Merge tag 'dmaengine-4.20-rc1' of git://git.infradead.org/users/vkoul/slave-dma

Pull dmaengine updates from Vinod Koul:

 - Support for ColdFire mcf5441x edma controller

 - Support for link list mode in sprd dma

 - More users of managed dmaenginem_async_device_register API

 - Cyclic mode support in owl dma driver

 - DT updates for renesas drivers, dma-jz4780 updates and support for
   JZ4770, JZ4740 and JZ4725B controllers

 - Removal of deprecated dma_slave_config direction in dmaengine
   drivers, few more users will be removed in next cycle and eventually
   removed.

 - Minor updates to idma64, ioat, pxa, ppc drivers

* tag 'dmaengine-4.20-rc1' of git://git.infradead.org/users/vkoul/slave-dma: (66 commits)
  dmaengine: ppc4xx: fix off-by-one build failure
  dmaengine: owl: Fix warnings generated during build
  dmaengine: fsl-edma: remove dma_slave_config direction usage
  dmaengine: rcar-dmac: set scatter/gather max segment size
  dmaengine: mmp_tdma: remove dma_slave_config direction usage
  dmaengine: ep93xx_dma: remove dma_slave_config direction usage
  dmaengine: k3dma: remove dma_slave_config direction usage
  dmaengine: k3dma: dont use direction for memcpy
  dmaengine: imx-dma: remove dma_slave_config direction usage
  dmaengine: idma: remove dma_slave_config direction usage
  dmaengine: hsu: remove dma_slave_config direction usage
  dmaengine: dw: remove dma_slave_config direction usage
  dmaengine: jz4740: remove dma_slave_config direction usage
  dmaengine: coh901318: remove dma_slave_config direction usage
  dmaengine: bcm2835: remove dma_slave_config direction usage
  dmaengine: at_hdmac: remove dma_slave_config direction usage
  dmaengine: owl: Add Slave and Cyclic mode support for Actions Semi Owl S900 SoC
  dmaengine: ioat: fix prototype of ioat_enumerate_channels
  dmaengine: stm32-dma: check whether length is aligned on FIFO threshold
  dt-bindings: dmaengine: usb-dmac: Add binding for r8a7744
  ...

1 files changed, 18 insertions, 3 deletions

diff --git a/drivers/dma/dma-jz4740.c b/drivers/dma/dma-jz4740.c
index afd5e10f8927..5253e3c0dc04 100644
--- a/drivers/dma/dma-jz4740.c
+++ b/drivers/dma/dma-jz4740.c
@@ -113,6 +113,7 @@ struct jz4740_dma_desc {
 struct jz4740_dmaengine_chan {
 	struct virt_dma_chan vchan;
 	unsigned int id;
+	struct dma_slave_config config;
 
 	dma_addr_t fifo_addr;
 	unsigned int transfer_shift;
@@ -203,8 +204,9 @@ static enum jz4740_dma_transfer_size jz4740_dma_maxburst(u32 maxburst)
 	return JZ4740_DMA_TRANSFER_SIZE_32BYTE;
 }
 
-static int jz4740_dma_slave_config(struct dma_chan *c,
-				   struct dma_slave_config *config)
+static int jz4740_dma_slave_config_write(struct dma_chan *c,
+				   struct dma_slave_config *config,
+				   enum dma_transfer_direction direction)
 {
 	struct jz4740_dmaengine_chan *chan = to_jz4740_dma_chan(c);
 	struct jz4740_dma_dev *dmadev = jz4740_dma_chan_get_dev(chan);
@@ -214,7 +216,7 @@ static int jz4740_dma_slave_config(struct dma_chan *c,
 	enum jz4740_dma_flags flags;
 	uint32_t cmd;
 
-	switch (config->direction) {
+	switch (direction) {
 	case DMA_MEM_TO_DEV:
 		flags = JZ4740_DMA_SRC_AUTOINC;
 		transfer_size = jz4740_dma_maxburst(config->dst_maxburst);
@@ -265,6 +267,15 @@ static int jz4740_dma_slave_config(struct dma_chan *c,
 	return 0;
 }
 
+static int jz4740_dma_slave_config(struct dma_chan *c,
+				   struct dma_slave_config *config)
+{
+	struct jz4740_dmaengine_chan *chan = to_jz4740_dma_chan(c);
+
+	memcpy(&chan->config, config, sizeof(*config));
+	return 0;
+}
+
 static int jz4740_dma_terminate_all(struct dma_chan *c)
 {
 	struct jz4740_dmaengine_chan *chan = to_jz4740_dma_chan(c);
@@ -407,6 +418,8 @@ static struct dma_async_tx_descriptor *jz4740_dma_prep_slave_sg(
 	desc->direction = direction;
 	desc->cyclic = false;
 
+	jz4740_dma_slave_config_write(c, &chan->config, direction);
+
 	return vchan_tx_prep(&chan->vchan, &desc->vdesc, flags);
 }
 
@@ -438,6 +451,8 @@ static struct dma_async_tx_descriptor *jz4740_dma_prep_dma_cyclic(
 	desc->direction = direction;
 	desc->cyclic = true;
 
+	jz4740_dma_slave_config_write(c, &chan->config, direction);
+
 	return vchan_tx_prep(&chan->vchan, &desc->vdesc, flags);
 }