#ifndef _LINUX_APM_H

#define _LINUX_APM_H

/*

 * Include file for the interface to an APM BIOS

 * Copyright 1994-2001 Stephen Rothwell (sfr@canb.auug.org.au)

 *

 * This program is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License as published by the

 * Free Software Foundation; either version 2, or (at your option) any

 * later version.

 *

 * This program is distributed in the hope that it will be useful, but

 * WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * General Public License for more details.

 */

#include <linux/types.h>

typedef unsigned short	apm_event_t;

typedef unsigned short	apm_eventinfo_t;

struct apm_bios_info {

	__u16	version;

	__u16	cseg;

	__u32	offset;

	__u16	cseg_16;

	__u16	dseg;

	__u16	flags;

	__u16	cseg_len;

	__u16	cseg_16_len;

	__u16	dseg_len;

};

#ifdef __KERNEL__

#define APM_CS		(GDT_ENTRY_APMBIOS_BASE * 8)

#define APM_CS_16	(APM_CS + 8)

#define APM_DS		(APM_CS_16 + 8)

/* Results of APM Installation Check */

#define APM_16_BIT_SUPPORT	0x0001

#define APM_32_BIT_SUPPORT	0x0002

#define APM_IDLE_SLOWS_CLOCK	0x0004

#define APM_BIOS_DISABLED      	0x0008

#define APM_BIOS_DISENGAGED     0x0010

/*

 * Data for APM that is persistent across module unload/load

 */

struct apm_info {

	struct apm_bios_info	bios;

	unsigned short		connection_version;

	int			get_power_status_broken;

	int			get_power_status_swabinminutes;

	int			allow_ints;

	int			forbid_idle;

	int			realmode_power_off;

	int			disabled;

};

/*

 * The APM function codes

 */

#define	APM_FUNC_INST_CHECK	0x5300

#define	APM_FUNC_REAL_CONN	0x5301

#define	APM_FUNC_16BIT_CONN	0x5302

#define	APM_FUNC_32BIT_CONN	0x5303

#define	APM_FUNC_DISCONN	0x5304

#define	APM_FUNC_IDLE		0x5305

#define	APM_FUNC_BUSY		0x5306

#define	APM_FUNC_SET_STATE	0x5307

#define	APM_FUNC_ENABLE_PM	0x5308

#define	APM_FUNC_RESTORE_BIOS	0x5309

#define	APM_FUNC_GET_STATUS	0x530a

#define	APM_FUNC_GET_EVENT	0x530b

#define	APM_FUNC_GET_STATE	0x530c

#define	APM_FUNC_ENABLE_DEV_PM	0x530d

#define	APM_FUNC_VERSION	0x530e

#define	APM_FUNC_ENGAGE_PM	0x530f

#define	APM_FUNC_GET_CAP	0x5310

#define	APM_FUNC_RESUME_TIMER	0x5311

#define	APM_FUNC_RESUME_ON_RING	0x5312

#define	APM_FUNC_TIMER		0x5313

/*

 * Function code for APM_FUNC_RESUME_TIMER

 */

#define	APM_FUNC_DISABLE_TIMER	0

#define	APM_FUNC_GET_TIMER	1

#define	APM_FUNC_SET_TIMER	2

/*

 * Function code for APM_FUNC_RESUME_ON_RING

 */

#define	APM_FUNC_DISABLE_RING	0

#define	APM_FUNC_ENABLE_RING	1

#define	APM_FUNC_GET_RING	2

/*

 * Function code for APM_FUNC_TIMER_STATUS

 */

#define	APM_FUNC_TIMER_DISABLE	0

#define	APM_FUNC_TIMER_ENABLE	1

#define	APM_FUNC_TIMER_GET	2

/*

 * in arch/i386/kernel/setup.c

 */

extern struct apm_info	apm_info;

#endif	/* __KERNEL__ */

/*

 * Power states

 */

#define APM_STATE_READY		0x0000

#define APM_STATE_STANDBY	0x0001

#define APM_STATE_SUSPEND	0x0002

#define APM_STATE_OFF		0x0003

#define APM_STATE_BUSY		0x0004

#define APM_STATE_REJECT	0x0005

#define APM_STATE_OEM_SYS	0x0020

#define APM_STATE_OEM_DEV	0x0040

#define APM_STATE_DISABLE	0x0000

#define APM_STATE_ENABLE	0x0001

#define APM_STATE_DISENGAGE	0x0000

#define APM_STATE_ENGAGE	0x0001

/*

 * Events (results of Get PM Event)

 */

#define APM_SYS_STANDBY		0x0001

#define APM_SYS_SUSPEND		0x0002

#define APM_NORMAL_RESUME	0x0003

#define APM_CRITICAL_RESUME	0x0004

#define APM_LOW_BATTERY		0x0005

#define APM_POWER_STATUS_CHANGE	0x0006

#define APM_UPDATE_TIME		0x0007

#define APM_CRITICAL_SUSPEND	0x0008

#define APM_USER_STANDBY	0x0009

#define APM_USER_SUSPEND	0x000a

#define APM_STANDBY_RESUME	0x000b

#define APM_CAPABILITY_CHANGE	0x000c

/*

 * Error codes

 */

#define APM_SUCCESS		0x00

#define APM_DISABLED		0x01

#define APM_CONNECTED		0x02

#define APM_NOT_CONNECTED	0x03

#define APM_16_CONNECTED	0x05

#define APM_16_UNSUPPORTED	0x06

#define APM_32_CONNECTED	0x07

#define APM_32_UNSUPPORTED	0x08

#define APM_BAD_DEVICE		0x09

#define APM_BAD_PARAM		0x0a

#define APM_NOT_ENGAGED		0x0b

#define APM_BAD_FUNCTION	0x0c

#define APM_RESUME_DISABLED	0x0d

#define APM_NO_ERROR		0x53

#define APM_BAD_STATE		0x60

#define APM_NO_EVENTS		0x80

#define APM_NOT_PRESENT		0x86

/*

 * APM Device IDs

 */

#define APM_DEVICE_BIOS		0x0000

#define APM_DEVICE_ALL		0x0001

#define APM_DEVICE_DISPLAY	0x0100

#define APM_DEVICE_STORAGE	0x0200

#define APM_DEVICE_PARALLEL	0x0300

#define APM_DEVICE_SERIAL	0x0400

#define APM_DEVICE_NETWORK	0x0500

#define APM_DEVICE_PCMCIA	0x0600

#define APM_DEVICE_BATTERY	0x8000

#define APM_DEVICE_OEM		0xe000

#define APM_DEVICE_OLD_ALL	0xffff

#define APM_DEVICE_CLASS	0x00ff

#define APM_DEVICE_MASK		0xff00

#ifdef __KERNEL__

/*

 * This is the "All Devices" ID communicated to the BIOS

 */

#define APM_DEVICE_BALL		((apm_info.connection_version > 0x0100) ? \

				 APM_DEVICE_ALL : APM_DEVICE_OLD_ALL)

#endif

/*

 * Battery status

 */

#define APM_MAX_BATTERIES	2

/*

 * APM defined capability bit flags

 */

#define APM_CAP_GLOBAL_STANDBY		0x0001

#define APM_CAP_GLOBAL_SUSPEND		0x0002

#define APM_CAP_RESUME_STANDBY_TIMER	0x0004 /* Timer resume from standby */

#define APM_CAP_RESUME_SUSPEND_TIMER	0x0008 /* Timer resume from suspend */

#define APM_CAP_RESUME_STANDBY_RING	0x0010 /* Resume on Ring fr standby */

#define APM_CAP_RESUME_SUSPEND_RING	0x0020 /* Resume on Ring fr suspend */

#define APM_CAP_RESUME_STANDBY_PCMCIA	0x0040 /* Resume on PCMCIA Ring	*/

#define APM_CAP_RESUME_SUSPEND_PCMCIA	0x0080 /* Resume on PCMCIA Ring	*/

/*

 * ioctl operations

 */

#include <linux/ioctl.h>

#define APM_IOC_STANDBY		_IO('A', 1)

#define APM_IOC_SUSPEND		_IO('A', 2)

#endif	/* LINUX_APM_H */