diff options
Diffstat (limited to 'src/soc/intel/alderlake/acpi/pch_hda.asl')
| -rw-r--r-- | src/soc/intel/alderlake/acpi/pch_hda.asl | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/src/soc/intel/alderlake/acpi/pch_hda.asl b/src/soc/intel/alderlake/acpi/pch_hda.asl new file mode 100644 index 0000000000..13b4d3ddd0 --- /dev/null +++ b/src/soc/intel/alderlake/acpi/pch_hda.asl @@ -0,0 +1,68 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +/* 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 (Arg0 == ^UUID) { + /* + * Function 0: Function Support Query + * Returns a bitmask of functions supported. + */ + If (Arg2 == 0) { + /* + * NHLT Query only supported for revision 1 and + * if NHLT address and length are set in NVS. + */ + If ((Arg1 == 1) && (NHLA != 0) && (NHLL != 0)) { + 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 (Arg2 == 1) { + CreateQWordField (NBUF, ^NHLT._MIN, NBAS) + CreateQWordField (NBUF, ^NHLT._MAX, NMAS) + CreateQWordField (NBUF, ^NHLT._LEN, NLEN) + + NBAS = NHLA + NMAS = NHLA + NLEN = NHLL + + Return (NBUF) + } + } + + Return (Buffer (One) { 0x00 }) + } +} |