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drm/atomic: add plane iterator macros

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Add helper macros to iterate the current, or incoming set of planes
attached to a crtc.  These helpers are only available for drivers
converted to use atomic-helpers.

Signed-off-by: Rob Clark <robdclark@gmail.com>
[danvet: Squash in fixup from Rob to move the planemask iterator to
drm_crtc.h and document it. That one is needed by the atomic ioctl so
can't be in a helper library.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Rob Clark 2014-11-25 20:29:46 -05:00 • committed by Daniel Vetter
parent 6ddd388ab2
commit dd275956aa
3 changed files with 38 additions and 0 deletions
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13
include/drm/drm_crtc.h
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@ -1062,6 +1062,19 @@ struct drm_mode_config {
uint32_t cursor_width, cursor_height;
};
/**
* drm_for_each_plane_mask - iterate over planes specified by bitmask
* @plane: the loop cursor
* @dev: the DRM device
* @plane_mask: bitmask of plane indices
*
* Iterate over all planes specified by bitmask.
*/
#define drm_for_each_plane_mask(plane, dev, plane_mask) \
list_for_each_entry((plane), &(dev)->mode_config.plane_list, head) \
if ((plane_mask) & (1 << drm_plane_index(plane)))
#define obj_to_crtc(x) container_of(x, struct drm_crtc, base)
#define obj_to_connector(x) container_of(x, struct drm_connector, base)
#define obj_to_encoder(x) container_of(x, struct drm_encoder, base)