In addition to the EV_KEY events, thinkpad-acpi may also issue EV_SW
events for switches:
-SW_RFKILL_ALL T60 and later hardare rfkill rocker switch
+SW_RFKILL_ALL T60 and later hardware rfkill rocker switch
SW_TABLET_MODE Tablet ThinkPads HKEY events 0x5009 and 0x500A
Non hot-key ACPI HKEY event map: