[linux-dvb] Additional tuning status values req'd for tda10048

MikeW mw_phil at yahoo.co.uk
Thu Dec 13 19:03:43 CET 2007


MikeW <mw_phil <at> xxxxx.xx.xx> writes:

> 
> The TDA10048 (channel decoder) has some status registers
> that are helpful for fast scanning and accurate tuning.
> 
> AUTO_OFFSET/OFFSET_F and FREQERR_R/TIMERR_R - for offset detection and tuning &
> sampling clock correction
> 
> How would features such as these fit into the existing frontend API ?
> 
> I could imagine a FE_CAN_OFFSET_AUTO, FE_CAN_FREQ_CORRECT and
> FE_CAN_SAMP_CLOCK_CORRECT, in fe_caps,
> and an FE_HAS_OFFSET in fe_status, but can't see how you could
> read or set any of the other values without extending ioctls.
> 
> Regards,
> MikeW
> 

I guess they could be additional dvb_frontend_parameters:
__u32 channel_offset, freq_offset, samp_clk_error;

MikeW



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