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

Current simple-card is creating dai_link->name / dai_link->stream_name.
These are based on CPU + Codec name, or "fe.CPU" or "be.Codec" if it
was DPCM.
This patch adds asoc_simple_card_set_dailink_name() and set dailink
name as common method.

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

2 files changed, 26 insertions, 0 deletions

diff --git a/include/sound/simple_card_utils.h b/include/sound/simple_card_utils.h
index 50aa7b22a94c..b88a8dcfe4ba 100644
--- a/include/sound/simple_card_utils.h
+++ b/include/sound/simple_card_utils.h
@@ -27,5 +27,8 @@ int asoc_simple_card_parse_daifmt(struct device *dev,
                                   struct device_node *codec,
                                   char *prefix,
                                   unsigned int *retfmt);
+int asoc_simple_card_set_dailink_name(struct device *dev,
+                                      struct snd_soc_dai_link *dai_link,
+                                      const char *fmt, ...);
 
 #endif /* __SIMPLE_CARD_CORE_H */
diff --git a/sound/soc/generic/simple-card-utils.c b/sound/soc/generic/simple-card-utils.c
index 3f6b72526f71..48c73660b66a 100644
--- a/sound/soc/generic/simple-card-utils.c
+++ b/sound/soc/generic/simple-card-utils.c
@@ -52,3 +52,26 @@ int asoc_simple_card_parse_daifmt(struct device *dev,
         return 0;
 }
 EXPORT_SYMBOL_GPL(asoc_simple_card_parse_daifmt);
+
+int asoc_simple_card_set_dailink_name(struct device *dev,
+                                      struct snd_soc_dai_link *dai_link,
+                                      const char *fmt, ...)
+{
+        va_list ap;
+        char *name = NULL;
+        int ret = -ENOMEM;
+
+        va_start(ap, fmt);
+        name = devm_kvasprintf(dev, GFP_KERNEL, fmt, ap);
+        va_end(ap);
+
+        if (name) {
+                ret = 0;
+
+                dai_link->name          = name;
+                dai_link->stream_name   = name;
+        }
+
+        return ret;
+}
+EXPORT_SYMBOL_GPL(asoc_simple_card_set_dailink_name);