120142019SSimon Glass /* 220142019SSimon Glass * Copyright (c) 2014 Google, Inc 320142019SSimon Glass * 420142019SSimon Glass * SPDX-License-Identifier: GPL-2.0+ 520142019SSimon Glass */ 620142019SSimon Glass 720142019SSimon Glass #ifndef __I2C_EEPROM 820142019SSimon Glass #define __I2C_EEPROM 920142019SSimon Glass 1020142019SSimon Glass struct i2c_eeprom_ops { 1120142019SSimon Glass int (*read)(struct udevice *dev, int offset, uint8_t *buf, int size); 1220142019SSimon Glass int (*write)(struct udevice *dev, int offset, const uint8_t *buf, 1320142019SSimon Glass int size); 1420142019SSimon Glass }; 1520142019SSimon Glass 1620142019SSimon Glass struct i2c_eeprom { 17d7e28918Smario.six@gdsys.cc /* The EEPROM's page size in byte */ 18d7e28918Smario.six@gdsys.cc unsigned long pagesize; 19d7e28918Smario.six@gdsys.cc /* The EEPROM's page width in bits (pagesize = 2^pagewidth) */ 20d7e28918Smario.six@gdsys.cc unsigned pagewidth; 2120142019SSimon Glass }; 2220142019SSimon Glass 23*8880efbdSJonas Karlman /* 24*8880efbdSJonas Karlman * i2c_eeprom_read() - read bytes from an I2C EEPROM chip 25*8880efbdSJonas Karlman * 26*8880efbdSJonas Karlman * @dev: Chip to read from 27*8880efbdSJonas Karlman * @offset: Offset within chip to start reading 28*8880efbdSJonas Karlman * @buf: Place to put data 29*8880efbdSJonas Karlman * @size: Number of bytes to read 30*8880efbdSJonas Karlman * 31*8880efbdSJonas Karlman * @return 0 on success, -ve on failure 32*8880efbdSJonas Karlman */ 33*8880efbdSJonas Karlman int i2c_eeprom_read(struct udevice *dev, int offset, uint8_t *buf, int size); 34*8880efbdSJonas Karlman 35*8880efbdSJonas Karlman /* 36*8880efbdSJonas Karlman * i2c_eeprom_write() - write bytes to an I2C EEPROM chip 37*8880efbdSJonas Karlman * 38*8880efbdSJonas Karlman * @dev: Chip to write to 39*8880efbdSJonas Karlman * @offset: Offset within chip to start writing 40*8880efbdSJonas Karlman * @buf: Buffer containing data to write 41*8880efbdSJonas Karlman * @size: Number of bytes to write 42*8880efbdSJonas Karlman * 43*8880efbdSJonas Karlman * @return 0 on success, -ve on failure 44*8880efbdSJonas Karlman */ 45*8880efbdSJonas Karlman int i2c_eeprom_write(struct udevice *dev, int offset, uint8_t *buf, int size); 46*8880efbdSJonas Karlman 4720142019SSimon Glass #endif 48