Nico Huber | efe1fed | 2013-04-29 18:00:57 +0200 | [diff] [blame] | 1 | /* |
| 2 | * This file is part of the coreboot project. |
| 3 | * |
| 4 | * Copyright (C) 2011 The Chromium OS Authors. All rights reserved. |
| 5 | * Copyright (C) 2013 secunet Security Networks AG |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; version 2 of the License. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
Nico Huber | efe1fed | 2013-04-29 18:00:57 +0200 | [diff] [blame] | 15 | */ |
| 16 | |
| 17 | // Thermal Zone |
| 18 | |
| 19 | Scope (\_TZ) |
| 20 | { |
| 21 | ThermalZone (THRM) |
| 22 | { |
| 23 | Name (_TC1, 0x02) |
| 24 | Name (_TC2, 0x05) |
| 25 | |
| 26 | // Thermal zone polling frequency: 10 seconds |
| 27 | Name (_TZP, 100) |
| 28 | |
| 29 | // Thermal sampling period for passive cooling: 2 seconds |
| 30 | Name (_TSP, 20) |
| 31 | |
| 32 | // Convert from Degrees C to 1/10 Kelvin for ACPI |
| 33 | Method (CTOK, 1) { |
| 34 | // 10th of Degrees C |
| 35 | Multiply (Arg0, 10, Local0) |
| 36 | |
| 37 | // Convert to Kelvin |
| 38 | Add (Local0, 2732, Local0) |
| 39 | |
| 40 | Return (Local0) |
| 41 | } |
| 42 | |
| 43 | // Threshold for OS to shutdown |
| 44 | Method (_CRT, 0, Serialized) |
| 45 | { |
| 46 | Return (CTOK (\TCRT)) |
| 47 | } |
| 48 | |
| 49 | // Threshold for passive cooling |
| 50 | Method (_PSV, 0, Serialized) |
| 51 | { |
| 52 | Return (CTOK (\TPSV)) |
| 53 | } |
| 54 | |
| 55 | // Processors used for passive cooling |
| 56 | Method (_PSL, 0, Serialized) |
| 57 | { |
| 58 | Return (\PPKG ()) |
| 59 | } |
| 60 | |
| 61 | Method (_TMP, 0, Serialized) |
| 62 | { |
| 63 | // Return CPU Temperature from EC |
| 64 | Return (\_SB.PCI0.LPCB.EC0.PM1.CTK ()) |
| 65 | } |
| 66 | |
| 67 | // The EC does all fan control. There is no Active Cooling Fan control (_ACx). |
| 68 | } |
| 69 | } |