[PATCH 06/27] drm/sun4i: Implement some semblance of vblank event handling

[Maarten Lankhorst]

Op 08-06-16 om 14:18 schreef Daniel Vetter:
> atomic_flush seems to be the right place, right after we commit the
> plane updates. Again use the fullproof version, since the pipe might
> be off.
>
> Cc: Boris Brezillon <boris.brezillon at free-electrons.com>
> Cc: Maxime Ripard <maxime.ripard at free-electrons.com>
> Signed-off-by: Daniel Vetter <daniel.vetter at intel.com>
> ---
>  drivers/gpu/drm/sun4i/sun4i_crtc.c | 12 ++++++++++++
>  1 file changed, 12 insertions(+)
>
> diff --git a/drivers/gpu/drm/sun4i/sun4i_crtc.c b/drivers/gpu/drm/sun4i/sun4i_crtc.c
> index 4182a21f5923..f628b6d8f23f 100644
> --- a/drivers/gpu/drm/sun4i/sun4i_crtc.c
> +++ b/drivers/gpu/drm/sun4i/sun4i_crtc.c
> @@ -51,10 +51,22 @@ static void sun4i_crtc_atomic_flush(struct drm_crtc *crtc,
>  {
>  	struct sun4i_crtc *scrtc = drm_crtc_to_sun4i_crtc(crtc);
>  	struct sun4i_drv *drv = scrtc->drv;
> +	struct drm_pending_vblank_event *event = crtc->state->event;
>  
>  	DRM_DEBUG_DRIVER("Committing plane changes\n");
>  
>  	sun4i_backend_commit(drv->backend);
> +
> +	if (event) {
> +		crtc->state->event = NULL;
> +
> +		spin_lock_irq(&crtc->dev->event_lock);
> +		if (drm_crtc_vblank_get(crtc) == 0)
> +			drm_crtc_arm_vblank_event(crtc, event);
> +		else
> +			drm_crtc_send_vblank_event(crtc, event);
> +		spin_unlock_irq(&crtc->dev->event_lock);
> +	}
>  }
>  
>  static void sun4i_crtc_disable(struct drm_crtc *crtc)

Reviewed-by: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>