1. Computers
  2. Display Drivers
  3. Graphics Cards
  4. Memory
  5. Motherboards
  6. Processors
  7. Software
  8. Storage
  9. Operating Systems


Facebook RSS Twitter Twitter Google Plus


Phoronix Test Suite

OpenBenchmarking.org

New Radeon HDMI Audio Patches Published

AMD

Published on 07 December 2011 07:00 PM EST
Written by Michael Larabel in AMD
2 Comments

While AMD still hasn't published Radeon HDMI audio patches for their open-source Linux driver to enable the audio support on their Radeon HD 5000 series and newer, the reverse-engineered community patches have quickly evolved.

On Sunday I wrote that the community beat AMD to Evergreen HDMI audio support. This milestone was largely achieved by Rafał Miłecki, a long-standing open-source contributor. Since his initial patches that were published over the weekend, the community has provided him with more Radeon register dumps to evolve this audio output support.

Rafał has announced via his blog and an email to Phoronix that the Evergreen support should be pretty much complete for stereo support. In his new patches the driver is no longer using a single hard-coded HDMI block, which was done due to not knowing how the HDMI block mapping was handled by the hardware. However, thanks to the dumps from the community -- in part organized on the Phoronix Forums -- a solution was devised. The HDMI block mapping is done based on the DIG encoder, so it should work across the spectrum of Evergreen (Radeon HD 5000 series) graphics cards.

The patch series for the Evergreen support begins with this mailing list message. These patches don't cover the Radeon HD 6000 series (Northern Islands / Cayman) series support, but hopefully AMD will publish their HDMI support patches in the near future to fill in the missing bits. (Right now their patches are still held up in legal review.)

The Evergreen HDMI audio support should at least land in the Linux 3.3 kernel. If you're using the proprietary Catalyst Linux driver, HDMI audio should already work across the spectrum of support graphics cards.

Nice work Rafał Miłecki!

About The Author
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 and or contacted via .
Latest Articles & Reviews
  1. Linux Compiler Benchmarks Of LLVM Clang 3.5 vs. LLVM Clang 3.6-rc1
  2. Intel Broadwell HD Graphics 5500: Windows 8.1 vs. Linux
  3. Linux Benchmarks Of NVIDIA's Early 2015 GeForce Line-Up
  4. NVIDIA GeForce GTX 960: A Great $200 GPU For Linux Gamers
  5. Disk Encryption Tests On Fedora 21
  6. Xonotic 0.8 Performance With The Open-Source AMD/NVIDIA Gallium3D Drivers
Latest Linux News
  1. How To Use GCC 5's OpenMP & OpenACC Offloading Support
  2. Linux Users Upset By Chromium's Busted HiDPI Support
  3. BPF Backend Merged Into LLVM To Make Use Of New Kernel Functionality
  4. Dying Light Is Headed To Linux, SteamOS
  5. Wayland 1.6.1 & Weston 1.6.1 Released
  6. Mesa 10.4.3 Brings A Bunch Of Fixes For The Direct3D "Nine" Support
  7. Intel Has A Few More Graphics Changes For The Linux 3.20 Kernel
  8. Gummiboot Gains PE File Searching Support To Find Linux Kernels
  9. Wine 1.7.35 Starts Working On OpenGL Core Context Support
  10. X.Org Server 1.17 Pre-Release "TimTam" Is Out
Most Viewed News This Week
  1. Windows 10 To Be A Free Upgrade: What Linux Users Need To Know
  2. CoreOS Moves From Btrfs To EXT4 + OverlayFS
  3. Google Admin Encourages Trying Btrfs, Not ZFS On Linux
  4. TraceFS: The Newest Linux File-System
  5. Mozilla's Servo Still On Track For 2015 Alpha Release
  6. My Initial Intel Broadwell Linux Experience With The ThinkPad X1 Carbon
  7. Fedora 23 Likely To Pursue Wayland By Default
  8. Keith Packard Leaves Intel's Linux Graphics Work