* Sebastian Reichel <[email protected]> [140425 16:56]: > Add common DT binding documentation for touchscreen devices and > implement input_parse_touchscreen_of_params, which parses the common > properties and configures the input device accordingly. > > The method currently does not interpret the axis inversion properties, > since there is no matching flag in the generic linux input device. > > Signed-off-by: Sebastian Reichel <[email protected]> > --- > .../bindings/input/touchscreen/touchscreen.txt | 27 +++++++++++++++++ > drivers/input/input.c | 34 > ++++++++++++++++++++++ > include/linux/input.h | 8 +++++ > 3 files changed, 69 insertions(+) > create mode 100644 > Documentation/devicetree/bindings/input/touchscreen/touchscreen.txt > > diff --git > a/Documentation/devicetree/bindings/input/touchscreen/touchscreen.txt > b/Documentation/devicetree/bindings/input/touchscreen/touchscreen.txt > new file mode 100644 > index 0000000..d8e0616 > --- /dev/null > +++ b/Documentation/devicetree/bindings/input/touchscreen/touchscreen.txt > @@ -0,0 +1,27 @@ > +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)
We probably also need something to swap x and y depending on the display orientation in addition to the touchscreen-inverted-x and y. Just swapping x and y is not enough depending if we rotate by 270 degrees instead of 90 degrees. Naturally that part can be added later. Regards, That -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
