From: Gustavo Padovan Date: Thu, 14 Apr 2016 17:58:54 +0000 (-0700) Subject: drm/virtio: send vblank event after crtc updates X-Git-Tag: v4.6~79^2~2 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=9a11d2e7e66b6b8764a2430686b8716637bf812e;p=platform%2Fkernel%2Flinux-amlogic.git 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 Cc: stable@vger.kernel.org Signed-off-by: Dave Airlie --- diff --git a/drivers/gpu/drm/virtio/virtgpu_display.c b/drivers/gpu/drm/virtio/virtgpu_display.c index 4854dac..5fd1fd0 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,