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authorHaavard Skinnemoen <haavard.skinnemoen@atmel.com>2008-07-08 11:58:58 -0700
committerDan Williams <dan.j.williams@intel.com>2008-07-08 11:58:58 -0700
commit848c536a37b8db4e461f14ca15fe29850151c822 (patch)
treef4a88e92e31de28511e3a3de99200a77d2613dae /include/linux/dmaengine.h
parent4a776f0aa922a552460192c07b56f4fe9cd82632 (diff)
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op-kernel-dev-848c536a37b8db4e461f14ca15fe29850151c822.tar.gz
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/dmaengine.h')
-rw-r--r--include/linux/dmaengine.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
index 6432b83..ba89b0f 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)(
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