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| author | Pali Rohár <pali.rohar@gmail.com> | 2011-11-01 01:43:05 +0100 |
|---|---|---|
| committer | Anton Vorontsov <cbouatmailru@gmail.com> | 2011-11-25 23:58:16 +0400 |
| commit | 4b226c2cf04eb373369d298fa00181b0eec71233 (patch) | |
| tree | 63fd6b047b61b29c4e4352a41f4a1f0b4f5dc0b9 /drivers/power | |
| parent | d66bab3f3a5119084ac0ed010a7eae0000af4f16 (diff) | |
| download | linux-4b226c2cf04eb373369d298fa00181b0eec71233.tar.gz linux-4b226c2cf04eb373369d298fa00181b0eec71233.tar.bz2 linux-4b226c2cf04eb373369d298fa00181b0eec71233.zip | |
bq27x00_battery: Report -ENODATA if bq27000 battery was not calibrated
* CI (Capacity Inaccurate) flag is set after full reset on bq27000 battery
* when is set, all capacity properties should be reported incorrectly,
because there was no learning cycle and battery was not calibrated
* instead reporting incorrect values, report -ENODATA
Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
Diffstat (limited to 'drivers/power')
| -rw-r--r-- | drivers/power/bq27x00_battery.c | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/drivers/power/bq27x00_battery.c b/drivers/power/bq27x00_battery.c index a5311225b964..6c8dfdb169a1 100644 --- a/drivers/power/bq27x00_battery.c +++ b/drivers/power/bq27x00_battery.c @@ -56,6 +56,7 @@ #define BQ27000_REG_ILMD 0x76 /* Initial last measured discharge */ #define BQ27000_FLAG_EDVF BIT(0) /* Final End-of-Discharge-Voltage flag */ #define BQ27000_FLAG_EDV1 BIT(1) /* First End-of-Discharge-Voltage flag */ +#define BQ27000_FLAG_CI BIT(4) /* Capacity Inaccurate flag */ #define BQ27000_FLAG_FC BIT(5) #define BQ27000_FLAG_CHGS BIT(7) /* Charge state flag */ @@ -265,12 +266,20 @@ static void bq27x00_update(struct bq27x00_device_info *di) cache.flags = bq27x00_read(di, BQ27x00_REG_FLAGS, is_bq27500); if (cache.flags >= 0) { - cache.capacity = bq27x00_battery_read_rsoc(di); + if (!is_bq27500 && (cache.flags & BQ27000_FLAG_CI)) { + cache.capacity = -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.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); + cache.charge_full = bq27x00_battery_read_lmd(di); + } cache.temperature = bq27x00_read(di, BQ27x00_REG_TEMP, false); - 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); - cache.charge_full = bq27x00_battery_read_lmd(di); cache.cycle_count = bq27x00_battery_read_cyct(di); /* We only have to read charge design full once */ |