clock-exynos4212.c
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/*
* linux/arch/arm/mach-exynos4/clock-exynos4212.c
*
* Copyright (c) 2011 Samsung Electronics Co., Ltd.
* http://www.samsung.com
*
* EXYNOS4212 - Clock support
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/kernel.h>
#include <linux/err.h>
#include <linux/clk.h>
#include <linux/io.h>
#include <linux/syscore_ops.h>
#include <plat/cpu-freq.h>
#include <plat/clock.h>
#include <plat/cpu.h>
#include <plat/pll.h>
#include <plat/s5p-clock.h>
#include <plat/clock-clksrc.h>
#include <plat/pm.h>
#include <mach/hardware.h>
#include <mach/map.h>
#include <mach/regs-clock.h>
#include <mach/exynos4-clock.h>
#include "common.h"
static struct sleep_save exynos4212_clock_save[] = {
SAVE_ITEM(S5P_CLKSRC_IMAGE),
SAVE_ITEM(S5P_CLKDIV_IMAGE),
SAVE_ITEM(S5P_CLKGATE_IP_IMAGE_4212),
SAVE_ITEM(S5P_CLKGATE_IP_PERIR_4212),
};
static struct clk *clk_src_mpll_user_list[] = {
[0] = &clk_fin_mpll,
[1] = &clk_mout_mpll.clk,
};
static struct clksrc_sources clk_src_mpll_user = {
.sources = clk_src_mpll_user_list,
.nr_sources = ARRAY_SIZE(clk_src_mpll_user_list),
};
static struct clksrc_clk clk_mout_mpll_user = {
.clk = {
.name = "mout_mpll_user",
},
.sources = &clk_src_mpll_user,
.reg_src = { .reg = S5P_CLKSRC_CPU, .shift = 24, .size = 1 },
};
static struct clksrc_clk *sysclks[] = {
&clk_mout_mpll_user,
};
static struct clksrc_clk clksrcs[] = {
/* nothing here yet */
};
static struct clk init_clocks_off[] = {
/* nothing here yet */
};
#ifdef CONFIG_PM_SLEEP
static int exynos4212_clock_suspend(void)
{
s3c_pm_do_save(exynos4212_clock_save, ARRAY_SIZE(exynos4212_clock_save));
return 0;
}
static void exynos4212_clock_resume(void)
{
s3c_pm_do_restore_core(exynos4212_clock_save, ARRAY_SIZE(exynos4212_clock_save));
}
#else
#define exynos4212_clock_suspend NULL
#define exynos4212_clock_resume NULL
#endif
struct syscore_ops exynos4212_clock_syscore_ops = {
.suspend = exynos4212_clock_suspend,
.resume = exynos4212_clock_resume,
};
void __init exynos4212_register_clocks(void)
{
int ptr;
/* usbphy1 is removed */
clkset_group_list[4] = NULL;
/* mout_mpll_user is used */
clkset_group_list[6] = &clk_mout_mpll_user.clk;
clkset_aclk_top_list[0] = &clk_mout_mpll_user.clk;
clk_mout_mpll.reg_src.reg = S5P_CLKSRC_DMC;
clk_mout_mpll.reg_src.shift = 12;
clk_mout_mpll.reg_src.size = 1;
for (ptr = 0; ptr < ARRAY_SIZE(sysclks); ptr++)
s3c_register_clksrc(sysclks[ptr], 1);
s3c_register_clksrc(clksrcs, ARRAY_SIZE(clksrcs));
s3c_register_clocks(init_clocks_off, ARRAY_SIZE(init_clocks_off));
s3c_disable_clocks(init_clocks_off, ARRAY_SIZE(init_clocks_off));
register_syscore_ops(&exynos4212_clock_syscore_ops);
}