clock-exynos4210.c
3.32 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
/*
* 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/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 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);
}