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Commit 3e640743 authored by John Crispin's avatar John Crispin Committed by Linus Walleij
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pinctrl: lantiq: Implement gpio_chip.to_irq 



Some drivers require a way to translate GPIO pins to their IRQ numbers.

This patch adds the .to_irq() gpiolib callback to the pinctrl-xway
driver, which returns an IRQ mapping for a given GPIO pin.

Signed-off-by: default avatarJohn Crispin <blogic@openwrt.org>
Signed-off-by: default avatarMartin Schiller <mschiller@tdt.de>
[Switched ->dev to ->parent]
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent b4818afe

drivers/pinctrl/pinctrl-xway.c

+17 −0
Original line number Diff line number Diff line
@@ -682,6 +682,22 @@ static int xway_gpio_dir_out(struct gpio_chip *chip, unsigned int pin, int val) 
	return 0;

}



/*

 * gpiolib gpiod_to_irq callback function.

 * Returns the mapped IRQ (external interrupt) number for a given GPIO pin.

 */

static int xway_gpio_to_irq(struct gpio_chip *chip, unsigned offset)

{

	struct ltq_pinmux_info *info = dev_get_drvdata(chip->parent);

	int i;



	for (i = 0; i < info->num_exin; i++)

		if (info->exin[i] == offset)

			return ltq_eiu_get_irq(i);



	return -1;

}



static struct gpio_chip xway_chip = {

	.label = "gpio-xway",

	.direction_input = xway_gpio_dir_in,
@@ -690,6 +706,7 @@ static struct gpio_chip xway_chip = { 
	.set = xway_gpio_set,

	.request = gpiochip_generic_request,

	.free = gpiochip_generic_free,

	.to_irq = xway_gpio_to_irq,

	.base = -1,

};