Merge branch 'pm-pci'

Merge PCI device power management updates for 5.16-rc1:

 - Make the association of ACPI device objects with PCI devices more
   straightforward and simplify the code doing that for all devices
   in general (Rafael Wysocki).

 - Eliminate struct pci_platform_pm_ops and handle the both of its
   users (PCI and Intel MID) directly in the PCI bus code (Rafael
   Wysocki).

 - Simplify and clarify ACPI PCI device PM helpers (Rafael Wysocki).

 - Fix ordering of operations in pci_back_from_sleep() (Rafael
   Wysocki).

* pm-pci:
  PCI: PM: Fix ordering of operations in pci_back_from_sleep()
  PCI: PM: Do not call platform_pci_power_manageable() unnecessarily
  PCI: PM: Make pci_choose_state() call pci_target_state()
  PCI: PM: Rearrange pci_target_state()
  PCI: PM: Simplify acpi_pci_power_manageable()
  PCI: PM: Drop struct pci_platform_pm_ops
  PCI: ACPI: PM: Do not use pci_platform_pm_ops for ACPI
  PCI: PM: Do not use pci_platform_pm_ops for Intel MID PM
  ACPI: glue: Look for ACPI bus type only if ACPI companion is not known
  ACPI: glue: Drop cleanup callback from struct acpi_bus_type
  PCI: ACPI: Drop acpi_pci_bus

5 files changed, 173 insertions, 222 deletions

diff --git a/drivers/acpi/glue.c b/drivers/acpi/glue.c
index 7a33a6d985f8..17ec6e57c4b7 100644
--- a/drivers/acpi/glue.c
+++ b/drivers/acpi/glue.c
@@ -17,6 +17,8 @@
 #include <linux/rwsem.h>
 #include <linux/acpi.h>
 #include <linux/dma-mapping.h>
+#include <linux/pci.h>
+#include <linux/pci-acpi.h>
 #include <linux/platform_device.h>
 
 #include "internal.h"
@@ -287,12 +289,13 @@ EXPORT_SYMBOL_GPL(acpi_unbind_one);
 
 void acpi_device_notify(struct device *dev)
 {
-	struct acpi_bus_type *type = acpi_get_bus_type(dev);
 	struct acpi_device *adev;
 	int ret;
 
 	ret = acpi_bind_one(dev, NULL);
 	if (ret) {
+		struct acpi_bus_type *type = acpi_get_bus_type(dev);
+
 		if (!type)
 			goto err;
 
@@ -304,17 +307,26 @@ void acpi_device_notify(struct device *dev)
 		ret = acpi_bind_one(dev, adev);
 		if (ret)
 			goto err;
-	}
-	adev = ACPI_COMPANION(dev);
 
-	if (dev_is_platform(dev))
-		acpi_configure_pmsi_domain(dev);
+		if (type->setup) {
+			type->setup(dev);
+			goto done;
+		}
+	} else {
+		adev = ACPI_COMPANION(dev);
+
+		if (dev_is_pci(dev)) {
+			pci_acpi_setup(dev, adev);
+			goto done;
+		} else if (dev_is_platform(dev)) {
+			acpi_configure_pmsi_domain(dev);
+		}
+	}
 
-	if (type && type->setup)
-		type->setup(dev);
-	else if (adev->handler && adev->handler->bind)
+	if (adev->handler && adev->handler->bind)
 		adev->handler->bind(dev);
 
+done:
 	acpi_handle_debug(ACPI_HANDLE(dev), "Bound to device %s\n",
 			  dev_name(dev));
 
@@ -327,14 +339,12 @@ err:
 void acpi_device_notify_remove(struct device *dev)
 {
 	struct acpi_device *adev = ACPI_COMPANION(dev);
-	struct acpi_bus_type *type;
 
 	if (!adev)
 		return;
 
-	type = acpi_get_bus_type(dev);
-	if (type && type->cleanup)
-		type->cleanup(dev);
+	if (dev_is_pci(dev))
+		pci_acpi_cleanup(dev, adev);
 	else if (adev->handler && adev->handler->unbind)
 		adev->handler->unbind(dev);
 
diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c
index 260a06fb78a6..a42dbf448860 100644
--- a/drivers/pci/pci-acpi.c
+++ b/drivers/pci/pci-acpi.c
@@ -906,7 +906,7 @@ acpi_status pci_acpi_add_pm_notifier(struct acpi_device *dev,
  *	choose highest power _SxD or any lower power
  */
 
-static pci_power_t acpi_pci_choose_state(struct pci_dev *pdev)
+pci_power_t acpi_pci_choose_state(struct pci_dev *pdev)
 {
 	int acpi_state, d_max;
 
@@ -965,22 +965,20 @@ int pci_dev_acpi_reset(struct pci_dev *dev, bool probe)
 	return 0;
 }
 
-static bool acpi_pci_power_manageable(struct pci_dev *dev)
+bool acpi_pci_power_manageable(struct pci_dev *dev)
 {
 	struct acpi_device *adev = ACPI_COMPANION(&dev->dev);
 
-	if (!adev)
-		return false;
-	return acpi_device_power_manageable(adev);
+	return adev && acpi_device_power_manageable(adev);
 }
 
-static bool acpi_pci_bridge_d3(struct pci_dev *dev)
+bool acpi_pci_bridge_d3(struct pci_dev *dev)
 {
 	const union acpi_object *obj;
 	struct acpi_device *adev;
 	struct pci_dev *rpdev;
 
-	if (!dev->is_hotplug_bridge)
+	if (acpi_pci_disabled || !dev->is_hotplug_bridge)
 		return false;
 
 	/* Assume D3 support if the bridge is power-manageable by ACPI. */
@@ -1008,7 +1006,7 @@ static bool acpi_pci_bridge_d3(struct pci_dev *dev)
 	return obj->integer.value == 1;
 }
 
-static int acpi_pci_set_power_state(struct pci_dev *dev, pci_power_t state)
+int acpi_pci_set_power_state(struct pci_dev *dev, pci_power_t state)
 {
 	struct acpi_device *adev = ACPI_COMPANION(&dev->dev);
 	static const u8 state_conv[] = {
@@ -1046,7 +1044,7 @@ static int acpi_pci_set_power_state(struct pci_dev *dev, pci_power_t state)
 	return error;
 }
 
-static pci_power_t acpi_pci_get_power_state(struct pci_dev *dev)
+pci_power_t acpi_pci_get_power_state(struct pci_dev *dev)
 {
 	struct acpi_device *adev = ACPI_COMPANION(&dev->dev);
 	static const pci_power_t state_conv[] = {
@@ -1068,7 +1066,7 @@ static pci_power_t acpi_pci_get_power_state(struct pci_dev *dev)
 	return state_conv[state];
 }
 
-static void acpi_pci_refresh_power_state(struct pci_dev *dev)
+void acpi_pci_refresh_power_state(struct pci_dev *dev)
 {
 	struct acpi_device *adev = ACPI_COMPANION(&dev->dev);
 
@@ -1093,17 +1091,23 @@ static int acpi_pci_propagate_wakeup(struct pci_bus *bus, bool enable)
 	return 0;
 }
 
-static int acpi_pci_wakeup(struct pci_dev *dev, bool enable)
+int acpi_pci_wakeup(struct pci_dev *dev, bool enable)
 {
+	if (acpi_pci_disabled)
+		return 0;
+
 	if (acpi_pm_device_can_wakeup(&dev->dev))
 		return acpi_pm_set_device_wakeup(&dev->dev, enable);
 
 	return acpi_pci_propagate_wakeup(dev->bus, enable);
 }
 
-static bool acpi_pci_need_resume(struct pci_dev *dev)
+bool acpi_pci_need_resume(struct pci_dev *dev)
 {
-	struct acpi_device *adev = ACPI_COMPANION(&dev->dev);
+	struct acpi_device *adev;
+
+	if (acpi_pci_disabled)
+		return false;
 
 	/*
 	 * In some cases (eg. Samsung 305V4A) leaving a bridge in suspend over
@@ -1115,6 +1119,7 @@ static bool acpi_pci_need_resume(struct pci_dev *dev)
 	if (pci_is_bridge(dev) && acpi_target_system_state() != ACPI_STATE_S0)
 		return true;
 
+	adev = ACPI_COMPANION(&dev->dev);
 	if (!adev || !acpi_device_power_manageable(adev))
 		return false;
 
@@ -1128,17 +1133,6 @@ static bool acpi_pci_need_resume(struct pci_dev *dev)
 	return !!adev->power.flags.dsw_present;
 }
 
-static const struct pci_platform_pm_ops acpi_pci_platform_pm = {
-	.bridge_d3 = acpi_pci_bridge_d3,
-	.is_manageable = acpi_pci_power_manageable,
-	.set_state = acpi_pci_set_power_state,
-	.get_state = acpi_pci_get_power_state,
-	.refresh_state = acpi_pci_refresh_power_state,
-	.choose_state = acpi_pci_choose_state,
-	.set_wakeup = acpi_pci_wakeup,
-	.need_resume = acpi_pci_need_resume,
-};
-
 void acpi_pci_add_bus(struct pci_bus *bus)
 {
 	union acpi_object *obj;
@@ -1356,13 +1350,9 @@ static void pci_acpi_set_external_facing(struct pci_dev *dev)
 		dev->external_facing = 1;
 }
 
-static void pci_acpi_setup(struct device *dev)
+void pci_acpi_setup(struct device *dev, struct acpi_device *adev)
 {
 	struct pci_dev *pci_dev = to_pci_dev(dev);
-	struct acpi_device *adev = ACPI_COMPANION(dev);
-
-	if (!adev)
-		return;
 
 	pci_acpi_optimize_delay(pci_dev, adev->handle);
 	pci_acpi_set_external_facing(pci_dev);
@@ -1386,14 +1376,10 @@ static void pci_acpi_setup(struct device *dev)
 	acpi_device_power_add_dependent(adev, dev);
 }
 
-static void pci_acpi_cleanup(struct device *dev)
+void pci_acpi_cleanup(struct device *dev, struct acpi_device *adev)
 {
-	struct acpi_device *adev = ACPI_COMPANION(dev);
 	struct pci_dev *pci_dev = to_pci_dev(dev);
 
-	if (!adev)
-		return;
-
 	pci_acpi_remove_edr_notifier(pci_dev);
 	pci_acpi_remove_pm_notifier(adev);
 	if (adev->wakeup.flags.valid) {
@@ -1405,20 +1391,6 @@ static void pci_acpi_cleanup(struct device *dev)
 	}
 }
 
-static bool pci_acpi_bus_match(struct device *dev)
-{
-	return dev_is_pci(dev);
-}
-
-static struct acpi_bus_type acpi_pci_bus = {
-	.name = "PCI",
-	.match = pci_acpi_bus_match,
-	.find_companion = acpi_pci_find_companion,
-	.setup = pci_acpi_setup,
-	.cleanup = pci_acpi_cleanup,
-};
-
-
 static struct fwnode_handle *(*pci_msi_get_fwnode_cb)(struct device *dev);
 
 /**
@@ -1460,8 +1432,6 @@ struct irq_domain *pci_host_bridge_acpi_msi_domain(struct pci_bus *bus)
 
 static int __init acpi_pci_init(void)
 {
-	int ret;
-
 	if (acpi_gbl_FADT.boot_flags & ACPI_FADT_NO_MSI) {
 		pr_info("ACPI FADT declares the system doesn't support MSI, so disable it\n");
 		pci_no_msi();
@@ -1472,11 +1442,9 @@ static int __init acpi_pci_init(void)
 		pcie_no_aspm();
 	}
 
-	ret = register_acpi_bus_type(&acpi_pci_bus);
-	if (ret)
+	if (acpi_pci_disabled)
 		return 0;
 
-	pci_set_platform_pm(&acpi_pci_platform_pm);
 	acpi_pci_slot_init();
 	acpiphp_init();
 
diff --git a/drivers/pci/pci-mid.c b/drivers/pci/pci-mid.c
index aafd58da3a89..fbfd78127123 100644
--- a/drivers/pci/pci-mid.c
+++ b/drivers/pci/pci-mid.c
@@ -16,45 +16,23 @@
 
 #include "pci.h"
 
-static bool mid_pci_power_manageable(struct pci_dev *dev)
+static bool pci_mid_pm_enabled __read_mostly;
+
+bool pci_use_mid_pm(void)
 {
-	return true;
+	return pci_mid_pm_enabled;
 }
 
-static int mid_pci_set_power_state(struct pci_dev *pdev, pci_power_t state)
+int mid_pci_set_power_state(struct pci_dev *pdev, pci_power_t state)
 {
 	return intel_mid_pci_set_power_state(pdev, state);
 }
 
-static pci_power_t mid_pci_get_power_state(struct pci_dev *pdev)
+pci_power_t mid_pci_get_power_state(struct pci_dev *pdev)
 {
 	return intel_mid_pci_get_power_state(pdev);
 }
 
-static pci_power_t mid_pci_choose_state(struct pci_dev *pdev)
-{
-	return PCI_D3hot;
-}
-
-static int mid_pci_wakeup(struct pci_dev *dev, bool enable)
-{
-	return 0;
-}
-
-static bool mid_pci_need_resume(struct pci_dev *dev)
-{
-	return false;
-}
-
-static const struct pci_platform_pm_ops mid_pci_platform_pm = {
-	.is_manageable	= mid_pci_power_manageable,
-	.set_state	= mid_pci_set_power_state,
-	.get_state	= mid_pci_get_power_state,
-	.choose_state	= mid_pci_choose_state,
-	.set_wakeup	= mid_pci_wakeup,
-	.need_resume	= mid_pci_need_resume,
-};
-
 /*
  * This table should be in sync with the one in
  * arch/x86/platform/intel-mid/pwr.c.
@@ -71,7 +49,8 @@ static int __init mid_pci_init(void)
 
 	id = x86_match_cpu(lpss_cpu_ids);
 	if (id)
-		pci_set_platform_pm(&mid_pci_platform_pm);
+		pci_mid_pm_enabled = true;
+
 	return 0;
 }
 arch_initcall(mid_pci_init);
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index ce2ab62b64cf..11c88ffb51d9 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -972,61 +972,67 @@ static void pci_restore_bars(struct pci_dev *dev)
 		pci_update_resource(dev, i);
 }
 
-static const struct pci_platform_pm_ops *pci_platform_pm;
-
-int pci_set_platform_pm(const struct pci_platform_pm_ops *ops)
-{
-	if (!ops->is_manageable || !ops->set_state  || !ops->get_state ||
-	    !ops->choose_state  || !ops->set_wakeup || !ops->need_resume)
-		return -EINVAL;
-	pci_platform_pm = ops;
-	return 0;
-}
-
 static inline bool platform_pci_power_manageable(struct pci_dev *dev)
 {
-	return pci_platform_pm ? pci_platform_pm->is_manageable(dev) : false;
+	if (pci_use_mid_pm())
+		return true;
+
+	return acpi_pci_power_manageable(dev);
 }
 
 static inline int platform_pci_set_power_state(struct pci_dev *dev,
 					       pci_power_t t)
 {
-	return pci_platform_pm ? pci_platform_pm->set_state(dev, t) : -ENOSYS;
+	if (pci_use_mid_pm())
+		return mid_pci_set_power_state(dev, t);
+
+	return acpi_pci_set_power_state(dev, t);
 }
 
 static inline pci_power_t platform_pci_get_power_state(struct pci_dev *dev)
 {
-	return pci_platform_pm ? pci_platform_pm->get_state(dev) : PCI_UNKNOWN;
+	if (pci_use_mid_pm())
+		return mid_pci_get_power_state(dev);
+
+	return acpi_pci_get_power_state(dev);
 }
 
 static inline void platform_pci_refresh_power_state(struct pci_dev *dev)
 {
-	if (pci_platform_pm && pci_platform_pm->refresh_state)
-		pci_platform_pm->refresh_state(dev);
+	if (!pci_use_mid_pm())
+		acpi_pci_refresh_power_state(dev);
 }
 
 static inline pci_power_t platform_pci_choose_state(struct pci_dev *dev)
 {
-	return pci_platform_pm ?
-			pci_platform_pm->choose_state(dev) : PCI_POWER_ERROR;
+	if (pci_use_mid_pm())
+		return PCI_POWER_ERROR;
+
+	return acpi_pci_choose_state(dev);
 }
 
 static inline int platform_pci_set_wakeup(struct pci_dev *dev, bool enable)
 {
-	return pci_platform_pm ?
-			pci_platform_pm->set_wakeup(dev, enable) : -ENODEV;
+	if (pci_use_mid_pm())
+		return PCI_POWER_ERROR;
+
+	return acpi_pci_wakeup(dev, enable);
 }
 
 static inline bool platform_pci_need_resume(struct pci_dev *dev)
 {
-	return pci_platform_pm ? pci_platform_pm->need_resume(dev) : false;
+	if (pci_use_mid_pm())
+		return false;
+
+	return acpi_pci_need_resume(dev);
 }
 
 static inline bool platform_pci_bridge_d3(struct pci_dev *dev)
 {
-	if (pci_platform_pm && pci_platform_pm->bridge_d3)
-		return pci_platform_pm->bridge_d3(dev);
-	return false;
+	if (pci_use_mid_pm())
+		return false;
+
+	return acpi_pci_bridge_d3(dev);
 }
 
 /**
@@ -1185,9 +1191,7 @@ void pci_update_current_state(struct pci_dev *dev, pci_power_t state)
  */
 void pci_refresh_power_state(struct pci_dev *dev)
 {
-	if (platform_pci_power_manageable(dev))
-		platform_pci_refresh_power_state(dev);
-
+	platform_pci_refresh_power_state(dev);
 	pci_update_current_state(dev, dev->current_state);
 }
 
@@ -1200,14 +1204,10 @@ int pci_platform_power_transition(struct pci_dev *dev, pci_power_t state)
 {
 	int error;
 
-	if (platform_pci_power_manageable(dev)) {
-		error = platform_pci_set_power_state(dev, state);
-		if (!error)
-			pci_update_current_state(dev, state);
-	} else
-		error = -ENODEV;
-
-	if (error && !dev->pm_cap) /* Fall back to PCI_D0 */
+	error = platform_pci_set_power_state(dev, state);
+	if (!error)
+		pci_update_current_state(dev, state);
+	else if (!dev->pm_cap) /* Fall back to PCI_D0 */
 		dev->current_state = PCI_D0;
 
 	return error;
@@ -1388,44 +1388,6 @@ int pci_set_power_state(struct pci_dev *dev, pci_power_t state)
 }
 EXPORT_SYMBOL(pci_set_power_state);
 
-/**
- * pci_choose_state - Choose the power state of a PCI device
- * @dev: PCI device to be suspended
- * @state: target sleep state for the whole system. This is the value
- *	   that is passed to suspend() function.
- *
- * Returns PCI power state suitable for given device and given system
- * message.
- */
-pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state)
-{
-	pci_power_t ret;
-
-	if (!dev->pm_cap)
-		return PCI_D0;
-
-	ret = platform_pci_choose_state(dev);
-	if (ret != PCI_POWER_ERROR)
-		return ret;
-
-	switch (state.event) {
-	case PM_EVENT_ON:
-		return PCI_D0;
-	case PM_EVENT_FREEZE:
-	case PM_EVENT_PRETHAW:
-		/* REVISIT both freeze and pre-thaw "should" use D0 */
-	case PM_EVENT_SUSPEND:
-	case PM_EVENT_HIBERNATE:
-		return PCI_D3hot;
-	default:
-		pci_info(dev, "unrecognized suspend event %d\n",
-			 state.event);
-		BUG();
-	}
-	return PCI_D0;
-}
-EXPORT_SYMBOL(pci_choose_state);
-
 #define PCI_EXP_SAVE_REGS	7
 
 static struct pci_cap_saved_state *_pci_find_saved_cap(struct pci_dev *pci_dev,
@@ -2577,8 +2539,6 @@ EXPORT_SYMBOL(pci_wake_from_d3);
  */
 static pci_power_t pci_target_state(struct pci_dev *dev, bool wakeup)
 {
-	pci_power_t target_state = PCI_D3hot;
-
 	if (platform_pci_power_manageable(dev)) {
 		/*
 		 * Call the platform to find the target state for the device.
@@ -2588,32 +2548,29 @@ static pci_power_t pci_target_state(struct pci_dev *dev, bool wakeup)
 		switch (state) {
 		case PCI_POWER_ERROR:
 		case PCI_UNKNOWN:
-			break;
+			return PCI_D3hot;
+
 		case PCI_D1:
 		case PCI_D2:
 			if (pci_no_d1d2(dev))
-				break;
-			fallthrough;
-		default:
-			target_state = state;
+				return PCI_D3hot;
 		}
 
-		return target_state;
+		return state;
 	}
 
-	if (!dev->pm_cap)
-		target_state = PCI_D0;
-
 	/*
 	 * If the device is in D3cold even though it's not power-manageable by
 	 * the platform, it may have been powered down by non-standard means.
 	 * Best to let it slumber.
 	 */
 	if (dev->current_state == PCI_D3cold)
-		target_state = PCI_D3cold;
+		return PCI_D3cold;
+	else if (!dev->pm_cap)
+		return PCI_D0;
 
 	if (wakeup && dev->pme_support) {
-		pci_power_t state = target_state;
+		pci_power_t state = PCI_D3hot;
 
 		/*
 		 * Find the deepest state from which the device can generate
@@ -2628,7 +2585,7 @@ static pci_power_t pci_target_state(struct pci_dev *dev, bool wakeup)
 			return PCI_D0;
 	}
 
-	return target_state;
+	return PCI_D3hot;
 }
 
 /**
@@ -2681,8 +2638,13 @@ EXPORT_SYMBOL(pci_prepare_to_sleep);
  */
 int pci_back_from_sleep(struct pci_dev *dev)
 {
+	int ret = pci_set_power_state(dev, PCI_D0);
+
+	if (ret)
+		return ret;
+
 	pci_enable_wake(dev, PCI_D0, false);
-	return pci_set_power_state(dev, PCI_D0);
+	return 0;
 }
 EXPORT_SYMBOL(pci_back_from_sleep);
 
@@ -2842,6 +2804,22 @@ void pci_dev_complete_resume(struct pci_dev *pci_dev)
 	spin_unlock_irq(&dev->power.lock);
 }
 
+/**
+ * pci_choose_state - Choose the power state of a PCI device.
+ * @dev: Target PCI device.
+ * @state: Target state for the whole system.
+ *
+ * Returns PCI power state suitable for @dev and @state.
+ */
+pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state)
+{
+	if (state.event == PM_EVENT_ON)
+		return PCI_D0;
+
+	return pci_target_state(dev, false);
+}
+EXPORT_SYMBOL(pci_choose_state);
+
 void pci_config_pm_runtime_get(struct pci_dev *pdev)
 {
 	struct device *dev = &pdev->dev;
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
index 1cce56c2aea0..bd39098c57da 100644
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h
@@ -63,45 +63,6 @@ struct pci_cap_saved_state *pci_find_saved_ext_cap(struct pci_dev *dev,
 #define PCI_PM_D3HOT_WAIT       10	/* msec */
 #define PCI_PM_D3COLD_WAIT      100	/* msec */
 
-/**
- * struct pci_platform_pm_ops - Firmware PM callbacks
- *
- * @bridge_d3: Does the bridge allow entering into D3
- *
- * @is_manageable: returns 'true' if given device is power manageable by the
- *		   platform firmware
- *
- * @set_state: invokes the platform firmware to set the device's power state
- *
- * @get_state: queries the platform firmware for a device's current power state
- *
- * @refresh_state: asks the platform to refresh the device's power state data
- *
- * @choose_state: returns PCI power state of given device preferred by the
- *		  platform; to be used during system-wide transitions from a
- *		  sleeping state to the working state and vice versa
- *
- * @set_wakeup: enables/disables wakeup capability for the device
- *
- * @need_resume: returns 'true' if the given device (which is currently
- *		 suspended) needs to be resumed to be configured for system
- *		 wakeup.
- *
- * If given platform is generally capable of power managing PCI devices, all of
- * these callbacks are mandatory.
- */
-struct pci_platform_pm_ops {
-	bool (*bridge_d3)(struct pci_dev *dev);
-	bool (*is_manageable)(struct pci_dev *dev);
-	int (*set_state)(struct pci_dev *dev, pci_power_t state);
-	pci_power_t (*get_state)(struct pci_dev *dev);
-	void (*refresh_state)(struct pci_dev *dev);
-	pci_power_t (*choose_state)(struct pci_dev *dev);
-	int (*set_wakeup)(struct pci_dev *dev, bool enable);
-	bool (*need_resume)(struct pci_dev *dev);
-};
-
-int pci_set_platform_pm(const struct pci_platform_pm_ops *ops);
 void pci_update_current_state(struct pci_dev *dev, pci_power_t state);
 void pci_refresh_power_state(struct pci_dev *dev);
 int pci_power_up(struct pci_dev *dev);
@@ -725,17 +686,53 @@ int pci_acpi_program_hp_params(struct pci_dev *dev);
 extern const struct attribute_group pci_dev_acpi_attr_group;
 void pci_set_acpi_fwnode(struct pci_dev *dev);
 int pci_dev_acpi_reset(struct pci_dev *dev, bool probe);
+bool acpi_pci_power_manageable(struct pci_dev *dev);
+bool acpi_pci_bridge_d3(struct pci_dev *dev);
+int acpi_pci_set_power_state(struct pci_dev *dev, pci_power_t state);
+pci_power_t acpi_pci_get_power_state(struct pci_dev *dev);
+void acpi_pci_refresh_power_state(struct pci_dev *dev);
+int acpi_pci_wakeup(struct pci_dev *dev, bool enable);
+bool acpi_pci_need_resume(struct pci_dev *dev);
+pci_power_t acpi_pci_choose_state(struct pci_dev *pdev);
 #else
 static inline int pci_dev_acpi_reset(struct pci_dev *dev, bool probe)
 {
 	return -ENOTTY;
 }
-
 static inline void pci_set_acpi_fwnode(struct pci_dev *dev) {}
 static inline int pci_acpi_program_hp_params(struct pci_dev *dev)
 {
 	return -ENODEV;
 }
+static inline bool acpi_pci_power_manageable(struct pci_dev *dev)
+{
+	return false;
+}
+static inline bool acpi_pci_bridge_d3(struct pci_dev *dev)
+{
+	return false;
+}
+static inline int acpi_pci_set_power_state(struct pci_dev *dev, pci_power_t state)
+{
+	return -ENODEV;
+}
+static inline pci_power_t acpi_pci_get_power_state(struct pci_dev *dev)
+{
+	return PCI_UNKNOWN;
+}
+static inline void acpi_pci_refresh_power_state(struct pci_dev *dev) {}
+static inline int acpi_pci_wakeup(struct pci_dev *dev, bool enable)
+{
+	return -ENODEV;
+}
+static inline bool acpi_pci_need_resume(struct pci_dev *dev)
+{
+	return false;
+}
+static inline pci_power_t acpi_pci_choose_state(struct pci_dev *pdev)
+{
+	return PCI_POWER_ERROR;
+}
 #endif
 
 #ifdef CONFIG_PCIEASPM
@@ -744,4 +741,23 @@ extern const struct attribute_group aspm_ctrl_attr_group;
 
 extern const struct attribute_group pci_dev_reset_method_attr_group;
 
+#ifdef CONFIG_X86_INTEL_MID
+bool pci_use_mid_pm(void);
+int mid_pci_set_power_state(struct pci_dev *pdev, pci_power_t state);
+pci_power_t mid_pci_get_power_state(struct pci_dev *pdev);
+#else
+static inline bool pci_use_mid_pm(void)
+{
+	return false;
+}
+static inline int mid_pci_set_power_state(struct pci_dev *pdev, pci_power_t state)
+{
+	return -ENODEV;
+}
+static inline pci_power_t mid_pci_get_power_state(struct pci_dev *pdev)
+{
+	return PCI_UNKNOWN;
+}
+#endif
+
 #endif /* DRIVERS_PCI_H */