diff options
| author | Guennadi Liakhovetski <g.liakhovetski@gmx.de> | 2012-01-18 13:14:25 +0400 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@linux.intel.com> | 2012-02-01 20:53:53 +0400 |
| commit | e9c8d7a03e69093e4c33c5056a45c1233a42e8a4 (patch) | |
| tree | b9a37c891db8e273bf9ff177d4be00ec5050393a | |
| parent | a5044cddad2fba36c725a019a6cd0e3f286b13d0 (diff) | |
| download | linux-e9c8d7a03e69093e4c33c5056a45c1233a42e8a4.tar.xz | |
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.c | 3 | ||||
| -rw-r--r-- | include/linux/sh_dma.h | 1 |
2 files changed, 3 insertions, 1 deletions
diff --git a/drivers/dma/shdma.c b/drivers/dma/shdma.c index 54043cd831c8..812fd76e9c18 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 8cd7fe59cf1a..425450b980b8 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 */ |