Hi, list!
As some of you might have read on another thread, there is a discussion how to handle the X server (and possibly other) 2d contexts in the via / unichrome family of drivers that expects certain 2d engine register values to stay the same even when other contexts or DMA commands have played.
Looking at the now obsolete gamma driver and ffb_context.c, some register values are saved at context switches whereas in other drivers this does not seem to happen.
What is the common practice? That all clients always reinitialize the engines every time they are used or that the drm saves the registers that are commonly used by different clients as part of the context switch?
Any comments would be appreciated.
Thomas
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