ASoC: simple-card-utils: add codec2codec support

codec2codec needs snd_soc_pcm_stream settings.
This patch adds it.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/874k9mn8qy.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

include/sound/simple_card_utils.h

@@ -42,6 +42,7 @@ struct prop_nums {
 	int cpus;
 	int codecs;
 	int platforms;
+	int c2c;
 };
 
 struct asoc_simple_priv {
@@ -54,6 +55,7 @@ struct asoc_simple_priv {
 		struct snd_soc_dai_link_component *platforms;
 		struct asoc_simple_data adata;
 		struct snd_soc_codec_conf *codec_conf;
+		struct snd_soc_pcm_stream *c2c_conf;
 		struct prop_nums num;
 		unsigned int mclk_fs;
 	} *dai_props;
@@ -64,6 +66,7 @@ struct asoc_simple_priv {
 	struct snd_soc_dai_link_component *dlcs;
 	struct snd_soc_dai_link_component dummy;
 	struct snd_soc_codec_conf *codec_conf;
+	struct snd_soc_pcm_stream *c2c_conf;
 	struct gpio_desc *pa_gpio;
 	const struct snd_soc_ops *ops;
 	unsigned int dpcm_selectable:1;

sound/soc/generic/simple-card-utils.c

@@ -619,7 +619,8 @@ int asoc_simple_init_priv(struct asoc_simple_priv *priv,
 	struct asoc_simple_dai *dais;
 	struct snd_soc_dai_link_component *dlcs;
 	struct snd_soc_codec_conf *cconf = NULL;
-	int i, dai_num = 0, dlc_num = 0, cnf_num = 0;
+	struct snd_soc_pcm_stream *c2c_conf = NULL;
+	int i, dai_num = 0, dlc_num = 0, cnf_num = 0, c2c_num = 0;
 
 	dai_props = devm_kcalloc(dev, li->link, sizeof(*dai_props), GFP_KERNEL);
 	dai_link  = devm_kcalloc(dev, li->link, sizeof(*dai_link),  GFP_KERNEL);
@@ -638,6 +639,8 @@ int asoc_simple_init_priv(struct asoc_simple_priv *priv,
 
 		if (!li->num[i].cpus)
 			cnf_num += li->num[i].codecs;
+
+		c2c_num += li->num[i].c2c;
 	}
 
 	dais = devm_kcalloc(dev, dai_num, sizeof(*dais), GFP_KERNEL);
@@ -651,6 +654,12 @@ int asoc_simple_init_priv(struct asoc_simple_priv *priv,
 			return -ENOMEM;
 	}
 
+	if (c2c_num) {
+		c2c_conf = devm_kcalloc(dev, c2c_num, sizeof(*c2c_conf), GFP_KERNEL);
+		if (!c2c_conf)
+			return -ENOMEM;
+	}
+
 	dev_dbg(dev, "link %d, dais %d, ccnf %d\n",
 		li->link, dai_num, cnf_num);
 
@@ -664,6 +673,7 @@ int asoc_simple_init_priv(struct asoc_simple_priv *priv,
 	priv->dais		= dais;
 	priv->dlcs		= dlcs;
 	priv->codec_conf	= cconf;
+	priv->c2c_conf		= c2c_conf;
 
 	card->dai_link		= priv->dai_link;
 	card->num_links		= li->link;
@@ -681,6 +691,12 @@ int asoc_simple_init_priv(struct asoc_simple_priv *priv,
 
 			dlcs += li->num[i].cpus;
 			dais += li->num[i].cpus;
+
+			if (li->num[i].c2c) {
+				/* Codec2Codec */
+				dai_props[i].c2c_conf = c2c_conf;
+				c2c_conf += li->num[i].c2c;
+			}
 		} else {
 			/* DPCM Be's CPU = dummy */
 			dai_props[i].cpus	=