[linux-2.6-block.git] / sound / soc / sof / pm.c

// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
//
// This file is provided under a dual BSD/GPLv2 license.  When using or
// redistributing this file, you may do so under either license.
//
// Copyright(c) 2018 Intel Corporation. All rights reserved.
//
// Author: Liam Girdwood <liam.r.girdwood@linux.intel.com>
//

#include "ops.h"
#include "sof-priv.h"
#include "sof-audio.h"

/*
 * Helper function to determine the target DSP state during
 * system suspend. This function only cares about the device
 * D-states. Platform-specific substates, if any, should be
 * handled by the platform-specific parts.
 */
static u32 snd_sof_dsp_power_target(struct snd_sof_dev *sdev)
{
	u32 target_dsp_state;

	switch (sdev->system_suspend_target) {
	case SOF_SUSPEND_S5:
	case SOF_SUSPEND_S4:
		/* DSP should be in D3 if the system is suspending to S3+ */
	case SOF_SUSPEND_S3:
		/* DSP should be in D3 if the system is suspending to S3 */
		target_dsp_state = SOF_DSP_PM_D3;
		break;
	case SOF_SUSPEND_S0IX:
		/*
		 * Currently, the only criterion for retaining the DSP in D0
		 * is that there are streams that ignored the suspend trigger.
		 * Additional criteria such Soundwire clock-stop mode and
		 * device suspend latency considerations will be added later.
		 */
		if (snd_sof_stream_suspend_ignored(sdev))
			target_dsp_state = SOF_DSP_PM_D0;
		else
			target_dsp_state = SOF_DSP_PM_D3;
		break;
	default:
		/* This case would be during runtime suspend */
		target_dsp_state = SOF_DSP_PM_D3;
		break;
	}

	return target_dsp_state;
}

#if IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG_ENABLE_DEBUGFS_CACHE)
static void sof_cache_debugfs(struct snd_sof_dev *sdev)
{
	struct snd_sof_dfsentry *dfse;

	list_for_each_entry(dfse, &sdev->dfsentry_list, list) {

		/* nothing to do if debugfs buffer is not IO mem */
		if (dfse->type == SOF_DFSENTRY_TYPE_BUF)
			continue;

		/* cache memory that is only accessible in D0 */
		if (dfse->access_type == SOF_DEBUGFS_ACCESS_D0_ONLY)
			memcpy_fromio(dfse->cache_buf, dfse->io_mem,
				      dfse->size);
	}
}
#endif

static int sof_resume(struct device *dev, bool runtime_resume)
{
	struct snd_sof_dev *sdev = dev_get_drvdata(dev);
	const struct sof_ipc_pm_ops *pm_ops = sof_ipc_get_ops(sdev, pm);
	const struct sof_ipc_tplg_ops *tplg_ops = sof_ipc_get_ops(sdev, tplg);
	u32 old_state = sdev->dsp_power_state.state;
	int ret;

	/* do nothing if dsp resume callbacks are not set */
	if (!runtime_resume && !sof_ops(sdev)->resume)
		return 0;

	if (runtime_resume && !sof_ops(sdev)->runtime_resume)
		return 0;

	/* DSP was never successfully started, nothing to resume */
	if (sdev->first_boot)
		return 0;

	/*
	 * if the runtime_resume flag is set, call the runtime_resume routine
	 * or else call the system resume routine
	 */
	if (runtime_resume)
		ret = snd_sof_dsp_runtime_resume(sdev);
	else
		ret = snd_sof_dsp_resume(sdev);
	if (ret < 0) {
		dev_err(sdev->dev,
			"error: failed to power up DSP after resume\n");
		return ret;
	}

	if (sdev->dspless_mode_selected) {
		sof_set_fw_state(sdev, SOF_DSPLESS_MODE);
		return 0;
	}

	/*
	 * Nothing further to be done for platforms that support the low power
	 * D0 substate. Resume trace and return when resuming from
	 * low-power D0 substate
	 */
	if (!runtime_resume && sof_ops(sdev)->set_power_state &&
	    old_state == SOF_DSP_PM_D0) {
		ret = sof_fw_trace_resume(sdev);
		if (ret < 0)
			/* non fatal */
			dev_warn(sdev->dev,
				 "failed to enable trace after resume %d\n", ret);
		return 0;
	}

	sof_set_fw_state(sdev, SOF_FW_BOOT_PREPARE);

	/* load the firmware */
	ret = snd_sof_load_firmware(sdev);
	if (ret < 0) {
		dev_err(sdev->dev,
			"error: failed to load DSP firmware after resume %d\n",
			ret);
		sof_set_fw_state(sdev, SOF_FW_BOOT_FAILED);
		return ret;
	}

	sof_set_fw_state(sdev, SOF_FW_BOOT_IN_PROGRESS);

	/*
	 * Boot the firmware. The FW boot status will be modified
	 * in snd_sof_run_firmware() depending on the outcome.
	 */
	ret = snd_sof_run_firmware(sdev);
	if (ret < 0) {
		dev_err(sdev->dev,
			"error: failed to boot DSP firmware after resume %d\n",
			ret);
		sof_set_fw_state(sdev, SOF_FW_BOOT_FAILED);
		return ret;
	}

	/* resume DMA trace */
	ret = sof_fw_trace_resume(sdev);
	if (ret < 0) {
		/* non fatal */
		dev_warn(sdev->dev,
			 "warning: failed to init trace after resume %d\n",
			 ret);
	}

	/* restore pipelines */
	if (tplg_ops && tplg_ops->set_up_all_pipelines) {
		ret = tplg_ops->set_up_all_pipelines(sdev, false);
		if (ret < 0) {
			dev_err(sdev->dev, "Failed to restore pipeline after resume %d\n", ret);
			return ret;
		}
	}

	/* Notify clients not managed by pm framework about core resume */
	sof_resume_clients(sdev);

	/* notify DSP of system resume */
	if (pm_ops && pm_ops->ctx_restore) {
		ret = pm_ops->ctx_restore(sdev);
		if (ret < 0)
			dev_err(sdev->dev, "ctx_restore IPC error during resume: %d\n", ret);
	}

	return ret;
}

static int sof_suspend(struct device *dev, bool runtime_suspend)
{
	struct snd_sof_dev *sdev = dev_get_drvdata(dev);
	const struct sof_ipc_pm_ops *pm_ops = sof_ipc_get_ops(sdev, pm);
	const struct sof_ipc_tplg_ops *tplg_ops = sof_ipc_get_ops(sdev, tplg);
	pm_message_t pm_state;
	u32 target_state = snd_sof_dsp_power_target(sdev);
	int ret;

	/* do nothing if dsp suspend callback is not set */
	if (!runtime_suspend && !sof_ops(sdev)->suspend)
		return 0;

	if (runtime_suspend && !sof_ops(sdev)->runtime_suspend)
		return 0;

	if (tplg_ops && tplg_ops->tear_down_all_pipelines)
		tplg_ops->tear_down_all_pipelines(sdev, false);

	if (sdev->fw_state != SOF_FW_BOOT_COMPLETE)
		goto suspend;

	/* prepare for streams to be resumed properly upon resume */
	if (!runtime_suspend) {
		ret = snd_sof_dsp_hw_params_upon_resume(sdev);
		if (ret < 0) {
			dev_err(sdev->dev,
				"error: setting hw_params flag during suspend %d\n",
				ret);
			return ret;
		}
	}

	pm_state.event = target_state;

	/* Skip to platform-specific suspend if DSP is entering D0 */
	if (target_state == SOF_DSP_PM_D0) {
		sof_fw_trace_suspend(sdev, pm_state);
		/* Notify clients not managed by pm framework about core suspend */
		sof_suspend_clients(sdev, pm_state);
		goto suspend;
	}

	/* suspend DMA trace */
	sof_fw_trace_suspend(sdev, pm_state);

	/* Notify clients not managed by pm framework about core suspend */
	sof_suspend_clients(sdev, pm_state);

#if IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG_ENABLE_DEBUGFS_CACHE)
	/* cache debugfs contents during runtime suspend */
	if (runtime_suspend)
		sof_cache_debugfs(sdev);
#endif
	/* notify DSP of upcoming power down */
	if (pm_ops && pm_ops->ctx_save) {
		ret = pm_ops->ctx_save(sdev);
		if (ret == -EBUSY || ret == -EAGAIN) {
			/*
			 * runtime PM has logic to handle -EBUSY/-EAGAIN so
			 * pass these errors up
			 */
			dev_err(sdev->dev, "ctx_save IPC error during suspend: %d\n", ret);
			return ret;
		} else if (ret < 0) {
			/* FW in unexpected state, continue to power down */
			dev_warn(sdev->dev, "ctx_save IPC error: %d, proceeding with suspend\n",
				 ret);
		}
	}

suspend:

	/* return if the DSP was not probed successfully */
	if (sdev->fw_state == SOF_FW_BOOT_NOT_STARTED)
		return 0;

	/* platform-specific suspend */
	if (runtime_suspend)
		ret = snd_sof_dsp_runtime_suspend(sdev);
	else
		ret = snd_sof_dsp_suspend(sdev, target_state);
	if (ret < 0)
		dev_err(sdev->dev,
			"error: failed to power down DSP during suspend %d\n",
			ret);

	/* Do not reset FW state if DSP is in D0 */
	if (target_state == SOF_DSP_PM_D0)
		return ret;

	/* reset FW state */
	sof_set_fw_state(sdev, SOF_FW_BOOT_NOT_STARTED);
	sdev->enabled_cores_mask = 0;

	return ret;
}

int snd_sof_dsp_power_down_notify(struct snd_sof_dev *sdev)
{
	const struct sof_ipc_pm_ops *pm_ops = sof_ipc_get_ops(sdev, pm);

	/* Notify DSP of upcoming power down */
	if (sof_ops(sdev)->remove && pm_ops && pm_ops->ctx_save)
		return pm_ops->ctx_save(sdev);

	return 0;
}

int snd_sof_runtime_suspend(struct device *dev)
{
	return sof_suspend(dev, true);
}
EXPORT_SYMBOL(snd_sof_runtime_suspend);

int snd_sof_runtime_idle(struct device *dev)
{
	struct snd_sof_dev *sdev = dev_get_drvdata(dev);

	return snd_sof_dsp_runtime_idle(sdev);
}
EXPORT_SYMBOL(snd_sof_runtime_idle);

int snd_sof_runtime_resume(struct device *dev)
{
	return sof_resume(dev, true);
}
EXPORT_SYMBOL(snd_sof_runtime_resume);

int snd_sof_resume(struct device *dev)
{
	return sof_resume(dev, false);
}
EXPORT_SYMBOL(snd_sof_resume);

int snd_sof_suspend(struct device *dev)
{
	return sof_suspend(dev, false);
}
EXPORT_SYMBOL(snd_sof_suspend);

int snd_sof_prepare(struct device *dev)
{
	struct snd_sof_dev *sdev = dev_get_drvdata(dev);
	const struct sof_dev_desc *desc = sdev->pdata->desc;

	/* will suspend to S3 by default */
	sdev->system_suspend_target = SOF_SUSPEND_S3;

	/*
	 * if the firmware is crashed or boot failed then we try to aim for S3
	 * to reboot the firmware
	 */
	if (sdev->fw_state == SOF_FW_CRASHED ||
	    sdev->fw_state == SOF_FW_BOOT_FAILED)
		return 0;

	if (!desc->use_acpi_target_states)
		return 0;

#if defined(CONFIG_ACPI)
	switch (acpi_target_system_state()) {
	case ACPI_STATE_S0:
		sdev->system_suspend_target = SOF_SUSPEND_S0IX;
		break;
	case ACPI_STATE_S1:
	case ACPI_STATE_S2:
	case ACPI_STATE_S3:
		sdev->system_suspend_target = SOF_SUSPEND_S3;
		break;
	case ACPI_STATE_S4:
		sdev->system_suspend_target = SOF_SUSPEND_S4;
		break;
	case ACPI_STATE_S5:
		sdev->system_suspend_target = SOF_SUSPEND_S5;
		break;
	default:
		break;
	}
#endif

	return 0;
}
EXPORT_SYMBOL(snd_sof_prepare);

void snd_sof_complete(struct device *dev)
{
	struct snd_sof_dev *sdev = dev_get_drvdata(dev);

	sdev->system_suspend_target = SOF_SUSPEND_NONE;
}
EXPORT_SYMBOL(snd_sof_complete);
Commit	Line	Data
e149ca29	1	// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
8920153c LG	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"
ee1e79b7	13	#include "sof-audio.h"
8920153c	14
700d1677 RS	15	/*
	16	* Helper function to determine the target DSP state during
	17	* system suspend. This function only cares about the device
	18	* D-states. Platform-specific substates, if any, should be
	19	* handled by the platform-specific parts.
	20	*/
	21	static u32 snd_sof_dsp_power_target(struct snd_sof_dev *sdev)
	22	{
	23	u32 target_dsp_state;
	24
	25	switch (sdev->system_suspend_target) {
9d2d4627 PLB	26	case SOF_SUSPEND_S5:
	27	case SOF_SUSPEND_S4:
	28	/* DSP should be in D3 if the system is suspending to S3+ */
700d1677 RS	29	case SOF_SUSPEND_S3:
	30	/* DSP should be in D3 if the system is suspending to S3 */
	31	target_dsp_state = SOF_DSP_PM_D3;
	32	break;
	33	case SOF_SUSPEND_S0IX:
	34	/*
	35	* Currently, the only criterion for retaining the DSP in D0
	36	* is that there are streams that ignored the suspend trigger.
	37	* Additional criteria such Soundwire clock-stop mode and
	38	* device suspend latency considerations will be added later.
	39	*/
	40	if (snd_sof_stream_suspend_ignored(sdev))
	41	target_dsp_state = SOF_DSP_PM_D0;
	42	else
	43	target_dsp_state = SOF_DSP_PM_D3;
	44	break;
	45	default:
	46	/* This case would be during runtime suspend */
	47	target_dsp_state = SOF_DSP_PM_D3;
	48	break;
	49	}
	50
	51	return target_dsp_state;
	52	}
	53
8920153c LG	54	#if IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG_ENABLE_DEBUGFS_CACHE)
	55	static void sof_cache_debugfs(struct snd_sof_dev *sdev)
	56	{
	57	struct snd_sof_dfsentry *dfse;
	58
	59	list_for_each_entry(dfse, &sdev->dfsentry_list, list) {
	60
	61	/* nothing to do if debugfs buffer is not IO mem */
	62	if (dfse->type == SOF_DFSENTRY_TYPE_BUF)
	63	continue;
	64
	65	/* cache memory that is only accessible in D0 */
	66	if (dfse->access_type == SOF_DEBUGFS_ACCESS_D0_ONLY)
	67	memcpy_fromio(dfse->cache_buf, dfse->io_mem,
	68	dfse->size);
	69	}
	70	}
	71	#endif
	72
	73	static int sof_resume(struct device *dev, bool runtime_resume)
	74	{
	75	struct snd_sof_dev *sdev = dev_get_drvdata(dev);
510758ee PU	76	const struct sof_ipc_pm_ops *pm_ops = sof_ipc_get_ops(sdev, pm);
510758ee PU	77	const struct sof_ipc_tplg_ops *tplg_ops = sof_ipc_get_ops(sdev, tplg);
61e285ca	78	u32 old_state = sdev->dsp_power_state.state;
8920153c LG	79	int ret;
	80
	81	/* do nothing if dsp resume callbacks are not set */
c26fde3b DB	82	if (!runtime_resume && !sof_ops(sdev)->resume)
	83	return 0;
	84
	85	if (runtime_resume && !sof_ops(sdev)->runtime_resume)
8920153c LG	86	return 0;
8920153c LG	87
410e5e55 PLB	88	/* DSP was never successfully started, nothing to resume */
	89	if (sdev->first_boot)
	90	return 0;
	91
8920153c LG	92	/*
	93	* if the runtime_resume flag is set, call the runtime_resume routine
	94	* or else call the system resume routine
	95	*/
	96	if (runtime_resume)
	97	ret = snd_sof_dsp_runtime_resume(sdev);
	98	else
	99	ret = snd_sof_dsp_resume(sdev);
	100	if (ret < 0) {
	101	dev_err(sdev->dev,
	102	"error: failed to power up DSP after resume\n");
	103	return ret;
	104	}
	105
28d40e7a PU	106	if (sdev->dspless_mode_selected) {
	107	sof_set_fw_state(sdev, SOF_DSPLESS_MODE);
	108	return 0;
	109	}
	110
fc907cc5 RS	111	/*
fc907cc5 RS	112	* Nothing further to be done for platforms that support the low power
249ee180 LY	113	* D0 substate. Resume trace and return when resuming from
249ee180 LY	114	* low-power D0 substate
fc907cc5 RS	115	*/
fc907cc5 RS	116	if (!runtime_resume && sof_ops(sdev)->set_power_state &&
249ee180	117	old_state == SOF_DSP_PM_D0) {
1dedbe4f	118	ret = sof_fw_trace_resume(sdev);
249ee180 LY	119	if (ret < 0)
	120	/* non fatal */
	121	dev_warn(sdev->dev,
	122	"failed to enable trace after resume %d\n", ret);
fb9a8119	123	return 0;
249ee180	124	}
fb9a8119	125
58a5c9a4	126	sof_set_fw_state(sdev, SOF_FW_BOOT_PREPARE);
6ca5cecb	127
8920153c LG	128	/* load the firmware */
	129	ret = snd_sof_load_firmware(sdev);
	130	if (ret < 0) {
	131	dev_err(sdev->dev,
	132	"error: failed to load DSP firmware after resume %d\n",
	133	ret);
e2406275	134	sof_set_fw_state(sdev, SOF_FW_BOOT_FAILED);
8920153c LG	135	return ret;
	136	}
	137
58a5c9a4	138	sof_set_fw_state(sdev, SOF_FW_BOOT_IN_PROGRESS);
6ca5cecb RS	139
	140	/*
	141	* Boot the firmware. The FW boot status will be modified
	142	* in snd_sof_run_firmware() depending on the outcome.
	143	*/
8920153c LG	144	ret = snd_sof_run_firmware(sdev);
	145	if (ret < 0) {
	146	dev_err(sdev->dev,
	147	"error: failed to boot DSP firmware after resume %d\n",
	148	ret);
e2406275	149	sof_set_fw_state(sdev, SOF_FW_BOOT_FAILED);
8920153c LG	150	return ret;
	151	}
	152
758f24d4	153	/* resume DMA trace */
1dedbe4f	154	ret = sof_fw_trace_resume(sdev);
8920153c LG	155	if (ret < 0) {
	156	/* non fatal */
	157	dev_warn(sdev->dev,
	158	"warning: failed to init trace after resume %d\n",
	159	ret);
	160	}
	161
	162	/* restore pipelines */
510758ee	163	if (tplg_ops && tplg_ops->set_up_all_pipelines) {
31cd6e46 RS	164	ret = tplg_ops->set_up_all_pipelines(sdev, false);
	165	if (ret < 0) {
	166	dev_err(sdev->dev, "Failed to restore pipeline after resume %d\n", ret);
	167	return ret;
	168	}
8920153c LG	169	}
8920153c LG	170
1069967a PU	171	/* Notify clients not managed by pm framework about core resume */
	172	sof_resume_clients(sdev);
	173
8920153c	174	/* notify DSP of system resume */
657774ac RS	175	if (pm_ops && pm_ops->ctx_restore) {
	176	ret = pm_ops->ctx_restore(sdev);
	177	if (ret < 0)
	178	dev_err(sdev->dev, "ctx_restore IPC error during resume: %d\n", ret);
	179	}
8920153c LG	180
	181	return ret;
	182	}
	183
	184	static int sof_suspend(struct device *dev, bool runtime_suspend)
	185	{
	186	struct snd_sof_dev *sdev = dev_get_drvdata(dev);
510758ee PU	187	const struct sof_ipc_pm_ops *pm_ops = sof_ipc_get_ops(sdev, pm);
510758ee PU	188	const struct sof_ipc_tplg_ops *tplg_ops = sof_ipc_get_ops(sdev, tplg);
1069967a	189	pm_message_t pm_state;
6f95eec6	190	u32 target_state = snd_sof_dsp_power_target(sdev);
8920153c LG	191	int ret;
	192
	193	/* do nothing if dsp suspend callback is not set */
c26fde3b DB	194	if (!runtime_suspend && !sof_ops(sdev)->suspend)
	195	return 0;
	196
	197	if (runtime_suspend && !sof_ops(sdev)->runtime_suspend)
8920153c LG	198	return 0;
8920153c LG	199
d185e068 RS	200	if (tplg_ops && tplg_ops->tear_down_all_pipelines)
	201	tplg_ops->tear_down_all_pipelines(sdev, false);
	202
6ca5cecb	203	if (sdev->fw_state != SOF_FW_BOOT_COMPLETE)
fb9a8119	204	goto suspend;
8920153c	205
a1ce6e43	206	/* prepare for streams to be resumed properly upon resume */
7077a07a	207	if (!runtime_suspend) {
8e84b6a4	208	ret = snd_sof_dsp_hw_params_upon_resume(sdev);
7077a07a RS	209	if (ret < 0) {
	210	dev_err(sdev->dev,
	211	"error: setting hw_params flag during suspend %d\n",
	212	ret);
	213	return ret;
	214	}
	215	}
8920153c	216
1069967a	217	pm_state.event = target_state;
fb9a8119	218
61e285ca	219	/* Skip to platform-specific suspend if DSP is entering D0 */
1069967a	220	if (target_state == SOF_DSP_PM_D0) {
1dedbe4f	221	sof_fw_trace_suspend(sdev, pm_state);
1069967a PU	222	/* Notify clients not managed by pm framework about core suspend */
1069967a PU	223	sof_suspend_clients(sdev, pm_state);
fb9a8119	224	goto suspend;
1069967a	225	}
fb9a8119	226
758f24d4	227	/* suspend DMA trace */
1dedbe4f	228	sof_fw_trace_suspend(sdev, pm_state);
fb9a8119	229
1069967a PU	230	/* Notify clients not managed by pm framework about core suspend */
	231	sof_suspend_clients(sdev, pm_state);
	232
8920153c LG	233	#if IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG_ENABLE_DEBUGFS_CACHE)
	234	/* cache debugfs contents during runtime suspend */
	235	if (runtime_suspend)
	236	sof_cache_debugfs(sdev);
	237	#endif
	238	/* notify DSP of upcoming power down */
657774ac RS	239	if (pm_ops && pm_ops->ctx_save) {
	240	ret = pm_ops->ctx_save(sdev);
	241	if (ret == -EBUSY \|\| ret == -EAGAIN) {
	242	/*
	243	* runtime PM has logic to handle -EBUSY/-EAGAIN so
	244	* pass these errors up
	245	*/
	246	dev_err(sdev->dev, "ctx_save IPC error during suspend: %d\n", ret);
	247	return ret;
	248	} else if (ret < 0) {
	249	/* FW in unexpected state, continue to power down */
	250	dev_warn(sdev->dev, "ctx_save IPC error: %d, proceeding with suspend\n",
	251	ret);
	252	}
8920153c LG	253	}
8920153c LG	254
fb9a8119	255	suspend:
6ca5cecb RS	256
	257	/* return if the DSP was not probed successfully */
	258	if (sdev->fw_state == SOF_FW_BOOT_NOT_STARTED)
	259	return 0;
	260
fb9a8119	261	/* platform-specific suspend */
8920153c	262	if (runtime_suspend)
1c38c922	263	ret = snd_sof_dsp_runtime_suspend(sdev);
8920153c	264	else
61e285ca	265	ret = snd_sof_dsp_suspend(sdev, target_state);
8920153c LG	266	if (ret < 0)
	267	dev_err(sdev->dev,
	268	"error: failed to power down DSP during suspend %d\n",
	269	ret);
	270
61e285ca RS	271	/* Do not reset FW state if DSP is in D0 */
61e285ca RS	272	if (target_state == SOF_DSP_PM_D0)
fb9a8119 RS	273	return ret;
fb9a8119 RS	274
6ca5cecb	275	/* reset FW state */
58a5c9a4	276	sof_set_fw_state(sdev, SOF_FW_BOOT_NOT_STARTED);
b640e8a4	277	sdev->enabled_cores_mask = 0;
6ca5cecb	278
8920153c LG	279	return ret;
	280	}
	281
3541aef1 MR	282	int snd_sof_dsp_power_down_notify(struct snd_sof_dev *sdev)
3541aef1 MR	283	{
510758ee	284	const struct sof_ipc_pm_ops *pm_ops = sof_ipc_get_ops(sdev, pm);
657774ac	285
3541aef1	286	/* Notify DSP of upcoming power down */
657774ac RS	287	if (sof_ops(sdev)->remove && pm_ops && pm_ops->ctx_save)
657774ac RS	288	return pm_ops->ctx_save(sdev);
3541aef1 MR	289
	290	return 0;
	291	}
	292
8920153c LG	293	int snd_sof_runtime_suspend(struct device *dev)
	294	{
	295	return sof_suspend(dev, true);
	296	}
	297	EXPORT_SYMBOL(snd_sof_runtime_suspend);
	298
62fde977 KV	299	int snd_sof_runtime_idle(struct device *dev)
	300	{
	301	struct snd_sof_dev *sdev = dev_get_drvdata(dev);
	302
	303	return snd_sof_dsp_runtime_idle(sdev);
	304	}
	305	EXPORT_SYMBOL(snd_sof_runtime_idle);
	306
8920153c LG	307	int snd_sof_runtime_resume(struct device *dev)
	308	{
	309	return sof_resume(dev, true);
	310	}
	311	EXPORT_SYMBOL(snd_sof_runtime_resume);
	312
	313	int snd_sof_resume(struct device *dev)
	314	{
	315	return sof_resume(dev, false);
	316	}
	317	EXPORT_SYMBOL(snd_sof_resume);
	318
	319	int snd_sof_suspend(struct device *dev)
	320	{
	321	return sof_suspend(dev, false);
	322	}
	323	EXPORT_SYMBOL(snd_sof_suspend);
0b50b3b1 KJ	324
	325	int snd_sof_prepare(struct device *dev)
	326	{
	327	struct snd_sof_dev *sdev = dev_get_drvdata(dev);
43437d04 DB	328	const struct sof_dev_desc *desc = sdev->pdata->desc;
	329
	330	/* will suspend to S3 by default */
	331	sdev->system_suspend_target = SOF_SUSPEND_S3;
	332
4e1f8648	333	/*
b54b3a4e PU	334	* if the firmware is crashed or boot failed then we try to aim for S3
b54b3a4e PU	335	* to reboot the firmware
4e1f8648	336	*/
b54b3a4e PU	337	if (sdev->fw_state == SOF_FW_CRASHED \|\|
b54b3a4e PU	338	sdev->fw_state == SOF_FW_BOOT_FAILED)
4e1f8648 PU	339	return 0;
4e1f8648 PU	340
43437d04 DB	341	if (!desc->use_acpi_target_states)
43437d04 DB	342	return 0;
0b50b3b1 KJ	343
0b50b3b1 KJ	344	#if defined(CONFIG_ACPI)
a9330845 PLB	345	switch (acpi_target_system_state()) {
a9330845 PLB	346	case ACPI_STATE_S0:
043ae13b	347	sdev->system_suspend_target = SOF_SUSPEND_S0IX;
a9330845 PLB	348	break;
	349	case ACPI_STATE_S1:
	350	case ACPI_STATE_S2:
	351	case ACPI_STATE_S3:
	352	sdev->system_suspend_target = SOF_SUSPEND_S3;
	353	break;
9d2d4627 PLB	354	case ACPI_STATE_S4:
	355	sdev->system_suspend_target = SOF_SUSPEND_S4;
	356	break;
	357	case ACPI_STATE_S5:
	358	sdev->system_suspend_target = SOF_SUSPEND_S5;
	359	break;
a9330845 PLB	360	default:
	361	break;
	362	}
0b50b3b1 KJ	363	#endif
	364
	365	return 0;
	366	}
	367	EXPORT_SYMBOL(snd_sof_prepare);
	368
	369	void snd_sof_complete(struct device *dev)
	370	{
	371	struct snd_sof_dev *sdev = dev_get_drvdata(dev);
	372
043ae13b	373	sdev->system_suspend_target = SOF_SUSPEND_NONE;
0b50b3b1 KJ	374	}
0b50b3b1 KJ	375	EXPORT_SYMBOL(snd_sof_complete);