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/sysdev.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 #include <mach/reset.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
  46 static struct map_desc s3c2443_iodesc[] __initdata = {
  47         IODESC_ENT(WATCHDOG),
  48         IODESC_ENT(CLKPWR),
  49         IODESC_ENT(TIMER),
  50 };
  51
  52 struct sysdev_class s3c2443_sysclass = {
  53         .name = "s3c2443-core",
  54 };
  55
  56 static struct sys_device s3c2443_sysdev = {
  57         .cls            = &s3c2443_sysclass,
  58 };
  59
  60 static void s3c2443_hard_reset(void)
  61 {
  62         __raw_writel(S3C2443_SWRST_RESET, S3C2443_SWRST);
  63 }
  64
  65 int __init s3c2443_init(void)
  66 {
  67         printk("S3C2443: Initialising architecture\n");
  68
  69         s3c24xx_reset_hook = s3c2443_hard_reset;
  70
  71         s3c_nand_setname("s3c2412-nand");
  72         s3c_fb_setname("s3c2443-fb");
  73
  74         s3c_adc_setname("s3c2443-adc");
  75
  76         /* change WDT IRQ number */
  77         s3c_device_wdt.resource[1].start = IRQ_S3C2443_WDT;
  78         s3c_device_wdt.resource[1].end   = IRQ_S3C2443_WDT;
  79
  80         return sysdev_register(&s3c2443_sysdev);
  81 }
  82
  83 void __init s3c2443_init_uarts(struct s3c2410_uartcfg *cfg, int no)
  84 {
  85         s3c24xx_init_uartdevs("s3c2440-uart", s3c2410_uart_resources, cfg, no);
  86 }
  87
  88 /* s3c2443_map_io
  89  *
  90  * register the standard cpu IO areas, and any passed in from the
  91  * machine specific initialisation.
  92  */
  93
  94 void __init s3c2443_map_io(void)
  95 {
  96         s3c24xx_gpiocfg_default.set_pull = s3c2443_gpio_setpull;
  97         s3c24xx_gpiocfg_default.get_pull = s3c2443_gpio_getpull;
  98
  99         iotable_init(s3c2443_iodesc, ARRAY_SIZE(s3c2443_iodesc));
 100 }
 101
 102 /* need to register class before we actually register the device, and
 103  * we also need to ensure that it has been initialised before any of the
 104  * drivers even try to use it (even if not on an s3c2443 based system)
 105  * as a driver which may support both 2443 and 2440 may try and use it.
 106 */
 107
 108 static int __init s3c2443_core_init(void)
 109 {
 110         return sysdev_class_register(&s3c2443_sysclass);
 111 }
 112
 113 core_initcall(s3c2443_core_init);