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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 | 17 | #include <linux/kernel.h> |
00db8189 AF |
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> | |
28 | #include <linux/spinlock.h> | |
29 | #include <linux/mm.h> | |
30 | #include <linux/module.h> | |
00db8189 AF |
31 | #include <linux/mii.h> |
32 | #include <linux/ethtool.h> | |
33 | #include <linux/phy.h> | |
34 | ||
35 | #include <asm/io.h> | |
36 | #include <asm/irq.h> | |
37 | #include <asm/uaccess.h> | |
38 | ||
afcceaa3 OH |
39 | MODULE_DESCRIPTION("PHY library"); |
40 | MODULE_AUTHOR("Andy Fleming"); | |
41 | MODULE_LICENSE("GPL"); | |
42 | ||
e1393456 AF |
43 | static struct phy_driver genphy_driver; |
44 | extern int mdio_bus_init(void); | |
45 | extern void mdio_bus_exit(void); | |
67c4f3fa | 46 | |
11b0bacd VB |
47 | struct phy_device* phy_device_create(struct mii_bus *bus, int addr, int phy_id) |
48 | { | |
49 | struct phy_device *dev; | |
50 | /* We allocate the device, and initialize the | |
51 | * default values */ | |
cd861280 | 52 | dev = kzalloc(sizeof(*dev), GFP_KERNEL); |
11b0bacd VB |
53 | |
54 | if (NULL == dev) | |
55 | return (struct phy_device*) PTR_ERR((void*)-ENOMEM); | |
56 | ||
57 | dev->speed = 0; | |
58 | dev->duplex = -1; | |
59 | dev->pause = dev->asym_pause = 0; | |
60 | dev->link = 1; | |
e8a2b6a4 | 61 | dev->interface = PHY_INTERFACE_MODE_GMII; |
11b0bacd VB |
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, | |
e8a2b6a4 | 140 | void (*handler)(struct net_device *), u32 flags, |
1a168934 | 141 | phy_interface_t interface) |
e1393456 AF |
142 | { |
143 | struct phy_device *phydev; | |
144 | ||
e8a2b6a4 | 145 | phydev = phy_attach(dev, phy_id, flags, interface); |
e1393456 AF |
146 | |
147 | if (IS_ERR(phydev)) | |
148 | return phydev; | |
149 | ||
150 | phy_prepare_link(phydev, handler); | |
151 | ||
152 | phy_start_machine(phydev, NULL); | |
153 | ||
154 | if (phydev->irq > 0) | |
155 | phy_start_interrupts(phydev); | |
156 | ||
157 | return phydev; | |
158 | } | |
159 | EXPORT_SYMBOL(phy_connect); | |
160 | ||
161 | void phy_disconnect(struct phy_device *phydev) | |
162 | { | |
163 | if (phydev->irq > 0) | |
164 | phy_stop_interrupts(phydev); | |
165 | ||
166 | phy_stop_machine(phydev); | |
167 | ||
168 | phydev->adjust_link = NULL; | |
169 | ||
170 | phy_detach(phydev); | |
171 | } | |
172 | EXPORT_SYMBOL(phy_disconnect); | |
173 | ||
e1393456 AF |
174 | /* phy_attach: |
175 | * | |
176 | * description: Called by drivers to attach to a particular PHY | |
177 | * device. The phy_device is found, and properly hooked up | |
178 | * to the phy_driver. If no driver is attached, then the | |
179 | * genphy_driver is used. The phy_device is given a ptr to | |
180 | * the attaching device, and given a callback for link status | |
181 | * change. The phy_device is returned to the attaching | |
182 | * driver. | |
183 | */ | |
184 | static int phy_compare_id(struct device *dev, void *data) | |
185 | { | |
186 | return strcmp((char *)data, dev->bus_id) ? 0 : 1; | |
187 | } | |
188 | ||
189 | struct phy_device *phy_attach(struct net_device *dev, | |
1a168934 | 190 | const char *phy_id, u32 flags, phy_interface_t interface) |
e1393456 AF |
191 | { |
192 | struct bus_type *bus = &mdio_bus_type; | |
193 | struct phy_device *phydev; | |
194 | struct device *d; | |
195 | ||
196 | /* Search the list of PHY devices on the mdio bus for the | |
197 | * PHY with the requested name */ | |
198 | d = bus_find_device(bus, NULL, (void *)phy_id, phy_compare_id); | |
199 | ||
200 | if (d) { | |
201 | phydev = to_phy_device(d); | |
202 | } else { | |
203 | printk(KERN_ERR "%s not found\n", phy_id); | |
204 | return ERR_PTR(-ENODEV); | |
205 | } | |
206 | ||
207 | /* Assume that if there is no driver, that it doesn't | |
208 | * exist, and we should use the genphy driver. */ | |
209 | if (NULL == d->driver) { | |
210 | int err; | |
e1393456 AF |
211 | d->driver = &genphy_driver.driver; |
212 | ||
213 | err = d->driver->probe(d); | |
b7a00ecd JG |
214 | if (err >= 0) |
215 | err = device_bind_driver(d); | |
e1393456 | 216 | |
b7a00ecd JG |
217 | if (err) |
218 | return ERR_PTR(err); | |
e1393456 AF |
219 | } |
220 | ||
221 | if (phydev->attached_dev) { | |
222 | printk(KERN_ERR "%s: %s already attached\n", | |
223 | dev->name, phy_id); | |
224 | return ERR_PTR(-EBUSY); | |
225 | } | |
226 | ||
227 | phydev->attached_dev = dev; | |
228 | ||
229 | phydev->dev_flags = flags; | |
230 | ||
e8a2b6a4 AF |
231 | phydev->interface = interface; |
232 | ||
233 | /* Do initial configuration here, now that | |
234 | * we have certain key parameters | |
235 | * (dev_flags and interface) */ | |
236 | if (phydev->drv->config_init) { | |
237 | int err; | |
238 | ||
239 | err = phydev->drv->config_init(phydev); | |
240 | ||
241 | if (err < 0) | |
242 | return ERR_PTR(err); | |
243 | } | |
244 | ||
e1393456 AF |
245 | return phydev; |
246 | } | |
247 | EXPORT_SYMBOL(phy_attach); | |
248 | ||
249 | void phy_detach(struct phy_device *phydev) | |
250 | { | |
251 | phydev->attached_dev = NULL; | |
252 | ||
253 | /* If the device had no specific driver before (i.e. - it | |
254 | * was using the generic driver), we unbind the device | |
255 | * from the generic driver so that there's a chance a | |
256 | * real driver could be loaded */ | |
87aebe07 | 257 | if (phydev->dev.driver == &genphy_driver.driver) |
e1393456 | 258 | device_release_driver(&phydev->dev); |
e1393456 AF |
259 | } |
260 | EXPORT_SYMBOL(phy_detach); | |
261 | ||
262 | ||
00db8189 AF |
263 | /* Generic PHY support and helper functions */ |
264 | ||
265 | /* genphy_config_advert | |
266 | * | |
267 | * description: Writes MII_ADVERTISE with the appropriate values, | |
268 | * after sanitizing the values to make sure we only advertise | |
269 | * what is supported | |
270 | */ | |
e1393456 | 271 | int genphy_config_advert(struct phy_device *phydev) |
00db8189 AF |
272 | { |
273 | u32 advertise; | |
274 | int adv; | |
275 | int err; | |
276 | ||
277 | /* Only allow advertising what | |
278 | * this PHY supports */ | |
279 | phydev->advertising &= phydev->supported; | |
280 | advertise = phydev->advertising; | |
281 | ||
282 | /* Setup standard advertisement */ | |
283 | adv = phy_read(phydev, MII_ADVERTISE); | |
284 | ||
285 | if (adv < 0) | |
286 | return adv; | |
287 | ||
288 | adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4 | ADVERTISE_PAUSE_CAP | | |
289 | ADVERTISE_PAUSE_ASYM); | |
290 | if (advertise & ADVERTISED_10baseT_Half) | |
291 | adv |= ADVERTISE_10HALF; | |
292 | if (advertise & ADVERTISED_10baseT_Full) | |
293 | adv |= ADVERTISE_10FULL; | |
294 | if (advertise & ADVERTISED_100baseT_Half) | |
295 | adv |= ADVERTISE_100HALF; | |
296 | if (advertise & ADVERTISED_100baseT_Full) | |
297 | adv |= ADVERTISE_100FULL; | |
298 | if (advertise & ADVERTISED_Pause) | |
299 | adv |= ADVERTISE_PAUSE_CAP; | |
300 | if (advertise & ADVERTISED_Asym_Pause) | |
301 | adv |= ADVERTISE_PAUSE_ASYM; | |
302 | ||
303 | err = phy_write(phydev, MII_ADVERTISE, adv); | |
304 | ||
305 | if (err < 0) | |
306 | return err; | |
307 | ||
308 | /* Configure gigabit if it's supported */ | |
309 | if (phydev->supported & (SUPPORTED_1000baseT_Half | | |
310 | SUPPORTED_1000baseT_Full)) { | |
311 | adv = phy_read(phydev, MII_CTRL1000); | |
312 | ||
313 | if (adv < 0) | |
314 | return adv; | |
315 | ||
316 | adv &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF); | |
317 | if (advertise & SUPPORTED_1000baseT_Half) | |
318 | adv |= ADVERTISE_1000HALF; | |
319 | if (advertise & SUPPORTED_1000baseT_Full) | |
320 | adv |= ADVERTISE_1000FULL; | |
321 | err = phy_write(phydev, MII_CTRL1000, adv); | |
322 | ||
323 | if (err < 0) | |
324 | return err; | |
325 | } | |
326 | ||
327 | return adv; | |
328 | } | |
e1393456 | 329 | EXPORT_SYMBOL(genphy_config_advert); |
00db8189 AF |
330 | |
331 | /* genphy_setup_forced | |
332 | * | |
333 | * description: Configures MII_BMCR to force speed/duplex | |
334 | * to the values in phydev. Assumes that the values are valid. | |
335 | * Please see phy_sanitize_settings() */ | |
336 | int genphy_setup_forced(struct phy_device *phydev) | |
337 | { | |
338 | int ctl = BMCR_RESET; | |
339 | ||
340 | phydev->pause = phydev->asym_pause = 0; | |
341 | ||
342 | if (SPEED_1000 == phydev->speed) | |
343 | ctl |= BMCR_SPEED1000; | |
344 | else if (SPEED_100 == phydev->speed) | |
345 | ctl |= BMCR_SPEED100; | |
346 | ||
347 | if (DUPLEX_FULL == phydev->duplex) | |
348 | ctl |= BMCR_FULLDPLX; | |
349 | ||
350 | ctl = phy_write(phydev, MII_BMCR, ctl); | |
351 | ||
352 | if (ctl < 0) | |
353 | return ctl; | |
354 | ||
355 | /* We just reset the device, so we'd better configure any | |
356 | * settings the PHY requires to operate */ | |
357 | if (phydev->drv->config_init) | |
358 | ctl = phydev->drv->config_init(phydev); | |
359 | ||
360 | return ctl; | |
361 | } | |
362 | ||
363 | ||
364 | /* Enable and Restart Autonegotiation */ | |
365 | int genphy_restart_aneg(struct phy_device *phydev) | |
366 | { | |
367 | int ctl; | |
368 | ||
369 | ctl = phy_read(phydev, MII_BMCR); | |
370 | ||
371 | if (ctl < 0) | |
372 | return ctl; | |
373 | ||
374 | ctl |= (BMCR_ANENABLE | BMCR_ANRESTART); | |
375 | ||
376 | /* Don't isolate the PHY if we're negotiating */ | |
377 | ctl &= ~(BMCR_ISOLATE); | |
378 | ||
379 | ctl = phy_write(phydev, MII_BMCR, ctl); | |
380 | ||
381 | return ctl; | |
382 | } | |
383 | ||
384 | ||
385 | /* genphy_config_aneg | |
386 | * | |
387 | * description: If auto-negotiation is enabled, we configure the | |
388 | * advertising, and then restart auto-negotiation. If it is not | |
389 | * enabled, then we write the BMCR | |
390 | */ | |
391 | int genphy_config_aneg(struct phy_device *phydev) | |
392 | { | |
393 | int err = 0; | |
394 | ||
395 | if (AUTONEG_ENABLE == phydev->autoneg) { | |
396 | err = genphy_config_advert(phydev); | |
397 | ||
398 | if (err < 0) | |
399 | return err; | |
400 | ||
401 | err = genphy_restart_aneg(phydev); | |
402 | } else | |
403 | err = genphy_setup_forced(phydev); | |
404 | ||
405 | return err; | |
406 | } | |
407 | EXPORT_SYMBOL(genphy_config_aneg); | |
408 | ||
409 | /* genphy_update_link | |
410 | * | |
411 | * description: Update the value in phydev->link to reflect the | |
412 | * current link value. In order to do this, we need to read | |
413 | * the status register twice, keeping the second value | |
414 | */ | |
415 | int genphy_update_link(struct phy_device *phydev) | |
416 | { | |
417 | int status; | |
418 | ||
419 | /* Do a fake read */ | |
420 | status = phy_read(phydev, MII_BMSR); | |
421 | ||
422 | if (status < 0) | |
423 | return status; | |
424 | ||
425 | /* Read link and autonegotiation status */ | |
426 | status = phy_read(phydev, MII_BMSR); | |
427 | ||
428 | if (status < 0) | |
429 | return status; | |
430 | ||
431 | if ((status & BMSR_LSTATUS) == 0) | |
432 | phydev->link = 0; | |
433 | else | |
434 | phydev->link = 1; | |
435 | ||
436 | return 0; | |
437 | } | |
6b655529 | 438 | EXPORT_SYMBOL(genphy_update_link); |
00db8189 AF |
439 | |
440 | /* genphy_read_status | |
441 | * | |
442 | * description: Check the link, then figure out the current state | |
443 | * by comparing what we advertise with what the link partner | |
444 | * advertises. Start by checking the gigabit possibilities, | |
445 | * then move on to 10/100. | |
446 | */ | |
447 | int genphy_read_status(struct phy_device *phydev) | |
448 | { | |
449 | int adv; | |
450 | int err; | |
451 | int lpa; | |
452 | int lpagb = 0; | |
453 | ||
454 | /* Update the link, but return if there | |
455 | * was an error */ | |
456 | err = genphy_update_link(phydev); | |
457 | if (err) | |
458 | return err; | |
459 | ||
460 | if (AUTONEG_ENABLE == phydev->autoneg) { | |
461 | if (phydev->supported & (SUPPORTED_1000baseT_Half | |
462 | | SUPPORTED_1000baseT_Full)) { | |
463 | lpagb = phy_read(phydev, MII_STAT1000); | |
464 | ||
465 | if (lpagb < 0) | |
466 | return lpagb; | |
467 | ||
468 | adv = phy_read(phydev, MII_CTRL1000); | |
469 | ||
470 | if (adv < 0) | |
471 | return adv; | |
472 | ||
473 | lpagb &= adv << 2; | |
474 | } | |
475 | ||
476 | lpa = phy_read(phydev, MII_LPA); | |
477 | ||
478 | if (lpa < 0) | |
479 | return lpa; | |
480 | ||
481 | adv = phy_read(phydev, MII_ADVERTISE); | |
482 | ||
483 | if (adv < 0) | |
484 | return adv; | |
485 | ||
486 | lpa &= adv; | |
487 | ||
488 | phydev->speed = SPEED_10; | |
489 | phydev->duplex = DUPLEX_HALF; | |
490 | phydev->pause = phydev->asym_pause = 0; | |
491 | ||
492 | if (lpagb & (LPA_1000FULL | LPA_1000HALF)) { | |
493 | phydev->speed = SPEED_1000; | |
494 | ||
495 | if (lpagb & LPA_1000FULL) | |
496 | phydev->duplex = DUPLEX_FULL; | |
497 | } else if (lpa & (LPA_100FULL | LPA_100HALF)) { | |
498 | phydev->speed = SPEED_100; | |
499 | ||
500 | if (lpa & LPA_100FULL) | |
501 | phydev->duplex = DUPLEX_FULL; | |
502 | } else | |
503 | if (lpa & LPA_10FULL) | |
504 | phydev->duplex = DUPLEX_FULL; | |
505 | ||
506 | if (phydev->duplex == DUPLEX_FULL){ | |
507 | phydev->pause = lpa & LPA_PAUSE_CAP ? 1 : 0; | |
508 | phydev->asym_pause = lpa & LPA_PAUSE_ASYM ? 1 : 0; | |
509 | } | |
510 | } else { | |
511 | int bmcr = phy_read(phydev, MII_BMCR); | |
512 | if (bmcr < 0) | |
513 | return bmcr; | |
514 | ||
515 | if (bmcr & BMCR_FULLDPLX) | |
516 | phydev->duplex = DUPLEX_FULL; | |
517 | else | |
518 | phydev->duplex = DUPLEX_HALF; | |
519 | ||
520 | if (bmcr & BMCR_SPEED1000) | |
521 | phydev->speed = SPEED_1000; | |
522 | else if (bmcr & BMCR_SPEED100) | |
523 | phydev->speed = SPEED_100; | |
524 | else | |
525 | phydev->speed = SPEED_10; | |
526 | ||
527 | phydev->pause = phydev->asym_pause = 0; | |
528 | } | |
529 | ||
530 | return 0; | |
531 | } | |
532 | EXPORT_SYMBOL(genphy_read_status); | |
533 | ||
534 | static int genphy_config_init(struct phy_device *phydev) | |
535 | { | |
84c22d79 | 536 | int val; |
00db8189 AF |
537 | u32 features; |
538 | ||
539 | /* For now, I'll claim that the generic driver supports | |
540 | * all possible port types */ | |
541 | features = (SUPPORTED_TP | SUPPORTED_MII | |
542 | | SUPPORTED_AUI | SUPPORTED_FIBRE | | |
543 | SUPPORTED_BNC); | |
544 | ||
545 | /* Do we support autonegotiation? */ | |
546 | val = phy_read(phydev, MII_BMSR); | |
547 | ||
548 | if (val < 0) | |
549 | return val; | |
550 | ||
551 | if (val & BMSR_ANEGCAPABLE) | |
552 | features |= SUPPORTED_Autoneg; | |
553 | ||
554 | if (val & BMSR_100FULL) | |
555 | features |= SUPPORTED_100baseT_Full; | |
556 | if (val & BMSR_100HALF) | |
557 | features |= SUPPORTED_100baseT_Half; | |
558 | if (val & BMSR_10FULL) | |
559 | features |= SUPPORTED_10baseT_Full; | |
560 | if (val & BMSR_10HALF) | |
561 | features |= SUPPORTED_10baseT_Half; | |
562 | ||
563 | if (val & BMSR_ESTATEN) { | |
564 | val = phy_read(phydev, MII_ESTATUS); | |
565 | ||
566 | if (val < 0) | |
567 | return val; | |
568 | ||
569 | if (val & ESTATUS_1000_TFULL) | |
570 | features |= SUPPORTED_1000baseT_Full; | |
571 | if (val & ESTATUS_1000_THALF) | |
572 | features |= SUPPORTED_1000baseT_Half; | |
573 | } | |
574 | ||
575 | phydev->supported = features; | |
576 | phydev->advertising = features; | |
577 | ||
578 | return 0; | |
579 | } | |
580 | ||
581 | ||
582 | /* phy_probe | |
583 | * | |
584 | * description: Take care of setting up the phy_device structure, | |
585 | * set the state to READY (the driver's init function should | |
586 | * set it to STARTING if needed). | |
587 | */ | |
588 | static int phy_probe(struct device *dev) | |
589 | { | |
590 | struct phy_device *phydev; | |
591 | struct phy_driver *phydrv; | |
592 | struct device_driver *drv; | |
593 | int err = 0; | |
594 | ||
595 | phydev = to_phy_device(dev); | |
596 | ||
597 | /* Make sure the driver is held. | |
598 | * XXX -- Is this correct? */ | |
599 | drv = get_driver(phydev->dev.driver); | |
600 | phydrv = to_phy_driver(drv); | |
601 | phydev->drv = phydrv; | |
602 | ||
603 | /* Disable the interrupt if the PHY doesn't support it */ | |
604 | if (!(phydrv->flags & PHY_HAS_INTERRUPT)) | |
605 | phydev->irq = PHY_POLL; | |
606 | ||
607 | spin_lock(&phydev->lock); | |
608 | ||
609 | /* Start out supporting everything. Eventually, | |
610 | * a controller will attach, and may modify one | |
611 | * or both of these values */ | |
612 | phydev->supported = phydrv->features; | |
613 | phydev->advertising = phydrv->features; | |
614 | ||
615 | /* Set the state to READY by default */ | |
616 | phydev->state = PHY_READY; | |
617 | ||
618 | if (phydev->drv->probe) | |
619 | err = phydev->drv->probe(phydev); | |
620 | ||
621 | spin_unlock(&phydev->lock); | |
622 | ||
00db8189 | 623 | return err; |
e8a2b6a4 | 624 | |
00db8189 AF |
625 | } |
626 | ||
627 | static int phy_remove(struct device *dev) | |
628 | { | |
629 | struct phy_device *phydev; | |
630 | ||
631 | phydev = to_phy_device(dev); | |
632 | ||
633 | spin_lock(&phydev->lock); | |
634 | phydev->state = PHY_DOWN; | |
635 | spin_unlock(&phydev->lock); | |
636 | ||
637 | if (phydev->drv->remove) | |
638 | phydev->drv->remove(phydev); | |
639 | ||
640 | put_driver(dev->driver); | |
641 | phydev->drv = NULL; | |
642 | ||
643 | return 0; | |
644 | } | |
645 | ||
646 | int phy_driver_register(struct phy_driver *new_driver) | |
647 | { | |
648 | int retval; | |
649 | ||
650 | memset(&new_driver->driver, 0, sizeof(new_driver->driver)); | |
651 | new_driver->driver.name = new_driver->name; | |
652 | new_driver->driver.bus = &mdio_bus_type; | |
653 | new_driver->driver.probe = phy_probe; | |
654 | new_driver->driver.remove = phy_remove; | |
655 | ||
656 | retval = driver_register(&new_driver->driver); | |
657 | ||
658 | if (retval) { | |
659 | printk(KERN_ERR "%s: Error %d in registering driver\n", | |
660 | new_driver->name, retval); | |
661 | ||
662 | return retval; | |
663 | } | |
664 | ||
665 | pr_info("%s: Registered new driver\n", new_driver->name); | |
666 | ||
667 | return 0; | |
668 | } | |
669 | EXPORT_SYMBOL(phy_driver_register); | |
670 | ||
671 | void phy_driver_unregister(struct phy_driver *drv) | |
672 | { | |
673 | driver_unregister(&drv->driver); | |
674 | } | |
675 | EXPORT_SYMBOL(phy_driver_unregister); | |
676 | ||
e1393456 AF |
677 | static struct phy_driver genphy_driver = { |
678 | .phy_id = 0xffffffff, | |
679 | .phy_id_mask = 0xffffffff, | |
680 | .name = "Generic PHY", | |
681 | .config_init = genphy_config_init, | |
682 | .features = 0, | |
683 | .config_aneg = genphy_config_aneg, | |
684 | .read_status = genphy_read_status, | |
685 | .driver = {.owner= THIS_MODULE, }, | |
686 | }; | |
00db8189 | 687 | |
67c4f3fa | 688 | static int __init phy_init(void) |
00db8189 | 689 | { |
67c4f3fa | 690 | int rc; |
67c4f3fa JG |
691 | |
692 | rc = mdio_bus_init(); | |
693 | if (rc) | |
e1393456 | 694 | return rc; |
00db8189 | 695 | |
e1393456 AF |
696 | rc = phy_driver_register(&genphy_driver); |
697 | if (rc) | |
698 | mdio_bus_exit(); | |
67c4f3fa | 699 | |
67c4f3fa | 700 | return rc; |
00db8189 AF |
701 | } |
702 | ||
67c4f3fa | 703 | static void __exit phy_exit(void) |
00db8189 AF |
704 | { |
705 | phy_driver_unregister(&genphy_driver); | |
e1393456 | 706 | mdio_bus_exit(); |
00db8189 AF |
707 | } |
708 | ||
e1393456 | 709 | subsys_initcall(phy_init); |
67c4f3fa | 710 | module_exit(phy_exit); |