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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.

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 <varshit.b.pandya@intel.com>
Change-Id: I07f58b928a0dba92bec3817177142c586e5014b9
Reviewed-on: https://review.coreboot.org/c/coreboot/+/62946
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: Sumeet R Pawnikar <sumeet.r.pawnikar@intel.com>
This commit is contained in:
Varshit B Pandya 2022-03-20 22:20:11 +05:30 committed by Felix Held
parent 61b90b173d
commit a872b9a3bb
2 changed files with 11 additions and 0 deletions
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9
src/ec/google/chromeec/acpi/ec.asl
View File

@ -6,6 +6,9 @@
* re-evaluate their _PPC and _CST tables. * re-evaluate their _PPC and _CST tables.
*/ */
// DTT Power Participant Device Notification
#define POWER_STATE_CHANGE_NOTIFICATION 0x81
// Mainboard specific throttle handler // Mainboard specific throttle handler
#ifdef DPTF_ENABLE_CHARGER #ifdef DPTF_ENABLE_CHARGER
External (\_SB.DPTF.TCHG, DeviceObj) External (\_SB.DPTF.TCHG, DeviceObj)
@ -15,6 +18,8 @@ External (\_SB.DPTF.TCHG, DeviceObj)
External(\_SB.DPTC, MethodObj) External(\_SB.DPTC, MethodObj)
#endif #endif
External (\_SB.DPTF.TPWR, DeviceObj)
Device (EC0) Device (EC0)
{ {
Name (_HID, EISAID ("PNP0C09")) Name (_HID, EISAID ("PNP0C09"))
@ -82,6 +87,7 @@ Device (EC0)
BTID, 8, // Battery index that host wants to read BTID, 8, // Battery index that host wants to read
USPP, 8, // USB Port Power USPP, 8, // USB Port Power
RFWU, 8, // Retimer Firmware Update RFWU, 8, // Retimer Firmware Update
PBOK, 8, // Power source change count from dptf
} }
#if CONFIG(EC_GOOGLE_CHROMEEC_ACPI_MEMMAP) #if CONFIG(EC_GOOGLE_CHROMEEC_ACPI_MEMMAP)
@ -345,6 +351,9 @@ Device (EC0)
{ {
Printf ("EC: GOT PD EVENT") Printf ("EC: GOT PD EVENT")
Notify (\_SB.PCI0.LPCB.EC0.CREC.ECPD, 0x80) Notify (\_SB.PCI0.LPCB.EC0.CREC.ECPD, 0x80)
If (CondRefOf (\_SB.DPTF.TPWR)) {
Notify (\_SB.DPTF.TPWR, POWER_STATE_CHANGE_NOTIFICATION)
}
} }
#endif #endif

2
src/ec/google/chromeec/acpi/emem.asl
View File

@ -51,3 +51,5 @@ Offset (0x80),
ALS0, 16, // ALS reading 0 in lux ALS0, 16, // ALS reading 0 in lux
Offset (0xa6), Offset (0xa6),
GPUD, 8, // GPU Data GPUD, 8, // GPU Data
Offset (0xa7),
PWRT, 8, // Power source and change count