system76-thunderbolt-reload

#!/bin/sh

# system76-driver: Universal driver for System76 computers
# Copyright (C) 2005-2019 System76, Inc.
#
# This file is part of `system76-driver`.
#
# `system76-driver` is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# `system76-driver` is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with `system76-driver`; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

# This script removes the thunderbolt PCI bridge on suspend and rescans it
# on resume in order to prevent hangs on resume.

set -e

case "$(cat /sys/class/dmi/id/product_version)" in
    darp6 | galp4)
        case "$2" in
            suspend | hybrid-sleep)
                case "$1" in
                    pre)
                        echo 1 > '/sys/devices/pci0000:00/0000:00:1c.0/remove'
                        ;;
                    post)
                        echo 1 > '/sys/devices/pci0000:00/0000:00:00.0/rescan'
                        ;;
                esac
                ;;
        esac
        ;;
esac