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 "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
 47static struct map_desc s3c2443_iodesc[] __initdata __maybe_unused = {
 48	IODESC_ENT(WATCHDOG),
 49	IODESC_ENT(CLKPWR),
 50	IODESC_ENT(TIMER),
 51};
 52
 53struct bus_type s3c2443_subsys = {
 54	.name = "s3c2443-core",
 55	.dev_name = "s3c2443-core",
 56};
 57
 58static struct device s3c2443_dev = {
 59	.bus		= &s3c2443_subsys,
 60};
 61
 62int __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
 79void __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
 90void __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
107static int __init s3c2443_core_init(void)
108{
109	return subsys_system_register(&s3c2443_subsys, NULL);
110}
111
112core_initcall(s3c2443_core_init);