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path: root/drivers/dma/pl330.c
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Diffstat (limited to 'drivers/dma/pl330.c')
-rw-r--r--drivers/dma/pl330.c14
1 files changed, 9 insertions, 5 deletions
diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c
index 0b99af18f9a1..d5829c734fad 100644
--- a/drivers/dma/pl330.c
+++ b/drivers/dma/pl330.c
@@ -18,6 +18,7 @@
18#include <linux/amba/bus.h> 18#include <linux/amba/bus.h>
19#include <linux/amba/pl330.h> 19#include <linux/amba/pl330.h>
20#include <linux/pm_runtime.h> 20#include <linux/pm_runtime.h>
21#include <linux/scatterlist.h>
21 22
22#define NR_DEFAULT_DESC 16 23#define NR_DEFAULT_DESC 16
23 24
@@ -69,6 +70,10 @@ struct dma_pl330_chan {
69 * NULL if the channel is available to be acquired. 70 * NULL if the channel is available to be acquired.
70 */ 71 */
71 void *pl330_chid; 72 void *pl330_chid;
73
74 /* For D-to-M and M-to-D channels */
75 int burst_sz; /* the peripheral fifo width */
76 dma_addr_t fifo_addr;
72}; 77};
73 78
74struct dma_pl330_dmac { 79struct dma_pl330_dmac {
@@ -456,7 +461,7 @@ static struct dma_pl330_desc *pl330_get_desc(struct dma_pl330_chan *pch)
456 461
457 if (peri) { 462 if (peri) {
458 desc->req.rqtype = peri->rqtype; 463 desc->req.rqtype = peri->rqtype;
459 desc->req.peri = peri->peri_id; 464 desc->req.peri = pch->chan.chan_id;
460 } else { 465 } else {
461 desc->req.rqtype = MEMTOMEM; 466 desc->req.rqtype = MEMTOMEM;
462 desc->req.peri = 0; 467 desc->req.peri = 0;
@@ -582,7 +587,7 @@ pl330_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
582 struct dma_pl330_peri *peri = chan->private; 587 struct dma_pl330_peri *peri = chan->private;
583 struct scatterlist *sg; 588 struct scatterlist *sg;
584 unsigned long flags; 589 unsigned long flags;
585 int i, burst_size; 590 int i;
586 dma_addr_t addr; 591 dma_addr_t addr;
587 592
588 if (unlikely(!pch || !sgl || !sg_len || !peri)) 593 if (unlikely(!pch || !sgl || !sg_len || !peri))
@@ -598,8 +603,7 @@ pl330_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
598 return NULL; 603 return NULL;
599 } 604 }
600 605
601 addr = peri->fifo_addr; 606 addr = pch->fifo_addr;
602 burst_size = peri->burst_sz;
603 607
604 first = NULL; 608 first = NULL;
605 609
@@ -647,7 +651,7 @@ pl330_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
647 sg_dma_address(sg), addr, sg_dma_len(sg)); 651 sg_dma_address(sg), addr, sg_dma_len(sg));
648 } 652 }
649 653
650 desc->rqcfg.brst_size = burst_size; 654 desc->rqcfg.brst_size = pch->burst_sz;
651 desc->rqcfg.brst_len = 1; 655 desc->rqcfg.brst_len = 1;
652 } 656 }
653 657