It's not used. Drivers should instead use the helpers anyway.
Currently both vbox and i915 hand-roll this and it's not the greatest.
vbox looks buggy, and i915 does a bit much that helpers would take
care of I think.
Also improve the kerneldocs while we're at it.
Reviewed-by: José Roberto de Souza <jose.so...@intel.com>
Cc: Ville Syrjälä <ville.syrj...@linux.intel.com>
Cc: Gwan-gyeong Mun <gwan-gyeong....@intel.com>
Cc: José Roberto de Souza <jose.so...@intel.com>
Cc: Hans de Goede <hdego...@redhat.com>
Signed-off-by: Daniel Vetter <daniel.vet...@intel.com>
Cc: Maarten Lankhorst <maarten.lankho...@linux.intel.com>
Cc: Maxime Ripard <mrip...@kernel.org>
Cc: Thomas Zimmermann <tzimmerm...@suse.de>
Cc: David Airlie <airl...@linux.ie>
Cc: Daniel Vetter <dan...@ffwll.ch>
---
drivers/gpu/drm/drm_damage_helper.c | 2 +-
include/drm/drm_damage_helper.h | 17 -----------------
include/drm/drm_plane.h | 10 +++++++---
include/drm/drm_rect.h | 3 +++
4 files changed, 11 insertions(+), 21 deletions(-)
diff --git a/drivers/gpu/drm/drm_damage_helper.c
b/drivers/gpu/drm/drm_damage_helper.c
index 3a4126dc2520..eb69b7123af5 100644
--- a/drivers/gpu/drm/drm_damage_helper.c
+++ b/drivers/gpu/drm/drm_damage_helper.c
@@ -282,7 +282,7 @@ drm_atomic_helper_damage_iter_init(struct
drm_atomic_helper_damage_iter *iter,
if (!state || !state->crtc || !state->fb || !state->visible)
return;
- iter->clips = drm_helper_get_plane_damage_clips(state);
+ iter->clips = (struct drm_rect *)drm_plane_get_damage_clips(state);
iter->num_clips = drm_plane_get_damage_clips_count(state);
/* Round down for x1/y1 and round up for x2/y2 to catch all pixels */
diff --git a/include/drm/drm_damage_helper.h b/include/drm/drm_damage_helper.h
index 40c34a5bf149..1ae8bce6a5ce 100644
--- a/include/drm/drm_damage_helper.h
+++ b/include/drm/drm_damage_helper.h
@@ -82,21 +82,4 @@ bool drm_atomic_helper_damage_merged(const struct
drm_plane_state *old_state,
struct drm_plane_state *state,
struct drm_rect *rect);
-/**
- * drm_helper_get_plane_damage_clips - Returns damage clips in &drm_rect.
- * @state: Plane state.
- *
- * Returns plane damage rectangles in internal &drm_rect. Currently &drm_rect
- * can be obtained by simply typecasting &drm_mode_rect. This is because both
- * are signed 32 and during drm_atomic_check_only() it is verified that damage
- * clips are inside fb.
- *
- * Return: Clips in plane fb_damage_clips blob property.
- */
-static inline struct drm_rect *
-drm_helper_get_plane_damage_clips(const struct drm_plane_state *state)
-{
- return (struct drm_rect *)drm_plane_get_damage_clips(state);
-}
-
#endif
diff --git a/include/drm/drm_plane.h b/include/drm/drm_plane.h
index 1294610e84f4..7f7d5148310c 100644
--- a/include/drm/drm_plane.h
+++ b/include/drm/drm_plane.h
@@ -186,6 +186,9 @@ struct drm_plane_state {
* since last plane update) as an array of &drm_mode_rect in framebuffer
* coodinates of the attached framebuffer. Note that unlike plane src,
* damage clips are not in 16.16 fixed point.
+ *
+ * See drm_plane_get_damage_clips() and
+ * drm_plane_get_damage_clips_count() for accessing these.
*/
struct drm_property_blob *fb_damage_clips;
@@ -914,9 +917,10 @@ drm_plane_get_damage_clips_count(const struct
drm_plane_state *state)
* drm_plane_get_damage_clips - Returns damage clips.
* @state: Plane state.
*
- * Note that this function returns uapi type &drm_mode_rect. Drivers might
- * instead be interested in internal &drm_rect which can be obtained by calling
- * drm_helper_get_plane_damage_clips().
+ * Note that this function returns uapi type &drm_mode_rect. Drivers might want
+ * to use the helper functions drm_atomic_helper_damage_iter_init() and
+ * drm_atomic_helper_damage_iter_next() or drm_atomic_helper_damage_merged() if
+ * the driver can only handle a single damage region at most.
*
* Return: Damage clips in plane fb_damage_clips blob property.
*/
diff --git a/include/drm/drm_rect.h b/include/drm/drm_rect.h
index 39f2deee709c..6f6e19bd4dac 100644
--- a/include/drm/drm_rect.h
+++ b/include/drm/drm_rect.h
@@ -39,6 +39,9 @@
* @x2: horizontal ending coordinate (exclusive)
* @y1: vertical starting coordinate (inclusive)
* @y2: vertical ending coordinate (exclusive)
+ *
+ * Note that this must match the layout of struct drm_mode_rect or the damage
+ * helpers like drm_atomic_helper_damage_iter_init() break.
*/
struct drm_rect {
int x1, y1, x2, y2;
--
2.32.0
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