diff options
| author | Jean-Jacques Hiblot <jjhiblot@traphandler.com> | 2014-01-23 11:37:58 +0100 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2014-02-10 10:13:08 +0100 |
| commit | 94e692071a51594c5117055676fef3ecbab21b30 (patch) | |
| tree | d00bf56a0fe1b8b1ec4040a3e44828cd6df7615e /drivers/pinctrl/pinctrl-at91.c | |
| parent | pinctrl: sh-pfc: r8a7791: Add QSPI pin groups (diff) | |
| download | linux-94e692071a51594c5117055676fef3ecbab21b30.tar.xz linux-94e692071a51594c5117055676fef3ecbab21b30.zip | |
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 <jjhiblot@traphandler.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl/pinctrl-at91.c')
| -rw-r--r-- | drivers/pinctrl/pinctrl-at91.c | 27 |
1 files changed, 27 insertions, 0 deletions
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, |