diff options
| author | Nicolas Ferre <nicolas.ferre@atmel.com> | 2011-08-05 11:43:44 +0000 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2011-08-19 18:40:04 +0530 |
| commit | d7db80801f8117cf210b9e2cd2c800e326d59fa2 (patch) | |
| tree | 27f954b51f2eed85d16ec1a54dacc0730c717116 /drivers/dma/at_hdmac.c | |
| parent | 3c477482bb9f976e5451c50be7d3d60ea6f88646 (diff) | |
| download | lwn-d7db80801f8117cf210b9e2cd2c800e326d59fa2.tar.gz lwn-d7db80801f8117cf210b9e2cd2c800e326d59fa2.zip | |
dmaengine: at_hdmac: fix way to specify cyclic capability
In this driver, we can trigger cyclic transfer on peripherals-DMA interfaces.
It is dependent on driver implementation but cannot depend on a platform
property: we remove the dma_has_cap(DMA_CYCLIC, ) test which has no meaning.
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma/at_hdmac.c')
| -rw-r--r-- | drivers/dma/at_hdmac.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c index d774800b9fa4..3b99dc62874b 100644 --- a/drivers/dma/at_hdmac.c +++ b/drivers/dma/at_hdmac.c @@ -1301,15 +1301,13 @@ static int __init at_dma_probe(struct platform_device *pdev) if (dma_has_cap(DMA_MEMCPY, atdma->dma_common.cap_mask)) atdma->dma_common.device_prep_dma_memcpy = atc_prep_dma_memcpy; - if (dma_has_cap(DMA_SLAVE, atdma->dma_common.cap_mask)) + if (dma_has_cap(DMA_SLAVE, atdma->dma_common.cap_mask)) { atdma->dma_common.device_prep_slave_sg = atc_prep_slave_sg; - - if (dma_has_cap(DMA_CYCLIC, atdma->dma_common.cap_mask)) + /* controller can do slave DMA: can trigger cyclic transfers */ + dma_cap_set(DMA_CYCLIC, atdma->dma_common.cap_mask); atdma->dma_common.device_prep_dma_cyclic = atc_prep_dma_cyclic; - - if (dma_has_cap(DMA_SLAVE, atdma->dma_common.cap_mask) || - dma_has_cap(DMA_CYCLIC, atdma->dma_common.cap_mask)) atdma->dma_common.device_control = atc_control; + } dma_writel(atdma, EN, AT_DMA_ENABLE); |