| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2015 Intel Corporation. |
| * 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. |
| */ |
| |
| /* Audio Controller - Device 31, Function 3 */ |
| |
| Device (HDAS) |
| { |
| Name (_ADR, 0x001F0003) |
| Name (_DDN, "Audio Controller") |
| Name (UUID, ToUUID ("A69F886E-6CEB-4594-A41F-7B5DCE24C553")) |
| |
| /* Device is D3 wake capable */ |
| Name (_S0W, 3) |
| |
| /* NHLT Table Address populated from GNVS values */ |
| Name (NBUF, ResourceTemplate () { |
| QWordMemory (ResourceConsumer, PosDecode, MinFixed, |
| MaxFixed, NonCacheable, ReadOnly, |
| 0, 0, 0, 0, 1,,, NHLT, AddressRangeACPI) |
| }) |
| |
| /* |
| * Device Specific Method |
| * Arg0 - UUID |
| * Arg1 - Revision |
| * Arg2 - Function Index |
| */ |
| Method (_DSM, 4) |
| { |
| If (LEqual (Arg0, ^UUID)) { |
| /* |
| * Function 0: Function Support Query |
| * Returns a bitmask of functions supported. |
| */ |
| If (LEqual (Arg2, Zero)) { |
| /* |
| * NHLT Query only supported for revision 1 and |
| * if NHLT address and length are set in NVS. |
| */ |
| If (LAnd (LEqual (Arg1, One), |
| LAnd (LNotEqual (NHLA, Zero), |
| LNotEqual (NHLL, Zero)))) { |
| Return (Buffer (One) { 0x03 }) |
| } Else { |
| Return (Buffer (One) { 0x01 }) |
| } |
| } |
| |
| /* |
| * Function 1: Query NHLT memory address used by |
| * Intel Offload Engine Driver to discover any non-HDA |
| * devices that are supported by the DSP. |
| * |
| * Returns a pointer to NHLT table in memory. |
| */ |
| If (LEqual (Arg2, One)) { |
| CreateQWordField (NBUF, ^NHLT._MIN, NBAS) |
| CreateQWordField (NBUF, ^NHLT._MAX, NMAS) |
| CreateQWordField (NBUF, ^NHLT._LEN, NLEN) |
| |
| Store (NHLA, NBAS) |
| Store (NHLA, NMAS) |
| Store (NHLL, NLEN) |
| |
| Return (NBUF) |
| } |
| } |
| |
| Return (Buffer (One) { 0x00 }) |
| } |
| } |
