On Tue, May 29, 2018 at 01:52:38PM +0200, Hans de Goede wrote: > Some touchscreens, depending on the firmware and/or the digitizer report > coordinates which never reach 0 along one or both of their axis. > > This has been seen for example on the Silead touchscreens on a Onda V891w > and a Point of View mobii TAB-P800w(v2.0). > > This commit adds support for touchscreen-min-x and touchscreen-min-y > device-properties which can be set to communicate the actual start > coordinates (rather then 0,0) to userspace. > > When set this fixes e.g. not being able to click things in the GNOME3 > top-bar on the 2 example tablets. > > Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx> > --- > .../input/touchscreen/touchscreen.txt | 6 ++-- Please split bindings to separate patch. > drivers/input/touchscreen/of_touchscreen.c | 36 ++++++++++++++----- > 2 files changed, 32 insertions(+), 10 deletions(-) > > diff --git a/Documentation/devicetree/bindings/input/touchscreen/touchscreen.txt b/Documentation/devicetree/bindings/input/touchscreen/touchscreen.txt > index 537643e86f61..8aff9551259f 100644 > --- a/Documentation/devicetree/bindings/input/touchscreen/touchscreen.txt > +++ b/Documentation/devicetree/bindings/input/touchscreen/touchscreen.txt > @@ -1,10 +1,12 @@ > General Touchscreen Properties: > > Optional properties for Touchscreens: > + - touchscreen-min-x : minimum x coordinate reported (0 if not set) > + - touchscreen-min-y : minimum y coordinate reported (0 if not set) Maybe a min-max range would be better if size (in pixels) is also needed? > - touchscreen-size-x : horizontal resolution of touchscreen > - (in pixels) > + (maximum x coordinate reported + 1) This is unrelated or at least not explained in the commit msg. I agree this probably makes sense as units are often not pixels unless the hw/fw is doing some scaling itself. > - touchscreen-size-y : vertical resolution of touchscreen > - (in pixels) > + (maximum y coordinate reported + 1) > - touchscreen-max-pressure : maximum reported pressure (arbitrary range > dependent on the controller) > - touchscreen-fuzz-x : horizontal noise value of the absolute input -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
