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One of the last remaining objects to not have its atomic state.
This is being motivated by our attempt to support runtime bus-format
negotiation between elements of the bridge chain.
This patch just paves the road for such a feature by adding a new
drm_bridge_state object inheriting from drm_private_obj so we can
re-use some of the existing state initialization/tracking logic.
v10:
* Add changelog to the commit message
v9:
* Clarify the fact that the bridge->atomic_reset() and
{connector,plane,crtc,...}->reset() semantics are different
* Move the drm_atomic_private_obj_init() call back to
drm_bridge_attach()
* Check the presence of ->atomic_duplicate_state instead of
->atomic_reset in drm_atomic_add_encoder_bridges()
* Fix copy&paste errors in the atomic bridge state helpers doc
* Add A-b/R-b tags
v8:
* Move bridge state helpers out of the CONFIG_DEBUGFS section
v7:
* Move helpers, struct-defs, ... to atomic helper files to avoid the
drm -> drm_kms_helper -> drm circular dep
* Stop providing default implementation for atomic state reset,
duplicate and destroy hooks (has to do with the helper/core split)
* Drop all R-b/T-b as helpers have now be moved to other places
v6:
* Made helpers private, removed doc and moved them to satisfy dependencies
* Renamed helpers to _default_
v5:
* Re-introduced the helpers from v4
v4:
* Fix the doc
* Kill default helpers (inlined)
* Fix drm_atomic_get_bridge_state() to check for an ERR_PTR()
* Add Neil's R-b
v3:
* No changes
v2:
* Use drm_for_each_bridge_in_chain()
* Rename helpers to be more consistent with the rest of the DRM API
* Improve/fix the doc
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20200128135514.108171-2-boris.brezillon@collabora.com
96 lines
4.2 KiB
C
96 lines
4.2 KiB
C
/*
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* Copyright (C) 2018 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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#include <linux/types.h>
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struct drm_bridge;
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struct drm_bridge_state;
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struct drm_crtc;
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struct drm_crtc_state;
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struct drm_plane;
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struct drm_plane_state;
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struct drm_connector;
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struct drm_connector_state;
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struct drm_private_obj;
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struct drm_private_state;
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struct drm_modeset_acquire_ctx;
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struct drm_device;
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void __drm_atomic_helper_crtc_state_reset(struct drm_crtc_state *state,
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struct drm_crtc *crtc);
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void __drm_atomic_helper_crtc_reset(struct drm_crtc *crtc,
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struct drm_crtc_state *state);
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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_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_state_reset(struct drm_plane_state *state,
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struct drm_plane *plane);
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void __drm_atomic_helper_plane_reset(struct drm_plane *plane,
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struct drm_plane_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_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_state_reset(struct drm_connector_state *conn_state,
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struct drm_connector *connector);
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void __drm_atomic_helper_connector_reset(struct drm_connector *connector,
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struct drm_connector_state *conn_state);
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void drm_atomic_helper_connector_reset(struct drm_connector *connector);
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void drm_atomic_helper_connector_tv_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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void
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__drm_atomic_helper_connector_destroy_state(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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void __drm_atomic_helper_private_obj_duplicate_state(struct drm_private_obj *obj,
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struct drm_private_state *state);
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void __drm_atomic_helper_bridge_duplicate_state(struct drm_bridge *bridge,
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struct drm_bridge_state *state);
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struct drm_bridge_state *
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drm_atomic_helper_bridge_duplicate_state(struct drm_bridge *bridge);
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void drm_atomic_helper_bridge_destroy_state(struct drm_bridge *bridge,
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struct drm_bridge_state *state);
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void __drm_atomic_helper_bridge_reset(struct drm_bridge *bridge,
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struct drm_bridge_state *state);
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struct drm_bridge_state *
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drm_atomic_helper_bridge_reset(struct drm_bridge *bridge);
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