On Fri, Sep 27, 2019 at 05:28:03PM +0300, Tomi Valkeinen wrote: > On 27/09/2019 15:44, Daniel Stone wrote: > > Hi Linus, > > > > On Fri, 27 Sep 2019 at 13:37, Linus Walleij <linus.walleij@xxxxxxxxxx> wrote: > > > Also the ILI9322 can actually set up gamma correction which is > > > very nice for professional applications. I haven't seen any way for > > > DRM to do gamma correction properly or any framework for it > > > to adjust and propagate gamma to/from userspace (seems like > > > another enormous task), but I am pretty sure it will be there one > > > of these days so I put in some comments and placeholders. > > > > Gamma correction has been supported since approximately the dawn of > > time with a 3x8-bit LUT. > > But, afaik, only in the display controller side. I don't think we have means > to have any properties for the panels or bridges. I guess would need some semi-elaborate negotiation dance to make sure you only correct in either the bridge/panel or in the crtc, but should be doable. I don't think we need a new property or change anything with the uapi here, just kernel internals. -Daniel -- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
