ASoC: mediatek: mt8183-da7219: change supported formats of DL2 and UL1

DL2 and UL1 are for BTSCO.  Provides only 16-bit, mono, 8kHz and
16kHz to userspace.

Signed-off-by: Tzung-Bi Shih <tzungbi@google.com>
Link: https://lore.kernel.org/r/20200213112003.1.Ie5aedb9d34ebfc7f05ceb382bfe346c45331cd63@changeid
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/mediatek/mt8183/mt8183-da7219-max98357.c b/sound/soc/mediatek/mt8183/mt8183-da7219-max98357.c
index 1626541..b52ffed 100644 (file)
--- 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),
        },
        {