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
  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
  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
  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
  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
  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         /* 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
 115 static int __init s3c2443_core_init(void)
 116 {
 117         return subsys_system_register(&s3c2443_subsys, NULL);
 118 }
 119
 120 core_initcall(s3c2443_core_init);