diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/tilcdc/tilcdc_crtc.c | 21 |
1 files changed, 13 insertions, 8 deletions
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_crtc.c b/drivers/gpu/drm/tilcdc/tilcdc_crtc.c index 52845c8b948e..d9d2a6cc27c7 100644 --- a/drivers/gpu/drm/tilcdc/tilcdc_crtc.c +++ b/drivers/gpu/drm/tilcdc/tilcdc_crtc.c @@ -174,8 +174,6 @@ int tilcdc_crtc_page_flip(struct drm_crtc *crtc, struct drm_device *dev = crtc->dev; int r; unsigned long flags; - s64 tdiff; - ktime_t next_vblank; r = tilcdc_verify_fb(crtc, fb); if (r) @@ -194,15 +192,21 @@ int tilcdc_crtc_page_flip(struct drm_crtc *crtc, spin_lock_irqsave(&tilcdc_crtc->irq_lock, flags); - next_vblank = ktime_add_us(tilcdc_crtc->last_vblank, - 1000000 / crtc->hwmode.vrefresh); + if (crtc->hwmode.vrefresh && ktime_to_ns(tilcdc_crtc->last_vblank)) { + ktime_t next_vblank; + s64 tdiff; - tdiff = ktime_to_us(ktime_sub(next_vblank, ktime_get())); + next_vblank = ktime_add_us(tilcdc_crtc->last_vblank, + 1000000 / crtc->hwmode.vrefresh); - if (tdiff >= TILCDC_VBLANK_SAFETY_THRESHOLD_US) + tdiff = ktime_to_us(ktime_sub(next_vblank, ktime_get())); + + if (tdiff < TILCDC_VBLANK_SAFETY_THRESHOLD_US) + tilcdc_crtc->next_fb = fb; + } + + if (tilcdc_crtc->next_fb != fb) set_scanout(crtc, fb); - else - tilcdc_crtc->next_fb = fb; tilcdc_crtc->event = event; @@ -248,6 +252,7 @@ void tilcdc_crtc_dpms(struct drm_crtc *crtc, int mode) } drm_flip_work_commit(&tilcdc_crtc->unref_work, priv->wq); + tilcdc_crtc->last_vblank = ktime_set(0, 0); } } |