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Commit dc808675 authored by M'boumba Cedric Madianga's avatar M'boumba Cedric Madianga Committed by Vinod Koul
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dmaengine: stm32-dma: Add synchronization support 



Implement the new device_synchronize() callback to allow proper
synchronization when stopping a channel.

Signed-off-by: default avatarM'boumba Cedric Madianga <cedric.madianga@gmail.com>
Signed-off-by: default avatarVinod Koul <vinod.koul@intel.com>
parent 2b12c558

drivers/dma/stm32-dma.c

+8 −0
Original line number Diff line number Diff line
@@ -403,6 +403,13 @@ static int stm32_dma_terminate_all(struct dma_chan *c) 
	return 0;

}



static void stm32_dma_synchronize(struct dma_chan *c)

{

	struct stm32_dma_chan *chan = to_stm32_dma_chan(c);



	vchan_synchronize(&chan->vchan);

}



static void stm32_dma_dump_reg(struct stm32_dma_chan *chan)

{

	struct stm32_dma_device *dmadev = stm32_dma_get_dev(chan);
@@ -1066,6 +1073,7 @@ static int stm32_dma_probe(struct platform_device *pdev) 
	dd->device_prep_dma_cyclic = stm32_dma_prep_dma_cyclic;

	dd->device_config = stm32_dma_slave_config;

	dd->device_terminate_all = stm32_dma_terminate_all;

	dd->device_synchronize = stm32_dma_synchronize;

	dd->src_addr_widths = BIT(DMA_SLAVE_BUSWIDTH_1_BYTE) |

		BIT(DMA_SLAVE_BUSWIDTH_2_BYTES) |

		BIT(DMA_SLAVE_BUSWIDTH_4_BYTES);