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-rw-r--r--Documentation/laptops/thinkpad-acpi.txt25
1 files changed, 22 insertions, 3 deletions
diff --git a/Documentation/laptops/thinkpad-acpi.txt b/Documentation/laptops/thinkpad-acpi.txt
index 898b4987bb80..41bc99fa1884 100644
--- a/Documentation/laptops/thinkpad-acpi.txt
+++ b/Documentation/laptops/thinkpad-acpi.txt
@@ -1,7 +1,7 @@
1 ThinkPad ACPI Extras Driver 1 ThinkPad ACPI Extras Driver
2 2
3 Version 0.21 3 Version 0.22
4 May 29th, 2008 4 November 23rd, 2008
5 5
6 Borislav Deianov <borislav@users.sf.net> 6 Borislav Deianov <borislav@users.sf.net>
7 Henrique de Moraes Holschuh <hmh@hmh.eng.br> 7 Henrique de Moraes Holschuh <hmh@hmh.eng.br>
@@ -16,7 +16,8 @@ supported by the generic Linux ACPI drivers.
16This driver used to be named ibm-acpi until kernel 2.6.21 and release 16This driver used to be named ibm-acpi until kernel 2.6.21 and release
170.13-20070314. It used to be in the drivers/acpi tree, but it was 170.13-20070314. It used to be in the drivers/acpi tree, but it was
18moved to the drivers/misc tree and renamed to thinkpad-acpi for kernel 18moved to the drivers/misc tree and renamed to thinkpad-acpi for kernel
192.6.22, and release 0.14. 192.6.22, and release 0.14. It was moved to drivers/platform/x86 for
20kernel 2.6.29 and release 0.22.
20 21
21The driver is named "thinkpad-acpi". In some places, like module 22The driver is named "thinkpad-acpi". In some places, like module
22names, "thinkpad_acpi" is used because of userspace issues. 23names, "thinkpad_acpi" is used because of userspace issues.
@@ -1412,6 +1413,24 @@ Sysfs notes:
1412 rfkill controller switch "tpacpi_wwan_sw": refer to 1413 rfkill controller switch "tpacpi_wwan_sw": refer to
1413 Documentation/rfkill.txt for details. 1414 Documentation/rfkill.txt for details.
1414 1415
1416EXPERIMENTAL: UWB
1417-----------------
1418
1419This feature is marked EXPERIMENTAL because it has not been extensively
1420tested and validated in various ThinkPad models yet. The feature may not
1421work as expected. USE WITH CAUTION! To use this feature, you need to supply
1422the experimental=1 parameter when loading the module.
1423
1424sysfs rfkill class: switch "tpacpi_uwb_sw"
1425
1426This feature exports an rfkill controller for the UWB device, if one is
1427present and enabled in the BIOS.
1428
1429Sysfs notes:
1430
1431 rfkill controller switch "tpacpi_uwb_sw": refer to
1432 Documentation/rfkill.txt for details.
1433
1415Multiple Commands, Module Parameters 1434Multiple Commands, Module Parameters
1416------------------------------------ 1435------------------------------------
1417 1436