Victory over Atletico Madrid on Sunday saw Barca reach the Champions League places.
Campo told Radio Marca: "He has raised the team again, a team with joy.
"Because of the people who have come and the way of playing that he has brought so special to Barça, and those old players with a lot of experience who have regained that positive energy that Xavi gives off when it comes to making a team and the way of seeing football.
"And when victories like yesterday's come, important ones, with a 4-1 at half-time to recover ideas and feelings. And it's nice to see him celebrate in the locker room."
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