#!/bin/bash

[[ -x /usr/bin/cpupower ]] || exit $NA

CPUPOWER_GOVERNOR_AC=${CPUPOWER_GOVERNOR_AC:-ondemand}
CPUPOWER_GOVERNOR_BAT=${CPUPOWER_GOVERNOR_BAT:-conservative}

help() {
    cat <<EOF
--------
$0: Select cpupower frequency governor.

Parameters:
CPUPOWER_GOVERNOR_AC = Governor to use on AC.
Defaults to ondemand.

CPUPOWER_GOVERNOR_BAT = Governor to use on battery.
Defaults to conservative.

EOF
}

cpupow() {
  printf 'Setting cpupower frequency governor to %s...' "$1"
  cpupower -c all frequency-set -g "$1"
}

case $1 in
  true) cpupow "$CPUPOWER_GOVERNOR_BAT" ;;
  false) cpupow "$CPUPOWER_GOVERNOR_AC" ;;
  help) help;;
  *) exit $NA ;;
esac

exit 0

# vim:set ts=2 sw=2 ft=sh et: