ASoC: mediatek: mt8183-da7219: set playback and capture constraints

Sets playback and capture constraints to S16_LE, stereo, 48kHz.
Signed-off-by: Tzung-Bi Shih <tzungbi@google.com>
Link: https://lore.kernel.org/r/20200623055130.159718-1-tzungbi@google.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/mediatek/mt8183/mt8183-da7219-max98357.c

@@ -119,6 +119,46 @@ static int mt8183_i2s_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
 	return 0;
 }
 
+static int
+mt8183_da7219_max98357_startup(
+	struct snd_pcm_substream *substream)
+{
+	static const unsigned int rates[] = {
+		48000,
+	};
+	static const struct snd_pcm_hw_constraint_list constraints_rates = {
+		.count = ARRAY_SIZE(rates),
+		.list  = rates,
+		.mask = 0,
+	};
+	static const unsigned int channels[] = {
+		2,
+	};
+	static const struct snd_pcm_hw_constraint_list constraints_channels = {
+		.count = ARRAY_SIZE(channels),
+		.list = channels,
+		.mask = 0,
+	};
+
+	struct snd_pcm_runtime *runtime = substream->runtime;
+
+	snd_pcm_hw_constraint_list(runtime, 0,
+			SNDRV_PCM_HW_PARAM_RATE, &constraints_rates);
+	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);
+
+	return 0;
+}
+
+static const struct snd_soc_ops mt8183_da7219_max98357_ops = {
+	.startup = mt8183_da7219_max98357_startup,
+};
+
 static int
 mt8183_da7219_max98357_bt_sco_startup(
 	struct snd_pcm_substream *substream)
@@ -256,6 +296,7 @@ static struct snd_soc_dai_link mt8183_da7219_max98357_dai_links[] = {
 			    SND_SOC_DPCM_TRIGGER_PRE},
 		.dynamic = 1,
 		.dpcm_playback = 1,
+		.ops = &mt8183_da7219_max98357_ops,
 		SND_SOC_DAILINK_REG(playback1),
 	},
 	{
@@ -303,6 +344,7 @@ static struct snd_soc_dai_link mt8183_da7219_max98357_dai_links[] = {
 			    SND_SOC_DPCM_TRIGGER_PRE},
 		.dynamic = 1,
 		.dpcm_capture = 1,
+		.ops = &mt8183_da7219_max98357_ops,
 		SND_SOC_DAILINK_REG(capture3),
 	},
 	{