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Input: edt-ft5x06 - ignore touchdown events 

The chip may report invalid coordinates on touchdown events, so don't
report the initial touchdown event.

Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de>
Acked-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Lothar Waßmann 2014-03-28 09:28:17 -07:00 committed by Dmitry Torokhov
parent c080846749
commit ee3e946e31
1 changed files with 4 additions and 0 deletions
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4
drivers/input/touchscreen/edt-ft5x06.c
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@ -176,6 +176,10 @@ static irqreturn_t edt_ft5x06_ts_isr(int irq, void *dev_id)
if (type == TOUCH_EVENT_RESERVED)
continue;
/* ignore TOUCH_DOWN events, might have bogus coordinates */
if (type == TOUCH_EVENT_DOWN)
continue;
x = ((buf[0] << 8) | buf[1]) & 0x0fff;
y = ((buf[2] << 8) | buf[3]) & 0x0fff;
id = (buf[2] >> 4) & 0x0f;