Commit | Line | Data |
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2f53e904 | 1 | /* Framework for finding and configuring PHYs. |
00db8189 AF |
2 | * Also contains generic PHY driver |
3 | * | |
4 | * Author: Andy Fleming | |
5 | * | |
6 | * Copyright (c) 2004 Freescale Semiconductor, Inc. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify it | |
9 | * under the terms of the GNU General Public License as published by the | |
10 | * Free Software Foundation; either version 2 of the License, or (at your | |
11 | * option) any later version. | |
12 | * | |
13 | */ | |
8d242488 JP |
14 | |
15 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt | |
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> | |
00db8189 AF |
28 | #include <linux/mm.h> |
29 | #include <linux/module.h> | |
00db8189 AF |
30 | #include <linux/mii.h> |
31 | #include <linux/ethtool.h> | |
32 | #include <linux/phy.h> | |
124059fd | 33 | #include <linux/mdio.h> |
2f53e904 SS |
34 | #include <linux/io.h> |
35 | #include <linux/uaccess.h> | |
de906af1 | 36 | #include <linux/of.h> |
00db8189 | 37 | |
00db8189 | 38 | #include <asm/irq.h> |
00db8189 | 39 | |
afcceaa3 OH |
40 | MODULE_DESCRIPTION("PHY library"); |
41 | MODULE_AUTHOR("Andy Fleming"); | |
42 | MODULE_LICENSE("GPL"); | |
43 | ||
6f4a7f41 AV |
44 | void phy_device_free(struct phy_device *phydev) |
45 | { | |
e5a03bfd | 46 | put_device(&phydev->mdio.dev); |
6f4a7f41 | 47 | } |
4dea547f | 48 | EXPORT_SYMBOL(phy_device_free); |
6f4a7f41 AV |
49 | |
50 | static void phy_device_release(struct device *dev) | |
51 | { | |
b2a43191 | 52 | kfree(to_phy_device(dev)); |
6f4a7f41 AV |
53 | } |
54 | ||
ab2145ed SX |
55 | enum genphy_driver { |
56 | GENPHY_DRV_1G, | |
124059fd | 57 | GENPHY_DRV_10G, |
ab2145ed SX |
58 | GENPHY_DRV_MAX |
59 | }; | |
60 | ||
61 | static struct phy_driver genphy_driver[GENPHY_DRV_MAX]; | |
4dea547f | 62 | |
f62220d3 AF |
63 | static LIST_HEAD(phy_fixup_list); |
64 | static DEFINE_MUTEX(phy_fixup_lock); | |
65 | ||
2f53e904 SS |
66 | /** |
67 | * phy_register_fixup - creates a new phy_fixup and adds it to the list | |
e5a03bfd | 68 | * @bus_id: A string which matches phydev->mdio.dev.bus_id (or PHY_ANY_ID) |
f62220d3 | 69 | * @phy_uid: Used to match against phydev->phy_id (the UID of the PHY) |
2f53e904 | 70 | * It can also be PHY_ANY_UID |
f62220d3 | 71 | * @phy_uid_mask: Applied to phydev->phy_id and fixup->phy_uid before |
2f53e904 | 72 | * comparison |
f62220d3 AF |
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, | |
2f53e904 | 76 | int (*run)(struct phy_device *)) |
f62220d3 | 77 | { |
553fe92b | 78 | struct phy_fixup *fixup = kzalloc(sizeof(*fixup), GFP_KERNEL); |
f62220d3 | 79 | |
f62220d3 AF |
80 | if (!fixup) |
81 | return -ENOMEM; | |
82 | ||
fb28ad35 | 83 | strlcpy(fixup->bus_id, bus_id, sizeof(fixup->bus_id)); |
f62220d3 AF |
84 | fixup->phy_uid = phy_uid; |
85 | fixup->phy_uid_mask = phy_uid_mask; | |
86 | fixup->run = run; | |
87 | ||
88 | mutex_lock(&phy_fixup_lock); | |
89 | list_add_tail(&fixup->list, &phy_fixup_list); | |
90 | mutex_unlock(&phy_fixup_lock); | |
91 | ||
92 | return 0; | |
93 | } | |
94 | EXPORT_SYMBOL(phy_register_fixup); | |
95 | ||
96 | /* Registers a fixup to be run on any PHY with the UID in phy_uid */ | |
97 | int phy_register_fixup_for_uid(u32 phy_uid, u32 phy_uid_mask, | |
2f53e904 | 98 | int (*run)(struct phy_device *)) |
f62220d3 AF |
99 | { |
100 | return phy_register_fixup(PHY_ANY_ID, phy_uid, phy_uid_mask, run); | |
101 | } | |
102 | EXPORT_SYMBOL(phy_register_fixup_for_uid); | |
103 | ||
104 | /* Registers a fixup to be run on the PHY with id string bus_id */ | |
105 | int phy_register_fixup_for_id(const char *bus_id, | |
2f53e904 | 106 | int (*run)(struct phy_device *)) |
f62220d3 AF |
107 | { |
108 | return phy_register_fixup(bus_id, PHY_ANY_UID, 0xffffffff, run); | |
109 | } | |
110 | EXPORT_SYMBOL(phy_register_fixup_for_id); | |
111 | ||
2f53e904 | 112 | /* Returns 1 if fixup matches phydev in bus_id and phy_uid. |
f62220d3 AF |
113 | * Fixups can be set to match any in one or more fields. |
114 | */ | |
115 | static int phy_needs_fixup(struct phy_device *phydev, struct phy_fixup *fixup) | |
116 | { | |
84eff6d1 | 117 | if (strcmp(fixup->bus_id, phydev_name(phydev)) != 0) |
f62220d3 AF |
118 | if (strcmp(fixup->bus_id, PHY_ANY_ID) != 0) |
119 | return 0; | |
120 | ||
121 | if ((fixup->phy_uid & fixup->phy_uid_mask) != | |
2f53e904 | 122 | (phydev->phy_id & fixup->phy_uid_mask)) |
f62220d3 AF |
123 | if (fixup->phy_uid != PHY_ANY_UID) |
124 | return 0; | |
125 | ||
126 | return 1; | |
127 | } | |
128 | ||
129 | /* Runs any matching fixups for this phydev */ | |
fbfcec63 | 130 | static int phy_scan_fixups(struct phy_device *phydev) |
f62220d3 AF |
131 | { |
132 | struct phy_fixup *fixup; | |
133 | ||
134 | mutex_lock(&phy_fixup_lock); | |
135 | list_for_each_entry(fixup, &phy_fixup_list, list) { | |
136 | if (phy_needs_fixup(phydev, fixup)) { | |
553fe92b | 137 | int err = fixup->run(phydev); |
f62220d3 | 138 | |
bc23283c JS |
139 | if (err < 0) { |
140 | mutex_unlock(&phy_fixup_lock); | |
f62220d3 | 141 | return err; |
bc23283c | 142 | } |
b0ae009f | 143 | phydev->has_fixups = true; |
f62220d3 AF |
144 | } |
145 | } | |
146 | mutex_unlock(&phy_fixup_lock); | |
147 | ||
148 | return 0; | |
149 | } | |
f62220d3 | 150 | |
ac28b9f8 | 151 | struct phy_device *phy_device_create(struct mii_bus *bus, int addr, int phy_id, |
2f53e904 SS |
152 | bool is_c45, |
153 | struct phy_c45_device_ids *c45_ids) | |
11b0bacd VB |
154 | { |
155 | struct phy_device *dev; | |
e5a03bfd | 156 | struct mdio_device *mdiodev; |
8626d3b4 | 157 | |
2f53e904 | 158 | /* We allocate the device, and initialize the default values */ |
cd861280 | 159 | dev = kzalloc(sizeof(*dev), GFP_KERNEL); |
ef899c07 | 160 | if (!dev) |
d3765f08 | 161 | return ERR_PTR(-ENOMEM); |
11b0bacd | 162 | |
e5a03bfd AL |
163 | mdiodev = &dev->mdio; |
164 | mdiodev->dev.release = phy_device_release; | |
165 | mdiodev->dev.parent = &bus->dev; | |
166 | mdiodev->dev.bus = &mdio_bus_type; | |
167 | mdiodev->bus = bus; | |
168 | mdiodev->addr = addr; | |
6f4a7f41 | 169 | |
11b0bacd VB |
170 | dev->speed = 0; |
171 | dev->duplex = -1; | |
2f53e904 SS |
172 | dev->pause = 0; |
173 | dev->asym_pause = 0; | |
11b0bacd | 174 | dev->link = 1; |
e8a2b6a4 | 175 | dev->interface = PHY_INTERFACE_MODE_GMII; |
11b0bacd VB |
176 | |
177 | dev->autoneg = AUTONEG_ENABLE; | |
178 | ||
ac28b9f8 | 179 | dev->is_c45 = is_c45; |
11b0bacd | 180 | dev->phy_id = phy_id; |
ac28b9f8 DD |
181 | if (c45_ids) |
182 | dev->c45_ids = *c45_ids; | |
ef899c07 | 183 | dev->irq = bus->irq ? bus->irq[addr] : PHY_POLL; |
e5a03bfd | 184 | dev_set_name(&mdiodev->dev, PHY_ID_FMT, bus->id, addr); |
11b0bacd VB |
185 | |
186 | dev->state = PHY_DOWN; | |
187 | ||
35b5f6b1 | 188 | mutex_init(&dev->lock); |
4f9c85a1 | 189 | INIT_DELAYED_WORK(&dev->state_queue, phy_state_machine); |
5ea94e76 | 190 | INIT_WORK(&dev->phy_queue, phy_change); |
11b0bacd | 191 | |
8626d3b4 | 192 | /* Request the appropriate module unconditionally; don't |
2f53e904 SS |
193 | * bother trying to do so only if it isn't already loaded, |
194 | * because that gets complicated. A hotplug event would have | |
195 | * done an unconditional modprobe anyway. | |
196 | * We don't do normal hotplug because it won't work for MDIO | |
197 | * -- because it relies on the device staying around for long | |
198 | * enough for the driver to get loaded. With MDIO, the NIC | |
199 | * driver will get bored and give up as soon as it finds that | |
200 | * there's no driver _already_ loaded. | |
201 | */ | |
8626d3b4 DW |
202 | request_module(MDIO_MODULE_PREFIX MDIO_ID_FMT, MDIO_ID_ARGS(phy_id)); |
203 | ||
e5a03bfd | 204 | device_initialize(&mdiodev->dev); |
b2a43191 | 205 | |
11b0bacd VB |
206 | return dev; |
207 | } | |
ac28b9f8 DD |
208 | EXPORT_SYMBOL(phy_device_create); |
209 | ||
5f6c99e0 SX |
210 | /* get_phy_c45_devs_in_pkg - reads a MMD's devices in package registers. |
211 | * @bus: the target MII bus | |
212 | * @addr: PHY address on the MII bus | |
213 | * @dev_addr: MMD address in the PHY. | |
214 | * @devices_in_package: where to store the devices in package information. | |
215 | * | |
216 | * Description: reads devices in package registers of a MMD at @dev_addr | |
217 | * from PHY at @addr on @bus. | |
218 | * | |
219 | * Returns: 0 on success, -EIO on failure. | |
220 | */ | |
221 | static int get_phy_c45_devs_in_pkg(struct mii_bus *bus, int addr, int dev_addr, | |
222 | u32 *devices_in_package) | |
223 | { | |
224 | int phy_reg, reg_addr; | |
225 | ||
226 | reg_addr = MII_ADDR_C45 | dev_addr << 16 | MDIO_DEVS2; | |
227 | phy_reg = mdiobus_read(bus, addr, reg_addr); | |
228 | if (phy_reg < 0) | |
229 | return -EIO; | |
230 | *devices_in_package = (phy_reg & 0xffff) << 16; | |
231 | ||
232 | reg_addr = MII_ADDR_C45 | dev_addr << 16 | MDIO_DEVS1; | |
233 | phy_reg = mdiobus_read(bus, addr, reg_addr); | |
234 | if (phy_reg < 0) | |
235 | return -EIO; | |
236 | *devices_in_package |= (phy_reg & 0xffff); | |
237 | ||
238 | return 0; | |
239 | } | |
240 | ||
ac28b9f8 DD |
241 | /** |
242 | * get_phy_c45_ids - reads the specified addr for its 802.3-c45 IDs. | |
243 | * @bus: the target MII bus | |
244 | * @addr: PHY address on the MII bus | |
245 | * @phy_id: where to store the ID retrieved. | |
246 | * @c45_ids: where to store the c45 ID information. | |
247 | * | |
248 | * If the PHY devices-in-package appears to be valid, it and the | |
249 | * corresponding identifiers are stored in @c45_ids, zero is stored | |
250 | * in @phy_id. Otherwise 0xffffffff is stored in @phy_id. Returns | |
251 | * zero on success. | |
252 | * | |
253 | */ | |
254 | static int get_phy_c45_ids(struct mii_bus *bus, int addr, u32 *phy_id, | |
255 | struct phy_c45_device_ids *c45_ids) { | |
256 | int phy_reg; | |
257 | int i, reg_addr; | |
258 | const int num_ids = ARRAY_SIZE(c45_ids->device_ids); | |
5f6c99e0 | 259 | u32 *devs = &c45_ids->devices_in_package; |
ac28b9f8 | 260 | |
5f6c99e0 SX |
261 | /* Find first non-zero Devices In package. Device zero is reserved |
262 | * for 802.3 c45 complied PHYs, so don't probe it at first. | |
ac28b9f8 | 263 | */ |
5f6c99e0 SX |
264 | for (i = 1; i < num_ids && *devs == 0; i++) { |
265 | phy_reg = get_phy_c45_devs_in_pkg(bus, addr, i, devs); | |
ac28b9f8 DD |
266 | if (phy_reg < 0) |
267 | return -EIO; | |
ac28b9f8 | 268 | |
5f6c99e0 SX |
269 | if ((*devs & 0x1fffffff) == 0x1fffffff) { |
270 | /* If mostly Fs, there is no device there, | |
271 | * then let's continue to probe more, as some | |
272 | * 10G PHYs have zero Devices In package, | |
273 | * e.g. Cortina CS4315/CS4340 PHY. | |
274 | */ | |
275 | phy_reg = get_phy_c45_devs_in_pkg(bus, addr, 0, devs); | |
276 | if (phy_reg < 0) | |
277 | return -EIO; | |
278 | /* no device there, let's get out of here */ | |
279 | if ((*devs & 0x1fffffff) == 0x1fffffff) { | |
da1da284 SL |
280 | *phy_id = 0xffffffff; |
281 | return 0; | |
5f6c99e0 SX |
282 | } else { |
283 | break; | |
da1da284 | 284 | } |
ac28b9f8 DD |
285 | } |
286 | } | |
287 | ||
288 | /* Now probe Device Identifiers for each device present. */ | |
289 | for (i = 1; i < num_ids; i++) { | |
290 | if (!(c45_ids->devices_in_package & (1 << i))) | |
291 | continue; | |
292 | ||
293 | reg_addr = MII_ADDR_C45 | i << 16 | MII_PHYSID1; | |
294 | phy_reg = mdiobus_read(bus, addr, reg_addr); | |
295 | if (phy_reg < 0) | |
296 | return -EIO; | |
297 | c45_ids->device_ids[i] = (phy_reg & 0xffff) << 16; | |
298 | ||
299 | reg_addr = MII_ADDR_C45 | i << 16 | MII_PHYSID2; | |
300 | phy_reg = mdiobus_read(bus, addr, reg_addr); | |
301 | if (phy_reg < 0) | |
302 | return -EIO; | |
303 | c45_ids->device_ids[i] |= (phy_reg & 0xffff); | |
304 | } | |
305 | *phy_id = 0; | |
306 | return 0; | |
307 | } | |
11b0bacd | 308 | |
b3df0da8 | 309 | /** |
cac1f3c8 | 310 | * get_phy_id - reads the specified addr for its ID. |
b3df0da8 RD |
311 | * @bus: the target MII bus |
312 | * @addr: PHY address on the MII bus | |
cac1f3c8 | 313 | * @phy_id: where to store the ID retrieved. |
ac28b9f8 DD |
314 | * @is_c45: If true the PHY uses the 802.3 clause 45 protocol |
315 | * @c45_ids: where to store the c45 ID information. | |
316 | * | |
317 | * Description: In the case of a 802.3-c22 PHY, reads the ID registers | |
318 | * of the PHY at @addr on the @bus, stores it in @phy_id and returns | |
319 | * zero on success. | |
320 | * | |
321 | * In the case of a 802.3-c45 PHY, get_phy_c45_ids() is invoked, and | |
322 | * its return value is in turn returned. | |
00db8189 | 323 | * |
00db8189 | 324 | */ |
ac28b9f8 DD |
325 | static int get_phy_id(struct mii_bus *bus, int addr, u32 *phy_id, |
326 | bool is_c45, struct phy_c45_device_ids *c45_ids) | |
00db8189 AF |
327 | { |
328 | int phy_reg; | |
00db8189 | 329 | |
ac28b9f8 DD |
330 | if (is_c45) |
331 | return get_phy_c45_ids(bus, addr, phy_id, c45_ids); | |
332 | ||
2f53e904 | 333 | /* Grab the bits from PHYIR1, and put them in the upper half */ |
6fe32649 | 334 | phy_reg = mdiobus_read(bus, addr, MII_PHYSID1); |
00db8189 | 335 | if (phy_reg < 0) |
cac1f3c8 | 336 | return -EIO; |
00db8189 | 337 | |
cac1f3c8 | 338 | *phy_id = (phy_reg & 0xffff) << 16; |
00db8189 AF |
339 | |
340 | /* Grab the bits from PHYIR2, and put them in the lower half */ | |
6fe32649 | 341 | phy_reg = mdiobus_read(bus, addr, MII_PHYSID2); |
00db8189 | 342 | if (phy_reg < 0) |
cac1f3c8 PG |
343 | return -EIO; |
344 | ||
345 | *phy_id |= (phy_reg & 0xffff); | |
346 | ||
347 | return 0; | |
348 | } | |
349 | ||
350 | /** | |
2f53e904 SS |
351 | * get_phy_device - reads the specified PHY device and returns its @phy_device |
352 | * struct | |
cac1f3c8 PG |
353 | * @bus: the target MII bus |
354 | * @addr: PHY address on the MII bus | |
ac28b9f8 | 355 | * @is_c45: If true the PHY uses the 802.3 clause 45 protocol |
cac1f3c8 PG |
356 | * |
357 | * Description: Reads the ID registers of the PHY at @addr on the | |
358 | * @bus, then allocates and returns the phy_device to represent it. | |
359 | */ | |
ac28b9f8 | 360 | struct phy_device *get_phy_device(struct mii_bus *bus, int addr, bool is_c45) |
cac1f3c8 | 361 | { |
ac28b9f8 | 362 | struct phy_c45_device_ids c45_ids = {0}; |
160c85f0 | 363 | u32 phy_id = 0; |
cac1f3c8 | 364 | int r; |
00db8189 | 365 | |
ac28b9f8 | 366 | r = get_phy_id(bus, addr, &phy_id, is_c45, &c45_ids); |
cac1f3c8 PG |
367 | if (r) |
368 | return ERR_PTR(r); | |
00db8189 | 369 | |
6436cbcd GC |
370 | /* If the phy_id is mostly Fs, there is no device there */ |
371 | if ((phy_id & 0x1fffffff) == 0x1fffffff) | |
372 | return NULL; | |
373 | ||
e62a768f | 374 | return phy_device_create(bus, addr, phy_id, is_c45, &c45_ids); |
00db8189 | 375 | } |
4dea547f GL |
376 | EXPORT_SYMBOL(get_phy_device); |
377 | ||
378 | /** | |
379 | * phy_device_register - Register the phy device on the MDIO bus | |
1d4ac5d5 | 380 | * @phydev: phy_device structure to be added to the MDIO bus |
4dea547f GL |
381 | */ |
382 | int phy_device_register(struct phy_device *phydev) | |
383 | { | |
384 | int err; | |
385 | ||
2f53e904 | 386 | /* Don't register a phy if one is already registered at this address */ |
e5a03bfd | 387 | if (phydev->mdio.bus->phy_map[phydev->mdio.addr]) |
4dea547f | 388 | return -EINVAL; |
e5a03bfd | 389 | phydev->mdio.bus->phy_map[phydev->mdio.addr] = phydev; |
4dea547f GL |
390 | |
391 | /* Run all of the fixups for this PHY */ | |
d92f5dec | 392 | err = phy_scan_fixups(phydev); |
87aa9f9c | 393 | if (err) { |
e5a03bfd | 394 | pr_err("PHY %d failed to initialize\n", phydev->mdio.addr); |
87aa9f9c FF |
395 | goto out; |
396 | } | |
4dea547f | 397 | |
e5a03bfd | 398 | err = device_add(&phydev->mdio.dev); |
4dea547f | 399 | if (err) { |
e5a03bfd | 400 | pr_err("PHY %d failed to add\n", phydev->mdio.addr); |
4dea547f GL |
401 | goto out; |
402 | } | |
403 | ||
404 | return 0; | |
405 | ||
406 | out: | |
e5a03bfd | 407 | phydev->mdio.bus->phy_map[phydev->mdio.addr] = NULL; |
4dea547f GL |
408 | return err; |
409 | } | |
410 | EXPORT_SYMBOL(phy_device_register); | |
00db8189 | 411 | |
38737e49 RK |
412 | /** |
413 | * phy_device_remove - Remove a previously registered phy device from the MDIO bus | |
414 | * @phydev: phy_device structure to remove | |
415 | * | |
416 | * This doesn't free the phy_device itself, it merely reverses the effects | |
417 | * of phy_device_register(). Use phy_device_free() to free the device | |
418 | * after calling this function. | |
419 | */ | |
420 | void phy_device_remove(struct phy_device *phydev) | |
421 | { | |
e5a03bfd AL |
422 | struct mii_bus *bus = phydev->mdio.bus; |
423 | int addr = phydev->mdio.addr; | |
38737e49 | 424 | |
e5a03bfd | 425 | device_del(&phydev->mdio.dev); |
38737e49 RK |
426 | bus->phy_map[addr] = NULL; |
427 | } | |
428 | EXPORT_SYMBOL(phy_device_remove); | |
429 | ||
f8f76db1 JP |
430 | /** |
431 | * phy_find_first - finds the first PHY device on the bus | |
432 | * @bus: the target MII bus | |
433 | */ | |
434 | struct phy_device *phy_find_first(struct mii_bus *bus) | |
435 | { | |
436 | int addr; | |
437 | ||
438 | for (addr = 0; addr < PHY_MAX_ADDR; addr++) { | |
439 | if (bus->phy_map[addr]) | |
440 | return bus->phy_map[addr]; | |
441 | } | |
442 | return NULL; | |
443 | } | |
444 | EXPORT_SYMBOL(phy_find_first); | |
445 | ||
b3df0da8 RD |
446 | /** |
447 | * phy_prepare_link - prepares the PHY layer to monitor link status | |
448 | * @phydev: target phy_device struct | |
449 | * @handler: callback function for link status change notifications | |
00db8189 | 450 | * |
b3df0da8 | 451 | * Description: Tells the PHY infrastructure to handle the |
00db8189 AF |
452 | * gory details on monitoring link status (whether through |
453 | * polling or an interrupt), and to call back to the | |
454 | * connected device driver when the link status changes. | |
455 | * If you want to monitor your own link state, don't call | |
b3df0da8 RD |
456 | * this function. |
457 | */ | |
89ff05ec | 458 | static void phy_prepare_link(struct phy_device *phydev, |
2f53e904 | 459 | void (*handler)(struct net_device *)) |
00db8189 AF |
460 | { |
461 | phydev->adjust_link = handler; | |
462 | } | |
463 | ||
fa94f6d9 GL |
464 | /** |
465 | * phy_connect_direct - connect an ethernet device to a specific phy_device | |
466 | * @dev: the network device to connect | |
467 | * @phydev: the pointer to the phy device | |
468 | * @handler: callback function for state change notifications | |
fa94f6d9 GL |
469 | * @interface: PHY device's interface |
470 | */ | |
471 | int phy_connect_direct(struct net_device *dev, struct phy_device *phydev, | |
f9a8f83b | 472 | void (*handler)(struct net_device *), |
fa94f6d9 GL |
473 | phy_interface_t interface) |
474 | { | |
475 | int rc; | |
476 | ||
f9a8f83b | 477 | rc = phy_attach_direct(dev, phydev, phydev->dev_flags, interface); |
fa94f6d9 GL |
478 | if (rc) |
479 | return rc; | |
480 | ||
481 | phy_prepare_link(phydev, handler); | |
29935aeb | 482 | phy_start_machine(phydev); |
fa94f6d9 GL |
483 | if (phydev->irq > 0) |
484 | phy_start_interrupts(phydev); | |
485 | ||
486 | return 0; | |
487 | } | |
488 | EXPORT_SYMBOL(phy_connect_direct); | |
489 | ||
b3df0da8 RD |
490 | /** |
491 | * phy_connect - connect an ethernet device to a PHY device | |
492 | * @dev: the network device to connect | |
5d12b132 | 493 | * @bus_id: the id string of the PHY device to connect |
b3df0da8 | 494 | * @handler: callback function for state change notifications |
b3df0da8 | 495 | * @interface: PHY device's interface |
e1393456 | 496 | * |
b3df0da8 | 497 | * Description: Convenience function for connecting ethernet |
e1393456 AF |
498 | * devices to PHY devices. The default behavior is for |
499 | * the PHY infrastructure to handle everything, and only notify | |
500 | * the connected driver when the link status changes. If you | |
501 | * don't want, or can't use the provided functionality, you may | |
502 | * choose to call only the subset of functions which provide | |
503 | * the desired functionality. | |
504 | */ | |
e109374f | 505 | struct phy_device *phy_connect(struct net_device *dev, const char *bus_id, |
2f53e904 SS |
506 | void (*handler)(struct net_device *), |
507 | phy_interface_t interface) | |
e1393456 AF |
508 | { |
509 | struct phy_device *phydev; | |
fa94f6d9 GL |
510 | struct device *d; |
511 | int rc; | |
e1393456 | 512 | |
fa94f6d9 | 513 | /* Search the list of PHY devices on the mdio bus for the |
2f53e904 SS |
514 | * PHY with the requested name |
515 | */ | |
fa94f6d9 GL |
516 | d = bus_find_device_by_name(&mdio_bus_type, NULL, bus_id); |
517 | if (!d) { | |
518 | pr_err("PHY %s not found\n", bus_id); | |
519 | return ERR_PTR(-ENODEV); | |
520 | } | |
521 | phydev = to_phy_device(d); | |
e1393456 | 522 | |
f9a8f83b | 523 | rc = phy_connect_direct(dev, phydev, handler, interface); |
fa94f6d9 GL |
524 | if (rc) |
525 | return ERR_PTR(rc); | |
e1393456 AF |
526 | |
527 | return phydev; | |
528 | } | |
529 | EXPORT_SYMBOL(phy_connect); | |
530 | ||
b3df0da8 | 531 | /** |
2f53e904 SS |
532 | * phy_disconnect - disable interrupts, stop state machine, and detach a PHY |
533 | * device | |
b3df0da8 RD |
534 | * @phydev: target phy_device struct |
535 | */ | |
e1393456 AF |
536 | void phy_disconnect(struct phy_device *phydev) |
537 | { | |
538 | if (phydev->irq > 0) | |
539 | phy_stop_interrupts(phydev); | |
540 | ||
541 | phy_stop_machine(phydev); | |
e109374f | 542 | |
e1393456 AF |
543 | phydev->adjust_link = NULL; |
544 | ||
545 | phy_detach(phydev); | |
546 | } | |
547 | EXPORT_SYMBOL(phy_disconnect); | |
548 | ||
87aa9f9c FF |
549 | /** |
550 | * phy_poll_reset - Safely wait until a PHY reset has properly completed | |
551 | * @phydev: The PHY device to poll | |
552 | * | |
553 | * Description: According to IEEE 802.3, Section 2, Subsection 22.2.4.1.1, as | |
554 | * published in 2008, a PHY reset may take up to 0.5 seconds. The MII BMCR | |
555 | * register must be polled until the BMCR_RESET bit clears. | |
556 | * | |
557 | * Furthermore, any attempts to write to PHY registers may have no effect | |
558 | * or even generate MDIO bus errors until this is complete. | |
559 | * | |
560 | * Some PHYs (such as the Marvell 88E1111) don't entirely conform to the | |
561 | * standard and do not fully reset after the BMCR_RESET bit is set, and may | |
562 | * even *REQUIRE* a soft-reset to properly restart autonegotiation. In an | |
563 | * effort to support such broken PHYs, this function is separate from the | |
564 | * standard phy_init_hw() which will zero all the other bits in the BMCR | |
565 | * and reapply all driver-specific and board-specific fixups. | |
566 | */ | |
567 | static int phy_poll_reset(struct phy_device *phydev) | |
568 | { | |
569 | /* Poll until the reset bit clears (50ms per retry == 0.6 sec) */ | |
570 | unsigned int retries = 12; | |
571 | int ret; | |
572 | ||
573 | do { | |
574 | msleep(50); | |
575 | ret = phy_read(phydev, MII_BMCR); | |
576 | if (ret < 0) | |
577 | return ret; | |
578 | } while (ret & BMCR_RESET && --retries); | |
579 | if (ret & BMCR_RESET) | |
580 | return -ETIMEDOUT; | |
581 | ||
2f53e904 | 582 | /* Some chips (smsc911x) may still need up to another 1ms after the |
87aa9f9c FF |
583 | * BMCR_RESET bit is cleared before they are usable. |
584 | */ | |
585 | msleep(1); | |
586 | return 0; | |
587 | } | |
588 | ||
2f5cb434 AV |
589 | int phy_init_hw(struct phy_device *phydev) |
590 | { | |
9df81dd7 | 591 | int ret = 0; |
2f5cb434 AV |
592 | |
593 | if (!phydev->drv || !phydev->drv->config_init) | |
594 | return 0; | |
595 | ||
9df81dd7 FF |
596 | if (phydev->drv->soft_reset) |
597 | ret = phydev->drv->soft_reset(phydev); | |
598 | else | |
599 | ret = genphy_soft_reset(phydev); | |
600 | ||
87aa9f9c FF |
601 | if (ret < 0) |
602 | return ret; | |
603 | ||
2f5cb434 AV |
604 | ret = phy_scan_fixups(phydev); |
605 | if (ret < 0) | |
606 | return ret; | |
607 | ||
608 | return phydev->drv->config_init(phydev); | |
609 | } | |
87aa9f9c | 610 | EXPORT_SYMBOL(phy_init_hw); |
2f5cb434 | 611 | |
2220943a AL |
612 | void phy_attached_info(struct phy_device *phydev) |
613 | { | |
614 | phy_attached_print(phydev, NULL); | |
615 | } | |
616 | EXPORT_SYMBOL(phy_attached_info); | |
617 | ||
618 | #define ATTACHED_FMT "attached PHY driver [%s] (mii_bus:phy_addr=%s, irq=%d)" | |
619 | void phy_attached_print(struct phy_device *phydev, const char *fmt, ...) | |
620 | { | |
621 | if (!fmt) { | |
e5a03bfd | 622 | dev_info(&phydev->mdio.dev, ATTACHED_FMT "\n", |
2220943a AL |
623 | phydev->drv->name, phydev_name(phydev), |
624 | phydev->irq); | |
625 | } else { | |
626 | va_list ap; | |
627 | ||
e5a03bfd | 628 | dev_info(&phydev->mdio.dev, ATTACHED_FMT, |
2220943a AL |
629 | phydev->drv->name, phydev_name(phydev), |
630 | phydev->irq); | |
631 | ||
632 | va_start(ap, fmt); | |
633 | vprintk(fmt, ap); | |
634 | va_end(ap); | |
635 | } | |
636 | } | |
637 | EXPORT_SYMBOL(phy_attached_print); | |
638 | ||
b3df0da8 | 639 | /** |
fa94f6d9 | 640 | * phy_attach_direct - attach a network device to a given PHY device pointer |
b3df0da8 | 641 | * @dev: network device to attach |
fa94f6d9 | 642 | * @phydev: Pointer to phy_device to attach |
b3df0da8 RD |
643 | * @flags: PHY device's dev_flags |
644 | * @interface: PHY device's interface | |
e1393456 | 645 | * |
b3df0da8 | 646 | * Description: Called by drivers to attach to a particular PHY |
e1393456 | 647 | * device. The phy_device is found, and properly hooked up |
257184d7 AF |
648 | * to the phy_driver. If no driver is attached, then a |
649 | * generic driver is used. The phy_device is given a ptr to | |
e1393456 | 650 | * the attaching device, and given a callback for link status |
b3df0da8 | 651 | * change. The phy_device is returned to the attaching driver. |
7322967b | 652 | * This function takes a reference on the phy device. |
e1393456 | 653 | */ |
257184d7 AF |
654 | int phy_attach_direct(struct net_device *dev, struct phy_device *phydev, |
655 | u32 flags, phy_interface_t interface) | |
e1393456 | 656 | { |
e5a03bfd AL |
657 | struct mii_bus *bus = phydev->mdio.bus; |
658 | struct device *d = &phydev->mdio.dev; | |
d005a09e | 659 | int err; |
e1393456 | 660 | |
3e3aaf64 RK |
661 | if (!try_module_get(bus->owner)) { |
662 | dev_err(&dev->dev, "failed to get the bus module\n"); | |
663 | return -EIO; | |
664 | } | |
665 | ||
7322967b RK |
666 | get_device(d); |
667 | ||
e1393456 | 668 | /* Assume that if there is no driver, that it doesn't |
2f53e904 SS |
669 | * exist, and we should use the genphy driver. |
670 | */ | |
ef899c07 | 671 | if (!d->driver) { |
257184d7 AF |
672 | if (phydev->is_c45) |
673 | d->driver = &genphy_driver[GENPHY_DRV_10G].driver; | |
674 | else | |
675 | d->driver = &genphy_driver[GENPHY_DRV_1G].driver; | |
e1393456 AF |
676 | |
677 | err = d->driver->probe(d); | |
b7a00ecd JG |
678 | if (err >= 0) |
679 | err = device_bind_driver(d); | |
e1393456 | 680 | |
b7a00ecd | 681 | if (err) |
3e3aaf64 | 682 | goto error; |
e1393456 AF |
683 | } |
684 | ||
685 | if (phydev->attached_dev) { | |
fa94f6d9 | 686 | dev_err(&dev->dev, "PHY already attached\n"); |
3e3aaf64 RK |
687 | err = -EBUSY; |
688 | goto error; | |
b3565f27 EG |
689 | } |
690 | ||
e1393456 | 691 | phydev->attached_dev = dev; |
c1f19b51 | 692 | dev->phydev = phydev; |
e1393456 AF |
693 | |
694 | phydev->dev_flags = flags; | |
695 | ||
e8a2b6a4 AF |
696 | phydev->interface = interface; |
697 | ||
ef24b16b AV |
698 | phydev->state = PHY_READY; |
699 | ||
e8a2b6a4 AF |
700 | /* Do initial configuration here, now that |
701 | * we have certain key parameters | |
2f53e904 SS |
702 | * (dev_flags and interface) |
703 | */ | |
d005a09e MKB |
704 | err = phy_init_hw(phydev); |
705 | if (err) | |
706 | phy_detach(phydev); | |
b394745d GR |
707 | else |
708 | phy_resume(phydev); | |
1211ce53 | 709 | |
d005a09e | 710 | return err; |
3e3aaf64 RK |
711 | |
712 | error: | |
7322967b | 713 | put_device(d); |
3e3aaf64 RK |
714 | module_put(bus->owner); |
715 | return err; | |
fa94f6d9 | 716 | } |
257184d7 | 717 | EXPORT_SYMBOL(phy_attach_direct); |
fa94f6d9 GL |
718 | |
719 | /** | |
720 | * phy_attach - attach a network device to a particular PHY device | |
721 | * @dev: network device to attach | |
722 | * @bus_id: Bus ID of PHY device to attach | |
fa94f6d9 GL |
723 | * @interface: PHY device's interface |
724 | * | |
725 | * Description: Same as phy_attach_direct() except that a PHY bus_id | |
726 | * string is passed instead of a pointer to a struct phy_device. | |
727 | */ | |
2f53e904 SS |
728 | struct phy_device *phy_attach(struct net_device *dev, const char *bus_id, |
729 | phy_interface_t interface) | |
fa94f6d9 GL |
730 | { |
731 | struct bus_type *bus = &mdio_bus_type; | |
732 | struct phy_device *phydev; | |
733 | struct device *d; | |
734 | int rc; | |
735 | ||
736 | /* Search the list of PHY devices on the mdio bus for the | |
2f53e904 SS |
737 | * PHY with the requested name |
738 | */ | |
fa94f6d9 GL |
739 | d = bus_find_device_by_name(bus, NULL, bus_id); |
740 | if (!d) { | |
741 | pr_err("PHY %s not found\n", bus_id); | |
742 | return ERR_PTR(-ENODEV); | |
e8a2b6a4 | 743 | } |
fa94f6d9 GL |
744 | phydev = to_phy_device(d); |
745 | ||
f9a8f83b | 746 | rc = phy_attach_direct(dev, phydev, phydev->dev_flags, interface); |
fa94f6d9 GL |
747 | if (rc) |
748 | return ERR_PTR(rc); | |
e8a2b6a4 | 749 | |
e1393456 AF |
750 | return phydev; |
751 | } | |
752 | EXPORT_SYMBOL(phy_attach); | |
753 | ||
b3df0da8 RD |
754 | /** |
755 | * phy_detach - detach a PHY device from its network device | |
756 | * @phydev: target phy_device struct | |
7322967b RK |
757 | * |
758 | * This detaches the phy device from its network device and the phy | |
759 | * driver, and drops the reference count taken in phy_attach_direct(). | |
b3df0da8 | 760 | */ |
e1393456 AF |
761 | void phy_detach(struct phy_device *phydev) |
762 | { | |
3e3aaf64 | 763 | struct mii_bus *bus; |
ab2145ed | 764 | int i; |
b3565f27 | 765 | |
c1f19b51 | 766 | phydev->attached_dev->phydev = NULL; |
e1393456 | 767 | phydev->attached_dev = NULL; |
1211ce53 | 768 | phy_suspend(phydev); |
e1393456 AF |
769 | |
770 | /* If the device had no specific driver before (i.e. - it | |
771 | * was using the generic driver), we unbind the device | |
772 | * from the generic driver so that there's a chance a | |
2f53e904 SS |
773 | * real driver could be loaded |
774 | */ | |
ab2145ed | 775 | for (i = 0; i < ARRAY_SIZE(genphy_driver); i++) { |
e5a03bfd AL |
776 | if (phydev->mdio.dev.driver == &genphy_driver[i].driver) { |
777 | device_release_driver(&phydev->mdio.dev); | |
ab2145ed SX |
778 | break; |
779 | } | |
780 | } | |
3e3aaf64 | 781 | |
7322967b RK |
782 | /* |
783 | * The phydev might go away on the put_device() below, so avoid | |
784 | * a use-after-free bug by reading the underlying bus first. | |
785 | */ | |
e5a03bfd | 786 | bus = phydev->mdio.bus; |
3e3aaf64 | 787 | |
e5a03bfd | 788 | put_device(&phydev->mdio.dev); |
3e3aaf64 | 789 | module_put(bus->owner); |
e1393456 AF |
790 | } |
791 | EXPORT_SYMBOL(phy_detach); | |
792 | ||
481b5d93 SH |
793 | int phy_suspend(struct phy_device *phydev) |
794 | { | |
e5a03bfd | 795 | struct phy_driver *phydrv = to_phy_driver(phydev->mdio.dev.driver); |
32fc3fd4 | 796 | struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL }; |
8a477a6f | 797 | int ret = 0; |
481b5d93 SH |
798 | |
799 | /* If the device has WOL enabled, we cannot suspend the PHY */ | |
481b5d93 SH |
800 | phy_ethtool_get_wol(phydev, &wol); |
801 | if (wol.wolopts) | |
802 | return -EBUSY; | |
803 | ||
804 | if (phydrv->suspend) | |
8a477a6f FF |
805 | ret = phydrv->suspend(phydev); |
806 | ||
807 | if (ret) | |
808 | return ret; | |
809 | ||
810 | phydev->suspended = true; | |
811 | ||
812 | return ret; | |
481b5d93 | 813 | } |
ca127697 | 814 | EXPORT_SYMBOL(phy_suspend); |
481b5d93 SH |
815 | |
816 | int phy_resume(struct phy_device *phydev) | |
817 | { | |
e5a03bfd | 818 | struct phy_driver *phydrv = to_phy_driver(phydev->mdio.dev.driver); |
8a477a6f | 819 | int ret = 0; |
481b5d93 SH |
820 | |
821 | if (phydrv->resume) | |
8a477a6f FF |
822 | ret = phydrv->resume(phydev); |
823 | ||
824 | if (ret) | |
825 | return ret; | |
826 | ||
827 | phydev->suspended = false; | |
828 | ||
829 | return ret; | |
481b5d93 | 830 | } |
ca127697 | 831 | EXPORT_SYMBOL(phy_resume); |
e1393456 | 832 | |
00db8189 AF |
833 | /* Generic PHY support and helper functions */ |
834 | ||
b3df0da8 | 835 | /** |
25985edc | 836 | * genphy_config_advert - sanitize and advertise auto-negotiation parameters |
b3df0da8 | 837 | * @phydev: target phy_device struct |
00db8189 | 838 | * |
b3df0da8 | 839 | * Description: Writes MII_ADVERTISE with the appropriate values, |
00db8189 | 840 | * after sanitizing the values to make sure we only advertise |
51e2a384 TP |
841 | * what is supported. Returns < 0 on error, 0 if the PHY's advertisement |
842 | * hasn't changed, and > 0 if it has changed. | |
00db8189 | 843 | */ |
89ff05ec | 844 | static int genphy_config_advert(struct phy_device *phydev) |
00db8189 AF |
845 | { |
846 | u32 advertise; | |
5273e3a5 | 847 | int oldadv, adv, bmsr; |
51e2a384 | 848 | int err, changed = 0; |
00db8189 | 849 | |
2f53e904 | 850 | /* Only allow advertising what this PHY supports */ |
00db8189 AF |
851 | phydev->advertising &= phydev->supported; |
852 | advertise = phydev->advertising; | |
853 | ||
854 | /* Setup standard advertisement */ | |
2f53e904 | 855 | adv = phy_read(phydev, MII_ADVERTISE); |
00db8189 AF |
856 | if (adv < 0) |
857 | return adv; | |
858 | ||
2f53e904 | 859 | oldadv = adv; |
28011cf1 | 860 | adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4 | ADVERTISE_PAUSE_CAP | |
00db8189 | 861 | ADVERTISE_PAUSE_ASYM); |
37f07023 | 862 | adv |= ethtool_adv_to_mii_adv_t(advertise); |
00db8189 | 863 | |
51e2a384 TP |
864 | if (adv != oldadv) { |
865 | err = phy_write(phydev, MII_ADVERTISE, adv); | |
00db8189 | 866 | |
51e2a384 TP |
867 | if (err < 0) |
868 | return err; | |
869 | changed = 1; | |
870 | } | |
00db8189 | 871 | |
5273e3a5 FF |
872 | bmsr = phy_read(phydev, MII_BMSR); |
873 | if (bmsr < 0) | |
874 | return bmsr; | |
875 | ||
876 | /* Per 802.3-2008, Section 22.2.4.2.16 Extended status all | |
877 | * 1000Mbits/sec capable PHYs shall have the BMSR_ESTATEN bit set to a | |
878 | * logical 1. | |
879 | */ | |
880 | if (!(bmsr & BMSR_ESTATEN)) | |
881 | return changed; | |
882 | ||
00db8189 | 883 | /* Configure gigabit if it's supported */ |
5273e3a5 FF |
884 | adv = phy_read(phydev, MII_CTRL1000); |
885 | if (adv < 0) | |
886 | return adv; | |
887 | ||
888 | oldadv = adv; | |
889 | adv &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF); | |
890 | ||
00db8189 | 891 | if (phydev->supported & (SUPPORTED_1000baseT_Half | |
2f53e904 | 892 | SUPPORTED_1000baseT_Full)) { |
37f07023 | 893 | adv |= ethtool_adv_to_mii_ctrl1000_t(advertise); |
00db8189 AF |
894 | } |
895 | ||
eb686231 M |
896 | if (adv != oldadv) |
897 | changed = 1; | |
898 | ||
5273e3a5 FF |
899 | err = phy_write(phydev, MII_CTRL1000, adv); |
900 | if (err < 0) | |
901 | return err; | |
902 | ||
51e2a384 | 903 | return changed; |
00db8189 | 904 | } |
00db8189 | 905 | |
b3df0da8 RD |
906 | /** |
907 | * genphy_setup_forced - configures/forces speed/duplex from @phydev | |
908 | * @phydev: target phy_device struct | |
00db8189 | 909 | * |
b3df0da8 | 910 | * Description: Configures MII_BMCR to force speed/duplex |
00db8189 | 911 | * to the values in phydev. Assumes that the values are valid. |
b3df0da8 RD |
912 | * Please see phy_sanitize_settings(). |
913 | */ | |
3fb69bca | 914 | int genphy_setup_forced(struct phy_device *phydev) |
00db8189 | 915 | { |
bc1e0a09 | 916 | int ctl = 0; |
00db8189 | 917 | |
2f53e904 SS |
918 | phydev->pause = 0; |
919 | phydev->asym_pause = 0; | |
00db8189 AF |
920 | |
921 | if (SPEED_1000 == phydev->speed) | |
922 | ctl |= BMCR_SPEED1000; | |
923 | else if (SPEED_100 == phydev->speed) | |
924 | ctl |= BMCR_SPEED100; | |
925 | ||
926 | if (DUPLEX_FULL == phydev->duplex) | |
927 | ctl |= BMCR_FULLDPLX; | |
e109374f | 928 | |
e62a768f | 929 | return phy_write(phydev, MII_BMCR, ctl); |
00db8189 | 930 | } |
3fb69bca | 931 | EXPORT_SYMBOL(genphy_setup_forced); |
00db8189 | 932 | |
b3df0da8 RD |
933 | /** |
934 | * genphy_restart_aneg - Enable and Restart Autonegotiation | |
935 | * @phydev: target phy_device struct | |
936 | */ | |
00db8189 AF |
937 | int genphy_restart_aneg(struct phy_device *phydev) |
938 | { | |
553fe92b | 939 | int ctl = phy_read(phydev, MII_BMCR); |
00db8189 AF |
940 | |
941 | if (ctl < 0) | |
942 | return ctl; | |
943 | ||
2f53e904 | 944 | ctl |= BMCR_ANENABLE | BMCR_ANRESTART; |
00db8189 AF |
945 | |
946 | /* Don't isolate the PHY if we're negotiating */ | |
2f53e904 | 947 | ctl &= ~BMCR_ISOLATE; |
00db8189 | 948 | |
553fe92b | 949 | return phy_write(phydev, MII_BMCR, ctl); |
00db8189 | 950 | } |
892871dc | 951 | EXPORT_SYMBOL(genphy_restart_aneg); |
00db8189 | 952 | |
b3df0da8 RD |
953 | /** |
954 | * genphy_config_aneg - restart auto-negotiation or write BMCR | |
955 | * @phydev: target phy_device struct | |
00db8189 | 956 | * |
b3df0da8 | 957 | * Description: If auto-negotiation is enabled, we configure the |
00db8189 | 958 | * advertising, and then restart auto-negotiation. If it is not |
b3df0da8 | 959 | * enabled, then we write the BMCR. |
00db8189 AF |
960 | */ |
961 | int genphy_config_aneg(struct phy_device *phydev) | |
962 | { | |
de339c2a | 963 | int result; |
00db8189 | 964 | |
de339c2a TP |
965 | if (AUTONEG_ENABLE != phydev->autoneg) |
966 | return genphy_setup_forced(phydev); | |
00db8189 | 967 | |
de339c2a | 968 | result = genphy_config_advert(phydev); |
de339c2a TP |
969 | if (result < 0) /* error */ |
970 | return result; | |
de339c2a | 971 | if (result == 0) { |
25985edc | 972 | /* Advertisement hasn't changed, but maybe aneg was never on to |
2f53e904 SS |
973 | * begin with? Or maybe phy was isolated? |
974 | */ | |
de339c2a TP |
975 | int ctl = phy_read(phydev, MII_BMCR); |
976 | ||
977 | if (ctl < 0) | |
978 | return ctl; | |
979 | ||
980 | if (!(ctl & BMCR_ANENABLE) || (ctl & BMCR_ISOLATE)) | |
981 | result = 1; /* do restart aneg */ | |
982 | } | |
983 | ||
984 | /* Only restart aneg if we are advertising something different | |
2f53e904 SS |
985 | * than we were before. |
986 | */ | |
de339c2a TP |
987 | if (result > 0) |
988 | result = genphy_restart_aneg(phydev); | |
00db8189 | 989 | |
51e2a384 | 990 | return result; |
00db8189 AF |
991 | } |
992 | EXPORT_SYMBOL(genphy_config_aneg); | |
993 | ||
a9fa6e6a FF |
994 | /** |
995 | * genphy_aneg_done - return auto-negotiation status | |
996 | * @phydev: target phy_device struct | |
997 | * | |
998 | * Description: Reads the status register and returns 0 either if | |
999 | * auto-negotiation is incomplete, or if there was an error. | |
1000 | * Returns BMSR_ANEGCOMPLETE if auto-negotiation is done. | |
1001 | */ | |
1002 | int genphy_aneg_done(struct phy_device *phydev) | |
1003 | { | |
1004 | int retval = phy_read(phydev, MII_BMSR); | |
1005 | ||
1006 | return (retval < 0) ? retval : (retval & BMSR_ANEGCOMPLETE); | |
1007 | } | |
1008 | EXPORT_SYMBOL(genphy_aneg_done); | |
1009 | ||
395056ed | 1010 | static int gen10g_config_aneg(struct phy_device *phydev) |
124059fd AF |
1011 | { |
1012 | return 0; | |
1013 | } | |
124059fd | 1014 | |
b3df0da8 RD |
1015 | /** |
1016 | * genphy_update_link - update link status in @phydev | |
1017 | * @phydev: target phy_device struct | |
00db8189 | 1018 | * |
b3df0da8 | 1019 | * Description: Update the value in phydev->link to reflect the |
00db8189 | 1020 | * current link value. In order to do this, we need to read |
b3df0da8 | 1021 | * the status register twice, keeping the second value. |
00db8189 AF |
1022 | */ |
1023 | int genphy_update_link(struct phy_device *phydev) | |
1024 | { | |
1025 | int status; | |
1026 | ||
1027 | /* Do a fake read */ | |
1028 | status = phy_read(phydev, MII_BMSR); | |
00db8189 AF |
1029 | if (status < 0) |
1030 | return status; | |
1031 | ||
1032 | /* Read link and autonegotiation status */ | |
1033 | status = phy_read(phydev, MII_BMSR); | |
00db8189 AF |
1034 | if (status < 0) |
1035 | return status; | |
1036 | ||
1037 | if ((status & BMSR_LSTATUS) == 0) | |
1038 | phydev->link = 0; | |
1039 | else | |
1040 | phydev->link = 1; | |
1041 | ||
1042 | return 0; | |
1043 | } | |
6b655529 | 1044 | EXPORT_SYMBOL(genphy_update_link); |
00db8189 | 1045 | |
b3df0da8 RD |
1046 | /** |
1047 | * genphy_read_status - check the link status and update current link state | |
1048 | * @phydev: target phy_device struct | |
00db8189 | 1049 | * |
b3df0da8 | 1050 | * Description: Check the link, then figure out the current state |
00db8189 AF |
1051 | * by comparing what we advertise with what the link partner |
1052 | * advertises. Start by checking the gigabit possibilities, | |
1053 | * then move on to 10/100. | |
1054 | */ | |
1055 | int genphy_read_status(struct phy_device *phydev) | |
1056 | { | |
1057 | int adv; | |
1058 | int err; | |
1059 | int lpa; | |
1060 | int lpagb = 0; | |
a4572e0c CB |
1061 | int common_adv; |
1062 | int common_adv_gb = 0; | |
00db8189 | 1063 | |
2f53e904 | 1064 | /* Update the link, but return if there was an error */ |
00db8189 AF |
1065 | err = genphy_update_link(phydev); |
1066 | if (err) | |
1067 | return err; | |
1068 | ||
114002bc FF |
1069 | phydev->lp_advertising = 0; |
1070 | ||
00db8189 AF |
1071 | if (AUTONEG_ENABLE == phydev->autoneg) { |
1072 | if (phydev->supported & (SUPPORTED_1000baseT_Half | |
1073 | | SUPPORTED_1000baseT_Full)) { | |
1074 | lpagb = phy_read(phydev, MII_STAT1000); | |
00db8189 AF |
1075 | if (lpagb < 0) |
1076 | return lpagb; | |
1077 | ||
1078 | adv = phy_read(phydev, MII_CTRL1000); | |
00db8189 AF |
1079 | if (adv < 0) |
1080 | return adv; | |
1081 | ||
114002bc FF |
1082 | phydev->lp_advertising = |
1083 | mii_stat1000_to_ethtool_lpa_t(lpagb); | |
a4572e0c | 1084 | common_adv_gb = lpagb & adv << 2; |
00db8189 AF |
1085 | } |
1086 | ||
1087 | lpa = phy_read(phydev, MII_LPA); | |
00db8189 AF |
1088 | if (lpa < 0) |
1089 | return lpa; | |
1090 | ||
114002bc FF |
1091 | phydev->lp_advertising |= mii_lpa_to_ethtool_lpa_t(lpa); |
1092 | ||
00db8189 | 1093 | adv = phy_read(phydev, MII_ADVERTISE); |
00db8189 AF |
1094 | if (adv < 0) |
1095 | return adv; | |
1096 | ||
a4572e0c | 1097 | common_adv = lpa & adv; |
00db8189 AF |
1098 | |
1099 | phydev->speed = SPEED_10; | |
1100 | phydev->duplex = DUPLEX_HALF; | |
2f53e904 SS |
1101 | phydev->pause = 0; |
1102 | phydev->asym_pause = 0; | |
00db8189 | 1103 | |
a4572e0c | 1104 | if (common_adv_gb & (LPA_1000FULL | LPA_1000HALF)) { |
00db8189 AF |
1105 | phydev->speed = SPEED_1000; |
1106 | ||
a4572e0c | 1107 | if (common_adv_gb & LPA_1000FULL) |
00db8189 | 1108 | phydev->duplex = DUPLEX_FULL; |
a4572e0c | 1109 | } else if (common_adv & (LPA_100FULL | LPA_100HALF)) { |
00db8189 | 1110 | phydev->speed = SPEED_100; |
e109374f | 1111 | |
a4572e0c | 1112 | if (common_adv & LPA_100FULL) |
00db8189 AF |
1113 | phydev->duplex = DUPLEX_FULL; |
1114 | } else | |
a4572e0c | 1115 | if (common_adv & LPA_10FULL) |
00db8189 AF |
1116 | phydev->duplex = DUPLEX_FULL; |
1117 | ||
e109374f | 1118 | if (phydev->duplex == DUPLEX_FULL) { |
00db8189 AF |
1119 | phydev->pause = lpa & LPA_PAUSE_CAP ? 1 : 0; |
1120 | phydev->asym_pause = lpa & LPA_PAUSE_ASYM ? 1 : 0; | |
1121 | } | |
1122 | } else { | |
1123 | int bmcr = phy_read(phydev, MII_BMCR); | |
2f53e904 | 1124 | |
00db8189 AF |
1125 | if (bmcr < 0) |
1126 | return bmcr; | |
1127 | ||
1128 | if (bmcr & BMCR_FULLDPLX) | |
1129 | phydev->duplex = DUPLEX_FULL; | |
1130 | else | |
1131 | phydev->duplex = DUPLEX_HALF; | |
1132 | ||
1133 | if (bmcr & BMCR_SPEED1000) | |
1134 | phydev->speed = SPEED_1000; | |
1135 | else if (bmcr & BMCR_SPEED100) | |
1136 | phydev->speed = SPEED_100; | |
1137 | else | |
1138 | phydev->speed = SPEED_10; | |
1139 | ||
2f53e904 SS |
1140 | phydev->pause = 0; |
1141 | phydev->asym_pause = 0; | |
00db8189 AF |
1142 | } |
1143 | ||
1144 | return 0; | |
1145 | } | |
1146 | EXPORT_SYMBOL(genphy_read_status); | |
1147 | ||
395056ed | 1148 | static int gen10g_read_status(struct phy_device *phydev) |
124059fd AF |
1149 | { |
1150 | int devad, reg; | |
1151 | u32 mmd_mask = phydev->c45_ids.devices_in_package; | |
1152 | ||
1153 | phydev->link = 1; | |
1154 | ||
1155 | /* For now just lie and say it's 10G all the time */ | |
1156 | phydev->speed = SPEED_10000; | |
1157 | phydev->duplex = DUPLEX_FULL; | |
1158 | ||
1159 | for (devad = 0; mmd_mask; devad++, mmd_mask = mmd_mask >> 1) { | |
1160 | if (!(mmd_mask & 1)) | |
1161 | continue; | |
1162 | ||
1163 | /* Read twice because link state is latched and a | |
1164 | * read moves the current state into the register | |
1165 | */ | |
1166 | phy_read_mmd(phydev, devad, MDIO_STAT1); | |
1167 | reg = phy_read_mmd(phydev, devad, MDIO_STAT1); | |
1168 | if (reg < 0 || !(reg & MDIO_STAT1_LSTATUS)) | |
1169 | phydev->link = 0; | |
1170 | } | |
1171 | ||
1172 | return 0; | |
1173 | } | |
124059fd | 1174 | |
797ac071 FF |
1175 | /** |
1176 | * genphy_soft_reset - software reset the PHY via BMCR_RESET bit | |
1177 | * @phydev: target phy_device struct | |
1178 | * | |
1179 | * Description: Perform a software PHY reset using the standard | |
1180 | * BMCR_RESET bit and poll for the reset bit to be cleared. | |
1181 | * | |
1182 | * Returns: 0 on success, < 0 on failure | |
1183 | */ | |
1184 | int genphy_soft_reset(struct phy_device *phydev) | |
1185 | { | |
1186 | int ret; | |
1187 | ||
1188 | ret = phy_write(phydev, MII_BMCR, BMCR_RESET); | |
1189 | if (ret < 0) | |
1190 | return ret; | |
1191 | ||
1192 | return phy_poll_reset(phydev); | |
1193 | } | |
1194 | EXPORT_SYMBOL(genphy_soft_reset); | |
1195 | ||
af6b6967 | 1196 | int genphy_config_init(struct phy_device *phydev) |
00db8189 | 1197 | { |
84c22d79 | 1198 | int val; |
00db8189 AF |
1199 | u32 features; |
1200 | ||
00db8189 AF |
1201 | features = (SUPPORTED_TP | SUPPORTED_MII |
1202 | | SUPPORTED_AUI | SUPPORTED_FIBRE | | |
1203 | SUPPORTED_BNC); | |
1204 | ||
1205 | /* Do we support autonegotiation? */ | |
1206 | val = phy_read(phydev, MII_BMSR); | |
00db8189 AF |
1207 | if (val < 0) |
1208 | return val; | |
1209 | ||
1210 | if (val & BMSR_ANEGCAPABLE) | |
1211 | features |= SUPPORTED_Autoneg; | |
1212 | ||
1213 | if (val & BMSR_100FULL) | |
1214 | features |= SUPPORTED_100baseT_Full; | |
1215 | if (val & BMSR_100HALF) | |
1216 | features |= SUPPORTED_100baseT_Half; | |
1217 | if (val & BMSR_10FULL) | |
1218 | features |= SUPPORTED_10baseT_Full; | |
1219 | if (val & BMSR_10HALF) | |
1220 | features |= SUPPORTED_10baseT_Half; | |
1221 | ||
1222 | if (val & BMSR_ESTATEN) { | |
1223 | val = phy_read(phydev, MII_ESTATUS); | |
00db8189 AF |
1224 | if (val < 0) |
1225 | return val; | |
1226 | ||
1227 | if (val & ESTATUS_1000_TFULL) | |
1228 | features |= SUPPORTED_1000baseT_Full; | |
1229 | if (val & ESTATUS_1000_THALF) | |
1230 | features |= SUPPORTED_1000baseT_Half; | |
1231 | } | |
1232 | ||
c242a472 SH |
1233 | phydev->supported &= features; |
1234 | phydev->advertising &= features; | |
00db8189 AF |
1235 | |
1236 | return 0; | |
1237 | } | |
124059fd | 1238 | |
9df81dd7 FF |
1239 | static int gen10g_soft_reset(struct phy_device *phydev) |
1240 | { | |
1241 | /* Do nothing for now */ | |
1242 | return 0; | |
1243 | } | |
af6b6967 | 1244 | EXPORT_SYMBOL(genphy_config_init); |
9df81dd7 | 1245 | |
124059fd AF |
1246 | static int gen10g_config_init(struct phy_device *phydev) |
1247 | { | |
1248 | /* Temporarily just say we support everything */ | |
1249 | phydev->supported = SUPPORTED_10000baseT_Full; | |
1250 | phydev->advertising = SUPPORTED_10000baseT_Full; | |
1251 | ||
1252 | return 0; | |
1253 | } | |
1254 | ||
0f0ca340 GC |
1255 | int genphy_suspend(struct phy_device *phydev) |
1256 | { | |
1257 | int value; | |
1258 | ||
1259 | mutex_lock(&phydev->lock); | |
1260 | ||
1261 | value = phy_read(phydev, MII_BMCR); | |
2f53e904 | 1262 | phy_write(phydev, MII_BMCR, value | BMCR_PDOWN); |
0f0ca340 GC |
1263 | |
1264 | mutex_unlock(&phydev->lock); | |
1265 | ||
1266 | return 0; | |
1267 | } | |
1268 | EXPORT_SYMBOL(genphy_suspend); | |
00db8189 | 1269 | |
395056ed | 1270 | static int gen10g_suspend(struct phy_device *phydev) |
124059fd AF |
1271 | { |
1272 | return 0; | |
1273 | } | |
124059fd | 1274 | |
0f0ca340 GC |
1275 | int genphy_resume(struct phy_device *phydev) |
1276 | { | |
1277 | int value; | |
1278 | ||
1279 | mutex_lock(&phydev->lock); | |
1280 | ||
1281 | value = phy_read(phydev, MII_BMCR); | |
2f53e904 | 1282 | phy_write(phydev, MII_BMCR, value & ~BMCR_PDOWN); |
0f0ca340 GC |
1283 | |
1284 | mutex_unlock(&phydev->lock); | |
1285 | ||
1286 | return 0; | |
1287 | } | |
1288 | EXPORT_SYMBOL(genphy_resume); | |
00db8189 | 1289 | |
395056ed | 1290 | static int gen10g_resume(struct phy_device *phydev) |
124059fd AF |
1291 | { |
1292 | return 0; | |
1293 | } | |
124059fd | 1294 | |
f3a6bd39 SH |
1295 | static int __set_phy_supported(struct phy_device *phydev, u32 max_speed) |
1296 | { | |
1297 | /* The default values for phydev->supported are provided by the PHY | |
1298 | * driver "features" member, we want to reset to sane defaults first | |
1299 | * before supporting higher speeds. | |
1300 | */ | |
1301 | phydev->supported &= PHY_DEFAULT_FEATURES; | |
1302 | ||
1303 | switch (max_speed) { | |
1304 | default: | |
1305 | return -ENOTSUPP; | |
1306 | case SPEED_1000: | |
1307 | phydev->supported |= PHY_1000BT_FEATURES; | |
1308 | /* fall through */ | |
1309 | case SPEED_100: | |
1310 | phydev->supported |= PHY_100BT_FEATURES; | |
1311 | /* fall through */ | |
1312 | case SPEED_10: | |
1313 | phydev->supported |= PHY_10BT_FEATURES; | |
1314 | } | |
1315 | ||
1316 | return 0; | |
1317 | } | |
1318 | ||
1319 | int phy_set_max_speed(struct phy_device *phydev, u32 max_speed) | |
1320 | { | |
1321 | int err; | |
1322 | ||
1323 | err = __set_phy_supported(phydev, max_speed); | |
1324 | if (err) | |
1325 | return err; | |
1326 | ||
1327 | phydev->advertising = phydev->supported; | |
1328 | ||
1329 | return 0; | |
1330 | } | |
1331 | EXPORT_SYMBOL(phy_set_max_speed); | |
1332 | ||
de906af1 SH |
1333 | static void of_set_phy_supported(struct phy_device *phydev) |
1334 | { | |
e5a03bfd | 1335 | struct device_node *node = phydev->mdio.dev.of_node; |
de906af1 SH |
1336 | u32 max_speed; |
1337 | ||
1338 | if (!IS_ENABLED(CONFIG_OF_MDIO)) | |
1339 | return; | |
1340 | ||
1341 | if (!node) | |
1342 | return; | |
1343 | ||
f3a6bd39 SH |
1344 | if (!of_property_read_u32(node, "max-speed", &max_speed)) |
1345 | __set_phy_supported(phydev, max_speed); | |
de906af1 SH |
1346 | } |
1347 | ||
b3df0da8 RD |
1348 | /** |
1349 | * phy_probe - probe and init a PHY device | |
1350 | * @dev: device to probe and init | |
00db8189 | 1351 | * |
b3df0da8 | 1352 | * Description: Take care of setting up the phy_device structure, |
00db8189 AF |
1353 | * set the state to READY (the driver's init function should |
1354 | * set it to STARTING if needed). | |
1355 | */ | |
1356 | static int phy_probe(struct device *dev) | |
1357 | { | |
553fe92b | 1358 | struct phy_device *phydev = to_phy_device(dev); |
e5a03bfd | 1359 | struct device_driver *drv = phydev->mdio.dev.driver; |
553fe92b | 1360 | struct phy_driver *phydrv = to_phy_driver(drv); |
00db8189 AF |
1361 | int err = 0; |
1362 | ||
00db8189 AF |
1363 | phydev->drv = phydrv; |
1364 | ||
2c7b4921 FF |
1365 | /* Disable the interrupt if the PHY doesn't support it |
1366 | * but the interrupt is still a valid one | |
1367 | */ | |
1368 | if (!(phydrv->flags & PHY_HAS_INTERRUPT) && | |
2f53e904 | 1369 | phy_interrupt_is_valid(phydev)) |
00db8189 AF |
1370 | phydev->irq = PHY_POLL; |
1371 | ||
4284b6a5 FF |
1372 | if (phydrv->flags & PHY_IS_INTERNAL) |
1373 | phydev->is_internal = true; | |
1374 | ||
35b5f6b1 | 1375 | mutex_lock(&phydev->lock); |
00db8189 AF |
1376 | |
1377 | /* Start out supporting everything. Eventually, | |
1378 | * a controller will attach, and may modify one | |
2f53e904 SS |
1379 | * or both of these values |
1380 | */ | |
00db8189 | 1381 | phydev->supported = phydrv->features; |
de906af1 SH |
1382 | of_set_phy_supported(phydev); |
1383 | phydev->advertising = phydev->supported; | |
00db8189 AF |
1384 | |
1385 | /* Set the state to READY by default */ | |
1386 | phydev->state = PHY_READY; | |
1387 | ||
1388 | if (phydev->drv->probe) | |
1389 | err = phydev->drv->probe(phydev); | |
1390 | ||
35b5f6b1 | 1391 | mutex_unlock(&phydev->lock); |
00db8189 | 1392 | |
00db8189 AF |
1393 | return err; |
1394 | } | |
1395 | ||
1396 | static int phy_remove(struct device *dev) | |
1397 | { | |
553fe92b | 1398 | struct phy_device *phydev = to_phy_device(dev); |
00db8189 | 1399 | |
35b5f6b1 | 1400 | mutex_lock(&phydev->lock); |
00db8189 | 1401 | phydev->state = PHY_DOWN; |
35b5f6b1 | 1402 | mutex_unlock(&phydev->lock); |
00db8189 AF |
1403 | |
1404 | if (phydev->drv->remove) | |
1405 | phydev->drv->remove(phydev); | |
00db8189 AF |
1406 | phydev->drv = NULL; |
1407 | ||
1408 | return 0; | |
1409 | } | |
1410 | ||
b3df0da8 RD |
1411 | /** |
1412 | * phy_driver_register - register a phy_driver with the PHY layer | |
1413 | * @new_driver: new phy_driver to register | |
1414 | */ | |
00db8189 AF |
1415 | int phy_driver_register(struct phy_driver *new_driver) |
1416 | { | |
1417 | int retval; | |
1418 | ||
00db8189 AF |
1419 | new_driver->driver.name = new_driver->name; |
1420 | new_driver->driver.bus = &mdio_bus_type; | |
1421 | new_driver->driver.probe = phy_probe; | |
1422 | new_driver->driver.remove = phy_remove; | |
1423 | ||
1424 | retval = driver_register(&new_driver->driver); | |
00db8189 | 1425 | if (retval) { |
8d242488 JP |
1426 | pr_err("%s: Error %d in registering driver\n", |
1427 | new_driver->name, retval); | |
00db8189 AF |
1428 | |
1429 | return retval; | |
1430 | } | |
1431 | ||
f2511f13 | 1432 | pr_debug("%s: Registered new driver\n", new_driver->name); |
00db8189 AF |
1433 | |
1434 | return 0; | |
1435 | } | |
1436 | EXPORT_SYMBOL(phy_driver_register); | |
1437 | ||
d5bf9071 CH |
1438 | int phy_drivers_register(struct phy_driver *new_driver, int n) |
1439 | { | |
1440 | int i, ret = 0; | |
1441 | ||
1442 | for (i = 0; i < n; i++) { | |
1443 | ret = phy_driver_register(new_driver + i); | |
1444 | if (ret) { | |
1445 | while (i-- > 0) | |
1446 | phy_driver_unregister(new_driver + i); | |
1447 | break; | |
1448 | } | |
1449 | } | |
1450 | return ret; | |
1451 | } | |
1452 | EXPORT_SYMBOL(phy_drivers_register); | |
1453 | ||
00db8189 AF |
1454 | void phy_driver_unregister(struct phy_driver *drv) |
1455 | { | |
1456 | driver_unregister(&drv->driver); | |
1457 | } | |
1458 | EXPORT_SYMBOL(phy_driver_unregister); | |
1459 | ||
d5bf9071 CH |
1460 | void phy_drivers_unregister(struct phy_driver *drv, int n) |
1461 | { | |
1462 | int i; | |
2f53e904 SS |
1463 | |
1464 | for (i = 0; i < n; i++) | |
d5bf9071 | 1465 | phy_driver_unregister(drv + i); |
d5bf9071 CH |
1466 | } |
1467 | EXPORT_SYMBOL(phy_drivers_unregister); | |
1468 | ||
ab2145ed SX |
1469 | static struct phy_driver genphy_driver[] = { |
1470 | { | |
e1393456 AF |
1471 | .phy_id = 0xffffffff, |
1472 | .phy_id_mask = 0xffffffff, | |
1473 | .name = "Generic PHY", | |
9df81dd7 | 1474 | .soft_reset = genphy_soft_reset, |
e1393456 | 1475 | .config_init = genphy_config_init, |
c242a472 SH |
1476 | .features = PHY_GBIT_FEATURES | SUPPORTED_MII | |
1477 | SUPPORTED_AUI | SUPPORTED_FIBRE | | |
1478 | SUPPORTED_BNC, | |
e1393456 | 1479 | .config_aneg = genphy_config_aneg, |
76a423a3 | 1480 | .aneg_done = genphy_aneg_done, |
e1393456 | 1481 | .read_status = genphy_read_status, |
0f0ca340 GC |
1482 | .suspend = genphy_suspend, |
1483 | .resume = genphy_resume, | |
e109374f | 1484 | .driver = { .owner = THIS_MODULE, }, |
124059fd AF |
1485 | }, { |
1486 | .phy_id = 0xffffffff, | |
1487 | .phy_id_mask = 0xffffffff, | |
1488 | .name = "Generic 10G PHY", | |
9df81dd7 | 1489 | .soft_reset = gen10g_soft_reset, |
124059fd AF |
1490 | .config_init = gen10g_config_init, |
1491 | .features = 0, | |
1492 | .config_aneg = gen10g_config_aneg, | |
1493 | .read_status = gen10g_read_status, | |
1494 | .suspend = gen10g_suspend, | |
1495 | .resume = gen10g_resume, | |
1496 | .driver = {.owner = THIS_MODULE, }, | |
ab2145ed | 1497 | } }; |
00db8189 | 1498 | |
67c4f3fa | 1499 | static int __init phy_init(void) |
00db8189 | 1500 | { |
67c4f3fa | 1501 | int rc; |
67c4f3fa JG |
1502 | |
1503 | rc = mdio_bus_init(); | |
1504 | if (rc) | |
e1393456 | 1505 | return rc; |
00db8189 | 1506 | |
ab2145ed SX |
1507 | rc = phy_drivers_register(genphy_driver, |
1508 | ARRAY_SIZE(genphy_driver)); | |
e1393456 AF |
1509 | if (rc) |
1510 | mdio_bus_exit(); | |
67c4f3fa | 1511 | |
67c4f3fa | 1512 | return rc; |
00db8189 AF |
1513 | } |
1514 | ||
67c4f3fa | 1515 | static void __exit phy_exit(void) |
00db8189 | 1516 | { |
ab2145ed SX |
1517 | phy_drivers_unregister(genphy_driver, |
1518 | ARRAY_SIZE(genphy_driver)); | |
e1393456 | 1519 | mdio_bus_exit(); |
00db8189 AF |
1520 | } |
1521 | ||
e1393456 | 1522 | subsys_initcall(phy_init); |
67c4f3fa | 1523 | module_exit(phy_exit); |