hwc2: Enable vsync upon refresh rate increase.
Sync model needs to be corrected upon refresh rate change.
While ramping up, it is necessary to ensure that first vsync
after rate change is delivered to client. Enabling it in
prepare phase can make this happen.
Client would turn on h/w vsync only after config change takes
effect ie; PostCommit. Since driver is busy in processing
current commit, it can lead to vsync miss.
CRs-Fixed: 2418977
Change-Id: Ib5d75089e89219c73c7f15167cd8ddfd8ce70c38
6 files changed