[deliverable/linux.git] / arch / arm / mach-s3c24xx / s3c244x.c

/* linux/arch/arm/plat-s3c24xx/s3c244x.c
 *
 * Copyright (c) 2004-2006 Simtec Electronics
 *   Ben Dooks <ben@simtec.co.uk>
 *
 * Samsung S3C2440 and S3C2442 Mobile CPU support (not S3C2443)
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
*/

#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/interrupt.h>
#include <linux/list.h>
#include <linux/timer.h>
#include <linux/init.h>
#include <linux/serial_core.h>
#include <linux/serial_s3c.h>
#include <linux/platform_device.h>
#include <linux/reboot.h>
#include <linux/device.h>
#include <linux/syscore_ops.h>
#include <linux/clk.h>
#include <linux/io.h>

#include <asm/system_misc.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/irq.h>

#include <mach/hardware.h>
#include <asm/irq.h>

#include <plat/cpu-freq.h>

#include <mach/regs-clock.h>
#include <mach/regs-gpio.h>

#include <plat/devs.h>
#include <plat/cpu.h>
#include <plat/pm.h>
#include <plat/nand-core.h>
#include <plat/watchdog-reset.h>

#include "common.h"
#include "regs-dsc.h"

static struct map_desc s3c244x_iodesc[] __initdata = {
	IODESC_ENT(CLKPWR),
	IODESC_ENT(TIMER),
	IODESC_ENT(WATCHDOG),
};

/* uart initialisation */

void __init s3c244x_init_uarts(struct s3c2410_uartcfg *cfg, int no)
{
	s3c24xx_init_uartdevs("s3c2440-uart", s3c2410_uart_resources, cfg, no);
}

void __init s3c244x_map_io(void)
{
	/* register our io-tables */

	iotable_init(s3c244x_iodesc, ARRAY_SIZE(s3c244x_iodesc));

	/* rename any peripherals used differing from the s3c2410 */

	s3c_device_sdi.name  = "s3c2440-sdi";
	s3c_device_i2c0.name  = "s3c2440-i2c";
	s3c_nand_setname("s3c2440-nand");
	s3c_device_ts.name = "s3c2440-ts";
	s3c_device_usbgadget.name = "s3c2440-usbgadget";
	s3c2410_device_dclk.name = "s3c2440-dclk";
}

/* Since the S3C2442 and S3C2440 share items, put both subsystems here */

struct bus_type s3c2440_subsys = {
	.name		= "s3c2440-core",
	.dev_name	= "s3c2440-core",
};

struct bus_type s3c2442_subsys = {
	.name		= "s3c2442-core",
	.dev_name	= "s3c2442-core",
};

/* need to register the subsystem before we actually register the device, and
 * we also need to ensure that it has been initialised before any of the
 * drivers even try to use it (even if not on an s3c2440 based system)
 * as a driver which may support both 2410 and 2440 may try and use it.
*/

static int __init s3c2440_core_init(void)
{
	return subsys_system_register(&s3c2440_subsys, NULL);
}

core_initcall(s3c2440_core_init);

static int __init s3c2442_core_init(void)
{
	return subsys_system_register(&s3c2442_subsys, NULL);
}

core_initcall(s3c2442_core_init);


#ifdef CONFIG_PM
static struct sleep_save s3c244x_sleep[] = {
	SAVE_ITEM(S3C2440_DSC0),
	SAVE_ITEM(S3C2440_DSC1),
	SAVE_ITEM(S3C2440_GPJDAT),
	SAVE_ITEM(S3C2440_GPJCON),
	SAVE_ITEM(S3C2440_GPJUP)
};

static int s3c244x_suspend(void)
{
	s3c_pm_do_save(s3c244x_sleep, ARRAY_SIZE(s3c244x_sleep));
	return 0;
}

static void s3c244x_resume(void)
{
	s3c_pm_do_restore(s3c244x_sleep, ARRAY_SIZE(s3c244x_sleep));
}
#else
#define s3c244x_suspend NULL
#define s3c244x_resume  NULL
#endif

struct syscore_ops s3c244x_pm_syscore_ops = {
	.suspend	= s3c244x_suspend,
	.resume		= s3c244x_resume,
};

void s3c244x_restart(enum reboot_mode mode, const char *cmd)
{
	if (mode == REBOOT_SOFT)
		soft_restart(0);

	samsung_wdt_reset();

	/* we'll take a jump through zero as a poor second */
	soft_restart(0);
}
Commit	Line	Data
	1	/* linux/arch/arm/plat-s3c24xx/s3c244x.c
	2	*
	3	* Copyright (c) 2004-2006 Simtec Electronics
	4	* Ben Dooks <ben@simtec.co.uk>
	5	*
	6	* Samsung S3C2440 and S3C2442 Mobile CPU support (not S3C2443)
	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>
	19	#include <linux/serial_core.h>
	20	#include <linux/serial_s3c.h>
	21	#include <linux/platform_device.h>
	22	#include <linux/reboot.h>
	23	#include <linux/device.h>
	24	#include <linux/syscore_ops.h>
	25	#include <linux/clk.h>
	26	#include <linux/io.h>
	27
	28	#include <asm/system_misc.h>
	29	#include <asm/mach/arch.h>
	30	#include <asm/mach/map.h>
	31	#include <asm/mach/irq.h>
	32
	33	#include <mach/hardware.h>
	34	#include <asm/irq.h>
	35
	36	#include <plat/cpu-freq.h>
	37
	38	#include <mach/regs-clock.h>
	39	#include <mach/regs-gpio.h>
	40
	41	#include <plat/devs.h>
	42	#include <plat/cpu.h>
	43	#include <plat/pm.h>
	44	#include <plat/nand-core.h>
	45	#include <plat/watchdog-reset.h>
	46
	47	#include "common.h"
	48	#include "regs-dsc.h"
	49
	50	static struct map_desc s3c244x_iodesc[] __initdata = {
	51	IODESC_ENT(CLKPWR),
	52	IODESC_ENT(TIMER),
	53	IODESC_ENT(WATCHDOG),
	54	};
	55
	56	/* uart initialisation */
	57
	58	void __init s3c244x_init_uarts(struct s3c2410_uartcfg *cfg, int no)
	59	{
	60	s3c24xx_init_uartdevs("s3c2440-uart", s3c2410_uart_resources, cfg, no);
	61	}
	62
	63	void __init s3c244x_map_io(void)
	64	{
	65	/* register our io-tables */
	66
	67	iotable_init(s3c244x_iodesc, ARRAY_SIZE(s3c244x_iodesc));
	68
	69	/* rename any peripherals used differing from the s3c2410 */
	70
	71	s3c_device_sdi.name = "s3c2440-sdi";
	72	s3c_device_i2c0.name = "s3c2440-i2c";
	73	s3c_nand_setname("s3c2440-nand");
	74	s3c_device_ts.name = "s3c2440-ts";
	75	s3c_device_usbgadget.name = "s3c2440-usbgadget";
	76	s3c2410_device_dclk.name = "s3c2440-dclk";
	77	}
	78
	79	/* Since the S3C2442 and S3C2440 share items, put both subsystems here */
	80
	81	struct bus_type s3c2440_subsys = {
	82	.name = "s3c2440-core",
	83	.dev_name = "s3c2440-core",
	84	};
	85
	86	struct bus_type s3c2442_subsys = {
	87	.name = "s3c2442-core",
	88	.dev_name = "s3c2442-core",
	89	};
	90
	91	/* need to register the subsystem before we actually register the device, and
	92	* we also need to ensure that it has been initialised before any of the
	93	* drivers even try to use it (even if not on an s3c2440 based system)
	94	* as a driver which may support both 2410 and 2440 may try and use it.
	95	*/
	96
	97	static int __init s3c2440_core_init(void)
	98	{
	99	return subsys_system_register(&s3c2440_subsys, NULL);
	100	}
	101
	102	core_initcall(s3c2440_core_init);
	103
	104	static int __init s3c2442_core_init(void)
	105	{
	106	return subsys_system_register(&s3c2442_subsys, NULL);
	107	}
	108
	109	core_initcall(s3c2442_core_init);
	110
	111
	112	#ifdef CONFIG_PM
	113	static struct sleep_save s3c244x_sleep[] = {
	114	SAVE_ITEM(S3C2440_DSC0),
	115	SAVE_ITEM(S3C2440_DSC1),
	116	SAVE_ITEM(S3C2440_GPJDAT),
	117	SAVE_ITEM(S3C2440_GPJCON),
	118	SAVE_ITEM(S3C2440_GPJUP)
	119	};
	120
	121	static int s3c244x_suspend(void)
	122	{
	123	s3c_pm_do_save(s3c244x_sleep, ARRAY_SIZE(s3c244x_sleep));
	124	return 0;
	125	}
	126
	127	static void s3c244x_resume(void)
	128	{
	129	s3c_pm_do_restore(s3c244x_sleep, ARRAY_SIZE(s3c244x_sleep));
	130	}
	131	#else
	132	#define s3c244x_suspend NULL
	133	#define s3c244x_resume NULL
	134	#endif
	135
	136	struct syscore_ops s3c244x_pm_syscore_ops = {
	137	.suspend = s3c244x_suspend,
	138	.resume = s3c244x_resume,
	139	};
	140
	141	void s3c244x_restart(enum reboot_mode mode, const char *cmd)
	142	{
	143	if (mode == REBOOT_SOFT)
	144	soft_restart(0);
	145
	146	samsung_wdt_reset();
	147
	148	/* we'll take a jump through zero as a poor second */
	149	soft_restart(0);
	150	}