226 lines
8.3 KiB
C
226 lines
8.3 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_H_
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#define DRM_ATOMIC_H_
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#include <drm/drm_crtc.h>
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void drm_crtc_commit_put(struct drm_crtc_commit *commit);
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static inline void drm_crtc_commit_get(struct drm_crtc_commit *commit)
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{
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kref_get(&commit->ref);
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}
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struct drm_atomic_state * __must_check
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drm_atomic_state_alloc(struct drm_device *dev);
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void drm_atomic_state_clear(struct drm_atomic_state *state);
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void drm_atomic_state_free(struct drm_atomic_state *state);
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int __must_check
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drm_atomic_state_init(struct drm_device *dev, struct drm_atomic_state *state);
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void drm_atomic_state_default_clear(struct drm_atomic_state *state);
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void drm_atomic_state_default_release(struct drm_atomic_state *state);
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struct drm_crtc_state * __must_check
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drm_atomic_get_crtc_state(struct drm_atomic_state *state,
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struct drm_crtc *crtc);
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int drm_atomic_crtc_set_property(struct drm_crtc *crtc,
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struct drm_crtc_state *state, struct drm_property *property,
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uint64_t val);
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struct drm_plane_state * __must_check
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drm_atomic_get_plane_state(struct drm_atomic_state *state,
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struct drm_plane *plane);
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int drm_atomic_plane_set_property(struct drm_plane *plane,
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struct drm_plane_state *state, struct drm_property *property,
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uint64_t val);
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struct drm_connector_state * __must_check
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drm_atomic_get_connector_state(struct drm_atomic_state *state,
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struct drm_connector *connector);
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int drm_atomic_connector_set_property(struct drm_connector *connector,
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struct drm_connector_state *state, struct drm_property *property,
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uint64_t val);
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/**
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* drm_atomic_get_existing_crtc_state - get crtc state, if it exists
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* @state: global atomic state object
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* @crtc: crtc to grab
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*
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* This function returns the crtc state for the given crtc, or NULL
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* if the crtc is not part of the global atomic state.
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*/
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static inline struct drm_crtc_state *
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drm_atomic_get_existing_crtc_state(struct drm_atomic_state *state,
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struct drm_crtc *crtc)
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{
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return state->crtcs[drm_crtc_index(crtc)].state;
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}
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/**
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* drm_atomic_get_existing_plane_state - get plane state, if it exists
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* @state: global atomic state object
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* @plane: plane to grab
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*
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* This function returns the plane state for the given plane, or NULL
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* if the plane is not part of the global atomic state.
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*/
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static inline struct drm_plane_state *
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drm_atomic_get_existing_plane_state(struct drm_atomic_state *state,
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struct drm_plane *plane)
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{
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return state->planes[drm_plane_index(plane)].state;
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}
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/**
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* drm_atomic_get_existing_connector_state - get connector state, if it exists
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* @state: global atomic state object
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* @connector: connector to grab
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*
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* This function returns the connector state for the given connector,
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* or NULL if the connector is not part of the global atomic state.
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*/
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static inline struct drm_connector_state *
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drm_atomic_get_existing_connector_state(struct drm_atomic_state *state,
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struct drm_connector *connector)
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{
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int index = drm_connector_index(connector);
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if (index >= state->num_connector)
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return NULL;
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return state->connectors[index].state;
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}
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/**
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* __drm_atomic_get_current_plane_state - get current plane state
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* @state: global atomic state object
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* @plane: plane to grab
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*
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* This function returns the plane state for the given plane, either from
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* @state, or if the plane isn't part of the atomic state update, from @plane.
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* This is useful in atomic check callbacks, when drivers need to peek at, but
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* not change, state of other planes, since it avoids threading an error code
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* back up the call chain.
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*
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* WARNING:
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*
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* Note that this function is in general unsafe since it doesn't check for the
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* required locking for access state structures. Drivers must ensure that it is
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* safe to access the returned state structure through other means. One common
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* example is when planes are fixed to a single CRTC, and the driver knows that
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* the CRTC lock is held already. In that case holding the CRTC lock gives a
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* read-lock on all planes connected to that CRTC. But if planes can be
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* reassigned things get more tricky. In that case it's better to use
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* drm_atomic_get_plane_state and wire up full error handling.
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*
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* Returns:
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*
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* Read-only pointer to the current plane state.
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*/
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static inline const struct drm_plane_state *
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__drm_atomic_get_current_plane_state(struct drm_atomic_state *state,
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struct drm_plane *plane)
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{
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if (state->planes[drm_plane_index(plane)].state)
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return state->planes[drm_plane_index(plane)].state;
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return plane->state;
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}
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int __must_check
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drm_atomic_set_mode_for_crtc(struct drm_crtc_state *state,
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struct drm_display_mode *mode);
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int __must_check
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drm_atomic_set_mode_prop_for_crtc(struct drm_crtc_state *state,
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struct drm_property_blob *blob);
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int __must_check
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drm_atomic_set_crtc_for_plane(struct drm_plane_state *plane_state,
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struct drm_crtc *crtc);
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void drm_atomic_set_fb_for_plane(struct drm_plane_state *plane_state,
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struct drm_framebuffer *fb);
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int __must_check
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drm_atomic_set_crtc_for_connector(struct drm_connector_state *conn_state,
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struct drm_crtc *crtc);
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int __must_check
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drm_atomic_add_affected_connectors(struct drm_atomic_state *state,
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struct drm_crtc *crtc);
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int __must_check
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drm_atomic_add_affected_planes(struct drm_atomic_state *state,
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struct drm_crtc *crtc);
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void drm_atomic_legacy_backoff(struct drm_atomic_state *state);
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void
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drm_atomic_clean_old_fb(struct drm_device *dev, unsigned plane_mask, int ret);
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int __must_check drm_atomic_check_only(struct drm_atomic_state *state);
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int __must_check drm_atomic_commit(struct drm_atomic_state *state);
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int __must_check drm_atomic_nonblocking_commit(struct drm_atomic_state *state);
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#define for_each_connector_in_state(__state, connector, connector_state, __i) \
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for ((__i) = 0; \
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(__i) < (__state)->num_connector && \
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((connector) = (__state)->connectors[__i].ptr, \
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(connector_state) = (__state)->connectors[__i].state, 1); \
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(__i)++) \
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for_each_if (connector)
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#define for_each_crtc_in_state(__state, crtc, crtc_state, __i) \
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for ((__i) = 0; \
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(__i) < (__state)->dev->mode_config.num_crtc && \
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((crtc) = (__state)->crtcs[__i].ptr, \
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(crtc_state) = (__state)->crtcs[__i].state, 1); \
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(__i)++) \
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for_each_if (crtc_state)
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#define for_each_plane_in_state(__state, plane, plane_state, __i) \
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for ((__i) = 0; \
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(__i) < (__state)->dev->mode_config.num_total_plane && \
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((plane) = (__state)->planes[__i].ptr, \
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(plane_state) = (__state)->planes[__i].state, 1); \
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(__i)++) \
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for_each_if (plane_state)
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/**
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* drm_atomic_crtc_needs_modeset - compute combined modeset need
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* @state: &drm_crtc_state for the CRTC
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*
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* To give drivers flexibility struct &drm_crtc_state has 3 booleans to track
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* whether the state CRTC changed enough to need a full modeset cycle:
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* connectors_changed, mode_changed and active_change. This helper simply
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* combines these three to compute the overall need for a modeset for @state.
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*/
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static inline bool
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drm_atomic_crtc_needs_modeset(struct drm_crtc_state *state)
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{
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return state->mode_changed || state->active_changed ||
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state->connectors_changed;
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}
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#endif /* DRM_ATOMIC_H_ */
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