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ASoC: Add SoundWire stream programming interface 

SoundWire stream needs to be propagated to all the DAIs(cpu, codec).
So, add a snd_soc_dai_set_sdw_stream() API for the same.

Signed-off-by: Shreyas NC <shreyas.nc@intel.com>
Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Shreyas NC 2018-04-26 18:38:38 +05:30 committed by Vinod Koul
parent 5c3eb9f7bd
commit 97349b6051
1 changed files with 23 additions and 0 deletions
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23
include/sound/soc-dai.h
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@ -170,6 +170,8 @@ struct snd_soc_dai_ops {
unsigned int rx_num, unsigned int *rx_slot);
int (*set_tristate)(struct snd_soc_dai *dai, int tristate);
int (*set_sdw_stream)(struct snd_soc_dai *dai,
void *stream, int direction);
/*
* DAI digital mute - optional.
* Called by soc-core to minimise any pops.
@ -358,4 +360,25 @@ static inline void *snd_soc_dai_get_drvdata(struct snd_soc_dai *dai)
return dev_get_drvdata(dai->dev);
}
/**
* snd_soc_dai_set_sdw_stream() - Configures a DAI for SDW stream operation
* @dai: DAI
* @stream: STREAM
* @direction: Stream direction(Playback/Capture)
* SoundWire subsystem doesn't have a notion of direction and we reuse
* the ASoC stream direction to configure sink/source ports.
* Playback maps to source ports and Capture for sink ports.
*
* This should be invoked with NULL to clear the stream set previously.
* Returns 0 on success, a negative error code otherwise.
*/
static inline int snd_soc_dai_set_sdw_stream(struct snd_soc_dai *dai,
void *stream, int direction)
{
if (dai->driver->ops->set_sdw_stream)
return dai->driver->ops->set_sdw_stream(dai, stream, direction);
else
return -ENOTSUPP;
}
#endif