| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (c) 2011 Sven Schnelle <svens@stackframe.org> |
| * |
| * 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. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc. |
| */ |
| |
| #include "smi.h" |
| |
| Device (DSPC) |
| { |
| Name (_ADR, 0x00020001) |
| OperationRegion (DSPC, PCI_Config, 0x00, 0x100) |
| Field (DSPC, ByteAcc, NoLock, Preserve) |
| { |
| Offset (0xf4), |
| BRTC, 8 |
| } |
| |
| Method(BRTD, 0, NotSerialized) |
| { |
| Trap(SMI_BRIGHTNESS_DOWN) |
| Store(BRTC, Local0) |
| if (LGreater (Local0, 15)) |
| { |
| Subtract(Local0, 16, Local0) |
| Store(Local0, BRTC) |
| } |
| } |
| |
| Method(BRTU, 0, NotSerialized) |
| { |
| Trap(SMI_BRIGHTNESS_UP) |
| Store (BRTC, Local0) |
| if (LLess(Local0, 0xff)) |
| { |
| Add (Local0, 16, Local0) |
| Store(Local0, BRTC) |
| } |
| } |
| } |