• Thierry Reding's avatar
    Input: tsc2007 - add max_rt parameter to platform data · 84005eb5
    Thierry Reding authored
    Finger touch events or very quick stylus events on low-quality panels
    can cause the tsc2007 to read bogus values. Looking at oscilloscope
    snapshots, this seems to be caused by the touch event disappearing
    during the measurements. These bogus values result in misclicks, where
    the X and Y values deviate from the real position.
    
    Most of these misclicks can be filtered out by setting a low enough
    threshold for the maximum resistance (which is loosely the inverse of
    the pressure) allowed to consider a set of values valid. Since this
    behaviour is largely dependent on the type and quality of the panel,
    this commit introduces the max_rt parameter. The default value is kept
    at MAX_12BIT.
    Signed-off-by: default avatarThierry Reding <thierry.reding@avionic-design.de>
    Signed-off-by: default avatarDmitry Torokhov <dtor@mail.ru>
    84005eb5
tsc2007.c 9.57 KB