LXR linux/arch/arm/mach-s3c24xx/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#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/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#include <plat/rtc-core.h>
  45#include <plat/spi-core.h>
  46
  47static struct map_desc s3c2443_iodesc[] __initdata = {
  48        IODESC_ENT(WATCHDOG),
  49        IODESC_ENT(CLKPWR),
  50        IODESC_ENT(TIMER),
  51};
  52
  53struct bus_type s3c2443_subsys = {
  54        .name = "s3c2443-core",
  55        .dev_name = "s3c2443-core",
  56};
  57
  58static struct device s3c2443_dev = {
  59        .bus            = &s3c2443_subsys,
  60};
  61
  62void 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
  70int __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
  87void __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
  98void __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        /* initialize device information early */
 104        s3c64xx_spi_setname("s3c2443-spi");
 105
 106        iotable_init(s3c2443_iodesc, ARRAY_SIZE(s3c2443_iodesc));
 107}
 108
 109/* need to register the subsystem before we actually register the device, and
 110 * we also need to ensure that it has been initialised before any of the
 111 * drivers even try to use it (even if not on an s3c2443 based system)
 112 * as a driver which may support both 2443 and 2440 may try and use it.
 113*/
 114
 115static int __init s3c2443_core_init(void)
 116{
 117        return subsys_system_register(&s3c2443_subsys, NULL);
 118}
 119
 120core_initcall(s3c2443_core_init);
 121