diff options
Diffstat (limited to 'drivers/dma/edma.c')
| -rw-r--r-- | drivers/dma/edma.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/dma/edma.c b/drivers/dma/edma.c index c6f60e9af8af..6e230006eb08 100644 --- a/drivers/dma/edma.c +++ b/drivers/dma/edma.c @@ -58,12 +58,15 @@ #define EDMA_DESCRIPTORS 16 struct edma_pset { + u32 len; + dma_addr_t addr; struct edmacc_param param; }; struct edma_desc { struct virt_dma_desc vdesc; struct list_head node; + enum dma_transfer_direction direction; int cyclic; int absync; int pset_nr; @@ -376,16 +379,20 @@ static int edma_config_pset(struct dma_chan *chan, struct edma_pset *epset, cidx = acnt * bcnt; } + epset->len = dma_length; + if (direction == DMA_MEM_TO_DEV) { src_bidx = acnt; src_cidx = cidx; dst_bidx = 0; dst_cidx = 0; + epset->addr = src_addr; } else if (direction == DMA_DEV_TO_MEM) { src_bidx = 0; src_cidx = 0; dst_bidx = acnt; dst_cidx = cidx; + epset->addr = dst_addr; } else if (direction == DMA_MEM_TO_MEM) { src_bidx = acnt; src_cidx = cidx; @@ -463,6 +470,7 @@ static struct dma_async_tx_descriptor *edma_prep_slave_sg( edesc->pset_nr = sg_len; edesc->residue = 0; + edesc->direction = direction; /* Allocate a PaRAM slot, if needed */ nslots = min_t(unsigned, MAX_NR_SG, sg_len); @@ -615,6 +623,7 @@ static struct dma_async_tx_descriptor *edma_prep_dma_cyclic( edesc->cyclic = 1; edesc->pset_nr = nslots; edesc->residue = buf_len; + edesc->direction = direction; dev_dbg(dev, "%s: channel=%d nslots=%d period_len=%zu buf_len=%zu\n", __func__, echan->ch_num, nslots, period_len, buf_len); |