On Thu, Dec 08, 2016 at 02:45:25PM +0100, Maarten Lankhorst wrote:
> Atomic drivers may set properties like rotation on the same fb, which
> may require a call to prepare_fb even when framebuffer stays identical.
>
> Instead of handling all the special cases in the core, let the driver
> decide when prepare_fb and cleanup_fb are noops.
>
> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
I think this makes sense, but would be really good to get a pile of acks
from driver maintainers on this one. Rob, Eric, Laurent, others?
-Daniel
> ---
> drivers/gpu/drm/drm_atomic_helper.c | 9 ---------
> 1 file changed, 9 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
> index 23767df72615..d19563651e07 100644
> --- a/drivers/gpu/drm/drm_atomic_helper.c
> +++ b/drivers/gpu/drm/drm_atomic_helper.c
> @@ -1664,9 +1664,6 @@ int drm_atomic_helper_prepare_planes(struct drm_device *dev,
>
> funcs = plane->helper_private;
>
> - if (!drm_atomic_helper_framebuffer_changed(dev, state, plane_state->crtc))
> - continue;
> -
> if (funcs->prepare_fb) {
> ret = funcs->prepare_fb(plane, plane_state);
> if (ret)
> @@ -1683,9 +1680,6 @@ int drm_atomic_helper_prepare_planes(struct drm_device *dev,
> if (j >= i)
> continue;
>
> - if (!drm_atomic_helper_framebuffer_changed(dev, state, plane_state->crtc))
> - continue;
> -
> funcs = plane->helper_private;
>
> if (funcs->cleanup_fb)
> @@ -1952,9 +1946,6 @@ void drm_atomic_helper_cleanup_planes(struct drm_device *dev,
> for_each_plane_in_state(old_state, plane, plane_state, i) {
> const struct drm_plane_helper_funcs *funcs;
>
> - if (!drm_atomic_helper_framebuffer_changed(dev, old_state, plane_state->crtc))
> - continue;
> -
> funcs = plane->helper_private;
>
> if (funcs->cleanup_fb)
> --
> 2.7.4
>
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--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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