Commit 3b711e07 authored by Linus Walleij's avatar Linus Walleij
Browse files

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: default avatarLinus Walleij <linus.walleij@linaro.org>
parent 0c60de3f

drivers/gpio/gpio-xgene.c

+12 −0
Original line number Diff line number Diff line
@@ -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;