From: Pavel Machek <pavel@ucw.cz>
Date: Mon, 23 Nov 2009 16:17:38 +0000 (-0800)
Subject: Input: ads7846 - fix pressure reporting
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=30ad7ba0a55ef394c6956c886ddd058173153506;p=openwrt%2Fstaging%2Fblogic.git

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 09c810999b92..033233d2b5eb 100644
--- 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