#!/bin/sh
# acpid script for lid and power events
# by Ortwin Glueck

source /etc/acpi/power.conf

CONN=$(cat /proc/acpi/ac_adapter/ADP1/state | awk '{print $2}')
LID=$(cat /proc/acpi/button/lid/LID0/state | awk '{print $2}')

if [ "${LID}" = "open" ]; then
  # lid open
  if [ "${CONN}" = "on-line" ]; then
    # on AC
    LIGHT=${AC_LIGHT}
    P=${AC_P}
    T=${AC_T}
    C=${AC_CPU}
    GOV=${AC_GOV}
    GOV_MIN=${AC_GOV_MIN}
    GOV_MAX=${AC_GOV_MAX}
  else
    # on batteries
    LIGHT=${BAT_LIGHT}
    P=${BAT_P}
    T=${BAT_T}
    C=${BAT_CPU}
    GOV=${BAT_GOV}
    GOV_MIN=${BAT_GOV_MIN}
    GOV_MAX=${BAT_GOV_MAX}
  fi
else
  if [ "${LID_SUSPEND}" = "1" ]; then
   /usr/local/bin/mbps2ram &
   exit
  fi
  # lid closed
  LIGHT=${LID_LIGHT}
  P=${LID_P}
  T=${LID_T}
  C=${LID_CPU}
  GOV=${LID_GOV}
  GOV_MIN=${LID_GOV_MIN}
  GOV_MAX=${LID_GOV_MAX}
fi

# control backlight
/usr/bin/backlight ${LIGHT}

# power up/down second CPU
STATE=$(cat /sys/devices/system/cpu/cpu1/online)
if [ "${STATE}" != "${C}" ]; then
  echo ${C} > /sys/devices/system/cpu/cpu1/online
fi

# throttle CPUs and set governors
echo -n ${P}:${T} > /proc/acpi/processor/CPU0/limit
echo ${GOV} > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
# must first set max, then min!
echo ${GOV_MAX} > /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq
echo ${GOV_MIN} > /sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq
if [ "${C}" = "1" ]; then
  echo -n ${P}:${T} > /proc/acpi/processor/CPU1/limit
  echo ${GOV} > /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor
  # must first set max, then min!
  echo ${GOV_MAX} > /sys/devices/system/cpu/cpu1/cpufreq/scaling_max_freq
  echo ${GOV_MIN} > /sys/devices/system/cpu/cpu1/cpufreq/scaling_min_freq
fi