On Thu, Apr 8, 2021 at 2:01 PM David Hildenbrand <david@xxxxxxxxxx> wrote: > > This is something you could do using a hidden helper symbol like > > > > config DRMA_ASPEED_GFX > > bool "Aspeed display driver" > > select DRM_WANT_CMA > > > > config DRM_WANT_CMA > > bool > > help > > Select this from any driver that benefits from CMA being enabled > > > > config DMA_CMA > > bool "Use CMA helpers for DRM" > > default DRM_WANT_CMA > > > > Arnd > > > > That's precisely what I had first, with an additional "WANT_CMA" -- but > looking at the number of such existing options (I was able to spot 1 !) If you do this it probably makes sense to fix a few other drivers Kconfig in the process. It's not just a problem with your driver. "my" drivers: drivers/gpu/drm/mcde/Kconfig drivers/gpu/drm/pl111/Kconfig drivers/gpu/drm/tve200/Kconfig certainly needs this as well, and pretty much anything that is selecting DRM_KMS_CMA_HELPER or DRM_GEM_CMA_HELPER "wants" DMA_CMA. Yours, Linus Walleij
