clk: mediatek: gate: Consolidate gate type clk related code

Right now some bits of the gate type clk code are in clk-gate.[ch], but
other bits are in clk-mtk.[ch]. This is different from the cpumux and
mux type clks, for which all of the code are found in the same files.

Move the functions that register multiple clks from a given list,
mtk_clk_register_gates_with_dev() and mtk_clk_register_gates(), to
clk-gate.[ch] to consolidate all the code for the gate type clks.

This commit only moves code with minor whitespace fixups to correct
the code style. Further improvements, such as internalizing various
functions and structures will be done in later commits.
Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
Reviewed-by: Miles Chen <miles.chen@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20220208124034.414635-3-wenst@chromium.orgReviewed-by: Chun-Jie Chen <chun-jie.chen@mediatek.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

drivers/clk/mediatek/clk-gate.c

@@ -11,9 +11,9 @@
 #include <linux/slab.h>
 #include <linux/delay.h>
 #include <linux/clkdev.h>
+#include <linux/mfd/syscon.h>
 #include <linux/module.h>
 
-#include "clk-mtk.h"
 #include "clk-gate.h"
 
 static u32 mtk_get_clockgating(struct clk_hw *hw)
@@ -182,4 +182,55 @@ struct clk *mtk_clk_register_gate(
 }
 EXPORT_SYMBOL_GPL(mtk_clk_register_gate);
 
+int mtk_clk_register_gates_with_dev(struct device_node *node,
+				    const struct mtk_gate *clks, int num,
+				    struct clk_onecell_data *clk_data,
+				    struct device *dev)
+{
+	int i;
+	struct clk *clk;
+	struct regmap *regmap;
+
+	if (!clk_data)
+		return -ENOMEM;
+
+	regmap = device_node_to_regmap(node);
+	if (IS_ERR(regmap)) {
+		pr_err("Cannot find regmap for %pOF: %pe\n", node, regmap);
+		return PTR_ERR(regmap);
+	}
+
+	for (i = 0; i < num; i++) {
+		const struct mtk_gate *gate = &clks[i];
+
+		if (!IS_ERR_OR_NULL(clk_data->clks[gate->id]))
+			continue;
+
+		clk = mtk_clk_register_gate(gate->name, gate->parent_name,
+					    regmap,
+					    gate->regs->set_ofs,
+					    gate->regs->clr_ofs,
+					    gate->regs->sta_ofs,
+					    gate->shift, gate->ops,
+					    gate->flags, dev);
+
+		if (IS_ERR(clk)) {
+			pr_err("Failed to register clk %s: %pe\n", gate->name, clk);
+			continue;
+		}
+
+		clk_data->clks[gate->id] = clk;
+	}
+
+	return 0;
+}
+
+int mtk_clk_register_gates(struct device_node *node,
+			   const struct mtk_gate *clks, int num,
+			   struct clk_onecell_data *clk_data)
+{
+	return mtk_clk_register_gates_with_dev(node, clks, num, clk_data, NULL);
+}
+EXPORT_SYMBOL_GPL(mtk_clk_register_gates);
+
 MODULE_LICENSE("GPL");

drivers/clk/mediatek/clk-gate.h

@@ -43,6 +43,22 @@ struct clk *mtk_clk_register_gate(
 		unsigned long flags,
 		struct device *dev);
 
+struct mtk_gate_regs {
+	u32 sta_ofs;
+	u32 clr_ofs;
+	u32 set_ofs;
+};
+
+struct mtk_gate {
+	int id;
+	const char *name;
+	const char *parent_name;
+	const struct mtk_gate_regs *regs;
+	int shift;
+	const struct clk_ops *ops;
+	unsigned long flags;
+};
+
 #define GATE_MTK_FLAGS(_id, _name, _parent, _regs, _shift,	\
 			_ops, _flags) {				\
 		.id = _id,					\
@@ -57,4 +73,13 @@ struct clk *mtk_clk_register_gate(
 #define GATE_MTK(_id, _name, _parent, _regs, _shift, _ops)		\
 	GATE_MTK_FLAGS(_id, _name, _parent, _regs, _shift, _ops, 0)
 
+int mtk_clk_register_gates(struct device_node *node,
+			   const struct mtk_gate *clks, int num,
+			   struct clk_onecell_data *clk_data);
+
+int mtk_clk_register_gates_with_dev(struct device_node *node,
+				    const struct mtk_gate *clks, int num,
+				    struct clk_onecell_data *clk_data,
+				    struct device *dev);
+
 #endif /* __DRV_CLK_GATE_H */

drivers/clk/mediatek/clk-mtk.c

@@ -106,57 +106,6 @@ void mtk_clk_register_factors(const struct mtk_fixed_factor *clks,
 }
 EXPORT_SYMBOL_GPL(mtk_clk_register_factors);
 
-int mtk_clk_register_gates_with_dev(struct device_node *node,
-		const struct mtk_gate *clks,
-		int num, struct clk_onecell_data *clk_data,
-		struct device *dev)
-{
-	int i;
-	struct clk *clk;
-	struct regmap *regmap;
-
-	if (!clk_data)
-		return -ENOMEM;
-
-	regmap = device_node_to_regmap(node);
-	if (IS_ERR(regmap)) {
-		pr_err("Cannot find regmap for %pOF: %pe\n", node, regmap);
-		return PTR_ERR(regmap);
-	}
-
-	for (i = 0; i < num; i++) {
-		const struct mtk_gate *gate = &clks[i];
-
-		if (!IS_ERR_OR_NULL(clk_data->clks[gate->id]))
-			continue;
-
-		clk = mtk_clk_register_gate(gate->name, gate->parent_name,
-				regmap,
-				gate->regs->set_ofs,
-				gate->regs->clr_ofs,
-				gate->regs->sta_ofs,
-				gate->shift, gate->ops, gate->flags, dev);
-
-		if (IS_ERR(clk)) {
-			pr_err("Failed to register clk %s: %pe\n", gate->name, clk);
-			continue;
-		}
-
-		clk_data->clks[gate->id] = clk;
-	}
-
-	return 0;
-}
-
-int mtk_clk_register_gates(struct device_node *node,
-		const struct mtk_gate *clks,
-		int num, struct clk_onecell_data *clk_data)
-{
-	return mtk_clk_register_gates_with_dev(node,
-		clks, num, clk_data, NULL);
-}
-EXPORT_SYMBOL_GPL(mtk_clk_register_gates);
-
 struct clk *mtk_clk_register_composite(const struct mtk_composite *mc,
 		void __iomem *base, spinlock_t *lock)
 {

drivers/clk/mediatek/clk-mtk.h

@@ -150,31 +150,6 @@ void mtk_clk_register_composites(const struct mtk_composite *mcs,
 		int num, void __iomem *base, spinlock_t *lock,
 		struct clk_onecell_data *clk_data);
 
-struct mtk_gate_regs {
-	u32 sta_ofs;
-	u32 clr_ofs;
-	u32 set_ofs;
-};
-
-struct mtk_gate {
-	int id;
-	const char *name;
-	const char *parent_name;
-	const struct mtk_gate_regs *regs;
-	int shift;
-	const struct clk_ops *ops;
-	unsigned long flags;
-};
-
-int mtk_clk_register_gates(struct device_node *node,
-			const struct mtk_gate *clks, int num,
-			struct clk_onecell_data *clk_data);
-
-int mtk_clk_register_gates_with_dev(struct device_node *node,
-		const struct mtk_gate *clks,
-		int num, struct clk_onecell_data *clk_data,
-		struct device *dev);
-
 struct mtk_clk_divider {
 	int id;
 	const char *name;