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/*
* 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 })
}
}
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