From e59ec4a1899dfff007d91b30f00e7211731b816b Mon Sep 17 00:00:00 2001 From: Pali Rohár Date: Sat, 10 Nov 2012 15:42:48 +0100 Subject: bq27x00_battery: Fixup nominal available capacity reporting MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit We should not not report nominal available capacity if battery is not calibrated, as we don't want to represent bogus values in the sysfs and confuse userland. Signed-off-by: Pali Rohár Signed-off-by: Anton Vorontsov --- drivers/power/bq27x00_battery.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'drivers/power') diff --git a/drivers/power/bq27x00_battery.c b/drivers/power/bq27x00_battery.c index 5860d4dfbe9..41b3328ecfc 100644 --- a/drivers/power/bq27x00_battery.c +++ b/drivers/power/bq27x00_battery.c @@ -230,6 +230,14 @@ static int bq27x00_battery_read_charge(struct bq27x00_device_info *di, u8 reg) */ static inline int bq27x00_battery_read_nac(struct bq27x00_device_info *di) { + int flags; + bool is_bq27500 = di->chip == BQ27500; + bool is_higher = bq27xxx_is_chip_version_higher(di); + + flags = bq27x00_read(di, BQ27x00_REG_FLAGS, !is_bq27500); + if (flags >= 0 && !is_higher && (flags & BQ27000_FLAG_CI)) + return -ENODATA; + return bq27x00_battery_read_charge(di, BQ27x00_REG_NAC); } -- cgit v1.2.3-70-g09d2