leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

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

Browse Source 
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 <jjhiblot@traphandler.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Jean-Jacques Hiblot 2014-01-23 11:37:58 +01:00 committed by Linus Walleij
parent 2d0c386f13
commit 94e692071a
1 changed files with 27 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
drivers/pinctrl/pinctrl-at91.c
View File

@ -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,