#!/bin/sh

whoami=`whoami`
if [ "$whoami" != "root" ]; then
	echo "Must be ran as root.."
	logger $0 being ran by $whoami
	exit
fi

suspendstring="Suspending"
if [ "$1" != "" ]; then
	if [ "$1" == "hibernate" ]; then
		HIBERNATE=1
		suspendstring=Hibernating
	fi
fi

echo "$suspendstring in 5s, ^c to abort.."
logger -t Suspend $suspendstring `hostname`
sleep 5s

# Calls my sleeptime script, if you don't use it, comment this out.  Obviously
# you'll have to edit the path regardless.
/home/wally/bin/sleeptime sleep

# You could do special stuff here based on the lid, I decided not to but left
# the logic in.
lid=`grep closed /proc/acpi/button/lid/LID0/state`

if [ -z "$lid" ]; then
	echo "Lid open, suspending to ram.."
else
	echo "Lid closed, suspending to disk..  (er, not really, disabled)"
#	HIBERNATE=1
fi

# Edit this regardless, but this locks my KDE.
dcop --user wally --session .DCOPserver_rivendell__0 kdesktop KScreensaverIface lock

# discover video card's ID - This is another video workaround
ID=`lspci | grep VGA | awk '{ print $1 }' | sed -e 's@0000:@@' -e 's@:@/@'`

# securely create a temporary file
TMP_FILE=`mktemp /var/tmp/video_state.XXXXXX`
trap 'rm -f $TMP_FILE' 0 1 15

cat /proc/bus/pci/$ID > $TMP_FILE

# These modules give me problems or need to be restarted anyway.

echo "Stopping network and cpuspeed.."
service network stop
#service cpuspeed stop
service wpa_supplicant stop

# Kill ipw3945d, it gives problems if it's loaded
echo "Killing 3495 drivers.."
ipw3945d --kill
service ipw3945 stop

# Remove modules, these give me problems if they're still there.
echo "Removing modules.."
rmmod uhci_hcd
rmmod ehci_hcd
rmmod ipw3945
rmmod ieee80211
rmmod sdhci
rmmod mmc_core
#rmmod thermal

# Save clock
/sbin/hwclock --systohc

sync

# Change to VT1 (console)  This is a workaround for a video issue I think.
chvt 1

# Debugging/informative stuff..
date
acpitool

sleep 1s

# Suspend to ram

if [ "$HIBERNATE" == "1" ]; then
	echo "Hibernating.."
	echo disk > /sys/power/state
else
	echo "Suspending.."
	echo mem > /sys/power/state
fi

# This is where we come back to life, script picks up from here on the way back out
echo "Resuming.."

# Again, info/debugging
acpitool
date

# Reload the modules and such that we unloaded earlier
/sbin/hwclock --hctosys
echo "Loading modules.."
modprobe uhci_hcd
modprobe ehci_hcd
modprobe ipw3945
modprobe ieee80211
modprobe sdhci
modprobe mmc_core
#modprobe thermal


# Restore the video workaround stuff we did earlier..
cat $TMP_FILE > /proc/bus/pci/$ID
rm -f $TMP_FILE

# Restart the services we stopped earlier..
echo "Restarting network and cpuspeed.."
service ipw3945 start
service network start
#service cpuspeed start

# Restart wpa_supplicant last, delayed a bit, otherwise it sometimes fails.
sleep 2s
service wpa_supplicant start

# Change back to X, yes, we're going to X, console, and back to X.  Otherwise
# there are sometimes problems here..
sleep 1s
chvt 7
chvt 1
chvt 7

# Sleeptime stuff here, edit or remove
/home/wally/bin/sleeptime resume
logger -t Suspend `/home/wally/bin/sleeptime sleeptime`

# Informative stuff..
logger -t Suspend Resumed `hostname` from suspension

# More sleeptime stuff here..  This puts a cute message on my screen after everything
# is back to working so I can see how long the laptop waa asleep.
sleep 10s
dcop --user wally --session .DCOPserver_rivendell__0 knotify default notify eventname "Awake again" "`/home/wally/bin/sleeptime sleeptime`" '' '' 17 0