Commit 17b3cf42 authored by Andy Shevchenko's avatar Andy Shevchenko Committed by Vinod Koul
Browse files

dmaengine: hsu: set maximum allowed segment size for DMA 



This tells, for example, IOMMU what the maximum size of a segment
the DMA controller can send.

Signed-off-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: default avatarVinod Koul <vinod.koul@intel.com>
parent c36a0176

drivers/dma/hsu/hsu.c

+2 −0
Original line number Diff line number Diff line
@@ -417,6 +417,8 @@ int hsu_dma_probe(struct hsu_dma_chip *chip) 


	hsu->dma.dev = chip->dev;



	dma_set_max_seg_size(hsu->dma.dev, HSU_CH_DxTSR_MASK);



	ret = dma_async_device_register(&hsu->dma);

	if (ret)

		return ret;

drivers/dma/hsu/hsu.h

+4 −0
Original line number Diff line number Diff line
@@ -55,6 +55,10 @@ 
#define HSU_CH_DCR_CHEI		BIT(23)

#define HSU_CH_DCR_CHTOI(x)	BIT(24 + (x))



/* Bits in HSU_CH_DxTSR */

#define HSU_CH_DxTSR_MASK	GENMASK(15, 0)

#define HSU_CH_DxTSR_TSR(x)	((x) & HSU_CH_DxTSR_MASK)



struct hsu_dma_sg {

	dma_addr_t addr;

	unsigned int len;