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Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/admin-guide/laptops/thinkpad-acpi.rst | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/Documentation/admin-guide/laptops/thinkpad-acpi.rst b/Documentation/admin-guide/laptops/thinkpad-acpi.rst index 4ab0fef7d440..2f910ff31b37 100644 --- a/Documentation/admin-guide/laptops/thinkpad-acpi.rst +++ b/Documentation/admin-guide/laptops/thinkpad-acpi.rst @@ -54,6 +54,7 @@ detailed description): - Setting keyboard language - WWAN Antenna type - Auxmac + - Hardware damage detection capability A compatibility table by model and feature is maintained on the web site, http://ibm-acpi.sf.net/. I appreciate any success or failure @@ -1576,6 +1577,27 @@ percentage level, above which charging will stop. The exact semantics of the attributes may be found in Documentation/ABI/testing/sysfs-class-power. +Hardware damage detection capability +------------------------------------ + +sysfs attributes: hwdd_status + +Thinkpads are adding the ability to detect and report hardware damage. +Add new sysfs interface to identify the damaged device status. +Initial support is available for the USB-C replaceable connector. + +The command to check device damaged status is:: + + cat /sys/devices/platform/thinkpad_acpi/hwdd_status + +This value displays status of device damaged. + +- 0 = Not Damaged +- 1 = Damaged + +The property is read-only. If feature is not supported then sysfs +attribute is not created. + Multiple Commands, Module Parameters ------------------------------------ |