Video controller implementation and Overlay management

Jul 25, 2007 0 Replies

Hi all, I'm a hw/fw designer and I'm now involved in developing a simple QVGA controller inside a FPGA for an ambedded architecture (using PPC8270 micro and a sharp TFT 6bit/color display). I found on opencores a VGA IP core that seems to be interesting and usable but it doesn't manage OVERLAY.



I do not know how Linux manage X window sys... I google a lot whithout find an useful answer, so please help:



- Do I need to implement an OVERLAY MANAGEMENT feature inside my FPGA or not? Could I charge Linux's for OVERLAY features ?



- Should I write overlay features inside the driver or it's already implemented in kernel?



- Where I could find info about video driver developing and kernel integration?



- Do you have suggestion ?



Any help will be appreciated! Thanks in advance, regards!



B.



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