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Input: add input event to APM event bridge

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This patch adds a very simple input power event to APM user suspend
event bridge. Its currently only works for the systems using the
emulated APM driver but could easily be extended to work with anything
with a true APM BIOS too.

This covers a standard embedded system need which is to suspend when the
user presses a suspend button. It leaves options open to system
integrators to ignore (or unload) this code and implement their own more
complex event handling system.

Its hidden behind the EMBEDDED Kconfig option since its only likely to
be of use to embedded style systems. It can be built as a module so the
"hardcoded" policy can easily be removed from the kernel at runtime if
desired too.

Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Richard Purdie
2008-01-30 16:33:59 -05:00
committed by Dmitry Torokhov
parent d182c10c84
commit e17bb1de3b
3 changed files with 144 additions and 0 deletions
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12
drivers/input/Kconfig
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@@ -137,6 +137,18 @@ config INPUT_EVBUG
To compile this driver as a module, choose M here: the
module will be called evbug.
config INPUT_APMPOWER
tristate "Input Power Event -> APM Bridge" if EMBEDDED
depends on INPUT && APM_EMULATION
---help---
Say Y here if you want suspend key events to trigger a user
requested suspend through APM. This is useful on embedded
systems where such behviour is desired without userspace
interaction. If unsure, say N.
To compile this driver as a module, choose M here: the
module will be called apm-power.
comment "Input Device Drivers"
source "drivers/input/keyboard/Kconfig"