You can also use it in some cases where you want to make it clear that something you are talking about is not a big deal, instead of и всё. For example: Ну что ты теряешь время? ! Просто позвони ему и все дела! Don't waste your time. Just call him. That's all.

If you do not mean context like . Я сделал все дела ( i have made all things i had to do ), that is the direct and properly meaning of that phrase, it could an another way something very colloquial and kind of slang in conversation. it could be Ну там, все дела . Я ездил в деревню , банька , шашлычек , ну там все дела . I went in village , i got bathhouse , barbecue , and the rest pleasure what could be meant in this situation

I heard it in a song. "Увози меня и все дела"

I would say, that frase is not useful now. I haven't heard it for a long time, ( maybe only from old people). Just my opinion)