Commit 3a03dfb0 authored Jul 14, 2015 by Maarten Lankhorst Committed by Daniel Vetter Jul 14, 2015

drm/i915: Calculate vblank timestamping constants before enabling vblank.



This is required to properly initialize vblanks on the active crtc.
Without it drm_calc_vbltimestamp_from_scanoutpos can fail with
crtc 0: Noop due to uninitialized mode.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

parent 4be40c98

drivers/gpu/drm/i915/intel_display.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -15239,6 +15239,7 @@ static void intel_sanitize_crtc(struct intel_crtc *crtc)
		/* restore vblank interrupts to correct state */
		drm_crtc_vblank_reset(&crtc->base);
		if (crtc->active) {
		drm_calc_timestamping_constants(&crtc->base, &crtc->base.hwmode);
		update_scanline_offset(crtc);
		drm_crtc_vblank_on(&crtc->base);
		}