mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-24 13:13:57 +08:00
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: John Crispin <blogic@openwrt.org> Signed-off-by: Martin Schiller <mschiller@tdt.de> [Switched ->dev to ->parent] Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
parent
b4818afeac
commit
3e640743fe
@ -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,
|
||||
};
|
||||
|
||||
|
Loading…
Reference in New Issue
Block a user