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

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

[Andy Shevchenko]

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


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[PATCH v1 2/2] gpiolib: of: Remove no more used ->of_gpio_ranges_fallback()

[Andy Shevchenko]

Since the only one and last user of the ->of_gpio_ranges_fallback()
gone, remove the callback completely. New platforms must use the
gpio-ranges property.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/gpio/gpiolib-of.c   |  5 -----
 include/linux/gpio/driver.h | 11 -----------
 2 files changed, 16 deletions(-)

diff --git a/drivers/gpio/gpiolib-of.c b/drivers/gpio/gpiolib-of.c
index 72d8a3da31e3..266352b1a966 100644
--- a/drivers/gpio/gpiolib-of.c
+++ b/drivers/gpio/gpiolib-of.c
@@ -980,11 +980,6 @@ static int of_gpiochip_add_pin_range(struct gpio_chip *chip)
 	if (!np)
 		return 0;
 
-	if (!of_property_read_bool(np, "gpio-ranges") &&
-	    chip->of_gpio_ranges_fallback) {
-		return chip->of_gpio_ranges_fallback(chip, np);
-	}
-
 	group_names = of_find_property(np, group_names_propname, NULL);
 
 	for (;; index++) {
diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h
index ddc7a14a274f..29c283919f8a 100644
--- a/include/linux/gpio/driver.h
+++ b/include/linux/gpio/driver.h
@@ -522,17 +522,6 @@ struct gpio_chip {
 	int (*of_xlate)(struct gpio_chip *gc,
 			const struct of_phandle_args *gpiospec, u32 *flags);
 
-	/**
-	 * @of_gpio_ranges_fallback:
-	 *
-	 * Optional hook for the case that no gpio-ranges property is defined
-	 * within the device tree node "np" (usually DT before introduction
-	 * of gpio-ranges). So this callback is helpful to provide the
-	 * necessary backward compatibility for the pin ranges.
-	 */
-	int (*of_gpio_ranges_fallback)(struct gpio_chip *gc,
-				       struct device_node *np);
-
 #endif /* CONFIG_OF_GPIO */
 };
 
-- 
2.39.0


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Re: [PATCH v1 2/2] gpiolib: of: Remove no more used ->of_gpio_ranges_fallback()

[Bartosz Golaszewski]

On Thu, Jan 12, 2023 at 5:38 PM Andy Shevchenko
<andriy.shevchenko@linux.intel.com> wrote:
>
> Since the only one and last user of the ->of_gpio_ranges_fallback()
> gone, remove the callback completely. New platforms must use the
> gpio-ranges property.
>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> ---

Acked-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

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