Documentation: dmaengine: Document new dma_vec API

Document the dmaengine_prep_peripheral_dma_vec() API function, the
device_prep_peripheral_dma_vec() backend function, and the dma_vec
struct.

Sign

Documentation: dmaengine: Document new dma_vec API

Document the dmaengine_prep_peripheral_dma_vec() API function, the
device_prep_peripheral_dma_vec() backend function, and the dma_vec
struct.

Signed-off-by: Paul Cercueil <[email protected]>
Reviewed-by: Bagas Sanjaya <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vinod Koul <[email protected]>

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Documentation: driver-api: correct spelling

Correct spelling problems for Documentation/driver-api/ as reported
by codespell.

Signed-off-by: Randy Dunlap <[email protected]>
Cc: Mauro Carvalho

Documentation: driver-api: correct spelling

Correct spelling problems for Documentation/driver-api/ as reported
by codespell.

Signed-off-by: Randy Dunlap <[email protected]>
Cc: Mauro Carvalho Chehab <[email protected]>
Cc: [email protected]
Cc: Vishal Verma <[email protected]>
Cc: Dave Jiang <[email protected]>
Cc: [email protected]
Cc: Vinod Koul <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Acked-by: Dan Williams <[email protected]>
Acked-by: Song Liu <[email protected]>
Acked-by: Greg Kroah-Hartman <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jonathan Corbet <[email protected]>

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dmaengine: doc: client: Update for dmaengine_get_dma_device() usage

Client drivers should use the dmaengine_get_dma_device(chan) to get the
device pointer which should be used for DMA API for alloca

dmaengine: doc: client: Update for dmaengine_get_dma_device() usage

Client drivers should use the dmaengine_get_dma_device(chan) to get the
device pointer which should be used for DMA API for allocations and
mapping.

Signed-off-by: Peter Ujfalusi <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vinod Koul <[email protected]>

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dmaengine: Add support for repeating transactions

DMA engines used with displays perform 2D interleaved transfers to read
framebuffers from memory and feed the data to the display engine. As the
sam

dmaengine: Add support for repeating transactions

DMA engines used with displays perform 2D interleaved transfers to read
framebuffers from memory and feed the data to the display engine. As the
same framebuffer can be displayed for multiple frames, the DMA
transactions need to be repeated until a new framebuffer replaces the
current one. This feature is implemented natively by some DMA engines
that have the ability to repeat transactions and switch to a new
transaction at the end of a transfer without any race condition or frame
loss.

This patch implements support for this feature in the DMA engine API. A
new DMA_PREP_REPEAT transaction flag allows DMA clients to instruct the
DMA channel to repeat the transaction automatically until one or more
new transactions are issued on the channel (or until all active DMA
transfers are explicitly terminated with the dmaengine_terminate_*()
functions). A new DMA_REPEAT transaction type is also added for DMA
engine drivers to report their support of the DMA_PREP_REPEAT flag.

A new DMA_PREP_LOAD_EOT transaction flag is also introduced (with a
corresponding DMA_LOAD_EOT capability bit), as requested during the
review of v4. The flag instructs the DMA channel that the transaction
being queued should replace the active repeated transaction when the
latter terminates (at End Of Transaction). Not setting the flag will
result in the active repeated transaction to continue being repeated,
and the new transaction being silently ignored.

The DMA_PREP_REPEAT flag is currently supported for interleaved
transactions only. Its usage can easily be extended to cover more
transaction types simply by adding an appropriate check in the
corresponding dmaengine_prep_*() function.

Signed-off-by: Laurent Pinchart <[email protected]>
Reviewed-by: Peter Ujfalusi <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vinod Koul <[email protected]>

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docs: crypto: convert async-tx-api.txt to ReST format

- Place the txt index inside a comment;
- Use title and chapter markups;
- Adjust markups for numbered list;
- Mark literal blocks as such;
- Us

docs: crypto: convert async-tx-api.txt to ReST format

- Place the txt index inside a comment;
- Use title and chapter markups;
- Adjust markups for numbered list;
- Mark literal blocks as such;
- Use tables markup.
- Adjust indentation when needed.

Acked-By: Vinod Koul <[email protected]> # dmaengine
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
Link: https://lore.kernel.org/r/98977242130efe86d1200f7a167299d4c1c205c5.1592203650.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <[email protected]>

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dmaengine: doc: fix warnings/issues of client.rst

This fixed some warnings/issues of client.rst.
o Need a blank line for enumerated lists.
o Do not create section in enumerated list.
o Remove suf

dmaengine: doc: fix warnings/issues of client.rst

This fixed some warnings/issues of client.rst.
o Need a blank line for enumerated lists.
o Do not create section in enumerated list.
o Remove suffix ':' from section title.

Signed-off-by: Changbin Du <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vinod Koul <[email protected]>

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dmaengine: doc: Properly indent metadata title

The newly added metadata documentation title was not properly indented
resulting in doc build break:

Sphinx parallel build error:
docutils.utils.S

dmaengine: doc: Properly indent metadata title

The newly added metadata documentation title was not properly indented
resulting in doc build break:

Sphinx parallel build error:
docutils.utils.SystemMessage: /linux/Documentation/driver-api/dmaengine/client.rst:155: (SEVERE/4) Unexpected section title.

Optional: per descriptor metadata
---------------------------------

Fix this by doing the right indent

Reported-by: Michael Ellerman <[email protected]>
Fixes: 7d083ae98357 ("dmaengine: doc: Add sections for per descriptor metadata support")
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vinod Koul <[email protected]>

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dmaengine: doc: Add sections for per descriptor metadata support

Update the provider and client documentation with details about the
metadata support.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@

dmaengine: doc: Add sections for per descriptor metadata support

Update the provider and client documentation with details about the
metadata support.

Signed-off-by: Peter Ujfalusi <[email protected]>
Reviewed-by: Tero Kristo <[email protected]>
Tested-by: Keerthy <[email protected]>
Reviewed-by: Grygorii Strashko <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vinod Koul <[email protected]>

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doc:dmaengine: clarify DMA desc. pointer after submission

It clarifies that the DMA description pointer returned by
`dmaengine_prep_*` function should not be used after submission.

Signed-off-by: F

doc:dmaengine: clarify DMA desc. pointer after submission

It clarifies that the DMA description pointer returned by
`dmaengine_prep_*` function should not be used after submission.

Signed-off-by: Federico Vaga <[email protected]>
Signed-off-by: Jonathan Corbet <[email protected]>

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Documentation :dmaengine: clarify DMA desc. pointer after submission

It clarifies that the DMA description pointer returned by
`dmaengine_prep_*` function should not be used after submission.

Signe

Documentation :dmaengine: clarify DMA desc. pointer after submission

It clarifies that the DMA description pointer returned by
`dmaengine_prep_*` function should not be used after submission.

Signed-off-by: Federico Vaga <[email protected]>
Signed-off-by: Vinod Koul <[email protected]>

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dmaengine: doc : Fix warning "Title underline too short" while make xmldocs

This patch fix following warning during 'make xmldocs'

Documentation/driver-api/dmaengine/client.rst:188:
WARNING: Title

dmaengine: doc : Fix warning "Title underline too short" while make xmldocs

This patch fix following warning during 'make xmldocs'

Documentation/driver-api/dmaengine/client.rst:188:
WARNING: Title underline too short.

Further APIs:
------------

Signed-off-by: Masanari Iida <[email protected]>

Signed-off-by: Jonathan Corbet <[email protected]>

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dmaengine: doc: ReSTize client API doc

This converts and moves client API file with some format
changes for RST style

Signed-off-by: Vinod Koul <[email protected]>
Signed-off-by: Jonathan Corbet

dmaengine: doc: ReSTize client API doc

This converts and moves client API file with some format
changes for RST style

Signed-off-by: Vinod Koul <[email protected]>
Signed-off-by: Jonathan Corbet <[email protected]>

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