diff options
Diffstat (limited to 'sys/dev/pci/drm/drm_irq.c')
| -rw-r--r-- | sys/dev/pci/drm/drm_irq.c | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/sys/dev/pci/drm/drm_irq.c b/sys/dev/pci/drm/drm_irq.c index d94f4f89835..469e4bab0ad 100644 --- a/sys/dev/pci/drm/drm_irq.c +++ b/sys/dev/pci/drm/drm_irq.c @@ -275,6 +275,86 @@ drm_vblank_put(struct drm_device *dev, int crtc) mtx_leave(&dev->vblank->vb_lock); } +void drm_vblank_off(struct drm_device *dev, int crtc) +{ + printf("%s stub\n", __func__); +#ifdef notyet + struct drm_pending_vblank_event *e, *t; + struct timeval now; + unsigned int seq; + + mtx_enter(&dev->vblank->vb_lock); + vblank_disable_and_save(dev, crtc); + mtx_enter(&dev->event_lock); + wakeup(&dev->_vblank_count[crtc]); + + /* Send any queued vblank events, lest the natives grow disquiet */ + seq = drm_vblank_count_and_time(dev, crtc, &now); + list_for_each_entry_safe(e, t, &dev->vblank_event_list, base.link) { + if (e->pipe != crtc) + continue; + DRM_DEBUG("Sending premature vblank event on disable: \ + wanted %d, current %d\n", + e->event.sequence, seq); + + e->event.sequence = seq; + e->event.tv_sec = now.tv_sec; + e->event.tv_usec = now.tv_usec; + drm_vblank_put(dev, e->pipe); + list_move_tail(&e->base.link, &e->base.file_priv->event_list); + drm_event_wakeup(&e->base); + CTR3(KTR_DRM, "vblank_event_delivered %d %d %d", + e->base.pid, e->pipe, e->event.sequence); + } + + mtx_leave(&dev->event_lock); + mtx_leave(&dev->vblank->vb_lock); +#endif +} + +/** + * drm_vblank_pre_modeset - account for vblanks across mode sets + * @dev: DRM device + * @crtc: CRTC in question + * @post: post or pre mode set? + * + * Account for vblank events across mode setting events, which will likely + * reset the hardware frame counter. + */ +void drm_vblank_pre_modeset(struct drm_device *dev, int crtc) +{ + /* vblank is not initialized (IRQ not installed ?) */ + if (!dev->num_crtcs) + return; + /* + * To avoid all the problems that might happen if interrupts + * were enabled/disabled around or between these calls, we just + * have the kernel take a reference on the CRTC (just once though + * to avoid corrupting the count if multiple, mismatch calls occur), + * so that interrupts remain enabled in the interim. + */ + if (!dev->vblank_inmodeset[crtc]) { + dev->vblank_inmodeset[crtc] = 0x1; + if (drm_vblank_get(dev, crtc) == 0) + dev->vblank_inmodeset[crtc] |= 0x2; + } +} + +void drm_vblank_post_modeset(struct drm_device *dev, int crtc) +{ + + if (dev->vblank_inmodeset[crtc]) { + mtx_enter(&dev->vblank->vb_lock); + dev->vblank_disable_allowed = 1; + mtx_leave(&dev->vblank->vb_lock); + + if (dev->vblank_inmodeset[crtc] & 0x2) + drm_vblank_put(dev, crtc); + + dev->vblank_inmodeset[crtc] = 0; + } +} + int drm_modeset_ctl(struct drm_device *dev, void *data, struct drm_file *file_priv) { |