[PATCH [RFC] v3 3/7] drm/atomic: Re-route the async flip based on the flag

[Arun R Murthy <arun.r.murthy@intel.com>]

At present the async flip is being done by the flag
DRM_MODE_PAGE_FLIP_ASYNC. New plane property is being added for async
flip on per plane basis. Allow existing users using the flag
DRM_MODE_PAGE_FLIP_ASYNC to do async flip and internally set the
plane_state flags for async flip.

Signed-off-by: Arun R Murthy <arun.r.murthy@intel.com>
---
 drivers/gpu/drm/drm_atomic_uapi.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/gpu/drm/drm_atomic_uapi.c b/drivers/gpu/drm/drm_atomic_uapi.c
index 4a2da81abd713127d5157e84f2cae2f8b34a4dd6..eb4d7146f1f92eec58aba99ce6f5b678c0959b66 100644
--- a/drivers/gpu/drm/drm_atomic_uapi.c
+++ b/drivers/gpu/drm/drm_atomic_uapi.c
@@ -1190,6 +1190,7 @@ int drm_atomic_set_property(struct drm_atomic_state *state,
 		ret = drm_atomic_connector_set_property(connector,
 				connector_state, file_priv,
 				prop, prop_value);
+
 		break;
 	}
 	case DRM_MODE_OBJECT_CRTC: {
@@ -1256,6 +1257,10 @@ int drm_atomic_set_property(struct drm_atomic_state *state,
 				plane_state, file_priv,
 				prop, prop_value);
 
+		/* Hack to make the legacy DRM_MODE_PAGE_FLIP_ASYNC work with atomic_ioctl() */
+		if (async_flip && prop == config->prop_fb_id)
+			plane_state->async_flip = true;
+
 		break;
 	}
 	case DRM_MODE_OBJECT_COLOROP: {
@@ -1591,6 +1596,12 @@ int drm_mode_atomic_ioctl(struct drm_device *dev,
 			return -EINVAL;
 		}
 
+		/*
+		 * Legacy way of handling async flip using the flag
+		 * DRM_MODE_PAGE_FLIP_ASYNC is still supported using the local
+		 * flag async_flip. Once the UMD moves to the plane property
+		 * for async flip this should be removed.
+		 */
 		async_flip = true;
 	}
 

-- 
2.25.1