[PATCH 19/19] drm/kms: don't export drm_mode_group_init_legacy_group

[Daniel Vetter]

On Thu, Jan 23, 2014 at 10:05:19AM +0000, Russell King - ARM Linux wrote:
> On Thu, Jan 23, 2014 at 11:00:28AM +0100, Daniel Vetter wrote:
> > On Thu, Jan 23, 2014 at 10:42:02AM +0100, David Herrmann wrote:
> > > If there's ever hardware that truly supports sub-device hotplugging,
> > > we can support that by adding a DRM-ClientCap like 3D modes. But as I
> > > understand, the current hardware is still a single piece of hardware
> > > which just might get probed via different buses and thus is not an
> > > atomic entity. So the device is still hotplugged as a whole, we just
> > > don't get the events through a single path.
> > 
> > Yeah, if we ever want to allow hotplugging after driver setup that's
> > massive work to do it right. Which is why I want to plug this hole here
> > before someone sneaks in for real ;-)
> 
> David did say at the kernel summit that he's not interested at all in
> hotplugging the components of a DRM system, and his statement appeared
> to be very clear in that regard that it was never going to happen.

I think we eventually need to be able to hot-plug connectors (and maybe
encoders) to support fancy dp1.2 output routing and multiple streams over
the same cable. But I agree that hotplugging crtcs is insane and better
done by hotplugging an entire drm device with that crtc. In any case not
something to worry about right now.
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch