[PATCH v2 1/4] DMA: pl330: support burst mode for dev-to-mem and mem-to-dev transmit

[Boojin Kim]

This patch adds to support burst mode for dev-to-mem and mem-to-dev transmit

Change-Id: I9723e49383416773699cf7735168177c8d036f30
Signed-off-by: Boojin Kim <boojin....@samsung.com>
---
 drivers/dma/pl330.c |   12 +++++++-----
 1 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c
index 80680ee..c67f037 100644
--- a/drivers/dma/pl330.c
+++ b/drivers/dma/pl330.c
@@ -1271,10 +1271,11 @@ static inline int _ldst_devtomem(unsigned dry_run, u8 
buf[],
                const struct _xfer_spec *pxs, int cyc)
 {
        int off = 0;
+       enum pl330_cond cond = (pxs->r->cfg->brst_len == 1) ? SINGLE : BURST;

        while (cyc--) {
-               off += _emit_WFP(dry_run, &buf[off], SINGLE, pxs->r->peri);
-               off += _emit_LDP(dry_run, &buf[off], SINGLE, pxs->r->peri);
+               off += _emit_WFP(dry_run, &buf[off], cond, pxs->r->peri);
+               off += _emit_LDP(dry_run, &buf[off], cond, pxs->r->peri);
                off += _emit_ST(dry_run, &buf[off], ALWAYS);
                off += _emit_FLUSHP(dry_run, &buf[off], pxs->r->peri);
        }
@@ -1286,11 +1287,12 @@ static inline int _ldst_memtodev(unsigned dry_run, u8 
buf[],
                const struct _xfer_spec *pxs, int cyc)
 {
        int off = 0;
+       enum pl330_cond cond = (pxs->r->cfg->brst_len == 1) ? SINGLE : BURST;

        while (cyc--) {
-               off += _emit_WFP(dry_run, &buf[off], SINGLE, pxs->r->peri);
+               off += _emit_WFP(dry_run, &buf[off], cond, pxs->r->peri);
                off += _emit_LD(dry_run, &buf[off], ALWAYS);
-               off += _emit_STP(dry_run, &buf[off], SINGLE, pxs->r->peri);
+               off += _emit_STP(dry_run, &buf[off], cond, pxs->r->peri);
                off += _emit_FLUSHP(dry_run, &buf[off], pxs->r->peri);
        }

@@ -2835,7 +2837,7 @@ pl330_prep_slave_sg(struct dma_chan *chan, struct 
scatterlist *sgl,
                }

                desc->rqcfg.brst_size = pch->burst_sz;
-               desc->rqcfg.brst_len = 1;
+               desc->rqcfg.brst_len = pch->burst_len;
        }

        /* Return the last desc in the chain */
--
1.7.5.4



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