diff options
Diffstat (limited to 'include/drm/drmP.h')
| -rw-r--r-- | include/drm/drmP.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/drm/drmP.h b/include/drm/drmP.h index d2f64b9ccefd..6b4fbf3a3263 100644 --- a/include/drm/drmP.h +++ b/include/drm/drmP.h @@ -1313,6 +1313,17 @@ extern int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev, extern void drm_calc_timestamping_constants(struct drm_crtc *crtc, const struct drm_display_mode *mode); +/** + * drm_crtc_vblank_waitqueue - get vblank waitqueue for the CRTC + * @crtc: which CRTC's vblank waitqueue to retrieve + * + * This function returns a pointer to the vblank waitqueue for the CRTC. + * Drivers can use this to implement vblank waits using wait_event() & co. + */ +static inline wait_queue_head_t *drm_crtc_vblank_waitqueue(struct drm_crtc *crtc) +{ + return &crtc->dev->vblank[drm_crtc_index(crtc)].queue; +} /* Modesetting support */ extern void drm_vblank_pre_modeset(struct drm_device *dev, int crtc); |