diff options
| -rw-r--r-- | drivers/pci/pci.c | 20 | ||||
| -rw-r--r-- | drivers/pci/pci.h | 1 | ||||
| -rw-r--r-- | drivers/pci/probe.c | 1 |
3 files changed, 22 insertions, 0 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 7e9c0f3936d..1b807330e50 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -1286,6 +1286,26 @@ void pci_pm_init(struct pci_dev *dev) } /** + * platform_pci_wakeup_init - init platform wakeup if present + * @dev: PCI device + * + * Some devices don't have PCI PM caps but can still generate wakeup + * events through platform methods (like ACPI events). If @dev supports + * platform wakeup events, set the device flag to indicate as much. This + * may be redundant if the device also supports PCI PM caps, but double + * initialization should be safe in that case. + */ +void platform_pci_wakeup_init(struct pci_dev *dev) +{ + if (!platform_pci_can_wakeup(dev)) + return; + + device_set_wakeup_capable(&dev->dev, true); + device_set_wakeup_enable(&dev->dev, false); + platform_pci_sleep_wake(dev, false); +} + +/** * pci_add_save_buffer - allocate buffer for saving given capability registers * @dev: the PCI device * @cap: the capability to allocate the buffer for diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h index d1e92d83aa0..65deed8bfc0 100644 --- a/drivers/pci/pci.h +++ b/drivers/pci/pci.h @@ -45,6 +45,7 @@ struct pci_platform_pm_ops { extern int pci_set_platform_pm(struct pci_platform_pm_ops *ops); extern void pci_pm_init(struct pci_dev *dev); +extern void platform_pci_wakeup_init(struct pci_dev *dev); extern void pci_allocate_cap_save_buffers(struct pci_dev *dev); extern int pci_user_read_config_byte(struct pci_dev *dev, int where, u8 *val); diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 2ee00962734..303644614ee 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -965,6 +965,7 @@ static void pci_init_capabilities(struct pci_dev *dev) /* Power Management */ pci_pm_init(dev); + platform_pci_wakeup_init(dev); /* Vital Product Data */ pci_vpd_pci22_init(dev); |