struct ftdi_transfer_control *ftdi_read_data_submit(struct ftdi_context *ftdi, unsigned char *buf, int size);
int ftdi_transfer_data_done(struct ftdi_transfer_control *tc);
+ void ftdi_transfer_data_cancel(struct ftdi_transfer_control *tc, struct timeval * to);
int ftdi_set_bitmode(struct ftdi_context *ftdi, unsigned char bitmask, unsigned char mode);
int ftdi_disable_bitbang(struct ftdi_context *ftdi);