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alistair23-linux
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power_supply: Add new LED trigger charging-blink-solid-full 

Add new trigger to power_supply LEDs. It will blink when battery is
charging, and stay solid when battery is charged. It's usefull to
indicate battery state when there's only one LED available.

Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
hifive-unleashed-5.1
Vasily Khoruzhick 2011-01-07 18:28:17 +02:00 committed by Anton Vorontsov
parent 0b9536c957
commit 6501f728c5
2 changed files with 21 additions and 0 deletions
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19
drivers/power/power_supply_leds.c
View File

@ -21,6 +21,8 @@
static void power_supply_update_bat_leds(struct power_supply *psy)
{
union power_supply_propval status;
unsigned long delay_on = 0;
unsigned long delay_off = 0;
if (psy->get_property(psy, POWER_SUPPLY_PROP_STATUS, &status))
return;
@ -32,16 +34,22 @@ static void power_supply_update_bat_leds(struct power_supply *psy)
led_trigger_event(psy->charging_full_trig, LED_FULL);
led_trigger_event(psy->charging_trig, LED_OFF);
led_trigger_event(psy->full_trig, LED_FULL);
led_trigger_event(psy->charging_blink_full_solid_trig,
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,
&delay_on, &delay_off);
break;
default:
led_trigger_event(psy->charging_full_trig, LED_OFF);
led_trigger_event(psy->charging_trig, LED_OFF);
led_trigger_event(psy->full_trig, LED_OFF);
led_trigger_event(psy->charging_blink_full_solid_trig,
LED_OFF);
break;
}
}
@ -64,15 +72,24 @@ static int power_supply_create_bat_triggers(struct power_supply *psy)
if (!psy->full_trig_name)
goto full_failed;
psy->charging_blink_full_solid_trig_name = kasprintf(GFP_KERNEL,
"%s-charging-blink-full-solid", psy->name);
if (!psy->charging_blink_full_solid_trig_name)
goto charging_blink_full_solid_failed;
led_trigger_register_simple(psy->charging_full_trig_name,
&psy->charging_full_trig);
led_trigger_register_simple(psy->charging_trig_name,
&psy->charging_trig);
led_trigger_register_simple(psy->full_trig_name,
&psy->full_trig);
led_trigger_register_simple(psy->charging_blink_full_solid_trig_name,
&psy->charging_blink_full_solid_trig);
goto success;
charging_blink_full_solid_failed:
kfree(psy->full_trig_name);
full_failed:
kfree(psy->charging_trig_name);
charging_failed:
@ -88,6 +105,8 @@ static void power_supply_remove_bat_triggers(struct power_supply *psy)
led_trigger_unregister_simple(psy->charging_full_trig);
led_trigger_unregister_simple(psy->charging_trig);
led_trigger_unregister_simple(psy->full_trig);
led_trigger_unregister_simple(psy->charging_blink_full_solid_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);

2
include/linux/power_supply.h
View File

@ -173,6 +173,8 @@ struct power_supply {
char *full_trig_name;
struct led_trigger *online_trig;
char *online_trig_name;
struct led_trigger *charging_blink_full_solid_trig;
char *charging_blink_full_solid_trig_name;
#endif
};