ASoC: soc-dai: add snd_soc_dai_shutdown()

Current ALSA SoC is directly using dai->driver->ops->xxx,
thus, it has deep nested bracket, and it makes code unreadable.
This patch adds new snd_soc_dai_shutdown() and use it.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87v9vuhn4b.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

include/sound/soc-dai.h

@@ -152,6 +152,8 @@ void snd_soc_dai_hw_free(struct snd_soc_dai *dai,
 			 struct snd_pcm_substream *substream);
 int snd_soc_dai_startup(struct snd_soc_dai *dai,
 			struct snd_pcm_substream *substream);
+void snd_soc_dai_shutdown(struct snd_soc_dai *dai,
+			  struct snd_pcm_substream *substream);
 
 struct snd_soc_dai_ops {
 	/*

sound/soc/soc-dai.c

@@ -300,3 +300,10 @@ int snd_soc_dai_startup(struct snd_soc_dai *dai,
 
 	return ret;
 }
+
+void snd_soc_dai_shutdown(struct snd_soc_dai *dai,
+			 struct snd_pcm_substream *substream)
+{
+	if (dai->driver->ops->shutdown)
+		dai->driver->ops->shutdown(substream, dai);
+}

sound/soc/soc-dapm.c

@@ -3893,9 +3893,7 @@ static int snd_soc_dai_link_event(struct snd_soc_dapm_widget *w,
 			snd_soc_dai_hw_free(source, &substream);
 
 			source->active--;
-			if (source->driver->ops->shutdown)
-				source->driver->ops->shutdown(&substream,
-							      source);
+			snd_soc_dai_shutdown(source, &substream);
 		}
 
 		substream.stream = SNDRV_PCM_STREAM_PLAYBACK;
@@ -3905,8 +3903,7 @@ static int snd_soc_dai_link_event(struct snd_soc_dapm_widget *w,
 			snd_soc_dai_hw_free(sink, &substream);
 
 			sink->active--;
-			if (sink->driver->ops->shutdown)
-				sink->driver->ops->shutdown(&substream, sink);
+			snd_soc_dai_shutdown(sink, &substream);
 		}
 		break;
 

sound/soc/soc-pcm.c

@@ -641,16 +641,13 @@ static int soc_pcm_open(struct snd_pcm_substream *substream)
 	i = rtd->num_codecs;
 
 codec_dai_err:
-	for_each_rtd_codec_dai_rollback(rtd, i, codec_dai) {
-		if (codec_dai->driver->ops->shutdown)
-			codec_dai->driver->ops->shutdown(substream, codec_dai);
-	}
+	for_each_rtd_codec_dai_rollback(rtd, i, codec_dai)
+		snd_soc_dai_shutdown(codec_dai, substream);
 
 component_err:
 	soc_pcm_components_close(substream, component);
 
-	if (cpu_dai->driver->ops->shutdown)
-		cpu_dai->driver->ops->shutdown(substream, cpu_dai);
+	snd_soc_dai_shutdown(cpu_dai, substream);
 out:
 	mutex_unlock(&rtd->pcm_mutex);
 
@@ -728,13 +725,10 @@ static int soc_pcm_close(struct snd_pcm_substream *substream)
 
 	snd_soc_dai_digital_mute(cpu_dai, 1, substream->stream);
 
-	if (cpu_dai->driver->ops->shutdown)
-		cpu_dai->driver->ops->shutdown(substream, cpu_dai);
+	snd_soc_dai_shutdown(cpu_dai, substream);
 
-	for_each_rtd_codec_dai(rtd, i, codec_dai) {
-		if (codec_dai->driver->ops->shutdown)
-			codec_dai->driver->ops->shutdown(substream, codec_dai);
-	}
+	for_each_rtd_codec_dai(rtd, i, codec_dai)
+		snd_soc_dai_shutdown(codec_dai, substream);
 
 	if (rtd->dai_link->ops->shutdown)
 		rtd->dai_link->ops->shutdown(substream);