pinctrl: bcm2835: Switch to use ->add_pin_ranges()

Yeah, while the ->add_pin_ranges() shouldn't be used by DT drivers,
this one requires it to support quite old firmware descriptions that
do not have gpio-ranges property.

The change allows to clean up GPIO library from OF specifics.
There is no functional change intended.

Signed-off-by: Andy Shevchenko <[email protected]>
Tested-by: Stefan Wahren <[email protected]>
Tested-by: Florian Fainelli <[email protected]>
Reviewed-by: Florian Fainelli <[email protected]>
Acked-by: Bartosz Golaszewski <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Linus Walleij <[email protected]>

Author: andy-shev

drivers/pinctrl/bcm/pinctrl-bcm2835.c

@@ -358,9 +358,9 @@ static int bcm2835_gpio_direction_output(struct gpio_chip *chip,
 	return 0;
 }
 
-static int bcm2835_of_gpio_ranges_fallback(struct gpio_chip *gc,
-					   struct device_node *np)
+static int bcm2835_add_pin_ranges_fallback(struct gpio_chip *gc)
 {
+	struct device_node *np = dev_of_node(gc->parent);
 	struct pinctrl_dev *pctldev = of_pinctrl_get(np);
 
 	if (!pctldev)
@@ -386,7 +386,7 @@ static const struct gpio_chip bcm2835_gpio_chip = {
 	.base = -1,
 	.ngpio = BCM2835_NUM_GPIOS,
 	.can_sleep = false,
-	.of_gpio_ranges_fallback = bcm2835_of_gpio_ranges_fallback,
+	.add_pin_ranges = bcm2835_add_pin_ranges_fallback,
 };
 
 static const struct gpio_chip bcm2711_gpio_chip = {
@@ -403,7 +403,7 @@ static const struct gpio_chip bcm2711_gpio_chip = {
 	.base = -1,
 	.ngpio = BCM2711_NUM_GPIOS,
 	.can_sleep = false,
-	.of_gpio_ranges_fallback = bcm2835_of_gpio_ranges_fallback,
+	.add_pin_ranges = bcm2835_add_pin_ranges_fallback,
 };
 
 static void bcm2835_gpio_irq_handle_bank(struct bcm2835_pinctrl *pc,