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@xxxxxxxxxx>
---
This is a preparation patch for adding a new trigger to
drivers/power/supply/power_supply_leds.c which changes the color
of a RGB LED depending on if the battery is discharging (LED off)
charging (LED red) or full (LED green)
---
drivers/leds/led-triggers.c | 20 ++++++++++++++++++++
include/linux/leds.h | 6 ++++++
2 files changed, 26 insertions(+)
diff --git a/drivers/leds/led-triggers.c b/drivers/leds/led-triggers.c
index bd59a14a4a90..fcc4e7a7b12b 100644
--- a/drivers/leds/led-triggers.c
+++ b/drivers/leds/led-triggers.c
@@ -380,6 +380,26 @@ 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,
diff --git a/include/linux/leds.h b/include/linux/leds.h
index fed88eb9e170..5378e4cd03ff 100644
--- a/include/linux/leds.h
+++ b/include/linux/leds.h
@@ -526,6 +526,9 @@ 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,
@@ -562,6 +565,9 @@ 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) {}
--
2.43.2
