DL2 and UL1 are for BTSCO. Provides only 16-bit, mono, 8kHz and
16kHz to userspace.
Signed-off-by: Tzung-Bi Shih <tzungbi@xxxxxxxxxx>
---
.../mediatek/mt8183/mt8183-da7219-max98357.c | 42 +++++++++++++++++++
1 file changed, 42 insertions(+)
diff --git a/sound/soc/mediatek/mt8183/mt8183-da7219-max98357.c b/sound/soc/mediatek/mt8183/mt8183-da7219-max98357.c
index c65493721e90..b7d4bfd04b37 100644
--- a/sound/soc/mediatek/mt8183/mt8183-da7219-max98357.c
+++ b/sound/soc/mediatek/mt8183/mt8183-da7219-max98357.c
@@ -116,6 +116,46 @@ static int mt8183_i2s_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
return 0;
}
+static int
+mt8183_da7219_max98357_bt_sco_startup(
+ struct snd_pcm_substream *substream)
+{
+ static const unsigned int rates[] = {
+ 8000, 16000
+ };
+ static const struct snd_pcm_hw_constraint_list constraints_rates = {
+ .count = ARRAY_SIZE(rates),
+ .list = rates,
+ .mask = 0,
+ };
+ static const unsigned int channels[] = {
+ 1,
+ };
+ 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 = 1;
+ 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_bt_sco_ops = {
+ .startup = mt8183_da7219_max98357_bt_sco_startup,
+};
+
/* FE */
SND_SOC_DAILINK_DEFS(playback1,
DAILINK_COMP_ARRAY(COMP_CPU("DL1")),
@@ -222,6 +262,7 @@ 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_bt_sco_ops,
SND_SOC_DAILINK_REG(playback2),
},
{
@@ -240,6 +281,7 @@ 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_bt_sco_ops,
SND_SOC_DAILINK_REG(capture1),
},
{
--
2.25.0.341.g760bfbb309-goog
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