2 * drivers/net/phy/phy_device.c
4 * Framework for finding and configuring PHYs.
5 * Also contains generic PHY driver
9 * Copyright (c) 2004 Freescale Semiconductor, Inc.
11 * This program is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by the
13 * Free Software Foundation; either version 2 of the License, or (at your
14 * option) any later version.
17 #include <linux/kernel.h>
18 #include <linux/string.h>
19 #include <linux/errno.h>
20 #include <linux/unistd.h>
21 #include <linux/slab.h>
22 #include <linux/interrupt.h>
23 #include <linux/init.h>
24 #include <linux/delay.h>
25 #include <linux/netdevice.h>
26 #include <linux/etherdevice.h>
27 #include <linux/skbuff.h>
29 #include <linux/module.h>
30 #include <linux/mii.h>
31 #include <linux/ethtool.h>
32 #include <linux/phy.h>
36 #include <asm/uaccess.h>
38 MODULE_DESCRIPTION("PHY library");
39 MODULE_AUTHOR("Andy Fleming");
40 MODULE_LICENSE("GPL");
42 static struct phy_driver genphy_driver
;
43 extern int mdio_bus_init(void);
44 extern void mdio_bus_exit(void);
46 void phy_device_free(struct phy_device
*phydev
)
51 static void phy_device_release(struct device
*dev
)
53 phy_device_free(to_phy_device(dev
));
56 static LIST_HEAD(phy_fixup_list
);
57 static DEFINE_MUTEX(phy_fixup_lock
);
60 * Creates a new phy_fixup and adds it to the list
61 * @bus_id: A string which matches phydev->dev.bus_id (or PHY_ANY_ID)
62 * @phy_uid: Used to match against phydev->phy_id (the UID of the PHY)
63 * It can also be PHY_ANY_UID
64 * @phy_uid_mask: Applied to phydev->phy_id and fixup->phy_uid before
66 * @run: The actual code to be run when a matching PHY is found
68 int phy_register_fixup(const char *bus_id
, u32 phy_uid
, u32 phy_uid_mask
,
69 int (*run
)(struct phy_device
*))
71 struct phy_fixup
*fixup
;
73 fixup
= kzalloc(sizeof(struct phy_fixup
), GFP_KERNEL
);
77 strlcpy(fixup
->bus_id
, bus_id
, sizeof(fixup
->bus_id
));
78 fixup
->phy_uid
= phy_uid
;
79 fixup
->phy_uid_mask
= phy_uid_mask
;
82 mutex_lock(&phy_fixup_lock
);
83 list_add_tail(&fixup
->list
, &phy_fixup_list
);
84 mutex_unlock(&phy_fixup_lock
);
88 EXPORT_SYMBOL(phy_register_fixup
);
90 /* Registers a fixup to be run on any PHY with the UID in phy_uid */
91 int phy_register_fixup_for_uid(u32 phy_uid
, u32 phy_uid_mask
,
92 int (*run
)(struct phy_device
*))
94 return phy_register_fixup(PHY_ANY_ID
, phy_uid
, phy_uid_mask
, run
);
96 EXPORT_SYMBOL(phy_register_fixup_for_uid
);
98 /* Registers a fixup to be run on the PHY with id string bus_id */
99 int phy_register_fixup_for_id(const char *bus_id
,
100 int (*run
)(struct phy_device
*))
102 return phy_register_fixup(bus_id
, PHY_ANY_UID
, 0xffffffff, run
);
104 EXPORT_SYMBOL(phy_register_fixup_for_id
);
107 * Returns 1 if fixup matches phydev in bus_id and phy_uid.
108 * Fixups can be set to match any in one or more fields.
110 static int phy_needs_fixup(struct phy_device
*phydev
, struct phy_fixup
*fixup
)
112 if (strcmp(fixup
->bus_id
, dev_name(&phydev
->dev
)) != 0)
113 if (strcmp(fixup
->bus_id
, PHY_ANY_ID
) != 0)
116 if ((fixup
->phy_uid
& fixup
->phy_uid_mask
) !=
117 (phydev
->phy_id
& fixup
->phy_uid_mask
))
118 if (fixup
->phy_uid
!= PHY_ANY_UID
)
124 /* Runs any matching fixups for this phydev */
125 int phy_scan_fixups(struct phy_device
*phydev
)
127 struct phy_fixup
*fixup
;
129 mutex_lock(&phy_fixup_lock
);
130 list_for_each_entry(fixup
, &phy_fixup_list
, list
) {
131 if (phy_needs_fixup(phydev
, fixup
)) {
134 err
= fixup
->run(phydev
);
140 mutex_unlock(&phy_fixup_lock
);
144 EXPORT_SYMBOL(phy_scan_fixups
);
146 struct phy_device
* phy_device_create(struct mii_bus
*bus
, int addr
, int phy_id
)
148 struct phy_device
*dev
;
149 /* We allocate the device, and initialize the
151 dev
= kzalloc(sizeof(*dev
), GFP_KERNEL
);
154 return (struct phy_device
*) PTR_ERR((void*)-ENOMEM
);
156 dev
->dev
.release
= phy_device_release
;
160 dev
->pause
= dev
->asym_pause
= 0;
162 dev
->interface
= PHY_INTERFACE_MODE_GMII
;
164 dev
->autoneg
= AUTONEG_ENABLE
;
167 dev
->phy_id
= phy_id
;
170 dev
->state
= PHY_DOWN
;
172 mutex_init(&dev
->lock
);
176 EXPORT_SYMBOL(phy_device_create
);
179 * get_phy_id - reads the specified addr for its ID.
180 * @bus: the target MII bus
181 * @addr: PHY address on the MII bus
182 * @phy_id: where to store the ID retrieved.
184 * Description: Reads the ID registers of the PHY at @addr on the
185 * @bus, stores it in @phy_id and returns zero on success.
187 int get_phy_id(struct mii_bus
*bus
, int addr
, u32
*phy_id
)
191 /* Grab the bits from PHYIR1, and put them
192 * in the upper half */
193 phy_reg
= bus
->read(bus
, addr
, MII_PHYSID1
);
198 *phy_id
= (phy_reg
& 0xffff) << 16;
200 /* Grab the bits from PHYIR2, and put them in the lower half */
201 phy_reg
= bus
->read(bus
, addr
, MII_PHYSID2
);
206 *phy_id
|= (phy_reg
& 0xffff);
210 EXPORT_SYMBOL(get_phy_id
);
213 * get_phy_device - reads the specified PHY device and returns its @phy_device struct
214 * @bus: the target MII bus
215 * @addr: PHY address on the MII bus
217 * Description: Reads the ID registers of the PHY at @addr on the
218 * @bus, then allocates and returns the phy_device to represent it.
220 struct phy_device
* get_phy_device(struct mii_bus
*bus
, int addr
)
222 struct phy_device
*dev
= NULL
;
226 r
= get_phy_id(bus
, addr
, &phy_id
);
230 /* If the phy_id is mostly Fs, there is no device there */
231 if ((phy_id
& 0x1fffffff) == 0x1fffffff)
235 * Broken hardware is sometimes missing the pull down resistor on the
236 * MDIO line, which results in reads to non-existent devices returning
237 * 0 rather than 0xffff. Catch this here and treat 0 as a non-existent
243 dev
= phy_device_create(bus
, addr
, phy_id
);
249 * phy_prepare_link - prepares the PHY layer to monitor link status
250 * @phydev: target phy_device struct
251 * @handler: callback function for link status change notifications
253 * Description: Tells the PHY infrastructure to handle the
254 * gory details on monitoring link status (whether through
255 * polling or an interrupt), and to call back to the
256 * connected device driver when the link status changes.
257 * If you want to monitor your own link state, don't call
260 void phy_prepare_link(struct phy_device
*phydev
,
261 void (*handler
)(struct net_device
*))
263 phydev
->adjust_link
= handler
;
267 * phy_connect - connect an ethernet device to a PHY device
268 * @dev: the network device to connect
269 * @bus_id: the id string of the PHY device to connect
270 * @handler: callback function for state change notifications
271 * @flags: PHY device's dev_flags
272 * @interface: PHY device's interface
274 * Description: Convenience function for connecting ethernet
275 * devices to PHY devices. The default behavior is for
276 * the PHY infrastructure to handle everything, and only notify
277 * the connected driver when the link status changes. If you
278 * don't want, or can't use the provided functionality, you may
279 * choose to call only the subset of functions which provide
280 * the desired functionality.
282 struct phy_device
* phy_connect(struct net_device
*dev
, const char *bus_id
,
283 void (*handler
)(struct net_device
*), u32 flags
,
284 phy_interface_t interface
)
286 struct phy_device
*phydev
;
288 phydev
= phy_attach(dev
, bus_id
, flags
, interface
);
293 phy_prepare_link(phydev
, handler
);
295 phy_start_machine(phydev
, NULL
);
298 phy_start_interrupts(phydev
);
302 EXPORT_SYMBOL(phy_connect
);
305 * phy_disconnect - disable interrupts, stop state machine, and detach a PHY device
306 * @phydev: target phy_device struct
308 void phy_disconnect(struct phy_device
*phydev
)
311 phy_stop_interrupts(phydev
);
313 phy_stop_machine(phydev
);
315 phydev
->adjust_link
= NULL
;
319 EXPORT_SYMBOL(phy_disconnect
);
322 * phy_attach - attach a network device to a particular PHY device
323 * @dev: network device to attach
324 * @bus_id: PHY device to attach
325 * @flags: PHY device's dev_flags
326 * @interface: PHY device's interface
328 * Description: Called by drivers to attach to a particular PHY
329 * device. The phy_device is found, and properly hooked up
330 * to the phy_driver. If no driver is attached, then the
331 * genphy_driver is used. The phy_device is given a ptr to
332 * the attaching device, and given a callback for link status
333 * change. The phy_device is returned to the attaching driver.
335 struct phy_device
*phy_attach(struct net_device
*dev
,
336 const char *bus_id
, u32 flags
, phy_interface_t interface
)
338 struct bus_type
*bus
= &mdio_bus_type
;
339 struct phy_device
*phydev
;
342 /* Search the list of PHY devices on the mdio bus for the
343 * PHY with the requested name */
344 d
= bus_find_device_by_name(bus
, NULL
, bus_id
);
346 phydev
= to_phy_device(d
);
348 printk(KERN_ERR
"%s not found\n", bus_id
);
349 return ERR_PTR(-ENODEV
);
352 /* Assume that if there is no driver, that it doesn't
353 * exist, and we should use the genphy driver. */
354 if (NULL
== d
->driver
) {
356 d
->driver
= &genphy_driver
.driver
;
358 err
= d
->driver
->probe(d
);
360 err
= device_bind_driver(d
);
366 if (phydev
->attached_dev
) {
367 printk(KERN_ERR
"%s: %s already attached\n",
369 return ERR_PTR(-EBUSY
);
372 phydev
->attached_dev
= dev
;
374 phydev
->dev_flags
= flags
;
376 phydev
->interface
= interface
;
378 /* Do initial configuration here, now that
379 * we have certain key parameters
380 * (dev_flags and interface) */
381 if (phydev
->drv
->config_init
) {
384 err
= phy_scan_fixups(phydev
);
389 err
= phydev
->drv
->config_init(phydev
);
397 EXPORT_SYMBOL(phy_attach
);
400 * phy_detach - detach a PHY device from its network device
401 * @phydev: target phy_device struct
403 void phy_detach(struct phy_device
*phydev
)
405 phydev
->attached_dev
= NULL
;
407 /* If the device had no specific driver before (i.e. - it
408 * was using the generic driver), we unbind the device
409 * from the generic driver so that there's a chance a
410 * real driver could be loaded */
411 if (phydev
->dev
.driver
== &genphy_driver
.driver
)
412 device_release_driver(&phydev
->dev
);
414 EXPORT_SYMBOL(phy_detach
);
417 /* Generic PHY support and helper functions */
420 * genphy_config_advert - sanitize and advertise auto-negotation parameters
421 * @phydev: target phy_device struct
423 * Description: Writes MII_ADVERTISE with the appropriate values,
424 * after sanitizing the values to make sure we only advertise
425 * what is supported. Returns < 0 on error, 0 if the PHY's advertisement
426 * hasn't changed, and > 0 if it has changed.
428 int genphy_config_advert(struct phy_device
*phydev
)
432 int err
, changed
= 0;
434 /* Only allow advertising what
435 * this PHY supports */
436 phydev
->advertising
&= phydev
->supported
;
437 advertise
= phydev
->advertising
;
439 /* Setup standard advertisement */
440 oldadv
= adv
= phy_read(phydev
, MII_ADVERTISE
);
445 adv
&= ~(ADVERTISE_ALL
| ADVERTISE_100BASE4
| ADVERTISE_PAUSE_CAP
|
446 ADVERTISE_PAUSE_ASYM
);
447 if (advertise
& ADVERTISED_10baseT_Half
)
448 adv
|= ADVERTISE_10HALF
;
449 if (advertise
& ADVERTISED_10baseT_Full
)
450 adv
|= ADVERTISE_10FULL
;
451 if (advertise
& ADVERTISED_100baseT_Half
)
452 adv
|= ADVERTISE_100HALF
;
453 if (advertise
& ADVERTISED_100baseT_Full
)
454 adv
|= ADVERTISE_100FULL
;
455 if (advertise
& ADVERTISED_Pause
)
456 adv
|= ADVERTISE_PAUSE_CAP
;
457 if (advertise
& ADVERTISED_Asym_Pause
)
458 adv
|= ADVERTISE_PAUSE_ASYM
;
461 err
= phy_write(phydev
, MII_ADVERTISE
, adv
);
468 /* Configure gigabit if it's supported */
469 if (phydev
->supported
& (SUPPORTED_1000baseT_Half
|
470 SUPPORTED_1000baseT_Full
)) {
471 oldadv
= adv
= phy_read(phydev
, MII_CTRL1000
);
476 adv
&= ~(ADVERTISE_1000FULL
| ADVERTISE_1000HALF
);
477 if (advertise
& SUPPORTED_1000baseT_Half
)
478 adv
|= ADVERTISE_1000HALF
;
479 if (advertise
& SUPPORTED_1000baseT_Full
)
480 adv
|= ADVERTISE_1000FULL
;
483 err
= phy_write(phydev
, MII_CTRL1000
, adv
);
493 EXPORT_SYMBOL(genphy_config_advert
);
496 * genphy_setup_forced - configures/forces speed/duplex from @phydev
497 * @phydev: target phy_device struct
499 * Description: Configures MII_BMCR to force speed/duplex
500 * to the values in phydev. Assumes that the values are valid.
501 * Please see phy_sanitize_settings().
503 int genphy_setup_forced(struct phy_device
*phydev
)
508 phydev
->pause
= phydev
->asym_pause
= 0;
510 if (SPEED_1000
== phydev
->speed
)
511 ctl
|= BMCR_SPEED1000
;
512 else if (SPEED_100
== phydev
->speed
)
513 ctl
|= BMCR_SPEED100
;
515 if (DUPLEX_FULL
== phydev
->duplex
)
516 ctl
|= BMCR_FULLDPLX
;
518 err
= phy_write(phydev
, MII_BMCR
, ctl
);
524 * Run the fixups on this PHY, just in case the
525 * board code needs to change something after a reset
527 err
= phy_scan_fixups(phydev
);
532 /* We just reset the device, so we'd better configure any
533 * settings the PHY requires to operate */
534 if (phydev
->drv
->config_init
)
535 err
= phydev
->drv
->config_init(phydev
);
542 * genphy_restart_aneg - Enable and Restart Autonegotiation
543 * @phydev: target phy_device struct
545 int genphy_restart_aneg(struct phy_device
*phydev
)
549 ctl
= phy_read(phydev
, MII_BMCR
);
554 ctl
|= (BMCR_ANENABLE
| BMCR_ANRESTART
);
556 /* Don't isolate the PHY if we're negotiating */
557 ctl
&= ~(BMCR_ISOLATE
);
559 ctl
= phy_write(phydev
, MII_BMCR
, ctl
);
563 EXPORT_SYMBOL(genphy_restart_aneg
);
567 * genphy_config_aneg - restart auto-negotiation or write BMCR
568 * @phydev: target phy_device struct
570 * Description: If auto-negotiation is enabled, we configure the
571 * advertising, and then restart auto-negotiation. If it is not
572 * enabled, then we write the BMCR.
574 int genphy_config_aneg(struct phy_device
*phydev
)
578 if (AUTONEG_ENABLE
!= phydev
->autoneg
)
579 return genphy_setup_forced(phydev
);
581 result
= genphy_config_advert(phydev
);
583 if (result
< 0) /* error */
587 /* Advertisment hasn't changed, but maybe aneg was never on to
588 * begin with? Or maybe phy was isolated? */
589 int ctl
= phy_read(phydev
, MII_BMCR
);
594 if (!(ctl
& BMCR_ANENABLE
) || (ctl
& BMCR_ISOLATE
))
595 result
= 1; /* do restart aneg */
598 /* Only restart aneg if we are advertising something different
599 * than we were before. */
601 result
= genphy_restart_aneg(phydev
);
605 EXPORT_SYMBOL(genphy_config_aneg
);
608 * genphy_update_link - update link status in @phydev
609 * @phydev: target phy_device struct
611 * Description: Update the value in phydev->link to reflect the
612 * current link value. In order to do this, we need to read
613 * the status register twice, keeping the second value.
615 int genphy_update_link(struct phy_device
*phydev
)
620 status
= phy_read(phydev
, MII_BMSR
);
625 /* Read link and autonegotiation status */
626 status
= phy_read(phydev
, MII_BMSR
);
631 if ((status
& BMSR_LSTATUS
) == 0)
638 EXPORT_SYMBOL(genphy_update_link
);
641 * genphy_read_status - check the link status and update current link state
642 * @phydev: target phy_device struct
644 * Description: Check the link, then figure out the current state
645 * by comparing what we advertise with what the link partner
646 * advertises. Start by checking the gigabit possibilities,
647 * then move on to 10/100.
649 int genphy_read_status(struct phy_device
*phydev
)
656 /* Update the link, but return if there
658 err
= genphy_update_link(phydev
);
662 if (AUTONEG_ENABLE
== phydev
->autoneg
) {
663 if (phydev
->supported
& (SUPPORTED_1000baseT_Half
664 | SUPPORTED_1000baseT_Full
)) {
665 lpagb
= phy_read(phydev
, MII_STAT1000
);
670 adv
= phy_read(phydev
, MII_CTRL1000
);
678 lpa
= phy_read(phydev
, MII_LPA
);
683 adv
= phy_read(phydev
, MII_ADVERTISE
);
690 phydev
->speed
= SPEED_10
;
691 phydev
->duplex
= DUPLEX_HALF
;
692 phydev
->pause
= phydev
->asym_pause
= 0;
694 if (lpagb
& (LPA_1000FULL
| LPA_1000HALF
)) {
695 phydev
->speed
= SPEED_1000
;
697 if (lpagb
& LPA_1000FULL
)
698 phydev
->duplex
= DUPLEX_FULL
;
699 } else if (lpa
& (LPA_100FULL
| LPA_100HALF
)) {
700 phydev
->speed
= SPEED_100
;
702 if (lpa
& LPA_100FULL
)
703 phydev
->duplex
= DUPLEX_FULL
;
705 if (lpa
& LPA_10FULL
)
706 phydev
->duplex
= DUPLEX_FULL
;
708 if (phydev
->duplex
== DUPLEX_FULL
){
709 phydev
->pause
= lpa
& LPA_PAUSE_CAP
? 1 : 0;
710 phydev
->asym_pause
= lpa
& LPA_PAUSE_ASYM
? 1 : 0;
713 int bmcr
= phy_read(phydev
, MII_BMCR
);
717 if (bmcr
& BMCR_FULLDPLX
)
718 phydev
->duplex
= DUPLEX_FULL
;
720 phydev
->duplex
= DUPLEX_HALF
;
722 if (bmcr
& BMCR_SPEED1000
)
723 phydev
->speed
= SPEED_1000
;
724 else if (bmcr
& BMCR_SPEED100
)
725 phydev
->speed
= SPEED_100
;
727 phydev
->speed
= SPEED_10
;
729 phydev
->pause
= phydev
->asym_pause
= 0;
734 EXPORT_SYMBOL(genphy_read_status
);
736 static int genphy_config_init(struct phy_device
*phydev
)
741 /* For now, I'll claim that the generic driver supports
742 * all possible port types */
743 features
= (SUPPORTED_TP
| SUPPORTED_MII
744 | SUPPORTED_AUI
| SUPPORTED_FIBRE
|
747 /* Do we support autonegotiation? */
748 val
= phy_read(phydev
, MII_BMSR
);
753 if (val
& BMSR_ANEGCAPABLE
)
754 features
|= SUPPORTED_Autoneg
;
756 if (val
& BMSR_100FULL
)
757 features
|= SUPPORTED_100baseT_Full
;
758 if (val
& BMSR_100HALF
)
759 features
|= SUPPORTED_100baseT_Half
;
760 if (val
& BMSR_10FULL
)
761 features
|= SUPPORTED_10baseT_Full
;
762 if (val
& BMSR_10HALF
)
763 features
|= SUPPORTED_10baseT_Half
;
765 if (val
& BMSR_ESTATEN
) {
766 val
= phy_read(phydev
, MII_ESTATUS
);
771 if (val
& ESTATUS_1000_TFULL
)
772 features
|= SUPPORTED_1000baseT_Full
;
773 if (val
& ESTATUS_1000_THALF
)
774 features
|= SUPPORTED_1000baseT_Half
;
777 phydev
->supported
= features
;
778 phydev
->advertising
= features
;
782 int genphy_suspend(struct phy_device
*phydev
)
786 mutex_lock(&phydev
->lock
);
788 value
= phy_read(phydev
, MII_BMCR
);
789 phy_write(phydev
, MII_BMCR
, (value
| BMCR_PDOWN
));
791 mutex_unlock(&phydev
->lock
);
795 EXPORT_SYMBOL(genphy_suspend
);
797 int genphy_resume(struct phy_device
*phydev
)
801 mutex_lock(&phydev
->lock
);
803 value
= phy_read(phydev
, MII_BMCR
);
804 phy_write(phydev
, MII_BMCR
, (value
& ~BMCR_PDOWN
));
806 mutex_unlock(&phydev
->lock
);
810 EXPORT_SYMBOL(genphy_resume
);
813 * phy_probe - probe and init a PHY device
814 * @dev: device to probe and init
816 * Description: Take care of setting up the phy_device structure,
817 * set the state to READY (the driver's init function should
818 * set it to STARTING if needed).
820 static int phy_probe(struct device
*dev
)
822 struct phy_device
*phydev
;
823 struct phy_driver
*phydrv
;
824 struct device_driver
*drv
;
827 phydev
= to_phy_device(dev
);
829 /* Make sure the driver is held.
830 * XXX -- Is this correct? */
831 drv
= get_driver(phydev
->dev
.driver
);
832 phydrv
= to_phy_driver(drv
);
833 phydev
->drv
= phydrv
;
835 /* Disable the interrupt if the PHY doesn't support it */
836 if (!(phydrv
->flags
& PHY_HAS_INTERRUPT
))
837 phydev
->irq
= PHY_POLL
;
839 mutex_lock(&phydev
->lock
);
841 /* Start out supporting everything. Eventually,
842 * a controller will attach, and may modify one
843 * or both of these values */
844 phydev
->supported
= phydrv
->features
;
845 phydev
->advertising
= phydrv
->features
;
847 /* Set the state to READY by default */
848 phydev
->state
= PHY_READY
;
850 if (phydev
->drv
->probe
)
851 err
= phydev
->drv
->probe(phydev
);
853 mutex_unlock(&phydev
->lock
);
859 static int phy_remove(struct device
*dev
)
861 struct phy_device
*phydev
;
863 phydev
= to_phy_device(dev
);
865 mutex_lock(&phydev
->lock
);
866 phydev
->state
= PHY_DOWN
;
867 mutex_unlock(&phydev
->lock
);
869 if (phydev
->drv
->remove
)
870 phydev
->drv
->remove(phydev
);
872 put_driver(dev
->driver
);
879 * phy_driver_register - register a phy_driver with the PHY layer
880 * @new_driver: new phy_driver to register
882 int phy_driver_register(struct phy_driver
*new_driver
)
886 new_driver
->driver
.name
= new_driver
->name
;
887 new_driver
->driver
.bus
= &mdio_bus_type
;
888 new_driver
->driver
.probe
= phy_probe
;
889 new_driver
->driver
.remove
= phy_remove
;
891 retval
= driver_register(&new_driver
->driver
);
894 printk(KERN_ERR
"%s: Error %d in registering driver\n",
895 new_driver
->name
, retval
);
900 pr_debug("%s: Registered new driver\n", new_driver
->name
);
904 EXPORT_SYMBOL(phy_driver_register
);
906 void phy_driver_unregister(struct phy_driver
*drv
)
908 driver_unregister(&drv
->driver
);
910 EXPORT_SYMBOL(phy_driver_unregister
);
912 static struct phy_driver genphy_driver
= {
913 .phy_id
= 0xffffffff,
914 .phy_id_mask
= 0xffffffff,
915 .name
= "Generic PHY",
916 .config_init
= genphy_config_init
,
918 .config_aneg
= genphy_config_aneg
,
919 .read_status
= genphy_read_status
,
920 .suspend
= genphy_suspend
,
921 .resume
= genphy_resume
,
922 .driver
= {.owner
= THIS_MODULE
, },
925 static int __init
phy_init(void)
929 rc
= mdio_bus_init();
933 rc
= phy_driver_register(&genphy_driver
);
940 static void __exit
phy_exit(void)
942 phy_driver_unregister(&genphy_driver
);
946 subsys_initcall(phy_init
);
947 module_exit(phy_exit
);