1 /* 2 * Copyright 2021 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_psr.h" 27 #include "dc.h" 28 #include "dm_helpers.h" 29 #include "amdgpu_dm.h" 30 #include "modules/power/power_helpers.h" 31 32 static bool link_supports_psrsu(struct dc_link *link) 33 { 34 struct dc *dc = link->ctx->dc; 35 36 if (!dc->caps.dmcub_support) 37 return false; 38 39 if (dc->ctx->dce_version < DCN_VERSION_3_1) 40 return false; 41 42 if (!is_psr_su_specific_panel(link)) 43 return false; 44 45 if (!link->dpcd_caps.alpm_caps.bits.AUX_WAKE_ALPM_CAP || 46 !link->dpcd_caps.psr_info.psr_dpcd_caps.bits.Y_COORDINATE_REQUIRED) 47 return false; 48 49 if (link->dpcd_caps.psr_info.psr_dpcd_caps.bits.SU_GRANULARITY_REQUIRED && 50 !link->dpcd_caps.psr_info.psr2_su_y_granularity_cap) 51 return false; 52 53 return true; 54 } 55 56 /* 57 * amdgpu_dm_set_psr_caps() - set link psr capabilities 58 * @link: link 59 * 60 */ 61 void amdgpu_dm_set_psr_caps(struct dc_link *link) 62 { 63 if (!(link->connector_signal & SIGNAL_TYPE_EDP)) 64 return; 65 66 if (link->type == dc_connection_none) 67 return; 68 69 if (link->dpcd_caps.psr_info.psr_version == 0) { 70 link->psr_settings.psr_version = DC_PSR_VERSION_UNSUPPORTED; 71 link->psr_settings.psr_feature_enabled = false; 72 73 } else { 74 if (link_supports_psrsu(link)) 75 link->psr_settings.psr_version = DC_PSR_VERSION_SU_1; 76 else 77 link->psr_settings.psr_version = DC_PSR_VERSION_1; 78 79 link->psr_settings.psr_feature_enabled = true; 80 } 81 82 DRM_INFO("PSR support %d, DC PSR ver %d, sink PSR ver %d\n", 83 link->psr_settings.psr_feature_enabled, 84 link->psr_settings.psr_version, 85 link->dpcd_caps.psr_info.psr_version); 86 87 } 88 89 /* 90 * amdgpu_dm_link_setup_psr() - configure psr link 91 * @stream: stream state 92 * 93 * Return: true if success 94 */ 95 bool amdgpu_dm_link_setup_psr(struct dc_stream_state *stream) 96 { 97 struct dc_link *link = NULL; 98 struct psr_config psr_config = {0}; 99 struct psr_context psr_context = {0}; 100 struct dc *dc = NULL; 101 bool ret = false; 102 103 if (stream == NULL) 104 return false; 105 106 link = stream->link; 107 dc = link->ctx->dc; 108 109 if (link->psr_settings.psr_version != DC_PSR_VERSION_UNSUPPORTED) { 110 mod_power_calc_psr_configs(&psr_config, link, stream); 111 112 /* linux DM specific updating for psr config fields */ 113 psr_config.allow_smu_optimizations = 114 (amdgpu_dc_feature_mask & DC_PSR_ALLOW_SMU_OPT) && 115 mod_power_only_edp(dc->current_state, stream); 116 psr_config.allow_multi_disp_optimizations = 117 (amdgpu_dc_feature_mask & DC_PSR_ALLOW_MULTI_DISP_OPT); 118 119 ret = dc_link_setup_psr(link, stream, &psr_config, &psr_context); 120 121 } 122 DRM_DEBUG_DRIVER("PSR link: %d\n", link->psr_settings.psr_feature_enabled); 123 124 return ret; 125 } 126 127 /* 128 * amdgpu_dm_psr_enable() - enable psr f/w 129 * @stream: stream state 130 * 131 * Return: true if success 132 */ 133 bool amdgpu_dm_psr_enable(struct dc_stream_state *stream) 134 { 135 struct dc_link *link = stream->link; 136 unsigned int vsync_rate_hz = 0; 137 struct dc_static_screen_params params = {0}; 138 /* Calculate number of static frames before generating interrupt to 139 * enter PSR. 140 */ 141 // Init fail safe of 2 frames static 142 unsigned int num_frames_static = 2; 143 unsigned int power_opt = 0; 144 bool psr_enable = true; 145 146 DRM_DEBUG_DRIVER("Enabling psr...\n"); 147 148 vsync_rate_hz = div64_u64(div64_u64(( 149 stream->timing.pix_clk_100hz * 100), 150 stream->timing.v_total), 151 stream->timing.h_total); 152 153 /* Round up 154 * Calculate number of frames such that at least 30 ms of time has 155 * passed. 156 */ 157 if (vsync_rate_hz != 0) { 158 unsigned int frame_time_microsec = 1000000 / vsync_rate_hz; 159 num_frames_static = (30000 / frame_time_microsec) + 1; 160 } 161 162 params.triggers.cursor_update = true; 163 params.triggers.overlay_update = true; 164 params.triggers.surface_update = true; 165 params.num_frames = num_frames_static; 166 167 dc_stream_set_static_screen_params(link->ctx->dc, 168 &stream, 1, 169 ¶ms); 170 171 power_opt |= psr_power_opt_z10_static_screen; 172 173 return dc_link_set_psr_allow_active(link, &psr_enable, false, false, &power_opt); 174 } 175 176 /* 177 * amdgpu_dm_psr_disable() - disable psr f/w 178 * @stream: stream state 179 * 180 * Return: true if success 181 */ 182 bool amdgpu_dm_psr_disable(struct dc_stream_state *stream) 183 { 184 unsigned int power_opt = 0; 185 bool psr_enable = false; 186 187 DRM_DEBUG_DRIVER("Disabling psr...\n"); 188 189 return dc_link_set_psr_allow_active(stream->link, &psr_enable, true, false, &power_opt); 190 } 191 192 /* 193 * amdgpu_dm_psr_disable() - disable psr f/w 194 * if psr is enabled on any stream 195 * 196 * Return: true if success 197 */ 198 bool amdgpu_dm_psr_disable_all(struct amdgpu_display_manager *dm) 199 { 200 DRM_DEBUG_DRIVER("Disabling psr if psr is enabled on any stream\n"); 201 return dc_set_psr_allow_active(dm->dc, false); 202 } 203 204