126 lines
3.2 KiB
Groff
126 lines
3.2 KiB
Groff
.\"
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.\" Copyright (c) 2004 Philip Paeps <philip@FreeBSD.org>
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd April 22, 2004
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.Dt ACPI_ASUS 4 i386
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.Os
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.Sh NAME
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.Nm acpi_asus
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.Nd Asus Laptop Extras
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.Sh SYNOPSIS
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.Cd "device acpi_asus"
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.Sh DESCRIPTION
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The
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.Nm
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driver provides support for the extra ACPI-controlled gadgets, such as hotkeys
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and leds, found on recent Asus (and Medion) laptops.
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It allows one to use the
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.Xr sysctl 8
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interface to manipulate the brightness of the LCD panel and the display output
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state.
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Hotkey events are passed to
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.Xr devd 8
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for easy handling in userspace.
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.Pp
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Currently, the following laptops are fully supported:
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.Pp
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.Bl -item -offset indent -compact
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.It
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L2D
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.It
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L3C
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.It
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L3D
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.It
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L3H
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.It
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L8L
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.It
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M1A
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.It
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M2E
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.El
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.Sh SYSCTLS
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The following sysctls are currently implemented:
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.Bl -tag -width indent
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.It Va hw.acpi.asus.lcd_brightness
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Makes the LCD backlight brighter or dimmer (higher values are brighter).
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.It Va hw.acpi.asus.lcd_backlight
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Turns the LCD backlight on or off.
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.It Va hw.acpi.asus.video_output
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Sets the active display to use according to a bitwise OR of the following:
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.Pp
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.Bl -tag -width indent -compact
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.It Li 0
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No display
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.It Li 1
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LCD
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.It Li 2
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CRT
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.It Li 4
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TV-Out
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.El
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.Pp
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Some models also support video switching via the generic
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.Xr acpi_video 4
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driver.
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Most models do not, however.
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.El
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.Pp
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Defaults for these variables can be set in
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.Xr sysctl.conf 5 ,
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which is parsed at boot-time.
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.Sh SEE ALSO
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.Xr acpi 4 ,
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.Xr acpi_video 4 ,
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.Xr sysctl.conf 5 ,
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.Xr sysctl 8
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.Rs
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.%T The Acpi4Asus Project
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.%O http://sourceforge.net/projects/acpi4asus/
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.Re
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.Sh HISTORY
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The
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.Nm
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driver first appeared in
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.Fx 5.3 .
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.Sh AUTHORS
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.An -nosplit
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The
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.Nm
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driver and this manual page were written by
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.An Philip Paeps Aq philip@FreeBSD.org .
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.Pp
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Inspiration came from the
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.Em acpi4asus project
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started by
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.An Julien Lerouge
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which maintains a driver implementing this
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functionality in the
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.Tn Linux
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kernel.
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