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 */
link_supports_replay(struct dc_link * link,struct amdgpu_dm_connector * aconnector)40 static 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 return true;
64 }
65
66 /*
67 * amdgpu_dm_setup_replay() - setup replay configuration
68 * @link: link
69 * @aconnector: aconnector
70 *
71 */
amdgpu_dm_setup_replay(struct dc_link * link,struct amdgpu_dm_connector * aconnector)72 bool amdgpu_dm_setup_replay(struct dc_link *link, struct amdgpu_dm_connector *aconnector)
73 {
74 struct replay_config pr_config;
75 union replay_debug_flags *debug_flags = NULL;
76
77 // For eDP, if Replay is supported, return true to skip checks
78 if (link->replay_settings.config.replay_supported)
79 return true;
80
81 if (!dc_is_embedded_signal(link->connector_signal))
82 return false;
83
84 if (link->panel_config.psr.disallow_replay)
85 return false;
86
87 if (!link_supports_replay(link, aconnector))
88 return false;
89
90 // Mark Replay is supported in link and update related attributes
91 pr_config.replay_supported = true;
92 pr_config.replay_power_opt_supported = 0;
93 pr_config.replay_enable_option |= pr_enable_option_static_screen;
94 pr_config.replay_timing_sync_supported = aconnector->max_vfreq >= 2 * aconnector->min_vfreq ? true : false;
95
96 if (!pr_config.replay_timing_sync_supported)
97 pr_config.replay_enable_option &= ~pr_enable_option_general_ui;
98
99 debug_flags = (union replay_debug_flags *)&pr_config.debug_flags;
100 debug_flags->u32All = 0;
101 debug_flags->bitfields.visual_confirm =
102 link->ctx->dc->debug.visual_confirm == VISUAL_CONFIRM_REPLAY ? true : false;
103
104 link->replay_settings.replay_feature_enabled = true;
105
106 init_replay_config(link, &pr_config);
107
108 return true;
109 }
110
111
112 /*
113 * amdgpu_dm_replay_enable() - enable replay f/w
114 * @stream: stream state
115 *
116 * Return: true if success
117 */
amdgpu_dm_replay_enable(struct dc_stream_state * stream,bool wait)118 bool amdgpu_dm_replay_enable(struct dc_stream_state *stream, bool wait)
119 {
120 uint64_t state;
121 unsigned int retry_count;
122 bool replay_active = true;
123 const unsigned int max_retry = 1000;
124 bool force_static = true;
125 struct dc_link *link = NULL;
126
127
128 if (stream == NULL)
129 return false;
130
131 link = stream->link;
132
133 if (link == NULL)
134 return false;
135
136 link->dc->link_srv->edp_setup_replay(link, stream);
137
138 link->dc->link_srv->edp_set_replay_allow_active(link, NULL, false, false, NULL);
139
140 link->dc->link_srv->edp_set_replay_allow_active(link, &replay_active, false, true, NULL);
141
142 if (wait == true) {
143
144 for (retry_count = 0; retry_count <= max_retry; retry_count++) {
145 dc_link_get_replay_state(link, &state);
146 if (replay_active) {
147 if (state != REPLAY_STATE_0 &&
148 (!force_static || state == REPLAY_STATE_3))
149 break;
150 } else {
151 if (state == REPLAY_STATE_0)
152 break;
153 }
154 udelay(500);
155 }
156
157 /* assert if max retry hit */
158 if (retry_count >= max_retry)
159 ASSERT(0);
160 } else {
161 /* To-do: Add trace log */
162 }
163
164 return true;
165 }
166
167 /*
168 * amdgpu_dm_replay_disable() - disable replay f/w
169 * @stream: stream state
170 *
171 * Return: true if success
172 */
amdgpu_dm_replay_disable(struct dc_stream_state * stream)173 bool amdgpu_dm_replay_disable(struct dc_stream_state *stream)
174 {
175
176 if (stream->link) {
177 DRM_DEBUG_DRIVER("Disabling replay...\n");
178 stream->link->dc->link_srv->edp_set_replay_allow_active(stream->link, NULL, false, false, NULL);
179 return true;
180 }
181
182 return false;
183 }
184