[alsa-devel] [PATCH] ASoC: Mediatek: MT8183: change supported formats of DL2 and UL1
Tzung-Bi Shih
tzungbi at google.com
Mon Apr 8 12:47:28 CEST 2019
DL2 and UL1 are for BTSCO. They should only provide 16-bit, mono,
8kHz and 16kHz to userspace. Change the formats accordingly.
Signed-off-by: Tzung-Bi Shih <tzungbi at google.com>
---
.../mt8183/mt8183-mt6358-ts3a227-max98357.c | 42 +++++++++++++++++++
1 file changed, 42 insertions(+)
diff --git a/sound/soc/mediatek/mt8183/mt8183-mt6358-ts3a227-max98357.c b/sound/soc/mediatek/mt8183/mt8183-mt6358-ts3a227-max98357.c
index 681bedb524f9..4e44e5689d6f 100644
--- a/sound/soc/mediatek/mt8183/mt8183-mt6358-ts3a227-max98357.c
+++ b/sound/soc/mediatek/mt8183/mt8183-mt6358-ts3a227-max98357.c
@@ -69,6 +69,46 @@ mt8183_mt6358_ts3a227_max98357_dapm_routes[] = {
{"IT6505_8CH", NULL, "TDM"},
};
+static int
+mt8183_mt6358_ts3a227_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_mt6358_ts3a227_max98357_bt_sco_ops = {
+ .startup = mt8183_mt6358_ts3a227_max98357_bt_sco_startup,
+};
+
static struct snd_soc_dai_link
mt8183_mt6358_ts3a227_max98357_dai_links[] = {
/* FE */
@@ -93,6 +133,7 @@ mt8183_mt6358_ts3a227_max98357_dai_links[] = {
SND_SOC_DPCM_TRIGGER_PRE},
.dynamic = 1,
.dpcm_playback = 1,
+ .ops = &mt8183_mt6358_ts3a227_max98357_bt_sco_ops,
},
{
.name = "Playback_3",
@@ -115,6 +156,7 @@ mt8183_mt6358_ts3a227_max98357_dai_links[] = {
SND_SOC_DPCM_TRIGGER_PRE},
.dynamic = 1,
.dpcm_capture = 1,
+ .ops = &mt8183_mt6358_ts3a227_max98357_bt_sco_ops,
},
{
.name = "Capture_2",
--
2.21.0.392.gf8f6787159e-goog
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