DeBarge Facing Drug Charge

We broke the story ... Mark was busted along with a female companion in a Hollywood hotel room ... after the woman's parole officer stopped by for a routine check.

We're told the officer searched the room and observed narcotics -- unclear exactly what kind. Mark and his female companion were placed under arrest.

Now, Mark has been charged with felony drug possession in addition to misdemeanor possession of drug paraphernalia. Mark was also charged with possession of a fake ID.