| /* 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) |
| } |
| } |