ASoC: soc-component: add snd_soc_component_is_codec()

Checking .non_legacy_dai_naming is not readable.
Let's add new snd_soc_component_is_codec().

Signed-off-by: Kuninori Morimoto <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Mark Brown <[e-mail]>

include/sound/soc-component.h

···
 	return regcache_sync(component->regmap);
 }
 
+static inline int snd_soc_component_is_codec(struct snd_soc_component *component)
+{
+	return component->driver->non_legacy_dai_naming;
+}
+
 void snd_soc_component_set_aux(struct snd_soc_component *component,
 			       struct snd_soc_aux_dev *aux);
 int snd_soc_component_init(struct snd_soc_component *component);

sound/soc/generic/simple-card-utils.c

···
 	struct snd_pcm_hardware hw;
 	int i, ret, stream;
 
-	/* Only codecs should have non_legacy_dai_naming set. */
+	/* Only Codecs */
 	for_each_rtd_components(rtd, i, component) {
-		if (!component->driver->non_legacy_dai_naming)
+		if (!snd_soc_component_is_codec(component))
 			return 0;
 	}
 

sound/soc/soc-core.c

···
 
 	/*
 	 * Flip the polarity for the "CPU" end of a CODEC<->CODEC link
-	 * the component which has non_legacy_dai_naming is Codec
 	 */
 	inv_dai_fmt = snd_soc_daifmt_clock_provider_fliped(dai_fmt);
 
 	for_each_rtd_cpu_dais(rtd, i, cpu_dai) {
 		unsigned int fmt = dai_fmt;
 
-		if (cpu_dai->component->driver->non_legacy_dai_naming)
+		if (snd_soc_component_is_codec(cpu_dai->component))
 			fmt = inv_dai_fmt;
 
 		ret = snd_soc_dai_set_fmt(cpu_dai, fmt);
···
 
 	for (i = 0; i < count; i++) {
 		dai = snd_soc_register_dai(component, dai_drv + i, count == 1 &&
-				  !component->driver->non_legacy_dai_naming);
+					   !snd_soc_component_is_codec(component));
 		if (dai == NULL) {
 			ret = -ENOMEM;
 			goto err;