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| author |   Barnabás Pőcze <pobrn@protonmail.com> | 2020-07-27 19:31:25 +0000 |
|---|---|---|
| committer |   Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2020-07-28 12:31:14 +0300 |
| commit | 61781298521eb59be6dd82f84c50e64afc77cd24 (patch) | |
| tree | 301e49b7cda1f3fabeae6ccf652b8b60ee069de5 /Documentation/admin-guide/laptops/thinkpad-acpi.rst | |
| parent | platform/x86: thinkpad_acpi: use standard charge control attribute names (diff) | |
| download | linux-dev-61781298521eb59be6dd82f84c50e64afc77cd24.tar.xz linux-dev-61781298521eb59be6dd82f84c50e64afc77cd24.zip | |
platform/x86: thinkpad_acpi: add documentation for battery charge control
Add a section to the Thinkpad ACPI extras driver documentation detailing
the provided features that may be used to modify battery charge related state.
As of yet, only charge_control_{start,end}_threshold attributes are supported
and documented.
Signed-off-by: Barnabás Pőcze <pobrn@protonmail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Diffstat (limited to 'Documentation/admin-guide/laptops/thinkpad-acpi.rst')
| -rw-r--r-- | Documentation/admin-guide/laptops/thinkpad-acpi.rst | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/Documentation/admin-guide/laptops/thinkpad-acpi.rst b/Documentation/admin-guide/laptops/thinkpad-acpi.rst index 99066aa8d97b..fb0d346bf31a 100644 --- a/Documentation/admin-guide/laptops/thinkpad-acpi.rst +++ b/Documentation/admin-guide/laptops/thinkpad-acpi.rst @@ -1485,6 +1485,23 @@ For more details about which buttons will appear depending on the mode, please review the laptop's user guide: http://www.lenovo.com/shop/americas/content/user_guides/x1carbon_2_ug_en.pdf +Battery charge control +---------------------- + +sysfs attributes: +/sys/class/power_supply/BAT*/charge_control_{start,end}_threshold + +These two attributes are created for those batteries that are supported by the +driver. They enable the user to control the battery charge thresholds of the +given battery. Both values may be read and set. `charge_control_start_threshold` +accepts an integer between 0 and 99 (inclusive); this value represents a battery +percentage level, below which charging will begin. `charge_control_end_threshold` +accepts an integer between 1 and 100 (inclusive); this value represents a battery +percentage level, above which charging will stop. + +The exact semantics of the attributes may be found in +Documentation/ABI/testing/sysfs-class-power. + Multiple Commands, Module Parameters ------------------------------------ |