Hi Daniel, On Thursday 08 Dec 2016 11:10:05 Daniel Vetter wrote: > On Thu, Dec 08, 2016 at 12:01:19PM +1100, Benjamin Herrenschmidt wrote: > > On Wed, 2016-11-23 at 10:03 +0200, Tomi Valkeinen wrote: > > > Hi, > > > > > > Since the fbdev framework is in maintenance mode and all new display > > > drivers should be made with the DRM framework, remove the fbdev drivers > > > from staging. > > > > > > Note: the patches are created with git format-patch -D, so they can't be > > > applied. Only for review. > > > > I missed the discussion where this decision was made, I admit I am > > unimpressed by it. > > > > DRM drivers don't strike me as suitable for small/slow cores with dumb > > framebuffers or simple 2D only accel, such as the one found in the ASpeed > > BMCs. > > We have a helper for simple drivers now, if you take into account the > massive helper libraries for everything that comes along with drm I expect > if even dumb panels behind slow spi buses drm is now the more suitable > subsytem. > > > With drmfb you basically have to shadow everything into memory & copy > > over everything, and locks you out of simple 2D accel. For a simple text > > console the result is orders of magnitude slower and memory hungry than > > a simple fbdev. > > Not true, we have full fbdev emulation, and drivers can implement the 2d > accel in there. And a bunch of them do. It's just that most teams decided > that this is pointless waste of their time.j And I'd argue that a better use of time would be to implement an accelerated console that does not use fbdev at all. > > At least that was the case last I looked at the DRM stuff with Dave, > > maybe things have changed... > > > > Not everything has a powerful 3D GPU. > > That's correct, and drm can cope. And compared to fbdev there's a very > active community who improves&refactors it every kernel release to make it > even better. Since about 2 years (when atomic landed) we merge new drivers > at a rate of 2-3 per kernel release, and those new drivers get ever simpler > and smaller thanks to all this work. -- Regards, Laurent Pinchart _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
