Commit 542fbc46 authored Jan 27, 2020 by Pierre-Yves MORDRET Committed by Vinod Koul Feb 24, 2020

dmaengine: stm32-mdma: enable descriptor_reuse



Enable descriptor reuse to allow client to resubmit already processed
descriptors in order to save descriptor creation time.

Signed-off-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com>
Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
Link: https://lore.kernel.org/r/20200127085334.13163-6-amelie.delaunay@st.com


Signed-off-by: Vinod Koul <vkoul@kernel.org>

parent 56cf8dda

drivers/dma/stm32-mdma.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -1618,6 +1618,8 @@ static int stm32_mdma_probe(struct platform_device *pdev)
		dd->device_resume = stm32_mdma_resume;
		dd->device_terminate_all = stm32_mdma_terminate_all;
		dd->device_synchronize = stm32_mdma_synchronize;
		dd->descriptor_reuse = true;

		dd->src_addr_widths = BIT(DMA_SLAVE_BUSWIDTH_1_BYTE) \|
		BIT(DMA_SLAVE_BUSWIDTH_2_BYTES) \|
		BIT(DMA_SLAVE_BUSWIDTH_4_BYTES) \|

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