ASoC: rsnd: Get correct SCU ID

Current rsnd driver is assuming that SCU/SRU ID is
same as SSIU/SSI ID, because Gen1 can't select it.
But, Gen2 can select it.
The SCU/SRU/SSIU/SSI pair depends on the platform.
This patch get correct SCU ID from platform info.
To keep compatible, it still assuming SCU ID = SSI ID
if platform doesn't have info
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

include/sound/rcar_snd.h

@@ -70,6 +70,7 @@ struct rsnd_scu_platform_info {
 
 struct rsnd_dai_path_info {
 	struct rsnd_ssi_platform_info *ssi;
+	struct rsnd_scu_platform_info *scu;
 };
 
 struct rsnd_dai_platform_info {

sound/soc/sh/rcar/core.c

@@ -107,6 +107,11 @@
 	(!(priv->info->func) ? 0 :		\
 	 priv->info->func(param))
 
+#define rsnd_is_enable_path(io, name) \
+	((io)->info ? (io)->info->name : NULL)
+#define rsnd_info_id(priv, io, name) \
+	((io)->info->name - priv->info->name##_info)
+
 /*
  *	rsnd_mod functions
  */
@@ -572,8 +577,10 @@ static int rsnd_path_init(struct rsnd_priv *priv,
 			  struct rsnd_dai_stream *io)
 {
 	struct rsnd_mod *mod;
+	struct rsnd_dai_platform_info *dai_info = rdai->info;
 	int ret;
-	int id;
+	int ssi_id = -1;
+	int scu_id = -1;
 
 	/*
 	 * Gen1 is created by SRU/SSI, and this SRU is base module of
@@ -584,29 +591,35 @@ static int rsnd_path_init(struct rsnd_priv *priv,
 	 *
 	 * Gen2 SCU path is very flexible, but, Gen1 SRU (SCU parts) is
 	 * using fixed path.
-	 *
-	 * Then, SSI id = SCU id here
 	 */
-	/* get SSI's ID */
-	mod = rsnd_ssi_mod_get_frm_dai(priv,
-				       rsnd_dai_id(priv, rdai),
-				       rsnd_dai_is_play(rdai, io));
-	if (!mod)
-		return 0;
-	id = rsnd_mod_id(mod);
+	if (dai_info) {
+		if (rsnd_is_enable_path(io, ssi))
+			ssi_id = rsnd_info_id(priv, io, ssi);
+		if (rsnd_is_enable_path(io, scu))
+			scu_id = rsnd_info_id(priv, io, scu);
+	} else {
+		/* get SSI's ID */
+		mod = rsnd_ssi_mod_get_frm_dai(priv,
+					       rsnd_dai_id(priv, rdai),
+					       rsnd_dai_is_play(rdai, io));
+		if (!mod)
+			return 0;
+		ssi_id = scu_id = rsnd_mod_id(mod);
+	}
+
 	ret = 0;
 
 	/* SCU */
-	mod = rsnd_scu_mod_get(priv, id);
-	if (mod) {
+	if (scu_id >= 0) {
+		mod = rsnd_scu_mod_get(priv, scu_id);
 		ret = rsnd_dai_connect(mod, io);
 		if (ret < 0)
 			return ret;
 	}
 
 	/* SSI */
-	mod = rsnd_ssi_mod_get(priv, id);
-	if (mod) {
+	if (ssi_id >= 0) {
+		mod = rsnd_ssi_mod_get(priv, ssi_id);
 		ret = rsnd_dai_connect(mod, io);
 		if (ret < 0)
 			return ret;
@@ -699,6 +712,9 @@ static int rsnd_dai_probe(struct platform_device *pdev,
 			drv[i].playback.formats		= RSND_FMTS;
 			drv[i].playback.channels_min	= 2;
 			drv[i].playback.channels_max	= 2;
+
+			if (info->dai_info)
+				rdai[i].playback.info = &info->dai_info[i].playback;
 			rsnd_path_init(priv, &rdai[i], &rdai[i].playback);
 		}
 		if (cmod) {
@@ -706,6 +722,9 @@ static int rsnd_dai_probe(struct platform_device *pdev,
 			drv[i].capture.formats		= RSND_FMTS;
 			drv[i].capture.channels_min	= 2;
 			drv[i].capture.channels_max	= 2;
+
+			if (info->dai_info)
+				rdai[i].capture.info = &info->dai_info[i].capture;
 			rsnd_path_init(priv, &rdai[i], &rdai[i].capture);
 		}
 

sound/soc/sh/rcar/rsnd.h

@@ -211,6 +211,7 @@ char *rsnd_mod_name(struct rsnd_mod *mod);
 struct rsnd_dai_stream {
 	struct snd_pcm_substream *substream;
 	struct rsnd_mod *mod[RSND_MOD_MAX];
+	struct rsnd_dai_path_info *info; /* rcar_snd.h */
 	int byte_pos;
 	int period_pos;
 	int byte_per_period;
@@ -328,6 +329,19 @@ struct rsnd_priv {
 #define rsnd_lock(priv, flags) spin_lock_irqsave(&priv->lock, flags)
 #define rsnd_unlock(priv, flags) spin_unlock_irqrestore(&priv->lock, flags)
 
+#define rsnd_info_is_playback(priv, type)				\
+({									\
+	struct rcar_snd_info *info = rsnd_priv_to_info(priv);		\
+	int i, is_play = 0;						\
+	for (i = 0; i < info->dai_info_nr; i++) {			\
+		if (info->dai_info[i].playback.type == (type)->info) {	\
+			is_play = 1;					\
+			break;						\
+		}							\
+	}								\
+	is_play;							\
+})
+
 /*
  *	R-Car SCU
  */

sound/soc/sh/rcar/scu.c

@@ -620,6 +620,9 @@ int rsnd_scu_probe(struct platform_device *pdev,
 	 * init SCU
 	 */
 	nr	= info->scu_info_nr;
+	if (!nr)
+		return 0;
+
 	scu	= devm_kzalloc(dev, sizeof(*scu) * nr, GFP_KERNEL);
 	if (!scu) {
 		dev_err(dev, "SCU allocate failed\n");
@@ -644,11 +647,19 @@ int rsnd_scu_probe(struct platform_device *pdev,
 			if (rsnd_is_gen1(priv))
 				ops = &rsnd_scu_gen1_ops;
 			if (rsnd_is_gen2(priv)) {
-				struct rsnd_mod *ssi = rsnd_ssi_mod_get(priv, i);
-				int ret = rsnd_dma_init(priv,
-						rsnd_mod_to_dma(&scu->mod),
-						rsnd_ssi_is_play(ssi),
-						scu->info->dma_id);
+				int ret;
+				int is_play;
+
+				if (info->dai_info) {
+					is_play = rsnd_info_is_playback(priv, scu);
+				} else {
+					struct rsnd_mod *ssi = rsnd_ssi_mod_get(priv, i);
+					is_play = rsnd_ssi_is_play(ssi);
+				}
+				ret = rsnd_dma_init(priv,
+						    rsnd_mod_to_dma(&scu->mod),
+						    is_play,
+						    scu->info->dma_id);
 				if (ret < 0)
 					return ret;
 

sound/soc/sh/rcar/ssi.c

@@ -567,9 +567,16 @@ int rsnd_ssi_probe(struct platform_device *pdev,
 		 * SSI DMA case
 		 */
 		if (pinfo->dma_id > 0) {
+			int is_play;
+
+			if (info->dai_info)
+				is_play = rsnd_info_is_playback(priv, ssi);
+			else
+				is_play = rsnd_ssi_is_play(&ssi->mod);
+
 			ret = rsnd_dma_init(
 				priv, rsnd_mod_to_dma(&ssi->mod),
-				rsnd_ssi_is_play(&ssi->mod),
+				is_play,
 				pinfo->dma_id);
 			if (ret < 0)
 				dev_info(dev, "SSI DMA failed. try PIO transter\n");