blob: 3ad565684fe40f3f345872005221bd1016352764 [file] [log] [blame]
Tom Rini83d290c2018-05-06 17:58:06 -04001/* SPDX-License-Identifier: GPL-2.0+ */
Simon Glass20142012014-12-10 08:55:54 -07002/*
3 * Copyright (c) 2014 Google, Inc
Simon Glass20142012014-12-10 08:55:54 -07004 */
5
6#ifndef __I2C_EEPROM
7#define __I2C_EEPROM
8
9struct 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);
Robert Beckett033e18b2019-10-28 18:29:06 +000013 int (*size)(struct udevice *dev);
Simon Glass20142012014-12-10 08:55:54 -070014};
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;
Robert Beckett033e18b2019-10-28 18:29:06 +000019 /* The EEPROM's capacity in bytes */
20 unsigned long size;
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 *
Heinrich Schuchardt185f8122022-01-19 18:05:50 +010031 * Return: 0 on success, -ve on failure
Jonas Karlman8880efb2017-04-22 08:57:41 +000032 */
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 *
Heinrich Schuchardt185f8122022-01-19 18:05:50 +010043 * Return: 0 on success, -ve on failure
Jonas Karlman8880efb2017-04-22 08:57:41 +000044 */
45int i2c_eeprom_write(struct udevice *dev, int offset, uint8_t *buf, int size);
46
Robert Beckett033e18b2019-10-28 18:29:06 +000047/*
48 * i2c_eeprom_size() - get size of I2C EEPROM chip
49 *
50 * @dev: Chip to query
51 *
Heinrich Schuchardt185f8122022-01-19 18:05:50 +010052 * Return: +ve size in bytes on success, -ve on failure
Robert Beckett033e18b2019-10-28 18:29:06 +000053 */
54int i2c_eeprom_size(struct udevice *dev);
55
Simon Glass20142012014-12-10 08:55:54 -070056#endif