Commit | Line | Data |
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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 | */ | |
8d242488 JP |
17 | |
18 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt | |
19 | ||
00db8189 | 20 | #include <linux/kernel.h> |
00db8189 AF |
21 | #include <linux/string.h> |
22 | #include <linux/errno.h> | |
23 | #include <linux/unistd.h> | |
24 | #include <linux/slab.h> | |
25 | #include <linux/interrupt.h> | |
26 | #include <linux/init.h> | |
27 | #include <linux/delay.h> | |
28 | #include <linux/netdevice.h> | |
29 | #include <linux/etherdevice.h> | |
30 | #include <linux/skbuff.h> | |
00db8189 AF |
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 | ||
afcceaa3 OH |
41 | MODULE_DESCRIPTION("PHY library"); |
42 | MODULE_AUTHOR("Andy Fleming"); | |
43 | MODULE_LICENSE("GPL"); | |
44 | ||
6f4a7f41 AV |
45 | void phy_device_free(struct phy_device *phydev) |
46 | { | |
47 | kfree(phydev); | |
48 | } | |
4dea547f | 49 | EXPORT_SYMBOL(phy_device_free); |
6f4a7f41 AV |
50 | |
51 | static void phy_device_release(struct device *dev) | |
52 | { | |
53 | phy_device_free(to_phy_device(dev)); | |
54 | } | |
55 | ||
4dea547f GL |
56 | static struct phy_driver genphy_driver; |
57 | extern int mdio_bus_init(void); | |
58 | extern void mdio_bus_exit(void); | |
59 | ||
f62220d3 AF |
60 | static LIST_HEAD(phy_fixup_list); |
61 | static DEFINE_MUTEX(phy_fixup_lock); | |
62 | ||
89ff05ec | 63 | static int phy_attach_direct(struct net_device *dev, struct phy_device *phydev, |
64 | u32 flags, phy_interface_t interface); | |
65 | ||
f62220d3 AF |
66 | /* |
67 | * Creates a new phy_fixup and adds it to the list | |
68 | * @bus_id: A string which matches phydev->dev.bus_id (or PHY_ANY_ID) | |
69 | * @phy_uid: Used to match against phydev->phy_id (the UID of the PHY) | |
70 | * It can also be PHY_ANY_UID | |
71 | * @phy_uid_mask: Applied to phydev->phy_id and fixup->phy_uid before | |
72 | * comparison | |
73 | * @run: The actual code to be run when a matching PHY is found | |
74 | */ | |
75 | int phy_register_fixup(const char *bus_id, u32 phy_uid, u32 phy_uid_mask, | |
76 | int (*run)(struct phy_device *)) | |
77 | { | |
78 | struct phy_fixup *fixup; | |
79 | ||
80 | fixup = kzalloc(sizeof(struct phy_fixup), GFP_KERNEL); | |
81 | if (!fixup) | |
82 | return -ENOMEM; | |
83 | ||
fb28ad35 | 84 | strlcpy(fixup->bus_id, bus_id, sizeof(fixup->bus_id)); |
f62220d3 AF |
85 | fixup->phy_uid = phy_uid; |
86 | fixup->phy_uid_mask = phy_uid_mask; | |
87 | fixup->run = run; | |
88 | ||
89 | mutex_lock(&phy_fixup_lock); | |
90 | list_add_tail(&fixup->list, &phy_fixup_list); | |
91 | mutex_unlock(&phy_fixup_lock); | |
92 | ||
93 | return 0; | |
94 | } | |
95 | EXPORT_SYMBOL(phy_register_fixup); | |
96 | ||
97 | /* Registers a fixup to be run on any PHY with the UID in phy_uid */ | |
98 | int phy_register_fixup_for_uid(u32 phy_uid, u32 phy_uid_mask, | |
99 | int (*run)(struct phy_device *)) | |
100 | { | |
101 | return phy_register_fixup(PHY_ANY_ID, phy_uid, phy_uid_mask, run); | |
102 | } | |
103 | EXPORT_SYMBOL(phy_register_fixup_for_uid); | |
104 | ||
105 | /* Registers a fixup to be run on the PHY with id string bus_id */ | |
106 | int phy_register_fixup_for_id(const char *bus_id, | |
107 | int (*run)(struct phy_device *)) | |
108 | { | |
109 | return phy_register_fixup(bus_id, PHY_ANY_UID, 0xffffffff, run); | |
110 | } | |
111 | EXPORT_SYMBOL(phy_register_fixup_for_id); | |
112 | ||
113 | /* | |
114 | * Returns 1 if fixup matches phydev in bus_id and phy_uid. | |
115 | * Fixups can be set to match any in one or more fields. | |
116 | */ | |
117 | static int phy_needs_fixup(struct phy_device *phydev, struct phy_fixup *fixup) | |
118 | { | |
fb28ad35 | 119 | if (strcmp(fixup->bus_id, dev_name(&phydev->dev)) != 0) |
f62220d3 AF |
120 | if (strcmp(fixup->bus_id, PHY_ANY_ID) != 0) |
121 | return 0; | |
122 | ||
123 | if ((fixup->phy_uid & fixup->phy_uid_mask) != | |
124 | (phydev->phy_id & fixup->phy_uid_mask)) | |
125 | if (fixup->phy_uid != PHY_ANY_UID) | |
126 | return 0; | |
127 | ||
128 | return 1; | |
129 | } | |
130 | ||
131 | /* Runs any matching fixups for this phydev */ | |
132 | int phy_scan_fixups(struct phy_device *phydev) | |
133 | { | |
134 | struct phy_fixup *fixup; | |
135 | ||
136 | mutex_lock(&phy_fixup_lock); | |
137 | list_for_each_entry(fixup, &phy_fixup_list, list) { | |
138 | if (phy_needs_fixup(phydev, fixup)) { | |
139 | int err; | |
140 | ||
141 | err = fixup->run(phydev); | |
142 | ||
bc23283c JS |
143 | if (err < 0) { |
144 | mutex_unlock(&phy_fixup_lock); | |
f62220d3 | 145 | return err; |
bc23283c | 146 | } |
f62220d3 AF |
147 | } |
148 | } | |
149 | mutex_unlock(&phy_fixup_lock); | |
150 | ||
151 | return 0; | |
152 | } | |
153 | EXPORT_SYMBOL(phy_scan_fixups); | |
154 | ||
ac28b9f8 DD |
155 | struct phy_device *phy_device_create(struct mii_bus *bus, int addr, int phy_id, |
156 | bool is_c45, struct phy_c45_device_ids *c45_ids) | |
11b0bacd VB |
157 | { |
158 | struct phy_device *dev; | |
8626d3b4 | 159 | |
11b0bacd VB |
160 | /* We allocate the device, and initialize the |
161 | * default values */ | |
cd861280 | 162 | dev = kzalloc(sizeof(*dev), GFP_KERNEL); |
11b0bacd VB |
163 | |
164 | if (NULL == dev) | |
165 | return (struct phy_device*) PTR_ERR((void*)-ENOMEM); | |
166 | ||
6f4a7f41 AV |
167 | dev->dev.release = phy_device_release; |
168 | ||
11b0bacd VB |
169 | dev->speed = 0; |
170 | dev->duplex = -1; | |
171 | dev->pause = dev->asym_pause = 0; | |
172 | dev->link = 1; | |
e8a2b6a4 | 173 | dev->interface = PHY_INTERFACE_MODE_GMII; |
11b0bacd VB |
174 | |
175 | dev->autoneg = AUTONEG_ENABLE; | |
176 | ||
ac28b9f8 | 177 | dev->is_c45 = is_c45; |
11b0bacd VB |
178 | dev->addr = addr; |
179 | dev->phy_id = phy_id; | |
ac28b9f8 DD |
180 | if (c45_ids) |
181 | dev->c45_ids = *c45_ids; | |
11b0bacd | 182 | dev->bus = bus; |
4dea547f GL |
183 | dev->dev.parent = bus->parent; |
184 | dev->dev.bus = &mdio_bus_type; | |
185 | dev->irq = bus->irq != NULL ? bus->irq[addr] : PHY_POLL; | |
186 | dev_set_name(&dev->dev, PHY_ID_FMT, bus->id, addr); | |
11b0bacd VB |
187 | |
188 | dev->state = PHY_DOWN; | |
189 | ||
35b5f6b1 | 190 | mutex_init(&dev->lock); |
4f9c85a1 | 191 | INIT_DELAYED_WORK(&dev->state_queue, phy_state_machine); |
11b0bacd | 192 | |
8626d3b4 DW |
193 | /* Request the appropriate module unconditionally; don't |
194 | bother trying to do so only if it isn't already loaded, | |
195 | because that gets complicated. A hotplug event would have | |
196 | done an unconditional modprobe anyway. | |
197 | We don't do normal hotplug because it won't work for MDIO | |
198 | -- because it relies on the device staying around for long | |
199 | enough for the driver to get loaded. With MDIO, the NIC | |
200 | driver will get bored and give up as soon as it finds that | |
201 | there's no driver _already_ loaded. */ | |
202 | request_module(MDIO_MODULE_PREFIX MDIO_ID_FMT, MDIO_ID_ARGS(phy_id)); | |
203 | ||
11b0bacd VB |
204 | return dev; |
205 | } | |
ac28b9f8 DD |
206 | EXPORT_SYMBOL(phy_device_create); |
207 | ||
208 | /** | |
209 | * get_phy_c45_ids - reads the specified addr for its 802.3-c45 IDs. | |
210 | * @bus: the target MII bus | |
211 | * @addr: PHY address on the MII bus | |
212 | * @phy_id: where to store the ID retrieved. | |
213 | * @c45_ids: where to store the c45 ID information. | |
214 | * | |
215 | * If the PHY devices-in-package appears to be valid, it and the | |
216 | * corresponding identifiers are stored in @c45_ids, zero is stored | |
217 | * in @phy_id. Otherwise 0xffffffff is stored in @phy_id. Returns | |
218 | * zero on success. | |
219 | * | |
220 | */ | |
221 | static int get_phy_c45_ids(struct mii_bus *bus, int addr, u32 *phy_id, | |
222 | struct phy_c45_device_ids *c45_ids) { | |
223 | int phy_reg; | |
224 | int i, reg_addr; | |
225 | const int num_ids = ARRAY_SIZE(c45_ids->device_ids); | |
226 | ||
227 | /* Find first non-zero Devices In package. Device | |
228 | * zero is reserved, so don't probe it. | |
229 | */ | |
230 | for (i = 1; | |
231 | i < num_ids && c45_ids->devices_in_package == 0; | |
232 | i++) { | |
233 | reg_addr = MII_ADDR_C45 | i << 16 | 6; | |
234 | phy_reg = mdiobus_read(bus, addr, reg_addr); | |
235 | if (phy_reg < 0) | |
236 | return -EIO; | |
237 | c45_ids->devices_in_package = (phy_reg & 0xffff) << 16; | |
238 | ||
239 | reg_addr = MII_ADDR_C45 | i << 16 | 5; | |
240 | phy_reg = mdiobus_read(bus, addr, reg_addr); | |
241 | if (phy_reg < 0) | |
242 | return -EIO; | |
243 | c45_ids->devices_in_package |= (phy_reg & 0xffff); | |
244 | ||
245 | /* If mostly Fs, there is no device there, | |
246 | * let's get out of here. | |
247 | */ | |
248 | if ((c45_ids->devices_in_package & 0x1fffffff) == 0x1fffffff) { | |
249 | *phy_id = 0xffffffff; | |
250 | return 0; | |
251 | } | |
252 | } | |
253 | ||
254 | /* Now probe Device Identifiers for each device present. */ | |
255 | for (i = 1; i < num_ids; i++) { | |
256 | if (!(c45_ids->devices_in_package & (1 << i))) | |
257 | continue; | |
258 | ||
259 | reg_addr = MII_ADDR_C45 | i << 16 | MII_PHYSID1; | |
260 | phy_reg = mdiobus_read(bus, addr, reg_addr); | |
261 | if (phy_reg < 0) | |
262 | return -EIO; | |
263 | c45_ids->device_ids[i] = (phy_reg & 0xffff) << 16; | |
264 | ||
265 | reg_addr = MII_ADDR_C45 | i << 16 | MII_PHYSID2; | |
266 | phy_reg = mdiobus_read(bus, addr, reg_addr); | |
267 | if (phy_reg < 0) | |
268 | return -EIO; | |
269 | c45_ids->device_ids[i] |= (phy_reg & 0xffff); | |
270 | } | |
271 | *phy_id = 0; | |
272 | return 0; | |
273 | } | |
11b0bacd | 274 | |
b3df0da8 | 275 | /** |
cac1f3c8 | 276 | * get_phy_id - reads the specified addr for its ID. |
b3df0da8 RD |
277 | * @bus: the target MII bus |
278 | * @addr: PHY address on the MII bus | |
cac1f3c8 | 279 | * @phy_id: where to store the ID retrieved. |
ac28b9f8 DD |
280 | * @is_c45: If true the PHY uses the 802.3 clause 45 protocol |
281 | * @c45_ids: where to store the c45 ID information. | |
282 | * | |
283 | * Description: In the case of a 802.3-c22 PHY, reads the ID registers | |
284 | * of the PHY at @addr on the @bus, stores it in @phy_id and returns | |
285 | * zero on success. | |
286 | * | |
287 | * In the case of a 802.3-c45 PHY, get_phy_c45_ids() is invoked, and | |
288 | * its return value is in turn returned. | |
00db8189 | 289 | * |
00db8189 | 290 | */ |
ac28b9f8 DD |
291 | static int get_phy_id(struct mii_bus *bus, int addr, u32 *phy_id, |
292 | bool is_c45, struct phy_c45_device_ids *c45_ids) | |
00db8189 AF |
293 | { |
294 | int phy_reg; | |
00db8189 | 295 | |
ac28b9f8 DD |
296 | if (is_c45) |
297 | return get_phy_c45_ids(bus, addr, phy_id, c45_ids); | |
298 | ||
00db8189 AF |
299 | /* Grab the bits from PHYIR1, and put them |
300 | * in the upper half */ | |
6fe32649 | 301 | phy_reg = mdiobus_read(bus, addr, MII_PHYSID1); |
00db8189 AF |
302 | |
303 | if (phy_reg < 0) | |
cac1f3c8 | 304 | return -EIO; |
00db8189 | 305 | |
cac1f3c8 | 306 | *phy_id = (phy_reg & 0xffff) << 16; |
00db8189 AF |
307 | |
308 | /* Grab the bits from PHYIR2, and put them in the lower half */ | |
6fe32649 | 309 | phy_reg = mdiobus_read(bus, addr, MII_PHYSID2); |
00db8189 AF |
310 | |
311 | if (phy_reg < 0) | |
cac1f3c8 PG |
312 | return -EIO; |
313 | ||
314 | *phy_id |= (phy_reg & 0xffff); | |
315 | ||
316 | return 0; | |
317 | } | |
318 | ||
319 | /** | |
320 | * get_phy_device - reads the specified PHY device and returns its @phy_device struct | |
321 | * @bus: the target MII bus | |
322 | * @addr: PHY address on the MII bus | |
ac28b9f8 | 323 | * @is_c45: If true the PHY uses the 802.3 clause 45 protocol |
cac1f3c8 PG |
324 | * |
325 | * Description: Reads the ID registers of the PHY at @addr on the | |
326 | * @bus, then allocates and returns the phy_device to represent it. | |
327 | */ | |
ac28b9f8 | 328 | struct phy_device *get_phy_device(struct mii_bus *bus, int addr, bool is_c45) |
cac1f3c8 | 329 | { |
ac28b9f8 | 330 | struct phy_c45_device_ids c45_ids = {0}; |
160c85f0 DM |
331 | struct phy_device *dev = NULL; |
332 | u32 phy_id = 0; | |
cac1f3c8 | 333 | int r; |
00db8189 | 334 | |
ac28b9f8 | 335 | r = get_phy_id(bus, addr, &phy_id, is_c45, &c45_ids); |
cac1f3c8 PG |
336 | if (r) |
337 | return ERR_PTR(r); | |
00db8189 | 338 | |
6436cbcd GC |
339 | /* If the phy_id is mostly Fs, there is no device there */ |
340 | if ((phy_id & 0x1fffffff) == 0x1fffffff) | |
341 | return NULL; | |
342 | ||
ac28b9f8 | 343 | dev = phy_device_create(bus, addr, phy_id, is_c45, &c45_ids); |
00db8189 AF |
344 | |
345 | return dev; | |
346 | } | |
4dea547f GL |
347 | EXPORT_SYMBOL(get_phy_device); |
348 | ||
349 | /** | |
350 | * phy_device_register - Register the phy device on the MDIO bus | |
1d4ac5d5 | 351 | * @phydev: phy_device structure to be added to the MDIO bus |
4dea547f GL |
352 | */ |
353 | int phy_device_register(struct phy_device *phydev) | |
354 | { | |
355 | int err; | |
356 | ||
357 | /* Don't register a phy if one is already registered at this | |
358 | * address */ | |
359 | if (phydev->bus->phy_map[phydev->addr]) | |
360 | return -EINVAL; | |
361 | phydev->bus->phy_map[phydev->addr] = phydev; | |
362 | ||
363 | /* Run all of the fixups for this PHY */ | |
364 | phy_scan_fixups(phydev); | |
365 | ||
366 | err = device_register(&phydev->dev); | |
367 | if (err) { | |
368 | pr_err("phy %d failed to register\n", phydev->addr); | |
369 | goto out; | |
370 | } | |
371 | ||
372 | return 0; | |
373 | ||
374 | out: | |
375 | phydev->bus->phy_map[phydev->addr] = NULL; | |
376 | return err; | |
377 | } | |
378 | EXPORT_SYMBOL(phy_device_register); | |
00db8189 | 379 | |
f8f76db1 JP |
380 | /** |
381 | * phy_find_first - finds the first PHY device on the bus | |
382 | * @bus: the target MII bus | |
383 | */ | |
384 | struct phy_device *phy_find_first(struct mii_bus *bus) | |
385 | { | |
386 | int addr; | |
387 | ||
388 | for (addr = 0; addr < PHY_MAX_ADDR; addr++) { | |
389 | if (bus->phy_map[addr]) | |
390 | return bus->phy_map[addr]; | |
391 | } | |
392 | return NULL; | |
393 | } | |
394 | EXPORT_SYMBOL(phy_find_first); | |
395 | ||
b3df0da8 RD |
396 | /** |
397 | * phy_prepare_link - prepares the PHY layer to monitor link status | |
398 | * @phydev: target phy_device struct | |
399 | * @handler: callback function for link status change notifications | |
00db8189 | 400 | * |
b3df0da8 | 401 | * Description: Tells the PHY infrastructure to handle the |
00db8189 AF |
402 | * gory details on monitoring link status (whether through |
403 | * polling or an interrupt), and to call back to the | |
404 | * connected device driver when the link status changes. | |
405 | * If you want to monitor your own link state, don't call | |
b3df0da8 RD |
406 | * this function. |
407 | */ | |
89ff05ec | 408 | static void phy_prepare_link(struct phy_device *phydev, |
00db8189 AF |
409 | void (*handler)(struct net_device *)) |
410 | { | |
411 | phydev->adjust_link = handler; | |
412 | } | |
413 | ||
fa94f6d9 GL |
414 | /** |
415 | * phy_connect_direct - connect an ethernet device to a specific phy_device | |
416 | * @dev: the network device to connect | |
417 | * @phydev: the pointer to the phy device | |
418 | * @handler: callback function for state change notifications | |
419 | * @flags: PHY device's dev_flags | |
420 | * @interface: PHY device's interface | |
421 | */ | |
422 | int phy_connect_direct(struct net_device *dev, struct phy_device *phydev, | |
423 | void (*handler)(struct net_device *), u32 flags, | |
424 | phy_interface_t interface) | |
425 | { | |
426 | int rc; | |
427 | ||
428 | rc = phy_attach_direct(dev, phydev, flags, interface); | |
429 | if (rc) | |
430 | return rc; | |
431 | ||
432 | phy_prepare_link(phydev, handler); | |
433 | phy_start_machine(phydev, NULL); | |
434 | if (phydev->irq > 0) | |
435 | phy_start_interrupts(phydev); | |
436 | ||
437 | return 0; | |
438 | } | |
439 | EXPORT_SYMBOL(phy_connect_direct); | |
440 | ||
b3df0da8 RD |
441 | /** |
442 | * phy_connect - connect an ethernet device to a PHY device | |
443 | * @dev: the network device to connect | |
5d12b132 | 444 | * @bus_id: the id string of the PHY device to connect |
b3df0da8 RD |
445 | * @handler: callback function for state change notifications |
446 | * @flags: PHY device's dev_flags | |
447 | * @interface: PHY device's interface | |
e1393456 | 448 | * |
b3df0da8 | 449 | * Description: Convenience function for connecting ethernet |
e1393456 AF |
450 | * devices to PHY devices. The default behavior is for |
451 | * the PHY infrastructure to handle everything, and only notify | |
452 | * the connected driver when the link status changes. If you | |
453 | * don't want, or can't use the provided functionality, you may | |
454 | * choose to call only the subset of functions which provide | |
455 | * the desired functionality. | |
456 | */ | |
f62220d3 | 457 | struct phy_device * phy_connect(struct net_device *dev, const char *bus_id, |
e8a2b6a4 | 458 | void (*handler)(struct net_device *), u32 flags, |
1a168934 | 459 | phy_interface_t interface) |
e1393456 AF |
460 | { |
461 | struct phy_device *phydev; | |
fa94f6d9 GL |
462 | struct device *d; |
463 | int rc; | |
e1393456 | 464 | |
fa94f6d9 GL |
465 | /* Search the list of PHY devices on the mdio bus for the |
466 | * PHY with the requested name */ | |
467 | d = bus_find_device_by_name(&mdio_bus_type, NULL, bus_id); | |
468 | if (!d) { | |
469 | pr_err("PHY %s not found\n", bus_id); | |
470 | return ERR_PTR(-ENODEV); | |
471 | } | |
472 | phydev = to_phy_device(d); | |
e1393456 | 473 | |
fa94f6d9 GL |
474 | rc = phy_connect_direct(dev, phydev, handler, flags, interface); |
475 | if (rc) | |
476 | return ERR_PTR(rc); | |
e1393456 AF |
477 | |
478 | return phydev; | |
479 | } | |
480 | EXPORT_SYMBOL(phy_connect); | |
481 | ||
b3df0da8 RD |
482 | /** |
483 | * phy_disconnect - disable interrupts, stop state machine, and detach a PHY device | |
484 | * @phydev: target phy_device struct | |
485 | */ | |
e1393456 AF |
486 | void phy_disconnect(struct phy_device *phydev) |
487 | { | |
488 | if (phydev->irq > 0) | |
489 | phy_stop_interrupts(phydev); | |
490 | ||
491 | phy_stop_machine(phydev); | |
492 | ||
493 | phydev->adjust_link = NULL; | |
494 | ||
495 | phy_detach(phydev); | |
496 | } | |
497 | EXPORT_SYMBOL(phy_disconnect); | |
498 | ||
2f5cb434 AV |
499 | int phy_init_hw(struct phy_device *phydev) |
500 | { | |
501 | int ret; | |
502 | ||
503 | if (!phydev->drv || !phydev->drv->config_init) | |
504 | return 0; | |
505 | ||
506 | ret = phy_scan_fixups(phydev); | |
507 | if (ret < 0) | |
508 | return ret; | |
509 | ||
510 | return phydev->drv->config_init(phydev); | |
511 | } | |
512 | ||
b3df0da8 | 513 | /** |
fa94f6d9 | 514 | * phy_attach_direct - attach a network device to a given PHY device pointer |
b3df0da8 | 515 | * @dev: network device to attach |
fa94f6d9 | 516 | * @phydev: Pointer to phy_device to attach |
b3df0da8 RD |
517 | * @flags: PHY device's dev_flags |
518 | * @interface: PHY device's interface | |
e1393456 | 519 | * |
b3df0da8 | 520 | * Description: Called by drivers to attach to a particular PHY |
e1393456 AF |
521 | * device. The phy_device is found, and properly hooked up |
522 | * to the phy_driver. If no driver is attached, then the | |
523 | * genphy_driver is used. The phy_device is given a ptr to | |
524 | * the attaching device, and given a callback for link status | |
b3df0da8 | 525 | * change. The phy_device is returned to the attaching driver. |
e1393456 | 526 | */ |
89ff05ec | 527 | static int phy_attach_direct(struct net_device *dev, struct phy_device *phydev, |
528 | u32 flags, phy_interface_t interface) | |
e1393456 | 529 | { |
fa94f6d9 | 530 | struct device *d = &phydev->dev; |
d005a09e | 531 | int err; |
e1393456 AF |
532 | |
533 | /* Assume that if there is no driver, that it doesn't | |
534 | * exist, and we should use the genphy driver. */ | |
535 | if (NULL == d->driver) { | |
ac28b9f8 DD |
536 | if (phydev->is_c45) { |
537 | pr_err("No driver for phy %x\n", phydev->phy_id); | |
538 | return -ENODEV; | |
539 | } | |
540 | ||
e1393456 AF |
541 | d->driver = &genphy_driver.driver; |
542 | ||
543 | err = d->driver->probe(d); | |
b7a00ecd JG |
544 | if (err >= 0) |
545 | err = device_bind_driver(d); | |
e1393456 | 546 | |
b7a00ecd | 547 | if (err) |
fa94f6d9 | 548 | return err; |
e1393456 AF |
549 | } |
550 | ||
551 | if (phydev->attached_dev) { | |
fa94f6d9 GL |
552 | dev_err(&dev->dev, "PHY already attached\n"); |
553 | return -EBUSY; | |
e1393456 AF |
554 | } |
555 | ||
556 | phydev->attached_dev = dev; | |
c1f19b51 | 557 | dev->phydev = phydev; |
e1393456 AF |
558 | |
559 | phydev->dev_flags = flags; | |
560 | ||
e8a2b6a4 AF |
561 | phydev->interface = interface; |
562 | ||
ef24b16b AV |
563 | phydev->state = PHY_READY; |
564 | ||
e8a2b6a4 AF |
565 | /* Do initial configuration here, now that |
566 | * we have certain key parameters | |
567 | * (dev_flags and interface) */ | |
d005a09e MKB |
568 | err = phy_init_hw(phydev); |
569 | if (err) | |
570 | phy_detach(phydev); | |
571 | ||
572 | return err; | |
fa94f6d9 | 573 | } |
fa94f6d9 GL |
574 | |
575 | /** | |
576 | * phy_attach - attach a network device to a particular PHY device | |
577 | * @dev: network device to attach | |
578 | * @bus_id: Bus ID of PHY device to attach | |
579 | * @flags: PHY device's dev_flags | |
580 | * @interface: PHY device's interface | |
581 | * | |
582 | * Description: Same as phy_attach_direct() except that a PHY bus_id | |
583 | * string is passed instead of a pointer to a struct phy_device. | |
584 | */ | |
585 | struct phy_device *phy_attach(struct net_device *dev, | |
586 | const char *bus_id, u32 flags, phy_interface_t interface) | |
587 | { | |
588 | struct bus_type *bus = &mdio_bus_type; | |
589 | struct phy_device *phydev; | |
590 | struct device *d; | |
591 | int rc; | |
592 | ||
593 | /* Search the list of PHY devices on the mdio bus for the | |
594 | * PHY with the requested name */ | |
595 | d = bus_find_device_by_name(bus, NULL, bus_id); | |
596 | if (!d) { | |
597 | pr_err("PHY %s not found\n", bus_id); | |
598 | return ERR_PTR(-ENODEV); | |
e8a2b6a4 | 599 | } |
fa94f6d9 GL |
600 | phydev = to_phy_device(d); |
601 | ||
602 | rc = phy_attach_direct(dev, phydev, flags, interface); | |
603 | if (rc) | |
604 | return ERR_PTR(rc); | |
e8a2b6a4 | 605 | |
e1393456 AF |
606 | return phydev; |
607 | } | |
608 | EXPORT_SYMBOL(phy_attach); | |
609 | ||
b3df0da8 RD |
610 | /** |
611 | * phy_detach - detach a PHY device from its network device | |
612 | * @phydev: target phy_device struct | |
613 | */ | |
e1393456 AF |
614 | void phy_detach(struct phy_device *phydev) |
615 | { | |
c1f19b51 | 616 | phydev->attached_dev->phydev = NULL; |
e1393456 AF |
617 | phydev->attached_dev = NULL; |
618 | ||
619 | /* If the device had no specific driver before (i.e. - it | |
620 | * was using the generic driver), we unbind the device | |
621 | * from the generic driver so that there's a chance a | |
622 | * real driver could be loaded */ | |
87aebe07 | 623 | if (phydev->dev.driver == &genphy_driver.driver) |
e1393456 | 624 | device_release_driver(&phydev->dev); |
e1393456 AF |
625 | } |
626 | EXPORT_SYMBOL(phy_detach); | |
627 | ||
628 | ||
00db8189 AF |
629 | /* Generic PHY support and helper functions */ |
630 | ||
b3df0da8 | 631 | /** |
25985edc | 632 | * genphy_config_advert - sanitize and advertise auto-negotiation parameters |
b3df0da8 | 633 | * @phydev: target phy_device struct |
00db8189 | 634 | * |
b3df0da8 | 635 | * Description: Writes MII_ADVERTISE with the appropriate values, |
00db8189 | 636 | * after sanitizing the values to make sure we only advertise |
51e2a384 TP |
637 | * what is supported. Returns < 0 on error, 0 if the PHY's advertisement |
638 | * hasn't changed, and > 0 if it has changed. | |
00db8189 | 639 | */ |
89ff05ec | 640 | static int genphy_config_advert(struct phy_device *phydev) |
00db8189 AF |
641 | { |
642 | u32 advertise; | |
51e2a384 TP |
643 | int oldadv, adv; |
644 | int err, changed = 0; | |
00db8189 AF |
645 | |
646 | /* Only allow advertising what | |
647 | * this PHY supports */ | |
648 | phydev->advertising &= phydev->supported; | |
649 | advertise = phydev->advertising; | |
650 | ||
651 | /* Setup standard advertisement */ | |
51e2a384 | 652 | oldadv = adv = phy_read(phydev, MII_ADVERTISE); |
00db8189 AF |
653 | |
654 | if (adv < 0) | |
655 | return adv; | |
656 | ||
28011cf1 | 657 | adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4 | ADVERTISE_PAUSE_CAP | |
00db8189 | 658 | ADVERTISE_PAUSE_ASYM); |
37f07023 | 659 | adv |= ethtool_adv_to_mii_adv_t(advertise); |
00db8189 | 660 | |
51e2a384 TP |
661 | if (adv != oldadv) { |
662 | err = phy_write(phydev, MII_ADVERTISE, adv); | |
00db8189 | 663 | |
51e2a384 TP |
664 | if (err < 0) |
665 | return err; | |
666 | changed = 1; | |
667 | } | |
00db8189 AF |
668 | |
669 | /* Configure gigabit if it's supported */ | |
670 | if (phydev->supported & (SUPPORTED_1000baseT_Half | | |
671 | SUPPORTED_1000baseT_Full)) { | |
51e2a384 | 672 | oldadv = adv = phy_read(phydev, MII_CTRL1000); |
00db8189 AF |
673 | |
674 | if (adv < 0) | |
675 | return adv; | |
676 | ||
677 | adv &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF); | |
37f07023 | 678 | adv |= ethtool_adv_to_mii_ctrl1000_t(advertise); |
00db8189 | 679 | |
51e2a384 TP |
680 | if (adv != oldadv) { |
681 | err = phy_write(phydev, MII_CTRL1000, adv); | |
682 | ||
683 | if (err < 0) | |
684 | return err; | |
685 | changed = 1; | |
686 | } | |
00db8189 AF |
687 | } |
688 | ||
51e2a384 | 689 | return changed; |
00db8189 | 690 | } |
00db8189 | 691 | |
b3df0da8 RD |
692 | /** |
693 | * genphy_setup_forced - configures/forces speed/duplex from @phydev | |
694 | * @phydev: target phy_device struct | |
00db8189 | 695 | * |
b3df0da8 | 696 | * Description: Configures MII_BMCR to force speed/duplex |
00db8189 | 697 | * to the values in phydev. Assumes that the values are valid. |
b3df0da8 RD |
698 | * Please see phy_sanitize_settings(). |
699 | */ | |
89ff05ec | 700 | static int genphy_setup_forced(struct phy_device *phydev) |
00db8189 | 701 | { |
f62220d3 | 702 | int err; |
bc1e0a09 | 703 | int ctl = 0; |
00db8189 AF |
704 | |
705 | phydev->pause = phydev->asym_pause = 0; | |
706 | ||
707 | if (SPEED_1000 == phydev->speed) | |
708 | ctl |= BMCR_SPEED1000; | |
709 | else if (SPEED_100 == phydev->speed) | |
710 | ctl |= BMCR_SPEED100; | |
711 | ||
712 | if (DUPLEX_FULL == phydev->duplex) | |
713 | ctl |= BMCR_FULLDPLX; | |
714 | ||
f62220d3 | 715 | err = phy_write(phydev, MII_BMCR, ctl); |
00db8189 | 716 | |
f62220d3 | 717 | return err; |
00db8189 AF |
718 | } |
719 | ||
720 | ||
b3df0da8 RD |
721 | /** |
722 | * genphy_restart_aneg - Enable and Restart Autonegotiation | |
723 | * @phydev: target phy_device struct | |
724 | */ | |
00db8189 AF |
725 | int genphy_restart_aneg(struct phy_device *phydev) |
726 | { | |
727 | int ctl; | |
728 | ||
729 | ctl = phy_read(phydev, MII_BMCR); | |
730 | ||
731 | if (ctl < 0) | |
732 | return ctl; | |
733 | ||
734 | ctl |= (BMCR_ANENABLE | BMCR_ANRESTART); | |
735 | ||
736 | /* Don't isolate the PHY if we're negotiating */ | |
737 | ctl &= ~(BMCR_ISOLATE); | |
738 | ||
739 | ctl = phy_write(phydev, MII_BMCR, ctl); | |
740 | ||
741 | return ctl; | |
742 | } | |
892871dc | 743 | EXPORT_SYMBOL(genphy_restart_aneg); |
00db8189 AF |
744 | |
745 | ||
b3df0da8 RD |
746 | /** |
747 | * genphy_config_aneg - restart auto-negotiation or write BMCR | |
748 | * @phydev: target phy_device struct | |
00db8189 | 749 | * |
b3df0da8 | 750 | * Description: If auto-negotiation is enabled, we configure the |
00db8189 | 751 | * advertising, and then restart auto-negotiation. If it is not |
b3df0da8 | 752 | * enabled, then we write the BMCR. |
00db8189 AF |
753 | */ |
754 | int genphy_config_aneg(struct phy_device *phydev) | |
755 | { | |
de339c2a | 756 | int result; |
00db8189 | 757 | |
de339c2a TP |
758 | if (AUTONEG_ENABLE != phydev->autoneg) |
759 | return genphy_setup_forced(phydev); | |
00db8189 | 760 | |
de339c2a | 761 | result = genphy_config_advert(phydev); |
00db8189 | 762 | |
de339c2a TP |
763 | if (result < 0) /* error */ |
764 | return result; | |
765 | ||
766 | if (result == 0) { | |
25985edc | 767 | /* Advertisement hasn't changed, but maybe aneg was never on to |
de339c2a TP |
768 | * begin with? Or maybe phy was isolated? */ |
769 | int ctl = phy_read(phydev, MII_BMCR); | |
770 | ||
771 | if (ctl < 0) | |
772 | return ctl; | |
773 | ||
774 | if (!(ctl & BMCR_ANENABLE) || (ctl & BMCR_ISOLATE)) | |
775 | result = 1; /* do restart aneg */ | |
776 | } | |
777 | ||
778 | /* Only restart aneg if we are advertising something different | |
779 | * than we were before. */ | |
780 | if (result > 0) | |
781 | result = genphy_restart_aneg(phydev); | |
00db8189 | 782 | |
51e2a384 | 783 | return result; |
00db8189 AF |
784 | } |
785 | EXPORT_SYMBOL(genphy_config_aneg); | |
786 | ||
b3df0da8 RD |
787 | /** |
788 | * genphy_update_link - update link status in @phydev | |
789 | * @phydev: target phy_device struct | |
00db8189 | 790 | * |
b3df0da8 | 791 | * Description: Update the value in phydev->link to reflect the |
00db8189 | 792 | * current link value. In order to do this, we need to read |
b3df0da8 | 793 | * the status register twice, keeping the second value. |
00db8189 AF |
794 | */ |
795 | int genphy_update_link(struct phy_device *phydev) | |
796 | { | |
797 | int status; | |
798 | ||
799 | /* Do a fake read */ | |
800 | status = phy_read(phydev, MII_BMSR); | |
801 | ||
802 | if (status < 0) | |
803 | return status; | |
804 | ||
805 | /* Read link and autonegotiation status */ | |
806 | status = phy_read(phydev, MII_BMSR); | |
807 | ||
808 | if (status < 0) | |
809 | return status; | |
810 | ||
811 | if ((status & BMSR_LSTATUS) == 0) | |
812 | phydev->link = 0; | |
813 | else | |
814 | phydev->link = 1; | |
815 | ||
816 | return 0; | |
817 | } | |
6b655529 | 818 | EXPORT_SYMBOL(genphy_update_link); |
00db8189 | 819 | |
b3df0da8 RD |
820 | /** |
821 | * genphy_read_status - check the link status and update current link state | |
822 | * @phydev: target phy_device struct | |
00db8189 | 823 | * |
b3df0da8 | 824 | * Description: Check the link, then figure out the current state |
00db8189 AF |
825 | * by comparing what we advertise with what the link partner |
826 | * advertises. Start by checking the gigabit possibilities, | |
827 | * then move on to 10/100. | |
828 | */ | |
829 | int genphy_read_status(struct phy_device *phydev) | |
830 | { | |
831 | int adv; | |
832 | int err; | |
833 | int lpa; | |
834 | int lpagb = 0; | |
835 | ||
836 | /* Update the link, but return if there | |
837 | * was an error */ | |
838 | err = genphy_update_link(phydev); | |
839 | if (err) | |
840 | return err; | |
841 | ||
842 | if (AUTONEG_ENABLE == phydev->autoneg) { | |
843 | if (phydev->supported & (SUPPORTED_1000baseT_Half | |
844 | | SUPPORTED_1000baseT_Full)) { | |
845 | lpagb = phy_read(phydev, MII_STAT1000); | |
846 | ||
847 | if (lpagb < 0) | |
848 | return lpagb; | |
849 | ||
850 | adv = phy_read(phydev, MII_CTRL1000); | |
851 | ||
852 | if (adv < 0) | |
853 | return adv; | |
854 | ||
855 | lpagb &= adv << 2; | |
856 | } | |
857 | ||
858 | lpa = phy_read(phydev, MII_LPA); | |
859 | ||
860 | if (lpa < 0) | |
861 | return lpa; | |
862 | ||
863 | adv = phy_read(phydev, MII_ADVERTISE); | |
864 | ||
865 | if (adv < 0) | |
866 | return adv; | |
867 | ||
868 | lpa &= adv; | |
869 | ||
870 | phydev->speed = SPEED_10; | |
871 | phydev->duplex = DUPLEX_HALF; | |
872 | phydev->pause = phydev->asym_pause = 0; | |
873 | ||
874 | if (lpagb & (LPA_1000FULL | LPA_1000HALF)) { | |
875 | phydev->speed = SPEED_1000; | |
876 | ||
877 | if (lpagb & LPA_1000FULL) | |
878 | phydev->duplex = DUPLEX_FULL; | |
879 | } else if (lpa & (LPA_100FULL | LPA_100HALF)) { | |
880 | phydev->speed = SPEED_100; | |
881 | ||
882 | if (lpa & LPA_100FULL) | |
883 | phydev->duplex = DUPLEX_FULL; | |
884 | } else | |
885 | if (lpa & LPA_10FULL) | |
886 | phydev->duplex = DUPLEX_FULL; | |
887 | ||
888 | if (phydev->duplex == DUPLEX_FULL){ | |
889 | phydev->pause = lpa & LPA_PAUSE_CAP ? 1 : 0; | |
890 | phydev->asym_pause = lpa & LPA_PAUSE_ASYM ? 1 : 0; | |
891 | } | |
892 | } else { | |
893 | int bmcr = phy_read(phydev, MII_BMCR); | |
894 | if (bmcr < 0) | |
895 | return bmcr; | |
896 | ||
897 | if (bmcr & BMCR_FULLDPLX) | |
898 | phydev->duplex = DUPLEX_FULL; | |
899 | else | |
900 | phydev->duplex = DUPLEX_HALF; | |
901 | ||
902 | if (bmcr & BMCR_SPEED1000) | |
903 | phydev->speed = SPEED_1000; | |
904 | else if (bmcr & BMCR_SPEED100) | |
905 | phydev->speed = SPEED_100; | |
906 | else | |
907 | phydev->speed = SPEED_10; | |
908 | ||
909 | phydev->pause = phydev->asym_pause = 0; | |
910 | } | |
911 | ||
912 | return 0; | |
913 | } | |
914 | EXPORT_SYMBOL(genphy_read_status); | |
915 | ||
916 | static int genphy_config_init(struct phy_device *phydev) | |
917 | { | |
84c22d79 | 918 | int val; |
00db8189 AF |
919 | u32 features; |
920 | ||
921 | /* For now, I'll claim that the generic driver supports | |
922 | * all possible port types */ | |
923 | features = (SUPPORTED_TP | SUPPORTED_MII | |
924 | | SUPPORTED_AUI | SUPPORTED_FIBRE | | |
925 | SUPPORTED_BNC); | |
926 | ||
927 | /* Do we support autonegotiation? */ | |
928 | val = phy_read(phydev, MII_BMSR); | |
929 | ||
930 | if (val < 0) | |
931 | return val; | |
932 | ||
933 | if (val & BMSR_ANEGCAPABLE) | |
934 | features |= SUPPORTED_Autoneg; | |
935 | ||
936 | if (val & BMSR_100FULL) | |
937 | features |= SUPPORTED_100baseT_Full; | |
938 | if (val & BMSR_100HALF) | |
939 | features |= SUPPORTED_100baseT_Half; | |
940 | if (val & BMSR_10FULL) | |
941 | features |= SUPPORTED_10baseT_Full; | |
942 | if (val & BMSR_10HALF) | |
943 | features |= SUPPORTED_10baseT_Half; | |
944 | ||
945 | if (val & BMSR_ESTATEN) { | |
946 | val = phy_read(phydev, MII_ESTATUS); | |
947 | ||
948 | if (val < 0) | |
949 | return val; | |
950 | ||
951 | if (val & ESTATUS_1000_TFULL) | |
952 | features |= SUPPORTED_1000baseT_Full; | |
953 | if (val & ESTATUS_1000_THALF) | |
954 | features |= SUPPORTED_1000baseT_Half; | |
955 | } | |
956 | ||
957 | phydev->supported = features; | |
958 | phydev->advertising = features; | |
959 | ||
960 | return 0; | |
961 | } | |
0f0ca340 GC |
962 | int genphy_suspend(struct phy_device *phydev) |
963 | { | |
964 | int value; | |
965 | ||
966 | mutex_lock(&phydev->lock); | |
967 | ||
968 | value = phy_read(phydev, MII_BMCR); | |
969 | phy_write(phydev, MII_BMCR, (value | BMCR_PDOWN)); | |
970 | ||
971 | mutex_unlock(&phydev->lock); | |
972 | ||
973 | return 0; | |
974 | } | |
975 | EXPORT_SYMBOL(genphy_suspend); | |
00db8189 | 976 | |
0f0ca340 GC |
977 | int genphy_resume(struct phy_device *phydev) |
978 | { | |
979 | int value; | |
980 | ||
981 | mutex_lock(&phydev->lock); | |
982 | ||
983 | value = phy_read(phydev, MII_BMCR); | |
984 | phy_write(phydev, MII_BMCR, (value & ~BMCR_PDOWN)); | |
985 | ||
986 | mutex_unlock(&phydev->lock); | |
987 | ||
988 | return 0; | |
989 | } | |
990 | EXPORT_SYMBOL(genphy_resume); | |
00db8189 | 991 | |
b3df0da8 RD |
992 | /** |
993 | * phy_probe - probe and init a PHY device | |
994 | * @dev: device to probe and init | |
00db8189 | 995 | * |
b3df0da8 | 996 | * Description: Take care of setting up the phy_device structure, |
00db8189 AF |
997 | * set the state to READY (the driver's init function should |
998 | * set it to STARTING if needed). | |
999 | */ | |
1000 | static int phy_probe(struct device *dev) | |
1001 | { | |
1002 | struct phy_device *phydev; | |
1003 | struct phy_driver *phydrv; | |
1004 | struct device_driver *drv; | |
1005 | int err = 0; | |
1006 | ||
1007 | phydev = to_phy_device(dev); | |
1008 | ||
f3ff9247 | 1009 | drv = phydev->dev.driver; |
00db8189 AF |
1010 | phydrv = to_phy_driver(drv); |
1011 | phydev->drv = phydrv; | |
1012 | ||
1013 | /* Disable the interrupt if the PHY doesn't support it */ | |
1014 | if (!(phydrv->flags & PHY_HAS_INTERRUPT)) | |
1015 | phydev->irq = PHY_POLL; | |
1016 | ||
35b5f6b1 | 1017 | mutex_lock(&phydev->lock); |
00db8189 AF |
1018 | |
1019 | /* Start out supporting everything. Eventually, | |
1020 | * a controller will attach, and may modify one | |
1021 | * or both of these values */ | |
1022 | phydev->supported = phydrv->features; | |
1023 | phydev->advertising = phydrv->features; | |
1024 | ||
1025 | /* Set the state to READY by default */ | |
1026 | phydev->state = PHY_READY; | |
1027 | ||
1028 | if (phydev->drv->probe) | |
1029 | err = phydev->drv->probe(phydev); | |
1030 | ||
35b5f6b1 | 1031 | mutex_unlock(&phydev->lock); |
00db8189 | 1032 | |
00db8189 | 1033 | return err; |
e8a2b6a4 | 1034 | |
00db8189 AF |
1035 | } |
1036 | ||
1037 | static int phy_remove(struct device *dev) | |
1038 | { | |
1039 | struct phy_device *phydev; | |
1040 | ||
1041 | phydev = to_phy_device(dev); | |
1042 | ||
35b5f6b1 | 1043 | mutex_lock(&phydev->lock); |
00db8189 | 1044 | phydev->state = PHY_DOWN; |
35b5f6b1 | 1045 | mutex_unlock(&phydev->lock); |
00db8189 AF |
1046 | |
1047 | if (phydev->drv->remove) | |
1048 | phydev->drv->remove(phydev); | |
00db8189 AF |
1049 | phydev->drv = NULL; |
1050 | ||
1051 | return 0; | |
1052 | } | |
1053 | ||
b3df0da8 RD |
1054 | /** |
1055 | * phy_driver_register - register a phy_driver with the PHY layer | |
1056 | * @new_driver: new phy_driver to register | |
1057 | */ | |
00db8189 AF |
1058 | int phy_driver_register(struct phy_driver *new_driver) |
1059 | { | |
1060 | int retval; | |
1061 | ||
00db8189 AF |
1062 | new_driver->driver.name = new_driver->name; |
1063 | new_driver->driver.bus = &mdio_bus_type; | |
1064 | new_driver->driver.probe = phy_probe; | |
1065 | new_driver->driver.remove = phy_remove; | |
1066 | ||
1067 | retval = driver_register(&new_driver->driver); | |
1068 | ||
1069 | if (retval) { | |
8d242488 JP |
1070 | pr_err("%s: Error %d in registering driver\n", |
1071 | new_driver->name, retval); | |
00db8189 AF |
1072 | |
1073 | return retval; | |
1074 | } | |
1075 | ||
f2511f13 | 1076 | pr_debug("%s: Registered new driver\n", new_driver->name); |
00db8189 AF |
1077 | |
1078 | return 0; | |
1079 | } | |
1080 | EXPORT_SYMBOL(phy_driver_register); | |
1081 | ||
d5bf9071 CH |
1082 | int phy_drivers_register(struct phy_driver *new_driver, int n) |
1083 | { | |
1084 | int i, ret = 0; | |
1085 | ||
1086 | for (i = 0; i < n; i++) { | |
1087 | ret = phy_driver_register(new_driver + i); | |
1088 | if (ret) { | |
1089 | while (i-- > 0) | |
1090 | phy_driver_unregister(new_driver + i); | |
1091 | break; | |
1092 | } | |
1093 | } | |
1094 | return ret; | |
1095 | } | |
1096 | EXPORT_SYMBOL(phy_drivers_register); | |
1097 | ||
00db8189 AF |
1098 | void phy_driver_unregister(struct phy_driver *drv) |
1099 | { | |
1100 | driver_unregister(&drv->driver); | |
1101 | } | |
1102 | EXPORT_SYMBOL(phy_driver_unregister); | |
1103 | ||
d5bf9071 CH |
1104 | void phy_drivers_unregister(struct phy_driver *drv, int n) |
1105 | { | |
1106 | int i; | |
1107 | for (i = 0; i < n; i++) { | |
1108 | phy_driver_unregister(drv + i); | |
1109 | } | |
1110 | } | |
1111 | EXPORT_SYMBOL(phy_drivers_unregister); | |
1112 | ||
e1393456 AF |
1113 | static struct phy_driver genphy_driver = { |
1114 | .phy_id = 0xffffffff, | |
1115 | .phy_id_mask = 0xffffffff, | |
1116 | .name = "Generic PHY", | |
1117 | .config_init = genphy_config_init, | |
1118 | .features = 0, | |
1119 | .config_aneg = genphy_config_aneg, | |
1120 | .read_status = genphy_read_status, | |
0f0ca340 GC |
1121 | .suspend = genphy_suspend, |
1122 | .resume = genphy_resume, | |
e1393456 AF |
1123 | .driver = {.owner= THIS_MODULE, }, |
1124 | }; | |
00db8189 | 1125 | |
67c4f3fa | 1126 | static int __init phy_init(void) |
00db8189 | 1127 | { |
67c4f3fa | 1128 | int rc; |
67c4f3fa JG |
1129 | |
1130 | rc = mdio_bus_init(); | |
1131 | if (rc) | |
e1393456 | 1132 | return rc; |
00db8189 | 1133 | |
e1393456 AF |
1134 | rc = phy_driver_register(&genphy_driver); |
1135 | if (rc) | |
1136 | mdio_bus_exit(); | |
67c4f3fa | 1137 | |
67c4f3fa | 1138 | return rc; |
00db8189 AF |
1139 | } |
1140 | ||
67c4f3fa | 1141 | static void __exit phy_exit(void) |
00db8189 AF |
1142 | { |
1143 | phy_driver_unregister(&genphy_driver); | |
e1393456 | 1144 | mdio_bus_exit(); |
00db8189 AF |
1145 | } |
1146 | ||
e1393456 | 1147 | subsys_initcall(phy_init); |
67c4f3fa | 1148 | module_exit(phy_exit); |