acpi_fujitsu — Fujitsu Laptop Extras

       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>.

Debian                                          February 8, 2010                                 ACPI_FUJITSU(4)

       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.

       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

       The acpi_fujitsu driver first appeared in FreeBSD 5.4.

       acpi_fujitsu — Fujitsu Laptop Extras

acpi(4), sysctl.conf(5), devd(8), sysctl(8)

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

             deviceacpi_fujitsu

       Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5):

             acpi_fujitsu_load="YES"

       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).