READ_PORT
case READ_PORT:
if (command == READ_PORT) {
ret = ni6501_port_command(dev, READ_PORT, port, &bitmap);
retval = vendor_command(cytherm->udev, READ_PORT, 0, 0, buffer, 8);
retval = vendor_command(cytherm->udev, READ_PORT, 1, 0, buffer, 8);