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
  44 static struct map_desc s3c244x_iodesc[] __initdata = {
  45         IODESC_ENT(CLKPWR),
  46         IODESC_ENT(TIMER),
  47         IODESC_ENT(WATCHDOG),
  48 };
  49
  50 /* uart initialisation */
  51
  52 void __init s3c244x_init_uarts(struct s3c2410_uartcfg *cfg, int no)
  53 {
  54         s3c24xx_init_uartdevs("s3c2440-uart", s3c2410_uart_resources, cfg, no);
  55 }
  56
  57 void __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
  75 struct bus_type s3c2440_subsys = {
  76         .name           = "s3c2440-core",
  77         .dev_name       = "s3c2440-core",
  78 };
  79
  80 struct 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
  91 static int __init s3c2440_core_init(void)
  92 {
  93         return subsys_system_register(&s3c2440_subsys, NULL);
  94 }
  95
  96 core_initcall(s3c2440_core_init);
  97
  98 static int __init s3c2442_core_init(void)
  99 {
 100         return subsys_system_register(&s3c2442_subsys, NULL);
 101 }
 102
 103 core_initcall(s3c2442_core_init);
 104
 105
 106 #ifdef CONFIG_PM_SLEEP
 107 static 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
 115 static int s3c244x_suspend(void)
 116 {
 117         s3c_pm_do_save(s3c244x_sleep, ARRAY_SIZE(s3c244x_sleep));
 118         return 0;
 119 }
 120
 121 static void s3c244x_resume(void)
 122 {
 123         s3c_pm_do_restore(s3c244x_sleep, ARRAY_SIZE(s3c244x_sleep));
 124 }
 125
 126 struct syscore_ops s3c244x_pm_syscore_ops = {
 127         .suspend        = s3c244x_suspend,
 128         .resume         = s3c244x_resume,
 129 };
 130 #endif