103 lines
2.9 KiB
Groff
103 lines
2.9 KiB
Groff
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.\" 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 September 14, 2020
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.Dt HIDBUS 4
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.Os
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.Sh NAME
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.Nm hidbus
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.Nd generic HID bus 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 hidbus"
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.Cd "device hid"
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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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hidbus_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 multiple HID driver attachments to single HID
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transport backend.
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See
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.Xr iichid 4
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or
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.Xr usbhid 4 .
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.Pp
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Each HID device can have several components, e.g., a keyboard and
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a mouse.
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These components use different report identifiers (a byte) combined into
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groups called collections to distinguish which one data is coming from.
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The
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.Nm
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driver has other drivers attached that handle particular
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kinds of devices and
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.Nm
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broadcasts data to all of them.
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.Sh SYSCTL VARIABLES
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The following variables are available as both
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.Xr sysctl 8
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variables and
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.Xr loader 8
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tunables:
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.Bl -tag -width indent
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.It Va hw.hid.hidbus.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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.Sh SEE ALSO
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.Xr hconf 4 ,
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.Xr hcons 4 ,
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.Xr hgame 4 ,
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.Xr hidraw 4 ,
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.Xr hkbd 4 ,
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.Xr hms 4 ,
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.Xr hmt 4 ,
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.Xr hpen 4 ,
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.Xr hsctrl 4 ,
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.Xr hskbd 4 ,
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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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