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drm/nouveau/kms/nv50: fix setting of HeadSetRasterVertBlankDmi method

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Cc: stable@vger.kernel.org	[4.10+]
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2017-04-05 09:12:54 +10:00
parent ac799acaa4
commit aeecfcd744
1 changed files with 5 additions and 3 deletions
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8
drivers/gpu/drm/nouveau/nv50_display.c
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@ -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;