1.\" Copyright (c) 2020 Vladimir Kondratyev <wulf@FreeBSD.org> 2.\" 3.\" Redistribution and use in source and binary forms, with or without 4.\" modification, are permitted provided that the following conditions 5.\" are met: 6.\" 1. Redistributions of source code must retain the above copyright 7.\" notice, this list of conditions and the following disclaimer. 8.\" 2. Redistributions in binary form must reproduce the above copyright 9.\" notice, this list of conditions and the following disclaimer in the 10.\" documentation and/or other materials provided with the distribution. 11.\" 12.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 13.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 14.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 15.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 16.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 17.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 18.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 19.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 20.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 21.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 22.\" SUCH DAMAGE. 23.\" 24.\" $FreeBSD$ 25.\" 26.Dd January 26, 2021 27.Dt HSCTRL 4 28.Os 29.Sh NAME 30.Nm hsctrl 31.Nd HID system controls driver 32.Sh SYNOPSIS 33To compile this driver into the kernel, 34place the following lines in your 35kernel configuration file: 36.Bd -ragged -offset indent 37.Cd "device hsctrl" 38.Cd "device hid" 39.Cd "device hidbus" 40.Cd "device hidmap" 41.Cd "device evdev" 42.Ed 43.Pp 44Alternatively, to load the driver as a 45module at boot time, place the following line in 46.Xr loader.conf 5 : 47.Bd -literal -offset indent 48hsctrl_load="YES" 49.Ed 50.Sh DESCRIPTION 51The 52.Nm 53driver provides support for HID system controls most often used as 54"Power off/Sleep keys" found on many keyboards. 55.Pp 56The 57.Pa /dev/input/event* 58device presents the consumer page controls as a 59.Ar evdev 60type device. 61.Sh SYSCTL VARIABLES 62The following variable is available as both 63.Xr sysctl 8 64variable and 65.Xr loader 8 66tunable: 67.Bl -tag -width indent 68.It Va dev.hsctrl.X.debug 69Debug output level, where 0 is debugging disabled and larger values increase 70debug message verbosity. 71Default is 0. 72.El 73.Pp 74It default value is set with 75.Xr loader 8 76tunable: 77.Bl -tag -width indent 78.It Va hw.hid.hsctrl.debug 79.El 80.Sh FILES 81.Bl -tag -width /dev/input/event* -compact 82.It Pa /dev/input/event* 83input event device node. 84.El 85.Sh SEE ALSO 86.Xr iichid 4 , 87.Xr usbhid 4 88.Sh HISTORY 89The 90.Nm 91driver first appeared in 92.Fx 13.0. 93.Sh AUTHORS 94.An -nosplit 95The 96.Nm 97driver was written by 98.An Vladimir Kondratyev Aq Mt wulf@FreeBSD.org . 99