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ASoC: rt1308-sdw: add set_tdm_slot() support

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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@linux.intel.com>
Link: https://lore.kernel.org/r/20200325212905.28145-2-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Pierre-Louis Bossart 2020-03-25 16:29:04 -05:00 committed by Mark Brown
parent 633fddee73
commit f7cc9b996e
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
2 changed files with 25 additions and 0 deletions
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23
sound/soc/codecs/rt1308-sdw.c
View File

@ -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

2
sound/soc/codecs/rt1308-sdw.h
View File

@ -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 {