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b9fc5e01d1
Add an atomic helper to implement dirtyfb support. This is needed to support DSI command-mode panels with x11 userspace (ie. when we can't rely on pageflips to trigger a flush to the panel). v2: Modified the helper to use plane fb_damage_clips property and removed plane_state::dirty flag. v3: - Use uapi drm_mode_rect. - Support annotate flags. v4: Correct kernel doc. Signed-off-by: Rob Clark <robdclark@gmail.com> Signed-off-by: Deepak Rawat <drawat@vmware.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
100 lines
3.8 KiB
C
100 lines
3.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 OR MIT */
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/**************************************************************************
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*
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* Copyright (c) 2018 VMware, Inc., Palo Alto, CA., USA
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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* USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors:
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* Deepak Rawat <drawat@vmware.com>
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*
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**************************************************************************/
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#ifndef DRM_DAMAGE_HELPER_H_
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#define DRM_DAMAGE_HELPER_H_
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#include <drm/drm_atomic_helper.h>
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/**
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* drm_atomic_for_each_plane_damage - Iterator macro for plane damage.
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* @iter: The iterator to advance.
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* @rect: Return a rectangle in fb coordinate clipped to plane src.
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*
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* Note that if the first call to iterator macro return false then no need to do
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* plane update. Iterator will return full plane src when damage is not passed
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* by user-space.
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*/
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#define drm_atomic_for_each_plane_damage(iter, rect) \
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while (drm_atomic_helper_damage_iter_next(iter, rect))
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/**
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* struct drm_atomic_helper_damage_iter - Closure structure for damage iterator.
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*
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* This structure tracks state needed to walk the list of plane damage clips.
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*/
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struct drm_atomic_helper_damage_iter {
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/* private: Plane src in whole number. */
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struct drm_rect plane_src;
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/* private: Rectangles in plane damage blob. */
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const struct drm_rect *clips;
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/* private: Number of rectangles in plane damage blob. */
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uint32_t num_clips;
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/* private: Current clip iterator is advancing on. */
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uint32_t curr_clip;
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/* private: Whether need full plane update. */
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bool full_update;
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};
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void drm_plane_enable_fb_damage_clips(struct drm_plane *plane);
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void drm_atomic_helper_check_plane_damage(struct drm_atomic_state *state,
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struct drm_plane_state *plane_state);
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int drm_atomic_helper_dirtyfb(struct drm_framebuffer *fb,
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struct drm_file *file_priv, unsigned int flags,
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unsigned int color, struct drm_clip_rect *clips,
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unsigned int num_clips);
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void
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drm_atomic_helper_damage_iter_init(struct drm_atomic_helper_damage_iter *iter,
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const struct drm_plane_state *old_state,
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const struct drm_plane_state *new_state);
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bool
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drm_atomic_helper_damage_iter_next(struct drm_atomic_helper_damage_iter *iter,
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struct drm_rect *rect);
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/**
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* drm_helper_get_plane_damage_clips - Returns damage clips in &drm_rect.
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* @state: Plane state.
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*
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* Returns plane damage rectangles in internal &drm_rect. Currently &drm_rect
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* can be obtained by simply typecasting &drm_mode_rect. This is because both
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* are signed 32 and during drm_atomic_check_only() it is verified that damage
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* clips are inside fb.
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*
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* Return: Clips in plane fb_damage_clips blob property.
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*/
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static inline struct drm_rect *
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drm_helper_get_plane_damage_clips(const struct drm_plane_state *state)
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{
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return (struct drm_rect *)drm_plane_get_damage_clips(state);
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}
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#endif
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