Vernon Davis revealed Wednesday how frustrated he was adapting to a 49ers offense that might use him heavily in their playoff opener. "When I first got in this offense, it was almost as if I wanted to quit," Davis said Wednesday. "I was like, 'This is just too much.' There was just too much information at one time that they were throwing on me and Delanie (Walker) and the rest of the tight ends. "But we stuck with it. We learned as much as we possibly could. And here we are."