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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-05-13 11:53:18 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-05-13 11:53:18 +0200
commit176c2572cd15e40bdbb3cc197d0b409f1f24ab22 (patch)
treec781e2c11ff88f1f0057bd9ccf465de22fc7439e /include/sound
parent720d690e3680d8ae5fcf86f8614c1a10b4ee7605 (diff)
parentc46302ec554c575e79d791c7c84fd4c795e97680 (diff)
Merge tag 'soundwire-streaming' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire into char-misc-next
Vinod writes: soundwire streaming This contains: - Support for SoundWire Streaming - Documentation updates for streaming - Cadence and Intel driver updates for streaming - ASoC API for programming soundwire stream
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