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

[Kate Hsuan]

Hi

On Sat, Mar 30, 2024 at 12:24 AM Sebastian Reichel <sre@xxxxxxxxxx> wrote:
>
> 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

Sounds good.
I'll change the color for them.

Thank you

>
> 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
> >
> >



-- 
BR,
Kate