power: pm8921-charger: implement CURRENT_NOW property
The pm8921 bms driver can provide instantaneous current. Use the
current now property of the power_supply class to expose this
feature.
Signed-off-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org>
diff --git a/drivers/power/pm8921-charger.c b/drivers/power/pm8921-charger.c
index 0e46b0b..d2cba64 100644
--- a/drivers/power/pm8921-charger.c
+++ b/drivers/power/pm8921-charger.c
@@ -517,6 +517,7 @@
POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
POWER_SUPPLY_PROP_VOLTAGE_NOW,
POWER_SUPPLY_PROP_CAPACITY,
+ POWER_SUPPLY_PROP_CURRENT_NOW,
};
static int get_prop_battery_mvolts(struct pm8921_chg_chip *chip)
@@ -545,6 +546,19 @@
return percent_soc;
}
+static int get_prop_batt_current(struct pm8921_chg_chip *chip)
+{
+ int result_ma, rc;
+
+ rc = pm8921_bms_get_battery_current(&result_ma);
+ if (rc) {
+ pr_err("unable to get batt current rc = %d\n", rc);
+ return rc;
+ } else {
+ return result_ma;
+ }
+}
+
static int get_prop_batt_health(struct pm8921_chg_chip *chip)
{
int temp;
@@ -638,6 +652,9 @@
case POWER_SUPPLY_PROP_CAPACITY:
val->intval = get_prop_batt_capacity(chip);
break;
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
+ val->intval = get_prop_batt_current(chip);
+ break;
default:
return -EINVAL;
}