From a872b9a3bb330c4e6b5e20609af7b2c63bb598ba Mon Sep 17 00:00:00 2001 From: Varshit B Pandya Date: Sun, 20 Mar 2022 22:20:11 +0530 Subject: [PATCH] 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. Corresponding changes in EC are https://crrev.com/c/3545778 and https://crrev.com/c/3547317 BUG=b:205928013 TEST=Build, boot brya0 and dump DSDT to check change Signed-off-by: Varshit B Pandya Change-Id: I07f58b928a0dba92bec3817177142c586e5014b9 Reviewed-on: https://review.coreboot.org/c/coreboot/+/62946 Tested-by: build bot (Jenkins) Reviewed-by: Tim Wawrzynczak Reviewed-by: Sumeet R Pawnikar --- src/ec/google/chromeec/acpi/ec.asl | 9 +++++++++ src/ec/google/chromeec/acpi/emem.asl | 2 ++ 2 files changed, 11 insertions(+) diff --git a/src/ec/google/chromeec/acpi/ec.asl b/src/ec/google/chromeec/acpi/ec.asl index c0c1abb9ad..ae4758af8b 100644 --- a/src/ec/google/chromeec/acpi/ec.asl +++ b/src/ec/google/chromeec/acpi/ec.asl @@ -6,6 +6,9 @@ * re-evaluate their _PPC and _CST tables. */ +// DTT Power Participant Device Notification +#define POWER_STATE_CHANGE_NOTIFICATION 0x81 + // Mainboard specific throttle handler #ifdef DPTF_ENABLE_CHARGER External (\_SB.DPTF.TCHG, DeviceObj) @@ -15,6 +18,8 @@ External (\_SB.DPTF.TCHG, DeviceObj) External(\_SB.DPTC, MethodObj) #endif +External (\_SB.DPTF.TPWR, DeviceObj) + Device (EC0) { Name (_HID, EISAID ("PNP0C09")) @@ -82,6 +87,7 @@ Device (EC0) BTID, 8, // Battery index that host wants to read USPP, 8, // USB Port Power RFWU, 8, // Retimer Firmware Update + PBOK, 8, // Power source change count from dptf } #if CONFIG(EC_GOOGLE_CHROMEEC_ACPI_MEMMAP) @@ -345,6 +351,9 @@ Device (EC0) { Printf ("EC: GOT PD EVENT") Notify (\_SB.PCI0.LPCB.EC0.CREC.ECPD, 0x80) + If (CondRefOf (\_SB.DPTF.TPWR)) { + Notify (\_SB.DPTF.TPWR, POWER_STATE_CHANGE_NOTIFICATION) + } } #endif diff --git a/src/ec/google/chromeec/acpi/emem.asl b/src/ec/google/chromeec/acpi/emem.asl index 3eec35eadf..dd59503bb6 100644 --- a/src/ec/google/chromeec/acpi/emem.asl +++ b/src/ec/google/chromeec/acpi/emem.asl @@ -51,3 +51,5 @@ Offset (0x80), ALS0, 16, // ALS reading 0 in lux Offset (0xa6), GPUD, 8, // GPU Data +Offset (0xa7), +PWRT, 8, // Power source and change count