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Commit 4fecc208 authored by Michael Hennerich's avatar Michael Hennerich Committed by Dmitry Torokhov
Browse files

Input: ad7879 - fix deficient device disable 



Input close or device disable should not interact with the exported
gpiolib functionality. However that's the case. __ad7879_disable()
clears the entire AD7879_REG_CTRL2, while it should just power down
the ADC and its reference.

Signed-off-by: default avatarMichael Hennerich <michael.hennerich@analog.com>
Signed-off-by: default avatarDmitry Torokhov <dtor@mail.ru>
parent 0a7a8fff

drivers/input/touchscreen/ad7879.c

+3 −1
Original line number Diff line number Diff line
@@ -249,12 +249,14 @@ static void __ad7879_enable(struct ad7879 *ts) 


static void __ad7879_disable(struct ad7879 *ts)

{

	u16 reg = (ts->cmd_crtl2 & ~AD7879_PM(-1)) |

		AD7879_PM(AD7879_PM_SHUTDOWN);

	disable_irq(ts->irq);



	if (del_timer_sync(&ts->timer))

		ad7879_ts_event_release(ts);



	ad7879_write(ts, AD7879_REG_CTRL2, AD7879_PM(AD7879_PM_SHUTDOWN));

	ad7879_write(ts, AD7879_REG_CTRL2, reg);

}