linux/arch/arm/mach-s3c/s3c2410.c
<<
>>
Prefs
   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
  48static 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
  58void __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
  69void __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
  77struct 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 */
  85struct bus_type s3c2410a_subsys = {
  86        .name = "s3c2410a-core",
  87        .dev_name = "s3c2410a-core",
  88};
  89
  90static 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
 100static int __init s3c2410_core_init(void)
 101{
 102        return subsys_system_register(&s3c2410_subsys, NULL);
 103}
 104
 105core_initcall(s3c2410_core_init);
 106
 107static int __init s3c2410a_core_init(void)
 108{
 109        return subsys_system_register(&s3c2410a_subsys, NULL);
 110}
 111
 112core_initcall(s3c2410a_core_init);
 113
 114int __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
 126int __init s3c2410a_init(void)
 127{
 128        s3c2410_dev.bus = &s3c2410a_subsys;
 129        return s3c2410_init();
 130}
 131