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    ACPI video: allow events handlers to veto the keypress · 8a37c65d
    Luca Tettamanti 提交于
    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: NLuca Tettamanti <kronos.it@gmail.com>
    Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>
    8a37c65d
video.c 46.1 KB