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[linux-dvb] Re: [PATCH] ves1820 inversion



Andreas Oberritter wrote:
On Mon, 2003-05-26 at 09:36, Holger Waechtler wrote:

imho inversion
handling should be left to the application. this way it works fine on a
nokia dbox2-c. any complaints?
That's only possible if you know the real I/Q pin assignment. Unfortunally some Hauppauge DVB-C cards have swapped I/Q pins but the Siemens cards not. (don't know who of them is correct, but if I get any of the responsible engineers into my hands I'll kill him - )

kill the one who made it incompatible to the dbox2 :)
:) (that's up to you;)

do something like if ((inv != INVERSION_AUTO) && (flag)) inv = !inv?
hmm, I don't know what exactly do you mean, but it should be definitely possible to get the inversion autoprobing working, and at the time I coded this it actually worked. Maybe we have to increase some of the delays or there became something broken in the REG0 initialisation, many people changed a lot in this code last time.

it would be nice, if it can be autoprobed. however, setting it manually
is stable, if you know what you have to set.
agreed.

The stv0299 driver is using a similiar approach and everything is working fine there.

maybe because inversion is always the same on satellites?
but we're probing it at least once since Alps and Philips frontends have I/Q pins swapped compared to the LG frontends...

Holger



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