Re: [RESEND PATCH v4 03/21] staging: media: tegra-video: fix .vidioc_enum_fmt_vid_cap to return all formats

[Luca Ceresoli]

Hello Hans,

On Wed, 29 Mar 2023 13:16:22 +0200
Hans Verkuil <hverkuil-cisco@xxxxxxxxx> wrote:

> Hi Luca,
> 
> I finally found the time to test this series. It looks OK, except for this patch.

Thank you very much for taking the time!

> The list of supported formats really has to be the intersection of what the tegra
> supports and what the sensor supports.
> 
> Otherwise you would advertise pixelformats that cannot be used, and the application
> would have no way of knowing that.

As far as I understand, I think we should rather make this driver fully
behave as an MC-centric device. It is already using MC quite
successfully after all.

Do you think this is correct?

If you do, then I think the plan would be:

 - Add the V4L2_CAP_IO_MC flag
 - As the mbus_code in get_format appropriately
 - Leave the changes in this patch unmodified otherwise

Best regards,
Luca

-- 
Luca Ceresoli, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com