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Commit 749d0d4b authored by Abhishek Sahu's avatar Abhishek Sahu Committed by Vinod Koul
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dmaengine: qcom: bam_dma: add command descriptor flag 



If DMA_PREP_CMD flag is passed in prep_slave_sg then peripheral
driver has passed the data is in BAM command descriptor format
and BAM driver should set CMD bit for each of the HW descriptors.

Signed-off-by: default avatarAbhishek Sahu <absahu@codeaurora.org>
Signed-off-by: default avatarVinod Koul <vinod.koul@intel.com>
parent dfebb055

drivers/dma/qcom/bam_dma.c

+5 −1
Original line number Diff line number Diff line
@@ -65,6 +65,7 @@ struct bam_desc_hw { 
#define DESC_FLAG_EOT BIT(14)

#define DESC_FLAG_EOB BIT(13)

#define DESC_FLAG_NWD BIT(12)

#define DESC_FLAG_CMD BIT(11)



struct bam_async_desc {

	struct virt_dma_desc vd;
@@ -645,6 +646,9 @@ static struct dma_async_tx_descriptor *bam_prep_slave_sg(struct dma_chan *chan, 
		unsigned int curr_offset = 0;



		do {

			if (flags & DMA_PREP_CMD)

				desc->flags |= cpu_to_le16(DESC_FLAG_CMD);



			desc->addr = cpu_to_le32(sg_dma_address(sg) +

						 curr_offset);
@@ -960,7 +964,7 @@ static void bam_start_dma(struct bam_chan *bchan) 


	/* set any special flags on the last descriptor */

	if (async_desc->num_desc == async_desc->xfer_len)

		desc[async_desc->xfer_len - 1].flags =

		desc[async_desc->xfer_len - 1].flags |=

					cpu_to_le16(async_desc->flags);

	else

		desc[async_desc->xfer_len - 1].flags |=