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| author |   Boris Brezillon <boris.brezillon@free-electrons.com> | 2017-01-27 17:42:01 +0100 |
|---|---|---|
| committer |   Vinod Koul <vinod.koul@intel.com> | 2017-01-31 09:03:20 +0530 |
| commit | 77d65d6f3d60cebb2dc24cf05408255a21bb6409 (patch) | |
| tree | 606a48fb0a9231c0e8c2886787b6b577883311db /include/linux/dmaengine.h | |
| parent | dmaengine: ipu: Make sure the interrupt routine checks all interrupts. (diff) | |
| download | wireguard-linux-77d65d6f3d60cebb2dc24cf05408255a21bb6409.tar.xz wireguard-linux-77d65d6f3d60cebb2dc24cf05408255a21bb6409.zip | |
dmaengine: Provide a wrapper for memcpy operations
Almost all ->device_prep_dma_xx() methods have a wrapper defined in
dmaengine.h. Add one for ->device_prep_dma_memcpy().
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'include/linux/dmaengine.h')
| -rw-r--r-- | include/linux/dmaengine.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index feee6ec6a13b..533680860865 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -894,6 +894,17 @@ static inline struct dma_async_tx_descriptor *dmaengine_prep_dma_memset( len, flags); } +static inline struct dma_async_tx_descriptor *dmaengine_prep_dma_memcpy( + struct dma_chan *chan, dma_addr_t dest, dma_addr_t src, + size_t len, unsigned long flags) +{ + if (!chan || !chan->device || !chan->device->device_prep_dma_memcpy) + return NULL; + + return chan->device->device_prep_dma_memcpy(chan, dest, src, + len, flags); +} + static inline struct dma_async_tx_descriptor *dmaengine_prep_dma_sg( struct dma_chan *chan, struct scatterlist *dst_sg, unsigned int dst_nents, |