[PATCH v4 7/8] power: supply: rt5033_battery: Adopt status property from charger

[Jakob Hauser <jahau@rocketmail.com>]

The rt5033-battery fuelgauge can't get a status by itself. The rt5033-charger
can, let's get this value.

Tested-by: Raymond Hackley <raymondhackley@protonmail.com>
Signed-off-by: Jakob Hauser <jahau@rocketmail.com>
---
 drivers/power/supply/rt5033_battery.c | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/drivers/power/supply/rt5033_battery.c b/drivers/power/supply/rt5033_battery.c
index 5c04cf305219..a6520716d813 100644
--- a/drivers/power/supply/rt5033_battery.c
+++ b/drivers/power/supply/rt5033_battery.c
@@ -12,6 +12,26 @@
 #include <linux/mfd/rt5033-private.h>
 #include <linux/mfd/rt5033.h>
 
+static int rt5033_battery_get_status(struct i2c_client *client)
+{
+	struct power_supply *charger;
+	union power_supply_propval val;
+	int ret;
+
+	charger = power_supply_get_by_name("rt5033-charger");
+	if (!charger)
+		return POWER_SUPPLY_STATUS_UNKNOWN;
+
+	ret = power_supply_get_property(charger, POWER_SUPPLY_PROP_STATUS, &val);
+	if (ret) {
+		power_supply_put(charger);
+		return POWER_SUPPLY_STATUS_UNKNOWN;
+	}
+
+	power_supply_put(charger);
+	return val.intval;
+}
+
 static int rt5033_battery_get_capacity(struct i2c_client *client)
 {
 	struct rt5033_battery *battery = i2c_get_clientdata(client);
@@ -84,6 +104,9 @@ static int rt5033_battery_get_property(struct power_supply *psy,
 	case POWER_SUPPLY_PROP_CAPACITY:
 		val->intval = rt5033_battery_get_capacity(battery->client);
 		break;
+	case POWER_SUPPLY_PROP_STATUS:
+		val->intval = rt5033_battery_get_status(battery->client);
+		break;
 	default:
 		return -EINVAL;
 	}
@@ -96,6 +119,7 @@ static enum power_supply_property rt5033_battery_props[] = {
 	POWER_SUPPLY_PROP_VOLTAGE_OCV,
 	POWER_SUPPLY_PROP_PRESENT,
 	POWER_SUPPLY_PROP_CAPACITY,
+	POWER_SUPPLY_PROP_STATUS,
 };
 
 static const struct regmap_config rt5033_battery_regmap_config = {
-- 
2.39.2