clk: renesas: r8a7778: Remove struct r8a7778_cpg

All but the data member of the r8a7778_cpg structure are unused, so the
whole structure can be replaced by the single member used.

Remove the mapping of the CPG registers, as no code uses the mapped
registers.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/4123c1c40a901195f00a825d434553d2052829aa.1654694831.git.geert+renesas@glider.be

drivers/clk/renesas/clk-r8a7778.c

@@ -11,12 +11,6 @@
 #include <linux/slab.h>
 #include <linux/soc/renesas/rcar-rst.h>
 
-struct r8a7778_cpg {
-	struct clk_onecell_data data;
-	spinlock_t lock;
-	void __iomem *reg;
-};
-
 /* PLL multipliers per bits 11, 12, and 18 of MODEMR */
 static const struct {
 	unsigned long plla_mult;
@@ -47,8 +41,7 @@ static u32 cpg_mode_rates __initdata;
 static u32 cpg_mode_divs __initdata;
 
 static struct clk * __init
-r8a7778_cpg_register_clock(struct device_node *np, struct r8a7778_cpg *cpg,
-			     const char *name)
+r8a7778_cpg_register_clock(struct device_node *np, const char *name)
 {
 	if (!strcmp(name, "plla")) {
 		return clk_register_fixed_factor(NULL, "plla",
@@ -77,7 +70,7 @@ r8a7778_cpg_register_clock(struct device_node *np, struct r8a7778_cpg *cpg,
 
 static void __init r8a7778_cpg_clocks_init(struct device_node *np)
 {
-	struct r8a7778_cpg *cpg;
+	struct clk_onecell_data *data;
 	struct clk **clks;
 	unsigned int i;
 	int num_clks;
@@ -100,23 +93,17 @@ static void __init r8a7778_cpg_clocks_init(struct device_node *np)
 		return;
 	}
 
-	cpg = kzalloc(sizeof(*cpg), GFP_KERNEL);
+	data = kzalloc(sizeof(*data), GFP_KERNEL);
 	clks = kcalloc(num_clks, sizeof(*clks), GFP_KERNEL);
-	if (cpg == NULL || clks == NULL) {
+	if (data == NULL || clks == NULL) {
 		/* We're leaking memory on purpose, there's no point in cleaning
 		 * up as the system won't boot anyway.
 		 */
 		return;
 	}
 
-	spin_lock_init(&cpg->lock);
-
-	cpg->data.clks = clks;
-	cpg->data.clk_num = num_clks;
-
-	cpg->reg = of_iomap(np, 0);
-	if (WARN_ON(cpg->reg == NULL))
-		return;
+	data->clks = clks;
+	data->clk_num = num_clks;
 
 	for (i = 0; i < num_clks; ++i) {
 		const char *name;
@@ -125,15 +112,15 @@ static void __init r8a7778_cpg_clocks_init(struct device_node *np)
 		of_property_read_string_index(np, "clock-output-names", i,
 					      &name);
 
-		clk = r8a7778_cpg_register_clock(np, cpg, name);
+		clk = r8a7778_cpg_register_clock(np, name);
 		if (IS_ERR(clk))
 			pr_err("%s: failed to register %pOFn %s clock (%ld)\n",
 			       __func__, np, name, PTR_ERR(clk));
 		else
-			cpg->data.clks[i] = clk;
+			data->clks[i] = clk;
 	}
 
-	of_clk_add_provider(np, of_clk_src_onecell_get, &cpg->data);
+	of_clk_add_provider(np, of_clk_src_onecell_get, data);
 
 	cpg_mstp_add_clk_domain(np);
 }