From b80bcffba6175c53ebe1f1bd02730de0338cc039 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Kristian=20H=C3=B8gsberg?= <krh@sasori.(none)>
Date: Thu, 12 Nov 2009 14:06:45 -0500
Subject: libdrm: add libdrm support for page flip ioctl

---
 libdrm/xf86drm.h     |  6 ++++++
 libdrm/xf86drmMode.c | 25 ++++++++++++++++++++++++-
 libdrm/xf86drmMode.h |  2 ++
 3 files changed, 32 insertions(+), 1 deletion(-)

(limited to 'libdrm')

diff --git a/libdrm/xf86drm.h b/libdrm/xf86drm.h
index 2cb9c9e9..0c1fcbbf 100644
--- a/libdrm/xf86drm.h
+++ b/libdrm/xf86drm.h
@@ -682,6 +682,12 @@ typedef struct _drmEventContext {
 			       unsigned int tv_usec,
 			       void *user_data);
 
+	void (*page_flip_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 6d85113a..e9516851 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->page_flip_handler == NULL)
+				break;
+			vblank = (struct drm_event_vblank *) e;
+			evctx->page_flip_handler(fd,
+						 vblank->sequence,
+						 vblank->tv_sec,
+						 vblank->tv_usec,
+						 U642VOID (vblank->user_data));
+			break;
 		default:
 			break;
 		}
@@ -710,3 +720,16 @@ int drmHandleEvent(int fd, drmEventContextPtr evctx)
 	return 0;
 }
 
+int drmModePageFlip(int fd, uint32_t crtc_id, uint32_t fb_id,
+		    uint32_t flags, void *user_data)
+{
+	struct drm_mode_crtc_page_flip flip;
+
+	flip.fb_id = fb_id;
+	flip.crtc_id = crtc_id;
+	flip.user_data = VOID2U64(user_data);
+	flip.flags = flags;
+	flip.reserved = 0;
+
+	return drmIoctl(fd, DRM_IOCTL_MODE_PAGE_FLIP, &flip);
+}
diff --git a/libdrm/xf86drmMode.h b/libdrm/xf86drmMode.h
index 62304bb9..705369fe 100644
--- a/libdrm/xf86drmMode.h
+++ b/libdrm/xf86drmMode.h
@@ -362,3 +362,5 @@ extern int drmModeCrtcSetGamma(int fd, uint32_t crtc_id, uint32_t size,
 			       uint16_t *red, uint16_t *green, uint16_t *blue);
 extern int drmModeCrtcGetGamma(int fd, uint32_t crtc_id, uint32_t size,
 			       uint16_t *red, uint16_t *green, uint16_t *blue);
+extern int drmModePageFlip(int fd, uint32_t crtc_id, uint32_t fb_id,
+			   uint32_t flags, void *user_data);
-- 
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