303 struct spi_nor {  struct
322 	enum spi_nor_protocol	read_proto;  argument
323 	enum spi_nor_protocol	write_proto;  argument
324 	enum spi_nor_protocol	reg_proto;  argument
329 	int (*prepare)(struct spi_nor *nor, enum spi_nor_ops ops);  argument
330 	void (*unprepare)(struct spi_nor *nor, enum spi_nor_ops ops);  argument
331 	int (*read_reg)(struct spi_nor *nor, u8 opcode, u8 *buf, int len);  argument
332 	int (*write_reg)(struct spi_nor *nor, u8 opcode, u8 *buf, int len);  argument
334 	ssize_t (*read)(struct spi_nor *nor, loff_t from,  argument
336 	ssize_t (*write)(struct spi_nor *nor, loff_t to,  argument
338 	int (*erase)(struct spi_nor *nor, loff_t offs);  argument
340 	int (*flash_lock)(struct spi_nor *nor, loff_t ofs, uint64_t len);  argument
341 	int (*flash_unlock)(struct spi_nor *nor, loff_t ofs, uint64_t len);  argument
342 	int (*flash_is_locked)(struct spi_nor *nor, loff_t ofs, uint64_t len);  argument
343 	int (*quad_enable)(struct spi_nor *nor);  argument
353 static inline void spi_nor_set_flash_node(struct spi_nor *nor,  in spi_nor_set_flash_node()  argument