Plans for Linux 4.20 and Progress on Linux 4.19
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AMD Begins Staging AMDGPU Patches For Linux 4.20/5.0, Including FreeSync Refactoring
With the DRM feature work for Linux 4.19 now in the kernel, AMD's stellar open-source driver team has begun staging their work-in-progress changes for the AMDGPU Direct Rendering Manager driver for the next kernel cycle.
There is now drm-next-4.20-wip as part of AMD's development Git tree of the Linux kernel for Radeon/AMDGPU development. That's for "Linux 4.20" that will almost surely be renamed to "Linux 5.0" given Linus Torvalds' expressed versioning preference of bumping the major kernel version once hitting that number equal to all of his fingers and toes.
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More AMDGPU Work For Linux 4.19 Has VCN + PSP Firmware Hookup For Future Hardware
The good news is that the open-source AMD graphics team continues working on support for upcoming hardware, but the bad news is that it looks like their VCN video hardware might be a bit more locked down than it is now.
With current Raven Ridge APUs there is VCN as "Video Core Next" as a replacement to UVD and VCE for video decoding and encoding, respectively. This dedicated hardware core for video encode/decode has been supported well now for some months on the open-source Linux graphics driver stack. The latest patches hitting the mailing list for hopeful integration to Linux 4.19 are a bit interesting and reveal a change for future hardware.
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POWER Changes On The Way To Linux 4.19 Include More Spectre Work
The POWER architecture changes have been submitted for the in-development Linux 4.19 kernel.
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Qualcomm Adreno 600 Series Support Submitted For Linux 4.19
Following the main DRM features update for Linux 4.19, a secondary pull request has now been submitted that offers up the nine thousand lines of code for bringing up the Adreno 600 series support for supporting the very latest Qualcomm Snapdragon SoCs.
Last week Freedreno/MSM founder and maintainer Rob Clark proposed getting A6xx support into Linux 4.19 after this Direct Rendering Manager code has been reviewed and revised for months on mailing lists. These code contributions in part come from Qualcomm / Code Aurora and there are also Google developers working on it too, including the bring-up of A6xx support within the Freedreno Gallium3D driver. This A6xx device support is good enough for running various OpenGL test cases and other basic code. The Adreno 600 series hardware can be found in Snapdragon SoCs like the new Snapdragon 845, 730, and others.
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