On Thu, Feb 07, 2019 at 11:22:39PM +0100, Daniel Vetter wrote:
> On Thu, Feb 07, 2019 at 09:36:46AM +0100, Linus Walleij wrote:
> > +static const struct drm_mode_config_funcs mode_config_funcs = {
> > + .fb_create = drm_gem_fb_create,
>
> You need drm_gem_fb_create_with_dirty here because you have a manual
> upload screen. Also might head the advice from the kerneldoc and check
> your buffer alignment constraints here instead of in the check callback.
> But I guess either works, best would be if dumb_create would align stuff
> correctly (which it should), but since this is super theoretical (usually
> modes are even enough), who cares :-)
Forgot to mention: You might want to wire up the damage rect stuff and
only upload the part of the screen that userspace/fbdev tells you has
actually changed. Doesn't apply to all (or even most) userspace just yet,
since brand new stuff.
-Daniel
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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