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c3cf06f1a3
All identifiers, regardless of use, that start with two underscores are reserved. This means they can't be used in header guards. The style that this project is now to use the full name of the file in capital letters followed by 'H'. For example, for a file called "uart_example.h", the header guard is UART_EXAMPLE_H. The exceptions are files that are imported from other projects: - CryptoCell driver - dt-bindings folders - zlib headers Change-Id: I50561bf6c88b491ec440d0c8385c74650f3c106e Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
40 lines
1.1 KiB
C
40 lines
1.1 KiB
C
/*
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* Copyright (C) 2018 Marvell International Ltd.
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* Copyright (C) 2018 Icenowy Zheng <icenowy@aosc.io>
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*
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* SPDX-License-Identifier: BSD-3-Clause
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* https://spdx.org/licenses
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*/
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/* This driver provides support for Mentor Graphics MI2CV IP core */
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#ifndef MI2CV_H
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#define MI2CV_H
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#include <stdint.h>
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/*
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* Initialization, must be called once on start up, may be called
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* repeatedly to change the speed and slave addresses.
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*/
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void i2c_init(void *i2c_base);
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/*
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* Read/Write interface:
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* chip: I2C chip address, range 0..127
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* addr: Memory (register) address within the chip
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* alen: Number of bytes to use for addr (typically 1, 2 for larger
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* memories, 0 for register type devices with only one
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* register)
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* buffer: Where to read/write the data
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* len: How many bytes to read/write
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*
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* Returns: 0 on success, not 0 on failure
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*/
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int i2c_read(uint8_t chip,
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unsigned int addr, int alen, uint8_t *buffer, int len);
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int i2c_write(uint8_t chip,
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unsigned int addr, int alen, uint8_t *buffer, int len);
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#endif /* MI2CV_H */
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