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
  45 static struct map_desc s3c2443_iodesc[] __initdata = {
  46         IODESC_ENT(WATCHDOG),
  47         IODESC_ENT(CLKPWR),
  48         IODESC_ENT(TIMER),
  49 };
  50
  51 struct sysdev_class s3c2443_sysclass = {
  52         .name = "s3c2443-core",
  53 };
  54
  55 static struct sys_device s3c2443_sysdev = {
  56         .cls            = &s3c2443_sysclass,
  57 };
  58
  59 static void s3c2443_hard_reset(void)
  60 {
  61         __raw_writel(S3C2443_SWRST_RESET, S3C2443_SWRST);
  62 }
  63
  64 int __init s3c2443_init(void)
  65 {
  66         printk("S3C2443: Initialising architecture\n");
  67
  68         s3c24xx_reset_hook = s3c2443_hard_reset;
  69
  70         s3c_nand_setname("s3c2412-nand");
  71         s3c_fb_setname("s3c2443-fb");
  72
  73         /* change WDT IRQ number */
  74         s3c_device_wdt.resource[1].start = IRQ_S3C2443_WDT;
  75         s3c_device_wdt.resource[1].end   = IRQ_S3C2443_WDT;
  76
  77         return sysdev_register(&s3c2443_sysdev);
  78 }
  79
  80 void __init s3c2443_init_uarts(struct s3c2410_uartcfg *cfg, int no)
  81 {
  82         s3c24xx_init_uartdevs("s3c2440-uart", s3c2410_uart_resources, cfg, no);
  83 }
  84
  85 /* s3c2443_map_io
  86  *
  87  * register the standard cpu IO areas, and any passed in from the
  88  * machine specific initialisation.
  89  */
  90
  91 void __init s3c2443_map_io(void)
  92 {
  93         s3c24xx_gpiocfg_default.set_pull = s3c_gpio_setpull_s3c2443;
  94         s3c24xx_gpiocfg_default.get_pull = s3c_gpio_getpull_s3c2443;
  95
  96         iotable_init(s3c2443_iodesc, ARRAY_SIZE(s3c2443_iodesc));
  97 }
  98
  99 /* need to register class before we actually register the device, and
 100  * we also need to ensure that it has been initialised before any of the
 101  * drivers even try to use it (even if not on an s3c2443 based system)
 102  * as a driver which may support both 2443 and 2440 may try and use it.
 103 */
 104
 105 static int __init s3c2443_core_init(void)
 106 {
 107         return sysdev_class_register(&s3c2443_sysclass);
 108 }
 109
 110 core_initcall(s3c2443_core_init);