1 // SPDX-License-Identifier: (GPL-2.0-only 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 // Authors: Liam Girdwood <liam.r.girdwood@linux.intel.com> 9 // Ranjani Sridharan <ranjani.sridharan@linux.intel.com> 10 // Rander Wang <rander.wang@intel.com> 11 // Keyon Jie <yang.jie@linux.intel.com> 12 // 13 14 /* 15 * Hardware interface for generic Intel audio DSP HDA IP 16 */ 17 18 #include <linux/module.h> 19 #include <sound/hdaudio_ext.h> 20 #include <sound/hda_register.h> 21 #include "../sof-audio.h" 22 #include "../ops.h" 23 #include "hda.h" 24 #include "hda-ipc.h" 25 26 static bool hda_enable_trace_D0I3_S0; 27 #if IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG) 28 module_param_named(enable_trace_D0I3_S0, hda_enable_trace_D0I3_S0, bool, 0444); 29 MODULE_PARM_DESC(enable_trace_D0I3_S0, 30 "SOF HDA enable trace when the DSP is in D0I3 in S0"); 31 #endif 32 33 /* 34 * DSP Core control. 35 */ 36 37 static int hda_dsp_core_reset_enter(struct snd_sof_dev *sdev, unsigned int core_mask) 38 { 39 u32 adspcs; 40 u32 reset; 41 int ret; 42 43 /* set reset bits for cores */ 44 reset = HDA_DSP_ADSPCS_CRST_MASK(core_mask); 45 snd_sof_dsp_update_bits_unlocked(sdev, HDA_DSP_BAR, 46 HDA_DSP_REG_ADSPCS, 47 reset, reset); 48 49 /* poll with timeout to check if operation successful */ 50 ret = snd_sof_dsp_read_poll_timeout(sdev, HDA_DSP_BAR, 51 HDA_DSP_REG_ADSPCS, adspcs, 52 ((adspcs & reset) == reset), 53 HDA_DSP_REG_POLL_INTERVAL_US, 54 HDA_DSP_RESET_TIMEOUT_US); 55 if (ret < 0) { 56 dev_err(sdev->dev, 57 "error: %s: timeout on HDA_DSP_REG_ADSPCS read\n", 58 __func__); 59 return ret; 60 } 61 62 /* has core entered reset ? */ 63 adspcs = snd_sof_dsp_read(sdev, HDA_DSP_BAR, 64 HDA_DSP_REG_ADSPCS); 65 if ((adspcs & HDA_DSP_ADSPCS_CRST_MASK(core_mask)) != 66 HDA_DSP_ADSPCS_CRST_MASK(core_mask)) { 67 dev_err(sdev->dev, 68 "error: reset enter failed: core_mask %x adspcs 0x%x\n", 69 core_mask, adspcs); 70 ret = -EIO; 71 } 72 73 return ret; 74 } 75 76 static int hda_dsp_core_reset_leave(struct snd_sof_dev *sdev, unsigned int core_mask) 77 { 78 unsigned int crst; 79 u32 adspcs; 80 int ret; 81 82 /* clear reset bits for cores */ 83 snd_sof_dsp_update_bits_unlocked(sdev, HDA_DSP_BAR, 84 HDA_DSP_REG_ADSPCS, 85 HDA_DSP_ADSPCS_CRST_MASK(core_mask), 86 0); 87 88 /* poll with timeout to check if operation successful */ 89 crst = HDA_DSP_ADSPCS_CRST_MASK(core_mask); 90 ret = snd_sof_dsp_read_poll_timeout(sdev, HDA_DSP_BAR, 91 HDA_DSP_REG_ADSPCS, adspcs, 92 !(adspcs & crst), 93 HDA_DSP_REG_POLL_INTERVAL_US, 94 HDA_DSP_RESET_TIMEOUT_US); 95 96 if (ret < 0) { 97 dev_err(sdev->dev, 98 "error: %s: timeout on HDA_DSP_REG_ADSPCS read\n", 99 __func__); 100 return ret; 101 } 102 103 /* has core left reset ? */ 104 adspcs = snd_sof_dsp_read(sdev, HDA_DSP_BAR, 105 HDA_DSP_REG_ADSPCS); 106 if ((adspcs & HDA_DSP_ADSPCS_CRST_MASK(core_mask)) != 0) { 107 dev_err(sdev->dev, 108 "error: reset leave failed: core_mask %x adspcs 0x%x\n", 109 core_mask, adspcs); 110 ret = -EIO; 111 } 112 113 return ret; 114 } 115 116 static int hda_dsp_core_stall_reset(struct snd_sof_dev *sdev, unsigned int core_mask) 117 { 118 /* stall core */ 119 snd_sof_dsp_update_bits_unlocked(sdev, HDA_DSP_BAR, 120 HDA_DSP_REG_ADSPCS, 121 HDA_DSP_ADSPCS_CSTALL_MASK(core_mask), 122 HDA_DSP_ADSPCS_CSTALL_MASK(core_mask)); 123 124 /* set reset state */ 125 return hda_dsp_core_reset_enter(sdev, core_mask); 126 } 127 128 static bool hda_dsp_core_is_enabled(struct snd_sof_dev *sdev, unsigned int core_mask) 129 { 130 int val; 131 bool is_enable; 132 133 val = snd_sof_dsp_read(sdev, HDA_DSP_BAR, HDA_DSP_REG_ADSPCS); 134 135 #define MASK_IS_EQUAL(v, m, field) ({ \ 136 u32 _m = field(m); \ 137 ((v) & _m) == _m; \ 138 }) 139 140 is_enable = MASK_IS_EQUAL(val, core_mask, HDA_DSP_ADSPCS_CPA_MASK) && 141 MASK_IS_EQUAL(val, core_mask, HDA_DSP_ADSPCS_SPA_MASK) && 142 !(val & HDA_DSP_ADSPCS_CRST_MASK(core_mask)) && 143 !(val & HDA_DSP_ADSPCS_CSTALL_MASK(core_mask)); 144 145 #undef MASK_IS_EQUAL 146 147 dev_dbg(sdev->dev, "DSP core(s) enabled? %d : core_mask %x\n", 148 is_enable, core_mask); 149 150 return is_enable; 151 } 152 153 int hda_dsp_core_run(struct snd_sof_dev *sdev, unsigned int core_mask) 154 { 155 int ret; 156 157 /* leave reset state */ 158 ret = hda_dsp_core_reset_leave(sdev, core_mask); 159 if (ret < 0) 160 return ret; 161 162 /* run core */ 163 dev_dbg(sdev->dev, "unstall/run core: core_mask = %x\n", core_mask); 164 snd_sof_dsp_update_bits_unlocked(sdev, HDA_DSP_BAR, 165 HDA_DSP_REG_ADSPCS, 166 HDA_DSP_ADSPCS_CSTALL_MASK(core_mask), 167 0); 168 169 /* is core now running ? */ 170 if (!hda_dsp_core_is_enabled(sdev, core_mask)) { 171 hda_dsp_core_stall_reset(sdev, core_mask); 172 dev_err(sdev->dev, "error: DSP start core failed: core_mask %x\n", 173 core_mask); 174 ret = -EIO; 175 } 176 177 return ret; 178 } 179 180 /* 181 * Power Management. 182 */ 183 184 int hda_dsp_core_power_up(struct snd_sof_dev *sdev, unsigned int core_mask) 185 { 186 struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata; 187 const struct sof_intel_dsp_desc *chip = hda->desc; 188 unsigned int cpa; 189 u32 adspcs; 190 int ret; 191 192 /* restrict core_mask to host managed cores mask */ 193 core_mask &= chip->host_managed_cores_mask; 194 /* return if core_mask is not valid */ 195 if (!core_mask) 196 return 0; 197 198 /* update bits */ 199 snd_sof_dsp_update_bits(sdev, HDA_DSP_BAR, HDA_DSP_REG_ADSPCS, 200 HDA_DSP_ADSPCS_SPA_MASK(core_mask), 201 HDA_DSP_ADSPCS_SPA_MASK(core_mask)); 202 203 /* poll with timeout to check if operation successful */ 204 cpa = HDA_DSP_ADSPCS_CPA_MASK(core_mask); 205 ret = snd_sof_dsp_read_poll_timeout(sdev, HDA_DSP_BAR, 206 HDA_DSP_REG_ADSPCS, adspcs, 207 (adspcs & cpa) == cpa, 208 HDA_DSP_REG_POLL_INTERVAL_US, 209 HDA_DSP_RESET_TIMEOUT_US); 210 if (ret < 0) { 211 dev_err(sdev->dev, 212 "error: %s: timeout on HDA_DSP_REG_ADSPCS read\n", 213 __func__); 214 return ret; 215 } 216 217 /* did core power up ? */ 218 adspcs = snd_sof_dsp_read(sdev, HDA_DSP_BAR, 219 HDA_DSP_REG_ADSPCS); 220 if ((adspcs & HDA_DSP_ADSPCS_CPA_MASK(core_mask)) != 221 HDA_DSP_ADSPCS_CPA_MASK(core_mask)) { 222 dev_err(sdev->dev, 223 "error: power up core failed core_mask %xadspcs 0x%x\n", 224 core_mask, adspcs); 225 ret = -EIO; 226 } 227 228 return ret; 229 } 230 231 static int hda_dsp_core_power_down(struct snd_sof_dev *sdev, unsigned int core_mask) 232 { 233 u32 adspcs; 234 int ret; 235 236 /* update bits */ 237 snd_sof_dsp_update_bits_unlocked(sdev, HDA_DSP_BAR, 238 HDA_DSP_REG_ADSPCS, 239 HDA_DSP_ADSPCS_SPA_MASK(core_mask), 0); 240 241 ret = snd_sof_dsp_read_poll_timeout(sdev, HDA_DSP_BAR, 242 HDA_DSP_REG_ADSPCS, adspcs, 243 !(adspcs & HDA_DSP_ADSPCS_CPA_MASK(core_mask)), 244 HDA_DSP_REG_POLL_INTERVAL_US, 245 HDA_DSP_PD_TIMEOUT * USEC_PER_MSEC); 246 if (ret < 0) 247 dev_err(sdev->dev, 248 "error: %s: timeout on HDA_DSP_REG_ADSPCS read\n", 249 __func__); 250 251 return ret; 252 } 253 254 int hda_dsp_enable_core(struct snd_sof_dev *sdev, unsigned int core_mask) 255 { 256 struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata; 257 const struct sof_intel_dsp_desc *chip = hda->desc; 258 int ret; 259 260 /* restrict core_mask to host managed cores mask */ 261 core_mask &= chip->host_managed_cores_mask; 262 263 /* return if core_mask is not valid or cores are already enabled */ 264 if (!core_mask || hda_dsp_core_is_enabled(sdev, core_mask)) 265 return 0; 266 267 /* power up */ 268 ret = hda_dsp_core_power_up(sdev, core_mask); 269 if (ret < 0) { 270 dev_err(sdev->dev, "error: dsp core power up failed: core_mask %x\n", 271 core_mask); 272 return ret; 273 } 274 275 return hda_dsp_core_run(sdev, core_mask); 276 } 277 278 int hda_dsp_core_reset_power_down(struct snd_sof_dev *sdev, 279 unsigned int core_mask) 280 { 281 struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata; 282 const struct sof_intel_dsp_desc *chip = hda->desc; 283 int ret; 284 285 /* restrict core_mask to host managed cores mask */ 286 core_mask &= chip->host_managed_cores_mask; 287 288 /* return if core_mask is not valid */ 289 if (!core_mask) 290 return 0; 291 292 /* place core in reset prior to power down */ 293 ret = hda_dsp_core_stall_reset(sdev, core_mask); 294 if (ret < 0) { 295 dev_err(sdev->dev, "error: dsp core reset failed: core_mask %x\n", 296 core_mask); 297 return ret; 298 } 299 300 /* power down core */ 301 ret = hda_dsp_core_power_down(sdev, core_mask); 302 if (ret < 0) { 303 dev_err(sdev->dev, "error: dsp core power down fail mask %x: %d\n", 304 core_mask, ret); 305 return ret; 306 } 307 308 /* make sure we are in OFF state */ 309 if (hda_dsp_core_is_enabled(sdev, core_mask)) { 310 dev_err(sdev->dev, "error: dsp core disable fail mask %x: %d\n", 311 core_mask, ret); 312 ret = -EIO; 313 } 314 315 return ret; 316 } 317 318 void hda_dsp_ipc_int_enable(struct snd_sof_dev *sdev) 319 { 320 struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata; 321 const struct sof_intel_dsp_desc *chip = hda->desc; 322 323 /* enable IPC DONE and BUSY interrupts */ 324 snd_sof_dsp_update_bits(sdev, HDA_DSP_BAR, chip->ipc_ctl, 325 HDA_DSP_REG_HIPCCTL_DONE | HDA_DSP_REG_HIPCCTL_BUSY, 326 HDA_DSP_REG_HIPCCTL_DONE | HDA_DSP_REG_HIPCCTL_BUSY); 327 328 /* enable IPC interrupt */ 329 snd_sof_dsp_update_bits(sdev, HDA_DSP_BAR, HDA_DSP_REG_ADSPIC, 330 HDA_DSP_ADSPIC_IPC, HDA_DSP_ADSPIC_IPC); 331 } 332 333 void hda_dsp_ipc_int_disable(struct snd_sof_dev *sdev) 334 { 335 struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata; 336 const struct sof_intel_dsp_desc *chip = hda->desc; 337 338 /* disable IPC interrupt */ 339 snd_sof_dsp_update_bits(sdev, HDA_DSP_BAR, HDA_DSP_REG_ADSPIC, 340 HDA_DSP_ADSPIC_IPC, 0); 341 342 /* disable IPC BUSY and DONE interrupt */ 343 snd_sof_dsp_update_bits(sdev, HDA_DSP_BAR, chip->ipc_ctl, 344 HDA_DSP_REG_HIPCCTL_BUSY | HDA_DSP_REG_HIPCCTL_DONE, 0); 345 } 346 347 static int hda_dsp_wait_d0i3c_done(struct snd_sof_dev *sdev) 348 { 349 struct hdac_bus *bus = sof_to_bus(sdev); 350 int retry = HDA_DSP_REG_POLL_RETRY_COUNT; 351 352 while (snd_hdac_chip_readb(bus, VS_D0I3C) & SOF_HDA_VS_D0I3C_CIP) { 353 if (!retry--) 354 return -ETIMEDOUT; 355 usleep_range(10, 15); 356 } 357 358 return 0; 359 } 360 361 static int hda_dsp_send_pm_gate_ipc(struct snd_sof_dev *sdev, u32 flags) 362 { 363 struct sof_ipc_pm_gate pm_gate; 364 struct sof_ipc_reply reply; 365 366 memset(&pm_gate, 0, sizeof(pm_gate)); 367 368 /* configure pm_gate ipc message */ 369 pm_gate.hdr.size = sizeof(pm_gate); 370 pm_gate.hdr.cmd = SOF_IPC_GLB_PM_MSG | SOF_IPC_PM_GATE; 371 pm_gate.flags = flags; 372 373 /* send pm_gate ipc to dsp */ 374 return sof_ipc_tx_message_no_pm(sdev->ipc, &pm_gate, sizeof(pm_gate), 375 &reply, sizeof(reply)); 376 } 377 378 static int hda_dsp_update_d0i3c_register(struct snd_sof_dev *sdev, u8 value) 379 { 380 struct hdac_bus *bus = sof_to_bus(sdev); 381 int ret; 382 383 /* Write to D0I3C after Command-In-Progress bit is cleared */ 384 ret = hda_dsp_wait_d0i3c_done(sdev); 385 if (ret < 0) { 386 dev_err(bus->dev, "CIP timeout before D0I3C update!\n"); 387 return ret; 388 } 389 390 /* Update D0I3C register */ 391 snd_hdac_chip_updateb(bus, VS_D0I3C, SOF_HDA_VS_D0I3C_I3, value); 392 393 /* Wait for cmd in progress to be cleared before exiting the function */ 394 ret = hda_dsp_wait_d0i3c_done(sdev); 395 if (ret < 0) { 396 dev_err(bus->dev, "CIP timeout after D0I3C update!\n"); 397 return ret; 398 } 399 400 dev_vdbg(bus->dev, "D0I3C updated, register = 0x%x\n", 401 snd_hdac_chip_readb(bus, VS_D0I3C)); 402 403 return 0; 404 } 405 406 static int hda_dsp_set_D0_state(struct snd_sof_dev *sdev, 407 const struct sof_dsp_power_state *target_state) 408 { 409 u32 flags = 0; 410 int ret; 411 u8 value = 0; 412 413 /* 414 * Sanity check for illegal state transitions 415 * The only allowed transitions are: 416 * 1. D3 -> D0I0 417 * 2. D0I0 -> D0I3 418 * 3. D0I3 -> D0I0 419 */ 420 switch (sdev->dsp_power_state.state) { 421 case SOF_DSP_PM_D0: 422 /* Follow the sequence below for D0 substate transitions */ 423 break; 424 case SOF_DSP_PM_D3: 425 /* Follow regular flow for D3 -> D0 transition */ 426 return 0; 427 default: 428 dev_err(sdev->dev, "error: transition from %d to %d not allowed\n", 429 sdev->dsp_power_state.state, target_state->state); 430 return -EINVAL; 431 } 432 433 /* Set flags and register value for D0 target substate */ 434 if (target_state->substate == SOF_HDA_DSP_PM_D0I3) { 435 value = SOF_HDA_VS_D0I3C_I3; 436 437 /* 438 * Trace DMA need to be disabled when the DSP enters 439 * D0I3 for S0Ix suspend, but it can be kept enabled 440 * when the DSP enters D0I3 while the system is in S0 441 * for debug purpose. 442 */ 443 if (!sdev->fw_trace_is_supported || 444 !hda_enable_trace_D0I3_S0 || 445 sdev->system_suspend_target != SOF_SUSPEND_NONE) 446 flags = HDA_PM_NO_DMA_TRACE; 447 } else { 448 /* prevent power gating in D0I0 */ 449 flags = HDA_PM_PPG; 450 } 451 452 /* update D0I3C register */ 453 ret = hda_dsp_update_d0i3c_register(sdev, value); 454 if (ret < 0) 455 return ret; 456 457 /* 458 * Notify the DSP of the state change. 459 * If this IPC fails, revert the D0I3C register update in order 460 * to prevent partial state change. 461 */ 462 ret = hda_dsp_send_pm_gate_ipc(sdev, flags); 463 if (ret < 0) { 464 dev_err(sdev->dev, 465 "error: PM_GATE ipc error %d\n", ret); 466 goto revert; 467 } 468 469 return ret; 470 471 revert: 472 /* fallback to the previous register value */ 473 value = value ? 0 : SOF_HDA_VS_D0I3C_I3; 474 475 /* 476 * This can fail but return the IPC error to signal that 477 * the state change failed. 478 */ 479 hda_dsp_update_d0i3c_register(sdev, value); 480 481 return ret; 482 } 483 484 /* helper to log DSP state */ 485 static void hda_dsp_state_log(struct snd_sof_dev *sdev) 486 { 487 switch (sdev->dsp_power_state.state) { 488 case SOF_DSP_PM_D0: 489 switch (sdev->dsp_power_state.substate) { 490 case SOF_HDA_DSP_PM_D0I0: 491 dev_dbg(sdev->dev, "Current DSP power state: D0I0\n"); 492 break; 493 case SOF_HDA_DSP_PM_D0I3: 494 dev_dbg(sdev->dev, "Current DSP power state: D0I3\n"); 495 break; 496 default: 497 dev_dbg(sdev->dev, "Unknown DSP D0 substate: %d\n", 498 sdev->dsp_power_state.substate); 499 break; 500 } 501 break; 502 case SOF_DSP_PM_D1: 503 dev_dbg(sdev->dev, "Current DSP power state: D1\n"); 504 break; 505 case SOF_DSP_PM_D2: 506 dev_dbg(sdev->dev, "Current DSP power state: D2\n"); 507 break; 508 case SOF_DSP_PM_D3: 509 dev_dbg(sdev->dev, "Current DSP power state: D3\n"); 510 break; 511 default: 512 dev_dbg(sdev->dev, "Unknown DSP power state: %d\n", 513 sdev->dsp_power_state.state); 514 break; 515 } 516 } 517 518 /* 519 * All DSP power state transitions are initiated by the driver. 520 * If the requested state change fails, the error is simply returned. 521 * Further state transitions are attempted only when the set_power_save() op 522 * is called again either because of a new IPC sent to the DSP or 523 * during system suspend/resume. 524 */ 525 int hda_dsp_set_power_state(struct snd_sof_dev *sdev, 526 const struct sof_dsp_power_state *target_state) 527 { 528 int ret = 0; 529 530 /* 531 * When the DSP is already in D0I3 and the target state is D0I3, 532 * it could be the case that the DSP is in D0I3 during S0 533 * and the system is suspending to S0Ix. Therefore, 534 * hda_dsp_set_D0_state() must be called to disable trace DMA 535 * by sending the PM_GATE IPC to the FW. 536 */ 537 if (target_state->substate == SOF_HDA_DSP_PM_D0I3 && 538 sdev->system_suspend_target == SOF_SUSPEND_S0IX) 539 goto set_state; 540 541 /* 542 * For all other cases, return without doing anything if 543 * the DSP is already in the target state. 544 */ 545 if (target_state->state == sdev->dsp_power_state.state && 546 target_state->substate == sdev->dsp_power_state.substate) 547 return 0; 548 549 set_state: 550 switch (target_state->state) { 551 case SOF_DSP_PM_D0: 552 ret = hda_dsp_set_D0_state(sdev, target_state); 553 break; 554 case SOF_DSP_PM_D3: 555 /* The only allowed transition is: D0I0 -> D3 */ 556 if (sdev->dsp_power_state.state == SOF_DSP_PM_D0 && 557 sdev->dsp_power_state.substate == SOF_HDA_DSP_PM_D0I0) 558 break; 559 560 dev_err(sdev->dev, 561 "error: transition from %d to %d not allowed\n", 562 sdev->dsp_power_state.state, target_state->state); 563 return -EINVAL; 564 default: 565 dev_err(sdev->dev, "error: target state unsupported %d\n", 566 target_state->state); 567 return -EINVAL; 568 } 569 if (ret < 0) { 570 dev_err(sdev->dev, 571 "failed to set requested target DSP state %d substate %d\n", 572 target_state->state, target_state->substate); 573 return ret; 574 } 575 576 sdev->dsp_power_state = *target_state; 577 hda_dsp_state_log(sdev); 578 return ret; 579 } 580 581 /* 582 * Audio DSP states may transform as below:- 583 * 584 * Opportunistic D0I3 in S0 585 * Runtime +---------------------+ Delayed D0i3 work timeout 586 * suspend | +--------------------+ 587 * +------------+ D0I0(active) | | 588 * | | <---------------+ | 589 * | +--------> | New IPC | | 590 * | |Runtime +--^--+---------^--+--+ (via mailbox) | | 591 * | |resume | | | | | | 592 * | | | | | | | | 593 * | | System| | | | | | 594 * | | resume| | S3/S0IX | | | | 595 * | | | | suspend | | S0IX | | 596 * | | | | | |suspend | | 597 * | | | | | | | | 598 * | | | | | | | | 599 * +-v---+-----------+--v-------+ | | +------+----v----+ 600 * | | | +-----------> | 601 * | D3 (suspended) | | | D0I3 | 602 * | | +--------------+ | 603 * | | System resume | | 604 * +----------------------------+ +----------------+ 605 * 606 * S0IX suspend: The DSP is in D0I3 if any D0I3-compatible streams 607 * ignored the suspend trigger. Otherwise the DSP 608 * is in D3. 609 */ 610 611 static int hda_suspend(struct snd_sof_dev *sdev, bool runtime_suspend) 612 { 613 struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata; 614 const struct sof_intel_dsp_desc *chip = hda->desc; 615 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA) 616 struct hdac_bus *bus = sof_to_bus(sdev); 617 #endif 618 int ret, j; 619 620 /* 621 * The memory used for IMR boot loses its content in deeper than S3 state 622 * We must not try IMR boot on next power up (as it will fail). 623 * 624 * In case of firmware crash or boot failure set the skip_imr_boot to true 625 * as well in order to try to re-load the firmware to do a 'cold' boot. 626 */ 627 if (sdev->system_suspend_target > SOF_SUSPEND_S3 || 628 sdev->fw_state == SOF_FW_CRASHED || 629 sdev->fw_state == SOF_FW_BOOT_FAILED) 630 hda->skip_imr_boot = true; 631 632 hda_sdw_int_enable(sdev, false); 633 634 /* disable IPC interrupts */ 635 hda_dsp_ipc_int_disable(sdev); 636 637 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA) 638 hda_codec_jack_wake_enable(sdev, runtime_suspend); 639 640 /* power down all hda link */ 641 snd_hdac_ext_bus_link_power_down_all(bus); 642 #endif 643 644 /* power down DSP */ 645 ret = hda_dsp_core_reset_power_down(sdev, chip->host_managed_cores_mask); 646 if (ret < 0) { 647 dev_err(sdev->dev, 648 "error: failed to power down core during suspend\n"); 649 return ret; 650 } 651 652 /* reset ref counts for all cores */ 653 for (j = 0; j < chip->cores_num; j++) 654 sdev->dsp_core_ref_count[j] = 0; 655 656 /* disable ppcap interrupt */ 657 hda_dsp_ctrl_ppcap_enable(sdev, false); 658 hda_dsp_ctrl_ppcap_int_enable(sdev, false); 659 660 /* disable hda bus irq and streams */ 661 hda_dsp_ctrl_stop_chip(sdev); 662 663 /* disable LP retention mode */ 664 snd_sof_pci_update_bits(sdev, PCI_PGCTL, 665 PCI_PGCTL_LSRMD_MASK, PCI_PGCTL_LSRMD_MASK); 666 667 /* reset controller */ 668 ret = hda_dsp_ctrl_link_reset(sdev, true); 669 if (ret < 0) { 670 dev_err(sdev->dev, 671 "error: failed to reset controller during suspend\n"); 672 return ret; 673 } 674 675 /* display codec can powered off after link reset */ 676 hda_codec_i915_display_power(sdev, false); 677 678 return 0; 679 } 680 681 static int hda_resume(struct snd_sof_dev *sdev, bool runtime_resume) 682 { 683 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA) 684 struct hdac_bus *bus = sof_to_bus(sdev); 685 struct hdac_ext_link *hlink = NULL; 686 #endif 687 int ret; 688 689 /* display codec must be powered before link reset */ 690 hda_codec_i915_display_power(sdev, true); 691 692 /* 693 * clear TCSEL to clear playback on some HD Audio 694 * codecs. PCI TCSEL is defined in the Intel manuals. 695 */ 696 snd_sof_pci_update_bits(sdev, PCI_TCSEL, 0x07, 0); 697 698 /* reset and start hda controller */ 699 ret = hda_dsp_ctrl_init_chip(sdev, true); 700 if (ret < 0) { 701 dev_err(sdev->dev, 702 "error: failed to start controller after resume\n"); 703 goto cleanup; 704 } 705 706 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA) 707 /* check jack status */ 708 if (runtime_resume) { 709 hda_codec_jack_wake_enable(sdev, false); 710 if (sdev->system_suspend_target == SOF_SUSPEND_NONE) 711 hda_codec_jack_check(sdev); 712 } 713 714 /* turn off the links that were off before suspend */ 715 list_for_each_entry(hlink, &bus->hlink_list, list) { 716 if (!hlink->ref_count) 717 snd_hdac_ext_bus_link_power_down(hlink); 718 } 719 720 /* check dma status and clean up CORB/RIRB buffers */ 721 if (!bus->cmd_dma_state) 722 snd_hdac_bus_stop_cmd_io(bus); 723 #endif 724 725 /* enable ppcap interrupt */ 726 hda_dsp_ctrl_ppcap_enable(sdev, true); 727 hda_dsp_ctrl_ppcap_int_enable(sdev, true); 728 729 cleanup: 730 /* display codec can powered off after controller init */ 731 hda_codec_i915_display_power(sdev, false); 732 733 return 0; 734 } 735 736 int hda_dsp_resume(struct snd_sof_dev *sdev) 737 { 738 struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata; 739 struct pci_dev *pci = to_pci_dev(sdev->dev); 740 const struct sof_dsp_power_state target_state = { 741 .state = SOF_DSP_PM_D0, 742 .substate = SOF_HDA_DSP_PM_D0I0, 743 }; 744 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA) 745 struct hdac_bus *bus = sof_to_bus(sdev); 746 struct hdac_ext_link *hlink = NULL; 747 #endif 748 int ret; 749 750 /* resume from D0I3 */ 751 if (sdev->dsp_power_state.state == SOF_DSP_PM_D0) { 752 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA) 753 /* power up links that were active before suspend */ 754 list_for_each_entry(hlink, &bus->hlink_list, list) { 755 if (hlink->ref_count) { 756 ret = snd_hdac_ext_bus_link_power_up(hlink); 757 if (ret < 0) { 758 dev_err(sdev->dev, 759 "error %d in %s: failed to power up links", 760 ret, __func__); 761 return ret; 762 } 763 } 764 } 765 766 /* set up CORB/RIRB buffers if was on before suspend */ 767 if (bus->cmd_dma_state) 768 snd_hdac_bus_init_cmd_io(bus); 769 #endif 770 771 /* Set DSP power state */ 772 ret = snd_sof_dsp_set_power_state(sdev, &target_state); 773 if (ret < 0) { 774 dev_err(sdev->dev, "error: setting dsp state %d substate %d\n", 775 target_state.state, target_state.substate); 776 return ret; 777 } 778 779 /* restore L1SEN bit */ 780 if (hda->l1_support_changed) 781 snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR, 782 HDA_VS_INTEL_EM2, 783 HDA_VS_INTEL_EM2_L1SEN, 0); 784 785 /* restore and disable the system wakeup */ 786 pci_restore_state(pci); 787 disable_irq_wake(pci->irq); 788 return 0; 789 } 790 791 /* init hda controller. DSP cores will be powered up during fw boot */ 792 ret = hda_resume(sdev, false); 793 if (ret < 0) 794 return ret; 795 796 return snd_sof_dsp_set_power_state(sdev, &target_state); 797 } 798 799 int hda_dsp_runtime_resume(struct snd_sof_dev *sdev) 800 { 801 const struct sof_dsp_power_state target_state = { 802 .state = SOF_DSP_PM_D0, 803 }; 804 int ret; 805 806 /* init hda controller. DSP cores will be powered up during fw boot */ 807 ret = hda_resume(sdev, true); 808 if (ret < 0) 809 return ret; 810 811 return snd_sof_dsp_set_power_state(sdev, &target_state); 812 } 813 814 int hda_dsp_runtime_idle(struct snd_sof_dev *sdev) 815 { 816 struct hdac_bus *hbus = sof_to_bus(sdev); 817 818 if (hbus->codec_powered) { 819 dev_dbg(sdev->dev, "some codecs still powered (%08X), not idle\n", 820 (unsigned int)hbus->codec_powered); 821 return -EBUSY; 822 } 823 824 return 0; 825 } 826 827 int hda_dsp_runtime_suspend(struct snd_sof_dev *sdev) 828 { 829 struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata; 830 const struct sof_dsp_power_state target_state = { 831 .state = SOF_DSP_PM_D3, 832 }; 833 int ret; 834 835 /* cancel any attempt for DSP D0I3 */ 836 cancel_delayed_work_sync(&hda->d0i3_work); 837 838 /* stop hda controller and power dsp off */ 839 ret = hda_suspend(sdev, true); 840 if (ret < 0) 841 return ret; 842 843 return snd_sof_dsp_set_power_state(sdev, &target_state); 844 } 845 846 int hda_dsp_suspend(struct snd_sof_dev *sdev, u32 target_state) 847 { 848 struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata; 849 struct hdac_bus *bus = sof_to_bus(sdev); 850 struct pci_dev *pci = to_pci_dev(sdev->dev); 851 const struct sof_dsp_power_state target_dsp_state = { 852 .state = target_state, 853 .substate = target_state == SOF_DSP_PM_D0 ? 854 SOF_HDA_DSP_PM_D0I3 : 0, 855 }; 856 int ret; 857 858 /* cancel any attempt for DSP D0I3 */ 859 cancel_delayed_work_sync(&hda->d0i3_work); 860 861 if (target_state == SOF_DSP_PM_D0) { 862 /* Set DSP power state */ 863 ret = snd_sof_dsp_set_power_state(sdev, &target_dsp_state); 864 if (ret < 0) { 865 dev_err(sdev->dev, "error: setting dsp state %d substate %d\n", 866 target_dsp_state.state, 867 target_dsp_state.substate); 868 return ret; 869 } 870 871 /* enable L1SEN to make sure the system can enter S0Ix */ 872 hda->l1_support_changed = 873 snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR, 874 HDA_VS_INTEL_EM2, 875 HDA_VS_INTEL_EM2_L1SEN, 876 HDA_VS_INTEL_EM2_L1SEN); 877 878 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA) 879 /* stop the CORB/RIRB DMA if it is On */ 880 if (bus->cmd_dma_state) 881 snd_hdac_bus_stop_cmd_io(bus); 882 883 /* no link can be powered in s0ix state */ 884 ret = snd_hdac_ext_bus_link_power_down_all(bus); 885 if (ret < 0) { 886 dev_err(sdev->dev, 887 "error %d in %s: failed to power down links", 888 ret, __func__); 889 return ret; 890 } 891 #endif 892 893 /* enable the system waking up via IPC IRQ */ 894 enable_irq_wake(pci->irq); 895 pci_save_state(pci); 896 return 0; 897 } 898 899 /* stop hda controller and power dsp off */ 900 ret = hda_suspend(sdev, false); 901 if (ret < 0) { 902 dev_err(bus->dev, "error: suspending dsp\n"); 903 return ret; 904 } 905 906 return snd_sof_dsp_set_power_state(sdev, &target_dsp_state); 907 } 908 909 int hda_dsp_shutdown(struct snd_sof_dev *sdev) 910 { 911 sdev->system_suspend_target = SOF_SUSPEND_S3; 912 return snd_sof_suspend(sdev->dev); 913 } 914 915 int hda_dsp_set_hw_params_upon_resume(struct snd_sof_dev *sdev) 916 { 917 int ret; 918 919 /* make sure all DAI resources are freed */ 920 ret = hda_dsp_dais_suspend(sdev); 921 if (ret < 0) 922 dev_warn(sdev->dev, "%s: failure in hda_dsp_dais_suspend\n", __func__); 923 924 return ret; 925 } 926 927 void hda_dsp_d0i3_work(struct work_struct *work) 928 { 929 struct sof_intel_hda_dev *hdev = container_of(work, 930 struct sof_intel_hda_dev, 931 d0i3_work.work); 932 struct hdac_bus *bus = &hdev->hbus.core; 933 struct snd_sof_dev *sdev = dev_get_drvdata(bus->dev); 934 struct sof_dsp_power_state target_state = { 935 .state = SOF_DSP_PM_D0, 936 .substate = SOF_HDA_DSP_PM_D0I3, 937 }; 938 int ret; 939 940 /* DSP can enter D0I3 iff only D0I3-compatible streams are active */ 941 if (!snd_sof_dsp_only_d0i3_compatible_stream_active(sdev)) 942 /* remain in D0I0 */ 943 return; 944 945 /* This can fail but error cannot be propagated */ 946 ret = snd_sof_dsp_set_power_state(sdev, &target_state); 947 if (ret < 0) 948 dev_err_ratelimited(sdev->dev, 949 "error: failed to set DSP state %d substate %d\n", 950 target_state.state, target_state.substate); 951 } 952 953 int hda_dsp_core_get(struct snd_sof_dev *sdev, int core) 954 { 955 const struct sof_ipc_pm_ops *pm_ops = sdev->ipc->ops->pm; 956 int ret, ret1; 957 958 /* power up core */ 959 ret = hda_dsp_enable_core(sdev, BIT(core)); 960 if (ret < 0) { 961 dev_err(sdev->dev, "failed to power up core %d with err: %d\n", 962 core, ret); 963 return ret; 964 } 965 966 /* No need to send IPC for primary core or if FW boot is not complete */ 967 if (sdev->fw_state != SOF_FW_BOOT_COMPLETE || core == SOF_DSP_PRIMARY_CORE) 968 return 0; 969 970 /* No need to continue the set_core_state ops is not available */ 971 if (!pm_ops->set_core_state) 972 return 0; 973 974 /* Now notify DSP for secondary cores */ 975 ret = pm_ops->set_core_state(sdev, core, true); 976 if (ret < 0) { 977 dev_err(sdev->dev, "failed to enable secondary core '%d' failed with %d\n", 978 core, ret); 979 goto power_down; 980 } 981 982 return ret; 983 984 power_down: 985 /* power down core if it is host managed and return the original error if this fails too */ 986 ret1 = hda_dsp_core_reset_power_down(sdev, BIT(core)); 987 if (ret1 < 0) 988 dev_err(sdev->dev, "failed to power down core: %d with err: %d\n", core, ret1); 989 990 return ret; 991 } 992