After getting the small Radeon DRM changes queued for Linux 3.15, AMD developers have gone ahead and merged their open-source AMD Mullins graphics driver support into the DRM library (libdrm), xf86-video-ati DDX, and Mesa.

Hitting the xf86-video-ati DDX this Friday afternoon was the small additions to support Mullins and the new PCI IDs. The support was then added for Mullins in RadeonSI Gallium3D, which again come down to small changes with the Mullins graphics processor not being anything radically new and based off of the Kabini GPU.

Using the new xf86-video-ati and Mesa support is dependent upon the libdrm 2.4.54 release and then obviously having the support within the kernel -- which should happen for Linux 3.15 assuming Linus doesn't object. The RadeonSI Gallium3D changes will be part of the Mesa 10.2 release that's due to happen within the next month.