diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2014-04-28 23:29:57 +0400 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2014-04-30 09:04:07 +0400 |
| commit | c2da2340e5818aa72b2e847f1f24b036742ea5c7 (patch) | |
| tree | f9fb339720f05aaeab9c7ed16ead683d1b05736f | |
| parent | b5088ad9630c0aa477a4ed57747b8b3fa8e4b86b (diff) | |
| download | linux-c2da2340e5818aa72b2e847f1f24b036742ea5c7.tar.xz | |
dmaengine: edma: Store transfer data in edma_desc and edma_pset
For granular accounting we need to store the direction and the
information for the individual psets:
- source or destination address, depending on direction
- length
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Joel Fernandes <joelf@ti.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| -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); |