#!/bin/bash
#
# PM-QA validation test suite for the power management on Linux
#
# Copyright (C) 2011, Linaro Limited.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
#
# Contributors:
#     Amit Daniel <amit.kachhap@linaro.org> (Samsung Electronics)
#       - initial API and implementation
#

# URL : https://wiki.linaro.org/WorkingGroups/PowerManagement/Doc/QA/Scripts#thermal_04

source ../include/functions.sh
source ../include/thermal_functions.sh
HEAT_CPU_MODERATE=../utils/heat_cpu
pid=0

heater_kill() {
    if [ $pid != 0 ]; then
	kill -9 $pid
    fi
}

verify_cooling_device_temp_change() {
    local dirpath=$THERMAL_PATH/$1
    local cdev_name=$1
    shift 1
    local tzonepath=$THERMAL_PATH/thermal_zone0
    test -d $tzonepath
    if [ $? -ne 0 ] ; then
	echo "No thermal zone present"
	return 1;
    fi
    local max_state=$(cat $dirpath/max_state)
    local prev_state_val=$(cat $dirpath/cur_state)
    local prev_mode_val=$(cat $tzonepath/mode)
    echo -n disabled > $tzonepath/mode

    local count=1
    local cur_state_val=0
    local init_temp=0
    local final_temp=0
    local cool_temp=0
    ./$HEAT_CPU_MODERATE moderate &
    pid=$!
    test $pid -eq 0 && return

    while (test $count -le $max_state); do
	echo 0 > $dirpath/cur_state
	sleep 5
	init_temp=$(cat $tzonepath/temp)

	echo $count > $dirpath/cur_state
	sleep 5
	final_temp=$(cat $tzonepath/temp)
	cool_temp=$(($init_temp - $final_temp))
	check "$cdev_name:state=$count effective cool=$cool_temp "\
					"test $cool_temp -ge 0"
	count=$((count+1))
    done
    heater_kill
    echo $prev_mode_val > $tzonepath/mode
    echo $prev_state_val > $dirpath/cur_state
}

trap "heater_kill; sigtrap" SIGHUP SIGINT SIGTERM

for_each_cooling_device verify_cooling_device_temp_change
test_status_show