gpio: xgene: implement .get_direction() (3b711e07) · Commits · 戴 / test

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;