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>

1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/dma/imx-dma.c b/drivers/dma/imx-dma.c
index 20c1565a7486..304839a99ae5 100644
--- a/drivers/dma/imx-dma.c
+++ b/drivers/dma/imx-dma.c
@@ -354,7 +354,7 @@ static void imxdma_free_chan_resources(struct dma_chan *chan)
 static struct dma_async_tx_descriptor *imxdma_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 imxdma_channel *imxdmac = to_imxdma_chan(chan);
         struct scatterlist *sg;
@@ -405,7 +405,8 @@ static struct dma_async_tx_descriptor *imxdma_prep_slave_sg(
 
 static struct dma_async_tx_descriptor *imxdma_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)
+                size_t period_len, enum dma_transfer_direction direction,
+                void *context)
 {
         struct imxdma_channel *imxdmac = to_imxdma_chan(chan);
         struct imxdma_engine *imxdma = imxdmac->imxdma;