acpi_fujitsu (4)

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Copyright (c) 2005 Philip Paeps <philip@FreeBSD.org>
All rights reserved.

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modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
   notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
   notice, this list of conditions and the following disclaimer in the
   docum...

(The comments found at the beginning of the groff file "man4/acpi_fujitsu.4freebsd".)

NAME

acpi_fujitsu - Fujitsu Laptop Extras

SYNOPSIS

To compile this driver into the kernel, place the following line in your kernel configuration file:

device acpi_fujitsu

Alternatively, to load the driver as a module at boot time, place the following line in loader.conf5:

acpi_fujitsu_load="YES"

DESCRIPTION

The driver enables the ACPI-controlled buttons on Fujitsu notebooks. The button events are sent to userspace via devd(8), and a sysctl(8) interface is provided to simulate the hardware events.

Using this driver, one can control the brightness of the display, the volume of the speakers, and the internal (eraserhead) mouse pointer.

SYSCTL VARIABLES

These sysctls are currently implemented:

hw.acpi.fujitsu.lcd_brightness

Makes the LCD backlight brighter or dimmer.

hw.acpi.fujitsu.pointer_enable

Enables or disables the internal mouse pointer.

hw.acpi.fujitsu.volume

Controls the speaker volume.

hw.acpi.fujitsu.mute

Mutes the speakers.

Defaults for these sysctls can be set in sysctl.conf5.

EXAMPLES

The following can be added to devd.conf5 in order to pass button events to a /usr/local/sbin/acpi_oem_exec.sh script:

notify 10 {
        match "system"          "ACPI";
        match "subsystem"       "FUJITSU";
        action "/usr/local/sbin/acpi_oem_exec.sh $notify fujitsu";
};

A possible /usr/local/sbin/acpi_oem_exec.sh script might look like:

#!/bin/sh
#
if [ "$1" = "" -o "$2" = "" ]
then
        echo "usage: $0 notify oem_name"
        exit 1
fi
NOTIFY=`echo $1`
LOGGER="logger"
CALC="bc"
BC_PRECOMMANDS="scale=2"
ECHO="echo"
CUT="cut"
MAX_LCD_BRIGHTNESS=7
MAX_VOLUME=16
OEM=$2
DISPLAY_PIPE=/tmp/acpi_${OEM}_display

case ${NOTIFY} in
        0x00)
                LEVEL=`sysctl -n hw.acpi.${OEM}.mute`
                if [ "$LEVEL" = "1" ]
                then
                        MESSAGE="volume muted"
                else
                        MESSAGE="volume unmuted"
                fi
                ;;
        0x01)
                LEVEL=`sysctl -n hw.acpi.${OEM}.pointer_enable`
                if [ "$LEVEL" = "1" ]
                then
                        MESSAGE="pointer enabled"
                else
                        MESSAGE="pointer disabled"
                fi
                ;;
        0x02)
                LEVEL=`sysctl -n hw.acpi.${OEM}.lcd_brightness`
                PERCENT=`${ECHO} "${BC_PRECOMMANDS} ; \
                         ${LEVEL} / ${MAX_LCD_BRIGHTNESS} * 100" |\
                         ${CALC} | ${CUT} -d . -f 1`
                MESSAGE="brightness level ${PERCENT}%"
                ;;
        0x03)
                LEVEL=`sysctl -n hw.acpi.${OEM}.volume`
                PERCENT=`${ECHO} "${BC_PRECOMMANDS} ; \
                        ${LEVEL} / ${MAX_VOLUME} * 100" | \
                         ${CALC} | ${CUT} -d . -f 1`
                MESSAGE="volume level ${PERCENT}%"
                ;;
        *)
                ;;
        esac
        ${LOGGER} ${MESSAGE}
        if [ -p ${DISPLAY_PIPE} ]
        then
                ${ECHO} ${MESSAGE} >> ${DISPLAY_PIPE} &
        fi
exit 0

SEE ALSO

acpi(4), sysctl.conf5, devd(8), sysctl(8)

HISTORY

The driver first appeared in Fx 5.4 .

AUTHORS

An -nosplit The driver was written by An Sean Bullington Aq shegget@gmail.com , An Anish Mistry Aq mistry.7@osu.edu , and An Marc Santcroos Aq marks@ripe.net .

This manual page was written by An Philip Paeps Aq philip@FreeBSD.org .