drm/atomic-helpers: Recover full cursor plane behaviour
Cursor plane updates have historically been fully async and mutliple
updates batched together for the next vsync. And userspace relies upon
that. Since implementing a full queue of async atomic updates is a bit
of work lets just recover the cursor specific behaviour with a hint
flag and some hacks to drop the vblank wait.
v2: Fix kerneldoc, reported by Wu Fengguang.
Reviewed-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index 0a738e1..019c9b5 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -909,6 +909,7 @@
* struct struct drm_atomic_state - the global state object for atomic updates
* @dev: parent DRM device
* @allow_modeset: allow full modeset
+ * @legacy_cursor_update: hint to enforce legacy cursor ioctl semantics
* @planes: pointer to array of plane pointers
* @plane_states: pointer to array of plane states pointers
* @crtcs: pointer to array of CRTC pointers
@@ -921,6 +922,7 @@
struct drm_atomic_state {
struct drm_device *dev;
bool allow_modeset : 1;
+ bool legacy_cursor_update : 1;
struct drm_plane **planes;
struct drm_plane_state **plane_states;
struct drm_crtc **crtcs;