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ARM: S5P: Reduce duplicated EPLL control codes

Browse source 
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>
This commit is contained in:
Seungwhan Youn 2010-10-14 10:39:08 +09:00 committed by Kukjin Kim
parent 900fa0196c
commit d4b34c6c84
8 changed files with 36 additions and 42 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
arch/arm/mach-s5p64x0/clock-s5p6440.c
View file

@ -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;

4
arch/arm/mach-s5p64x0/clock-s5p6450.c
View file

@ -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;

18
arch/arm/mach-s5p64x0/clock.c
View file

@ -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);

2
arch/arm/mach-s5p64x0/include/mach/regs-clock.h
View file

@ -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 */

22
arch/arm/mach-s5pc100/clock.c
View file

@ -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__);

4
arch/arm/mach-s5pv310/include/mach/regs-clock.h
View file

@ -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 */

20
arch/arm/plat-s5p/clock.c
View file

@ -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,

4
arch/arm/plat-s5p/include/plat/s5p-clock.h
View file

@ -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 */