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1 | /* linux/arch/arm/mach-s5p64x0/cpu.c |
2 | * | |
3 | * Copyright (c) 2009-2010 Samsung Electronics Co., Ltd. | |
4 | * http://www.samsung.com | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | */ | |
10 | ||
11 | #include <linux/kernel.h> | |
12 | #include <linux/types.h> | |
13 | #include <linux/interrupt.h> | |
14 | #include <linux/list.h> | |
15 | #include <linux/timer.h> | |
16 | #include <linux/init.h> | |
17 | #include <linux/clk.h> | |
18 | #include <linux/io.h> | |
19 | #include <linux/sysdev.h> | |
20 | #include <linux/serial_core.h> | |
21 | #include <linux/platform_device.h> | |
138a6c7f | 22 | #include <linux/sched.h> |
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23 | |
24 | #include <asm/mach/arch.h> | |
25 | #include <asm/mach/map.h> | |
26 | #include <asm/mach/irq.h> | |
27 | #include <asm/proc-fns.h> | |
28 | #include <asm/irq.h> | |
29 | ||
30 | #include <mach/hardware.h> | |
31 | #include <mach/map.h> | |
32 | #include <mach/regs-clock.h> | |
33 | ||
34 | #include <plat/regs-serial.h> | |
35 | #include <plat/cpu.h> | |
36 | #include <plat/devs.h> | |
37 | #include <plat/clock.h> | |
38 | #include <plat/s5p6440.h> | |
39 | #include <plat/s5p6450.h> | |
40 | #include <plat/adc-core.h> | |
43c46216 | 41 | #include <plat/fb-core.h> |
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42 | |
43 | /* Initial IO mappings */ | |
44 | ||
45 | static struct map_desc s5p64x0_iodesc[] __initdata = { | |
46 | { | |
47 | .virtual = (unsigned long)S5P_VA_GPIO, | |
48 | .pfn = __phys_to_pfn(S5P64X0_PA_GPIO), | |
49 | .length = SZ_4K, | |
50 | .type = MT_DEVICE, | |
51 | }, { | |
52 | .virtual = (unsigned long)VA_VIC0, | |
53 | .pfn = __phys_to_pfn(S5P64X0_PA_VIC0), | |
54 | .length = SZ_16K, | |
55 | .type = MT_DEVICE, | |
56 | }, { | |
57 | .virtual = (unsigned long)VA_VIC1, | |
58 | .pfn = __phys_to_pfn(S5P64X0_PA_VIC1), | |
59 | .length = SZ_16K, | |
60 | .type = MT_DEVICE, | |
61 | }, | |
62 | }; | |
63 | ||
64 | static struct map_desc s5p6440_iodesc[] __initdata = { | |
65 | { | |
66 | .virtual = (unsigned long)S3C_VA_UART, | |
67 | .pfn = __phys_to_pfn(S5P6440_PA_UART(0)), | |
68 | .length = SZ_4K, | |
69 | .type = MT_DEVICE, | |
70 | }, | |
71 | }; | |
72 | ||
73 | static struct map_desc s5p6450_iodesc[] __initdata = { | |
74 | { | |
75 | .virtual = (unsigned long)S3C_VA_UART, | |
76 | .pfn = __phys_to_pfn(S5P6450_PA_UART(0)), | |
77 | .length = SZ_512K, | |
78 | .type = MT_DEVICE, | |
79 | }, { | |
80 | .virtual = (unsigned long)S3C_VA_UART + SZ_512K, | |
81 | .pfn = __phys_to_pfn(S5P6450_PA_UART(5)), | |
82 | .length = SZ_4K, | |
83 | .type = MT_DEVICE, | |
84 | }, | |
85 | }; | |
86 | ||
87 | static void s5p64x0_idle(void) | |
88 | { | |
89 | unsigned long val; | |
90 | ||
91 | if (!need_resched()) { | |
92 | val = __raw_readl(S5P64X0_PWR_CFG); | |
93 | val &= ~(0x3 << 5); | |
94 | val |= (0x1 << 5); | |
95 | __raw_writel(val, S5P64X0_PWR_CFG); | |
96 | ||
97 | cpu_do_idle(); | |
98 | } | |
99 | local_irq_enable(); | |
100 | } | |
101 | ||
102 | /* | |
103 | * s5p64x0_map_io | |
104 | * | |
105 | * register the standard CPU IO areas | |
106 | */ | |
107 | ||
108 | void __init s5p6440_map_io(void) | |
109 | { | |
110 | /* initialize any device information early */ | |
6c6ad435 | 111 | s3c_adc_setname("s3c64xx-adc"); |
43c46216 | 112 | s3c_fb_setname("s5p64x0-fb"); |
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113 | |
114 | iotable_init(s5p64x0_iodesc, ARRAY_SIZE(s5p64x0_iodesc)); | |
115 | iotable_init(s5p6440_iodesc, ARRAY_SIZE(s5p6440_iodesc)); | |
116 | } | |
117 | ||
118 | void __init s5p6450_map_io(void) | |
119 | { | |
120 | /* initialize any device information early */ | |
6c6ad435 | 121 | s3c_adc_setname("s3c64xx-adc"); |
43c46216 | 122 | s3c_fb_setname("s5p64x0-fb"); |
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123 | |
124 | iotable_init(s5p64x0_iodesc, ARRAY_SIZE(s5p64x0_iodesc)); | |
3814554d | 125 | iotable_init(s5p6450_iodesc, ARRAY_SIZE(s5p6450_iodesc)); |
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126 | } |
127 | ||
128 | /* | |
129 | * s5p64x0_init_clocks | |
130 | * | |
131 | * register and setup the CPU clocks | |
132 | */ | |
133 | ||
134 | void __init s5p6440_init_clocks(int xtal) | |
135 | { | |
136 | printk(KERN_DEBUG "%s: initializing clocks\n", __func__); | |
137 | ||
138 | s3c24xx_register_baseclocks(xtal); | |
139 | s5p_register_clocks(xtal); | |
140 | s5p6440_register_clocks(); | |
141 | s5p6440_setup_clocks(); | |
142 | } | |
143 | ||
144 | void __init s5p6450_init_clocks(int xtal) | |
145 | { | |
146 | printk(KERN_DEBUG "%s: initializing clocks\n", __func__); | |
147 | ||
148 | s3c24xx_register_baseclocks(xtal); | |
149 | s5p_register_clocks(xtal); | |
150 | s5p6450_register_clocks(); | |
151 | s5p6450_setup_clocks(); | |
152 | } | |
153 | ||
154 | /* | |
155 | * s5p64x0_init_irq | |
156 | * | |
157 | * register the CPU interrupts | |
158 | */ | |
159 | ||
160 | void __init s5p6440_init_irq(void) | |
161 | { | |
162 | /* S5P6440 supports 2 VIC */ | |
163 | u32 vic[2]; | |
164 | ||
165 | /* | |
166 | * VIC0 is missing IRQ_VIC0[3, 4, 8, 10, (12-22)] | |
167 | * VIC1 is missing IRQ VIC1[1, 3, 4, 10, 11, 12, 14, 15, 22] | |
168 | */ | |
169 | vic[0] = 0xff800ae7; | |
170 | vic[1] = 0xffbf23e5; | |
171 | ||
172 | s5p_init_irq(vic, ARRAY_SIZE(vic)); | |
173 | } | |
174 | ||
175 | void __init s5p6450_init_irq(void) | |
176 | { | |
177 | /* S5P6450 supports only 2 VIC */ | |
178 | u32 vic[2]; | |
179 | ||
180 | /* | |
181 | * VIC0 is missing IRQ_VIC0[(13-15), (21-22)] | |
182 | * VIC1 is missing IRQ VIC1[12, 14, 23] | |
183 | */ | |
184 | vic[0] = 0xff9f1fff; | |
185 | vic[1] = 0xff7fafff; | |
186 | ||
187 | s5p_init_irq(vic, ARRAY_SIZE(vic)); | |
188 | } | |
189 | ||
190 | struct sysdev_class s5p64x0_sysclass = { | |
191 | .name = "s5p64x0-core", | |
192 | }; | |
193 | ||
194 | static struct sys_device s5p64x0_sysdev = { | |
195 | .cls = &s5p64x0_sysclass, | |
196 | }; | |
197 | ||
198 | static int __init s5p64x0_core_init(void) | |
199 | { | |
200 | return sysdev_class_register(&s5p64x0_sysclass); | |
201 | } | |
202 | core_initcall(s5p64x0_core_init); | |
203 | ||
204 | int __init s5p64x0_init(void) | |
205 | { | |
206 | printk(KERN_INFO "S5P64X0(S5P6440/S5P6450): Initializing architecture\n"); | |
207 | ||
208 | /* set idle function */ | |
209 | pm_idle = s5p64x0_idle; | |
210 | ||
211 | return sysdev_register(&s5p64x0_sysdev); | |
212 | } |