diff options
| author | Marcus Cooper <marcus.xm.cooper@stericsson.com> | 2013-01-11 13:12:54 (GMT) |
|---|---|---|
| committer | Anton Vorontsov <anton@enomsg.org> | 2013-01-16 01:43:46 (GMT) |
| commit | ea4024017831d61874351defe8f8c58ae73f8009 (patch) | |
| tree | 0411f756d15ee826c05a603e1218125a0410fcc0 /include/linux/mfd/abx500/ab8500-bm.h | |
| parent | a864c5a869dcdb40617fc15166385e0ffa609592 (diff) | |
| download | linux-fsl-qoriq-ea4024017831d61874351defe8f8c58ae73f8009.tar.xz | |
ab8500_bm: Recharge condition not optimal for battery
Today the battery recharge is determined with a voltage threshold. This
voltage threshold is only valid when the battery is relaxed. In charging
algorithm the voltage read is the loaded battery voltage and no
compensation is done to get the relaxed voltage. When maintenance
charging is not selected, this makes the recharging condition to almost
immediately activate when there is a discharge present on the battery.
Depending on which vendor the battery comes from this behavior can wear
out the battery much faster than normal.
The fuelgauge driver is responsible to monitor the actual battery
capacity and is able to estimate the remaining capacity. It is better to
use the remaining capacity as a limit to determine when battery should
be recharged.
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Marcus Cooper <marcus.xm.cooper@stericsson.com>
Reviewed-by: Hakan BERG <hakan.berg@stericsson.com>
Reviewed-by: Jonas ABERG <jonas.aberg@stericsson.com>
Signed-off-by: Anton Vorontsov <anton@enomsg.org>
Diffstat (limited to 'include/linux/mfd/abx500/ab8500-bm.h')
| -rw-r--r-- | include/linux/mfd/abx500/ab8500-bm.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/mfd/abx500/ab8500-bm.h b/include/linux/mfd/abx500/ab8500-bm.h index 6c6a02e..fac684a 100644 --- a/include/linux/mfd/abx500/ab8500-bm.h +++ b/include/linux/mfd/abx500/ab8500-bm.h @@ -355,6 +355,7 @@ struct ab8500_bm_charger_parameters { * @bkup_bat_v voltage which we charge the backup battery with * @bkup_bat_i current which we charge the backup battery with * @no_maintenance indicates that maintenance charging is disabled + * @capacity_scaling indicates whether capacity scaling is to be used * @adc_therm placement of thermistor, batctrl or battemp adc * @chg_unknown_bat flag to enable charging of unknown batteries * @enable_overshoot flag to enable VBAT overshoot control @@ -383,6 +384,7 @@ struct ab8500_bm_data { int bkup_bat_v; int bkup_bat_i; bool no_maintenance; + bool capacity_scaling; bool chg_unknown_bat; bool enable_overshoot; enum abx500_adc_therm adc_therm; |