ACPI_FUJITSU(4)

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.conf(5):

    acpi_fujitsu_load="YES"

DESCRIPTION
The acpi_fujitsu 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.conf(5).

EXAMPLES
The following can be added to devd.conf(5) 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.conf(5), devd(8), sysctl(8)

HISTORY
The acpi_fujitsu driver first appeared in FreeBSD 5.4. It was then ported to DragonFly 2.5.

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

This manual page was written by Philip Paeps <philip@FreeBSD.org>.