diff options
Diffstat (limited to 'drivers/gpu/drm/drm_irq.c')
| -rw-r--r-- | drivers/gpu/drm/drm_irq.c | 25 |
1 files changed, 2 insertions, 23 deletions
diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c index e55619f49671..c2676b5908d9 100644 --- a/drivers/gpu/drm/drm_irq.c +++ b/drivers/gpu/drm/drm_irq.c @@ -542,7 +542,7 @@ int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev, int crtc, { ktime_t stime, etime, mono_time_offset; struct timeval tv_etime; - int vbl_status, vtotal, vdisplay; + int vbl_status; int vpos, hpos, i; int framedur_ns, linedur_ns, pixeldur_ns, delta_ns, duration_ns; bool invbl; @@ -558,9 +558,6 @@ int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev, int crtc, return -EIO; } - vtotal = mode->crtc_vtotal; - vdisplay = mode->crtc_vdisplay; - /* Durations of frames, lines, pixels in nanoseconds. */ framedur_ns = refcrtc->framedur_ns; linedur_ns = refcrtc->linedur_ns; @@ -569,7 +566,7 @@ int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev, int crtc, /* If mode timing undefined, just return as no-op: * Happens during initial modesetting of a crtc. */ - if (vtotal <= 0 || vdisplay <= 0 || framedur_ns == 0) { + if (framedur_ns == 0) { DRM_DEBUG("crtc %d: Noop due to uninitialized mode.\n", crtc); return -EAGAIN; } @@ -633,24 +630,6 @@ int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev, int crtc, */ delta_ns = vpos * linedur_ns + hpos * pixeldur_ns; - /* Is vpos outside nominal vblank area, but less than - * 1/100 of a frame height away from start of vblank? - * If so, assume this isn't a massively delayed vblank - * interrupt, but a vblank interrupt that fired a few - * microseconds before true start of vblank. Compensate - * by adding a full frame duration to the final timestamp. - * Happens, e.g., on ATI R500, R600. - * - * We only do this if DRM_CALLED_FROM_VBLIRQ. - */ - if ((flags & DRM_CALLED_FROM_VBLIRQ) && !invbl && - ((vdisplay - vpos) < vtotal / 100)) { - delta_ns = delta_ns - framedur_ns; - - /* Signal this correction as "applied". */ - vbl_status |= 0x8; - } - if (!drm_timestamp_monotonic) etime = ktime_sub(etime, mono_time_offset); |
