1 files changed, 119 insertions, 0 deletions
diff --git a/src/soc/intel/braswell/acpi/lpe.asl b/src/soc/intel/braswell/acpi/lpe.asl
new file mode 100644
index 0000000000..dfa555c834
--- /dev/null
+++ b/src/soc/intel/braswell/acpi/lpe.asl
@@ -0,0 +1,119 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2014 Google Inc.
+ *
+ * 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; version 2 of
+ * the License.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ */
+
+Device (LPEA)
+{
+	Name (_HID, "80860F28")
+	Name (_CID, "80860F28")
+	Name (_UID, 1)
+	Name (_DDN, "Low Power Audio Controller")
+	Name (_PR0, Package () { PLPE })
+
+	Name (RBUF, ResourceTemplate()
+	{
+		Memory32Fixed (ReadWrite, 0, 0x00200000, BAR0)
+		Memory32Fixed (ReadWrite, 0, 0x00001000, BAR1)
+		Memory32Fixed (ReadWrite, 0, 0x00100000, BAR2)
+		Interrupt (ResourceConsumer, Level, ActiveLow, Exclusive,,,)
+		{
+			LPE_DMA0_IRQ
+		}
+		Interrupt (ResourceConsumer, Level, ActiveLow, Exclusive,,,)
+		{
+			LPE_DMA1_IRQ
+		}
+		Interrupt (ResourceConsumer, Level, ActiveLow, Exclusive,,,)
+		{
+			LPE_SSP0_IRQ
+		}
+		Interrupt (ResourceConsumer, Level, ActiveLow, Exclusive,,,)
+		{
+			LPE_SSP1_IRQ
+		}
+		Interrupt (ResourceConsumer, Level, ActiveLow, Exclusive,,,)
+		{
+			LPE_SSP2_IRQ
+		}
+		Interrupt (ResourceConsumer, Level, ActiveLow, Exclusive,,,)
+		{
+			LPE_IPC2HOST_IRQ
+		}
+	})
+
+	Method (_CRS)
+	{
+		/* Update BAR0 from NVS */
+		CreateDwordField (^RBUF, ^BAR0._BAS, BAS0)
+		Store (\LPB0, BAS0)
+
+		/* Update BAR1 from NVS */
+		CreateDwordField (^RBUF, ^BAR1._BAS, BAS1)
+		Store (\LPB1, BAS1)
+
+		/* Update LPE FW from NVS */
+		CreateDwordField (^RBUF, ^BAR2._BAS, BAS2)
+		Store (\LPFW, BAS2)
+
+		/* Append any Mainboard defined GPIOs */
+		If (CondRefOf (^GBUF, Local0)) {
+			ConcatenateResTemplate (^RBUF, ^GBUF, Local1)
+			Return (Local1)
+		}
+
+		Return (^RBUF)
+	}
+
+	Method (_STA)
+	{
+		If (LEqual (\LPEN, 1)) {
+			Return (0xF)
+		} Else {
+			Return (0x0)
+		}
+	}
+
+	OperationRegion (KEYS, SystemMemory, LPB1, 0x100)
+	Field (KEYS, DWordAcc, NoLock, WriteAsZeros)
+	{
+		Offset (0x84),
+		PSAT, 32,
+	}
+
+	PowerResource (PLPE, 0, 0)
+	{
+		Method (_STA)
+		{
+			Return (1)
+		}
+
+		Method (_OFF)
+		{
+			Or (PSAT, 0x00000003, PSAT)
+			Or (PSAT, 0x00000000, PSAT)
+		}
+
+		Method (_ON)
+		{
+			And (PSAT, 0xfffffffc, PSAT)
+			Or (PSAT, 0x00000000, PSAT)
+		}
+	}
+}