What happened to dillon's father on desperate housewives?

In "Desperate Housewives," Dillon's father, Tom Scavo, faces various challenges throughout the series, including struggles with his career and personal relationships. However, Dillon himself is not a prominent character, and it seems there might be some confusion, as Tom Scavo's father, Frank, appears in the show and has a strained relationship with Tom. The storyline primarily focuses on Tom's life and family dynamics rather than any significant events involving Dillon's father.