[alsa-devel] [PATCH 1/2] ASoC: utils: Add internal call to determine if DAI is dummy.

[Liam Girdwood]

Provide a quick way to tell if a DAI is a dummy DAI or a regular DAI.
This is for internal DAPM usage only and is used to determe whether to
insert a DAI link connection into the DAPM graph.

Signed-off-by: Liam Girdwood <liam.r.girdwood at linux.intel.com>
---
 include/sound/soc-dai.h | 2 ++
 sound/soc/soc-utils.c   | 7 +++++++
 2 files changed, 9 insertions(+)

diff --git a/include/sound/soc-dai.h b/include/sound/soc-dai.h
index 243d3b6..71f27c4 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 6ebdfd9..7f22ca3 100644
--- a/sound/soc/soc-utils.c
+++ b/sound/soc/soc-utils.c
@@ -119,6 +119,13 @@ 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;
-- 
1.8.3.2