freebsd man page for acpi_fujitsu

ACPI_FUJITSU(4) 					   BSD Kernel Interfaces 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>.

BSD
								 February 8, 2010							       BSD