If you are experiencing issues with your controller not working in Advanced Warfare on your PS3, there are a few steps you can take to try and resolve the issue:
Check controller settings in-game: Make sure that the controller is selected as the input device in the game's settings. If the controller is not selected, the game may not register any input from it. You can access the game's settings by pressing the start button on your controller while in-game.
Check for updates: Make sure that the game and your PS3 console are both up to date with the latest software updates. You can check for updates by selecting "Settings" from the PS3 menu, then selecting "System Update" and following the prompts.
Reset the controller: Try resetting the controller by pressing the reset button on the back of the controller using a paperclip or similar object. This should clear any issues that may be preventing the controller from working properly.
Try a different controller: If you have another controller available, try using it to see if the issue is specific to the original controller.
Re-sync the controller: If you are using a wireless controller, try re-syncing the controller to the PS3 console. To do this, connect the controller to the console using a USB cable, then press the PS button on the controller.
Check for compatibility: Make sure that the controller you are using is compatible with your PS3 console. You can check the manufacturer's website or packaging to confirm this.
If none of these steps resolve the issue, it may be best to contact the game's customer support or the manufacturer of the controller for further assistance.