diff options
| -rw-r--r-- | src/soc/amd/cezanne/acpi/soc.asl | 2 | ||||
| -rw-r--r-- | src/soc/amd/common/acpi/osc.asl | 22 |
2 files changed, 24 insertions, 0 deletions
diff --git a/src/soc/amd/cezanne/acpi/soc.asl b/src/soc/amd/cezanne/acpi/soc.asl index be511042e4..f7781dab2e 100644 --- a/src/soc/amd/cezanne/acpi/soc.asl +++ b/src/soc/amd/cezanne/acpi/soc.asl @@ -8,6 +8,8 @@ Scope(\_SB) { #include <soc/amd/common/acpi/gpio_bank_lib.asl> + #include <soc/amd/common/acpi/osc.asl> + #include "pci_int_defs.asl" #include "mmio.asl" diff --git a/src/soc/amd/common/acpi/osc.asl b/src/soc/amd/common/acpi/osc.asl new file mode 100644 index 0000000000..22175caa45 --- /dev/null +++ b/src/soc/amd/common/acpi/osc.asl @@ -0,0 +1,22 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include <acpi/acpi_osc.h> + +/* + * Platform-Wide _OSC Operating System Capabilities + * + * Arg0: A Buffer containing a UUID + * Arg1: An Integer containing a Revision ID of the buffer format + * Arg2: An Integer containing a count of entries in Arg3 + * Arg3: A Buffer containing a list of DWORD capabilities + */ +Method (_OSC, 4, NotSerialized) { + CreateDWordField (Arg3, 0, CDW1) + If (Arg0 == ToUUID (OSC_SB_UUID)) { + /* Don't mask any capability bits off. */ + Return (Arg3) + } Else { + CDW1 |= OSC_CDW1_UNRECOGNIZED_UUID + Return (Arg3) + } +} |