On 22 June 2011 01:38, Per Forlin wrote:
> pre_req() runs dma_map_sg() and prepares the dma descriptor
> for the next mmc data transfer. post_req() runs dma_unmap_sg.
> If not calling pre_req() before mmci_request(), mmci_request()
> will prepare the cache and dma just like it did it before.
> It
pre_req() runs dma_map_sg() and prepares the dma descriptor
for the next mmc data transfer. post_req() runs dma_unmap_sg.
If not calling pre_req() before mmci_request(), mmci_request()
will prepare the cache and dma just like it did it before.
It is optional to use pre_req() and post_req() for mmci
pre_req() runs dma_map_sg() and prepares the dma descriptor
for the next mmc data transfer. post_req() runs dma_unmap_sg.
If not calling pre_req() before mmci_request(), mmci_request()
will prepare the cache and dma just like it did it before.
It is optional to use pre_req() and post_req() for mmci
