From: Gustavo Padovan <gustavo.padovan@xxxxxxxxxxxxx>
Short circuit the update path for cursors and use the drm async update
infrastructure.
v2: move fb setting to core and use new state (Eric Anholt)
Signed-off-by: Gustavo Padovan <gustavo.padovan@xxxxxxxxxxxxx>
---
I wrote this mostly for testing purposes, not sure if its something that
we actually need for virtio.
---
drivers/gpu/drm/virtio/virtgpu_plane.c | 42 ++++++++++++++++++++++++++++++++++
1 file changed, 42 insertions(+)
diff --git a/drivers/gpu/drm/virtio/virtgpu_plane.c b/drivers/gpu/drm/virtio/virtgpu_plane.c
index 76d5fed..783f146 100644
--- a/drivers/gpu/drm/virtio/virtgpu_plane.c
+++ b/drivers/gpu/drm/virtio/virtgpu_plane.c
@@ -260,6 +260,46 @@ static void virtio_gpu_cursor_plane_update(struct drm_plane *plane,
virtio_gpu_cursor_ping(vgdev, output);
}
+static int virtio_gpu_cursor_plane_async_check(struct drm_plane *plane,
+ struct drm_plane_state *new_state)
+{
+ struct virtio_gpu_output *output;
+
+ if (!plane->state->crtc)
+ return -EINVAL;
+
+ output = drm_crtc_to_virtio_gpu_output(plane->state->crtc);
+ if (!output)
+ return -EINVAL;
+
+ if (plane->state->fb != new_state->fb)
+ return -EINVAL;
+
+ return 0;
+}
+
+static void virtio_gpu_cursor_plane_async_update(struct drm_plane *plane,
+ struct drm_plane_state *new_state)
+{
+ struct drm_device *dev = plane->dev;
+ struct virtio_gpu_device *vgdev = dev->dev_private;
+ struct virtio_gpu_output *output = NULL;
+
+ output = drm_crtc_to_virtio_gpu_output(plane->state->crtc);
+ if (WARN_ON(!output))
+ return;
+
+ if (plane->state->fb != new_state->fb)
+ return;
+
+ DRM_DEBUG("move +%d+%d\n", new_state->crtc_x, new_state->crtc_y);
+
+ output->cursor.hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_MOVE_CURSOR);
+ output->cursor.pos.x = cpu_to_le32(new_state->crtc_x);
+ output->cursor.pos.y = cpu_to_le32(new_state->crtc_y);
+ virtio_gpu_cursor_ping(vgdev, output);
+}
+
static const struct drm_plane_helper_funcs virtio_gpu_primary_helper_funcs = {
.atomic_check = virtio_gpu_plane_atomic_check,
.atomic_update = virtio_gpu_primary_plane_update,
@@ -268,6 +308,8 @@ static const struct drm_plane_helper_funcs virtio_gpu_primary_helper_funcs = {
static const struct drm_plane_helper_funcs virtio_gpu_cursor_helper_funcs = {
.atomic_check = virtio_gpu_plane_atomic_check,
.atomic_update = virtio_gpu_cursor_plane_update,
+ .atomic_async_check = virtio_gpu_cursor_plane_async_check,
+ .atomic_async_update = virtio_gpu_cursor_plane_async_update,
};
struct drm_plane *virtio_gpu_plane_init(struct virtio_gpu_device *vgdev,
--
2.9.3
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