[linux-dvb] Re: Proposal for new frontend architecture

[Holger Waechtler <holger@qanu.de>]

Wolfgang Wegner wrote:

> Hi,
> On Thu, Sep 23, 2004 at 08:50:25AM +0200, Michael Hunold wrote:
>  
>
> > The easier way is to use the idea of Andrew and Holger and put the demod 
> > drivers into some sort of library and remove kernel i2c completely. The 
> > main question is, if a kernel i2c demod driver can be useful for others 
> > (ie. if you want to solder a demod to your parallel port i2c interface)
> >    
It would still be possible, the code becomes even more portable because 
there are no dependencies to a linux-specific API left. BSD-, MacOS-X-, 
and even open-source windows are easy to create because all "driver 
logic" is seperated from the OS specific stuff in the driver libraries. 
OS-specific registration is located in the card driver and the dvb-core 
module.

> When working on the "commercial" tuner driver, i found it extremely
> convenient to hook up a new frontend (NIM: RF + power in, TS out and
> control via I2C) to my parallel port i2c adapter, hack the driver and
> then simply dropping this driver into the regular application. All
> i needed was a very small wrapper to convert the linux kernel-i2c API
> to the i2c api used there, and a "control application" to set channel
> and read the status.
> Right now i am trying to add a DVB-T frontend to an old Siemens DVB-C
> board. Here it would also come handy for me. ;-)
>
> I agree that the latter is not relevant, but the former might be
> nice for companys willing to adopt (parts of) linux-dvb for a
> commercial set-top-box development.
>  
Please respect the licenses, most of these drivers are GPL.

Holger