[linux-dvb] Re: AverTV DVB-T not working under Kernel 2.6.6

[Andrew de Quincey <adq_dvb@lidskialf.net>]

On Tuesday 01 Jun 2004 15:57, Martin Kenny wrote:
> Hi Andrew,
>
> I won't get a chance to play with the dvb_override_tune_delay parameter
> until at least tomorrow (it's after midnight here), but looking at the
> code in dvb_frontend.c, where the FE_GET_TUNE_SETTINGS ioctl is called,
> if it's not implemented by the frontend driver, then the value has just
> been initialized to 0. Given that 0 was working, pre 2.6.6, for people
> with the AverTV cards, it sounds as though a good value for min_delay_ms
> in sp887x.c would be 0.

The default is 50ms, not 0. Also, it can't be 0: In that case it would spend 
no time waiting for the frontend to lock, which definitely wouldn't work. 
Oddly enough 50ms is the same as what the sp887x sets for the timeout so it 
cannot be that.

However, notice that the other two settings in the sp887's fesettings are 
zeroed:
                fesettings->step_size = 0;
                fesettings->max_drift = 0;

Can you try setting:
                fesettings->step_size = 166666*2;
                fesettings->max_drift = (166666*2)+1;
in sp887.c (leave the delay alone) and see if that fixes it? (this will set 
them to the default values)

If it does, probably the most sensible thing is just to remove the 
FE_GET_TUNE_SETTINGS implementation for that frontend as you have done and 
rely on the defaults.