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thinkpad-acpi: deprecate hotkey_bios_mask

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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>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Henrique de Moraes Holschuh 2009-09-12 15:22:15 -03:00 committed by Len Brown
parent db25f16d1d
commit 06777be6d8
2 changed files with 7 additions and 1 deletions
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6
Documentation/laptops/thinkpad-acpi.txt
View file

@ -240,9 +240,13 @@ sysfs notes:
Returns 0.
hotkey_bios_mask:
DEPRECATED, DON'T USE, WILL BE REMOVED IN THE FUTURE.
Returns the hot keys mask when thinkpad-acpi was loaded.
Upon module unload, the hot keys mask will be restored
to this value.
to this value. This is always 0x80c, because those are
the hotkeys that were supported by ancient firmware
without mask support.
hotkey_enable:
DEPRECATED, WILL BE REMOVED SOON.

2
drivers/platform/x86/thinkpad_acpi.c
View file

@ -2544,6 +2544,8 @@ static ssize_t hotkey_bios_mask_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
printk_deprecated_attribute("hotkey_bios_mask",
"This attribute is useless.");
return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask);
}