Messages in this thread Patch in this message | | | From | Boojin Kim <> | Subject | [PATCH v2 1/4] DMA: pl330: support burst mode for dev-to-mem and mem-to-dev transmit | Date | Fri, 22 Feb 2013 17:04:15 +0900 |
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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.kim@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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