| /* |
| * Copyright (C) 2018 Marvell International Ltd. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| * https://spdx.org/licenses |
| */ |
| |
| /* This driver provides I2C support for Marvell A8K and compatible SoCs */ |
| |
| #ifndef _A8K_I2C_H_ |
| #define _A8K_I2C_H_ |
| |
| #include <stdint.h> |
| |
| /* |
| * Initialization, must be called once on start up, may be called |
| * repeatedly to change the speed and slave addresses. |
| */ |
| void i2c_init(void *i2c_base); |
| |
| /* |
| * Read/Write interface: |
| * chip: I2C chip address, range 0..127 |
| * addr: Memory (register) address within the chip |
| * alen: Number of bytes to use for addr (typically 1, 2 for larger |
| * memories, 0 for register type devices with only one |
| * register) |
| * buffer: Where to read/write the data |
| * len: How many bytes to read/write |
| * |
| * Returns: 0 on success, not 0 on failure |
| */ |
| int i2c_read(uint8_t chip, |
| unsigned int addr, int alen, uint8_t *buffer, int len); |
| |
| int i2c_write(uint8_t chip, |
| unsigned int addr, int alen, uint8_t *buffer, int len); |
| #endif |