/*-
 * Copyright (c) 2001 Mitsuru IWASAKI
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *      $FreeBSD: src/sys/sys/power.h,v 1.3.6.1 2003/08/18 20:22:23 jhb Exp $
 */

#ifndef _SYS_POWER_H_
#define _SYS_POWER_H_

#ifdef _KERNEL

#ifndef _SYS_TYPES_H_
#include <sys/types.h>
#endif
#ifndef _SYS_EVENTHANDLER_H_
#include <sys/eventhandler.h>
#endif

/* Power management system type */
#define POWER_PM_TYPE_APM               0x00
#define POWER_PM_TYPE_ACPI              0x01
#define POWER_PM_TYPE_NONE              0xff

/* Commands for Power management function */
#define POWER_CMD_SUSPEND               0x00

/* Sleep state */
#define POWER_SLEEP_STATE_STANDBY       0x00
#define POWER_SLEEP_STATE_SUSPEND       0x01
#define POWER_SLEEP_STATE_HIBERNATE     0x02

typedef int (*power_pm_fn_t)(u_long, void*, ...);
int      power_pm_register(u_int, power_pm_fn_t, void *);
u_int    power_pm_get_type(void);
void     power_pm_suspend(int);

/*
 * System power API.
 */
#define POWER_PROFILE_PERFORMANCE        0
#define POWER_PROFILE_ECONOMY            1

int     power_profile_get_state(void);
void    power_profile_set_state(int);

typedef void (*power_profile_change_hook)(void *, int);
EVENTHANDLER_DECLARE(power_profile_change, power_profile_change_hook);

#endif /* _KERNEL */

static __inline const char *
powerstate_to_str(int state)
{
        static const char * const strs[] = { "D0", "D1", "D2", "D3hot",
            "D3cold" };

        return (strs[state]);
}

#endif  /* !_SYS_POWER_H_ */