Hi Peter, On Tue, 13 Jun 2017 16:34:25 +0200 Peter Rosin <peda@xxxxxxxxxx> wrote: > Hi! > > I need color lookup support for the atmel-hlcdc driver, and had a peek > at the code. I also looked at the drivers/gpu/drm/stm driver and came > up with the below diff. It compiles, but I have not booted it for the > simple reason that I can't imagine it will work. > > Sure, the code fills the clut registers in the .load_lut helper function > and I think it might even do the right thing when setting up the mode. > I'm less sure DMA will work correctly? It might, but I haven't looked at > it for many seconds... > > The big question is how the color info gets into the new clut array > I created in atmel_hlcdc_crtc? When I look at the stm driver, which does > it just like this AFAICT I just don't see it. So, what I'm I missing? You should look at drm_atomic_helper_legacy_gamma_set() and its users. Regards, Boris _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
