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Commit aeecfcd7 authored by Ben Skeggs's avatar Ben Skeggs
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drm/nouveau/kms/nv50: fix setting of HeadSetRasterVertBlankDmi method 



Cc: stable@vger.kernel.org	[4.10+]
Signed-off-by: default avatarBen Skeggs <bskeggs@redhat.com>
parent ac799aca

drivers/gpu/drm/nouveau/nv50_display.c

+5 −3
Original line number Diff line number Diff line
@@ -2043,6 +2043,7 @@ nv50_head_atomic_check_mode(struct nv50_head *head, struct nv50_head_atom *asyh) 
	u32 vbackp  = (mode->vtotal - mode->vsync_end) * vscan / ilace;

	u32 hfrontp =  mode->hsync_start - mode->hdisplay;

	u32 vfrontp = (mode->vsync_start - mode->vdisplay) * vscan / ilace;

	u32 blankus;

	struct nv50_head_mode *m = &asyh->mode;



	m->h.active = mode->htotal;
@@ -2056,9 +2057,10 @@ nv50_head_atomic_check_mode(struct nv50_head *head, struct nv50_head_atom *asyh) 
	m->v.blanks = m->v.active - vfrontp - 1;



	/*XXX: Safe underestimate, even "0" works */

	m->v.blankus = (m->v.active - mode->vdisplay - 2) * m->h.active;

	m->v.blankus *= 1000;

	m->v.blankus /= mode->clock;

	blankus = (m->v.active - mode->vdisplay - 2) * m->h.active;

	blankus *= 1000;

	blankus /= mode->clock;

	m->v.blankus = blankus;



	if (mode->flags & DRM_MODE_FLAG_INTERLACE) {

		m->v.blank2e =  m->v.active + m->v.synce + vbackp;