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drm/nouveau/kms/nv50: request vblank events for commits that send completion events

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This somehow fixes an issue where sync-to-vblank longer works correctly
after resume from suspend.

From a HW perspective, we don't need the IRQs turned on to be able to
detect flip completion, so it's assumed that this is required for the
voodoo in the core DRM vblank core.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2017-01-24 09:32:26 +10:00
parent 24bf7ae359
commit 2b50789373
1 changed files with 6 additions and 0 deletions
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6
drivers/gpu/drm/nouveau/nv50_display.c
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@ -4052,6 +4052,11 @@ nv50_disp_atomic_commit_tail(struct drm_atomic_state *state)
}
}
for_each_crtc_in_state(state, crtc, crtc_state, i) {
if (crtc->state->event)
drm_crtc_vblank_get(crtc);
}
/* Update plane(s). */
for_each_plane_in_state(state, plane, plane_state, i) {
struct nv50_wndw_atom *asyw = nv50_wndw_atom(plane->state);
@ -4101,6 +4106,7 @@ nv50_disp_atomic_commit_tail(struct drm_atomic_state *state)
drm_crtc_send_vblank_event(crtc, crtc->state->event);
spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
crtc->state->event = NULL;
drm_crtc_vblank_put(crtc);
}
}