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authorAlexandre Bounine <alexandre.bounine@idt.com>2012-03-08 15:35:13 -0500
committerVinod Koul <vinod.koul@linux.intel.com>2012-03-21 19:20:23 +0530
commit185ecb5f4fd43911c35956d4cc7d94a1da30417f (patch)
treeebbdb7f15157d19d8af892cd7948d93947d09ec2 /drivers/dma/at_hdmac.c
parent16052827d98fbc13c31ebad560af4bd53e2b4dd5 (diff)
downloadblackbird-op-linux-185ecb5f4fd43911c35956d4cc7d94a1da30417f.tar.gz
blackbird-op-linux-185ecb5f4fd43911c35956d4cc7d94a1da30417f.zip
dmaengine: add context parameter to prep_slave_sg and prep_dma_cyclic
Add context parameter to device_prep_slave_sg() and device_prep_dma_cyclic() interfaces to allow passing client/target specific information associated with the data transfer. Modify all affected DMA engine drivers. Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Felipe Balbi <balbi@ti.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, 5 insertions, 2 deletions
diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c
index 5d225ddc7698..f24b16e455fd 100644
--- a/drivers/dma/at_hdmac.c
+++ b/drivers/dma/at_hdmac.c
@@ -639,11 +639,12 @@ err_desc_get:
* @sg_len: number of entries in @scatterlist
* @direction: DMA direction
* @flags: tx descriptor status flags
+ * @context: transaction context (ignored)
*/
static struct dma_async_tx_descriptor *
atc_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
unsigned int sg_len, enum dma_transfer_direction direction,
- unsigned long flags)
+ unsigned long flags, void *context)
{
struct at_dma_chan *atchan = to_at_dma_chan(chan);
struct at_dma_slave *atslave = chan->private;
@@ -840,10 +841,12 @@ atc_dma_cyclic_fill_desc(struct at_dma_slave *atslave, struct at_desc *desc,
* @buf_len: total number of bytes for the entire buffer
* @period_len: number of bytes for each period
* @direction: transfer direction, to or from device
+ * @context: transfer context (ignored)
*/
static struct dma_async_tx_descriptor *
atc_prep_dma_cyclic(struct dma_chan *chan, dma_addr_t buf_addr, size_t buf_len,
- size_t period_len, enum dma_transfer_direction direction)
+ size_t period_len, enum dma_transfer_direction direction,
+ void *context)
{
struct at_dma_chan *atchan = to_at_dma_chan(chan);
struct at_dma_slave *atslave = chan->private;
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