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authorNicolas Ferre <nicolas.ferre@atmel.com>2012-05-10 14:17:41 +0400
committerVinod Koul <vinod.koul@linux.intel.com>2012-05-15 07:17:18 +0400
commit1dd1ea8eb46a71201943148cc0ed3182cd04e288 (patch)
tree0d4c7f05f751d906aea6b0270956453bcd6520e5 /drivers/dma/at_hdmac.c
parentb409ebfb14a71b64e11b156dc82ede698480397e (diff)
downloadlinux-1dd1ea8eb46a71201943148cc0ed3182cd04e288.tar.xz
dmaengine: at_hdmac: take maxburst from slave configuration
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>
Diffstat (limited to 'drivers/dma/at_hdmac.c')
-rw-r--r--drivers/dma/at_hdmac.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c
index c057309c8ae5..7292aa87b2dd 100644
--- a/drivers/dma/at_hdmac.c
+++ b/drivers/dma/at_hdmac.c
@@ -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;