179 lines
4.9 KiB
Groff
179 lines
4.9 KiB
Groff
.\"
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.\" Copyright (c) 2004 OGAWA Takaya <t-ogawa@triaez.kaisei.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 February 25, 2012
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.Dt ACPI_PANASONIC 4
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.Os
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.Sh NAME
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.Nm acpi_panasonic
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.Nd "ACPI hotkey driver for Panasonic laptops"
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.Sh SYNOPSIS
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To compile this driver into the kernel,
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place the following line in your
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kernel configuration file:
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.Bd -ragged -offset indent
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.Cd "device acpi_panasonic"
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.Ed
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.Pp
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Alternatively, to load the driver as a
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module at boot time, place the following line in
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.Xr loader.conf 5 :
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.Bd -literal -offset indent
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acpi_panasonic_load="YES"
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.Ed
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.Sh DESCRIPTION
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The
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.Nm
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driver enables such hotkey facilities of various Panasonic laptops as
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changing LCD brightness, controlling mixer volumes, entering sleep or
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suspended state and so on.
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On the following models it is reported to work: Let's note (or
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Toughbook, outside Japan) CF-R1N, CF-R2A and CF-R3.
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It may also work on other models as well.
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.Pp
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The driver consists of three functionalities.
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The first is to detect hotkey events and take corresponding actions,
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which include changing LCD luminance and speaker mute state.
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The second role is to notify occurrences of the event by way of
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.Xr devctl 4
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and eventually to
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.Xr devd 8 .
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The third and last is to provide a way to adjust LCD brightness and
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sound mute state via
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.Xr sysctl 8 .
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.Ss Hotkeys
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There are 9 hotkeys available on the supported hardware:
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.Pp
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.Bl -tag -compact -offset indent
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.It Sy Fn+F1
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Make LCD backlight darker.
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.It Sy Fn+F2
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Make LCD backlight brighter.
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.It Sy Fn+F3
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Switch video output between LCD and CRT.
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Not supported by the
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.Nm
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driver.
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.It Sy Fn+F4
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Toggle muting the speaker.
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.It Sy Fn+F5
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Turn the mixer volume down.
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.It Sy Fn+F6
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Turn the mixer volume up.
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.It Sy Fn+F7
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Enter suspend-to-RAM state.
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.It Sy Fn+F9
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Show battery status.
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.It Sy Fn+F10
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Enter suspend-to-disk state.
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.El
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.Pp
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Actions are automatically taken within the driver for
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.Sy Fn+F1 , Fn+F2
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and
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.Sy Fn+F4 .
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For the other events such as
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mixer control and showing battery status,
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.Xr devd 8
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should take the role as described below.
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.Ss Xr devd 8 Ss Events
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When notified to
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.Xr devd 8 ,
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the hotkey event provides the following information:
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.Pp
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.Bl -tag -compact -offset indent
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.It system
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.Qq Li ACPI
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.It subsystem
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.Qq Li Panasonic
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.It type
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The source of the event in ACPI namespace.
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The value depends on the model but typically
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.Qq Li \e_SB_.HKEY .
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.It notify
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Event code (see below).
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.El
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.Pp
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Event codes to be generated are assigned as follows:
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.Bl -tag -offset indent
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.It 0x81-0x86, 0x89
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.Sy Fn+F<n>
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pressed.
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0x81 corresponds to
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.Sy Fn+F1 ,
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0x82 corresponds to
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.Sy Fn+F2 ,
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and so on.
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.It 0x01-0x07, 0x09, 0x1a
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.Sy Fn+F<n>
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released.
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0x01 corresponds to
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.Sy Fn+F1 ,
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0x02 corresponds to
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.Sy Fn+F2 ,
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and so on.
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.El
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.Sh SYSCTL VARIABLES
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The following MIBs are available:
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.Bl -tag -width indent
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.It Va hw.acpi.panasonic.lcd_brightness_max
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The maximum level of brightness.
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The value is read only and
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automatically set according to hardware model.
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.It Va hw.acpi.panasonic.lcd_brightness_min
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The minimum level of brightness.
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The value is read only and
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automatically set according to hardware model.
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.It Va hw.acpi.panasonic.lcd_brightness
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Current brightness level of the LCD (read-write).
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The value ranges from
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.Va hw.acpi.panasonic.lcd_brightness_min
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to
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.Va hw.acpi.panasonic.lcd_brightness_max .
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.It Va hw.acpi.panasonic.sound_mute
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A read-write boolean flag to control whether to mute the speaker.
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The value 1 means to mute and 0 not.
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.El
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.Sh SEE ALSO
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.Xr acpi 4 ,
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.Xr devd.conf 5 ,
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.Xr devd 8 ,
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.Xr sysctl 8
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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 OGAWA Takaya Aq t\-ogawa@triaez.kaisei.org
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and
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.An TAKAHASHI Yoshihiro Aq nyan@FreeBSD.org .
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