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Commit 5e3d2344 authored by Bjorn Helgaas's avatar Bjorn Helgaas
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PCI: Shuffle pci-acpi.c functions to group them logically 



Move code around to put all the ACPI power management stuff together and
all the pieces related to ACPI methods (_CBA, _HPP, _HPX) together.

No functional change.

Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
parent abbfec34

drivers/pci/pci-acpi.c

+67 −67
Original line number Diff line number Diff line
@@ -18,73 +18,6 @@ 
#include <linux/pm_qos.h>

#include "pci.h"



/**

 * pci_acpi_wake_bus - Root bus wakeup notification fork function.

 * @work: Work item to handle.

 */

static void pci_acpi_wake_bus(struct work_struct *work)

{

	struct acpi_device *adev;

	struct acpi_pci_root *root;



	adev = container_of(work, struct acpi_device, wakeup.context.work);

	root = acpi_driver_data(adev);

	pci_pme_wakeup_bus(root->bus);

}



/**

 * pci_acpi_wake_dev - PCI device wakeup notification work function.

 * @handle: ACPI handle of a device the notification is for.

 * @work: Work item to handle.

 */

static void pci_acpi_wake_dev(struct work_struct *work)

{

	struct acpi_device_wakeup_context *context;

	struct pci_dev *pci_dev;



	context = container_of(work, struct acpi_device_wakeup_context, work);

	pci_dev = to_pci_dev(context->dev);



	if (pci_dev->pme_poll)

		pci_dev->pme_poll = false;



	if (pci_dev->current_state == PCI_D3cold) {

		pci_wakeup_event(pci_dev);

		pm_runtime_resume(&pci_dev->dev);

		return;

	}



	/* Clear PME Status if set. */

	if (pci_dev->pme_support)

		pci_check_pme_status(pci_dev);



	pci_wakeup_event(pci_dev);

	pm_runtime_resume(&pci_dev->dev);



	if (pci_dev->subordinate)

		pci_pme_wakeup_bus(pci_dev->subordinate);

}



/**

 * pci_acpi_add_bus_pm_notifier - Register PM notifier for root PCI bus.

 * @dev: PCI root bridge ACPI device.

 */

acpi_status pci_acpi_add_bus_pm_notifier(struct acpi_device *dev)

{

	return acpi_add_pm_notifier(dev, NULL, pci_acpi_wake_bus);

}



/**

 * pci_acpi_add_pm_notifier - Register PM notifier for given PCI device.

 * @dev: ACPI device to add the notifier for.

 * @pci_dev: PCI device to check for the PME status if an event is signaled.

 */

acpi_status pci_acpi_add_pm_notifier(struct acpi_device *dev,

				     struct pci_dev *pci_dev)

{

	return acpi_add_pm_notifier(dev, &pci_dev->dev, pci_acpi_wake_dev);

}



phys_addr_t acpi_pci_root_get_mcfg_addr(acpi_handle handle)

{

	acpi_status status = AE_NOT_EXIST;
@@ -346,6 +279,73 @@ int pci_get_hp_params(struct pci_dev *dev, struct hotplug_params *hpp) 
}

EXPORT_SYMBOL_GPL(pci_get_hp_params);



/**

 * pci_acpi_wake_bus - Root bus wakeup notification fork function.

 * @work: Work item to handle.

 */

static void pci_acpi_wake_bus(struct work_struct *work)

{

	struct acpi_device *adev;

	struct acpi_pci_root *root;



	adev = container_of(work, struct acpi_device, wakeup.context.work);

	root = acpi_driver_data(adev);

	pci_pme_wakeup_bus(root->bus);

}



/**

 * pci_acpi_wake_dev - PCI device wakeup notification work function.

 * @handle: ACPI handle of a device the notification is for.

 * @work: Work item to handle.

 */

static void pci_acpi_wake_dev(struct work_struct *work)

{

	struct acpi_device_wakeup_context *context;

	struct pci_dev *pci_dev;



	context = container_of(work, struct acpi_device_wakeup_context, work);

	pci_dev = to_pci_dev(context->dev);



	if (pci_dev->pme_poll)

		pci_dev->pme_poll = false;



	if (pci_dev->current_state == PCI_D3cold) {

		pci_wakeup_event(pci_dev);

		pm_runtime_resume(&pci_dev->dev);

		return;

	}



	/* Clear PME Status if set. */

	if (pci_dev->pme_support)

		pci_check_pme_status(pci_dev);



	pci_wakeup_event(pci_dev);

	pm_runtime_resume(&pci_dev->dev);



	if (pci_dev->subordinate)

		pci_pme_wakeup_bus(pci_dev->subordinate);

}



/**

 * pci_acpi_add_bus_pm_notifier - Register PM notifier for root PCI bus.

 * @dev: PCI root bridge ACPI device.

 */

acpi_status pci_acpi_add_bus_pm_notifier(struct acpi_device *dev)

{

	return acpi_add_pm_notifier(dev, NULL, pci_acpi_wake_bus);

}



/**

 * pci_acpi_add_pm_notifier - Register PM notifier for given PCI device.

 * @dev: ACPI device to add the notifier for.

 * @pci_dev: PCI device to check for the PME status if an event is signaled.

 */

acpi_status pci_acpi_add_pm_notifier(struct acpi_device *dev,

				     struct pci_dev *pci_dev)

{

	return acpi_add_pm_notifier(dev, &pci_dev->dev, pci_acpi_wake_dev);

}



/*

 * _SxD returns the D-state with the highest power

 * (lowest D-state number) supported in the S-state "x".