Change in coreboot[master]: ec/google: Notify DPTF driver power participant on PD event

[Varshit B Pandya (Code Review)]

Attention is currently required from: Tim Wawrzynczak.
Varshit B Pandya has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/62946 )

Change subject: ec/google: Notify DPTF driver power participant on PD event
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ec/google: Notify DPTF driver power participant on PD event

The DPTF power participant device needs to be notified when
power source changes so it can re-evaluate power source and
power source change count, this can be later used by DPTF along
with methods provided by EC.

BUG=b:205928013
TEST=Build, boot brya0 and dump DSDT to check change

Signed-off-by: Varshit B Pandya 
Change-Id: I07f58b928a0dba92bec3817177142c586e5014b9
---
M src/ec/google/chromeec/acpi/ec.asl
1 file changed, 5 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/46/62946/1

diff --git a/src/ec/google/chromeec/acpi/ec.asl b/src/ec/google/chromeec/acpi/ec.asl
index 69d608b..c74b38f 100644
--- a/src/ec/google/chromeec/acpi/ec.asl
+++ b/src/ec/google/chromeec/acpi/ec.asl
@@ -15,6 +15,8 @@
 External(_SB.DPTC, MethodObj)
 #endif

+External (_SB.DPTF.TPWR, DeviceObj)
+
 Device (EC0)
 {
    Name (_HID, EISAID ("PNP0C09"))
@@ -82,6 +84,8 @@
    	BTID, 8,	// Battery index that host wants to read
    	USPP, 8,	// USB Port Power
    	RFWU, 8,	// Retimer Firmware Update
+		PWRT, 8,	// Power source and change count
+		PBOK, 8,	// Power source change count from dptf
    }

#if CONFIG(EC_GOOGLE_CHROMEEC_ACPI_MEMMAP)
@@ -352,6 +356,7 @@
    {
    	Printf ("EC: GOT PD EVENT")
    	Notify (_SB.PCI0.LPCB.EC0.CREC.ECPD, 0x80)
+		Notify (_SB.DPTF.TPWR, 0x81)
    }
 #endif