From e1641c9d174ee21b4a75a64ab6df9063cf60ac4a Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Fri, 1 Apr 2016 15:21:27 +0200 Subject: Revert "Revert "pinctrl: lantiq: Implement gpio_chip.to_irq"" This reverts commit 446f59acb70b70a425ea4105277a71eb615327cd. --- drivers/pinctrl/pinctrl-xway.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'drivers/pinctrl/pinctrl-xway.c') diff --git a/drivers/pinctrl/pinctrl-xway.c b/drivers/pinctrl/pinctrl-xway.c index 412c6b78140a..a13f2b6f6fc0 100644 --- a/drivers/pinctrl/pinctrl-xway.c +++ b/drivers/pinctrl/pinctrl-xway.c @@ -1573,6 +1573,22 @@ 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, @@ -1581,6 +1597,7 @@ 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, }; -- cgit v1.2.3-59-g8ed1b