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path: root/drivers/power/olpc_battery.c
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Diffstat (limited to 'drivers/power/olpc_battery.c')
-rw-r--r--drivers/power/olpc_battery.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/power/olpc_battery.c b/drivers/power/olpc_battery.c
index ab1e8289f07f..7524a63a54cb 100644
--- a/drivers/power/olpc_battery.c
+++ b/drivers/power/olpc_battery.c
@@ -84,6 +84,8 @@ static struct power_supply olpc_ac = {
.get_property = olpc_ac_get_prop,
};
+static char bat_serial[17]; /* Ick */
+
/*********************************************************************
* Battery properties
*********************************************************************/
@@ -94,6 +96,7 @@ static int olpc_bat_get_property(struct power_supply *psy,
int ret = 0;
int16_t ec_word;
uint8_t ec_byte;
+ uint64_t ser_buf;
ret = olpc_ec_cmd(EC_BAT_STATUS, NULL, 0, &ec_byte, 1);
if (ret)
@@ -241,6 +244,14 @@ static int olpc_bat_get_property(struct power_supply *psy,
ec_word = be16_to_cpu(ec_word);
val->intval = ec_word * 100 / 256;
break;
+ case POWER_SUPPLY_PROP_SERIAL_NUMBER:
+ ret = olpc_ec_cmd(EC_BAT_SERIAL, NULL, 0, (void *)&ser_buf, 8);
+ if (ret)
+ return ret;
+
+ sprintf(bat_serial, "%016llx", (long long)be64_to_cpu(ser_buf));
+ val->strval = bat_serial;
+ break;
default:
ret = -EINVAL;
break;
@@ -260,6 +271,7 @@ static enum power_supply_property olpc_bat_props[] = {
POWER_SUPPLY_PROP_TEMP,
POWER_SUPPLY_PROP_TEMP_AMBIENT,
POWER_SUPPLY_PROP_MANUFACTURER,
+ POWER_SUPPLY_PROP_SERIAL_NUMBER,
};
/*********************************************************************