From: Mengdong Lin <mengdong.lin@xxxxxxxxxxxxxxx>
Topology will set the link's generic id when creating a FE link.
Device drivers can check the id for link specific initialization.
Signed-off-by: Mengdong Lin <mengdong.lin@xxxxxxxxxxxxxxx>
diff --git a/include/uapi/sound/asoc.h b/include/uapi/sound/asoc.h
index e8def0b..fcdf5d7 100644
--- a/include/uapi/sound/asoc.h
+++ b/include/uapi/sound/asoc.h
@@ -480,7 +480,7 @@ struct snd_soc_tplg_pcm {
__le32 size; /* in bytes of this structure */
char pcm_name[SNDRV_CTL_ELEM_ID_NAME_MAXLEN];
char dai_name[SNDRV_CTL_ELEM_ID_NAME_MAXLEN];
- __le32 pcm_id; /* unique ID - used to match */
+ __le32 pcm_id; /* unique ID - used to match with DAI link */
__le32 dai_id; /* unique ID - used to match */
__le32 playback; /* supports playback mode */
__le32 capture; /* supports capture mode */
diff --git a/sound/soc/soc-topology.c b/sound/soc/soc-topology.c
index 1cf94d7..bdbfcef 100644
--- a/sound/soc/soc-topology.c
+++ b/sound/soc/soc-topology.c
@@ -1598,6 +1598,7 @@ static int soc_tplg_link_create(struct soc_tplg *tplg,
link->name = pcm->pcm_name;
link->stream_name = pcm->pcm_name;
+ link->id = pcm->pcm_id;
/* pass control to component driver for optional further init */
ret = soc_tplg_dai_link_load(tplg, link);
--
2.5.0
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