SoundWire: ASoC interfaces for multi-cpu dais and DisCo helpers

Merge series from Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>:

The first two patches prepare the support of multi-cpu dais for
synchronized playback and capture. We remove an unused set of
prototypes and add a get_sdw_stream() callback prototype currently
missing (the implementation will come later as part of the
synchronized playback)

The last exposes macros used internally, so that they can be reused to
extract information from the _ADR 64-bit values in SOF platform
drivers and related machine drivers.

I think it's simpler if all these simple patches are merged through
the SoundWire tree. With the additional changes to remove the platform
drivers and the merge of interrupt handling, that will result in a
single immutable tag provided to Mark Brown.

Pierre-Louis Bossart (3):
  soundwire: cadence: remove useless prototypes
  ASoC: soc-dai: add get_sdw_stream() callback
  soundwire: add helper macros for devID fields

 drivers/soundwire/bus.c            | 21 +++++----------------
 drivers/soundwire/cadence_master.h |  8 --------
 include/linux/soundwire/sdw.h      | 23 +++++++++++++++++++++++
 include/sound/soc-dai.h            | 21 +++++++++++++++++++++
 4 files changed, 49 insertions(+), 24 deletions(-)

--
2.20.1

include/sound/soc-dai.h

@@ -202,6 +202,8 @@ struct snd_soc_dai_ops {
 
 	int (*set_sdw_stream)(struct snd_soc_dai *dai,
 			void *stream, int direction);
+	void *(*get_sdw_stream)(struct snd_soc_dai *dai, int direction);
+
 	/*
 	 * DAI digital mute - optional.
 	 * Called by soc-core to minimise any pops.
@@ -423,4 +425,23 @@ static inline int snd_soc_dai_set_sdw_stream(struct snd_soc_dai *dai,
 		return -ENOTSUPP;
 }
 
+/**
+ * snd_soc_dai_get_sdw_stream() - Retrieves SDW stream from DAI
+ * @dai: DAI
+ * @direction: Stream direction(Playback/Capture)
+ *
+ * This routine only retrieves that was previously configured
+ * with snd_soc_dai_get_sdw_stream()
+ *
+ * Returns pointer to stream or NULL;
+ */
+static inline void *snd_soc_dai_get_sdw_stream(struct snd_soc_dai *dai,
+					       int direction)
+{
+	if (dai->driver->ops->get_sdw_stream)
+		return dai->driver->ops->get_sdw_stream(dai, direction);
+	else
+		return NULL;
+}
+
 #endif