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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 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 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 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 int hda_dsp_core_run(struct snd_sof_dev *sdev, unsigned int core_mask)
129 {
130 int ret;
131
132 /* leave reset state */
133 ret = hda_dsp_core_reset_leave(sdev, core_mask);
134 if (ret < 0)
135 return ret;
136
137 /* run core */
138 dev_dbg(sdev->dev, "unstall/run core: core_mask = %x\n", core_mask);
139 snd_sof_dsp_update_bits_unlocked(sdev, HDA_DSP_BAR,
140 HDA_DSP_REG_ADSPCS,
141 HDA_DSP_ADSPCS_CSTALL_MASK(core_mask),
142 0);
143
144 /* is core now running ? */
145 if (!hda_dsp_core_is_enabled(sdev, core_mask)) {
146 hda_dsp_core_stall_reset(sdev, core_mask);
147 dev_err(sdev->dev, "error: DSP start core failed: core_mask %x\n",
148 core_mask);
149 ret = -EIO;
150 }
151
152 return ret;
153 }
154
155 /*
156 * Power Management.
157 */
158
159 int hda_dsp_core_power_up(struct snd_sof_dev *sdev, unsigned int core_mask)
160 {
161 unsigned int cpa;
162 u32 adspcs;
163 int ret;
164
165 /* update bits */
166 snd_sof_dsp_update_bits(sdev, HDA_DSP_BAR, HDA_DSP_REG_ADSPCS,
167 HDA_DSP_ADSPCS_SPA_MASK(core_mask),
168 HDA_DSP_ADSPCS_SPA_MASK(core_mask));
169
170 /* poll with timeout to check if operation successful */
171 cpa = HDA_DSP_ADSPCS_CPA_MASK(core_mask);
172 ret = snd_sof_dsp_read_poll_timeout(sdev, HDA_DSP_BAR,
173 HDA_DSP_REG_ADSPCS, adspcs,
174 (adspcs & cpa) == cpa,
175 HDA_DSP_REG_POLL_INTERVAL_US,
176 HDA_DSP_RESET_TIMEOUT_US);
177 if (ret < 0) {
178 dev_err(sdev->dev,
179 "error: %s: timeout on HDA_DSP_REG_ADSPCS read\n",
180 __func__);
181 return ret;
182 }
183
184 /* did core power up ? */
185 adspcs = snd_sof_dsp_read(sdev, HDA_DSP_BAR,
186 HDA_DSP_REG_ADSPCS);
187 if ((adspcs & HDA_DSP_ADSPCS_CPA_MASK(core_mask)) !=
188 HDA_DSP_ADSPCS_CPA_MASK(core_mask)) {
189 dev_err(sdev->dev,
190 "error: power up core failed core_mask %xadspcs 0x%x\n",
191 core_mask, adspcs);
192 ret = -EIO;
193 }
194
195 return ret;
196 }
197
198 int hda_dsp_core_power_down(struct snd_sof_dev *sdev, unsigned int core_mask)
199 {
200 u32 adspcs;
201 int ret;
202
203 /* update bits */
204 snd_sof_dsp_update_bits_unlocked(sdev, HDA_DSP_BAR,
205 HDA_DSP_REG_ADSPCS,
206 HDA_DSP_ADSPCS_SPA_MASK(core_mask), 0);
207
208 ret = snd_sof_dsp_read_poll_timeout(sdev, HDA_DSP_BAR,
209 HDA_DSP_REG_ADSPCS, adspcs,
210 !(adspcs & HDA_DSP_ADSPCS_SPA_MASK(core_mask)),
211 HDA_DSP_REG_POLL_INTERVAL_US,
212 HDA_DSP_PD_TIMEOUT * USEC_PER_MSEC);
213 if (ret < 0)
214 dev_err(sdev->dev,
215 "error: %s: timeout on HDA_DSP_REG_ADSPCS read\n",
216 __func__);
217
218 return ret;
219 }
220
221 bool hda_dsp_core_is_enabled(struct snd_sof_dev *sdev,
222 unsigned int core_mask)
223 {
224 int val;
225 bool is_enable;
226
227 val = snd_sof_dsp_read(sdev, HDA_DSP_BAR, HDA_DSP_REG_ADSPCS);
228
229 is_enable = (val & HDA_DSP_ADSPCS_CPA_MASK(core_mask)) &&
230 (val & HDA_DSP_ADSPCS_SPA_MASK(core_mask)) &&
231 !(val & HDA_DSP_ADSPCS_CRST_MASK(core_mask)) &&
232 !(val & HDA_DSP_ADSPCS_CSTALL_MASK(core_mask));
233
234 dev_dbg(sdev->dev, "DSP core(s) enabled? %d : core_mask %x\n",
235 is_enable, core_mask);
236
237 return is_enable;
238 }
239
240 int hda_dsp_enable_core(struct snd_sof_dev *sdev, unsigned int core_mask)
241 {
242 struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;
243 const struct sof_intel_dsp_desc *chip = hda->desc;
244 int ret;
245
246 /* restrict core_mask to host managed cores mask */
247 core_mask &= chip->host_managed_cores_mask;
248
249 /* return if core_mask is not valid or cores are already enabled */
250 if (!core_mask || hda_dsp_core_is_enabled(sdev, core_mask))
251 return 0;
252
253 /* power up */
254 ret = hda_dsp_core_power_up(sdev, core_mask);
255 if (ret < 0) {
256 dev_err(sdev->dev, "error: dsp core power up failed: core_mask %x\n",
257 core_mask);
258 return ret;
259 }
260
261 return hda_dsp_core_run(sdev, core_mask);
262 }
263
264 int hda_dsp_core_reset_power_down(struct snd_sof_dev *sdev,
265 unsigned int core_mask)
266 {
267 struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;
268 const struct sof_intel_dsp_desc *chip = hda->desc;
269 int ret;
270
271 /* restrict core_mask to host managed cores mask */
272 core_mask &= chip->host_managed_cores_mask;
273
274 /* return if core_mask is not valid */
275 if (!core_mask)
276 return 0;
277
278 /* place core in reset prior to power down */
279 ret = hda_dsp_core_stall_reset(sdev, core_mask);
280 if (ret < 0) {
281 dev_err(sdev->dev, "error: dsp core reset failed: core_mask %x\n",
282 core_mask);
283 return ret;
284 }
285
286 /* power down core */
287 ret = hda_dsp_core_power_down(sdev, core_mask);
288 if (ret < 0) {
289 dev_err(sdev->dev, "error: dsp core power down fail mask %x: %d\n",
290 core_mask, ret);
291 return ret;
292 }
293
294 /* make sure we are in OFF state */
295 if (hda_dsp_core_is_enabled(sdev, core_mask)) {
296 dev_err(sdev->dev, "error: dsp core disable fail mask %x: %d\n",
297 core_mask, ret);
298 ret = -EIO;
299 }
300
301 return ret;
302 }
303
304 void hda_dsp_ipc_int_enable(struct snd_sof_dev *sdev)
305 {
306 struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;
307 const struct sof_intel_dsp_desc *chip = hda->desc;
308
309 /* enable IPC DONE and BUSY interrupts */
310 snd_sof_dsp_update_bits(sdev, HDA_DSP_BAR, chip->ipc_ctl,
311 HDA_DSP_REG_HIPCCTL_DONE | HDA_DSP_REG_HIPCCTL_BUSY,
312 HDA_DSP_REG_HIPCCTL_DONE | HDA_DSP_REG_HIPCCTL_BUSY);
313
314 /* enable IPC interrupt */
315 snd_sof_dsp_update_bits(sdev, HDA_DSP_BAR, HDA_DSP_REG_ADSPIC,
316 HDA_DSP_ADSPIC_IPC, HDA_DSP_ADSPIC_IPC);
317 }
318
319 void hda_dsp_ipc_int_disable(struct snd_sof_dev *sdev)
320 {
321 struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;
322 const struct sof_intel_dsp_desc *chip = hda->desc;
323
324 /* disable IPC interrupt */
325 snd_sof_dsp_update_bits(sdev, HDA_DSP_BAR, HDA_DSP_REG_ADSPIC,
326 HDA_DSP_ADSPIC_IPC, 0);
327
328 /* disable IPC BUSY and DONE interrupt */
329 snd_sof_dsp_update_bits(sdev, HDA_DSP_BAR, chip->ipc_ctl,
330 HDA_DSP_REG_HIPCCTL_BUSY | HDA_DSP_REG_HIPCCTL_DONE, 0);
331 }
332
333 static int hda_dsp_wait_d0i3c_done(struct snd_sof_dev *sdev)
334 {
335 struct hdac_bus *bus = sof_to_bus(sdev);
336 int retry = HDA_DSP_REG_POLL_RETRY_COUNT;
337
338 while (snd_hdac_chip_readb(bus, VS_D0I3C) & SOF_HDA_VS_D0I3C_CIP) {
339 if (!retry--)
340 return -ETIMEDOUT;
341 usleep_range(10, 15);
342 }
343
344 return 0;
345 }
346
347 static int hda_dsp_send_pm_gate_ipc(struct snd_sof_dev *sdev, u32 flags)
348 {
349 struct sof_ipc_pm_gate pm_gate;
350 struct sof_ipc_reply reply;
351
352 memset(&pm_gate, 0, sizeof(pm_gate));
353
354 /* configure pm_gate ipc message */
355 pm_gate.hdr.size = sizeof(pm_gate);
356 pm_gate.hdr.cmd = SOF_IPC_GLB_PM_MSG | SOF_IPC_PM_GATE;
357 pm_gate.flags = flags;
358
359 /* send pm_gate ipc to dsp */
360 return sof_ipc_tx_message_no_pm(sdev->ipc, pm_gate.hdr.cmd,
361 &pm_gate, sizeof(pm_gate), &reply,
362 sizeof(reply));
363 }
364
365 static int hda_dsp_update_d0i3c_register(struct snd_sof_dev *sdev, u8 value)
366 {
367 struct hdac_bus *bus = sof_to_bus(sdev);
368 int ret;
369
370 /* Write to D0I3C after Command-In-Progress bit is cleared */
371 ret = hda_dsp_wait_d0i3c_done(sdev);
372 if (ret < 0) {
373 dev_err(bus->dev, "CIP timeout before D0I3C update!\n");
374 return ret;
375 }
376
377 /* Update D0I3C register */
378 snd_hdac_chip_updateb(bus, VS_D0I3C, SOF_HDA_VS_D0I3C_I3, value);
379
380 /* Wait for cmd in progress to be cleared before exiting the function */
381 ret = hda_dsp_wait_d0i3c_done(sdev);
382 if (ret < 0) {
383 dev_err(bus->dev, "CIP timeout after D0I3C update!\n");
384 return ret;
385 }
386
387 dev_vdbg(bus->dev, "D0I3C updated, register = 0x%x\n",
388 snd_hdac_chip_readb(bus, VS_D0I3C));
389
390 return 0;
391 }
392
393 static int hda_dsp_set_D0_state(struct snd_sof_dev *sdev,
394 const struct sof_dsp_power_state *target_state)
395 {
396 u32 flags = 0;
397 int ret;
398 u8 value = 0;
399
400 /*
401 * Sanity check for illegal state transitions
402 * The only allowed transitions are:
403 * 1. D3 -> D0I0
404 * 2. D0I0 -> D0I3
405 * 3. D0I3 -> D0I0
406 */
407 switch (sdev->dsp_power_state.state) {
408 case SOF_DSP_PM_D0:
409 /* Follow the sequence below for D0 substate transitions */
410 break;
411 case SOF_DSP_PM_D3:
412 /* Follow regular flow for D3 -> D0 transition */
413 return 0;
414 default:
415 dev_err(sdev->dev, "error: transition from %d to %d not allowed\n",
416 sdev->dsp_power_state.state, target_state->state);
417 return -EINVAL;
418 }
419
420 /* Set flags and register value for D0 target substate */
421 if (target_state->substate == SOF_HDA_DSP_PM_D0I3) {
422 value = SOF_HDA_VS_D0I3C_I3;
423
424 /*
425 * Trace DMA need to be disabled when the DSP enters
426 * D0I3 for S0Ix suspend, but it can be kept enabled
427 * when the DSP enters D0I3 while the system is in S0
428 * for debug purpose.
429 */
430 if (!sdev->dtrace_is_supported ||
431 !hda_enable_trace_D0I3_S0 ||
432 sdev->system_suspend_target != SOF_SUSPEND_NONE)
433 flags = HDA_PM_NO_DMA_TRACE;
434 } else {
435 /* prevent power gating in D0I0 */
436 flags = HDA_PM_PPG;
437 }
438
439 /* update D0I3C register */
440 ret = hda_dsp_update_d0i3c_register(sdev, value);
441 if (ret < 0)
442 return ret;
443
444 /*
445 * Notify the DSP of the state change.
446 * If this IPC fails, revert the D0I3C register update in order
447 * to prevent partial state change.
448 */
449 ret = hda_dsp_send_pm_gate_ipc(sdev, flags);
450 if (ret < 0) {
451 dev_err(sdev->dev,
452 "error: PM_GATE ipc error %d\n", ret);
453 goto revert;
454 }
455
456 return ret;
457
458 revert:
459 /* fallback to the previous register value */
460 value = value ? 0 : SOF_HDA_VS_D0I3C_I3;
461
462 /*
463 * This can fail but return the IPC error to signal that
464 * the state change failed.
465 */
466 hda_dsp_update_d0i3c_register(sdev, value);
467
468 return ret;
469 }
470
471 /* helper to log DSP state */
472 static void hda_dsp_state_log(struct snd_sof_dev *sdev)
473 {
474 switch (sdev->dsp_power_state.state) {
475 case SOF_DSP_PM_D0:
476 switch (sdev->dsp_power_state.substate) {
477 case SOF_HDA_DSP_PM_D0I0:
478 dev_dbg(sdev->dev, "Current DSP power state: D0I0\n");
479 break;
480 case SOF_HDA_DSP_PM_D0I3:
481 dev_dbg(sdev->dev, "Current DSP power state: D0I3\n");
482 break;
483 default:
484 dev_dbg(sdev->dev, "Unknown DSP D0 substate: %d\n",
485 sdev->dsp_power_state.substate);
486 break;
487 }
488 break;
489 case SOF_DSP_PM_D1:
490 dev_dbg(sdev->dev, "Current DSP power state: D1\n");
491 break;
492 case SOF_DSP_PM_D2:
493 dev_dbg(sdev->dev, "Current DSP power state: D2\n");
494 break;
495 case SOF_DSP_PM_D3_HOT:
496 dev_dbg(sdev->dev, "Current DSP power state: D3_HOT\n");
497 break;
498 case SOF_DSP_PM_D3:
499 dev_dbg(sdev->dev, "Current DSP power state: D3\n");
500 break;
501 case SOF_DSP_PM_D3_COLD:
502 dev_dbg(sdev->dev, "Current DSP power state: D3_COLD\n");
503 break;
504 default:
505 dev_dbg(sdev->dev, "Unknown DSP power state: %d\n",
506 sdev->dsp_power_state.state);
507 break;
508 }
509 }
510
511 /*
512 * All DSP power state transitions are initiated by the driver.
513 * If the requested state change fails, the error is simply returned.
514 * Further state transitions are attempted only when the set_power_save() op
515 * is called again either because of a new IPC sent to the DSP or
516 * during system suspend/resume.
517 */
518 int hda_dsp_set_power_state(struct snd_sof_dev *sdev,
519 const struct sof_dsp_power_state *target_state)
520 {
521 int ret = 0;
522
523 /*
524 * When the DSP is already in D0I3 and the target state is D0I3,
525 * it could be the case that the DSP is in D0I3 during S0
526 * and the system is suspending to S0Ix. Therefore,
527 * hda_dsp_set_D0_state() must be called to disable trace DMA
528 * by sending the PM_GATE IPC to the FW.
529 */
530 if (target_state->substate == SOF_HDA_DSP_PM_D0I3 &&
531 sdev->system_suspend_target == SOF_SUSPEND_S0IX)
532 goto set_state;
533
534 /*
535 * For all other cases, return without doing anything if
536 * the DSP is already in the target state.
537 */
538 if (target_state->state == sdev->dsp_power_state.state &&
539 target_state->substate == sdev->dsp_power_state.substate)
540 return 0;
541
542 set_state:
543 switch (target_state->state) {
544 case SOF_DSP_PM_D0:
545 ret = hda_dsp_set_D0_state(sdev, target_state);
546 break;
547 case SOF_DSP_PM_D3:
548 /* The only allowed transition is: D0I0 -> D3 */
549 if (sdev->dsp_power_state.state == SOF_DSP_PM_D0 &&
550 sdev->dsp_power_state.substate == SOF_HDA_DSP_PM_D0I0)
551 break;
552
553 dev_err(sdev->dev,
554 "error: transition from %d to %d not allowed\n",
555 sdev->dsp_power_state.state, target_state->state);
556 return -EINVAL;
557 default:
558 dev_err(sdev->dev, "error: target state unsupported %d\n",
559 target_state->state);
560 return -EINVAL;
561 }
562 if (ret < 0) {
563 dev_err(sdev->dev,
564 "failed to set requested target DSP state %d substate %d\n",
565 target_state->state, target_state->substate);
566 return ret;
567 }
568
569 sdev->dsp_power_state = *target_state;
570 hda_dsp_state_log(sdev);
571 return ret;
572 }
573
574 /*
575 * Audio DSP states may transform as below:-
576 *
577 * Opportunistic D0I3 in S0
578 * Runtime +---------------------+ Delayed D0i3 work timeout
579 * suspend | +--------------------+
580 * +------------+ D0I0(active) | |
581 * | | <---------------+ |
582 * | +--------> | New IPC | |
583 * | |Runtime +--^--+---------^--+--+ (via mailbox) | |
584 * | |resume | | | | | |
585 * | | | | | | | |
586 * | | System| | | | | |
587 * | | resume| | S3/S0IX | | | |
588 * | | | | suspend | | S0IX | |
589 * | | | | | |suspend | |
590 * | | | | | | | |
591 * | | | | | | | |
592 * +-v---+-----------+--v-------+ | | +------+----v----+
593 * | | | +-----------> |
594 * | D3 (suspended) | | | D0I3 |
595 * | | +--------------+ |
596 * | | System resume | |
597 * +----------------------------+ +----------------+
598 *
599 * S0IX suspend: The DSP is in D0I3 if any D0I3-compatible streams
600 * ignored the suspend trigger. Otherwise the DSP
601 * is in D3.
602 */
603
604 static int hda_suspend(struct snd_sof_dev *sdev, bool runtime_suspend)
605 {
606 struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;
607 const struct sof_intel_dsp_desc *chip = hda->desc;
608 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
609 struct hdac_bus *bus = sof_to_bus(sdev);
610 #endif
611 int ret;
612
613 hda_sdw_int_enable(sdev, false);
614
615 /* disable IPC interrupts */
616 hda_dsp_ipc_int_disable(sdev);
617
618 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
619 if (runtime_suspend)
620 hda_codec_jack_wake_enable(sdev, true);
621
622 /* power down all hda link */
623 snd_hdac_ext_bus_link_power_down_all(bus);
624 #endif
625
626 /* power down DSP */
627 ret = hda_dsp_core_reset_power_down(sdev, chip->host_managed_cores_mask);
628 if (ret < 0) {
629 dev_err(sdev->dev,
630 "error: failed to power down core during suspend\n");
631 return ret;
632 }
633
634 /* disable ppcap interrupt */
635 hda_dsp_ctrl_ppcap_enable(sdev, false);
636 hda_dsp_ctrl_ppcap_int_enable(sdev, false);
637
638 /* disable hda bus irq and streams */
639 hda_dsp_ctrl_stop_chip(sdev);
640
641 /* disable LP retention mode */
642 snd_sof_pci_update_bits(sdev, PCI_PGCTL,
643 PCI_PGCTL_LSRMD_MASK, PCI_PGCTL_LSRMD_MASK);
644
645 /* reset controller */
646 ret = hda_dsp_ctrl_link_reset(sdev, true);
647 if (ret < 0) {
648 dev_err(sdev->dev,
649 "error: failed to reset controller during suspend\n");
650 return ret;
651 }
652
653 /* display codec can powered off after link reset */
654 hda_codec_i915_display_power(sdev, false);
655
656 return 0;
657 }
658
659 static int hda_resume(struct snd_sof_dev *sdev, bool runtime_resume)
660 {
661 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
662 struct hdac_bus *bus = sof_to_bus(sdev);
663 struct hdac_ext_link *hlink = NULL;
664 #endif
665 int ret;
666
667 /* display codec must be powered before link reset */
668 hda_codec_i915_display_power(sdev, true);
669
670 /*
671 * clear TCSEL to clear playback on some HD Audio
672 * codecs. PCI TCSEL is defined in the Intel manuals.
673 */
674 snd_sof_pci_update_bits(sdev, PCI_TCSEL, 0x07, 0);
675
676 /* reset and start hda controller */
677 ret = hda_dsp_ctrl_init_chip(sdev, true);
678 if (ret < 0) {
679 dev_err(sdev->dev,
680 "error: failed to start controller after resume\n");
681 return ret;
682 }
683
684 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
685 /* check jack status */
686 if (runtime_resume) {
687 hda_codec_jack_wake_enable(sdev, false);
688 hda_codec_jack_check(sdev);
689 }
690
691 /* turn off the links that were off before suspend */
692 list_for_each_entry(hlink, &bus->hlink_list, list) {
693 if (!hlink->ref_count)
694 snd_hdac_ext_bus_link_power_down(hlink);
695 }
696
697 /* check dma status and clean up CORB/RIRB buffers */
698 if (!bus->cmd_dma_state)
699 snd_hdac_bus_stop_cmd_io(bus);
700 #endif
701
702 /* enable ppcap interrupt */
703 hda_dsp_ctrl_ppcap_enable(sdev, true);
704 hda_dsp_ctrl_ppcap_int_enable(sdev, true);
705
706 return 0;
707 }
708
709 int hda_dsp_resume(struct snd_sof_dev *sdev)
710 {
711 struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;
712 struct pci_dev *pci = to_pci_dev(sdev->dev);
713 const struct sof_dsp_power_state target_state = {
714 .state = SOF_DSP_PM_D0,
715 .substate = SOF_HDA_DSP_PM_D0I0,
716 };
717 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
718 struct hdac_bus *bus = sof_to_bus(sdev);
719 struct hdac_ext_link *hlink = NULL;
720 #endif
721 int ret;
722
723 /* resume from D0I3 */
724 if (sdev->dsp_power_state.state == SOF_DSP_PM_D0) {
725 hda_codec_i915_display_power(sdev, true);
726
727 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
728 /* power up links that were active before suspend */
729 list_for_each_entry(hlink, &bus->hlink_list, list) {
730 if (hlink->ref_count) {
731 ret = snd_hdac_ext_bus_link_power_up(hlink);
732 if (ret < 0) {
733 dev_dbg(sdev->dev,
734 "error %x in %s: failed to power up links",
735 ret, __func__);
736 return ret;
737 }
738 }
739 }
740
741 /* set up CORB/RIRB buffers if was on before suspend */
742 if (bus->cmd_dma_state)
743 snd_hdac_bus_init_cmd_io(bus);
744 #endif
745
746 /* Set DSP power state */
747 ret = snd_sof_dsp_set_power_state(sdev, &target_state);
748 if (ret < 0) {
749 dev_err(sdev->dev, "error: setting dsp state %d substate %d\n",
750 target_state.state, target_state.substate);
751 return ret;
752 }
753
754 /* restore L1SEN bit */
755 if (hda->l1_support_changed)
756 snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR,
757 HDA_VS_INTEL_EM2,
758 HDA_VS_INTEL_EM2_L1SEN, 0);
759
760 /* restore and disable the system wakeup */
761 pci_restore_state(pci);
762 disable_irq_wake(pci->irq);
763 return 0;
764 }
765
766 /* init hda controller. DSP cores will be powered up during fw boot */
767 ret = hda_resume(sdev, false);
768 if (ret < 0)
769 return ret;
770
771 return snd_sof_dsp_set_power_state(sdev, &target_state);
772 }
773
774 int hda_dsp_runtime_resume(struct snd_sof_dev *sdev)
775 {
776 const struct sof_dsp_power_state target_state = {
777 .state = SOF_DSP_PM_D0,
778 };
779 int ret;
780
781 /* init hda controller. DSP cores will be powered up during fw boot */
782 ret = hda_resume(sdev, true);
783 if (ret < 0)
784 return ret;
785
786 return snd_sof_dsp_set_power_state(sdev, &target_state);
787 }
788
789 int hda_dsp_runtime_idle(struct snd_sof_dev *sdev)
790 {
791 struct hdac_bus *hbus = sof_to_bus(sdev);
792
793 if (hbus->codec_powered) {
794 dev_dbg(sdev->dev, "some codecs still powered (%08X), not idle\n",
795 (unsigned int)hbus->codec_powered);
796 return -EBUSY;
797 }
798
799 return 0;
800 }
801
802 int hda_dsp_runtime_suspend(struct snd_sof_dev *sdev)
803 {
804 const struct sof_dsp_power_state target_state = {
805 .state = SOF_DSP_PM_D3,
806 };
807 int ret;
808
809 /* stop hda controller and power dsp off */
810 ret = hda_suspend(sdev, true);
811 if (ret < 0)
812 return ret;
813
814 return snd_sof_dsp_set_power_state(sdev, &target_state);
815 }
816
817 int hda_dsp_suspend(struct snd_sof_dev *sdev, u32 target_state)
818 {
819 struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;
820 struct hdac_bus *bus = sof_to_bus(sdev);
821 struct pci_dev *pci = to_pci_dev(sdev->dev);
822 const struct sof_dsp_power_state target_dsp_state = {
823 .state = target_state,
824 .substate = target_state == SOF_DSP_PM_D0 ?
825 SOF_HDA_DSP_PM_D0I3 : 0,
826 };
827 int ret;
828
829 /* cancel any attempt for DSP D0I3 */
830 cancel_delayed_work_sync(&hda->d0i3_work);
831
832 if (target_state == SOF_DSP_PM_D0) {
833 /* we can't keep a wakeref to display driver at suspend */
834 hda_codec_i915_display_power(sdev, false);
835
836 /* Set DSP power state */
837 ret = snd_sof_dsp_set_power_state(sdev, &target_dsp_state);
838 if (ret < 0) {
839 dev_err(sdev->dev, "error: setting dsp state %d substate %d\n",
840 target_dsp_state.state,
841 target_dsp_state.substate);
842 return ret;
843 }
844
845 /* enable L1SEN to make sure the system can enter S0Ix */
846 hda->l1_support_changed =
847 snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR,
848 HDA_VS_INTEL_EM2,
849 HDA_VS_INTEL_EM2_L1SEN,
850 HDA_VS_INTEL_EM2_L1SEN);
851
852 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
853 /* stop the CORB/RIRB DMA if it is On */
854 if (bus->cmd_dma_state)
855 snd_hdac_bus_stop_cmd_io(bus);
856
857 /* no link can be powered in s0ix state */
858 ret = snd_hdac_ext_bus_link_power_down_all(bus);
859 if (ret < 0) {
860 dev_dbg(sdev->dev,
861 "error %d in %s: failed to power down links",
862 ret, __func__);
863 return ret;
864 }
865 #endif
866
867 /* enable the system waking up via IPC IRQ */
868 enable_irq_wake(pci->irq);
869 pci_save_state(pci);
870 return 0;
871 }
872
873 /* stop hda controller and power dsp off */
874 ret = hda_suspend(sdev, false);
875 if (ret < 0) {
876 dev_err(bus->dev, "error: suspending dsp\n");
877 return ret;
878 }
879
880 return snd_sof_dsp_set_power_state(sdev, &target_dsp_state);
881 }
882
883 int hda_dsp_set_hw_params_upon_resume(struct snd_sof_dev *sdev)
884 {
885 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
886 struct hdac_bus *bus = sof_to_bus(sdev);
887 struct snd_soc_pcm_runtime *rtd;
888 struct hdac_ext_stream *stream;
889 struct hdac_ext_link *link;
890 struct hdac_stream *s;
891 const char *name;
892 int stream_tag;
893
894 /* set internal flag for BE */
895 list_for_each_entry(s, &bus->stream_list, list) {
896 stream = stream_to_hdac_ext_stream(s);
897
898 /*
899 * clear stream. This should already be taken care for running
900 * streams when the SUSPEND trigger is called. But paused
901 * streams do not get suspended, so this needs to be done
902 * explicitly during suspend.
903 */
904 if (stream->link_substream) {
905 rtd = asoc_substream_to_rtd(stream->link_substream);
906 name = asoc_rtd_to_codec(rtd, 0)->component->name;
907 link = snd_hdac_ext_bus_get_link(bus, name);
908 if (!link)
909 return -EINVAL;
910
911 stream->link_prepared = 0;
912
913 if (hdac_stream(stream)->direction ==
914 SNDRV_PCM_STREAM_CAPTURE)
915 continue;
916
917 stream_tag = hdac_stream(stream)->stream_tag;
918 snd_hdac_ext_link_clear_stream_id(link, stream_tag);
919 }
920 }
921 #endif
922 return 0;
923 }
924
925 void hda_dsp_d0i3_work(struct work_struct *work)
926 {
927 struct sof_intel_hda_dev *hdev = container_of(work,
928 struct sof_intel_hda_dev,
929 d0i3_work.work);
930 struct hdac_bus *bus = &hdev->hbus.core;
931 struct snd_sof_dev *sdev = dev_get_drvdata(bus->dev);
932 struct sof_dsp_power_state target_state;
933 int ret;
934
935 target_state.state = SOF_DSP_PM_D0;
936
937 /* DSP can enter D0I3 iff only D0I3-compatible streams are active */
938 if (snd_sof_dsp_only_d0i3_compatible_stream_active(sdev))
939 target_state.substate = SOF_HDA_DSP_PM_D0I3;
940 else
941 target_state.substate = SOF_HDA_DSP_PM_D0I0;
942
943 /* remain in D0I0 */
944 if (target_state.substate == SOF_HDA_DSP_PM_D0I0)
945 return;
946
947 /* This can fail but error cannot be propagated */
948 ret = snd_sof_dsp_set_power_state(sdev, &target_state);
949 if (ret < 0)
950 dev_err_ratelimited(sdev->dev,
951 "error: failed to set DSP state %d substate %d\n",
952 target_state.state, target_state.substate);
953 }
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