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fd531431 DM |
1 | #include <linux/config.h> |
2 | #include <linux/string.h> | |
3 | #include <linux/kernel.h> | |
4 | #include <linux/init.h> | |
5 | #include <linux/module.h> | |
6 | #include <linux/mod_devicetable.h> | |
7 | #include <linux/slab.h> | |
8 | ||
9 | #include <asm/errno.h> | |
10 | #include <asm/of_device.h> | |
11 | ||
12 | /** | |
13 | * of_match_device - Tell if an of_device structure has a matching | |
14 | * of_match structure | |
15 | * @ids: array of of device match structures to search in | |
16 | * @dev: the of device structure to match against | |
17 | * | |
18 | * Used by a driver to check whether an of_device present in the | |
19 | * system is in its list of supported devices. | |
20 | */ | |
21 | const struct of_device_id *of_match_device(const struct of_device_id *matches, | |
22 | const struct of_device *dev) | |
23 | { | |
24 | if (!dev->node) | |
25 | return NULL; | |
26 | while (matches->name[0] || matches->type[0] || matches->compatible[0]) { | |
27 | int match = 1; | |
28 | if (matches->name[0]) | |
29 | match &= dev->node->name | |
30 | && !strcmp(matches->name, dev->node->name); | |
31 | if (matches->type[0]) | |
32 | match &= dev->node->type | |
33 | && !strcmp(matches->type, dev->node->type); | |
34 | if (matches->compatible[0]) | |
35 | match &= of_device_is_compatible(dev->node, | |
36 | matches->compatible); | |
37 | if (match) | |
38 | return matches; | |
39 | matches++; | |
40 | } | |
41 | return NULL; | |
42 | } | |
43 | ||
44 | static int of_platform_bus_match(struct device *dev, struct device_driver *drv) | |
45 | { | |
46 | struct of_device * of_dev = to_of_device(dev); | |
47 | struct of_platform_driver * of_drv = to_of_platform_driver(drv); | |
48 | const struct of_device_id * matches = of_drv->match_table; | |
49 | ||
50 | if (!matches) | |
51 | return 0; | |
52 | ||
53 | return of_match_device(matches, of_dev) != NULL; | |
54 | } | |
55 | ||
56 | struct of_device *of_dev_get(struct of_device *dev) | |
57 | { | |
58 | struct device *tmp; | |
59 | ||
60 | if (!dev) | |
61 | return NULL; | |
62 | tmp = get_device(&dev->dev); | |
63 | if (tmp) | |
64 | return to_of_device(tmp); | |
65 | else | |
66 | return NULL; | |
67 | } | |
68 | ||
69 | void of_dev_put(struct of_device *dev) | |
70 | { | |
71 | if (dev) | |
72 | put_device(&dev->dev); | |
73 | } | |
74 | ||
75 | ||
76 | static int of_device_probe(struct device *dev) | |
77 | { | |
78 | int error = -ENODEV; | |
79 | struct of_platform_driver *drv; | |
80 | struct of_device *of_dev; | |
81 | const struct of_device_id *match; | |
82 | ||
83 | drv = to_of_platform_driver(dev->driver); | |
84 | of_dev = to_of_device(dev); | |
85 | ||
86 | if (!drv->probe) | |
87 | return error; | |
88 | ||
89 | of_dev_get(of_dev); | |
90 | ||
91 | match = of_match_device(drv->match_table, of_dev); | |
92 | if (match) | |
93 | error = drv->probe(of_dev, match); | |
94 | if (error) | |
95 | of_dev_put(of_dev); | |
96 | ||
97 | return error; | |
98 | } | |
99 | ||
100 | static int of_device_remove(struct device *dev) | |
101 | { | |
102 | struct of_device * of_dev = to_of_device(dev); | |
103 | struct of_platform_driver * drv = to_of_platform_driver(dev->driver); | |
104 | ||
105 | if (dev->driver && drv->remove) | |
106 | drv->remove(of_dev); | |
107 | return 0; | |
108 | } | |
109 | ||
110 | static int of_device_suspend(struct device *dev, pm_message_t state) | |
111 | { | |
112 | struct of_device * of_dev = to_of_device(dev); | |
113 | struct of_platform_driver * drv = to_of_platform_driver(dev->driver); | |
114 | int error = 0; | |
115 | ||
116 | if (dev->driver && drv->suspend) | |
117 | error = drv->suspend(of_dev, state); | |
118 | return error; | |
119 | } | |
120 | ||
121 | static int of_device_resume(struct device * dev) | |
122 | { | |
123 | struct of_device * of_dev = to_of_device(dev); | |
124 | struct of_platform_driver * drv = to_of_platform_driver(dev->driver); | |
125 | int error = 0; | |
126 | ||
127 | if (dev->driver && drv->resume) | |
128 | error = drv->resume(of_dev); | |
129 | return error; | |
130 | } | |
131 | ||
132 | #ifdef CONFIG_PCI | |
133 | struct bus_type ebus_bus_type = { | |
134 | .name = "ebus", | |
135 | .match = of_platform_bus_match, | |
136 | .probe = of_device_probe, | |
137 | .remove = of_device_remove, | |
138 | .suspend = of_device_suspend, | |
139 | .resume = of_device_resume, | |
140 | }; | |
69853918 | 141 | EXPORT_SYMBOL(ebus_bus_type); |
fd531431 DM |
142 | #endif |
143 | ||
144 | #ifdef CONFIG_SBUS | |
145 | struct bus_type sbus_bus_type = { | |
146 | .name = "sbus", | |
147 | .match = of_platform_bus_match, | |
148 | .probe = of_device_probe, | |
149 | .remove = of_device_remove, | |
150 | .suspend = of_device_suspend, | |
151 | .resume = of_device_resume, | |
152 | }; | |
69853918 | 153 | EXPORT_SYMBOL(sbus_bus_type); |
fd531431 DM |
154 | #endif |
155 | ||
cf44bbc2 DM |
156 | struct bus_type of_bus_type = { |
157 | .name = "of", | |
158 | .match = of_platform_bus_match, | |
159 | .probe = of_device_probe, | |
160 | .remove = of_device_remove, | |
161 | .suspend = of_device_suspend, | |
162 | .resume = of_device_resume, | |
163 | }; | |
164 | EXPORT_SYMBOL(of_bus_type); | |
165 | ||
166 | static inline u64 of_read_addr(u32 *cell, int size) | |
167 | { | |
168 | u64 r = 0; | |
169 | while (size--) | |
170 | r = (r << 32) | *(cell++); | |
171 | return r; | |
172 | } | |
173 | ||
174 | static void __init get_cells(struct device_node *dp, | |
175 | int *addrc, int *sizec) | |
176 | { | |
177 | if (addrc) | |
178 | *addrc = of_n_addr_cells(dp); | |
179 | if (sizec) | |
180 | *sizec = of_n_size_cells(dp); | |
181 | } | |
182 | ||
183 | /* Max address size we deal with */ | |
184 | #define OF_MAX_ADDR_CELLS 4 | |
185 | ||
186 | struct of_bus { | |
187 | const char *name; | |
188 | const char *addr_prop_name; | |
189 | int (*match)(struct device_node *parent); | |
190 | void (*count_cells)(struct device_node *child, | |
191 | int *addrc, int *sizec); | |
192 | u64 (*map)(u32 *addr, u32 *range, int na, int ns, int pna); | |
193 | int (*translate)(u32 *addr, u64 offset, int na); | |
194 | unsigned int (*get_flags)(u32 *addr); | |
195 | }; | |
196 | ||
197 | /* | |
198 | * Default translator (generic bus) | |
199 | */ | |
200 | ||
201 | static void of_bus_default_count_cells(struct device_node *dev, | |
202 | int *addrc, int *sizec) | |
203 | { | |
204 | get_cells(dev, addrc, sizec); | |
205 | } | |
206 | ||
207 | static u64 of_bus_default_map(u32 *addr, u32 *range, int na, int ns, int pna) | |
208 | { | |
209 | u64 cp, s, da; | |
210 | ||
211 | cp = of_read_addr(range, na); | |
212 | s = of_read_addr(range + na + pna, ns); | |
213 | da = of_read_addr(addr, na); | |
214 | ||
215 | if (da < cp || da >= (cp + s)) | |
216 | return OF_BAD_ADDR; | |
217 | return da - cp; | |
218 | } | |
219 | ||
220 | static int of_bus_default_translate(u32 *addr, u64 offset, int na) | |
221 | { | |
222 | u64 a = of_read_addr(addr, na); | |
223 | memset(addr, 0, na * 4); | |
224 | a += offset; | |
225 | if (na > 1) | |
226 | addr[na - 2] = a >> 32; | |
227 | addr[na - 1] = a & 0xffffffffu; | |
228 | ||
229 | return 0; | |
230 | } | |
231 | ||
232 | static unsigned int of_bus_default_get_flags(u32 *addr) | |
233 | { | |
234 | return IORESOURCE_MEM; | |
235 | } | |
236 | ||
237 | ||
238 | /* | |
239 | * PCI bus specific translator | |
240 | */ | |
241 | ||
242 | static int of_bus_pci_match(struct device_node *np) | |
243 | { | |
244 | return !strcmp(np->type, "pci") || !strcmp(np->type, "pciex"); | |
245 | } | |
246 | ||
247 | static void of_bus_pci_count_cells(struct device_node *np, | |
248 | int *addrc, int *sizec) | |
249 | { | |
250 | if (addrc) | |
251 | *addrc = 3; | |
252 | if (sizec) | |
253 | *sizec = 2; | |
254 | } | |
255 | ||
256 | static u64 of_bus_pci_map(u32 *addr, u32 *range, int na, int ns, int pna) | |
257 | { | |
258 | u64 cp, s, da; | |
259 | ||
260 | /* Check address type match */ | |
261 | if ((addr[0] ^ range[0]) & 0x03000000) | |
262 | return OF_BAD_ADDR; | |
263 | ||
264 | /* Read address values, skipping high cell */ | |
265 | cp = of_read_addr(range + 1, na - 1); | |
266 | s = of_read_addr(range + na + pna, ns); | |
267 | da = of_read_addr(addr + 1, na - 1); | |
268 | ||
269 | if (da < cp || da >= (cp + s)) | |
270 | return OF_BAD_ADDR; | |
271 | return da - cp; | |
272 | } | |
273 | ||
274 | static int of_bus_pci_translate(u32 *addr, u64 offset, int na) | |
275 | { | |
276 | return of_bus_default_translate(addr + 1, offset, na - 1); | |
277 | } | |
278 | ||
279 | static unsigned int of_bus_pci_get_flags(u32 *addr) | |
280 | { | |
281 | unsigned int flags = 0; | |
282 | u32 w = addr[0]; | |
283 | ||
284 | switch((w >> 24) & 0x03) { | |
285 | case 0x01: | |
286 | flags |= IORESOURCE_IO; | |
287 | case 0x02: /* 32 bits */ | |
288 | case 0x03: /* 64 bits */ | |
289 | flags |= IORESOURCE_MEM; | |
290 | } | |
291 | if (w & 0x40000000) | |
292 | flags |= IORESOURCE_PREFETCH; | |
293 | return flags; | |
294 | } | |
295 | ||
296 | /* | |
297 | * SBUS bus specific translator | |
298 | */ | |
299 | ||
300 | static int of_bus_sbus_match(struct device_node *np) | |
301 | { | |
302 | return !strcmp(np->name, "sbus") || | |
303 | !strcmp(np->name, "sbi"); | |
304 | } | |
305 | ||
306 | static void of_bus_sbus_count_cells(struct device_node *child, | |
307 | int *addrc, int *sizec) | |
308 | { | |
309 | if (addrc) | |
310 | *addrc = 2; | |
311 | if (sizec) | |
312 | *sizec = 1; | |
313 | } | |
314 | ||
315 | static u64 of_bus_sbus_map(u32 *addr, u32 *range, int na, int ns, int pna) | |
316 | { | |
317 | return of_bus_default_map(addr, range, na, ns, pna); | |
318 | } | |
319 | ||
320 | static int of_bus_sbus_translate(u32 *addr, u64 offset, int na) | |
321 | { | |
322 | return of_bus_default_translate(addr, offset, na); | |
323 | } | |
324 | ||
325 | static unsigned int of_bus_sbus_get_flags(u32 *addr) | |
326 | { | |
327 | return IORESOURCE_MEM; | |
328 | } | |
329 | ||
330 | ||
331 | /* | |
332 | * Array of bus specific translators | |
333 | */ | |
334 | ||
335 | static struct of_bus of_busses[] = { | |
336 | /* PCI */ | |
337 | { | |
338 | .name = "pci", | |
339 | .addr_prop_name = "assigned-addresses", | |
340 | .match = of_bus_pci_match, | |
341 | .count_cells = of_bus_pci_count_cells, | |
342 | .map = of_bus_pci_map, | |
343 | .translate = of_bus_pci_translate, | |
344 | .get_flags = of_bus_pci_get_flags, | |
345 | }, | |
346 | /* SBUS */ | |
347 | { | |
348 | .name = "sbus", | |
349 | .addr_prop_name = "reg", | |
350 | .match = of_bus_sbus_match, | |
351 | .count_cells = of_bus_sbus_count_cells, | |
352 | .map = of_bus_sbus_map, | |
353 | .translate = of_bus_sbus_translate, | |
354 | .get_flags = of_bus_sbus_get_flags, | |
355 | }, | |
356 | /* Default */ | |
357 | { | |
358 | .name = "default", | |
359 | .addr_prop_name = "reg", | |
360 | .match = NULL, | |
361 | .count_cells = of_bus_default_count_cells, | |
362 | .map = of_bus_default_map, | |
363 | .translate = of_bus_default_translate, | |
364 | .get_flags = of_bus_default_get_flags, | |
365 | }, | |
366 | }; | |
367 | ||
368 | static struct of_bus *of_match_bus(struct device_node *np) | |
369 | { | |
370 | int i; | |
371 | ||
372 | for (i = 0; i < ARRAY_SIZE(of_busses); i ++) | |
373 | if (!of_busses[i].match || of_busses[i].match(np)) | |
374 | return &of_busses[i]; | |
375 | BUG(); | |
376 | return NULL; | |
377 | } | |
378 | ||
379 | static int __init build_one_resource(struct device_node *parent, | |
380 | struct of_bus *bus, | |
381 | struct of_bus *pbus, | |
382 | u32 *addr, | |
383 | int na, int ns, int pna) | |
384 | { | |
385 | u32 *ranges; | |
386 | unsigned int rlen; | |
387 | int rone; | |
388 | u64 offset = OF_BAD_ADDR; | |
389 | ||
390 | ranges = of_get_property(parent, "ranges", &rlen); | |
391 | if (ranges == NULL || rlen == 0) { | |
392 | offset = of_read_addr(addr, na); | |
393 | memset(addr, 0, pna * 4); | |
394 | goto finish; | |
395 | } | |
396 | ||
397 | /* Now walk through the ranges */ | |
398 | rlen /= 4; | |
399 | rone = na + pna + ns; | |
400 | for (; rlen >= rone; rlen -= rone, ranges += rone) { | |
401 | offset = bus->map(addr, ranges, na, ns, pna); | |
402 | if (offset != OF_BAD_ADDR) | |
403 | break; | |
404 | } | |
405 | if (offset == OF_BAD_ADDR) | |
406 | return 1; | |
407 | ||
408 | memcpy(addr, ranges + na, 4 * pna); | |
409 | ||
410 | finish: | |
411 | /* Translate it into parent bus space */ | |
412 | return pbus->translate(addr, offset, pna); | |
413 | } | |
414 | ||
415 | static void __init build_device_resources(struct of_device *op, | |
416 | struct device *parent) | |
417 | { | |
418 | struct of_device *p_op; | |
419 | struct of_bus *bus; | |
420 | int na, ns; | |
421 | int index, num_reg; | |
422 | void *preg; | |
423 | ||
424 | if (!parent) | |
425 | return; | |
426 | ||
427 | p_op = to_of_device(parent); | |
428 | bus = of_match_bus(p_op->node); | |
429 | bus->count_cells(op->node, &na, &ns); | |
430 | ||
431 | preg = of_get_property(op->node, bus->addr_prop_name, &num_reg); | |
432 | if (!preg || num_reg == 0) | |
433 | return; | |
434 | ||
435 | /* Convert to num-cells. */ | |
436 | num_reg /= 4; | |
437 | ||
438 | /* Conver to num-entries. */ | |
439 | num_reg /= na + ns; | |
440 | ||
441 | for (index = 0; index < num_reg; index++) { | |
442 | struct resource *r = &op->resource[index]; | |
443 | u32 addr[OF_MAX_ADDR_CELLS]; | |
444 | u32 *reg = (preg + (index * ((na + ns) * 4))); | |
445 | struct device_node *dp = op->node; | |
446 | struct device_node *pp = p_op->node; | |
447 | struct of_bus *pbus; | |
448 | u64 size, result = OF_BAD_ADDR; | |
449 | unsigned long flags; | |
450 | int dna, dns; | |
451 | int pna, pns; | |
452 | ||
453 | size = of_read_addr(reg + na, ns); | |
454 | flags = bus->get_flags(reg); | |
455 | ||
456 | memcpy(addr, reg, na * 4); | |
457 | ||
458 | /* If the immediate parent has no ranges property to apply, | |
459 | * just use a 1<->1 mapping. | |
460 | */ | |
461 | if (of_find_property(pp, "ranges", NULL) == NULL) { | |
462 | result = of_read_addr(addr, na); | |
463 | goto build_res; | |
464 | } | |
465 | ||
466 | dna = na; | |
467 | dns = ns; | |
468 | ||
469 | while (1) { | |
470 | dp = pp; | |
471 | pp = dp->parent; | |
472 | if (!pp) { | |
473 | result = of_read_addr(addr, dna); | |
474 | break; | |
475 | } | |
476 | ||
477 | pbus = of_match_bus(pp); | |
478 | pbus->count_cells(dp, &pna, &pns); | |
479 | ||
480 | if (build_one_resource(dp, bus, pbus, addr, dna, dns, pna)) | |
481 | break; | |
482 | ||
483 | dna = pna; | |
484 | dns = pns; | |
485 | bus = pbus; | |
486 | } | |
487 | ||
488 | build_res: | |
489 | memset(r, 0, sizeof(*r)); | |
490 | if (result != OF_BAD_ADDR) { | |
95714e12 | 491 | r->start = result & 0xffffffff; |
cf44bbc2 | 492 | r->end = result + size - 1; |
95714e12 | 493 | r->flags = flags | ((result >> 32ULL) & 0xffUL); |
cf44bbc2 DM |
494 | } else { |
495 | r->start = ~0UL; | |
496 | r->end = ~0UL; | |
497 | } | |
498 | r->name = op->node->name; | |
499 | } | |
500 | } | |
501 | ||
502 | static struct of_device * __init scan_one_device(struct device_node *dp, | |
503 | struct device *parent) | |
504 | { | |
505 | struct of_device *op = kzalloc(sizeof(*op), GFP_KERNEL); | |
506 | unsigned int *irq; | |
507 | int len; | |
508 | ||
509 | if (!op) | |
510 | return NULL; | |
511 | ||
512 | op->node = dp; | |
513 | ||
514 | op->clock_freq = of_getintprop_default(dp, "clock-frequency", | |
515 | (25*1000*1000)); | |
516 | op->portid = of_getintprop_default(dp, "upa-portid", -1); | |
517 | if (op->portid == -1) | |
518 | op->portid = of_getintprop_default(dp, "portid", -1); | |
519 | ||
520 | irq = of_get_property(dp, "interrupts", &len); | |
521 | if (irq) | |
522 | op->irq = *irq; | |
523 | else | |
524 | op->irq = 0xffffffff; | |
525 | ||
526 | build_device_resources(op, parent); | |
527 | ||
528 | op->dev.parent = parent; | |
529 | op->dev.bus = &of_bus_type; | |
530 | if (!parent) | |
531 | strcpy(op->dev.bus_id, "root"); | |
532 | else | |
533 | strcpy(op->dev.bus_id, dp->path_component_name); | |
534 | ||
535 | if (of_device_register(op)) { | |
536 | printk("%s: Could not register of device.\n", | |
537 | dp->full_name); | |
538 | kfree(op); | |
539 | op = NULL; | |
540 | } | |
541 | ||
542 | return op; | |
543 | } | |
544 | ||
545 | static void __init scan_tree(struct device_node *dp, struct device *parent) | |
546 | { | |
547 | while (dp) { | |
548 | struct of_device *op = scan_one_device(dp, parent); | |
549 | ||
550 | if (op) | |
551 | scan_tree(dp->child, &op->dev); | |
552 | ||
553 | dp = dp->sibling; | |
554 | } | |
555 | } | |
556 | ||
557 | static void __init scan_of_devices(void) | |
558 | { | |
559 | struct device_node *root = of_find_node_by_path("/"); | |
560 | struct of_device *parent; | |
561 | ||
562 | parent = scan_one_device(root, NULL); | |
563 | if (!parent) | |
564 | return; | |
565 | ||
566 | scan_tree(root->child, &parent->dev); | |
567 | } | |
568 | ||
fd531431 DM |
569 | static int __init of_bus_driver_init(void) |
570 | { | |
cf44bbc2 | 571 | int err; |
fd531431 | 572 | |
cf44bbc2 | 573 | err = bus_register(&of_bus_type); |
fd531431 DM |
574 | #ifdef CONFIG_PCI |
575 | if (!err) | |
576 | err = bus_register(&ebus_bus_type); | |
577 | #endif | |
578 | #ifdef CONFIG_SBUS | |
579 | if (!err) | |
580 | err = bus_register(&sbus_bus_type); | |
581 | #endif | |
cf44bbc2 DM |
582 | |
583 | if (!err) | |
584 | scan_of_devices(); | |
585 | ||
586 | return err; | |
fd531431 DM |
587 | } |
588 | ||
589 | postcore_initcall(of_bus_driver_init); | |
590 | ||
591 | int of_register_driver(struct of_platform_driver *drv, struct bus_type *bus) | |
592 | { | |
593 | /* initialize common driver fields */ | |
594 | drv->driver.name = drv->name; | |
595 | drv->driver.bus = bus; | |
596 | ||
597 | /* register with core */ | |
598 | return driver_register(&drv->driver); | |
599 | } | |
600 | ||
601 | void of_unregister_driver(struct of_platform_driver *drv) | |
602 | { | |
603 | driver_unregister(&drv->driver); | |
604 | } | |
605 | ||
606 | ||
607 | static ssize_t dev_show_devspec(struct device *dev, struct device_attribute *attr, char *buf) | |
608 | { | |
609 | struct of_device *ofdev; | |
610 | ||
611 | ofdev = to_of_device(dev); | |
612 | return sprintf(buf, "%s", ofdev->node->full_name); | |
613 | } | |
614 | ||
615 | static DEVICE_ATTR(devspec, S_IRUGO, dev_show_devspec, NULL); | |
616 | ||
617 | /** | |
618 | * of_release_dev - free an of device structure when all users of it are finished. | |
619 | * @dev: device that's been disconnected | |
620 | * | |
621 | * Will be called only by the device core when all users of this of device are | |
622 | * done. | |
623 | */ | |
624 | void of_release_dev(struct device *dev) | |
625 | { | |
626 | struct of_device *ofdev; | |
627 | ||
628 | ofdev = to_of_device(dev); | |
629 | ||
630 | kfree(ofdev); | |
631 | } | |
632 | ||
633 | int of_device_register(struct of_device *ofdev) | |
634 | { | |
635 | int rc; | |
636 | ||
637 | BUG_ON(ofdev->node == NULL); | |
638 | ||
639 | rc = device_register(&ofdev->dev); | |
640 | if (rc) | |
641 | return rc; | |
642 | ||
643 | device_create_file(&ofdev->dev, &dev_attr_devspec); | |
644 | ||
645 | return 0; | |
646 | } | |
647 | ||
648 | void of_device_unregister(struct of_device *ofdev) | |
649 | { | |
650 | device_remove_file(&ofdev->dev, &dev_attr_devspec); | |
651 | device_unregister(&ofdev->dev); | |
652 | } | |
653 | ||
654 | struct of_device* of_platform_device_create(struct device_node *np, | |
655 | const char *bus_id, | |
656 | struct device *parent, | |
657 | struct bus_type *bus) | |
658 | { | |
659 | struct of_device *dev; | |
660 | ||
661 | dev = kmalloc(sizeof(*dev), GFP_KERNEL); | |
662 | if (!dev) | |
663 | return NULL; | |
664 | memset(dev, 0, sizeof(*dev)); | |
665 | ||
666 | dev->dev.parent = parent; | |
667 | dev->dev.bus = bus; | |
668 | dev->dev.release = of_release_dev; | |
669 | ||
670 | strlcpy(dev->dev.bus_id, bus_id, BUS_ID_SIZE); | |
671 | ||
672 | if (of_device_register(dev) != 0) { | |
673 | kfree(dev); | |
674 | return NULL; | |
675 | } | |
676 | ||
677 | return dev; | |
678 | } | |
679 | ||
680 | EXPORT_SYMBOL(of_match_device); | |
681 | EXPORT_SYMBOL(of_register_driver); | |
682 | EXPORT_SYMBOL(of_unregister_driver); | |
683 | EXPORT_SYMBOL(of_device_register); | |
684 | EXPORT_SYMBOL(of_device_unregister); | |
685 | EXPORT_SYMBOL(of_dev_get); | |
686 | EXPORT_SYMBOL(of_dev_put); | |
687 | EXPORT_SYMBOL(of_platform_device_create); | |
688 | EXPORT_SYMBOL(of_release_dev); |