NAME¶
ukbd
—
USB keyboard driver
SYNOPSIS¶
To compile this driver into the kernel, place the following line in your kernel
configuration file:
device ukbd
Alternatively, to load the driver as a module at boot time, place the following
line in
loader.conf(5):
DESCRIPTION¶
The
ukbd
driver provides support for
keyboards that attach to the USB port.
usb(4) and
one of
uhci(4) or
ohci(4) must be configured in the kernel as well.
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:
options KBD_INSTALL_CDEV
If both an AT keyboard USB keyboards are used at the same time, the AT keyboard
will appear as
kbd0 in
/dev. The USB keyboards will be
kbd1,
kbd2, etc. You can see some information
about the keyboard with the following command:
kbdcontrol -i <
/dev/kbd1
or load a keymap with
kbdcontrol -l keymaps/pt.iso <
/dev/kbd1
See
kbdcontrol(1) for more possible options.
You can swap console keyboards by using the command
kbdcontrol -k /dev/kbd1
From this point on, the first USB keyboard will be the keyboard to be used by
the console.
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
device
atkbd
line from the kernel configuration file. Because of the device
initialization order, the USB keyboard will be detected
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.
Run the following command as a part of system initialization:
kbdcontrol -k /dev/kbd0 <
/dev/ttyv0 > /dev/null
(Note that as the USB keyboard is the only keyboard, it is accessed as
/dev/kbd0) or otherwise tell the console
driver to periodically look for a keyboard by setting a flag in the kernel
configuration file:
device sc0 at isa? flags
0x100
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.
DRIVER CONFIGURATION¶
options
KBD_INSTALL_CDEV
Make the keyboards available through a character device in
/dev.
options
UKBD_DFLT_KEYMAP
makeoptions
UKBD_DFLT_KEYMAP=fr.iso
The above lines will put the French ISO keymap in the ukbd driver. You can
specify any keymap in
/usr/share/syscons/keymaps or
/usr/share/vt/keymaps (depending on the
console driver being used) with this option.
options
KBD_DISABLE_KEYMAP_LOADING
Do not allow the user to change the keymap. Note that these options also affect
the AT keyboard driver,
atkbd(4).
FILES¶
- /dev/kbd*
- blocking device nodes
EXAMPLES¶
device ukbd
Add the
ukbd
driver to the kernel.
SEE ALSO¶
kbdcontrol(1),
ohci(4),
syscons(4),
uhci(4),
usb(4),
vt(4),
config(8)
AUTHORS¶
The
ukbd
driver was written by
Lennart Augustsson
⟨augustss@cs.chalmers.se⟩ for
NetBSD and
was substantially rewritten for
FreeBSD by
Kazutaka YOKOTA
⟨yokota@zodiac.mech.utsunomiya-u.ac.jp⟩.
This manual page was written by
Nick Hibma
⟨n_hibma@FreeBSD.org⟩ with a large amount of input from
Kazutaka YOKOTA
⟨yokota@zodiac.mech.utsunomiya-u.ac.jp⟩.