[PATCH 03/36] drm/plane: Add optional ->atomic_disable() callback

[Gustavo Padovan]

2015-01-20 Thierry Reding <thierry.reding at gmail.com>:

> From: Thierry Reding <treding at nvidia.com>
> 
> In order to prevent drivers from having to perform the same checks over
> and over again, add an optional ->atomic_disable callback which the core
> calls under the right circumstances.
> 
> v2: pass old state and detect edges to avoid calling ->atomic_disable on
> already disabled planes, remove redundant comment (Daniel Vetter)
> 
> v3: rename helper to drm_atomic_plane_disabling() to clarify that it is
> checking for transitions, move helper to drm_atomic_helper.h, clarify
> check for !old_state and its relation to transitional helpers
> 
> Signed-off-by: Thierry Reding <treding at nvidia.com>
> ---
>  drivers/gpu/drm/drm_atomic_helper.c |  9 ++++++++-
>  drivers/gpu/drm/drm_plane_helper.c  | 10 +++++++++-
>  include/drm/drm_atomic_helper.h     | 37 +++++++++++++++++++++++++++++++++++++
>  include/drm/drm_plane_helper.h      |  3 +++
>  4 files changed, 57 insertions(+), 2 deletions(-)

Reviewed-by: Gustavo Padovan <gustavo.padovan at collabora.co.uk>

	Gustavo