[PATCH RFC] media: OF: add field-active and sync-on-green endpoint properties

[Prabhakar Lad]

Hi Laurent,

On Wed, May 15, 2013 at 6:54 PM, Laurent Pinchart
<laurent.pinchart at ideasonboard.com> wrote:
> Hi Prabhakar,
>
> Thank you for the patch.
>
> On Wednesday 15 May 2013 18:22:29 Lad Prabhakar wrote:
>> From: Lad, Prabhakar <prabhakar.csengg at gmail.com>
>>
>> This patch adds "field-active" and "sync-on-green" as part of
>> endpoint properties and also support to parse them in the parser.
>>
>> Signed-off-by: Lad, Prabhakar <prabhakar.csengg at gmail.com>
>> Cc: Hans Verkuil <hans.verkuil at cisco.com>
>> Cc: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
>> Cc: Mauro Carvalho Chehab <mchehab at redhat.com>
>> Cc: Guennadi Liakhovetski <g.liakhovetski at gmx.de>
>> Cc: Sylwester Nawrocki <s.nawrocki at samsung.com>
>> Cc: Sakari Ailus <sakari.ailus at iki.fi>
>> Cc: Grant Likely <grant.likely at secretlab.ca>
>> Cc: Rob Herring <rob.herring at calxeda.com>
>> Cc: Rob Landley <rob at landley.net>
>> Cc: devicetree-discuss at lists.ozlabs.org
>> Cc: linux-doc at vger.kernel.org
>> Cc: linux-kernel at vger.kernel.org
>> Cc: davinci-linux-open-source at linux.davincidsp.com
>> Cc: Kyungmin Park <kyungmin.park at samsung.com>
>> ---
>>  .../devicetree/bindings/media/video-interfaces.txt |    4 ++++
>>  drivers/media/v4l2-core/v4l2-of.c                  |    6 ++++++
>>  include/media/v4l2-mediabus.h                      |    2 ++
>>  3 files changed, 12 insertions(+), 0 deletions(-)
>>
>> diff --git a/Documentation/devicetree/bindings/media/video-interfaces.txt
>> b/Documentation/devicetree/bindings/media/video-interfaces.txt index
>> e022d2d..6bf87d0 100644
>> --- a/Documentation/devicetree/bindings/media/video-interfaces.txt
>> +++ b/Documentation/devicetree/bindings/media/video-interfaces.txt
>> @@ -101,6 +101,10 @@ Optional endpoint properties
>>    array contains only one entry.
>>  - clock-noncontinuous: a boolean property to allow MIPI CSI-2
>> non-continuous clock mode.
>> +-field-active: a boolean property indicating active high filed ID output
>> + polarity is inverted.
>
> Looks like we already have field-even-active property to describe the level of
> the field signal. Could you please check whether it fulfills your use cases ?
> Sorry for not pointing you to it earlier.
>
I had looked at it earlier it only means "field signal level during the even
field data transmission" it only speaks of even filed. Ideally the field ID
output is set to logic 1 for odd field and set to 0 for even field, what I
want is to invert the FID out polarity when "field-active" property is set.

May be we rename "field-active" to "fid-pol" ?

Regards,
--Prabhakar Lad