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dmaengine: stm32-dma: Add max_burst support 

This patch sets the max_burst value supported by the STM32 DMA

Signed-off-by: M'boumba Cedric Madianga <cedric.madianga@gmail.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
M'boumba Cedric Madianga 2016-12-13 14:40:51 +01:00 committed by Vinod Koul
parent dc80867510
commit 276b0046ff
1 changed files with 2 additions and 0 deletions
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2
drivers/dma/stm32-dma.c
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@ -114,6 +114,7 @@
#define STM32_DMA_MAX_CHANNELS 0x08 #define STM32_DMA_MAX_CHANNELS 0x08
#define STM32_DMA_MAX_REQUEST_ID 0x08 #define STM32_DMA_MAX_REQUEST_ID 0x08
#define STM32_DMA_MAX_DATA_PARAM 0x03 #define STM32_DMA_MAX_DATA_PARAM 0x03
#define STM32_DMA_MAX_BURST 16
enum stm32_dma_width { enum stm32_dma_width {
STM32_DMA_BYTE, STM32_DMA_BYTE,
@ -1082,6 +1083,7 @@ static int stm32_dma_probe(struct platform_device *pdev)
BIT(DMA_SLAVE_BUSWIDTH_4_BYTES); BIT(DMA_SLAVE_BUSWIDTH_4_BYTES);
dd->directions = BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV); dd->directions = BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV);
dd->residue_granularity = DMA_RESIDUE_GRANULARITY_BURST; dd->residue_granularity = DMA_RESIDUE_GRANULARITY_BURST;
dd->max_burst = STM32_DMA_MAX_BURST;
dd->dev = &pdev->dev; dd->dev = &pdev->dev;
INIT_LIST_HEAD(&dd->channels); INIT_LIST_HEAD(&dd->channels);