On 25-03-24, 10:37, Sugar Zhang wrote:
> This patch add support for interleaved transfer which used
> for interleaved audio or 2d video data transfer.
>
> for audio situation, we add 'nump' for number of period frames.
User? also why not use the cyclic api?
>
> Signed-off-by: Sugar Zhang <sugar.zhang@xxxxxxxxxxxxxx>
> ---
>
> include/linux/dmaengine.h | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
> index 752dbde..5263cde 100644
> --- a/include/linux/dmaengine.h
> +++ b/include/linux/dmaengine.h
> @@ -144,6 +144,7 @@ struct data_chunk {
> * Otherwise, destination is filled contiguously (icg ignored).
> * Ignored if dst_inc is false.
> * @numf: Number of frames in this template.
> + * @nump: Number of period frames in this template.
> * @frame_size: Number of chunks in a frame i.e, size of sgl[].
> * @sgl: Array of {chunk,icg} pairs that make up a frame.
> */
> @@ -156,6 +157,7 @@ struct dma_interleaved_template {
> bool src_sgl;
> bool dst_sgl;
> size_t numf;
> + size_t nump;
> size_t frame_size;
> struct data_chunk sgl[];
> };
> --
> 2.7.4
--
~Vinod
