From: Jesse Barnes <jbarnes@virtuousgeek.org>
Date: Thu, 19 Nov 2009 18:50:22 +0000 (-0800)
Subject: drm: use page flip event to signal flip completion
X-Git-Tag: firefly_0821_release~9833^2~3227^2~86^2~17
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=7bd4d7be5c8c35a401b1589201e5d43a64d3f05b;p=firefly-linux-kernel-4.4.55.git

drm: use page flip event to signal flip completion

We don't actually know which frame number the flip will complete on, so
userspace needs a specific flip notification to tell it when the last flip
completed.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
Acked-by: Kristian Høgsberg <krh@bitplanet.net>
---

diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index ac2fa193072b..3bc870d38a97 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -2527,7 +2527,7 @@ int drm_mode_page_flip_ioctl(struct drm_device *dev,
 			goto out;
 		}
 
-		e->event.base.type = DRM_EVENT_VBLANK;
+		e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
 		e->event.base.length = sizeof e->event;
 		e->event.user_data = page_flip->user_data;
 		e->base.event = &e->event.base;
diff --git a/include/drm/drm.h b/include/drm/drm.h
index 3919a4f792ae..309d0a5ed68d 100644
--- a/include/drm/drm.h
+++ b/include/drm/drm.h
@@ -718,6 +718,7 @@ struct drm_event {
 };
 
 #define DRM_EVENT_VBLANK 0x01
+#define DRM_EVENT_FLIP_COMPLETE 0x02
 
 struct drm_event_vblank {
 	struct drm_event base;