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| author | Fernando Eckhardt Valle <fevalle@ipt.br> | 2023-09-26 23:21:44 +0300 |
|---|---|---|
| committer | Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> | 2023-09-28 13:12:36 +0300 |
| commit | 18801efed74a671f5c3bd1869739854cf2a5568f (patch) | |
| tree | e55d2b9a3e55f1d0879f666c0a68530b8b26ba30 /Documentation/admin-guide/laptops/thinkpad-acpi.rst | |
| parent | 9cf63f3a33e929f7eca36409914b8c12102b9984 (diff) | |
| download | linux-18801efed74a671f5c3bd1869739854cf2a5568f.tar.xz | |
platform/x86: thinkpad_acpi: sysfs interface to auxmac
Newer Thinkpads have a feature called MAC Address Pass-through.
This patch provides a sysfs interface that userspace can use
to get this auxiliary mac address.
Signed-off-by: Fernando Eckhardt Valle <fevalle@ipt.br>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20230926202144.5906-1-fevalle@ipt.br
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/laptops/thinkpad-acpi.rst')
| -rw-r--r-- | Documentation/admin-guide/laptops/thinkpad-acpi.rst | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/Documentation/admin-guide/laptops/thinkpad-acpi.rst b/Documentation/admin-guide/laptops/thinkpad-acpi.rst index e27a1c3f634e..98d304010170 100644 --- a/Documentation/admin-guide/laptops/thinkpad-acpi.rst +++ b/Documentation/admin-guide/laptops/thinkpad-acpi.rst @@ -53,6 +53,7 @@ detailed description): - Lap mode sensor - Setting keyboard language - WWAN Antenna type + - Auxmac A compatibility table by model and feature is maintained on the web site, http://ibm-acpi.sf.net/. I appreciate any success or failure @@ -1511,6 +1512,25 @@ Currently 2 antenna types are supported as mentioned below: The property is read-only. If the platform doesn't have support the sysfs class is not created. +Auxmac +------ + +sysfs: auxmac + +Some newer Thinkpads have a feature called MAC Address Pass-through. This +feature is implemented by the system firmware to provide a system unique MAC, +that can override a dock or USB ethernet dongle MAC, when connected to a +network. This property enables user-space to easily determine the MAC address +if the feature is enabled. + +The values of this auxiliary MAC are: + + cat /sys/devices/platform/thinkpad_acpi/auxmac + +If the feature is disabled, the value will be 'disabled'. + +This property is read-only. + Adaptive keyboard ----------------- |