NCAA
9-1-2-o
No defensive player shall charge into a passer or throw him to the ground when it is obvious the ball has been thrown.
BUT also,
2-27-5
The passer is the player who throws a legal forward pass.
So I would say the answer in NCAA is No, there is no roughing the passer. There might of course be some other type of Personal Foul. The key difference being that the RTP can be added onto the end of the last run on a completed pass.
EDIT - Boy, my typing must be slow when I get beaten to the punch by
two other posts.