Input: ads7846 - fix pressure reporting

On Zaurus, hx4700 and others pressure is reported inverted -- the lighter
the pressure, the bigger numerical value.

Signed-off-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

diff --git a/drivers/input/touchscreen/ads7846.c b/drivers/input/touchscreen/ads7846.c
index 09c8109..033233d 100644 (file)
--- a/drivers/input/touchscreen/ads7846.c
+++ b/drivers/input/touchscreen/ads7846.c
@@ -608,7 +608,7 @@ static void ads7846_rx(void *ads)
 
                input_report_abs(input, ABS_X, x);
                input_report_abs(input, ABS_Y, y);
-               input_report_abs(input, ABS_PRESSURE, Rt);
+               input_report_abs(input, ABS_PRESSURE, ts->pressure_max - Rt);
 
                input_sync(input);
 #ifdef VERBOSE