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Commit 02d31765 authored by Jacek Anaszewski's avatar Jacek Anaszewski
Browse files

led: triggers: Add LED_INIT_DEFAULT_TRIGGER flag 



Add the flag LED_INIT_DEFAULT_TRIGGER for indicating that trigger
being set is a default trigger for the LED class device, and
thus it should be initialized with settings provided in the fwnode.

Set the flag in the led_trigger_set_default(). It is expected to be
cleared in the activate() op of a trigger after trigger fwnode
initialization data is parsed and applied. This should happen only
once after LED class device registration, to allow leaving triggers
in the idle state on re-apply and let the users apply their own
settings without interference from the default ones.

Signed-off-by: default avatarJacek Anaszewski <jacek.anaszewski@gmail.com>
Acked-by: default avatarPavel Machek <pavel@ucw.cz>
Signed-off-by: default avatarKrzysztof Kozlowski <krzk@kernel.org>
parent c4f7bd4a

drivers/leds/led-triggers.c

+1 −0
Original line number Diff line number Diff line
@@ -201,6 +201,7 @@ void led_trigger_set_default(struct led_classdev *led_cdev) 
	down_write(&led_cdev->trigger_lock);

	list_for_each_entry(trig, &trigger_list, next_trig) {

		if (!strcmp(led_cdev->default_trigger, trig->name)) {

			led_cdev->flags |= LED_INIT_DEFAULT_TRIGGER;

			led_trigger_set(led_cdev, trig);

			break;

		}

include/linux/leds.h

+1 −0
Original line number Diff line number Diff line
@@ -51,6 +51,7 @@ struct led_classdev { 
#define LED_PANIC_INDICATOR	BIT(20)

#define LED_BRIGHT_HW_CHANGED	BIT(21)

#define LED_RETAIN_AT_SHUTDOWN	BIT(22)

#define LED_INIT_DEFAULT_TRIGGER BIT(23)



	/* set_brightness_work / blink_timer flags, atomic, private. */

	unsigned long		work_flags;