intel_dbuf_num_active_pipes
min_t(u8, intel_dbuf_num_active_pipes(new_dbuf_state), 3);
min_t(u8, intel_dbuf_num_active_pipes(new_dbuf_state), INTEL_NUM_PIPES(display));
int intel_dbuf_num_active_pipes(const struct intel_dbuf_state *dbuf_state);