#ifndef __LINUX_SPI_EEPROM_H
  #define __LINUX_SPI_EEPROM_H
  
  #include <linux/memory.h>
  
  /*
   * Put one of these structures in platform_data for SPI EEPROMS handled
   * by the "at25" driver.  On SPI, most EEPROMS understand the same core
   * command set.  If you need to support EEPROMs that don't yet fit, add
   * flags to support those protocol options.  These values all come from
   * the chip datasheets.
   */
  struct spi_eeprom {
  	u32		byte_len;
  	char		name[10];
  	u16		page_size;		/* for writes */
  	u16		flags;
  #define	EE_ADDR1	0x0001			/*  8 bit addrs */
  #define	EE_ADDR2	0x0002			/* 16 bit addrs */
  #define	EE_ADDR3	0x0004			/* 24 bit addrs */
  #define	EE_READONLY	0x0008			/* disallow writes */
  
  	/*
  	 * Certain EEPROMS have a size that is larger than the number of address
  	 * bytes would allow (e.g. like M95040 from ST that has 512 Byte size
  	 * but uses only one address byte (A0 to A7) for addressing.) For
  	 * the extra address bit (A8, A16 or A24) bit 3 of the instruction byte
  	 * is used. This instruction bit is normally defined as don't care for
  	 * other AT25 like chips.
  	 */
  #define EE_INSTR_BIT3_IS_ADDR	0x0010
  
  	/* for exporting this chip's data to other kernel code */
  	void (*setup)(struct memory_accessor *mem, void *context);
  	void *context;
  };
  
  #endif /* __LINUX_SPI_EEPROM_H */