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

/*
 * 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);
}
Commit	Line	Data
2bc02c0d	1	/*
a855039e	2	* Copyright (c) 2011-2012 Samsung Electronics Co., Ltd.
2bc02c0d KK	3	* http://www.samsung.com
	4	*
	5	* EXYNOS4210 - Clock support
	6	*
	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License version 2 as
	9	* published by the Free Software Foundation.
	10	*/
	11
	12	#include <linux/kernel.h>
	13	#include <linux/err.h>
	14	#include <linux/clk.h>
	15	#include <linux/io.h>
acd35616	16	#include <linux/syscore_ops.h>
2bc02c0d KK	17
	18	#include <plat/cpu-freq.h>
	19	#include <plat/clock.h>
	20	#include <plat/cpu.h>
	21	#include <plat/pll.h>
	22	#include <plat/s5p-clock.h>
	23	#include <plat/clock-clksrc.h>
acd35616	24	#include <plat/pm.h>
2bc02c0d KK	25
	26	#include <mach/hardware.h>
	27	#include <mach/map.h>
	28	#include <mach/regs-clock.h>
2bc02c0d	29
cc511b8d	30	#include "common.h"
ce9c00ee	31	#include "clock-exynos4.h"
cc511b8d	32
7cdf04d7	33	#ifdef CONFIG_PM_SLEEP
acd35616	34	static struct sleep_save exynos4210_clock_save[] = {
a855039e KK	35	SAVE_ITEM(EXYNOS4_CLKSRC_IMAGE),
	36	SAVE_ITEM(EXYNOS4_CLKDIV_IMAGE),
	37	SAVE_ITEM(EXYNOS4210_CLKSRC_LCD1),
	38	SAVE_ITEM(EXYNOS4210_CLKDIV_LCD1),
	39	SAVE_ITEM(EXYNOS4210_CLKSRC_MASK_LCD1),
	40	SAVE_ITEM(EXYNOS4210_CLKGATE_IP_IMAGE),
	41	SAVE_ITEM(EXYNOS4210_CLKGATE_IP_LCD1),
	42	SAVE_ITEM(EXYNOS4210_CLKGATE_IP_PERIR),
acd35616	43	};
7cdf04d7	44	#endif
acd35616	45
2bc02c0d KK	46	static struct clksrc_clk *sysclks[] = {
	47	/* nothing here yet */
	48	};
	49
	50	static int exynos4_clksrc_mask_lcd1_ctrl(struct clk *clk, int enable)
	51	{
a855039e	52	return s5p_gatectrl(EXYNOS4210_CLKSRC_MASK_LCD1, clk, enable);
2bc02c0d KK	53	}
	54
	55	static struct clksrc_clk clksrcs[] = {
	56	{
	57	.clk = {
	58	.name = "sclk_sata",
	59	.id = -1,
	60	.enable = exynos4_clksrc_mask_fsys_ctrl,
	61	.ctrlbit = (1 << 24),
	62	},
a855039e KK	63	.sources = &exynos4_clkset_mout_corebus,
	64	.reg_src = { .reg = EXYNOS4_CLKSRC_FSYS, .shift = 24, .size = 1 },
	65	.reg_div = { .reg = EXYNOS4_CLKDIV_FSYS0, .shift = 20, .size = 4 },
2bc02c0d KK	66	}, {
	67	.clk = {
	68	.name = "sclk_fimd",
	69	.devname = "exynos4-fb.1",
	70	.enable = exynos4_clksrc_mask_lcd1_ctrl,
	71	.ctrlbit = (1 << 0),
	72	},
a855039e KK	73	.sources = &exynos4_clkset_group,
	74	.reg_src = { .reg = EXYNOS4210_CLKSRC_LCD1, .shift = 0, .size = 4 },
	75	.reg_div = { .reg = EXYNOS4210_CLKDIV_LCD1, .shift = 0, .size = 4 },
2bc02c0d KK	76	},
	77	};
	78
	79	static struct clk init_clocks_off[] = {
	80	{
	81	.name = "sataphy",
	82	.id = -1,
a855039e	83	.parent = &exynos4_clk_aclk_133.clk,
2bc02c0d KK	84	.enable = exynos4_clk_ip_fsys_ctrl,
	85	.ctrlbit = (1 << 3),
	86	}, {
	87	.name = "sata",
	88	.id = -1,
a855039e	89	.parent = &exynos4_clk_aclk_133.clk,
2bc02c0d KK	90	.enable = exynos4_clk_ip_fsys_ctrl,
	91	.ctrlbit = (1 << 10),
	92	}, {
	93	.name = "fimd",
	94	.devname = "exynos4-fb.1",
	95	.enable = exynos4_clk_ip_lcd1_ctrl,
	96	.ctrlbit = (1 << 0),
	97	},
	98	};
	99
acd35616 JC	100	#ifdef CONFIG_PM_SLEEP
	101	static int exynos4210_clock_suspend(void)
	102	{
	103	s3c_pm_do_save(exynos4210_clock_save, ARRAY_SIZE(exynos4210_clock_save));
	104
	105	return 0;
	106	}
	107
	108	static void exynos4210_clock_resume(void)
	109	{
	110	s3c_pm_do_restore_core(exynos4210_clock_save, ARRAY_SIZE(exynos4210_clock_save));
	111	}
	112
	113	#else
	114	#define exynos4210_clock_suspend NULL
	115	#define exynos4210_clock_resume NULL
	116	#endif
	117
e745e06f	118	static struct syscore_ops exynos4210_clock_syscore_ops = {
acd35616 JC	119	.suspend = exynos4210_clock_suspend,
	120	.resume = exynos4210_clock_resume,
	121	};
	122
2bc02c0d KK	123	void __init exynos4210_register_clocks(void)
	124	{
	125	int ptr;
	126
a855039e KK	127	exynos4_clk_mout_mpll.reg_src.reg = EXYNOS4_CLKSRC_CPU;
	128	exynos4_clk_mout_mpll.reg_src.shift = 8;
	129	exynos4_clk_mout_mpll.reg_src.size = 1;
2bc02c0d KK	130
	131	for (ptr = 0; ptr < ARRAY_SIZE(sysclks); ptr++)
	132	s3c_register_clksrc(sysclks[ptr], 1);
	133
	134	s3c_register_clksrc(clksrcs, ARRAY_SIZE(clksrcs));
	135
	136	s3c_register_clocks(init_clocks_off, ARRAY_SIZE(init_clocks_off));
	137	s3c_disable_clocks(init_clocks_off, ARRAY_SIZE(init_clocks_off));
acd35616 JC	138
acd35616 JC	139	register_syscore_ops(&exynos4210_clock_syscore_ops);
2bc02c0d	140	}