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| author | Mika Westerberg <mika.westerberg@linux.intel.com> | 2018-09-27 16:41:48 -0500 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2018-10-02 16:04:40 -0500 |
| commit | 94c7993fb5bd1e3c20f67a2d24ba05bbdc938340 (patch) | |
| tree | 0d8844b4cf57b4d7caff8ca5ab48869bb85ddf76 /drivers/pci/pcie/portdrv.h | |
| parent | 52be9464aa7edeeda35f7faecb162412ddb47e94 (diff) | |
| download | lwn-94c7993fb5bd1e3c20f67a2d24ba05bbdc938340.tar.gz lwn-94c7993fb5bd1e3c20f67a2d24ba05bbdc938340.zip | |
PCI/portdrv: Add runtime PM hooks for port service drivers
When PCIe port is runtime suspended/resumed some extra steps might be
needed to be executed from the port service driver side. For instance we
may need to disable PCIe hotplug interrupt to prevent it from triggering
immediately when PCIe link to the downstream component goes down.
To make the above possible add optional ->runtime_suspend() and
->runtime_resume() callbacks to struct pcie_port_service_driver and call
them for each port service in runtime suspend/resume callbacks of portdrv.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
[bhelgaas: adjust "slot->state" for 5790a9c78e78 ("PCI: pciehp: Unify
controller and slot structs")]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/pci/pcie/portdrv.h')
| -rw-r--r-- | drivers/pci/pcie/portdrv.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/pci/pcie/portdrv.h b/drivers/pci/pcie/portdrv.h index 2498b2d34009..abfdc2ae7979 100644 --- a/drivers/pci/pcie/portdrv.h +++ b/drivers/pci/pcie/portdrv.h @@ -76,6 +76,8 @@ struct pcie_port_service_driver { int (*suspend) (struct pcie_device *dev); int (*resume_noirq) (struct pcie_device *dev); int (*resume) (struct pcie_device *dev); + int (*runtime_suspend) (struct pcie_device *dev); + int (*runtime_resume) (struct pcie_device *dev); /* Device driver may resume normal operations */ void (*error_resume)(struct pci_dev *dev); @@ -109,6 +111,8 @@ int pcie_port_device_register(struct pci_dev *dev); int pcie_port_device_suspend(struct device *dev); int pcie_port_device_resume_noirq(struct device *dev); int pcie_port_device_resume(struct device *dev); +int pcie_port_device_runtime_suspend(struct device *dev); +int pcie_port_device_runtime_resume(struct device *dev); #endif void pcie_port_device_remove(struct pci_dev *dev); int __must_check pcie_port_bus_register(void); |