ARM: S5P: Reduce duplicated EPLL control codes

S5P Samsung SoCs has a EPLL to support various PLL clock sources for other
H/W blocks. Until now, to control EPLL, each of SoCs make their own functions
in 'mach-s5pxxx/clock.c'. But some of functions, 'xxx_epll_get_rate()' and
'xxx_epll_enable()', are exactly same in all S5P SoCs, so this patch move
these duplicated codes to common EPLL functions that use platform wide.

Signed-off-by: Seungwhan Youn <sw.youn@samsung.com>
Acked-by: Jassi Brar <jassi.brar@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

arch/arm/mach-s5p64x0/clock-s5p6440.c

@@ -85,7 +85,7 @@ static int s5p6440_epll_set_rate(struct clk *clk, unsigned long rate)
 }
 
 static struct clk_ops s5p6440_epll_ops = {
-	.get_rate = s5p64x0_epll_get_rate,
+	.get_rate = s5p_epll_get_rate,
 	.set_rate = s5p6440_epll_set_rate,
 };
 
@@ -548,7 +548,7 @@ void __init_or_cpufreq s5p6440_setup_clocks(void)
 
 	/* Set S5P6440 functions for clk_fout_epll */
 
-	clk_fout_epll.enable = s5p64x0_epll_enable;
+	clk_fout_epll.enable = s5p_epll_enable;
 	clk_fout_epll.ops = &s5p6440_epll_ops;
 
 	clk_48m.enable = s5p64x0_clk48m_ctrl;

arch/arm/mach-s5p64x0/clock-s5p6450.c

@@ -86,7 +86,7 @@ static int s5p6450_epll_set_rate(struct clk *clk, unsigned long rate)
 }
 
 static struct clk_ops s5p6450_epll_ops = {
-	.get_rate = s5p64x0_epll_get_rate,
+	.get_rate = s5p_epll_get_rate,
 	.set_rate = s5p6450_epll_set_rate,
 };
 
@@ -581,7 +581,7 @@ void __init_or_cpufreq s5p6450_setup_clocks(void)
 
 	/* Set S5P6450 functions for clk_fout_epll */
 
-	clk_fout_epll.enable = s5p64x0_epll_enable;
+	clk_fout_epll.enable = s5p_epll_enable;
 	clk_fout_epll.ops = &s5p6450_epll_ops;
 
 	clk_48m.enable = s5p64x0_clk48m_ctrl;

arch/arm/mach-s5p64x0/clock.c

@@ -73,24 +73,6 @@ static const u32 clock_table[][3] = {
 	{L2 * 1000, (3 << ARM_DIV_RATIO_SHIFT), (0 << S5P64X0_CLKDIV0_HCLK_SHIFT)},
 };
 
-int s5p64x0_epll_enable(struct clk *clk, int enable)
-{
-	unsigned int ctrlbit = clk->ctrlbit;
-	unsigned int epll_con = __raw_readl(S5P64X0_EPLL_CON) & ~ctrlbit;
-
-	if (enable)
-		__raw_writel(epll_con | ctrlbit, S5P64X0_EPLL_CON);
-	else
-		__raw_writel(epll_con, S5P64X0_EPLL_CON);
-
-	return 0;
-}
-
-unsigned long s5p64x0_epll_get_rate(struct clk *clk)
-{
-	return clk->rate;
-}
-
 unsigned long s5p64x0_armclk_get_rate(struct clk *clk)
 {
 	unsigned long rate = clk_get_rate(clk->parent);

arch/arm/mach-s5p64x0/include/mach/regs-clock.h

@@ -60,4 +60,6 @@
 #define ARM_DIV_RATIO_SHIFT		0
 #define ARM_DIV_MASK			(0xF << ARM_DIV_RATIO_SHIFT)
 
+#define S5P_EPLL_CON			S5P64X0_EPLL_CON
+
 #endif /* __ASM_ARCH_REGS_CLOCK_H */

arch/arm/mach-s5pc100/clock.c

@@ -273,24 +273,6 @@ static struct clksrc_clk clk_div_hdmi = {
 	.reg_div = { .reg = S5P_CLK_DIV3, .shift = 28, .size = 4 },
 };
 
-static int s5pc100_epll_enable(struct clk *clk, int enable)
-{
-	unsigned int ctrlbit = clk->ctrlbit;
-	unsigned int epll_con = __raw_readl(S5P_EPLL_CON) & ~ctrlbit;
-
-	if (enable)
-		__raw_writel(epll_con | ctrlbit, S5P_EPLL_CON);
-	else
-		__raw_writel(epll_con, S5P_EPLL_CON);
-
-	return 0;
-}
-
-static unsigned long s5pc100_epll_get_rate(struct clk *clk)
-{
-	return clk->rate;
-}
-
 static u32 epll_div[][4] = {
 	{ 32750000,	131, 3, 4 },
 	{ 32768000,	131, 3, 4 },
@@ -347,7 +329,7 @@ static int s5pc100_epll_set_rate(struct clk *clk, unsigned long rate)
 }
 
 static struct clk_ops s5pc100_epll_ops = {
-	.get_rate = s5pc100_epll_get_rate,
+	.get_rate = s5p_epll_get_rate,
 	.set_rate = s5pc100_epll_set_rate,
 };
 
@@ -1261,7 +1243,7 @@ void __init_or_cpufreq s5pc100_setup_clocks(void)
 	unsigned int ptr;
 
 	/* Set S5PC100 functions for clk_fout_epll */
-	clk_fout_epll.enable = s5pc100_epll_enable;
+	clk_fout_epll.enable = s5p_epll_enable;
 	clk_fout_epll.ops = &s5pc100_epll_ops;
 
 	printk(KERN_DEBUG "%s: registering clocks\n", __func__);

arch/arm/mach-s5pv310/include/mach/regs-clock.h

@@ -84,4 +84,8 @@
 
 #define S5P_CLKGATE_SCLKCPU		S5P_CLKREG(0x14800)
 
+/* Compatibility defines */
+
+#define S5P_EPLL_CON			S5P_EPLL_CON0
+
 #endif /* __ASM_ARCH_REGS_CLOCK_H */

arch/arm/plat-s5p/clock.c

@@ -21,6 +21,8 @@
 #include <linux/io.h>
 #include <asm/div64.h>
 
+#include <mach/regs-clock.h>
+
 #include <plat/clock.h>
 #include <plat/clock-clksrc.h>
 #include <plat/s5p-clock.h>
@@ -148,6 +150,24 @@ int s5p_gatectrl(void __iomem *reg, struct clk *clk, int enable)
 	return 0;
 }
 
+int s5p_epll_enable(struct clk *clk, int enable)
+{
+	unsigned int ctrlbit = clk->ctrlbit;
+	unsigned int epll_con = __raw_readl(S5P_EPLL_CON) & ~ctrlbit;
+
+	if (enable)
+		__raw_writel(epll_con | ctrlbit, S5P_EPLL_CON);
+	else
+		__raw_writel(epll_con, S5P_EPLL_CON);
+
+	return 0;
+}
+
+unsigned long s5p_epll_get_rate(struct clk *clk)
+{
+	return clk->rate;
+}
+
 static struct clk *s5p_clks[] __initdata = {
 	&clk_ext_xtal_mux,
 	&clk_48m,

arch/arm/plat-s5p/include/plat/s5p-clock.h

@@ -43,4 +43,8 @@ extern struct clksrc_sources clk_src_dpll;
 
 extern int s5p_gatectrl(void __iomem *reg, struct clk *clk, int enable);
 
+/* Common EPLL operations for S5P platform */
+extern int s5p_epll_enable(struct clk *clk, int enable);
+extern unsigned long s5p_epll_get_rate(struct clk *clk);
+
 #endif /* __ASM_PLAT_S5P_CLOCK_H */