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Commit 1d02ad43 authored by Michael Hennerich's avatar Michael Hennerich Committed by Dmitry Torokhov
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Input: ad7877 - filter events where pressure is beyond the maximum 



Suppress events where pressure > pressure_max.
These events come typically along with inaccurate X and Y samples.

Signed-off-by: default avatarMichael Hennerich <michael.hennerich@analog.com>
Signed-off-by: default avatarDmitry Torokhov <dtor@mail.ru>
parent 47026b25

drivers/input/touchscreen/ad7877.c

+7 −0
Original line number Diff line number Diff line
@@ -360,6 +360,13 @@ static int ad7877_rx(struct ad7877 *ts) 
		Rt /= z1;

		Rt = (Rt + 2047) >> 12;



		/*

		 * Sample found inconsistent, pressure is beyond

		 * the maximum. Don't report it to user space.

		 */

		if (Rt > ts->pressure_max)

			return -EINVAL;



		if (!timer_pending(&ts->timer))

			input_report_key(input_dev, BTN_TOUCH, 1);