| Shelley Chen | 9b230ae | 2023-09-15 16:01:31 -0700 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| 2 | |
| 3 | External (\_SB.PCI0.PEG0.PEGP.NPON, MethodObj) |
| 4 | External (\_SB.PCI0.PEG0.PEGP.NPOF, MethodObj) |
| 5 | |
| 6 | OperationRegion (PCIC, PCI_Config, 0x00, 0x100) |
| 7 | Field (PCIC, AnyAcc, NoLock, Preserve) |
| 8 | { |
| 9 | Offset (0x4a), |
| 10 | CEDR, 1, /* Correctable Error Detected, RW/1C/V */ |
| 11 | Offset (0x52), |
| 12 | , 13, |
| 13 | LASX, 1, /* Link Active Status */ |
| 14 | Offset (0x69), |
| 15 | , 2, |
| 16 | LREN, 1, /* LTR Enabled */ |
| 17 | Offset (0xe0), |
| 18 | , 7, |
| 19 | NCB7, 1, /* Scratch bit to save L2/3 state */ |
| 20 | Offset (0xe2), |
| 21 | , 2, |
| 22 | L23E, 1, /* L23_Rdy Entry request */ |
| 23 | L23R, 1 /* L23_Rdy Detect Transition */ |
| 24 | } |
| 25 | |
| 26 | /* L2/3 Entry sequence */ |
| 27 | Method (DL23, 0, Serialized) |
| 28 | { |
| 29 | L23E = 1 |
| 30 | Local0 = 8 |
| 31 | While (Local0 > 0) |
| 32 | { |
| 33 | If (!L23E) |
| 34 | { |
| 35 | Break |
| 36 | } |
| 37 | |
| 38 | Sleep (2) |
| 39 | Local0-- |
| 40 | } |
| 41 | NCB7 = 1 |
| 42 | } |
| 43 | |
| 44 | /* L2/3 exit seqeuence */ |
| 45 | Method (LD23, 0, Serialized) |
| 46 | { |
| 47 | If (!NCB7) |
| 48 | { |
| 49 | Return |
| 50 | } |
| 51 | |
| 52 | L23R = 1 |
| 53 | Local0 = 20 |
| 54 | While (Local0 > 0) |
| 55 | { |
| 56 | If (!L23R) |
| 57 | { |
| 58 | Break |
| 59 | } |
| 60 | |
| 61 | Sleep (2) |
| 62 | Local0-- |
| 63 | } |
| 64 | |
| 65 | NCB7 = 0 |
| 66 | Local0 = 8 |
| 67 | While (Local0 > 0) |
| 68 | { |
| 69 | If (LASX == 1) |
| 70 | { |
| 71 | Break |
| 72 | } |
| 73 | |
| 74 | Sleep (2) |
| 75 | Local0-- |
| 76 | } |
| 77 | } |
| 78 | |
| 79 | /* PEG Power Resource */ |
| 80 | PowerResource (PGPR, 0, 0) |
| 81 | { |
| 82 | Method (_ON, 0, Serialized) |
| 83 | { |
| 84 | /* Power up GPU from GCOFF (or GC6 exit if deferred) */ |
| 85 | \_SB.PCI0.PEG0.PEGP.NPON () |
| 86 | _STA = 1 |
| 87 | } |
| 88 | Method (_OFF, 0, Serialized) |
| 89 | { |
| 90 | /* Power down GPU to GCOFF (or GC6 entry if deferred) */ |
| 91 | _STA = 0 |
| 92 | \_SB.PCI0.PEG0.PEGP.NPOF () |
| 93 | } |
| 94 | Name (_STA, 0) |
| 95 | } |
| 96 | |
| 97 | Name (_PR0, Package() { PGPR }) |
| 98 | Name (_PR2, Package() { PGPR }) |
| 99 | Name (_PR3, Package() { PGPR }) |