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/ste_dma40.c b/drivers/dma/ste_dma40.c
index 1ea6d02d08ab..bdd41d4bfa8d 100644
--- a/drivers/dma/ste_dma40.c
+++ b/drivers/dma/ste_dma40.c
@@ -2289,7 +2289,8 @@ static struct dma_async_tx_descriptor *d40_prep_slave_sg(struct dma_chan *chan,
                                                          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 *d40_prep_slave_sg(struct dma_chan *chan,
 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;