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leds: trigger: Add led_mc_trigger_event() function

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Add a new led_mc_trigger_event() function for triggers which want to
change the color of a multi-color LED based on their trigger conditions.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Reviewed-by: Andy Shevchenko <andy@kernel.org>
Link: https://lore.kernel.org/r/20240531114124.45346-6-hdegoede@redhat.com
Signed-off-by: Lee Jones <lee@kernel.org>
This commit is contained in:
Hans de Goede 2024-05-31 13:41:23 +02:00 committed by Lee Jones
parent 5607ca92e6
commit 0921a57c91
2 changed files with 26 additions and 0 deletions
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20
drivers/leds/led-triggers.c
View File

@ -396,6 +396,26 @@ void led_trigger_event(struct led_trigger *trig,
}
EXPORT_SYMBOL_GPL(led_trigger_event);
void led_mc_trigger_event(struct led_trigger *trig,
unsigned int *intensity_value, unsigned int num_colors,
enum led_brightness brightness)
{
struct led_classdev *led_cdev;
if (!trig)
return;
rcu_read_lock();
list_for_each_entry_rcu(led_cdev, &trig->led_cdevs, trig_list) {
if (!(led_cdev->flags & LED_MULTI_COLOR))
continue;
led_mc_set_brightness(led_cdev, intensity_value, num_colors, brightness);
}
rcu_read_unlock();
}
EXPORT_SYMBOL_GPL(led_mc_trigger_event);
static void led_trigger_blink_setup(struct led_trigger *trig,
unsigned long delay_on,
unsigned long delay_off,

6
include/linux/leds.h
View File

@ -510,6 +510,9 @@ void led_trigger_register_simple(const char *name,
struct led_trigger **trigger);
void led_trigger_unregister_simple(struct led_trigger *trigger);
void led_trigger_event(struct led_trigger *trigger, enum led_brightness event);
void led_mc_trigger_event(struct led_trigger *trig,
unsigned int *intensity_value, unsigned int num_colors,
enum led_brightness brightness);
void led_trigger_blink(struct led_trigger *trigger, unsigned long delay_on,
unsigned long delay_off);
void led_trigger_blink_oneshot(struct led_trigger *trigger,
@ -552,6 +555,9 @@ static inline void led_trigger_register_simple(const char *name,
static inline void led_trigger_unregister_simple(struct led_trigger *trigger) {}
static inline void led_trigger_event(struct led_trigger *trigger,
enum led_brightness event) {}
static inline void led_mc_trigger_event(struct led_trigger *trig,
unsigned int *intensity_value, unsigned int num_colors,
enum led_brightness brightness) {}
static inline void led_trigger_blink(struct led_trigger *trigger,
unsigned long delay_on,
unsigned long delay_off) {}