Add ability to select which of the channels is used, or both, in case
two RT1308 amplifiers are located on the same link.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx>
---
sound/soc/codecs/rt1308-sdw.c | 23 +++++++++++++++++++++++
sound/soc/codecs/rt1308-sdw.h | 2 ++
2 files changed, 25 insertions(+)
diff --git a/sound/soc/codecs/rt1308-sdw.c b/sound/soc/codecs/rt1308-sdw.c
index d930f60cb797..8763192434c4 100644
--- a/sound/soc/codecs/rt1308-sdw.c
+++ b/sound/soc/codecs/rt1308-sdw.c
@@ -507,6 +507,28 @@ static void rt1308_sdw_shutdown(struct snd_pcm_substream *substream,
kfree(stream);
}
+static int rt1308_sdw_set_tdm_slot(struct snd_soc_dai *dai,
+ unsigned int tx_mask,
+ unsigned int rx_mask,
+ int slots, int slot_width)
+{
+ struct snd_soc_component *component = dai->component;
+ struct rt1308_sdw_priv *rt1308 =
+ snd_soc_component_get_drvdata(component);
+
+ if (tx_mask)
+ return -EINVAL;
+
+ if (slots > 2)
+ return -EINVAL;
+
+ rt1308->rx_mask = rx_mask;
+ rt1308->slots = slots;
+ /* slot_width is not used since it's irrelevant for SoundWire */
+
+ return 0;
+}
+
static int rt1308_sdw_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
{
@@ -597,6 +619,7 @@ static const struct snd_soc_dai_ops rt1308_aif_dai_ops = {
.hw_free = rt1308_sdw_pcm_hw_free,
.set_sdw_stream = rt1308_set_sdw_stream,
.shutdown = rt1308_sdw_shutdown,
+ .set_tdm_slot = rt1308_sdw_set_tdm_slot,
};
#define RT1308_STEREO_RATES SNDRV_PCM_RATE_48000
diff --git a/sound/soc/codecs/rt1308-sdw.h b/sound/soc/codecs/rt1308-sdw.h
index c9341e70d6cf..c5ce75666dcc 100644
--- a/sound/soc/codecs/rt1308-sdw.h
+++ b/sound/soc/codecs/rt1308-sdw.h
@@ -160,6 +160,8 @@ struct rt1308_sdw_priv {
struct sdw_bus_params params;
bool hw_init;
bool first_hw_init;
+ int rx_mask;
+ int slots;
};
struct sdw_stream_data {
--
2.20.1
