From b033367e61a8526e0581140929c61d09600c582f Mon Sep 17 00:00:00 2001
From: Sean Rhodes <sean@starlabs.systems>
Date: Thu, 27 Feb 2025 19:57:53 +0000
Subject: [PATCH] soc/intel/meteorlake: Add support for USB wake up

Add the same wakeup method that Alder Lake uses to Meteor Lake.

Test=boot `starlabs/starbook/mtl` and check USB devices can wake.

Change-Id: I67da6af619db947ab4830fa2d9904f3e70fbfd21
Signed-off-by: Sean Rhodes <sean@starlabs.systems>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/86628
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kapil Porwal <kapilporwal@google.com>
---
 src/soc/intel/meteorlake/acpi/xhci.asl | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/src/soc/intel/meteorlake/acpi/xhci.asl b/src/soc/intel/meteorlake/acpi/xhci.asl
index 38850508cb..022fbd1430 100644
--- a/src/soc/intel/meteorlake/acpi/xhci.asl
+++ b/src/soc/intel/meteorlake/acpi/xhci.asl
@@ -2,6 +2,9 @@
 
 #include <soc/gpe.h>
 
+/* Include UWES method for enabling USB wake */
+#include <soc/intel/common/acpi/xhci_wake.asl>
+
 /* XHCI Controller 0:14.0 */
 
 Device (XHCI)
@@ -10,6 +13,20 @@ Device (XHCI)
 
 	Name (_PRW, Package () { GPE0_PME_B0, 3 })
 
+	OperationRegion (XPRT, PCI_Config, 0x00, 0x100)
+	Field (XPRT, AnyAcc, NoLock, Preserve)
+	{
+		Offset (0x10),
+		, 16,
+		XMEM, 16,	/* MEM_BASE */
+	}
+
+	Method (_DSW, 3)
+	{
+		UWES ((\U2WE & 0xFFF), PORTSCN_OFFSET, XMEM)
+		UWES ((\U3WE & 0x3F ), PORTSCXUSB3_OFFSET, XMEM)
+	}
+
 	Name (_S3D, 3)	/* D3 supported in S3 */
 	Name (_S0W, 3)	/* D3 can wake device in S0 */
 	Name (_S3W, 3)	/* D3 can wake system from S3 */