stop ticking during intermittent sleep

Source/hoc-clk/sysmodule/src/bpmp/bpmp.cpp

@@ -15,6 +15,7 @@
  *
  */
 
+#include <atomic>
 #include <cstring>
 #include <switch.h>
 
@@ -79,6 +80,8 @@ namespace bpmp {
         Thread s_pscThread;
         bool s_pscExit = false;
 
+        std::atomic_bool s_isAwake = true;
+
         void PscThreadFunc(void *) {
             while (!s_pscExit) {
                 Result rc = eventWait(&s_pscModule.event, 1'000'000'000ULL);
@@ -95,6 +98,10 @@ namespace bpmp {
                         if (R_FAILED(wrc)) {
                             fileUtils::LogLine("[bpmp] restart after wake failed: 0x%x", wrc);
                         }
+
+                        s_isAwake = true;
+                    } else if (state == PscPmState_ReadySleep) {
+                        s_isAwake = false;
                     }
 
                     pscPmModuleAcknowledge(&s_pscModule, state);
@@ -221,4 +228,8 @@ namespace bpmp {
         return &s_sharedInfo;
     }
 
+    bool IsAwake() {
+        return s_isAwake;
+    }
+
 } // namespace bpmp

Source/hoc-clk/sysmodule/src/bpmp/bpmp.hpp

@@ -27,4 +27,7 @@ namespace bpmp {
     void StopSleepMonitorThread();
 
     const HocClkBpmpSharedInfo *GetSharedInfo();
+    
+    // Always true on stock exosphere
+    bool IsAwake();
 }

Source/hoc-clk/sysmodule/src/mgr/clock_manager.cpp

@@ -879,6 +879,11 @@ namespace clockManager {
     }
 
     void WaitForNextTick() {
+        if (!bpmp::IsAwake()) {
+            svcSleepThread(250 * 1000000ULL);  // 250ms
+            return;
+        }
+
         if (board::GetHz(HocClkModule_MEM) > 665000000)
             svcSleepThread(config::GetConfigValue(HocClkConfigValue_PollingIntervalMs) * 1000000ULL);
         else