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soulskater |
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#!/bin/bash
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#####################################################################
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# Simple script to catch the changes to backlight events on sony #
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# in combination with nvidia_bl. #
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# #
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# Tested with a Sony Vaio VPCCW1S1E Laptop. #
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# #
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# This has been tested on openSUSE 11.2 & 11.3 but should #
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# work on any distributions. #
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# #
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# Released under the BSDL Licens #
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# #
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# Developer: oSource Development #
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# DevTeam: Marcus Uddenhed #
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# Version: 0.3.5 #
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# #
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# Web: http://dev.osource.se/software/obacklight/ #
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# Rss: http://dev.osource.se/category/obacklight/feed/ #
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# #
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# Last Updated: 2010-07-05 22:27 #
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# #
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#####################################################################
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### BEGIN INIT INFO
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# Provides: oBacklight
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# Required-Start: $acpid
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# Required-Stop:
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# Default-Start: 5
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# Default-Stop: 0 1 2 3 6
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# Short-Description: Provides a backlight event handler for nvidia_bl
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# Description: Provides a backlight event handler for nvidia_bl.
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# Captures all backlight events from ACPI Events and feeds the to nvidia_bl.
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### END INIT INFO
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init() {
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# Default parameters
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BBL="2" # Default brightness level when on battery.
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SCB="sony" # Set which system ACPI is used.
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# Run 'sudo ls /sys/class/backlight' to determine your type.
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# Available options: sony
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DID="1" # The amount of steps to increase/decrease with on backlight changes.
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MBV="7" # Max brightness value possible on your system.
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# Set correct value in /sys/class/backlight/nvidia_backlight/brightness on startup
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echo "$MBV" > /sys/class/backlight/nvidia_backlight/brightness
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# Check if oBacklight.def exists
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if [ ! -e "/root/oBacklight.def" ]
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then
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echo "$MBV" > /root/oBacklight.def
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fi
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}
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start() {
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/etc/init.d/oBacklight run &
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}
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stop() {
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echo $(cat /sys/class/backlight/nvidia_backlight/brightness) > /root/oBacklight.def
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killall -r oBacklight
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}
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run() {
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if [ "$SCB" = "sony" ]
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then
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while [ exit != 130 ]
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do
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GVAR=$(cat /sys/class/backlight/nvidia_backlight/brightness)
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CMD=$(acpi_listen -c 1 | egrep -o " [0-9].+" | egrep -o "[0-9].+")
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# Brightness down acpi event
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if [ "$CMD" == "00000001 00000010" ]
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then
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if [ "$GVAR" -ge "$DID" ] # Thanks to damdim @ nvnews forum for this fix.
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then
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SVAR=$(($GVAR - $DID))
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echo $SVAR > /sys/class/backlight/nvidia_backlight/brightness
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echo $SVAR > /root/oBacklight.def
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else
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SVAR="0"
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echo $SVAR > /sys/class/backlight/nvidia_backlight/brightness
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echo $SVAR > /root/oBacklight.def
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fi
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fi
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# Brightness up acpi event
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if [ "$CMD" == "00000001 00000011" ]
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then
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if [ "$GVAR" -le $(($MBV-$DID)) ] # Thanks to damdim @ nvnews forum for this fix.
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then
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SVAR=$(($GVAR + $DID))
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echo $SVAR > /sys/class/backlight/nvidia_backlight/brightness
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echo $SVAR > /root/oBacklight.def
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else
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SVAR=$MBV
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echo $SVAR > /sys/class/backlight/nvidia_backlight/brightness
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echo $SVAR > /root/oBacklight.def
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fi
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fi
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# AC to battery change
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if [ "$CMD" == "00000081 00000000" ]
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then
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if [ "$GVAR" > "$BBL" ]
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then
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echo $BBL > /sys/class/backlight/nvidia_backlight/brightness
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echo $BBL > /root/oBacklight.def
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fi
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fi
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done
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fi
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}
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case $1 in
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start)
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start
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;;
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stop)
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stop
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;;
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run)
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init
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run
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;;
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*)
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echo "start|stop|run"
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;;
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esac
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