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;
@@ -4298,7 +4297,6 @@ 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;
 
@@ -4312,7 +4310,7 @@ static void dapm_connect_dai_link_widgets(struct snd_soc_card *card,
 					"ASoC: Failed to create DAI %s: %ld\n",
 					codec_dai->name,
 					PTR_ERR(playback));
-					continue;
+				goto capture;
 			}
 
 			snd_soc_dapm_add_path(&card->dapm, playback_cpu,
@@ -4326,9 +4324,8 @@ static void dapm_connect_dai_link_widgets(struct snd_soc_card *card,
 		snd_soc_dapm_add_path(&card->dapm, playback, codec,
 				      NULL, NULL);
 	}
-	}
 
-	for_each_rtd_codec_dai(rtd, i, codec_dai) {
+capture:
 	/* connect BE DAI capture if widgets are valid */
 	codec = codec_dai->capture_widget;
 
@@ -4342,7 +4339,7 @@ static void dapm_connect_dai_link_widgets(struct snd_soc_card *card,
 					"ASoC: Failed to create DAI %s: %ld\n",
 					codec_dai->name,
 					PTR_ERR(capture));
-					continue;
+				return;
 			}
 
 			snd_soc_dapm_add_path(&card->dapm, capture,
@@ -4356,7 +4353,17 @@ static void dapm_connect_dai_link_widgets(struct snd_soc_card *card,
 		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,