[PATCH 1/4] drm/amd/display: Prevent vblank irq disable while VRR is active. (v2)

2019-03-22 Thread Mario Kleiner
During VRR mode we can not allow vblank irq dis-/enable transitions, as an enable after a disable can happen at an arbitrary time during the video refresh cycle, e.g., with a high likelyhood inside vblank front-porch. An enable during front-porch would cause vblank timestamp updates/calculations

Re: [PATCH 1/4] drm/amd/display: Prevent vblank irq disable while VRR is active. (v2)

2019-03-21 Thread Mario Kleiner
On Wed, Mar 20, 2019 at 2:11 PM Kazlauskas, Nicholas wrote: > > On 3/20/19 4:12 AM, Mario Kleiner wrote: > > During VRR mode we can not allow vblank irq dis-/enable > > transitions, as an enable after a disable can happen at > > an arbitrary time during the video refresh cycle, e.g., > > with a

Re: [PATCH 1/4] drm/amd/display: Prevent vblank irq disable while VRR is active. (v2)

2019-03-20 Thread Kazlauskas, Nicholas
On 3/20/19 4:12 AM, Mario Kleiner wrote: > During VRR mode we can not allow vblank irq dis-/enable > transitions, as an enable after a disable can happen at > an arbitrary time during the video refresh cycle, e.g., > with a high likelyhood inside vblank front-porch. An > enable during front-porch

[PATCH 1/4] drm/amd/display: Prevent vblank irq disable while VRR is active. (v2)

2019-03-20 Thread Mario Kleiner
During VRR mode we can not allow vblank irq dis-/enable transitions, as an enable after a disable can happen at an arbitrary time during the video refresh cycle, e.g., with a high likelyhood inside vblank front-porch. An enable during front-porch would cause vblank timestamp updates/calculations