1 /* 2 * Copyright (c) 2015, Freescale Semiconductor, Inc. 3 * Copyright 2016-2020 NXP 4 * All rights reserved. 5 * 6 * SPDX-License-Identifier: BSD-3-Clause 7 */ 8 #ifndef _FSL_DSPI_EDMA_H_ 9 #define _FSL_DSPI_EDMA_H_ 10 11 #include "fsl_dspi.h" 12 #include "fsl_edma.h" 13 /*! 14 * @addtogroup dspi_edma_driver 15 * @{ 16 */ 17 18 /*********************************************************************************************************************** 19 * Definitions 20 **********************************************************************************************************************/ 21 22 /*! @name Driver version */ 23 /*@{*/ 24 /*! @brief DSPI EDMA driver version 2.2.4 */ 25 #define FSL_DSPI_EDMA_DRIVER_VERSION (MAKE_VERSION(2, 2, 4)) 26 /*@}*/ 27 28 /*! @brief DSPI EDMA max transfer data size calculate 29 * @param base DSPI peripheral base address. 30 * @param width Transfer width 31 */ 32 #define DSPI_EDMA_MAX_TRANSFER_SIZE(base, width) \ 33 ((1 == FSL_FEATURE_DSPI_HAS_SEPARATE_DMA_RX_TX_REQn(base)) ? ((width > 8U) ? 65534U : 32767U) : \ 34 ((width > 8U) ? 1022U : 511U)) 35 36 /*! 37 * @brief Forward declaration of the DSPI eDMA master handle typedefs. 38 */ 39 typedef struct _dspi_master_edma_handle dspi_master_edma_handle_t; 40 41 /*! 42 * @brief Forward declaration of the DSPI eDMA slave handle typedefs. 43 */ 44 typedef struct _dspi_slave_edma_handle dspi_slave_edma_handle_t; 45 46 /*! 47 * @brief Completion callback function pointer type. 48 * 49 * @param base DSPI peripheral base address. 50 * @param handle A pointer to the handle for the DSPI master. 51 * @param status Success or error code describing whether the transfer completed. 52 * @param userData An arbitrary pointer-dataSized value passed from the application. 53 */ 54 typedef void (*dspi_master_edma_transfer_callback_t)(SPI_Type *base, 55 dspi_master_edma_handle_t *handle, 56 status_t status, 57 void *userData); 58 /*! 59 * @brief Completion callback function pointer type. 60 * 61 * @param base DSPI peripheral base address. 62 * @param handle A pointer to the handle for the DSPI slave. 63 * @param status Success or error code describing whether the transfer completed. 64 * @param userData An arbitrary pointer-dataSized value passed from the application. 65 */ 66 typedef void (*dspi_slave_edma_transfer_callback_t)(SPI_Type *base, 67 dspi_slave_edma_handle_t *handle, 68 status_t status, 69 void *userData); 70 71 /*! @brief DSPI master eDMA transfer handle structure used for the transactional API. */ 72 struct _dspi_master_edma_handle 73 { 74 uint32_t bitsPerFrame; /*!< The desired number of bits per frame. */ 75 volatile uint32_t command; /*!< The desired data command. */ 76 volatile uint32_t lastCommand; /*!< The desired last data command. */ 77 78 uint8_t fifoSize; /*!< FIFO dataSize. */ 79 80 volatile bool 81 isPcsActiveAfterTransfer; /*!< Indicates whether the PCS signal keeps active after the last frame transfer.*/ 82 83 uint8_t nbytes; /*!< eDMA minor byte transfer count initially configured. */ 84 volatile uint8_t state; /*!< DSPI transfer state, see @ref _dspi_transfer_state.*/ 85 86 uint8_t *volatile txData; /*!< Send buffer. */ 87 uint8_t *volatile rxData; /*!< Receive buffer. */ 88 volatile size_t remainingSendByteCount; /*!< A number of bytes remaining to send.*/ 89 volatile size_t remainingReceiveByteCount; /*!< A number of bytes remaining to receive.*/ 90 size_t totalByteCount; /*!< A number of transfer bytes*/ 91 92 uint32_t rxBuffIfNull; /*!< Used if there is not rxData for DMA purpose.*/ 93 uint32_t txBuffIfNull; /*!< Used if there is not txData for DMA purpose.*/ 94 95 dspi_master_edma_transfer_callback_t callback; /*!< Completion callback. */ 96 void *userData; /*!< Callback user data. */ 97 98 edma_handle_t *edmaRxRegToRxDataHandle; /*!<edma_handle_t handle point used for RxReg to RxData buff*/ 99 edma_handle_t *edmaTxDataToIntermediaryHandle; /*!<edma_handle_t handle point used for TxData to Intermediary*/ 100 edma_handle_t *edmaIntermediaryToTxRegHandle; /*!<edma_handle_t handle point used for Intermediary to TxReg*/ 101 102 edma_tcd_t dspiSoftwareTCD[2]; /*!<SoftwareTCD , internal used*/ 103 }; 104 105 /*! @brief DSPI slave eDMA transfer handle structure used for the transactional API.*/ 106 struct _dspi_slave_edma_handle 107 { 108 uint32_t bitsPerFrame; /*!< The desired number of bits per frame. */ 109 110 uint8_t *volatile txData; /*!< Send buffer. */ 111 uint8_t *volatile rxData; /*!< Receive buffer. */ 112 volatile size_t remainingSendByteCount; /*!< A number of bytes remaining to send.*/ 113 volatile size_t remainingReceiveByteCount; /*!< A number of bytes remaining to receive.*/ 114 size_t totalByteCount; /*!< A number of transfer bytes*/ 115 116 uint32_t rxBuffIfNull; /*!< Used if there is not rxData for DMA purpose.*/ 117 uint32_t txBuffIfNull; /*!< Used if there is not txData for DMA purpose.*/ 118 uint32_t txLastData; /*!< Used if there is an extra byte when 16bits per frame for DMA purpose.*/ 119 120 uint8_t nbytes; /*!< eDMA minor byte transfer count initially configured. */ 121 122 volatile uint8_t state; /*!< DSPI transfer state.*/ 123 124 dspi_slave_edma_transfer_callback_t callback; /*!< Completion callback. */ 125 void *userData; /*!< Callback user data. */ 126 127 edma_handle_t *edmaRxRegToRxDataHandle; /*!<edma_handle_t handle point used for RxReg to RxData buff*/ 128 edma_handle_t *edmaTxDataToTxRegHandle; /*!<edma_handle_t handle point used for TxData to TxReg*/ 129 }; 130 131 /*********************************************************************************************************************** 132 * API 133 **********************************************************************************************************************/ 134 #if defined(__cplusplus) 135 extern "C" { 136 #endif /*_cplusplus*/ 137 138 /*! @name Transactional APIs 139 * @{ 140 */ 141 142 /*! 143 * @brief Initializes the DSPI master eDMA handle. 144 * 145 * This function initializes the DSPI eDMA handle which can be used for other DSPI transactional APIs. Usually, for a 146 * specified DSPI instance, call this API once to get the initialized handle. 147 * 148 * @note DSPI eDMA has separated (RX and TX as two sources) or shared (RX and TX are the same source) DMA request 149 * source. 150 * - For the separated DMA request source, enable and set the RX DMAMUX source for edmaRxRegToRxDataHandle and 151 * TX DMAMUX source for edmaIntermediaryToTxRegHandle. 152 * - For the shared DMA request source, enable and set the RX/RX DMAMUX source for the edmaRxRegToRxDataHandle. 153 * 154 * @param base DSPI peripheral base address. 155 * @param handle DSPI handle pointer to @ref _dspi_master_edma_handle. 156 * @param callback DSPI callback. 157 * @param userData A callback function parameter. 158 * @param edmaRxRegToRxDataHandle edmaRxRegToRxDataHandle pointer to edma_handle_t. 159 * @param edmaTxDataToIntermediaryHandle edmaTxDataToIntermediaryHandle pointer to edma_handle_t. 160 * @param edmaIntermediaryToTxRegHandle edmaIntermediaryToTxRegHandle pointer to edma_handle_t. 161 */ 162 void DSPI_MasterTransferCreateHandleEDMA(SPI_Type *base, 163 dspi_master_edma_handle_t *handle, 164 dspi_master_edma_transfer_callback_t callback, 165 void *userData, 166 edma_handle_t *edmaRxRegToRxDataHandle, 167 edma_handle_t *edmaTxDataToIntermediaryHandle, 168 edma_handle_t *edmaIntermediaryToTxRegHandle); 169 170 /*! 171 * @brief DSPI master transfer data using eDMA. 172 * 173 * This function transfers data using eDMA. This is a non-blocking function, which returns right away. When all data 174 * is transferred, the callback function is called. 175 * 176 * @note The max transfer size of each transfer depends on whether the instance's Tx/Rx shares the same DMA request. If 177 * <b>FSL_FEATURE_DSPI_HAS_SEPARATE_DMA_RX_TX_REQn(x)</b> is true, then the max transfer size is 32767 datawidth of 178 * data, otherwise is 511. 179 * 180 * @param base DSPI peripheral base address. 181 * @param handle A pointer to the @ref _dspi_master_edma_handle structure which stores the transfer state. 182 * @param transfer A pointer to the @ref dspi_transfer_t structure. 183 * @return status of status_t. 184 */ 185 status_t DSPI_MasterTransferEDMA(SPI_Type *base, dspi_master_edma_handle_t *handle, dspi_transfer_t *transfer); 186 187 /*! 188 * @brief Transfers a block of data using a eDMA method. 189 * 190 * This function transfers data using eDNA, the transfer mechanism is half-duplex. This is a non-blocking function, 191 * which returns right away. When all data is transferred, the callback function is called. 192 * 193 * @param base DSPI base pointer 194 * @param handle A pointer to the @ref _dspi_master_edma_handle structure which stores the transfer state. 195 * @param xfer A pointer to the @ref dspi_half_duplex_transfer_t structure. 196 * @return status of status_t. 197 */ 198 status_t DSPI_MasterHalfDuplexTransferEDMA(SPI_Type *base, 199 dspi_master_edma_handle_t *handle, 200 dspi_half_duplex_transfer_t *xfer); 201 202 /*! 203 * @brief DSPI master aborts a transfer which is using eDMA. 204 * 205 * This function aborts a transfer which is using eDMA. 206 * 207 * @param base DSPI peripheral base address. 208 * @param handle A pointer to the @ref _dspi_master_edma_handle structure which stores the transfer state. 209 */ 210 void DSPI_MasterTransferAbortEDMA(SPI_Type *base, dspi_master_edma_handle_t *handle); 211 212 /*! 213 * @brief Gets the master eDMA transfer count. 214 * 215 * This function gets the master eDMA transfer count. 216 * 217 * @param base DSPI peripheral base address. 218 * @param handle A pointer to the @ref _dspi_master_edma_handle structure which stores the transfer state. 219 * @param count A number of bytes transferred by the non-blocking transaction. 220 * @return status of status_t. 221 */ 222 status_t DSPI_MasterTransferGetCountEDMA(SPI_Type *base, dspi_master_edma_handle_t *handle, size_t *count); 223 224 /*! 225 * @brief Initializes the DSPI slave eDMA handle. 226 * 227 * This function initializes the DSPI eDMA handle which can be used for other DSPI transactional APIs. Usually, for a 228 * specified DSPI instance, call this API once to get the initialized handle. 229 * 230 * @note DSPI eDMA has separated (RN and TX in 2 sources) or shared (RX and TX are the same source) DMA request 231 * source. 232 * - For the separated DMA request source, enable and set the RX DMAMUX source for edmaRxRegToRxDataHandle and 233 * TX DMAMUX source for edmaTxDataToTxRegHandle. 234 * - For the shared DMA request source, enable and set the RX/RX DMAMUX source for the edmaRxRegToRxDataHandle. 235 * 236 * @param base DSPI peripheral base address. 237 * @param handle DSPI handle pointer to @ref _dspi_slave_edma_handle. 238 * @param callback DSPI callback. 239 * @param userData A callback function parameter. 240 * @param edmaRxRegToRxDataHandle edmaRxRegToRxDataHandle pointer to edma_handle_t. 241 * @param edmaTxDataToTxRegHandle edmaTxDataToTxRegHandle pointer to edma_handle_t. 242 */ 243 void DSPI_SlaveTransferCreateHandleEDMA(SPI_Type *base, 244 dspi_slave_edma_handle_t *handle, 245 dspi_slave_edma_transfer_callback_t callback, 246 void *userData, 247 edma_handle_t *edmaRxRegToRxDataHandle, 248 edma_handle_t *edmaTxDataToTxRegHandle); 249 250 /*! 251 * @brief DSPI slave transfer data using eDMA. 252 * 253 * This function transfers data using eDMA. This is a non-blocking function, which returns right away. When all data 254 * is transferred, the callback function is called. 255 * Note that the slave eDMA transfer doesn't support transfer_size is 1 when the bitsPerFrame is greater 256 * than eight. 257 * 258 * @note The max transfer size of each transfer depends on whether the instance's Tx/Rx shares the same DMA request. If 259 * <b>FSL_FEATURE_DSPI_HAS_SEPARATE_DMA_RX_TX_REQn(x)</b> is true, then the max transfer size is 32767 datawidth of 260 * data, otherwise is 511. 261 * 262 * @param base DSPI peripheral base address. 263 * @param handle A pointer to the @ref _dspi_slave_edma_handle structure which stores the transfer state. 264 * @param transfer A pointer to the @ref dspi_transfer_t structure. 265 * @return status of status_t. 266 */ 267 status_t DSPI_SlaveTransferEDMA(SPI_Type *base, dspi_slave_edma_handle_t *handle, dspi_transfer_t *transfer); 268 269 /*! 270 * @brief DSPI slave aborts a transfer which is using eDMA. 271 * 272 * This function aborts a transfer which is using eDMA. 273 * 274 * @param base DSPI peripheral base address. 275 * @param handle A pointer to the @ref _dspi_slave_edma_handle structure which stores the transfer state. 276 */ 277 void DSPI_SlaveTransferAbortEDMA(SPI_Type *base, dspi_slave_edma_handle_t *handle); 278 279 /*! 280 * @brief Gets the slave eDMA transfer count. 281 * 282 * This function gets the slave eDMA transfer count. 283 * 284 * @param base DSPI peripheral base address. 285 * @param handle A pointer to the @ref _dspi_slave_edma_handle structure which stores the transfer state. 286 * @param count A number of bytes transferred so far by the non-blocking transaction. 287 * @return status of status_t. 288 */ 289 status_t DSPI_SlaveTransferGetCountEDMA(SPI_Type *base, dspi_slave_edma_handle_t *handle, size_t *count); 290 291 /*!@}*/ 292 293 #if defined(__cplusplus) 294 } 295 #endif /*_cplusplus*/ 296 /*! 297 *@} 298 */ 299 300 #endif /*_FSL_DSPI_EDMA_H_*/ 301
