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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>
This commit is contained in:
Gustavo Padovan 2016-04-14 10:58:54 -07:00 committed by Dave Airlie
parent 9dc0487d96
commit 9a11d2e7e6
1 changed files with 12 additions and 0 deletions
drivers/gpu/drm/virtio
virtgpu_display.c

12
drivers/gpu/drm/virtio/virtgpu_display.c
View File

@ -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,