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Need a cancel method to stop DMA

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2280 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
2009-11-27 13:05:02 +00:00
parent 04f6edbaf7
commit 06743c5003
2 changed files with 23 additions and 0 deletions
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include/nuttx/sdio.h
+20
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@@ -444,6 +444,25 @@
#define SDIO_SENDSETUP(dev,buffer,nbytes) ((dev)->sendsetup(dev,buffer,nbytes))
/****************************************************************************
* Name: SDIO_CANCEL
*
* Description:
* Cancel the data transfer setup of SDIO_RECVSETUP, SDIO_SENDSETUP,
* SDIO_DMARECVSETUP or SDIO_DMASENDSETUP. This must be called to cancel
* the data transfer setup if, for some reason, you cannot perform the
* transfer.
*
* Input Parameters:
* dev - An instance of the SDIO device interface
*
* Returned Value:
* OK is success; a negated errno on failure
*
****************************************************************************/
#define SDIO_CANCEL(dev) ((dev)->cancel(dev))
/****************************************************************************
* Name: SDIO_WAITRESPONSE
*
@@ -708,6 +727,7 @@ struct sdio_dev_s
size_t nbytes);
int (*sendsetup)(FAR struct sdio_dev_s *dev, FAR const ubyte *buffer,
size_t nbytes);
int (*cancel)(FAR struct sdio_dev_s *dev);
int (*waitresponse)(FAR struct sdio_dev_s *dev, uint32 cmd);
int (*recvR1)(FAR struct sdio_dev_s *dev, uint32 cmd, uint32 *R1);