From: Gustavo Padovan <gustavo.padovan@xxxxxxxxxxxxxxx>
virtio_gpu was failing to send vblank events when using the atomic IOCTL
with the DRM_MODE_PAGE_FLIP_EVENT flag set. This patch fixes each and
enables atomic pageflips updates.
Signed-off-by: Gustavo Padovan <gustavo.padovan@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/virtio/virtgpu_plane.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/virtio/virtgpu_plane.c b/drivers/gpu/drm/virtio/virtgpu_plane.c
index 70b44a2..20260ad 100644
--- a/drivers/gpu/drm/virtio/virtgpu_plane.c
+++ b/drivers/gpu/drm/virtio/virtgpu_plane.c
@@ -63,9 +63,11 @@ static void virtio_gpu_plane_atomic_update(struct drm_plane *plane,
{
struct drm_device *dev = plane->dev;
struct virtio_gpu_device *vgdev = dev->dev_private;
- struct virtio_gpu_output *output = drm_crtc_to_virtio_gpu_output(plane->crtc);
+ struct drm_crtc *crtc = plane->crtc;
+ struct virtio_gpu_output *output = drm_crtc_to_virtio_gpu_output(crtc);
struct virtio_gpu_framebuffer *vgfb;
struct virtio_gpu_object *bo;
+ unsigned long flags;
uint32_t handle;
if (plane->state->fb) {
@@ -96,6 +98,11 @@ static void virtio_gpu_plane_atomic_update(struct drm_plane *plane,
plane->state->crtc_y,
plane->state->crtc_w,
plane->state->crtc_h);
+
+ spin_lock_irqsave(&crtc->dev->event_lock, flags);
+ if (crtc->state->event)
+ drm_crtc_send_vblank_event(crtc, crtc->state->event);
+ spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
}
--
2.5.0
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