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bq27x00_battery: Fixup nominal available capacity reporting

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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 <pali.rohar@gmail.com>
Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org>
This commit is contained in:
Pali Rohár 2012-11-10 15:42:48 +01:00 committed by Anton Vorontsov
parent 6c47a3e00c
commit e59ec4a189
1 changed files with 8 additions and 0 deletions
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8
drivers/power/bq27x00_battery.c
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@ -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) 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); return bq27x00_battery_read_charge(di, BQ27x00_REG_NAC);
} }