From: Michael Hennerich <michael.hennerich@xxxxxxxxxx> Suppress events where pressure > pressure_max. These events come typically along with inaccurate X and Y samples. Signed-off-by: Michael Hennerich <michael.hennerich@xxxxxxxxxx> --- drivers/input/touchscreen/ad7877.c | 7 +++++++ 1 files changed, 7 insertions(+), 0 deletions(-) diff --git a/drivers/input/touchscreen/ad7877.c b/drivers/input/touchscreen/ad7877.c index 96c0a0d..e6917db 100644 --- a/drivers/input/touchscreen/ad7877.c +++ b/drivers/input/touchscreen/ad7877.c @@ -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); -- 1.6.0.2 -- 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
