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| author | Luca Tettamanti <kronos.it@gmail.com> | 2012-08-02 17:30:27 +0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2012-09-20 21:10:36 +0400 |
| commit | 8a37c65df9dcbd1c891df2b4a94157999b654841 (patch) | |
| tree | 9e264f3648cfb9e7d9ee6ee4cfcd882a3755e519 /kernel | |
| parent | c49170742d6928b16fb3839b47a94cc41630dbe0 (diff) | |
| download | linux-8a37c65df9dcbd1c891df2b4a94157999b654841.tar.xz | |
ACPI video: allow events handlers to veto the keypress
The standard video events may be overloaded for device specific
purposes. For example AMD ACPI interface overloads
ACPI_VIDEO_NOTIFY_PROBE (0x81) to signal AMD-specific events. In such
cases we don't want to send the keypress (KEY_SWITCHVIDEOMODE) to the
userspace because the user did not press the mode switch key (the
spurious keypress confuses the DE which usually changes the
display configuration and messes up a dual-screen setup).
This patch gives the handlers the chance to examine the event and
block the keypress if the event is device specific.
v2: refactor as suggested by Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Luca Tettamanti <kronos.it@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'kernel')
0 files changed, 0 insertions, 0 deletions