linux_kernel/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h

/*
 * Copyright 2015 Advanced Micro Devices, Inc.
 *
 * 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: AMD
 *
 */

#ifndef __AMDGPU_DM_H__
#define __AMDGPU_DM_H__

#include <drm/drmP.h>
#include <drm/drm_atomic.h>
#include "dc.h"

/*
 * This file contains the definition for amdgpu_display_manager
 * and its API for amdgpu driver's use.
 * This component provides all the display related functionality
 * and this is the only component that calls DAL API.
 * The API contained here intended for amdgpu driver use.
 * The API that is called directly from KMS framework is located
 * in amdgpu_dm_kms.h file
 */

#define AMDGPU_DM_MAX_DISPLAY_INDEX 31
/*
#include "include/amdgpu_dal_power_if.h"
#include "amdgpu_dm_irq.h"
*/

#include "irq_types.h"
#include "signal_types.h"

/* Forward declarations */
struct amdgpu_device;
struct drm_device;
struct amdgpu_dm_irq_handler_data;

struct amdgpu_dm_prev_state {
	struct drm_framebuffer *fb;
	int32_t x;
	int32_t y;
	struct drm_display_mode mode;
};

struct common_irq_params {
	struct amdgpu_device *adev;
	enum dc_irq_source irq_src;
};

struct irq_list_head {
	struct list_head head;
	/* In case this interrupt needs post-processing, 'work' will be queued*/
	struct work_struct work;
};

#ifdef ENABLE_FBC
struct dm_comressor_info {
	void *cpu_addr;
	struct amdgpu_bo *bo_ptr;
	uint64_t gpu_addr;
};
#endif


struct amdgpu_display_manager {
	struct dal *dal;
	struct dc *dc;
	struct cgs_device *cgs_device;
	/* lock to be used when DAL is called from SYNC IRQ context */
	spinlock_t dal_lock;

	struct amdgpu_device *adev;	/*AMD base driver*/
	struct drm_device *ddev;	/*DRM base driver*/
	u16 display_indexes_num;

	struct amdgpu_dm_prev_state prev_state;

	/*
	 * 'irq_source_handler_table' holds a list of handlers
	 * per (DAL) IRQ source.
	 *
	 * Each IRQ source may need to be handled at different contexts.
	 * By 'context' we mean, for example:
	 * - The ISR context, which is the direct interrupt handler.
	 * - The 'deferred' context - this is the post-processing of the
	 *	interrupt, but at a lower priority.
	 *
	 * Note that handlers are called in the same order as they were
	 * registered (FIFO).
	 */
	struct irq_list_head irq_handler_list_low_tab[DAL_IRQ_SOURCES_NUMBER];
	struct list_head irq_handler_list_high_tab[DAL_IRQ_SOURCES_NUMBER];

	struct common_irq_params
	pflip_params[DC_IRQ_SOURCE_PFLIP_LAST - DC_IRQ_SOURCE_PFLIP_FIRST + 1];

	struct common_irq_params
	vblank_params[DC_IRQ_SOURCE_VBLANK6 - DC_IRQ_SOURCE_VBLANK1 + 1];

	/* this spin lock synchronizes access to 'irq_handler_list_table' */
	spinlock_t irq_handler_list_table_lock;

	/* Timer-related data. */
	struct list_head timer_handler_list;
	struct workqueue_struct *timer_workqueue;

	/* Use dal_mutex for any activity which is NOT syncronized by
	 * DRM mode setting locks.
	 * For example: amdgpu_dm_hpd_low_irq() calls into DAL *without*
	 * DRM mode setting locks being acquired. This is where dal_mutex
	 * is acquired before calling into DAL. */
	struct mutex dal_mutex;

	struct backlight_device *backlight_dev;

	const struct dc_link *backlight_link;

	struct work_struct mst_hotplug_work;

	struct mod_freesync *freesync_module;

	/**
	 * Caches device atomic state for suspend/resume
	 */
	struct drm_atomic_state *cached_state;
#ifdef ENABLE_FBC
	struct dm_comressor_info compressor;
#endif
};

struct amdgpu_dm_connector {

	struct drm_connector base;
	uint32_t connector_id;

	/* we need to mind the EDID between detect
	   and get modes due to analog/digital/tvencoder */
	struct edid *edid;

	/* shared with amdgpu */
	struct amdgpu_hpd hpd;

	/* number of modes generated from EDID at 'dc_sink' */
	int num_modes;

	/* The 'old' sink - before an HPD.
	 * The 'current' sink is in dc_link->sink. */
	struct dc_sink *dc_sink;
	struct dc_link *dc_link;
	struct dc_sink *dc_em_sink;

	/* DM only */
	struct drm_dp_mst_topology_mgr mst_mgr;
	struct amdgpu_dm_dp_aux dm_dp_aux;
	struct drm_dp_mst_port *port;
	struct amdgpu_dm_connector *mst_port;
	struct amdgpu_encoder *mst_encoder;

	/* TODO see if we can merge with ddc_bus or make a dm_connector */
	struct amdgpu_i2c_adapter *i2c;

	/* Monitor range limits */
	int min_vfreq ;
	int max_vfreq ;
	int pixel_clock_mhz;

	/*freesync caps*/
	struct mod_freesync_caps caps;

	struct mutex hpd_lock;

	bool fake_enable;
};

#define to_amdgpu_dm_connector(x) container_of(x, struct amdgpu_dm_connector, base)

/* basic init/fini API */
int amdgpu_dm_init(struct amdgpu_device *adev);

void amdgpu_dm_fini(struct amdgpu_device *adev);

void amdgpu_dm_destroy(void);

/* initializes drm_device display related structures, based on the information
 * provided by DAL. The drm strcutures are: drm_crtc, drm_connector,
 * drm_encoder, drm_mode_config
 *
 * Returns 0 on success
 */
int amdgpu_dm_initialize_drm_device(
	struct amdgpu_device *adev);

/* removes and deallocates the drm structures, created by the above function */
void amdgpu_dm_destroy_drm_device(
	struct amdgpu_display_manager *dm);

/* Locking/Mutex */
bool amdgpu_dm_acquire_dal_lock(struct amdgpu_display_manager *dm);

bool amdgpu_dm_release_dal_lock(struct amdgpu_display_manager *dm);

/* Register "Backlight device" accessible by user-mode. */
void amdgpu_dm_register_backlight_device(struct amdgpu_display_manager *dm);

extern const struct amdgpu_ip_block_version dm_ip_block;

void amdgpu_dm_update_connector_after_detect(
	struct amdgpu_dm_connector *aconnector);

struct amdgpu_dm_connector *amdgpu_dm_find_first_crct_matching_connector(
	struct drm_atomic_state *state,
	struct drm_crtc *crtc);


struct amdgpu_framebuffer;
struct amdgpu_display_manager;
struct dc_validation_set;
struct dc_plane_state;
/* TODO rename to dc_stream_state */
struct  dc_stream;

struct dm_plane_state {
	struct drm_plane_state base;
	struct dc_plane_state *dc_state;
};

struct dm_crtc_state {
	struct drm_crtc_state base;
	struct dc_stream_state *stream;
};

#define to_dm_crtc_state(x)    container_of(x, struct dm_crtc_state, base)

struct dm_atomic_state {
	struct drm_atomic_state base;

	struct dc_state *context;
};

#define to_dm_atomic_state(x) container_of(x, struct dm_atomic_state, base)


/*TODO Jodan Hersen use the one in amdgpu_dm*/
int amdgpu_dm_plane_init(struct amdgpu_display_manager *dm,
			struct amdgpu_plane *aplane,
			unsigned long possible_crtcs);
int amdgpu_dm_crtc_init(struct amdgpu_display_manager *dm,
			struct drm_plane *plane,
			uint32_t link_index);
int amdgpu_dm_connector_init(struct amdgpu_display_manager *dm,
			struct amdgpu_dm_connector *amdgpu_dm_connector,
			uint32_t link_index,
			struct amdgpu_encoder *amdgpu_encoder);
int amdgpu_dm_encoder_init(
	struct drm_device *dev,
	struct amdgpu_encoder *aencoder,
	uint32_t link_index);

void amdgpu_dm_crtc_destroy(struct drm_crtc *crtc);
void amdgpu_dm_connector_destroy(struct drm_connector *connector);
void amdgpu_dm_encoder_destroy(struct drm_encoder *encoder);

int amdgpu_dm_connector_get_modes(struct drm_connector *connector);

int amdgpu_dm_atomic_commit(
		struct drm_device *dev,
		struct drm_atomic_state *state,
		bool nonblock);

void amdgpu_dm_atomic_commit_tail(
	struct drm_atomic_state *state);

int amdgpu_dm_atomic_check(struct drm_device *dev,
				struct drm_atomic_state *state);

void amdgpu_dm_connector_funcs_reset(struct drm_connector *connector);
struct drm_connector_state *amdgpu_dm_connector_atomic_duplicate_state(
	struct drm_connector *connector);
int amdgpu_dm_connector_atomic_set_property(
	struct drm_connector *connector,
	struct drm_connector_state *state,
	struct drm_property *property,
	uint64_t val);

int amdgpu_dm_connector_atomic_get_property(
	struct drm_connector *connector,
	const struct drm_connector_state *state,
	struct drm_property *property,
	uint64_t *val);

int amdgpu_dm_get_encoder_crtc_mask(struct amdgpu_device *adev);

void amdgpu_dm_connector_init_helper(
	struct amdgpu_display_manager *dm,
	struct amdgpu_dm_connector *aconnector,
	int connector_type,
	struct dc_link *link,
	int link_index);

int amdgpu_dm_connector_mode_valid(
	struct drm_connector *connector,
	struct drm_display_mode *mode);

void dm_restore_drm_connector_state(struct drm_device *dev, struct drm_connector *connector);

void amdgpu_dm_add_sink_to_freesync_module(
		struct drm_connector *connector,
		struct edid *edid);

void amdgpu_dm_remove_sink_from_freesync_module(
		struct drm_connector *connector);

extern const struct drm_encoder_helper_funcs amdgpu_dm_encoder_helper_funcs;

#endif /* __AMDGPU_DM_H__ */