Always use SDL_PrivateJoystickBatteryLevel to update battery level

But do not use it for initialisation.

src/joystick/hidapi/SDL_hidapi_luna.c

@@ -267,16 +267,16 @@ HIDAPI_DriverLuna_HandleBluetoothStatePacket(SDL_Joystick *joystick, SDL_DriverL
         /* Battery level report */
         int level = data[1] * 100 / 0xFF;
         if (level == 0) {
-            joystick->epowerlevel = SDL_JOYSTICK_POWER_EMPTY;
+            SDL_PrivateJoystickBatteryLevel(joystick, SDL_JOYSTICK_POWER_EMPTY);
         }
         else if (level <= 20) {
-            joystick->epowerlevel = SDL_JOYSTICK_POWER_LOW;
+            SDL_PrivateJoystickBatteryLevel(joystick, SDL_JOYSTICK_POWER_LOW);
         }
         else if (level <= 70) {
-            joystick->epowerlevel = SDL_JOYSTICK_POWER_MEDIUM;
+            SDL_PrivateJoystickBatteryLevel(joystick, SDL_JOYSTICK_POWER_MEDIUM);
         }
         else {
-            joystick->epowerlevel = SDL_JOYSTICK_POWER_FULL;
+            SDL_PrivateJoystickBatteryLevel(joystick, SDL_JOYSTICK_POWER_FULL);
         }
 
         return;

src/joystick/hidapi/SDL_hidapi_ps4.c

@@ -801,18 +801,18 @@ HIDAPI_DriverPS4_HandleStatePacket(SDL_Joystick *joystick, SDL_hid_device *dev,
     SDL_PrivateJoystickAxis(joystick, SDL_CONTROLLER_AXIS_RIGHTY, axis);
 
     if (packet->ucBatteryLevel & 0x10) {
-        joystick->epowerlevel = SDL_JOYSTICK_POWER_WIRED;
+        SDL_PrivateJoystickBatteryLevel(joystick, SDL_JOYSTICK_POWER_WIRED);
     } else {
         /* Battery level ranges from 0 to 10 */
         int level = (packet->ucBatteryLevel & 0xF);
         if (level == 0) {
-            joystick->epowerlevel = SDL_JOYSTICK_POWER_EMPTY;
+            SDL_PrivateJoystickBatteryLevel(joystick, SDL_JOYSTICK_POWER_EMPTY);
         } else if (level <= 2) {
-            joystick->epowerlevel = SDL_JOYSTICK_POWER_LOW;
+            SDL_PrivateJoystickBatteryLevel(joystick, SDL_JOYSTICK_POWER_LOW);
         } else if (level <= 7) {
-            joystick->epowerlevel = SDL_JOYSTICK_POWER_MEDIUM;
+            SDL_PrivateJoystickBatteryLevel(joystick, SDL_JOYSTICK_POWER_MEDIUM);
         } else {
-            joystick->epowerlevel = SDL_JOYSTICK_POWER_FULL;
+            SDL_PrivateJoystickBatteryLevel(joystick, SDL_JOYSTICK_POWER_FULL);
         }
     }
 

src/joystick/hidapi/SDL_hidapi_switch.c

@@ -1440,20 +1440,20 @@ static void HandleFullControllerState(SDL_Joystick *joystick, SDL_DriverSwitch_C
      * LSB of connection nibble is USB/Switch connection status
      */
     if (packet->controllerState.ucBatteryAndConnection & 0x1) {
-        joystick->epowerlevel = SDL_JOYSTICK_POWER_WIRED;
+        SDL_PrivateJoystickBatteryLevel(joystick, SDL_JOYSTICK_POWER_WIRED);
     } else {
         /* LSB of the battery nibble is used to report charging.
          * The battery level is reported from 0(empty)-8(full)
          */
         int level = (packet->controllerState.ucBatteryAndConnection & 0xE0) >> 4;
         if (level == 0) {
-            joystick->epowerlevel = SDL_JOYSTICK_POWER_EMPTY;
+            SDL_PrivateJoystickBatteryLevel(joystick, SDL_JOYSTICK_POWER_EMPTY);
         } else if (level <= 2) {
-            joystick->epowerlevel = SDL_JOYSTICK_POWER_LOW;
+            SDL_PrivateJoystickBatteryLevel(joystick, SDL_JOYSTICK_POWER_LOW);
         } else if (level <= 6) {
-            joystick->epowerlevel = SDL_JOYSTICK_POWER_MEDIUM;
+            SDL_PrivateJoystickBatteryLevel(joystick, SDL_JOYSTICK_POWER_MEDIUM);
         } else {
-            joystick->epowerlevel = SDL_JOYSTICK_POWER_FULL;
+            SDL_PrivateJoystickBatteryLevel(joystick, SDL_JOYSTICK_POWER_FULL);
         }
     }
 

src/joystick/hidapi/SDL_hidapi_xbox360w.c

@@ -81,13 +81,13 @@ UpdatePowerLevel(SDL_Joystick *joystick, Uint8 level)
     float normalized_level = (float)level / 255.0f;
 
     if (normalized_level <= 0.05f) {
-        joystick->epowerlevel = SDL_JOYSTICK_POWER_EMPTY;
+        SDL_PrivateJoystickBatteryLevel(joystick, SDL_JOYSTICK_POWER_EMPTY);
     } else if (normalized_level <= 0.20f) {
-        joystick->epowerlevel = SDL_JOYSTICK_POWER_LOW;
+        SDL_PrivateJoystickBatteryLevel(joystick, SDL_JOYSTICK_POWER_LOW);
     } else if (normalized_level <= 0.70f) {
-        joystick->epowerlevel = SDL_JOYSTICK_POWER_MEDIUM;
+        SDL_PrivateJoystickBatteryLevel(joystick, SDL_JOYSTICK_POWER_MEDIUM);
     } else {
-        joystick->epowerlevel = SDL_JOYSTICK_POWER_FULL;
+        SDL_PrivateJoystickBatteryLevel(joystick, SDL_JOYSTICK_POWER_FULL);
     }
 }
 

src/joystick/windows/SDL_rawinputjoystick.c

@@ -1253,7 +1253,7 @@ RAWINPUT_JoystickOpen(SDL_Joystick *joystick, int device_index)
         }
     }
 
-    SDL_PrivateJoystickBatteryLevel(joystick, SDL_JOYSTICK_POWER_UNKNOWN);
+    joystick->ePowerLevel = SDL_JOYSTICK_POWER_UNKNOWN;
 
     return 0;
 }