[PATCH v1 1/2] pinctrl: bcm: bcm2835: Switch to use ->add_pin_ranges()

[Andy Shevchenko <andriy.shevchenko@linux.intel.com>]

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 <andriy.shevchenko@linux.intel.com>
---
 drivers/pinctrl/bcm/pinctrl-bcm2835.c | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/drivers/pinctrl/bcm/pinctrl-bcm2835.c b/drivers/pinctrl/bcm/pinctrl-bcm2835.c
index 7857e612a100..fea1d1bcb389 100644
--- a/drivers/pinctrl/bcm/pinctrl-bcm2835.c
+++ b/drivers/pinctrl/bcm/pinctrl-bcm2835.c
@@ -358,16 +358,18 @@ 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 bcm2835_pinctrl *pc = gpiochip_get_data(gc);
+	struct device_node *np = dev_of_node(&gc->gpiodev->dev);
 	struct pinctrl_dev *pctldev = of_pinctrl_get(np);
 
-	of_node_put(np);
-
 	if (!pctldev)
 		return 0;
 
+	if (of_property_read_bool(np, "gpio-ranges"))
+		return 0;
+
 	gpiochip_add_pin_range(gc, pinctrl_dev_get_devname(pctldev), 0, 0,
 			       gc->ngpio);
 
@@ -388,7 +390,7 @@ 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 = {
@@ -405,7 +407,7 @@ 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,
-- 
2.39.0