[mirror_ubuntu-bionic-kernel.git] / 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 "linux/switch.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;
};

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;
};

/* 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_connector *aconnector);

struct amdgpu_connector *amdgpu_dm_find_first_crct_matching_connector(
	struct drm_atomic_state *state,
	struct drm_crtc *crtc,
	bool from_state_var);

#endif /* __AMDGPU_DM_H__ */
Commit	Line	Data
4562236b HW	1	/*
	2	* Copyright 2015 Advanced Micro Devices, Inc.
	3	*
	4	* Permission is hereby granted, free of charge, to any person obtaining a
	5	* copy of this software and associated documentation files (the "Software"),
	6	* to deal in the Software without restriction, including without limitation
	7	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	8	* and/or sell copies of the Software, and to permit persons to whom the
	9	* Software is furnished to do so, subject to the following conditions:
	10	*
	11	* The above copyright notice and this permission notice shall be included in
	12	* all copies or substantial portions of the Software.
	13	*
	14	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	15	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	16	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	17	* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
	18	* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
	19	* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
	20	* OTHER DEALINGS IN THE SOFTWARE.
	21	*
	22	* Authors: AMD
	23	*
	24	*/
	25
	26	#ifndef __AMDGPU_DM_H__
	27	#define __AMDGPU_DM_H__
	28
	29	/*
	30	#include "linux/switch.h"
	31	*/
	32
	33	/*
	34	* This file contains the definition for amdgpu_display_manager
	35	* and its API for amdgpu driver's use.
	36	* This component provides all the display related functionality
	37	* and this is the only component that calls DAL API.
	38	* The API contained here intended for amdgpu driver use.
	39	* The API that is called directly from KMS framework is located
	40	* in amdgpu_dm_kms.h file
	41	*/
	42
	43	#define AMDGPU_DM_MAX_DISPLAY_INDEX 31
	44	/*
	45	#include "include/amdgpu_dal_power_if.h"
	46	#include "amdgpu_dm_irq.h"
	47	*/
	48
	49	#include "irq_types.h"
	50	#include "signal_types.h"
	51
	52	/* Forward declarations */
	53	struct amdgpu_device;
	54	struct drm_device;
	55	struct amdgpu_dm_irq_handler_data;
	56
	57	struct amdgpu_dm_prev_state {
	58	struct drm_framebuffer *fb;
	59	int32_t x;
	60	int32_t y;
	61	struct drm_display_mode mode;
	62	};
	63
	64	struct common_irq_params {
65	struct amdgpu_device *adev;
66	enum dc_irq_source irq_src;
67	};
68
69	struct irq_list_head {
70	struct list_head head;
71	/* In case this interrupt needs post-processing, 'work' will be queued*/
72	struct work_struct work;
73	};
74
75	struct amdgpu_display_manager {
76	struct dal *dal;
77	struct dc *dc;
78	struct cgs_device *cgs_device;
79	/* lock to be used when DAL is called from SYNC IRQ context */
80	spinlock_t dal_lock;
81
82	struct amdgpu_device adev; /AMD base driver*/
83	struct drm_device ddev; /DRM base driver*/
84	u16 display_indexes_num;
85
86	struct amdgpu_dm_prev_state prev_state;
87
88	/*
89	* 'irq_source_handler_table' holds a list of handlers
90	* per (DAL) IRQ source.
91	*
92	* Each IRQ source may need to be handled at different contexts.
93	* By 'context' we mean, for example:
94	* - The ISR context, which is the direct interrupt handler.
95	* - The 'deferred' context - this is the post-processing of the
96	* interrupt, but at a lower priority.
97	*
98	* Note that handlers are called in the same order as they were
99	* registered (FIFO).
100	*/
101	struct irq_list_head irq_handler_list_low_tab[DAL_IRQ_SOURCES_NUMBER];
102	struct list_head irq_handler_list_high_tab[DAL_IRQ_SOURCES_NUMBER];
103
104	struct common_irq_params
105	pflip_params[DC_IRQ_SOURCE_PFLIP_LAST - DC_IRQ_SOURCE_PFLIP_FIRST + 1];
106
107	struct common_irq_params
b57de80a	108	vblank_params[DC_IRQ_SOURCE_VBLANK6 - DC_IRQ_SOURCE_VBLANK1 + 1];
4562236b HW	109
	110	/* this spin lock synchronizes access to 'irq_handler_list_table' */
	111	spinlock_t irq_handler_list_table_lock;
	112
	113	/* Timer-related data. */
	114	struct list_head timer_handler_list;
	115	struct workqueue_struct *timer_workqueue;
	116
	117	/* Use dal_mutex for any activity which is NOT syncronized by
	118	* DRM mode setting locks.
	119	* For example: amdgpu_dm_hpd_low_irq() calls into DAL without
	120	* DRM mode setting locks being acquired. This is where dal_mutex
	121	* is acquired before calling into DAL. */
	122	struct mutex dal_mutex;
	123
	124	struct backlight_device *backlight_dev;
	125
	126	const struct dc_link *backlight_link;
	127
	128	struct work_struct mst_hotplug_work;
	129
	130	struct mod_freesync *freesync_module;
a3621485 AG	131
	132	/**
	133	* Caches device atomic state for suspend/resume
	134	*/
	135	struct drm_atomic_state *cached_state;
4562236b HW	136	};
	137
	138	/* basic init/fini API */
	139	int amdgpu_dm_init(struct amdgpu_device *adev);
	140
	141	void amdgpu_dm_fini(struct amdgpu_device *adev);
	142
	143	void amdgpu_dm_destroy(void);
	144
	145	/* initializes drm_device display related structures, based on the information
	146	* provided by DAL. The drm strcutures are: drm_crtc, drm_connector,
	147	* drm_encoder, drm_mode_config
	148	*
	149	* Returns 0 on success
	150	*/
	151	int amdgpu_dm_initialize_drm_device(
	152	struct amdgpu_device *adev);
	153
	154	/* removes and deallocates the drm structures, created by the above function */
	155	void amdgpu_dm_destroy_drm_device(
	156	struct amdgpu_display_manager *dm);
	157
	158	/* Locking/Mutex */
	159	bool amdgpu_dm_acquire_dal_lock(struct amdgpu_display_manager *dm);
	160
	161	bool amdgpu_dm_release_dal_lock(struct amdgpu_display_manager *dm);
	162
	163	/* Register "Backlight device" accessible by user-mode. */
	164	void amdgpu_dm_register_backlight_device(struct amdgpu_display_manager *dm);
	165
	166	extern const struct amdgpu_ip_block_version dm_ip_block;
	167
	168	void amdgpu_dm_update_connector_after_detect(
	169	struct amdgpu_connector *aconnector);
	170
	171	struct amdgpu_connector *amdgpu_dm_find_first_crct_matching_connector(
	172	struct drm_atomic_state *state,
	173	struct drm_crtc *crtc,
	174	bool from_state_var);
	175
	176	#endif /* __AMDGPU_DM_H__ */