[PATCH v2 1/4] DMA: pl330: support burst mode for dev-to-mem and mem-to-dev transmit
This patch adds to support burst mode for dev-to-mem and mem-to-dev transmit
Change-Id: I9723e49383416773699cf7735168177c8d036f30
Signed-off-by: Boojin Kim
---
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, [off], SINGLE, pxs->r->peri);
- off += _emit_LDP(dry_run, [off], SINGLE, pxs->r->peri);
+ off += _emit_WFP(dry_run, [off], cond, pxs->r->peri);
+ off += _emit_LDP(dry_run, [off], cond, pxs->r->peri);
off += _emit_ST(dry_run, [off], ALWAYS);
off += _emit_FLUSHP(dry_run, [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, [off], SINGLE, pxs->r->peri);
+ off += _emit_WFP(dry_run, [off], cond, pxs->r->peri);
off += _emit_LD(dry_run, [off], ALWAYS);
- off += _emit_STP(dry_run, [off], SINGLE, pxs->r->peri);
+ off += _emit_STP(dry_run, [off], cond, pxs->r->peri);
off += _emit_FLUSHP(dry_run, [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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[PATCH v2 1/4] DMA: pl330: support burst mode for dev-to-mem and mem-to-dev transmit
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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