Hi Gregor, On Sat, Nov 11, 2017 at 6:34 AM, Gregor Riepl <onitake@xxxxxxxxx> wrote: > Hi, > > I was discussing jitter problems with a Silead touchscreen user today. > This is a general issue that should be solved on the hardware or firmware > level, but as we don't have a way to modify either for Silead controllers, I > was thinking that there might be a way to apply interpolation in the driver. > > input_set_abs_params has fuzz and flat parameters, perhaps these can be used > for that purpose? Is there a better way to do interpolation? > > Would it make sense to add corresponding jitter_x and jitter_y parameters to > include/linux/input/touchscreen.h ? The fuzz (smoothing the output coordinates) is done in input core and the touchscreen properties parsing code already handles touchscreen-fuzz-x and touchscreen-fuzz-y parameters. The only thing that is needed is to pass these parameters through DT or ACPI or static properties, based on particular device. Thanks. -- Dmitry -- 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
