thinkpad-acpi: deprecate hotkey_bios_mask
commitade9b94b94ce0723f55355e990c559be4083a61c
authorHenrique de Moraes Holschuh <hmh@hmh.eng.br>
Fri, 13 May 2011 12:22:08 +0000 (13 09:22 -0300)
committerHenrique de Moraes Holschuh <hmh@hmh.eng.br>
Fri, 13 May 2011 12:22:08 +0000 (13 09:22 -0300)
tree5674d58fde16a3e73831801fa57d7727d2dae0b6
parent46a382980542ba53ca3a94367977a3acc8f6143a
thinkpad-acpi: deprecate hotkey_bios_mask

Some analysis of the ACPI DSDTs shows that the HKEY pre-enabled mask
is always 0x80c (FN+F3,FN+F4 and FN+F12), which are the hotkeys that
the second gen of HKEY firmware supported (the first gen didn't report
any hotkeys, the second reported these tree hotkeys but had no mask
support, and the third added mask support).

So, this is probably some sort of backwards compatibility with older
versions of the IBM ThinkVantage suite.  We have no use for that, and
I know of exactly ZERO users of that attribute, anyway.  Start the
process of getting rid of it.

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Documentation/laptops/thinkpad-acpi.txt
drivers/platform/x86/thinkpad_acpi.c