[linux-dvb] Re: DVB-C status [was:DVB-C in Helsinki]

[Johannes Stezenbach <js@convergence.de>]

Juha Poutiainen wrote:
>
> I did some testing in Tampere(Finland) area, with Hauppauge DVB-C card.
> I still get proglems with tuning with latest cvs. Also did some testing
> with older drivers and here are the results as a table, I hope you can
> descramble it :)
> 
> X == yes,  - == no
>                                 Can tune YLE
>                                 |  Can tune MTV3
>                                 | /  Audio sync OK with VDR (1.1.26)
>                                 | | /
> driver version                  | | |
> ------------------------------+-+-+-+
> dvb-1.0.0-pre2                | X X -
> CVS 'now'                     | X - X
> CVS yesterday                 | X - -
> CVS yesterday + dvb6.diff (1) | X - -
> CVS 13.04.2003                | X - -
> CVS 13.04.2003 + dvb6.diff (1)| X - -
> CVS 13.03.2003                | X - -
> CVS 13.03.2003 + dvb6.diff (1)| X - -
> CVS 13.02.2003                | X - -
> CVS 13.02.2003 + dvb6.diff (2)| X X -
> CVS 13.01.2003                | X - X
> CVS 13.01.2003 + dvb6.diff (2)| X X X

1.0.0-pre2 was release on 05 Mar 2003. The only frontend-related
difference from 1.0.0-pre2 to CVS 13.03.2003 is:

Index: driver/frontends/ves1820.c
===================================================================
RCS file: /cvs/linuxtv/DVB/driver/frontends/ves1820.c,v
retrieving revision 1.15
retrieving revision 1.16
diff -u -p -r1.15 -r1.16
--- driver/frontends/ves1820.c  27 Nov 2002 11:24:20 -0000      1.15
+++ driver/frontends/ves1820.c  12 Mar 2003 13:22:36 -0000      1.16
@@ -180,7 +180,7 @@ int tuner_set_tv_freq (struct dvb_fronte
        if (tuner_type == 0xff)     /*  PLL not reachable over i2c ...  */
                return 0;
 
-       div = (freq + 36250000 + 31250) / 62500;
+       div = (freq + 36125000 + 31250) / 62500;
        buf[0] = (div >> 8) & 0x7f;
        buf[1] = div & 0xff;
        buf[2] = byte3[tuner_type];


You can try to play with that frequency and see if you can improve
something. I think this frequency could be different for the
various DVB-C card models.

Johannes


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