1 /*
2  * Copyright (c) 2017 - 2020, Broadcom
3  *
4  * SPDX-License-Identifier: BSD-3-Clause
5  */
6 
7 #ifndef SPI_H
8 #define SPI_H
9 
10 #include <stdint.h>
11 
12 #define SPI_XFER_BEGIN (1 << 0)	/* Assert CS before transfer */
13 #define SPI_XFER_END   (1 << 1)	/* De-assert CS after transfer */
14 #define SPI_XFER_QUAD  (1 << 2)
15 
16 int spi_init(void);
17 int spi_claim_bus(void);
18 void spi_release_bus(void);
19 int spi_xfer(uint32_t bitlen, const void *dout, void *din, uint32_t flags);
20 
21 #endif /* _SPI_H_ */
22