diff options
Diffstat (limited to 'drivers/power')
| -rw-r--r-- | drivers/power/supply/bq27xxx_battery.c | 24 |
1 files changed, 16 insertions, 8 deletions
diff --git a/drivers/power/supply/bq27xxx_battery.c b/drivers/power/supply/bq27xxx_battery.c index 2bf5e007f16b..363428530ee6 100644 --- a/drivers/power/supply/bq27xxx_battery.c +++ b/drivers/power/supply/bq27xxx_battery.c @@ -1595,17 +1595,24 @@ static inline int bq27xxx_battery_read_fcc(struct bq27xxx_device_info *di) * Return the Design Capacity in µAh * Or < 0 if something fails. */ -static int bq27xxx_battery_read_dcap(struct bq27xxx_device_info *di) +static int bq27xxx_battery_read_dcap(struct bq27xxx_device_info *di, + union power_supply_propval *val) { int dcap; + /* We only have to read charge design full once */ + if (di->charge_design_full > 0) { + val->intval = di->charge_design_full; + return 0; + } + if (di->opts & BQ27XXX_O_ZERO) dcap = bq27xxx_read(di, BQ27XXX_REG_DCAP, true); else dcap = bq27xxx_read(di, BQ27XXX_REG_DCAP, false); if (dcap < 0) { - dev_dbg(di->dev, "error reading initial last measured discharge\n"); + dev_dbg(di->dev, "error reading design capacity\n"); return dcap; } @@ -1614,7 +1621,12 @@ static int bq27xxx_battery_read_dcap(struct bq27xxx_device_info *di) else dcap *= 1000; - return dcap; + /* Save for later reads */ + di->charge_design_full = dcap; + + val->intval = dcap; + + return 0; } /* @@ -1865,10 +1877,6 @@ static void bq27xxx_battery_update_unlocked(struct bq27xxx_device_info *di) */ if (!(di->opts & BQ27XXX_O_ZERO)) bq27xxx_battery_current_and_status(di, NULL, &status, &cache); - - /* We only have to read charge design full once */ - if (di->charge_design_full <= 0) - di->charge_design_full = bq27xxx_battery_read_dcap(di); } if ((di->cache.capacity != cache.capacity) || @@ -2062,7 +2070,7 @@ static int bq27xxx_battery_get_property(struct power_supply *psy, ret = bq27xxx_simple_value(di->cache.charge_full, val); break; case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN: - ret = bq27xxx_simple_value(di->charge_design_full, val); + ret = bq27xxx_battery_read_dcap(di, val); break; /* * TODO: Implement these to make registers set from |