On Tue, Oct 08, 2013 at 06:12:15PM -0300, Paulo Zanoni wrote: > 2013/10/1 Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>: > > On Thu, Sep 26, 2013 at 08:06:00PM -0300, Paulo Zanoni wrote: > >> From: Paulo Zanoni <paulo.r.zanoni@xxxxxxxxx> > >> > >> The consoles who need to do something when unbinding or binding can > >> optionally implement these functions. > >> > >> The current problem I'm trying to solve is that when i915+fbcon is > >> loaded on Haswell, if we disable the power well (to save power) the > >> VGA interface gets completely disabled, so when we unbind fbcon we > >> need to restore the VGA interface to allow vgacon to work. > > > > We don't need to make it work. No one else does, and in the general case > > it's even impossible since on some hardware that would definitely > > corrupt the state that the real driver is attempting to use. The only > > case where it might be nice to restore vgacon is on i915 unload, but no > > one else does that either AFAIK, so I would not waste any cycles on > > attempting that. > > I don't understand your point. Without patches 3-4-5, module_reload > doesn't work at all if the power well is disabled: we need these > patches to fix it. The plan is not to restore everything to make > vgacon actually work, the plan is just to prevent it from breaking > module_reload. How does the power well vs. vgacon break module_reload? BTW module_reload seems to be busted on ILK and IVB too currently. -- Ville Syrjälä Intel OTC _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
