power: supply: sbs-battery: add POWER_SUPPLY_PROP_CURRENT_AVG support

Expose averaged current information, which is part of the SBS
standard and should be supported by all batteries.
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

drivers/power/supply/sbs-battery.c

@@ -25,7 +25,8 @@ enum {
 	REG_MANUFACTURER_DATA,
 	REG_TEMPERATURE,
 	REG_VOLTAGE,
-	REG_CURRENT,
+	REG_CURRENT_NOW,
+	REG_CURRENT_AVG,
 	REG_MAX_ERR,
 	REG_CAPACITY,
 	REG_TIME_TO_EMPTY,
@@ -92,8 +93,10 @@ static const struct chip_data {
 		SBS_DATA(POWER_SUPPLY_PROP_TEMP, 0x08, 0, 65535),
 	[REG_VOLTAGE] =
 		SBS_DATA(POWER_SUPPLY_PROP_VOLTAGE_NOW, 0x09, 0, 20000),
-	[REG_CURRENT] =
+	[REG_CURRENT_NOW] =
 		SBS_DATA(POWER_SUPPLY_PROP_CURRENT_NOW, 0x0A, -32768, 32767),
+	[REG_CURRENT_AVG] =
+		SBS_DATA(POWER_SUPPLY_PROP_CURRENT_AVG, 0x0B, -32768, 32767),
 	[REG_MAX_ERR] =
 		SBS_DATA(POWER_SUPPLY_PROP_CAPACITY_ERROR_MARGIN, 0x0c, 0, 100),
 	[REG_CAPACITY] =
@@ -142,6 +145,7 @@ static enum power_supply_property sbs_properties[] = {
 	POWER_SUPPLY_PROP_CYCLE_COUNT,
 	POWER_SUPPLY_PROP_VOLTAGE_NOW,
 	POWER_SUPPLY_PROP_CURRENT_NOW,
+	POWER_SUPPLY_PROP_CURRENT_AVG,
 	POWER_SUPPLY_PROP_CAPACITY,
 	POWER_SUPPLY_PROP_CAPACITY_ERROR_MARGIN,
 	POWER_SUPPLY_PROP_TEMP,
@@ -324,7 +328,7 @@ static int sbs_status_correct(struct i2c_client *client, int *intval)
 {
 	int ret;
 
-	ret = sbs_read_word_data(client, sbs_data[REG_CURRENT].addr);
+	ret = sbs_read_word_data(client, sbs_data[REG_CURRENT_NOW].addr);
 	if (ret < 0)
 		return ret;
 
@@ -521,6 +525,7 @@ static void  sbs_unit_adjustment(struct i2c_client *client,
 	case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
 	case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:
 	case POWER_SUPPLY_PROP_CURRENT_NOW:
+	case POWER_SUPPLY_PROP_CURRENT_AVG:
 	case POWER_SUPPLY_PROP_CHARGE_NOW:
 	case POWER_SUPPLY_PROP_CHARGE_FULL:
 	case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
@@ -699,6 +704,7 @@ static int sbs_get_property(struct power_supply *psy,
 	case POWER_SUPPLY_PROP_CYCLE_COUNT:
 	case POWER_SUPPLY_PROP_VOLTAGE_NOW:
 	case POWER_SUPPLY_PROP_CURRENT_NOW:
+	case POWER_SUPPLY_PROP_CURRENT_AVG:
 	case POWER_SUPPLY_PROP_TEMP:
 	case POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG:
 	case POWER_SUPPLY_PROP_TIME_TO_FULL_AVG: