[Nouveau] [PATCH 1/4] drm/atomic: Save flip flags in drm_plane_state

[Daniel Vetter]

On Mon, Jan 16, 2017 at 10:44:55AM -0500, Andrey Grodzovsky wrote:
> Allows using atomic flip helpers for drivers
> using ASYNC flip.
> Remove ASYNC_FLIP restriction in helpers and
> caches the page flip flags in drm_plane_state
> to be used in the low level drivers.
> 
> Signed-off-by: Andrey Grodzovsky <Andrey.Grodzovsky at amd.com>

It's mostly guesswork, but I think we should have the flip flags in the
crtc, not in each plane. Similar to how we move the event from planes to
crtc.
-Daniel

> ---
>  drivers/gpu/drm/drm_atomic_helper.c | 10 +++-------
>  include/drm/drm_plane.h             |  8 ++++++++
>  2 files changed, 11 insertions(+), 7 deletions(-)
> 
> diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
> index a4e5477..f83dc43 100644
> --- a/drivers/gpu/drm/drm_atomic_helper.c
> +++ b/drivers/gpu/drm/drm_atomic_helper.c
> @@ -2737,7 +2737,8 @@ static int page_flip_common(
>  				struct drm_atomic_state *state,
>  				struct drm_crtc *crtc,
>  				struct drm_framebuffer *fb,
> -				struct drm_pending_vblank_event *event)
> +				struct drm_pending_vblank_event *event,
> +				uint32_t flags)
>  {
>  	struct drm_plane *plane = crtc->primary;
>  	struct drm_plane_state *plane_state;
> @@ -2754,6 +2755,7 @@ static int page_flip_common(
>  	if (IS_ERR(plane_state))
>  		return PTR_ERR(plane_state);
>  
> +	plane_state->pflip_flags = flags;
>  
>  	ret = drm_atomic_set_crtc_for_plane(plane_state, crtc);
>  	if (ret != 0)
> @@ -2800,9 +2802,6 @@ int drm_atomic_helper_page_flip(struct drm_crtc *crtc,
>  	struct drm_atomic_state *state;
>  	int ret = 0;
>  
> -	if (flags & DRM_MODE_PAGE_FLIP_ASYNC)
> -		return -EINVAL;
> -
>  	state = drm_atomic_state_alloc(plane->dev);
>  	if (!state)
>  		return -ENOMEM;
> @@ -2865,9 +2864,6 @@ int drm_atomic_helper_page_flip_target(
>  	struct drm_crtc_state *crtc_state;
>  	int ret = 0;
>  
> -	if (flags & DRM_MODE_PAGE_FLIP_ASYNC)
> -		return -EINVAL;
> -
>  	state = drm_atomic_state_alloc(plane->dev);
>  	if (!state)
>  		return -ENOMEM;
> diff --git a/include/drm/drm_plane.h b/include/drm/drm_plane.h
> index db3bbde..86d8ffc 100644
> --- a/include/drm/drm_plane.h
> +++ b/include/drm/drm_plane.h
> @@ -122,6 +122,14 @@ struct drm_plane_state {
>  	 */
>  	bool visible;
>  
> +
> +	/**
> +	 * @pflip_flags:
> +	 *
> +	 * Flip related config options
> +	 */
> +	u32 pflip_flags;
> +
>  	struct drm_atomic_state *state;
>  };
>  
> -- 
> 1.9.1
> 
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-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch