From ab53910278f76fd9e3e3127708360a42c59fc512 Mon Sep 17 00:00:00 2001
From: dakkar <dakkar@thenautilus.net>
Date: Fri, 5 Jul 2019 12:17:54 +0100
Subject: probably-working displaylink driver

upgraded from
https://git.hossie.de/projects/GEN/repos/gentoo-overlay/browse/x11-drivers/
which was inspired by
https://aur.archlinux.org/cgit/aur.git/tree/?h=displaylink
---
 .../files/pm-systemd-displaylink                   | 31 ++++++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100644 x11-drivers/displaylink-driver/files/pm-systemd-displaylink

(limited to 'x11-drivers/displaylink-driver/files/pm-systemd-displaylink')

diff --git a/x11-drivers/displaylink-driver/files/pm-systemd-displaylink b/x11-drivers/displaylink-driver/files/pm-systemd-displaylink
new file mode 100644
index 0000000..4705b7f
--- /dev/null
+++ b/x11-drivers/displaylink-driver/files/pm-systemd-displaylink
@@ -0,0 +1,31 @@
+#!/bin/bash
+# Copyright (c) 2015 - 2016 DisplayLink (UK) Ltd.
+
+suspend_dlm()
+{
+  #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 [ -f /tmp/PmMessagesPort_out ]; then
+    #wait until suspend of DisplayLinkManager finish
+    read -n 1 -t 10 SUSPEND_RESULT < /tmp/PmMessagesPort_out
+  fi
+}
+
+resume_dlm()
+{
+  #resume DisplayLinkManager
+  echo "R" > /tmp/PmMessagesPort_in
+}
+
+case "$1/$2" in
+  pre/*)
+    suspend_dlm
+    ;;
+  post/*)
+    resume_dlm
+    ;;
+esac
-- 
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