On Tue, Jul 17, 2018 at 02:25:22PM +0200, Paul Kocialkowski wrote: > Blending order is set based on the z position of each DRM plane. The > blending order register is currently cleared at each atomic DRM commit, > with the intent that each committed plane will set the appropriate > bits (based on its z-pos) when enabling the plane. > > However, it sometimes happens that a particular plane is left unchanged > by an atomic commit and thus will not be configured again. In that > scenario, blending order is cleared and only the bits relevant for the > planes affected by the commit are set. This leaves the planes that did > not change without their blending order set in the register, leading > to that plane not being displayed. > > Instead of clearing the blending order register at every atomic commit, > this change moves the register's initial clear at bind time and only > clears the bits for a specific plane when disabling it or changing its > zpos. > > This way, planes that are left untouched by a DRM atomic commit are > no longer disabled. > > Signed-off-by: Paul Kocialkowski <paul.kocialkowski@xxxxxxxxxxx> Applied, thanks! Maxime -- Maxime Ripard, Bootlin (formerly Free Electrons) Embedded Linux and Kernel engineering https://bootlin.com
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