fsl_pdm_sdma.h

/*
 * Copyright (c) 2018, Freescale Semiconductor, Inc.
 * Copyright 2019 - 2020, NXP
 * All rights reserved.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */
 
#ifndef _FSL_PDM_SDMA_H_
#define _FSL_PDM_SDMA_H_
 
#include "fsl_pdm.h"
#include "fsl_sdma.h"
 
/*******************************************************************************
 * Definitions
 ******************************************************************************/
 
#define FSL_PDM_SDMA_DRIVER_VERSION (MAKE_VERSION(2, 7, 0)) 
 
typedef struct _pdm_sdma_handle pdm_sdma_handle_t;
 
typedef void (*pdm_sdma_callback_t)(PDM_Type *base, pdm_sdma_handle_t *handle, status_t status, void *userData);
 
struct _pdm_sdma_handle
{
    sdma_handle_t *dmaHandle;     
    uint8_t nbytes;               
    uint8_t fifoWidth;            
    uint8_t endChannel;           
    uint8_t channelNums;          
    uint32_t count;               
    uint32_t state;               
    uint32_t eventSource;         
    pdm_sdma_callback_t callback; 
    void *userData;               
    sdma_buffer_descriptor_t bdPool[PDM_XFER_QUEUE_SIZE]; 
    pdm_transfer_t pdmQueue[PDM_XFER_QUEUE_SIZE];         
    size_t transferSize[PDM_XFER_QUEUE_SIZE];             
    volatile uint8_t queueUser;                           
    volatile uint8_t queueDriver;                         
};
 
/*******************************************************************************
 * APIs
 ******************************************************************************/
#if defined(__cplusplus)
extern "C" {
#endif
 
void PDM_TransferCreateHandleSDMA(PDM_Type *base,
                                  pdm_sdma_handle_t *handle,
                                  pdm_sdma_callback_t callback,
                                  void *userData,
                                  sdma_handle_t *dmaHandle,
                                  uint32_t eventSource);
 
status_t PDM_TransferReceiveSDMA(PDM_Type *base, pdm_sdma_handle_t *handle, pdm_transfer_t *xfer);
 
void PDM_TransferAbortReceiveSDMA(PDM_Type *base, pdm_sdma_handle_t *handle);
 
void PDM_SetChannelConfigSDMA(PDM_Type *base,
                              pdm_sdma_handle_t *handle,
                              uint32_t channel,
                              const pdm_channel_config_t *config);
 
void PDM_TransferTerminateReceiveSDMA(PDM_Type *base, pdm_sdma_handle_t *handle);
 
#if defined(__cplusplus)
}
#endif
 
#endif