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Simon Glass20142012014-12-10 08:55:54 -07001/*
2 * Copyright (c) 2014 Google, Inc
3 *
4 * SPDX-License-Identifier: GPL-2.0+
5 */
6
7#ifndef __I2C_EEPROM
8#define __I2C_EEPROM
9
10struct i2c_eeprom_ops {
11 int (*read)(struct udevice *dev, int offset, uint8_t *buf, int size);
12 int (*write)(struct udevice *dev, int offset, const uint8_t *buf,
13 int size);
14};
15
16struct i2c_eeprom {
mario.six@gdsys.ccd7e28912016-06-22 15:14:16 +020017 /* The EEPROM's page size in byte */
18 unsigned long pagesize;
19 /* The EEPROM's page width in bits (pagesize = 2^pagewidth) */
20 unsigned pagewidth;
Simon Glass20142012014-12-10 08:55:54 -070021};
22
Jonas Karlman8880efb2017-04-22 08:57:41 +000023/*
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 */
33int 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 */
45int i2c_eeprom_write(struct udevice *dev, int offset, uint8_t *buf, int size);
46
Simon Glass20142012014-12-10 08:55:54 -070047#endif