power_supply: Add a charge_type property, and use it for olpc driver
This adds a new sysfs file called 'charge_type' which displays the
type of charging (unknown, n/a, trickle charge, or fast charging).
This allows things like battery diagnostics to determine what the
battery/EC is doing without resorting to changing the 'status' sysfs
output.
Signed-off-by: Andres Salomon <dilinger@collabora.co.uk>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
diff --git a/drivers/power/olpc_battery.c b/drivers/power/olpc_battery.c
index 602bbd0..8fefe5a 100644
--- a/drivers/power/olpc_battery.c
+++ b/drivers/power/olpc_battery.c
@@ -233,6 +233,14 @@
if (ret)
return ret;
break;
+ case POWER_SUPPLY_PROP_CHARGE_TYPE:
+ if (ec_byte & BAT_STAT_TRICKLE)
+ val->intval = POWER_SUPPLY_CHARGE_TYPE_TRICKLE;
+ else if (ec_byte & BAT_STAT_CHARGING)
+ val->intval = POWER_SUPPLY_CHARGE_TYPE_FAST;
+ else
+ val->intval = POWER_SUPPLY_CHARGE_TYPE_NONE;
+ break;
case POWER_SUPPLY_PROP_PRESENT:
val->intval = !!(ec_byte & (BAT_STAT_PRESENT |
BAT_STAT_TRICKLE));
@@ -325,6 +333,7 @@
static enum power_supply_property olpc_bat_props[] = {
POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_CHARGE_TYPE,
POWER_SUPPLY_PROP_PRESENT,
POWER_SUPPLY_PROP_HEALTH,
POWER_SUPPLY_PROP_TECHNOLOGY,