ASoC: rsnd: remove platform boot support from ctu.c

No board is using Renesas sound driver via platform boot now.
This means all user is using DT boot. Platform boot support is
no longer needed. But, it strongly depends on platform boot style.
This patch removes platform boot support from ctu.c

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sh/rcar/ctu.c

@@ -13,7 +13,6 @@
 #define CTU_NAME "ctu"
 
 struct rsnd_ctu {
-	struct rsnd_ctu_platform_info *info; /* rcar_snd.h */
 	struct rsnd_mod mod;
 };
 
@@ -24,6 +23,7 @@ struct rsnd_ctu {
 		     ((pos) = (struct rsnd_ctu *)(priv)->ctu + i);	\
 	     i++)
 
+#define rsnd_ctu_get(priv, id) ((struct rsnd_ctu *)(priv->ctu) + id)
 #define rsnd_ctu_initialize_lock(mod)	__rsnd_ctu_initialize_lock(mod, 1)
 #define rsnd_ctu_initialize_unlock(mod)	__rsnd_ctu_initialize_lock(mod, 0)
 static void __rsnd_ctu_initialize_lock(struct rsnd_mod *mod, u32 enable)
@@ -74,51 +74,15 @@ struct rsnd_mod *rsnd_ctu_mod_get(struct rsnd_priv *priv, int id)
 	if (WARN_ON(id < 0 || id >= rsnd_ctu_nr(priv)))
 		id = 0;
 
-	return rsnd_mod_get((struct rsnd_ctu *)(priv->ctu) + id);
-}
-
-static void rsnd_of_parse_ctu(struct platform_device *pdev,
-		       const struct rsnd_of_data *of_data,
-		       struct rsnd_priv *priv)
-{
-	struct device_node *node;
-	struct rsnd_ctu_platform_info *ctu_info;
-	struct rcar_snd_info *info = rsnd_priv_to_info(priv);
-	struct device *dev = &pdev->dev;
-	int nr;
-
-	if (!of_data)
-		return;
-
-	node = rsnd_ctu_of_node(priv);
-	if (!node)
-		return;
-
-	nr = of_get_child_count(node);
-	if (!nr)
-		goto rsnd_of_parse_ctu_end;
-
-	ctu_info = devm_kzalloc(dev,
-				sizeof(struct rsnd_ctu_platform_info) * nr,
-				GFP_KERNEL);
-	if (!ctu_info) {
-		dev_err(dev, "ctu info allocation error\n");
-		goto rsnd_of_parse_ctu_end;
-	}
-
-	info->ctu_info		= ctu_info;
-	info->ctu_info_nr	= nr;
-
-rsnd_of_parse_ctu_end:
-	of_node_put(node);
-
+	return rsnd_mod_get(rsnd_ctu_get(priv, id));
 }
 
 int rsnd_ctu_probe(struct platform_device *pdev,
 		   const struct rsnd_of_data *of_data,
 		   struct rsnd_priv *priv)
 {
-	struct rcar_snd_info *info = rsnd_priv_to_info(priv);
+	struct device_node *node;
+	struct device_node *np;
 	struct device *dev = rsnd_priv_to_dev(priv);
 	struct rsnd_ctu *ctu;
 	struct clk *clk;
@@ -129,20 +93,29 @@ int rsnd_ctu_probe(struct platform_device *pdev,
 	if (rsnd_is_gen1(priv))
 		return 0;
 
-	rsnd_of_parse_ctu(pdev, of_data, priv);
+	node = rsnd_ctu_of_node(priv);
+	if (!node)
+		return 0; /* not used is not error */
 
-	nr = info->ctu_info_nr;
-	if (!nr)
-		return 0;
+	nr = of_get_child_count(node);
+	if (!nr) {
+		ret = -EINVAL;
+		goto rsnd_ctu_probe_done;
+	}
 
 	ctu = devm_kzalloc(dev, sizeof(*ctu) * nr, GFP_KERNEL);
-	if (!ctu)
-		return -ENOMEM;
+	if (!ctu) {
+		ret = -ENOMEM;
+		goto rsnd_ctu_probe_done;
+	}
 
 	priv->ctu_nr	= nr;
 	priv->ctu	= ctu;
 
-	for_each_rsnd_ctu(ctu, priv, i) {
+	i = 0;
+	for_each_child_of_node(node, np) {
+		ctu = rsnd_ctu_get(priv, i);
+
 		/*
 		 * CTU00, CTU01, CTU02, CTU03 => CTU0
 		 * CTU10, CTU11, CTU12, CTU13 => CTU1
@@ -151,18 +124,24 @@ int rsnd_ctu_probe(struct platform_device *pdev,
 			 CTU_NAME, i / 4);
 
 		clk = devm_clk_get(dev, name);
-		if (IS_ERR(clk))
-			return PTR_ERR(clk);
-
-		ctu->info = &info->ctu_info[i];
+		if (IS_ERR(clk)) {
+			ret = PTR_ERR(clk);
+			goto rsnd_ctu_probe_done;
+		}
 
 		ret = rsnd_mod_init(priv, rsnd_mod_get(ctu), &rsnd_ctu_ops,
 				    clk, RSND_MOD_CTU, i);
 		if (ret)
-			return ret;
+			goto rsnd_ctu_probe_done;
+
+		i++;
 	}
 
-	return 0;
+
+rsnd_ctu_probe_done:
+	of_node_put(node);
+
+	return ret;
 }
 
 void rsnd_ctu_remove(struct platform_device *pdev,