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leds: gpio: Configure per-LED pin control

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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>
This commit is contained in:
Marek Vasut 2023-05-23 20:31:51 +02:00 committed by Lee Jones
parent bf4a35e920
commit 2d6180147e
1 changed files with 18 additions and 0 deletions
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18
drivers/leds/leds-gpio.c
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@ -13,6 +13,7 @@
#include <linux/leds.h> #include <linux/leds.h>
#include <linux/module.h> #include <linux/module.h>
#include <linux/of.h> #include <linux/of.h>
#include <linux/pinctrl/consumer.h>
#include <linux/platform_device.h> #include <linux/platform_device.h>
#include <linux/property.h> #include <linux/property.h>
#include <linux/slab.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 fwnode_handle *fwnode, gpio_blink_set_t blink_set)
{ {
struct led_init_data init_data = {}; struct led_init_data init_data = {};
struct pinctrl *pinctrl;
int ret, state; int ret, state;
led_dat->cdev.default_trigger = template->default_trigger; led_dat->cdev.default_trigger = template->default_trigger;
@ -119,6 +121,22 @@ static int create_gpio_led(const struct gpio_led *template,
&init_data); &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; return ret;
} }