Source: The Great Interpretation of Dreams (Ibn Sirin)
A laughing (smiling) father in a dream indicates his satisfaction, happiness, and the fulfillment of the dreamer's wishes.
Source: Perfuming Humanity in the Expression of Dreams (Al-Nabulsi)
A laughing father indicates goodness and benefit attained by the dreamer.
Source: Signs in the Science of Expressions (Ibn Shaheen)
A laughing father is interpreted as goodness and joy.