[10/11] ASoC: simple-card-utils: add asoc_simple_card_canonicalize_cpu()

Commit Message

Kuninori Morimoto June 24, 2016, 1:18 a.m. UTC

From: Kuninori Morimoto <[e-mail]>

simple-card needs remove dai_link->cpu_dai_name if it CPU was
single DAI.
This patch makes this method simple style standard.

Signed-off-by: Kuninori Morimoto <[e-mail]>
---
 include/sound/simple_card_utils.h     |  2 ++
 sound/soc/generic/simple-card-utils.c | 19 +++++++++++++++++++
 2 files changed, 21 insertions(+)

Patch

diff --git a/include/sound/simple_card_utils.h b/include/sound/simple_card_utils.h
index d5d88bb..7846467 100644
--- a/include/sound/simple_card_utils.h
+++ b/include/sound/simple_card_utils.h
@@ -69,5 +69,7 @@  int asoc_simple_card_init_dai(struct snd_soc_dai *dai,
 			      struct asoc_simple_dai *simple_dai);
 
 int asoc_simple_card_canonicalize_dailink(struct snd_soc_dai_link *dai_link);
+int asoc_simple_card_canonicalize_cpu(struct snd_soc_dai_link *dai_link,
+				      int is_single_links);
 
 #endif /* __SIMPLE_CARD_CORE_H */
diff --git a/sound/soc/generic/simple-card-utils.c b/sound/soc/generic/simple-card-utils.c
index 2524f21..b8977ca 100644
--- a/sound/soc/generic/simple-card-utils.c
+++ b/sound/soc/generic/simple-card-utils.c
@@ -252,3 +252,22 @@  int asoc_simple_card_canonicalize_dailink(struct snd_soc_dai_link *dai_link)
 	return 0;
 }
 EXPORT_SYMBOL_GPL(asoc_simple_card_canonicalize_dailink);
+
+int asoc_simple_card_canonicalize_cpu(struct snd_soc_dai_link *dai_link,
+				      int is_single_links)
+{
+	/*
+	 * In soc_bind_dai_link() will check cpu name after
+	 * of_node matching if dai_link has cpu_dai_name.
+	 * but, it will never match if name was created by
+	 * fmt_single_name() remove cpu_dai_name if cpu_args
+	 * was 0. See:
+	 *	fmt_single_name()
+	 *	fmt_multiple_name()
+	 */
+	if (is_single_links)
+		dai_link->cpu_dai_name = NULL;
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(asoc_simple_card_canonicalize_cpu);