On Thu, Oct 19, 2017 at 2:17 AM, Hans de Goede <hdegoede@xxxxxxxxxx> wrote: > On some x86 tablets with a silead touchscreen the windows logo on the > front is a capacitive home button. Touching this button results in a touch > with bits 12-15 of the Y coordinates set, while normally only the lower 12 > are used. > > Detect this and report a KEY_LEFTMETA press when this happens. Note for > now we only respond to the Y coordinate bits 12-15 containing 0x01, on some > tablets *without* a capacative button I've noticed these bits containing capacitive > 0x04 when crossing the edges of the screen. > > Cc: Rob Herring <robh+dt@xxxxxxxxxx> > Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx> > --- > Changes in v2: > -Only enable support for the home-button if a "silead,home-button" > boolean device-property is set on the device > > Changes in v3: > -Document the new silead,home-button property in: > Documentation/devicetree/bindings/input/touchscreen/goodix.txt > --- > .../bindings/input/touchscreen/silead_gsl1680.txt | 2 + Acked-by: Rob Herring <robh@xxxxxxxxxx> > drivers/input/touchscreen/silead.c | 46 ++++++++++++++++------ > 2 files changed, 37 insertions(+), 11 deletions(-)
