Robin Thicke didn't hold back his emotions amid the adoring crowd of family and friends who gathered to say their final farewell to his father, Alan.

Robin -- flanked by girlfriend April Love Geary -- attended his father's funeral Tuesday in Santa Barbara, CA. Robin comforted friends and family, including Alan's wife, Tanya Callau.

Alan, the beloved TV dad, died from a heart attack last week. He was 69.