ASoC: topology: Set the link ID when creating a FE DAI link

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

diff --git a/include/uapi/sound/asoc.h b/include/uapi/sound/asoc.h
index db86b44..e4701a3 100644 (file)
--- a/include/uapi/sound/asoc.h
+++ b/include/uapi/sound/asoc.h
@@ -423,7 +423,7 @@ 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 (file)
--- 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);