x86: acpi: Add DPTF asl files
Add common DPTF (Intel Dynamic Performance and Thermal Framework) files,
taken from coreboot.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/x86/include/asm/acpi/dptf/charger.asl b/arch/x86/include/asm/acpi/dptf/charger.asl
new file mode 100644
index 0000000..7f4a7ec
--- /dev/null
+++ b/arch/x86/include/asm/acpi/dptf/charger.asl
@@ -0,0 +1,65 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2014 Google Inc.
+ * Copyright (C) 2016 Intel Corporation.
+ */
+
+Device (TCHG)
+{
+ Name (_HID, "INT3403")
+ Name (_UID, 0)
+ Name (PTYP, 0x0B)
+ Name (_STR, Unicode("Battery Charger"))
+
+ Method (_STA)
+ {
+ If (LEqual (\DPTE, One)) {
+ Return (0xF)
+ } Else {
+ Return (0x0)
+ }
+ }
+
+ /* Return charger performance states defined by mainboard */
+ Method (PPSS)
+ {
+ Return (\_SB.CHPS)
+ }
+
+ /* Return maximum charger current limit */
+ Method (PPPC)
+ {
+ /* Convert size of PPSS table to index */
+ Store (SizeOf (\_SB.CHPS), Local0)
+ Decrement (Local0)
+
+ /* Check if charging is disabled (AC removed) */
+ If (LEqual (\_SB.PCI0.LPCB.EC0.ACEX, Zero)) {
+ /* Return last power state */
+ Return (Local0)
+ } Else {
+ /* Return highest power state */
+ Return (0)
+ }
+
+ Return (0)
+ }
+
+ /* Set charger current limit */
+ Method (SPPC, 1)
+ {
+ /* Retrieve Control (index 4) for specified PPSS level */
+ Store (DeRefOf (Index (DeRefOf (Index
+ (\_SB.CHPS, ToInteger (Arg0))), 4)), Local0)
+
+ /* Pass Control value to EC to limit charging */
+ \_SB.PCI0.LPCB.EC0.CHGS (Local0)
+ }
+
+ /* Initialize charger participant */
+ Method (INIT)
+ {
+ /* Disable charge limit */
+ \_SB.PCI0.LPCB.EC0.CHGD ()
+ }
+}