LXR linux/arch/arm/mach-s3c24xx/s3c244x.c

   1/* linux/arch/arm/plat-s3c24xx/s3c244x.c
   2 *
   3 * Copyright (c) 2004-2006 Simtec Electronics
   4 *   Ben Dooks <ben@simtec.co.uk>
   5 *
   6 * Samsung S3C2440 and S3C2442 Mobile CPU support (not S3C2443)
   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/serial_core.h>
  20#include <linux/serial_s3c.h>
  21#include <linux/platform_device.h>
  22#include <linux/reboot.h>
  23#include <linux/device.h>
  24#include <linux/syscore_ops.h>
  25#include <linux/clk.h>
  26#include <linux/io.h>
  27
  28#include <asm/system_misc.h>
  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 <asm/irq.h>
  35
  36#include <plat/cpu-freq.h>
  37
  38#include <mach/regs-clock.h>
  39#include <mach/regs-gpio.h>
  40
  41#include <plat/devs.h>
  42#include <plat/cpu.h>
  43#include <plat/pm.h>
  44
  45#include "common.h"
  46#include "nand-core.h"
  47#include "regs-dsc.h"
  48
  49static struct map_desc s3c244x_iodesc[] __initdata = {
  50        IODESC_ENT(CLKPWR),
  51        IODESC_ENT(TIMER),
  52        IODESC_ENT(WATCHDOG),
  53};
  54
  55/* uart initialisation */
  56
  57void __init s3c244x_init_uarts(struct s3c2410_uartcfg *cfg, int no)
  58{
  59        s3c24xx_init_uartdevs("s3c2440-uart", s3c2410_uart_resources, cfg, no);
  60}
  61
  62void __init s3c244x_map_io(void)
  63{
  64        /* register our io-tables */
  65
  66        iotable_init(s3c244x_iodesc, ARRAY_SIZE(s3c244x_iodesc));
  67
  68        /* rename any peripherals used differing from the s3c2410 */
  69
  70        s3c_device_sdi.name  = "s3c2440-sdi";
  71        s3c_device_i2c0.name  = "s3c2440-i2c";
  72        s3c_nand_setname("s3c2440-nand");
  73        s3c_device_ts.name = "s3c2440-ts";
  74        s3c_device_usbgadget.name = "s3c2440-usbgadget";
  75        s3c2410_device_dclk.name = "s3c2440-dclk";
  76}
  77
  78/* Since the S3C2442 and S3C2440 share items, put both subsystems here */
  79
  80struct bus_type s3c2440_subsys = {
  81        .name           = "s3c2440-core",
  82        .dev_name       = "s3c2440-core",
  83};
  84
  85struct bus_type s3c2442_subsys = {
  86        .name           = "s3c2442-core",
  87        .dev_name       = "s3c2442-core",
  88};
  89
  90/* need to register the subsystem before we actually register the device, and
  91 * we also need to ensure that it has been initialised before any of the
  92 * drivers even try to use it (even if not on an s3c2440 based system)
  93 * as a driver which may support both 2410 and 2440 may try and use it.
  94*/
  95
  96static int __init s3c2440_core_init(void)
  97{
  98        return subsys_system_register(&s3c2440_subsys, NULL);
  99}
 100
 101core_initcall(s3c2440_core_init);
 102
 103static int __init s3c2442_core_init(void)
 104{
 105        return subsys_system_register(&s3c2442_subsys, NULL);
 106}
 107
 108core_initcall(s3c2442_core_init);
 109
 110
 111#ifdef CONFIG_PM_SLEEP
 112static struct sleep_save s3c244x_sleep[] = {
 113        SAVE_ITEM(S3C2440_DSC0),
 114        SAVE_ITEM(S3C2440_DSC1),
 115        SAVE_ITEM(S3C2440_GPJDAT),
 116        SAVE_ITEM(S3C2440_GPJCON),
 117        SAVE_ITEM(S3C2440_GPJUP)
 118};
 119
 120static int s3c244x_suspend(void)
 121{
 122        s3c_pm_do_save(s3c244x_sleep, ARRAY_SIZE(s3c244x_sleep));
 123        return 0;
 124}
 125
 126static void s3c244x_resume(void)
 127{
 128        s3c_pm_do_restore(s3c244x_sleep, ARRAY_SIZE(s3c244x_sleep));
 129}
 130
 131struct syscore_ops s3c244x_pm_syscore_ops = {
 132        .suspend        = s3c244x_suspend,
 133        .resume         = s3c244x_resume,
 134};
 135#endif
 136