clk: samsung: Use common registration function for pll2550x

There is no such significant differences in pll2550x PLL type
to justify a separate registration function.  This patch adapts
exynos5440 driver to use the common function and removes
samsung_clk_register_pll2550x().
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>

drivers/clk/samsung/clk-exynos5440.c

@@ -112,6 +112,11 @@ static struct notifier_block exynos5440_clk_restart_handler = {
 	.priority = 128,
 };
 
+static const struct samsung_pll_clock exynos5440_plls[] __initconst = {
+	PLL(pll_2550x, CLK_CPLLA, "cplla", "xtal", 0, 0x4c, NULL),
+	PLL(pll_2550x, CLK_CPLLB, "cpllb", "xtal", 0, 0x50, NULL),
+};
+
 /* register exynos5440 clocks */
 static void __init exynos5440_clk_init(struct device_node *np)
 {
@@ -129,8 +134,8 @@ static void __init exynos5440_clk_init(struct device_node *np)
 	samsung_clk_of_register_fixed_ext(ctx, exynos5440_fixed_rate_ext_clks,
 		ARRAY_SIZE(exynos5440_fixed_rate_ext_clks), ext_clk_match);
 
-	samsung_clk_register_pll2550x("cplla", "xtal", reg_base + 0x1c, 0x10);
-	samsung_clk_register_pll2550x("cpllb", "xtal", reg_base + 0x20, 0x10);
+	samsung_clk_register_pll(ctx, exynos5440_plls,
+			ARRAY_SIZE(exynos5440_plls), ctx->reg_base);
 
 	samsung_clk_register_fixed_rate(ctx, exynos5440_fixed_rate_clks,
 			ARRAY_SIZE(exynos5440_fixed_rate_clks));

drivers/clk/samsung/clk-pll.c

@@ -890,22 +890,14 @@ static const struct clk_ops samsung_s3c2440_mpll_clk_ops = {
 #define PLL2550X_M_SHIFT      (4)
 #define PLL2550X_S_SHIFT      (0)
 
-struct samsung_clk_pll2550x {
-	struct clk_hw		hw;
-	const void __iomem	*reg_base;
-	unsigned long		offset;
-};
-
-#define to_clk_pll2550x(_hw) container_of(_hw, struct samsung_clk_pll2550x, hw)
-
 static unsigned long samsung_pll2550x_recalc_rate(struct clk_hw *hw,
 				unsigned long parent_rate)
 {
-	struct samsung_clk_pll2550x *pll = to_clk_pll2550x(hw);
+	struct samsung_clk_pll *pll = to_clk_pll(hw);
 	u32 r, p, m, s, pll_stat;
 	u64 fvco = parent_rate;
 
-	pll_stat = readl_relaxed(pll->reg_base + pll->offset * 3);
+	pll_stat = readl_relaxed(pll->con_reg);
 	r = (pll_stat >> PLL2550X_R_SHIFT) & PLL2550X_R_MASK;
 	if (!r)
 		return 0;
@@ -923,43 +915,6 @@ static const struct clk_ops samsung_pll2550x_clk_ops = {
 	.recalc_rate = samsung_pll2550x_recalc_rate,
 };
 
-struct clk * __init samsung_clk_register_pll2550x(const char *name,
-			const char *pname, const void __iomem *reg_base,
-			const unsigned long offset)
-{
-	struct samsung_clk_pll2550x *pll;
-	struct clk *clk;
-	struct clk_init_data init;
-
-	pll = kzalloc(sizeof(*pll), GFP_KERNEL);
-	if (!pll) {
-		pr_err("%s: could not allocate pll clk %s\n", __func__, name);
-		return NULL;
-	}
-
-	init.name = name;
-	init.ops = &samsung_pll2550x_clk_ops;
-	init.flags = CLK_GET_RATE_NOCACHE;
-	init.parent_names = &pname;
-	init.num_parents = 1;
-
-	pll->hw.init = &init;
-	pll->reg_base = reg_base;
-	pll->offset = offset;
-
-	clk = clk_register(NULL, &pll->hw);
-	if (IS_ERR(clk)) {
-		pr_err("%s: failed to register pll clock %s\n", __func__,
-				name);
-		kfree(pll);
-	}
-
-	if (clk_register_clkdev(clk, name, NULL))
-		pr_err("%s: failed to register lookup for %s", __func__, name);
-
-	return clk;
-}
-
 /*
  * PLL2550xx Clock Type
  */
@@ -1263,6 +1218,9 @@ static void __init _samsung_clk_register_pll(struct samsung_clk_provider *ctx,
 		else
 			init.ops = &samsung_s3c2440_mpll_clk_ops;
 		break;
+	case pll_2550x:
+		init.ops = &samsung_pll2550x_clk_ops;
+		break;
 	case pll_2550xx:
 		if (!pll->rate_table)
 			init.ops = &samsung_pll2550xx_clk_min_ops;

drivers/clk/samsung/clk-pll.h

@@ -31,6 +31,7 @@ enum samsung_pll_type {
 	pll_s3c2410_mpll,
 	pll_s3c2410_upll,
 	pll_s3c2440_mpll,
+	pll_2550x,
 	pll_2550xx,
 	pll_2650xx,
 	pll_1450x,

include/dt-bindings/clock/exynos5440.h

@@ -14,6 +14,8 @@
 
 #define CLK_XTAL		1
 #define CLK_ARM_CLK		2
+#define CLK_CPLLA		3
+#define CLK_CPLLB		4
 #define CLK_SPI_BAUD		16
 #define CLK_PB0_250		17
 #define CLK_PR0_250		18