linux/Documentation/devicetree/bindings/input/touchscreen/touchscreen.txt
Hans de Goede d16a33bb94 Input: touchscreen DT binding - add touchscreen-swapped-x-y property
On devices with a native portrait screen a landscape touchscreen /
digitizer may be used, this happens e.g. on ebook readers. In this case the
X and Y axis of the touchscreen are swapped compared to the screen.

Add a touchscreen-swapped-x-y property which drivers can use to see if they
need to swap the axis to make the touchscreen coordinates match the screen
coordinates.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-03-24 11:27:31 -07:00

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General Touchscreen Properties:
Optional properties for Touchscreens:
- touchscreen-size-x : horizontal resolution of touchscreen
(in pixels)
- touchscreen-size-y : vertical resolution of touchscreen
(in pixels)
- touchscreen-max-pressure : maximum reported pressure (arbitrary range
dependent on the controller)
- touchscreen-fuzz-x : horizontal noise value of the absolute input
device (in pixels)
- touchscreen-fuzz-y : vertical noise value of the absolute input
device (in pixels)
- touchscreen-fuzz-pressure : pressure noise value of the absolute input
device (arbitrary range dependent on the
controller)
- touchscreen-inverted-x : X axis is inverted (boolean)
- touchscreen-inverted-y : Y axis is inverted (boolean)
- touchscreen-swapped-x-y : X and Y axis are swapped (boolean)
Swapping is done after inverting the axis
Deprecated properties for Touchscreens:
- x-size : deprecated name for touchscreen-size-x
- y-size : deprecated name for touchscreen-size-y
- moving-threshold : deprecated name for a combination of
touchscreen-fuzz-x and touchscreen-fuzz-y
- contact-threshold : deprecated name for touchscreen-fuzz-pressure
- x-invert : deprecated name for touchscreen-inverted-x
- y-invert : deprecated name for touchscreen-inverted-y