HostPowerManagement: Lift out the suspension check, to remove code duplication

The difference between the AVR and the GD32 implementation was the way we
checked if the device is suspended, otherwise the logic was exactly the same,
duplicated.

To remove the need for duplicating the same code for every architecture we
support, lift out the suspension check instead. This way the core logic becomes
shared between all of them.

Signed-off-by: Gergely Nagy <algernon@keyboard.io>

plugins/Kaleidoscope-HostPowerManagement/src/kaleidoscope/plugin/HostPowerManagement.cpp

@@ -36,10 +36,18 @@ namespace plugin {
 bool HostPowerManagement::was_suspended_   = false;
 bool HostPowerManagement::initial_suspend_ = true;
 
-EventHandlerResult HostPowerManagement::beforeEachCycle() {
+bool HostPowerManagement::isSuspended() {
+#if defined(__AVR__)
+  return USBDevice.isSuspended();
+#elif defined(ARDUINO_ARCH_GD32)
+  return USBCore().isSuspended();
+#else
+  return false;
+#endif
+}
 
-#ifdef __AVR__
-  if ((_usbSuspendState & (1 << SUSPI))) {
+EventHandlerResult HostPowerManagement::beforeEachCycle() {
+  if (isSuspended()) {
     if (!initial_suspend_) {
       if (!was_suspended_) {
         was_suspended_ = true;
@@ -56,23 +64,6 @@ EventHandlerResult HostPowerManagement::beforeEachCycle() {
       hostPowerManagementEventHandler(Resume);
     }
   }
-#endif
-
-#ifdef ARDUINO_ARCH_GD32
-  if (USBCore().isSuspended()) {
-    if (!was_suspended_) {
-      was_suspended_ = true;
-      hostPowerManagementEventHandler(Suspend);
-    } else {
-      hostPowerManagementEventHandler(Sleep);
-    }
-  } else {
-    if (was_suspended_) {
-      was_suspended_ = false;
-      hostPowerManagementEventHandler(Resume);
-    }
-  }
-#endif
 
   return EventHandlerResult::OK;
 }

plugins/Kaleidoscope-HostPowerManagement/src/kaleidoscope/plugin/HostPowerManagement.h

@@ -35,6 +35,8 @@ class HostPowerManagement : public kaleidoscope::Plugin {
  private:
   static bool was_suspended_;
   static bool initial_suspend_;
+
+  bool isSuspended();
 };
 
 }  // namespace plugin