#!/bin/bash
#
# /etc/acpi/action.sh (2004.01.17)
# called by acpid for all events
# Christopher Knoerle <cknoerle@gmx.net>
# Tomasz Sterna <tomek@xiaoka.com> for Compaq TC1000
#

# This works with gentoo-sources, ac-sources, mm-sources on my
# HP Compaq nx9000 Laptop. For more information have a look at
# http://cknoerle.homelinux.org/nx9000/

# The latest version is available from
# http://cknoerle.homelinux.org/nx9000/stuff/acpi/

# This should be placed in /etc/acpi/action.sh and should be called by acpid.
# To make this happen you need the acpid installed and running.
# acpid can be obtained from http://acpid.sourceforge.net
# For this to work you need only one event handler in /etc/acpi/event
# It should contain something like the following:
#
# event=.*
# action=/etc/acpi/action.sh %e

# Modified to work on my Compaq TC1000
# For more information see


# let's set some paths
LOGGER="/usr/bin/logger -t acpid" # logs to syslog - an echo logs to /var/log/acpid
XGAMMA="/usr/X11R6/bin/xgamma"
XSET="/usr/X11R6/bin/xset"
HDPARM="/sbin/hdparm"
LONGRUN="/usr/sbin/longrun"
SCALING_GOVERNOR="/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor"
BATTERY="CMB0"
AC_ADAPTER="AC"
BAT_STATE="/proc/acpi/battery/$BATTERY/state"
BAT_INFO="/proc/acpi/battery/$BATTERY/info"
BAT_ALARM="/proc/acpi/battery/$BATTERY/alarm"
BAT_ALR=`awk '/warning/ { print $4 }' $BAT_INFO 2>/dev/null || echo "300"`
BAT_LOW=`awk '/low/ { print $4 }' $BAT_INFO 2>/dev/null || echo "150"`
AC_STATE="/proc/acpi/ac_adapter/$AC_ADAPTER/state"


# if we didn't know about an event
# log to /var/log/acpid to do something like 'grep #### /var/log/acpid' :-)
no_action ()
{
   echo "#### NO ACTION FOR EVENT: $*"
   exit 1
}


# AC Adapter plugged in
acad_in ()
{
   $LOGGER "AC Adapter plugged IN"

   #if ps -A | grep -q X
   #then
   #   $XGAMMA -d :0.0 -gamma 1.0 # set gamma in X to 100%
   #   $XSET -d :0.0 dpms 0 0 600 # shutdown display after 600s
   #fi
   $LONGRUN -f performance # select performance longrun profile
   echo -n performance > $SCALING_GOVERNOR # set performance cpufreq profile
   swapon -a  # enable all swap
   $HDPARM -S 240 /dev/hda > /dev/null 2>&1 # spindown after 20min
   $HDPARM -B 255 /dev/hda > /dev/null 2>&1 # disable drive's APM
}


# AC Adapter plugged out
acad_out ()
{
   $LOGGER "AC Adapter plugged OUT"

   #if ps -A | grep -q X
   #then
   #   $XGAMMA -d :0.0 -gamma 0.7 # set gamma in X to 70%
   #   $XSET -d :0.0 dpms 0 0 120 # shutdown display after 120s
   #fi
   $LONGRUN -f economy # select economy longrun profile
   echo -n powersave > $SCALING_GOVERNOR # set powersaving cpufreq profile
   swapoff -a  # disable all swap to decrease disk activity
   $HDPARM -S 4 /dev/hda > /dev/null 2>&1 # spindown after 20s
   $HDPARM -B 1 /dev/hda > /dev/null 2>&1 # enable drives's APM
}


# state of battery changed
# shutdown if battery capacity is low
battery ()
{
   if grep -q discharging $BAT_STATE >/dev/null 2>&1
   then
      if ((`awk '/remaining/ { print $3 }' $BAT_STATE` < $BAT_LOW))
      then
         $LOGGER "battery capacity critically low"
         btn_pwr
      elif ((`awk '/remaining/ { print $3 }' $BAT_STATE` < $BAT_ALR))
      then
         $LOGGER "battery capacity less than $BAT_ALR mWh"
         #echo $BAT_LOW > $BAT_ALARM
         # start beep'ing with delay 5 sec
         #$BEEP -f 1500 -r 100 -d 5000 &
         echo "MEEEP! MEEEEP!"
      fi
   fi
}


# powerbutton pressed
# if kde is running try to show dialog - else shutdown immediately
btn_pwr ()
{
   $LOGGER "Powerbutton pressed"

   if test -f $KDEDIR/bin/dcop && $KDEDIR/bin/dcop kdesktop > /dev/null 2>&1
   then
      $LOGGER "KDE running: asking user what to do"
      dcop --all-sessions ksmserver ksmserver logout 1 2 0 && exit 0
   else
      $LOGGER "shutdown initiated"
      /sbin/init 0
   fi
}


# system startup
system_startup ()
{
    #test for ac
    if grep -q 'off-line' "$AC_STATE"
    then
        acad_out
    else
        acad_in
    fi
}

# let's see which event occured and what action to take :-)
# have a look at /var/log/acpid to see what your events look like
# and adjust accordingly
case "$*" in
   ac_adapter\ $AC_ADAPTER\ 00000080\ 00000000)
      acad_out
   ;;
   ac_adapter\ $AC_ADAPTER\ 00000080\ 00000001)
      acad_in
   ;;
   battery\ $BATTERY\ 00000080\ 00000001)
      battery
   ;;
   button?power\ PWRF\ 00000080\ ????????)
   # the last eight digits count the times the button was pressed
      btn_pwr
   ;;
   startup)
   # system startup
      system_startup
   ;;
   *)
      no_action
   ;;
esac

# EOF