Raul E Rangel | dfe3a2f | 2021-04-16 12:16:55 -0600 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
| 2 | |
| 3 | #define PEPD_DSM_UUID "e3f32452-febc-43ce-9039-932122d37721" |
| 4 | #define PEPD_DSM_LPI_ENUM_FUNCTIONS 0 |
| 5 | #define PEPD_DSM_LPI_ADDITIONAL_FUNCTIONS 1 |
Elyes Haouas | 0ff941d | 2022-02-16 16:48:48 +0100 | [diff] [blame] | 6 | #define PEPD_DSM_LPI_GET_DEVICE_CONSTRAINTS 1 |
Raul E Rangel | dfe3a2f | 2021-04-16 12:16:55 -0600 | [diff] [blame] | 7 | |
Karthikeyan Ramasubramanian | e7f4350 | 2021-10-11 23:31:02 -0600 | [diff] [blame] | 8 | #define PEPD_DSM_NOTIFICATIONS_UUID "11e00d56-ce64-47ce-837b-1f898f9aa461" |
| 9 | #define PEPD_DSM_NOTIFICATION_ENUM_FUNCTIONS 0 |
| 10 | #define PEPD_DSM_NOTIFICATION_ADDITIONAL_FUNCTIONS 1 |
| 11 | #define PEPD_DSM_NOTIFICATION_LOW_POWER_ENTRY 5 |
| 12 | #define PEPD_DSM_NOTIFICATION_LOW_POWER_EXIT 6 |
| 13 | |
| 14 | External(\_SB.MS0X, MethodObj) |
Raul E Rangel | dfe3a2f | 2021-04-16 12:16:55 -0600 | [diff] [blame] | 15 | |
| 16 | /* |
| 17 | * Power Engine Plug-in Device |
| 18 | * |
| 19 | * References: |
| 20 | * * Intel Low Power S0 Idle |
| 21 | * * AMD Modern Standby BIOS Implementation Guide - #56358 |
| 22 | * * Linux Kernel: drivers/acpi/x86/s2idle.c |
| 23 | * * https://docs.microsoft.com/en-us/windows-hardware/design/device-experiences/modern-standby-firmware-notifications |
| 24 | */ |
| 25 | Scope (\_SB) { |
| 26 | Device (PEP) { |
| 27 | Name (_HID, "AMDI0005") |
| 28 | Name (_CID, EisaId ("PNP0D80")) |
Felix Singer | 7b8ac00 | 2022-12-26 08:45:56 +0100 | [diff] [blame^] | 29 | Name (_UID, 1) |
Raul E Rangel | dfe3a2f | 2021-04-16 12:16:55 -0600 | [diff] [blame] | 30 | |
| 31 | Method (_STA, 0, NotSerialized) { |
| 32 | Return (0x0F) |
| 33 | } |
| 34 | |
| 35 | /* |
| 36 | * Device constraints for low power states (may be used for debugging). |
| 37 | * For now there is only one disabled dummy device, because Windows |
| 38 | * expects at least one device and crashes without it with a bluescreen |
| 39 | * (`INTERNAL_POWER_ERROR`). Returning an empty package does not work. |
| 40 | */ |
| 41 | Name (DEVL, Package() { |
Pratik Vishwakarma | 35a4bfa | 2021-08-18 11:44:34 +0530 | [diff] [blame] | 42 | 0, |
| 43 | 1, /* Only 1 dummy device for now */ |
| 44 | |
Raul E Rangel | dfe3a2f | 2021-04-16 12:16:55 -0600 | [diff] [blame] | 45 | Package() { |
Pratik Vishwakarma | 35a4bfa | 2021-08-18 11:44:34 +0530 | [diff] [blame] | 46 | Package() { |
| 47 | 0, /* Disabled */ |
| 48 | "\\DUMY", /* \DUMY - not existent */ |
| 49 | 0, /* Function States */ |
| 50 | 0 /* Minimum D-state */ |
| 51 | } |
Raul E Rangel | dfe3a2f | 2021-04-16 12:16:55 -0600 | [diff] [blame] | 52 | } |
| 53 | }) |
| 54 | |
| 55 | /* |
| 56 | * PEPD_DSM_UUID Helper method |
| 57 | * |
| 58 | * Arg0: Function Index |
| 59 | */ |
| 60 | Method (DSM0, 1, Serialized) { |
| 61 | Switch (ToInteger(Arg0)) { |
| 62 | /* |
| 63 | * Return a bit field of the supported functions for |
| 64 | * this UUID. |
| 65 | */ |
| 66 | Case (PEPD_DSM_LPI_ENUM_FUNCTIONS) { |
| 67 | Local0 = Buffer { 0x00 } |
| 68 | CreateByteField(Local0, 0x00, SUPP) |
| 69 | |
| 70 | SUPP = PEPD_DSM_LPI_ADDITIONAL_FUNCTIONS |
| 71 | SUPP |= 1 << PEPD_DSM_LPI_GET_DEVICE_CONSTRAINTS |
| 72 | |
| 73 | Return (Local0) |
| 74 | } |
| 75 | Case (PEPD_DSM_LPI_GET_DEVICE_CONSTRAINTS) { |
| 76 | Return (DEVL) |
| 77 | } |
| 78 | Default { |
| 79 | /* Unknown function */ |
| 80 | Return (Buffer() { 0x00 }) |
| 81 | } |
| 82 | } |
| 83 | } |
| 84 | |
| 85 | /* |
| 86 | * PEPD_DSM_NOTIFICATIONS_UUID Helper method |
| 87 | * |
| 88 | * Arg0: Function Index |
| 89 | */ |
| 90 | Method (DSM1, 1, Serialized) { |
| 91 | Switch (ToInteger(Arg0)) { |
| 92 | /* |
| 93 | * Return a bit field of the supported functions for |
| 94 | * this UUID. |
| 95 | */ |
| 96 | Case (PEPD_DSM_NOTIFICATION_ENUM_FUNCTIONS) { |
Karthikeyan Ramasubramanian | e7f4350 | 2021-10-11 23:31:02 -0600 | [diff] [blame] | 97 | Local0 = Buffer { 0x00 } |
| 98 | CreateByteField(Local0, 0x00, SUPP) |
| 99 | |
| 100 | SUPP = PEPD_DSM_NOTIFICATION_ADDITIONAL_FUNCTIONS |
| 101 | SUPP |= 1 << PEPD_DSM_NOTIFICATION_LOW_POWER_ENTRY |
| 102 | SUPP |= 1 << PEPD_DSM_NOTIFICATION_LOW_POWER_EXIT |
| 103 | |
| 104 | Return (Local0) |
| 105 | } |
| 106 | Case (PEPD_DSM_NOTIFICATION_LOW_POWER_ENTRY) { |
| 107 | /* provide board level S0ix hook */ |
| 108 | If (CondRefOf (\_SB.MS0X)) { |
| 109 | \_SB.MS0X(1) |
| 110 | } |
| 111 | Return (Buffer() { 0x00 }) |
| 112 | } |
| 113 | Case (PEPD_DSM_NOTIFICATION_LOW_POWER_EXIT) { |
| 114 | /* provide board level S0ix hook */ |
| 115 | If (CondRefOf (\_SB.MS0X)) { |
| 116 | \_SB.MS0X(0) |
| 117 | } |
Raul E Rangel | dfe3a2f | 2021-04-16 12:16:55 -0600 | [diff] [blame] | 118 | Return (Buffer() { 0x00 }) |
| 119 | } |
| 120 | Default { |
| 121 | /* Unknown function */ |
| 122 | Return (Buffer() { 0x00 }) |
| 123 | } |
| 124 | } |
| 125 | } |
| 126 | |
| 127 | /* |
| 128 | * Device Specific Method |
| 129 | * |
| 130 | * Arg0: UUID |
| 131 | * Arg1: Revision Id |
| 132 | * Arg2: Function Index |
| 133 | */ |
| 134 | Method (_DSM, 4, Serialized) { |
| 135 | Switch (ToBuffer(Arg0)) { |
| 136 | Case (ToUUID(PEPD_DSM_UUID)) { |
| 137 | /* Unsupported Revision */ |
| 138 | If (ToInteger(Arg1) != 0) { |
| 139 | Return (Buffer() { 0x00 }) |
| 140 | } |
| 141 | |
| 142 | Return (DSM0(Arg2)) |
| 143 | } |
| 144 | Case (ToUUID(PEPD_DSM_NOTIFICATIONS_UUID)) { |
| 145 | /* Unsupported Revision */ |
| 146 | If (ToInteger(Arg1) != 0) { |
| 147 | Return (Buffer() { 0x00 }) |
| 148 | } |
| 149 | |
| 150 | Return (DSM1(Arg2)) |
| 151 | } |
| 152 | Default { |
| 153 | Return (Buffer { 0x00 }) |
| 154 | } |
| 155 | } |
| 156 | } |
| 157 | } |
| 158 | } |