blob: 710fefb1bf5a4b2f494d9c99df2cd9884222ae81 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
|
/*
* This file is part of the coreboot project.
*
* Copyright 2018 Google LLC
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef _SPI_BITBANG_H_
#define _SPI_BITBANG_H_
#include <types.h>
struct spi_bitbang_ops {
int (*get_miso)(const struct spi_bitbang_ops *ops);
void (*set_mosi)(const struct spi_bitbang_ops *ops, int value);
void (*set_clk)(const struct spi_bitbang_ops *ops, int value);
void (*set_cs)(const struct spi_bitbang_ops *ops, int value);
};
int spi_bitbang_claim_bus(const struct spi_bitbang_ops *ops);
void spi_bitbang_release_bus(const struct spi_bitbang_ops *ops);
int spi_bitbang_xfer(const struct spi_bitbang_ops *ops, const void *dout,
size_t bytes_out, void *din, size_t bytes_in);
#endif /* _SPI_BITBANG_H_ */
|
