clk: mediatek: gate: Internalize clk implementation

struct mtk_clk_gate and mtk_clk_register_gate() are not used outside of
the gate clk library. Only the API that handles a list of clks is used
by the individual platform clk drivers.

Internalize the parts that aren't used outside of the implementation.
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/20220208124034.414635-4-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

@@ -11,11 +11,28 @@
 #include <linux/slab.h>
 #include <linux/delay.h>
 #include <linux/clkdev.h>
+#include <linux/clk-provider.h>
+#include <linux/container_of.h>
 #include <linux/mfd/syscon.h>
 #include <linux/module.h>
+#include <linux/regmap.h>
 
 #include "clk-gate.h"
 
+struct mtk_clk_gate {
+	struct clk_hw	hw;
+	struct regmap	*regmap;
+	int		set_ofs;
+	int		clr_ofs;
+	int		sta_ofs;
+	u8		bit;
+};
+
+static inline struct mtk_clk_gate *to_mtk_clk_gate(struct clk_hw *hw)
+{
+	return container_of(hw, struct mtk_clk_gate, hw);
+}
+
 static u32 mtk_get_clockgating(struct clk_hw *hw)
 {
 	struct mtk_clk_gate *cg = to_mtk_clk_gate(hw);
@@ -140,17 +157,12 @@ const struct clk_ops mtk_clk_gate_ops_no_setclr_inv = {
 };
 EXPORT_SYMBOL_GPL(mtk_clk_gate_ops_no_setclr_inv);
 
-struct clk *mtk_clk_register_gate(
-		const char *name,
-		const char *parent_name,
-		struct regmap *regmap,
-		int set_ofs,
-		int clr_ofs,
-		int sta_ofs,
-		u8 bit,
-		const struct clk_ops *ops,
-		unsigned long flags,
-		struct device *dev)
+static struct clk *mtk_clk_register_gate(const char *name,
+					 const char *parent_name,
+					 struct regmap *regmap, int set_ofs,
+					 int clr_ofs, int sta_ofs, u8 bit,
+					 const struct clk_ops *ops,
+					 unsigned long flags, struct device *dev)
 {
 	struct mtk_clk_gate *cg;
 	struct clk *clk;
@@ -180,7 +192,6 @@ struct clk *mtk_clk_register_gate(
 
 	return clk;
 }
-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,

drivers/clk/mediatek/clk-gate.h

@@ -7,42 +7,15 @@
 #ifndef __DRV_CLK_GATE_H
 #define __DRV_CLK_GATE_H
 
-#include <linux/regmap.h>
 #include <linux/clk-provider.h>
-
-struct clk;
-
-struct mtk_clk_gate {
-	struct clk_hw	hw;
-	struct regmap	*regmap;
-	int		set_ofs;
-	int		clr_ofs;
-	int		sta_ofs;
-	u8		bit;
-};
-
-static inline struct mtk_clk_gate *to_mtk_clk_gate(struct clk_hw *hw)
-{
-	return container_of(hw, struct mtk_clk_gate, hw);
-}
+#include <linux/device.h>
+#include <linux/of.h>
 
 extern const struct clk_ops mtk_clk_gate_ops_setclr;
 extern const struct clk_ops mtk_clk_gate_ops_setclr_inv;
 extern const struct clk_ops mtk_clk_gate_ops_no_setclr;
 extern const struct clk_ops mtk_clk_gate_ops_no_setclr_inv;
 
-struct clk *mtk_clk_register_gate(
-		const char *name,
-		const char *parent_name,
-		struct regmap *regmap,
-		int set_ofs,
-		int clr_ofs,
-		int sta_ofs,
-		u8 bit,
-		const struct clk_ops *ops,
-		unsigned long flags,
-		struct device *dev);
-
 struct mtk_gate_regs {
 	u32 sta_ofs;
 	u32 clr_ofs;