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authorGuennadi Liakhovetski <g.liakhovetski@gmx.de>2012-01-18 10:14:25 +0100
committerVinod Koul <vinod.koul@linux.intel.com>2012-02-01 22:23:53 +0530
commite9c8d7a03e69093e4c33c5056a45c1233a42e8a4 (patch)
treeb9a37c891db8e273bf9ff177d4be00ec5050393a
parenta5044cddad2fba36c725a019a6cd0e3f286b13d0 (diff)
dma: sh_dma: not all SH DMAC implementations support MEMCPY
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>
-rw-r--r--drivers/dma/shdma.c3
-rw-r--r--include/linux/sh_dma.h1
2 files changed, 3 insertions, 1 deletions
diff --git a/drivers/dma/shdma.c b/drivers/dma/shdma.c
index 54043cd831c..812fd76e9c1 100644
--- a/drivers/dma/shdma.c
+++ b/drivers/dma/shdma.c
@@ -1262,7 +1262,8 @@ static int __init sh_dmae_probe(struct platform_device *pdev)
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)
dma_cap_set(DMA_SLAVE, shdev->common.cap_mask);
diff --git a/include/linux/sh_dma.h b/include/linux/sh_dma.h
index 8cd7fe59cf1..425450b980b 100644
--- a/include/linux/sh_dma.h
+++ b/include/linux/sh_dma.h
@@ -70,6 +70,7 @@ struct sh_dmae_pdata {
unsigned int needs_tend_set:1;
unsigned int no_dmars:1;
unsigned int chclr_present:1;
+ unsigned int slave_only:1;
};
/* DMA register */