1 /* linux/arch/arm/mach-s3c2410/s3c2410.c
2 *
3 * Copyright (c) 2003-2005 Simtec Electronics
4 * Ben Dooks <ben@simtec.co.uk>
5 *
6 * http://www.simtec.co.uk/products/EB2410ITX/
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
11 */
12
13 #include <linux/kernel.h>
14 #include <linux/types.h>
15 #include <linux/interrupt.h>
16 #include <linux/list.h>
17 #include <linux/timer.h>
18 #include <linux/init.h>
19 #include <linux/gpio.h>
20 #include <linux/clk.h>
21 #include <linux/device.h>
22 #include <linux/syscore_ops.h>
23 #include <linux/serial_core.h>
24 #include <linux/serial_s3c.h>
25 #include <linux/platform_device.h>
26 #include <linux/reboot.h>
27 #include <linux/io.h>
28
29 #include <asm/mach/arch.h>
30 #include <asm/mach/map.h>
31 #include <asm/mach/irq.h>
32
33 #include <mach/hardware.h>
34 #include <mach/gpio-samsung.h>
35 #include <asm/irq.h>
36 #include <asm/system_misc.h>
37
38 #include <plat/cpu-freq.h>
39
40 #include <mach/regs-clock.h>
41
42 #include <plat/cpu.h>
43 #include <plat/devs.h>
44 #include <plat/pm.h>
45
46 #include <plat/gpio-core.h>
47 #include <plat/gpio-cfg.h>
48 #include <plat/gpio-cfg-helpers.h>
49
50 #include "common.h"
51
52 /* Initial IO mappings */
53
54 static struct map_desc s3c2410_iodesc[] __initdata = {
55 IODESC_ENT(CLKPWR),
56 IODESC_ENT(TIMER),
57 IODESC_ENT(WATCHDOG),
58 };
59
60 /* our uart devices */
61
62 /* uart registration process */
63
s3c2410_init_uarts(struct s3c2410_uartcfg * cfg,int no)64 void __init s3c2410_init_uarts(struct s3c2410_uartcfg *cfg, int no)
65 {
66 s3c24xx_init_uartdevs("s3c2410-uart", s3c2410_uart_resources, cfg, no);
67 }
68
69 /* s3c2410_map_io
70 *
71 * register the standard cpu IO areas, and any passed in from the
72 * machine specific initialisation.
73 */
74
s3c2410_map_io(void)75 void __init s3c2410_map_io(void)
76 {
77 s3c24xx_gpiocfg_default.set_pull = s3c24xx_gpio_setpull_1up;
78 s3c24xx_gpiocfg_default.get_pull = s3c24xx_gpio_getpull_1up;
79
80 iotable_init(s3c2410_iodesc, ARRAY_SIZE(s3c2410_iodesc));
81 }
82
83 struct bus_type s3c2410_subsys = {
84 .name = "s3c2410-core",
85 .dev_name = "s3c2410-core",
86 };
87
88 /* Note, we would have liked to name this s3c2410-core, but we cannot
89 * register two subsystems with the same name.
90 */
91 struct bus_type s3c2410a_subsys = {
92 .name = "s3c2410a-core",
93 .dev_name = "s3c2410a-core",
94 };
95
96 static struct device s3c2410_dev = {
97 .bus = &s3c2410_subsys,
98 };
99
100 /* need to register the subsystem before we actually register the device, and
101 * we also need to ensure that it has been initialised before any of the
102 * drivers even try to use it (even if not on an s3c2410 based system)
103 * as a driver which may support both 2410 and 2440 may try and use it.
104 */
105
s3c2410_core_init(void)106 static int __init s3c2410_core_init(void)
107 {
108 return subsys_system_register(&s3c2410_subsys, NULL);
109 }
110
111 core_initcall(s3c2410_core_init);
112
s3c2410a_core_init(void)113 static int __init s3c2410a_core_init(void)
114 {
115 return subsys_system_register(&s3c2410a_subsys, NULL);
116 }
117
118 core_initcall(s3c2410a_core_init);
119
s3c2410_init(void)120 int __init s3c2410_init(void)
121 {
122 printk("S3C2410: Initialising architecture\n");
123
124 #ifdef CONFIG_PM
125 register_syscore_ops(&s3c2410_pm_syscore_ops);
126 register_syscore_ops(&s3c24xx_irq_syscore_ops);
127 #endif
128
129 return device_register(&s3c2410_dev);
130 }
131
s3c2410a_init(void)132 int __init s3c2410a_init(void)
133 {
134 s3c2410_dev.bus = &s3c2410a_subsys;
135 return s3c2410_init();
136 }
137