ASoC: soc.h: use array instead of playback/capture_widget

snd_soc_pcm_runtime has playback/capture_widget for Codec2Coddec.
The naming is unclear.
This patch names it as c2c_widget and uses array.

	struct snd_soc_pcm_runtime {
		...
=>		struct snd_soc_dapm_widget *playback_widget;
=>		struct snd_soc_dapm_widget *capture_widget;
		...
	}
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87pmfqv9mk.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

include/sound/soc.h

@@ -1063,6 +1063,7 @@ struct snd_soc_pcm_runtime {
 
 	/* Dynamic PCM BE runtime data */
 	struct snd_soc_dpcm_runtime dpcm[SNDRV_PCM_STREAM_LAST + 1];
+	struct snd_soc_dapm_widget *c2c_widget[SNDRV_PCM_STREAM_LAST + 1];
 
 	long pmdown_time;
 
@@ -1079,9 +1080,6 @@ struct snd_soc_pcm_runtime {
 	 */
 	struct snd_soc_dai **dais;
 
-	struct snd_soc_dapm_widget *playback_widget;
-	struct snd_soc_dapm_widget *capture_widget;
-
 	struct delayed_work delayed_work;
 	void (*close_delayed_work_func)(struct snd_soc_pcm_runtime *rtd);
 #ifdef CONFIG_DEBUG_FS

sound/soc/soc-dapm.c

@@ -4361,6 +4361,7 @@ static void dapm_connect_dai_pair(struct snd_soc_card *card,
 	struct snd_soc_dapm_widget *dai, *codec, *playback_cpu, *capture_cpu;
 	struct snd_pcm_substream *substream;
 	struct snd_pcm_str *streams = rtd->pcm->streams;
+	int stream;
 
 	if (dai_link->params) {
 		playback_cpu = cpu_dai->capture_widget;
@@ -4371,37 +4372,39 @@ static void dapm_connect_dai_pair(struct snd_soc_card *card,
 	}
 
 	/* connect BE DAI playback if widgets are valid */
+	stream = SNDRV_PCM_STREAM_PLAYBACK;
 	codec = codec_dai->playback_widget;
 
 	if (playback_cpu && codec) {
-		if (dai_link->params && !rtd->playback_widget) {
-			substream = streams[SNDRV_PCM_STREAM_PLAYBACK].substream;
+		if (dai_link->params && !rtd->c2c_widget[stream]) {
+			substream = streams[stream].substream;
 			dai = snd_soc_dapm_new_dai(card, substream, "playback");
 			if (IS_ERR(dai))
 				goto capture;
-			rtd->playback_widget = dai;
+			rtd->c2c_widget[stream] = dai;
 		}
 
 		dapm_connect_dai_routes(&card->dapm, cpu_dai, playback_cpu,
-					rtd->playback_widget,
+					rtd->c2c_widget[stream],
 					codec_dai, codec);
 	}
 
 capture:
 	/* connect BE DAI capture if widgets are valid */
+	stream = SNDRV_PCM_STREAM_CAPTURE;
 	codec = codec_dai->capture_widget;
 
 	if (codec && capture_cpu) {
-		if (dai_link->params && !rtd->capture_widget) {
-			substream = streams[SNDRV_PCM_STREAM_CAPTURE].substream;
+		if (dai_link->params && !rtd->c2c_widget[stream]) {
+			substream = streams[stream].substream;
 			dai = snd_soc_dapm_new_dai(card, substream, "capture");
 			if (IS_ERR(dai))
 				return;
-			rtd->capture_widget = dai;
+			rtd->c2c_widget[stream] = dai;
 		}
 
 		dapm_connect_dai_routes(&card->dapm, codec_dai, codec,
-					rtd->capture_widget,
+					rtd->c2c_widget[stream],
 					cpu_dai, capture_cpu);
 	}
 }