Overlay/x11-drivers/displaylink-driver/files/pm-displaylink

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#!/usr/bin/env bash
# Copyright (c) 2015 - 2019 DisplayLink (UK) Ltd.
suspend_displaylink-driver()
{
#flush any bytes in pipe
while read -n 1 -t 1 SUSPEND_RESULT < /tmp/PmMessagesPort_out; do : ; done;
#suspend DisplayLinkManager
echo "S" > /tmp/PmMessagesPort_in
if [[ -p /tmp/PmMessagesPort_out ]]; then
#wait until suspend of DisplayLinkManager finish
read -n 1 -t 10 SUSPEND_RESULT < /tmp/PmMessagesPort_out
fi
}
resume_displaylink-driver()
{
#resume DisplayLinkManager
echo "R" > /tmp/PmMessagesPort_in
}
main_systemd()
{
case "$1/$2" in
pre/*)
suspend_displaylink-driver
;;
post/*)
resume_displaylink-driver
;;
esac
}
main_pm()
{
case "$1" in
suspend|hibernate)
suspend_displaylink-driver
;;
resume|thaw)
resume_displaylink-driver
;;
esac
true
}
DIR=$(cd "$(dirname "$0")" && pwd)
if [[ $DIR == *systemd* ]]; then
main_systemd "$@"
elif [[ $DIR == *pm* ]]; then
main_pm "$@"
fi