bhnd_get_region_addr
error = bhnd_get_region_addr(child, BHND_PORT_AGENT, 0, 0,
error = bhnd_get_region_addr(child, BHND_PORT_DEVICE, 0, 0, &r_addr,
if (bhnd_get_region_addr(child, BHND_PORT_DEVICE, 0, 0, &addr, &size))
error = bhnd_get_region_addr(sc->dev, BHND_PORT_DEVICE, port,
error = bhnd_get_region_addr(sc->dev, type, port, region, &cr->cr_addr,