diff mbox series

[v5,5/6] power: supply: power-supply-leds: Add charging_red_full_green trigger for RGB LED

Message ID 20240322033736.9344-6-hpa@redhat.com (mailing list archive)
State Handled Elsewhere, archived
Headers show
Series KTD2026 indicator LED for X86 Xiaomi Pad2 | expand

Commit Message

Kate Hsuan March 22, 2024, 3:37 a.m. UTC 
Add a charging_red_full_green LED trigger and the trigger is based on
led_mc_trigger_event() which can set an RGB LED when the trigger is
triggered. The LED will show red when the battery status is charging.
The LED will show green when the battery status is full.

Link: https://lore.kernel.org/linux-leds/f40a0b1a-ceac-e269-c2dd-0158c5b4a1ad@gmail.com/T/#t
Signed-off-by: Kate Hsuan <hpa@redhat.com>
---
 drivers/power/supply/power_supply_leds.c | 25 ++++++++++++++++++++++++
 include/linux/power_supply.h             |  2 ++
 2 files changed, 27 insertions(+)
diff mbox series

Patch

diff --git a/drivers/power/supply/power_supply_leds.c b/drivers/power/supply/power_supply_leds.c
index c7db29d5fcb8..bd9c8fec5870 100644
--- a/drivers/power/supply/power_supply_leds.c
+++ b/drivers/power/supply/power_supply_leds.c
@@ -22,6 +22,8 @@ 
 static void power_supply_update_bat_leds(struct power_supply *psy)
 {
 	union power_supply_propval status;
+	unsigned int intensity_green[3] = {255, 0, 0};
+	unsigned int intensity_red[3] = {0, 0, 255};
 
 	if (power_supply_get_property(psy, POWER_SUPPLY_PROP_STATUS, &status))
 		return;
@@ -36,12 +38,20 @@  static void power_supply_update_bat_leds(struct power_supply *psy)
 		/* Going from blink to LED on requires a LED_OFF event to stop blink */
 		led_trigger_event(psy->charging_blink_full_solid_trig, LED_OFF);
 		led_trigger_event(psy->charging_blink_full_solid_trig, LED_FULL);
+		led_mc_trigger_event(psy->charging_red_full_green_trig,
+				     intensity_green,
+				     3,
+				     LED_FULL);
 		break;
 	case POWER_SUPPLY_STATUS_CHARGING:
 		led_trigger_event(psy->charging_full_trig, LED_FULL);
 		led_trigger_event(psy->charging_trig, LED_FULL);
 		led_trigger_event(psy->full_trig, LED_OFF);
 		led_trigger_blink(psy->charging_blink_full_solid_trig, 0, 0);
+		led_mc_trigger_event(psy->charging_red_full_green_trig,
+				     intensity_red,
+				     3,
+				     LED_FULL);
 		break;
 	default:
 		led_trigger_event(psy->charging_full_trig, LED_OFF);
@@ -49,6 +59,10 @@  static void power_supply_update_bat_leds(struct power_supply *psy)
 		led_trigger_event(psy->full_trig, LED_OFF);
 		led_trigger_event(psy->charging_blink_full_solid_trig,
 			LED_OFF);
+		led_mc_trigger_event(psy->charging_red_full_green_trig,
+				     intensity_red,
+				     3,
+				     LED_OFF);
 		break;
 	}
 }
@@ -74,6 +88,11 @@  static int power_supply_create_bat_triggers(struct power_supply *psy)
 	if (!psy->charging_blink_full_solid_trig_name)
 		goto charging_blink_full_solid_failed;
 
+	psy->charging_red_full_green_trig_name = kasprintf(GFP_KERNEL,
+		"%s-charging-red-full-green", psy->desc->name);
+	if (!psy->charging_red_full_green_trig_name)
+		goto charging_red_full_green_failed;
+
 	led_trigger_register_simple(psy->charging_full_trig_name,
 				    &psy->charging_full_trig);
 	led_trigger_register_simple(psy->charging_trig_name,
@@ -82,9 +101,13 @@  static int power_supply_create_bat_triggers(struct power_supply *psy)
 				    &psy->full_trig);
 	led_trigger_register_simple(psy->charging_blink_full_solid_trig_name,
 				    &psy->charging_blink_full_solid_trig);
+	led_trigger_register_simple(psy->charging_red_full_green_trig_name,
+				    &psy->charging_red_full_green_trig);
 
 	return 0;
 
+charging_red_full_green_failed:
+	kfree(psy->charging_blink_full_solid_trig_name);
 charging_blink_full_solid_failed:
 	kfree(psy->full_trig_name);
 full_failed:
@@ -101,10 +124,12 @@  static void power_supply_remove_bat_triggers(struct power_supply *psy)
 	led_trigger_unregister_simple(psy->charging_trig);
 	led_trigger_unregister_simple(psy->full_trig);
 	led_trigger_unregister_simple(psy->charging_blink_full_solid_trig);
+	led_trigger_unregister_simple(psy->charging_red_full_green_trig);
 	kfree(psy->charging_blink_full_solid_trig_name);
 	kfree(psy->full_trig_name);
 	kfree(psy->charging_trig_name);
 	kfree(psy->charging_full_trig_name);
+	kfree(psy->charging_red_full_green_trig_name);
 }
 
 /* Generated power specific LEDs triggers. */
diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h
index c0992a77feea..1d7c0b43070f 100644
--- a/include/linux/power_supply.h
+++ b/include/linux/power_supply.h
@@ -318,6 +318,8 @@  struct power_supply {
 	char *online_trig_name;
 	struct led_trigger *charging_blink_full_solid_trig;
 	char *charging_blink_full_solid_trig_name;
+	struct led_trigger *charging_red_full_green_trig;
+	char *charging_red_full_green_trig_name;
 #endif
 };