Transportation from Emei to Chongqing

As I am planning to go from Emei shan to Chongqing, does anybody know if there is a bus that goes to Chongqing from anywhere near Emei shan? The thing is I see that there are buses from Chongqing to Emei, however I do not find any kind of info on the opposite route. Also, can anybody tell me the schedule?