[PATCH 1/7] ASoC: soc-core: Merge CPU/Codec DAIs

[Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>]

From: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>

ALSA SoC is currently categorizing CPU/Codec DAIs,
and it works well.

But modern devices require more complex connections,
for example Codec to Codec, etc, and future devices will
enable to more complex connections.
Because of these background, CPU/Codec DAIs categorizing is
no longer good much to modern device.

Currently, rtd has both CPU/Codec DAIs pointer.

	rtd->cpu_dais   = [][][][][][][][][]
	rtd->codec_dais = [][][][][][][][][]

This patch merges these into DAIs pointer.

	rtd->dais = [][][][][][][][][][][][][][][][][][]
	            ^cpu_dais         ^codec_dais
	            |--- num_cpus ---|--- num_codecs --|

Then, we can merge for_each_rtd_cpu/codec_dais() from this patch.

-	for_each_rtd_cpu_dais() {
-		...
-	}
-	for_each_rtd_codec_dais() {
-		...
-	}
+	for_each_rtd_dais() {
+		...
+	}

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>
---
 include/sound/soc.h  |  7 ++++++-
 sound/soc/soc-core.c | 18 +++++++++---------
 2 files changed, 15 insertions(+), 10 deletions(-)

diff --git a/include/sound/soc.h b/include/sound/soc.h
index 03054bf9cd37..efa12256bb33 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -1144,6 +1144,7 @@ struct snd_soc_pcm_runtime {
 	struct snd_compr *compr;
 	struct snd_soc_dai *codec_dai;
 	struct snd_soc_dai *cpu_dai;
+	struct snd_soc_dai **dais;
 
 	struct snd_soc_dai **codec_dais;
 	unsigned int num_codecs;
@@ -1183,7 +1184,11 @@ struct snd_soc_pcm_runtime {
 	     (i)++)
 #define for_each_rtd_codec_dais_rollback(rtd, i, dai)		\
 	for (; (--(i) >= 0) && ((dai) = rtd->codec_dais[i]);)
-
+#define for_each_rtd_dais(rtd, i, dai)					\
+	for ((i) = 0;							\
+	     ((i) < (rtd)->num_cpus + (rtd)->num_codecs) &&		\
+		     ((dai) = (rtd)->dais[i]);				\
+	     (i)++)
 
 void snd_soc_close_delayed_work(struct snd_soc_pcm_runtime *rtd);
 
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 4e0f55555e37..511f6b0cb2e0 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -475,22 +475,22 @@ static struct snd_soc_pcm_runtime *soc_new_pcm_runtime(
 	INIT_DELAYED_WORK(&rtd->delayed_work, close_delayed_work);
 
 	/*
-	 * for rtd->codec_dais
+	 * for rtd->dais
 	 */
-	rtd->codec_dais = devm_kcalloc(dev, dai_link->num_codecs,
+	rtd->dais = devm_kcalloc(dev, dai_link->num_cpus + dai_link->num_codecs,
 					sizeof(struct snd_soc_dai *),
 					GFP_KERNEL);
-	if (!rtd->codec_dais)
+	if (!rtd->dais)
 		goto free_rtd;
 
 	/*
-	 * for rtd->cpu_dais
+	 * dais = [][][][][][][][][][][][][][][][][][]
+	 *	  ^cpu_dais         ^codec_dais
+	 *	  |--- num_cpus ---|--- num_codecs --|
 	 */
-	rtd->cpu_dais = devm_kcalloc(dev, dai_link->num_cpus,
-				     sizeof(struct snd_soc_dai *),
-				     GFP_KERNEL);
-	if (!rtd->cpu_dais)
-		goto free_rtd;
+	rtd->cpu_dais	= &rtd->dais[0];
+	rtd->codec_dais	= &rtd->dais[dai_link->num_cpus];
+
 	/*
 	 * rtd remaining settings
 	 */
-- 
2.17.1