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Commit 8fb81d20 authored by Oreste Salerno's avatar Oreste Salerno Committed by Dmitry Torokhov
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Input: cyttsp - perform hard reset of the chip during probe 



Since we removed support for calling an init() callback from
the platform data, introduce a function which initializes
the chip by performing a hard reset, using the reset gpio
defined in the device properties.

Signed-off-by: default avatarOreste Salerno <oreste.salerno@tomtom.com>
Signed-off-by: default avatarDmitry Torokhov <dmitry.torokhov@gmail.com>
parent 707b61bb

drivers/input/touchscreen/cyttsp_core.c

+12 −0
Original line number Diff line number Diff line
@@ -240,6 +240,16 @@ static int cyttsp_set_sysinfo_regs(struct cyttsp *ts) 
	return retval;

}



static void cyttsp_hard_reset(struct cyttsp *ts)

{

	if (ts->reset_gpio) {

		gpiod_set_value_cansleep(ts->reset_gpio, 1);

		msleep(CY_DELAY_DFLT);

		gpiod_set_value_cansleep(ts->reset_gpio, 0);

		msleep(CY_DELAY_DFLT);

	}

}



static int cyttsp_soft_reset(struct cyttsp *ts)

{

	unsigned long timeout;
@@ -666,6 +676,8 @@ struct cyttsp *cyttsp_probe(const struct cyttsp_bus_ops *bus_ops, 


	disable_irq(ts->irq);



	cyttsp_hard_reset(ts);



	error = cyttsp_power_on(ts);

	if (error)

		return ERR_PTR(error);