arch/arm/mach-s3c24xx/s3c2410.c

   1 /* linux/arch/arm/mach-s3c2410/s3c2410.c
   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  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11 */
  12
  13 #include <linux/kernel.h>
  14 #include <linux/types.h>
  15 #include <linux/interrupt.h>
  16 #include <linux/list.h>
  17 #include <linux/timer.h>
  18 #include <linux/init.h>
  19 #include <linux/gpio.h>
  20 #include <linux/clk.h>
  21 #include <linux/device.h>
  22 #include <linux/syscore_ops.h>
  23 #include <linux/serial_core.h>
  24 #include <linux/serial_s3c.h>
  25 #include <linux/platform_device.h>
  26 #include <linux/reboot.h>
  27 #include <linux/io.h>
  28
  29 #include <asm/mach/arch.h>
  30 #include <asm/mach/map.h>
  31 #include <asm/mach/irq.h>
  32
  33 #include <mach/hardware.h>
  34 #include <mach/gpio-samsung.h>
  35 #include <asm/irq.h>
  36 #include <asm/system_misc.h>
  37
  38 #include <plat/cpu-freq.h>
  39
  40 #include <mach/regs-clock.h>
  41
  42 #include <plat/cpu.h>
  43 #include <plat/devs.h>
  44 #include <plat/pm.h>
  45
  46 #include <plat/gpio-core.h>
  47 #include <plat/gpio-cfg.h>
  48 #include <plat/gpio-cfg-helpers.h>
  49
  50 #include "common.h"
  51
  52 /* Initial IO mappings */
  53
  54 static struct map_desc s3c2410_iodesc[] __initdata = {
  55         IODESC_ENT(CLKPWR),
  56         IODESC_ENT(TIMER),
  57         IODESC_ENT(WATCHDOG),
  58 };
  59
  60 /* our uart devices */
  61
  62 /* uart registration process */
  63
  64 void __init s3c2410_init_uarts(struct s3c2410_uartcfg *cfg, int no)
  65 {
  66         s3c24xx_init_uartdevs("s3c2410-uart", s3c2410_uart_resources, cfg, no);
  67 }
  68
  69 /* s3c2410_map_io
  70  *
  71  * register the standard cpu IO areas, and any passed in from the
  72  * machine specific initialisation.
  73 */
  74
  75 void __init s3c2410_map_io(void)
  76 {
  77         s3c24xx_gpiocfg_default.set_pull = s3c24xx_gpio_setpull_1up;
  78         s3c24xx_gpiocfg_default.get_pull = s3c24xx_gpio_getpull_1up;
  79
  80         iotable_init(s3c2410_iodesc, ARRAY_SIZE(s3c2410_iodesc));
  81 }
  82
  83 struct bus_type s3c2410_subsys = {
  84         .name = "s3c2410-core",
  85         .dev_name = "s3c2410-core",
  86 };
  87
  88 /* Note, we would have liked to name this s3c2410-core, but we cannot
  89  * register two subsystems with the same name.
  90  */
  91 struct bus_type s3c2410a_subsys = {
  92         .name = "s3c2410a-core",
  93         .dev_name = "s3c2410a-core",
  94 };
  95
  96 static struct device s3c2410_dev = {
  97         .bus            = &s3c2410_subsys,
  98 };
  99
 100 /* need to register the subsystem before we actually register the device, and
 101  * we also need to ensure that it has been initialised before any of the
 102  * drivers even try to use it (even if not on an s3c2410 based system)
 103  * as a driver which may support both 2410 and 2440 may try and use it.
 104 */
 105
 106 static int __init s3c2410_core_init(void)
 107 {
 108         return subsys_system_register(&s3c2410_subsys, NULL);
 109 }
 110
 111 core_initcall(s3c2410_core_init);
 112
 113 static int __init s3c2410a_core_init(void)
 114 {
 115         return subsys_system_register(&s3c2410a_subsys, NULL);
 116 }
 117
 118 core_initcall(s3c2410a_core_init);
 119
 120 int __init s3c2410_init(void)
 121 {
 122         printk("S3C2410: Initialising architecture\n");
 123
 124 #ifdef CONFIG_PM_SLEEP
 125         register_syscore_ops(&s3c2410_pm_syscore_ops);
 126         register_syscore_ops(&s3c24xx_irq_syscore_ops);
 127 #endif
 128
 129         return device_register(&s3c2410_dev);
 130 }
 131
 132 int __init s3c2410a_init(void)
 133 {
 134         s3c2410_dev.bus = &s3c2410a_subsys;
 135         return s3c2410_init();
 136 }