From: Jason Gerecke jason.gerecke@wacom.com
commit b72fb1dcd2ea9d29417711cb302cef3006fa8d5a upstream.
Distance values reported by 2nd-gen Intuos tablets are on an inverted scale (0 == far, 63 == near). We need to change them over to a normal scale before reporting to userspace or else userspace drivers and applications can get confused.
Ref: https://github.com/linuxwacom/input-wacom/issues/98 Fixes: eda01dab53 ("HID: wacom: Add four new Intuos devices") Signed-off-by: Jason Gerecke jason.gerecke@wacom.com Cc: stable@vger.kernel.org # v4.4+ Signed-off-by: Jiri Kosina jkosina@suse.cz Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/hid/wacom_wac.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/drivers/hid/wacom_wac.c +++ b/drivers/hid/wacom_wac.c @@ -949,6 +949,8 @@ static int wacom_intuos_general(struct w y >>= 1; distance >>= 1; } + if (features->type == INTUOSHT2) + distance = features->distance_max - distance; input_report_abs(input, ABS_X, x); input_report_abs(input, ABS_Y, y); input_report_abs(input, ABS_DISTANCE, distance);