Re: [RFCv1 PATCH 00/20] cx231xx: v4l2-compliance fixes

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On Tue January 29 2013 17:41:29 Devin Heitmueller wrote:
> On Tue, Jan 29, 2013 at 11:32 AM, Hans Verkuil <hverkuil@xxxxxxxxx> wrote:
> > I will take a closer look at the vbi support, though.. It would be nice to get
> > that working.
> 
> FYI:  I had the VBI support working when I submitted the driver
> upstream (at least for NTSC CC).  If it doesn't work, then somebody
> broke it.

OK, I did some more tests and it turned out to be related to the no_alt_vanc
setting in the board definitions. If it is 1, then usb_set_interface() is
never called and the endpoint is never created.

It's unclear to me if this means that if no_alt_vanc is set, then the vbi node
should be disabled. It seems that way.

Unfortunately, of the three cx231xx devices I have no_alt_vanc is set on two
and the third (Hauppauge EXETER) is the one where the tda18271 tuner has
issues: it always gets errors when writing to it. It used to load correctly
about 10% of the time in the past, but now I can't get it to work at all.

Devin, I think you said once that you knew what is going on. Do you have
any code that I can try to make it work again?

I did manage to stream vbi, but with a non-functioning tuner I can't check
if it really works or not.

Regards,

	Hans
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