68 lines
2.4 KiB
C
68 lines
2.4 KiB
C
/****************************************************************************
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* arch/arm/src/cxd56xx/cxd56_dmac_common.h
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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#ifndef __ARCH_ARM_SRC_CXD56XX_CXD56_DMAC_COMMON_H
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#define __ARCH_ARM_SRC_CXD56XX_CXD56_DMAC_COMMON_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <stdint.h>
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/****************************************************************************
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* Public Types
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****************************************************************************/
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/* DMA_HANDLE provides an opaque reference that can be used to represent a
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* DMA channel.
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*/
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typedef void *DMA_HANDLE;
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/* Description:
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* This is the type of the callback that is used to inform the user of the
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* completion of the DMA.
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*
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* Input Parameters:
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* handle - Refers to the DMA channel or stream
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* status - A bit encoded value that provides the completion status.
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* See the DMASTATUS_* definitions above.
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* arg - A user-provided value that was provided when cxd56_dmastart()
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* was called.
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*/
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typedef void (*dma_callback_t)(DMA_HANDLE handle, uint8_t status, void *arg);
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/* Type of 'config' argument passed to cxd56_rxdmasetup() and
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* cxd56_txdmasetup.
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* See CXD56_DMA_* encodings above. If these encodings exceed 16-bits, then
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* this should be changed to a uint32_t.
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*/
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typedef struct
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{
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uint16_t channel_cfg;
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uint8_t dest_width;
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uint8_t src_width;
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} dma_config_t;
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#endif /* __ARCH_ARM_SRC_CXD56XX_CXD56_DMAC_COMMON_H */
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