Merge branch 'topic/doc' into for-linus
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@ -111,40 +111,36 @@ The first thing you need to do in your driver is to allocate this
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structure. Any of the usual memory allocators will do, but you'll also
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need to initialize a few fields in there:
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- channels: should be initialized as a list using the
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- ``channels``: should be initialized as a list using the
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INIT_LIST_HEAD macro for example
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- src_addr_widths:
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- ``src_addr_widths``:
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should contain a bitmask of the supported source transfer width
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- dst_addr_widths:
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- ``dst_addr_widths``:
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should contain a bitmask of the supported destination transfer width
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- directions:
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- ``directions``:
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should contain a bitmask of the supported slave directions
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(i.e. excluding mem2mem transfers)
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- residue_granularity:
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- ``residue_granularity``:
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granularity of the transfer residue reported to dma_set_residue.
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This can be either:
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- Granularity of the transfer residue reported to dma_set_residue.
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This can be either:
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- Descriptor:
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your device doesn't support any kind of residue
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reporting. The framework will only know that a particular
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transaction descriptor is done.
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- Descriptor
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- Segment:
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your device is able to report which chunks have been transferred
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- Your device doesn't support any kind of residue
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reporting. The framework will only know that a particular
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transaction descriptor is done.
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- Burst:
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your device is able to report which burst have been transferred
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- Segment
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- Your device is able to report which chunks have been transferred
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- Burst
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- Your device is able to report which burst have been transferred
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- dev: should hold the pointer to the ``struct device`` associated
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to your current driver instance.
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- ``dev``: should hold the pointer to the ``struct device`` associated
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to your current driver instance.
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Supported transaction types
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---------------------------
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