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ARM: S3C64XX: DMA: Make src and dst transfer size same

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Some devices don't seem to work if the source and desitnation transfer
widths are not same. For example, SPI dma xfers, with 8bits/word,
don't work without this patch.

Signed-off-by: Jassi Brar <jassi.brar@samsung.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
This commit is contained in:
Jassi Brar 2009-11-05 13:44:45 +09:00 committed by Ben Dooks
parent 6d0b8627d5
commit 7507f39c57
1 changed files with 2 additions and 4 deletions
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6
arch/arm/plat-s3c64xx/dma.c
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@ -151,8 +151,6 @@ static void s3c64xx_dma_fill_lli(struct s3c2410_dma_chan *chan,
src = chan->dev_addr;
dst = data;
control0 = PL080_CONTROL_SRC_AHB2;
control0 |= (u32)chan->hw_width << PL080_CONTROL_SWIDTH_SHIFT;
control0 |= 2 << PL080_CONTROL_DWIDTH_SHIFT;
control0 |= PL080_CONTROL_DST_INCR;
break;
@ -160,8 +158,6 @@ static void s3c64xx_dma_fill_lli(struct s3c2410_dma_chan *chan,
src = data;
dst = chan->dev_addr;
control0 = PL080_CONTROL_DST_AHB2;
control0 |= (u32)chan->hw_width << PL080_CONTROL_DWIDTH_SHIFT;
control0 |= 2 << PL080_CONTROL_SWIDTH_SHIFT;
control0 |= PL080_CONTROL_SRC_INCR;
break;
default:
@ -173,6 +169,8 @@ static void s3c64xx_dma_fill_lli(struct s3c2410_dma_chan *chan,
control1 = size >> chan->hw_width; /* size in no of xfers */
control0 |= PL080_CONTROL_PROT_SYS; /* always in priv. mode */
control0 |= PL080_CONTROL_TC_IRQ_EN; /* always fire IRQ */
control0 |= (u32)chan->hw_width << PL080_CONTROL_DWIDTH_SHIFT;
control0 |= (u32)chan->hw_width << PL080_CONTROL_SWIDTH_SHIFT;
lli->src_addr = src;
lli->dst_addr = dst;