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| author | Arvid Norlander <[email protected]> | 2022-09-02 20:00:35 +0200 |
|---|---|---|
| committer | Hans de Goede <[email protected]> | 2022-09-09 21:58:16 +0200 |
| commit | 89655fbb396aff20bd5247fa6b13a689e2f10f9c (patch) | |
| tree | 4ff387f530c3682b42cca22139d7d1680ec5fea2 /net/lapb/lapb_timer.c | |
| parent | c727ba4cd95a12d8e43b02963d3ba4daddbd100c (diff) | |
platform/x86: Battery charge mode in toshiba_acpi (internals)
This commit adds the internal functions to control the Toshiba laptop.
Unlike for example ThinkPads where this control is granular here it is
just off/on. When off it charges to 100%. When on it charges to about 80%.
Controlling this setting is done via HCI register 0x00ba. Setting to value
1 will result in limiting the charing to 80% of the battery capacity,
while setting it to 0 will allow charging to 100%.
Reading the current state is a bit weird, and needs a 1 set in the last
position of the query for whatever reason. In addition, the read may
return 0x8d20 (Data not available) rarely, so a retry mechanism is needed.
According to the Windows program used to control the feature the setting
will not take effect until the battery has been discharged to around 50%.
However, in my testing it takes effect as soon as the charge drops below
80%. On Windows Toshiba branded this feature as "Eco charging".
Signed-off-by: Arvid Norlander <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Reviewed-by: Hans de Goede <[email protected]>
Signed-off-by: Hans de Goede <[email protected]>
Diffstat (limited to 'net/lapb/lapb_timer.c')
0 files changed, 0 insertions, 0 deletions