ASoC: simple-card-utils: add asoc_simple_card_canonicalize_dailink()

simple-card is assuming that sometimes platform and cpu are same.
This patch makes this method simple style standard.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 13 insertions, 0 deletions

diff --git a/sound/soc/generic/simple-card-utils.c b/sound/soc/generic/simple-card-utils.c
index 33abe1f7014e..189eadddfad3 100644
--- a/sound/soc/generic/simple-card-utils.c
+++ b/sound/soc/generic/simple-card-utils.c
@@ -193,6 +193,19 @@ int asoc_simple_card_init_dai(struct snd_soc_dai *dai,
 }
 EXPORT_SYMBOL_GPL(asoc_simple_card_init_dai);
 
+int asoc_simple_card_canonicalize_dailink(struct snd_soc_dai_link *dai_link)
+{
+        if (!dai_link->cpu_dai_name || !dai_link->codec_dai_name)
+                return -EINVAL;
+
+        /* Assumes platform == cpu */
+        if (!dai_link->platform_of_node)
+                dai_link->platform_of_node = dai_link->cpu_of_node;
+
+        return 0;
+}
+EXPORT_SYMBOL_GPL(asoc_simple_card_canonicalize_dailink);
+
 /* Module information */
 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
 MODULE_DESCRIPTION("ALSA SoC Simple Card Utils");