ASoC: soc-core: adjust for graph on snd_soc_of_parse_card_name

It is assuming that the card related information is located on
"card" node, but graph case doesn't have it.
This patch adds node parameter to adjust for graph support
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

include/sound/soc.h

@@ -1642,7 +1642,10 @@ static inline struct snd_soc_platform *snd_soc_kcontrol_platform(
 int snd_soc_util_init(void);
 void snd_soc_util_exit(void);
 
-int snd_soc_of_parse_card_name(struct snd_soc_card *card,
+#define snd_soc_of_parse_card_name(card, propname) \
+	snd_soc_of_parse_card_name_from_node(card, NULL, propname)
+int snd_soc_of_parse_card_name_from_node(struct snd_soc_card *card,
+					 struct device_node *np,
 					 const char *propname);
 int snd_soc_of_parse_audio_simple_widgets(struct snd_soc_card *card,
 					  const char *propname);

sound/soc/soc-core.c

@@ -3424,10 +3424,10 @@ void snd_soc_unregister_codec(struct device *dev)
 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec);
 
 /* Retrieve a card's name from device tree */
-int snd_soc_of_parse_card_name(struct snd_soc_card *card,
+int snd_soc_of_parse_card_name_from_node(struct snd_soc_card *card,
+					 struct device_node *np,
 					 const char *propname)
 {
-	struct device_node *np;
 	int ret;
 
 	if (!card->dev) {
@@ -3435,6 +3435,7 @@ int snd_soc_of_parse_card_name(struct snd_soc_card *card,
 		return -EINVAL;
 	}
 
+	if (!np)
 		np = card->dev->of_node;
 
 	ret = of_property_read_string_index(np, propname, 0, &card->name);
@@ -3452,7 +3453,7 @@ int snd_soc_of_parse_card_name(struct snd_soc_card *card,
 
 	return 0;
 }
-EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name);
+EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name_from_node);
 
 static const struct snd_soc_dapm_widget simple_widgets[] = {
 	SND_SOC_DAPM_MIC("Microphone", NULL),