backlight.h

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 2020 Emmanuel Vadot <manu@FreeBSD.org>
    5  *
    6  * Redistribution and use in source and binary forms, with or without
    7  * modification, are permitted provided that the following conditions
    8  * are met:
    9  * 1. Redistributions of source code must retain the above copyright
   10  *    notice, this list of conditions and the following disclaimer.
   11  * 2. Redistributions in binary form must reproduce the above copyright
   12  *    notice, this list of conditions and the following disclaimer in the
   13  *    documentation and/or other materials provided with the distribution.
   14  *
   15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   25  * SUCH DAMAGE.
   26  *
   27  * $FreeBSD$
   28  */
   29 
   30 #ifndef __BACKLIGHT_H__
   31 #define __BACKLIGHT_H__
   32 
   33 #include <sys/types.h>
   34 
   35 #define BACKLIGHTMAXLEVELS 100
   36 
   37 struct backlight_props {
   38         uint32_t        brightness;
   39         uint32_t        nlevels;
   40         uint32_t        levels[BACKLIGHTMAXLEVELS];
   41 };
   42 
   43 enum backlight_info_type {
   44         BACKLIGHT_TYPE_PANEL = 0,
   45         BACKLIGHT_TYPE_KEYBOARD
   46 };
   47 
   48 #define BACKLIGHTMAXNAMELENGTH  64
   49 
   50 struct backlight_info {
   51         char                            name[BACKLIGHTMAXNAMELENGTH];
   52         enum backlight_info_type        type;
   53 };
   54 
   55 /*
   56  * ioctls
   57  */
   58 
   59 #define BACKLIGHTGETSTATUS      _IOWR('G', 0, struct backlight_props)
   60 #define BACKLIGHTUPDATESTATUS   _IOWR('G', 1, struct backlight_props)
   61 #define BACKLIGHTGETINFO        _IOWR('G', 2, struct backlight_info)
   62 
   63 #endif  /* __BACKLIGHT_H__ */

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

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