[mirror_ubuntu-bionic-kernel.git] / arch / arm / mach-exynos / clock-exynos4210.c

/*
 * linux/arch/arm/mach-exynos4/clock-exynos4210.c
 *
 * Copyright (c) 2011 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/exynos4.h>
#include <plat/pm.h>

#include <mach/hardware.h>
#include <mach/map.h>
#include <mach/regs-clock.h>
#include <mach/exynos4-clock.h>

static struct sleep_save exynos4210_clock_save[] = {
	SAVE_ITEM(S5P_CLKSRC_IMAGE),
	SAVE_ITEM(S5P_CLKSRC_LCD1),
	SAVE_ITEM(S5P_CLKDIV_IMAGE),
	SAVE_ITEM(S5P_CLKDIV_LCD1),
	SAVE_ITEM(S5P_CLKSRC_MASK_LCD1),
	SAVE_ITEM(S5P_CLKGATE_IP_IMAGE_4210),
	SAVE_ITEM(S5P_CLKGATE_IP_LCD1),
	SAVE_ITEM(S5P_CLKGATE_IP_PERIR_4210),
};

static struct clksrc_clk *sysclks[] = {
	/* nothing here yet */
};

static int exynos4_clksrc_mask_lcd1_ctrl(struct clk *clk, int enable)
{
	return s5p_gatectrl(S5P_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 = &clkset_mout_corebus,
		.reg_src = { .reg = S5P_CLKSRC_FSYS, .shift = 24, .size = 1 },
		.reg_div = { .reg = S5P_CLKDIV_FSYS0, .shift = 20, .size = 4 },
	}, {
		.clk		= {
			.name		= "sclk_fimd",
			.devname	= "exynos4-fb.1",
			.enable		= exynos4_clksrc_mask_lcd1_ctrl,
			.ctrlbit	= (1 << 0),
		},
		.sources = &clkset_group,
		.reg_src = { .reg = S5P_CLKSRC_LCD1, .shift = 0, .size = 4 },
		.reg_div = { .reg = S5P_CLKDIV_LCD1, .shift = 0, .size = 4 },
	},
};

static struct clk init_clocks_off[] = {
	{
		.name		= "sataphy",
		.id		= -1,
		.parent		= &clk_aclk_133.clk,
		.enable		= exynos4_clk_ip_fsys_ctrl,
		.ctrlbit	= (1 << 3),
	}, {
		.name		= "sata",
		.id		= -1,
		.parent		= &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

struct syscore_ops exynos4210_clock_syscore_ops = {
	.suspend	= exynos4210_clock_suspend,
	.resume		= exynos4210_clock_resume,
};

void __init exynos4210_register_clocks(void)
{
	int ptr;

	clk_mout_mpll.reg_src.reg = S5P_CLKSRC_CPU;
	clk_mout_mpll.reg_src.shift = 8;
	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);
}
Commit	Line	Data
2bc02c0d KK	1	/*
	2	* linux/arch/arm/mach-exynos4/clock-exynos4210.c
	3	*
	4	* Copyright (c) 2011 Samsung Electronics Co., Ltd.
	5	* http://www.samsung.com
	6	*
	7	* EXYNOS4210 - Clock support
	8	*
	9	* This program is free software; you can redistribute it and/or modify
	10	* it under the terms of the GNU General Public License version 2 as
	11	* published by the Free Software Foundation.
	12	*/
	13
	14	#include <linux/kernel.h>
	15	#include <linux/err.h>
	16	#include <linux/clk.h>
	17	#include <linux/io.h>
acd35616	18	#include <linux/syscore_ops.h>
2bc02c0d KK	19
	20	#include <plat/cpu-freq.h>
	21	#include <plat/clock.h>
	22	#include <plat/cpu.h>
	23	#include <plat/pll.h>
	24	#include <plat/s5p-clock.h>
	25	#include <plat/clock-clksrc.h>
	26	#include <plat/exynos4.h>
acd35616	27	#include <plat/pm.h>
2bc02c0d KK	28
	29	#include <mach/hardware.h>
	30	#include <mach/map.h>
	31	#include <mach/regs-clock.h>
	32	#include <mach/exynos4-clock.h>
	33
acd35616 JC	34	static struct sleep_save exynos4210_clock_save[] = {
	35	SAVE_ITEM(S5P_CLKSRC_IMAGE),
	36	SAVE_ITEM(S5P_CLKSRC_LCD1),
	37	SAVE_ITEM(S5P_CLKDIV_IMAGE),
	38	SAVE_ITEM(S5P_CLKDIV_LCD1),
	39	SAVE_ITEM(S5P_CLKSRC_MASK_LCD1),
	40	SAVE_ITEM(S5P_CLKGATE_IP_IMAGE_4210),
	41	SAVE_ITEM(S5P_CLKGATE_IP_LCD1),
	42	SAVE_ITEM(S5P_CLKGATE_IP_PERIR_4210),
	43	};
	44
2bc02c0d KK	45	static struct clksrc_clk *sysclks[] = {
	46	/* nothing here yet */
	47	};
	48
	49	static int exynos4_clksrc_mask_lcd1_ctrl(struct clk *clk, int enable)
	50	{
	51	return s5p_gatectrl(S5P_CLKSRC_MASK_LCD1, clk, enable);
	52	}
	53
	54	static struct clksrc_clk clksrcs[] = {
	55	{
	56	.clk = {
	57	.name = "sclk_sata",
	58	.id = -1,
	59	.enable = exynos4_clksrc_mask_fsys_ctrl,
	60	.ctrlbit = (1 << 24),
	61	},
	62	.sources = &clkset_mout_corebus,
	63	.reg_src = { .reg = S5P_CLKSRC_FSYS, .shift = 24, .size = 1 },
	64	.reg_div = { .reg = S5P_CLKDIV_FSYS0, .shift = 20, .size = 4 },
	65	}, {
	66	.clk = {
	67	.name = "sclk_fimd",
	68	.devname = "exynos4-fb.1",
	69	.enable = exynos4_clksrc_mask_lcd1_ctrl,
	70	.ctrlbit = (1 << 0),
	71	},
	72	.sources = &clkset_group,
	73	.reg_src = { .reg = S5P_CLKSRC_LCD1, .shift = 0, .size = 4 },
	74	.reg_div = { .reg = S5P_CLKDIV_LCD1, .shift = 0, .size = 4 },
	75	},
	76	};
	77
	78	static struct clk init_clocks_off[] = {
	79	{
	80	.name = "sataphy",
	81	.id = -1,
	82	.parent = &clk_aclk_133.clk,
	83	.enable = exynos4_clk_ip_fsys_ctrl,
	84	.ctrlbit = (1 << 3),
	85	}, {
	86	.name = "sata",
	87	.id = -1,
	88	.parent = &clk_aclk_133.clk,
	89	.enable = exynos4_clk_ip_fsys_ctrl,
	90	.ctrlbit = (1 << 10),
	91	}, {
	92	.name = "fimd",
	93	.devname = "exynos4-fb.1",
	94	.enable = exynos4_clk_ip_lcd1_ctrl,
	95	.ctrlbit = (1 << 0),
	96	},
	97	};
	98
acd35616 JC	99	#ifdef CONFIG_PM_SLEEP
	100	static int exynos4210_clock_suspend(void)
	101	{
	102	s3c_pm_do_save(exynos4210_clock_save, ARRAY_SIZE(exynos4210_clock_save));
	103
	104	return 0;
	105	}
	106
	107	static void exynos4210_clock_resume(void)
	108	{
	109	s3c_pm_do_restore_core(exynos4210_clock_save, ARRAY_SIZE(exynos4210_clock_save));
	110	}
	111
	112	#else
	113	#define exynos4210_clock_suspend NULL
	114	#define exynos4210_clock_resume NULL
	115	#endif
	116
	117	struct syscore_ops exynos4210_clock_syscore_ops = {
	118	.suspend = exynos4210_clock_suspend,
	119	.resume = exynos4210_clock_resume,
	120	};
	121
2bc02c0d KK	122	void __init exynos4210_register_clocks(void)
	123	{
	124	int ptr;
	125
	126	clk_mout_mpll.reg_src.reg = S5P_CLKSRC_CPU;
	127	clk_mout_mpll.reg_src.shift = 8;
	128	clk_mout_mpll.reg_src.size = 1;
	129
	130	for (ptr = 0; ptr < ARRAY_SIZE(sysclks); ptr++)
	131	s3c_register_clksrc(sysclks[ptr], 1);
	132
	133	s3c_register_clksrc(clksrcs, ARRAY_SIZE(clksrcs));
	134
	135	s3c_register_clocks(init_clocks_off, ARRAY_SIZE(init_clocks_off));
	136	s3c_disable_clocks(init_clocks_off, ARRAY_SIZE(init_clocks_off));
acd35616 JC	137
acd35616 JC	138	register_syscore_ops(&exynos4210_clock_syscore_ops);
2bc02c0d	139	}