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commit 06ee8d96736834fa69ea594ad4efea198fb02225 Author: dongjiuzhu1 <[email protected]> AuthorDate: Tue Apr 11 15:51:39 2023 +0800 include/dma: support to config dst/src drq for every dma channel set dst_drq and src drq to dma channel configuration register of dmac Signed-off-by: dongjiuzhu1 <[email protected]> --- include/nuttx/dma/dma.h | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/include/nuttx/dma/dma.h b/include/nuttx/dma/dma.h index 3155f328ef..589c09baa7 100644 --- a/include/nuttx/dma/dma.h +++ b/include/nuttx/dma/dma.h @@ -137,12 +137,12 @@ (chan)->ops->start_cyclic(chan, callback, arg, dst, src, len, period_len) /**************************************************************************** - * Name: DMA_START_CYCLIC + * Name: DMA_START_LINK * * Description: - * Start the cyclic DMA transfer. + * Start the DMA link transfer. * - * Note: callback get called for each period length data DMA transfer. + * Note: callback get called when the DMA link transfer finish. * ****************************************************************************/ @@ -233,6 +233,8 @@ typedef CODE void (*dma_callback_t)(FAR struct dma_chan_s *chan, * where DMA data shall be read. If the source is memory this * may be ignored. Legal values: 1, 2, 4, 8. * src_width - same as dst_width but for the source(RX) mutatis mutandis. + * dst_drq - physical destination DMA request ID for this channel. + * src_drq - physical source DMA request ID for this channel. * * Note: the special value zero means to keep the current value without * change. @@ -246,6 +248,8 @@ struct dma_config_s unsigned int timeout; unsigned int dst_width; unsigned int src_width; + unsigned int dst_drq; + unsigned int src_drq; }; #ifdef CONFIG_DMA_LINK
