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/ioccom.h> 34 #include <sys/types.h> 35 36 #define BACKLIGHTMAXLEVELS 100 37 38 struct backlight_props { 39 uint32_t brightness; 40 uint32_t nlevels; 41 uint32_t levels[BACKLIGHTMAXLEVELS]; 42 }; 43 44 enum backlight_info_type { 45 BACKLIGHT_TYPE_PANEL = 0, 46 BACKLIGHT_TYPE_KEYBOARD 47 }; 48 49 #define BACKLIGHTMAXNAMELENGTH 64 50 51 struct backlight_info { 52 char name[BACKLIGHTMAXNAMELENGTH]; 53 enum backlight_info_type type; 54 }; 55 56 /* 57 * ioctls 58 */ 59 60 #define BACKLIGHTGETSTATUS _IOWR('G', 0, struct backlight_props) 61 #define BACKLIGHTUPDATESTATUS _IOWR('G', 1, struct backlight_props) 62 #define BACKLIGHTGETINFO _IOWR('G', 2, struct backlight_info) 63 64 #endif /* __BACKLIGHT_H__ */ 65