NVIDIA Tegra DRM Prepares For Linux 3.10 Kernel
Written by Michael Larabel in Nouveau on 18 April 2013 at 01:29 PM EDT. 4 Comments
The first NVIDIA Tegra DRM driver changes for the Linux 3.10 kernel are now known.

Thierry Reding of Avionic Design submitted his first pull request for drm-next to merge his Tegra DRM kernel driver changes. The most notable change with the 3.10 kernel will be introducing host1x support, which is needed for introducing 2D and 3D acceleration to this open-source graphics driver used by NVIDIA ARM SoCs.

With this pull beyond the host1x support is also introducing gr2d, which is needed for 2D acceleration on the kernel-side. The recently-published open-source Tegra 3D support isn't part of this 3.10 DRM pull request.

Reding wrote, "The bulk of this pull-request is the host1x series that has been in the works for a few months. The current implementation looks good and has been tested by several independent parties. So far no issues have been found. To be on the safe side, the new Tegra-specific DRM IOCTLs depend on staging in order to give some amount of flexibility to change them just in case. The plan is to remove that dependency once more userspace exists to verify the adequacy of the IOCTLs. Currently only the 2D engine is supported, but patches are in the works to enable 3D support on top of this framework as well. Various bits of open-source userspace exist to test the 2D and 3D support. This is still a bit immature but it allows to verify that the kernel interfaces work properly."

With the 2D support, it can be used in conjunction with the user-space being the updated DRM library (libdrm) and the new GRATE driver.

Other changes for this Tegra DRM driver include small code clean-ups, fixes, and a new pixel format is supported (XBGR8888).
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