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yaml
---
r: 231593
b: refs/heads/master
c: 09b3c32
h: refs/heads/master
i:
  231591: 55cc780
v: v3
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Russell King - ARM Linux authored and Dan Williams committed Jan 5, 2011
1 parent 3d5a1fb commit 602c97a
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Showing 2 changed files with 10 additions and 12 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 4983a04fd2562986360b646b378f267308bc22c0
refs/heads/master: 09b3c323332206aaadfb7aa13efffa82e7719b35
20 changes: 9 additions & 11 deletions trunk/drivers/dma/amba-pl08x.c
Original file line number Diff line number Diff line change
Expand Up @@ -194,18 +194,10 @@ static void pl08x_start_txd(struct pl08x_dma_chan *plchan,
struct pl08x_driver_data *pl08x = plchan->host;
struct pl08x_phy_chan *phychan = plchan->phychan;
struct pl08x_lli *lli = &txd->llis_va[0];
u32 val, ccfg = txd->ccfg;
u32 val;

plchan->at = txd;

/* Assign the flow control signal to this channel */
if (txd->direction == DMA_TO_DEVICE)
/* Select signal as destination */
ccfg |= phychan->signal << PL080_CONFIG_DST_SEL_SHIFT;
else if (txd->direction == DMA_FROM_DEVICE)
/* Select signal as source */
ccfg |= phychan->signal << PL080_CONFIG_SRC_SEL_SHIFT;

/* Wait for channel inactive */
while (pl08x_phy_channel_busy(phychan))
cpu_relax();
Expand All @@ -214,13 +206,13 @@ static void pl08x_start_txd(struct pl08x_dma_chan *plchan,
"WRITE channel %d: csrc=0x%08x, cdst=0x%08x, "
"clli=0x%08x, cctl=0x%08x, ccfg=0x%08x\n",
phychan->id, lli->src, lli->dst, lli->lli, lli->cctl,
ccfg);
txd->ccfg);

writel(lli->src, phychan->base + PL080_CH_SRC_ADDR);
writel(lli->dst, phychan->base + PL080_CH_DST_ADDR);
writel(lli->lli, phychan->base + PL080_CH_LLI);
writel(lli->cctl, phychan->base + PL080_CH_CONTROL);
writel(ccfg, phychan->base + PL080_CH_CONFIG);
writel(txd->ccfg, phychan->base + PL080_CH_CONFIG);

/* Enable the DMA channel */
/* Do not access config register until channel shows as disabled */
Expand Down Expand Up @@ -1001,6 +993,12 @@ static int prep_phy_channel(struct pl08x_dma_chan *plchan,
return -EBUSY;
}
ch->signal = ret;

/* Assign the flow control signal to this channel */
if (txd->direction == DMA_TO_DEVICE)
txd->ccfg |= ch->signal << PL080_CONFIG_DST_SEL_SHIFT;
else if (txd->direction == DMA_FROM_DEVICE)
txd->ccfg |= ch->signal << PL080_CONFIG_SRC_SEL_SHIFT;
}

dev_dbg(&pl08x->adev->dev, "allocated physical channel %d and signal %d for xfer on %s\n",
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