max17042_battery: Support CHARGE_COUNTER power supply attribute

This patch adds the support for CHARGE_COUNTER power supply attribute
to max17042/47 driver.

Note:QH(Charge Counter) register is not documented in max17042 the Spec.

Signed-off-by: Ramakrishna Pallala <ramakrishna.pallala@intel.com>
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/power/max17042_battery.c b/drivers/power/max17042_battery.c
index 140788b309f..74abc6c755b 100644
--- a/drivers/power/max17042_battery.c
+++ b/drivers/power/max17042_battery.c
@@ -113,6 +113,7 @@ static enum power_supply_property max17042_battery_props[] = {
         POWER_SUPPLY_PROP_VOLTAGE_OCV,
         POWER_SUPPLY_PROP_CAPACITY,
         POWER_SUPPLY_PROP_CHARGE_FULL,
+        POWER_SUPPLY_PROP_CHARGE_COUNTER,
         POWER_SUPPLY_PROP_TEMP,
         POWER_SUPPLY_PROP_CURRENT_NOW,
         POWER_SUPPLY_PROP_CURRENT_AVG,
@@ -201,6 +202,13 @@ static int max17042_get_property(struct power_supply *psy,
 
                 val->intval = ret * 1000 / 2;
                 break;
+        case POWER_SUPPLY_PROP_CHARGE_COUNTER:
+                ret = max17042_read_reg(chip->client, MAX17042_QH);
+                if (ret < 0)
+                        return ret;
+
+                val->intval = ret * 1000 / 2;
+                break;
         case POWER_SUPPLY_PROP_TEMP:
                 ret = max17042_read_reg(chip->client, MAX17042_TEMP);
                 if (ret < 0)