arch/arm/mach-s3c2443/s3c2443.c

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