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Diffstat (limited to 'include/linux/pci-pwrctl.h')
| -rw-r--r-- | include/linux/pci-pwrctl.h | 54 |
1 files changed, 0 insertions, 54 deletions
diff --git a/include/linux/pci-pwrctl.h b/include/linux/pci-pwrctl.h deleted file mode 100644 index 0d23dddf59ec..000000000000 --- a/include/linux/pci-pwrctl.h +++ /dev/null @@ -1,54 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-only */ -/* - * Copyright (C) 2024 Linaro Ltd. - */ - -#ifndef __PCI_PWRCTL_H__ -#define __PCI_PWRCTL_H__ - -#include <linux/notifier.h> -#include <linux/workqueue.h> - -struct device; -struct device_link; - -/* - * This is a simple framework for solving the issue of PCI devices that require - * certain resources (regulators, GPIOs, clocks) to be enabled before the - * device can actually be detected on the PCI bus. - * - * The idea is to reuse the platform bus to populate OF nodes describing the - * PCI device and its resources, let these platform devices probe and enable - * relevant resources and then trigger a rescan of the PCI bus allowing for the - * same device (with a second associated struct device) to be registered with - * the PCI subsystem. - * - * To preserve a correct hierarchy for PCI power management and device reset, - * we create a device link between the power control platform device (parent) - * and the supplied PCI device (child). - */ - -/** - * struct pci_pwrctl - PCI device power control context. - * @dev: Address of the power controlling device. - * - * An object of this type must be allocated by the PCI power control device and - * passed to the pwrctl subsystem to trigger a bus rescan and setup a device - * link with the device once it's up. - */ -struct pci_pwrctl { - struct device *dev; - - /* Private: don't use. */ - struct notifier_block nb; - struct device_link *link; - struct work_struct work; -}; - -void pci_pwrctl_init(struct pci_pwrctl *pwrctl, struct device *dev); -int pci_pwrctl_device_set_ready(struct pci_pwrctl *pwrctl); -void pci_pwrctl_device_unset_ready(struct pci_pwrctl *pwrctl); -int devm_pci_pwrctl_device_set_ready(struct device *dev, - struct pci_pwrctl *pwrctl); - -#endif /* __PCI_PWRCTL_H__ */ |
