1/*
2 * Copyright 2019 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_AMDGPU_DM_HDCP_H_
27#define AMDGPU_DM_AMDGPU_DM_HDCP_H_
28
29#include "mod_hdcp.h"
30#include "hdcp.h"
31#include "dc.h"
32#include "dm_cp_psp.h"
33#include "amdgpu.h"
34
35struct mod_hdcp;
36struct mod_hdcp_link;
37struct mod_hdcp_display;
38struct cp_psp;
39
40struct hdcp_workqueue {
41 struct work_struct cpirq_work;
42 struct work_struct property_update_work;
43 struct delayed_work callback_dwork;
44 struct delayed_work watchdog_timer_dwork;
45 struct delayed_work property_validate_dwork;
46 struct amdgpu_dm_connector *aconnector[AMDGPU_DM_MAX_DISPLAY_INDEX];
47 struct mutex mutex;
48
49 struct mod_hdcp hdcp;
50 struct mod_hdcp_output output;
51 struct mod_hdcp_display display;
52 struct mod_hdcp_link link;
53
54 enum mod_hdcp_encryption_status encryption_status[AMDGPU_DM_MAX_DISPLAY_INDEX];
55 /* when display is unplugged from mst hub, connctor will be
56 * destroyed within dm_dp_mst_connector_destroy. connector
57 * hdcp perperties, like type, undesired, desired, enabled,
58 * will be lost. So, save hdcp properties into hdcp_work within
59 * amdgpu_dm_atomic_commit_tail. if the same display is
60 * plugged back with same display index, its hdcp properties
61 * will be retrieved from hdcp_work within dm_dp_mst_get_modes
62 */
63 /* un-desired, desired, enabled */
64 unsigned int content_protection[AMDGPU_DM_MAX_DISPLAY_INDEX];
65 /* hdcp1.x, hdcp2.x */
66 unsigned int hdcp_content_type[AMDGPU_DM_MAX_DISPLAY_INDEX];
67
68 uint8_t max_link;
69
70 uint8_t *srm;
71 uint8_t *srm_temp;
72 uint32_t srm_version;
73 uint32_t srm_size;
74 struct bin_attribute attr;
75};
76
77void hdcp_update_display(struct hdcp_workqueue *hdcp_work,
78 unsigned int link_index,
79 struct amdgpu_dm_connector *aconnector,
80 uint8_t content_type,
81 bool enable_encryption);
82
83void hdcp_reset_display(struct hdcp_workqueue *work, unsigned int link_index);
84void hdcp_handle_cpirq(struct hdcp_workqueue *work, unsigned int link_index);
85void hdcp_destroy(struct kobject *kobj, struct hdcp_workqueue *work);
86
87struct hdcp_workqueue *hdcp_create_workqueue(struct amdgpu_device *adev, struct cp_psp *cp_psp, struct dc *dc);
88
89#endif /* AMDGPU_DM_AMDGPU_DM_HDCP_H_ */
90

source code of linux/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.h