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397fd77c04
This function can be used to duplicate an atomic state object. This is useful for example to implement suspend/resume, where the state before suspend can be saved and restored upon resume. v2: move locking to caller, be more explicit about prerequisites v3: explicitly pass lock acquisition context, improve kerneldoc Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
193 lines
7.8 KiB
C
193 lines
7.8 KiB
C
/*
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* Copyright (C) 2014 Red Hat
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* Copyright (C) 2014 Intel Corp.
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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 "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions 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 NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors:
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* Rob Clark <robdclark@gmail.com>
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* Daniel Vetter <daniel.vetter@ffwll.ch>
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*/
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#ifndef DRM_ATOMIC_HELPER_H_
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#define DRM_ATOMIC_HELPER_H_
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#include <drm/drm_crtc.h>
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int drm_atomic_helper_check_modeset(struct drm_device *dev,
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struct drm_atomic_state *state);
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int drm_atomic_helper_check_planes(struct drm_device *dev,
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struct drm_atomic_state *state);
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int drm_atomic_helper_check(struct drm_device *dev,
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struct drm_atomic_state *state);
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int drm_atomic_helper_commit(struct drm_device *dev,
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struct drm_atomic_state *state,
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bool async);
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void drm_atomic_helper_wait_for_vblanks(struct drm_device *dev,
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struct drm_atomic_state *old_state);
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void
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drm_atomic_helper_update_legacy_modeset_state(struct drm_device *dev,
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struct drm_atomic_state *old_state);
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void drm_atomic_helper_commit_modeset_disables(struct drm_device *dev,
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struct drm_atomic_state *state);
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void drm_atomic_helper_commit_modeset_enables(struct drm_device *dev,
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struct drm_atomic_state *old_state);
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int drm_atomic_helper_prepare_planes(struct drm_device *dev,
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struct drm_atomic_state *state);
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void drm_atomic_helper_commit_planes(struct drm_device *dev,
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struct drm_atomic_state *state,
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bool active_only);
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void drm_atomic_helper_cleanup_planes(struct drm_device *dev,
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struct drm_atomic_state *old_state);
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void drm_atomic_helper_commit_planes_on_crtc(struct drm_crtc_state *old_crtc_state);
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void drm_atomic_helper_swap_state(struct drm_device *dev,
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struct drm_atomic_state *state);
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/* implementations for legacy interfaces */
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int drm_atomic_helper_update_plane(struct drm_plane *plane,
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struct drm_crtc *crtc,
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struct drm_framebuffer *fb,
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int crtc_x, int crtc_y,
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unsigned int crtc_w, unsigned int crtc_h,
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uint32_t src_x, uint32_t src_y,
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uint32_t src_w, uint32_t src_h);
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int drm_atomic_helper_disable_plane(struct drm_plane *plane);
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int drm_atomic_helper_set_config(struct drm_mode_set *set);
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int drm_atomic_helper_crtc_set_property(struct drm_crtc *crtc,
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struct drm_property *property,
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uint64_t val);
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int drm_atomic_helper_plane_set_property(struct drm_plane *plane,
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struct drm_property *property,
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uint64_t val);
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int drm_atomic_helper_connector_set_property(struct drm_connector *connector,
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struct drm_property *property,
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uint64_t val);
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int drm_atomic_helper_page_flip(struct drm_crtc *crtc,
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struct drm_framebuffer *fb,
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struct drm_pending_vblank_event *event,
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uint32_t flags);
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int drm_atomic_helper_connector_dpms(struct drm_connector *connector,
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int mode);
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/* default implementations for state handling */
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void drm_atomic_helper_crtc_reset(struct drm_crtc *crtc);
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void __drm_atomic_helper_crtc_duplicate_state(struct drm_crtc *crtc,
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struct drm_crtc_state *state);
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struct drm_crtc_state *
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drm_atomic_helper_crtc_duplicate_state(struct drm_crtc *crtc);
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void __drm_atomic_helper_crtc_destroy_state(struct drm_crtc *crtc,
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struct drm_crtc_state *state);
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void drm_atomic_helper_crtc_destroy_state(struct drm_crtc *crtc,
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struct drm_crtc_state *state);
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void drm_atomic_helper_plane_reset(struct drm_plane *plane);
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void __drm_atomic_helper_plane_duplicate_state(struct drm_plane *plane,
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struct drm_plane_state *state);
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struct drm_plane_state *
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drm_atomic_helper_plane_duplicate_state(struct drm_plane *plane);
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void __drm_atomic_helper_plane_destroy_state(struct drm_plane *plane,
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struct drm_plane_state *state);
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void drm_atomic_helper_plane_destroy_state(struct drm_plane *plane,
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struct drm_plane_state *state);
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void drm_atomic_helper_connector_reset(struct drm_connector *connector);
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void
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__drm_atomic_helper_connector_duplicate_state(struct drm_connector *connector,
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struct drm_connector_state *state);
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struct drm_connector_state *
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drm_atomic_helper_connector_duplicate_state(struct drm_connector *connector);
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struct drm_atomic_state *
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drm_atomic_helper_duplicate_state(struct drm_device *dev,
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struct drm_modeset_acquire_ctx *ctx);
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void
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__drm_atomic_helper_connector_destroy_state(struct drm_connector *connector,
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struct drm_connector_state *state);
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void drm_atomic_helper_connector_destroy_state(struct drm_connector *connector,
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struct drm_connector_state *state);
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/**
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* drm_atomic_crtc_for_each_plane - iterate over planes currently attached to CRTC
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* @plane: the loop cursor
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* @crtc: the crtc whose planes are iterated
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*
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* This iterates over the current state, useful (for example) when applying
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* atomic state after it has been checked and swapped. To iterate over the
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* planes which *will* be attached (for ->atomic_check()) see
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* drm_crtc_for_each_pending_plane()
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*/
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#define drm_atomic_crtc_for_each_plane(plane, crtc) \
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drm_for_each_plane_mask(plane, (crtc)->dev, (crtc)->state->plane_mask)
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/**
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* drm_crtc_atomic_state_for_each_plane - iterate over attached planes in new state
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* @plane: the loop cursor
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* @crtc_state: the incoming crtc-state
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*
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* Similar to drm_crtc_for_each_plane(), but iterates the planes that will be
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* attached if the specified state is applied. Useful during (for example)
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* ->atomic_check() operations, to validate the incoming state
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*/
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#define drm_atomic_crtc_state_for_each_plane(plane, crtc_state) \
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drm_for_each_plane_mask(plane, (crtc_state)->state->dev, (crtc_state)->plane_mask)
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/*
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* drm_atomic_plane_disabling - check whether a plane is being disabled
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* @plane: plane object
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* @old_state: previous atomic state
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*
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* Checks the atomic state of a plane to determine whether it's being disabled
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* or not. This also WARNs if it detects an invalid state (both CRTC and FB
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* need to either both be NULL or both be non-NULL).
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*
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* RETURNS:
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* True if the plane is being disabled, false otherwise.
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*/
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static inline bool
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drm_atomic_plane_disabling(struct drm_plane *plane,
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struct drm_plane_state *old_state)
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{
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/*
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* When disabling a plane, CRTC and FB should always be NULL together.
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* Anything else should be considered a bug in the atomic core, so we
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* gently warn about it.
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*/
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WARN_ON((plane->state->crtc == NULL && plane->state->fb != NULL) ||
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(plane->state->crtc != NULL && plane->state->fb == NULL));
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/*
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* When using the transitional helpers, old_state may be NULL. If so,
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* we know nothing about the current state and have to assume that it
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* might be enabled.
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*
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* When using the atomic helpers, old_state won't be NULL. Therefore
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* this check assumes that either the driver will have reconstructed
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* the correct state in ->reset() or that the driver will have taken
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* appropriate measures to disable all planes.
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*/
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return (!old_state || old_state->crtc) && !plane->state->crtc;
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}
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#endif /* DRM_ATOMIC_HELPER_H_ */
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