[PATCH 4/4] ASoC: mediatek: mt8192-mt6359: add format constraints for RT5682

[Tzung-Bi Shih]

There is only 1 set of I2S in between MT8192 and RT5682.  Adds format
constraints to the corresponding DAI links to make sure the settings
are symmetric.

Signed-off-by: Tzung-Bi Shih <tzungbi at google.com>
---
 .../mt8192/mt8192-mt6359-rt1015-rt5682.c      | 49 +++++++++++++++++++
 1 file changed, 49 insertions(+)

diff --git a/sound/soc/mediatek/mt8192/mt8192-mt6359-rt1015-rt5682.c b/sound/soc/mediatek/mt8192/mt8192-mt6359-rt1015-rt5682.c
index f4b09672af8f..a606133951b7 100644
--- a/sound/soc/mediatek/mt8192/mt8192-mt6359-rt1015-rt5682.c
+++ b/sound/soc/mediatek/mt8192/mt8192-mt6359-rt1015-rt5682.c
@@ -406,6 +406,53 @@ static const struct snd_soc_ops mt8192_mt6359_capture1_ops = {
 	.startup = mt8192_mt6359_cap1_startup,
 };
 
+static int
+mt8192_mt6359_rt5682_startup(struct snd_pcm_substream *substream)
+{
+	static const unsigned int channels[] = {
+		1, 2
+	};
+	static const struct snd_pcm_hw_constraint_list constraints_channels = {
+		.count = ARRAY_SIZE(channels),
+		.list = channels,
+		.mask = 0,
+	};
+	static const unsigned int rates[] = {
+		48000
+	};
+	static const struct snd_pcm_hw_constraint_list constraints_rates = {
+		.count = ARRAY_SIZE(rates),
+		.list  = rates,
+		.mask = 0,
+	};
+
+	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	int ret;
+
+	ret = snd_pcm_hw_constraint_list(runtime, 0,
+					 SNDRV_PCM_HW_PARAM_CHANNELS,
+					 &constraints_channels);
+	if (ret < 0) {
+		dev_err(rtd->dev, "hw_constraint_list channels failed\n");
+		return ret;
+	}
+
+	ret = snd_pcm_hw_constraint_list(runtime, 0,
+					 SNDRV_PCM_HW_PARAM_RATE,
+					 &constraints_rates);
+	if (ret < 0) {
+		dev_err(rtd->dev, "hw_constraint_list rate failed\n");
+		return ret;
+	}
+
+	return 0;
+}
+
+static const struct snd_soc_ops mt8192_mt6359_rt5682_ops = {
+	.startup = mt8192_mt6359_rt5682_startup,
+};
+
 /* FE */
 SND_SOC_DAILINK_DEFS(playback1,
 		     DAILINK_COMP_ARRAY(COMP_CPU("DL1")),
@@ -653,6 +700,7 @@ static struct snd_soc_dai_link mt8192_mt6359_dai_links[] = {
 			    SND_SOC_DPCM_TRIGGER_PRE},
 		.dynamic = 1,
 		.dpcm_playback = 1,
+		.ops = &mt8192_mt6359_rt5682_ops,
 		SND_SOC_DAILINK_REG(playback3),
 	},
 	{
@@ -726,6 +774,7 @@ static struct snd_soc_dai_link mt8192_mt6359_dai_links[] = {
 			    SND_SOC_DPCM_TRIGGER_PRE},
 		.dynamic = 1,
 		.dpcm_capture = 1,
+		.ops = &mt8192_mt6359_rt5682_ops,
 		SND_SOC_DAILINK_REG(capture2),
 	},
 	{
-- 
2.30.0.280.ga3ce27912f-goog