Re: [PATCH RFC] drm: add of_graph endpoint helper to find possible CRTCs

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On Wed, Jul 9, 2014 at 11:16 AM, Russell King - ARM Linux
<linux@xxxxxxxxxxxxxxxx> wrote:
> On Thu, Jul 03, 2014 at 06:36:47PM -0400, Rob Clark wrote:
>> On Thu, Jul 3, 2014 at 12:49 PM, Russell King
>> <rmk+kernel@xxxxxxxxxxxxxxxx> wrote:
>> > Add a helper to allow encoders to find their possible CRTCs from the
>> > OF graph without having to re-implement this functionality.  We add a
>> > device_node to drm_crtc which corresponds with the port node in the
>> > DT description of the CRTC device.
>> >
>> > We can then scan the DRM device list for CRTCs to find their index,
>> > matching the appropriate CRTC using the port device_node, thus building
>> > up the possible CRTC mask.
>> >
>> > Signed-off-by: Russell King <rmk+kernel@xxxxxxxxxxxxxxxx>
>> > ---
>> > This helper will be shared between imx-drm and Armada DRM, and should
>> > be useful for other OF-based drivers.  At the moment, this is being
>> > sent for comments and acks; I need to build upon this patch in order
>> > to convert Armada DRM to DT.
>> >
>> >  drivers/gpu/drm/Makefile |  1 +
>> >  drivers/gpu/drm/drm_of.c | 65 ++++++++++++++++++++++++++++++++++++++++++++++++
>> >  include/drm/drm_crtc.h   |  2 ++
>> >  include/drm/drm_of.h     | 18 ++++++++++++++
>>
>> oh, probably also should get links in Documentation/DocBook/drm.tmpl
>
> Hmm... can you advise a suitable location... I've never touched that
> stuff before, and it seems I can't even get it to build on my machine:
>
> Warning(.../include/drm/drm_flip_work.h:68): No description found for parameter ')'
> Warning(.../include/drm/drm_flip_work.h:68): Excess struct/union/enum/typedef member 'fifo' description in 'drm_flip_work'
> Warning(.../include/drm/drm_flip_work.h:68): No description found for parameter ')'
> Warning(.../include/drm/drm_flip_work.h:68): Excess struct/union/enum/typedef member 'fifo' description in 'drm_flip_work'
>   DOCPROC Documentation/DocBook/w1.xml
>   DOCPROC Documentation/DocBook/writing_musb_glue_layer.xml
>   PDF     Documentation/DocBook/z8530book.pdf
> Making portrait pages on A4 paper (210mmx297mm)
> sh: /usr/share/xmlto/format/docbook/../fo/pdf: No such file or directory
> make[2]: *** [Documentation/DocBook/z8530book.pdf] Error 1
> make[2]: *** Waiting for unfinished jobs....
> make[1]: *** [pdfdocs] Error 2
> make: *** [sub-make] Error 2

hmm, I usually use 'make htmldocs'.. hadn't really bothered to try to
build pdf docs.   It was a while ago, but I think 'xmlto-tex' would be
what you need for fedora to get docs to build.  Hopefully the package
has a similar name on other distros.

There are unfortunately a lot of warnings..  the headerdoc stuff is
not always as clever as you would like.

BR,
-R


> I guess my install is too old for it.
>
> Thanks.
>
> --
> FTTC broadband for 0.8mile line: currently at 9.5Mbps down 400kbps up
> according to speedtest.net.
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