50     struct drm_psb_vsync_set_arg arg;  in control()  local
51     memset(&arg, 0, sizeof(struct drm_psb_vsync_set_arg));  in control()
54     arg.vsync.pipe = disp;  in control()
57         arg.vsync_operation_mask = VSYNC_ENABLE;  in control()
59         arg.vsync_operation_mask = VSYNC_DISABLE;  in control()
62     return drm->writeReadIoctl(DRM_PSB_VSYNC_SET, &arg, sizeof(arg));  in control()
69     struct drm_psb_vsync_set_arg arg;  in wait()  local
70     memset(&arg, 0, sizeof(struct drm_psb_vsync_set_arg));  in wait()
72     arg.vsync_operation_mask = VSYNC_WAIT;  in wait()
75     arg.vsync.pipe = disp;  in wait()
78     bool ret = drm->writeReadIoctl(DRM_PSB_VSYNC_SET, &arg, sizeof(arg));  in wait()
79     timestamp = (int64_t)arg.vsync.timestamp;  in wait()