In the case of the cx2388x cards, Hauppauge has an HVR3000 card that has
both DVB-T and DVB-S demods on it. Only one can be used at a time, as
they would share a single transport to move the ts data.
Steve Toth has been working on the 8802-mpeg port functionality of the
cx88 driver, and he has created this device_acquire method, that allows
the driver to select which frontend has access to a bus at any given moment.
You might want to take a look at his tree for ideas:
http://linuxtv.org/hg/~stoth/hvr1300-final?cmd=changeset;node=4b846f1d939b;style=gitweb
This tree doesnt yet deal with multiple DVB frontends, but it does deal
with MPEG Encoder vs. DVB-T demod. I believe the multiple frontend
support is coming next, but I havent asked him about that.
I'm going to do the HVR3000 patch tonight, showing multiple demods on a
single bus.
FYI
Steve
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