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Merge branch 'pci/aspm'

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- Remove unnecessary ASPM locking (Bjorn Helgaas)

  - Add support for disabling L1 PM Substates (Heiner Kallweit)

  - Allow re-enabling Clock PM after it has been disabled (Heiner Kallweit)

  - Add sysfs attributes for controlling ASPM link states (Heiner Kallweit)

  - Remove CONFIG_PCIEASPM_DEBUG, including "link_state" and "clk_ctl"
    sysfs files (Heiner Kallweit)

* pci/aspm:
  PCI/ASPM: Remove PCIEASPM_DEBUG Kconfig option and related code
  PCI/ASPM: Add sysfs attributes for controlling ASPM link states
  PCI/ASPM: Add pcie_aspm_get_link()
  PCI/ASPM: Allow re-enabling Clock PM
  PCI/ASPM: Add L1 PM substate support to pci_disable_link_state()
  PCI/ASPM: Remove pcie_aspm_enabled() unnecessary locking
This commit is contained in:
Bjorn Helgaas
2019-11-28 08:54:29 -06:00
parent c2a3d213d1 87e90283c9
commit abd05c97f9
6 changed files with 186 additions and 117 deletions
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12
drivers/pci/pci.h
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@@ -542,14 +542,6 @@ static inline void pcie_aspm_pm_state_change(struct pci_dev *pdev) { }
static inline void pcie_aspm_powersave_config_link(struct pci_dev *pdev) { }
#endif
#ifdef CONFIG_PCIEASPM_DEBUG
void pcie_aspm_create_sysfs_dev_files(struct pci_dev *pdev);
void pcie_aspm_remove_sysfs_dev_files(struct pci_dev *pdev);
#else
static inline void pcie_aspm_create_sysfs_dev_files(struct pci_dev *pdev) { }
static inline void pcie_aspm_remove_sysfs_dev_files(struct pci_dev *pdev) { }
#endif
#ifdef CONFIG_PCIE_ECRC
void pcie_set_ecrc_checking(struct pci_dev *dev);
void pcie_ecrc_get_policy(char *str);
@@ -668,4 +660,8 @@ static inline int pci_acpi_program_hp_params(struct pci_dev *dev)
}
#endif
#ifdef CONFIG_PCIEASPM
extern const struct attribute_group aspm_ctrl_attr_group;
#endif
#endif /* DRIVERS_PCI_H */