linux-kernel - [PATCH] ASoC: mediatek: mt8183-mt6358: set playback and capture constraints

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Date:   Fri, 5 Feb 2021 16:16:52 +0800
From:   Jiaxin Yu <jiaxin.yu@...iatek.com>
To:     <broonie@...nel.org>
CC:     <tiwai@...e.com>, <tzungbi@...gle.com>, <cychiang@...omium.org>,
        <kuninori.morimoto.gx@...esas.com>, <alsa-devel@...a-project.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, Jiaxin Yu <jiaxin.yu@...iatek.com>
Subject: [PATCH] ASoC: mediatek: mt8183-mt6358: set playback and capture constraints

Sets playback and capture constraints to S16_LE, stereo, 48kHz.

Signed-off-by: Jiaxin Yu <jiaxin.yu@...iatek.com>
---
 .../mt8183/mt8183-mt6358-ts3a227-max98357.c        | 41 ++++++++++++++++++++++
 1 file changed, 41 insertions(+)

diff --git a/sound/soc/mediatek/mt8183/mt8183-mt6358-ts3a227-max98357.c b/sound/soc/mediatek/mt8183/mt8183-mt6358-ts3a227-max98357.c
index 3cf8aea..271413e 100644
--- a/sound/soc/mediatek/mt8183/mt8183-mt6358-ts3a227-max98357.c
+++ b/sound/soc/mediatek/mt8183/mt8183-mt6358-ts3a227-max98357.c
@@ -118,6 +118,45 @@ static int mt8183_rt1015_i2s_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
 }
 
 static int
+mt8183_mt6358_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_mt6358_ops = {
+	.startup = mt8183_mt6358_startup,
+};
+
+static int
 mt8183_mt6358_ts3a227_max98357_bt_sco_startup(
 	struct snd_pcm_substream *substream)
 {
@@ -356,6 +395,7 @@ static void mt8183_mt6358_tdm_shutdown(struct snd_pcm_substream *substream)
 			    SND_SOC_DPCM_TRIGGER_PRE},
 		.dynamic = 1,
 		.dpcm_playback = 1,
+		.ops = &mt8183_mt6358_ops,
 		SND_SOC_DAILINK_REG(playback1),
 	},
 	{
@@ -403,6 +443,7 @@ static void mt8183_mt6358_tdm_shutdown(struct snd_pcm_substream *substream)
 			    SND_SOC_DPCM_TRIGGER_PRE},
 		.dynamic = 1,
 		.dpcm_capture = 1,
+		.ops = &mt8183_mt6358_ops,
 		SND_SOC_DAILINK_REG(capture3),
 	},
 	{
-- 
1.8.1.1.dirty