Re: [Intel-gfx] [PATCH 4/4] drm/i915: Move ioremap_wc tracking onto VMA

[Daniel Vetter]

On Wed, Apr 20, 2016 at 11:10:54AM +0200, Luis R. Rodriguez wrote:
> Reason I ask is since I noticed a while ago a lot of drivers
> were using info->fix.smem_start and info->fix.smem_len consistently
> for their ioremap'd areas it might make sense instead to let the
> internal framebuffer (register_framebuffer()) optionally manage the
> ioremap_wc() for drivers, given that this is pretty generic stuff.

All that legacy fbdev stuff is just for legacy support, and I prefer to
have that as dumb as possible. There's been some discussion even around
lifting the "kick out firmware fb driver" out of fbdev, since we'd need it
to have a simple drm driver for e.g. uefi.

But I definitely don't want a legacy horror show like fbdev to
automagically take care of device mappings for drivers.
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch