1 files changed, 4 insertions, 19 deletions

diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
index 533680860865..8319101170fc 100644
--- a/include/linux/dmaengine.h
+++ b/include/linux/dmaengine.h
@@ -68,7 +68,6 @@ enum dma_transaction_type {
         DMA_MEMSET,
         DMA_MEMSET_SG,
         DMA_INTERRUPT,
-        DMA_SG,
         DMA_PRIVATE,
         DMA_ASYNC_TX,
         DMA_SLAVE,
@@ -186,6 +185,9 @@ struct dma_interleaved_template {
  *  on the result of this operation
  * @DMA_CTRL_REUSE: client can reuse the descriptor and submit again till
  *  cleared or freed
+ * @DMA_PREP_CMD: tell the driver that the data passed to DMA API is command
+ *  data and the descriptor should be in different format from normal
+ *  data descriptors.
  */
 enum dma_ctrl_flags {
         DMA_PREP_INTERRUPT = (1 << 0),
@@ -195,6 +197,7 @@ enum dma_ctrl_flags {
         DMA_PREP_CONTINUE = (1 << 4),
         DMA_PREP_FENCE = (1 << 5),
         DMA_CTRL_REUSE = (1 << 6),
+        DMA_PREP_CMD = (1 << 7),
 };
 
 /**
@@ -771,11 +774,6 @@ struct dma_device {
                 unsigned int nents, int value, unsigned long flags);
         struct dma_async_tx_descriptor *(*device_prep_dma_interrupt)(
                 struct dma_chan *chan, unsigned long flags);
-        struct dma_async_tx_descriptor *(*device_prep_dma_sg)(
-                struct dma_chan *chan,
-                struct scatterlist *dst_sg, unsigned int dst_nents,
-                struct scatterlist *src_sg, unsigned int src_nents,
-                unsigned long flags);
 
         struct dma_async_tx_descriptor *(*device_prep_slave_sg)(
                 struct dma_chan *chan, struct scatterlist *sgl,
@@ -905,19 +903,6 @@ static inline struct dma_async_tx_descriptor *dmaengine_prep_dma_memcpy(
                                                     len, flags);
 }
 
-static inline struct dma_async_tx_descriptor *dmaengine_prep_dma_sg(
-                struct dma_chan *chan,
-                struct scatterlist *dst_sg, unsigned int dst_nents,
-                struct scatterlist *src_sg, unsigned int src_nents,
-                unsigned long flags)
-{
-        if (!chan || !chan->device || !chan->device->device_prep_dma_sg)
-                return NULL;
-
-        return chan->device->device_prep_dma_sg(chan, dst_sg, dst_nents,
-                        src_sg, src_nents, flags);
-}
-
 /**
  * dmaengine_terminate_all() - Terminate all active DMA transfers
  * @chan: The channel for which to terminate the transfers