Commit 2d618014 authored by Marek Vasut's avatar Marek Vasut Committed by Lee Jones
Browse files

leds: gpio: Configure per-LED pin control 



Each gpio-leds DT node DT subnode can have a pinctrl property assigned
to it, parse the DT subnode pinctrl properties and configure each pin
accordingly.

Tested-by: default avatarChristoph Niedermaier <cniedermaier@dh-electronics.com>
Signed-off-by: default avatarMarek Vasut <marex@denx.de>
Link: https://lore.kernel.org/r/20230523183151.5460-1-marex@denx.de


Signed-off-by: default avatarLee Jones <lee@kernel.org>
parent bf4a35e9

drivers/leds/leds-gpio.c

+18 −0
Original line number Diff line number Diff line
@@ -13,6 +13,7 @@ 
#include <linux/leds.h>

#include <linux/module.h>

#include <linux/of.h>

#include <linux/pinctrl/consumer.h>

#include <linux/platform_device.h>

#include <linux/property.h>

#include <linux/slab.h>
@@ -77,6 +78,7 @@ static int create_gpio_led(const struct gpio_led *template, 
	struct fwnode_handle *fwnode, gpio_blink_set_t blink_set)

{

	struct led_init_data init_data = {};

	struct pinctrl *pinctrl;

	int ret, state;



	led_dat->cdev.default_trigger = template->default_trigger;
@@ -119,6 +121,22 @@ static int create_gpio_led(const struct gpio_led *template, 
						     &init_data);

	}



	if (ret)

		return ret;



	pinctrl = devm_pinctrl_get_select_default(led_dat->cdev.dev);

	if (IS_ERR(pinctrl)) {

		ret = PTR_ERR(pinctrl);

		if (ret != -ENODEV) {

			dev_warn(led_dat->cdev.dev,

				 "Failed to select %pOF pinctrl: %d\n",

				 to_of_node(fwnode), ret);

		} else {

			/* pinctrl-%d not present, not an error */

			ret = 0;

		}

	}



	return ret;

}