gpio: pl061: use the generic request/free implementations

Instead of storing in the chip data whether the chip uses pinctrl and
conditionally call pinctrl_{request,free}_gpio, just don't populate
request/free in that case.

This makes the implementations trivial and the same as the generic
implementations, thus we can just use them.

Signed-off-by: Jonas Gorski <jogo@openwrt.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/gpio/gpio-pl061.c

@@ -52,36 +52,12 @@ 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 *gc, unsigned offset)
-{
-	/*
-	 * Map back to global GPIO space and request muxing, the direction
-	 * parameter does not matter for this controller.
-	 */
-	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 *gc, unsigned 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);
-}
-
 static int pl061_direction_input(struct gpio_chip *gc, unsigned offset)
 {
 	struct pl061_gpio *chip = container_of(gc, struct pl061_gpio, gc);
@@ -329,11 +305,11 @@ 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;
+	if (of_property_read_bool(dev->of_node, "gpio-ranges")) {
+		chip->gc.request = gpiochip_generic_request;
+		chip->gc.free = gpiochip_generic_free;
+	}
 
-	chip->gc.request = pl061_gpio_request;
-	chip->gc.free = pl061_gpio_free;
 	chip->gc.direction_input = pl061_direction_input;
 	chip->gc.direction_output = pl061_direction_output;
 	chip->gc.get = pl061_get_value;