ASoC: soc-dai: add snd_soc_dai_mute_is_ctrled_at_trigger()

Adds snd_soc_dai_mute_is_ctrled_at_trigger() to judge
dai->driver->ops->mute_unmute_on_trigger flags

Signed-off-by: Kuninori Morimoto <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Signed-off-by: Mark Brown <[e-mail]>

include/sound/soc-dai.h

···
 /* Digital Audio Interface mute */
 int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute,
 			     int direction);
-
+int snd_soc_dai_mute_is_ctrled_at_trigger(struct snd_soc_dai *dai);
 
 int snd_soc_dai_get_channel_map(const struct snd_soc_dai *dai,
 		unsigned int *tx_num, unsigned int *tx_slot,

sound/soc/soc-dai.c

···
 }
 EXPORT_SYMBOL_GPL(snd_soc_dai_prepare);
 
+int snd_soc_dai_mute_is_ctrled_at_trigger(struct snd_soc_dai *dai)
+{
+	if (dai->driver->ops)
+		return dai->driver->ops->mute_unmute_on_trigger;
+
+	return 0;
+}
+
 /**
  * snd_soc_dai_digital_mute - configure DAI system or master clock.
  * @dai: DAI
···
 			if (ret < 0)
 				break;
 
-			if (dai->driver->ops && dai->driver->ops->mute_unmute_on_trigger)
+			if (snd_soc_dai_mute_is_ctrled_at_trigger(dai))
 				snd_soc_dai_digital_mute(dai, 0, substream->stream);
 
 			soc_dai_mark_push(dai, substream, trigger);
···
 			if (rollback && !soc_dai_mark_match(dai, substream, trigger))
 				continue;
 
-			if (dai->driver->ops && dai->driver->ops->mute_unmute_on_trigger)
+			if (snd_soc_dai_mute_is_ctrled_at_trigger(dai))
 				snd_soc_dai_digital_mute(dai, 1, substream->stream);
 
 			r = soc_dai_trigger(dai, substream, cmd);

sound/soc/soc-pcm.c

···
 			SND_SOC_DAPM_STREAM_START);
 
 	for_each_rtd_dais(rtd, i, dai) {
-		if (dai->driver->ops && !dai->driver->ops->mute_unmute_on_trigger)
+		if (!snd_soc_dai_mute_is_ctrled_at_trigger(dai))
 			snd_soc_dai_digital_mute(dai, 0, substream->stream);
 	}
 
···
 			soc_pcm_set_dai_params(dai, NULL);
 
 		if (snd_soc_dai_stream_active(dai, substream->stream) == 1) {
-			if (dai->driver->ops && !dai->driver->ops->mute_unmute_on_trigger)
+			if (!snd_soc_dai_mute_is_ctrled_at_trigger(dai))
 				snd_soc_dai_digital_mute(dai, 1, substream->stream);
 		}
 	}