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authorTzung-Bi Shih <tzungbi@google.com>2021-01-25 07:14:53 +0100
committerMark Brown <broonie@kernel.org>2021-01-25 13:53:44 +0100
commit339f6c73d5abe85550a0c962edc8a5df1f2b4273 (patch)
tree4abaf5992ea810d8da84d624bf220d39640f6153 /sound/soc/mediatek/mt8192/mt8192-mt6359-rt1015-rt5682.c
parentASoC: ak4458: correct reset polarity (diff)
downloadlinux-339f6c73d5abe85550a0c962edc8a5df1f2b4273.tar.xz
linux-339f6c73d5abe85550a0c962edc8a5df1f2b4273.zip
ASoC: mediatek: mt8192-mt6359: add format constraints for RT5682
MT8192 determines the I2S clock rates according to the sampling rates. There is only 1 set of I2S in between MT8192 and RT5682. If playing and capturing via RT5682 in different sampling rates, the I2S data will be corrupted. Adds format constraints to the corresponding DAI links to make sure the sampling rates are symmetric. Fixes: 18b13ff23fab ("ASoC: mediatek: mt8192: add machine driver with mt6359, rt1015 and rt5682") Signed-off-by: Tzung-Bi Shih <tzungbi@google.com> Link: https://lore.kernel.org/r/20210125061453.1056535-1-tzungbi@google.com Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/mediatek/mt8192/mt8192-mt6359-rt1015-rt5682.c')
-rw-r--r--sound/soc/mediatek/mt8192/mt8192-mt6359-rt1015-rt5682.c49
1 files changed, 49 insertions, 0 deletions
diff --git a/sound/soc/mediatek/mt8192/mt8192-mt6359-rt1015-rt5682.c b/sound/soc/mediatek/mt8192/mt8192-mt6359-rt1015-rt5682.c
index 716fbb4126b5..ae2c748eb19c 100644
--- a/sound/soc/mediatek/mt8192/mt8192-mt6359-rt1015-rt5682.c
+++ b/sound/soc/mediatek/mt8192/mt8192-mt6359-rt1015-rt5682.c
@@ -401,6 +401,53 @@ static const struct snd_soc_ops mt8192_mt6359_rt1015_rt5682_capture1_ops = {
.startup = mt8192_mt6359_rt1015_rt5682_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")),
@@ -648,6 +695,7 @@ 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),
},
{
@@ -721,6 +769,7 @@ 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),
},
{