Hello Kate, On Sun, Mar 24, 2024 at 11:01:06PM +0800, Kate Hsuan wrote: > 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@xxxxxxxxx/T/#t > Signed-off-by: Kate Hsuan <hpa@xxxxxxxxxx> > --- Have you considered using orange instead of red? Using orange as charging indicator seems to be more common nowadays and allows green = battery full orange = battery charging red = battery empty / battery dead / error Greetings, -- Sebastian > drivers/power/supply/power_supply_leds.c | 25 ++++++++++++++++++++++++ > include/linux/power_supply.h | 2 ++ > 2 files changed, 27 insertions(+) > > 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 > }; > > -- > 2.44.0 > >
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