1*54fd6939SJiyong Park /* 2*54fd6939SJiyong Park * Copyright (c) 2017 - 2020, Broadcom 3*54fd6939SJiyong Park * 4*54fd6939SJiyong Park * SPDX-License-Identifier: BSD-3-Clause 5*54fd6939SJiyong Park */ 6*54fd6939SJiyong Park 7*54fd6939SJiyong Park #ifndef SPI_H 8*54fd6939SJiyong Park #define SPI_H 9*54fd6939SJiyong Park 10*54fd6939SJiyong Park #include <stdint.h> 11*54fd6939SJiyong Park 12*54fd6939SJiyong Park #define SPI_XFER_BEGIN (1 << 0) /* Assert CS before transfer */ 13*54fd6939SJiyong Park #define SPI_XFER_END (1 << 1) /* De-assert CS after transfer */ 14*54fd6939SJiyong Park #define SPI_XFER_QUAD (1 << 2) 15*54fd6939SJiyong Park 16*54fd6939SJiyong Park int spi_init(void); 17*54fd6939SJiyong Park int spi_claim_bus(void); 18*54fd6939SJiyong Park void spi_release_bus(void); 19*54fd6939SJiyong Park int spi_xfer(uint32_t bitlen, const void *dout, void *din, uint32_t flags); 20*54fd6939SJiyong Park 21*54fd6939SJiyong Park #endif /* _SPI_H_ */ 22