include/linux/pci-acpi.h

   1 /*
   2  * File         pci-acpi.h
   3  *
   4  * Copyright (C) 2004 Intel
   5  * Copyright (C) Tom Long Nguyen (tom.l.nguyen@intel.com)
   6  */
   7
   8 #ifndef _PCI_ACPI_H_
   9 #define _PCI_ACPI_H_
  10
  11 #include <linux/acpi.h>
  12
  13 #ifdef CONFIG_ACPI
  14 extern acpi_status pci_acpi_add_bus_pm_notifier(struct acpi_device *dev,
  15                                                  struct pci_bus *pci_bus);
  16 extern acpi_status pci_acpi_remove_bus_pm_notifier(struct acpi_device *dev);
  17 extern acpi_status pci_acpi_add_pm_notifier(struct acpi_device *dev,
  18                                              struct pci_dev *pci_dev);
  19 extern acpi_status pci_acpi_remove_pm_notifier(struct acpi_device *dev);
  20
  21 static inline acpi_handle acpi_find_root_bridge_handle(struct pci_dev *pdev)
  22 {
  23         struct pci_bus *pbus = pdev->bus;
  24         /* Find a PCI root bus */
  25         while (!pci_is_root_bus(pbus))
  26                 pbus = pbus->parent;
  27         return acpi_get_pci_rootbridge_handle(pci_domain_nr(pbus),
  28                                               pbus->number);
  29 }
  30
  31 static inline acpi_handle acpi_pci_get_bridge_handle(struct pci_bus *pbus)
  32 {
  33         if (!pci_is_root_bus(pbus))
  34                 return DEVICE_ACPI_HANDLE(&(pbus->self->dev));
  35         return acpi_get_pci_rootbridge_handle(pci_domain_nr(pbus),
  36                                               pbus->number);
  37 }
  38 #else
  39 static inline acpi_handle acpi_find_root_bridge_handle(struct pci_dev *pdev)
  40 { return NULL; }
  41 #endif
  42
  43 #endif  /* _PCI_ACPI_H_ */