1 // SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) 2 // 3 // This file is provided under a dual BSD/GPLv2 license. When using or 4 // redistributing this file, you may do so under either license. 5 // 6 // Copyright(c) 2018 Intel Corporation. All rights reserved. 7 // 8 // Author: Liam Girdwood <liam.r.girdwood@linux.intel.com> 9 // 10 11 #include "ops.h" 12 #include "sof-priv.h" 13 14 static int sof_restore_kcontrols(struct snd_sof_dev *sdev) 15 { 16 struct snd_sof_control *scontrol; 17 int ipc_cmd, ctrl_type; 18 int ret = 0; 19 20 /* restore kcontrol values */ 21 list_for_each_entry(scontrol, &sdev->kcontrol_list, list) { 22 /* reset readback offset for scontrol after resuming */ 23 scontrol->readback_offset = 0; 24 25 /* notify DSP of kcontrol values */ 26 switch (scontrol->cmd) { 27 case SOF_CTRL_CMD_VOLUME: 28 case SOF_CTRL_CMD_ENUM: 29 case SOF_CTRL_CMD_SWITCH: 30 ipc_cmd = SOF_IPC_COMP_SET_VALUE; 31 ctrl_type = SOF_CTRL_TYPE_VALUE_CHAN_SET; 32 ret = snd_sof_ipc_set_get_comp_data(sdev->ipc, scontrol, 33 ipc_cmd, ctrl_type, 34 scontrol->cmd, 35 true); 36 break; 37 case SOF_CTRL_CMD_BINARY: 38 ipc_cmd = SOF_IPC_COMP_SET_DATA; 39 ctrl_type = SOF_CTRL_TYPE_DATA_SET; 40 ret = snd_sof_ipc_set_get_comp_data(sdev->ipc, scontrol, 41 ipc_cmd, ctrl_type, 42 scontrol->cmd, 43 true); 44 break; 45 46 default: 47 break; 48 } 49 50 if (ret < 0) { 51 dev_err(sdev->dev, 52 "error: failed kcontrol value set for widget: %d\n", 53 scontrol->comp_id); 54 55 return ret; 56 } 57 } 58 59 return 0; 60 } 61 62 static int sof_restore_pipelines(struct snd_sof_dev *sdev) 63 { 64 struct snd_sof_widget *swidget; 65 struct snd_sof_route *sroute; 66 struct sof_ipc_pipe_new *pipeline; 67 struct snd_sof_dai *dai; 68 struct sof_ipc_comp_dai *comp_dai; 69 struct sof_ipc_cmd_hdr *hdr; 70 int ret; 71 72 /* restore pipeline components */ 73 list_for_each_entry_reverse(swidget, &sdev->widget_list, list) { 74 struct sof_ipc_comp_reply r; 75 76 /* skip if there is no private data */ 77 if (!swidget->private) 78 continue; 79 80 switch (swidget->id) { 81 case snd_soc_dapm_dai_in: 82 case snd_soc_dapm_dai_out: 83 dai = swidget->private; 84 comp_dai = &dai->comp_dai; 85 ret = sof_ipc_tx_message(sdev->ipc, 86 comp_dai->comp.hdr.cmd, 87 comp_dai, sizeof(*comp_dai), 88 &r, sizeof(r)); 89 break; 90 case snd_soc_dapm_scheduler: 91 92 /* 93 * During suspend, all DSP cores are powered off. 94 * Therefore upon resume, create the pipeline comp 95 * and power up the core that the pipeline is 96 * scheduled on. 97 */ 98 pipeline = swidget->private; 99 ret = sof_load_pipeline_ipc(sdev, pipeline, &r); 100 break; 101 default: 102 hdr = swidget->private; 103 ret = sof_ipc_tx_message(sdev->ipc, hdr->cmd, 104 swidget->private, hdr->size, 105 &r, sizeof(r)); 106 break; 107 } 108 if (ret < 0) { 109 dev_err(sdev->dev, 110 "error: failed to load widget type %d with ID: %d\n", 111 swidget->widget->id, swidget->comp_id); 112 113 return ret; 114 } 115 } 116 117 /* restore pipeline connections */ 118 list_for_each_entry_reverse(sroute, &sdev->route_list, list) { 119 struct sof_ipc_pipe_comp_connect *connect; 120 struct sof_ipc_reply reply; 121 122 /* skip if there's no private data */ 123 if (!sroute->private) 124 continue; 125 126 connect = sroute->private; 127 128 /* send ipc */ 129 ret = sof_ipc_tx_message(sdev->ipc, 130 connect->hdr.cmd, 131 connect, sizeof(*connect), 132 &reply, sizeof(reply)); 133 if (ret < 0) { 134 dev_err(sdev->dev, 135 "error: failed to load route sink %s control %s source %s\n", 136 sroute->route->sink, 137 sroute->route->control ? sroute->route->control 138 : "none", 139 sroute->route->source); 140 141 return ret; 142 } 143 } 144 145 /* restore dai links */ 146 list_for_each_entry_reverse(dai, &sdev->dai_list, list) { 147 struct sof_ipc_reply reply; 148 struct sof_ipc_dai_config *config = dai->dai_config; 149 150 if (!config) { 151 dev_err(sdev->dev, "error: no config for DAI %s\n", 152 dai->name); 153 continue; 154 } 155 156 ret = sof_ipc_tx_message(sdev->ipc, 157 config->hdr.cmd, config, 158 config->hdr.size, 159 &reply, sizeof(reply)); 160 161 if (ret < 0) { 162 dev_err(sdev->dev, 163 "error: failed to set dai config for %s\n", 164 dai->name); 165 166 return ret; 167 } 168 } 169 170 /* complete pipeline */ 171 list_for_each_entry(swidget, &sdev->widget_list, list) { 172 switch (swidget->id) { 173 case snd_soc_dapm_scheduler: 174 swidget->complete = 175 snd_sof_complete_pipeline(sdev, swidget); 176 break; 177 default: 178 break; 179 } 180 } 181 182 /* restore pipeline kcontrols */ 183 ret = sof_restore_kcontrols(sdev); 184 if (ret < 0) 185 dev_err(sdev->dev, 186 "error: restoring kcontrols after resume\n"); 187 188 return ret; 189 } 190 191 static int sof_send_pm_ipc(struct snd_sof_dev *sdev, int cmd) 192 { 193 struct sof_ipc_pm_ctx pm_ctx; 194 struct sof_ipc_reply reply; 195 196 memset(&pm_ctx, 0, sizeof(pm_ctx)); 197 198 /* configure ctx save ipc message */ 199 pm_ctx.hdr.size = sizeof(pm_ctx); 200 pm_ctx.hdr.cmd = SOF_IPC_GLB_PM_MSG | cmd; 201 202 /* send ctx save ipc to dsp */ 203 return sof_ipc_tx_message(sdev->ipc, pm_ctx.hdr.cmd, &pm_ctx, 204 sizeof(pm_ctx), &reply, sizeof(reply)); 205 } 206 207 static void sof_set_hw_params_upon_resume(struct snd_sof_dev *sdev) 208 { 209 struct snd_pcm_substream *substream; 210 struct snd_sof_pcm *spcm; 211 snd_pcm_state_t state; 212 int dir; 213 214 /* 215 * SOF requires hw_params to be set-up internally upon resume. 216 * So, set the flag to indicate this for those streams that 217 * have been suspended. 218 */ 219 list_for_each_entry(spcm, &sdev->pcm_list, list) { 220 for (dir = 0; dir <= SNDRV_PCM_STREAM_CAPTURE; dir++) { 221 substream = spcm->stream[dir].substream; 222 if (!substream || !substream->runtime) 223 continue; 224 225 state = substream->runtime->status->state; 226 if (state == SNDRV_PCM_STATE_SUSPENDED) 227 spcm->hw_params_upon_resume[dir] = 1; 228 } 229 } 230 } 231 232 #if IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG_ENABLE_DEBUGFS_CACHE) 233 static void sof_cache_debugfs(struct snd_sof_dev *sdev) 234 { 235 struct snd_sof_dfsentry *dfse; 236 237 list_for_each_entry(dfse, &sdev->dfsentry_list, list) { 238 239 /* nothing to do if debugfs buffer is not IO mem */ 240 if (dfse->type == SOF_DFSENTRY_TYPE_BUF) 241 continue; 242 243 /* cache memory that is only accessible in D0 */ 244 if (dfse->access_type == SOF_DEBUGFS_ACCESS_D0_ONLY) 245 memcpy_fromio(dfse->cache_buf, dfse->io_mem, 246 dfse->size); 247 } 248 } 249 #endif 250 251 static int sof_resume(struct device *dev, bool runtime_resume) 252 { 253 struct snd_sof_dev *sdev = dev_get_drvdata(dev); 254 int ret; 255 256 /* do nothing if dsp resume callbacks are not set */ 257 if (!sof_ops(sdev)->resume || !sof_ops(sdev)->runtime_resume) 258 return 0; 259 260 /* 261 * if the runtime_resume flag is set, call the runtime_resume routine 262 * or else call the system resume routine 263 */ 264 if (runtime_resume) 265 ret = snd_sof_dsp_runtime_resume(sdev); 266 else 267 ret = snd_sof_dsp_resume(sdev); 268 if (ret < 0) { 269 dev_err(sdev->dev, 270 "error: failed to power up DSP after resume\n"); 271 return ret; 272 } 273 274 /* load the firmware */ 275 ret = snd_sof_load_firmware(sdev); 276 if (ret < 0) { 277 dev_err(sdev->dev, 278 "error: failed to load DSP firmware after resume %d\n", 279 ret); 280 return ret; 281 } 282 283 /* boot the firmware */ 284 ret = snd_sof_run_firmware(sdev); 285 if (ret < 0) { 286 dev_err(sdev->dev, 287 "error: failed to boot DSP firmware after resume %d\n", 288 ret); 289 return ret; 290 } 291 292 /* resume DMA trace, only need send ipc */ 293 ret = snd_sof_init_trace_ipc(sdev); 294 if (ret < 0) { 295 /* non fatal */ 296 dev_warn(sdev->dev, 297 "warning: failed to init trace after resume %d\n", 298 ret); 299 } 300 301 /* restore pipelines */ 302 ret = sof_restore_pipelines(sdev); 303 if (ret < 0) { 304 dev_err(sdev->dev, 305 "error: failed to restore pipeline after resume %d\n", 306 ret); 307 return ret; 308 } 309 310 /* notify DSP of system resume */ 311 ret = sof_send_pm_ipc(sdev, SOF_IPC_PM_CTX_RESTORE); 312 if (ret < 0) 313 dev_err(sdev->dev, 314 "error: ctx_restore ipc error during resume %d\n", 315 ret); 316 317 return ret; 318 } 319 320 static int sof_suspend(struct device *dev, bool runtime_suspend) 321 { 322 struct snd_sof_dev *sdev = dev_get_drvdata(dev); 323 int ret; 324 325 /* do nothing if dsp suspend callback is not set */ 326 if (!sof_ops(sdev)->suspend) 327 return 0; 328 329 /* release trace */ 330 snd_sof_release_trace(sdev); 331 332 /* set restore_stream for all streams during system suspend */ 333 if (!runtime_suspend) 334 sof_set_hw_params_upon_resume(sdev); 335 336 #if IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG_ENABLE_DEBUGFS_CACHE) 337 /* cache debugfs contents during runtime suspend */ 338 if (runtime_suspend) 339 sof_cache_debugfs(sdev); 340 #endif 341 /* notify DSP of upcoming power down */ 342 ret = sof_send_pm_ipc(sdev, SOF_IPC_PM_CTX_SAVE); 343 if (ret < 0) { 344 dev_err(sdev->dev, 345 "error: ctx_save ipc error during suspend %d\n", 346 ret); 347 return ret; 348 } 349 350 /* power down all DSP cores */ 351 if (runtime_suspend) 352 ret = snd_sof_dsp_runtime_suspend(sdev, 0); 353 else 354 ret = snd_sof_dsp_suspend(sdev, 0); 355 if (ret < 0) 356 dev_err(sdev->dev, 357 "error: failed to power down DSP during suspend %d\n", 358 ret); 359 360 return ret; 361 } 362 363 int snd_sof_runtime_suspend(struct device *dev) 364 { 365 return sof_suspend(dev, true); 366 } 367 EXPORT_SYMBOL(snd_sof_runtime_suspend); 368 369 int snd_sof_runtime_resume(struct device *dev) 370 { 371 return sof_resume(dev, true); 372 } 373 EXPORT_SYMBOL(snd_sof_runtime_resume); 374 375 int snd_sof_resume(struct device *dev) 376 { 377 return sof_resume(dev, false); 378 } 379 EXPORT_SYMBOL(snd_sof_resume); 380 381 int snd_sof_suspend(struct device *dev) 382 { 383 return sof_suspend(dev, false); 384 } 385 EXPORT_SYMBOL(snd_sof_suspend); 386