drm: Advertise async page flip ability through GETCAP ioctl
Let applications know whether the kernel supports asynchronous page
flipping.
Signed-off-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Dave Airlie <airlied@gmail.com>
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index 0c7fec5..78ca151 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -842,6 +842,9 @@
/* dumb ioctl parameters */
uint32_t preferred_depth, prefer_shadow;
+
+ /* whether async page flip is supported or not */
+ bool async_page_flip;
};
#define obj_to_crtc(x) container_of(x, struct drm_crtc, base)