123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081 |
- /* SPDX-License-Identifier: GPL-2.0+ */
- /*
- * Copyright (c) 2014 Google, Inc
- */
- #ifndef __I2C_EEPROM
- #define __I2C_EEPROM
- struct udevice;
- 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 capacity in bytes */
- unsigned long size;
- };
- #if CONFIG_IS_ENABLED(I2C_EEPROM)
- /*
- * 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, const 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);
- #else /* !I2C_EEPROM */
- static inline int i2c_eeprom_read(struct udevice *dev, int offset, uint8_t *buf,
- int size)
- {
- return -ENOSYS;
- }
- static inline int i2c_eeprom_write(struct udevice *dev, int offset,
- const uint8_t *buf, int size)
- {
- return -ENOSYS;
- }
- static inline int i2c_eeprom_size(struct udevice *dev)
- {
- return -ENOSYS;
- }
- #endif /* I2C_EEPROM */
- #endif
|