[S] Change in coreboot[master]: mb/google/brya/acpi: Add support for GPS_REQUESTDXSTATE

[Felix Held (Code Review)]

Felix Held has submitted this change. ( https://review.coreboot.org/c/coreboot/+/73890 )

Change subject: mb/google/brya/acpi: Add support for GPS_REQUESTDXSTATE
......................................................................

mb/google/brya/acpi: Add support for GPS_REQUESTDXSTATE

Implement the GPS_REQUESTDXSTATE function which forces the
current D notifier state to re-report.

TEST=verified that notifications are forced out when invoked using
acpiexec
BUG=b:271938907
Signed-off-by: Tarun Tuli 
Change-Id: I6dab9b793fe1d0b1c875eddbe6ae324d2894efe6
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73890
Tested-by: build bot (Jenkins) 
Reviewed-by: Eric Lai 
---
M src/mainboard/google/brya/acpi/gps.asl
1 file changed, 30 insertions(+), 1 deletion(-)

Approvals:
  build bot (Jenkins): Verified
  Eric Lai: Looks good to me, approved

diff --git a/src/mainboard/google/brya/acpi/gps.asl b/src/mainboard/google/brya/acpi/gps.asl
index 36bccc1..f201037 100644
--- a/src/mainboard/google/brya/acpi/gps.asl
+++ b/src/mainboard/google/brya/acpi/gps.asl
@@ -4,11 +4,14 @@
 #define GPS_FUNC_GETCALLBACKS	0x13
 #define GPS_FUNC_PSHARESTATUS	0x20
 #define GPS_FUNC_PSHAREPARAMS	0x2a
+#define GPS_FUNC_REQUESTDXSTATE	0x12

#define QUERY_GET_STATUS		0
 #define QUERY_GET_SUPPORTED_FIELDS	1
 #define QUERY_GET_CURRENT_LIMITS	2

+#define EC_D_NOTIFY_MASK	0x7
+
 /* GPS return Package */
 Name (GPSP, Buffer (0x28) {0x0})
 CreateDWordField (GPSP, 0, RETN)
@@ -31,7 +34,8 @@
    			(1 << GPS_FUNC_SUPPORT) |
    			(1 << GPS_FUNC_GETCALLBACKS) |
    			(1 << GPS_FUNC_PSHARESTATUS) |
-				(1 << GPS_FUNC_PSHAREPARAMS)))
+				(1 << GPS_FUNC_PSHAREPARAMS) |
+				(1 << GPS_FUNC_REQUESTDXSTATE)))
    	}
    	Case (GPS_FUNC_GETCALLBACKS)
    	{
@@ -88,6 +92,12 @@
    			}
    		}
    	}
+		Case (GPS_FUNC_REQUESTDXSTATE)
+		{
+			Local0 = ToInteger(_SB.PCI0.LPCB.EC0.GPUD) & EC_D_NOTIFY_MASK
+			_SB.PCI0.PEG0.PEGP.DNOT (Local0, 1)
+			Return (NV_ERROR_SUCCESS)
+		}
    }

Return (NV_ERROR_UNSUPPORTED)