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