| #!/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 |
