gpio: pl061: hook request if gpio-ranges avaiable (27f9fec5) · Commits · 戴 / test

drivers/gpio/gpio-pl061.c

+14 −6

Original line number	Diff line number	Diff line
		@@ -52,27 +52,33 @@ struct pl061_gpio {

		void __iomem *base;
		struct gpio_chip gc;
		bool uses_pinctrl;

		#ifdef CONFIG_PM
		struct pl061_context_save_regs csave_regs;
		#endif
		};

		static int pl061_gpio_request(struct gpio_chip *chip, unsigned offset)
		static int pl061_gpio_request(struct gpio_chip *gc, unsigned offset)
		{
		/*
		* Map back to global GPIO space and request muxing, the direction
		* parameter does not matter for this controller.
		*/
		int gpio = chip->base + offset;
		struct pl061_gpio *chip = container_of(gc, struct pl061_gpio, gc);
		int gpio = gc->base + offset;

		if (chip->uses_pinctrl)
		return pinctrl_request_gpio(gpio);
		return 0;
		}

		static void pl061_gpio_free(struct gpio_chip *chip, unsigned offset)
		static void pl061_gpio_free(struct gpio_chip *gc, unsigned offset)
		{
		int gpio = chip->base + offset;
		struct pl061_gpio *chip = container_of(gc, struct pl061_gpio, gc);
		int gpio = gc->base + offset;

		if (chip->uses_pinctrl)
		pinctrl_free_gpio(gpio);
		}

		@@ -263,6 +269,8 @@ static int pl061_probe(struct amba_device adev, const struct amba_id id)
		return PTR_ERR(chip->base);

		spin_lock_init(&chip->lock);
		if (of_property_read_bool(dev->of_node, "gpio-ranges"))
		chip->uses_pinctrl = true;

		chip->gc.request = pl061_gpio_request;
		chip->gc.free = pl061_gpio_free;