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drm/plane: Clarify our expectations for src/dst rectangles 

The rectangles are usually clipped, but it can be useful to have
them unclipped, for example for cursor planes.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
[mlankhorst: Change cursor plane to hardware performing clipping. (Ville)
             Fix dst description that went missing.]
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191010112918.15724-1-maarten.lankhorst@linux.intel.com
This commit is contained in:
Maarten Lankhorst 2019-10-10 13:19:13 +02:00
parent 76d6d3df52
commit fec748740c
1 changed files with 20 additions and 2 deletions
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22
include/drm/drm_plane.h
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@ -184,8 +184,26 @@ struct drm_plane_state {
*/
struct drm_property_blob *fb_damage_clips;
/** @src: clipped source coordinates of the plane (in 16.16) */
/** @dst: clipped destination coordinates of the plane */
/**
* @src:
*
* source coordinates of the plane (in 16.16).
*
* When using drm_atomic_helper_check_plane_state(),
* the coordinates are clipped, but the driver may choose
* to use unclipped coordinates instead when the hardware
* performs the clipping automatically.
*/
/**
* @dst:
*
* clipped destination coordinates of the plane.
*
* When using drm_atomic_helper_check_plane_state(),
* the coordinates are clipped, but the driver may choose
* to use unclipped coordinates instead when the hardware
* performs the clipping automatically.
*/
struct drm_rect src, dst;
/**