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#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 */