diff options
| author | Linus Walleij <linus.walleij@linaro.org> | 2016-05-01 11:29:10 +0300 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2016-05-01 11:31:30 +0300 |
| commit | 3b711e0781f34400326f911c15784e84deca84b6 (patch) | |
| tree | ca201e67dbbb3f8097fa54eec08999f3b03dbe1b /drivers/gpio | |
| parent | 0c60de3f73cddde6a83979c64f63cb1101f5326c (diff) | |
| download | linux-3b711e0781f34400326f911c15784e84deca84b6.tar.xz | |
gpio: xgene: implement .get_direction()
This implements the .get_direction() callback for the xgene GPIO
controller.
Cc: Duc Dang <dhdang@apm.com>
Cc: Feng Kan <fkan@apm.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/gpio-xgene.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/gpio/gpio-xgene.c b/drivers/gpio/gpio-xgene.c index 46faecd1f580..dc85dcd47d19 100644 --- a/drivers/gpio/gpio-xgene.c +++ b/drivers/gpio/gpio-xgene.c @@ -85,6 +85,17 @@ static void xgene_gpio_set(struct gpio_chip *gc, unsigned int offset, int val) spin_unlock_irqrestore(&chip->lock, flags); } +static int xgene_gpio_get_direction(struct gpio_chip *gc, unsigned int offset) +{ + struct xgene_gpio *chip = gpiochip_get_data(gc); + unsigned long bank_offset, bit_offset; + + bank_offset = GPIO_SET_DR_OFFSET + GPIO_BANK_OFFSET(offset); + bit_offset = GPIO_BIT_OFFSET(offset); + + return !!(ioread32(chip->base + bank_offset) & BIT(bit_offset)); +} + static int xgene_gpio_dir_in(struct gpio_chip *gc, unsigned int offset) { struct xgene_gpio *chip = gpiochip_get_data(gc); @@ -184,6 +195,7 @@ static int xgene_gpio_probe(struct platform_device *pdev) spin_lock_init(&gpio->lock); gpio->chip.parent = &pdev->dev; + gpio->chip.get_direction = xgene_gpio_get_direction; gpio->chip.direction_input = xgene_gpio_dir_in; gpio->chip.direction_output = xgene_gpio_dir_out; gpio->chip.get = xgene_gpio_get; |