Re: Card Asus P7131 hybrid > no signal

[Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxx>]

> 
> We have definitely issues on analog, but I can't test SECAM_L.
> 
> After ioctl2 conversion, the apps don't let the user select specific
> subnorms like PAL_I, PAL_BG, PAL_DK and SECAM_L, SECAM_DK, SECAM_Lc
> anymore.

Seems to be an issue at the userspace app. SAA7134_NORMS define a mask of supported
norms. STD_PAL covers all the above PAL_foo. Also, SECAM covers all the above
SECAM_foo.

If the userspace app sets V4L2_STD_PAL, the driver should run on autodetection
mode. If, otherwise, the app sets V4L2_STD_PAL_I, the driver will accept and
select PAL_I only.

> Internally the driver knows about all norms, but we have a clear
> breakage of application backward compatibility and might see various
> side effects. Especially, but not only for SECAM, it was important that
> the users can select the exact norm themselves because of audio carrier
> detection issues.

> 
> It is firstly on 2.6.25.
> 
> If you are affected, apps like xawtv or mplayer will only report these
> TV standards.

It shouldn't be hard to make enum_std to send all possible supported formats.
Maybe this could be good for the apps you've mentioned.

In this case, a patch to videodev.c should replace the code after case
VIDIOC_ENUMSTD to another one that would report the individual standards, plus
the grouped ones.

Cheers,
Mauro

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