SF: use DM setting for idle timer

Bug: 327186418
Test: manual
Change-Id: I0cd01ea12911c0e601f173cccaeff104ccb4c825
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 1265540..734058a 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -3588,7 +3588,7 @@
                 {.enableFrameRateOverride = enableFrameRateOverride,
                  .frameRateMultipleThreshold =
                          base::GetIntProperty("debug.sf.frame_rate_multiple_threshold"s, 0),
-                 .idleTimerTimeout = idleTimerTimeoutMs,
+                 .legacyIdleTimerTimeout = idleTimerTimeoutMs,
                  .kernelIdleTimerController = kernelIdleTimerController};
 
         creationArgs.refreshRateSelector =
@@ -8639,8 +8639,13 @@
             return INVALID_OPERATION;
         } else {
             using Policy = scheduler::RefreshRateSelector::DisplayManagerPolicy;
+            const auto idleScreenConfigOpt =
+                    FlagManager::getInstance().idle_screen_refresh_rate_timeout()
+                    ? specs.idleScreenRefreshRateConfig
+                    : std::nullopt;
             const Policy policy{DisplayModeId(specs.defaultMode), translate(specs.primaryRanges),
-                                translate(specs.appRequestRanges), specs.allowGroupSwitching};
+                                translate(specs.appRequestRanges), specs.allowGroupSwitching,
+                                idleScreenConfigOpt};
 
             return setDesiredDisplayModeSpecsInternal(display, policy);
         }