Commit ebd66514 authored by Paul Cercueil's avatar Paul Cercueil Committed by Linus Walleij
Browse files

pinctrl: ingenic: Implement .get_direction for GPIO chips 



This allows to read from debugfs whether the GPIOs requested are set as
input or output.

Signed-off-by: default avatarPaul Cercueil <paul@crapouillou.net>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent e72394e2

drivers/pinctrl/pinctrl-ingenic.c

+16 −0
Original line number Diff line number Diff line
@@ -699,6 +699,21 @@ static inline bool ingenic_get_pin_config(struct ingenic_pinctrl *jzpc, 
	return val & BIT(idx);

}



static int ingenic_gpio_get_direction(struct gpio_chip *gc, unsigned int offset)

{

	struct ingenic_gpio_chip *jzgc = gpiochip_get_data(gc);

	struct ingenic_pinctrl *jzpc = jzgc->jzpc;

	unsigned int pin = gc->base + offset;



	if (jzpc->version >= ID_JZ4770)

		return ingenic_get_pin_config(jzpc, pin, JZ4770_GPIO_PAT1);



	if (ingenic_get_pin_config(jzpc, pin, JZ4740_GPIO_SELECT))

		return true;



	return !ingenic_get_pin_config(jzpc, pin, JZ4740_GPIO_DIR);

}



static const struct pinctrl_ops ingenic_pctlops = {

	.get_groups_count = pinctrl_generic_get_group_count,

	.get_group_name = pinctrl_generic_get_group_name,
@@ -1003,6 +1018,7 @@ static int __init ingenic_gpio_probe(struct ingenic_pinctrl *jzpc, 
	jzgc->gc.get = ingenic_gpio_get;

	jzgc->gc.direction_input = ingenic_gpio_direction_input;

	jzgc->gc.direction_output = ingenic_gpio_direction_output;

	jzgc->gc.get_direction = ingenic_gpio_get_direction;



	if (of_property_read_bool(node, "gpio-ranges")) {

		jzgc->gc.request = gpiochip_generic_request;

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