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/*
* phy.h -- generic phy header file
*
* Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com
*
* Author: Kishon Vijay Abraham I <kishon@ti.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef __DRIVERS_PHY_H
#define __DRIVERS_PHY_H
#include <linux/err.h>
#include <linux/of.h>
#include <linux/device.h>
#include <linux/pm_runtime.h>
struct phy;
/**
* struct phy_ops - set of function pointers for performing phy operations
* @init: operation to be performed for initializing phy
* @exit: operation to be performed while exiting
* @power_on: powering on the phy
* @power_off: powering off the phy
* @owner: the module owner containing the ops
*/
struct phy_ops {
int (*init)(struct phy *phy);
int (*exit)(struct phy *phy);
int (*power_on)(struct phy *phy);
int (*power_off)(struct phy *phy);
struct module *owner;
};
/**
* struct phy - represents the phy device
* @dev: phy device
* @id: id of the phy device
* @ops: function pointers for performing phy operations
* @init_data: list of PHY consumers (non-dt only)
* @mutex: mutex to protect phy_ops
* @init_count: used to protect when the PHY is used by multiple consumers
* @power_count: used to protect when the PHY is used by multiple consumers
*/
struct phy {
struct device dev;
int id;
const struct phy_ops *ops;
struct phy_init_data *init_data;
struct mutex mutex;
int init_count;
int power_count;
};
/**
* struct phy_provider - represents the phy provider
* @dev: phy provider device
* @owner: the module owner having of_xlate
* @of_xlate: function pointer to obtain phy instance from phy pointer
* @list: to maintain a linked list of PHY providers
*/
struct phy_provider {
struct device *dev;
struct module *owner;
struct list_head list;
struct phy * (*of_xlate)(struct device *dev,
struct of_phandle_args *args);
};
/**
* struct phy_consumer - represents the phy consumer
* @dev_name: the device name of the controller that will use this PHY device
* @port: name given to the consumer port
*/
struct phy_consumer {
const char *dev_name;
const char *port;
};
/**
* struct phy_init_data - contains the list of PHY consumers
* @num_consumers: number of consumers for this PHY device
* @consumers: list of PHY consumers
*/
struct phy_init_data {
unsigned int num_consumers;
struct phy_consumer *consumers;
};
#define PHY_CONSUMER(_dev_name, _port) \
{ \
.dev_name = _dev_name, \
.port = _port, \
}
#define to_phy(dev) (container_of((dev), struct phy, dev))
#define of_phy_provider_register(dev, xlate) \
__of_phy_provider_register((dev), THIS_MODULE, (xlate))
#define devm_of_phy_provider_register(dev, xlate) \
__devm_of_phy_provider_register((dev), THIS_MODULE, (xlate))
static inline void phy_set_drvdata(struct phy *phy, void *data)
{
dev_set_drvdata(&phy->dev, data);
}
static inline void *phy_get_drvdata(struct phy *phy)
{
return dev_get_drvdata(&phy->dev);
}
#if IS_ENABLED(CONFIG_GENERIC_PHY)
int phy_pm_runtime_get(struct phy *phy);
int phy_pm_runtime_get_sync(struct phy *phy);
int phy_pm_runtime_put(struct phy *phy);
int phy_pm_runtime_put_sync(struct phy *phy);
void phy_pm_runtime_allow(struct phy *phy);
void phy_pm_runtime_forbid(struct phy *phy);
int phy_init(struct phy *phy);
int phy_exit(struct phy *phy);
int phy_power_on(struct phy *phy);
int phy_power_off(struct phy *phy);
struct phy *phy_get(struct device *dev, const char *string);
struct phy *devm_phy_get(struct device *dev, const char *string);
void phy_put(struct phy *phy);
void devm_phy_put(struct device *dev, struct phy *phy);
struct phy *of_phy_simple_xlate(struct device *dev,
struct of_phandle_args *args);
struct phy *phy_create(struct device *dev, const struct phy_ops *ops,
struct phy_init_data *init_data);
struct phy *devm_phy_create(struct device *dev,
const struct phy_ops *ops, struct phy_init_data *init_data);
void phy_destroy(struct phy *phy);
void devm_phy_destroy(struct device *dev, struct phy *phy);
struct phy_provider *__of_phy_provider_register(struct device *dev,
struct module *owner, struct phy * (*of_xlate)(struct device *dev,
struct of_phandle_args *args));
struct phy_provider *__devm_of_phy_provider_register(struct device *dev,
struct module *owner, struct phy * (*of_xlate)(struct device *dev,
struct of_phandle_args *args));
void of_phy_provider_unregister(struct phy_provider *phy_provider);
void devm_of_phy_provider_unregister(struct device *dev,
struct phy_provider *phy_provider);
#else
static inline int phy_pm_runtime_get(struct phy *phy)
{
return -ENOSYS;
}
static inline int phy_pm_runtime_get_sync(struct phy *phy)
{
return -ENOSYS;
}
static inline int phy_pm_runtime_put(struct phy *phy)
{
return -ENOSYS;
}
static inline int phy_pm_runtime_put_sync(struct phy *phy)
{
return -ENOSYS;
}
static inline void phy_pm_runtime_allow(struct phy *phy)
{
return;
}
static inline void phy_pm_runtime_forbid(struct phy *phy)
{
return;
}
static inline int phy_init(struct phy *phy)
{
return -ENOSYS;
}
static inline int phy_exit(struct phy *phy)
{
return -ENOSYS;
}
static inline int phy_power_on(struct phy *phy)
{
return -ENOSYS;
}
static inline int phy_power_off(struct phy *phy)
{
return -ENOSYS;
}
static inline struct phy *phy_get(struct device *dev, const char *string)
{
return ERR_PTR(-ENOSYS);
}
static inline struct phy *devm_phy_get(struct device *dev, const char *string)
{
return ERR_PTR(-ENOSYS);
}
static inline void phy_put(struct phy *phy)
{
}
static inline void devm_phy_put(struct device *dev, struct phy *phy)
{
}
static inline struct phy *of_phy_simple_xlate(struct device *dev,
struct of_phandle_args *args)
{
return ERR_PTR(-ENOSYS);
}
static inline struct phy *phy_create(struct device *dev,
const struct phy_ops *ops, struct phy_init_data *init_data)
{
return ERR_PTR(-ENOSYS);
}
static inline struct phy *devm_phy_create(struct device *dev,
const struct phy_ops *ops, struct phy_init_data *init_data)
{
return ERR_PTR(-ENOSYS);
}
static inline void phy_destroy(struct phy *phy)
{
}
static inline void devm_phy_destroy(struct device *dev, struct phy *phy)
{
}
static inline struct phy_provider *__of_phy_provider_register(
struct device *dev, struct module *owner, struct phy * (*of_xlate)(
struct device *dev, struct of_phandle_args *args))
{
return ERR_PTR(-ENOSYS);
}
static inline struct phy_provider *__devm_of_phy_provider_register(struct device
*dev, struct module *owner, struct phy * (*of_xlate)(struct device *dev,
struct of_phandle_args *args))
{
return ERR_PTR(-ENOSYS);
}
static inline void of_phy_provider_unregister(struct phy_provider *phy_provider)
{
}
static inline void devm_of_phy_provider_unregister(struct device *dev,
struct phy_provider *phy_provider)
{
}
#endif
#endif /* __DRIVERS_PHY_H */