Hi,
Any comment on this?
Gustavo
2016-03-22 Gustavo Padovan <gustavo@xxxxxxxxxxx>:
> 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_display.c | 12 ++++++++++++
> 1 file changed, 12 insertions(+)
>
> diff --git a/drivers/gpu/drm/virtio/virtgpu_display.c b/drivers/gpu/drm/virtio/virtgpu_display.c
> index b70bb8b..4f372e0 100644
> --- a/drivers/gpu/drm/virtio/virtgpu_display.c
> +++ b/drivers/gpu/drm/virtio/virtgpu_display.c
> @@ -274,12 +274,24 @@ static int virtio_gpu_crtc_atomic_check(struct drm_crtc *crtc,
> return 0;
> }
>
> +static void virtio_gpu_crtc_atomic_flush(struct drm_crtc *crtc,
> + struct drm_crtc_state *old_state)
> +{
> + unsigned long flags;
> +
> + 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);
> +}
> +
> static const struct drm_crtc_helper_funcs virtio_gpu_crtc_helper_funcs = {
> .enable = virtio_gpu_crtc_enable,
> .disable = virtio_gpu_crtc_disable,
> .mode_fixup = virtio_gpu_crtc_mode_fixup,
> .mode_set_nofb = virtio_gpu_crtc_mode_set_nofb,
> .atomic_check = virtio_gpu_crtc_atomic_check,
> + .atomic_flush = virtio_gpu_crtc_atomic_flush,
> };
>
> static void virtio_gpu_enc_mode_set(struct drm_encoder *encoder,
> --
> 2.5.0
>
Gustavo
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