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dmaengine: add context parameter to prep_slave_sg and prep_dma_cyclic

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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>
This commit is contained in:
Alexandre Bounine
2012-03-08 15:35:13 -05:00
committed by Vinod Koul
parent 16052827d9
commit 185ecb5f4f
19 changed files with 49 additions and 30 deletions
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5
drivers/dma/pl330.c
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@@ -2685,7 +2685,8 @@ static inline int get_burst_len(struct dma_pl330_desc *desc, size_t len)
static struct dma_async_tx_descriptor *pl330_prep_dma_cyclic(
struct dma_chan *chan, dma_addr_t dma_addr, size_t len,
size_t period_len, enum dma_transfer_direction direction)
size_t period_len, enum dma_transfer_direction direction,
void *context)
{
struct dma_pl330_desc *desc;
struct dma_pl330_chan *pch = to_pchan(chan);
@@ -2775,7 +2776,7 @@ pl330_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dst,
static struct dma_async_tx_descriptor *
pl330_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
unsigned int sg_len, enum dma_transfer_direction direction,
unsigned long flg)
unsigned long flg, void *context)
{
struct dma_pl330_desc *first, *desc = NULL;
struct dma_pl330_chan *pch = to_pchan(chan);