#!/bin/sh

# Problems may occur mainly with scsi-pcmcia-cards on the cardbus. Use
# RESTART_PCMCIA="yes" to stop the whole pcmcia-subsystem on a suspend and
# to start it again after a resume. This can slow down suspend and resume
# process.
# Use PCMCIA_TIMEOUT in order to set up the PCMCIA timeout.
# Some BIOSes are too buggy to handle cardctl suspend and cardctl resume
# properly, in these cases cardctl eject and cardctl insert can be used instead.
# However, this actually ejects the card on hardware supporting it, so if
# the BIOS isn't buggy, it shouldn't be used. Set PCMCIA_BIOS_BUG to yes if
# you are experiencing problems with PCMCIA cards after a resume.
# Since buggy BIOSes seem to be far more common than hardware that can eject
# PCMCIA cards (and it doesn't make a difference on systems that don't have
# either), it is enabled by default.
# If PCMCIA_BIOS_BUG is set to yes,PCMCIA_WAIT can be set to wait with the
# suspend until the pccard is removed from the system.

# RESTART_PCMCIA="yes"
# PCMCIA_BIOS_BUG="yes"
# PCMCIA_WAIT="yes"
# PCMCIA_TIMEOUT="10"

. "${PM_FUNCTIONS}"


CARDCTL=/sbin/pccardctl

suspend_pcmcia() {
    if [ "$PCMCIA_BIOS_BUG" == "yes" ];then
	$CARDCTL eject
	if [ "$PCMCIA_WAIT" == "yes" ]; then
	    wait_for_cards_removal
	fi
    else
	$CARDCTL suspend
    fi
}

test_cards_present () {
    local c
    for c in /sys/class/pcmcia_socket/*/card_type; do
	cat $c > /dev/null 2>&1 && return 0
    done
    return 1
}

wait_for_cards_removal() {
    while test_cards_present; do
	logger "Waiting for pcmcia-device to be removed..."
	sleep $PCMCIA_TIMEOUT
    done
}

resume_pcmcia() {
    if [ "$PCMCIA_BIOS_BUG" == "yes" ]; then
	$CARDCTL insert
    else
	$CARDCTL resume
    fi
}

case "$1" in
	hibernate|suspend)
		if [ "$RESTART_PCMCIA" == "yes" ]; then
			suspend_pcmcia
		fi
		;;
	thaw|resume)
		if [ "$RESTART_PCMCIA" == "yes" ]; then
			resume_pcmcia
		fi
		;;
	*)
		;;
esac

exit $?