Hi,
On 08.04.21 15:51, Sebastian Reichel wrote:
IIUIC you have 'force_discharge', which basically means the system
is running from battery power despite an AC adapter being connected
and 'inhibit_discharge', which inhibits charging, so system does not
charge battery when AC is connected, but uses AC to supply itself
(so battery is idle)?
We already have this kind of features on embedded systems (which
often provide all kind of charger details). Those drivers solve
this by having a writable 'status' property in the charger device:
What: /sys/class/power_supply/<supply_name>/status
Date: May 2007
Contact: linux-pm@xxxxxxxxxxxxxxx
Description:
Represents the charging status of the battery. Normally this
is read-only reporting although for some supplies this can be
used to enable/disable charging to the battery.
Access: Read, Write
Valid values:
"Unknown", "Charging", "Discharging",
"Not charging", "Full"
If I do not miss anything writing "Discharging" is the same as forced
discharge and "Not Charging" (AKA Idle) is the same as your inhibit feature.
There are ThinkPads with two batteries (BAT0, BAT1) and the hardware
allows to select which one to discharge. An approach through
/sys/class/power_supply/AC/status won't cover this.
--
Freundliche Grüße / Kind regards,
Thomas Koch
Mail : linrunner@xxxxxxx
Web : https://linrunner.de/tlp
