22 lines
475 B
C
22 lines
475 B
C
/*
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* Copyright (c) 2017 - 2020, Broadcom
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef SPI_H
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#define SPI_H
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#include <stdint.h>
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#define SPI_XFER_BEGIN (1 << 0) /* Assert CS before transfer */
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#define SPI_XFER_END (1 << 1) /* De-assert CS after transfer */
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#define SPI_XFER_QUAD (1 << 2)
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int spi_init(void);
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int spi_claim_bus(void);
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void spi_release_bus(void);
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int spi_xfer(uint32_t bitlen, const void *dout, void *din, uint32_t flags);
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#endif /* _SPI_H_ */
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