This patch adds DAPM widgets required to model the internal mixer
of the I2S controller merging audio streams from the primary and
from the secondary PCM interface.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@xxxxxxxxxxx>
---
sound/soc/samsung/i2s.c | 27 ++++++++++++++++++++++++++-
1 file changed, 26 insertions(+), 1 deletion(-)
diff --git a/sound/soc/samsung/i2s.c b/sound/soc/samsung/i2s.c
index 978614673ffb..b435e6226ec2 100644
--- a/sound/soc/samsung/i2s.c
+++ b/sound/soc/samsung/i2s.c
@@ -1116,8 +1116,31 @@ static const struct snd_soc_dai_ops samsung_i2s_dai_ops = {
.delay = i2s_delay,
};
+static const struct snd_soc_dapm_widget samsung_i2s_widgets[] = {
+ /* Backend DAI */
+ SND_SOC_DAPM_AIF_OUT("Mixer DAI TX", NULL, 0, SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_AIF_IN("Mixer DAI RX", NULL, 0, SND_SOC_NOPM, 0, 0),
+
+ /* Playback Mixer */
+ SND_SOC_DAPM_MIXER("Playback Mixer", SND_SOC_NOPM, 0, 0, NULL, 0),
+};
+
+static const struct snd_soc_dapm_route samsung_i2s_dapm_routes[] = {
+ { "Playback Mixer", NULL, "Primary" },
+ { "Playback Mixer", NULL, "Secondary" },
+
+ { "Mixer DAI TX", NULL, "Playback Mixer" },
+ { "Playback Mixer", NULL, "Mixer DAI RX" },
+};
+
static const struct snd_soc_component_driver samsung_i2s_component = {
- .name = "samsung-i2s",
+ .name = "samsung-i2s",
+
+ .dapm_widgets = samsung_i2s_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(samsung_i2s_widgets),
+
+ .dapm_routes = samsung_i2s_dapm_routes,
+ .num_dapm_routes = ARRAY_SIZE(samsung_i2s_dapm_routes),
};
#define SAMSUNG_I2S_FMTS (SNDRV_PCM_FMTBIT_S8 | \
@@ -1129,6 +1152,7 @@ static int i2s_alloc_dais(struct samsung_i2s_priv *priv,
int num_dais)
{
static const char *dai_names[] = { "samsung-i2s", "samsung-i2s-sec" };
+ static const char *stream_names[] = { "Primary", "Secondary" };
struct snd_soc_dai_driver *dai_drv;
struct i2s_dai *dai;
int i;
@@ -1158,6 +1182,7 @@ static int i2s_alloc_dais(struct samsung_i2s_priv *priv,
dai_drv->playback.channels_max = 2;
dai_drv->playback.rates = i2s_dai_data->pcm_rates;
dai_drv->playback.formats = SAMSUNG_I2S_FMTS;
+ dai_drv->playback.stream_name = stream_names[i];
dai_drv->id = i + 1;
dai_drv->name = dai_names[i];
--
2.20.1
