diff options
Diffstat (limited to 'src/include/spi_bitbang.h')
| -rw-r--r-- | src/include/spi_bitbang.h | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/src/include/spi_bitbang.h b/src/include/spi_bitbang.h new file mode 100644 index 0000000000..710fefb1bf --- /dev/null +++ b/src/include/spi_bitbang.h @@ -0,0 +1,32 @@ +/* + * 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_ */ |