1 /* linux/arch/arm/mach-s3c2443/s3c2443.c
2 *
3 * Copyright (c) 2007 Simtec Electronics
4 * Ben Dooks <ben@simtec.co.uk>
5 *
6 * Samsung S3C2443 Mobile CPU support
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/platform_device.h>
21 #include <linux/serial_core.h>
22 #include <linux/device.h>
23 #include <linux/clk.h>
24 #include <linux/io.h>
25
26 #include <asm/mach/arch.h>
27 #include <asm/mach/map.h>
28 #include <asm/mach/irq.h>
29
30 #include <mach/hardware.h>
31 #include <asm/irq.h>
32 #include <asm/system_misc.h>
33
34 #include <mach/regs-s3c2443-clock.h>
35
36 #include <plat/gpio-core.h>
37 #include <plat/gpio-cfg.h>
38 #include <plat/gpio-cfg-helpers.h>
39 #include <plat/s3c2443.h>
40 #include <plat/devs.h>
41 #include <plat/cpu.h>
42 #include <plat/fb-core.h>
43 #include <plat/nand-core.h>
44 #include <plat/adc-core.h>
45 #include <plat/rtc-core.h>
46
47 static struct map_desc s3c2443_iodesc[] __initdata = {
48 IODESC_ENT(WATCHDOG),
49 IODESC_ENT(CLKPWR),
50 IODESC_ENT(TIMER),
51 };
52
53 struct bus_type s3c2443_subsys = {
54 .name = "s3c2443-core",
55 .dev_name = "s3c2443-core",
56 };
57
58 static struct device s3c2443_dev = {
59 .bus = &s3c2443_subsys,
60 };
61
s3c2443_restart(char mode,const char * cmd)62 void s3c2443_restart(char mode, const char *cmd)
63 {
64 if (mode == 's')
65 soft_restart(0);
66
67 __raw_writel(S3C2443_SWRST_RESET, S3C2443_SWRST);
68 }
69
s3c2443_init(void)70 int __init s3c2443_init(void)
71 {
72 printk("S3C2443: Initialising architecture\n");
73
74 s3c_nand_setname("s3c2412-nand");
75 s3c_fb_setname("s3c2443-fb");
76
77 s3c_adc_setname("s3c2443-adc");
78 s3c_rtc_setname("s3c2443-rtc");
79
80 /* change WDT IRQ number */
81 s3c_device_wdt.resource[1].start = IRQ_S3C2443_WDT;
82 s3c_device_wdt.resource[1].end = IRQ_S3C2443_WDT;
83
84 return device_register(&s3c2443_dev);
85 }
86
s3c2443_init_uarts(struct s3c2410_uartcfg * cfg,int no)87 void __init s3c2443_init_uarts(struct s3c2410_uartcfg *cfg, int no)
88 {
89 s3c24xx_init_uartdevs("s3c2440-uart", s3c2410_uart_resources, cfg, no);
90 }
91
92 /* s3c2443_map_io
93 *
94 * register the standard cpu IO areas, and any passed in from the
95 * machine specific initialisation.
96 */
97
s3c2443_map_io(void)98 void __init s3c2443_map_io(void)
99 {
100 s3c24xx_gpiocfg_default.set_pull = s3c2443_gpio_setpull;
101 s3c24xx_gpiocfg_default.get_pull = s3c2443_gpio_getpull;
102
103 iotable_init(s3c2443_iodesc, ARRAY_SIZE(s3c2443_iodesc));
104 }
105
106 /* need to register the subsystem before we actually register the device, and
107 * we also need to ensure that it has been initialised before any of the
108 * drivers even try to use it (even if not on an s3c2443 based system)
109 * as a driver which may support both 2443 and 2440 may try and use it.
110 */
111
s3c2443_core_init(void)112 static int __init s3c2443_core_init(void)
113 {
114 return subsys_system_register(&s3c2443_subsys, NULL);
115 }
116
117 core_initcall(s3c2443_core_init);
118