diff options
| author | Nitin Joshi <nitjoshi@gmail.com> | 2026-01-07 02:45:18 +0900 |
|---|---|---|
| committer | Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> | 2026-01-15 11:07:35 +0200 |
| commit | 28c43bddd0fa8999533feba8be9dc0583eaed281 (patch) | |
| tree | ddc64a27e0f8ec20640a276aebc0e5f536101919 /Documentation/admin-guide | |
| parent | ceeb5c9835696065323cc4c2ab48b1a7a46d8269 (diff) | |
platform/x86: thinkpad_acpi: Add support to detect hardware damage detection capability.
Thinkpads are adding the ability to detect and report hardware damage
status. Add new sysfs interface to identify whether hardware damage
is detected or not.
Initial support is available for the USB-C replaceable connector.
Reviewed-by: Mark Pearson <mpearson-lenovo@squebb.ca>
Signed-off-by: Nitin Joshi <nitjoshi@gmail.com>
Link: https://patch.msgid.link/20260106174519.6402-1-nitjoshi@gmail.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Diffstat (limited to 'Documentation/admin-guide')
| -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 ------------------------------------ |