linux/drivers/gpu/drm/i915/display/intel_atomic.c

/*
 * Copyright © 2015 Intel Corporation
 *
 * 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 (including the next
 * paragraph) 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 AUTHORS OR COPYRIGHT HOLDERS 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.
 */

/**
 * DOC: atomic modeset support
 *
 * The functions here implement the state management and hardware programming
 * dispatch required by the atomic modeset infrastructure.
 * See intel_atomic_plane.c for the plane-specific atomic functionality.
 */

#include <drm/display/drm_dp_tunnel.h>
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_fourcc.h>

#include "i915_drv.h"
#include "intel_atomic.h"
#include "intel_cdclk.h"
#include "intel_display_types.h"
#include "intel_dp_tunnel.h"
#include "intel_global_state.h"
#include "intel_hdcp.h"
#include "intel_psr.h"
#include "intel_fb.h"
#include "skl_universal_plane.h"

/**
 * intel_digital_connector_atomic_get_property - hook for connector->atomic_get_property.
 * @connector: Connector to get the property for.
 * @state: Connector state to retrieve the property from.
 * @property: Property to retrieve.
 * @val: Return value for the property.
 *
 * Returns the atomic property value for a digital connector.
 */
int intel_digital_connector_atomic_get_property(struct drm_connector *connector,
						const struct drm_connector_state *state,
						struct drm_property *property,
						u64 *val)
{ … }

/**
 * intel_digital_connector_atomic_set_property - hook for connector->atomic_set_property.
 * @connector: Connector to set the property for.
 * @state: Connector state to set the property on.
 * @property: Property to set.
 * @val: New value for the property.
 *
 * Sets the atomic property value for a digital connector.
 */
int intel_digital_connector_atomic_set_property(struct drm_connector *connector,
						struct drm_connector_state *state,
						struct drm_property *property,
						u64 val)
{ … }

int intel_digital_connector_atomic_check(struct drm_connector *conn,
					 struct drm_atomic_state *state)
{ … }

/**
 * intel_digital_connector_duplicate_state - duplicate connector state
 * @connector: digital connector
 *
 * Allocates and returns a copy of the connector state (both common and
 * digital connector specific) for the specified connector.
 *
 * Returns: The newly allocated connector state, or NULL on failure.
 */
struct drm_connector_state *
intel_digital_connector_duplicate_state(struct drm_connector *connector)
{ … }

/**
 * intel_connector_needs_modeset - check if connector needs a modeset
 * @state: the atomic state corresponding to this modeset
 * @connector: the connector
 */
bool
intel_connector_needs_modeset(struct intel_atomic_state *state,
			      struct drm_connector *connector)
{ … }

/**
 * intel_any_crtc_needs_modeset - check if any CRTC needs a modeset
 * @state: the atomic state corresponding to this modeset
 *
 * Returns true if any CRTC in @state needs a modeset.
 */
bool intel_any_crtc_needs_modeset(struct intel_atomic_state *state)
{ … }

struct intel_digital_connector_state *
intel_atomic_get_digital_connector_state(struct intel_atomic_state *state,
					 struct intel_connector *connector)
{ … }

/**
 * intel_crtc_duplicate_state - duplicate crtc state
 * @crtc: drm crtc
 *
 * Allocates and returns a copy of the crtc state (both common and
 * Intel-specific) for the specified crtc.
 *
 * Returns: The newly allocated crtc state, or NULL on failure.
 */
struct drm_crtc_state *
intel_crtc_duplicate_state(struct drm_crtc *crtc)
{ … }

static void intel_crtc_put_color_blobs(struct intel_crtc_state *crtc_state)
{ … }

void intel_crtc_free_hw_state(struct intel_crtc_state *crtc_state)
{ … }

/**
 * intel_crtc_destroy_state - destroy crtc state
 * @crtc: drm crtc
 * @state: the state to destroy
 *
 * Destroys the crtc state (both common and Intel-specific) for the
 * specified crtc.
 */
void
intel_crtc_destroy_state(struct drm_crtc *crtc,
			 struct drm_crtc_state *state)
{ … }

struct drm_atomic_state *
intel_atomic_state_alloc(struct drm_device *dev)
{ … }

void intel_atomic_state_free(struct drm_atomic_state *_state)
{ … }

void intel_atomic_state_clear(struct drm_atomic_state *s)
{ … }

struct intel_crtc_state *
intel_atomic_get_crtc_state(struct drm_atomic_state *state,
			    struct intel_crtc *crtc)
{ … }