0d528e6354
Submitted by: Shunchao Hu <ankohuu_outlook.com> Reviewed by: wulf, gbe MFC after: 1 week Differential revision: https://reviews.freebsd.org/D28294
99 lines
2.8 KiB
Groff
99 lines
2.8 KiB
Groff
.\" Copyright (c) 2020 Vladimir Kondratyev <wulf@FreeBSD.org>
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd January 23, 2021
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.Dt HCONS 4
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.Os
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.Sh NAME
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.Nm hcons
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.Nd HID consumer page controls driver
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.Sh SYNOPSIS
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To compile this driver into the kernel,
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place the following lines in your
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kernel configuration file:
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.Bd -ragged -offset indent
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.Cd "device hcons"
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.Cd "device hid"
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.Cd "device hidbus"
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.Cd "device hidmap"
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.Cd "device evdev"
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.Ed
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.Pp
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Alternatively, to load the driver as a
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module at boot time, place the following line in
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.Xr loader.conf 5 :
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.Bd -literal -offset indent
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hcons_load="YES"
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.Ed
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.Sh DESCRIPTION
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The
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.Nm
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driver provides support for HID consumer page controls most often used as
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"Multimedia keys" found on many keyboards.
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.Pp
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The
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.Pa /dev/input/event*
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device presents the consumer page controls as a
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.Ar evdev
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type device.
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.Sh SYSCTL VARIABLES
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The following variable is available as both
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.Xr sysctl 8
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variable and
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.Xr loader 8
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tunable:
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.Bl -tag -width indent
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.It Va dev.hcons.X.debug
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Debug output level, where 0 is debugging disabled and larger values increase
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debug message verbosity.
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Default is 0.
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.El
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.Pp
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It default value is set with
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.Xr loader 8
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tunable:
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.Bl -tag -width indent
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.It Va hw.hid.hcons.debug
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.El
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.Sh FILES
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.Bl -tag -width /dev/input/event* -compact
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.It Pa /dev/input/event*
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input event device node.
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.El
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.Sh SEE ALSO
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.Xr iichid 4 ,
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.Xr usbhid 4
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.Sh HISTORY
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The
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.Nm
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driver first appeared in
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.Fx 13.0.
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.Sh AUTHORS
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.An -nosplit
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The
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.Nm
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driver was written by
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.An Vladimir Kondratyev Aq Mt wulf@FreeBSD.org .
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