Open-Source Radeon Driver Reworks Audio Code, Adds DisplayPort Audio

Written by Michael Larabel in Radeon on 13 January 2015 at 01:46 PM EST. 34 Comments
The open-source Radeon DRM driver will finally support audio over DisplayPort for all relevant AMD GPUs.

Alex Deucher published a large set of Radeon DRM patches that rework the Radeon Linux driver's audio support. The 24 patches adjust over one thousand lines of kernel code.

These patches clean-up the driver's audio handling and add support for DisplayPort audio on all supported AMD GPUs, per this patch series.

Assuming these patches are in good shape, they're possible material for the Linux 3.20 kernel.

Sadly there's nothing new to report on the awaited AMDGPU kernel driver for supporting the R9 285 Tonga and newer GPUs that's needed for the new AMD unified Linux driver approach. Due to the change last year in how DRM-Next is handled, there's just one or two weeks left before the 3.20 DRM merge window will close. The AMDGPU driver would also have to go through public review by upstream developers outside of AMD, which already would make this new driver more like a Linux 3.21 (or later) feature. At least for 3.20 there's other changes worth getting excited over.
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Michael Larabel is the principal author of and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and automated benchmarking software. He can be followed via Twitter, LinkedIn, or contacted via

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