The drm-misc-next work continues to consist of various Direct Rendering Manager core changes as well as updates to the smaller DRM drivers that don't otherwise submit their changes directly to DRM-Next, along with other random DRM patches. For the drm-misc-next changes over roughly the past week, the new material includes:
- The Broadcom VC4 DRM driver used most notably by the Raspberry Pi 4 series has seen a rework to its HDMI power-up handling and now depends upon the kernel power management code. The VC4 driver initialization has also been reworked to utilize managed helpers.
VIA x86 open-source graphics driver changes are still happening in 2022 on the OpenChrome project front . With the old VIA code renaming now happening, it opens the door for the OpenChrome KMS driver potentially being submitted soon to DRM-Next.
- The old VIA DRM code has been renamed from via_drv to "via_dri1" in preparation for the possible mainlining of the OpenChrome DRM/KMS driver.
- The SimpleDRM driver now makes use of atomic helpers.
- The Ingenic DRM driver has added JZ4760(B) chipset support.
- Fixing of some AMDGPU patches that were causing garbled graphics when starting the X.Org Server.
- EDID luminance calculation has been moved to DRM core and the Intel (i915) kernel driver is making use of that now-common code.
- Endianess handling fixes in various format conversion helpers. DRM tests can now also pass on big endian platforms.
- Various DRM core changes, including the ability to allow TTM buffer objects to exist without a backing store.
- DMA-BUF documentation updates.
More details on the DRM-Misc-Next changes for the week via this pull request .