56 lines
1.2 KiB
C
56 lines
1.2 KiB
C
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/*
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* Copyright (C) 2010 Apple Inc. All rights reserved.
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*
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* This document is the property of Apple Inc.
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* It is considered confidential and proprietary.
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*
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* This document may not be reproduced or transmitted in any form,
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* in whole or in part, without the express written permission of
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* Apple Inc.
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*/
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#ifndef __PL080DMAC_AE2__
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#define __PL080DMAC_AE2__
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#include <stdint.h>
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#include <platform/int.h>
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#include "ae2_dma.h"
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typedef enum {
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kPIOReceive = 0,
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kPIOTransmit = 1,
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kNumPIOs = 2,
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} ePIOType;
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enum { kBurstSize = 4 };
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typedef struct
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{
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ePIOType mWhichDevice;
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int_handler mInterruptHandler;
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void * mInterruptHandlerData;
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DMALinkedListItem mCurrentDMAItem;
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uint32_t mErrorCount[kAudioDevice_Last];
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} internal_pio_object_t;
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void handleAudioDeviceInterrupt();
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/*
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setup pio. Set the DMA linked list for doing PIO operations.
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preps the pio_object for doing it's first pio op
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*/
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void setupPIO(internal_pio_object_t * pio_object, void *src, void *dst, DMALinkedListItem *chain, size_t bytesToTransfer);
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/*
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Startup PIO
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*/
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void startPIO(internal_pio_object_t * pio_object);
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/*
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Stop PIO
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*/
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void stopPIO(internal_pio_object_t * pio_object);
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#endif /* __PL080DMAC_AE2__ */
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