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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>
This commit is contained in:
Linus Walleij 2016-05-01 10:29:10 +02:00
parent 0c60de3f73
commit 3b711e0781
1 changed files with 12 additions and 0 deletions
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12
drivers/gpio/gpio-xgene.c
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@ -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;