diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_irq.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index b6e4a762806b..eacbb2f9e091 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -698,6 +698,12 @@ static int i915_get_crtc_scanoutpos(struct drm_device *dev, int pipe, vbl_start = mode->crtc_vblank_start; vbl_end = mode->crtc_vblank_end; + if (mode->flags & DRM_MODE_FLAG_INTERLACE) { + vbl_start = DIV_ROUND_UP(vbl_start, 2); + vbl_end /= 2; + vtotal /= 2; + } + ret |= DRM_SCANOUTPOS_VALID | DRM_SCANOUTPOS_ACCURATE; /* |