From 3ebe7d1656cc9dbf7ac889bac227107acacc6f4a Mon Sep 17 00:00:00 2001
From: Jesse Barnes <jbarnes@virtuousgeek.org>
Date: Fri, 20 Nov 2009 12:16:56 -0800
Subject: libdrm: add support for page flip completion events

---
 libdrm/xf86drm.h     |  6 ++++++
 libdrm/xf86drmMode.c | 12 +++++++++++-
 shared-core/drm.h    |  1 +
 3 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/libdrm/xf86drm.h b/libdrm/xf86drm.h
index 2cb9c9e9..d75ec4f3 100644
--- a/libdrm/xf86drm.h
+++ b/libdrm/xf86drm.h
@@ -682,6 +682,12 @@ typedef struct _drmEventContext {
 			       unsigned int tv_usec,
 			       void *user_data);
 
+	void (*pageflip_handler)(int fd,
+				 unsigned int sequence,
+				 unsigned int tv_sec,
+				 unsigned int tv_usec,
+				 void *user_data);
+
 } drmEventContext, *drmEventContextPtr;
 
 extern int drmHandleEvent(int fd, drmEventContextPtr evctx);
diff --git a/libdrm/xf86drmMode.c b/libdrm/xf86drmMode.c
index 400ad49d..7d318eaa 100644
--- a/libdrm/xf86drmMode.c
+++ b/libdrm/xf86drmMode.c
@@ -700,7 +700,17 @@ int drmHandleEvent(int fd, drmEventContextPtr evctx)
 					      vblank->tv_usec,
 					      U642VOID (vblank->user_data));
 			break;
-			
+		case DRM_EVENT_FLIP_COMPLETE:
+			if (evctx->version < 1 ||
+			    evctx->pageflip_handler == NULL)
+				break;
+			vblank = (struct drm_event_vblank *) e;
+			evctx->pageflip_handler(fd,
+						vblank->sequence,
+						vblank->tv_sec,
+						vblank->tv_usec,
+						U642VOID (vblank->user_data));
+			break;
 		default:
 			break;
 		}
diff --git a/shared-core/drm.h b/shared-core/drm.h
index f820e458..c381874f 100644
--- a/shared-core/drm.h
+++ b/shared-core/drm.h
@@ -828,6 +828,7 @@ struct drm_event {
 };
 
 #define DRM_EVENT_VBLANK 0x01
+#define DRM_EVENT_FLIP_COMPLETE 0x02
 
 struct drm_event_vblank {
 	struct drm_event base;
-- 
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