Man page 9 : input_register_polled_device

input_register_polled_device - register polled device

int input_register_polled_device(struct input_polled_dev *  dev );

dev
    device to register

The function registers previously initialized polled input device with input layer. The device should be allocated with call to input_allocate_polled_device. Callers should also set up poll method and set up capabilities (id, name, phys, bits) of the corresponding input_dev structure.