On Mon, 2009-07-27 at 11:09 +0530, Ravi A wrote: > > > Andy Walls wrote: > > > Hi Andy, > > > > > > I did some more testing comparing the patches. The dropouts appear to > > > be because of the VCO related patches. The versions before the VCO > > > center frequency patch do not show this issue. I was mislead earlier > > > (into thinking all the versions had the dropouts) as I was just doing > > > an unload and load to move across versions - this does not seem to be > > > clean, the register writes may not be completely reset. If I do a cold > > > boot in between, then with pre-VCO version I am able to see that there > > > are no dropouts. I also checked the patches you submitted to the > > > staging repository and there seem to be no dropouts with this too. > > > > > > I will continue to do more testing to double-check. Let me know if you > > > think the above is reasonable. > > > > > > > > > Ravi, > > > > I'm going to leave the cx25840 module alone for now. I really don't > > have time to chase problems with changing the VCO operation and it > > wasn't needed to get your card working (AFAICT). > > > > My pull reuqest only include the changes needed for you card (so far) > > and the PARTSNIC tuner. > > > > So what's left? You said you had some noisy/weak audio right? I'll try > > to add the v4l2-dbg support to the wm8739 module sometime this weekend. > > I'm essentially going to mimic the implementation in the cs5345 module. > > That way, you'll be able to experiment with wm8739 settings. > > > > Regards, > > Andy > > > > > > > Regards > > > Ravi > > > > > > > > > > > Hi Andy, > > Thanks. > > Yes, the VCO change was not needed for me to use my card. > > About the audio, it is not too bad, but it could be made much better > if the gain in WM8739 is increased. Currently it does not seem to be > using the full scale range of the ADC, and besides, there is > attenuation on the board too, so the final output is pretty low. > Increasing the WM8739 volume should help to boost the SNR a lot. I can > experiment with the settings once you add the WM8739 support.
Ravi, Please test the latest patch at http://linuxtv.org/hg/~awalls/ivtv it adds a secondary set of user controls for manipulating the WM8739 audio controls via v4l2-ctl. You will see controls named "secondary_volume", "secondary_mute", etc. Hans, If these control settings are usable for Ravi, can you please comment on the patch. It was the simplest way I could think of to effect the change in a very generic way, that should work for any ivtv card. But looking at it, I get the sense it could possibly be improved. > The other issue I am seeing is the Composite input quality which I > mentioned sometime back. There are jagged edges in red/yellow and > sometimes white edges. Moving text is very jagged too. I think it may > have something to do with the internal de-interlacing in the card, but > I have no clue. I plan to try some register settings tomorrow. The > S-Video input does not seem to have this problem and gives crystal > clear picture. I don't have any thought on this at the moment. Life got busy recently. Regards, Andy > > Regards > Ravi > > > > _______________________________________________ ivtv-devel mailing list [email protected] http://ivtvdriver.org/mailman/listinfo/ivtv-devel
