power: supply: sc27xx: Add POWER_SUPPLY_PROP_CALIBRATE attribute

Add the 'POWER_SUPPLY_PROP_CALIBRATE' attribute to allow chareger manager
to calibrate the battery capacity.

Signed-off-by: Yuanjiang Yu <yuanjiang.yu@unisoc.com>
Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

1 files changed, 19 insertions, 8 deletions

diff --git a/drivers/power/supply/sc27xx_fuel_gauge.c b/drivers/power/supply/sc27xx_fuel_gauge.c
index 6071671caaa9..bc8f5bda5762 100644
--- a/drivers/power/supply/sc27xx_fuel_gauge.c
+++ b/drivers/power/supply/sc27xx_fuel_gauge.c
@@ -111,6 +111,7 @@ struct sc27xx_fgu_data {
 static int sc27xx_fgu_cap_to_clbcnt(struct sc27xx_fgu_data *data, int capacity);
 static void sc27xx_fgu_capacity_calibration(struct sc27xx_fgu_data *data,
                                             int cap, bool int_mode);
+static void sc27xx_fgu_adjust_cap(struct sc27xx_fgu_data *data, int cap);
 
 static const char * const sc27xx_charger_supply_name[] = {
         "sc2731_charger",
@@ -610,17 +611,25 @@ static int sc27xx_fgu_set_property(struct power_supply *psy,
         struct sc27xx_fgu_data *data = power_supply_get_drvdata(psy);
         int ret;
 
-        if (psp != POWER_SUPPLY_PROP_CAPACITY)
-                return -EINVAL;
-
         mutex_lock(&data->lock);
 
-        ret = sc27xx_fgu_save_last_cap(data, val->intval);
+        switch (psp) {
+        case POWER_SUPPLY_PROP_CAPACITY:
+                ret = sc27xx_fgu_save_last_cap(data, val->intval);
+                if (ret < 0)
+                        dev_err(data->dev, "failed to save battery capacity\n");
+                break;
 
-        mutex_unlock(&data->lock);
+        case POWER_SUPPLY_PROP_CALIBRATE:
+                sc27xx_fgu_adjust_cap(data, val->intval);
+                ret = 0;
+                break;
 
-        if (ret < 0)
-                dev_err(data->dev, "failed to save battery capacity\n");
+        default:
+                ret = -EINVAL;
+        }
+
+        mutex_unlock(&data->lock);
 
         return ret;
 }
@@ -635,7 +644,8 @@ static void sc27xx_fgu_external_power_changed(struct power_supply *psy)
 static int sc27xx_fgu_property_is_writeable(struct power_supply *psy,
                                             enum power_supply_property psp)
 {
-        return psp == POWER_SUPPLY_PROP_CAPACITY;
+        return psp == POWER_SUPPLY_PROP_CAPACITY ||
+                psp == POWER_SUPPLY_PROP_CALIBRATE;
 }
 
 static enum power_supply_property sc27xx_fgu_props[] = {
@@ -651,6 +661,7 @@ static enum power_supply_property sc27xx_fgu_props[] = {
         POWER_SUPPLY_PROP_CURRENT_AVG,
         POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE,
         POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN,
+        POWER_SUPPLY_PROP_CALIBRATE,
 };
 
 static const struct power_supply_desc sc27xx_fgu_desc = {