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ACPI / video: add description for brightness_switch_enabled

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Add description for video module's parameter brightness_switch_enabled
into kernel-parameters.txt.

Signed-off-by: Aaron Lu <aaron.lu@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Aaron Lu 2013-06-20 15:08:55 +08:00 committed by Rafael J. Wysocki
parent c76911bc6b
commit 3afe6dab86
1 changed files with 9 additions and 0 deletions
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9
Documentation/kernel-parameters.txt
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@ -3229,6 +3229,15 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
video= [FB] Frame buffer configuration
See Documentation/fb/modedb.txt.
video.brightness_switch_enabled= [0,1]
If set to 1, on receiving an ACPI notify event
generated by hotkey, video driver will adjust brightness
level and then send out the event to user space through
the allocated input device; If set to 0, video driver
will only send out the event without touching backlight
brightness level.
default: 1
virtio_mmio.device=
[VMMIO] Memory mapped virtio (platform) device.