Intel Has A Few More Graphics Changes For The Linux 3.20 Kernel
Written by Michael Larabel in Intel on 24 January 2015 at 04:42 AM EST. Add A Comment
Intel has already landed a lot of new DRM graphics code for the Linux 3.20 kernel but there's more in store for drm-next before calling it a week.

Daniel Vetter of Intel's Open-Source Technology Center sent in yet another Intel drm-next pull request to David Airlie for accepting into the 3.20 DRM-Next Git tree before he closes off the tree for accepting new feature code (Airlie's change for the past few kernels has been to stop accepting new code a few weeks before the N-1 release). With this latest Git pull request, the changes aren't too exciting:
- refactor i915/snd-hda interaction to use the component framework (Imre)
- psr cleanups and small fixes (Rodrigo)
- a few perf w/a from Ken Graunke
- switch to atomic plane helpers (Matt Roper)
- wc mmap support (Chris Wilson & Akash Goel)
- smaller things all over
There's some audio code reworking, Panel Self Refresh clean-ups, utilization of the Atomic plane helpers, write-combining mmap support, and other small changes.

Vetter also sent in various small changes for DRM core as part of a separate pull request. He then said, "I'm cooking some more atomic patches that I'd like to sneak into 3.20, but still need a bit more testing. I'll send the pull for that next week, impact should be really minimal (mostly new code to allow drivers to do dpms on atomic and so get rid of the last legacy entry point)."

Among the prominent Intel DRM changes already queued up for Linux 3.20 include an important Haswell performance boosting patch, HiZ performance work for Broadwell and Cherryview, and other improvements -- including full PPGTT for Broadwell.
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