]> Pileus Git - ~andy/linux/blob - arch/arm/mach-exynos/clock-exynos4212.c
Merge tag 'ktest-v3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt...
[~andy/linux] / arch / arm / mach-exynos / clock-exynos4212.c
1 /*
2  * Copyright (c) 2011-2012 Samsung Electronics Co., Ltd.
3  *              http://www.samsung.com
4  *
5  * EXYNOS4212 - 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>
16 #include <linux/syscore_ops.h>
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>
24 #include <plat/pm.h>
25
26 #include <mach/hardware.h>
27 #include <mach/map.h>
28 #include <mach/regs-clock.h>
29
30 #include "common.h"
31 #include "clock-exynos4.h"
32
33 #ifdef CONFIG_PM_SLEEP
34 static struct sleep_save exynos4212_clock_save[] = {
35         SAVE_ITEM(EXYNOS4_CLKSRC_IMAGE),
36         SAVE_ITEM(EXYNOS4_CLKDIV_IMAGE),
37         SAVE_ITEM(EXYNOS4212_CLKGATE_IP_IMAGE),
38         SAVE_ITEM(EXYNOS4212_CLKGATE_IP_PERIR),
39 };
40 #endif
41
42 static int exynos4212_clk_ip_isp0_ctrl(struct clk *clk, int enable)
43 {
44         return s5p_gatectrl(EXYNOS4_CLKGATE_IP_ISP0, clk, enable);
45 }
46
47 static int exynos4212_clk_ip_isp1_ctrl(struct clk *clk, int enable)
48 {
49         return s5p_gatectrl(EXYNOS4_CLKGATE_IP_ISP1, clk, enable);
50 }
51
52 static struct clk *clk_src_mpll_user_list[] = {
53         [0] = &clk_fin_mpll,
54         [1] = &exynos4_clk_mout_mpll.clk,
55 };
56
57 static struct clksrc_sources clk_src_mpll_user = {
58         .sources        = clk_src_mpll_user_list,
59         .nr_sources     = ARRAY_SIZE(clk_src_mpll_user_list),
60 };
61
62 static struct clksrc_clk clk_mout_mpll_user = {
63         .clk = {
64                 .name           = "mout_mpll_user",
65         },
66         .sources        = &clk_src_mpll_user,
67         .reg_src        = { .reg = EXYNOS4_CLKSRC_CPU, .shift = 24, .size = 1 },
68 };
69
70 static struct clksrc_clk exynos4x12_clk_mout_g2d0 = {
71         .clk    = {
72                 .name           = "mout_g2d0",
73         },
74         .sources = &exynos4_clkset_mout_g2d0,
75         .reg_src = { .reg = EXYNOS4_CLKSRC_DMC, .shift = 20, .size = 1 },
76 };
77
78 static struct clksrc_clk exynos4x12_clk_mout_g2d1 = {
79         .clk    = {
80                 .name           = "mout_g2d1",
81         },
82         .sources = &exynos4_clkset_mout_g2d1,
83         .reg_src = { .reg = EXYNOS4_CLKSRC_DMC, .shift = 24, .size = 1 },
84 };
85
86 static struct clk *exynos4x12_clkset_mout_g2d_list[] = {
87         [0] = &exynos4x12_clk_mout_g2d0.clk,
88         [1] = &exynos4x12_clk_mout_g2d1.clk,
89 };
90
91 static struct clksrc_sources exynos4x12_clkset_mout_g2d = {
92         .sources        = exynos4x12_clkset_mout_g2d_list,
93         .nr_sources     = ARRAY_SIZE(exynos4x12_clkset_mout_g2d_list),
94 };
95
96 static struct clksrc_clk *sysclks[] = {
97         &clk_mout_mpll_user,
98 };
99
100 static struct clksrc_clk clksrcs[] = {
101         {
102                 .clk    = {
103                         .name           = "sclk_fimg2d",
104                 },
105                 .sources = &exynos4x12_clkset_mout_g2d,
106                 .reg_src = { .reg = EXYNOS4_CLKSRC_DMC, .shift = 28, .size = 1 },
107                 .reg_div = { .reg = EXYNOS4_CLKDIV_DMC1, .shift = 0, .size = 4 },
108         },
109 };
110
111 static struct clk init_clocks_off[] = {
112         {
113                 .name           = "sysmmu",
114                 .devname        = "exynos-sysmmu.9",
115                 .enable         = exynos4_clk_ip_dmc_ctrl,
116                 .ctrlbit        = (1 << 24),
117         }, {
118                 .name           = "sysmmu",
119                 .devname        = "exynos-sysmmu.12",
120                 .enable         = exynos4212_clk_ip_isp0_ctrl,
121                 .ctrlbit        = (7 << 8),
122         }, {
123                 .name           = "sysmmu",
124                 .devname        = "exynos-sysmmu.13",
125                 .enable         = exynos4212_clk_ip_isp1_ctrl,
126                 .ctrlbit        = (1 << 4),
127         }, {
128                 .name           = "sysmmu",
129                 .devname        = "exynos-sysmmu.14",
130                 .enable         = exynos4212_clk_ip_isp0_ctrl,
131                 .ctrlbit        = (1 << 11),
132         }, {
133                 .name           = "sysmmu",
134                 .devname        = "exynos-sysmmu.15",
135                 .enable         = exynos4212_clk_ip_isp0_ctrl,
136                 .ctrlbit        = (1 << 12),
137         }, {
138                 .name           = "flite",
139                 .devname        = "exynos-fimc-lite.0",
140                 .enable         = exynos4212_clk_ip_isp0_ctrl,
141                 .ctrlbit        = (1 << 4),
142         }, {
143                 .name           = "flite",
144                 .devname        = "exynos-fimc-lite.1",
145                 .enable         = exynos4212_clk_ip_isp0_ctrl,
146                 .ctrlbit        = (1 << 3),
147         }, {
148                 .name           = "fimg2d",
149                 .enable         = exynos4_clk_ip_dmc_ctrl,
150                 .ctrlbit        = (1 << 23),
151         },
152 };
153
154 #ifdef CONFIG_PM_SLEEP
155 static int exynos4212_clock_suspend(void)
156 {
157         s3c_pm_do_save(exynos4212_clock_save, ARRAY_SIZE(exynos4212_clock_save));
158
159         return 0;
160 }
161
162 static void exynos4212_clock_resume(void)
163 {
164         s3c_pm_do_restore_core(exynos4212_clock_save, ARRAY_SIZE(exynos4212_clock_save));
165 }
166
167 #else
168 #define exynos4212_clock_suspend NULL
169 #define exynos4212_clock_resume NULL
170 #endif
171
172 static struct syscore_ops exynos4212_clock_syscore_ops = {
173         .suspend        = exynos4212_clock_suspend,
174         .resume         = exynos4212_clock_resume,
175 };
176
177 void __init exynos4212_register_clocks(void)
178 {
179         int ptr;
180
181         /* usbphy1 is removed */
182         exynos4_clkset_group_list[4] = NULL;
183
184         /* mout_mpll_user is used */
185         exynos4_clkset_group_list[6] = &clk_mout_mpll_user.clk;
186         exynos4_clkset_aclk_top_list[0] = &clk_mout_mpll_user.clk;
187
188         exynos4_clk_mout_mpll.reg_src.reg = EXYNOS4_CLKSRC_DMC;
189         exynos4_clk_mout_mpll.reg_src.shift = 12;
190         exynos4_clk_mout_mpll.reg_src.size = 1;
191
192         for (ptr = 0; ptr < ARRAY_SIZE(sysclks); ptr++)
193                 s3c_register_clksrc(sysclks[ptr], 1);
194
195         s3c_register_clksrc(clksrcs, ARRAY_SIZE(clksrcs));
196
197         s3c_register_clocks(init_clocks_off, ARRAY_SIZE(init_clocks_off));
198         s3c_disable_clocks(init_clocks_off, ARRAY_SIZE(init_clocks_off));
199
200         register_syscore_ops(&exynos4212_clock_syscore_ops);
201 }