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

   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 <mach/hardware.h>
  29#include <asm/irq.h>
  30
  31#include <plat/cpu-freq.h>
  32
  33#include <mach/regs-clock.h>
  34#include <mach/regs-gpio.h>
  35
  36#include <plat/devs.h>
  37#include <plat/cpu.h>
  38#include <plat/pm.h>
  39
  40#include "common.h"
  41#include "nand-core.h"
  42#include "regs-dsc.h"
  43
  44static struct map_desc s3c244x_iodesc[] __initdata = {
  45        IODESC_ENT(CLKPWR),
  46        IODESC_ENT(TIMER),
  47        IODESC_ENT(WATCHDOG),
  48};
  49
  50/* uart initialisation */
  51
  52void __init s3c244x_init_uarts(struct s3c2410_uartcfg *cfg, int no)
  53{
  54        s3c24xx_init_uartdevs("s3c2440-uart", s3c2410_uart_resources, cfg, no);
  55}
  56
  57void __init s3c244x_map_io(void)
  58{
  59        /* register our io-tables */
  60
  61        iotable_init(s3c244x_iodesc, ARRAY_SIZE(s3c244x_iodesc));
  62
  63        /* rename any peripherals used differing from the s3c2410 */
  64
  65        s3c_device_sdi.name  = "s3c2440-sdi";
  66        s3c_device_i2c0.name  = "s3c2440-i2c";
  67        s3c_nand_setname("s3c2440-nand");
  68        s3c_device_ts.name = "s3c2440-ts";
  69        s3c_device_usbgadget.name = "s3c2440-usbgadget";
  70        s3c2410_device_dclk.name = "s3c2440-dclk";
  71}
  72
  73/* Since the S3C2442 and S3C2440 share items, put both subsystems here */
  74
  75struct bus_type s3c2440_subsys = {
  76        .name           = "s3c2440-core",
  77        .dev_name       = "s3c2440-core",
  78};
  79
  80struct bus_type s3c2442_subsys = {
  81        .name           = "s3c2442-core",
  82        .dev_name       = "s3c2442-core",
  83};
  84
  85/* need to register the subsystem before we actually register the device, and
  86 * we also need to ensure that it has been initialised before any of the
  87 * drivers even try to use it (even if not on an s3c2440 based system)
  88 * as a driver which may support both 2410 and 2440 may try and use it.
  89*/
  90
  91static int __init s3c2440_core_init(void)
  92{
  93        return subsys_system_register(&s3c2440_subsys, NULL);
  94}
  95
  96core_initcall(s3c2440_core_init);
  97
  98static int __init s3c2442_core_init(void)
  99{
 100        return subsys_system_register(&s3c2442_subsys, NULL);
 101}
 102
 103core_initcall(s3c2442_core_init);
 104
 105
 106#ifdef CONFIG_PM_SLEEP
 107static struct sleep_save s3c244x_sleep[] = {
 108        SAVE_ITEM(S3C2440_DSC0),
 109        SAVE_ITEM(S3C2440_DSC1),
 110        SAVE_ITEM(S3C2440_GPJDAT),
 111        SAVE_ITEM(S3C2440_GPJCON),
 112        SAVE_ITEM(S3C2440_GPJUP)
 113};
 114
 115static int s3c244x_suspend(void)
 116{
 117        s3c_pm_do_save(s3c244x_sleep, ARRAY_SIZE(s3c244x_sleep));
 118        return 0;
 119}
 120
 121static void s3c244x_resume(void)
 122{
 123        s3c_pm_do_restore(s3c244x_sleep, ARRAY_SIZE(s3c244x_sleep));
 124}
 125
 126struct syscore_ops s3c244x_pm_syscore_ops = {
 127        .suspend        = s3c244x_suspend,
 128        .resume         = s3c244x_resume,
 129};
 130#endif
 131