Commit 5e742de9 authored by Devendra K Verma's avatar Devendra K Verma Committed by Vinod Koul
Browse files

dmaengine: dw-edma: Set status for callback_result 



DMA Engine has support for the callback_result which provides
the status of the request and the residue. This helps in
determining the correct status of the request and in
efficient resource management of the request.
The 'callback_result' method is preferred over the deprecated
'callback' method.

Signed-off-by: default avatarDevendra K Verma <devverma@amd.com>
Link: https://lore.kernel.org/r/20250821121505.318179-1-devverma@amd.com


Signed-off-by: default avatarVinod Koul <vkoul@kernel.org>
parent a33e3b66

drivers/dma/dw-edma/dw-edma-core.c

+22 −0
Original line number Diff line number Diff line
@@ -584,6 +584,25 @@ dw_edma_device_prep_interleaved_dma(struct dma_chan *dchan, 
	return dw_edma_device_transfer(&xfer);

}



static void dw_hdma_set_callback_result(struct virt_dma_desc *vd,

					enum dmaengine_tx_result result)

{

	u32 residue = 0;

	struct dw_edma_desc *desc;

	struct dmaengine_result *res;



	if (!vd->tx.callback_result)

		return;



	desc = vd2dw_edma_desc(vd);

	if (desc)

		residue = desc->alloc_sz - desc->xfer_sz;



	res = &vd->tx_result;

	res->result = result;

	res->residue = residue;

}



static void dw_edma_done_interrupt(struct dw_edma_chan *chan)

{

	struct dw_edma_desc *desc;
@@ -597,6 +616,8 @@ static void dw_edma_done_interrupt(struct dw_edma_chan *chan) 
		case EDMA_REQ_NONE:

			desc = vd2dw_edma_desc(vd);

			if (!desc->chunks_alloc) {

				dw_hdma_set_callback_result(vd,

							    DMA_TRANS_NOERROR);

				list_del(&vd->node);

				vchan_cookie_complete(vd);

			}
@@ -633,6 +654,7 @@ static void dw_edma_abort_interrupt(struct dw_edma_chan *chan) 
	spin_lock_irqsave(&chan->vc.lock, flags);

	vd = vchan_next_desc(&chan->vc);

	if (vd) {

		dw_hdma_set_callback_result(vd, DMA_TRANS_ABORTED);

		list_del(&vd->node);

		vchan_cookie_complete(vd);

	}