ASoC: soc-dai: add snd_soc_pcm_dai_prepare()

We have 2 type of component functions
snd_soc_dai_xxx()     is focusing to dai itself,
snd_soc_pcm_dai_xxx() is focusing to rtd related dai.

Now we can update snd_soc_dai_prepare() to
snd_soc_pcm_dai_prepare(). This patch do it.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-By: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Link: https://lore.kernel.org/r/87wo65ssk2.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

include/sound/soc-dai.h

@@ -154,8 +154,6 @@ 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);
-int snd_soc_dai_prepare(struct snd_soc_dai *dai,
-			struct snd_pcm_substream *substream);
 int snd_soc_dai_trigger(struct snd_soc_dai *dai,
 			struct snd_pcm_substream *substream, int cmd);
 int snd_soc_dai_bespoke_trigger(struct snd_soc_dai *dai,
@@ -171,6 +169,7 @@ int snd_soc_dai_compress_new(struct snd_soc_dai *dai,
 bool snd_soc_dai_stream_valid(struct snd_soc_dai *dai, int stream);
 
 int snd_soc_pcm_dai_new(struct snd_soc_pcm_runtime *rtd);
+int snd_soc_pcm_dai_prepare(struct snd_pcm_substream *substream);
 
 struct snd_soc_dai_ops {
 	/*

sound/soc/soc-dai.c

@@ -354,18 +354,6 @@ void snd_soc_dai_shutdown(struct snd_soc_dai *dai,
 		dai->driver->ops->shutdown(substream, dai);
 }
 
-int snd_soc_dai_prepare(struct snd_soc_dai *dai,
-			struct snd_pcm_substream *substream)
-{
-	int ret = 0;
-
-	if (dai->driver->ops &&
-	    dai->driver->ops->prepare)
-		ret = dai->driver->ops->prepare(substream, dai);
-
-	return soc_dai_ret(dai, ret);
-}
-
 int snd_soc_dai_trigger(struct snd_soc_dai *dai,
 			struct snd_pcm_substream *substream,
 			int cmd)
@@ -461,3 +449,21 @@ int snd_soc_pcm_dai_new(struct snd_soc_pcm_runtime *rtd)
 
 	return 0;
 }
+
+int snd_soc_pcm_dai_prepare(struct snd_pcm_substream *substream)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_dai *dai;
+	int i, ret;
+
+	for_each_rtd_dais(rtd, i, dai) {
+		if (dai->driver->ops &&
+		    dai->driver->ops->prepare) {
+			ret = dai->driver->ops->prepare(substream, dai);
+			if (ret < 0)
+				return soc_dai_ret(dai, ret);
+		}
+	}
+
+	return 0;
+}

sound/soc/soc-pcm.c

@@ -950,14 +950,11 @@ static int soc_pcm_prepare(struct snd_pcm_substream *substream)
 		}
 	}
 
-	for_each_rtd_dais(rtd, i, dai) {
-		ret = snd_soc_dai_prepare(dai, substream);
+	ret = snd_soc_pcm_dai_prepare(substream);
 	if (ret < 0) {
-			dev_err(dai->dev,
-				"ASoC: DAI prepare error: %d\n", ret);
+		dev_err(rtd->dev, "ASoC: DAI prepare error: %d\n", ret);
 		goto out;
 	}
-	}
 
 	/* cancel any delayed stream shutdown that is pending */
 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK &&