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Subject[PATCH] dma: mmp_pdma: fix warning about slave caps
Date
Fix the dmaengine complaint about missing slave caps :
- declare the available bus widths
- declare the available transfer types
- declare the residue calculation type

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
---
drivers/dma/mmp_pdma.c | 7 +++++++
1 file changed, 7 insertions(+)

diff --git a/drivers/dma/mmp_pdma.c b/drivers/dma/mmp_pdma.c
index 1b82bd6..cadd9e5 100644
--- a/drivers/dma/mmp_pdma.c
+++ b/drivers/dma/mmp_pdma.c
@@ -1018,6 +1018,9 @@ static int mmp_pdma_probe(struct platform_device *op)
struct resource *iores;
int i, ret, irq = 0;
int dma_channels = 0, irq_num = 0;
+ const enum dma_slave_buswidth widths =
+ DMA_SLAVE_BUSWIDTH_1_BYTE | DMA_SLAVE_BUSWIDTH_2_BYTES |
+ DMA_SLAVE_BUSWIDTH_4_BYTES;

pdev = devm_kzalloc(&op->dev, sizeof(*pdev), GFP_KERNEL);
if (!pdev)
@@ -1085,6 +1088,10 @@ static int mmp_pdma_probe(struct platform_device *op)
pdev->device.device_config = mmp_pdma_config;
pdev->device.device_terminate_all = mmp_pdma_terminate_all;
pdev->device.copy_align = PDMA_ALIGNMENT;
+ pdev->device.src_addr_widths = widths;
+ pdev->device.dst_addr_widths = widths;
+ pdev->device.directions = BIT(DMA_MEM_TO_DEV) | BIT(DMA_DEV_TO_MEM);
+ pdev->device.residue_granularity = DMA_RESIDUE_GRANULARITY_DESCRIPTOR;

if (pdev->dev->coherent_dma_mask)
dma_set_mask(pdev->dev, pdev->dev->coherent_dma_mask);
--
2.1.0


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