[linux-dvb] Re: NEWSTRUCT questions

[Holger Waechtler <holger@convergence.de>]

Hi,

Florian Schirmer wrote:
> Hi,
> 
> 
>>NEWSTRUCT is history...
>>We were trying to push the DVB API/framework and our favourite driver
>>into the 2.5 kernel, and cleaned up some type naming issues.
>>
>>See http://linuxtv.org/mailinglists/linux-dvb/2002/10-2002/msg00183.html
>>The script attached there can be used to help porting your sources to the
>>new API.
> 
> 
> Doh. This was a naming issue. No idea how to call the current api. Maybe 
> newapi :D Sorry for the trouble. We're aware of the current state and are 
> using the dvb-kernel tree of the linuxtv.org cvs.
> 
> http://cvs.berlios.de/cgi-bin/viewcvs.cgi/tuxbox/driver/dvb/drivers/media/dvb/
> 
> There you will find a (currently not working) snapshot of your efford to port 
> to the newapi. There is a dummy frontend and adapter driver which might be 
> helpfull for others trying to understand how it works. It is currently under 
> development and far from beeing complete.
> 
> 
>>The DVB driver should be able to tell the I2C subsystem to probe for
>>frontends only on a specific I2C bus. (The frontend drivers are
>>the same for all systems, so they know nothing about the busses.)
> 
> 
> Thats true. At least it would be fine to have such a situation ;)
> 
> 
>>Maybe Holger knows a solution?
> 
> 
> Hope so! I've a vague idea on how to fix the problem in a much cleaner way. I 
> will try to elaborate but dont know if this even will work:
> 
> My idea is to extend the dvb_i2c layer with some kind of gateway/bridge to the 
> linux i2c layer. dvb_i2c will try to probe its internal busses first and then 
> fallback to linux i2c if no devices could be attached.
>
> Would you accept a patch for that? This will result in a dependency to the 
> i2c_core. If a dependency is not acceptable it is possible to make it a 
> compile time option.

just send me the patch.

> This opens up another question: Is there a required module load order? Frist 
> fe's then adapters or the other way round? Or no required order at all?

when everything is implemented correctly you should be able to load 
modules in any order. modprobe should resolve dependencies.

Holger



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