libdrm: add libdrm support for page flip ioctl

5 files changed, 45 insertions, 1 deletions

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);
diff --git a/shared-core/drm.h b/shared-core/drm.h
index 089e184a..c381874f 100644
--- a/shared-core/drm.h
+++ b/shared-core/drm.h
@@ -795,6 +795,7 @@ struct drm_gem_open {
 #define DRM_IOCTL_MODE_GETFB		DRM_IOWR(0xAD, struct drm_mode_fb_cmd)
 #define DRM_IOCTL_MODE_ADDFB		DRM_IOWR(0xAE, struct drm_mode_fb_cmd)
 #define DRM_IOCTL_MODE_RMFB		DRM_IOWR(0xAF, uint32_t)
+#define DRM_IOCTL_MODE_PAGE_FLIP	DRM_IOWR(0xB0, struct drm_mode_crtc_page_flip)
 
 /*@}*/
 
@@ -827,6 +828,7 @@ struct drm_event {
 };
 
 #define DRM_EVENT_VBLANK 0x01
+#define DRM_EVENT_FLIP_COMPLETE 0x02
 
 struct drm_event_vblank {
 	struct drm_event base;
diff --git a/shared-core/drm_mode.h b/shared-core/drm_mode.h
index 9b92733d..fceac3c8 100644
--- a/shared-core/drm_mode.h
+++ b/shared-core/drm_mode.h
@@ -270,4 +270,15 @@ struct drm_mode_crtc_lut {
 	uint64_t blue;
 };
 
+#define DRM_MODE_PAGE_FLIP_EVENT 0x01
+#define DRM_MODE_PAGE_FLIP_FLAGS DRM_MODE_PAGE_FLIP_EVENT
+
+struct drm_mode_crtc_page_flip {
+	uint32_t crtc_id;
+	uint32_t fb_id;
+	uint32_t flags;
+	uint32_t reserved;
+	uint64_t user_data;
+};
+
 #endif