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Ben Dookse4d06e32007-02-16 12:12:31 +01001/* linux/arch/arm/mach-s3c2443/s3c2443.c
2 *
3 * Copyright (c) 2007 Simtec Electronics
4 * Ben Dooks <ben@simtec.co.uk>
5 *
6 * Samsung S3C2443 Mobile CPU support
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>
Yauhen Kharuzhy0536d0d2011-01-06 13:04:33 +090019#include <linux/gpio.h>
Ben Dookse4d06e32007-02-16 12:12:31 +010020#include <linux/platform_device.h>
21#include <linux/serial_core.h>
Kay Sievers4a858cf2011-12-21 16:01:38 -080022#include <linux/device.h>
Ben Dookse4d06e32007-02-16 12:12:31 +010023#include <linux/clk.h>
Russell Kingfced80c2008-09-06 12:10:45 +010024#include <linux/io.h>
Robin Holt7b6d8642013-07-08 16:01:40 -070025#include <linux/reboot.h>
Ben Dookse4d06e32007-02-16 12:12:31 +010026
27#include <asm/mach/arch.h>
28#include <asm/mach/map.h>
29#include <asm/mach/irq.h>
30
Russell Kinga09e64f2008-08-05 16:14:15 +010031#include <mach/hardware.h>
Linus Walleijb0161ca2014-01-14 14:24:24 +010032#include <mach/gpio-samsung.h>
Ben Dookse4d06e32007-02-16 12:12:31 +010033#include <asm/irq.h>
David Howells9f97da72012-03-28 18:30:01 +010034#include <asm/system_misc.h>
Ben Dookse4d06e32007-02-16 12:12:31 +010035
Russell Kinga09e64f2008-08-05 16:14:15 +010036#include <mach/regs-s3c2443-clock.h>
Ben Dookse4d06e32007-02-16 12:12:31 +010037
Yauhen Kharuzhy0536d0d2011-01-06 13:04:33 +090038#include <plat/gpio-core.h>
39#include <plat/gpio-cfg.h>
40#include <plat/gpio-cfg-helpers.h>
Ben Dooksa2b7ba92008-10-07 22:26:09 +010041#include <plat/devs.h>
42#include <plat/cpu.h>
Pawel Osciakeb42b042010-08-10 18:02:37 -070043#include <plat/fb-core.h>
Atul Dahiyaef3f2dd2010-10-18 19:56:45 +090044#include <plat/nand-core.h>
Heiko Stuebner6247cea2011-10-12 21:34:12 +090045#include <plat/adc-core.h>
Heiko Stuebnerb2994d32011-12-24 10:52:23 +090046#include <plat/rtc-core.h>
Heiko Stuebner308b3af2012-10-17 16:47:11 +090047#include <plat/spi-core.h>
Ben Dookse4d06e32007-02-16 12:12:31 +010048
49static struct map_desc s3c2443_iodesc[] __initdata = {
50 IODESC_ENT(WATCHDOG),
51 IODESC_ENT(CLKPWR),
52 IODESC_ENT(TIMER),
53};
54
Kay Sievers4a858cf2011-12-21 16:01:38 -080055struct bus_type s3c2443_subsys = {
Kay Sieversaf5ca3f2007-12-20 02:09:39 +010056 .name = "s3c2443-core",
Kay Sievers4a858cf2011-12-21 16:01:38 -080057 .dev_name = "s3c2443-core",
Ben Dookse4d06e32007-02-16 12:12:31 +010058};
59
Kay Sievers4a858cf2011-12-21 16:01:38 -080060static struct device s3c2443_dev = {
61 .bus = &s3c2443_subsys,
Ben Dookse4d06e32007-02-16 12:12:31 +010062};
63
Robin Holt7b6d8642013-07-08 16:01:40 -070064void s3c2443_restart(enum reboot_mode mode, const char *cmd)
Ben Dooksb4f14eb2007-02-15 22:53:52 +010065{
Robin Holt7b6d8642013-07-08 16:01:40 -070066 if (mode == REBOOT_SOFT)
Heiko Stuebner57538972011-12-22 23:37:44 +010067 soft_restart(0);
68
Ben Dooksb4f14eb2007-02-15 22:53:52 +010069 __raw_writel(S3C2443_SWRST_RESET, S3C2443_SWRST);
70}
71
Ben Dookse4d06e32007-02-16 12:12:31 +010072int __init s3c2443_init(void)
73{
74 printk("S3C2443: Initialising architecture\n");
75
Atul Dahiyaef3f2dd2010-10-18 19:56:45 +090076 s3c_nand_setname("s3c2412-nand");
Pawel Osciakeb42b042010-08-10 18:02:37 -070077 s3c_fb_setname("s3c2443-fb");
Ben Dooksd9c0ebb2007-02-15 22:29:36 +010078
Heiko Stuebner6247cea2011-10-12 21:34:12 +090079 s3c_adc_setname("s3c2443-adc");
Heiko Stuebnerb2994d32011-12-24 10:52:23 +090080 s3c_rtc_setname("s3c2443-rtc");
Heiko Stuebner6247cea2011-10-12 21:34:12 +090081
Ben Dooks7e966f32007-05-20 18:02:50 +010082 /* change WDT IRQ number */
83 s3c_device_wdt.resource[1].start = IRQ_S3C2443_WDT;
84 s3c_device_wdt.resource[1].end = IRQ_S3C2443_WDT;
85
Kay Sievers4a858cf2011-12-21 16:01:38 -080086 return device_register(&s3c2443_dev);
Ben Dookse4d06e32007-02-16 12:12:31 +010087}
88
89void __init s3c2443_init_uarts(struct s3c2410_uartcfg *cfg, int no)
90{
91 s3c24xx_init_uartdevs("s3c2440-uart", s3c2410_uart_resources, cfg, no);
92}
93
94/* s3c2443_map_io
95 *
96 * register the standard cpu IO areas, and any passed in from the
97 * machine specific initialisation.
98 */
99
Ben Dooks74b265d2008-10-21 14:06:31 +0100100void __init s3c2443_map_io(void)
Ben Dookse4d06e32007-02-16 12:12:31 +0100101{
Kukjin Kim782d8a32011-08-30 20:47:32 +0900102 s3c24xx_gpiocfg_default.set_pull = s3c2443_gpio_setpull;
103 s3c24xx_gpiocfg_default.get_pull = s3c2443_gpio_getpull;
Yauhen Kharuzhy0536d0d2011-01-06 13:04:33 +0900104
Heiko Stuebner308b3af2012-10-17 16:47:11 +0900105 /* initialize device information early */
106 s3c64xx_spi_setname("s3c2443-spi");
107
Ben Dookse4d06e32007-02-16 12:12:31 +0100108 iotable_init(s3c2443_iodesc, ARRAY_SIZE(s3c2443_iodesc));
Ben Dookse4d06e32007-02-16 12:12:31 +0100109}
110
Kay Sievers4a858cf2011-12-21 16:01:38 -0800111/* need to register the subsystem before we actually register the device, and
Ben Dookse4d06e32007-02-16 12:12:31 +0100112 * we also need to ensure that it has been initialised before any of the
113 * drivers even try to use it (even if not on an s3c2443 based system)
114 * as a driver which may support both 2443 and 2440 may try and use it.
115*/
116
117static int __init s3c2443_core_init(void)
118{
Kay Sievers4a858cf2011-12-21 16:01:38 -0800119 return subsys_system_register(&s3c2443_subsys, NULL);
Ben Dookse4d06e32007-02-16 12:12:31 +0100120}
121
122core_initcall(s3c2443_core_init);