int (*read_page)(struct nand_device_s *nand, uint32_t page, uint8_t *data, uint32_t data_size, uint8_t *oob, uint32_t oob_size);
int (*controller_ready)(struct nand_device_s *nand, int timeout);
int (*nand_ready)(struct nand_device_s *nand, int timeout);
int (*read_page)(struct nand_device_s *nand, uint32_t page, uint8_t *data, uint32_t data_size, uint8_t *oob, uint32_t oob_size);
int (*controller_ready)(struct nand_device_s *nand, int timeout);
int (*nand_ready)(struct nand_device_s *nand, int timeout);