| Simon Glass | c052918 | 2020-09-22 12:44:47 -0600 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | /* | ||||
| 3 | * Copyright (C) 2016 Intel Corp. | ||||
| 4 | */ | ||||
| 5 | |||||
| 6 | #define PCI_OSC_UUID "33DB4D5B-1FF7-401C-9657-7441C03DD766" | ||||
| 7 | |||||
| 8 | Scope (\_SB.PCI0) { | ||||
| 9 | Method (_OSC, 4) { | ||||
| 10 | /* Check for proper GUID */ | ||||
| 11 | If (LEqual (Arg0, ToUUID (PCI_OSC_UUID))) { | ||||
| 12 | /* Let OS control everything */ | ||||
| 13 | Return (Arg3) | ||||
| 14 | } Else { | ||||
| 15 | /* Unrecognized UUID */ | ||||
| 16 | CreateDWordField (Arg3, 0, CDW1) | ||||
| 17 | Or (CDW1, 4, CDW1) | ||||
| 18 | Return (Arg3) | ||||
| 19 | } | ||||
| 20 | } | ||||
| 21 | } | ||||