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authorPali Rohár <pali.rohar@gmail.com>2012-11-10 18:42:48 +0400
committerAnton Vorontsov <anton.vorontsov@linaro.org>2012-11-19 04:02:41 +0400
commite59ec4a1899dfff007d91b30f00e7211731b816b (patch)
treee9480fd0f47be894769a2999e03d80d0eac033eb /drivers/power
parent6c47a3e00c6e4f3cdac7566c1480de34d9e32e07 (diff)
downloadlinux-e59ec4a1899dfff007d91b30f00e7211731b816b.tar.xz
bq27x00_battery: Fixup nominal available capacity reporting
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>
Diffstat (limited to 'drivers/power')
-rw-r--r--drivers/power/bq27x00_battery.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/power/bq27x00_battery.c b/drivers/power/bq27x00_battery.c
index 5860d4dfbe9c..41b3328ecfc5 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);
}