From 94e692071a51594c5117055676fef3ecbab21b30 Mon Sep 17 00:00:00 2001 From: Jean-Jacques Hiblot Date: Thu, 23 Jan 2014 11:37:58 +0100 Subject: 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: Jean-Jacques Hiblot Signed-off-by: Linus Walleij --- drivers/pinctrl/pinctrl-at91.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) (limited to 'drivers') diff --git a/drivers/pinctrl/pinctrl-at91.c b/drivers/pinctrl/pinctrl-at91.c index d990e33d8aa7..71247f47fcec 100644 --- a/drivers/pinctrl/pinctrl-at91.c +++ b/drivers/pinctrl/pinctrl-at91.c @@ -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, -- cgit v1.2.3-55-g7522