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ACPI_FUJITSU(4) Device Drivers Manual 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.

AUTHORS

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>.

February 8, 2010 Linux 4.19.0-10-amd64