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/*

 * 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 

 * Daniel Vetter 

 */

#ifndef DRM_ATOMIC_HELPER_H_

#define DRM_ATOMIC_HELPER_H_

#include 

struct drm_atomic_state;

int drm_atomic_helper_check_modeset(struct drm_device *dev,

				struct drm_atomic_state *state);

int drm_atomic_helper_check_planes(struct drm_device *dev,

			       struct drm_atomic_state *state);

int drm_atomic_helper_check(struct drm_device *dev,

			    struct drm_atomic_state *state);

int drm_atomic_helper_commit(struct drm_device *dev,

			     struct drm_atomic_state *state,

			     bool async);

bool drm_atomic_helper_framebuffer_changed(struct drm_device *dev,

					   struct drm_atomic_state *old_state,

					   struct drm_crtc *crtc);

void drm_atomic_helper_wait_for_vblanks(struct drm_device *dev,

					struct drm_atomic_state *old_state);

void

drm_atomic_helper_update_legacy_modeset_state(struct drm_device *dev,

					      struct drm_atomic_state *old_state);

void drm_atomic_helper_commit_modeset_disables(struct drm_device *dev,

					       struct drm_atomic_state *state);

void drm_atomic_helper_commit_modeset_enables(struct drm_device *dev,

					  struct drm_atomic_state *old_state);

int drm_atomic_helper_prepare_planes(struct drm_device *dev,

				     struct drm_atomic_state *state);

void drm_atomic_helper_commit_planes(struct drm_device *dev,

				     struct drm_atomic_state *state,

				     bool active_only);

void drm_atomic_helper_cleanup_planes(struct drm_device *dev,

				      struct drm_atomic_state *old_state);

void drm_atomic_helper_commit_planes_on_crtc(struct drm_crtc_state *old_crtc_state);

void drm_atomic_helper_disable_planes_on_crtc(struct drm_crtc *crtc,

					      bool atomic);

void drm_atomic_helper_swap_state(struct drm_device *dev,

				  struct drm_atomic_state *state);

/* implementations for legacy interfaces */

int drm_atomic_helper_update_plane(struct drm_plane *plane,

				   struct drm_crtc *crtc,

				   struct drm_framebuffer *fb,

				   int crtc_x, int crtc_y,

				   unsigned int crtc_w, unsigned int crtc_h,

				   uint32_t src_x, uint32_t src_y,

				   uint32_t src_w, uint32_t src_h);

int drm_atomic_helper_disable_plane(struct drm_plane *plane);

int __drm_atomic_helper_disable_plane(struct drm_plane *plane,

		struct drm_plane_state *plane_state);

int drm_atomic_helper_set_config(struct drm_mode_set *set);

int __drm_atomic_helper_set_config(struct drm_mode_set *set,

		struct drm_atomic_state *state);

int drm_atomic_helper_disable_all(struct drm_device *dev,

				  struct drm_modeset_acquire_ctx *ctx);

struct drm_atomic_state *drm_atomic_helper_suspend(struct drm_device *dev);

int drm_atomic_helper_resume(struct drm_device *dev,

			     struct drm_atomic_state *state);

int drm_atomic_helper_crtc_set_property(struct drm_crtc *crtc,

					struct drm_property *property,

					uint64_t val);

int drm_atomic_helper_plane_set_property(struct drm_plane *plane,

					struct drm_property *property,

					uint64_t val);

int drm_atomic_helper_connector_set_property(struct drm_connector *connector,

					struct drm_property *property,

					uint64_t val);

int drm_atomic_helper_page_flip(struct drm_crtc *crtc,

				struct drm_framebuffer *fb,

				struct drm_pending_vblank_event *event,

				uint32_t flags);

int drm_atomic_helper_connector_dpms(struct drm_connector *connector,

				     int mode);

/* default implementations for state handling */

void drm_atomic_helper_crtc_reset(struct drm_crtc *crtc);

void __drm_atomic_helper_crtc_duplicate_state(struct drm_crtc *crtc,

					      struct drm_crtc_state *state);

struct drm_crtc_state *

drm_atomic_helper_crtc_duplicate_state(struct drm_crtc *crtc);

void __drm_atomic_helper_crtc_destroy_state(struct drm_crtc *crtc,

					    struct drm_crtc_state *state);

void drm_atomic_helper_crtc_destroy_state(struct drm_crtc *crtc,

					  struct drm_crtc_state *state);

void drm_atomic_helper_plane_reset(struct drm_plane *plane);

void __drm_atomic_helper_plane_duplicate_state(struct drm_plane *plane,

					       struct drm_plane_state *state);

struct drm_plane_state *

drm_atomic_helper_plane_duplicate_state(struct drm_plane *plane);

void __drm_atomic_helper_plane_destroy_state(struct drm_plane *plane,

					     struct drm_plane_state *state);

void drm_atomic_helper_plane_destroy_state(struct drm_plane *plane,

					  struct drm_plane_state *state);

void __drm_atomic_helper_connector_reset(struct drm_connector *connector,

					 struct drm_connector_state *conn_state);

void drm_atomic_helper_connector_reset(struct drm_connector *connector);

void

__drm_atomic_helper_connector_duplicate_state(struct drm_connector *connector,

					   struct drm_connector_state *state);

struct drm_connector_state *

drm_atomic_helper_connector_duplicate_state(struct drm_connector *connector);

struct drm_atomic_state *

drm_atomic_helper_duplicate_state(struct drm_device *dev,

				  struct drm_modeset_acquire_ctx *ctx);

void

__drm_atomic_helper_connector_destroy_state(struct drm_connector *connector,

					    struct drm_connector_state *state);

void drm_atomic_helper_connector_destroy_state(struct drm_connector *connector,

					  struct drm_connector_state *state);

/**

 * drm_atomic_crtc_for_each_plane - iterate over planes currently attached to CRTC

 * @plane: the loop cursor

 * @crtc:  the crtc whose planes are iterated

 *

 * This iterates over the current state, useful (for example) when applying

 * atomic state after it has been checked and swapped.  To iterate over the

 * planes which *will* be attached (for ->atomic_check()) see

 * drm_crtc_for_each_pending_plane()

 */

#define drm_atomic_crtc_for_each_plane(plane, crtc) \

	drm_for_each_plane_mask(plane, (crtc)->dev, (crtc)->state->plane_mask)

/**

 * drm_crtc_atomic_state_for_each_plane - iterate over attached planes in new state

 * @plane: the loop cursor

 * @crtc_state: the incoming crtc-state

 *

 * Similar to drm_crtc_for_each_plane(), but iterates the planes that will be

 * attached if the specified state is applied.  Useful during (for example)

 * ->atomic_check() operations, to validate the incoming state

 */

#define drm_atomic_crtc_state_for_each_plane(plane, crtc_state) \

	drm_for_each_plane_mask(plane, (crtc_state)->state->dev, (crtc_state)->plane_mask)

/*

 * drm_atomic_plane_disabling - check whether a plane is being disabled

 * @plane: plane object

 * @old_state: previous atomic state

 *

 * Checks the atomic state of a plane to determine whether it's being disabled

 * or not. This also WARNs if it detects an invalid state (both CRTC and FB

 * need to either both be NULL or both be non-NULL).

 *

 * RETURNS:

 * True if the plane is being disabled, false otherwise.

 */

static inline bool

drm_atomic_plane_disabling(struct drm_plane *plane,

			   struct drm_plane_state *old_state)

{

	/*

	 * When disabling a plane, CRTC and FB should always be NULL together.

	 * Anything else should be considered a bug in the atomic core, so we

	 * gently warn about it.

	 */

	WARN_ON((plane->state->crtc == NULL && plane->state->fb != NULL) ||

		(plane->state->crtc != NULL && plane->state->fb == NULL));

	/*

	 * When using the transitional helpers, old_state may be NULL. If so,

	 * we know nothing about the current state and have to assume that it

	 * might be enabled.

	 *

	 * When using the atomic helpers, old_state won't be NULL. Therefore

	 * this check assumes that either the driver will have reconstructed

	 * the correct state in ->reset() or that the driver will have taken

	 * appropriate measures to disable all planes.

	 */

	return (!old_state || old_state->crtc) && !plane->state->crtc;

}

#endif /* DRM_ATOMIC_HELPER_H_ */