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/*
* Copyright (c) 2011-2012 Samsung Electronics Co., Ltd.
* http://www.samsung.com
*
* EXYNOS4210 - 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 "common.h"
#include "clock-exynos4.h"
#ifdef CONFIG_PM_SLEEP
static struct sleep_save exynos4210_clock_save[] = {
SAVE_ITEM(EXYNOS4_CLKSRC_IMAGE),
SAVE_ITEM(EXYNOS4_CLKDIV_IMAGE),
SAVE_ITEM(EXYNOS4210_CLKSRC_LCD1),
SAVE_ITEM(EXYNOS4210_CLKDIV_LCD1),
SAVE_ITEM(EXYNOS4210_CLKSRC_MASK_LCD1),
SAVE_ITEM(EXYNOS4210_CLKGATE_IP_IMAGE),
SAVE_ITEM(EXYNOS4210_CLKGATE_IP_LCD1),
SAVE_ITEM(EXYNOS4210_CLKGATE_IP_PERIR),
};
#endif
static struct clksrc_clk *sysclks[] = {
/* nothing here yet */
};
static int exynos4_clksrc_mask_lcd1_ctrl(struct clk *clk, int enable)
{
return s5p_gatectrl(EXYNOS4210_CLKSRC_MASK_LCD1, clk, enable);
}
static struct clksrc_clk clksrcs[] = {
{
.clk = {
.name = "sclk_sata",
.id = -1,
.enable = exynos4_clksrc_mask_fsys_ctrl,
.ctrlbit = (1 << 24),
},
.sources = &exynos4_clkset_mout_corebus,
.reg_src = { .reg = EXYNOS4_CLKSRC_FSYS, .shift = 24, .size = 1 },
.reg_div = { .reg = EXYNOS4_CLKDIV_FSYS0, .shift = 20, .size = 4 },
}, {
.clk = {
.name = "sclk_fimd",
.devname = "exynos4-fb.1",
.enable = exynos4_clksrc_mask_lcd1_ctrl,
.ctrlbit = (1 << 0),
},
.sources = &exynos4_clkset_group,
.reg_src = { .reg = EXYNOS4210_CLKSRC_LCD1, .shift = 0, .size = 4 },
.reg_div = { .reg = EXYNOS4210_CLKDIV_LCD1, .shift = 0, .size = 4 },
},
};
static struct clk init_clocks_off[] = {
{
.name = "sataphy",
.id = -1,
.parent = &exynos4_clk_aclk_133.clk,
.enable = exynos4_clk_ip_fsys_ctrl,
.ctrlbit = (1 << 3),
}, {
.name = "sata",
.id = -1,
.parent = &exynos4_clk_aclk_133.clk,
.enable = exynos4_clk_ip_fsys_ctrl,
.ctrlbit = (1 << 10),
}, {
.name = "fimd",
.devname = "exynos4-fb.1",
.enable = exynos4_clk_ip_lcd1_ctrl,
.ctrlbit = (1 << 0),
},
};
#ifdef CONFIG_PM_SLEEP
static int exynos4210_clock_suspend(void)
{
s3c_pm_do_save(exynos4210_clock_save, ARRAY_SIZE(exynos4210_clock_save));
return 0;
}
static void exynos4210_clock_resume(void)
{
s3c_pm_do_restore_core(exynos4210_clock_save, ARRAY_SIZE(exynos4210_clock_save));
}
#else
#define exynos4210_clock_suspend NULL
#define exynos4210_clock_resume NULL
#endif
static struct syscore_ops exynos4210_clock_syscore_ops = {
.suspend = exynos4210_clock_suspend,
.resume = exynos4210_clock_resume,
};
void __init exynos4210_register_clocks(void)
{
int ptr;
exynos4_clk_mout_mpll.reg_src.reg = EXYNOS4_CLKSRC_CPU;
exynos4_clk_mout_mpll.reg_src.shift = 8;
exynos4_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(&exynos4210_clock_syscore_ops);
}
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