#!/sbin/runscript
# Copyright 1999-2004 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $

opts="${opts} update"

depend() {
	need modules logger
	use acpid
}

check_battery() {
	local ac_file="/proc/acpi/ac_adapter/AC/state"

	if [ -e /proc/acpi/ac_adapter/AC0/state ] ; then
		ac_file="/proc/acpi/ac_adapter/AC0/state"
	fi

	if [ -n "$(grep on-line "${ac_file}")" ] 
	then
		SPEEDFREQ_SPEED="${SPEEDFREQ_SPEED_AC:-performance}"
	else
		SPEEDFREQ_SPEED="${SPEEDFREQ_SPEED_BATTERY:-powersave}"
	fi
}

start() {
	check_battery

	ebegin "Starting speedfreq"
	/usr/sbin/speedfreqd -P /var/run/speedfreq.pid -p ${SPEEDFREQ_SPEED:-dynamic} ${SPEEDFREQ_OPTS}
	eend $?
}

stop() {
	ebegin "Stopping speedfreq"

	# adapt to current system status for people that don't have 
	# speedfreq running all the time (e.g. different runlevels)
	update

	if [ -e /var/run/speedfreq.pid ] ; then
		local pid="$(</var/run/speedfreq.pid)"
		kill ${pid} >& /dev/null
		eend $? "Could not kill pid '${pid}'"
	else
		eend 1 "Lost pid file :("
	fi
}

update() {
	# should only be run when speedfreqd is started
	if [ ! -e /var/run/speedfreq.pid ] ; then
		exit 0
	fi

	check_battery
	/usr/bin/speedfreq -p ${SPEEDFREQ_SPEED}
}