[linux-dvb] Re: tuner type not set

[rolf.siebrecht@t-online.de (Rolf Siebrecht)]

Hi!

On Wed, 20 Mar 2002, Frank Klingenhoefer wrote:
> There is for each supported tuner type an item in the array. The tuner.{h|c}
> files in the dvb driver are extented to support the tuners found on the
> various dvb cards.
> [AFAIK there are more differences, but the tuner.o out of the dvb package 
> works for my bt8xx card, too.]

If the tuner type of your bt8xx card is one of those that are already
supported by the bttv package for a long time, it works of course.
 
> By doing "insmod tuner" the tuner type is detected automagically, at least
> in recent version of the driver.
> When it fails, either the type test fails or your tuner is not supported 
> at all.

No chance for an autodetection! (Via I2C bus?) The tuner type is asserted
by the TUNER_SET_TYPE ioctl function which is emitted by dvb.o resp.
dvb_frontend.o.

In bttv, the tuner type is selected automatically - for *some* card types
- as a consequence of the "card=nn" parameter.  Also by TUNER_SET_TYPE.


Bye,
     Rolf
 



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