ASoC: soc-utils: add snd_soc_dlc_is_dummy()

We have snd_soc_xxx_is_dummy() functions, but not for dlc.
Let's add it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://patch.msgid.link/87cydc8vup.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/include/sound/soc.h b/include/sound/soc.h
index 952ed77b8c87fb8164c27f052d8abd9592ead193..21903984af49d3fc39e3a47de0ef3f96b1c5e166 100644 (file)
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -935,7 +935,7 @@ snd_soc_link_to_platform(struct snd_soc_dai_link *link, int n) {
 
 extern struct snd_soc_dai_link_component null_dailink_component[0];
 extern struct snd_soc_dai_link_component snd_soc_dummy_dlc;
-
+int snd_soc_dlc_is_dummy(struct snd_soc_dai_link_component *dlc);
 
 struct snd_soc_codec_conf {
        /*

diff --git a/sound/soc/soc-utils.c b/sound/soc/soc-utils.c
index 5e3e4f14c3927d7c7681e516c4416c201be84319..a1bcc852a6de0bc5b5280b74899e87c73d8fd357 100644 (file)
--- a/sound/soc/soc-utils.c
+++ b/sound/soc/soc-utils.c
@@ -262,6 +262,19 @@ struct snd_soc_dai_link_component snd_soc_dummy_dlc = {
 };
 EXPORT_SYMBOL_GPL(snd_soc_dummy_dlc);
 
+int snd_soc_dlc_is_dummy(struct snd_soc_dai_link_component *dlc)
+{
+       if (dlc == &snd_soc_dummy_dlc)
+               return true;
+
+       if (strcmp(dlc->name,     snd_soc_dummy_dlc.name)       == 0 ||
+           strcmp(dlc->dai_name, snd_soc_dummy_dlc.dai_name)   == 0)
+               return true;
+
+       return false;
+}
+EXPORT_SYMBOL_GPL(snd_soc_dlc_is_dummy);
+
 static int snd_soc_dummy_probe(struct faux_device *fdev)
 {
        int ret;