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path: root/src/ec/google/chromeec/acpi/keyboard_backlight.asl
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/*
 * This file is part of the coreboot project.
 *
 * Copyright (C) 2015 Google Inc.
 *
 * This program 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; version 2 of the License.
 *
 * This program 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.
 */

Scope (\_SB)
{
	/*
	 * Chrome EC Keyboard Backlight interface
	 */
	Device (KBLT)
	{
		Name (_HID, "GOOG0002")
		Name (_UID, 1)

		/* Read current backlight value */
		Method (KBQC, 0, NotSerialized)
		{
			Return (\_SB.PCI0.LPCB.EC0.KBLV)
		}

		/* Write new backlight value */
		Method (KBCM, 1, NotSerialized)
		{
			Store (Arg0, \_SB.PCI0.LPCB.EC0.KBLV)
		}
	}
}