DRM Library Gets Open-Source NVIDIA Tegra Support
Written by Michael Larabel in Nouveau on 4 December 2012 at 02:35 PM EST. 2 Comments
One week after NVIDIA published 2D open-source driver code for their Tegra 2 ARM SoCs, which is applied to the Tegra DRM driver that will premiere with the Linux 3.8 kernel, code has now emerged for supporting the NVIDIA Tegra driver within the libdrm component.

This code isn't as exciting as the Tegra DRM driver or last week's 2D acceleration code provided by NVIDIA's growing fondness of open-source for Tegra, but it's still important nevertheless. This helper code will eventually be used when there is a new X.Org/DDX driver for supporting the Tegra 2D acceleration and communicating with the kernel DRM driver.

The NVIDIA Tegra DRM library support amounts to a couple hundred lines of code that provides a basic API and two IOCTLs for creating Tegra-specific GEM. For the eventual X.Org graphics driver for handling open-source Tegra, it's looking like that it will be based upon a forked version of the generic xf86-video-modesetting driver and then the various Tegra-specific acceleration bits layered atop. There was also brief talk about forking the dead xf86-video-nv driver, but that path seems much less likely.

The current libdrm patch can be found on the mailing list. Expect more patches out of NVIDIA and Avionic Design going forward. If you missed it, read the back-story of the recent open-source NVIDIA work.
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Michael Larabel is the principal author of Phoronix.com and founded the web-site in 2004 with a focus on enriching the Linux hardware experience and being the largest web-site devoted to Linux hardware reviews, particularly for products relevant to Linux gamers and enthusiasts but also commonly reviewing servers/workstations and embedded Linux devices. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics hardware drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated testing software. He can be followed via Twitter or contacted via MichaelLarabel.com.

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