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dmaengine: at_hdmac: take maxburst from slave configuration

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The maxburst/chunk size was taken from the private slave DMA data structure.
Use the common API provided by DMA_SLAVE_CONFIG to setup src/dst maxburst
values.
The ctrla field is not needed anymore in the slave private structure nor the
header constants that were located in an architecture specific directory.
The at91sam9g45_devices.c file that was using this platform data is also
modified to remove this now useless data.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
This commit is contained in:
Nicolas Ferre
2012-05-10 12:17:41 +02:00
committed by Vinod Koul
parent b409ebfb14
commit 1dd1ea8eb4
4 changed files with 24 additions and 26 deletions
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7
drivers/dma/at_hdmac.c
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@@ -666,7 +666,8 @@ atc_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
return NULL;
}
ctrla = atslave->ctrla;
ctrla = ATC_SCSIZE(sconfig->src_maxburst)
| ATC_DCSIZE(sconfig->dst_maxburst);
ctrlb = ATC_IEN;
switch (direction) {
@@ -794,12 +795,12 @@ atc_dma_cyclic_fill_desc(struct dma_chan *chan, struct at_desc *desc,
enum dma_transfer_direction direction)
{
struct at_dma_chan *atchan = to_at_dma_chan(chan);
struct at_dma_slave *atslave = chan->private;
struct dma_slave_config *sconfig = &atchan->dma_sconfig;
u32 ctrla;
/* prepare common CRTLA value */
ctrla = atslave->ctrla
ctrla = ATC_SCSIZE(sconfig->src_maxburst)
| ATC_DCSIZE(sconfig->dst_maxburst)
| ATC_DST_WIDTH(reg_width)
| ATC_SRC_WIDTH(reg_width)
| period_len >> reg_width;