On 09/03/2011 06:12 PM, Mauro Carvalho Chehab wrote:
The DRX-K frontend needs to know the IF frequency in order to work,
just like all other frontends. However, as it is a multi-standard
FE, the IF may change if the standard is changed. So, the usual
procedure of passing it via a config struct doesn't work.
One might code it as two separate IF frequencies, one by each type
of FE, but, as, on tda18271, the IF changes if the bandwidth for
DVB-C changes, this also won't work.
So, the better is to just add a new callback for it and require
it for the tuners that can be used with MFE frontends like drx-k.
It makes sense to add support for it on all existing tuners, and
remove the IF parameter from the demods, cleaning up the code.
Is it clear that only used tuner IC defines used IF?
I have seen some cases where used IF is different depending on other
used hardware, even same tuner IC used. Very good example is to see all
configuration structs of old tda18271 driver. Those are mainly used for
setting different IF than tuner default...
Antti
--
http://palosaari.fi/
--
To unsubscribe from this list: send the line "unsubscribe linux-media" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
