2 files changed, 9 insertions, 0 deletions

diff --git a/include/sound/soc-dai.h b/include/sound/soc-dai.h
index 800c101bb096..c42864b34581 100644
--- a/include/sound/soc-dai.h
+++ b/include/sound/soc-dai.h
@@ -123,6 +123,8 @@ int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate);
 int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute,
                              int direction);
 
+int snd_soc_dai_is_dummy(struct snd_soc_dai *dai);
+
 struct snd_soc_dai_ops {
         /*
          * DAI clocking configuration, all optional.
diff --git a/sound/soc/soc-utils.c b/sound/soc/soc-utils.c
index 5e633659c1b3..d14bdb3c52df 100644
--- a/sound/soc/soc-utils.c
+++ b/sound/soc/soc-utils.c
@@ -123,6 +123,13 @@ static struct snd_soc_dai_driver dummy_dai = {
          },
 };
 
+int snd_soc_dai_is_dummy(struct snd_soc_dai *dai)
+{
+        if (dai->driver == &dummy_dai)
+                return 1;
+        return 0;
+}
+
 static int snd_soc_dummy_probe(struct platform_device *pdev)
 {
         int ret;