From 255f6fe736f4ed78e0f0eac1d6188137db798b51 Mon Sep 17 00:00:00 2001 From: Noralf Trønnes Date: Tue, 15 Jan 2019 05:36:40 +0100 Subject: drm/damage-helper: Add drm_atomic_helper_damage_merged() Useful for drivers that only care about the combined damage. v2: Remove unnecessary clearing of damage clips Cc: Deepak Rawat Signed-off-by: Noralf Trønnes Acked-by: Daniel Vetter Reviewed-by: Sam Ravnborg Link: https://patchwork.freedesktop.org/patch/msgid/20190115043643.2364-3-noralf@tronnes.org --- drivers/gpu/drm/drm_damage_helper.c | 41 +++++++++++++++++++++++++++++++++++++ include/drm/drm_damage_helper.h | 3 +++ 2 files changed, 44 insertions(+) diff --git a/drivers/gpu/drm/drm_damage_helper.c b/drivers/gpu/drm/drm_damage_helper.c index 31032407254d..e16aa5ae00b4 100644 --- a/drivers/gpu/drm/drm_damage_helper.c +++ b/drivers/gpu/drm/drm_damage_helper.c @@ -333,3 +333,44 @@ drm_atomic_helper_damage_iter_next(struct drm_atomic_helper_damage_iter *iter, return ret; } EXPORT_SYMBOL(drm_atomic_helper_damage_iter_next); + +/** + * drm_atomic_helper_damage_merged - Merged plane damage + * @old_state: Old plane state for validation. + * @state: Plane state from which to iterate the damage clips. + * @rect: Returns the merged damage rectangle + * + * This function merges any valid plane damage clips into one rectangle and + * returns it in @rect. + * + * For details see: drm_atomic_helper_damage_iter_init() and + * drm_atomic_helper_damage_iter_next(). + * + * Returns: + * True if there is valid plane damage otherwise false. + */ +bool drm_atomic_helper_damage_merged(const struct drm_plane_state *old_state, + struct drm_plane_state *state, + struct drm_rect *rect) +{ + struct drm_atomic_helper_damage_iter iter; + struct drm_rect clip; + bool valid = false; + + rect->x1 = INT_MAX; + rect->y1 = INT_MAX; + rect->x2 = 0; + rect->y2 = 0; + + drm_atomic_helper_damage_iter_init(&iter, old_state, state); + drm_atomic_for_each_plane_damage(&iter, &clip) { + rect->x1 = min(rect->x1, clip.x1); + rect->y1 = min(rect->y1, clip.y1); + rect->x2 = max(rect->x2, clip.x2); + rect->y2 = max(rect->y2, clip.y2); + valid = true; + } + + return valid; +} +EXPORT_SYMBOL(drm_atomic_helper_damage_merged); diff --git a/include/drm/drm_damage_helper.h b/include/drm/drm_damage_helper.h index 4487660b26b8..40c34a5bf149 100644 --- a/include/drm/drm_damage_helper.h +++ b/include/drm/drm_damage_helper.h @@ -78,6 +78,9 @@ drm_atomic_helper_damage_iter_init(struct drm_atomic_helper_damage_iter *iter, bool drm_atomic_helper_damage_iter_next(struct drm_atomic_helper_damage_iter *iter, struct drm_rect *rect); +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. -- cgit v1.2.3