arch/arm/mach-s3c/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 "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
  42 static 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
  50 void __init s3c244x_init_uarts(struct s3c2410_uartcfg *cfg, int no)
  51 {
  52         s3c24xx_init_uartdevs("s3c2440-uart", s3c2410_uart_resources, cfg, no);
  53 }
  54
  55 void __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
  73 struct bus_type s3c2440_subsys = {
  74         .name           = "s3c2440-core",
  75         .dev_name       = "s3c2440-core",
  76 };
  77
  78 struct 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
  89 static int __init s3c2440_core_init(void)
  90 {
  91         return subsys_system_register(&s3c2440_subsys, NULL);
  92 }
  93
  94 core_initcall(s3c2440_core_init);
  95
  96 static int __init s3c2442_core_init(void)
  97 {
  98         return subsys_system_register(&s3c2442_subsys, NULL);
  99 }
 100
 101 core_initcall(s3c2442_core_init);
 102
 103
 104 #ifdef CONFIG_PM_SLEEP
 105 static 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
 113 static int s3c244x_suspend(void)
 114 {
 115         s3c_pm_do_save(s3c244x_sleep, ARRAY_SIZE(s3c244x_sleep));
 116         return 0;
 117 }
 118
 119 static void s3c244x_resume(void)
 120 {
 121         s3c_pm_do_restore(s3c244x_sleep, ARRAY_SIZE(s3c244x_sleep));
 122 }
 123
 124 struct syscore_ops s3c244x_pm_syscore_ops = {
 125         .suspend        = s3c244x_suspend,
 126         .resume         = s3c244x_resume,
 127 };
 128 #endif