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55716d26 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
8bc487d1 GL |
2 | /* |
3 | * OF helpers for the MDIO (Ethernet PHY) API | |
4 | * | |
5 | * Copyright (c) 2009 Secret Lab Technologies, Ltd. | |
6 | * | |
8bc487d1 GL |
7 | * This file provides helper functions for extracting PHY device information |
8 | * out of the OpenFirmware device tree and using it to populate an mii_bus. | |
9 | */ | |
10 | ||
24c30dbb AV |
11 | #include <linux/kernel.h> |
12 | #include <linux/device.h> | |
13 | #include <linux/netdevice.h> | |
14 | #include <linux/err.h> | |
8bc487d1 | 15 | #include <linux/phy.h> |
3be2a49e | 16 | #include <linux/phy_fixed.h> |
8bc487d1 | 17 | #include <linux/of.h> |
e3873444 | 18 | #include <linux/of_irq.h> |
8bc487d1 | 19 | #include <linux/of_mdio.h> |
b7862412 | 20 | #include <linux/of_net.h> |
8bc487d1 GL |
21 | #include <linux/module.h> |
22 | ||
69226896 RQ |
23 | #define DEFAULT_GPIO_RESET_DELAY 10 /* in microseconds */ |
24 | ||
8bc487d1 GL |
25 | MODULE_AUTHOR("Grant Likely <grant.likely@secretlab.ca>"); |
26 | MODULE_LICENSE("GPL"); | |
27 | ||
3c6f5592 JG |
28 | /* Extract the clause 22 phy ID from the compatible string of the form |
29 | * ethernet-phy-idAAAA.BBBB */ | |
30 | static int of_get_phy_id(struct device_node *device, u32 *phy_id) | |
31 | { | |
32 | struct property *prop; | |
33 | const char *cp; | |
34 | unsigned int upper, lower; | |
35 | ||
36 | of_property_for_each_string(device, "compatible", prop, cp) { | |
37 | if (sscanf(cp, "ethernet-phy-id%4x.%4x", &upper, &lower) == 2) { | |
38 | *phy_id = ((upper & 0xFFFF) << 16) | (lower & 0xFFFF); | |
39 | return 0; | |
40 | } | |
41 | } | |
42 | return -EINVAL; | |
43 | } | |
44 | ||
1dca22b1 RC |
45 | static struct mii_timestamper *of_find_mii_timestamper(struct device_node *node) |
46 | { | |
47 | struct of_phandle_args arg; | |
48 | int err; | |
49 | ||
50 | err = of_parse_phandle_with_fixed_args(node, "timestamper", 1, 0, &arg); | |
51 | ||
52 | if (err == -ENOENT) | |
53 | return NULL; | |
54 | else if (err) | |
55 | return ERR_PTR(err); | |
56 | ||
57 | if (arg.args_count != 1) | |
58 | return ERR_PTR(-EINVAL); | |
59 | ||
60 | return register_mii_timestamper(arg.np, arg.args[0]); | |
61 | } | |
62 | ||
66bdede4 | 63 | static int of_mdiobus_register_phy(struct mii_bus *mdio, |
b520bd07 | 64 | struct device_node *child, u32 addr) |
2e79cb30 | 65 | { |
1dca22b1 | 66 | struct mii_timestamper *mii_ts; |
2e79cb30 FF |
67 | struct phy_device *phy; |
68 | bool is_c45; | |
f15c586d | 69 | int rc; |
3c6f5592 | 70 | u32 phy_id; |
2e79cb30 | 71 | |
1dca22b1 RC |
72 | mii_ts = of_find_mii_timestamper(child); |
73 | if (IS_ERR(mii_ts)) | |
74 | return PTR_ERR(mii_ts); | |
75 | ||
2e79cb30 FF |
76 | is_c45 = of_device_is_compatible(child, |
77 | "ethernet-phy-ieee802.3-c45"); | |
78 | ||
3c6f5592 JG |
79 | if (!is_c45 && !of_get_phy_id(child, &phy_id)) |
80 | phy = phy_device_create(mdio, addr, phy_id, 0, NULL); | |
81 | else | |
82 | phy = get_phy_device(mdio, addr, is_c45); | |
1dca22b1 | 83 | if (IS_ERR(phy)) { |
0e0daf6a MW |
84 | if (mii_ts) |
85 | unregister_mii_timestamper(mii_ts); | |
66bdede4 | 86 | return PTR_ERR(phy); |
1dca22b1 | 87 | } |
2e79cb30 | 88 | |
66bdede4 GU |
89 | rc = of_irq_get(child, 0); |
90 | if (rc == -EPROBE_DEFER) { | |
0e0daf6a MW |
91 | if (mii_ts) |
92 | unregister_mii_timestamper(mii_ts); | |
66bdede4 GU |
93 | phy_device_free(phy); |
94 | return rc; | |
95 | } | |
f15c586d BD |
96 | if (rc > 0) { |
97 | phy->irq = rc; | |
1bc16add | 98 | mdio->irq[addr] = rc; |
f15c586d | 99 | } else { |
1bc16add | 100 | phy->irq = mdio->irq[addr]; |
2e79cb30 FF |
101 | } |
102 | ||
ab6016e0 FF |
103 | if (of_property_read_bool(child, "broken-turn-around")) |
104 | mdio->phy_ignore_ta_mask |= 1 << addr; | |
105 | ||
04f629f7 RL |
106 | of_property_read_u32(child, "reset-assert-us", |
107 | &phy->mdio.reset_assert_delay); | |
108 | of_property_read_u32(child, "reset-deassert-us", | |
109 | &phy->mdio.reset_deassert_delay); | |
3a30ae6e | 110 | |
2e79cb30 FF |
111 | /* Associate the OF node with the device structure so it |
112 | * can be looked up later */ | |
113 | of_node_get(child); | |
e5a03bfd | 114 | phy->mdio.dev.of_node = child; |
94a5ef1b | 115 | phy->mdio.dev.fwnode = of_fwnode_handle(child); |
2e79cb30 FF |
116 | |
117 | /* All data is now stored in the phy struct; | |
118 | * register it */ | |
119 | rc = phy_device_register(phy); | |
120 | if (rc) { | |
0e0daf6a MW |
121 | if (mii_ts) |
122 | unregister_mii_timestamper(mii_ts); | |
2e79cb30 FF |
123 | phy_device_free(phy); |
124 | of_node_put(child); | |
66bdede4 | 125 | return rc; |
2e79cb30 | 126 | } |
2e1bf3a7 MW |
127 | |
128 | /* phy->mii_ts may already be defined by the PHY driver. A | |
129 | * mii_timestamper probed via the device tree will still have | |
130 | * precedence. | |
131 | */ | |
132 | if (mii_ts) | |
133 | phy->mii_ts = mii_ts; | |
2e79cb30 | 134 | |
a613b26a RH |
135 | dev_dbg(&mdio->dev, "registered phy %pOFn at address %i\n", |
136 | child, addr); | |
66bdede4 | 137 | return 0; |
2e79cb30 FF |
138 | } |
139 | ||
66bdede4 GU |
140 | static int of_mdiobus_register_device(struct mii_bus *mdio, |
141 | struct device_node *child, u32 addr) | |
a9049e0c AL |
142 | { |
143 | struct mdio_device *mdiodev; | |
144 | int rc; | |
145 | ||
146 | mdiodev = mdio_device_create(mdio, addr); | |
a3478bae | 147 | if (IS_ERR(mdiodev)) |
66bdede4 | 148 | return PTR_ERR(mdiodev); |
a9049e0c AL |
149 | |
150 | /* Associate the OF node with the device structure so it | |
151 | * can be looked up later. | |
152 | */ | |
153 | of_node_get(child); | |
154 | mdiodev->dev.of_node = child; | |
94a5ef1b | 155 | mdiodev->dev.fwnode = of_fwnode_handle(child); |
a9049e0c AL |
156 | |
157 | /* All data is now stored in the mdiodev struct; register it. */ | |
158 | rc = mdio_device_register(mdiodev); | |
159 | if (rc) { | |
160 | mdio_device_free(mdiodev); | |
161 | of_node_put(child); | |
66bdede4 | 162 | return rc; |
a9049e0c AL |
163 | } |
164 | ||
a613b26a RH |
165 | dev_dbg(&mdio->dev, "registered mdio device %pOFn at address %i\n", |
166 | child, addr); | |
66bdede4 | 167 | return 0; |
a9049e0c AL |
168 | } |
169 | ||
ae461131 AL |
170 | /* The following is a list of PHY compatible strings which appear in |
171 | * some DTBs. The compatible string is never matched against a PHY | |
172 | * driver, so is pointless. We only expect devices which are not PHYs | |
173 | * to have a compatible string, so they can be matched to an MDIO | |
174 | * driver. Encourage users to upgrade their DT blobs to remove these. | |
175 | */ | |
176 | static const struct of_device_id whitelist_phys[] = { | |
177 | { .compatible = "brcm,40nm-ephy" }, | |
7e1392fb | 178 | { .compatible = "broadcom,bcm5241" }, |
ae461131 AL |
179 | { .compatible = "marvell,88E1111", }, |
180 | { .compatible = "marvell,88e1116", }, | |
181 | { .compatible = "marvell,88e1118", }, | |
f5a952c0 | 182 | { .compatible = "marvell,88e1145", }, |
ae461131 AL |
183 | { .compatible = "marvell,88e1149r", }, |
184 | { .compatible = "marvell,88e1310", }, | |
185 | { .compatible = "marvell,88E1510", }, | |
186 | { .compatible = "marvell,88E1514", }, | |
187 | { .compatible = "moxa,moxart-rtl8201cp", }, | |
188 | {} | |
189 | }; | |
190 | ||
801a8ef5 AL |
191 | /* |
192 | * Return true if the child node is for a phy. It must either: | |
193 | * o Compatible string of "ethernet-phy-idX.X" | |
194 | * o Compatible string of "ethernet-phy-ieee802.3-c45" | |
195 | * o Compatible string of "ethernet-phy-ieee802.3-c22" | |
ae461131 | 196 | * o In the white list above (and issue a warning) |
801a8ef5 AL |
197 | * o No compatibility string |
198 | * | |
199 | * A device which is not a phy is expected to have a compatible string | |
200 | * indicating what sort of device it is. | |
201 | */ | |
0aa4d016 | 202 | bool of_mdiobus_child_is_phy(struct device_node *child) |
801a8ef5 AL |
203 | { |
204 | u32 phy_id; | |
205 | ||
206 | if (of_get_phy_id(child, &phy_id) != -EINVAL) | |
207 | return true; | |
208 | ||
209 | if (of_device_is_compatible(child, "ethernet-phy-ieee802.3-c45")) | |
210 | return true; | |
211 | ||
212 | if (of_device_is_compatible(child, "ethernet-phy-ieee802.3-c22")) | |
213 | return true; | |
214 | ||
ae461131 AL |
215 | if (of_match_node(whitelist_phys, child)) { |
216 | pr_warn(FW_WARN | |
0d638a07 RH |
217 | "%pOF: Whitelisted compatible string. Please remove\n", |
218 | child); | |
ae461131 AL |
219 | return true; |
220 | } | |
221 | ||
801a8ef5 AL |
222 | if (!of_find_property(child, "compatible", NULL)) |
223 | return true; | |
224 | ||
225 | return false; | |
226 | } | |
0aa4d016 | 227 | EXPORT_SYMBOL(of_mdiobus_child_is_phy); |
801a8ef5 | 228 | |
8bc487d1 GL |
229 | /** |
230 | * of_mdiobus_register - Register mii_bus and create PHYs from the device tree | |
231 | * @mdio: pointer to mii_bus structure | |
232 | * @np: pointer to device_node of MDIO bus. | |
233 | * | |
234 | * This function registers the mii_bus structure and registers a phy_device | |
235 | * for each child node of @np. | |
236 | */ | |
237 | int of_mdiobus_register(struct mii_bus *mdio, struct device_node *np) | |
238 | { | |
8bc487d1 | 239 | struct device_node *child; |
2e79cb30 | 240 | bool scanphys = false; |
e7f4dc35 | 241 | int addr, rc; |
8bc487d1 | 242 | |
6d07a68a FF |
243 | if (!np) |
244 | return mdiobus_register(mdio); | |
245 | ||
a77f4f70 FF |
246 | /* Do not continue if the node is disabled */ |
247 | if (!of_device_is_available(np)) | |
248 | return -ENODEV; | |
249 | ||
8bc487d1 GL |
250 | /* Mask out all PHYs from auto probing. Instead the PHYs listed in |
251 | * the device tree are populated after the bus has been registered */ | |
252 | mdio->phy_mask = ~0; | |
253 | ||
25106022 | 254 | mdio->dev.of_node = np; |
94a5ef1b | 255 | mdio->dev.fwnode = of_fwnode_handle(np); |
25106022 | 256 | |
69226896 RQ |
257 | /* Get bus level PHY reset GPIO details */ |
258 | mdio->reset_delay_us = DEFAULT_GPIO_RESET_DELAY; | |
259 | of_property_read_u32(np, "reset-delay-us", &mdio->reset_delay_us); | |
69226896 | 260 | |
8bc487d1 GL |
261 | /* Register the MDIO bus */ |
262 | rc = mdiobus_register(mdio); | |
263 | if (rc) | |
264 | return rc; | |
265 | ||
801a8ef5 | 266 | /* Loop over the child nodes and register a phy_device for each phy */ |
e207e761 | 267 | for_each_available_child_of_node(np, child) { |
8f838288 DM |
268 | addr = of_mdio_parse_addr(&mdio->dev, child); |
269 | if (addr < 0) { | |
779d835e | 270 | scanphys = true; |
19458860 DD |
271 | continue; |
272 | } | |
273 | ||
801a8ef5 | 274 | if (of_mdiobus_child_is_phy(child)) |
66bdede4 | 275 | rc = of_mdiobus_register_phy(mdio, child, addr); |
a9049e0c | 276 | else |
66bdede4 | 277 | rc = of_mdiobus_register_device(mdio, child, addr); |
95f566de MB |
278 | |
279 | if (rc == -ENODEV) | |
280 | dev_err(&mdio->dev, | |
281 | "MDIO device at address %d is missing.\n", | |
282 | addr); | |
283 | else if (rc) | |
66bdede4 | 284 | goto unregister; |
8bc487d1 GL |
285 | } |
286 | ||
779d835e SH |
287 | if (!scanphys) |
288 | return 0; | |
289 | ||
290 | /* auto scan for PHYs with empty reg property */ | |
291 | for_each_available_child_of_node(np, child) { | |
292 | /* Skip PHYs with reg property set */ | |
2fca6d28 | 293 | if (of_find_property(child, "reg", NULL)) |
779d835e SH |
294 | continue; |
295 | ||
779d835e SH |
296 | for (addr = 0; addr < PHY_MAX_ADDR; addr++) { |
297 | /* skip already registered PHYs */ | |
7f854420 | 298 | if (mdiobus_is_registered_device(mdio, addr)) |
779d835e SH |
299 | continue; |
300 | ||
301 | /* be noisy to encourage people to set reg property */ | |
a613b26a RH |
302 | dev_info(&mdio->dev, "scan phy %pOFn at address %i\n", |
303 | child, addr); | |
779d835e | 304 | |
66bdede4 GU |
305 | if (of_mdiobus_child_is_phy(child)) { |
306 | rc = of_mdiobus_register_phy(mdio, child, addr); | |
95f566de | 307 | if (rc && rc != -ENODEV) |
66bdede4 | 308 | goto unregister; |
209c65b6 | 309 | break; |
66bdede4 | 310 | } |
779d835e SH |
311 | } |
312 | } | |
313 | ||
8bc487d1 | 314 | return 0; |
66bdede4 GU |
315 | |
316 | unregister: | |
317 | mdiobus_unregister(mdio); | |
318 | return rc; | |
8bc487d1 GL |
319 | } |
320 | EXPORT_SYMBOL(of_mdiobus_register); | |
321 | ||
322 | /** | |
323 | * of_phy_find_device - Give a PHY node, find the phy_device | |
324 | * @phy_np: Pointer to the phy's device tree node | |
325 | * | |
f018ae7a RK |
326 | * If successful, returns a pointer to the phy_device with the embedded |
327 | * struct device refcount incremented by one, or NULL on failure. | |
8bc487d1 GL |
328 | */ |
329 | struct phy_device *of_phy_find_device(struct device_node *phy_np) | |
330 | { | |
331 | struct device *d; | |
6ed74236 AL |
332 | struct mdio_device *mdiodev; |
333 | ||
8bc487d1 GL |
334 | if (!phy_np) |
335 | return NULL; | |
336 | ||
cfba5de9 | 337 | d = bus_find_device_by_of_node(&mdio_bus_type, phy_np); |
6ed74236 AL |
338 | if (d) { |
339 | mdiodev = to_mdio_device(d); | |
340 | if (mdiodev->flags & MDIO_DEVICE_FLAG_PHY) | |
341 | return to_phy_device(d); | |
3ae30f4c | 342 | put_device(d); |
6ed74236 AL |
343 | } |
344 | ||
345 | return NULL; | |
8bc487d1 GL |
346 | } |
347 | EXPORT_SYMBOL(of_phy_find_device); | |
348 | ||
349 | /** | |
350 | * of_phy_connect - Connect to the phy described in the device tree | |
351 | * @dev: pointer to net_device claiming the phy | |
352 | * @phy_np: Pointer to device tree node for the PHY | |
353 | * @hndlr: Link state callback for the network device | |
735c1e25 | 354 | * @flags: flags to pass to the PHY |
8bc487d1 GL |
355 | * @iface: PHY data interface type |
356 | * | |
f018ae7a RK |
357 | * If successful, returns a pointer to the phy_device with the embedded |
358 | * struct device refcount incremented by one, or NULL on failure. The | |
359 | * refcount must be dropped by calling phy_disconnect() or phy_detach(). | |
8bc487d1 GL |
360 | */ |
361 | struct phy_device *of_phy_connect(struct net_device *dev, | |
362 | struct device_node *phy_np, | |
363 | void (*hndlr)(struct net_device *), u32 flags, | |
364 | phy_interface_t iface) | |
365 | { | |
366 | struct phy_device *phy = of_phy_find_device(phy_np); | |
f018ae7a | 367 | int ret; |
8bc487d1 GL |
368 | |
369 | if (!phy) | |
370 | return NULL; | |
371 | ||
2f637151 FF |
372 | phy->dev_flags = flags; |
373 | ||
f018ae7a RK |
374 | ret = phy_connect_direct(dev, phy, hndlr, iface); |
375 | ||
376 | /* refcount is held by phy_connect_direct() on success */ | |
e5a03bfd | 377 | put_device(&phy->mdio.dev); |
f018ae7a RK |
378 | |
379 | return ret ? NULL : phy; | |
8bc487d1 GL |
380 | } |
381 | EXPORT_SYMBOL(of_phy_connect); | |
24c30dbb | 382 | |
b7862412 DL |
383 | /** |
384 | * of_phy_get_and_connect | |
385 | * - Get phy node and connect to the phy described in the device tree | |
386 | * @dev: pointer to net_device claiming the phy | |
387 | * @np: Pointer to device tree node for the net_device claiming the phy | |
388 | * @hndlr: Link state callback for the network device | |
389 | * | |
390 | * If successful, returns a pointer to the phy_device with the embedded | |
391 | * struct device refcount incremented by one, or NULL on failure. The | |
392 | * refcount must be dropped by calling phy_disconnect() or phy_detach(). | |
393 | */ | |
394 | struct phy_device *of_phy_get_and_connect(struct net_device *dev, | |
395 | struct device_node *np, | |
396 | void (*hndlr)(struct net_device *)) | |
397 | { | |
398 | phy_interface_t iface; | |
399 | struct device_node *phy_np; | |
400 | struct phy_device *phy; | |
6eb9c9da | 401 | int ret; |
b7862412 | 402 | |
0c65b2b9 AL |
403 | ret = of_get_phy_mode(np, &iface); |
404 | if (ret) | |
b7862412 | 405 | return NULL; |
6eb9c9da LW |
406 | if (of_phy_is_fixed_link(np)) { |
407 | ret = of_phy_register_fixed_link(np); | |
408 | if (ret < 0) { | |
409 | netdev_err(dev, "broken fixed-link specification\n"); | |
410 | return NULL; | |
411 | } | |
412 | phy_np = of_node_get(np); | |
413 | } else { | |
414 | phy_np = of_parse_phandle(np, "phy-handle", 0); | |
415 | if (!phy_np) | |
416 | return NULL; | |
417 | } | |
b7862412 DL |
418 | |
419 | phy = of_phy_connect(dev, phy_np, hndlr, 0, iface); | |
420 | ||
421 | of_node_put(phy_np); | |
422 | ||
423 | return phy; | |
424 | } | |
425 | EXPORT_SYMBOL(of_phy_get_and_connect); | |
426 | ||
7614aba6 AF |
427 | /** |
428 | * of_phy_attach - Attach to a PHY without starting the state machine | |
429 | * @dev: pointer to net_device claiming the phy | |
430 | * @phy_np: Node pointer for the PHY | |
431 | * @flags: flags to pass to the PHY | |
432 | * @iface: PHY data interface type | |
f018ae7a RK |
433 | * |
434 | * If successful, returns a pointer to the phy_device with the embedded | |
435 | * struct device refcount incremented by one, or NULL on failure. The | |
436 | * refcount must be dropped by calling phy_disconnect() or phy_detach(). | |
7614aba6 AF |
437 | */ |
438 | struct phy_device *of_phy_attach(struct net_device *dev, | |
439 | struct device_node *phy_np, u32 flags, | |
440 | phy_interface_t iface) | |
441 | { | |
442 | struct phy_device *phy = of_phy_find_device(phy_np); | |
f018ae7a | 443 | int ret; |
7614aba6 AF |
444 | |
445 | if (!phy) | |
446 | return NULL; | |
447 | ||
f018ae7a RK |
448 | ret = phy_attach_direct(dev, phy, flags, iface); |
449 | ||
450 | /* refcount is held by phy_attach_direct() on success */ | |
e5a03bfd | 451 | put_device(&phy->mdio.dev); |
f018ae7a RK |
452 | |
453 | return ret ? NULL : phy; | |
7614aba6 AF |
454 | } |
455 | EXPORT_SYMBOL(of_phy_attach); | |
3be2a49e | 456 | |
3be2a49e TP |
457 | /* |
458 | * of_phy_is_fixed_link() and of_phy_register_fixed_link() must | |
459 | * support two DT bindings: | |
460 | * - the old DT binding, where 'fixed-link' was a property with 5 | |
461 | * cells encoding various informations about the fixed PHY | |
462 | * - the new DT binding, where 'fixed-link' is a sub-node of the | |
463 | * Ethernet device. | |
464 | */ | |
465 | bool of_phy_is_fixed_link(struct device_node *np) | |
466 | { | |
467 | struct device_node *dn; | |
4cba5c21 SS |
468 | int len, err; |
469 | const char *managed; | |
3be2a49e TP |
470 | |
471 | /* New binding */ | |
472 | dn = of_get_child_by_name(np, "fixed-link"); | |
473 | if (dn) { | |
474 | of_node_put(dn); | |
475 | return true; | |
476 | } | |
477 | ||
4cba5c21 SS |
478 | err = of_property_read_string(np, "managed", &managed); |
479 | if (err == 0 && strcmp(managed, "auto") != 0) | |
480 | return true; | |
481 | ||
3be2a49e TP |
482 | /* Old binding */ |
483 | if (of_get_property(np, "fixed-link", &len) && | |
484 | len == (5 * sizeof(__be32))) | |
485 | return true; | |
486 | ||
487 | return false; | |
488 | } | |
489 | EXPORT_SYMBOL(of_phy_is_fixed_link); | |
490 | ||
491 | int of_phy_register_fixed_link(struct device_node *np) | |
492 | { | |
493 | struct fixed_phy_status status = {}; | |
494 | struct device_node *fixed_link_node; | |
d226a2b8 | 495 | u32 fixed_link_prop[5]; |
4cba5c21 SS |
496 | const char *managed; |
497 | ||
5a7a8346 SS |
498 | if (of_property_read_string(np, "managed", &managed) == 0 && |
499 | strcmp(managed, "in-band-status") == 0) { | |
500 | /* status is zeroed, namely its .link member */ | |
501 | goto register_phy; | |
4cba5c21 | 502 | } |
3be2a49e TP |
503 | |
504 | /* New binding */ | |
505 | fixed_link_node = of_get_child_by_name(np, "fixed-link"); | |
506 | if (fixed_link_node) { | |
507 | status.link = 1; | |
a72e1541 RR |
508 | status.duplex = of_property_read_bool(fixed_link_node, |
509 | "full-duplex"); | |
48c1699d JH |
510 | if (of_property_read_u32(fixed_link_node, "speed", |
511 | &status.speed)) { | |
512 | of_node_put(fixed_link_node); | |
3be2a49e | 513 | return -EINVAL; |
48c1699d | 514 | } |
a72e1541 RR |
515 | status.pause = of_property_read_bool(fixed_link_node, "pause"); |
516 | status.asym_pause = of_property_read_bool(fixed_link_node, | |
517 | "asym-pause"); | |
3be2a49e | 518 | of_node_put(fixed_link_node); |
a5597008 | 519 | |
5a7a8346 | 520 | goto register_phy; |
3be2a49e TP |
521 | } |
522 | ||
523 | /* Old binding */ | |
d226a2b8 SS |
524 | if (of_property_read_u32_array(np, "fixed-link", fixed_link_prop, |
525 | ARRAY_SIZE(fixed_link_prop)) == 0) { | |
3be2a49e | 526 | status.link = 1; |
d226a2b8 SS |
527 | status.duplex = fixed_link_prop[1]; |
528 | status.speed = fixed_link_prop[2]; | |
529 | status.pause = fixed_link_prop[3]; | |
530 | status.asym_pause = fixed_link_prop[4]; | |
5a7a8346 | 531 | goto register_phy; |
3be2a49e TP |
532 | } |
533 | ||
534 | return -ENODEV; | |
5a7a8346 SS |
535 | |
536 | register_phy: | |
5468e82f | 537 | return PTR_ERR_OR_ZERO(fixed_phy_register(PHY_POLL, &status, np)); |
3be2a49e TP |
538 | } |
539 | EXPORT_SYMBOL(of_phy_register_fixed_link); | |
3f65047c JH |
540 | |
541 | void of_phy_deregister_fixed_link(struct device_node *np) | |
542 | { | |
543 | struct phy_device *phydev; | |
544 | ||
545 | phydev = of_phy_find_device(np); | |
546 | if (!phydev) | |
547 | return; | |
548 | ||
549 | fixed_phy_unregister(phydev); | |
550 | ||
551 | put_device(&phydev->mdio.dev); /* of_phy_find_device() */ | |
552 | phy_device_free(phydev); /* fixed_phy_register() */ | |
553 | } | |
554 | EXPORT_SYMBOL(of_phy_deregister_fixed_link); |