From 2d6180147e924b76b75b8b1e59bbf0c59c2a29d2 Mon Sep 17 00:00:00 2001
From: Marek Vasut <marex@denx.de>
Date: Tue, 23 May 2023 20:31:51 +0200
Subject: [PATCH] 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: Christoph Niedermaier <cniedermaier@dh-electronics.com>
Signed-off-by: Marek Vasut <marex@denx.de>
Link: https://lore.kernel.org/r/20230523183151.5460-1-marex@denx.de
Signed-off-by: Lee Jones <lee@kernel.org>
---
drivers/leds/leds-gpio.c | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff --git a/drivers/leds/leds-gpio.c b/drivers/leds/leds-gpio.c
index ce4e79939731d..7bfe40a6bfddf 100644
--- a/drivers/leds/leds-gpio.c
+++ b/drivers/leds/leds-gpio.c
@@ -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;
}
--
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