1 files changed, 116 insertions, 0 deletions
diff --git a/src/mainboard/google/skyrim/variants/winterhold/include/variant/acpi/dtts.asl b/src/mainboard/google/skyrim/variants/winterhold/include/variant/acpi/dtts.asl
new file mode 100644
index 0000000000..733af28943
--- /dev/null
+++ b/src/mainboard/google/skyrim/variants/winterhold/include/variant/acpi/dtts.asl
@@ -0,0 +1,116 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+External(\_SB.DTTB, MethodObj)
+External(\_SB.DTTC, MethodObj)
+External(\_SB.DTTD, MethodObj)
+External(\_SB.DTTE, MethodObj)
+External(\_SB.DTTF, MethodObj)
+
+Scope (\_SB)
+{
+    //---------------------------------------------
+    // Table | A | B | C | D | E | F | First boot |
+    //---------------------------------------------
+    // PRTN  | 0 | 1 | 2 | 3 | 4 | 5 |     7      |
+    //---------------------------------------------
+    Name (PRTN, 7)
+
+    Method (DTTS, 0, Serialized)
+    {
+        // Set table A as default table after power on device
+        If (\_SB.PRTN == 7)
+        {
+            \_SB.DDEF()
+            Store (0, \_SB.PRTN)
+            Return (Zero)
+        }
+
+        If (\_SB.PCI0.LPCB.EC0.STTB == 0) { // Desktop
+            If (\_SB.PCI0.LPCB.EC0.LIDS == 1) { // Lid-open
+                // Table A/B
+                If ((\_SB.PRTN == 0) || (\_SB.PRTN == 1)) {
+                    // AMB sensor trigger point
+                    // 50C will store 123(0x7B) in mapped memory
+                    // 50C=323K, 323-200(offset)=123(0x7B)
+                    If (\_SB.PCI0.LPCB.EC0.TIN4 >= 123) {
+                        \_SB.DTTB()
+                        Store (1, \_SB.PRTN)
+                        Return (Zero)
+                    }
+                    // AMB sensor release point
+                    If ((\_SB.PCI0.LPCB.EC0.TIN4 <= 118)) {
+                        \_SB.DDEF()
+                        Store (0, \_SB.PRTN)
+                        Return (Zero)
+                    }
+                    // Keep tht previous thermal table
+                    Return (Zero)
+                } Else {
+                    If (\_SB.PRTN == 3 || \_SB.PRTN == 5) {
+                        \_SB.DTTB()
+                        Store (1, \_SB.PRTN)
+                        Return (Zero)
+                    } Else {
+                        \_SB.DDEF()
+                        Store (0, \_SB.PRTN)
+                        Return (Zero)
+                    }
+                }
+            } Else { // Lid-close
+                // Table C/D
+                If (\_SB.PRTN == 2 || \_SB.PRTN == 3) {
+                    If (\_SB.PCI0.LPCB.EC0.TIN4 >= 128) {
+                        \_SB.DTTD()
+                        Store (3, \_SB.PRTN)
+                        Return (Zero)
+                    }
+                    If(\_SB.PCI0.LPCB.EC0.TIN4 <= 123) {
+                        \_SB.DTTC()
+                        Store (2, \_SB.PRTN)
+                        Return (Zero)
+                    }
+                    // Keep tht previous thermal table
+                    Return (Zero)
+                } Else {
+                    If (\_SB.PRTN == 1 || \_SB.PRTN == 5) {
+                        \_SB.DTTD()
+                        Store (3, \_SB.PRTN)
+                        Return (Zero)
+                    } Else {
+                        \_SB.DTTC()
+                        Store (2, \_SB.PRTN)
+                        Return (Zero)
+                    }
+                }
+            }
+        } Else { // Laptop
+            // Table E/F
+            If (\_SB.PRTN == 4 || \_SB.PRTN == 5) {
+                // AMB sensor trigger point
+                If (\_SB.PCI0.LPCB.EC0.TIN4 >= 118) {
+                    \_SB.DTTF()
+                    Store (5, \_SB.PRTN)
+                    Return (Zero)
+                }
+                // AMB sensor release point
+                If ((\_SB.PCI0.LPCB.EC0.TIN4 <= 113)) {
+                    \_SB.DTTE()
+                    Store (4, \_SB.PRTN)
+                    Return (Zero)
+                }
+                // Keep tht previous thermal table
+                Return (Zero)
+            } Else {
+                If (\_SB.PRTN == 1 || \_SB.PRTN == 3) {
+                    \_SB.DTTF()
+                    Store (5, \_SB.PRTN)
+                    Return (Zero)
+                } Else {
+                    \_SB.DTTE()
+                    Store (4, \_SB.PRTN)
+                    Return (Zero)
+                }
+            }
+        } // Desktop/Laptop End
+    }
+}