00-backlight-on

GPE内核镜像文件 已在qemu上跑过的

#! /bin/sh
#
# Copyright Matthias Hentges <[e-mail]> (c) 2006
# License: GPL (see http://www.gnu.org/licenses/gpl.txt for a copy of the license)
#
# Filename: zaurus-hinge.bl-on
# Date: 04-Jun-06

test -z "${ZD_BINDIR}" && ZD_BINDIR="/usr/bin"
test -x ${ZD_BINDIR}/bl && ${ZD_BINDIR}/bl on


BL="fakeBl"

fakeBl() {

	
	case "$1" in
	on)	test -n "$2" && echo "$2" > "$BL_DRIVER" ;;
	"")	echo "on `cat "$BL_DRIVER"`";;	
	*)	echo "$1" > "$BL_DRIVER" ;;
	esac
	
}

for dir in `ls -1 /sys/class/backlight/`
do
	if test -e /sys/class/backlight/$dir/brightness
	then
		echo "Using [$dir] backlight driver"
		BL_DRIVER="/sys/class/backlight/$dir/brightness"
		break
	fi
done


echo "### `$BL` ###"
( if test "`$BL | awk '{print $2}'`" = "0"
then

	$BL 20

	if mkdir /var/run/display_brightness.lock
	then
		if test -e /var/run/display_brightness.tmp
		then
			OLD_VALUE="`cat /var/run/display_brightness.tmp`"
			echo "OLD BRIGHTNESS SETTING FOUND: $OLD_VALUE"

			if test "$OLD_VALUE" -gt 1
			then
				echo "SETTING $OLD_VALUE!"
				$BL "$OLD_VALUE"
				rm /var/run/display_brightness.tmp
				echo "FINISH!"
			fi
		fi
		rm -rf /var/run/display_brightness.lock
	else
		echo "BRIGHTNESS IS LOCKED"
	fi
fi ) &