.\" Copyright (c) 1997, 1998 .\" Nick Hibma . All rights reserved. .\" .\" Redistribution and use in source and binary forms, with or without .\" modification, are permitted provided that the following conditions .\" are met: .\" 1. Redistributions of source code must retain the above copyright .\" notice, this list of conditions and the following disclaimer. .\" 2. Redistributions in binary form must reproduce the above copyright .\" notice, this list of conditions and the following disclaimer in the .\" documentation and/or other materials provided with the distribution. .\" .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE .\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF .\" SUCH DAMAGE. .\" .Dd September 12, 2020 .Dt HKBD 4 .Os .Sh NAME .Nm hkbd .Nd HID keyboard driver .Sh SYNOPSIS To compile this driver into the kernel, place the following line in your kernel configuration file: .Bd -ragged -offset indent .Cd "device hkbd" .Cd "device hid" .Cd "device hidbus" .Cd "device evdev" .Cd "options EVDEV_SUPPORT" .Ed .Pp Alternatively, to load the driver as a module at boot time, place the following line in .Xr loader.conf 5 : .Bd -literal -offset indent hkbd_load="YES" .Ed .Sh DESCRIPTION The .Nm driver provides support for keyboards that attach to the HID transport backend. .Xr hid 4 , .Xr hidbus 4 , and one of .Xr iichid 4 or .Xr usbhid 4 must be configured in the kernel as well. .Sh CONFIGURATION By default, the keyboard subsystem does not create the appropriate devices yet. Make sure you reconfigure your kernel with the following option in the kernel config file: .Pp .Dl "options KBD_INSTALL_CDEV" .Pp If both an AT keyboard HID keyboards are used at the same time, the AT keyboard will appear as .Pa kbd0 in .Pa /dev . The HID keyboards will be .Pa kbd1 , kbd2 , etc. You can see some information about the keyboard with the following command: .Pp .Dl "kbdcontrol -i < /dev/kbd1" .Pp or load a keymap with .Pp .Dl "kbdcontrol -l keymaps/pt.iso < /dev/kbd1" .Pp See .Xr kbdcontrol 1 for more possible options. .Pp You can swap console keyboards by using the command .Pp .Dl "kbdcontrol -k /dev/kbd1" .Pp From this point on, the first HID keyboard will be the keyboard to be used by the console. .Pp If you want to use a HID keyboard as your default and not use an AT keyboard at all, you will have to remove the .Cd "device atkbd" line from the kernel configuration file. Because of the device initialization order, the HID keyboard will be detected .Em after the console driver initializes itself and you have to explicitly tell the console driver to use the existence of the HID keyboard. This can be done in one of the following two ways. .Pp Run the following command as a part of system initialization: .Pp .Dl "kbdcontrol -k /dev/kbd0 < /dev/ttyv0 > /dev/null" .Pp (Note that as the HID keyboard is the only keyboard, it is accessed as .Pa /dev/kbd0 ) or otherwise tell the console driver to periodically look for a keyboard by setting a flag in the kernel configuration file: .Pp .Dl "device sc0 at isa? flags 0x100" .Pp With the above flag, the console driver will try to detect any keyboard in the system if it did not detect one while it was initialized at boot time. .Sh DRIVER CONFIGURATION .D1 Cd "options KBD_INSTALL_CDEV" .Pp Make the keyboards available through a character device in .Pa /dev . .Pp .D1 Cd options HKBD_DFLT_KEYMAP .D1 Cd makeoptions HKBD_DFLT_KEYMAP=fr.iso .Pp The above lines will put the French ISO keymap in the ukbd driver. You can specify any keymap in .Pa /usr/share/syscons/keymaps or .Pa /usr/share/vt/keymaps (depending on the console driver being used) with this option. .Pp .D1 Cd "options KBD_DISABLE_KEYMAP_LOADING" .Pp Do not allow the user to change the keymap. Note that these options also affect the AT keyboard driver, .Xr atkbd 4 . .Sh SYSCTL VARIABLES The following variables are available as both .Xr sysctl 8 variables and .Xr loader 8 tunables: .Bl -tag -width indent .It Va hw.hid.hkbd.debug Debug output level, where 0 is debugging disabled and larger values increase debug message verbosity. Default is 0. .El .Sh FILES .Bl -tag -width ".Pa /dev/input/event*" -compact .It Pa /dev/kbd* blocking device nodes .It Pa /dev/input/event* input event device nodes. .El .Sh EXAMPLES .D1 Cd "device hkbd" .Pp Add the .Nm driver to the kernel. .Sh SEE ALSO .Xr kbdcontrol 1 , .Xr hid 4 , .Xr hidbus 4 , .Xr iichid 4 , .Xr syscons 4 , .Xr usbhid 4 , .Xr vt 4 , .Xr config 8 .Sh AUTHORS .An -nosplit The .Nm driver was written by .An Lennart Augustsson Aq Mt augustss@cs.chalmers.se for .Nx and was substantially rewritten for .Fx by .An Kazutaka YOKOTA Aq Mt yokota@zodiac.mech.utsunomiya-u.ac.jp . .Pp This manual page was written by .An Nick Hibma Aq Mt n_hibma@FreeBSD.org with a large amount of input from .An Kazutaka YOKOTA Aq Mt yokota@zodiac.mech.utsunomiya-u.ac.jp .