arch/arm/mach-s3c/s3c2443.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 //
   3 // Copyright (c) 2007 Simtec Electronics
   4 //   Ben Dooks <ben@simtec.co.uk>
   5 //
   6 // Samsung S3C2443 Mobile CPU support
   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/platform_device.h>
  16 #include <linux/serial_core.h>
  17 #include <linux/device.h>
  18 #include <linux/clk.h>
  19 #include <linux/io.h>
  20 #include <linux/reboot.h>
  21
  22 #include <asm/mach/arch.h>
  23 #include <asm/mach/map.h>
  24 #include <asm/mach/irq.h>
  25
  26 #include "map.h"
  27 #include "gpio-samsung.h"
  28 #include <mach/irqs.h>
  29 #include <asm/irq.h>
  30 #include <asm/system_misc.h>
  31
  32 #include "regs-s3c2443-clock.h"
  33 #include "rtc-core-s3c24xx.h"
  34
  35 #include "gpio-core.h"
  36 #include "gpio-cfg.h"
  37 #include "gpio-cfg-helpers.h"
  38 #include "devs.h"
  39 #include "cpu.h"
  40 #include "adc-core.h"
  41
  42 #include "s3c24xx.h"
  43 #include "fb-core-s3c24xx.h"
  44 #include "nand-core-s3c24xx.h"
  45 #include "spi-core-s3c24xx.h"
  46
  47 static struct map_desc s3c2443_iodesc[] __initdata __maybe_unused = {
  48         IODESC_ENT(WATCHDOG),
  49         IODESC_ENT(CLKPWR),
  50         IODESC_ENT(TIMER),
  51 };
  52
  53 struct bus_type s3c2443_subsys = {
  54         .name = "s3c2443-core",
  55         .dev_name = "s3c2443-core",
  56 };
  57
  58 static struct device s3c2443_dev = {
  59         .bus            = &s3c2443_subsys,
  60 };
  61
  62 int __init s3c2443_init(void)
  63 {
  64         printk("S3C2443: Initialising architecture\n");
  65
  66         s3c_nand_setname("s3c2412-nand");
  67         s3c_fb_setname("s3c2443-fb");
  68
  69         s3c_adc_setname("s3c2443-adc");
  70         s3c_rtc_setname("s3c2443-rtc");
  71
  72         /* change WDT IRQ number */
  73         s3c_device_wdt.resource[1].start = IRQ_S3C2443_WDT;
  74         s3c_device_wdt.resource[1].end   = IRQ_S3C2443_WDT;
  75
  76         return device_register(&s3c2443_dev);
  77 }
  78
  79 void __init s3c2443_init_uarts(struct s3c2410_uartcfg *cfg, int no)
  80 {
  81         s3c24xx_init_uartdevs("s3c2440-uart", s3c2410_uart_resources, cfg, no);
  82 }
  83
  84 /* s3c2443_map_io
  85  *
  86  * register the standard cpu IO areas, and any passed in from the
  87  * machine specific initialisation.
  88  */
  89
  90 void __init s3c2443_map_io(void)
  91 {
  92         s3c24xx_gpiocfg_default.set_pull = s3c2443_gpio_setpull;
  93         s3c24xx_gpiocfg_default.get_pull = s3c2443_gpio_getpull;
  94
  95         /* initialize device information early */
  96         s3c24xx_spi_setname("s3c2443-spi");
  97
  98         iotable_init(s3c2443_iodesc, ARRAY_SIZE(s3c2443_iodesc));
  99 }
 100
 101 /* need to register the subsystem before we actually register the device, and
 102  * we also need to ensure that it has been initialised before any of the
 103  * drivers even try to use it (even if not on an s3c2443 based system)
 104  * as a driver which may support both 2443 and 2440 may try and use it.
 105 */
 106
 107 static int __init s3c2443_core_init(void)
 108 {
 109         return subsys_system_register(&s3c2443_subsys, NULL);
 110 }
 111
 112 core_initcall(s3c2443_core_init);