1*1bb92983SJerome Forissier /* SPDX-License-Identifier: BSD-2-Clause */ 2aca1545dSVictor Chong /* 3aca1545dSVictor Chong * Copyright (c) 2016, Linaro Limited 4aca1545dSVictor Chong * All rights reserved. 5aca1545dSVictor Chong * 6aca1545dSVictor Chong * Redistribution and use in source and binary forms, with or without 7aca1545dSVictor Chong * modification, are permitted provided that the following conditions are met: 8aca1545dSVictor Chong * 9aca1545dSVictor Chong * 1. Redistributions of source code must retain the above copyright notice, 10aca1545dSVictor Chong * this list of conditions and the following disclaimer. 11aca1545dSVictor Chong * 12aca1545dSVictor Chong * 2. Redistributions in binary form must reproduce the above copyright notice, 13aca1545dSVictor Chong * this list of conditions and the following disclaimer in the documentation 14aca1545dSVictor Chong * and/or other materials provided with the distribution. 15aca1545dSVictor Chong * 16aca1545dSVictor Chong * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 17aca1545dSVictor Chong * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18aca1545dSVictor Chong * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19aca1545dSVictor Chong * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 20aca1545dSVictor Chong * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21aca1545dSVictor Chong * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22aca1545dSVictor Chong * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23aca1545dSVictor Chong * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24aca1545dSVictor Chong * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25aca1545dSVictor Chong * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26aca1545dSVictor Chong * POSSIBILITY OF SUCH DAMAGE. 27aca1545dSVictor Chong */ 28aca1545dSVictor Chong 29aca1545dSVictor Chong #ifndef __SPI_H__ 30aca1545dSVictor Chong #define __SPI_H__ 31aca1545dSVictor Chong 32aca1545dSVictor Chong #include <types_ext.h> 33aca1545dSVictor Chong 34aca1545dSVictor Chong enum spi_mode { 35aca1545dSVictor Chong SPI_MODE0, 36aca1545dSVictor Chong SPI_MODE1, 37aca1545dSVictor Chong SPI_MODE2, 38aca1545dSVictor Chong SPI_MODE3 39aca1545dSVictor Chong }; 40aca1545dSVictor Chong 419a2efe04SVictor Chong enum spi_result { 429a2efe04SVictor Chong SPI_OK, 439a2efe04SVictor Chong SPI_ERR_CFG, 449a2efe04SVictor Chong SPI_ERR_PKTCNT, 459a2efe04SVictor Chong SPI_ERR_GENERIC 469a2efe04SVictor Chong }; 479a2efe04SVictor Chong 48aca1545dSVictor Chong struct spi_chip { 49aca1545dSVictor Chong const struct spi_ops *ops; 50aca1545dSVictor Chong }; 51aca1545dSVictor Chong 52aca1545dSVictor Chong struct spi_ops { 536356eeb2SVictor Chong void (*configure)(struct spi_chip *chip); 546356eeb2SVictor Chong void (*start)(struct spi_chip *chip); 559a2efe04SVictor Chong enum spi_result (*txrx8)(struct spi_chip *chip, uint8_t *wdat, 569a2efe04SVictor Chong uint8_t *rdat, size_t num_pkts); 579a2efe04SVictor Chong enum spi_result (*txrx16)(struct spi_chip *chip, uint16_t *wdat, 589a2efe04SVictor Chong uint16_t *rdat, size_t num_pkts); 596356eeb2SVictor Chong void (*end)(struct spi_chip *chip); 60aca1545dSVictor Chong }; 61aca1545dSVictor Chong 62aca1545dSVictor Chong #endif /* __SPI_H__ */ 63aca1545dSVictor Chong 64