  Non-equilibrium two-parameter pumping transport through graphene ribbons,
attached to reservoirs is described. A tight-binding model is solved using
Keldysh formalism, and the crossover between adiabatic and non-adiabatic
regimes is studied. Pumped dc currents through armchair ribbons show properties
common in two-dimensional systems. The width-dependent dc current in zigzag
ribbons, reveals that edge states akin to those in two-dimensional topological
insulators, do not contribute to pumped transport in the adiabatic regime. The
interplay between propagating and evanescent modes is discussed.
