input: atmel_ptc: set PTC line as input

When requesting GPIOs to reserve the PTC line, set them as
input to be sure to get the right direction.

TODO: conversion to gpio descriptors

Signed-off-by: Ludovic Desroches <ludovic.desroches@microchip.com>

Author: ldesroches

drivers/input/misc/atmel_ptc.c

@@ -518,7 +518,7 @@ static int atmel_ptc_request_pins(struct atmel_ptc *ptc)
 			if (ptc->x_lines_requested[j])
 				continue;
 
-			if (gpio_request(ptc->pins->x_lines[j].id, ptc->pins->x_lines[j].name)) {
+			if (gpio_request_one(ptc->pins->x_lines[j].id, GPIOF_DIR_IN, ptc->pins->x_lines[j].name)) {
 				dev_err(ptc->dev, "Can't get %s\n", ptc->pins->x_lines[j].name);
 				return -ENXIO;
 			}
@@ -529,7 +529,7 @@ static int atmel_ptc_request_pins(struct atmel_ptc *ptc)
 			if (ptc->y_lines_requested[j])
 				continue;
 
-			if (gpio_request(ptc->pins->y_lines[j].id, ptc->pins->y_lines[j].name)) {
+			if (gpio_request_one(ptc->pins->y_lines[j].id, GPIOF_DIR_IN, ptc->pins->y_lines[j].name)) {
 				dev_err(ptc->dev, "Can't get %s\n", ptc->pins->y_lines[j].name);
 				return -ENXIO;
 			}