1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
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.
6 // Copyright(c) 2018 Intel Corporation. All rights reserved.
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>
15 * Hardware interface for generic Intel audio DSP HDA IP
18 #include <linux/module.h>
19 #include <sound/hdaudio_ext.h>
20 #include <sound/hda_register.h>
21 #include "../sof-audio.h"
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");
37 int hda_dsp_core_reset_enter(struct snd_sof_dev *sdev, unsigned int core_mask)
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,
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);
57 "error: %s: timeout on HDA_DSP_REG_ADSPCS read\n",
62 /* has core entered reset ? */
63 adspcs = snd_sof_dsp_read(sdev, HDA_DSP_BAR,
65 if ((adspcs & HDA_DSP_ADSPCS_CRST_MASK(core_mask)) !=
66 HDA_DSP_ADSPCS_CRST_MASK(core_mask)) {
68 "error: reset enter failed: core_mask %x adspcs 0x%x\n",
76 int hda_dsp_core_reset_leave(struct snd_sof_dev *sdev, unsigned int core_mask)
82 /* clear reset bits for cores */
83 snd_sof_dsp_update_bits_unlocked(sdev, HDA_DSP_BAR,
85 HDA_DSP_ADSPCS_CRST_MASK(core_mask),
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,
93 HDA_DSP_REG_POLL_INTERVAL_US,
94 HDA_DSP_RESET_TIMEOUT_US);
98 "error: %s: timeout on HDA_DSP_REG_ADSPCS read\n",
103 /* has core left reset ? */
104 adspcs = snd_sof_dsp_read(sdev, HDA_DSP_BAR,
106 if ((adspcs & HDA_DSP_ADSPCS_CRST_MASK(core_mask)) != 0) {
108 "error: reset leave failed: core_mask %x adspcs 0x%x\n",
116 int hda_dsp_core_stall_reset(struct snd_sof_dev *sdev, unsigned int core_mask)
119 snd_sof_dsp_update_bits_unlocked(sdev, HDA_DSP_BAR,
121 HDA_DSP_ADSPCS_CSTALL_MASK(core_mask),
122 HDA_DSP_ADSPCS_CSTALL_MASK(core_mask));
124 /* set reset state */
125 return hda_dsp_core_reset_enter(sdev, core_mask);
128 int hda_dsp_core_run(struct snd_sof_dev *sdev, unsigned int core_mask)
132 /* leave reset state */
133 ret = hda_dsp_core_reset_leave(sdev, core_mask);
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,
141 HDA_DSP_ADSPCS_CSTALL_MASK(core_mask),
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",
159 int hda_dsp_core_power_up(struct snd_sof_dev *sdev, unsigned int core_mask)
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));
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);
179 "error: %s: timeout on HDA_DSP_REG_ADSPCS read\n",
184 /* did core power up ? */
185 adspcs = snd_sof_dsp_read(sdev, HDA_DSP_BAR,
187 if ((adspcs & HDA_DSP_ADSPCS_CPA_MASK(core_mask)) !=
188 HDA_DSP_ADSPCS_CPA_MASK(core_mask)) {
190 "error: power up core failed core_mask %xadspcs 0x%x\n",
198 int hda_dsp_core_power_down(struct snd_sof_dev *sdev, unsigned int core_mask)
204 snd_sof_dsp_update_bits_unlocked(sdev, HDA_DSP_BAR,
206 HDA_DSP_ADSPCS_SPA_MASK(core_mask), 0);
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);
215 "error: %s: timeout on HDA_DSP_REG_ADSPCS read\n",
221 bool hda_dsp_core_is_enabled(struct snd_sof_dev *sdev,
222 unsigned int core_mask)
227 val = snd_sof_dsp_read(sdev, HDA_DSP_BAR, HDA_DSP_REG_ADSPCS);
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));
234 dev_dbg(sdev->dev, "DSP core(s) enabled? %d : core_mask %x\n",
235 is_enable, core_mask);
240 int hda_dsp_enable_core(struct snd_sof_dev *sdev, unsigned int core_mask)
242 struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;
243 const struct sof_intel_dsp_desc *chip = hda->desc;
246 /* restrict core_mask to host managed cores mask */
247 core_mask &= chip->host_managed_cores_mask;
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))
254 ret = hda_dsp_core_power_up(sdev, core_mask);
256 dev_err(sdev->dev, "error: dsp core power up failed: core_mask %x\n",
261 return hda_dsp_core_run(sdev, core_mask);
264 int hda_dsp_core_reset_power_down(struct snd_sof_dev *sdev,
265 unsigned int core_mask)
267 struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;
268 const struct sof_intel_dsp_desc *chip = hda->desc;
271 /* restrict core_mask to host managed cores mask */
272 core_mask &= chip->host_managed_cores_mask;
274 /* return if core_mask is not valid */
278 /* place core in reset prior to power down */
279 ret = hda_dsp_core_stall_reset(sdev, core_mask);
281 dev_err(sdev->dev, "error: dsp core reset failed: core_mask %x\n",
286 /* power down core */
287 ret = hda_dsp_core_power_down(sdev, core_mask);
289 dev_err(sdev->dev, "error: dsp core power down fail mask %x: %d\n",
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",
304 void hda_dsp_ipc_int_enable(struct snd_sof_dev *sdev)
306 struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;
307 const struct sof_intel_dsp_desc *chip = hda->desc;
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);
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);
319 void hda_dsp_ipc_int_disable(struct snd_sof_dev *sdev)
321 struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;
322 const struct sof_intel_dsp_desc *chip = hda->desc;
324 /* disable IPC interrupt */
325 snd_sof_dsp_update_bits(sdev, HDA_DSP_BAR, HDA_DSP_REG_ADSPIC,
326 HDA_DSP_ADSPIC_IPC, 0);
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);
333 static int hda_dsp_wait_d0i3c_done(struct snd_sof_dev *sdev)
335 struct hdac_bus *bus = sof_to_bus(sdev);
336 int retry = HDA_DSP_REG_POLL_RETRY_COUNT;
338 while (snd_hdac_chip_readb(bus, VS_D0I3C) & SOF_HDA_VS_D0I3C_CIP) {
341 usleep_range(10, 15);
347 static int hda_dsp_send_pm_gate_ipc(struct snd_sof_dev *sdev, u32 flags)
349 struct sof_ipc_pm_gate pm_gate;
350 struct sof_ipc_reply reply;
352 memset(&pm_gate, 0, sizeof(pm_gate));
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;
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,
365 static int hda_dsp_update_d0i3c_register(struct snd_sof_dev *sdev, u8 value)
367 struct hdac_bus *bus = sof_to_bus(sdev);
370 /* Write to D0I3C after Command-In-Progress bit is cleared */
371 ret = hda_dsp_wait_d0i3c_done(sdev);
373 dev_err(bus->dev, "CIP timeout before D0I3C update!\n");
377 /* Update D0I3C register */
378 snd_hdac_chip_updateb(bus, VS_D0I3C, SOF_HDA_VS_D0I3C_I3, value);
380 /* Wait for cmd in progress to be cleared before exiting the function */
381 ret = hda_dsp_wait_d0i3c_done(sdev);
383 dev_err(bus->dev, "CIP timeout after D0I3C update!\n");
387 dev_vdbg(bus->dev, "D0I3C updated, register = 0x%x\n",
388 snd_hdac_chip_readb(bus, VS_D0I3C));
393 static int hda_dsp_set_D0_state(struct snd_sof_dev *sdev,
394 const struct sof_dsp_power_state *target_state)
401 * Sanity check for illegal state transitions
402 * The only allowed transitions are:
407 switch (sdev->dsp_power_state.state) {
409 /* Follow the sequence below for D0 substate transitions */
412 /* Follow regular flow for D3 -> D0 transition */
415 dev_err(sdev->dev, "error: transition from %d to %d not allowed\n",
416 sdev->dsp_power_state.state, target_state->state);
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;
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
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;
435 /* prevent power gating in D0I0 */
439 /* update D0I3C register */
440 ret = hda_dsp_update_d0i3c_register(sdev, value);
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.
449 ret = hda_dsp_send_pm_gate_ipc(sdev, flags);
452 "error: PM_GATE ipc error %d\n", ret);
459 /* fallback to the previous register value */
460 value = value ? 0 : SOF_HDA_VS_D0I3C_I3;
463 * This can fail but return the IPC error to signal that
464 * the state change failed.
466 hda_dsp_update_d0i3c_register(sdev, value);
471 /* helper to log DSP state */
472 static void hda_dsp_state_log(struct snd_sof_dev *sdev)
474 switch (sdev->dsp_power_state.state) {
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");
480 case SOF_HDA_DSP_PM_D0I3:
481 dev_dbg(sdev->dev, "Current DSP power state: D0I3\n");
484 dev_dbg(sdev->dev, "Unknown DSP D0 substate: %d\n",
485 sdev->dsp_power_state.substate);
490 dev_dbg(sdev->dev, "Current DSP power state: D1\n");
493 dev_dbg(sdev->dev, "Current DSP power state: D2\n");
495 case SOF_DSP_PM_D3_HOT:
496 dev_dbg(sdev->dev, "Current DSP power state: D3_HOT\n");
499 dev_dbg(sdev->dev, "Current DSP power state: D3\n");
501 case SOF_DSP_PM_D3_COLD:
502 dev_dbg(sdev->dev, "Current DSP power state: D3_COLD\n");
505 dev_dbg(sdev->dev, "Unknown DSP power state: %d\n",
506 sdev->dsp_power_state.state);
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.
518 int hda_dsp_set_power_state(struct snd_sof_dev *sdev,
519 const struct sof_dsp_power_state *target_state)
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.
530 if (target_state->substate == SOF_HDA_DSP_PM_D0I3 &&
531 sdev->system_suspend_target == SOF_SUSPEND_S0IX)
535 * For all other cases, return without doing anything if
536 * the DSP is already in the target state.
538 if (target_state->state == sdev->dsp_power_state.state &&
539 target_state->substate == sdev->dsp_power_state.substate)
543 switch (target_state->state) {
545 ret = hda_dsp_set_D0_state(sdev, target_state);
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)
554 "error: transition from %d to %d not allowed\n",
555 sdev->dsp_power_state.state, target_state->state);
558 dev_err(sdev->dev, "error: target state unsupported %d\n",
559 target_state->state);
564 "failed to set requested target DSP state %d substate %d\n",
565 target_state->state, target_state->substate);
569 sdev->dsp_power_state = *target_state;
570 hda_dsp_state_log(sdev);
575 * Audio DSP states may transform as below:-
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 | | | | | |
586 * | | System| | | | | |
587 * | | resume| | S3/S0IX | | | |
588 * | | | | suspend | | S0IX | |
589 * | | | | | |suspend | |
592 * +-v---+-----------+--v-------+ | | +------+----v----+
593 * | | | +-----------> |
594 * | D3 (suspended) | | | D0I3 |
595 * | | +--------------+ |
596 * | | System resume | |
597 * +----------------------------+ +----------------+
599 * S0IX suspend: The DSP is in D0I3 if any D0I3-compatible streams
600 * ignored the suspend trigger. Otherwise the DSP
604 static int hda_suspend(struct snd_sof_dev *sdev, bool runtime_suspend)
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);
613 hda_sdw_int_enable(sdev, false);
615 /* disable IPC interrupts */
616 hda_dsp_ipc_int_disable(sdev);
618 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
620 hda_codec_jack_wake_enable(sdev);
622 /* power down all hda link */
623 snd_hdac_ext_bus_link_power_down_all(bus);
627 ret = hda_dsp_core_reset_power_down(sdev, chip->host_managed_cores_mask);
630 "error: failed to power down core during suspend\n");
634 /* disable ppcap interrupt */
635 hda_dsp_ctrl_ppcap_enable(sdev, false);
636 hda_dsp_ctrl_ppcap_int_enable(sdev, false);
638 /* disable hda bus irq and streams */
639 hda_dsp_ctrl_stop_chip(sdev);
641 /* disable LP retention mode */
642 snd_sof_pci_update_bits(sdev, PCI_PGCTL,
643 PCI_PGCTL_LSRMD_MASK, PCI_PGCTL_LSRMD_MASK);
645 /* reset controller */
646 ret = hda_dsp_ctrl_link_reset(sdev, true);
649 "error: failed to reset controller during suspend\n");
653 /* display codec can powered off after link reset */
654 hda_codec_i915_display_power(sdev, false);
659 static int hda_resume(struct snd_sof_dev *sdev, bool runtime_resume)
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;
667 /* display codec must be powered before link reset */
668 hda_codec_i915_display_power(sdev, true);
671 * clear TCSEL to clear playback on some HD Audio
672 * codecs. PCI TCSEL is defined in the Intel manuals.
674 snd_sof_pci_update_bits(sdev, PCI_TCSEL, 0x07, 0);
676 /* reset and start hda controller */
677 ret = hda_dsp_ctrl_init_chip(sdev, true);
680 "error: failed to start controller after resume\n");
684 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
685 /* check jack status */
687 hda_codec_jack_check(sdev);
689 /* turn off the links that were off before suspend */
690 list_for_each_entry(hlink, &bus->hlink_list, list) {
691 if (!hlink->ref_count)
692 snd_hdac_ext_bus_link_power_down(hlink);
695 /* check dma status and clean up CORB/RIRB buffers */
696 if (!bus->cmd_dma_state)
697 snd_hdac_bus_stop_cmd_io(bus);
700 /* enable ppcap interrupt */
701 hda_dsp_ctrl_ppcap_enable(sdev, true);
702 hda_dsp_ctrl_ppcap_int_enable(sdev, true);
707 int hda_dsp_resume(struct snd_sof_dev *sdev)
709 struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;
710 struct pci_dev *pci = to_pci_dev(sdev->dev);
711 const struct sof_dsp_power_state target_state = {
712 .state = SOF_DSP_PM_D0,
713 .substate = SOF_HDA_DSP_PM_D0I0,
715 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
716 struct hdac_bus *bus = sof_to_bus(sdev);
717 struct hdac_ext_link *hlink = NULL;
721 /* resume from D0I3 */
722 if (sdev->dsp_power_state.state == SOF_DSP_PM_D0) {
723 hda_codec_i915_display_power(sdev, true);
725 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
726 /* power up links that were active before suspend */
727 list_for_each_entry(hlink, &bus->hlink_list, list) {
728 if (hlink->ref_count) {
729 ret = snd_hdac_ext_bus_link_power_up(hlink);
732 "error %x in %s: failed to power up links",
739 /* set up CORB/RIRB buffers if was on before suspend */
740 if (bus->cmd_dma_state)
741 snd_hdac_bus_init_cmd_io(bus);
744 /* Set DSP power state */
745 ret = snd_sof_dsp_set_power_state(sdev, &target_state);
747 dev_err(sdev->dev, "error: setting dsp state %d substate %d\n",
748 target_state.state, target_state.substate);
752 /* restore L1SEN bit */
753 if (hda->l1_support_changed)
754 snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR,
756 HDA_VS_INTEL_EM2_L1SEN, 0);
758 /* restore and disable the system wakeup */
759 pci_restore_state(pci);
760 disable_irq_wake(pci->irq);
764 /* init hda controller. DSP cores will be powered up during fw boot */
765 ret = hda_resume(sdev, false);
769 return snd_sof_dsp_set_power_state(sdev, &target_state);
772 int hda_dsp_runtime_resume(struct snd_sof_dev *sdev)
774 const struct sof_dsp_power_state target_state = {
775 .state = SOF_DSP_PM_D0,
779 /* init hda controller. DSP cores will be powered up during fw boot */
780 ret = hda_resume(sdev, true);
784 return snd_sof_dsp_set_power_state(sdev, &target_state);
787 int hda_dsp_runtime_idle(struct snd_sof_dev *sdev)
789 struct hdac_bus *hbus = sof_to_bus(sdev);
791 if (hbus->codec_powered) {
792 dev_dbg(sdev->dev, "some codecs still powered (%08X), not idle\n",
793 (unsigned int)hbus->codec_powered);
800 int hda_dsp_runtime_suspend(struct snd_sof_dev *sdev)
802 const struct sof_dsp_power_state target_state = {
803 .state = SOF_DSP_PM_D3,
807 /* stop hda controller and power dsp off */
808 ret = hda_suspend(sdev, true);
812 return snd_sof_dsp_set_power_state(sdev, &target_state);
815 int hda_dsp_suspend(struct snd_sof_dev *sdev, u32 target_state)
817 struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;
818 struct hdac_bus *bus = sof_to_bus(sdev);
819 struct pci_dev *pci = to_pci_dev(sdev->dev);
820 const struct sof_dsp_power_state target_dsp_state = {
821 .state = target_state,
822 .substate = target_state == SOF_DSP_PM_D0 ?
823 SOF_HDA_DSP_PM_D0I3 : 0,
827 /* cancel any attempt for DSP D0I3 */
828 cancel_delayed_work_sync(&hda->d0i3_work);
830 if (target_state == SOF_DSP_PM_D0) {
831 /* we can't keep a wakeref to display driver at suspend */
832 hda_codec_i915_display_power(sdev, false);
834 /* Set DSP power state */
835 ret = snd_sof_dsp_set_power_state(sdev, &target_dsp_state);
837 dev_err(sdev->dev, "error: setting dsp state %d substate %d\n",
838 target_dsp_state.state,
839 target_dsp_state.substate);
843 /* enable L1SEN to make sure the system can enter S0Ix */
844 hda->l1_support_changed =
845 snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR,
847 HDA_VS_INTEL_EM2_L1SEN,
848 HDA_VS_INTEL_EM2_L1SEN);
850 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
851 /* stop the CORB/RIRB DMA if it is On */
852 if (bus->cmd_dma_state)
853 snd_hdac_bus_stop_cmd_io(bus);
855 /* no link can be powered in s0ix state */
856 ret = snd_hdac_ext_bus_link_power_down_all(bus);
859 "error %d in %s: failed to power down links",
865 /* enable the system waking up via IPC IRQ */
866 enable_irq_wake(pci->irq);
871 /* stop hda controller and power dsp off */
872 ret = hda_suspend(sdev, false);
874 dev_err(bus->dev, "error: suspending dsp\n");
878 return snd_sof_dsp_set_power_state(sdev, &target_dsp_state);
881 int hda_dsp_set_hw_params_upon_resume(struct snd_sof_dev *sdev)
883 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
884 struct hdac_bus *bus = sof_to_bus(sdev);
885 struct snd_soc_pcm_runtime *rtd;
886 struct hdac_ext_stream *stream;
887 struct hdac_ext_link *link;
888 struct hdac_stream *s;
892 /* set internal flag for BE */
893 list_for_each_entry(s, &bus->stream_list, list) {
894 stream = stream_to_hdac_ext_stream(s);
897 * clear stream. This should already be taken care for running
898 * streams when the SUSPEND trigger is called. But paused
899 * streams do not get suspended, so this needs to be done
900 * explicitly during suspend.
902 if (stream->link_substream) {
903 rtd = asoc_substream_to_rtd(stream->link_substream);
904 name = asoc_rtd_to_codec(rtd, 0)->component->name;
905 link = snd_hdac_ext_bus_get_link(bus, name);
909 stream->link_prepared = 0;
911 if (hdac_stream(stream)->direction ==
912 SNDRV_PCM_STREAM_CAPTURE)
915 stream_tag = hdac_stream(stream)->stream_tag;
916 snd_hdac_ext_link_clear_stream_id(link, stream_tag);
923 void hda_dsp_d0i3_work(struct work_struct *work)
925 struct sof_intel_hda_dev *hdev = container_of(work,
926 struct sof_intel_hda_dev,
928 struct hdac_bus *bus = &hdev->hbus.core;
929 struct snd_sof_dev *sdev = dev_get_drvdata(bus->dev);
930 struct sof_dsp_power_state target_state;
933 target_state.state = SOF_DSP_PM_D0;
935 /* DSP can enter D0I3 iff only D0I3-compatible streams are active */
936 if (snd_sof_dsp_only_d0i3_compatible_stream_active(sdev))
937 target_state.substate = SOF_HDA_DSP_PM_D0I3;
939 target_state.substate = SOF_HDA_DSP_PM_D0I0;
942 if (target_state.substate == SOF_HDA_DSP_PM_D0I0)
945 /* This can fail but error cannot be propagated */
946 ret = snd_sof_dsp_set_power_state(sdev, &target_state);
948 dev_err_ratelimited(sdev->dev,
949 "error: failed to set DSP state %d substate %d\n",
950 target_state.state, target_state.substate);