startup(struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+
+ /*
+ * on this platform for PCM device we support,
+ * 48Khz
+ * stereo
+ * 16 bit audio
+ */
+
+ runtime->hw.channels_max = 2;
+ snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
+ &constraints_channels);
+
+ runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE;
+ snd_pcm_hw_constraint_msbits(runtime, 0, 16, 16);
+
+ snd_pcm_hw_constraint_list(runtime, 0,
+ SNDRV_PCM_HW_PARAM_RATE, &constraints_rates);
+
+ return 0;
+}
+
+static const struct snd_soc_ops skylake_rt286_fe_ops = {
+ .startup = skl_fe_startup,
+};
static int skylake_ssp0_fixup(struct snd_soc_pcm_runtime *rtd,
struct snd_pcm_hw_params *params)
@@ -160,6 +207,7 @@
SND_SOC_DPCM_TRIGGER_POST
},
.dpcm_playback = 1,
+ .ops = &skylake_rt286_fe_ops,
},
{
.name = "Skl Audio Capture Port",
@@ -175,6 +223,7 @@
SND_SOC_DPCM_TRIGGER_POST
},
.dpcm_capture = 1,
+ .ops = &skylake_rt286_fe_ops,
},
{
.name = "Skl Audio Reference cap",