[PATCH 19/24] drm/virtio: implement blob resources: blob display integration

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SCANOUT_BLOB forwards the DRM framebuffer metadata to the host. The
modifier is intentionally left out -- it may be possible to query
the host for that.

We also assume one blob resource per DRM framebuffer.  That too is
an intentional simplification.

Signed-off-by: Gurchetan Singh <gurchetansingh@xxxxxxxxxxxx>
Acked-by: Tomeu Vizoso <tomeu.vizoso@xxxxxxxxxxxxx>
---
 drivers/gpu/drm/virtio/virtgpu_plane.c | 23 +++++++++++++++++------
 1 file changed, 17 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/virtio/virtgpu_plane.c b/drivers/gpu/drm/virtio/virtgpu_plane.c
index 52d24179bcec..1e0754e77723 100644
--- a/drivers/gpu/drm/virtio/virtgpu_plane.c
+++ b/drivers/gpu/drm/virtio/virtgpu_plane.c
@@ -172,12 +172,23 @@ static void virtio_gpu_primary_plane_update(struct drm_plane *plane,
 			  plane->state->src_h >> 16,
 			  plane->state->src_x >> 16,
 			  plane->state->src_y >> 16);
-		virtio_gpu_cmd_set_scanout(vgdev, output->index,
-					   bo->hw_res_handle,
-					   plane->state->src_w >> 16,
-					   plane->state->src_h >> 16,
-					   plane->state->src_x >> 16,
-					   plane->state->src_y >> 16);
+
+		if (bo->host3d_blob || bo->guest_blob) {
+			virtio_gpu_cmd_set_scanout_blob(
+						vgdev, output->index, bo,
+						plane->state->fb,
+						plane->state->src_w >> 16,
+						plane->state->src_h >> 16,
+						plane->state->src_x >> 16,
+						plane->state->src_y >> 16);
+		} else {
+			virtio_gpu_cmd_set_scanout(vgdev, output->index,
+						   bo->hw_res_handle,
+						   plane->state->src_w >> 16,
+						   plane->state->src_h >> 16,
+						   plane->state->src_x >> 16,
+						   plane->state->src_y >> 16);
+		}
 	}
 
 	virtio_gpu_cmd_resource_flush(vgdev, bo->hw_res_handle,
-- 
2.24.1

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