ASoC: Add dapm_add_valid_dai_widget helper

Adding a helper to connect widget for a specific cpu and codec dai
The helper will help dapm_connect_dai_link_widgets() to reduce indents.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Shreyas NC <shreyas.nc@intel.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Link: https://lore.kernel.org/r/20200225133917.21314-4-yung-chuan.liao@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/soc-dapm.c

@@ -4277,16 +4277,15 @@ int snd_soc_dapm_link_dai_widgets(struct snd_soc_card *card)
 	return 0;
 }
 
-static void dapm_connect_dai_link_widgets(struct snd_soc_card *card,
-					  struct snd_soc_pcm_runtime *rtd)
+static void dapm_add_valid_dai_widget(struct snd_soc_card *card,
+				      struct snd_soc_pcm_runtime *rtd,
+				      struct snd_soc_dai *codec_dai,
+				      struct snd_soc_dai *cpu_dai)
 {
-	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
-	struct snd_soc_dai *codec_dai;
 	struct snd_soc_dapm_widget *playback = NULL, *capture = NULL;
 	struct snd_soc_dapm_widget *codec, *playback_cpu, *capture_cpu;
 	struct snd_pcm_substream *substream;
 	struct snd_pcm_str *streams = rtd->pcm->streams;
-	int i;
 
 	if (rtd->dai_link->params) {
 		playback_cpu = cpu_dai->capture_widget;
@@ -4298,67 +4297,75 @@ static void dapm_connect_dai_link_widgets(struct snd_soc_card *card,
 		capture_cpu = capture;
 	}
 
-	for_each_rtd_codec_dai(rtd, i, codec_dai) {
-		/* connect BE DAI playback if widgets are valid */
-		codec = codec_dai->playback_widget;
-
-		if (playback_cpu && codec) {
-			if (!playback) {
-				substream = streams[SNDRV_PCM_STREAM_PLAYBACK].substream;
-				playback = snd_soc_dapm_new_dai(card, substream,
-								"playback");
-				if (IS_ERR(playback)) {
-					dev_err(rtd->dev,
-						"ASoC: Failed to create DAI %s: %ld\n",
-						codec_dai->name,
-						PTR_ERR(playback));
-					continue;
-				}
-
-				snd_soc_dapm_add_path(&card->dapm, playback_cpu,
-						      playback, NULL, NULL);
+	/* connect BE DAI playback if widgets are valid */
+	codec = codec_dai->playback_widget;
+
+	if (playback_cpu && codec) {
+		if (!playback) {
+			substream = streams[SNDRV_PCM_STREAM_PLAYBACK].substream;
+			playback = snd_soc_dapm_new_dai(card, substream,
+							"playback");
+			if (IS_ERR(playback)) {
+				dev_err(rtd->dev,
+					"ASoC: Failed to create DAI %s: %ld\n",
+					codec_dai->name,
+					PTR_ERR(playback));
+				goto capture;
 			}
 
-			dev_dbg(rtd->dev, "connected DAI link %s:%s -> %s:%s\n",
-				cpu_dai->component->name, playback_cpu->name,
-				codec_dai->component->name, codec->name);
-
-			snd_soc_dapm_add_path(&card->dapm, playback, codec,
-					      NULL, NULL);
+			snd_soc_dapm_add_path(&card->dapm, playback_cpu,
+					      playback, NULL, NULL);
 		}
-	}
 
-	for_each_rtd_codec_dai(rtd, i, codec_dai) {
-		/* connect BE DAI capture if widgets are valid */
-		codec = codec_dai->capture_widget;
-
-		if (codec && capture_cpu) {
-			if (!capture) {
-				substream = streams[SNDRV_PCM_STREAM_CAPTURE].substream;
-				capture = snd_soc_dapm_new_dai(card, substream,
-							       "capture");
-				if (IS_ERR(capture)) {
-					dev_err(rtd->dev,
-						"ASoC: Failed to create DAI %s: %ld\n",
-						codec_dai->name,
-						PTR_ERR(capture));
-					continue;
-				}
-
-				snd_soc_dapm_add_path(&card->dapm, capture,
-						      capture_cpu, NULL, NULL);
+		dev_dbg(rtd->dev, "connected DAI link %s:%s -> %s:%s\n",
+			cpu_dai->component->name, playback_cpu->name,
+			codec_dai->component->name, codec->name);
+
+		snd_soc_dapm_add_path(&card->dapm, playback, codec,
+				      NULL, NULL);
+	}
+
+capture:
+	/* connect BE DAI capture if widgets are valid */
+	codec = codec_dai->capture_widget;
+
+	if (codec && capture_cpu) {
+		if (!capture) {
+			substream = streams[SNDRV_PCM_STREAM_CAPTURE].substream;
+			capture = snd_soc_dapm_new_dai(card, substream,
+						       "capture");
+			if (IS_ERR(capture)) {
+				dev_err(rtd->dev,
+					"ASoC: Failed to create DAI %s: %ld\n",
+					codec_dai->name,
+					PTR_ERR(capture));
+				return;
 			}
 
-			dev_dbg(rtd->dev, "connected DAI link %s:%s -> %s:%s\n",
-				codec_dai->component->name, codec->name,
-				cpu_dai->component->name, capture_cpu->name);
-
-			snd_soc_dapm_add_path(&card->dapm, codec, capture,
-					      NULL, NULL);
+			snd_soc_dapm_add_path(&card->dapm, capture,
+					      capture_cpu, NULL, NULL);
 		}
+
+		dev_dbg(rtd->dev, "connected DAI link %s:%s -> %s:%s\n",
+			codec_dai->component->name, codec->name,
+			cpu_dai->component->name, capture_cpu->name);
+
+		snd_soc_dapm_add_path(&card->dapm, codec, capture,
+				      NULL, NULL);
 	}
 }
 
+static void dapm_connect_dai_link_widgets(struct snd_soc_card *card,
+					  struct snd_soc_pcm_runtime *rtd)
+{
+	struct snd_soc_dai *codec_dai;
+	int i;
+
+	for_each_rtd_codec_dai(rtd, i, codec_dai)
+		dapm_add_valid_dai_widget(card, rtd,
+					  codec_dai, rtd->cpu_dais[0]);
+}
+
 static void soc_dapm_dai_stream_event(struct snd_soc_dai *dai, int stream,
 	int event)
 {