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 int (*size)(struct udevice *dev); 14 }; 15 16 struct i2c_eeprom { 17 /* The EEPROM's page size in byte */ 18 unsigned long pagesize; 19 /* The EEPROM's capacity in bytes */ 20 unsigned long size; 21 }; 22 23 /* 24 * i2c_eeprom_read() - read bytes from an I2C EEPROM chip 25 * 26 * @dev: Chip to read from 27 * @offset: Offset within chip to start reading 28 * @buf: Place to put data 29 * @size: Number of bytes to read 30 * 31 * @return 0 on success, -ve on failure 32 */ 33 int i2c_eeprom_read(struct udevice *dev, int offset, uint8_t *buf, int size); 34 35 /* 36 * i2c_eeprom_write() - write bytes to an I2C EEPROM chip 37 * 38 * @dev: Chip to write to 39 * @offset: Offset within chip to start writing 40 * @buf: Buffer containing data to write 41 * @size: Number of bytes to write 42 * 43 * @return 0 on success, -ve on failure 44 */ 45 int i2c_eeprom_write(struct udevice *dev, int offset, uint8_t *buf, int size); 46 47 /* 48 * i2c_eeprom_size() - get size of I2C EEPROM chip 49 * 50 * @dev: Chip to query 51 * 52 * @return +ve size in bytes on success, -ve on failure 53 */ 54 int i2c_eeprom_size(struct udevice *dev); 55 56 #endif 57