ACPI: thinkpad-acpi: add X61t HKEY events

Tomas Carnecky reports that events 0x5009 and 0x500a are swivel events, and
that 0x500b/0x500c are tablet pen storage bay events.

Document these events, and avoid nasty messages when they happen.

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/Documentation/thinkpad-acpi.txt b/Documentation/thinkpad-acpi.txt
index 9d08e472ef74..e1c4550dac99 100644
--- a/Documentation/thinkpad-acpi.txt
+++ b/Documentation/thinkpad-acpi.txt
@@ -499,6 +499,10 @@ The above events are never propagated by the driver.
 
 0x3003          Bay ejection (see 0x2x05) complete, can sleep again
 0x4003          Undocked (see 0x2x04), can sleep again
+0x5009          Tablet swivel: switched to tablet mode
+0x500A          Tablet swivel: switched to normal mode
+0x500B          Tablet pen insterted into its storage bay
+0x500C          Tablet pen removed from its storage bay
 0x5010          Brightness level changed (newer Lenovo BIOSes)
 
 The above events are propagated by the driver.