[coreboot-gerrit] Change in ...coreboot[master]: ec/google/wilco: Add ACPI device for event interface

[Duncan Laurie (Code Review)]

Duncan Laurie has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/31204

Change subject: ec/google/wilco: Add ACPI device for event interface
......................................................................

ec/google/wilco: Add ACPI device for event interface

Add a separate ACPI device for the Wilco EC event interface so that the
OS drivers can bind to it separately.  Since the event handling is all
done with ACPI and not mailbox calls this will be implemented as a
standard acpi_driver in the kernel.

BUG=b:119046283
TEST=veriy device exists in DSDT

Change-Id: I5259a926fb6d5faea835bcdefa12f0184c5adf4a
Signed-off-by: Duncan Laurie 
---
M src/ec/google/wilco/acpi/ec_dev.asl
M src/ec/google/wilco/acpi/event.asl
2 files changed, 28 insertions(+), 16 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/04/31204/1

diff --git a/src/ec/google/wilco/acpi/ec_dev.asl b/src/ec/google/wilco/acpi/ec_dev.asl
index a3e8c48..fb43747 100644
--- a/src/ec/google/wilco/acpi/ec_dev.asl
+++ b/src/ec/google/wilco/acpi/ec_dev.asl
@@ -62,3 +62,31 @@
    	EndDependentFn ()
    })
 }
+
+Device (WEVT)
+{
+	Name (_HID, "GOOG000D")
+	Name (_UID, 1)
+	Name (_DDN, "Wilco EC Event Interface")
+
+	Method (_STA)
+	{
+		Return (0xB)
+	}
+
+	/* Get Event Buffer */
+	Method (QSET, 0, Serialized)
+	{
+		/* Get count of event bytes */
+		Local0 = R (QSEC)
+		Name (QBUF, Buffer (Local0) {})
+
+		/* Fill QS event buffer with Local0 bytes */
+		For (Local1 = 0, Local1 < Local0, Local1++) {
+		    QBUF[Local1] = R (QSEB)
+		}
+
+		Printf ("QS = %o", QBUF)
+		Return (QBUF)
+	}
+}
diff --git a/src/ec/google/wilco/acpi/event.asl b/src/ec/google/wilco/acpi/event.asl
index 4a3394f..754ed26 100644
--- a/src/ec/google/wilco/acpi/event.asl
+++ b/src/ec/google/wilco/acpi/event.asl
@@ -125,19 +125,3 @@
    	ECQ4 (Local0)
    }
 }
-
-/* Get Event Buffer */
-Method (QSET, 0, Serialized)
-{
-	/* Get count of event bytes */
-	Local0 = R (QSEC)
-	Name (QBUF, Buffer (Local0) {})
-
-	/* Fill QS event buffer with Local0 bytes */
-	For (Local1 = 0, Local1 < Local0, Local1++) {
-		QBUF[Local1] = R (QSEB)
-	}
-
-	Printf ("QS = %o", QBUF)
-	Return (QBUF)
-}