[linux-dvb] [PATCH] Garbage diseqc messages emitted by bt8xx/dst module

Gnome42 Gnome42 gnome42 at gmail.com
Fri Jun 9 17:47:09 CEST 2006

> Sorry, yeah -- I didn't realize anybody was using that patch. That part
> was actually an attempt to resolve another issue with the card, but it
> didn't work very well as you discovered. The problem is that the dst
> can't actually change voltage between 18V and 13V without issuing a
> tuning command (it can only turn the voltage off or back to whatever the
> last tuning command set it at), but the software I'm working on wants to
> be able to control the voltage without actually tuning.

No prob, I thought it might me something like that. :)

> So I put an extra tuning command in there to try to get the voltage
> switch to happen immediately, but the dst bridge really doesn't like it
> when you send multiple tuning requests in rapid succession, which is
> what happens in the normal case -- i.e. the software sets the voltage
> and shortly thereafter issues a tuning request.
> You should definitely leave in the set_polarization line though (just
> take out the write_tuna), or alternatively I have an updated patch with
> some more stuff fixed if you're interested.

Yes please! Send it along, I'm interested in testing.

Thanks for your efforts.

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