[linux-dvb] Re: Writing a DVB driver and some newbie stuff

[Mark Watson <markw@cus.org.uk>]

I have my driver working now in that I can run dvbtraffic and see the
number of packets etc. However it seems I need to register a frontend to
do anything interesting (I hacked scan to work without, but don't really
want to do that to everything!). I tried getting the driver to work with
the dummy frontend, but am having no luck... I can't find any drivers with
useful comments on how this is done:-(

It appears that the DVB code always uses i2c to communicate? At least
dvb_register_frontend code seems to play with i2c always? Seems strange
since thats a a 2 wire inter chip thing. I don't know a great deal about
it besides writing a simple bit toggling thing to talk to the Maven chip
on the G400...

All I want from the frontend is to provide enough so that most DVB
software things it is talking to a real frontend. Possibly later I want to
let it know which transponders are available and get a call to request
transponder change. Is that possible?

Would I be best off just writing a driver on the adaptor0/frontend0
major/minor to reply to the standard ioctls? Or does calling
dvb_register_frontend etc. give me any benefit?

Lastly how do the calls to do with connect fe_mem and fe_hw in the driver
relate to the frontend? I put them in my driver since they seem to be
standard, but I don't have a clue what they do!

Any help greatly appreciated.

Thanks,

Mark