io/drm/drm_irq.c

171 	/* Zero per-crtc vblank stuff */
322 drm_vblank_count(struct drm_device *dev, int crtc)
324 	return (atomic_read(&dev->_vblank_count[crtc]));
327 static void drm_update_vblank_count(struct drm_device *dev, int crtc)
337 	cur_vblank = dev->driver->get_vblank_counter(dev, crtc);
338 	diff = cur_vblank - dev->last_vblank[crtc];
339 	if (cur_vblank < dev->last_vblank[crtc]) {
342 	    crtc, dev->last_vblank[crtc], cur_vblank, diff);
345 	atomic_add(diff, &dev->_vblank_count[crtc]);
351 drm_vblank_get(struct drm_device *dev, int crtc)
363 	atomic_add(1, &dev->vblank_refcount[crtc]);
364 	if (dev->vblank_refcount[crtc] == 1 &&
365 	    atomic_read(&dev->vblank_enabled[crtc]) == 0) {
366 		ret = dev->driver->enable_vblank(dev, crtc);
368 			atomic_dec(&dev->vblank_refcount[crtc]);
370 			atomic_set(&dev->vblank_enabled[crtc], 1);
371 			drm_update_vblank_count(dev, crtc);
380 drm_vblank_put(struct drm_device *dev, int crtc)
384 	atomic_dec(&dev->vblank_refcount[crtc]);
386 	if (dev->vblank_refcount[crtc] == 0)
409 	int crtc, ret = 0;
418 	crtc = modeset.crtc;
419 	if (crtc >= dev->num_crtcs) {
433 		if (!dev->vblank_inmodeset[crtc]) {
434 			dev->vblank_inmodeset[crtc] = 1;
435 			ret = drm_vblank_get(dev, crtc);
439 		if (dev->vblank_inmodeset[crtc]) {
442 			dev->vblank_inmodeset[crtc] = 0;
444 			drm_vblank_put(dev, crtc);
462 	int ret, flags, crtc;
493 	crtc = flags & _DRM_VBLANK_SECONDARY ? 1 : 0;
494 	if (crtc >= dev->num_crtcs) {
498 	ret = drm_vblank_get(dev, crtc);
503 	sequence = drm_vblank_count(dev, crtc);
533 		DRM_WAIT_ON(ret, &dev->vbl_queues[crtc], 3 * DRM_HZ,
534 		    (((drm_vblank_count(dev, crtc)
542 			vblwait.reply.sequence = drm_vblank_count(dev, crtc);
564 	drm_vblank_put(dev, crtc);
577 drm_handle_vblank(struct drm_device *dev, int crtc)
579 	atomic_inc(&dev->_vblank_count[crtc]);
580 	DRM_WAKEUP(&dev->vbl_queues[crtc]);