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| author | Haavard Skinnemoen <haavard.skinnemoen@atmel.com> | 2008-07-08 11:58:58 -0700 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2008-07-08 11:58:58 -0700 |
| commit | 848c536a37b8db4e461f14ca15fe29850151c822 (patch) | |
| tree | f4a88e92e31de28511e3a3de99200a77d2613dae /include/linux | |
| parent | 4a776f0aa922a552460192c07b56f4fe9cd82632 (diff) | |
| download | blackbird-op-linux-848c536a37b8db4e461f14ca15fe29850151c822.tar.gz blackbird-op-linux-848c536a37b8db4e461f14ca15fe29850151c822.zip | |
dmaengine: Add dma_client parameter to device_alloc_chan_resources
A DMA controller capable of doing slave transfers may need to know a
few things about the slave when preparing the channel. We don't want
to add this information to struct dma_channel since the channel hasn't
yet been bound to a client at this point.
Instead, pass a reference to the client requesting the channel to the
driver's device_alloc_chan_resources hook so that it can pick the
necessary information from the dma_client struct by itself.
[dan.j.williams@intel.com: fixed up fsldma and mv_xor]
Acked-by: Maciej Sosnowski <maciej.sosnowski@intel.com>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/dmaengine.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index 6432b8343220..ba89b0f5056e 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -281,7 +281,8 @@ struct dma_device { int dev_id; struct device *dev; - int (*device_alloc_chan_resources)(struct dma_chan *chan); + int (*device_alloc_chan_resources)(struct dma_chan *chan, + struct dma_client *client); void (*device_free_chan_resources)(struct dma_chan *chan); struct dma_async_tx_descriptor *(*device_prep_dma_memcpy)( |
