--- zzzz-none-000/linux-4.4.60/include/linux/dmaengine.h	2017-04-08 07:53:53.000000000 +0000
+++ scorpion-1750e-727/linux-4.4.60/include/linux/dmaengine.h	2021-02-04 17:41:59.000000000 +0000
@@ -646,6 +646,8 @@
  *	be called after period_len bytes have been transferred.
  * @device_prep_interleaved_dma: Transfer expression in a generic way.
  * @device_prep_dma_imm_data: DMA's 8 byte immediate data to the dst address
+ * @device_prep_dma_custom_mapping: prepares a dma operation from dma driver
+ *	specific custom data
  * @device_config: Pushes a new configuration to a channel, return 0 or an error
  *	code
  * @device_pause: Pauses any transfer happening on a channel. Returns
@@ -731,12 +733,16 @@
 	struct dma_async_tx_descriptor *(*device_prep_dma_imm_data)(
 		struct dma_chan *chan, dma_addr_t dst, u64 data,
 		unsigned long flags);
+	struct dma_async_tx_descriptor *(*device_prep_dma_custom_mapping)(
+		struct dma_chan *chan, void *data,
+		unsigned long flags);
 
 	int (*device_config)(struct dma_chan *chan,
 			     struct dma_slave_config *config);
 	int (*device_pause)(struct dma_chan *chan);
 	int (*device_resume)(struct dma_chan *chan);
 	int (*device_terminate_all)(struct dma_chan *chan);
+	int (*device_terminate_all_graceful)(struct dma_chan *chan, bool graceful);
 
 	enum dma_status (*device_tx_status)(struct dma_chan *chan,
 					    dma_cookie_t cookie,
@@ -828,6 +834,15 @@
 			src_sg, src_nents, flags);
 }
 
+static inline struct dma_async_tx_descriptor *dmaengine_prep_dma_custom_mapping(
+		struct dma_chan *chan,
+		void *data,
+		unsigned long flags)
+{
+	return chan->device->device_prep_dma_custom_mapping(chan, data,
+			flags);
+}
+
 static inline int dmaengine_terminate_all(struct dma_chan *chan)
 {
 	if (chan->device->device_terminate_all)
@@ -835,6 +850,14 @@
 
 	return -ENOSYS;
 }
+
+static inline int dmaengine_terminate_all_graceful(struct dma_chan *chan, bool graceful)
+{
+	if (chan->device->device_terminate_all)
+		return chan->device->device_terminate_all_graceful(chan, graceful);
+
+	return -ENOSYS;
+}
 
 static inline int dmaengine_pause(struct dma_chan *chan)
 {