On Fri, Dec 26, 2008 at 6:10 PM, Andy Walls <awalls@xxxxxxxxx> wrote: > On Fri, 2008-12-26 at 16:48 -0500, Devin Heitmueller wrote: >> Hello, >> >> I working on the analog support for the Pinnacle Ultimate 880e >> support, and that device includes an mxl5005s tuner. >> >> I went to do the normal changes to em28xx to support another tuner, >> which prompted me to wonder: >> >> Is the analog support known to to work in Linux for this tuner for any >> other device? >> >> The reason I ask is because I hit an oops and when I looked at the >> source I found some suspicious things: >> >> * No entry in tuner.h >> * No attach command in tuner-core.c >> * No definition of set_analog_params() callback in mxl5005s.c > > The mxl5005s support was added to the v4l-dvb repo by Steven Toth for > the HVR-1600 which uses it exclusively for ATSC (QAM and 8-VSB). > > The source of Steve's driver is from RealTek. More comments on origin > can be found in the mxl5005s.[ch] files. > > There is some history in the list archives between Steve and Manu (and > me indirectly) on the use of the mxl500x source module. > > >> I wonder if perhaps the driver was ported from some other source and >> nobody ever got around to getting the analog support working? If >> that's the case then that is fine (I'll make it work), but I want to >> know if I am just missing something obvious here.... > > I'd like to get the driver working a little better myself. Steve said > the QAM suffers a 3 dB hit compared to Manu's version (IIRC). I'd like > a decent signal strength readout. If I had a data sheet from MaxLinear > maybe I could do something. It still looks like details of external > tracking filter hardware need to be known and tested for each particular > board though. > > Regards, > Andy Thanks for the feedback. I just wanted a sanity check that I wasn't missing something obvious. I'll take a look at the code, as well as the original RealTek code and see if I can get the analog side working. I'll send some emails and see if I can get the datasheet - I didn't ask for it when I started the work since I was under the impression that the driver was mature. Devin -- Devin J. Heitmueller http://www.devinheitmueller.com AIM: devinheitmueller _______________________________________________ linux-dvb mailing list linux-dvb@xxxxxxxxxxx http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
