#!/bin/sh

# Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

# Always exit with 0
trap "exit 0" EXIT
set -e

for INTERFACE in "acpi_video0" "i915_backlight"; do
	BRIGHTNESS="/sys/class/backlight/${INTERFACE}/brightness"
	MAX_BRIGHTNESS="/sys/class/backlight/${INTERFACE}/max_brightness"
	[ ! -f "${BRIGHTNESS}" -o ! -f "${MAX_BRIGHTNESS}" ] && continue
	cp "${MAX_BRIGHTNESS}" "${BRIGHTNESS}"
	break
done