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00db8189 AF |
1 | /* |
2 | * drivers/net/phy/phy_device.c | |
3 | * | |
4 | * Framework for finding and configuring PHYs. | |
5 | * Also contains generic PHY driver | |
6 | * | |
7 | * Author: Andy Fleming | |
8 | * | |
9 | * Copyright (c) 2004 Freescale Semiconductor, Inc. | |
10 | * | |
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. | |
15 | * | |
16 | */ | |
00db8189 AF |
17 | #include <linux/kernel.h> |
18 | #include <linux/sched.h> | |
19 | #include <linux/string.h> | |
20 | #include <linux/errno.h> | |
21 | #include <linux/unistd.h> | |
22 | #include <linux/slab.h> | |
23 | #include <linux/interrupt.h> | |
24 | #include <linux/init.h> | |
25 | #include <linux/delay.h> | |
26 | #include <linux/netdevice.h> | |
27 | #include <linux/etherdevice.h> | |
28 | #include <linux/skbuff.h> | |
29 | #include <linux/spinlock.h> | |
30 | #include <linux/mm.h> | |
31 | #include <linux/module.h> | |
00db8189 AF |
32 | #include <linux/mii.h> |
33 | #include <linux/ethtool.h> | |
34 | #include <linux/phy.h> | |
35 | ||
36 | #include <asm/io.h> | |
37 | #include <asm/irq.h> | |
38 | #include <asm/uaccess.h> | |
39 | ||
afcceaa3 OH |
40 | MODULE_DESCRIPTION("PHY library"); |
41 | MODULE_AUTHOR("Andy Fleming"); | |
42 | MODULE_LICENSE("GPL"); | |
43 | ||
e1393456 AF |
44 | static struct phy_driver genphy_driver; |
45 | extern int mdio_bus_init(void); | |
46 | extern void mdio_bus_exit(void); | |
67c4f3fa | 47 | |
11b0bacd VB |
48 | struct phy_device* phy_device_create(struct mii_bus *bus, int addr, int phy_id) |
49 | { | |
50 | struct phy_device *dev; | |
51 | /* We allocate the device, and initialize the | |
52 | * default values */ | |
53 | dev = kcalloc(1, sizeof(*dev), GFP_KERNEL); | |
54 | ||
55 | if (NULL == dev) | |
56 | return (struct phy_device*) PTR_ERR((void*)-ENOMEM); | |
57 | ||
58 | dev->speed = 0; | |
59 | dev->duplex = -1; | |
60 | dev->pause = dev->asym_pause = 0; | |
61 | dev->link = 1; | |
62 | ||
63 | dev->autoneg = AUTONEG_ENABLE; | |
64 | ||
65 | dev->addr = addr; | |
66 | dev->phy_id = phy_id; | |
67 | dev->bus = bus; | |
68 | ||
69 | dev->state = PHY_DOWN; | |
70 | ||
71 | spin_lock_init(&dev->lock); | |
72 | ||
73 | return dev; | |
74 | } | |
75 | EXPORT_SYMBOL(phy_device_create); | |
76 | ||
00db8189 AF |
77 | /* get_phy_device |
78 | * | |
79 | * description: Reads the ID registers of the PHY at addr on the | |
80 | * bus, then allocates and returns the phy_device to | |
81 | * represent it. | |
82 | */ | |
83 | struct phy_device * get_phy_device(struct mii_bus *bus, int addr) | |
84 | { | |
85 | int phy_reg; | |
86 | u32 phy_id; | |
87 | struct phy_device *dev = NULL; | |
88 | ||
89 | /* Grab the bits from PHYIR1, and put them | |
90 | * in the upper half */ | |
91 | phy_reg = bus->read(bus, addr, MII_PHYSID1); | |
92 | ||
93 | if (phy_reg < 0) | |
94 | return ERR_PTR(phy_reg); | |
95 | ||
96 | phy_id = (phy_reg & 0xffff) << 16; | |
97 | ||
98 | /* Grab the bits from PHYIR2, and put them in the lower half */ | |
99 | phy_reg = bus->read(bus, addr, MII_PHYSID2); | |
100 | ||
101 | if (phy_reg < 0) | |
102 | return ERR_PTR(phy_reg); | |
103 | ||
104 | phy_id |= (phy_reg & 0xffff); | |
105 | ||
106 | /* If the phy_id is all Fs, there is no device there */ | |
107 | if (0xffffffff == phy_id) | |
108 | return NULL; | |
109 | ||
11b0bacd | 110 | dev = phy_device_create(bus, addr, phy_id); |
00db8189 AF |
111 | |
112 | return dev; | |
113 | } | |
114 | ||
115 | /* phy_prepare_link: | |
116 | * | |
117 | * description: Tells the PHY infrastructure to handle the | |
118 | * gory details on monitoring link status (whether through | |
119 | * polling or an interrupt), and to call back to the | |
120 | * connected device driver when the link status changes. | |
121 | * If you want to monitor your own link state, don't call | |
122 | * this function */ | |
123 | void phy_prepare_link(struct phy_device *phydev, | |
124 | void (*handler)(struct net_device *)) | |
125 | { | |
126 | phydev->adjust_link = handler; | |
127 | } | |
128 | ||
e1393456 AF |
129 | /* phy_connect: |
130 | * | |
131 | * description: Convenience function for connecting ethernet | |
132 | * devices to PHY devices. The default behavior is for | |
133 | * the PHY infrastructure to handle everything, and only notify | |
134 | * the connected driver when the link status changes. If you | |
135 | * don't want, or can't use the provided functionality, you may | |
136 | * choose to call only the subset of functions which provide | |
137 | * the desired functionality. | |
138 | */ | |
139 | struct phy_device * phy_connect(struct net_device *dev, const char *phy_id, | |
140 | void (*handler)(struct net_device *), u32 flags) | |
141 | { | |
142 | struct phy_device *phydev; | |
143 | ||
144 | phydev = phy_attach(dev, phy_id, flags); | |
145 | ||
146 | if (IS_ERR(phydev)) | |
147 | return phydev; | |
148 | ||
149 | phy_prepare_link(phydev, handler); | |
150 | ||
151 | phy_start_machine(phydev, NULL); | |
152 | ||
153 | if (phydev->irq > 0) | |
154 | phy_start_interrupts(phydev); | |
155 | ||
156 | return phydev; | |
157 | } | |
158 | EXPORT_SYMBOL(phy_connect); | |
159 | ||
160 | void phy_disconnect(struct phy_device *phydev) | |
161 | { | |
162 | if (phydev->irq > 0) | |
163 | phy_stop_interrupts(phydev); | |
164 | ||
165 | phy_stop_machine(phydev); | |
166 | ||
167 | phydev->adjust_link = NULL; | |
168 | ||
169 | phy_detach(phydev); | |
170 | } | |
171 | EXPORT_SYMBOL(phy_disconnect); | |
172 | ||
e1393456 AF |
173 | /* phy_attach: |
174 | * | |
175 | * description: Called by drivers to attach to a particular PHY | |
176 | * device. The phy_device is found, and properly hooked up | |
177 | * to the phy_driver. If no driver is attached, then the | |
178 | * genphy_driver is used. The phy_device is given a ptr to | |
179 | * the attaching device, and given a callback for link status | |
180 | * change. The phy_device is returned to the attaching | |
181 | * driver. | |
182 | */ | |
183 | static int phy_compare_id(struct device *dev, void *data) | |
184 | { | |
185 | return strcmp((char *)data, dev->bus_id) ? 0 : 1; | |
186 | } | |
187 | ||
188 | struct phy_device *phy_attach(struct net_device *dev, | |
189 | const char *phy_id, u32 flags) | |
190 | { | |
191 | struct bus_type *bus = &mdio_bus_type; | |
192 | struct phy_device *phydev; | |
193 | struct device *d; | |
194 | ||
195 | /* Search the list of PHY devices on the mdio bus for the | |
196 | * PHY with the requested name */ | |
197 | d = bus_find_device(bus, NULL, (void *)phy_id, phy_compare_id); | |
198 | ||
199 | if (d) { | |
200 | phydev = to_phy_device(d); | |
201 | } else { | |
202 | printk(KERN_ERR "%s not found\n", phy_id); | |
203 | return ERR_PTR(-ENODEV); | |
204 | } | |
205 | ||
206 | /* Assume that if there is no driver, that it doesn't | |
207 | * exist, and we should use the genphy driver. */ | |
208 | if (NULL == d->driver) { | |
209 | int err; | |
210 | down_write(&d->bus->subsys.rwsem); | |
211 | d->driver = &genphy_driver.driver; | |
212 | ||
213 | err = d->driver->probe(d); | |
214 | ||
215 | if (err < 0) | |
216 | return ERR_PTR(err); | |
217 | ||
218 | device_bind_driver(d); | |
219 | up_write(&d->bus->subsys.rwsem); | |
220 | } | |
221 | ||
222 | if (phydev->attached_dev) { | |
223 | printk(KERN_ERR "%s: %s already attached\n", | |
224 | dev->name, phy_id); | |
225 | return ERR_PTR(-EBUSY); | |
226 | } | |
227 | ||
228 | phydev->attached_dev = dev; | |
229 | ||
230 | phydev->dev_flags = flags; | |
231 | ||
232 | return phydev; | |
233 | } | |
234 | EXPORT_SYMBOL(phy_attach); | |
235 | ||
236 | void phy_detach(struct phy_device *phydev) | |
237 | { | |
238 | phydev->attached_dev = NULL; | |
239 | ||
240 | /* If the device had no specific driver before (i.e. - it | |
241 | * was using the generic driver), we unbind the device | |
242 | * from the generic driver so that there's a chance a | |
243 | * real driver could be loaded */ | |
244 | if (phydev->dev.driver == &genphy_driver.driver) { | |
245 | down_write(&phydev->dev.bus->subsys.rwsem); | |
246 | device_release_driver(&phydev->dev); | |
247 | up_write(&phydev->dev.bus->subsys.rwsem); | |
248 | } | |
249 | } | |
250 | EXPORT_SYMBOL(phy_detach); | |
251 | ||
252 | ||
00db8189 AF |
253 | /* Generic PHY support and helper functions */ |
254 | ||
255 | /* genphy_config_advert | |
256 | * | |
257 | * description: Writes MII_ADVERTISE with the appropriate values, | |
258 | * after sanitizing the values to make sure we only advertise | |
259 | * what is supported | |
260 | */ | |
e1393456 | 261 | int genphy_config_advert(struct phy_device *phydev) |
00db8189 AF |
262 | { |
263 | u32 advertise; | |
264 | int adv; | |
265 | int err; | |
266 | ||
267 | /* Only allow advertising what | |
268 | * this PHY supports */ | |
269 | phydev->advertising &= phydev->supported; | |
270 | advertise = phydev->advertising; | |
271 | ||
272 | /* Setup standard advertisement */ | |
273 | adv = phy_read(phydev, MII_ADVERTISE); | |
274 | ||
275 | if (adv < 0) | |
276 | return adv; | |
277 | ||
278 | adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4 | ADVERTISE_PAUSE_CAP | | |
279 | ADVERTISE_PAUSE_ASYM); | |
280 | if (advertise & ADVERTISED_10baseT_Half) | |
281 | adv |= ADVERTISE_10HALF; | |
282 | if (advertise & ADVERTISED_10baseT_Full) | |
283 | adv |= ADVERTISE_10FULL; | |
284 | if (advertise & ADVERTISED_100baseT_Half) | |
285 | adv |= ADVERTISE_100HALF; | |
286 | if (advertise & ADVERTISED_100baseT_Full) | |
287 | adv |= ADVERTISE_100FULL; | |
288 | if (advertise & ADVERTISED_Pause) | |
289 | adv |= ADVERTISE_PAUSE_CAP; | |
290 | if (advertise & ADVERTISED_Asym_Pause) | |
291 | adv |= ADVERTISE_PAUSE_ASYM; | |
292 | ||
293 | err = phy_write(phydev, MII_ADVERTISE, adv); | |
294 | ||
295 | if (err < 0) | |
296 | return err; | |
297 | ||
298 | /* Configure gigabit if it's supported */ | |
299 | if (phydev->supported & (SUPPORTED_1000baseT_Half | | |
300 | SUPPORTED_1000baseT_Full)) { | |
301 | adv = phy_read(phydev, MII_CTRL1000); | |
302 | ||
303 | if (adv < 0) | |
304 | return adv; | |
305 | ||
306 | adv &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF); | |
307 | if (advertise & SUPPORTED_1000baseT_Half) | |
308 | adv |= ADVERTISE_1000HALF; | |
309 | if (advertise & SUPPORTED_1000baseT_Full) | |
310 | adv |= ADVERTISE_1000FULL; | |
311 | err = phy_write(phydev, MII_CTRL1000, adv); | |
312 | ||
313 | if (err < 0) | |
314 | return err; | |
315 | } | |
316 | ||
317 | return adv; | |
318 | } | |
e1393456 | 319 | EXPORT_SYMBOL(genphy_config_advert); |
00db8189 AF |
320 | |
321 | /* genphy_setup_forced | |
322 | * | |
323 | * description: Configures MII_BMCR to force speed/duplex | |
324 | * to the values in phydev. Assumes that the values are valid. | |
325 | * Please see phy_sanitize_settings() */ | |
326 | int genphy_setup_forced(struct phy_device *phydev) | |
327 | { | |
328 | int ctl = BMCR_RESET; | |
329 | ||
330 | phydev->pause = phydev->asym_pause = 0; | |
331 | ||
332 | if (SPEED_1000 == phydev->speed) | |
333 | ctl |= BMCR_SPEED1000; | |
334 | else if (SPEED_100 == phydev->speed) | |
335 | ctl |= BMCR_SPEED100; | |
336 | ||
337 | if (DUPLEX_FULL == phydev->duplex) | |
338 | ctl |= BMCR_FULLDPLX; | |
339 | ||
340 | ctl = phy_write(phydev, MII_BMCR, ctl); | |
341 | ||
342 | if (ctl < 0) | |
343 | return ctl; | |
344 | ||
345 | /* We just reset the device, so we'd better configure any | |
346 | * settings the PHY requires to operate */ | |
347 | if (phydev->drv->config_init) | |
348 | ctl = phydev->drv->config_init(phydev); | |
349 | ||
350 | return ctl; | |
351 | } | |
352 | ||
353 | ||
354 | /* Enable and Restart Autonegotiation */ | |
355 | int genphy_restart_aneg(struct phy_device *phydev) | |
356 | { | |
357 | int ctl; | |
358 | ||
359 | ctl = phy_read(phydev, MII_BMCR); | |
360 | ||
361 | if (ctl < 0) | |
362 | return ctl; | |
363 | ||
364 | ctl |= (BMCR_ANENABLE | BMCR_ANRESTART); | |
365 | ||
366 | /* Don't isolate the PHY if we're negotiating */ | |
367 | ctl &= ~(BMCR_ISOLATE); | |
368 | ||
369 | ctl = phy_write(phydev, MII_BMCR, ctl); | |
370 | ||
371 | return ctl; | |
372 | } | |
373 | ||
374 | ||
375 | /* genphy_config_aneg | |
376 | * | |
377 | * description: If auto-negotiation is enabled, we configure the | |
378 | * advertising, and then restart auto-negotiation. If it is not | |
379 | * enabled, then we write the BMCR | |
380 | */ | |
381 | int genphy_config_aneg(struct phy_device *phydev) | |
382 | { | |
383 | int err = 0; | |
384 | ||
385 | if (AUTONEG_ENABLE == phydev->autoneg) { | |
386 | err = genphy_config_advert(phydev); | |
387 | ||
388 | if (err < 0) | |
389 | return err; | |
390 | ||
391 | err = genphy_restart_aneg(phydev); | |
392 | } else | |
393 | err = genphy_setup_forced(phydev); | |
394 | ||
395 | return err; | |
396 | } | |
397 | EXPORT_SYMBOL(genphy_config_aneg); | |
398 | ||
399 | /* genphy_update_link | |
400 | * | |
401 | * description: Update the value in phydev->link to reflect the | |
402 | * current link value. In order to do this, we need to read | |
403 | * the status register twice, keeping the second value | |
404 | */ | |
405 | int genphy_update_link(struct phy_device *phydev) | |
406 | { | |
407 | int status; | |
408 | ||
409 | /* Do a fake read */ | |
410 | status = phy_read(phydev, MII_BMSR); | |
411 | ||
412 | if (status < 0) | |
413 | return status; | |
414 | ||
415 | /* Read link and autonegotiation status */ | |
416 | status = phy_read(phydev, MII_BMSR); | |
417 | ||
418 | if (status < 0) | |
419 | return status; | |
420 | ||
421 | if ((status & BMSR_LSTATUS) == 0) | |
422 | phydev->link = 0; | |
423 | else | |
424 | phydev->link = 1; | |
425 | ||
426 | return 0; | |
427 | } | |
428 | ||
429 | /* genphy_read_status | |
430 | * | |
431 | * description: Check the link, then figure out the current state | |
432 | * by comparing what we advertise with what the link partner | |
433 | * advertises. Start by checking the gigabit possibilities, | |
434 | * then move on to 10/100. | |
435 | */ | |
436 | int genphy_read_status(struct phy_device *phydev) | |
437 | { | |
438 | int adv; | |
439 | int err; | |
440 | int lpa; | |
441 | int lpagb = 0; | |
442 | ||
443 | /* Update the link, but return if there | |
444 | * was an error */ | |
445 | err = genphy_update_link(phydev); | |
446 | if (err) | |
447 | return err; | |
448 | ||
449 | if (AUTONEG_ENABLE == phydev->autoneg) { | |
450 | if (phydev->supported & (SUPPORTED_1000baseT_Half | |
451 | | SUPPORTED_1000baseT_Full)) { | |
452 | lpagb = phy_read(phydev, MII_STAT1000); | |
453 | ||
454 | if (lpagb < 0) | |
455 | return lpagb; | |
456 | ||
457 | adv = phy_read(phydev, MII_CTRL1000); | |
458 | ||
459 | if (adv < 0) | |
460 | return adv; | |
461 | ||
462 | lpagb &= adv << 2; | |
463 | } | |
464 | ||
465 | lpa = phy_read(phydev, MII_LPA); | |
466 | ||
467 | if (lpa < 0) | |
468 | return lpa; | |
469 | ||
470 | adv = phy_read(phydev, MII_ADVERTISE); | |
471 | ||
472 | if (adv < 0) | |
473 | return adv; | |
474 | ||
475 | lpa &= adv; | |
476 | ||
477 | phydev->speed = SPEED_10; | |
478 | phydev->duplex = DUPLEX_HALF; | |
479 | phydev->pause = phydev->asym_pause = 0; | |
480 | ||
481 | if (lpagb & (LPA_1000FULL | LPA_1000HALF)) { | |
482 | phydev->speed = SPEED_1000; | |
483 | ||
484 | if (lpagb & LPA_1000FULL) | |
485 | phydev->duplex = DUPLEX_FULL; | |
486 | } else if (lpa & (LPA_100FULL | LPA_100HALF)) { | |
487 | phydev->speed = SPEED_100; | |
488 | ||
489 | if (lpa & LPA_100FULL) | |
490 | phydev->duplex = DUPLEX_FULL; | |
491 | } else | |
492 | if (lpa & LPA_10FULL) | |
493 | phydev->duplex = DUPLEX_FULL; | |
494 | ||
495 | if (phydev->duplex == DUPLEX_FULL){ | |
496 | phydev->pause = lpa & LPA_PAUSE_CAP ? 1 : 0; | |
497 | phydev->asym_pause = lpa & LPA_PAUSE_ASYM ? 1 : 0; | |
498 | } | |
499 | } else { | |
500 | int bmcr = phy_read(phydev, MII_BMCR); | |
501 | if (bmcr < 0) | |
502 | return bmcr; | |
503 | ||
504 | if (bmcr & BMCR_FULLDPLX) | |
505 | phydev->duplex = DUPLEX_FULL; | |
506 | else | |
507 | phydev->duplex = DUPLEX_HALF; | |
508 | ||
509 | if (bmcr & BMCR_SPEED1000) | |
510 | phydev->speed = SPEED_1000; | |
511 | else if (bmcr & BMCR_SPEED100) | |
512 | phydev->speed = SPEED_100; | |
513 | else | |
514 | phydev->speed = SPEED_10; | |
515 | ||
516 | phydev->pause = phydev->asym_pause = 0; | |
517 | } | |
518 | ||
519 | return 0; | |
520 | } | |
521 | EXPORT_SYMBOL(genphy_read_status); | |
522 | ||
523 | static int genphy_config_init(struct phy_device *phydev) | |
524 | { | |
84c22d79 | 525 | int val; |
00db8189 AF |
526 | u32 features; |
527 | ||
528 | /* For now, I'll claim that the generic driver supports | |
529 | * all possible port types */ | |
530 | features = (SUPPORTED_TP | SUPPORTED_MII | |
531 | | SUPPORTED_AUI | SUPPORTED_FIBRE | | |
532 | SUPPORTED_BNC); | |
533 | ||
534 | /* Do we support autonegotiation? */ | |
535 | val = phy_read(phydev, MII_BMSR); | |
536 | ||
537 | if (val < 0) | |
538 | return val; | |
539 | ||
540 | if (val & BMSR_ANEGCAPABLE) | |
541 | features |= SUPPORTED_Autoneg; | |
542 | ||
543 | if (val & BMSR_100FULL) | |
544 | features |= SUPPORTED_100baseT_Full; | |
545 | if (val & BMSR_100HALF) | |
546 | features |= SUPPORTED_100baseT_Half; | |
547 | if (val & BMSR_10FULL) | |
548 | features |= SUPPORTED_10baseT_Full; | |
549 | if (val & BMSR_10HALF) | |
550 | features |= SUPPORTED_10baseT_Half; | |
551 | ||
552 | if (val & BMSR_ESTATEN) { | |
553 | val = phy_read(phydev, MII_ESTATUS); | |
554 | ||
555 | if (val < 0) | |
556 | return val; | |
557 | ||
558 | if (val & ESTATUS_1000_TFULL) | |
559 | features |= SUPPORTED_1000baseT_Full; | |
560 | if (val & ESTATUS_1000_THALF) | |
561 | features |= SUPPORTED_1000baseT_Half; | |
562 | } | |
563 | ||
564 | phydev->supported = features; | |
565 | phydev->advertising = features; | |
566 | ||
567 | return 0; | |
568 | } | |
569 | ||
570 | ||
571 | /* phy_probe | |
572 | * | |
573 | * description: Take care of setting up the phy_device structure, | |
574 | * set the state to READY (the driver's init function should | |
575 | * set it to STARTING if needed). | |
576 | */ | |
577 | static int phy_probe(struct device *dev) | |
578 | { | |
579 | struct phy_device *phydev; | |
580 | struct phy_driver *phydrv; | |
581 | struct device_driver *drv; | |
582 | int err = 0; | |
583 | ||
584 | phydev = to_phy_device(dev); | |
585 | ||
586 | /* Make sure the driver is held. | |
587 | * XXX -- Is this correct? */ | |
588 | drv = get_driver(phydev->dev.driver); | |
589 | phydrv = to_phy_driver(drv); | |
590 | phydev->drv = phydrv; | |
591 | ||
592 | /* Disable the interrupt if the PHY doesn't support it */ | |
593 | if (!(phydrv->flags & PHY_HAS_INTERRUPT)) | |
594 | phydev->irq = PHY_POLL; | |
595 | ||
596 | spin_lock(&phydev->lock); | |
597 | ||
598 | /* Start out supporting everything. Eventually, | |
599 | * a controller will attach, and may modify one | |
600 | * or both of these values */ | |
601 | phydev->supported = phydrv->features; | |
602 | phydev->advertising = phydrv->features; | |
603 | ||
604 | /* Set the state to READY by default */ | |
605 | phydev->state = PHY_READY; | |
606 | ||
607 | if (phydev->drv->probe) | |
608 | err = phydev->drv->probe(phydev); | |
609 | ||
610 | spin_unlock(&phydev->lock); | |
611 | ||
612 | if (err < 0) | |
613 | return err; | |
614 | ||
615 | if (phydev->drv->config_init) | |
616 | err = phydev->drv->config_init(phydev); | |
617 | ||
618 | return err; | |
619 | } | |
620 | ||
621 | static int phy_remove(struct device *dev) | |
622 | { | |
623 | struct phy_device *phydev; | |
624 | ||
625 | phydev = to_phy_device(dev); | |
626 | ||
627 | spin_lock(&phydev->lock); | |
628 | phydev->state = PHY_DOWN; | |
629 | spin_unlock(&phydev->lock); | |
630 | ||
631 | if (phydev->drv->remove) | |
632 | phydev->drv->remove(phydev); | |
633 | ||
634 | put_driver(dev->driver); | |
635 | phydev->drv = NULL; | |
636 | ||
637 | return 0; | |
638 | } | |
639 | ||
640 | int phy_driver_register(struct phy_driver *new_driver) | |
641 | { | |
642 | int retval; | |
643 | ||
644 | memset(&new_driver->driver, 0, sizeof(new_driver->driver)); | |
645 | new_driver->driver.name = new_driver->name; | |
646 | new_driver->driver.bus = &mdio_bus_type; | |
647 | new_driver->driver.probe = phy_probe; | |
648 | new_driver->driver.remove = phy_remove; | |
649 | ||
650 | retval = driver_register(&new_driver->driver); | |
651 | ||
652 | if (retval) { | |
653 | printk(KERN_ERR "%s: Error %d in registering driver\n", | |
654 | new_driver->name, retval); | |
655 | ||
656 | return retval; | |
657 | } | |
658 | ||
659 | pr_info("%s: Registered new driver\n", new_driver->name); | |
660 | ||
661 | return 0; | |
662 | } | |
663 | EXPORT_SYMBOL(phy_driver_register); | |
664 | ||
665 | void phy_driver_unregister(struct phy_driver *drv) | |
666 | { | |
667 | driver_unregister(&drv->driver); | |
668 | } | |
669 | EXPORT_SYMBOL(phy_driver_unregister); | |
670 | ||
e1393456 AF |
671 | static struct phy_driver genphy_driver = { |
672 | .phy_id = 0xffffffff, | |
673 | .phy_id_mask = 0xffffffff, | |
674 | .name = "Generic PHY", | |
675 | .config_init = genphy_config_init, | |
676 | .features = 0, | |
677 | .config_aneg = genphy_config_aneg, | |
678 | .read_status = genphy_read_status, | |
679 | .driver = {.owner= THIS_MODULE, }, | |
680 | }; | |
00db8189 | 681 | |
67c4f3fa | 682 | static int __init phy_init(void) |
00db8189 | 683 | { |
67c4f3fa | 684 | int rc; |
67c4f3fa JG |
685 | |
686 | rc = mdio_bus_init(); | |
687 | if (rc) | |
e1393456 | 688 | return rc; |
00db8189 | 689 | |
e1393456 AF |
690 | rc = phy_driver_register(&genphy_driver); |
691 | if (rc) | |
692 | mdio_bus_exit(); | |
67c4f3fa | 693 | |
67c4f3fa | 694 | return rc; |
00db8189 AF |
695 | } |
696 | ||
67c4f3fa | 697 | static void __exit phy_exit(void) |
00db8189 AF |
698 | { |
699 | phy_driver_unregister(&genphy_driver); | |
e1393456 | 700 | mdio_bus_exit(); |
00db8189 AF |
701 | } |
702 | ||
e1393456 | 703 | subsys_initcall(phy_init); |
67c4f3fa | 704 | module_exit(phy_exit); |