SF: Don't cache display modes in HWComposer
The display modes should be stored only in DisplayDevice.
Having the state also in HWComposer is unnesesary and hard to
keep in sync with SF, e.g. during hotplug processing of
displays which can change their supported modes.
Any HWC calls which need to validate their parameters need
to go through display device. This additinally makes the
code more undestandable.
Bug: 159590486
Test: presubmit
Change-Id: I40b03c09a5fd6092fca0682d602deb70db022fa5
diff --git a/services/surfaceflinger/DisplayDevice.h b/services/surfaceflinger/DisplayDevice.h
index 6f07964..b4db933 100644
--- a/services/surfaceflinger/DisplayDevice.h
+++ b/services/surfaceflinger/DisplayDevice.h
@@ -176,6 +176,10 @@
// set-top boxes after a hotplug reconnect.
DisplayModePtr getMode(DisplayModeId) const;
+ void onVsync(nsecs_t timestamp);
+ nsecs_t getVsyncPeriodFromHWC() const;
+ nsecs_t getRefreshTimestamp() const;
+
// release HWC resources (if any) for removable displays
void disconnect();
@@ -207,6 +211,8 @@
DisplayModeId mActiveModeId;
const DisplayModes mSupportedModes;
+ std::atomic<nsecs_t> mLastHwVsync = 0;
+
// TODO(b/74619554): Remove special cases for primary display.
const bool mIsPrimary;