[linux-dvb] Multi-frontend patch merge (TESTERS FEEDBACK) was: Re: [PATCH] S2API: add multifrontend

Hans Werner HWerner4 at gmx.de
Tue Oct 14 01:23:38 CEST 2008


> Darron Broad wrote:
> > In message <48F36B32.5060006 at linuxtv.org>, Steven Toth wrote:
> > 
> > hi.
> > 
> > <snip>
> >>> Hi guys,
> >>>
> >>> thank you Steve and Darron for your work on the repositories today!
> >>>
> >>> I have pulled the latest s2-mfe and retested with the HVR4000 on
> DVB-T, 
> >>> DVB-S, DVB-S2 and analogue TV. 
> >>>
> >>> No problems so far.
> >> I'm mutating the subject thread, and cc'ing the public mailing list
> into 
> >> this conversion. Now is the time to announce the intension to merge 
> >> multi-frontend patches, and show that we have tested and are satisfied 
> >> with it's reliability across many trees.
> >>
> >> (For those of you not familiar with the patch set, it adds 
> >> 'multiple-frontends to a single transport bus' support for the HVR3000 
> >> and HVR4000, and potentially another 7134 based design (the 6 way
> medion 
> >> board?).
> >>
> >> For my part, I was asked to test the cx23885 changes and I responded to
> >> that with a series of patches to fix some OOPS initialisation errors. 
> >> The MFE patches work correctly with the cx23885 tree now.
> >>
> >> Over time I've heard constant suggestions that the patches are ready
> for 
> >> merge, the cx88 and saa7134 trees are working correctly. Now is the
> time 
> >> that I need you all to announce this. I need you each in turn to 
> >> describe you testing, and state whether you think the patches are ready
> >> for merge.
> >>
> >> Hans Werner <HWerner4 at gmx.de>
> >> darron at kewl.org
> > 
> > The test machine I have here utilises an HVR-4000 and AVERMEDIA
> > SUPER 007.
> > 
> > Multi-frontend works with both adapters with the HVR-4000 containing
> > analogue, DVB-S and DVB-T frontends, the AVERMEDIA solely DVB-T.
> > 
> > At this time with some further FM updates (see:
> http://hg.kewl.org/s2-mfe-fm/)
> > I can now reliably and consitently receive DVB-S/S2, DVB-T, analogue TV
> > and FM radio on the HVR-4000. DVB-T works on the AVERMEDIA as per
> > normal.
> > 

I have tested with the HVR4000 on many iterations of the MFE drivers and retested with
the latest s2-mfe tree yesterday. I found no problems for DVB-S, DVB-S2 (both QPSK
and PSK_8), DVB-T and analogue TV.

I will test the latest FM radio patch.

> > Applications which have been under test by include the command
> > line dvb-utils, dvbtraffic, dvbsnoop, GUI apps kaffeine and
> > mythtv. No obvious side effects have been witnessed of using
> > MFE and the applications themselves do not see any difference
> > except that they are unable to simultaneously open multiple
> > frontends due to the hardware limitation of such cards.

I tested with Kaffeine with a version of Christophe's S2API patch. It recognises both
S/S2 and T frontends on startup, and reliably scans S/S2 and T channels and tunes
between channels. I have at various times done some testing with MythTV, VDR,
Steve's tune.c and Igor's szap-s2. Apps see two normal frontends but should not hold both
open as Darron said. Closing and opening frontends as necessary seems to work cleanly
from the userspace point of view.

> > 
> > A couple of problems exist which may be present in all hybrid cards
> > is that you are able to concurrently open analogue and DVB-T where
> > these share the same tuner section. Another issue with shared
> > tuners is where both analogue and digital sections share a sleep
> > method which in some circumstances is incompatible.
> Some common hybrid issues we've seen across many cards, regardless of MFE.

It seems relatively benign : if you run say kaffeine and tvtime together, either a DVB-T
or an analogue channel is shown (the other is blank) but neither app crashes and either
takes over on a tune action.

> > 
> > At this time I am happy with the performance of this MFE card
> > (HVR-4000) and to be honest, I am looking at attending to other
> > activities. Bugs where present ought to be picked up by others,
> > I have done all that has been reasonable to test and determine
> > that MFE works.

I am also happy with the performance of the card with the MFE driver and would 
like to see it released. It is in daily use in my household without any trouble.


> Thanks Darron.
> - Steve

Release early, release often.

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