1/*
2 * Copyright 2023 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#include "amdgpu_dm_replay.h"
27#include "dc.h"
28#include "dm_helpers.h"
29#include "amdgpu_dm.h"
30#include "modules/power/power_helpers.h"
31#include "dmub/inc/dmub_cmd.h"
32#include "dc/inc/link.h"
33
34/*
35 * link_supports_replay() - check if the link supports replay
36 * @link: link
37 * @aconnector: aconnector
38 *
39 */
40static bool link_supports_replay(struct dc_link *link, struct amdgpu_dm_connector *aconnector)
41{
42 struct dm_connector_state *state = to_dm_connector_state(aconnector->base.state);
43 struct dpcd_caps *dpcd_caps = &link->dpcd_caps;
44 struct adaptive_sync_caps *as_caps = &link->dpcd_caps.adaptive_sync_caps;
45
46 if (!state->freesync_capable)
47 return false;
48
49 if (!aconnector->vsdb_info.replay_mode)
50 return false;
51
52 // Check the eDP version
53 if (dpcd_caps->edp_rev < EDP_REVISION_13)
54 return false;
55
56 if (!dpcd_caps->alpm_caps.bits.AUX_WAKE_ALPM_CAP)
57 return false;
58
59 // Check adaptive sync support cap
60 if (!as_caps->dp_adap_sync_caps.bits.ADAPTIVE_SYNC_SDP_SUPPORT)
61 return false;
62
63 // Sink shall populate line deviation information
64 if (dpcd_caps->pr_info.pixel_deviation_per_line == 0 ||
65 dpcd_caps->pr_info.max_deviation_line == 0)
66 return false;
67
68 return true;
69}
70
71/*
72 * amdgpu_dm_set_replay_caps() - setup Replay capabilities
73 * @link: link
74 * @aconnector: aconnector
75 *
76 */
77bool amdgpu_dm_set_replay_caps(struct dc_link *link, struct amdgpu_dm_connector *aconnector)
78{
79 struct replay_config pr_config = { 0 };
80 union replay_debug_flags *debug_flags = NULL;
81
82 // If Replay is already set to support, return true to skip checks
83 if (link->replay_settings.config.replay_supported)
84 return true;
85
86 if (!dc_is_embedded_signal(signal: link->connector_signal))
87 return false;
88
89 if (link->panel_config.psr.disallow_replay)
90 return false;
91
92 if (!link_supports_replay(link, aconnector))
93 return false;
94
95 // Mark Replay is supported in pr_config
96 pr_config.replay_supported = true;
97
98 debug_flags = (union replay_debug_flags *)&pr_config.debug_flags;
99 debug_flags->u32All = 0;
100 debug_flags->bitfields.visual_confirm =
101 link->ctx->dc->debug.visual_confirm == VISUAL_CONFIRM_REPLAY;
102
103 init_replay_config(link, pr_config: &pr_config);
104
105 return true;
106}
107
108/*
109 * amdgpu_dm_link_setup_replay() - configure replay link
110 * @link: link
111 * @aconnector: aconnector
112 *
113 */
114bool amdgpu_dm_link_setup_replay(struct dc_link *link, struct amdgpu_dm_connector *aconnector)
115{
116 struct replay_config *pr_config;
117
118 if (link == NULL || aconnector == NULL)
119 return false;
120
121 pr_config = &link->replay_settings.config;
122
123 if (!pr_config->replay_supported)
124 return false;
125
126 pr_config->replay_power_opt_supported = 0x11;
127 pr_config->replay_smu_opt_supported = false;
128 pr_config->replay_enable_option |= pr_enable_option_static_screen;
129 pr_config->replay_support_fast_resync_in_ultra_sleep_mode = aconnector->max_vfreq >= 2 * aconnector->min_vfreq;
130 pr_config->replay_timing_sync_supported = false;
131
132 if (!pr_config->replay_timing_sync_supported)
133 pr_config->replay_enable_option &= ~pr_enable_option_general_ui;
134
135 link->replay_settings.replay_feature_enabled = true;
136
137 return true;
138}
139
140/*
141 * amdgpu_dm_replay_enable() - enable replay f/w
142 * @stream: stream state
143 *
144 * Return: true if success
145 */
146bool amdgpu_dm_replay_enable(struct dc_stream_state *stream, bool wait)
147{
148 bool replay_active = true;
149 struct dc_link *link = NULL;
150
151 if (stream == NULL)
152 return false;
153
154 link = stream->link;
155
156 if (link) {
157 link->dc->link_srv->edp_setup_replay(link, stream);
158 link->dc->link_srv->edp_set_coasting_vtotal(link, stream->timing.v_total);
159 DRM_DEBUG_DRIVER("Enabling replay...\n");
160 link->dc->link_srv->edp_set_replay_allow_active(link, &replay_active, wait, false, NULL);
161 return true;
162 }
163
164 return false;
165}
166
167/*
168 * amdgpu_dm_replay_disable() - disable replay f/w
169 * @stream: stream state
170 *
171 * Return: true if success
172 */
173bool amdgpu_dm_replay_disable(struct dc_stream_state *stream)
174{
175 bool replay_active = false;
176 struct dc_link *link = NULL;
177
178 if (stream == NULL)
179 return false;
180
181 link = stream->link;
182
183 if (link) {
184 DRM_DEBUG_DRIVER("Disabling replay...\n");
185 link->dc->link_srv->edp_set_replay_allow_active(stream->link, &replay_active, true, false, NULL);
186 return true;
187 }
188
189 return false;
190}
191
192/*
193 * amdgpu_dm_replay_disable_all() - disable replay f/w
194 * if replay is enabled on any stream
195 *
196 * Return: true if success
197 */
198bool amdgpu_dm_replay_disable_all(struct amdgpu_display_manager *dm)
199{
200 DRM_DEBUG_DRIVER("Disabling replay if replay is enabled on any stream\n");
201 return dc_set_replay_allow_active(dc: dm->dc, active: false);
202}
203

source code of linux/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_replay.c