[PATCH RFC v3] media: OF: add video sync endpoint property

[Prabhakar Lad]

Hi Sylwester,

On Fri, Jul 12, 2013 at 2:45 AM, Sylwester Nawrocki
<sylvester.nawrocki at gmail.com> wrote:
> On 07/11/2013 01:41 PM, Prabhakar Lad wrote:
> [...]
>
>>>> diff --git a/drivers/media/v4l2-core/v4l2-of.c
>>>> b/drivers/media/v4l2-core/v4l2-of.c
>>>> index aa59639..1a54530 100644
>>>> --- a/drivers/media/v4l2-core/v4l2-of.c
>>>> +++ b/drivers/media/v4l2-core/v4l2-of.c
>>>> @@ -100,6 +100,26 @@ static void v4l2_of_parse_parallel_bus(const struct
>>>> device_node *node,
>>>>          if (!of_property_read_u32(node, "data-shift",&v))
>>>>                  bus->data_shift = v;
>>>>
>>>> +       if (!of_property_read_u32(node, "video-sync",&v)) {
>>>> +               switch (v) {
>>>> +               case V4L2_MBUS_VIDEO_SEPARATE_SYNC:
>>>> +                       flags |= V4L2_MBUS_VIDEO_SEPARATE_SYNC;
>>>
>>>
>>>
>>> I'm not convinced all those video sync types is something that really
>>> belongs
>>> to the flags field. In my understanding this field is supposed to hold
>>> only
>>> the _signal polarity_ information.
>>>
>>>
>> Ok, so there should be a function say v4l2_of_parse_signal_polarity()
>> to get the polarity alone then.
>
>
> I don't think this is required, I would just extend
> v4l2_of_parse_parallel_bus()
> function to also handle sync-on-green-active property.
>
If that is the case than I have to add a member say 'signal_polarity'
in struct v4l2_of_bus_parallel and assign the polarity to it.
Let me know if you are OK with it.

Regards,
--Prabhakar Lad