GPIOMM_EXTENT
#define MAX_NUM_GPIOMM max_num_isa_dev(GPIOMM_EXTENT)
if (!devm_request_region(dev, base[id], GPIOMM_EXTENT, name)) {
base[id], base[id] + GPIOMM_EXTENT);
regs = devm_ioport_map(dev, base[id], GPIOMM_EXTENT);