From: Mengdong Lin <mengdong.lin@xxxxxxxxxxxxxxx>
Topology can use this to check if a BE link already exists, and create
a new link if not found.
Signed-off-by: Mengdong Lin <mengdong.lin@xxxxxxxxxxxxxxx>
diff --git a/include/sound/soc.h b/include/sound/soc.h
index 4f1c784..d52601a 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -1671,6 +1671,8 @@ int snd_soc_add_dai_link(struct snd_soc_card *card,
struct snd_soc_dai_link *dai_link);
void snd_soc_remove_dai_link(struct snd_soc_card *card,
struct snd_soc_dai_link *dai_link);
+struct snd_soc_dai_link *snd_soc_find_dai_link(struct snd_soc_card *card,
+ int id);
int snd_soc_register_dai(struct snd_soc_component *component,
struct snd_soc_dai_driver *dai_drv);
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index f6f5027..6b1d198 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -972,6 +972,22 @@ struct snd_soc_dai *snd_soc_find_dai(
}
EXPORT_SYMBOL_GPL(snd_soc_find_dai);
+struct snd_soc_dai_link *snd_soc_find_dai_link(
+ struct snd_soc_card *card, int id)
+{
+ struct snd_soc_dai_link *link, *_link;
+
+ lockdep_assert_held(&client_mutex);
+
+ list_for_each_entry_safe(link, _link, &card->dai_link_list, list) {
+ if (link->id == id)
+ return link;
+ }
+
+ return NULL;
+}
+EXPORT_SYMBOL_GPL(snd_soc_find_dai_link);
+
static bool soc_is_dai_link_bound(struct snd_soc_card *card,
struct snd_soc_dai_link *dai_link)
{
--
2.5.0
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