Provided by: xserver-xorg-input-joystick_1.6.2-1build4_amd64 
NAME
joystick - Joystick input driver
SYNOPSIS
Snipped for xorg.conf.d(5):
Section "InputClass"
Identifier "joystick-all"
Driver "joystick"
Option "MatchIsJoystick" "on"
Option "MatchDevicePath "/dev/input/event*"
...
EndSection
DESCRIPTION
joystick is an Xorg input driver for controlling the pointer with a joystick device.
Use this driver, if you want to
- generate cursor movement, perform button or key events to control desktop and
applications
- generate cursor key events for playing legacy games, that have no native joystick
support
Do not use, if you want to
- play games, that have native joystick support
- use XI2 applications. The evdev(4) driver will suffice for those in most cases.
You may mix above scenarios by setting the device floating. The driver reports relative
cursor movement, button and key events, as well as raw axis values through valuators.
SUPPORTED HARDWARE
The joystick input module can be used on top of the following kernel devices:
- Linux's evdev device
- Linux's joystick device
- BSD's usbhid device
Every joystick supported by the kernel should be supported by the joystick input driver.
The joystick is assumed to be calibrated and reporting axis values between -32768 and
32768. See the Linux kernel documentation for a complete list of supported devices.
There is no support for force feedback at the moment.
CONFIGURATION DETAILS
Please refer to xorg.conf(5) for general configuration details. This section only covers
configuration details specific to this driver.
The following Driver Options are supported:
Option "Device" "string"
Option "Path" "string"
Specifies the device through which the joystick can be accessed. This option is
mandatory and there is no default setting.
In Linux, joysticks are usually accessible through /dev/input/jsX or
/dev/input/eventX.
In *BSD, joysticks are usually recognized as /dev/uhidX.
Option "AutoRepeat" "delay rate"
Sets the auto repeat behaviour for key events. delay is the time in milliseconds
before a key starts repeating. rate is the number of times a key repeats per
second. Default: Xorg default
Option "DebugLevel" "integer"
Controls the verbosity of the driver for debugging purposes. The higher the
DebugLevel, the more output is produced. Default: 0
Option "MapButton<number>" "string"
Sets the mapping of a joystick button to the desired action. Button counting starts
with 1, Possible options are:
none Don't do anything
"button=<number>"
Generate a pointer button event with button number (starting with 1).
"axis=[<factor>]<axis>"
Where <axis> is one of: x, y, zx, zy
and <factor> is an optional amplifier of the axis, like -, +, -5, 0.4, 1.3,
... Negative values invert the direction. Default: 1.0
"amplify=<factor>"
Amplifies the movement of all axes by the given factor when this button is
held down. Different factors can be combined.
"key=<scancode>[,<scancode>[,<scancode>[,<scancode>]]]
When button is pressed, a series of keydown events with the specified
scancodes is generated. When the button is released, matching keyup events
in the opposite order are generated. You can specify up to 4 scancodes per
button.
See special section about key events below.
"disable-mouse"
"disable-keys"
"disable-all"
Disables either the generation of mouse events, key events or the generation
of all X events by the driver. Press button again to allow the driver to
generate events again.
You may also set the device floating from client space to prevent it from
generating core events.
Option "MapAxis<number>" "string"
Sets the mapping of the axis to the desired action. Axis counting starts with 1,
the parameter may contain:
"mode=<string>"
Where <string> can be one of:
none, relative, accelerated, absolute
"valuator"
Send extra valuator events for this axis. The valuators will be numbered
ascending, starting with 2 (valuator 0 and 1 are reserved for pointer
movement). Please consider using the evdev(4) input driver if you are only
interested in XI2 features.
The range of the valuators is always -32767 to 32768. Neither mode nor axis
needs to be set to generate extra valuator events. The axis will be labelled
according to its physical axis number, beginning with 1 , e.g. "Axis 1" for
the first axis (being the 3rd valuator). Default: not set.
"axis=[<factor>]<axis>"
Where <axis> is one of: x, y, zx, zy, key (see keylow/keyhigh)
and <factor> is an optional amplifier of the axis, like -, +, -5, 0.4, 1.3,
... Negative values will invert the movement. Default: 1.0
"keylow=<scancode>[,<scancode>[,<scancode>[,<scancode>]]]
"keyhigh=<scancode>[,<scancode>[,<scancode>[,<scancode>]]]
When the axis is moved out of the deadzone, a series of keydown events
according to the direction of the movement is generated. When the axis is
released, matching keyup events in opposite order will be generated. You can
specify up to 4 scancodes for each direction.
keylow defines the keys to be generated when the axis is moved in negative
direction (left or up), keyhigh defines the keys to be generated when the
axis is moved in positive direction (right or down).
If mode is set to relative: The driver will emulate autorepeat according to
the current value of the axis. A keydown and subsequent keyup event will be
generated in short time intervals. To modify that interval and the
autorepeat speed, supply the "axis=[<factor>]KEY" parameter.
If mode is set to accelerated: Keydown and keyup events will be generated
repeatedly. The time between a keydown and a keyup event corresponds to the
deflection of the axis. If the axis is deflected by 30%, the key will be
considered to be down 300ms out of 1 second. The exact intervals may vary
and can be adjusted with the amplify parameter. If the axis is deflected by
100%, there will only be one keydown event, so the key is considered down
all the time. The keys will be autorepeated according to the Xorg keyboard
settings.
See special section about key events below.
"deadzone=<number>"
Sets the unresponsive range of the axis to <number>. This can be between 0
and 30000. Default: 5000
Option "StartKeysEnabled" "boolean"
Set to False to disable key event generation after startup. You can toggle key
event generation with the disable-keys button mapping. Default: enabled
Option "StartMouseEnabled" "boolean"
Set to False to disable mouse event generation after startup. You can toggle mouse
event generation with the disable-mouse button mapping. Default: enabled
DEFAULT CONFIGURATION
The default configuration is as follows:
Option "DebugLevel" "0"
Option "StartKeysEnabled" "True"
Option "StartMouseEnabled" "True"
Option "MapButton1" "button=1"
Option "MapButton2" "button=2"
Option "MapButton3" "button=3"
Option "MapButton4" "none"
...
Option "MapAxis1" "mode=relative axis=+1x deadzone=5000"
Option "MapAxis2" "mode=relative axis=+1y deadzone=5000"
Option "MapAxis3" "mode=relative axis=+1zx deadzone=5000"
Option "MapAxis4" "mode=relative axis=+1zy deadzone=5000"
Option "MapAxis5" "mode=accelerated axis=+1x deadzone=5000"
Option "MapAxis6" "mode=accelerated axis=+1y deadzone=5000"
Option "MapAxis7" "mode=none"
...
ACCELERATED AXIS CONFIGURATION
Accelerated mode should be selected, if the axis is a directional pad, which reports only
three states: negative, center, positive. It will result in smoothly accelerated movement
when the axis is deflected. An optional factor will affect the acceleration and final
speed.
This example will set up the axis as scrolling vertically inverted, with half the speed:
Option "MapAxis1" "mode=accelerated axis=-0.5zy"
This example maps four buttons to the four pointer directions, so you can use the buttons
like a d-pad. The movement will be accelerated with half the normal speed:
Option "MapButton1" "axis=+0.5x"
Option "MapButton2" "axis=-0.5x"
Option "MapButton3" "axis=+0.5y"
Option "MapButton4" "axis=-0.5y"
ABSOLUTE AXIS CONFIGURATION
In absolute axis mode, the position of the cursor will match the position of the
configured axis, but relative to the previous position of the cursor. You can specify the
range in which the cursor can move. The default range is the screen size.
In this example the first axis gets a range from left to the right of the screen. The
second axis gets a total range of 200 pixels, 100 to the top and 100 to the bottom:
Option "MapAxis1" "mode=absolute axis=x"
Option "MapAxis2" "mode=absolute axis=200y"
GENERATING KEY EVENTS
Providing a "key=<scancode>[,<scancode>[...]]" option will generate X Events with
specified scancodes. When the button/axis is released, the keys will be released in
opposite order.
If you want a certain KeySym, look up the matching scancode using xmodmap -pk. The
scancodes depend on the configured keyboard layout. You can also use unused keycodes and
map them to a KeySym of your choice using xmodmap(1).
You can specify up to 4 scancodes per joystick button/axis, which can be used for
modificators to get the KeySym you want.
Examples:
Option "MapButton1" "key=64,23"
will generate Alt_L+Tab when the button is pressed.
Option "MapButton1" "key=50,40"
will generate a Shift_L+d which will result in an uppercase d.
Option "MapButton1" "key=65"
will result in a space key.
Option "MapAxis1" "mode=relative keylow=113 keyhigh=114 axis=0.5key"
Option "MapAxis2" "mode=relative keylow=111 keyhigh=116"
Option "MapAxis3" "mode=accelerated keylow=113 keyhigh=114"
Option "MapAxis4" "mode=accelerated keylow=111 keyhigh=116"
will map the first and third axis to the arrow keys left and right and the second and
fourth axis to the arrow keys up and down.
The keys for the first two axes will be generated in an interval according to the value of
the axis. The autorepeat speed of the first axis will be half the speed of that of the
second axis. The keys for the third and fourth axis are generated once when the axis
moves out of the deadzone and when it moves back into the deadzone. X.Org will autorepeat
those keys according to current keyboard settings.
XI2 Events
If you only care about raw valuator events instead of using the joystick to control the
cursor, consider using the evdev(4) input driver. If you still use the joystick driver for
raw events, make sure to unmap all axes/buttons and add the valuator option to the axes:
Option "MapAxis1" "mode=none valuator"
Option "MapAxis2" "mode=none valuator"
Option "MapAxis3" "mode=none valuator"
Option "MapAxis4" "mode=none valuator"
...
Option "MapButton1" "button=1"
Option "MapButton2" "button=2"
Option "MapButton3" "button=3"
Option "MapButton4" "button=4"
Option "MapButton5" "button=5"
...
Remember, that valuators 0 and 1 are reserved for pointer movement, additional axes will
start with valuator 2.
You might also want to set the device "floating" to stop it from reporting core events:
Option "Floating" "true"
NOTES
It is not recommended to enable the joystick input driver by default unless explicitely
requested by the user.
Configuration through InputClass sections is recommended in X servers 1.8 and later. See
xorg.conf.d(5) for more details. An example xorg.conf.d(5) snipped is provided in
${sourcecode}/config/50-joystick-all.conf
Configuration through hal fdi files is recommended in X servers 1.5, 1.6 and 1.7. An
example hal policy file is still provided in ${sourcecode}/config/50-x11-input-
joystick.fdi to be placed in /etc/hal/fdi/policy.
SEE ALSO
Xorg(1), xorg.conf(5), xorg.conf.d(5), Xserver(1), X(7), xmodmap(1)
AUTHORS
Sascha Hlusiak (2007-2012),
Frederic Lepied (1995-1999)