drm/atomic: Add __drm_atomic_helper_plane_reset
authorAlexandru Gheorghe <alexandru-cosmin.gheorghe@arm.com>
Sat, 4 Aug 2018 16:15:21 +0000 (17:15 +0100)
committerAlexandru Gheorghe <alexandru-cosmin.gheorghe@arm.com>
Mon, 6 Aug 2018 10:41:04 +0000 (11:41 +0100)
commit7f4de521001f4ea705d505c9f91f58d0f56a0e6d
tree7cdb8af7ea01cd506438b67f2d1d5fa89c1408f4
parentbc0d332daef3fb9f58e34cb4d03d99f2c84b11cb
drm/atomic: Add __drm_atomic_helper_plane_reset

There are a lot of drivers that subclass drm_plane_state, all of them
duplicate the code that links together the plane with plane_state.

On top of that, drivers that enable core properties also have to
duplicate the code for initializing the properties to their default
values, which in all cases are the same as the defaults from core.

Change since v1:
- Make it consistent with the other helpers and require that both
  plane and state not be NULL, suggested by Boris Brezillon and
  Philipp Zabel.

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Alexandru Gheorghe <alexandru-cosmin.gheorghe@arm.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20180804161530.12275-2-alexandru-cosmin.gheorghe@arm.com
drivers/gpu/drm/drm_atomic_helper.c
include/drm/drm_atomic_helper.h