1 /* SPDX-License-Identifier: GPL-2.0+ */
3 * Copyright (c) 2014 Google, Inc
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,
13 int (*size)(struct udevice *dev);
17 /* The EEPROM's page size in byte */
18 unsigned long pagesize;
19 /* The EEPROM's page width in bits (pagesize = 2^pagewidth) */
21 /* The EEPROM's capacity in bytes */
26 * i2c_eeprom_read() - read bytes from an I2C EEPROM chip
28 * @dev: Chip to read from
29 * @offset: Offset within chip to start reading
30 * @buf: Place to put data
31 * @size: Number of bytes to read
33 * @return 0 on success, -ve on failure
35 int i2c_eeprom_read(struct udevice *dev, int offset, uint8_t *buf, int size);
38 * i2c_eeprom_write() - write bytes to an I2C EEPROM chip
40 * @dev: Chip to write to
41 * @offset: Offset within chip to start writing
42 * @buf: Buffer containing data to write
43 * @size: Number of bytes to write
45 * @return 0 on success, -ve on failure
47 int i2c_eeprom_write(struct udevice *dev, int offset, uint8_t *buf, int size);
50 * i2c_eeprom_size() - get size of I2C EEPROM chip
54 * @return +ve size in bytes on success, -ve on failure
56 int i2c_eeprom_size(struct udevice *dev);