OK, I have it working.
 
 
The problem was in dma_drm.h where 0 was passed instead of SA_SHIRQ to request_irq call. That prevented it from sharing the irq.
 
anything seems to work ok and I get 350 frames per second in gears!
 
thanks for help Keith!
 
with best regards,
 
Michael
 
 
 

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