3 files changed, 24 insertions, 9 deletions

diff --git a/include/linux/amba/pl08x.h b/include/linux/amba/pl08x.h
index e6e28f37d8ec..a22662c93981 100644
--- a/include/linux/amba/pl08x.h
+++ b/include/linux/amba/pl08x.h
@@ -47,6 +47,9 @@ enum {
  * @muxval: a number usually used to poke into some mux regiser to
  * mux in the signal to this channel
  * @cctl_opt: default options for the channel control register
+ * @device_fc: Flow Controller Settings for ccfg register. Only valid for slave
+ * channels. Fill with 'true' if peripheral should be flow controller. Direction
+ * will be selected at Runtime.
  * @addr: source/target address in physical memory for this DMA channel,
  * can be the address of a FIFO register for burst requests for example.
  * This can be left undefined if the PrimeCell API is used for configuring
@@ -65,6 +68,7 @@ struct pl08x_channel_data {
         int max_signal;
         u32 muxval;
         u32 cctl;
+        bool device_fc;
         dma_addr_t addr;
         bool circular_buffer;
         bool single;
@@ -77,13 +81,11 @@ struct pl08x_channel_data {
  * @addr: current address
  * @maxwidth: the maximum width of a transfer on this bus
  * @buswidth: the width of this bus in bytes: 1, 2 or 4
- * @fill_bytes: bytes required to fill to the next bus memory boundary
  */
 struct pl08x_bus_data {
         dma_addr_t addr;
         u8 maxwidth;
         u8 buswidth;
-        size_t fill_bytes;
 };
 
 /**
@@ -105,8 +107,16 @@ struct pl08x_phy_chan {
 
 /**
  * struct pl08x_txd - wrapper for struct dma_async_tx_descriptor
+ * @tx: async tx descriptor
+ * @node: node for txd list for channels
+ * @src_addr: src address of txd
+ * @dst_addr: dst address of txd
+ * @len: transfer len in bytes
+ * @direction: direction of transfer
  * @llis_bus: DMA memory address (physical) start for the LLIs
  * @llis_va: virtual memory address start for the LLIs
+ * @cctl: control reg values for current txd
+ * @ccfg: config reg values for current txd
  */
 struct pl08x_txd {
         struct dma_async_tx_descriptor tx;
diff --git a/include/linux/amba/pl330.h b/include/linux/amba/pl330.h
index cbee7de7dd36..d12f077a6daf 100644
--- a/include/linux/amba/pl330.h
+++ b/include/linux/amba/pl330.h
@@ -19,12 +19,8 @@ struct dma_pl330_peri {
          * Peri_Req i/f of the DMAC that is
          * peripheral could be reached from.
          */
-        u8 peri_id; /* {0, 31} */
+        u8 peri_id; /* specific dma id */
         enum pl330_reqtype rqtype;
-
-        /* For M->D and D->M Channels */
-        int burst_sz; /* in power of 2 */
-        dma_addr_t fifo_addr;
 };
 
 struct dma_pl330_platdata {
diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
index 8fbf40e0713c..ace51af4369f 100644
--- a/include/linux/dmaengine.h
+++ b/include/linux/dmaengine.h
@@ -24,8 +24,7 @@
 #include <linux/device.h>
 #include <linux/uio.h>
 #include <linux/dma-direction.h>
-
-struct scatterlist;
+#include <linux/scatterlist.h>
 
 /**
  * typedef dma_cookie_t - an opaque DMA cookie
@@ -519,6 +518,16 @@ static inline int dmaengine_slave_config(struct dma_chan *chan,
                         (unsigned long)config);
 }
 
+static inline struct dma_async_tx_descriptor *dmaengine_prep_slave_single(
+        struct dma_chan *chan, void *buf, size_t len,
+        enum dma_data_direction dir, unsigned long flags)
+{
+        struct scatterlist sg;
+        sg_init_one(&sg, buf, len);
+
+        return chan->device->device_prep_slave_sg(chan, &sg, 1, dir, flags);
+}
+
 static inline int dmaengine_terminate_all(struct dma_chan *chan)
 {
         return dmaengine_device_control(chan, DMA_TERMINATE_ALL, 0);