Merge branch 'pm-sleep'

* pm-sleep:
  ACPI / PM: Check low power idle constraints for debug only
  PM / s2idle: Rename platform operations structure
  PM / s2idle: Rename ->enter_freeze to ->enter_s2idle
  PM / s2idle: Rename freeze_state enum and related items
  PM / s2idle: Rename PM_SUSPEND_FREEZE to PM_SUSPEND_TO_IDLE
  ACPI / PM: Prefer suspend-to-idle over S3 on some systems
  platform/x86: intel-hid: Wake up Dell Latitude 7275 from suspend-to-idle
  PM / suspend: Define pr_fmt() in suspend.c
  PM / suspend: Use mem_sleep_labels[] strings in messages
  PM / sleep: Put pm_test under CONFIG_PM_SLEEP_DEBUG
  PM / sleep: Check pm_wakeup_pending() in __device_suspend_noirq()
  PM / core: Add error argument to dpm_show_time()
  PM / core: Split dpm_suspend_noirq() and dpm_resume_noirq()
  PM / s2idle: Rearrange the main suspend-to-idle loop
  PM / timekeeping: Print debug messages when requested
  PM / sleep: Mark suspend/hibernation start and finish
  PM / sleep: Do not print debug messages by default
  PM / suspend: Export pm_suspend_target_state

9 files changed, 372 insertions, 162 deletions

diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index df38e81cc672..d50a7b6ccddd 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -791,7 +791,7 @@ static int acpi_idle_enter(struct cpuidle_device *dev,
 	return index;
 }
 
-static void acpi_idle_enter_freeze(struct cpuidle_device *dev,
+static void acpi_idle_enter_s2idle(struct cpuidle_device *dev,
 				   struct cpuidle_driver *drv, int index)
 {
 	struct acpi_processor_cx *cx = per_cpu(acpi_cstate[index], dev->cpu);
@@ -876,14 +876,14 @@ static int acpi_processor_setup_cstates(struct acpi_processor *pr)
 			drv->safe_state_index = count;
 		}
 		/*
-		 * Halt-induced C1 is not good for ->enter_freeze, because it
+		 * Halt-induced C1 is not good for ->enter_s2idle, because it
 		 * re-enables interrupts on exit.  Moreover, C1 is generally not
 		 * particularly interesting from the suspend-to-idle angle, so
 		 * avoid C1 and the situations in which we may need to fall back
 		 * to it altogether.
 		 */
 		if (cx->type != ACPI_STATE_C1 && !acpi_idle_fallback_to_c1(pr))
-			state->enter_freeze = acpi_idle_enter_freeze;
+			state->enter_s2idle = acpi_idle_enter_s2idle;
 
 		count++;
 		if (count == CPUIDLE_STATE_MAX)
diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index fa8243c5c062..09460d9f9208 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -669,6 +669,7 @@ static const struct acpi_device_id lps0_device_ids[] = {
 
 #define ACPI_LPS0_DSM_UUID	"c4eb40a0-6cd2-11e2-bcfd-0800200c9a66"
 
+#define ACPI_LPS0_GET_DEVICE_CONSTRAINTS	1
 #define ACPI_LPS0_SCREEN_OFF	3
 #define ACPI_LPS0_SCREEN_ON	4
 #define ACPI_LPS0_ENTRY		5
@@ -680,6 +681,166 @@ static acpi_handle lps0_device_handle;
 static guid_t lps0_dsm_guid;
 static char lps0_dsm_func_mask;
 
+/* Device constraint entry structure */
+struct lpi_device_info {
+	char *name;
+	int enabled;
+	union acpi_object *package;
+};
+
+/* Constraint package structure */
+struct lpi_device_constraint {
+	int uid;
+	int min_dstate;
+	int function_states;
+};
+
+struct lpi_constraints {
+	acpi_handle handle;
+	int min_dstate;
+};
+
+static struct lpi_constraints *lpi_constraints_table;
+static int lpi_constraints_table_size;
+
+static void lpi_device_get_constraints(void)
+{
+	union acpi_object *out_obj;
+	int i;
+
+	out_obj = acpi_evaluate_dsm_typed(lps0_device_handle, &lps0_dsm_guid,
+					  1, ACPI_LPS0_GET_DEVICE_CONSTRAINTS,
+					  NULL, ACPI_TYPE_PACKAGE);
+
+	acpi_handle_debug(lps0_device_handle, "_DSM function 1 eval %s\n",
+			  out_obj ? "successful" : "failed");
+
+	if (!out_obj)
+		return;
+
+	lpi_constraints_table = kcalloc(out_obj->package.count,
+					sizeof(*lpi_constraints_table),
+					GFP_KERNEL);
+	if (!lpi_constraints_table)
+		goto free_acpi_buffer;
+
+	acpi_handle_debug(lps0_device_handle, "LPI: constraints list begin:\n");
+
+	for (i = 0; i < out_obj->package.count; i++) {
+		struct lpi_constraints *constraint;
+		acpi_status status;
+		union acpi_object *package = &out_obj->package.elements[i];
+		struct lpi_device_info info = { };
+		int package_count = 0, j;
+
+		if (!package)
+			continue;
+
+		for (j = 0; j < package->package.count; ++j) {
+			union acpi_object *element =
+					&(package->package.elements[j]);
+
+			switch (element->type) {
+			case ACPI_TYPE_INTEGER:
+				info.enabled = element->integer.value;
+				break;
+			case ACPI_TYPE_STRING:
+				info.name = element->string.pointer;
+				break;
+			case ACPI_TYPE_PACKAGE:
+				package_count = element->package.count;
+				info.package = element->package.elements;
+				break;
+			}
+		}
+
+		if (!info.enabled || !info.package || !info.name)
+			continue;
+
+		constraint = &lpi_constraints_table[lpi_constraints_table_size];
+
+		status = acpi_get_handle(NULL, info.name, &constraint->handle);
+		if (ACPI_FAILURE(status))
+			continue;
+
+		acpi_handle_debug(lps0_device_handle,
+				  "index:%d Name:%s\n", i, info.name);
+
+		constraint->min_dstate = -1;
+
+		for (j = 0; j < package_count; ++j) {
+			union acpi_object *info_obj = &info.package[j];
+			union acpi_object *cnstr_pkg;
+			union acpi_object *obj;
+			struct lpi_device_constraint dev_info;
+
+			switch (info_obj->type) {
+			case ACPI_TYPE_INTEGER:
+				/* version */
+				break;
+			case ACPI_TYPE_PACKAGE:
+				if (info_obj->package.count < 2)
+					break;
+
+				cnstr_pkg = info_obj->package.elements;
+				obj = &cnstr_pkg[0];
+				dev_info.uid = obj->integer.value;
+				obj = &cnstr_pkg[1];
+				dev_info.min_dstate = obj->integer.value;
+
+				acpi_handle_debug(lps0_device_handle,
+					"uid:%d min_dstate:%s\n",
+					dev_info.uid,
+					acpi_power_state_string(dev_info.min_dstate));
+
+				constraint->min_dstate = dev_info.min_dstate;
+				break;
+			}
+		}
+
+		if (constraint->min_dstate < 0) {
+			acpi_handle_debug(lps0_device_handle,
+					  "Incomplete constraint defined\n");
+			continue;
+		}
+
+		lpi_constraints_table_size++;
+	}
+
+	acpi_handle_debug(lps0_device_handle, "LPI: constraints list end\n");
+
+free_acpi_buffer:
+	ACPI_FREE(out_obj);
+}
+
+static void lpi_check_constraints(void)
+{
+	int i;
+
+	for (i = 0; i < lpi_constraints_table_size; ++i) {
+		struct acpi_device *adev;
+
+		if (acpi_bus_get_device(lpi_constraints_table[i].handle, &adev))
+			continue;
+
+		acpi_handle_debug(adev->handle,
+			"LPI: required min power state:%s current power state:%s\n",
+			acpi_power_state_string(lpi_constraints_table[i].min_dstate),
+			acpi_power_state_string(adev->power.state));
+
+		if (!adev->flags.power_manageable) {
+			acpi_handle_info(adev->handle, "LPI: Device not power manageble\n");
+			continue;
+		}
+
+		if (adev->power.state < lpi_constraints_table[i].min_dstate)
+			acpi_handle_info(adev->handle,
+				"LPI: Constraint not met; min power state:%s current power state:%s\n",
+				acpi_power_state_string(lpi_constraints_table[i].min_dstate),
+				acpi_power_state_string(adev->power.state));
+	}
+}
+
 static void acpi_sleep_run_lps0_dsm(unsigned int func)
 {
 	union acpi_object *out_obj;
@@ -714,6 +875,12 @@ static int lps0_device_attach(struct acpi_device *adev,
 		if ((bitmask & ACPI_S2IDLE_FUNC_MASK) == ACPI_S2IDLE_FUNC_MASK) {
 			lps0_dsm_func_mask = bitmask;
 			lps0_device_handle = adev->handle;
+			/*
+			 * Use suspend-to-idle by default if the default
+			 * suspend mode was not set from the command line.
+			 */
+			if (mem_sleep_default > PM_SUSPEND_MEM)
+				mem_sleep_current = PM_SUSPEND_TO_IDLE;
 		}
 
 		acpi_handle_debug(adev->handle, "_DSM function mask: 0x%x\n",
@@ -723,6 +890,9 @@ static int lps0_device_attach(struct acpi_device *adev,
 				  "_DSM function 0 evaluation failed\n");
 	}
 	ACPI_FREE(out_obj);
+
+	lpi_device_get_constraints();
+
 	return 0;
 }
 
@@ -731,14 +901,14 @@ static struct acpi_scan_handler lps0_handler = {
 	.attach = lps0_device_attach,
 };
 
-static int acpi_freeze_begin(void)
+static int acpi_s2idle_begin(void)
 {
 	acpi_scan_lock_acquire();
 	s2idle_in_progress = true;
 	return 0;
 }
 
-static int acpi_freeze_prepare(void)
+static int acpi_s2idle_prepare(void)
 {
 	if (lps0_device_handle) {
 		acpi_sleep_run_lps0_dsm(ACPI_LPS0_SCREEN_OFF);
@@ -758,8 +928,12 @@ static int acpi_freeze_prepare(void)
 	return 0;
 }
 
-static void acpi_freeze_wake(void)
+static void acpi_s2idle_wake(void)
 {
+
+	if (pm_debug_messages_on)
+		lpi_check_constraints();
+
 	/*
 	 * If IRQD_WAKEUP_ARMED is not set for the SCI at this point, it means
 	 * that the SCI has triggered while suspended, so cancel the wakeup in
@@ -772,7 +946,7 @@ static void acpi_freeze_wake(void)
 	}
 }
 
-static void acpi_freeze_sync(void)
+static void acpi_s2idle_sync(void)
 {
 	/*
 	 * Process all pending events in case there are any wakeup ones.
@@ -785,7 +959,7 @@ static void acpi_freeze_sync(void)
 	s2idle_wakeup = false;
 }
 
-static void acpi_freeze_restore(void)
+static void acpi_s2idle_restore(void)
 {
 	if (acpi_sci_irq_valid())
 		disable_irq_wake(acpi_sci_irq);
@@ -798,19 +972,19 @@ static void acpi_freeze_restore(void)
 	}
 }
 
-static void acpi_freeze_end(void)
+static void acpi_s2idle_end(void)
 {
 	s2idle_in_progress = false;
 	acpi_scan_lock_release();
 }
 
-static const struct platform_freeze_ops acpi_freeze_ops = {
-	.begin = acpi_freeze_begin,
-	.prepare = acpi_freeze_prepare,
-	.wake = acpi_freeze_wake,
-	.sync = acpi_freeze_sync,
-	.restore = acpi_freeze_restore,
-	.end = acpi_freeze_end,
+static const struct platform_s2idle_ops acpi_s2idle_ops = {
+	.begin = acpi_s2idle_begin,
+	.prepare = acpi_s2idle_prepare,
+	.wake = acpi_s2idle_wake,
+	.sync = acpi_s2idle_sync,
+	.restore = acpi_s2idle_restore,
+	.end = acpi_s2idle_end,
 };
 
 static void acpi_sleep_suspend_setup(void)
@@ -825,7 +999,7 @@ static void acpi_sleep_suspend_setup(void)
 		&acpi_suspend_ops_old : &acpi_suspend_ops);
 
 	acpi_scan_add_handler(&lps0_handler);
-	freeze_set_ops(&acpi_freeze_ops);
+	s2idle_set_ops(&acpi_s2idle_ops);
 }
 
 #else /* !CONFIG_SUSPEND */
diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c
index c99f8730de82..ea1732ed7a9d 100644
--- a/drivers/base/power/main.c
+++ b/drivers/base/power/main.c
@@ -418,8 +418,7 @@ static void pm_dev_err(struct device *dev, pm_message_t state, const char *info,
 		dev_name(dev), pm_verb(state.event), info, error);
 }
 
-#ifdef CONFIG_PM_DEBUG
-static void dpm_show_time(ktime_t starttime, pm_message_t state,
+static void dpm_show_time(ktime_t starttime, pm_message_t state, int error,
 			  const char *info)
 {
 	ktime_t calltime;
@@ -432,14 +431,12 @@ static void dpm_show_time(ktime_t starttime, pm_message_t state,
 	usecs = usecs64;
 	if (usecs == 0)
 		usecs = 1;
-	pr_info("PM: %s%s%s of devices complete after %ld.%03ld msecs\n",
-		info ?: "", info ? " " : "", pm_verb(state.event),
-		usecs / USEC_PER_MSEC, usecs % USEC_PER_MSEC);
+
+	pm_pr_dbg("%s%s%s of devices %s after %ld.%03ld msecs\n",
+		  info ?: "", info ? " " : "", pm_verb(state.event),
+		  error ? "aborted" : "complete",
+		  usecs / USEC_PER_MSEC, usecs % USEC_PER_MSEC);
 }
-#else
-static inline void dpm_show_time(ktime_t starttime, pm_message_t state,
-				 const char *info) {}
-#endif /* CONFIG_PM_DEBUG */
 
 static int dpm_run_callback(pm_callback_t cb, struct device *dev,
 			    pm_message_t state, const char *info)
@@ -602,14 +599,7 @@ static void async_resume_noirq(void *data, async_cookie_t cookie)
 	put_device(dev);
 }
 
-/**
- * dpm_resume_noirq - Execute "noirq resume" callbacks for all devices.
- * @state: PM transition of the system being carried out.
- *
- * Call the "noirq" resume handlers for all devices in dpm_noirq_list and
- * enable device drivers to receive interrupts.
- */
-void dpm_resume_noirq(pm_message_t state)
+void dpm_noirq_resume_devices(pm_message_t state)
 {
 	struct device *dev;
 	ktime_t starttime = ktime_get();
@@ -654,11 +644,28 @@ void dpm_resume_noirq(pm_message_t state)
 	}
 	mutex_unlock(&dpm_list_mtx);
 	async_synchronize_full();
-	dpm_show_time(starttime, state, "noirq");
+	dpm_show_time(starttime, state, 0, "noirq");
+	trace_suspend_resume(TPS("dpm_resume_noirq"), state.event, false);
+}
+
+void dpm_noirq_end(void)
+{
 	resume_device_irqs();
 	device_wakeup_disarm_wake_irqs();
 	cpuidle_resume();
-	trace_suspend_resume(TPS("dpm_resume_noirq"), state.event, false);
+}
+
+/**
+ * dpm_resume_noirq - Execute "noirq resume" callbacks for all devices.
+ * @state: PM transition of the system being carried out.
+ *
+ * Invoke the "noirq" resume callbacks for all devices in dpm_noirq_list and
+ * allow device drivers' interrupt handlers to be called.
+ */
+void dpm_resume_noirq(pm_message_t state)
+{
+	dpm_noirq_resume_devices(state);
+	dpm_noirq_end();
 }
 
 /**
@@ -776,7 +783,7 @@ void dpm_resume_early(pm_message_t state)
 	}
 	mutex_unlock(&dpm_list_mtx);
 	async_synchronize_full();
-	dpm_show_time(starttime, state, "early");
+	dpm_show_time(starttime, state, 0, "early");
 	trace_suspend_resume(TPS("dpm_resume_early"), state.event, false);
 }
 
@@ -948,7 +955,7 @@ void dpm_resume(pm_message_t state)
 	}
 	mutex_unlock(&dpm_list_mtx);
 	async_synchronize_full();
-	dpm_show_time(starttime, state, NULL);
+	dpm_show_time(starttime, state, 0, NULL);
 
 	cpufreq_resume();
 	trace_suspend_resume(TPS("dpm_resume"), state.event, false);
@@ -1098,6 +1105,11 @@ static int __device_suspend_noirq(struct device *dev, pm_message_t state, bool a
 	if (async_error)
 		goto Complete;
 
+	if (pm_wakeup_pending()) {
+		async_error = -EBUSY;
+		goto Complete;
+	}
+
 	if (dev->power.syscore || dev->power.direct_complete)
 		goto Complete;
 
@@ -1158,22 +1170,19 @@ static int device_suspend_noirq(struct device *dev)
 	return __device_suspend_noirq(dev, pm_transition, false);
 }
 
-/**
- * dpm_suspend_noirq - Execute "noirq suspend" callbacks for all devices.
- * @state: PM transition of the system being carried out.
- *
- * Prevent device drivers from receiving interrupts and call the "noirq" suspend
- * handlers for all non-sysdev devices.
- */
-int dpm_suspend_noirq(pm_message_t state)
+void dpm_noirq_begin(void)
+{
+	cpuidle_pause();
+	device_wakeup_arm_wake_irqs();
+	suspend_device_irqs();
+}
+
+int dpm_noirq_suspend_devices(pm_message_t state)
 {
 	ktime_t starttime = ktime_get();
 	int error = 0;
 
 	trace_suspend_resume(TPS("dpm_suspend_noirq"), state.event, true);
-	cpuidle_pause();
-	device_wakeup_arm_wake_irqs();
-	suspend_device_irqs();
 	mutex_lock(&dpm_list_mtx);
 	pm_transition = state;
 	async_error = 0;
@@ -1208,15 +1217,32 @@ int dpm_suspend_noirq(pm_message_t state)
 	if (error) {
 		suspend_stats.failed_suspend_noirq++;
 		dpm_save_failed_step(SUSPEND_SUSPEND_NOIRQ);
-		dpm_resume_noirq(resume_event(state));
-	} else {
-		dpm_show_time(starttime, state, "noirq");
 	}
+	dpm_show_time(starttime, state, error, "noirq");
 	trace_suspend_resume(TPS("dpm_suspend_noirq"), state.event, false);
 	return error;
 }
 
 /**
+ * dpm_suspend_noirq - Execute "noirq suspend" callbacks for all devices.
+ * @state: PM transition of the system being carried out.
+ *
+ * Prevent device drivers' interrupt handlers from being called and invoke
+ * "noirq" suspend callbacks for all non-sysdev devices.
+ */
+int dpm_suspend_noirq(pm_message_t state)
+{
+	int ret;
+
+	dpm_noirq_begin();
+	ret = dpm_noirq_suspend_devices(state);
+	if (ret)
+		dpm_resume_noirq(resume_event(state));
+
+	return ret;
+}
+
+/**
  * device_suspend_late - Execute a "late suspend" callback for given device.
  * @dev: Device to handle.
  * @state: PM transition of the system being carried out.
@@ -1350,9 +1376,8 @@ int dpm_suspend_late(pm_message_t state)
 		suspend_stats.failed_suspend_late++;
 		dpm_save_failed_step(SUSPEND_SUSPEND_LATE);
 		dpm_resume_early(resume_event(state));
-	} else {
-		dpm_show_time(starttime, state, "late");
 	}
+	dpm_show_time(starttime, state, error, "late");
 	trace_suspend_resume(TPS("dpm_suspend_late"), state.event, false);
 	return error;
 }
@@ -1618,8 +1643,8 @@ int dpm_suspend(pm_message_t state)
 	if (error) {
 		suspend_stats.failed_suspend++;
 		dpm_save_failed_step(SUSPEND_SUSPEND);
-	} else
-		dpm_show_time(starttime, state, NULL);
+	}
+	dpm_show_time(starttime, state, error, NULL);
 	trace_suspend_resume(TPS("dpm_suspend"), state.event, false);
 	return error;
 }
diff --git a/drivers/base/power/wakeup.c b/drivers/base/power/wakeup.c
index b49efe33099e..cdd6f256da59 100644
--- a/drivers/base/power/wakeup.c
+++ b/drivers/base/power/wakeup.c
@@ -865,7 +865,7 @@ bool pm_wakeup_pending(void)
 void pm_system_wakeup(void)
 {
 	atomic_inc(&pm_abort_suspend);
-	freeze_wake();
+	s2idle_wake();
 }
 EXPORT_SYMBOL_GPL(pm_system_wakeup);
 
diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c
index 60bb64f4329d..484cc8909d5c 100644
--- a/drivers/cpuidle/cpuidle.c
+++ b/drivers/cpuidle/cpuidle.c
@@ -77,7 +77,7 @@ static int find_deepest_state(struct cpuidle_driver *drv,
 			      struct cpuidle_device *dev,
 			      unsigned int max_latency,
 			      unsigned int forbidden_flags,
-			      bool freeze)
+			      bool s2idle)
 {
 	unsigned int latency_req = 0;
 	int i, ret = 0;
@@ -89,7 +89,7 @@ static int find_deepest_state(struct cpuidle_driver *drv,
 		if (s->disabled || su->disable || s->exit_latency <= latency_req
 		    || s->exit_latency > max_latency
 		    || (s->flags & forbidden_flags)
-		    || (freeze && !s->enter_freeze))
+		    || (s2idle && !s->enter_s2idle))
 			continue;
 
 		latency_req = s->exit_latency;
@@ -128,7 +128,7 @@ int cpuidle_find_deepest_state(struct cpuidle_driver *drv,
 }
 
 #ifdef CONFIG_SUSPEND
-static void enter_freeze_proper(struct cpuidle_driver *drv,
+static void enter_s2idle_proper(struct cpuidle_driver *drv,
 				struct cpuidle_device *dev, int index)
 {
 	/*
@@ -143,7 +143,7 @@ static void enter_freeze_proper(struct cpuidle_driver *drv,
 	 * suspended is generally unsafe.
 	 */
 	stop_critical_timings();
-	drv->states[index].enter_freeze(dev, drv, index);
+	drv->states[index].enter_s2idle(dev, drv, index);
 	WARN_ON(!irqs_disabled());
 	/*
 	 * timekeeping_resume() that will be called by tick_unfreeze() for the
@@ -155,25 +155,25 @@ static void enter_freeze_proper(struct cpuidle_driver *drv,
 }
 
 /**
- * cpuidle_enter_freeze - Enter an idle state suitable for suspend-to-idle.
+ * cpuidle_enter_s2idle - Enter an idle state suitable for suspend-to-idle.
  * @drv: cpuidle driver for the given CPU.
  * @dev: cpuidle device for the given CPU.
  *
- * If there are states with the ->enter_freeze callback, find the deepest of
+ * If there are states with the ->enter_s2idle callback, find the deepest of
  * them and enter it with frozen tick.
  */
-int cpuidle_enter_freeze(struct cpuidle_driver *drv, struct cpuidle_device *dev)
+int cpuidle_enter_s2idle(struct cpuidle_driver *drv, struct cpuidle_device *dev)
 {
 	int index;
 
 	/*
-	 * Find the deepest state with ->enter_freeze present, which guarantees
+	 * Find the deepest state with ->enter_s2idle present, which guarantees
 	 * that interrupts won't be enabled when it exits and allows the tick to
 	 * be frozen safely.
 	 */
 	index = find_deepest_state(drv, dev, UINT_MAX, 0, true);
 	if (index > 0)
-		enter_freeze_proper(drv, dev, index);
+		enter_s2idle_proper(drv, dev, index);
 
 	return index;
 }
diff --git a/drivers/cpuidle/dt_idle_states.c b/drivers/cpuidle/dt_idle_states.c
index bafd4dbf55d4..53342b7f1010 100644
--- a/drivers/cpuidle/dt_idle_states.c
+++ b/drivers/cpuidle/dt_idle_states.c
@@ -41,9 +41,9 @@ static int init_state_node(struct cpuidle_state *idle_state,
 	/*
 	 * Since this is not a "coupled" state, it's safe to assume interrupts
 	 * won't be enabled when it exits allowing the tick to be frozen
-	 * safely. So enter() can be also enter_freeze() callback.
+	 * safely. So enter() can be also enter_s2idle() callback.
 	 */
-	idle_state->enter_freeze = match_id->data;
+	idle_state->enter_s2idle = match_id->data;
 
 	err = of_property_read_u32(state_node, "wakeup-latency-us",
 				   &idle_state->exit_latency);
diff --git a/drivers/idle/intel_idle.c b/drivers/idle/intel_idle.c
index 7bf8739e33bc..f0b06b14e782 100644
--- a/drivers/idle/intel_idle.c
+++ b/drivers/idle/intel_idle.c
@@ -97,7 +97,7 @@ static const struct idle_cpu *icpu;
 static struct cpuidle_device __percpu *intel_idle_cpuidle_devices;
 static int intel_idle(struct cpuidle_device *dev,
 			struct cpuidle_driver *drv, int index);
-static void intel_idle_freeze(struct cpuidle_device *dev,
+static void intel_idle_s2idle(struct cpuidle_device *dev,
 			      struct cpuidle_driver *drv, int index);
 static struct cpuidle_state *cpuidle_state_table;
 
@@ -132,7 +132,7 @@ static struct cpuidle_state nehalem_cstates[] = {
 		.exit_latency = 3,
 		.target_residency = 6,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C1E",
 		.desc = "MWAIT 0x01",
@@ -140,7 +140,7 @@ static struct cpuidle_state nehalem_cstates[] = {
 		.exit_latency = 10,
 		.target_residency = 20,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C3",
 		.desc = "MWAIT 0x10",
@@ -148,7 +148,7 @@ static struct cpuidle_state nehalem_cstates[] = {
 		.exit_latency = 20,
 		.target_residency = 80,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C6",
 		.desc = "MWAIT 0x20",
@@ -156,7 +156,7 @@ static struct cpuidle_state nehalem_cstates[] = {
 		.exit_latency = 200,
 		.target_residency = 800,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.enter = NULL }
 };
@@ -169,7 +169,7 @@ static struct cpuidle_state snb_cstates[] = {
 		.exit_latency = 2,
 		.target_residency = 2,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C1E",
 		.desc = "MWAIT 0x01",
@@ -177,7 +177,7 @@ static struct cpuidle_state snb_cstates[] = {
 		.exit_latency = 10,
 		.target_residency = 20,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C3",
 		.desc = "MWAIT 0x10",
@@ -185,7 +185,7 @@ static struct cpuidle_state snb_cstates[] = {
 		.exit_latency = 80,
 		.target_residency = 211,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C6",
 		.desc = "MWAIT 0x20",
@@ -193,7 +193,7 @@ static struct cpuidle_state snb_cstates[] = {
 		.exit_latency = 104,
 		.target_residency = 345,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C7",
 		.desc = "MWAIT 0x30",
@@ -201,7 +201,7 @@ static struct cpuidle_state snb_cstates[] = {
 		.exit_latency = 109,
 		.target_residency = 345,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.enter = NULL }
 };
@@ -214,7 +214,7 @@ static struct cpuidle_state byt_cstates[] = {
 		.exit_latency = 1,
 		.target_residency = 1,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C6N",
 		.desc = "MWAIT 0x58",
@@ -222,7 +222,7 @@ static struct cpuidle_state byt_cstates[] = {
 		.exit_latency = 300,
 		.target_residency = 275,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C6S",
 		.desc = "MWAIT 0x52",
@@ -230,7 +230,7 @@ static struct cpuidle_state byt_cstates[] = {
 		.exit_latency = 500,
 		.target_residency = 560,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C7",
 		.desc = "MWAIT 0x60",
@@ -238,7 +238,7 @@ static struct cpuidle_state byt_cstates[] = {
 		.exit_latency = 1200,
 		.target_residency = 4000,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C7S",
 		.desc = "MWAIT 0x64",
@@ -246,7 +246,7 @@ static struct cpuidle_state byt_cstates[] = {
 		.exit_latency = 10000,
 		.target_residency = 20000,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.enter = NULL }
 };
@@ -259,7 +259,7 @@ static struct cpuidle_state cht_cstates[] = {
 		.exit_latency = 1,
 		.target_residency = 1,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C6N",
 		.desc = "MWAIT 0x58",
@@ -267,7 +267,7 @@ static struct cpuidle_state cht_cstates[] = {
 		.exit_latency = 80,
 		.target_residency = 275,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C6S",
 		.desc = "MWAIT 0x52",
@@ -275,7 +275,7 @@ static struct cpuidle_state cht_cstates[] = {
 		.exit_latency = 200,
 		.target_residency = 560,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C7",
 		.desc = "MWAIT 0x60",
@@ -283,7 +283,7 @@ static struct cpuidle_state cht_cstates[] = {
 		.exit_latency = 1200,
 		.target_residency = 4000,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C7S",
 		.desc = "MWAIT 0x64",
@@ -291,7 +291,7 @@ static struct cpuidle_state cht_cstates[] = {
 		.exit_latency = 10000,
 		.target_residency = 20000,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.enter = NULL }
 };
@@ -304,7 +304,7 @@ static struct cpuidle_state ivb_cstates[] = {
 		.exit_latency = 1,
 		.target_residency = 1,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C1E",
 		.desc = "MWAIT 0x01",
@@ -312,7 +312,7 @@ static struct cpuidle_state ivb_cstates[] = {
 		.exit_latency = 10,
 		.target_residency = 20,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C3",
 		.desc = "MWAIT 0x10",
@@ -320,7 +320,7 @@ static struct cpuidle_state ivb_cstates[] = {
 		.exit_latency = 59,
 		.target_residency = 156,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C6",
 		.desc = "MWAIT 0x20",
@@ -328,7 +328,7 @@ static struct cpuidle_state ivb_cstates[] = {
 		.exit_latency = 80,
 		.target_residency = 300,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C7",
 		.desc = "MWAIT 0x30",
@@ -336,7 +336,7 @@ static struct cpuidle_state ivb_cstates[] = {
 		.exit_latency = 87,
 		.target_residency = 300,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.enter = NULL }
 };
@@ -349,7 +349,7 @@ static struct cpuidle_state ivt_cstates[] = {
 		.exit_latency = 1,
 		.target_residency = 1,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C1E",
 		.desc = "MWAIT 0x01",
@@ -357,7 +357,7 @@ static struct cpuidle_state ivt_cstates[] = {
 		.exit_latency = 10,
 		.target_residency = 80,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C3",
 		.desc = "MWAIT 0x10",
@@ -365,7 +365,7 @@ static struct cpuidle_state ivt_cstates[] = {
 		.exit_latency = 59,
 		.target_residency = 156,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C6",
 		.desc = "MWAIT 0x20",
@@ -373,7 +373,7 @@ static struct cpuidle_state ivt_cstates[] = {
 		.exit_latency = 82,
 		.target_residency = 300,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.enter = NULL }
 };
@@ -386,7 +386,7 @@ static struct cpuidle_state ivt_cstates_4s[] = {
 		.exit_latency = 1,
 		.target_residency = 1,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C1E",
 		.desc = "MWAIT 0x01",
@@ -394,7 +394,7 @@ static struct cpuidle_state ivt_cstates_4s[] = {
 		.exit_latency = 10,
 		.target_residency = 250,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C3",
 		.desc = "MWAIT 0x10",
@@ -402,7 +402,7 @@ static struct cpuidle_state ivt_cstates_4s[] = {
 		.exit_latency = 59,
 		.target_residency = 300,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C6",
 		.desc = "MWAIT 0x20",
@@ -410,7 +410,7 @@ static struct cpuidle_state ivt_cstates_4s[] = {
 		.exit_latency = 84,
 		.target_residency = 400,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.enter = NULL }
 };
@@ -423,7 +423,7 @@ static struct cpuidle_state ivt_cstates_8s[] = {
 		.exit_latency = 1,
 		.target_residency = 1,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C1E",
 		.desc = "MWAIT 0x01",
@@ -431,7 +431,7 @@ static struct cpuidle_state ivt_cstates_8s[] = {
 		.exit_latency = 10,
 		.target_residency = 500,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C3",
 		.desc = "MWAIT 0x10",
@@ -439,7 +439,7 @@ static struct cpuidle_state ivt_cstates_8s[] = {
 		.exit_latency = 59,
 		.target_residency = 600,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C6",
 		.desc = "MWAIT 0x20",
@@ -447,7 +447,7 @@ static struct cpuidle_state ivt_cstates_8s[] = {
 		.exit_latency = 88,
 		.target_residency = 700,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.enter = NULL }
 };
@@ -460,7 +460,7 @@ static struct cpuidle_state hsw_cstates[] = {
 		.exit_latency = 2,
 		.target_residency = 2,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C1E",
 		.desc = "MWAIT 0x01",
@@ -468,7 +468,7 @@ static struct cpuidle_state hsw_cstates[] = {
 		.exit_latency = 10,
 		.target_residency = 20,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C3",
 		.desc = "MWAIT 0x10",
@@ -476,7 +476,7 @@ static struct cpuidle_state hsw_cstates[] = {
 		.exit_latency = 33,
 		.target_residency = 100,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C6",
 		.desc = "MWAIT 0x20",
@@ -484,7 +484,7 @@ static struct cpuidle_state hsw_cstates[] = {
 		.exit_latency = 133,
 		.target_residency = 400,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C7s",
 		.desc = "MWAIT 0x32",
@@ -492,7 +492,7 @@ static struct cpuidle_state hsw_cstates[] = {
 		.exit_latency = 166,
 		.target_residency = 500,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C8",
 		.desc = "MWAIT 0x40",
@@ -500,7 +500,7 @@ static struct cpuidle_state hsw_cstates[] = {
 		.exit_latency = 300,
 		.target_residency = 900,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C9",
 		.desc = "MWAIT 0x50",
@@ -508,7 +508,7 @@ static struct cpuidle_state hsw_cstates[] = {
 		.exit_latency = 600,
 		.target_residency = 1800,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C10",
 		.desc = "MWAIT 0x60",
@@ -516,7 +516,7 @@ static struct cpuidle_state hsw_cstates[] = {
 		.exit_latency = 2600,
 		.target_residency = 7700,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.enter = NULL }
 };
@@ -528,7 +528,7 @@ static struct cpuidle_state bdw_cstates[] = {
 		.exit_latency = 2,
 		.target_residency = 2,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C1E",
 		.desc = "MWAIT 0x01",
@@ -536,7 +536,7 @@ static struct cpuidle_state bdw_cstates[] = {
 		.exit_latency = 10,
 		.target_residency = 20,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C3",
 		.desc = "MWAIT 0x10",
@@ -544,7 +544,7 @@ static struct cpuidle_state bdw_cstates[] = {
 		.exit_latency = 40,
 		.target_residency = 100,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C6",
 		.desc = "MWAIT 0x20",
@@ -552,7 +552,7 @@ static struct cpuidle_state bdw_cstates[] = {
 		.exit_latency = 133,
 		.target_residency = 400,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C7s",
 		.desc = "MWAIT 0x32",
@@ -560,7 +560,7 @@ static struct cpuidle_state bdw_cstates[] = {
 		.exit_latency = 166,
 		.target_residency = 500,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C8",
 		.desc = "MWAIT 0x40",
@@ -568,7 +568,7 @@ static struct cpuidle_state bdw_cstates[] = {
 		.exit_latency = 300,
 		.target_residency = 900,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C9",
 		.desc = "MWAIT 0x50",
@@ -576,7 +576,7 @@ static struct cpuidle_state bdw_cstates[] = {
 		.exit_latency = 600,
 		.target_residency = 1800,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C10",
 		.desc = "MWAIT 0x60",
@@ -584,7 +584,7 @@ static struct cpuidle_state bdw_cstates[] = {
 		.exit_latency = 2600,
 		.target_residency = 7700,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.enter = NULL }
 };
@@ -597,7 +597,7 @@ static struct cpuidle_state skl_cstates[] = {
 		.exit_latency = 2,
 		.target_residency = 2,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C1E",
 		.desc = "MWAIT 0x01",
@@ -605,7 +605,7 @@ static struct cpuidle_state skl_cstates[] = {
 		.exit_latency = 10,
 		.target_residency = 20,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C3",
 		.desc = "MWAIT 0x10",
@@ -613,7 +613,7 @@ static struct cpuidle_state skl_cstates[] = {
 		.exit_latency = 70,
 		.target_residency = 100,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C6",
 		.desc = "MWAIT 0x20",
@@ -621,7 +621,7 @@ static struct cpuidle_state skl_cstates[] = {
 		.exit_latency = 85,
 		.target_residency = 200,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C7s",
 		.desc = "MWAIT 0x33",
@@ -629,7 +629,7 @@ static struct cpuidle_state skl_cstates[] = {
 		.exit_latency = 124,
 		.target_residency = 800,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C8",
 		.desc = "MWAIT 0x40",
@@ -637,7 +637,7 @@ static struct cpuidle_state skl_cstates[] = {
 		.exit_latency = 200,
 		.target_residency = 800,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C9",
 		.desc = "MWAIT 0x50",
@@ -645,7 +645,7 @@ static struct cpuidle_state skl_cstates[] = {
 		.exit_latency = 480,
 		.target_residency = 5000,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C10",
 		.desc = "MWAIT 0x60",
@@ -653,7 +653,7 @@ static struct cpuidle_state skl_cstates[] = {
 		.exit_latency = 890,
 		.target_residency = 5000,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.enter = NULL }
 };
@@ -666,7 +666,7 @@ static struct cpuidle_state skx_cstates[] = {
 		.exit_latency = 2,
 		.target_residency = 2,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C1E",
 		.desc = "MWAIT 0x01",
@@ -674,7 +674,7 @@ static struct cpuidle_state skx_cstates[] = {
 		.exit_latency = 10,
 		.target_residency = 20,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C6",
 		.desc = "MWAIT 0x20",
@@ -682,7 +682,7 @@ static struct cpuidle_state skx_cstates[] = {
 		.exit_latency = 133,
 		.target_residency = 600,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.enter = NULL }
 };
@@ -695,7 +695,7 @@ static struct cpuidle_state atom_cstates[] = {
 		.exit_latency = 10,
 		.target_residency = 20,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C2",
 		.desc = "MWAIT 0x10",
@@ -703,7 +703,7 @@ static struct cpuidle_state atom_cstates[] = {
 		.exit_latency = 20,
 		.target_residency = 80,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C4",
 		.desc = "MWAIT 0x30",
@@ -711,7 +711,7 @@ static struct cpuidle_state atom_cstates[] = {
 		.exit_latency = 100,
 		.target_residency = 400,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C6",
 		.desc = "MWAIT 0x52",
@@ -719,7 +719,7 @@ static struct cpuidle_state atom_cstates[] = {
 		.exit_latency = 140,
 		.target_residency = 560,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.enter = NULL }
 };
@@ -731,7 +731,7 @@ static struct cpuidle_state tangier_cstates[] = {
 		.exit_latency = 1,
 		.target_residency = 4,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C4",
 		.desc = "MWAIT 0x30",
@@ -739,7 +739,7 @@ static struct cpuidle_state tangier_cstates[] = {
 		.exit_latency = 100,
 		.target_residency = 400,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C6",
 		.desc = "MWAIT 0x52",
@@ -747,7 +747,7 @@ static struct cpuidle_state tangier_cstates[] = {
 		.exit_latency = 140,
 		.target_residency = 560,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C7",
 		.desc = "MWAIT 0x60",
@@ -755,7 +755,7 @@ static struct cpuidle_state tangier_cstates[] = {
 		.exit_latency = 1200,
 		.target_residency = 4000,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C9",
 		.desc = "MWAIT 0x64",
@@ -763,7 +763,7 @@ static struct cpuidle_state tangier_cstates[] = {
 		.exit_latency = 10000,
 		.target_residency = 20000,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.enter = NULL }
 };
@@ -775,7 +775,7 @@ static struct cpuidle_state avn_cstates[] = {
 		.exit_latency = 2,
 		.target_residency = 2,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C6",
 		.desc = "MWAIT 0x51",
@@ -783,7 +783,7 @@ static struct cpuidle_state avn_cstates[] = {
 		.exit_latency = 15,
 		.target_residency = 45,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.enter = NULL }
 };
@@ -795,7 +795,7 @@ static struct cpuidle_state knl_cstates[] = {
 		.exit_latency = 1,
 		.target_residency = 2,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze },
+		.enter_s2idle = intel_idle_s2idle },
 	{
 		.name = "C6",
 		.desc = "MWAIT 0x10",
@@ -803,7 +803,7 @@ static struct cpuidle_state knl_cstates[] = {
 		.exit_latency = 120,
 		.target_residency = 500,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze },
+		.enter_s2idle = intel_idle_s2idle },
 	{
 		.enter = NULL }
 };
@@ -816,7 +816,7 @@ static struct cpuidle_state bxt_cstates[] = {
 		.exit_latency = 2,
 		.target_residency = 2,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C1E",
 		.desc = "MWAIT 0x01",
@@ -824,7 +824,7 @@ static struct cpuidle_state bxt_cstates[] = {
 		.exit_latency = 10,
 		.target_residency = 20,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C6",
 		.desc = "MWAIT 0x20",
@@ -832,7 +832,7 @@ static struct cpuidle_state bxt_cstates[] = {
 		.exit_latency = 133,
 		.target_residency = 133,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C7s",
 		.desc = "MWAIT 0x31",
@@ -840,7 +840,7 @@ static struct cpuidle_state bxt_cstates[] = {
 		.exit_latency = 155,
 		.target_residency = 155,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C8",
 		.desc = "MWAIT 0x40",
@@ -848,7 +848,7 @@ static struct cpuidle_state bxt_cstates[] = {
 		.exit_latency = 1000,
 		.target_residency = 1000,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C9",
 		.desc = "MWAIT 0x50",
@@ -856,7 +856,7 @@ static struct cpuidle_state bxt_cstates[] = {
 		.exit_latency = 2000,
 		.target_residency = 2000,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C10",
 		.desc = "MWAIT 0x60",
@@ -864,7 +864,7 @@ static struct cpuidle_state bxt_cstates[] = {
 		.exit_latency = 10000,
 		.target_residency = 10000,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.enter = NULL }
 };
@@ -877,7 +877,7 @@ static struct cpuidle_state dnv_cstates[] = {
 		.exit_latency = 2,
 		.target_residency = 2,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C1E",
 		.desc = "MWAIT 0x01",
@@ -885,7 +885,7 @@ static struct cpuidle_state dnv_cstates[] = {
 		.exit_latency = 10,
 		.target_residency = 20,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.name = "C6",
 		.desc = "MWAIT 0x20",
@@ -893,7 +893,7 @@ static struct cpuidle_state dnv_cstates[] = {
 		.exit_latency = 50,
 		.target_residency = 500,
 		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
+		.enter_s2idle = intel_idle_s2idle, },
 	{
 		.enter = NULL }
 };
@@ -936,12 +936,12 @@ static __cpuidle int intel_idle(struct cpuidle_device *dev,
 }
 
 /**
- * intel_idle_freeze - simplified "enter" callback routine for suspend-to-idle
+ * intel_idle_s2idle - simplified "enter" callback routine for suspend-to-idle
  * @dev: cpuidle_device
  * @drv: cpuidle driver
  * @index: state index
  */
-static void intel_idle_freeze(struct cpuidle_device *dev,
+static void intel_idle_s2idle(struct cpuidle_device *dev,
 			     struct cpuidle_driver *drv, int index)
 {
 	unsigned long ecx = 1; /* break on interrupt flag */
@@ -1338,7 +1338,7 @@ static void __init intel_idle_cpuidle_driver_init(void)
 		int num_substates, mwait_hint, mwait_cstate;
 
 		if ((cpuidle_state_table[cstate].enter == NULL) &&
-		    (cpuidle_state_table[cstate].enter_freeze == NULL))
+		    (cpuidle_state_table[cstate].enter_s2idle == NULL))
 			break;
 
 		if (cstate + 1 > max_cstate) {
diff --git a/drivers/platform/x86/intel-hid.c b/drivers/platform/x86/intel-hid.c
index 8519e0f97bdd..a782c78e7c63 100644
--- a/drivers/platform/x86/intel-hid.c
+++ b/drivers/platform/x86/intel-hid.c
@@ -203,15 +203,26 @@ static void notify_handler(acpi_handle handle, u32 event, void *context)
 	acpi_status status;
 
 	if (priv->wakeup_mode) {
+		/*
+		 * Needed for wakeup from suspend-to-idle to work on some
+		 * platforms that don't expose the 5-button array, but still
+		 * send notifies with the power button event code to this
+		 * device object on power button actions while suspended.
+		 */
+		if (event == 0xce)
+			goto wakeup;
+
 		/* Wake up on 5-button array events only. */
 		if (event == 0xc0 || !priv->array)
 			return;
 
-		if (sparse_keymap_entry_from_scancode(priv->array, event))
-			pm_wakeup_hard_event(&device->dev);
-		else
+		if (!sparse_keymap_entry_from_scancode(priv->array, event)) {
 			dev_info(&device->dev, "unknown event 0x%x\n", event);
+			return;
+		}
 
+wakeup:
+		pm_wakeup_hard_event(&device->dev);
 		return;
 	}
 
diff --git a/drivers/regulator/of_regulator.c b/drivers/regulator/of_regulator.c
index 96bf75458da5..860480ecf2be 100644
--- a/drivers/regulator/of_regulator.c
+++ b/drivers/regulator/of_regulator.c
@@ -150,7 +150,7 @@ static void of_get_regulation_constraints(struct device_node *np,
 			suspend_state = &constraints->state_disk;
 			break;
 		case PM_SUSPEND_ON:
-		case PM_SUSPEND_FREEZE:
+		case PM_SUSPEND_TO_IDLE:
 		case PM_SUSPEND_STANDBY:
 		default:
 			continue;