cregit-Linux how code gets into the kernel

Release 4.14 include/drm/drm_atomic.h

Directory: include/drm
/*
 * Copyright (C) 2014 Red Hat
 * Copyright (C) 2014 Intel Corp.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 * Authors:
 * Rob Clark <robdclark@gmail.com>
 * Daniel Vetter <daniel.vetter@ffwll.ch>
 */

#ifndef DRM_ATOMIC_H_

#define DRM_ATOMIC_H_

#include <drm/drm_crtc.h>

/**
 * struct drm_crtc_commit - track modeset commits on a CRTC
 *
 * This structure is used to track pending modeset changes and atomic commit on
 * a per-CRTC basis. Since updating the list should never block this structure
 * is reference counted to allow waiters to safely wait on an event to complete,
 * without holding any locks.
 *
 * It has 3 different events in total to allow a fine-grained synchronization
 * between outstanding updates::
 *
 *      atomic commit thread                    hardware
 *
 *      write new state into hardware   ---->   ...
 *      signal hw_done
 *                                              switch to new state on next
 *      ...                                     v/hblank
 *
 *      wait for buffers to show up             ...
 *
 *      ...                                     send completion irq
 *                                              irq handler signals flip_done
 *      cleanup old buffers
 *
 *      signal cleanup_done
 *
 *      wait for flip_done              <----
 *      clean up atomic state
 *
 * The important bit to know is that cleanup_done is the terminal event, but the
 * ordering between flip_done and hw_done is entirely up to the specific driver
 * and modeset state change.
 *
 * For an implementation of how to use this look at
 * drm_atomic_helper_setup_commit() from the atomic helper library.
 */

struct drm_crtc_commit {
	/**
         * @crtc:
         *
         * DRM CRTC for this commit.
         */
	
struct drm_crtc *crtc;

	/**
         * @ref:
         *
         * Reference count for this structure. Needed to allow blocking on
         * completions without the risk of the completion disappearing
         * meanwhile.
         */
	
struct kref ref;

	/**
         * @flip_done:
         *
         * Will be signaled when the hardware has flipped to the new set of
         * buffers. Signals at the same time as when the drm event for this
         * commit is sent to userspace, or when an out-fence is singalled. Note
         * that for most hardware, in most cases this happens after @hw_done is
         * signalled.
         */
	
struct completion flip_done;

	/**
         * @hw_done:
         *
         * Will be signalled when all hw register changes for this commit have
         * been written out. Especially when disabling a pipe this can be much
         * later than than @flip_done, since that can signal already when the
         * screen goes black, whereas to fully shut down a pipe more register
         * I/O is required.
         *
         * Note that this does not need to include separately reference-counted
         * resources like backing storage buffer pinning, or runtime pm
         * management.
         */
	
struct completion hw_done;

	/**
         * @cleanup_done:
         *
         * Will be signalled after old buffers have been cleaned up by calling
         * drm_atomic_helper_cleanup_planes(). Since this can only happen after
         * a vblank wait completed it might be a bit later. This completion is
         * useful to throttle updates and avoid hardware updates getting ahead
         * of the buffer cleanup too much.
         */
	
struct completion cleanup_done;

	/**
         * @commit_entry:
         *
         * Entry on the per-CRTC &drm_crtc.commit_list. Protected by
         * $drm_crtc.commit_lock.
         */
	
struct list_head commit_entry;

	/**
         * @event:
         *
         * &drm_pending_vblank_event pointer to clean up private events.
         */
	
struct drm_pending_vblank_event *event;
};


struct __drm_planes_state {
	
struct drm_plane *ptr;
	


struct drm_plane_state *state, *old_state, *new_state;
};


struct __drm_crtcs_state {
	
struct drm_crtc *ptr;
	


struct drm_crtc_state *state, *old_state, *new_state;
	
struct drm_crtc_commit *commit;
	
s32 __user *out_fence_ptr;
	
unsigned last_vblank_count;
};


struct __drm_connnectors_state {
	
struct drm_connector *ptr;
	


struct drm_connector_state *state, *old_state, *new_state;
};

struct drm_private_obj;
struct drm_private_state;

/**
 * struct drm_private_state_funcs - atomic state functions for private objects
 *
 * These hooks are used by atomic helpers to create, swap and destroy states of
 * private objects. The structure itself is used as a vtable to identify the
 * associated private object type. Each private object type that needs to be
 * added to the atomic states is expected to have an implementation of these
 * hooks and pass a pointer to it's drm_private_state_funcs struct to
 * drm_atomic_get_private_obj_state().
 */

struct drm_private_state_funcs {
	/**
         * @atomic_duplicate_state:
         *
         * Duplicate the current state of the private object and return it. It
         * is an error to call this before obj->state has been initialized.
         *
         * RETURNS:
         *
         * Duplicated atomic state or NULL when obj->state is not
         * initialized or allocation failed.
         */
	
struct drm_private_state *(*atomic_duplicate_state)(struct drm_private_obj *obj);

	/**
         * @atomic_destroy_state:
         *
         * Frees the private object state created with @atomic_duplicate_state.
         */
	
void (*atomic_destroy_state)(struct drm_private_obj *obj,
				     struct drm_private_state *state);
};


struct drm_private_obj {
	
struct drm_private_state *state;

	
const struct drm_private_state_funcs *funcs;
};


struct drm_private_state {
	
struct drm_atomic_state *state;
};


struct __drm_private_objs_state {
	
struct drm_private_obj *ptr;
	


struct drm_private_state *state, *old_state, *new_state;
};

/**
 * struct drm_atomic_state - the global state object for atomic updates
 * @ref: count of all references to this state (will not be freed until zero)
 * @dev: parent DRM device
 * @allow_modeset: allow full modeset
 * @legacy_cursor_update: hint to enforce legacy cursor IOCTL semantics
 * @async_update: hint for asynchronous plane update
 * @planes: pointer to array of structures with per-plane data
 * @crtcs: pointer to array of CRTC pointers
 * @num_connector: size of the @connectors and @connector_states arrays
 * @connectors: pointer to array of structures with per-connector data
 * @num_private_objs: size of the @private_objs array
 * @private_objs: pointer to array of private object pointers
 * @acquire_ctx: acquire context for this atomic modeset state update
 */

struct drm_atomic_state {
	
struct kref ref;

	
struct drm_device *dev;
	
bool allow_modeset : 1;
	
bool legacy_cursor_update : 1;
	
bool async_update : 1;
	
struct __drm_planes_state *planes;
	
struct __drm_crtcs_state *crtcs;
	
int num_connector;
	
struct __drm_connnectors_state *connectors;
	
int num_private_objs;
	
struct __drm_private_objs_state *private_objs;

	
struct drm_modeset_acquire_ctx *acquire_ctx;

	/**
         * @commit_work:
         *
         * Work item which can be used by the driver or helpers to execute the
         * commit without blocking.
         */
	
struct work_struct commit_work;
};

void __drm_crtc_commit_free(struct kref *kref);

/**
 * drm_crtc_commit_get - acquire a reference to the CRTC commit
 * @commit: CRTC commit
 *
 * Increases the reference of @commit.
 */

static inline void drm_crtc_commit_get(struct drm_crtc_commit *commit) { kref_get(&commit->ref); }

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/** * drm_crtc_commit_put - release a reference to the CRTC commmit * @commit: CRTC commit * * This releases a reference to @commit which is freed after removing the * final reference. No locking required and callable from any context. */
static inline void drm_crtc_commit_put(struct drm_crtc_commit *commit) { kref_put(&commit->ref, __drm_crtc_commit_free); }

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struct drm_atomic_state * __must_check drm_atomic_state_alloc(struct drm_device *dev); void drm_atomic_state_clear(struct drm_atomic_state *state); /** * drm_atomic_state_get - acquire a reference to the atomic state * @state: The atomic state * * Returns a new reference to the @state */
static inline struct drm_atomic_state * drm_atomic_state_get(struct drm_atomic_state *state) { kref_get(&state->ref); return state; }

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void __drm_atomic_state_free(struct kref *ref); /** * drm_atomic_state_put - release a reference to the atomic state * @state: The atomic state * * This releases a reference to @state which is freed after removing the * final reference. No locking required and callable from any context. */
static inline void drm_atomic_state_put(struct drm_atomic_state *state) { kref_put(&state->ref, __drm_atomic_state_free); }

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int __must_check drm_atomic_state_init(struct drm_device *dev, struct drm_atomic_state *state); void drm_atomic_state_default_clear(struct drm_atomic_state *state); void drm_atomic_state_default_release(struct drm_atomic_state *state); struct drm_crtc_state * __must_check drm_atomic_get_crtc_state(struct drm_atomic_state *state, struct drm_crtc *crtc); int drm_atomic_crtc_set_property(struct drm_crtc *crtc, struct drm_crtc_state *state, struct drm_property *property, uint64_t val); struct drm_plane_state * __must_check drm_atomic_get_plane_state(struct drm_atomic_state *state, struct drm_plane *plane); struct drm_connector_state * __must_check drm_atomic_get_connector_state(struct drm_atomic_state *state, struct drm_connector *connector); void drm_atomic_private_obj_init(struct drm_private_obj *obj, struct drm_private_state *state, const struct drm_private_state_funcs *funcs); void drm_atomic_private_obj_fini(struct drm_private_obj *obj); struct drm_private_state * __must_check drm_atomic_get_private_obj_state(struct drm_atomic_state *state, struct drm_private_obj *obj); /** * drm_atomic_get_existing_crtc_state - get crtc state, if it exists * @state: global atomic state object * @crtc: crtc to grab * * This function returns the crtc state for the given crtc, or NULL * if the crtc is not part of the global atomic state. * * This function is deprecated, @drm_atomic_get_old_crtc_state or * @drm_atomic_get_new_crtc_state should be used instead. */
static inline struct drm_crtc_state * drm_atomic_get_existing_crtc_state(struct drm_atomic_state *state, struct drm_crtc *crtc) { return state->crtcs[drm_crtc_index(crtc)].state; }

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Maarten Lankhorst2990.62%150.00%
Daniel Vetter39.38%150.00%
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/** * drm_atomic_get_old_crtc_state - get old crtc state, if it exists * @state: global atomic state object * @crtc: crtc to grab * * This function returns the old crtc state for the given crtc, or * NULL if the crtc is not part of the global atomic state. */
static inline struct drm_crtc_state * drm_atomic_get_old_crtc_state(struct drm_atomic_state *state, struct drm_crtc *crtc) { return state->crtcs[drm_crtc_index(crtc)].old_state; }

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/** * drm_atomic_get_new_crtc_state - get new crtc state, if it exists * @state: global atomic state object * @crtc: crtc to grab * * This function returns the new crtc state for the given crtc, or * NULL if the crtc is not part of the global atomic state. */
static inline struct drm_crtc_state * drm_atomic_get_new_crtc_state(struct drm_atomic_state *state, struct drm_crtc *crtc) { return state->crtcs[drm_crtc_index(crtc)].new_state; }

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/** * drm_atomic_get_existing_plane_state - get plane state, if it exists * @state: global atomic state object * @plane: plane to grab * * This function returns the plane state for the given plane, or NULL * if the plane is not part of the global atomic state. * * This function is deprecated, @drm_atomic_get_old_plane_state or * @drm_atomic_get_new_plane_state should be used instead. */
static inline struct drm_plane_state * drm_atomic_get_existing_plane_state(struct drm_atomic_state *state, struct drm_plane *plane) { return state->planes[drm_plane_index(plane)].state; }

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/** * drm_atomic_get_old_plane_state - get plane state, if it exists * @state: global atomic state object * @plane: plane to grab * * This function returns the old plane state for the given plane, or * NULL if the plane is not part of the global atomic state. */
static inline struct drm_plane_state * drm_atomic_get_old_plane_state(struct drm_atomic_state *state, struct drm_plane *plane) { return state->planes[drm_plane_index(plane)].old_state; }

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/** * drm_atomic_get_new_plane_state - get plane state, if it exists * @state: global atomic state object * @plane: plane to grab * * This function returns the new plane state for the given plane, or * NULL if the plane is not part of the global atomic state. */
static inline struct drm_plane_state * drm_atomic_get_new_plane_state(struct drm_atomic_state *state, struct drm_plane *plane) { return state->planes[drm_plane_index(plane)].new_state; }

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/** * drm_atomic_get_existing_connector_state - get connector state, if it exists * @state: global atomic state object * @connector: connector to grab * * This function returns the connector state for the given connector, * or NULL if the connector is not part of the global atomic state. * * This function is deprecated, @drm_atomic_get_old_connector_state or * @drm_atomic_get_new_connector_state should be used instead. */
static inline struct drm_connector_state * drm_atomic_get_existing_connector_state(struct drm_atomic_state *state, struct drm_connector *connector) { int index = drm_connector_index(connector); if (index >= state->num_connector) return NULL; return state->connectors[index].state; }

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/** * drm_atomic_get_old_connector_state - get connector state, if it exists * @state: global atomic state object * @connector: connector to grab * * This function returns the old connector state for the given connector, * or NULL if the connector is not part of the global atomic state. */
static inline struct drm_connector_state * drm_atomic_get_old_connector_state(struct drm_atomic_state *state, struct drm_connector *connector) { int index = drm_connector_index(connector); if (index >= state->num_connector) return NULL; return state->connectors[index].old_state; }

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/** * drm_atomic_get_new_connector_state - get connector state, if it exists * @state: global atomic state object * @connector: connector to grab * * This function returns the new connector state for the given connector, * or NULL if the connector is not part of the global atomic state. */
static inline struct drm_connector_state * drm_atomic_get_new_connector_state(struct drm_atomic_state *state, struct drm_connector *connector) { int index = drm_connector_index(connector); if (index >= state->num_connector) return NULL; return state->connectors[index].new_state; }

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/** * __drm_atomic_get_current_plane_state - get current plane state * @state: global atomic state object * @plane: plane to grab * * This function returns the plane state for the given plane, either from * @state, or if the plane isn't part of the atomic state update, from @plane. * This is useful in atomic check callbacks, when drivers need to peek at, but * not change, state of other planes, since it avoids threading an error code * back up the call chain. * * WARNING: * * Note that this function is in general unsafe since it doesn't check for the * required locking for access state structures. Drivers must ensure that it is * safe to access the returned state structure through other means. One common * example is when planes are fixed to a single CRTC, and the driver knows that * the CRTC lock is held already. In that case holding the CRTC lock gives a * read-lock on all planes connected to that CRTC. But if planes can be * reassigned things get more tricky. In that case it's better to use * drm_atomic_get_plane_state and wire up full error handling. * * Returns: * * Read-only pointer to the current plane state. */
static inline const struct drm_plane_state * __drm_atomic_get_current_plane_state(struct drm_atomic_state *state, struct drm_plane *plane) { if (state->planes[drm_plane_index(plane)].state) return state->planes[drm_plane_index(plane)].state; return plane->state; }

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int __must_check drm_atomic_set_mode_for_crtc(struct drm_crtc_state *state, const struct drm_display_mode *mode); int __must_check drm_atomic_set_mode_prop_for_crtc(struct drm_crtc_state *state, struct drm_property_blob *blob); int __must_check drm_atomic_set_crtc_for_plane(struct drm_plane_state *plane_state, struct drm_crtc *crtc); void drm_atomic_set_fb_for_plane(struct drm_plane_state *plane_state, struct drm_framebuffer *fb); void drm_atomic_set_fence_for_plane(struct drm_plane_state *plane_state, struct dma_fence *fence); int __must_check drm_atomic_set_crtc_for_connector(struct drm_connector_state *conn_state, struct drm_crtc *crtc); int __must_check drm_atomic_add_affected_connectors(struct drm_atomic_state *state, struct drm_crtc *crtc); int __must_check drm_atomic_add_affected_planes(struct drm_atomic_state *state, struct drm_crtc *crtc); void drm_atomic_clean_old_fb(struct drm_device *dev, unsigned plane_mask, int ret); int __must_check drm_atomic_check_only(struct drm_atomic_state *state); int __must_check drm_atomic_commit(struct drm_atomic_state *state); int __must_check drm_atomic_nonblocking_commit(struct drm_atomic_state *state); void drm_state_dump(struct drm_device *dev, struct drm_printer *p); /** * for_each_connector_in_state - iterate over all connectors in an atomic update * @__state: &struct drm_atomic_state pointer * @connector: &struct drm_connector iteration cursor * @connector_state: &struct drm_connector_state iteration cursor * @__i: int iteration cursor, for macro-internal use * * This iterates over all connectors in an atomic update. Note that before the * software state is committed (by calling drm_atomic_helper_swap_state(), this * points to the new state, while afterwards it points to the old state. Due to * this tricky confusion this macro is deprecated. * * FIXME: * * Replace all usage of this with one of the explicit iterators below and then * remove this macro. */ #define for_each_connector_in_state(__state, connector, connector_state, __i) \ for ((__i) = 0; \ (__i) < (__state)->num_connector && \ ((connector) = (__state)->connectors[__i].ptr, \ (connector_state) = (__state)->connectors[__i].state, 1); \ (__i)++) \ for_each_if (connector) /** * for_each_oldnew_connector_in_state - iterate over all connectors in an atomic update * @__state: &struct drm_atomic_state pointer * @connector: &struct drm_connector iteration cursor * @old_connector_state: &struct drm_connector_state iteration cursor for the * old state * @new_connector_state: &struct drm_connector_state iteration cursor for the * new state * @__i: int iteration cursor, for macro-internal use * * This iterates over all connectors in an atomic update, tracking both old and * new state. This is useful in places where the state delta needs to be * considered, for example in atomic check functions. */ #define for_each_oldnew_connector_in_state(__state, connector, old_connector_state, new_connector_state, __i) \ for ((__i) = 0; \ (__i) < (__state)->num_connector && \ ((connector) = (__state)->connectors[__i].ptr, \ (old_connector_state) = (__state)->connectors[__i].old_state, \ (new_connector_state) = (__state)->connectors[__i].new_state, 1); \ (__i)++) \ for_each_if (connector) /** * for_each_old_connector_in_state - iterate over all connectors in an atomic update * @__state: &struct drm_atomic_state pointer * @connector: &struct drm_connector iteration cursor * @old_connector_state: &struct drm_connector_state iteration cursor for the * old state * @__i: int iteration cursor, for macro-internal use * * This iterates over all connectors in an atomic update, tracking only the old * state. This is useful in disable functions, where we need the old state the * hardware is still in. */ #define for_each_old_connector_in_state(__state, connector, old_connector_state, __i) \ for ((__i) = 0; \ (__i) < (__state)->num_connector && \ ((connector) = (__state)->connectors[__i].ptr, \ (old_connector_state) = (__state)->connectors[__i].old_state, 1); \ (__i)++) \ for_each_if (connector) /** * for_each_new_connector_in_state - iterate over all connectors in an atomic update * @__state: &struct drm_atomic_state pointer * @connector: &struct drm_connector iteration cursor * @new_connector_state: &struct drm_connector_state iteration cursor for the * new state * @__i: int iteration cursor, for macro-internal use * * This iterates over all connectors in an atomic update, tracking only the new * state. This is useful in enable functions, where we need the new state the * hardware should be in when the atomic commit operation has completed. */ #define for_each_new_connector_in_state(__state, connector, new_connector_state, __i) \ for ((__i) = 0; \ (__i) < (__state)->num_connector && \ ((connector) = (__state)->connectors[__i].ptr, \ (new_connector_state) = (__state)->connectors[__i].new_state, 1); \ (__i)++) \ for_each_if (connector) /** * for_each_crtc_in_state - iterate over all connectors in an atomic update * @__state: &struct drm_atomic_state pointer * @crtc: &struct drm_crtc iteration cursor * @crtc_state: &struct drm_crtc_state iteration cursor * @__i: int iteration cursor, for macro-internal use * * This iterates over all CRTCs in an atomic update. Note that before the * software state is committed (by calling drm_atomic_helper_swap_state(), this * points to the new state, while afterwards it points to the old state. Due to * this tricky confusion this macro is deprecated. * * FIXME: * * Replace all usage of this with one of the explicit iterators below and then * remove this macro. */ #define for_each_crtc_in_state(__state, crtc, crtc_state, __i) \ for ((__i) = 0; \ (__i) < (__state)->dev->mode_config.num_crtc && \ ((crtc) = (__state)->crtcs[__i].ptr, \ (crtc_state) = (__state)->crtcs[__i].state, 1); \ (__i)++) \ for_each_if (crtc_state) /** * for_each_oldnew_crtc_in_state - iterate over all CRTCs in an atomic update * @__state: &struct drm_atomic_state pointer * @crtc: &struct drm_crtc iteration cursor * @old_crtc_state: &struct drm_crtc_state iteration cursor for the old state * @new_crtc_state: &struct drm_crtc_state iteration cursor for the new state * @__i: int iteration cursor, for macro-internal use * * This iterates over all CRTCs in an atomic update, tracking both old and * new state. This is useful in places where the state delta needs to be * considered, for example in atomic check functions. */ #define for_each_oldnew_crtc_in_state(__state, crtc, old_crtc_state, new_crtc_state, __i) \ for ((__i) = 0; \ (__i) < (__state)->dev->mode_config.num_crtc && \ ((crtc) = (__state)->crtcs[__i].ptr, \ (old_crtc_state) = (__state)->crtcs[__i].old_state, \ (new_crtc_state) = (__state)->crtcs[__i].new_state, 1); \ (__i)++) \ for_each_if (crtc) /** * for_each_old_crtc_in_state - iterate over all CRTCs in an atomic update * @__state: &struct drm_atomic_state pointer * @crtc: &struct drm_crtc iteration cursor * @old_crtc_state: &struct drm_crtc_state iteration cursor for the old state * @__i: int iteration cursor, for macro-internal use * * This iterates over all CRTCs in an atomic update, tracking only the old * state. This is useful in disable functions, where we need the old state the * hardware is still in. */ #define for_each_old_crtc_in_state(__state, crtc, old_crtc_state, __i) \ for ((__i) = 0; \ (__i) < (__state)->dev->mode_config.num_crtc && \ ((crtc) = (__state)->crtcs[__i].ptr, \ (old_crtc_state) = (__state)->crtcs[__i].old_state, 1); \ (__i)++) \ for_each_if (crtc) /** * for_each_new_crtc_in_state - iterate over all CRTCs in an atomic update * @__state: &struct drm_atomic_state pointer * @crtc: &struct drm_crtc iteration cursor * @new_crtc_state: &struct drm_crtc_state iteration cursor for the new state * @__i: int iteration cursor, for macro-internal use * * This iterates over all CRTCs in an atomic update, tracking only the new * state. This is useful in enable functions, where we need the new state the * hardware should be in when the atomic commit operation has completed. */ #define for_each_new_crtc_in_state(__state, crtc, new_crtc_state, __i) \ for ((__i) = 0; \ (__i) < (__state)->dev->mode_config.num_crtc && \ ((crtc) = (__state)->crtcs[__i].ptr, \ (new_crtc_state) = (__state)->crtcs[__i].new_state, 1); \ (__i)++) \ for_each_if (crtc) /** * for_each_plane_in_state - iterate over all planes in an atomic update * @__state: &struct drm_atomic_state pointer * @plane: &struct drm_plane iteration cursor * @plane_state: &struct drm_plane_state iteration cursor * @__i: int iteration cursor, for macro-internal use * * This iterates over all planes in an atomic update. Note that before the * software state is committed (by calling drm_atomic_helper_swap_state(), this * points to the new state, while afterwards it points to the old state. Due to * this tricky confusion this macro is deprecated. * * FIXME: * * Replace all usage of this with one of the explicit iterators below and then * remove this macro. */ #define for_each_plane_in_state(__state, plane, plane_state, __i) \ for ((__i) = 0; \ (__i) < (__state)->dev->mode_config.num_total_plane && \ ((plane) = (__state)->planes[__i].ptr, \ (plane_state) = (__state)->planes[__i].state, 1); \ (__i)++) \ for_each_if (plane_state) /** * for_each_oldnew_plane_in_state - iterate over all planes in an atomic update * @__state: &struct drm_atomic_state pointer * @plane: &struct drm_plane iteration cursor * @old_plane_state: &struct drm_plane_state iteration cursor for the old state * @new_plane_state: &struct drm_plane_state iteration cursor for the new state * @__i: int iteration cursor, for macro-internal use * * This iterates over all planes in an atomic update, tracking both old and * new state. This is useful in places where the state delta needs to be * considered, for example in atomic check functions. */ #define for_each_oldnew_plane_in_state(__state, plane, old_plane_state, new_plane_state, __i) \ for ((__i) = 0; \ (__i) < (__state)->dev->mode_config.num_total_plane && \ ((plane) = (__state)->planes[__i].ptr, \ (old_plane_state) = (__state)->planes[__i].old_state, \ (new_plane_state) = (__state)->planes[__i].new_state, 1); \ (__i)++) \ for_each_if (plane) /** * for_each_old_plane_in_state - iterate over all planes in an atomic update * @__state: &struct drm_atomic_state pointer * @plane: &struct drm_plane iteration cursor * @old_plane_state: &struct drm_plane_state iteration cursor for the old state * @__i: int iteration cursor, for macro-internal use * * This iterates over all planes in an atomic update, tracking only the old * state. This is useful in disable functions, where we need the old state the * hardware is still in. */ #define for_each_old_plane_in_state(__state, plane, old_plane_state, __i) \ for ((__i) = 0; \ (__i) < (__state)->dev->mode_config.num_total_plane && \ ((plane) = (__state)->planes[__i].ptr, \ (old_plane_state) = (__state)->planes[__i].old_state, 1); \ (__i)++) \ for_each_if (plane) /** * for_each_new_plane_in_state - iterate over all planes in an atomic update * @__state: &struct drm_atomic_state pointer * @plane: &struct drm_plane iteration cursor * @new_plane_state: &struct drm_plane_state iteration cursor for the new state * @__i: int iteration cursor, for macro-internal use * * This iterates over all planes in an atomic update, tracking only the new * state. This is useful in enable functions, where we need the new state the * hardware should be in when the atomic commit operation has completed. */ #define for_each_new_plane_in_state(__state, plane, new_plane_state, __i) \ for ((__i) = 0; \ (__i) < (__state)->dev->mode_config.num_total_plane && \ ((plane) = (__state)->planes[__i].ptr, \ (new_plane_state) = (__state)->planes[__i].new_state, 1); \ (__i)++) \ for_each_if (plane) /** * for_each_oldnew_private_obj_in_state - iterate over all private objects in an atomic update * @__state: &struct drm_atomic_state pointer * @obj: &struct drm_private_obj iteration cursor * @old_obj_state: &struct drm_private_state iteration cursor for the old state * @new_obj_state: &struct drm_private_state iteration cursor for the new state * @__i: int iteration cursor, for macro-internal use * * This iterates over all private objects in an atomic update, tracking both * old and new state. This is useful in places where the state delta needs * to be considered, for example in atomic check functions. */ #define for_each_oldnew_private_obj_in_state(__state, obj, old_obj_state, new_obj_state, __i) \ for ((__i) = 0; \ (__i) < (__state)->num_private_objs && \ ((obj) = (__state)->private_objs[__i].ptr, \ (old_obj_state) = (__state)->private_objs[__i].old_state, \ (new_obj_state) = (__state)->private_objs[__i].new_state, 1); \ (__i)++) \ for_each_if (obj) /** * for_each_old_private_obj_in_state - iterate over all private objects in an atomic update * @__state: &struct drm_atomic_state pointer * @obj: &struct drm_private_obj iteration cursor * @old_obj_state: &struct drm_private_state iteration cursor for the old state * @__i: int iteration cursor, for macro-internal use * * This iterates over all private objects in an atomic update, tracking only * the old state. This is useful in disable functions, where we need the old * state the hardware is still in. */ #define for_each_old_private_obj_in_state(__state, obj, old_obj_state, __i) \ for ((__i) = 0; \ (__i) < (__state)->num_private_objs && \ ((obj) = (__state)->private_objs[__i].ptr, \ (old_obj_state) = (__state)->private_objs[__i].old_state, 1); \ (__i)++) \ for_each_if (obj) /** * for_each_new_private_obj_in_state - iterate over all private objects in an atomic update * @__state: &struct drm_atomic_state pointer * @obj: &struct drm_private_obj iteration cursor * @new_obj_state: &struct drm_private_state iteration cursor for the new state * @__i: int iteration cursor, for macro-internal use * * This iterates over all private objects in an atomic update, tracking only * the new state. This is useful in enable functions, where we need the new state the * hardware should be in when the atomic commit operation has completed. */ #define for_each_new_private_obj_in_state(__state, obj, new_obj_state, __i) \ for ((__i) = 0; \ (__i) < (__state)->num_private_objs && \ ((obj) = (__state)->private_objs[__i].ptr, \ (new_obj_state) = (__state)->private_objs[__i].new_state, 1); \ (__i)++) \ for_each_if (obj) /** * drm_atomic_crtc_needs_modeset - compute combined modeset need * @state: &drm_crtc_state for the CRTC * * To give drivers flexibility &struct drm_crtc_state has 3 booleans to track * whether the state CRTC changed enough to need a full modeset cycle: * mode_changed, active_changed and connectors_changed. This helper simply * combines these three to compute the overall need for a modeset for @state. * * The atomic helper code sets these booleans, but drivers can and should * change them appropriately to accurately represent whether a modeset is * really needed. In general, drivers should avoid full modesets whenever * possible. * * For example if the CRTC mode has changed, and the hardware is able to enact * the requested mode change without going through a full modeset, the driver * should clear mode_changed in its &drm_mode_config_funcs.atomic_check * implementation. */
static inline bool drm_atomic_crtc_needs_modeset(const struct drm_crtc_state *state) { return state->mode_changed || state->active_changed || state->connectors_changed; }

Contributors

PersonTokensPropCommitsCommitProp
Daniel Vetter2180.77%133.33%
Maarten Lankhorst415.38%133.33%
Ville Syrjälä13.85%133.33%
Total26100.00%3100.00%

#endif /* DRM_ATOMIC_H_ */

Overall Contributors

PersonTokensPropCommitsCommitProp
Maarten Lankhorst55539.36%923.08%
Daniel Vetter47333.55%1435.90%
Ville Syrjälä1117.87%37.69%
Dhinakaran Pandiyan845.96%12.56%
Chris Wilson553.90%12.56%
Rob Clark372.62%25.13%
Ander Conselvan de Oliveira362.55%12.56%
Daniel Stone302.13%25.13%
Gustavo Fernando Padovan251.77%410.26%
Thierry Reding40.28%25.13%
Total1410100.00%39100.00%
Directory: include/drm
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