Re: [v4l-dvb-maintainer] [PATCH] v4l2: add hardware frequency seek ioctl interface

[Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxx>]

On Tue, 26 Feb 2008 08:39:18 -0800
Brandon Philips <bphilips@xxxxxxx> wrote:

> On 18:13 Sun 24 Feb 2008, Keith Mok wrote:
> > Add hardware frequency seek ioctl and capacity as supported by many
> > chipsets but no interface in v4l2.  Any comments about adding a new
> > ioctl or use the reserved parameters in v4l2_frequency ?

Seems fine to me to have an specific ioctl for doing radio frequency seeks.

> If we do end up adding this we will need to add it to the spec:
>   http://v4l2spec.bytesex.org/

Yes. API should describe how this works.

> So, could you please explain what this control does?  And perhaps some
> pseudo code of how it would be used.   

It is good to have a patch to a real driver, implementing this feature. I don't
like the idea of implementing newer ioctls at the API without having an
in-kernel driver using. Having the driver ioctl implementation helps other
developers that may need to use this interface on other places.


Cheers,
Mauro

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