arch/arm/mach-s3c24xx/s3c2410.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 //
   3 // Copyright (c) 2003-2005 Simtec Electronics
   4 //      Ben Dooks <ben@simtec.co.uk>
   5 //
   6 // http://www.simtec.co.uk/products/EB2410ITX/
   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/gpio.h>
  15 #include <linux/clk.h>
  16 #include <linux/device.h>
  17 #include <linux/syscore_ops.h>
  18 #include <linux/serial_core.h>
  19 #include <linux/serial_s3c.h>
  20 #include <linux/platform_device.h>
  21 #include <linux/reboot.h>
  22 #include <linux/io.h>
  23
  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 <mach/gpio-samsung.h>
  30 #include <asm/irq.h>
  31 #include <asm/system_misc.h>
  32
  33 #include <plat/cpu-freq.h>
  34
  35 #include <mach/regs-clock.h>
  36
  37 #include <plat/cpu.h>
  38 #include <plat/devs.h>
  39 #include <plat/pm.h>
  40
  41 #include <plat/gpio-core.h>
  42 #include <plat/gpio-cfg.h>
  43 #include <plat/gpio-cfg-helpers.h>
  44
  45 #include "common.h"
  46
  47 /* Initial IO mappings */
  48
  49 static struct map_desc s3c2410_iodesc[] __initdata = {
  50         IODESC_ENT(CLKPWR),
  51         IODESC_ENT(TIMER),
  52         IODESC_ENT(WATCHDOG),
  53 };
  54
  55 /* our uart devices */
  56
  57 /* uart registration process */
  58
  59 void __init s3c2410_init_uarts(struct s3c2410_uartcfg *cfg, int no)
  60 {
  61         s3c24xx_init_uartdevs("s3c2410-uart", s3c2410_uart_resources, cfg, no);
  62 }
  63
  64 /* s3c2410_map_io
  65  *
  66  * register the standard cpu IO areas, and any passed in from the
  67  * machine specific initialisation.
  68 */
  69
  70 void __init s3c2410_map_io(void)
  71 {
  72         s3c24xx_gpiocfg_default.set_pull = s3c24xx_gpio_setpull_1up;
  73         s3c24xx_gpiocfg_default.get_pull = s3c24xx_gpio_getpull_1up;
  74
  75         iotable_init(s3c2410_iodesc, ARRAY_SIZE(s3c2410_iodesc));
  76 }
  77
  78 struct bus_type s3c2410_subsys = {
  79         .name = "s3c2410-core",
  80         .dev_name = "s3c2410-core",
  81 };
  82
  83 /* Note, we would have liked to name this s3c2410-core, but we cannot
  84  * register two subsystems with the same name.
  85  */
  86 struct bus_type s3c2410a_subsys = {
  87         .name = "s3c2410a-core",
  88         .dev_name = "s3c2410a-core",
  89 };
  90
  91 static struct device s3c2410_dev = {
  92         .bus            = &s3c2410_subsys,
  93 };
  94
  95 /* need to register the subsystem before we actually register the device, and
  96  * we also need to ensure that it has been initialised before any of the
  97  * drivers even try to use it (even if not on an s3c2410 based system)
  98  * as a driver which may support both 2410 and 2440 may try and use it.
  99 */
 100
 101 static int __init s3c2410_core_init(void)
 102 {
 103         return subsys_system_register(&s3c2410_subsys, NULL);
 104 }
 105
 106 core_initcall(s3c2410_core_init);
 107
 108 static int __init s3c2410a_core_init(void)
 109 {
 110         return subsys_system_register(&s3c2410a_subsys, NULL);
 111 }
 112
 113 core_initcall(s3c2410a_core_init);
 114
 115 int __init s3c2410_init(void)
 116 {
 117         printk("S3C2410: Initialising architecture\n");
 118
 119 #ifdef CONFIG_PM_SLEEP
 120         register_syscore_ops(&s3c2410_pm_syscore_ops);
 121         register_syscore_ops(&s3c24xx_irq_syscore_ops);
 122 #endif
 123
 124         return device_register(&s3c2410_dev);
 125 }
 126
 127 int __init s3c2410a_init(void)
 128 {
 129         s3c2410_dev.bus = &s3c2410a_subsys;
 130         return s3c2410_init();
 131 }