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dma: sh_dma: not all SH DMAC implementations support MEMCPY

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Add a flag to allow platforms to specify, whether a DMAC instance supports
the MEMCPY operation. To avoid regressions, preserve the current default.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
This commit is contained in:
Guennadi Liakhovetski
2012-01-18 10:14:25 +01:00
committed by Vinod Koul
parent a5044cddad
commit e9c8d7a03e
2 changed files with 3 additions and 1 deletions
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3
drivers/dma/shdma.c
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@@ -1262,7 +1262,8 @@ static int __init sh_dmae_probe(struct platform_device *pdev)
INIT_LIST_HEAD(&shdev->common.channels); INIT_LIST_HEAD(&shdev->common.channels);
dma_cap_set(DMA_MEMCPY, shdev->common.cap_mask); if (!pdata->slave_only)
dma_cap_set(DMA_MEMCPY, shdev->common.cap_mask);
if (pdata->slave && pdata->slave_num) if (pdata->slave && pdata->slave_num)
dma_cap_set(DMA_SLAVE, shdev->common.cap_mask); dma_cap_set(DMA_SLAVE, shdev->common.cap_mask);

1
include/linux/sh_dma.h
View File

@@ -70,6 +70,7 @@ struct sh_dmae_pdata {
unsigned int needs_tend_set:1; unsigned int needs_tend_set:1;
unsigned int no_dmars:1; unsigned int no_dmars:1;
unsigned int chclr_present:1; unsigned int chclr_present:1;
unsigned int slave_only:1;
}; };
/* DMA register */ /* DMA register */