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.Dd January 26, 2021 25.Dt HSCTRL 4 26.Os 27.Sh NAME 28.Nm hsctrl 29.Nd HID system controls driver 30.Sh SYNOPSIS 31To compile this driver into the kernel, 32place the following lines in your 33kernel configuration file: 34.Bd -ragged -offset indent 35.Cd "device hsctrl" 36.Cd "device hid" 37.Cd "device hidbus" 38.Cd "device hidmap" 39.Cd "device evdev" 40.Ed 41.Pp 42Alternatively, to load the driver as a 43module at boot time, place the following line in 44.Xr loader.conf 5 : 45.Bd -literal -offset indent 46hsctrl_load="YES" 47.Ed 48.Sh DESCRIPTION 49The 50.Nm 51driver provides support for HID system controls most often used as 52"Power off/Sleep keys" found on many keyboards. 53.Pp 54The 55.Pa /dev/input/event* 56device presents the consumer page controls as a 57.Ar evdev 58type device. 59.Sh SYSCTL VARIABLES 60The following variable is available as both 61.Xr sysctl 8 62variable and 63.Xr loader 8 64tunable: 65.Bl -tag -width indent 66.It Va dev.hsctrl.X.debug 67Debug output level, where 0 is debugging disabled and larger values increase 68debug message verbosity. 69Default is 0. 70.El 71.Pp 72It default value is set with 73.Xr loader 8 74tunable: 75.Bl -tag -width indent 76.It Va hw.hid.hsctrl.debug 77.El 78.Sh FILES 79.Bl -tag -width /dev/input/event* -compact 80.It Pa /dev/input/event* 81input event device node. 82.El 83.Sh SEE ALSO 84.Xr iichid 4 , 85.Xr usbhid 4 86.Sh HISTORY 87The 88.Nm 89driver first appeared in 90.Fx 13.0 . 91.Sh AUTHORS 92.An -nosplit 93The 94.Nm 95driver was written by 96.An Vladimir Kondratyev Aq Mt wulf@FreeBSD.org . 97