| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <amdblocks/alib.h> |
| |
| /* The ALIB method object is defined in an SSDT */ |
| External(\_SB.ALIB, MethodObj) |
| |
| /* Wrapper method that calls ALIB function 1 to report current AC/DC state. */ |
| Method (WAL1) |
| { |
| /* Send ALIB Function 1 the AC/DC state */ |
| Local0 = Buffer (0x03) {} |
| CreateWordField (Local0, 0, F1SZ) |
| CreateByteField (Local0, 2, F1DA) |
| |
| /* First argument is size i.e. 3 bytes */ |
| F1SZ = 3 |
| |
| /* |
| * Second argument is power state i.e. AC or DC. |
| * ALIB expects AC = 0, DC = 1. |
| * PWRS reports AC = 1, DC = 0. |
| * |
| * Hence, need to invert the state of PWRS. |
| */ |
| F1DA = \PWRS ^ 1 |
| |
| Printf ("ALIB call: func 1 params %o", Local0) |
| \_SB.ALIB (ALIB_FUNCTION_REPORT_AC_DC_STATE, Local0) |
| } |