[linux-dvb] Re: Dvb kernel w/Nebula chewing CPU time - SOLVED!

[Michael Hunold <hunold@convergence.de>]

Hello Clyde,

> > Can you please prepare a patch that disables this interrupt pin for the 
> > Nebula cards? You can probably use the PCI vendor/device id to 
> > distinguish the device from others...
>
> I feel inclined to do better than that - the bttv module is really for
> analog cards - I think I might merge the relevant parts of the bttv stuff
> (essentially the i2c code for driving the tuner) into the dvb bt878 module.
> The bttv code already needs a patch to handle the Nebula card, so it will
> be a much cleaner solution to merge it all into dvb.
I don't think that Gerd will be happy about this and code duplication is 
always a bad thing.

But I admit that something should be done here, because loading the 
whole Video4Linux-bttv-stuff wastes a lot of memory.

"bttv" should IMHO be separated just like the saa7146/av7110 driver in 
"dvb-kernel":

A "bttv-core" that does basic stuff and stuff common to all cards (ie. 
device recognition, i2c and gpio handling). Then there ca be a 
"bttv-v4l" part that does all the stuff "bttv" currently does for analog 
tv cards.

Then the "dvb-bt8x8" can use the functions from the "bttv-core" to 
driver the dvb cards without the Video4Linux stuff.

I admit that I don't know if there a corner cases (ie. some weird cards) 
which don't fit into this scheme.

> I'll see how I go over the next week....
> Clyde
It would be cool if such a separtion can be done in the long run.

CU
Michael.



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