arch/arm/mach-s3c/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 "map.h"
  29 #include "gpio-samsung.h"
  30 #include <asm/irq.h>
  31 #include <asm/system_misc.h>
  32
  33
  34 #include "regs-clock.h"
  35
  36 #include "cpu.h"
  37 #include "devs.h"
  38 #include "pm.h"
  39
  40 #include "gpio-core.h"
  41 #include "gpio-cfg.h"
  42 #include "gpio-cfg-helpers.h"
  43
  44 #include "s3c24xx.h"
  45
  46 /* Initial IO mappings */
  47
  48 static struct map_desc s3c2410_iodesc[] __initdata __maybe_unused = {
  49         IODESC_ENT(CLKPWR),
  50         IODESC_ENT(TIMER),
  51         IODESC_ENT(WATCHDOG),
  52 };
  53
  54 /* our uart devices */
  55
  56 /* uart registration process */
  57
  58 void __init s3c2410_init_uarts(struct s3c2410_uartcfg *cfg, int no)
  59 {
  60         s3c24xx_init_uartdevs("s3c2410-uart", s3c2410_uart_resources, cfg, no);
  61 }
  62
  63 /* s3c2410_map_io
  64  *
  65  * register the standard cpu IO areas, and any passed in from the
  66  * machine specific initialisation.
  67 */
  68
  69 void __init s3c2410_map_io(void)
  70 {
  71         s3c24xx_gpiocfg_default.set_pull = s3c24xx_gpio_setpull_1up;
  72         s3c24xx_gpiocfg_default.get_pull = s3c24xx_gpio_getpull_1up;
  73
  74         iotable_init(s3c2410_iodesc, ARRAY_SIZE(s3c2410_iodesc));
  75 }
  76
  77 struct bus_type s3c2410_subsys = {
  78         .name = "s3c2410-core",
  79         .dev_name = "s3c2410-core",
  80 };
  81
  82 /* Note, we would have liked to name this s3c2410-core, but we cannot
  83  * register two subsystems with the same name.
  84  */
  85 struct bus_type s3c2410a_subsys = {
  86         .name = "s3c2410a-core",
  87         .dev_name = "s3c2410a-core",
  88 };
  89
  90 static struct device s3c2410_dev = {
  91         .bus            = &s3c2410_subsys,
  92 };
  93
  94 /* need to register the subsystem before we actually register the device, and
  95  * we also need to ensure that it has been initialised before any of the
  96  * drivers even try to use it (even if not on an s3c2410 based system)
  97  * as a driver which may support both 2410 and 2440 may try and use it.
  98 */
  99
 100 static int __init s3c2410_core_init(void)
 101 {
 102         return subsys_system_register(&s3c2410_subsys, NULL);
 103 }
 104
 105 core_initcall(s3c2410_core_init);
 106
 107 static int __init s3c2410a_core_init(void)
 108 {
 109         return subsys_system_register(&s3c2410a_subsys, NULL);
 110 }
 111
 112 core_initcall(s3c2410a_core_init);
 113
 114 int __init s3c2410_init(void)
 115 {
 116         printk("S3C2410: Initialising architecture\n");
 117
 118 #ifdef CONFIG_PM_SLEEP
 119         register_syscore_ops(&s3c2410_pm_syscore_ops);
 120         register_syscore_ops(&s3c24xx_irq_syscore_ops);
 121 #endif
 122
 123         return device_register(&s3c2410_dev);
 124 }
 125
 126 int __init s3c2410a_init(void)
 127 {
 128         s3c2410_dev.bus = &s3c2410a_subsys;
 129         return s3c2410_init();
 130 }