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phy layer: add kernel-doc + DocBook

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Convert function documentation in drivers/net/phy/ to kernel-doc
and add it to DocBook.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Randy Dunlap 2007-03-06 02:41:48 -08:00 committed by Jeff Garzik
parent 56e1393f82
commit b3df0da886
4 changed files with 233 additions and 96 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
Documentation/DocBook/kernel-api.tmpl
View File

@ -236,6 +236,12 @@ X!Ilib/string.c
!Enet/core/dev.c !Enet/core/dev.c
!Enet/ethernet/eth.c !Enet/ethernet/eth.c
!Iinclude/linux/etherdevice.h !Iinclude/linux/etherdevice.h
!Edrivers/net/phy/phy.c
!Idrivers/net/phy/phy.c
!Edrivers/net/phy/phy_device.c
!Idrivers/net/phy/phy_device.c
!Edrivers/net/phy/mdio_bus.c
!Idrivers/net/phy/mdio_bus.c
<!-- FIXME: Removed for now since no structured comments in source <!-- FIXME: Removed for now since no structured comments in source
X!Enet/core/wireless.c X!Enet/core/wireless.c
--> -->

19
drivers/net/phy/mdio_bus.c
View File

@ -35,10 +35,14 @@
#include <asm/irq.h> #include <asm/irq.h>
#include <asm/uaccess.h> #include <asm/uaccess.h>
/* mdiobus_register /**
* mdiobus_register - bring up all the PHYs on a given bus and attach them to bus
* @bus: target mii_bus
* *
* description: Called by a bus driver to bring up all the PHYs * Description: Called by a bus driver to bring up all the PHYs
* on a given bus, and attach them to the bus * on a given bus, and attach them to the bus.
*
* Returns 0 on success or < 0 on error.
*/ */
int mdiobus_register(struct mii_bus *bus) int mdiobus_register(struct mii_bus *bus)
{ {
@ -114,10 +118,13 @@ void mdiobus_unregister(struct mii_bus *bus)
} }
EXPORT_SYMBOL(mdiobus_unregister); EXPORT_SYMBOL(mdiobus_unregister);
/* mdio_bus_match /**
* mdio_bus_match - determine if given PHY driver supports the given PHY device
* @dev: target PHY device
* @drv: given PHY driver
* *
* description: Given a PHY device, and a PHY driver, return 1 if * Description: Given a PHY device, and a PHY driver, return 1 if
* the driver supports the device. Otherwise, return 0 * the driver supports the device. Otherwise, return 0.
*/ */
static int mdio_bus_match(struct device *dev, struct device_driver *drv) static int mdio_bus_match(struct device *dev, struct device_driver *drv)
{ {

188
drivers/net/phy/phy.c
View File

@ -39,7 +39,9 @@
#include <asm/irq.h> #include <asm/irq.h>
#include <asm/uaccess.h> #include <asm/uaccess.h>
/* Convenience function to print out the current phy status /**
* phy_print_status - Convenience function to print out the current phy status
* @phydev: the phy_device struct
*/ */
void phy_print_status(struct phy_device *phydev) void phy_print_status(struct phy_device *phydev)
{ {
@ -55,10 +57,15 @@ void phy_print_status(struct phy_device *phydev)
EXPORT_SYMBOL(phy_print_status); EXPORT_SYMBOL(phy_print_status);
/* Convenience functions for reading/writing a given PHY /**
* register. They MUST NOT be called from interrupt context, * phy_read - Convenience function for reading a given PHY register
* @phydev: the phy_device struct
* @regnum: register number to read
*
* NOTE: MUST NOT be called from interrupt context,
* because the bus read/write functions may wait for an interrupt * because the bus read/write functions may wait for an interrupt
* to conclude the operation. */ * to conclude the operation.
*/
int phy_read(struct phy_device *phydev, u16 regnum) int phy_read(struct phy_device *phydev, u16 regnum)
{ {
int retval; int retval;
@ -72,6 +79,16 @@ int phy_read(struct phy_device *phydev, u16 regnum)
} }
EXPORT_SYMBOL(phy_read); EXPORT_SYMBOL(phy_read);
/**
* phy_write - Convenience function for writing a given PHY register
* @phydev: the phy_device struct
* @regnum: register number to write
* @val: value to write to @regnum
*
* NOTE: MUST NOT be called from interrupt context,
* because the bus read/write functions may wait for an interrupt
* to conclude the operation.
*/
int phy_write(struct phy_device *phydev, u16 regnum, u16 val) int phy_write(struct phy_device *phydev, u16 regnum, u16 val)
{ {
int err; int err;
@ -85,7 +102,15 @@ int phy_write(struct phy_device *phydev, u16 regnum, u16 val)
} }
EXPORT_SYMBOL(phy_write); EXPORT_SYMBOL(phy_write);
/**
* phy_clear_interrupt - Ack the phy device's interrupt
* @phydev: the phy_device struct
*
* If the @phydev driver has an ack_interrupt function, call it to
* ack and clear the phy device's interrupt.
*
* Returns 0 on success on < 0 on error.
*/
int phy_clear_interrupt(struct phy_device *phydev) int phy_clear_interrupt(struct phy_device *phydev)
{ {
int err = 0; int err = 0;
@ -96,7 +121,13 @@ int phy_clear_interrupt(struct phy_device *phydev)
return err; return err;
} }
/**
* phy_config_interrupt - configure the PHY device for the requested interrupts
* @phydev: the phy_device struct
* @interrupts: interrupt flags to configure for this @phydev
*
* Returns 0 on success on < 0 on error.
*/
int phy_config_interrupt(struct phy_device *phydev, u32 interrupts) int phy_config_interrupt(struct phy_device *phydev, u32 interrupts)
{ {
int err = 0; int err = 0;
@ -109,9 +140,11 @@ int phy_config_interrupt(struct phy_device *phydev, u32 interrupts)
} }
/* phy_aneg_done /**
* phy_aneg_done - return auto-negotiation status
* @phydev: target phy_device struct
* *
* description: Reads the status register and returns 0 either if * Description: Reads the status register and returns 0 either if
* auto-negotiation is incomplete, or if there was an error. * auto-negotiation is incomplete, or if there was an error.
* Returns BMSR_ANEGCOMPLETE if auto-negotiation is done. * Returns BMSR_ANEGCOMPLETE if auto-negotiation is done.
*/ */
@ -173,9 +206,12 @@ static const struct phy_setting settings[] = {
#define MAX_NUM_SETTINGS (sizeof(settings)/sizeof(struct phy_setting)) #define MAX_NUM_SETTINGS (sizeof(settings)/sizeof(struct phy_setting))
/* phy_find_setting /**
* phy_find_setting - find a PHY settings array entry that matches speed & duplex
* @speed: speed to match
* @duplex: duplex to match
* *
* description: Searches the settings array for the setting which * Description: Searches the settings array for the setting which
* matches the desired speed and duplex, and returns the index * matches the desired speed and duplex, and returns the index
* of that setting. Returns the index of the last setting if * of that setting. Returns the index of the last setting if
* none of the others match. * none of the others match.
@ -192,11 +228,12 @@ static inline int phy_find_setting(int speed, int duplex)
return idx < MAX_NUM_SETTINGS ? idx : MAX_NUM_SETTINGS - 1; return idx < MAX_NUM_SETTINGS ? idx : MAX_NUM_SETTINGS - 1;
} }
/* phy_find_valid /**
* idx: The first index in settings[] to search * phy_find_valid - find a PHY setting that matches the requested features mask
* features: A mask of the valid settings * @idx: The first index in settings[] to search
* @features: A mask of the valid settings
* *
* description: Returns the index of the first valid setting less * Description: Returns the index of the first valid setting less
* than or equal to the one pointed to by idx, as determined by * than or equal to the one pointed to by idx, as determined by
* the mask in features. Returns the index of the last setting * the mask in features. Returns the index of the last setting
* if nothing else matches. * if nothing else matches.
@ -209,11 +246,13 @@ static inline int phy_find_valid(int idx, u32 features)
return idx < MAX_NUM_SETTINGS ? idx : MAX_NUM_SETTINGS - 1; return idx < MAX_NUM_SETTINGS ? idx : MAX_NUM_SETTINGS - 1;
} }
/* phy_sanitize_settings /**
* phy_sanitize_settings - make sure the PHY is set to supported speed and duplex
* @phydev: the target phy_device struct
* *
* description: Make sure the PHY is set to supported speeds and * Description: Make sure the PHY is set to supported speeds and
* duplexes. Drop down by one in this order: 1000/FULL, * duplexes. Drop down by one in this order: 1000/FULL,
* 1000/HALF, 100/FULL, 100/HALF, 10/FULL, 10/HALF * 1000/HALF, 100/FULL, 100/HALF, 10/FULL, 10/HALF.
*/ */
void phy_sanitize_settings(struct phy_device *phydev) void phy_sanitize_settings(struct phy_device *phydev)
{ {
@ -232,16 +271,17 @@ void phy_sanitize_settings(struct phy_device *phydev)
} }
EXPORT_SYMBOL(phy_sanitize_settings); EXPORT_SYMBOL(phy_sanitize_settings);
/* phy_ethtool_sset: /**
* A generic ethtool sset function. Handles all the details * phy_ethtool_sset - generic ethtool sset function, handles all the details
* @phydev: target phy_device struct
* @cmd: ethtool_cmd
* *
* A few notes about parameter checking: * A few notes about parameter checking:
* - We don't set port or transceiver, so we don't care what they * - We don't set port or transceiver, so we don't care what they
* were set to. * were set to.
* - phy_start_aneg() will make sure forced settings are sane, and * - phy_start_aneg() will make sure forced settings are sane, and
* choose the next best ones from the ones selected, so we don't * choose the next best ones from the ones selected, so we don't
* care if ethtool tries to give us bad values * care if ethtool tries to give us bad values.
*
*/ */
int phy_ethtool_sset(struct phy_device *phydev, struct ethtool_cmd *cmd) int phy_ethtool_sset(struct phy_device *phydev, struct ethtool_cmd *cmd)
{ {
@ -304,9 +344,15 @@ int phy_ethtool_gset(struct phy_device *phydev, struct ethtool_cmd *cmd)
} }
EXPORT_SYMBOL(phy_ethtool_gset); EXPORT_SYMBOL(phy_ethtool_gset);
/* Note that this function is currently incompatible with the /**
* phy_mii_ioctl - generic PHY MII ioctl interface
* @phydev: the phy_device struct
* @mii_data: MII ioctl data
* @cmd: ioctl cmd to execute
*
* Note that this function is currently incompatible with the
* PHYCONTROL layer. It changes registers without regard to * PHYCONTROL layer. It changes registers without regard to
* current state. Use at own risk * current state. Use at own risk.
*/ */
int phy_mii_ioctl(struct phy_device *phydev, int phy_mii_ioctl(struct phy_device *phydev,
struct mii_ioctl_data *mii_data, int cmd) struct mii_ioctl_data *mii_data, int cmd)
@ -358,13 +404,14 @@ int phy_mii_ioctl(struct phy_device *phydev,
return 0; return 0;
} }
/* phy_start_aneg /**
* phy_start_aneg - start auto-negotiation for this PHY device
* @phydev: the phy_device struct
* *
* description: Sanitizes the settings (if we're not * Description: Sanitizes the settings (if we're not autonegotiating
* autonegotiating them), and then calls the driver's * them), and then calls the driver's config_aneg function.
* config_aneg function. If the PHYCONTROL Layer is operating, * If the PHYCONTROL Layer is operating, we change the state to
* we change the state to reflect the beginning of * reflect the beginning of Auto-negotiation or forcing.
* Auto-negotiation or forcing.
*/ */
int phy_start_aneg(struct phy_device *phydev) int phy_start_aneg(struct phy_device *phydev)
{ {
@ -400,15 +447,19 @@ EXPORT_SYMBOL(phy_start_aneg);
static void phy_change(struct work_struct *work); static void phy_change(struct work_struct *work);
static void phy_timer(unsigned long data); static void phy_timer(unsigned long data);
/* phy_start_machine: /**
* phy_start_machine - start PHY state machine tracking
* @phydev: the phy_device struct
* @handler: callback function for state change notifications
* *
* description: The PHY infrastructure can run a state machine * Description: The PHY infrastructure can run a state machine
* which tracks whether the PHY is starting up, negotiating, * which tracks whether the PHY is starting up, negotiating,
* etc. This function starts the timer which tracks the state * etc. This function starts the timer which tracks the state
* of the PHY. If you want to be notified when the state * of the PHY. If you want to be notified when the state changes,
* changes, pass in the callback, otherwise, pass NULL. If you * pass in the callback @handler, otherwise, pass NULL. If you
* want to maintain your own state machine, do not call this * want to maintain your own state machine, do not call this
* function. */ * function.
*/
void phy_start_machine(struct phy_device *phydev, void phy_start_machine(struct phy_device *phydev,
void (*handler)(struct net_device *)) void (*handler)(struct net_device *))
{ {
@ -420,9 +471,11 @@ void phy_start_machine(struct phy_device *phydev,
mod_timer(&phydev->phy_timer, jiffies + HZ); mod_timer(&phydev->phy_timer, jiffies + HZ);
} }
/* phy_stop_machine /**
* phy_stop_machine - stop the PHY state machine tracking
* @phydev: target phy_device struct
* *
* description: Stops the state machine timer, sets the state to UP * Description: Stops the state machine timer, sets the state to UP
* (unless it wasn't up yet). This function must be called BEFORE * (unless it wasn't up yet). This function must be called BEFORE
* phy_detach. * phy_detach.
*/ */
@ -438,12 +491,14 @@ void phy_stop_machine(struct phy_device *phydev)
phydev->adjust_state = NULL; phydev->adjust_state = NULL;
} }
/* phy_force_reduction /**
* phy_force_reduction - reduce PHY speed/duplex settings by one step
* @phydev: target phy_device struct
* *
* description: Reduces the speed/duplex settings by * Description: Reduces the speed/duplex settings by one notch,
* one notch. The order is so: * in this order--
* 1000/FULL, 1000/HALF, 100/FULL, 100/HALF, * 1000/FULL, 1000/HALF, 100/FULL, 100/HALF, 10/FULL, 10/HALF.
* 10/FULL, 10/HALF. The function bottoms out at 10/HALF. * The function bottoms out at 10/HALF.
*/ */
static void phy_force_reduction(struct phy_device *phydev) static void phy_force_reduction(struct phy_device *phydev)
{ {
@ -464,7 +519,9 @@ static void phy_force_reduction(struct phy_device *phydev)
} }
/* phy_error: /**
* phy_error - enter HALTED state for this PHY device
* @phydev: target phy_device struct
* *
* Moves the PHY to the HALTED state in response to a read * Moves the PHY to the HALTED state in response to a read
* or write error, and tells the controller the link is down. * or write error, and tells the controller the link is down.
@ -478,9 +535,12 @@ void phy_error(struct phy_device *phydev)
spin_unlock(&phydev->lock); spin_unlock(&phydev->lock);
} }
/* phy_interrupt /**
* phy_interrupt - PHY interrupt handler
* @irq: interrupt line
* @phy_dat: phy_device pointer
* *
* description: When a PHY interrupt occurs, the handler disables * Description: When a PHY interrupt occurs, the handler disables
* interrupts, and schedules a work task to clear the interrupt. * interrupts, and schedules a work task to clear the interrupt.
*/ */
static irqreturn_t phy_interrupt(int irq, void *phy_dat) static irqreturn_t phy_interrupt(int irq, void *phy_dat)
@ -501,7 +561,10 @@ static irqreturn_t phy_interrupt(int irq, void *phy_dat)
return IRQ_HANDLED; return IRQ_HANDLED;
} }
/* Enable the interrupts from the PHY side */ /**
* phy_enable_interrupts - Enable the interrupts from the PHY side
* @phydev: target phy_device struct
*/
int phy_enable_interrupts(struct phy_device *phydev) int phy_enable_interrupts(struct phy_device *phydev)
{ {
int err; int err;
@ -517,7 +580,10 @@ int phy_enable_interrupts(struct phy_device *phydev)
} }
EXPORT_SYMBOL(phy_enable_interrupts); EXPORT_SYMBOL(phy_enable_interrupts);
/* Disable the PHY interrupts from the PHY side */ /**
* phy_disable_interrupts - Disable the PHY interrupts from the PHY side
* @phydev: target phy_device struct
*/
int phy_disable_interrupts(struct phy_device *phydev) int phy_disable_interrupts(struct phy_device *phydev)
{ {
int err; int err;
@ -543,13 +609,15 @@ phy_err:
} }
EXPORT_SYMBOL(phy_disable_interrupts); EXPORT_SYMBOL(phy_disable_interrupts);
/* phy_start_interrupts /**
* phy_start_interrupts - request and enable interrupts for a PHY device
* @phydev: target phy_device struct
* *
* description: Request the interrupt for the given PHY. If * Description: Request the interrupt for the given PHY.
* this fails, then we set irq to PHY_POLL. * If this fails, then we set irq to PHY_POLL.
* Otherwise, we enable the interrupts in the PHY. * Otherwise, we enable the interrupts in the PHY.
* Returns 0 on success.
* This should only be called with a valid IRQ number. * This should only be called with a valid IRQ number.
* Returns 0 on success or < 0 on error.
*/ */
int phy_start_interrupts(struct phy_device *phydev) int phy_start_interrupts(struct phy_device *phydev)
{ {
@ -574,6 +642,10 @@ int phy_start_interrupts(struct phy_device *phydev)
} }
EXPORT_SYMBOL(phy_start_interrupts); EXPORT_SYMBOL(phy_start_interrupts);
/**
* phy_stop_interrupts - disable interrupts from a PHY device
* @phydev: target phy_device struct
*/
int phy_stop_interrupts(struct phy_device *phydev) int phy_stop_interrupts(struct phy_device *phydev)
{ {
int err; int err;
@ -596,7 +668,10 @@ int phy_stop_interrupts(struct phy_device *phydev)
EXPORT_SYMBOL(phy_stop_interrupts); EXPORT_SYMBOL(phy_stop_interrupts);
/* Scheduled by the phy_interrupt/timer to handle PHY changes */ /**
* phy_change - Scheduled by the phy_interrupt/timer to handle PHY changes
* @work: work_struct that describes the work to be done
*/
static void phy_change(struct work_struct *work) static void phy_change(struct work_struct *work)
{ {
int err; int err;
@ -630,7 +705,10 @@ phy_err:
phy_error(phydev); phy_error(phydev);
} }
/* Bring down the PHY link, and stop checking the status. */ /**
* phy_stop - Bring down the PHY link, and stop checking the status
* @phydev: target phy_device struct
*/
void phy_stop(struct phy_device *phydev) void phy_stop(struct phy_device *phydev)
{ {
spin_lock(&phydev->lock); spin_lock(&phydev->lock);
@ -659,9 +737,11 @@ out_unlock:
} }
/* phy_start /**
* phy_start - start or restart a PHY device
* @phydev: target phy_device struct
* *
* description: Indicates the attached device's readiness to * Description: Indicates the attached device's readiness to
* handle PHY-related work. Used during startup to start the * handle PHY-related work. Used during startup to start the
* PHY, and after a call to phy_stop() to resume operation. * PHY, and after a call to phy_stop() to resume operation.
* Also used to indicate the MDIO bus has cleared an error * Also used to indicate the MDIO bus has cleared an error

116
drivers/net/phy/phy_device.c
View File

@ -74,11 +74,13 @@ struct phy_device* phy_device_create(struct mii_bus *bus, int addr, int phy_id)
} }
EXPORT_SYMBOL(phy_device_create); EXPORT_SYMBOL(phy_device_create);
/* get_phy_device /**
* get_phy_device - reads the specified PHY device and returns its @phy_device struct
* @bus: the target MII bus
* @addr: PHY address on the MII bus
* *
* description: Reads the ID registers of the PHY at addr on the * Description: Reads the ID registers of the PHY at @addr on the
* bus, then allocates and returns the phy_device to * @bus, then allocates and returns the phy_device to represent it.
* represent it.
*/ */
struct phy_device * get_phy_device(struct mii_bus *bus, int addr) struct phy_device * get_phy_device(struct mii_bus *bus, int addr)
{ {
@ -112,23 +114,33 @@ struct phy_device * get_phy_device(struct mii_bus *bus, int addr)
return dev; return dev;
} }
/* phy_prepare_link: /**
* phy_prepare_link - prepares the PHY layer to monitor link status
* @phydev: target phy_device struct
* @handler: callback function for link status change notifications
* *
* description: Tells the PHY infrastructure to handle the * Description: Tells the PHY infrastructure to handle the
* gory details on monitoring link status (whether through * gory details on monitoring link status (whether through
* polling or an interrupt), and to call back to the * polling or an interrupt), and to call back to the
* connected device driver when the link status changes. * connected device driver when the link status changes.
* If you want to monitor your own link state, don't call * If you want to monitor your own link state, don't call
* this function */ * this function.
*/
void phy_prepare_link(struct phy_device *phydev, void phy_prepare_link(struct phy_device *phydev,
void (*handler)(struct net_device *)) void (*handler)(struct net_device *))
{ {
phydev->adjust_link = handler; phydev->adjust_link = handler;
} }
/* phy_connect: /**
* phy_connect - connect an ethernet device to a PHY device
* @dev: the network device to connect
* @phy_id: the PHY device to connect
* @handler: callback function for state change notifications
* @flags: PHY device's dev_flags
* @interface: PHY device's interface
* *
* description: Convenience function for connecting ethernet * Description: Convenience function for connecting ethernet
* devices to PHY devices. The default behavior is for * devices to PHY devices. The default behavior is for
* the PHY infrastructure to handle everything, and only notify * the PHY infrastructure to handle everything, and only notify
* the connected driver when the link status changes. If you * the connected driver when the link status changes. If you
@ -158,6 +170,10 @@ struct phy_device * phy_connect(struct net_device *dev, const char *phy_id,
} }
EXPORT_SYMBOL(phy_connect); EXPORT_SYMBOL(phy_connect);
/**
* phy_disconnect - disable interrupts, stop state machine, and detach a PHY device
* @phydev: target phy_device struct
*/
void phy_disconnect(struct phy_device *phydev) void phy_disconnect(struct phy_device *phydev)
{ {
if (phydev->irq > 0) if (phydev->irq > 0)
@ -171,21 +187,25 @@ void phy_disconnect(struct phy_device *phydev)
} }
EXPORT_SYMBOL(phy_disconnect); EXPORT_SYMBOL(phy_disconnect);
/* phy_attach:
*
* description: Called by drivers to attach to a particular PHY
* device. The phy_device is found, and properly hooked up
* to the phy_driver. If no driver is attached, then the
* genphy_driver is used. The phy_device is given a ptr to
* the attaching device, and given a callback for link status
* change. The phy_device is returned to the attaching
* driver.
*/
static int phy_compare_id(struct device *dev, void *data) static int phy_compare_id(struct device *dev, void *data)
{ {
return strcmp((char *)data, dev->bus_id) ? 0 : 1; return strcmp((char *)data, dev->bus_id) ? 0 : 1;
} }
/**
* phy_attach - attach a network device to a particular PHY device
* @dev: network device to attach
* @phy_id: PHY device to attach
* @flags: PHY device's dev_flags
* @interface: PHY device's interface
*
* Description: Called by drivers to attach to a particular PHY
* device. The phy_device is found, and properly hooked up
* to the phy_driver. If no driver is attached, then the
* genphy_driver is used. The phy_device is given a ptr to
* the attaching device, and given a callback for link status
* change. The phy_device is returned to the attaching driver.
*/
struct phy_device *phy_attach(struct net_device *dev, struct phy_device *phy_attach(struct net_device *dev,
const char *phy_id, u32 flags, phy_interface_t interface) const char *phy_id, u32 flags, phy_interface_t interface)
{ {
@ -246,6 +266,10 @@ struct phy_device *phy_attach(struct net_device *dev,
} }
EXPORT_SYMBOL(phy_attach); EXPORT_SYMBOL(phy_attach);
/**
* phy_detach - detach a PHY device from its network device
* @phydev: target phy_device struct
*/
void phy_detach(struct phy_device *phydev) void phy_detach(struct phy_device *phydev)
{ {
phydev->attached_dev = NULL; phydev->attached_dev = NULL;
@ -262,11 +286,13 @@ EXPORT_SYMBOL(phy_detach);
/* Generic PHY support and helper functions */ /* Generic PHY support and helper functions */
/* genphy_config_advert /**
* genphy_config_advert - sanitize and advertise auto-negotation parameters
* @phydev: target phy_device struct
* *
* description: Writes MII_ADVERTISE with the appropriate values, * Description: Writes MII_ADVERTISE with the appropriate values,
* after sanitizing the values to make sure we only advertise * after sanitizing the values to make sure we only advertise
* what is supported * what is supported.
*/ */
int genphy_config_advert(struct phy_device *phydev) int genphy_config_advert(struct phy_device *phydev)
{ {
@ -328,11 +354,14 @@ int genphy_config_advert(struct phy_device *phydev)
} }
EXPORT_SYMBOL(genphy_config_advert); EXPORT_SYMBOL(genphy_config_advert);
/* genphy_setup_forced /**
* genphy_setup_forced - configures/forces speed/duplex from @phydev
* @phydev: target phy_device struct
* *
* description: Configures MII_BMCR to force speed/duplex * Description: Configures MII_BMCR to force speed/duplex
* to the values in phydev. Assumes that the values are valid. * to the values in phydev. Assumes that the values are valid.
* Please see phy_sanitize_settings() */ * Please see phy_sanitize_settings().
*/
int genphy_setup_forced(struct phy_device *phydev) int genphy_setup_forced(struct phy_device *phydev)
{ {
int ctl = BMCR_RESET; int ctl = BMCR_RESET;
@ -361,7 +390,10 @@ int genphy_setup_forced(struct phy_device *phydev)
} }
/* Enable and Restart Autonegotiation */ /**
* genphy_restart_aneg - Enable and Restart Autonegotiation
* @phydev: target phy_device struct
*/
int genphy_restart_aneg(struct phy_device *phydev) int genphy_restart_aneg(struct phy_device *phydev)
{ {
int ctl; int ctl;
@ -382,11 +414,13 @@ int genphy_restart_aneg(struct phy_device *phydev)
} }
/* genphy_config_aneg /**
* genphy_config_aneg - restart auto-negotiation or write BMCR
* @phydev: target phy_device struct
* *
* description: If auto-negotiation is enabled, we configure the * Description: If auto-negotiation is enabled, we configure the
* advertising, and then restart auto-negotiation. If it is not * advertising, and then restart auto-negotiation. If it is not
* enabled, then we write the BMCR * enabled, then we write the BMCR.
*/ */
int genphy_config_aneg(struct phy_device *phydev) int genphy_config_aneg(struct phy_device *phydev)
{ {
@ -406,11 +440,13 @@ int genphy_config_aneg(struct phy_device *phydev)
} }
EXPORT_SYMBOL(genphy_config_aneg); EXPORT_SYMBOL(genphy_config_aneg);
/* genphy_update_link /**
* genphy_update_link - update link status in @phydev
* @phydev: target phy_device struct
* *
* description: Update the value in phydev->link to reflect the * Description: Update the value in phydev->link to reflect the
* current link value. In order to do this, we need to read * current link value. In order to do this, we need to read
* the status register twice, keeping the second value * the status register twice, keeping the second value.
*/ */
int genphy_update_link(struct phy_device *phydev) int genphy_update_link(struct phy_device *phydev)
{ {
@ -437,9 +473,11 @@ int genphy_update_link(struct phy_device *phydev)
} }
EXPORT_SYMBOL(genphy_update_link); EXPORT_SYMBOL(genphy_update_link);
/* genphy_read_status /**
* genphy_read_status - check the link status and update current link state
* @phydev: target phy_device struct
* *
* description: Check the link, then figure out the current state * Description: Check the link, then figure out the current state
* by comparing what we advertise with what the link partner * by comparing what we advertise with what the link partner
* advertises. Start by checking the gigabit possibilities, * advertises. Start by checking the gigabit possibilities,
* then move on to 10/100. * then move on to 10/100.
@ -579,9 +617,11 @@ static int genphy_config_init(struct phy_device *phydev)
} }
/* phy_probe /**
* phy_probe - probe and init a PHY device
* @dev: device to probe and init
* *
* description: Take care of setting up the phy_device structure, * Description: Take care of setting up the phy_device structure,
* set the state to READY (the driver's init function should * set the state to READY (the driver's init function should
* set it to STARTING if needed). * set it to STARTING if needed).
*/ */
@ -643,6 +683,10 @@ static int phy_remove(struct device *dev)
return 0; return 0;
} }
/**
* phy_driver_register - register a phy_driver with the PHY layer
* @new_driver: new phy_driver to register
*/
int phy_driver_register(struct phy_driver *new_driver) int phy_driver_register(struct phy_driver *new_driver)
{ {
int retval; int retval;