ASoC: soc-core.c: cleanup soc_dai_link_sanity_check()

Required CPU/Codec/Platform dlc (snd_soc_dai_link_component) are similar
but not same, and very complex. Current implementation is very confusable
and it will be more complex if multi Component was supported.
This patch cleanup it.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87o7l9blsn.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/soc-core.c

@@ -238,6 +238,21 @@ static inline void snd_soc_debugfs_exit(void) { }
 
 #endif
 
+static inline int snd_soc_dlc_component_is_empty(struct snd_soc_dai_link_component *dlc)
+{
+	return !(dlc->name || dlc->of_node);
+}
+
+static inline int snd_soc_dlc_component_is_invalid(struct snd_soc_dai_link_component *dlc)
+{
+	return (dlc->name && dlc->of_node);
+}
+
+static inline int snd_soc_dlc_dai_is_empty(struct snd_soc_dai_link_component *dlc)
+{
+	return !dlc->dai_name;
+}
+
 static int snd_soc_rtd_add_component(struct snd_soc_pcm_runtime *rtd,
 				     struct snd_soc_component *component)
 {
@@ -829,102 +844,100 @@ static int soc_dai_link_sanity_check(struct snd_soc_card *card,
 				     struct snd_soc_dai_link *link)
 {
 	int i;
-	struct snd_soc_dai_link_component *cpu, *codec, *platform;
+	struct snd_soc_dai_link_component *dlc;
 
-	for_each_link_codecs(link, i, codec) {
+	/* Codec check */
+	for_each_link_codecs(link, i, dlc) {
 		/*
 		 * Codec must be specified by 1 of name or OF node,
 		 * not both or neither.
 		 */
-		if (!!codec->name == !!codec->of_node) {
-			dev_err(card->dev, "ASoC: Neither/both codec name/of_node are set for %s\n",
-				link->name);
-			return -EINVAL;
-		}
+		if (snd_soc_dlc_component_is_invalid(dlc))
+			goto component_invalid;
+
+		if (snd_soc_dlc_component_is_empty(dlc))
+			goto component_empty;
 
 		/* Codec DAI name must be specified */
-		if (!codec->dai_name) {
-			dev_err(card->dev, "ASoC: codec_dai_name not set for %s\n",
-				link->name);
-			return -EINVAL;
-		}
+		if (snd_soc_dlc_dai_is_empty(dlc))
+			goto dai_empty;
 
 		/*
 		 * Defer card registration if codec component is not added to
 		 * component list.
 		 */
-		if (!soc_find_component(codec)) {
-			dev_dbg(card->dev,
-				"ASoC: codec component %s not found for link %s\n",
-				codec->name, link->name);
-			return -EPROBE_DEFER;
-		}
+		if (!soc_find_component(dlc))
+			goto component_not_find;
 	}
 
-	for_each_link_platforms(link, i, platform) {
+	/* Platform check */
+	for_each_link_platforms(link, i, dlc) {
 		/*
 		 * Platform may be specified by either name or OF node, but it
 		 * can be left unspecified, then no components will be inserted
 		 * in the rtdcom list
 		 */
-		if (!!platform->name == !!platform->of_node) {
-			dev_err(card->dev,
-				"ASoC: Neither/both platform name/of_node are set for %s\n",
-				link->name);
-			return -EINVAL;
-		}
+		if (snd_soc_dlc_component_is_invalid(dlc))
+			goto component_invalid;
+
+		if (snd_soc_dlc_component_is_empty(dlc))
+			goto component_empty;
 
 		/*
 		 * Defer card registration if platform component is not added to
 		 * component list.
 		 */
-		if (!soc_find_component(platform)) {
-			dev_dbg(card->dev,
-				"ASoC: platform component %s not found for link %s\n",
-				platform->name, link->name);
-			return -EPROBE_DEFER;
-		}
+		if (!soc_find_component(dlc))
+			goto component_not_find;
 	}
 
-	for_each_link_cpus(link, i, cpu) {
+	/* CPU check */
+	for_each_link_cpus(link, i, dlc) {
 		/*
 		 * CPU device may be specified by either name or OF node, but
 		 * can be left unspecified, and will be matched based on DAI
 		 * name alone..
 		 */
-		if (cpu->name && cpu->of_node) {
-			dev_err(card->dev,
-				"ASoC: Neither/both cpu name/of_node are set for %s\n",
-				link->name);
-			return -EINVAL;
-		}
+		if (snd_soc_dlc_component_is_invalid(dlc))
+			goto component_invalid;
 
-		/*
-		 * Defer card registration if cpu dai component is not added to
-		 * component list.
-		 */
-		if ((cpu->of_node || cpu->name) &&
-		    !soc_find_component(cpu)) {
-			dev_dbg(card->dev,
-				"ASoC: cpu component %s not found for link %s\n",
-				cpu->name, link->name);
-			return -EPROBE_DEFER;
-		}
 
-		/*
-		 * At least one of CPU DAI name or CPU device name/node must be
-		 * specified
-		 */
-		if (!cpu->dai_name &&
-		    !(cpu->name || cpu->of_node)) {
-			dev_err(card->dev,
-				"ASoC: Neither cpu_dai_name nor cpu_name/of_node are set for %s\n",
-				link->name);
-			return -EINVAL;
+		if (snd_soc_dlc_component_is_empty(dlc)) {
+			/*
+			 * At least one of CPU DAI name or CPU device name/node must be specified
+			 */
+			if (snd_soc_dlc_dai_is_empty(dlc))
+				goto component_dai_empty;
+		} else {
+			/*
+			 * Defer card registration if Component is not added
+			 */
+			if (!soc_find_component(dlc))
+				goto component_not_find;
 		}
 	}
 
 	return 0;
+
+component_invalid:
+	dev_err(card->dev, "ASoC: Both Component name/of_node are set for %s\n", link->name);
+	return -EINVAL;
+
+component_empty:
+	dev_err(card->dev, "ASoC: Neither Component name/of_node are set for %s\n", link->name);
+	return -EINVAL;
+
+component_not_find:
+	dev_err(card->dev, "ASoC: Component %s not found for link %s\n", dlc->name, link->name);
+	return -EPROBE_DEFER;
+
+dai_empty:
+	dev_err(card->dev, "ASoC: DAI name is not set for %s\n", link->name);
+	return -EINVAL;
+
+component_dai_empty:
+	dev_err(card->dev, "ASoC: Neither DAI/Component name/of_node are set for %s\n", link->name);
+	return -EINVAL;
 }
 
 /**