The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 2001 Mitsuru IWASAKI
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   26  * SUCH DAMAGE.
   27  *
   28  *      $FreeBSD: stable/12/sys/sys/power.h 326256 2017-11-27 15:01:59Z pfg $
   29  */
   30 
   31 #ifndef _SYS_POWER_H_
   32 #define _SYS_POWER_H_
   33 
   34 #include <sys/eventhandler.h>
   35 
   36 /* Power management system type */
   37 #define POWER_PM_TYPE_APM               0x00
   38 #define POWER_PM_TYPE_ACPI              0x01
   39 #define POWER_PM_TYPE_NONE              0xff
   40 
   41 /* Commands for Power management function */
   42 #define POWER_CMD_SUSPEND               0x00
   43 
   44 /* Sleep state */
   45 #define POWER_SLEEP_STATE_STANDBY       0x00
   46 #define POWER_SLEEP_STATE_SUSPEND       0x01
   47 #define POWER_SLEEP_STATE_HIBERNATE     0x02
   48 
   49 typedef int (*power_pm_fn_t)(u_long, void*, ...);
   50 extern int       power_pm_register(u_int, power_pm_fn_t, void *);
   51 extern u_int     power_pm_get_type(void);
   52 extern void      power_pm_suspend(int);
   53 
   54 /*
   55  * System power API.
   56  */
   57 #define POWER_PROFILE_PERFORMANCE        0
   58 #define POWER_PROFILE_ECONOMY            1
   59 
   60 extern int      power_profile_get_state(void);
   61 extern void     power_profile_set_state(int);
   62 
   63 typedef void (*power_profile_change_hook)(void *, int);
   64 EVENTHANDLER_DECLARE(power_profile_change, power_profile_change_hook);
   65 
   66 #endif  /* !_SYS_POWER_H_ */
   67 

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