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Commit 885f3fb9 authored by Nick Dyer's avatar Nick Dyer Committed by Dmitry Torokhov
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Input: atmel_mxt_ts - disable interrupt for 50ms after reset 



The CHG/interrupt line is momentarily set (approximately 100 ms) as an
input after power-up or reset for diagnostic purposes. This may cause
spurious interrupts, so disable interrupt handler during this period.

Signed-off-by: default avatarNick Dyer <nick.dyer@itdev.co.uk>
Signed-off-by: default avatarDmitry Torokhov <dmitry.torokhov@gmail.com>
parent 20447664

drivers/input/touchscreen/atmel_mxt_ts.c

+8 −1
Original line number Diff line number Diff line
@@ -1098,7 +1098,9 @@ static int mxt_soft_reset(struct mxt_data *data) 
	struct device *dev = &data->client->dev;

	int ret = 0;



	dev_info(dev, "Resetting chip\n");

	dev_info(dev, "Resetting device\n");



	disable_irq(data->irq);



	reinit_completion(&data->reset_completion);
@@ -1106,6 +1108,11 @@ static int mxt_soft_reset(struct mxt_data *data) 
	if (ret)

		return ret;



	/* Ignore CHG line for 100ms after reset */

	msleep(100);



	enable_irq(data->irq);



	ret = mxt_wait_for_completion(data, &data->reset_completion,

				      MXT_RESET_TIMEOUT);

	if (ret)