From: Mengdong Lin <mengdong.lin@xxxxxxxxxxxxxxx>
When a new DAI link is added, the ASoC core will call this ops to notify
a machine driver for extra intialization.
Signed-off-by: Mengdong Lin <mengdong.lin@xxxxxxxxxxxxxxx>
diff --git a/include/sound/soc.h b/include/sound/soc.h
index 60e5fda..9a0e0e8 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -1103,6 +1103,9 @@ struct snd_soc_card {
struct snd_soc_dapm_context *dapm,
enum snd_soc_bias_level level);
+ int (*add_dai_link)(struct snd_soc_card *,
+ struct snd_soc_dai_link *link);
+
long pmdown_time;
/* CPU <--> Codec DAI links */
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index c855e30..24e0c50 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -1243,6 +1243,10 @@ static int soc_init_dai_link(struct snd_soc_card *card,
void snd_soc_add_dai_link(struct snd_soc_card *card,
struct snd_soc_dai_link *dai_link)
{
+ /* Notify the machine driver for extra initialization. */
+ if (card && card->add_dai_link)
+ card->add_dai_link(card, dai_link);
+
lockdep_assert_held(&client_mutex);
list_add_tail(&dai_link->list, &card->dai_link_list);
card->num_dai_links++;
--
1.9.1
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