130 lines
3.9 KiB
C
130 lines
3.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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// Copyright (c) 2022 Pengutronix, Oleksij Rempel <kernel@pengutronix.de>
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*/
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#ifndef _LINUX_PSE_CONTROLLER_H
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#define _LINUX_PSE_CONTROLLER_H
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#include <linux/ethtool.h>
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#include <linux/list.h>
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#include <uapi/linux/ethtool.h>
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struct phy_device;
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struct pse_controller_dev;
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/**
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* struct pse_control_config - PSE control/channel configuration.
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*
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* @admin_cotrol: set PoDL PSE admin control as described in
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* IEEE 802.3-2018 30.15.1.2.1 acPoDLPSEAdminControl
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*/
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struct pse_control_config {
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enum ethtool_podl_pse_admin_state admin_cotrol;
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};
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/**
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* struct pse_control_status - PSE control/channel status.
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*
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* @podl_admin_state: operational state of the PoDL PSE
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* functions. IEEE 802.3-2018 30.15.1.1.2 aPoDLPSEAdminState
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* @podl_pw_status: power detection status of the PoDL PSE.
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* IEEE 802.3-2018 30.15.1.1.3 aPoDLPSEPowerDetectionStatus:
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*/
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struct pse_control_status {
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enum ethtool_podl_pse_admin_state podl_admin_state;
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enum ethtool_podl_pse_pw_d_status podl_pw_status;
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};
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/**
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* struct pse_controller_ops - PSE controller driver callbacks
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*
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* @ethtool_get_status: get PSE control status for ethtool interface
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* @ethtool_set_config: set PSE control configuration over ethtool interface
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*/
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struct pse_controller_ops {
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int (*ethtool_get_status)(struct pse_controller_dev *pcdev,
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unsigned long id, struct netlink_ext_ack *extack,
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struct pse_control_status *status);
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int (*ethtool_set_config)(struct pse_controller_dev *pcdev,
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unsigned long id, struct netlink_ext_ack *extack,
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const struct pse_control_config *config);
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};
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struct module;
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struct device_node;
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struct of_phandle_args;
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struct pse_control;
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/**
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* struct pse_controller_dev - PSE controller entity that might
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* provide multiple PSE controls
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* @ops: a pointer to device specific struct pse_controller_ops
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* @owner: kernel module of the PSE controller driver
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* @list: internal list of PSE controller devices
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* @pse_control_head: head of internal list of requested PSE controls
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* @dev: corresponding driver model device struct
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* @of_pse_n_cells: number of cells in PSE line specifiers
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* @of_xlate: translation function to translate from specifier as found in the
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* device tree to id as given to the PSE control ops
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* @nr_lines: number of PSE controls in this controller device
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* @lock: Mutex for serialization access to the PSE controller
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*/
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struct pse_controller_dev {
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const struct pse_controller_ops *ops;
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struct module *owner;
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struct list_head list;
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struct list_head pse_control_head;
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struct device *dev;
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int of_pse_n_cells;
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int (*of_xlate)(struct pse_controller_dev *pcdev,
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const struct of_phandle_args *pse_spec);
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unsigned int nr_lines;
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struct mutex lock;
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};
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#if IS_ENABLED(CONFIG_PSE_CONTROLLER)
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int pse_controller_register(struct pse_controller_dev *pcdev);
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void pse_controller_unregister(struct pse_controller_dev *pcdev);
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struct device;
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int devm_pse_controller_register(struct device *dev,
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struct pse_controller_dev *pcdev);
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struct pse_control *of_pse_control_get(struct device_node *node);
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void pse_control_put(struct pse_control *psec);
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int pse_ethtool_get_status(struct pse_control *psec,
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struct netlink_ext_ack *extack,
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struct pse_control_status *status);
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int pse_ethtool_set_config(struct pse_control *psec,
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struct netlink_ext_ack *extack,
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const struct pse_control_config *config);
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#else
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static inline struct pse_control *of_pse_control_get(struct device_node *node)
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{
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return ERR_PTR(-ENOENT);
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}
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static inline void pse_control_put(struct pse_control *psec)
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{
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}
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static inline int pse_ethtool_get_status(struct pse_control *psec,
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struct netlink_ext_ack *extack,
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struct pse_control_status *status)
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{
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return -ENOTSUPP;
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}
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static inline int pse_ethtool_set_config(struct pse_control *psec,
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struct netlink_ext_ack *extack,
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const struct pse_control_config *config)
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{
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return -ENOTSUPP;
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}
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#endif
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#endif
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