Add dGPU disabling guide

extra-files/SSDT-GPI0.dsl

@@ -9,5 +9,8 @@ DefinitionBlock("", "SSDT", 2, "Slav", "GPI0", 0)
         {
             GPEN = One
         }
+        Else
+        {
+        }
     }
 }

extra-files/SSDT-GPU-SPOOF.dsl

@@ -35,7 +35,6 @@ DefinitionBlock ("", "SSDT", 2, "Slav", "AMDGPU", 0x00001000)
            }
           Else
           {
-               Return (Zero)
           }
         }
     }

extra-files/SSDT-NoHybGfx.dsl

@@ -0,0 +1,50 @@
+/*
+* Disable discrete graphics (c) Bumblebee-Project
+* >> https://github.com/Bumblebee-Project/Bumblebee/wiki/ACPI-for-Developers#acpi-and-the-nvidia-card
+* ---
+* Important: Change all ACPI paths accordingly.
+* Credit to Maemo for original idea and midi1996 for the SSDT
+*/
+DefinitionBlock ("", "SSDT", 2, "MAEMO", "NoHybGfx", 0x00000000)
+{
+    External (_SB_.PCI0.PEG0.PEGP._DSM, MethodObj)    // dGPU ACPI Path
+    External (_SB_.PCI0.PEG0.PEGP._PS3, MethodObj)    // dGPU ACPI Path
+
+    Device (NHG1)
+    {
+        Name (_HID, "NHG10000")  // _HID: Hardware ID
+        Method (_STA, 0, NotSerialized)  // _STA: Status
+        {
+            If (_OSI ("Darwin"))
+            {
+                Return (0x0F)
+            }
+            Else
+            {
+                Return (Zero)
+            }
+        }
+
+        Method (_INI, 0, NotSerialized)  // _INI: Initialize
+        {
+            If (_OSI ("Darwin"))
+            {
+                // If conditional methods reference creation successful
+                If ((CondRefOf (\_SB.PCI0.PEG0.PEGP._DSM) && CondRefOf (\_SB.PCI0.PEG0.PEGP._PS3)))
+                {
+                    // Card Off Request
+                    \_SB.PCI0.PEG0.PEGP._DSM (ToUUID ("a486d8f8-0bda-471b-a72b-6042a6b5bee0"), 0x0100, 0x1A, Buffer (0x04)
+                        {
+                             0x01, 0x00, 0x00, 0x03                         
+                        })
+                    // Card Off
+                    \_SB.PCI0.PEG0.PEGP._PS3 ()
+                }
+            }
+            Else
+            {
+            }
+        }
+    }
+}
+

extra-files/SSDT-dGPU-Off.dsl

@@ -0,0 +1,35 @@
+/* Based off of Rebaman's work:
+*  https://github.com/RehabMan/OS-X-Clover-Laptop-Config/blob/master/hotpatch/SSDT-DDGPU.dsl
+*/
+DefinitionBlock("", "SSDT", 2, "Slav", "dGPU-Off", 0)
+{
+External(_SB.PCI0.PEG0.PEGP._OFF, MethodObj) // ACPI Path of dGPU
+
+    Device(RMD1)
+    {
+        Name(_HID, "RMD10000") // _HID: Hardware ID
+        Method (_STA, 0, NotSerialized)  // _STA: Status
+        {
+            If (_OSI ("Darwin"))
+            {
+                Return (0x0F)
+            }
+            Else
+            {
+                Return (Zero)
+            }
+        }
+
+        Method(_INI)
+        {
+            If (_OSI ("Darwin"))
+            {
+               // disable discrete graphics (Nvidia/Radeon) if it is present
+               If (CondRefOf(\_SB.PCI0.PEG0.PEGP._OFF)) { \_SB.PCI0.PEG0.PEGP._OFF() }
+            }
+            Else
+            {
+            }
+        }
+    }
+}