1 files changed, 66 insertions, 0 deletions
diff --git a/src/southbridge/via/vt8237r/acpi/irqlinks.asl b/src/southbridge/via/vt8237r/acpi/irqlinks.asl
new file mode 100644
index 0000000000..6c4c89a77f
--- /dev/null
+++ b/src/southbridge/via/vt8237r/acpi/irqlinks.asl
@@ -0,0 +1,66 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2017 Lubomir Rintel <lkundrak@v3.sk>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <arch/x86/acpi/statdef.asl>
+
+/* Possible PNP IRQs */
+Name (PIRQ, ResourceTemplate () {
+	IRQ (Level, ActiveLow, Shared) {3, 4, 6, 7, 10, 11, 12}
+})
+
+#define IRQ_LINK(reg)						\
+	Name (_HID, EisaId ("PNP0C0F"))				\
+	Name (_UID, 1)						\
+								\
+	Method (_STA, 0) {					\
+		If (LEqual (reg, 0x00)) {			\
+			Return (STA_DISABLED)			\
+		}						\
+		Return (STA_INVISIBLE)				\
+	}							\
+								\
+	Method (_PRS, 0) {					\
+		Return (PIRQ)					\
+	}							\
+								\
+	Name (CRSA, ResourceTemplate () {			\
+		IRQ (Level, ActiveLow, Shared) {}		\
+	})							\
+	Method (_CRS, 0) {					\
+		CreateWordField (CRSA, 0x1, AINT)		\
+		ShiftLeft (One, reg, AINT)			\
+		Return (CRSA)					\
+	}							\
+								\
+	Method (_SRS, 1) {					\
+		CreateWordField (Arg0, 0x1, AINT)		\
+		Store (Zero, Local0)				\
+		Store (AINT, Local1)				\
+		While (LNotEqual (Local1, One)) {		\
+			ShiftRight (Local1, One, Local1)	\
+			Increment (Local0)			\
+		}						\
+		Store (Local0, reg)				\
+	}							\
+								\
+	Method (_DIS, 0) {					\
+		Store (Zero, reg)				\
+	}							\
+
+Device (LNKA) { IRQ_LINK (INTA) }
+Device (LNKB) { IRQ_LINK (INTB) }
+Device (LNKC) { IRQ_LINK (INTC) }
+Device (LNKD) { IRQ_LINK (INTD) }