olpc_battery: Add support for CHARGE_NOW

[pandora-kernel.git] / drivers / power / olpc_battery.c

diff --git a/drivers/power/olpc_battery.c b/drivers/power/olpc_battery.c
index 663b730..0f7a7b1 100644 (file)
--- a/drivers/power/olpc_battery.c
+++ b/drivers/power/olpc_battery.c
@@ -249,6 +249,24 @@ static int olpc_bat_get_charge_full_design(union power_supply_propval *val)
        return ret;
 }
 
+static int olpc_bat_get_charge_now(union power_supply_propval *val)
+{
+       uint8_t soc;
+       union power_supply_propval full;
+       int ret;
+
+       ret = olpc_ec_cmd(EC_BAT_SOC, NULL, 0, &soc, 1);
+       if (ret)
+               return ret;
+
+       ret = olpc_bat_get_charge_full_design(&full);
+       if (ret)
+               return ret;
+
+       val->intval = soc * (full.intval / 100);
+       return 0;
+}
+
 /*********************************************************************
  *             Battery properties
  *********************************************************************/
@@ -347,6 +365,11 @@ static int olpc_bat_get_property(struct power_supply *psy,
                if (ret)
                        return ret;
                break;
+       case POWER_SUPPLY_PROP_CHARGE_NOW:
+               ret = olpc_bat_get_charge_now(val);
+               if (ret)
+                       return ret;
+               break;
        case POWER_SUPPLY_PROP_TEMP:
                ret = olpc_ec_cmd(EC_BAT_TEMP, NULL, 0, (void *)&ec_word, 2);
                if (ret)
@@ -395,6 +418,7 @@ static enum power_supply_property olpc_xo1_bat_props[] = {
        POWER_SUPPLY_PROP_CAPACITY,
        POWER_SUPPLY_PROP_CAPACITY_LEVEL,
        POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
+       POWER_SUPPLY_PROP_CHARGE_NOW,
        POWER_SUPPLY_PROP_TEMP,
        POWER_SUPPLY_PROP_TEMP_AMBIENT,
        POWER_SUPPLY_PROP_MANUFACTURER,