mb/google/stout: Use board-specific PS2M HID/CID to enable multitouch
Use board-specific ASL for PS2-attached trackpad rather than the EC/SIO
default, so that Windows installs a multitouch-capable driver rather
than the standard PS2 mouse driver.
TEST=build/boot Win11 on google/stout, verify trackpad is multitouch
capable.
Change-Id: Id93bbe53f35b1e2c35e36d8175889786b9f5de8b
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/75176
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/mainboard/google/stout/acpi/superio.asl b/src/mainboard/google/stout/acpi/superio.asl
index 967da18..32ed70a 100644
--- a/src/mainboard/google/stout/acpi/superio.asl
+++ b/src/mainboard/google/stout/acpi/superio.asl
@@ -4,7 +4,30 @@
#include "../ec.h"
#define SIO_EC_ENABLE_PS2K // Enable PS/2 Keyboard
-#define SIO_ENABLE_PS2M // Enable PS/2 Mouse
+
+/* SIO_EC_ENABLE_PS2M is not defined in favor of custom ASL below */
/* ACPI code for EC SuperIO functions */
#include <ec/quanta/it8518/acpi/superio.asl>
+
+/* Use multitouch trackpad */
+Scope (\_SB.PCI0.LPCB.SIO)
+{
+ Device (PS2M)
+ {
+ Name (_HID, EISAID("LEN2011"))
+ Name (_CID, EISAID("PNP0F13"))
+
+ Method (_STA, 0, NotSerialized)
+ {
+ Return (0x0F)
+ }
+
+ Name (_CRS, ResourceTemplate()
+ {
+ FixedIO (0x60, 0x01)
+ FixedIO (0x64, 0x01)
+ IRQNoFlags () {12}
+ })
+ }
+}