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git.ipfire.org Git - thirdparty/u-boot.git/blob - include/i2c_eeprom.h
1 /* SPDX-License-Identifier: GPL-2.0+ */
3 * Copyright (c) 2014 Google, Inc
9 #include <linux/errno.h>
13 struct i2c_eeprom_ops
{
14 int (*read
)(struct udevice
*dev
, int offset
, uint8_t *buf
, int size
);
15 int (*write
)(struct udevice
*dev
, int offset
, const uint8_t *buf
,
17 int (*size
)(struct udevice
*dev
);
21 /* The EEPROM's page size in byte */
22 unsigned long pagesize
;
23 /* The EEPROM's capacity in bytes */
27 #if CONFIG_IS_ENABLED(I2C_EEPROM)
29 * i2c_eeprom_read() - read bytes from an I2C EEPROM chip
31 * @dev: Chip to read from
32 * @offset: Offset within chip to start reading
33 * @buf: Place to put data
34 * @size: Number of bytes to read
36 * Return: 0 on success, -ve on failure
38 int i2c_eeprom_read(struct udevice
*dev
, int offset
, uint8_t *buf
, int size
);
41 * i2c_eeprom_write() - write bytes to an I2C EEPROM chip
43 * @dev: Chip to write to
44 * @offset: Offset within chip to start writing
45 * @buf: Buffer containing data to write
46 * @size: Number of bytes to write
48 * Return: 0 on success, -ve on failure
50 int i2c_eeprom_write(struct udevice
*dev
, int offset
, const uint8_t *buf
,
54 * i2c_eeprom_size() - get size of I2C EEPROM chip
58 * Return: +ve size in bytes on success, -ve on failure
60 int i2c_eeprom_size(struct udevice
*dev
);
62 #else /* !I2C_EEPROM */
64 static inline int i2c_eeprom_read(struct udevice
*dev
, int offset
, uint8_t *buf
,
70 static inline int i2c_eeprom_write(struct udevice
*dev
, int offset
,
71 const uint8_t *buf
, int size
)
76 static inline int i2c_eeprom_size(struct udevice
*dev
)
81 #endif /* I2C_EEPROM */