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 /* 157 * The link DMA channel would be invalidated for running 158 * streams but not for streams that were in the PAUSED 159 * state during suspend. So invalidate it here before setting 160 * the dai config in the DSP. 161 */ 162 if (config->type == SOF_DAI_INTEL_HDA) 163 config->hda.link_dma_ch = DMA_CHAN_INVALID; 164 165 ret = sof_ipc_tx_message(sdev->ipc, 166 config->hdr.cmd, config, 167 config->hdr.size, 168 &reply, sizeof(reply)); 169 170 if (ret < 0) { 171 dev_err(sdev->dev, 172 "error: failed to set dai config for %s\n", 173 dai->name); 174 175 return ret; 176 } 177 } 178 179 /* complete pipeline */ 180 list_for_each_entry(swidget, &sdev->widget_list, list) { 181 switch (swidget->id) { 182 case snd_soc_dapm_scheduler: 183 swidget->complete = 184 snd_sof_complete_pipeline(sdev, swidget); 185 break; 186 default: 187 break; 188 } 189 } 190 191 /* restore pipeline kcontrols */ 192 ret = sof_restore_kcontrols(sdev); 193 if (ret < 0) 194 dev_err(sdev->dev, 195 "error: restoring kcontrols after resume\n"); 196 197 return ret; 198 } 199 200 static int sof_send_pm_ipc(struct snd_sof_dev *sdev, int cmd) 201 { 202 struct sof_ipc_pm_ctx pm_ctx; 203 struct sof_ipc_reply reply; 204 205 memset(&pm_ctx, 0, sizeof(pm_ctx)); 206 207 /* configure ctx save ipc message */ 208 pm_ctx.hdr.size = sizeof(pm_ctx); 209 pm_ctx.hdr.cmd = SOF_IPC_GLB_PM_MSG | cmd; 210 211 /* send ctx save ipc to dsp */ 212 return sof_ipc_tx_message(sdev->ipc, pm_ctx.hdr.cmd, &pm_ctx, 213 sizeof(pm_ctx), &reply, sizeof(reply)); 214 } 215 216 static int sof_set_hw_params_upon_resume(struct snd_sof_dev *sdev) 217 { 218 struct snd_pcm_substream *substream; 219 struct snd_sof_pcm *spcm; 220 snd_pcm_state_t state; 221 int dir; 222 223 /* 224 * SOF requires hw_params to be set-up internally upon resume. 225 * So, set the flag to indicate this for those streams that 226 * have been suspended. 227 */ 228 list_for_each_entry(spcm, &sdev->pcm_list, list) { 229 for (dir = 0; dir <= SNDRV_PCM_STREAM_CAPTURE; dir++) { 230 substream = spcm->stream[dir].substream; 231 if (!substream || !substream->runtime) 232 continue; 233 234 state = substream->runtime->status->state; 235 if (state == SNDRV_PCM_STATE_SUSPENDED) 236 spcm->hw_params_upon_resume[dir] = 1; 237 } 238 } 239 240 /* set internal flag for BE */ 241 return snd_sof_dsp_hw_params_upon_resume(sdev); 242 } 243 244 #if IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG_ENABLE_DEBUGFS_CACHE) 245 static void sof_cache_debugfs(struct snd_sof_dev *sdev) 246 { 247 struct snd_sof_dfsentry *dfse; 248 249 list_for_each_entry(dfse, &sdev->dfsentry_list, list) { 250 251 /* nothing to do if debugfs buffer is not IO mem */ 252 if (dfse->type == SOF_DFSENTRY_TYPE_BUF) 253 continue; 254 255 /* cache memory that is only accessible in D0 */ 256 if (dfse->access_type == SOF_DEBUGFS_ACCESS_D0_ONLY) 257 memcpy_fromio(dfse->cache_buf, dfse->io_mem, 258 dfse->size); 259 } 260 } 261 #endif 262 263 static int sof_resume(struct device *dev, bool runtime_resume) 264 { 265 struct snd_sof_dev *sdev = dev_get_drvdata(dev); 266 int ret; 267 268 /* do nothing if dsp resume callbacks are not set */ 269 if (!sof_ops(sdev)->resume || !sof_ops(sdev)->runtime_resume) 270 return 0; 271 272 /* 273 * if the runtime_resume flag is set, call the runtime_resume routine 274 * or else call the system resume routine 275 */ 276 if (runtime_resume) 277 ret = snd_sof_dsp_runtime_resume(sdev); 278 else 279 ret = snd_sof_dsp_resume(sdev); 280 if (ret < 0) { 281 dev_err(sdev->dev, 282 "error: failed to power up DSP after resume\n"); 283 return ret; 284 } 285 286 /* load the firmware */ 287 ret = snd_sof_load_firmware(sdev); 288 if (ret < 0) { 289 dev_err(sdev->dev, 290 "error: failed to load DSP firmware after resume %d\n", 291 ret); 292 return ret; 293 } 294 295 /* boot the firmware */ 296 ret = snd_sof_run_firmware(sdev); 297 if (ret < 0) { 298 dev_err(sdev->dev, 299 "error: failed to boot DSP firmware after resume %d\n", 300 ret); 301 return ret; 302 } 303 304 /* resume DMA trace, only need send ipc */ 305 ret = snd_sof_init_trace_ipc(sdev); 306 if (ret < 0) { 307 /* non fatal */ 308 dev_warn(sdev->dev, 309 "warning: failed to init trace after resume %d\n", 310 ret); 311 } 312 313 /* restore pipelines */ 314 ret = sof_restore_pipelines(sdev); 315 if (ret < 0) { 316 dev_err(sdev->dev, 317 "error: failed to restore pipeline after resume %d\n", 318 ret); 319 return ret; 320 } 321 322 /* notify DSP of system resume */ 323 ret = sof_send_pm_ipc(sdev, SOF_IPC_PM_CTX_RESTORE); 324 if (ret < 0) 325 dev_err(sdev->dev, 326 "error: ctx_restore ipc error during resume %d\n", 327 ret); 328 329 return ret; 330 } 331 332 static int sof_suspend(struct device *dev, bool runtime_suspend) 333 { 334 struct snd_sof_dev *sdev = dev_get_drvdata(dev); 335 int ret; 336 337 /* do nothing if dsp suspend callback is not set */ 338 if (!sof_ops(sdev)->suspend) 339 return 0; 340 341 /* release trace */ 342 snd_sof_release_trace(sdev); 343 344 /* set restore_stream for all streams during system suspend */ 345 if (!runtime_suspend) { 346 ret = sof_set_hw_params_upon_resume(sdev); 347 if (ret < 0) { 348 dev_err(sdev->dev, 349 "error: setting hw_params flag during suspend %d\n", 350 ret); 351 return ret; 352 } 353 } 354 355 #if IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG_ENABLE_DEBUGFS_CACHE) 356 /* cache debugfs contents during runtime suspend */ 357 if (runtime_suspend) 358 sof_cache_debugfs(sdev); 359 #endif 360 /* notify DSP of upcoming power down */ 361 ret = sof_send_pm_ipc(sdev, SOF_IPC_PM_CTX_SAVE); 362 if (ret == -EBUSY || ret == -EAGAIN) { 363 /* 364 * runtime PM has logic to handle -EBUSY/-EAGAIN so 365 * pass these errors up 366 */ 367 dev_err(sdev->dev, 368 "error: ctx_save ipc error during suspend %d\n", 369 ret); 370 return ret; 371 } else if (ret < 0) { 372 /* FW in unexpected state, continue to power down */ 373 dev_warn(sdev->dev, 374 "ctx_save ipc error %d, proceeding with suspend\n", 375 ret); 376 } 377 378 /* power down all DSP cores */ 379 if (runtime_suspend) 380 ret = snd_sof_dsp_runtime_suspend(sdev, 0); 381 else 382 ret = snd_sof_dsp_suspend(sdev, 0); 383 if (ret < 0) 384 dev_err(sdev->dev, 385 "error: failed to power down DSP during suspend %d\n", 386 ret); 387 388 return ret; 389 } 390 391 int snd_sof_runtime_suspend(struct device *dev) 392 { 393 return sof_suspend(dev, true); 394 } 395 EXPORT_SYMBOL(snd_sof_runtime_suspend); 396 397 int snd_sof_runtime_idle(struct device *dev) 398 { 399 struct snd_sof_dev *sdev = dev_get_drvdata(dev); 400 401 return snd_sof_dsp_runtime_idle(sdev); 402 } 403 EXPORT_SYMBOL(snd_sof_runtime_idle); 404 405 int snd_sof_runtime_resume(struct device *dev) 406 { 407 return sof_resume(dev, true); 408 } 409 EXPORT_SYMBOL(snd_sof_runtime_resume); 410 411 int snd_sof_resume(struct device *dev) 412 { 413 return sof_resume(dev, false); 414 } 415 EXPORT_SYMBOL(snd_sof_resume); 416 417 int snd_sof_suspend(struct device *dev) 418 { 419 return sof_suspend(dev, false); 420 } 421 EXPORT_SYMBOL(snd_sof_suspend); 422