1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 /* 3 * Copyright (c) 2014 Google, Inc 4 */ 5 6 #ifndef __I2C_EEPROM 7 #define __I2C_EEPROM 8 9 struct i2c_eeprom_ops { 10 int (*read)(struct udevice *dev, int offset, uint8_t *buf, int size); 11 int (*write)(struct udevice *dev, int offset, const uint8_t *buf, 12 int size); 13 }; 14 15 struct i2c_eeprom { 16 /* The EEPROM's page size in byte */ 17 unsigned long pagesize; 18 /* The EEPROM's page width in bits (pagesize = 2^pagewidth) */ 19 unsigned pagewidth; 20 }; 21 22 /* 23 * i2c_eeprom_read() - read bytes from an I2C EEPROM chip 24 * 25 * @dev: Chip to read from 26 * @offset: Offset within chip to start reading 27 * @buf: Place to put data 28 * @size: Number of bytes to read 29 * 30 * @return 0 on success, -ve on failure 31 */ 32 int i2c_eeprom_read(struct udevice *dev, int offset, uint8_t *buf, int size); 33 34 /* 35 * i2c_eeprom_write() - write bytes to an I2C EEPROM chip 36 * 37 * @dev: Chip to write to 38 * @offset: Offset within chip to start writing 39 * @buf: Buffer containing data to write 40 * @size: Number of bytes to write 41 * 42 * @return 0 on success, -ve on failure 43 */ 44 int i2c_eeprom_write(struct udevice *dev, int offset, uint8_t *buf, int size); 45 46 #endif 47