Dne Po 7. září 2009 12:21:50 Robert Jarzmik napsal(a):
> Marek Vasut <marek.vasut@xxxxxxxxx> writes:
> > How's it supposed to get BGR555 if the pxa-camera doesnt support that ?
> > Will the v4l2 layer convert it or something ?
>
> In pxa_camera.c, function pxa_camera_get_formats() :
> > default:
> > /* Generic pass-through */
> > formats++;
> > if (xlate) {
> > xlate->host_fmt = icd->formats + idx;
> > xlate->cam_fmt = icd->formats + idx;
> > xlate->buswidth = icd->formats[idx].depth;
> > xlate++;
> > dev_dbg(ici->dev,
> > "Providing format %s in pass-through
> > mode\n", icd->formats[idx].name);
> > }
> > }
>
> "Pass-through" means that if a sensors provides a cc, ie. BGR555 for
> example, the bridge (pxa_camera) will "forward" to RAM the image in the
> very same cc (ie. BGR555). In that case, the bridge is a dummy "sensor to
> RAM" bus translator if you prefer.
>
> Marek, you should activate debug trace and watch for yourself. You can
> trust Guennadi, when he says it will work, well ... it will work.
>
> If it's out of technical curiousity, check the function above. If you're
> even more curious, there was a thread in linux-media about "RFC: bus
> configuration setup for sub-devices", a very interesting one, especially
> considering the "pass-through" issue.
That one should work for RGB565X ? (the piece of code you posted ?) It's
interesting it didnt work for me ... ok, I'll take it it works then, whatever.
I'll test it again when I have time.
>
> Cheers.
>
> --
> Robert
--
To unsubscribe from this list: send the line "unsubscribe linux-media" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
