linux/arch/arm/mach-s3c/s3c244x.c
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   1// SPDX-License-Identifier: GPL-2.0
   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#include <linux/kernel.h>
   9#include <linux/types.h>
  10#include <linux/interrupt.h>
  11#include <linux/list.h>
  12#include <linux/timer.h>
  13#include <linux/init.h>
  14#include <linux/serial_core.h>
  15#include <linux/serial_s3c.h>
  16#include <linux/platform_device.h>
  17#include <linux/reboot.h>
  18#include <linux/device.h>
  19#include <linux/syscore_ops.h>
  20#include <linux/clk.h>
  21#include <linux/io.h>
  22
  23#include <asm/system_misc.h>
  24#include <asm/mach/arch.h>
  25#include <asm/mach/map.h>
  26#include <asm/mach/irq.h>
  27
  28#include "map.h"
  29#include <asm/irq.h>
  30
  31#include "regs-clock.h"
  32#include "regs-gpio.h"
  33
  34#include "devs.h"
  35#include "cpu.h"
  36#include "pm.h"
  37
  38#include "s3c24xx.h"
  39#include "nand-core-s3c24xx.h"
  40#include "regs-dsc-s3c24xx.h"
  41
  42static struct map_desc s3c244x_iodesc[] __initdata __maybe_unused = {
  43        IODESC_ENT(CLKPWR),
  44        IODESC_ENT(TIMER),
  45        IODESC_ENT(WATCHDOG),
  46};
  47
  48/* uart initialisation */
  49
  50void __init s3c244x_init_uarts(struct s3c2410_uartcfg *cfg, int no)
  51{
  52        s3c24xx_init_uartdevs("s3c2440-uart", s3c2410_uart_resources, cfg, no);
  53}
  54
  55void __init s3c244x_map_io(void)
  56{
  57        /* register our io-tables */
  58
  59        iotable_init(s3c244x_iodesc, ARRAY_SIZE(s3c244x_iodesc));
  60
  61        /* rename any peripherals used differing from the s3c2410 */
  62
  63        s3c_device_sdi.name  = "s3c2440-sdi";
  64        s3c_device_i2c0.name  = "s3c2440-i2c";
  65        s3c_nand_setname("s3c2440-nand");
  66        s3c_device_ts.name = "s3c2440-ts";
  67        s3c_device_usbgadget.name = "s3c2440-usbgadget";
  68        s3c2410_device_dclk.name = "s3c2440-dclk";
  69}
  70
  71/* Since the S3C2442 and S3C2440 share items, put both subsystems here */
  72
  73struct bus_type s3c2440_subsys = {
  74        .name           = "s3c2440-core",
  75        .dev_name       = "s3c2440-core",
  76};
  77
  78struct bus_type s3c2442_subsys = {
  79        .name           = "s3c2442-core",
  80        .dev_name       = "s3c2442-core",
  81};
  82
  83/* need to register the subsystem before we actually register the device, and
  84 * we also need to ensure that it has been initialised before any of the
  85 * drivers even try to use it (even if not on an s3c2440 based system)
  86 * as a driver which may support both 2410 and 2440 may try and use it.
  87*/
  88
  89static int __init s3c2440_core_init(void)
  90{
  91        return subsys_system_register(&s3c2440_subsys, NULL);
  92}
  93
  94core_initcall(s3c2440_core_init);
  95
  96static int __init s3c2442_core_init(void)
  97{
  98        return subsys_system_register(&s3c2442_subsys, NULL);
  99}
 100
 101core_initcall(s3c2442_core_init);
 102
 103
 104#ifdef CONFIG_PM_SLEEP
 105static struct sleep_save s3c244x_sleep[] = {
 106        SAVE_ITEM(S3C2440_DSC0),
 107        SAVE_ITEM(S3C2440_DSC1),
 108        SAVE_ITEM(S3C2440_GPJDAT),
 109        SAVE_ITEM(S3C2440_GPJCON),
 110        SAVE_ITEM(S3C2440_GPJUP)
 111};
 112
 113static int s3c244x_suspend(void)
 114{
 115        s3c_pm_do_save(s3c244x_sleep, ARRAY_SIZE(s3c244x_sleep));
 116        return 0;
 117}
 118
 119static void s3c244x_resume(void)
 120{
 121        s3c_pm_do_restore(s3c244x_sleep, ARRAY_SIZE(s3c244x_sleep));
 122}
 123
 124struct syscore_ops s3c244x_pm_syscore_ops = {
 125        .suspend        = s3c244x_suspend,
 126        .resume         = s3c244x_resume,
 127};
 128#endif
 129