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  * Copyright (c) 2001 Mitsuru IWASAKI
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  *
   14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   24  * SUCH DAMAGE.
   25  *
   26  *      $FreeBSD: src/sys/sys/power.h,v 1.3 2002/07/15 14:06:03 markm Exp $
   27  */
   28 
   29 #ifndef _SYS_POWER_H_
   30 #define _SYS_POWER_H_
   31 
   32 #include <sys/eventhandler.h>
   33 
   34 /* Power management system type */
   35 #define POWER_PM_TYPE_APM               0x00
   36 #define POWER_PM_TYPE_ACPI              0x01
   37 #define POWER_PM_TYPE_NONE              0xff
   38 
   39 /* Commands for Power management function */
   40 #define POWER_CMD_SUSPEND               0x00
   41 
   42 /* Sleep state */
   43 #define POWER_SLEEP_STATE_STANDBY       0x00
   44 #define POWER_SLEEP_STATE_SUSPEND       0x01
   45 #define POWER_SLEEP_STATE_HIBERNATE     0x02
   46 
   47 typedef int (*power_pm_fn_t)(u_long, void*, ...);
   48 extern int       power_pm_register(u_int, power_pm_fn_t, void *);
   49 extern u_int     power_pm_get_type(void);
   50 extern void      power_pm_suspend(int);
   51 
   52 /*
   53  * System power API.
   54  */
   55 #define POWER_PROFILE_PERFORMANCE        0
   56 #define POWER_PROFILE_ECONOMY            1
   57 
   58 extern int      power_profile_get_state(void);
   59 extern void     power_profile_set_state(int);
   60 
   61 typedef void (*power_profile_change_hook)(void *, int);
   62 EVENTHANDLER_DECLARE(power_profile_change, power_profile_change_hook);
   63 
   64 #endif  /* !_SYS_POWER_H_ */
   65 

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