GMBUS0
intel_de_write(display, GMBUS0(display), 0);
intel_de_write_fw(display, GMBUS0(display),
intel_de_write_fw(display, GMBUS0(display), gmbus0_reg);
intel_de_write_fw(display, GMBUS0(display), gmbus0_source | bus->reg0);
intel_de_write_fw(display, GMBUS0(display), 0);
intel_de_write_fw(display, GMBUS0(display), 0);
intel_de_write_fw(display, GMBUS0(display), 0);