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authorShreyas NC <shreyas.nc@intel.com>2018-04-26 18:38:38 +0530
committerVinod Koul <vkoul@kernel.org>2018-05-11 21:47:19 +0530
commit97349b60519ee508d5e93334eb8c3c4b4e0e5faa (patch)
treee732baa5e4a7abd8eda66b4815da2d2692ee309a /include/sound
parent5c3eb9f7bdf1f141e051605b7b4225b1e83820a2 (diff)
downloadblackbird-op-linux-97349b60519ee508d5e93334eb8c3c4b4e0e5faa.tar.gz
blackbird-op-linux-97349b60519ee508d5e93334eb8c3c4b4e0e5faa.zip
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>
Diffstat (limited to 'include/sound')
-rw-r--r--include/sound/soc-dai.h23
1 files changed, 23 insertions, 0 deletions
diff --git a/include/sound/soc-dai.h b/include/sound/soc-dai.h
index 8ad11669e4d8..3ddb575eed54 100644
--- a/include/sound/soc-dai.h
+++ b/include/sound/soc-dai.h
@@ -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
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