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3f23de10 SR |
1 | /* |
2 | * Copyright (C) 2006 Benjamin Herrenschmidt, IBM Corp. | |
3 | * <benh@kernel.crashing.org> | |
4 | * and Arnd Bergmann, IBM Corp. | |
5 | * Merged from powerpc/kernel/of_platform.c and | |
6 | * sparc{,64}/kernel/of_device.c by Stephen Rothwell | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU General Public License | |
10 | * as published by the Free Software Foundation; either version | |
11 | * 2 of the License, or (at your option) any later version. | |
12 | * | |
13 | */ | |
14 | #include <linux/errno.h> | |
5c457083 | 15 | #include <linux/module.h> |
3f23de10 | 16 | #include <linux/device.h> |
5fd200f3 | 17 | #include <linux/dma-mapping.h> |
50ef5284 | 18 | #include <linux/slab.h> |
3f23de10 SR |
19 | #include <linux/of_device.h> |
20 | #include <linux/of_platform.h> | |
21 | ||
140b932f OH |
22 | extern struct device_attribute of_platform_device_attrs[]; |
23 | ||
3f23de10 SR |
24 | static int of_platform_bus_match(struct device *dev, struct device_driver *drv) |
25 | { | |
597b9d1e | 26 | const struct of_device_id *matches = drv->of_match_table; |
3f23de10 SR |
27 | |
28 | if (!matches) | |
29 | return 0; | |
30 | ||
44504b2b | 31 | return of_match_device(matches, dev) != NULL; |
3f23de10 SR |
32 | } |
33 | ||
34 | static int of_platform_device_probe(struct device *dev) | |
35 | { | |
36 | int error = -ENODEV; | |
37 | struct of_platform_driver *drv; | |
38 | struct of_device *of_dev; | |
39 | const struct of_device_id *match; | |
40 | ||
41 | drv = to_of_platform_driver(dev->driver); | |
42 | of_dev = to_of_device(dev); | |
43 | ||
44 | if (!drv->probe) | |
45 | return error; | |
46 | ||
47 | of_dev_get(of_dev); | |
48 | ||
44504b2b | 49 | match = of_match_device(drv->driver.of_match_table, dev); |
3f23de10 SR |
50 | if (match) |
51 | error = drv->probe(of_dev, match); | |
52 | if (error) | |
53 | of_dev_put(of_dev); | |
54 | ||
55 | return error; | |
56 | } | |
57 | ||
58 | static int of_platform_device_remove(struct device *dev) | |
59 | { | |
60 | struct of_device *of_dev = to_of_device(dev); | |
61 | struct of_platform_driver *drv = to_of_platform_driver(dev->driver); | |
62 | ||
63 | if (dev->driver && drv->remove) | |
64 | drv->remove(of_dev); | |
65 | return 0; | |
66 | } | |
67 | ||
d35ef90b | 68 | static void of_platform_device_shutdown(struct device *dev) |
3f23de10 SR |
69 | { |
70 | struct of_device *of_dev = to_of_device(dev); | |
71 | struct of_platform_driver *drv = to_of_platform_driver(dev->driver); | |
3f23de10 | 72 | |
d35ef90b AV |
73 | if (dev->driver && drv->shutdown) |
74 | drv->shutdown(of_dev); | |
3f23de10 SR |
75 | } |
76 | ||
d35ef90b AV |
77 | #ifdef CONFIG_PM_SLEEP |
78 | ||
79 | static int of_platform_legacy_suspend(struct device *dev, pm_message_t mesg) | |
3f23de10 SR |
80 | { |
81 | struct of_device *of_dev = to_of_device(dev); | |
82 | struct of_platform_driver *drv = to_of_platform_driver(dev->driver); | |
d35ef90b | 83 | int ret = 0; |
3f23de10 | 84 | |
d35ef90b AV |
85 | if (dev->driver && drv->suspend) |
86 | ret = drv->suspend(of_dev, mesg); | |
87 | return ret; | |
3f23de10 SR |
88 | } |
89 | ||
d35ef90b | 90 | static int of_platform_legacy_resume(struct device *dev) |
a09ad3c4 ME |
91 | { |
92 | struct of_device *of_dev = to_of_device(dev); | |
93 | struct of_platform_driver *drv = to_of_platform_driver(dev->driver); | |
d35ef90b | 94 | int ret = 0; |
a09ad3c4 | 95 | |
d35ef90b AV |
96 | if (dev->driver && drv->resume) |
97 | ret = drv->resume(of_dev); | |
98 | return ret; | |
99 | } | |
100 | ||
101 | static int of_platform_pm_prepare(struct device *dev) | |
102 | { | |
103 | struct device_driver *drv = dev->driver; | |
104 | int ret = 0; | |
105 | ||
106 | if (drv && drv->pm && drv->pm->prepare) | |
107 | ret = drv->pm->prepare(dev); | |
108 | ||
109 | return ret; | |
110 | } | |
111 | ||
112 | static void of_platform_pm_complete(struct device *dev) | |
113 | { | |
114 | struct device_driver *drv = dev->driver; | |
115 | ||
116 | if (drv && drv->pm && drv->pm->complete) | |
117 | drv->pm->complete(dev); | |
118 | } | |
119 | ||
120 | #ifdef CONFIG_SUSPEND | |
121 | ||
122 | static int of_platform_pm_suspend(struct device *dev) | |
123 | { | |
124 | struct device_driver *drv = dev->driver; | |
125 | int ret = 0; | |
126 | ||
127 | if (!drv) | |
128 | return 0; | |
129 | ||
130 | if (drv->pm) { | |
131 | if (drv->pm->suspend) | |
132 | ret = drv->pm->suspend(dev); | |
133 | } else { | |
134 | ret = of_platform_legacy_suspend(dev, PMSG_SUSPEND); | |
135 | } | |
136 | ||
137 | return ret; | |
a09ad3c4 ME |
138 | } |
139 | ||
d35ef90b AV |
140 | static int of_platform_pm_suspend_noirq(struct device *dev) |
141 | { | |
142 | struct device_driver *drv = dev->driver; | |
143 | int ret = 0; | |
144 | ||
145 | if (!drv) | |
146 | return 0; | |
147 | ||
148 | if (drv->pm) { | |
149 | if (drv->pm->suspend_noirq) | |
150 | ret = drv->pm->suspend_noirq(dev); | |
151 | } | |
152 | ||
153 | return ret; | |
154 | } | |
155 | ||
156 | static int of_platform_pm_resume(struct device *dev) | |
157 | { | |
158 | struct device_driver *drv = dev->driver; | |
159 | int ret = 0; | |
160 | ||
161 | if (!drv) | |
162 | return 0; | |
163 | ||
164 | if (drv->pm) { | |
165 | if (drv->pm->resume) | |
166 | ret = drv->pm->resume(dev); | |
167 | } else { | |
168 | ret = of_platform_legacy_resume(dev); | |
169 | } | |
170 | ||
171 | return ret; | |
172 | } | |
173 | ||
174 | static int of_platform_pm_resume_noirq(struct device *dev) | |
175 | { | |
176 | struct device_driver *drv = dev->driver; | |
177 | int ret = 0; | |
178 | ||
179 | if (!drv) | |
180 | return 0; | |
181 | ||
182 | if (drv->pm) { | |
183 | if (drv->pm->resume_noirq) | |
184 | ret = drv->pm->resume_noirq(dev); | |
185 | } | |
186 | ||
187 | return ret; | |
188 | } | |
189 | ||
190 | #else /* !CONFIG_SUSPEND */ | |
191 | ||
192 | #define of_platform_pm_suspend NULL | |
193 | #define of_platform_pm_resume NULL | |
194 | #define of_platform_pm_suspend_noirq NULL | |
195 | #define of_platform_pm_resume_noirq NULL | |
196 | ||
197 | #endif /* !CONFIG_SUSPEND */ | |
198 | ||
199 | #ifdef CONFIG_HIBERNATION | |
200 | ||
201 | static int of_platform_pm_freeze(struct device *dev) | |
202 | { | |
203 | struct device_driver *drv = dev->driver; | |
204 | int ret = 0; | |
205 | ||
206 | if (!drv) | |
207 | return 0; | |
208 | ||
209 | if (drv->pm) { | |
210 | if (drv->pm->freeze) | |
211 | ret = drv->pm->freeze(dev); | |
212 | } else { | |
213 | ret = of_platform_legacy_suspend(dev, PMSG_FREEZE); | |
214 | } | |
215 | ||
216 | return ret; | |
217 | } | |
218 | ||
219 | static int of_platform_pm_freeze_noirq(struct device *dev) | |
220 | { | |
221 | struct device_driver *drv = dev->driver; | |
222 | int ret = 0; | |
223 | ||
224 | if (!drv) | |
225 | return 0; | |
226 | ||
227 | if (drv->pm) { | |
228 | if (drv->pm->freeze_noirq) | |
229 | ret = drv->pm->freeze_noirq(dev); | |
230 | } | |
231 | ||
232 | return ret; | |
233 | } | |
234 | ||
235 | static int of_platform_pm_thaw(struct device *dev) | |
236 | { | |
237 | struct device_driver *drv = dev->driver; | |
238 | int ret = 0; | |
239 | ||
240 | if (!drv) | |
241 | return 0; | |
242 | ||
243 | if (drv->pm) { | |
244 | if (drv->pm->thaw) | |
245 | ret = drv->pm->thaw(dev); | |
246 | } else { | |
247 | ret = of_platform_legacy_resume(dev); | |
248 | } | |
249 | ||
250 | return ret; | |
251 | } | |
252 | ||
253 | static int of_platform_pm_thaw_noirq(struct device *dev) | |
254 | { | |
255 | struct device_driver *drv = dev->driver; | |
256 | int ret = 0; | |
257 | ||
258 | if (!drv) | |
259 | return 0; | |
260 | ||
261 | if (drv->pm) { | |
262 | if (drv->pm->thaw_noirq) | |
263 | ret = drv->pm->thaw_noirq(dev); | |
264 | } | |
265 | ||
266 | return ret; | |
267 | } | |
268 | ||
269 | static int of_platform_pm_poweroff(struct device *dev) | |
270 | { | |
271 | struct device_driver *drv = dev->driver; | |
272 | int ret = 0; | |
273 | ||
274 | if (!drv) | |
275 | return 0; | |
276 | ||
277 | if (drv->pm) { | |
278 | if (drv->pm->poweroff) | |
279 | ret = drv->pm->poweroff(dev); | |
280 | } else { | |
281 | ret = of_platform_legacy_suspend(dev, PMSG_HIBERNATE); | |
282 | } | |
283 | ||
284 | return ret; | |
285 | } | |
286 | ||
287 | static int of_platform_pm_poweroff_noirq(struct device *dev) | |
288 | { | |
289 | struct device_driver *drv = dev->driver; | |
290 | int ret = 0; | |
291 | ||
292 | if (!drv) | |
293 | return 0; | |
294 | ||
295 | if (drv->pm) { | |
296 | if (drv->pm->poweroff_noirq) | |
297 | ret = drv->pm->poweroff_noirq(dev); | |
298 | } | |
299 | ||
300 | return ret; | |
301 | } | |
302 | ||
303 | static int of_platform_pm_restore(struct device *dev) | |
304 | { | |
305 | struct device_driver *drv = dev->driver; | |
306 | int ret = 0; | |
307 | ||
308 | if (!drv) | |
309 | return 0; | |
310 | ||
311 | if (drv->pm) { | |
312 | if (drv->pm->restore) | |
313 | ret = drv->pm->restore(dev); | |
314 | } else { | |
315 | ret = of_platform_legacy_resume(dev); | |
316 | } | |
317 | ||
318 | return ret; | |
319 | } | |
320 | ||
321 | static int of_platform_pm_restore_noirq(struct device *dev) | |
322 | { | |
323 | struct device_driver *drv = dev->driver; | |
324 | int ret = 0; | |
325 | ||
326 | if (!drv) | |
327 | return 0; | |
328 | ||
329 | if (drv->pm) { | |
330 | if (drv->pm->restore_noirq) | |
331 | ret = drv->pm->restore_noirq(dev); | |
332 | } | |
333 | ||
334 | return ret; | |
335 | } | |
336 | ||
337 | #else /* !CONFIG_HIBERNATION */ | |
338 | ||
339 | #define of_platform_pm_freeze NULL | |
340 | #define of_platform_pm_thaw NULL | |
341 | #define of_platform_pm_poweroff NULL | |
342 | #define of_platform_pm_restore NULL | |
343 | #define of_platform_pm_freeze_noirq NULL | |
344 | #define of_platform_pm_thaw_noirq NULL | |
345 | #define of_platform_pm_poweroff_noirq NULL | |
346 | #define of_platform_pm_restore_noirq NULL | |
347 | ||
348 | #endif /* !CONFIG_HIBERNATION */ | |
349 | ||
350 | static struct dev_pm_ops of_platform_dev_pm_ops = { | |
351 | .prepare = of_platform_pm_prepare, | |
352 | .complete = of_platform_pm_complete, | |
353 | .suspend = of_platform_pm_suspend, | |
354 | .resume = of_platform_pm_resume, | |
355 | .freeze = of_platform_pm_freeze, | |
356 | .thaw = of_platform_pm_thaw, | |
357 | .poweroff = of_platform_pm_poweroff, | |
358 | .restore = of_platform_pm_restore, | |
359 | .suspend_noirq = of_platform_pm_suspend_noirq, | |
360 | .resume_noirq = of_platform_pm_resume_noirq, | |
361 | .freeze_noirq = of_platform_pm_freeze_noirq, | |
362 | .thaw_noirq = of_platform_pm_thaw_noirq, | |
363 | .poweroff_noirq = of_platform_pm_poweroff_noirq, | |
364 | .restore_noirq = of_platform_pm_restore_noirq, | |
365 | }; | |
366 | ||
367 | #define OF_PLATFORM_PM_OPS_PTR (&of_platform_dev_pm_ops) | |
368 | ||
369 | #else /* !CONFIG_PM_SLEEP */ | |
370 | ||
371 | #define OF_PLATFORM_PM_OPS_PTR NULL | |
372 | ||
373 | #endif /* !CONFIG_PM_SLEEP */ | |
374 | ||
3f23de10 SR |
375 | int of_bus_type_init(struct bus_type *bus, const char *name) |
376 | { | |
377 | bus->name = name; | |
378 | bus->match = of_platform_bus_match; | |
379 | bus->probe = of_platform_device_probe; | |
380 | bus->remove = of_platform_device_remove; | |
a09ad3c4 | 381 | bus->shutdown = of_platform_device_shutdown; |
140b932f | 382 | bus->dev_attrs = of_platform_device_attrs; |
d35ef90b | 383 | bus->pm = OF_PLATFORM_PM_OPS_PTR; |
3f23de10 SR |
384 | return bus_register(bus); |
385 | } | |
5c457083 SR |
386 | |
387 | int of_register_driver(struct of_platform_driver *drv, struct bus_type *bus) | |
388 | { | |
5c457083 SR |
389 | drv->driver.bus = bus; |
390 | ||
391 | /* register with core */ | |
392 | return driver_register(&drv->driver); | |
393 | } | |
394 | EXPORT_SYMBOL(of_register_driver); | |
395 | ||
396 | void of_unregister_driver(struct of_platform_driver *drv) | |
397 | { | |
398 | driver_unregister(&drv->driver); | |
399 | } | |
400 | EXPORT_SYMBOL(of_unregister_driver); | |
5fd200f3 GL |
401 | |
402 | #if !defined(CONFIG_SPARC) | |
403 | /* | |
404 | * The following routines scan a subtree and registers a device for | |
405 | * each applicable node. | |
406 | * | |
407 | * Note: sparc doesn't use these routines because it has a different | |
408 | * mechanism for creating devices from device tree nodes. | |
409 | */ | |
410 | ||
94c09319 GL |
411 | /** |
412 | * of_device_make_bus_id - Use the device node data to assign a unique name | |
413 | * @dev: pointer to device structure that is linked to a device tree node | |
414 | * | |
415 | * This routine will first try using either the dcr-reg or the reg property | |
416 | * value to derive a unique name. As a last resort it will use the node | |
417 | * name followed by a unique number. | |
418 | */ | |
419 | static void of_device_make_bus_id(struct device *dev) | |
420 | { | |
421 | static atomic_t bus_no_reg_magic; | |
422 | struct device_node *node = dev->of_node; | |
423 | const u32 *reg; | |
424 | u64 addr; | |
425 | int magic; | |
426 | ||
427 | #ifdef CONFIG_PPC_DCR | |
428 | /* | |
429 | * If it's a DCR based device, use 'd' for native DCRs | |
430 | * and 'D' for MMIO DCRs. | |
431 | */ | |
432 | reg = of_get_property(node, "dcr-reg", NULL); | |
433 | if (reg) { | |
434 | #ifdef CONFIG_PPC_DCR_NATIVE | |
435 | dev_set_name(dev, "d%x.%s", *reg, node->name); | |
436 | #else /* CONFIG_PPC_DCR_NATIVE */ | |
437 | u64 addr = of_translate_dcr_address(node, *reg, NULL); | |
438 | if (addr != OF_BAD_ADDR) { | |
439 | dev_set_name(dev, "D%llx.%s", | |
440 | (unsigned long long)addr, node->name); | |
441 | return; | |
442 | } | |
443 | #endif /* !CONFIG_PPC_DCR_NATIVE */ | |
444 | } | |
445 | #endif /* CONFIG_PPC_DCR */ | |
446 | ||
447 | /* | |
448 | * For MMIO, get the physical address | |
449 | */ | |
450 | reg = of_get_property(node, "reg", NULL); | |
451 | if (reg) { | |
452 | addr = of_translate_address(node, reg); | |
453 | if (addr != OF_BAD_ADDR) { | |
454 | dev_set_name(dev, "%llx.%s", | |
455 | (unsigned long long)addr, node->name); | |
456 | return; | |
457 | } | |
458 | } | |
459 | ||
460 | /* | |
461 | * No BusID, use the node name and add a globally incremented | |
462 | * counter (and pray...) | |
463 | */ | |
464 | magic = atomic_add_return(1, &bus_no_reg_magic); | |
465 | dev_set_name(dev, "%s.%d", node->name, magic - 1); | |
466 | } | |
467 | ||
468 | /** | |
469 | * of_device_alloc - Allocate and initialize an of_device | |
470 | * @np: device node to assign to device | |
471 | * @bus_id: Name to assign to the device. May be null to use default name. | |
472 | * @parent: Parent device. | |
473 | */ | |
474 | struct of_device *of_device_alloc(struct device_node *np, | |
475 | const char *bus_id, | |
476 | struct device *parent) | |
477 | { | |
478 | struct of_device *dev; | |
ac80a51e GL |
479 | int rc, i, num_reg = 0, num_irq = 0; |
480 | struct resource *res, temp_res; | |
481 | ||
482 | /* First count how many resources are needed */ | |
483 | while (of_address_to_resource(np, num_reg, &temp_res) == 0) | |
484 | num_reg++; | |
485 | while (of_irq_to_resource(np, num_irq, &temp_res) != NO_IRQ) | |
486 | num_irq++; | |
487 | ||
488 | /* Allocate memory for both the struct device and the resource table */ | |
489 | dev = kzalloc(sizeof(*dev) + (sizeof(*res) * (num_reg + num_irq)), | |
490 | GFP_KERNEL); | |
94c09319 GL |
491 | if (!dev) |
492 | return NULL; | |
ac80a51e GL |
493 | res = (struct resource *) &dev[1]; |
494 | ||
495 | /* Populate the resource table */ | |
496 | if (num_irq || num_reg) { | |
497 | dev->num_resources = num_reg + num_irq; | |
498 | dev->resource = res; | |
499 | for (i = 0; i < num_reg; i++, res++) { | |
500 | rc = of_address_to_resource(np, i, res); | |
501 | WARN_ON(rc); | |
502 | } | |
503 | for (i = 0; i < num_irq; i++, res++) { | |
504 | rc = of_irq_to_resource(np, i, res); | |
505 | WARN_ON(rc == NO_IRQ); | |
506 | } | |
507 | } | |
94c09319 GL |
508 | |
509 | dev->dev.of_node = of_node_get(np); | |
510 | dev->dev.dma_mask = &dev->archdata.dma_mask; | |
511 | dev->dev.parent = parent; | |
512 | dev->dev.release = of_release_dev; | |
513 | ||
514 | if (bus_id) | |
515 | dev_set_name(&dev->dev, "%s", bus_id); | |
516 | else | |
517 | of_device_make_bus_id(&dev->dev); | |
518 | ||
519 | return dev; | |
520 | } | |
521 | EXPORT_SYMBOL(of_device_alloc); | |
522 | ||
5fd200f3 GL |
523 | /** |
524 | * of_platform_device_create - Alloc, initialize and register an of_device | |
525 | * @np: pointer to node to create device for | |
526 | * @bus_id: name to assign device | |
527 | * @parent: Linux device model parent device. | |
528 | */ | |
529 | struct of_device *of_platform_device_create(struct device_node *np, | |
530 | const char *bus_id, | |
531 | struct device *parent) | |
532 | { | |
533 | struct of_device *dev; | |
534 | ||
535 | dev = of_device_alloc(np, bus_id, parent); | |
536 | if (!dev) | |
537 | return NULL; | |
538 | ||
539 | dev->archdata.dma_mask = 0xffffffffUL; | |
540 | dev->dev.coherent_dma_mask = DMA_BIT_MASK(32); | |
541 | dev->dev.bus = &of_platform_bus_type; | |
542 | ||
543 | /* We do not fill the DMA ops for platform devices by default. | |
544 | * This is currently the responsibility of the platform code | |
545 | * to do such, possibly using a device notifier | |
546 | */ | |
547 | ||
548 | if (of_device_register(dev) != 0) { | |
549 | of_device_free(dev); | |
550 | return NULL; | |
551 | } | |
552 | ||
553 | return dev; | |
554 | } | |
555 | EXPORT_SYMBOL(of_platform_device_create); | |
556 | ||
557 | /** | |
558 | * of_platform_bus_create - Create an OF device for a bus node and all its | |
559 | * children. Optionally recursively instantiate matching busses. | |
560 | * @bus: device node of the bus to instantiate | |
561 | * @matches: match table, NULL to use the default, OF_NO_DEEP_PROBE to | |
562 | * disallow recursive creation of child busses | |
563 | */ | |
564 | static int of_platform_bus_create(const struct device_node *bus, | |
565 | const struct of_device_id *matches, | |
566 | struct device *parent) | |
567 | { | |
568 | struct device_node *child; | |
569 | struct of_device *dev; | |
570 | int rc = 0; | |
571 | ||
572 | for_each_child_of_node(bus, child) { | |
573 | pr_debug(" create child: %s\n", child->full_name); | |
574 | dev = of_platform_device_create(child, NULL, parent); | |
575 | if (dev == NULL) | |
576 | rc = -ENOMEM; | |
577 | else if (!of_match_node(matches, child)) | |
578 | continue; | |
579 | if (rc == 0) { | |
580 | pr_debug(" and sub busses\n"); | |
581 | rc = of_platform_bus_create(child, matches, &dev->dev); | |
582 | } | |
583 | if (rc) { | |
584 | of_node_put(child); | |
585 | break; | |
586 | } | |
587 | } | |
588 | return rc; | |
589 | } | |
590 | ||
591 | /** | |
592 | * of_platform_bus_probe - Probe the device-tree for platform busses | |
593 | * @root: parent of the first level to probe or NULL for the root of the tree | |
594 | * @matches: match table, NULL to use the default | |
595 | * @parent: parent to hook devices from, NULL for toplevel | |
596 | * | |
597 | * Note that children of the provided root are not instantiated as devices | |
598 | * unless the specified root itself matches the bus list and is not NULL. | |
599 | */ | |
600 | int of_platform_bus_probe(struct device_node *root, | |
601 | const struct of_device_id *matches, | |
602 | struct device *parent) | |
603 | { | |
604 | struct device_node *child; | |
605 | struct of_device *dev; | |
606 | int rc = 0; | |
607 | ||
608 | if (matches == NULL) | |
609 | matches = of_default_bus_ids; | |
610 | if (matches == OF_NO_DEEP_PROBE) | |
611 | return -EINVAL; | |
612 | if (root == NULL) | |
613 | root = of_find_node_by_path("/"); | |
614 | else | |
615 | of_node_get(root); | |
616 | ||
617 | pr_debug("of_platform_bus_probe()\n"); | |
618 | pr_debug(" starting at: %s\n", root->full_name); | |
619 | ||
620 | /* Do a self check of bus type, if there's a match, create | |
621 | * children | |
622 | */ | |
623 | if (of_match_node(matches, root)) { | |
624 | pr_debug(" root match, create all sub devices\n"); | |
625 | dev = of_platform_device_create(root, NULL, parent); | |
626 | if (dev == NULL) { | |
627 | rc = -ENOMEM; | |
628 | goto bail; | |
629 | } | |
630 | pr_debug(" create all sub busses\n"); | |
631 | rc = of_platform_bus_create(root, matches, &dev->dev); | |
632 | goto bail; | |
633 | } | |
634 | for_each_child_of_node(root, child) { | |
635 | if (!of_match_node(matches, child)) | |
636 | continue; | |
637 | ||
638 | pr_debug(" match: %s\n", child->full_name); | |
639 | dev = of_platform_device_create(child, NULL, parent); | |
640 | if (dev == NULL) | |
641 | rc = -ENOMEM; | |
642 | else | |
643 | rc = of_platform_bus_create(child, matches, &dev->dev); | |
644 | if (rc) { | |
645 | of_node_put(child); | |
646 | break; | |
647 | } | |
648 | } | |
649 | bail: | |
650 | of_node_put(root); | |
651 | return rc; | |
652 | } | |
653 | EXPORT_SYMBOL(of_platform_bus_probe); | |
654 | #endif /* !CONFIG_SPARC */ |