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#!/bin/bash

# SPDX-License-Identifier: CC0-1.0
# 2021 Aleksander Morgado <aleksander@aleksander.es>
#
# Foxconn SDX55 FCC unlock operation
#

# require program name and at least 2 arguments
[ $# -lt 2 ] && exit 1

# first argument is DBus path, not needed here
shift

# second and next arguments are control port names
for PORT in "$@"; do
  # match port type in Linux 5.14 and newer
  grep -q MBIM /sys/class/wwan/${PORT}/type 2>/dev/null && {
    MBIM_PORT=$PORT
    break
  }
  # match port name in Linux 5.13
  [[ $PORT == *"MBIM"* ]] && {
    MBIM_PORT=$PORT
    break
  }
done

# fail if no MBIM port exposed
[ -n "${MBIM_PORT}" ] || exit 2

# run qmicli operation over MBIM
qmicli --device-open-proxy --device=/dev/${MBIM_PORT} --dms-foxconn-set-fcc-authentication=0
exit $?