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10#include <linux/kernel.h>
11#include <linux/export.h>
12#include <linux/module.h>
13#include <linux/err.h>
14#include <linux/device.h>
15#include <linux/slab.h>
16#include <linux/of.h>
17#include <linux/phy/phy.h>
18#include <linux/idr.h>
19#include <linux/pm_runtime.h>
20#include <linux/regulator/consumer.h>
21
22static struct class *phy_class;
23static DEFINE_MUTEX(phy_provider_mutex);
24static LIST_HEAD(phy_provider_list);
25static LIST_HEAD(phys);
26static DEFINE_IDA(phy_ida);
27
28static void devm_phy_release(struct device *dev, void *res)
29{
30 struct phy *phy = *(struct phy **)res;
31
32 phy_put(phy);
33}
34
35static void devm_phy_provider_release(struct device *dev, void *res)
36{
37 struct phy_provider *phy_provider = *(struct phy_provider **)res;
38
39 of_phy_provider_unregister(phy_provider);
40}
41
42static void devm_phy_consume(struct device *dev, void *res)
43{
44 struct phy *phy = *(struct phy **)res;
45
46 phy_destroy(phy);
47}
48
49static int devm_phy_match(struct device *dev, void *res, void *match_data)
50{
51 struct phy **phy = res;
52
53 return *phy == match_data;
54}
55
56
57
58
59
60
61
62
63
64int phy_create_lookup(struct phy *phy, const char *con_id, const char *dev_id)
65{
66 struct phy_lookup *pl;
67
68 if (!phy || !dev_id || !con_id)
69 return -EINVAL;
70
71 pl = kzalloc(sizeof(*pl), GFP_KERNEL);
72 if (!pl)
73 return -ENOMEM;
74
75 pl->dev_id = dev_id;
76 pl->con_id = con_id;
77 pl->phy = phy;
78
79 mutex_lock(&phy_provider_mutex);
80 list_add_tail(&pl->node, &phys);
81 mutex_unlock(&phy_provider_mutex);
82
83 return 0;
84}
85EXPORT_SYMBOL_GPL(phy_create_lookup);
86
87
88
89
90
91
92
93
94
95
96void phy_remove_lookup(struct phy *phy, const char *con_id, const char *dev_id)
97{
98 struct phy_lookup *pl;
99
100 if (!phy || !dev_id || !con_id)
101 return;
102
103 mutex_lock(&phy_provider_mutex);
104 list_for_each_entry(pl, &phys, node)
105 if (pl->phy == phy && !strcmp(pl->dev_id, dev_id) &&
106 !strcmp(pl->con_id, con_id)) {
107 list_del(&pl->node);
108 kfree(pl);
109 break;
110 }
111 mutex_unlock(&phy_provider_mutex);
112}
113EXPORT_SYMBOL_GPL(phy_remove_lookup);
114
115static struct phy *phy_find(struct device *dev, const char *con_id)
116{
117 const char *dev_id = dev_name(dev);
118 struct phy_lookup *p, *pl = NULL;
119
120 mutex_lock(&phy_provider_mutex);
121 list_for_each_entry(p, &phys, node)
122 if (!strcmp(p->dev_id, dev_id) && !strcmp(p->con_id, con_id)) {
123 pl = p;
124 break;
125 }
126 mutex_unlock(&phy_provider_mutex);
127
128 return pl ? pl->phy : ERR_PTR(-ENODEV);
129}
130
131static struct phy_provider *of_phy_provider_lookup(struct device_node *node)
132{
133 struct phy_provider *phy_provider;
134 struct device_node *child;
135
136 list_for_each_entry(phy_provider, &phy_provider_list, list) {
137 if (phy_provider->dev->of_node == node)
138 return phy_provider;
139
140 for_each_child_of_node(phy_provider->children, child)
141 if (child == node)
142 return phy_provider;
143 }
144
145 return ERR_PTR(-EPROBE_DEFER);
146}
147
148int phy_pm_runtime_get(struct phy *phy)
149{
150 int ret;
151
152 if (!phy)
153 return 0;
154
155 if (!pm_runtime_enabled(&phy->dev))
156 return -ENOTSUPP;
157
158 ret = pm_runtime_get(&phy->dev);
159 if (ret < 0 && ret != -EINPROGRESS)
160 pm_runtime_put_noidle(&phy->dev);
161
162 return ret;
163}
164EXPORT_SYMBOL_GPL(phy_pm_runtime_get);
165
166int phy_pm_runtime_get_sync(struct phy *phy)
167{
168 int ret;
169
170 if (!phy)
171 return 0;
172
173 if (!pm_runtime_enabled(&phy->dev))
174 return -ENOTSUPP;
175
176 ret = pm_runtime_get_sync(&phy->dev);
177 if (ret < 0)
178 pm_runtime_put_sync(&phy->dev);
179
180 return ret;
181}
182EXPORT_SYMBOL_GPL(phy_pm_runtime_get_sync);
183
184int phy_pm_runtime_put(struct phy *phy)
185{
186 if (!phy)
187 return 0;
188
189 if (!pm_runtime_enabled(&phy->dev))
190 return -ENOTSUPP;
191
192 return pm_runtime_put(&phy->dev);
193}
194EXPORT_SYMBOL_GPL(phy_pm_runtime_put);
195
196int phy_pm_runtime_put_sync(struct phy *phy)
197{
198 if (!phy)
199 return 0;
200
201 if (!pm_runtime_enabled(&phy->dev))
202 return -ENOTSUPP;
203
204 return pm_runtime_put_sync(&phy->dev);
205}
206EXPORT_SYMBOL_GPL(phy_pm_runtime_put_sync);
207
208void phy_pm_runtime_allow(struct phy *phy)
209{
210 if (!phy)
211 return;
212
213 if (!pm_runtime_enabled(&phy->dev))
214 return;
215
216 pm_runtime_allow(&phy->dev);
217}
218EXPORT_SYMBOL_GPL(phy_pm_runtime_allow);
219
220void phy_pm_runtime_forbid(struct phy *phy)
221{
222 if (!phy)
223 return;
224
225 if (!pm_runtime_enabled(&phy->dev))
226 return;
227
228 pm_runtime_forbid(&phy->dev);
229}
230EXPORT_SYMBOL_GPL(phy_pm_runtime_forbid);
231
232int phy_init(struct phy *phy)
233{
234 int ret;
235
236 if (!phy)
237 return 0;
238
239 ret = phy_pm_runtime_get_sync(phy);
240 if (ret < 0 && ret != -ENOTSUPP)
241 return ret;
242 ret = 0;
243
244 mutex_lock(&phy->mutex);
245 if (phy->init_count == 0 && phy->ops->init) {
246 ret = phy->ops->init(phy);
247 if (ret < 0) {
248 dev_err(&phy->dev, "phy init failed --> %d\n", ret);
249 goto out;
250 }
251 }
252 ++phy->init_count;
253
254out:
255 mutex_unlock(&phy->mutex);
256 phy_pm_runtime_put(phy);
257 return ret;
258}
259EXPORT_SYMBOL_GPL(phy_init);
260
261int phy_exit(struct phy *phy)
262{
263 int ret;
264
265 if (!phy)
266 return 0;
267
268 ret = phy_pm_runtime_get_sync(phy);
269 if (ret < 0 && ret != -ENOTSUPP)
270 return ret;
271 ret = 0;
272
273 mutex_lock(&phy->mutex);
274 if (phy->init_count == 1 && phy->ops->exit) {
275 ret = phy->ops->exit(phy);
276 if (ret < 0) {
277 dev_err(&phy->dev, "phy exit failed --> %d\n", ret);
278 goto out;
279 }
280 }
281 --phy->init_count;
282
283out:
284 mutex_unlock(&phy->mutex);
285 phy_pm_runtime_put(phy);
286 return ret;
287}
288EXPORT_SYMBOL_GPL(phy_exit);
289
290int phy_power_on(struct phy *phy)
291{
292 int ret = 0;
293
294 if (!phy)
295 goto out;
296
297 if (phy->pwr) {
298 ret = regulator_enable(phy->pwr);
299 if (ret)
300 goto out;
301 }
302
303 ret = phy_pm_runtime_get_sync(phy);
304 if (ret < 0 && ret != -ENOTSUPP)
305 goto err_pm_sync;
306
307 ret = 0;
308
309 mutex_lock(&phy->mutex);
310 if (phy->power_count == 0 && phy->ops->power_on) {
311 ret = phy->ops->power_on(phy);
312 if (ret < 0) {
313 dev_err(&phy->dev, "phy poweron failed --> %d\n", ret);
314 goto err_pwr_on;
315 }
316 }
317 ++phy->power_count;
318 mutex_unlock(&phy->mutex);
319 return 0;
320
321err_pwr_on:
322 mutex_unlock(&phy->mutex);
323 phy_pm_runtime_put_sync(phy);
324err_pm_sync:
325 if (phy->pwr)
326 regulator_disable(phy->pwr);
327out:
328 return ret;
329}
330EXPORT_SYMBOL_GPL(phy_power_on);
331
332int phy_power_off(struct phy *phy)
333{
334 int ret;
335
336 if (!phy)
337 return 0;
338
339 mutex_lock(&phy->mutex);
340 if (phy->power_count == 1 && phy->ops->power_off) {
341 ret = phy->ops->power_off(phy);
342 if (ret < 0) {
343 dev_err(&phy->dev, "phy poweroff failed --> %d\n", ret);
344 mutex_unlock(&phy->mutex);
345 return ret;
346 }
347 }
348 --phy->power_count;
349 mutex_unlock(&phy->mutex);
350 phy_pm_runtime_put(phy);
351
352 if (phy->pwr)
353 regulator_disable(phy->pwr);
354
355 return 0;
356}
357EXPORT_SYMBOL_GPL(phy_power_off);
358
359int phy_set_mode_ext(struct phy *phy, enum phy_mode mode, int submode)
360{
361 int ret;
362
363 if (!phy || !phy->ops->set_mode)
364 return 0;
365
366 mutex_lock(&phy->mutex);
367 ret = phy->ops->set_mode(phy, mode, submode);
368 if (!ret)
369 phy->attrs.mode = mode;
370 mutex_unlock(&phy->mutex);
371
372 return ret;
373}
374EXPORT_SYMBOL_GPL(phy_set_mode_ext);
375
376int phy_reset(struct phy *phy)
377{
378 int ret;
379
380 if (!phy || !phy->ops->reset)
381 return 0;
382
383 ret = phy_pm_runtime_get_sync(phy);
384 if (ret < 0 && ret != -ENOTSUPP)
385 return ret;
386
387 mutex_lock(&phy->mutex);
388 ret = phy->ops->reset(phy);
389 mutex_unlock(&phy->mutex);
390
391 phy_pm_runtime_put(phy);
392
393 return ret;
394}
395EXPORT_SYMBOL_GPL(phy_reset);
396
397int phy_calibrate(struct phy *phy)
398{
399 int ret;
400
401 if (!phy || !phy->ops->calibrate)
402 return 0;
403
404 mutex_lock(&phy->mutex);
405 ret = phy->ops->calibrate(phy);
406 mutex_unlock(&phy->mutex);
407
408 return ret;
409}
410EXPORT_SYMBOL_GPL(phy_calibrate);
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420
421
422
423int phy_configure(struct phy *phy, union phy_configure_opts *opts)
424{
425 int ret;
426
427 if (!phy)
428 return -EINVAL;
429
430 if (!phy->ops->configure)
431 return -EOPNOTSUPP;
432
433 mutex_lock(&phy->mutex);
434 ret = phy->ops->configure(phy, opts);
435 mutex_unlock(&phy->mutex);
436
437 return ret;
438}
439EXPORT_SYMBOL_GPL(phy_configure);
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455
456
457int phy_validate(struct phy *phy, enum phy_mode mode, int submode,
458 union phy_configure_opts *opts)
459{
460 int ret;
461
462 if (!phy)
463 return -EINVAL;
464
465 if (!phy->ops->validate)
466 return -EOPNOTSUPP;
467
468 mutex_lock(&phy->mutex);
469 ret = phy->ops->validate(phy, mode, submode, opts);
470 mutex_unlock(&phy->mutex);
471
472 return ret;
473}
474EXPORT_SYMBOL_GPL(phy_validate);
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484
485
486
487static struct phy *_of_phy_get(struct device_node *np, int index)
488{
489 int ret;
490 struct phy_provider *phy_provider;
491 struct phy *phy = NULL;
492 struct of_phandle_args args;
493
494 ret = of_parse_phandle_with_args(np, "phys", "#phy-cells",
495 index, &args);
496 if (ret)
497 return ERR_PTR(-ENODEV);
498
499
500 if (of_device_is_compatible(args.np, "usb-nop-xceiv"))
501 return ERR_PTR(-ENODEV);
502
503 mutex_lock(&phy_provider_mutex);
504 phy_provider = of_phy_provider_lookup(args.np);
505 if (IS_ERR(phy_provider) || !try_module_get(phy_provider->owner)) {
506 phy = ERR_PTR(-EPROBE_DEFER);
507 goto out_unlock;
508 }
509
510 if (!of_device_is_available(args.np)) {
511 dev_warn(phy_provider->dev, "Requested PHY is disabled\n");
512 phy = ERR_PTR(-ENODEV);
513 goto out_put_module;
514 }
515
516 phy = phy_provider->of_xlate(phy_provider->dev, &args);
517
518out_put_module:
519 module_put(phy_provider->owner);
520
521out_unlock:
522 mutex_unlock(&phy_provider_mutex);
523 of_node_put(args.np);
524
525 return phy;
526}
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535
536
537struct phy *of_phy_get(struct device_node *np, const char *con_id)
538{
539 struct phy *phy = NULL;
540 int index = 0;
541
542 if (con_id)
543 index = of_property_match_string(np, "phy-names", con_id);
544
545 phy = _of_phy_get(np, index);
546 if (IS_ERR(phy))
547 return phy;
548
549 if (!try_module_get(phy->ops->owner))
550 return ERR_PTR(-EPROBE_DEFER);
551
552 get_device(&phy->dev);
553
554 return phy;
555}
556EXPORT_SYMBOL_GPL(of_phy_get);
557
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562
563
564void phy_put(struct phy *phy)
565{
566 if (!phy || IS_ERR(phy))
567 return;
568
569 mutex_lock(&phy->mutex);
570 if (phy->ops->release)
571 phy->ops->release(phy);
572 mutex_unlock(&phy->mutex);
573
574 module_put(phy->ops->owner);
575 put_device(&phy->dev);
576}
577EXPORT_SYMBOL_GPL(phy_put);
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585
586
587void devm_phy_put(struct device *dev, struct phy *phy)
588{
589 int r;
590
591 if (!phy)
592 return;
593
594 r = devres_destroy(dev, devm_phy_release, devm_phy_match, phy);
595 dev_WARN_ONCE(dev, r, "couldn't find PHY resource\n");
596}
597EXPORT_SYMBOL_GPL(devm_phy_put);
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609struct phy *of_phy_simple_xlate(struct device *dev, struct of_phandle_args
610 *args)
611{
612 struct phy *phy;
613 struct class_dev_iter iter;
614
615 class_dev_iter_init(&iter, phy_class, NULL, NULL);
616 while ((dev = class_dev_iter_next(&iter))) {
617 phy = to_phy(dev);
618 if (args->np != phy->dev.of_node)
619 continue;
620
621 class_dev_iter_exit(&iter);
622 return phy;
623 }
624
625 class_dev_iter_exit(&iter);
626 return ERR_PTR(-ENODEV);
627}
628EXPORT_SYMBOL_GPL(of_phy_simple_xlate);
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631
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638
639
640struct phy *phy_get(struct device *dev, const char *string)
641{
642 int index = 0;
643 struct phy *phy;
644
645 if (string == NULL) {
646 dev_WARN(dev, "missing string\n");
647 return ERR_PTR(-EINVAL);
648 }
649
650 if (dev->of_node) {
651 index = of_property_match_string(dev->of_node, "phy-names",
652 string);
653 phy = _of_phy_get(dev->of_node, index);
654 } else {
655 phy = phy_find(dev, string);
656 }
657 if (IS_ERR(phy))
658 return phy;
659
660 if (!try_module_get(phy->ops->owner))
661 return ERR_PTR(-EPROBE_DEFER);
662
663 get_device(&phy->dev);
664
665 return phy;
666}
667EXPORT_SYMBOL_GPL(phy_get);
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678
679struct phy *phy_optional_get(struct device *dev, const char *string)
680{
681 struct phy *phy = phy_get(dev, string);
682
683 if (IS_ERR(phy) && (PTR_ERR(phy) == -ENODEV))
684 phy = NULL;
685
686 return phy;
687}
688EXPORT_SYMBOL_GPL(phy_optional_get);
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698
699
700struct phy *devm_phy_get(struct device *dev, const char *string)
701{
702 struct phy **ptr, *phy;
703
704 ptr = devres_alloc(devm_phy_release, sizeof(*ptr), GFP_KERNEL);
705 if (!ptr)
706 return ERR_PTR(-ENOMEM);
707
708 phy = phy_get(dev, string);
709 if (!IS_ERR(phy)) {
710 *ptr = phy;
711 devres_add(dev, ptr);
712 } else {
713 devres_free(ptr);
714 }
715
716 return phy;
717}
718EXPORT_SYMBOL_GPL(devm_phy_get);
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731
732
733struct phy *devm_phy_optional_get(struct device *dev, const char *string)
734{
735 struct phy *phy = devm_phy_get(dev, string);
736
737 if (IS_ERR(phy) && (PTR_ERR(phy) == -ENODEV))
738 phy = NULL;
739
740 return phy;
741}
742EXPORT_SYMBOL_GPL(devm_phy_optional_get);
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753
754struct phy *devm_of_phy_get(struct device *dev, struct device_node *np,
755 const char *con_id)
756{
757 struct phy **ptr, *phy;
758
759 ptr = devres_alloc(devm_phy_release, sizeof(*ptr), GFP_KERNEL);
760 if (!ptr)
761 return ERR_PTR(-ENOMEM);
762
763 phy = of_phy_get(np, con_id);
764 if (!IS_ERR(phy)) {
765 *ptr = phy;
766 devres_add(dev, ptr);
767 } else {
768 devres_free(ptr);
769 }
770
771 return phy;
772}
773EXPORT_SYMBOL_GPL(devm_of_phy_get);
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786
787struct phy *devm_of_phy_get_by_index(struct device *dev, struct device_node *np,
788 int index)
789{
790 struct phy **ptr, *phy;
791
792 ptr = devres_alloc(devm_phy_release, sizeof(*ptr), GFP_KERNEL);
793 if (!ptr)
794 return ERR_PTR(-ENOMEM);
795
796 phy = _of_phy_get(np, index);
797 if (IS_ERR(phy)) {
798 devres_free(ptr);
799 return phy;
800 }
801
802 if (!try_module_get(phy->ops->owner)) {
803 devres_free(ptr);
804 return ERR_PTR(-EPROBE_DEFER);
805 }
806
807 get_device(&phy->dev);
808
809 *ptr = phy;
810 devres_add(dev, ptr);
811
812 return phy;
813}
814EXPORT_SYMBOL_GPL(devm_of_phy_get_by_index);
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822
823
824struct phy *phy_create(struct device *dev, struct device_node *node,
825 const struct phy_ops *ops)
826{
827 int ret;
828 int id;
829 struct phy *phy;
830
831 if (WARN_ON(!dev))
832 return ERR_PTR(-EINVAL);
833
834 phy = kzalloc(sizeof(*phy), GFP_KERNEL);
835 if (!phy)
836 return ERR_PTR(-ENOMEM);
837
838 id = ida_simple_get(&phy_ida, 0, 0, GFP_KERNEL);
839 if (id < 0) {
840 dev_err(dev, "unable to get id\n");
841 ret = id;
842 goto free_phy;
843 }
844
845 device_initialize(&phy->dev);
846 mutex_init(&phy->mutex);
847
848 phy->dev.class = phy_class;
849 phy->dev.parent = dev;
850 phy->dev.of_node = node ?: dev->of_node;
851 phy->id = id;
852 phy->ops = ops;
853
854 ret = dev_set_name(&phy->dev, "phy-%s.%d", dev_name(dev), id);
855 if (ret)
856 goto put_dev;
857
858
859 phy->pwr = regulator_get_optional(&phy->dev, "phy");
860 if (IS_ERR(phy->pwr)) {
861 ret = PTR_ERR(phy->pwr);
862 if (ret == -EPROBE_DEFER)
863 goto put_dev;
864
865 phy->pwr = NULL;
866 }
867
868 ret = device_add(&phy->dev);
869 if (ret)
870 goto put_dev;
871
872 if (pm_runtime_enabled(dev)) {
873 pm_runtime_enable(&phy->dev);
874 pm_runtime_no_callbacks(&phy->dev);
875 }
876
877 return phy;
878
879put_dev:
880 put_device(&phy->dev);
881 return ERR_PTR(ret);
882
883free_phy:
884 kfree(phy);
885 return ERR_PTR(ret);
886}
887EXPORT_SYMBOL_GPL(phy_create);
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898
899
900struct phy *devm_phy_create(struct device *dev, struct device_node *node,
901 const struct phy_ops *ops)
902{
903 struct phy **ptr, *phy;
904
905 ptr = devres_alloc(devm_phy_consume, sizeof(*ptr), GFP_KERNEL);
906 if (!ptr)
907 return ERR_PTR(-ENOMEM);
908
909 phy = phy_create(dev, node, ops);
910 if (!IS_ERR(phy)) {
911 *ptr = phy;
912 devres_add(dev, ptr);
913 } else {
914 devres_free(ptr);
915 }
916
917 return phy;
918}
919EXPORT_SYMBOL_GPL(devm_phy_create);
920
921
922
923
924
925
926
927void phy_destroy(struct phy *phy)
928{
929 pm_runtime_disable(&phy->dev);
930 device_unregister(&phy->dev);
931}
932EXPORT_SYMBOL_GPL(phy_destroy);
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934
935
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937
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939
940
941
942void devm_phy_destroy(struct device *dev, struct phy *phy)
943{
944 int r;
945
946 r = devres_destroy(dev, devm_phy_consume, devm_phy_match, phy);
947 dev_WARN_ONCE(dev, r, "couldn't find PHY resource\n");
948}
949EXPORT_SYMBOL_GPL(devm_phy_destroy);
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969struct phy_provider *__of_phy_provider_register(struct device *dev,
970 struct device_node *children, struct module *owner,
971 struct phy * (*of_xlate)(struct device *dev,
972 struct of_phandle_args *args))
973{
974 struct phy_provider *phy_provider;
975
976
977
978
979
980
981 if (children) {
982 struct device_node *parent = of_node_get(children), *next;
983
984 while (parent) {
985 if (parent == dev->of_node)
986 break;
987
988 next = of_get_parent(parent);
989 of_node_put(parent);
990 parent = next;
991 }
992
993 if (!parent)
994 return ERR_PTR(-EINVAL);
995
996 of_node_put(parent);
997 } else {
998 children = dev->of_node;
999 }
1000
1001 phy_provider = kzalloc(sizeof(*phy_provider), GFP_KERNEL);
1002 if (!phy_provider)
1003 return ERR_PTR(-ENOMEM);
1004
1005 phy_provider->dev = dev;
1006 phy_provider->children = of_node_get(children);
1007 phy_provider->owner = owner;
1008 phy_provider->of_xlate = of_xlate;
1009
1010 mutex_lock(&phy_provider_mutex);
1011 list_add_tail(&phy_provider->list, &phy_provider_list);
1012 mutex_unlock(&phy_provider_mutex);
1013
1014 return phy_provider;
1015}
1016EXPORT_SYMBOL_GPL(__of_phy_provider_register);
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031struct phy_provider *__devm_of_phy_provider_register(struct device *dev,
1032 struct device_node *children, struct module *owner,
1033 struct phy * (*of_xlate)(struct device *dev,
1034 struct of_phandle_args *args))
1035{
1036 struct phy_provider **ptr, *phy_provider;
1037
1038 ptr = devres_alloc(devm_phy_provider_release, sizeof(*ptr), GFP_KERNEL);
1039 if (!ptr)
1040 return ERR_PTR(-ENOMEM);
1041
1042 phy_provider = __of_phy_provider_register(dev, children, owner,
1043 of_xlate);
1044 if (!IS_ERR(phy_provider)) {
1045 *ptr = phy_provider;
1046 devres_add(dev, ptr);
1047 } else {
1048 devres_free(ptr);
1049 }
1050
1051 return phy_provider;
1052}
1053EXPORT_SYMBOL_GPL(__devm_of_phy_provider_register);
1054
1055
1056
1057
1058
1059
1060
1061void of_phy_provider_unregister(struct phy_provider *phy_provider)
1062{
1063 if (IS_ERR(phy_provider))
1064 return;
1065
1066 mutex_lock(&phy_provider_mutex);
1067 list_del(&phy_provider->list);
1068 of_node_put(phy_provider->children);
1069 kfree(phy_provider);
1070 mutex_unlock(&phy_provider_mutex);
1071}
1072EXPORT_SYMBOL_GPL(of_phy_provider_unregister);
1073
1074
1075
1076
1077
1078
1079
1080
1081void devm_of_phy_provider_unregister(struct device *dev,
1082 struct phy_provider *phy_provider) {
1083 int r;
1084
1085 r = devres_destroy(dev, devm_phy_provider_release, devm_phy_match,
1086 phy_provider);
1087 dev_WARN_ONCE(dev, r, "couldn't find PHY provider device resource\n");
1088}
1089EXPORT_SYMBOL_GPL(devm_of_phy_provider_unregister);
1090
1091
1092
1093
1094
1095
1096
1097
1098static void phy_release(struct device *dev)
1099{
1100 struct phy *phy;
1101
1102 phy = to_phy(dev);
1103 dev_vdbg(dev, "releasing '%s'\n", dev_name(dev));
1104 regulator_put(phy->pwr);
1105 ida_simple_remove(&phy_ida, phy->id);
1106 kfree(phy);
1107}
1108
1109static int __init phy_core_init(void)
1110{
1111 phy_class = class_create(THIS_MODULE, "phy");
1112 if (IS_ERR(phy_class)) {
1113 pr_err("failed to create phy class --> %ld\n",
1114 PTR_ERR(phy_class));
1115 return PTR_ERR(phy_class);
1116 }
1117
1118 phy_class->dev_release = phy_release;
1119
1120 return 0;
1121}
1122device_initcall(phy_core_init);
1123