freebsd-dev/share/man/man4/ukbd.4

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.Dd April 11, 1999
.Dt UKBD 4
.Os
.Sh NAME
.Nm ukbd
.Nd USB keyboard driver
.Sh SYNOPSIS
.Cd "device ukbd"
.Sh DESCRIPTION
The
.Nm
driver provides support for keyboards that attach to the USB port.
.Xr usb 4
and one of
.Xr uhci 4
or
.Xr ohci 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 USB keyboards are used at the same time, the
AT keyboard will appear as
.Pa kbd0
in
.Pa /dev .
The USB 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 USB keyboard will be the keyboard
to be used by the console.
.Pp
If you want to use a USB 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 USB 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 USB 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 USB 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 UKBD_DFLT_KEYMAP
.D1 Cd makeoptions UKBD_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
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 FILES
.Bl -tag -width ".Pa /dev/kbd*" -compact
.It Pa /dev/kbd*
blocking device nodes
.El
.Sh EXAMPLES
.D1 Cd "device ukbd"
.Pp
Add the
.Nm
driver to the kernel.
.Sh SEE ALSO
.Xr kbdcontrol 1 ,
.Xr ohci 4 ,
.Xr syscons 4 ,
.Xr uhci 4 ,
.Xr usb 4 ,
.Xr config 8
.Sh AUTHORS
.An -nosplit
The
.Nm
driver was written by
.An Lennart Augustsson Aq augustss@cs.chalmers.se
for
.Nx
and was substantially rewritten for
.Fx
by
.An Kazutaka YOKOTA Aq yokota@zodiac.mech.utsunomiya-u.ac.jp .
.Pp
This manual page was written by
.An Nick Hibma Aq n_hibma@FreeBSD.org
with a large amount of input from
.An Kazutaka YOKOTA Aq yokota@zodiac.mech.utsunomiya-u.ac.jp .