1// SPDX-License-Identifier: MIT
2/*
3 * Copyright 2023 Advanced Micro Devices, Inc.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
19 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
20 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
21 * OTHER DEALINGS IN THE SOFTWARE.
22 *
23 * Authors: AMD
24 *
25 */
26
27#include "amdgpu_dm_replay.h"
28#include "dc_dmub_srv.h"
29#include "dc.h"
30#include "dm_helpers.h"
31#include "amdgpu_dm.h"
32#include "modules/power/power_helpers.h"
33#include "dmub/inc/dmub_cmd.h"
34#include "dc/inc/link_service.h"
35
36/*
37 * amdgpu_dm_link_supports_replay() - check if the link supports replay
38 * @link: link
39 * @aconnector: aconnector
40 *
41 */
42bool amdgpu_dm_link_supports_replay(struct dc_link *link, struct amdgpu_dm_connector *aconnector)
43{
44 struct dm_connector_state *state = to_dm_connector_state(aconnector->base.state);
45 struct dpcd_caps *dpcd_caps = &link->dpcd_caps;
46 struct adaptive_sync_caps *as_caps = &link->dpcd_caps.adaptive_sync_caps;
47
48 if (!state->freesync_capable)
49 return false;
50
51 if (!aconnector->vsdb_info.replay_mode)
52 return false;
53
54 // Check the eDP version
55 if (dpcd_caps->edp_rev < EDP_REVISION_13)
56 return false;
57
58 if (!dpcd_caps->alpm_caps.bits.AUX_WAKE_ALPM_CAP)
59 return false;
60
61 // Check adaptive sync support cap
62 if (!as_caps->dp_adap_sync_caps.bits.ADAPTIVE_SYNC_SDP_SUPPORT)
63 return false;
64
65 // Sink shall populate line deviation information
66 if (dpcd_caps->pr_info.pixel_deviation_per_line == 0 ||
67 dpcd_caps->pr_info.max_deviation_line == 0)
68 return false;
69
70 return true;
71}
72
73/*
74 * amdgpu_dm_set_replay_caps() - setup Replay capabilities
75 * @link: link
76 * @aconnector: aconnector
77 *
78 */
79bool amdgpu_dm_set_replay_caps(struct dc_link *link, struct amdgpu_dm_connector *aconnector)
80{
81 struct replay_config pr_config = { 0 };
82 union replay_debug_flags *debug_flags = NULL;
83 struct dc *dc = link->ctx->dc;
84
85 // If Replay is already set to support, return true to skip checks
86 if (link->replay_settings.config.replay_supported)
87 return true;
88
89 if (!dc_is_embedded_signal(signal: link->connector_signal))
90 return false;
91
92 if (link->panel_config.psr.disallow_replay)
93 return false;
94
95 if (!amdgpu_dm_link_supports_replay(link, aconnector))
96 return false;
97
98 if (!dc->ctx->dmub_srv || !dc->ctx->dmub_srv->dmub ||
99 !dc->ctx->dmub_srv->dmub->feature_caps.replay_supported)
100 return false;
101
102 // Mark Replay is supported in pr_config
103 pr_config.replay_supported = true;
104
105 debug_flags = (union replay_debug_flags *)&pr_config.debug_flags;
106 debug_flags->u32All = 0;
107 debug_flags->bitfields.visual_confirm =
108 link->ctx->dc->debug.visual_confirm == VISUAL_CONFIRM_REPLAY;
109
110 init_replay_config(link, pr_config: &pr_config);
111
112 return true;
113}
114
115/*
116 * amdgpu_dm_link_setup_replay() - configure replay link
117 * @link: link
118 * @aconnector: aconnector
119 *
120 */
121bool amdgpu_dm_link_setup_replay(struct dc_link *link, struct amdgpu_dm_connector *aconnector)
122{
123 struct replay_config *pr_config;
124
125 if (link == NULL || aconnector == NULL)
126 return false;
127
128 pr_config = &link->replay_settings.config;
129
130 if (!pr_config->replay_supported)
131 return false;
132
133 pr_config->replay_power_opt_supported = 0x11;
134 pr_config->replay_smu_opt_supported = false;
135 pr_config->replay_enable_option |= pr_enable_option_static_screen;
136 pr_config->replay_support_fast_resync_in_ultra_sleep_mode = aconnector->max_vfreq >= 2 * aconnector->min_vfreq;
137 pr_config->replay_timing_sync_supported = false;
138
139 if (!pr_config->replay_timing_sync_supported)
140 pr_config->replay_enable_option &= ~pr_enable_option_general_ui;
141
142 link->replay_settings.replay_feature_enabled = true;
143
144 return true;
145}
146
147/*
148 * amdgpu_dm_replay_enable() - enable replay f/w
149 * @stream: stream state
150 *
151 * Return: true if success
152 */
153bool amdgpu_dm_replay_enable(struct dc_stream_state *stream, bool wait)
154{
155 bool replay_active = true;
156 struct dc_link *link = NULL;
157
158 if (stream == NULL)
159 return false;
160
161 link = stream->link;
162
163 if (link) {
164 link->dc->link_srv->edp_setup_replay(link, stream);
165 link->dc->link_srv->edp_set_coasting_vtotal(link, stream->timing.v_total, 0);
166 DRM_DEBUG_DRIVER("Enabling replay...\n");
167 link->dc->link_srv->edp_set_replay_allow_active(link, &replay_active, wait, false, NULL);
168 return true;
169 }
170
171 return false;
172}
173
174/*
175 * amdgpu_dm_replay_disable() - disable replay f/w
176 * @stream: stream state
177 *
178 * Return: true if success
179 */
180bool amdgpu_dm_replay_disable(struct dc_stream_state *stream)
181{
182 bool replay_active = false;
183 struct dc_link *link = NULL;
184
185 if (stream == NULL)
186 return false;
187
188 link = stream->link;
189
190 if (link) {
191 DRM_DEBUG_DRIVER("Disabling replay...\n");
192 link->dc->link_srv->edp_set_replay_allow_active(stream->link, &replay_active, true, false, NULL);
193 return true;
194 }
195
196 return false;
197}
198
199/*
200 * amdgpu_dm_replay_disable_all() - disable replay f/w
201 * if replay is enabled on any stream
202 *
203 * Return: true if success
204 */
205bool amdgpu_dm_replay_disable_all(struct amdgpu_display_manager *dm)
206{
207 DRM_DEBUG_DRIVER("Disabling replay if replay is enabled on any stream\n");
208 return dc_set_replay_allow_active(dc: dm->dc, active: false);
209}
210

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