| Message ID | 1449223544-3527-1-git-send-email-mschiller@tdt.de |
|---|---|
| State | New |
| Headers | show |
On Fri, Dec 4, 2015 at 11:05 AM, Martin Schiller <mschiller@tdt.de> wrote: > From: John Crispin <blogic@openwrt.org> > > 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> > --- > Changes in v4: > - Added commit message + comment Patch applied. I had to apply this to the GPIO tree as I am working with some GPIO refactorings. Yours, Linus Walleij -- To unsubscribe from this list: send the line "unsubscribe linux-gpio" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/pinctrl/pinctrl-xway.c b/drivers/pinctrl/pinctrl-xway.c index b78baaa..66f0048 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->dev); + 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, };