mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-10 21:32:57 +00:00
84e561407a
In drivers usb/host/{ehci,ohci}-generic.c, {ehci,ohci}_setup_phy() and {ehci,ohci}_shutdown_phy() shares 95% of common code. Factorize this code in new generic_{setup,shudown}_phy() functions. Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com> Cc: Marek Vasut <marex@denx.de> Cc: Simon Glass <sjg@chromium.org>
453 lines
12 KiB
C
453 lines
12 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
|
|
/*
|
|
* Copyright (C) 2017 Texas Instruments Incorporated - http://www.ti.com/
|
|
* Written by Jean-Jacques Hiblot <jjhiblot@ti.com>
|
|
*/
|
|
|
|
#ifndef __GENERIC_PHY_H
|
|
#define __GENERIC_PHY_H
|
|
|
|
#include <dm/ofnode.h>
|
|
|
|
struct ofnode_phandle_args;
|
|
|
|
/**
|
|
* struct phy - A handle to (allowing control of) a single phy port.
|
|
*
|
|
* Clients provide storage for phy handles. The content of the structure is
|
|
* managed solely by the PHY API and PHY drivers. A phy struct is
|
|
* initialized by "get"ing the phy struct. The phy struct is passed to all
|
|
* other phy APIs to identify which PHY port to operate upon.
|
|
*
|
|
* @dev: The device which implements the PHY port.
|
|
* @id: The PHY ID within the provider.
|
|
*
|
|
*/
|
|
struct phy {
|
|
struct udevice *dev;
|
|
unsigned long id;
|
|
};
|
|
|
|
/*
|
|
* struct udevice_ops - set of function pointers for phy operations
|
|
* @init: operation to be performed for initializing phy (optional)
|
|
* @exit: operation to be performed while exiting (optional)
|
|
* @reset: reset the phy (optional).
|
|
* @power_on: powering on the phy (optional)
|
|
* @power_off: powering off the phy (optional)
|
|
*/
|
|
struct phy_ops {
|
|
/**
|
|
* of_xlate - Translate a client's device-tree (OF) phy specifier.
|
|
*
|
|
* The PHY core calls this function as the first step in implementing
|
|
* a client's generic_phy_get_by_*() call.
|
|
*
|
|
* If this function pointer is set to NULL, the PHY core will use a
|
|
* default implementation, which assumes #phy-cells = <0> or
|
|
* #phy-cells = <1>, and in the later case that the DT cell
|
|
* contains a simple integer PHY port ID.
|
|
*
|
|
* @phy: The phy struct to hold the translation result.
|
|
* @args: The phy specifier values from device tree.
|
|
* @return 0 if OK, or a negative error code.
|
|
*/
|
|
int (*of_xlate)(struct phy *phy, struct ofnode_phandle_args *args);
|
|
|
|
/**
|
|
* init - initialize the hardware.
|
|
*
|
|
* Hardware intialization should not be done in during probe() but
|
|
* should be implemented in this init() function. It could be starting
|
|
* PLL, taking a controller out of reset, routing, etc. This function
|
|
* is typically called only once per PHY port.
|
|
* If power_on() is not implemented, it must power up the phy.
|
|
*
|
|
* @phy: the PHY port to initialize
|
|
* @return 0 if OK, or a negative error code.
|
|
*/
|
|
int (*init)(struct phy *phy);
|
|
|
|
/**
|
|
* exit - de-initialize the PHY device
|
|
*
|
|
* Hardware de-intialization should be done here. Every step done in
|
|
* init() should be undone here.
|
|
* This could be used to suspend the phy to reduce power consumption or
|
|
* to put the phy in a known condition before booting the OS (though it
|
|
* is NOT called automatically before booting the OS)
|
|
* If power_off() is not implemented, it must power down the phy.
|
|
*
|
|
* @phy: PHY port to be de-initialized
|
|
* Return: 0 if OK, or a negative error code
|
|
*/
|
|
int (*exit)(struct phy *phy);
|
|
|
|
/**
|
|
* reset - resets a PHY device without shutting down
|
|
*
|
|
* @phy: PHY port to be reset
|
|
*
|
|
* During runtime, the PHY may need to be reset in order to
|
|
* re-establish connection etc without being shut down or exit.
|
|
*
|
|
* Return: 0 if OK, or a negative error code
|
|
*/
|
|
int (*reset)(struct phy *phy);
|
|
|
|
/**
|
|
* power_on - power on a PHY device
|
|
*
|
|
* @phy: PHY port to be powered on
|
|
*
|
|
* During runtime, the PHY may need to be powered on or off several
|
|
* times. This function is used to power on the PHY. It relies on the
|
|
* setup done in init(). If init() is not implemented, it must take care
|
|
* of setting up the context (PLLs, ...)
|
|
*
|
|
* Return: 0 if OK, or a negative error code
|
|
*/
|
|
int (*power_on)(struct phy *phy);
|
|
|
|
/**
|
|
* power_off - power off a PHY device
|
|
*
|
|
* @phy: PHY port to be powered off
|
|
*
|
|
* During runtime, the PHY may need to be powered on or off several
|
|
* times. This function is used to power off the PHY. Except if
|
|
* init()/deinit() are not implemented, it must not de-initialize
|
|
* everything.
|
|
*
|
|
* Return: 0 if OK, or a negative error code
|
|
*/
|
|
int (*power_off)(struct phy *phy);
|
|
|
|
/**
|
|
* configure - configure a PHY device
|
|
*
|
|
* @phy: PHY port to be configured
|
|
* @params: PHY Parameters, underlying data is specific to the PHY function
|
|
*
|
|
* During runtime, the PHY may need to be configured for it's main function.
|
|
* This function configures the PHY for it's main function following
|
|
* power_on/off() after beeing initialized.
|
|
*
|
|
* Return: 0 if OK, or a negative error code
|
|
*/
|
|
int (*configure)(struct phy *phy, void *params);
|
|
};
|
|
|
|
/**
|
|
* struct phy_bulk - A handle to (allowing control of) a bulk of phys.
|
|
*
|
|
* Consumers provide storage for the phy bulk. The content of the structure is
|
|
* managed solely by the phy API. A phy bulk struct is initialized
|
|
* by "get"ing the phy bulk struct.
|
|
* The phy bulk struct is passed to all other bulk phy APIs to apply
|
|
* the API to all the phy in the bulk struct.
|
|
*
|
|
* @phys: An array of phy handles.
|
|
* @count: The number of phy handles in the phys array.
|
|
*/
|
|
struct phy_bulk {
|
|
struct phy *phys;
|
|
unsigned int count;
|
|
};
|
|
|
|
#if CONFIG_IS_ENABLED(PHY)
|
|
|
|
/**
|
|
* generic_phy_init() - initialize the PHY port
|
|
*
|
|
* @phy: the PHY port to initialize
|
|
* Return: 0 if OK, or a negative error code
|
|
*/
|
|
int generic_phy_init(struct phy *phy);
|
|
|
|
/**
|
|
* generic_phy_init() - de-initialize the PHY device
|
|
*
|
|
* @phy: PHY port to be de-initialized
|
|
* Return: 0 if OK, or a negative error code
|
|
*/
|
|
int generic_phy_exit(struct phy *phy);
|
|
|
|
/**
|
|
* generic_phy_reset() - resets a PHY device without shutting down
|
|
*
|
|
* @phy: PHY port to be reset
|
|
*Return: 0 if OK, or a negative error code
|
|
*/
|
|
int generic_phy_reset(struct phy *phy);
|
|
|
|
/**
|
|
* generic_phy_power_on() - power on a PHY device
|
|
*
|
|
* @phy: PHY port to be powered on
|
|
* Return: 0 if OK, or a negative error code
|
|
*/
|
|
int generic_phy_power_on(struct phy *phy);
|
|
|
|
/**
|
|
* generic_phy_power_off() - power off a PHY device
|
|
*
|
|
* @phy: PHY port to be powered off
|
|
* Return: 0 if OK, or a negative error code
|
|
*/
|
|
int generic_phy_power_off(struct phy *phy);
|
|
|
|
/**
|
|
* generic_phy_configure() - configure a PHY device
|
|
*
|
|
* @phy: PHY port to be configured
|
|
* @params: PHY Parameters, underlying data is specific to the PHY function
|
|
* Return: 0 if OK, or a negative error code
|
|
*/
|
|
int generic_phy_configure(struct phy *phy, void *params);
|
|
|
|
|
|
/**
|
|
* generic_phy_get_by_index() - Get a PHY device by integer index.
|
|
*
|
|
* @user: the client device
|
|
* @index: The index in the list of available PHYs
|
|
* @phy: A pointer to the PHY port
|
|
*
|
|
* This looks up a PHY device for a client device based on its position in the
|
|
* list of the possible PHYs.
|
|
*
|
|
* example:
|
|
* usb1: usb_otg_ss@xxx {
|
|
* compatible = "xxx";
|
|
* reg = <xxx>;
|
|
* .
|
|
* .
|
|
* phys = <&usb2_phy>, <&usb3_phy>;
|
|
* .
|
|
* .
|
|
* };
|
|
* the USB2 phy can be accessed by passing index '0' and the USB3 phy can
|
|
* be accessed by passing index '1'
|
|
*
|
|
* Return: 0 if OK, or a negative error code
|
|
*/
|
|
int generic_phy_get_by_index(struct udevice *user, int index,
|
|
struct phy *phy);
|
|
|
|
/**
|
|
* generic_phy_get_by_index_nodev() - Get a PHY device by integer index
|
|
* without a device
|
|
*
|
|
* @node: The client ofnode.
|
|
* @index: The index in the list of available PHYs
|
|
* @phy: A pointer to the PHY port
|
|
*
|
|
* This is a version of generic_phy_get_by_index() that does not use a device.
|
|
*
|
|
* This looks up a PHY device for a client device based on its ofnode and on
|
|
* its position in the list of the possible PHYs.
|
|
*
|
|
* example:
|
|
* usb1: usb_otg_ss@xxx {
|
|
* compatible = "xxx";
|
|
* reg = <xxx>;
|
|
* .
|
|
* .
|
|
* phys = <&usb2_phy>, <&usb3_phy>;
|
|
* .
|
|
* .
|
|
* };
|
|
* the USB2 phy can be accessed by passing index '0' and the USB3 phy can
|
|
* be accessed by passing index '1'
|
|
*
|
|
* Return: 0 if OK, or a negative error code
|
|
*/
|
|
int generic_phy_get_by_index_nodev(ofnode node, int index, struct phy *phy);
|
|
|
|
/**
|
|
* generic_phy_get_by_name() - Get a PHY device by its name.
|
|
*
|
|
* @user: the client device
|
|
* @phy_name: The name of the PHY in the list of possible PHYs
|
|
* @phy: A pointer to the PHY port
|
|
*
|
|
* This looks up a PHY device for a client device in the
|
|
* list of the possible PHYs based on its name.
|
|
*
|
|
* example:
|
|
* usb1: usb_otg_ss@xxx {
|
|
* compatible = "xxx";
|
|
* reg = <xxx>;
|
|
* .
|
|
* .
|
|
* phys = <&usb2_phy>, <&usb3_phy>;
|
|
* phy-names = "usb2phy", "usb3phy";
|
|
* .
|
|
* .
|
|
* };
|
|
* the USB3 phy can be accessed using "usb3phy", and USB2 by using "usb2phy"
|
|
*
|
|
* Return: 0 if OK, or a negative error code
|
|
*/
|
|
int generic_phy_get_by_name(struct udevice *user, const char *phy_name,
|
|
struct phy *phy);
|
|
|
|
/**
|
|
* generic_phy_get_bulk - Get all phys of a device.
|
|
*
|
|
* This looks up and gets all phys of the consumer device; each device is
|
|
* assumed to have n phys associated with it somehow, and this function finds
|
|
* and gets all of them in a separate structure.
|
|
*
|
|
* @dev: The consumer device.
|
|
* @bulk A pointer to a phy bulk struct to initialize.
|
|
* Return: 0 if OK, or a negative error code.
|
|
*/
|
|
int generic_phy_get_bulk(struct udevice *dev, struct phy_bulk *bulk);
|
|
|
|
/**
|
|
* generic_phy_init_bulk() - Initialize all phys in a phy bulk struct.
|
|
*
|
|
* @bulk: A phy bulk struct that was previously successfully requested
|
|
* by generic_phy_get_bulk().
|
|
* Return: 0 if OK, or negative error code.
|
|
*/
|
|
int generic_phy_init_bulk(struct phy_bulk *bulk);
|
|
|
|
/**
|
|
* generic_phy_exit_bulk() - de-initialize all phys in a phy bulk struct.
|
|
*
|
|
* @bulk: A phy bulk struct that was previously successfully requested
|
|
* by generic_phy_get_bulk().
|
|
* Return: 0 if OK, or negative error code.
|
|
*/
|
|
int generic_phy_exit_bulk(struct phy_bulk *bulk);
|
|
|
|
/**
|
|
* generic_phy_power_on_bulk() - Power on all phys in a phy bulk struct.
|
|
*
|
|
* @bulk: A phy bulk struct that was previously successfully requested
|
|
* by generic_phy_get_bulk().
|
|
* Return: 0 if OK, or negative error code.
|
|
*/
|
|
int generic_phy_power_on_bulk(struct phy_bulk *bulk);
|
|
|
|
/**
|
|
* generic_phy_power_off_bulk() - Power off all phys in a phy bulk struct.
|
|
*
|
|
* @bulk: A phy bulk struct that was previously successfully requested
|
|
* by generic_phy_get_bulk().
|
|
* Return: 0 if OK, or negative error code.
|
|
*/
|
|
int generic_phy_power_off_bulk(struct phy_bulk *bulk);
|
|
|
|
/**
|
|
* generic_setup_phy() - Get, initialize and power on phy.
|
|
*
|
|
* @dev: The consumer device.
|
|
* @phy: A pointer to the PHY port
|
|
* @index: The index in the list of available PHYs
|
|
*
|
|
* Return: 0 if OK, or negative error code.
|
|
*/
|
|
int generic_setup_phy(struct udevice *dev, struct phy *phy, int index);
|
|
|
|
/**
|
|
* generic_shutdown_phy() - Power off and de-initialize phy.
|
|
*
|
|
* @phy: A pointer to the PHY port.
|
|
*
|
|
* Return: 0 if OK, or negative error code.
|
|
*/
|
|
int generic_shutdown_phy(struct phy *phy);
|
|
|
|
#else /* CONFIG_PHY */
|
|
|
|
static inline int generic_phy_init(struct phy *phy)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int generic_phy_exit(struct phy *phy)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int generic_phy_reset(struct phy *phy)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int generic_phy_power_on(struct phy *phy)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int generic_phy_power_off(struct phy *phy)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int generic_phy_get_by_index(struct udevice *user, int index,
|
|
struct phy *phy)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int generic_phy_get_by_name(struct udevice *user, const char *phy_name,
|
|
struct phy *phy)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int
|
|
generic_phy_get_bulk(struct udevice *dev, struct phy_bulk *bulk)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int generic_phy_init_bulk(struct phy_bulk *bulk)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int generic_phy_exit_bulk(struct phy_bulk *bulk)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int generic_phy_power_on_bulk(struct phy_bulk *bulk)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int generic_phy_power_off_bulk(struct phy_bulk *bulk)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int generic_setup_phy(struct udevice *dev, struct phy *phy, int index)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int generic_shutdown_phy(struct phy *phy)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
#endif /* CONFIG_PHY */
|
|
|
|
/**
|
|
* generic_phy_valid() - check if PHY port is valid
|
|
*
|
|
* @phy: the PHY port to check
|
|
* Return: TRUE if valid, or FALSE
|
|
*/
|
|
static inline bool generic_phy_valid(struct phy *phy)
|
|
{
|
|
return phy && phy->dev;
|
|
}
|
|
|
|
#endif /*__GENERIC_PHY_H */
|