[linux-dvb] Re: DVB-T autoscan for tuning data (was Re: Re: mt352/bt878cleanups, DVICO FusionHDTV DVB-T1/DVB-T Lite patches)

[Holger Waechtler <holger@qanu.de>]

Patrick Boettcher wrote:
> On Mon, 13 Sep 2004, Holger Waechtler wrote:
>
>
> > not yet, but the mt352 supports this autoscan feature.
>
> As well a the dib3000mb does.
>
> You just need to know the frequency and the bandwidth (which can be auto
> as well since there are only 3 different values).
can it also perform the full-frequency scan?


> > An API for scans was proposed a while ago on this list, please see the
> > mail archives. Any contributions in this area are recommended.
>
> What about using SET_FRONTEND and GET_FRONTEND for it?
>
> Passing the 68 Bits of TPS to the user space (new ioctl)?
>
> A general "TPS-to-frontend-parameter"-method in the (dvb-)core would be
> nice as well?! (I parse it my driver (or the demod does it) and I saw tps
> parsing other drivers, too).
I would like to pass TPS values to SET_FRONTEND/GET_FRONTEND, the mt352 
driver is a nice example that hardware can handle this directly.

Maybe we should add a SET_FRONTEND_TPS/GET_FRONTEND_TPS for compability. 
A function in dvb_frontend.c could reapack these to a SET_FRONTEND 
struct in case that the driver does not implements SET_FRONTEND_TPS. In 
v5 we should forbid direct SET_FRONTEND calls for DVB-T.

Holger