drm/virtio: send vblank event after crtc updates
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@collabora.co.uk> Cc: stable@vger.kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
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@ -267,11 +267,23 @@ static int virtio_gpu_crtc_atomic_check(struct drm_crtc *crtc,
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return 0;
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}
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static void virtio_gpu_crtc_atomic_flush(struct drm_crtc *crtc,
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struct drm_crtc_state *old_state)
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{
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unsigned long flags;
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spin_lock_irqsave(&crtc->dev->event_lock, flags);
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if (crtc->state->event)
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drm_crtc_send_vblank_event(crtc, crtc->state->event);
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spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
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}
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static const struct drm_crtc_helper_funcs virtio_gpu_crtc_helper_funcs = {
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.enable = virtio_gpu_crtc_enable,
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.disable = virtio_gpu_crtc_disable,
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.mode_set_nofb = virtio_gpu_crtc_mode_set_nofb,
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.atomic_check = virtio_gpu_crtc_atomic_check,
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.atomic_flush = virtio_gpu_crtc_atomic_flush,
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};
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static void virtio_gpu_enc_mode_set(struct drm_encoder *encoder,
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