saa7134 with many MPEG devices

Hi All

Now saa7134 can work only with one MPEG device. For our new TV card need support two or many.

I think we can rework this part.

Rework struct saa7134_mpeg_ops as duble linked list add pointers to next and previose mops pointer.

Add special function for call this devices.

What you thinbk about it??

With my best regards, Dmitry.