Pull the parameter checking from drm_primary_helper_update() out into
its own function; drivers that provide their own setplane()
implementations rather than using the helper may still want to share
this parameter checking logic.
A few of the checks here were also updated based on suggestions by
Ville Syrjälä.
v3:
- s/primary_helper/plane_helper/ --- this checking logic may be useful
for other types of planes as well.
- Fix visibility check (need to dereference visibility pointer)
v2:
- Pass src/dest/clip rects and min/max scaling down to helper to avoid
duplication of effort between helper and drivers (suggested by
Ville).
- Allow caller to specify whether the primary plane should be
updatable while the crtc is disabled.
Cc: dri-devel@lists.freedesktop.org
Reviewed-by: Chon Ming Lee <chon.ming.lee@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Acked-by: Dave Airlie <airlied@gmail.com>
[danvet: Include header properly and fixup declaration mismatch to
make this compile.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Include the drm_plane_helper.h header file to fix the following sparse
warnings:
CHECK drivers/gpu/drm/drm_plane_helper.c
drivers/gpu/drm/drm_plane_helper.c:102:5: warning: symbol 'drm_primary_helper_update' was not declared. Should it be static?
drivers/gpu/drm/drm_plane_helper.c:219:5: warning: symbol 'drm_primary_helper_disable' was not declared. Should it be static?
drivers/gpu/drm/drm_plane_helper.c:233:6: warning: symbol 'drm_primary_helper_destroy' was not declared. Should it be static?
drivers/gpu/drm/drm_plane_helper.c:241:30: warning: symbol 'drm_primary_helper_funcs' was not declared. Should it be static?
drivers/gpu/drm/drm_plane_helper.c:259:18: warning: symbol 'drm_primary_helper_create_plane' was not declared. Should it be static?
Doing that makes gcc complain as follows:
CC drivers/gpu/drm/drm_plane_helper.o
drivers/gpu/drm/drm_plane_helper.c:260:19: error: conflicting types for 'drm_primary_helper_create_plane'
struct drm_plane *drm_primary_helper_create_plane(struct drm_device *dev,
^
In file included from drivers/gpu/drm/drm_plane_helper.c:29:0:
include/drm/drm_plane_helper.h:42:19: note: previous declaration of 'drm_primary_helper_create_plane' was here
struct drm_plane *drm_primary_helper_create_plane(struct drm_device *dev,
^
drivers/gpu/drm/drm_plane_helper.c: In function 'drm_primary_helper_create_plane':
drivers/gpu/drm/drm_plane_helper.c:274:11: warning: assignment discards 'const' qualifier from pointer target type
formats = safe_modeset_formats;
^
In file included from include/linux/linkage.h:6:0,
from include/linux/kernel.h:6,
from include/drm/drmP.h:45,
from drivers/gpu/drm/drm_plane_helper.c:27:
drivers/gpu/drm/drm_plane_helper.c: At top level:
drivers/gpu/drm/drm_plane_helper.c:289:15: error: conflicting types for 'drm_primary_helper_create_plane'
EXPORT_SYMBOL(drm_primary_helper_create_plane);
^
include/linux/export.h:57:21: note: in definition of macro '__EXPORT_SYMBOL'
extern typeof(sym) sym; \
^
drivers/gpu/drm/drm_plane_helper.c:289:1: note: in expansion of macro 'EXPORT_SYMBOL'
EXPORT_SYMBOL(drm_primary_helper_create_plane);
^
In file included from drivers/gpu/drm/drm_plane_helper.c:29:0:
include/drm/drm_plane_helper.h:42:19: note: previous declaration of 'drm_primary_helper_create_plane' was here
struct drm_plane *drm_primary_helper_create_plane(struct drm_device *dev,
^
Which can easily be fixed by making the signatures of the implementation
and the prototype match.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
When we expose non-overlay planes to userspace, they will become
accessible via standard userspace plane API's. We should be able to
handle the standard plane operations against primary planes in a generic
way via the modeset handler.
Drivers that can program primary planes more efficiently, that want to
use their own primary plane structure to track additional information,
or that don't have the limitations assumed by the helpers are free to
provide their own implementation of some or all of these handlers.
v3: Tweak kerneldoc formatting slightly to avoid ugliness
v2:
- Move plane helpers to a new file (drm_plane_helper.c)
- Tighten checks on update handler (check for scaling, CRTC coverage,
subpixel positioning)
- Pass proper panning parameters to modeset interface
- Disallow disabling primary plane (and thus CRTC) if other planes are
still active on the CRTC.
- Use a minimal format list that should work on all hardware/drivers.
Drivers may call this function with a more accurate plane list to
enable additional formats they can support.
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Matt Roper
Thierry Reding