Quoting Thierry Reding (2018-03-01 05:54:53) > Tegra K1 and later use a GPU that can be driven by the Nouveau driver. > But the GPU is a pure render node and has no display engine, hence the > scanout needs to happen on the Tegra display hardware. The GPU and the > display engine each have a separate DRM device node exposed by the > kernel. > > To make the setup appear as a single device, this driver instantiates > a Nouveau screen with each instance of a Tegra screen and forwards GPU > requests to the Nouveau screen. For purposes of scanout it will import > buffers created on the GPU into the display driver. Handles that > userspace requests are those of the display driver so that they can be > used to create framebuffers. > > This has been tested with some GBM test programs, as well as kmscube and > weston. All of those run without modifications, but I'm sure there is a > lot that can be improved. > > Some fixes contributed by Hector Martin <mar...@marcan.st>. >
Also please make sure that any new meson.build files are in the EXTRA_DIST array in the companion Makefile.am so that they'll be in the dist tarball. Dylan
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