ASoC: topology: ABI - Add sig_bits to stream caps

Kernel struct snd_soc_pcm_stream, SoC PCM stream information, needs this
field. Although current topology users don't configure this, we define it
for future extension.

Signed-off-by: Mengdong Lin <mengdong.lin@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

2 files changed, 2 insertions, 0 deletions

diff --git a/include/uapi/sound/asoc.h b/include/uapi/sound/asoc.h
index f734bea9a032..33d00a4ce656 100644
--- a/include/uapi/sound/asoc.h
+++ b/include/uapi/sound/asoc.h
@@ -257,6 +257,7 @@ struct snd_soc_tplg_stream_caps {
         __le32 period_size_max; /* max period size bytes */
         __le32 buffer_size_min; /* min buffer size bytes */
         __le32 buffer_size_max; /* max buffer size bytes */
+        __le32 sig_bits;        /* number of bits of content */
 } __attribute__((packed));
 
 /*
diff --git a/sound/soc/soc-topology.c b/sound/soc/soc-topology.c
index a9e83a2dd91c..6b05047a4134 100644
--- a/sound/soc/soc-topology.c
+++ b/sound/soc/soc-topology.c
@@ -1556,6 +1556,7 @@ static void set_stream_info(struct snd_soc_pcm_stream *stream,
         stream->rate_min = caps->rate_min;
         stream->rate_max = caps->rate_max;
         stream->formats = caps->formats;
+        stream->sig_bits = caps->sig_bits;
 }
 
 static void set_dai_flags(struct snd_soc_dai_driver *dai_drv,