| /* SPDX-License-Identifier: GPL-2.0-only */ |
| /* This file is part of the coreboot project. */ |
| |
| // Thermal Zone |
| |
| External (\PPKG, MethodObj) |
| |
| #define HAVE_THERMALZONE |
| Scope (\_TZ) |
| { |
| ThermalZone (THRM) |
| { |
| Name (_TC1, 0x02) |
| Name (_TC2, 0x05) |
| |
| // Thermal zone polling frequency: 10 seconds |
| Name (_TZP, 100) |
| |
| // Thermal sampling period for passive cooling: 2 seconds |
| Name (_TSP, 20) |
| |
| // Convert from Degrees C to 1/10 Kelvin for ACPI |
| Method (CTOK, 1) { |
| // 10th of Degrees C |
| Multiply (Arg0, 10, Local0) |
| |
| // Convert to Kelvin |
| Add (Local0, 2732, Local0) |
| |
| Return (Local0) |
| } |
| |
| // Threshold for OS to shutdown |
| Method (_CRT, 0, Serialized) |
| { |
| Return (CTOK (\TCRT)) |
| } |
| |
| // Threshold for passive cooling |
| Method (_PSV, 0, Serialized) |
| { |
| Return (CTOK (\TPSV)) |
| } |
| |
| // Processors used for passive cooling |
| Method (_PSL, 0, Serialized) |
| { |
| Return (\PPKG ()) |
| } |
| |
| Method (_TMP, 0, Serialized) |
| { |
| // Get CPU Temperature from EC |
| Store (\_SB.PCI0.LPCB.EC0.CTMP, Local0) |
| |
| // Convert to 1/10 Kelvin |
| Multiply (Local0, 10, Local0) |
| |
| // Adjust by offset to get Kelvin |
| Add (Local0, 2732, Local0) |
| |
| Return (Local0) |
| } |
| |
| // The EC does all fan control. There is no Active Cooling Fan control (_ACx). |
| } |
| } |