Merge "SoC: soc-core: export function to find components"

include/sound/soc.h

@@ -1336,6 +1336,11 @@ int snd_soc_register_dai(struct snd_soc_component *component,
 struct snd_soc_dai *snd_soc_find_dai(
 	const struct snd_soc_dai_link_component *dlc);
 
+#ifdef CONFIG_AUDIO_QGKI
+struct snd_soc_component *soc_find_component(
+	const struct snd_soc_dai_link_component *dlc);
+#endif
+
 #include <sound/soc-dai.h>
 
 static inline

sound/soc/soc-core.c

@@ -763,6 +763,39 @@ static int snd_soc_is_matching_component(
 	return 1;
 }
 
+#ifdef CONFIG_AUDIO_QGKI
+/**
+ * soc_find_component: find a component from component_list in ASoC core
+ *
+ * @dlc: dlc of the component to query.
+ *
+ * function to find out if a component is already registered with ASoC core.
+ *
+ * Returns component handle for success, else NULL error.
+ */
+struct snd_soc_component *soc_find_component(
+	const struct snd_soc_dai_link_component *dlc)
+{
+	struct snd_soc_component *component;
+
+	lockdep_assert_held(&client_mutex);
+
+	/*
+	 * NOTE
+	 *
+	 * It returns *1st* found component, but some driver
+	 * has few components by same of_node/name
+	 * ex)
+	 *	CPU component and generic DMAEngine component
+	 */
+	for_each_component(component)
+		if (snd_soc_is_matching_component(dlc, component))
+			return component;
+
+	return NULL;
+}
+EXPORT_SYMBOL(soc_find_component);
+#else
 static struct snd_soc_component *soc_find_component(
 	const struct snd_soc_dai_link_component *dlc)
 {
@@ -784,6 +817,7 @@ static struct snd_soc_component *soc_find_component(
 
 	return NULL;
 }
+#endif
 
 /**
  * snd_soc_find_dai - Find a registered DAI