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| author | Gustavo Padovan <gustavo.padovan@collabora.co.uk> | 2016-04-14 19:58:54 +0200 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2016-04-27 01:32:04 +0200 |
| commit | 9a11d2e7e66b6b8764a2430686b8716637bf812e (patch) | |
| tree | a03fb96546e7dd0665360cdb44be91dc3d8bc018 | |
| parent | drm/dp/mst: Restore primary hub guid on resume (diff) | |
| download | linux-9a11d2e7e66b6b8764a2430686b8716637bf812e.tar.xz linux-9a11d2e7e66b6b8764a2430686b8716637bf812e.zip | |
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>
| -rw-r--r-- | drivers/gpu/drm/virtio/virtgpu_display.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/gpu/drm/virtio/virtgpu_display.c b/drivers/gpu/drm/virtio/virtgpu_display.c index 4854dac87e24..5fd1fd06effc 100644 --- a/drivers/gpu/drm/virtio/virtgpu_display.c +++ b/drivers/gpu/drm/virtio/virtgpu_display.c @@ -267,11 +267,23 @@ 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_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, |