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| -rw-r--r-- | src/soc/intel/apollolake/acpi/pch_hda.asl | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/src/soc/intel/apollolake/acpi/pch_hda.asl b/src/soc/intel/apollolake/acpi/pch_hda.asl new file mode 100644 index 0000000000..33cd771a88 --- /dev/null +++ b/src/soc/intel/apollolake/acpi/pch_hda.asl @@ -0,0 +1,84 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2016 Intel Corporation. + * Copyright (C) 2016 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 14, Function 0 */ + +Device (HDAS) +{ + Name (_ADR, 0x000E0000) + 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, Cacheable, 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 }) + } +} |