ASoC: soc-component: add snd_soc_component_of_xlate_dai_name()

Current ALSA SoC is directly using component->driver->xxx,
thus, it is deep nested, and makes code difficult to read,
and is not good for encapsulation.
This patch adds new snd_soc_component_of_xlate_dai_name() and use it
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87y30l4d0z.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

include/sound/soc-component.h

@@ -360,5 +360,8 @@ int snd_soc_component_probe(struct snd_soc_component *component);
 void snd_soc_component_remove(struct snd_soc_component *component);
 int snd_soc_component_of_xlate_dai_id(struct snd_soc_component *component,
 				      struct device_node *ep);
+int snd_soc_component_of_xlate_dai_name(struct snd_soc_component *component,
+					struct of_phandle_args *args,
+					const char **dai_name);
 
 #endif /* __SOC_COMPONENT_H */

sound/soc/soc-component.c

@@ -389,3 +389,13 @@ int snd_soc_component_of_xlate_dai_id(struct snd_soc_component *component,
 
 	return -ENOTSUPP;
 }
+
+int snd_soc_component_of_xlate_dai_name(struct snd_soc_component *component,
+					struct of_phandle_args *args,
+					const char **dai_name)
+{
+	if (component->driver->of_xlate_dai_name)
+		return component->driver->of_xlate_dai_name(component,
+						     args, dai_name);
+	return -ENOTSUPP;
+}

sound/soc/soc-core.c

@@ -3358,11 +3358,8 @@ int snd_soc_get_dai_name(struct of_phandle_args *args,
 		if (component_of_node != args->np)
 			continue;
 
-		if (pos->driver->of_xlate_dai_name) {
-			ret = pos->driver->of_xlate_dai_name(pos,
-							     args,
-							     dai_name);
-		} else {
+		ret = snd_soc_component_of_xlate_dai_name(pos, args, dai_name);
+		if (ret == -ENOTSUPP) {
 			struct snd_soc_dai *dai;
 			int id = -1;