On Thu, 24 May 2012 21:29:46 +0300 ville.syrjala at linux.intel.com wrote: > Currently the video sprites appear to get disabled on modeset more by > accient than by design. > > With the current API that behaviour makes very little sense to me. > You first enable some plane, and then it can get disabled due to some > unrelated operation. > > So these patches change the behaviour so that planes survive a modeset. > There's a new hook to make sure they get disabled when swithing > back to fbdev to show a panic oops. Yeah that's not really a design requirement; the assumption was that the display manager would do the right thing in any case (both mode sets and plane sets are privileged ops). When doing a mode set, the plane parameters will probably need to be changed anyway... But keeping it on with some kind of sensible behavior makes the simple cases easier. -- Jesse Barnes, Intel Open Source Technology Center
