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include/dma: support to config dst/src drq for every dma channel

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set dst_drq and src drq to dma channel configuration register of dmac

Signed-off-by: dongjiuzhu1 <dongjiuzhu1@xiaomi.com>
This commit is contained in:
dongjiuzhu1 2023-04-11 15:51:39 +08:00 • committed by Xiang Xiao
parent 51475e4273
commit 06ee8d9673
1 changed files with 7 additions and 3 deletions
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10
include/nuttx/dma/dma.h
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@ -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