bq27x00_battery: Cache energy property

Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>

1 files changed, 26 insertions, 27 deletions

diff --git a/drivers/power/bq27x00_battery.c b/drivers/power/bq27x00_battery.c
index 6c8dfdb169a1..e9aeb533a1f0 100644
--- a/drivers/power/bq27x00_battery.c
+++ b/drivers/power/bq27x00_battery.c
@@ -84,6 +84,7 @@ struct bq27x00_reg_cache {
         int charge_full;
         int cycle_count;
         int capacity;
+        int energy;
         int flags;
 };
 
@@ -225,6 +226,28 @@ static int bq27x00_battery_read_ilmd(struct bq27x00_device_info *di)
 }
 
 /*
+ * Return the battery Available energy in µWh
+ * Or < 0 if something fails.
+ */
+static int bq27x00_battery_read_energy(struct bq27x00_device_info *di)
+{
+        int ae;
+
+        ae = bq27x00_read(di, BQ27x00_REG_AE, false);
+        if (ae < 0) {
+                dev_err(di->dev, "error reading available energy\n");
+                return ae;
+        }
+
+        if (di->chip == BQ27500)
+                ae *= 1000;
+        else
+                ae = ae * 29200 / BQ27000_RS;
+
+        return ae;
+}
+
+/*
  * Return the battery Cycle count total
  * Or < 0 if something fails.
  */
@@ -268,12 +291,14 @@ static void bq27x00_update(struct bq27x00_device_info *di)
         if (cache.flags >= 0) {
                 if (!is_bq27500 && (cache.flags & BQ27000_FLAG_CI)) {
                         cache.capacity = -ENODATA;
+                        cache.energy = -ENODATA;
                         cache.time_to_empty = -ENODATA;
                         cache.time_to_empty_avg = -ENODATA;
                         cache.time_to_full = -ENODATA;
                         cache.charge_full = -ENODATA;
                 } else {
                         cache.capacity = bq27x00_battery_read_rsoc(di);
+                        cache.energy = bq27x00_battery_read_energy(di);
                         cache.time_to_empty = bq27x00_battery_read_time(di, BQ27x00_REG_TTE);
                         cache.time_to_empty_avg = bq27x00_battery_read_time(di, BQ27x00_REG_TTECP);
                         cache.time_to_full = bq27x00_battery_read_time(di, BQ27x00_REG_TTF);
@@ -435,32 +460,6 @@ static int bq27x00_battery_voltage(struct bq27x00_device_info *di,
         return 0;
 }
 
-/*
- * Return the battery Available energy in µWh
- * Or < 0 if something fails.
- */
-static int bq27x00_battery_energy(struct bq27x00_device_info *di,
-        union power_supply_propval *val)
-{
-        int ae;
-
-        ae = bq27x00_read(di, BQ27x00_REG_AE, false);
-        if (ae < 0) {
-                dev_err(di->dev, "error reading available energy\n");
-                return ae;
-        }
-
-        if (di->chip == BQ27500)
-                ae *= 1000;
-        else
-                ae = ae * 29200 / BQ27000_RS;
-
-        val->intval = ae;
-
-        return 0;
-}
-
-
 static int bq27x00_simple_value(int value,
         union power_supply_propval *val)
 {
@@ -539,7 +538,7 @@ static int bq27x00_battery_get_property(struct power_supply *psy,
                 ret = bq27x00_simple_value(di->cache.cycle_count, val);
                 break;
         case POWER_SUPPLY_PROP_ENERGY_NOW:
-                ret = bq27x00_battery_energy(di, val);
+                ret = bq27x00_simple_value(di->cache.energy, val);
                 break;
         default:
                 return -EINVAL;