pinctrl: lynxpoint: Implement intel_gpio_get_direction callback (54d371cf) · Commits · 戴 / test

Allows querying GPIO direction from the pad config register. If the pad is not in GPIO mode, return an error. Reviewed-by:

drivers/pinctrl/intel/pinctrl-lynxpoint.c

+11 −0

Original line number	Diff line number	Diff line
		@@ -197,6 +197,16 @@ static int lp_gpio_direction_output(struct gpio_chip *chip, unsigned int offset,
		return 0;
		}

		static int lp_gpio_get_direction(struct gpio_chip *chip, unsigned int offset)
		{
		void __iomem *reg = lp_gpio_reg(chip, offset, LP_CONFIG1);

		if (ioread32(reg) & DIR_BIT)
		return GPIO_LINE_DIRECTION_IN;

		return GPIO_LINE_DIRECTION_OUT;
		}

		static void lp_gpio_irq_handler(struct irq_desc *desc)
		{
		struct irq_data *data = irq_desc_get_irq_data(desc);
		@@ -391,6 +401,7 @@ static int lp_gpio_probe(struct platform_device *pdev)
		gc->direction_output = lp_gpio_direction_output;
		gc->get = lp_gpio_get;
		gc->set = lp_gpio_set;
		gc->get_direction = lp_gpio_get_direction;
		gc->base = -1;
		gc->ngpio = LP_NUM_GPIO;
		gc->can_sleep = false;