apple/t2: init

Co-authored-by: networkException <git@nwex.de>

apple/t2/fix-keyboard-backlight-and-touchbar.sh

@@ -0,0 +1,28 @@
+#!/bin/sh
+
+set -eux
+
+unload () {
+  if modprobe -r "$1" 2>&1;
+  then echo ok
+  else echo fail
+  fi
+}
+
+wait_unload() {
+  while sleep 1; do
+    output="$(unload "$1")"
+    case "$output" in
+      *is\ in\ use*) :;;
+      *ok*) return 0;;
+      *) echo "modprobe said: $output"; echo giving up; return 1;
+    esac
+  done
+}
+
+wait_unload apple_touchbar
+modprobe apple_touchbar
+
+# After suspend, the inode for the backlight device has changed. This service
+# simply restarts upower to inform it of that change.
+systemctl restart upower.service