pci/pwrctrl/core.c

1 // SPDX-License-Identifier: GPL-2.0-only
10 #include <linux/pci-pwrctrl.h>
20 	if (dev_fwnode(dev) != dev_fwnode(pwrctrl->dev))  in pci_pwrctrl_notify()
34 		dev->of_node_reused = true;  in pci_pwrctrl_notify()
47 	pci_rescan_bus(to_pci_host_bridge(pwrctrl->dev->parent)->bus);  in rescan_work_func()
52  * pci_pwrctrl_init() - Initialize the PCI power control context struct
59 	pwrctrl->dev = dev;  in pci_pwrctrl_init()
60 	INIT_WORK(&pwrctrl->work, rescan_work_func);  in pci_pwrctrl_init()
65  * pci_pwrctrl_device_set_ready() - Notify the pwrctrl subsystem that the PCI
66  * device is powered-up and ready to be detected.
75  * that the bus rescan was successfully started. The device will get bound to
82 	if (!pwrctrl->dev)  in pci_pwrctrl_device_set_ready()
83 		return -ENODEV;  in pci_pwrctrl_device_set_ready()
85 	pwrctrl->nb.notifier_call = pci_pwrctrl_notify;  in pci_pwrctrl_device_set_ready()
86 	ret = bus_register_notifier(&pci_bus_type, &pwrctrl->nb);  in pci_pwrctrl_device_set_ready()
90 	schedule_work(&pwrctrl->work);  in pci_pwrctrl_device_set_ready()
97  * pci_pwrctrl_device_unset_ready() - Notify the pwrctrl subsystem that the PCI
98  * device is about to be powered-down.
110 	bus_unregister_notifier(&pci_bus_type, &pwrctrl->nb);  in pci_pwrctrl_device_unset_ready()
122  * devm_pci_pwrctrl_device_set_ready - Managed variant of