[PATCH 1/6] ASoC: simple-card-utils: add asoc_simple_card_canonicalize_cpu()

[Kuninori Morimoto]

From: Kuninori Morimoto <kuninori.morimoto...@renesas.com>

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 <kuninori.morimoto...@renesas.com>
---
 include/sound/simple_card_utils.h     |  2 ++
 sound/soc/generic/simple-card-utils.c | 17 +++++++++++++++++
 2 files changed, 19 insertions(+)

diff --git a/include/sound/simple_card_utils.h 
b/include/sound/simple_card_utils.h
index a71d46a..f760f55 100644
--- a/include/sound/simple_card_utils.h
+++ b/include/sound/simple_card_utils.h
@@ -62,5 +62,7 @@ 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);
+void 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 189eadd..c5d32da 100644
--- a/sound/soc/generic/simple-card-utils.c
+++ b/sound/soc/generic/simple-card-utils.c
@@ -206,6 +206,23 @@ int asoc_simple_card_canonicalize_dailink(struct 
snd_soc_dai_link *dai_link)
 }
 EXPORT_SYMBOL_GPL(asoc_simple_card_canonicalize_dailink);
 
+void 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;
+}
+EXPORT_SYMBOL_GPL(asoc_simple_card_canonicalize_cpu);
+
 /* Module information */
 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto...@renesas.com>");
 MODULE_DESCRIPTION("ALSA SoC Simple Card Utils");
-- 
1.9.1