From f01f9279bfc6c7fa082880541c0fa0c83f78cf03 Mon Sep 17 00:00:00 2001
From: Winston Hoy <winston@commonenergy.us>
Date: Mon, 17 Oct 2022 11:09:24 -0400
Subject: [PATCH] add ACPI methods for setting fan speeds

Change-Id: Ib6548c571de300cec476f06f526d4c032e438f34
---
 src/ec/system76/ec/acpi/s76.asl | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/src/ec/system76/ec/acpi/s76.asl b/src/ec/system76/ec/acpi/s76.asl
index 8db49df543e..1a1af0323d6 100644
--- a/src/ec/system76/ec/acpi/s76.asl
+++ b/src/ec/system76/ec/acpi/s76.asl
@@ -145,6 +145,24 @@ Device (S76D) {
 		Return ((Local1 << 8) | Local0)
 	}
 
+	// Set Fan speed
+	Method (SFD0, 1, Serialized) {
+		If (^^PCI0.LPCB.EC0.ECOK) {
+			^^PCI0.LPCB.EC0.FDAT = Zero
+			^^PCI0.LPCB.EC0.FBUF = Arg0
+			^^PCI0.LPCB.EC0.FCMD = 0xCE
+		}
+	}
+#if CONFIG(EC_SYSTEM76_EC_DGPU)
+	Method (SFD1, 1, Serialized) {
+		If (^^PCI0.LPCB.EC0.ECOK) {
+			^^PCI0.LPCB.EC0.FDAT = Zero
+			^^PCI0.LPCB.EC0.FBUF = Arg0
+			^^PCI0.LPCB.EC0.FCMD = 0xCF
+		}
+	}
+#endif // CONFIG(EC_SYSTEM76_EC_DGPU)
+
 	// Temperature names
 	Method (NTMP, 0, Serialized) {
 		Return (Package() {