FreeBSD/Linux Kernel Cross Reference
sys/sys/power.h

     /*-
      * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
      *
      * 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.
     *
     *      $FreeBSD$
     */
    
    #ifndef _SYS_POWER_H_
    #define _SYS_POWER_H_
    
    #include <sys/_eventhandler.h>
    
    /* Power management system type */
    #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*, ...);
    extern int       power_pm_register(u_int, power_pm_fn_t, void *);
    extern u_int     power_pm_get_type(void);
    extern void      power_pm_suspend(int);
    
    /*
     * System power API.
     */
    #define POWER_PROFILE_PERFORMANCE        0
    #define POWER_PROFILE_ECONOMY            1
    
    extern int      power_profile_get_state(void);
    extern void     power_profile_set_state(int);
    
    typedef void (*power_profile_change_hook)(void *, int);
    EVENTHANDLER_DECLARE(power_profile_change, power_profile_change_hook);
    
    #endif  /* !_SYS_POWER_H_ */

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