i2c_eeprom.h
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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Copyright (c) 2014 Google, Inc
*/
#ifndef __I2C_EEPROM
#define __I2C_EEPROM
struct i2c_eeprom_ops {
int (*read)(struct udevice *dev, int offset, uint8_t *buf, int size);
int (*write)(struct udevice *dev, int offset, const uint8_t *buf,
int size);
int (*size)(struct udevice *dev);
};
struct i2c_eeprom {
/* The EEPROM's page size in byte */
unsigned long pagesize;
/* The EEPROM's page width in bits (pagesize = 2^pagewidth) */
unsigned pagewidth;
/* The EEPROM's capacity in bytes */
unsigned long size;
};
/*
* i2c_eeprom_read() - read bytes from an I2C EEPROM chip
*
* @dev: Chip to read from
* @offset: Offset within chip to start reading
* @buf: Place to put data
* @size: Number of bytes to read
*
* @return 0 on success, -ve on failure
*/
int i2c_eeprom_read(struct udevice *dev, int offset, uint8_t *buf, int size);
/*
* i2c_eeprom_write() - write bytes to an I2C EEPROM chip
*
* @dev: Chip to write to
* @offset: Offset within chip to start writing
* @buf: Buffer containing data to write
* @size: Number of bytes to write
*
* @return 0 on success, -ve on failure
*/
int i2c_eeprom_write(struct udevice *dev, int offset, uint8_t *buf, int size);
/*
* i2c_eeprom_size() - get size of I2C EEPROM chip
*
* @dev: Chip to query
*
* @return +ve size in bytes on success, -ve on failure
*/
int i2c_eeprom_size(struct udevice *dev);
#endif