From 61781298521eb59be6dd82f84c50e64afc77cd24 Mon Sep 17 00:00:00 2001 From: Barnabás Pőcze Date: Mon, 27 Jul 2020 19:31:25 +0000 Subject: platform/x86: thinkpad_acpi: add documentation for battery charge control MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Signed-off-by: Andy Shevchenko --- Documentation/admin-guide/laptops/thinkpad-acpi.rst | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'Documentation/admin-guide') 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 ------------------------------------ -- cgit v1.2.3