Re: [PATCH v4 02/14] Documentation: media: description of DMABUF importing in V4L2

[Mauro Carvalho Chehab <mchehab@redhat.com>]

Em 19-04-2012 11:32, Tomasz Stanislawski escreveu:
> On 04/17/2012 01:25 AM, Laurent Pinchart wrote:
>> Hi Tomasz,
>>
>> Thanks for the patch.
>>
>> On Friday 13 April 2012 17:47:44 Tomasz Stanislawski wrote:
>>> This patch adds description and usage examples for importing
>>> DMABUF file descriptor in V4L2.
>>>
>>> Signed-off-by: Tomasz Stanislawski <t.stanislaws@samsung.com>
>>> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
>>
>> [snip]
>>
>>> diff --git a/Documentation/DocBook/media/v4l/io.xml
>>> b/Documentation/DocBook/media/v4l/io.xml index b815929..dc5979d 100644
>>> --- a/Documentation/DocBook/media/v4l/io.xml
>>> +++ b/Documentation/DocBook/media/v4l/io.xml
>>> @@ -472,6 +472,162 @@ rest should be evident.</para>
>>>        </footnote></para>
>>>    </section>
>>>
>>> +  <section id="dmabuf">
>>> +    <title>Streaming I/O (DMA buffer importing)</title>
>>
>> This section is very similar to the Streaming I/O (User Pointers) section. Do 
>> you think we should merge the two ? I could handle that if you want.
>>
> 
> Hi Laurent,
> 
> One may find similar sentences in MMAP, USERPTR and DMABUF.
> Maybe the common parts like description of STREAMON/OFF,
> QBUF/DQBUF shuffling should be moved to separate section
> like "Streaming" :).
> 
> Maybe it is worth to introduce a separate patch for this change.
> 
> Frankly, I would prefer to keep the Doc in the current form till
> importer support gets merged. Later the Doc could be fixed.
> 
> BTW. What is the sense of merging userptr and dmabuf section
> if userptr is going to dropped in long-term?

I didn't read the rest of the thread, so sorry, if I'm making wrong assumptions...
Am I understanding wrong or are you saying that you want to drop userptr
from V4L2 API in long-term?

> 
> Regards,
> Tomasz Stanislawski