Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 94e69207 authored by Jean-Jacques Hiblot's avatar Jean-Jacques Hiblot Committed by Linus Walleij
Browse files

pinctrl: at91: use gpiolib API to mark a GPIO used as an IRQ 



When an IRQ is started on a GPIO line, mark this GPIO as IRQ in
the gpiolib so we can keep track of the usage centrally.

Signed-off-by: default avatarJean-Jacques Hiblot <jjhiblot@traphandler.com>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent 2d0c386f

drivers/pinctrl/pinctrl-at91.c

+27 −0
Original line number Diff line number Diff line
@@ -1325,6 +1325,31 @@ static int alt_gpio_irq_type(struct irq_data *d, unsigned type) 
	return 0;

}



static unsigned int gpio_irq_startup(struct irq_data *d)

{

	struct at91_gpio_chip *at91_gpio = irq_data_get_irq_chip_data(d);

	unsigned	pin = d->hwirq;

	int ret;



	ret = gpio_lock_as_irq(&at91_gpio->chip, pin);

	if (ret) {

		dev_err(at91_gpio->chip.dev, "unable to lock pind %lu IRQ\n",

			d->hwirq);

		return ret;

	}

	gpio_irq_unmask(d);

	return 0;

}



static void gpio_irq_shutdown(struct irq_data *d)

{

	struct at91_gpio_chip *at91_gpio = irq_data_get_irq_chip_data(d);

	unsigned	pin = d->hwirq;



	gpio_irq_mask(d);

	gpio_unlock_as_irq(&at91_gpio->chip, pin);

}



#ifdef CONFIG_PM



static u32 wakeups[MAX_GPIO_BANKS];
@@ -1399,6 +1424,8 @@ void at91_pinctrl_gpio_resume(void) 


static struct irq_chip gpio_irqchip = {

	.name		= "GPIO",

	.irq_startup	= gpio_irq_startup,

	.irq_shutdown	= gpio_irq_shutdown,

	.irq_disable	= gpio_irq_mask,

	.irq_mask	= gpio_irq_mask,

	.irq_unmask	= gpio_irq_unmask,