LXR linux/arch/arm/mach-s3c24xx/s3c2410.c

   1/* linux/arch/arm/mach-s3c2410/s3c2410.c
   2 *
   3 * Copyright (c) 2003-2005 Simtec Electronics
   4 *      Ben Dooks <ben@simtec.co.uk>
   5 *
   6 * http://www.simtec.co.uk/products/EB2410ITX/
   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/clk.h>
  21#include <linux/device.h>
  22#include <linux/syscore_ops.h>
  23#include <linux/serial_core.h>
  24#include <linux/serial_s3c.h>
  25#include <linux/platform_device.h>
  26#include <linux/reboot.h>
  27#include <linux/io.h>
  28
  29#include <asm/mach/arch.h>
  30#include <asm/mach/map.h>
  31#include <asm/mach/irq.h>
  32
  33#include <mach/hardware.h>
  34#include <mach/gpio-samsung.h>
  35#include <asm/irq.h>
  36#include <asm/system_misc.h>
  37
  38#include <plat/cpu-freq.h>
  39
  40#include <mach/regs-clock.h>
  41
  42#include <plat/cpu.h>
  43#include <plat/devs.h>
  44#include <plat/pm.h>
  45
  46#include <plat/gpio-core.h>
  47#include <plat/gpio-cfg.h>
  48#include <plat/gpio-cfg-helpers.h>
  49
  50#include "common.h"
  51
  52/* Initial IO mappings */
  53
  54static struct map_desc s3c2410_iodesc[] __initdata = {
  55        IODESC_ENT(CLKPWR),
  56        IODESC_ENT(TIMER),
  57        IODESC_ENT(WATCHDOG),
  58};
  59
  60/* our uart devices */
  61
  62/* uart registration process */
  63
  64void __init s3c2410_init_uarts(struct s3c2410_uartcfg *cfg, int no)
  65{
  66        s3c24xx_init_uartdevs("s3c2410-uart", s3c2410_uart_resources, cfg, no);
  67}
  68
  69/* s3c2410_map_io
  70 *
  71 * register the standard cpu IO areas, and any passed in from the
  72 * machine specific initialisation.
  73*/
  74
  75void __init s3c2410_map_io(void)
  76{
  77        s3c24xx_gpiocfg_default.set_pull = s3c24xx_gpio_setpull_1up;
  78        s3c24xx_gpiocfg_default.get_pull = s3c24xx_gpio_getpull_1up;
  79
  80        iotable_init(s3c2410_iodesc, ARRAY_SIZE(s3c2410_iodesc));
  81}
  82
  83struct bus_type s3c2410_subsys = {
  84        .name = "s3c2410-core",
  85        .dev_name = "s3c2410-core",
  86};
  87
  88/* Note, we would have liked to name this s3c2410-core, but we cannot
  89 * register two subsystems with the same name.
  90 */
  91struct bus_type s3c2410a_subsys = {
  92        .name = "s3c2410a-core",
  93        .dev_name = "s3c2410a-core",
  94};
  95
  96static struct device s3c2410_dev = {
  97        .bus            = &s3c2410_subsys,
  98};
  99
 100/* need to register the subsystem before we actually register the device, and
 101 * we also need to ensure that it has been initialised before any of the
 102 * drivers even try to use it (even if not on an s3c2410 based system)
 103 * as a driver which may support both 2410 and 2440 may try and use it.
 104*/
 105
 106static int __init s3c2410_core_init(void)
 107{
 108        return subsys_system_register(&s3c2410_subsys, NULL);
 109}
 110
 111core_initcall(s3c2410_core_init);
 112
 113static int __init s3c2410a_core_init(void)
 114{
 115        return subsys_system_register(&s3c2410a_subsys, NULL);
 116}
 117
 118core_initcall(s3c2410a_core_init);
 119
 120int __init s3c2410_init(void)
 121{
 122        printk("S3C2410: Initialising architecture\n");
 123
 124#ifdef CONFIG_PM_SLEEP
 125        register_syscore_ops(&s3c2410_pm_syscore_ops);
 126        register_syscore_ops(&s3c24xx_irq_syscore_ops);
 127#endif
 128
 129        return device_register(&s3c2410_dev);
 130}
 131
 132int __init s3c2410a_init(void)
 133{
 134        s3c2410_dev.bus = &s3c2410a_subsys;
 135        return s3c2410_init();
 136}
 137