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