ASoC: soc-component: add snd_soc_component_of_xlate_dai_id()

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_id() and use it.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87zhl14d14.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

include/sound/soc-component.h

@@ -358,5 +358,7 @@ void snd_soc_component_resume(struct snd_soc_component *component);
 int snd_soc_component_is_suspended(struct snd_soc_component *component);
 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);
 
 #endif /* __SOC_COMPONENT_H */

sound/soc/soc-component.c

@@ -380,3 +380,12 @@ void snd_soc_component_remove(struct snd_soc_component *component)
 	if (component->driver->remove)
 		component->driver->remove(component);
 }
+
+int snd_soc_component_of_xlate_dai_id(struct snd_soc_component *component,
+				      struct device_node *ep)
+{
+	if (component->driver->of_xlate_dai_id)
+		return component->driver->of_xlate_dai_id(component, ep);
+
+	return -ENOTSUPP;
+}

sound/soc/soc-core.c

@@ -3334,9 +3334,8 @@ int snd_soc_get_dai_id(struct device_node *ep)
 	ret = -ENOTSUPP;
 	mutex_lock(&client_mutex);
 	component = soc_find_component(&dlc);
-	if (component &&
-	    component->driver->of_xlate_dai_id)
-		ret = component->driver->of_xlate_dai_id(component, ep);
+	if (component)
+		ret = snd_soc_component_of_xlate_dai_id(component, ep);
 	mutex_unlock(&client_mutex);
 
 	of_node_put(dlc.of_node);