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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> | |
41 | ||
42 | /* Initial IO mappings */ | |
43 | ||
44 | static struct map_desc s5p64x0_iodesc[] __initdata = { | |
45 | { | |
46 | .virtual = (unsigned long)S5P_VA_GPIO, | |
47 | .pfn = __phys_to_pfn(S5P64X0_PA_GPIO), | |
48 | .length = SZ_4K, | |
49 | .type = MT_DEVICE, | |
50 | }, { | |
51 | .virtual = (unsigned long)VA_VIC0, | |
52 | .pfn = __phys_to_pfn(S5P64X0_PA_VIC0), | |
53 | .length = SZ_16K, | |
54 | .type = MT_DEVICE, | |
55 | }, { | |
56 | .virtual = (unsigned long)VA_VIC1, | |
57 | .pfn = __phys_to_pfn(S5P64X0_PA_VIC1), | |
58 | .length = SZ_16K, | |
59 | .type = MT_DEVICE, | |
60 | }, | |
61 | }; | |
62 | ||
63 | static struct map_desc s5p6440_iodesc[] __initdata = { | |
64 | { | |
65 | .virtual = (unsigned long)S3C_VA_UART, | |
66 | .pfn = __phys_to_pfn(S5P6440_PA_UART(0)), | |
67 | .length = SZ_4K, | |
68 | .type = MT_DEVICE, | |
69 | }, | |
70 | }; | |
71 | ||
72 | static struct map_desc s5p6450_iodesc[] __initdata = { | |
73 | { | |
74 | .virtual = (unsigned long)S3C_VA_UART, | |
75 | .pfn = __phys_to_pfn(S5P6450_PA_UART(0)), | |
76 | .length = SZ_512K, | |
77 | .type = MT_DEVICE, | |
78 | }, { | |
79 | .virtual = (unsigned long)S3C_VA_UART + SZ_512K, | |
80 | .pfn = __phys_to_pfn(S5P6450_PA_UART(5)), | |
81 | .length = SZ_4K, | |
82 | .type = MT_DEVICE, | |
83 | }, | |
84 | }; | |
85 | ||
86 | static void s5p64x0_idle(void) | |
87 | { | |
88 | unsigned long val; | |
89 | ||
90 | if (!need_resched()) { | |
91 | val = __raw_readl(S5P64X0_PWR_CFG); | |
92 | val &= ~(0x3 << 5); | |
93 | val |= (0x1 << 5); | |
94 | __raw_writel(val, S5P64X0_PWR_CFG); | |
95 | ||
96 | cpu_do_idle(); | |
97 | } | |
98 | local_irq_enable(); | |
99 | } | |
100 | ||
101 | /* | |
102 | * s5p64x0_map_io | |
103 | * | |
104 | * register the standard CPU IO areas | |
105 | */ | |
106 | ||
107 | void __init s5p6440_map_io(void) | |
108 | { | |
109 | /* initialize any device information early */ | |
6c6ad435 | 110 | s3c_adc_setname("s3c64xx-adc"); |
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111 | |
112 | iotable_init(s5p64x0_iodesc, ARRAY_SIZE(s5p64x0_iodesc)); | |
113 | iotable_init(s5p6440_iodesc, ARRAY_SIZE(s5p6440_iodesc)); | |
114 | } | |
115 | ||
116 | void __init s5p6450_map_io(void) | |
117 | { | |
118 | /* initialize any device information early */ | |
6c6ad435 | 119 | s3c_adc_setname("s3c64xx-adc"); |
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120 | |
121 | iotable_init(s5p64x0_iodesc, ARRAY_SIZE(s5p64x0_iodesc)); | |
3814554d | 122 | iotable_init(s5p6450_iodesc, ARRAY_SIZE(s5p6450_iodesc)); |
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123 | } |
124 | ||
125 | /* | |
126 | * s5p64x0_init_clocks | |
127 | * | |
128 | * register and setup the CPU clocks | |
129 | */ | |
130 | ||
131 | void __init s5p6440_init_clocks(int xtal) | |
132 | { | |
133 | printk(KERN_DEBUG "%s: initializing clocks\n", __func__); | |
134 | ||
135 | s3c24xx_register_baseclocks(xtal); | |
136 | s5p_register_clocks(xtal); | |
137 | s5p6440_register_clocks(); | |
138 | s5p6440_setup_clocks(); | |
139 | } | |
140 | ||
141 | void __init s5p6450_init_clocks(int xtal) | |
142 | { | |
143 | printk(KERN_DEBUG "%s: initializing clocks\n", __func__); | |
144 | ||
145 | s3c24xx_register_baseclocks(xtal); | |
146 | s5p_register_clocks(xtal); | |
147 | s5p6450_register_clocks(); | |
148 | s5p6450_setup_clocks(); | |
149 | } | |
150 | ||
151 | /* | |
152 | * s5p64x0_init_irq | |
153 | * | |
154 | * register the CPU interrupts | |
155 | */ | |
156 | ||
157 | void __init s5p6440_init_irq(void) | |
158 | { | |
159 | /* S5P6440 supports 2 VIC */ | |
160 | u32 vic[2]; | |
161 | ||
162 | /* | |
163 | * VIC0 is missing IRQ_VIC0[3, 4, 8, 10, (12-22)] | |
164 | * VIC1 is missing IRQ VIC1[1, 3, 4, 10, 11, 12, 14, 15, 22] | |
165 | */ | |
166 | vic[0] = 0xff800ae7; | |
167 | vic[1] = 0xffbf23e5; | |
168 | ||
169 | s5p_init_irq(vic, ARRAY_SIZE(vic)); | |
170 | } | |
171 | ||
172 | void __init s5p6450_init_irq(void) | |
173 | { | |
174 | /* S5P6450 supports only 2 VIC */ | |
175 | u32 vic[2]; | |
176 | ||
177 | /* | |
178 | * VIC0 is missing IRQ_VIC0[(13-15), (21-22)] | |
179 | * VIC1 is missing IRQ VIC1[12, 14, 23] | |
180 | */ | |
181 | vic[0] = 0xff9f1fff; | |
182 | vic[1] = 0xff7fafff; | |
183 | ||
184 | s5p_init_irq(vic, ARRAY_SIZE(vic)); | |
185 | } | |
186 | ||
187 | struct sysdev_class s5p64x0_sysclass = { | |
188 | .name = "s5p64x0-core", | |
189 | }; | |
190 | ||
191 | static struct sys_device s5p64x0_sysdev = { | |
192 | .cls = &s5p64x0_sysclass, | |
193 | }; | |
194 | ||
195 | static int __init s5p64x0_core_init(void) | |
196 | { | |
197 | return sysdev_class_register(&s5p64x0_sysclass); | |
198 | } | |
199 | core_initcall(s5p64x0_core_init); | |
200 | ||
201 | int __init s5p64x0_init(void) | |
202 | { | |
203 | printk(KERN_INFO "S5P64X0(S5P6440/S5P6450): Initializing architecture\n"); | |
204 | ||
205 | /* set idle function */ | |
206 | pm_idle = s5p64x0_idle; | |
207 | ||
208 | return sysdev_register(&s5p64x0_sysdev); | |
209 | } |