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>
diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c
index 1ea6d02..bdd41d4 100644
--- a/drivers/dma/ste_dma40.c
+++ b/drivers/dma/ste_dma40.c
@@ -2289,7 +2289,8 @@
struct scatterlist *sgl,
unsigned int sg_len,
enum dma_transfer_direction direction,
- unsigned long dma_flags)
+ unsigned long dma_flags,
+ void *context)
{
if (direction != DMA_DEV_TO_MEM && direction != DMA_MEM_TO_DEV)
return NULL;
@@ -2300,7 +2301,7 @@
static struct dma_async_tx_descriptor *
dma40_prep_dma_cyclic(struct dma_chan *chan, dma_addr_t dma_addr,
size_t buf_len, size_t period_len,
- enum dma_transfer_direction direction)
+ enum dma_transfer_direction direction, void *context)
{
unsigned int periods = buf_len / period_len;
struct dma_async_tx_descriptor *txd;