2 * Self tests for device tree subsystem
5 #define pr_fmt(fmt) "### dt-test ### " fmt
9 #include <linux/errno.h>
10 #include <linux/hashtable.h>
11 #include <linux/module.h>
13 #include <linux/of_fdt.h>
14 #include <linux/of_irq.h>
15 #include <linux/of_platform.h>
16 #include <linux/list.h>
17 #include <linux/mutex.h>
18 #include <linux/slab.h>
19 #include <linux/device.h>
20 #include <linux/platform_device.h>
21 #include <linux/of_platform.h>
23 #include <linux/i2c.h>
24 #include <linux/i2c-mux.h>
26 #include "of_private.h"
28 static struct selftest_results {
33 #define selftest(result, fmt, ...) ({ \
34 bool failed = !(result); \
36 selftest_results.failed++; \
37 pr_err("FAIL %s():%i " fmt, __func__, __LINE__, ##__VA_ARGS__); \
39 selftest_results.passed++; \
40 pr_debug("pass %s():%i\n", __func__, __LINE__); \
45 static void __init of_selftest_find_node_by_name(void)
47 struct device_node *np;
50 np = of_find_node_by_path("/testcase-data");
51 selftest(np && !strcmp("/testcase-data", np->full_name),
52 "find /testcase-data failed\n");
55 /* Test if trailing '/' works */
56 np = of_find_node_by_path("/testcase-data/");
57 selftest(!np, "trailing '/' on /testcase-data/ should fail\n");
59 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
60 selftest(np && !strcmp("/testcase-data/phandle-tests/consumer-a", np->full_name),
61 "find /testcase-data/phandle-tests/consumer-a failed\n");
64 np = of_find_node_by_path("testcase-alias");
65 selftest(np && !strcmp("/testcase-data", np->full_name),
66 "find testcase-alias failed\n");
69 /* Test if trailing '/' works on aliases */
70 np = of_find_node_by_path("testcase-alias/");
71 selftest(!np, "trailing '/' on testcase-alias/ should fail\n");
73 np = of_find_node_by_path("testcase-alias/phandle-tests/consumer-a");
74 selftest(np && !strcmp("/testcase-data/phandle-tests/consumer-a", np->full_name),
75 "find testcase-alias/phandle-tests/consumer-a failed\n");
78 np = of_find_node_by_path("/testcase-data/missing-path");
79 selftest(!np, "non-existent path returned node %s\n", np->full_name);
82 np = of_find_node_by_path("missing-alias");
83 selftest(!np, "non-existent alias returned node %s\n", np->full_name);
86 np = of_find_node_by_path("testcase-alias/missing-path");
87 selftest(!np, "non-existent alias with relative path returned node %s\n", np->full_name);
90 np = of_find_node_opts_by_path("/testcase-data:testoption", &options);
91 selftest(np && !strcmp("testoption", options),
92 "option path test failed\n");
95 np = of_find_node_opts_by_path("/testcase-data:test/option", &options);
96 selftest(np && !strcmp("test/option", options),
97 "option path test, subcase #1 failed\n");
100 np = of_find_node_opts_by_path("/testcase-data/testcase-device1:test/option", &options);
101 selftest(np && !strcmp("test/option", options),
102 "option path test, subcase #2 failed\n");
105 np = of_find_node_opts_by_path("/testcase-data:testoption", NULL);
106 selftest(np, "NULL option path test failed\n");
109 np = of_find_node_opts_by_path("testcase-alias:testaliasoption",
111 selftest(np && !strcmp("testaliasoption", options),
112 "option alias path test failed\n");
115 np = of_find_node_opts_by_path("testcase-alias:test/alias/option",
117 selftest(np && !strcmp("test/alias/option", options),
118 "option alias path test, subcase #1 failed\n");
121 np = of_find_node_opts_by_path("testcase-alias:testaliasoption", NULL);
122 selftest(np, "NULL option alias path test failed\n");
125 options = "testoption";
126 np = of_find_node_opts_by_path("testcase-alias", &options);
127 selftest(np && !options, "option clearing test failed\n");
130 options = "testoption";
131 np = of_find_node_opts_by_path("/", &options);
132 selftest(np && !options, "option clearing root node test failed\n");
136 static void __init of_selftest_dynamic(void)
138 struct device_node *np;
139 struct property *prop;
141 np = of_find_node_by_path("/testcase-data");
143 pr_err("missing testcase data\n");
147 /* Array of 4 properties for the purpose of testing */
148 prop = kzalloc(sizeof(*prop) * 4, GFP_KERNEL);
150 selftest(0, "kzalloc() failed\n");
154 /* Add a new property - should pass*/
155 prop->name = "new-property";
156 prop->value = "new-property-data";
157 prop->length = strlen(prop->value);
158 selftest(of_add_property(np, prop) == 0, "Adding a new property failed\n");
160 /* Try to add an existing property - should fail */
162 prop->name = "new-property";
163 prop->value = "new-property-data-should-fail";
164 prop->length = strlen(prop->value);
165 selftest(of_add_property(np, prop) != 0,
166 "Adding an existing property should have failed\n");
168 /* Try to modify an existing property - should pass */
169 prop->value = "modify-property-data-should-pass";
170 prop->length = strlen(prop->value);
171 selftest(of_update_property(np, prop) == 0,
172 "Updating an existing property should have passed\n");
174 /* Try to modify non-existent property - should pass*/
176 prop->name = "modify-property";
177 prop->value = "modify-missing-property-data-should-pass";
178 prop->length = strlen(prop->value);
179 selftest(of_update_property(np, prop) == 0,
180 "Updating a missing property should have passed\n");
182 /* Remove property - should pass */
183 selftest(of_remove_property(np, prop) == 0,
184 "Removing a property should have passed\n");
186 /* Adding very large property - should pass */
188 prop->name = "large-property-PAGE_SIZEx8";
189 prop->length = PAGE_SIZE * 8;
190 prop->value = kzalloc(prop->length, GFP_KERNEL);
191 selftest(prop->value != NULL, "Unable to allocate large buffer\n");
193 selftest(of_add_property(np, prop) == 0,
194 "Adding a large property should have passed\n");
197 static int __init of_selftest_check_node_linkage(struct device_node *np)
199 struct device_node *child;
202 for_each_child_of_node(np, child) {
203 if (child->parent != np) {
204 pr_err("Child node %s links to wrong parent %s\n",
205 child->name, np->name);
209 rc = of_selftest_check_node_linkage(child);
218 static void __init of_selftest_check_tree_linkage(void)
220 struct device_node *np;
221 int allnode_count = 0, child_count;
226 for_each_of_allnodes(np)
228 child_count = of_selftest_check_node_linkage(of_root);
230 selftest(child_count > 0, "Device node data structure is corrupted\n");
231 selftest(child_count == allnode_count, "allnodes list size (%i) doesn't match"
232 "sibling lists size (%i)\n", allnode_count, child_count);
233 pr_debug("allnodes list size (%i); sibling lists size (%i)\n", allnode_count, child_count);
237 struct hlist_node node;
238 struct device_node *np;
241 static DEFINE_HASHTABLE(phandle_ht, 8);
242 static void __init of_selftest_check_phandles(void)
244 struct device_node *np;
245 struct node_hash *nh;
246 struct hlist_node *tmp;
247 int i, dup_count = 0, phandle_count = 0;
249 for_each_of_allnodes(np) {
253 hash_for_each_possible(phandle_ht, nh, node, np->phandle) {
254 if (nh->np->phandle == np->phandle) {
255 pr_info("Duplicate phandle! %i used by %s and %s\n",
256 np->phandle, nh->np->full_name, np->full_name);
262 nh = kzalloc(sizeof(*nh), GFP_KERNEL);
267 hash_add(phandle_ht, &nh->node, np->phandle);
270 selftest(dup_count == 0, "Found %i duplicates in %i phandles\n",
271 dup_count, phandle_count);
274 hash_for_each_safe(phandle_ht, i, tmp, nh, node) {
280 static void __init of_selftest_parse_phandle_with_args(void)
282 struct device_node *np;
283 struct of_phandle_args args;
286 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
288 pr_err("missing testcase data\n");
292 rc = of_count_phandle_with_args(np, "phandle-list", "#phandle-cells");
293 selftest(rc == 7, "of_count_phandle_with_args() returned %i, expected 7\n", rc);
295 for (i = 0; i < 8; i++) {
297 rc = of_parse_phandle_with_args(np, "phandle-list",
298 "#phandle-cells", i, &args);
300 /* Test the values from tests-phandle.dtsi */
304 passed &= (args.args_count == 1);
305 passed &= (args.args[0] == (i + 1));
309 passed &= (args.args_count == 2);
310 passed &= (args.args[0] == (i + 1));
311 passed &= (args.args[1] == 0);
314 passed &= (rc == -ENOENT);
318 passed &= (args.args_count == 3);
319 passed &= (args.args[0] == (i + 1));
320 passed &= (args.args[1] == 4);
321 passed &= (args.args[2] == 3);
325 passed &= (args.args_count == 2);
326 passed &= (args.args[0] == (i + 1));
327 passed &= (args.args[1] == 100);
331 passed &= (args.args_count == 0);
335 passed &= (args.args_count == 1);
336 passed &= (args.args[0] == (i + 1));
339 passed &= (rc == -ENOENT);
345 selftest(passed, "index %i - data error on node %s rc=%i\n",
346 i, args.np->full_name, rc);
349 /* Check for missing list property */
350 rc = of_parse_phandle_with_args(np, "phandle-list-missing",
351 "#phandle-cells", 0, &args);
352 selftest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);
353 rc = of_count_phandle_with_args(np, "phandle-list-missing",
355 selftest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);
357 /* Check for missing cells property */
358 rc = of_parse_phandle_with_args(np, "phandle-list",
359 "#phandle-cells-missing", 0, &args);
360 selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
361 rc = of_count_phandle_with_args(np, "phandle-list",
362 "#phandle-cells-missing");
363 selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
365 /* Check for bad phandle in list */
366 rc = of_parse_phandle_with_args(np, "phandle-list-bad-phandle",
367 "#phandle-cells", 0, &args);
368 selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
369 rc = of_count_phandle_with_args(np, "phandle-list-bad-phandle",
371 selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
373 /* Check for incorrectly formed argument list */
374 rc = of_parse_phandle_with_args(np, "phandle-list-bad-args",
375 "#phandle-cells", 1, &args);
376 selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
377 rc = of_count_phandle_with_args(np, "phandle-list-bad-args",
379 selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
382 static void __init of_selftest_property_string(void)
384 const char *strings[4];
385 struct device_node *np;
388 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
390 pr_err("No testcase data in device tree\n");
394 rc = of_property_match_string(np, "phandle-list-names", "first");
395 selftest(rc == 0, "first expected:0 got:%i\n", rc);
396 rc = of_property_match_string(np, "phandle-list-names", "second");
397 selftest(rc == 1, "second expected:1 got:%i\n", rc);
398 rc = of_property_match_string(np, "phandle-list-names", "third");
399 selftest(rc == 2, "third expected:2 got:%i\n", rc);
400 rc = of_property_match_string(np, "phandle-list-names", "fourth");
401 selftest(rc == -ENODATA, "unmatched string; rc=%i\n", rc);
402 rc = of_property_match_string(np, "missing-property", "blah");
403 selftest(rc == -EINVAL, "missing property; rc=%i\n", rc);
404 rc = of_property_match_string(np, "empty-property", "blah");
405 selftest(rc == -ENODATA, "empty property; rc=%i\n", rc);
406 rc = of_property_match_string(np, "unterminated-string", "blah");
407 selftest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc);
409 /* of_property_count_strings() tests */
410 rc = of_property_count_strings(np, "string-property");
411 selftest(rc == 1, "Incorrect string count; rc=%i\n", rc);
412 rc = of_property_count_strings(np, "phandle-list-names");
413 selftest(rc == 3, "Incorrect string count; rc=%i\n", rc);
414 rc = of_property_count_strings(np, "unterminated-string");
415 selftest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc);
416 rc = of_property_count_strings(np, "unterminated-string-list");
417 selftest(rc == -EILSEQ, "unterminated string array; rc=%i\n", rc);
419 /* of_property_read_string_index() tests */
420 rc = of_property_read_string_index(np, "string-property", 0, strings);
421 selftest(rc == 0 && !strcmp(strings[0], "foobar"), "of_property_read_string_index() failure; rc=%i\n", rc);
423 rc = of_property_read_string_index(np, "string-property", 1, strings);
424 selftest(rc == -ENODATA && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
425 rc = of_property_read_string_index(np, "phandle-list-names", 0, strings);
426 selftest(rc == 0 && !strcmp(strings[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc);
427 rc = of_property_read_string_index(np, "phandle-list-names", 1, strings);
428 selftest(rc == 0 && !strcmp(strings[0], "second"), "of_property_read_string_index() failure; rc=%i\n", rc);
429 rc = of_property_read_string_index(np, "phandle-list-names", 2, strings);
430 selftest(rc == 0 && !strcmp(strings[0], "third"), "of_property_read_string_index() failure; rc=%i\n", rc);
432 rc = of_property_read_string_index(np, "phandle-list-names", 3, strings);
433 selftest(rc == -ENODATA && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
435 rc = of_property_read_string_index(np, "unterminated-string", 0, strings);
436 selftest(rc == -EILSEQ && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
437 rc = of_property_read_string_index(np, "unterminated-string-list", 0, strings);
438 selftest(rc == 0 && !strcmp(strings[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc);
440 rc = of_property_read_string_index(np, "unterminated-string-list", 2, strings); /* should fail */
441 selftest(rc == -EILSEQ && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
444 /* of_property_read_string_array() tests */
445 rc = of_property_read_string_array(np, "string-property", strings, 4);
446 selftest(rc == 1, "Incorrect string count; rc=%i\n", rc);
447 rc = of_property_read_string_array(np, "phandle-list-names", strings, 4);
448 selftest(rc == 3, "Incorrect string count; rc=%i\n", rc);
449 rc = of_property_read_string_array(np, "unterminated-string", strings, 4);
450 selftest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc);
451 /* -- An incorrectly formed string should cause a failure */
452 rc = of_property_read_string_array(np, "unterminated-string-list", strings, 4);
453 selftest(rc == -EILSEQ, "unterminated string array; rc=%i\n", rc);
454 /* -- parsing the correctly formed strings should still work: */
456 rc = of_property_read_string_array(np, "unterminated-string-list", strings, 2);
457 selftest(rc == 2 && strings[2] == NULL, "of_property_read_string_array() failure; rc=%i\n", rc);
459 rc = of_property_read_string_array(np, "phandle-list-names", strings, 1);
460 selftest(rc == 1 && strings[1] == NULL, "Overwrote end of string array; rc=%i, str='%s'\n", rc, strings[1]);
463 #define propcmp(p1, p2) (((p1)->length == (p2)->length) && \
464 (p1)->value && (p2)->value && \
465 !memcmp((p1)->value, (p2)->value, (p1)->length) && \
466 !strcmp((p1)->name, (p2)->name))
467 static void __init of_selftest_property_copy(void)
469 #ifdef CONFIG_OF_DYNAMIC
470 struct property p1 = { .name = "p1", .length = 0, .value = "" };
471 struct property p2 = { .name = "p2", .length = 5, .value = "abcd" };
472 struct property *new;
474 new = __of_prop_dup(&p1, GFP_KERNEL);
475 selftest(new && propcmp(&p1, new), "empty property didn't copy correctly\n");
480 new = __of_prop_dup(&p2, GFP_KERNEL);
481 selftest(new && propcmp(&p2, new), "non-empty property didn't copy correctly\n");
488 static void __init of_selftest_changeset(void)
490 #ifdef CONFIG_OF_DYNAMIC
491 struct property *ppadd, padd = { .name = "prop-add", .length = 0, .value = "" };
492 struct property *ppupdate, pupdate = { .name = "prop-update", .length = 5, .value = "abcd" };
493 struct property *ppremove;
494 struct device_node *n1, *n2, *n21, *nremove, *parent, *np;
495 struct of_changeset chgset;
497 n1 = __of_node_dup(NULL, "/testcase-data/changeset/n1");
498 selftest(n1, "testcase setup failure\n");
499 n2 = __of_node_dup(NULL, "/testcase-data/changeset/n2");
500 selftest(n2, "testcase setup failure\n");
501 n21 = __of_node_dup(NULL, "%s/%s", "/testcase-data/changeset/n2", "n21");
502 selftest(n21, "testcase setup failure %p\n", n21);
503 nremove = of_find_node_by_path("/testcase-data/changeset/node-remove");
504 selftest(nremove, "testcase setup failure\n");
505 ppadd = __of_prop_dup(&padd, GFP_KERNEL);
506 selftest(ppadd, "testcase setup failure\n");
507 ppupdate = __of_prop_dup(&pupdate, GFP_KERNEL);
508 selftest(ppupdate, "testcase setup failure\n");
509 parent = nremove->parent;
514 ppremove = of_find_property(parent, "prop-remove", NULL);
515 selftest(ppremove, "failed to find removal prop");
517 of_changeset_init(&chgset);
518 selftest(!of_changeset_attach_node(&chgset, n1), "fail attach n1\n");
519 selftest(!of_changeset_attach_node(&chgset, n2), "fail attach n2\n");
520 selftest(!of_changeset_detach_node(&chgset, nremove), "fail remove node\n");
521 selftest(!of_changeset_attach_node(&chgset, n21), "fail attach n21\n");
522 selftest(!of_changeset_add_property(&chgset, parent, ppadd), "fail add prop\n");
523 selftest(!of_changeset_update_property(&chgset, parent, ppupdate), "fail update prop\n");
524 selftest(!of_changeset_remove_property(&chgset, parent, ppremove), "fail remove prop\n");
525 mutex_lock(&of_mutex);
526 selftest(!of_changeset_apply(&chgset), "apply failed\n");
527 mutex_unlock(&of_mutex);
529 /* Make sure node names are constructed correctly */
530 selftest((np = of_find_node_by_path("/testcase-data/changeset/n2/n21")),
531 "'%s' not added\n", n21->full_name);
534 mutex_lock(&of_mutex);
535 selftest(!of_changeset_revert(&chgset), "revert failed\n");
536 mutex_unlock(&of_mutex);
538 of_changeset_destroy(&chgset);
542 static void __init of_selftest_parse_interrupts(void)
544 struct device_node *np;
545 struct of_phandle_args args;
548 np = of_find_node_by_path("/testcase-data/interrupts/interrupts0");
550 pr_err("missing testcase data\n");
554 for (i = 0; i < 4; i++) {
557 rc = of_irq_parse_one(np, i, &args);
560 passed &= (args.args_count == 1);
561 passed &= (args.args[0] == (i + 1));
563 selftest(passed, "index %i - data error on node %s rc=%i\n",
564 i, args.np->full_name, rc);
568 np = of_find_node_by_path("/testcase-data/interrupts/interrupts1");
570 pr_err("missing testcase data\n");
574 for (i = 0; i < 4; i++) {
577 rc = of_irq_parse_one(np, i, &args);
579 /* Test the values from tests-phandle.dtsi */
583 passed &= (args.args_count == 1);
584 passed &= (args.args[0] == 9);
588 passed &= (args.args_count == 3);
589 passed &= (args.args[0] == 10);
590 passed &= (args.args[1] == 11);
591 passed &= (args.args[2] == 12);
595 passed &= (args.args_count == 2);
596 passed &= (args.args[0] == 13);
597 passed &= (args.args[1] == 14);
601 passed &= (args.args_count == 2);
602 passed &= (args.args[0] == 15);
603 passed &= (args.args[1] == 16);
608 selftest(passed, "index %i - data error on node %s rc=%i\n",
609 i, args.np->full_name, rc);
614 static void __init of_selftest_parse_interrupts_extended(void)
616 struct device_node *np;
617 struct of_phandle_args args;
620 np = of_find_node_by_path("/testcase-data/interrupts/interrupts-extended0");
622 pr_err("missing testcase data\n");
626 for (i = 0; i < 7; i++) {
628 rc = of_irq_parse_one(np, i, &args);
630 /* Test the values from tests-phandle.dtsi */
634 passed &= (args.args_count == 1);
635 passed &= (args.args[0] == 1);
639 passed &= (args.args_count == 3);
640 passed &= (args.args[0] == 2);
641 passed &= (args.args[1] == 3);
642 passed &= (args.args[2] == 4);
646 passed &= (args.args_count == 2);
647 passed &= (args.args[0] == 5);
648 passed &= (args.args[1] == 6);
652 passed &= (args.args_count == 1);
653 passed &= (args.args[0] == 9);
657 passed &= (args.args_count == 3);
658 passed &= (args.args[0] == 10);
659 passed &= (args.args[1] == 11);
660 passed &= (args.args[2] == 12);
664 passed &= (args.args_count == 2);
665 passed &= (args.args[0] == 13);
666 passed &= (args.args[1] == 14);
670 passed &= (args.args_count == 1);
671 passed &= (args.args[0] == 15);
677 selftest(passed, "index %i - data error on node %s rc=%i\n",
678 i, args.np->full_name, rc);
683 static struct of_device_id match_node_table[] = {
684 { .data = "A", .name = "name0", }, /* Name alone is lowest priority */
685 { .data = "B", .type = "type1", }, /* followed by type alone */
687 { .data = "Ca", .name = "name2", .type = "type1", }, /* followed by both together */
688 { .data = "Cb", .name = "name2", }, /* Only match when type doesn't match */
689 { .data = "Cc", .name = "name2", .type = "type2", },
691 { .data = "E", .compatible = "compat3" },
692 { .data = "G", .compatible = "compat2", },
693 { .data = "H", .compatible = "compat2", .name = "name5", },
694 { .data = "I", .compatible = "compat2", .type = "type1", },
695 { .data = "J", .compatible = "compat2", .type = "type1", .name = "name8", },
696 { .data = "K", .compatible = "compat2", .name = "name9", },
703 } match_node_tests[] = {
704 { .path = "/testcase-data/match-node/name0", .data = "A", },
705 { .path = "/testcase-data/match-node/name1", .data = "B", },
706 { .path = "/testcase-data/match-node/a/name2", .data = "Ca", },
707 { .path = "/testcase-data/match-node/b/name2", .data = "Cb", },
708 { .path = "/testcase-data/match-node/c/name2", .data = "Cc", },
709 { .path = "/testcase-data/match-node/name3", .data = "E", },
710 { .path = "/testcase-data/match-node/name4", .data = "G", },
711 { .path = "/testcase-data/match-node/name5", .data = "H", },
712 { .path = "/testcase-data/match-node/name6", .data = "G", },
713 { .path = "/testcase-data/match-node/name7", .data = "I", },
714 { .path = "/testcase-data/match-node/name8", .data = "J", },
715 { .path = "/testcase-data/match-node/name9", .data = "K", },
718 static void __init of_selftest_match_node(void)
720 struct device_node *np;
721 const struct of_device_id *match;
724 for (i = 0; i < ARRAY_SIZE(match_node_tests); i++) {
725 np = of_find_node_by_path(match_node_tests[i].path);
727 selftest(0, "missing testcase node %s\n",
728 match_node_tests[i].path);
732 match = of_match_node(match_node_table, np);
734 selftest(0, "%s didn't match anything\n",
735 match_node_tests[i].path);
739 if (strcmp(match->data, match_node_tests[i].data) != 0) {
740 selftest(0, "%s got wrong match. expected %s, got %s\n",
741 match_node_tests[i].path, match_node_tests[i].data,
742 (const char *)match->data);
745 selftest(1, "passed");
749 struct device test_bus = {
750 .init_name = "unittest-bus",
752 static void __init of_selftest_platform_populate(void)
755 struct device_node *np, *child, *grandchild;
756 struct platform_device *pdev;
757 struct of_device_id match[] = {
758 { .compatible = "test-device", },
762 np = of_find_node_by_path("/testcase-data");
763 of_platform_populate(np, of_default_bus_match_table, NULL, NULL);
765 /* Test that a missing irq domain returns -EPROBE_DEFER */
766 np = of_find_node_by_path("/testcase-data/testcase-device1");
767 pdev = of_find_device_by_node(np);
768 selftest(pdev, "device 1 creation failed\n");
770 irq = platform_get_irq(pdev, 0);
771 selftest(irq == -EPROBE_DEFER, "device deferred probe failed - %d\n", irq);
773 /* Test that a parsing failure does not return -EPROBE_DEFER */
774 np = of_find_node_by_path("/testcase-data/testcase-device2");
775 pdev = of_find_device_by_node(np);
776 selftest(pdev, "device 2 creation failed\n");
777 irq = platform_get_irq(pdev, 0);
778 selftest(irq < 0 && irq != -EPROBE_DEFER, "device parsing error failed - %d\n", irq);
780 if (selftest(np = of_find_node_by_path("/testcase-data/platform-tests"),
781 "No testcase data in device tree\n"));
784 if (selftest(!(rc = device_register(&test_bus)),
785 "testbus registration failed; rc=%i\n", rc));
788 for_each_child_of_node(np, child) {
789 of_platform_populate(child, match, NULL, &test_bus);
790 for_each_child_of_node(child, grandchild)
791 selftest(of_find_device_by_node(grandchild),
792 "Could not create device for node '%s'\n",
796 of_platform_depopulate(&test_bus);
797 for_each_child_of_node(np, child) {
798 for_each_child_of_node(child, grandchild)
799 selftest(!of_find_device_by_node(grandchild),
800 "device didn't get destroyed '%s'\n",
804 device_unregister(&test_bus);
809 * update_node_properties - adds the properties
810 * of np into dup node (present in live tree) and
811 * updates parent of children of np to dup.
813 * @np: node already present in live tree
814 * @dup: node present in live tree to be updated
816 static void update_node_properties(struct device_node *np,
817 struct device_node *dup)
819 struct property *prop;
820 struct device_node *child;
822 for_each_property_of_node(np, prop)
823 of_add_property(dup, prop);
825 for_each_child_of_node(np, child)
830 * attach_node_and_children - attaches nodes
831 * and its children to live tree
833 * @np: Node to attach to live tree
835 static int attach_node_and_children(struct device_node *np)
837 struct device_node *next, *dup, *child;
840 dup = of_find_node_by_path(np->full_name);
842 update_node_properties(np, dup);
849 mutex_lock(&of_mutex);
850 raw_spin_lock_irqsave(&devtree_lock, flags);
851 np->sibling = np->parent->child;
852 np->parent->child = np;
853 of_node_clear_flag(np, OF_DETACHED);
854 raw_spin_unlock_irqrestore(&devtree_lock, flags);
856 __of_attach_node_sysfs(np);
857 mutex_unlock(&of_mutex);
860 next = child->sibling;
861 attach_node_and_children(child);
869 * selftest_data_add - Reads, copies data from
870 * linked tree and attaches it to the live tree
872 static int __init selftest_data_add(void)
875 struct device_node *selftest_data_node, *np;
876 extern uint8_t __dtb_testcases_begin[];
877 extern uint8_t __dtb_testcases_end[];
878 const int size = __dtb_testcases_end - __dtb_testcases_begin;
882 pr_warn("%s: No testcase data to attach; not running tests\n",
888 selftest_data = kmemdup(__dtb_testcases_begin, size, GFP_KERNEL);
890 if (!selftest_data) {
891 pr_warn("%s: Failed to allocate memory for selftest_data; "
892 "not running tests\n", __func__);
895 of_fdt_unflatten_tree(selftest_data, &selftest_data_node);
896 if (!selftest_data_node) {
897 pr_warn("%s: No tree to attach; not running tests\n", __func__);
900 of_node_set_flag(selftest_data_node, OF_DETACHED);
901 rc = of_resolve_phandles(selftest_data_node);
903 pr_err("%s: Failed to resolve phandles (rc=%i)\n", __func__, rc);
908 of_root = selftest_data_node;
909 for_each_of_allnodes(np)
910 __of_attach_node_sysfs(np);
911 of_aliases = of_find_node_by_path("/aliases");
912 of_chosen = of_find_node_by_path("/chosen");
916 /* attach the sub-tree to live tree */
917 np = selftest_data_node->child;
919 struct device_node *next = np->sibling;
920 np->parent = of_root;
921 attach_node_and_children(np);
927 #ifdef CONFIG_OF_OVERLAY
929 static int selftest_probe(struct platform_device *pdev)
931 struct device *dev = &pdev->dev;
932 struct device_node *np = dev->of_node;
935 dev_err(dev, "No OF data for device\n");
940 dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
942 of_platform_populate(np, NULL, NULL, &pdev->dev);
947 static int selftest_remove(struct platform_device *pdev)
949 struct device *dev = &pdev->dev;
950 struct device_node *np = dev->of_node;
952 dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
956 static struct of_device_id selftest_match[] = {
957 { .compatible = "selftest", },
961 static struct platform_driver selftest_driver = {
962 .probe = selftest_probe,
963 .remove = selftest_remove,
966 .owner = THIS_MODULE,
967 .of_match_table = of_match_ptr(selftest_match),
971 /* get the platform device instantiated at the path */
972 static struct platform_device *of_path_to_platform_device(const char *path)
974 struct device_node *np;
975 struct platform_device *pdev;
977 np = of_find_node_by_path(path);
981 pdev = of_find_device_by_node(np);
987 /* find out if a platform device exists at that path */
988 static int of_path_platform_device_exists(const char *path)
990 struct platform_device *pdev;
992 pdev = of_path_to_platform_device(path);
993 platform_device_put(pdev);
997 #if IS_BUILTIN(CONFIG_I2C)
999 /* get the i2c client device instantiated at the path */
1000 static struct i2c_client *of_path_to_i2c_client(const char *path)
1002 struct device_node *np;
1003 struct i2c_client *client;
1005 np = of_find_node_by_path(path);
1009 client = of_find_i2c_device_by_node(np);
1015 /* find out if a i2c client device exists at that path */
1016 static int of_path_i2c_client_exists(const char *path)
1018 struct i2c_client *client;
1020 client = of_path_to_i2c_client(path);
1022 put_device(&client->dev);
1023 return client != NULL;
1026 static int of_path_i2c_client_exists(const char *path)
1037 static int of_path_device_type_exists(const char *path,
1038 enum overlay_type ovtype)
1042 return of_path_platform_device_exists(path);
1044 return of_path_i2c_client_exists(path);
1049 static const char *selftest_path(int nr, enum overlay_type ovtype)
1052 static char buf[256];
1056 base = "/testcase-data/overlay-node/test-bus";
1059 base = "/testcase-data/overlay-node/test-bus/i2c-test-bus";
1065 snprintf(buf, sizeof(buf) - 1, "%s/test-selftest%d", base, nr);
1066 buf[sizeof(buf) - 1] = '\0';
1070 static int of_selftest_device_exists(int selftest_nr, enum overlay_type ovtype)
1074 path = selftest_path(selftest_nr, ovtype);
1078 return of_path_platform_device_exists(path);
1080 return of_path_i2c_client_exists(path);
1085 static const char *overlay_path(int nr)
1087 static char buf[256];
1089 snprintf(buf, sizeof(buf) - 1,
1090 "/testcase-data/overlay%d", nr);
1091 buf[sizeof(buf) - 1] = '\0';
1096 static const char *bus_path = "/testcase-data/overlay-node/test-bus";
1098 static int of_selftest_apply_overlay(int selftest_nr, int overlay_nr,
1101 struct device_node *np = NULL;
1104 np = of_find_node_by_path(overlay_path(overlay_nr));
1106 selftest(0, "could not find overlay node @\"%s\"\n",
1107 overlay_path(overlay_nr));
1112 ret = of_overlay_create(np);
1114 selftest(0, "could not create overlay from \"%s\"\n",
1115 overlay_path(overlay_nr));
1131 /* apply an overlay while checking before and after states */
1132 static int of_selftest_apply_overlay_check(int overlay_nr, int selftest_nr,
1133 int before, int after, enum overlay_type ovtype)
1137 /* selftest device must not be in before state */
1138 if (of_selftest_device_exists(selftest_nr, ovtype) != before) {
1139 selftest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
1140 overlay_path(overlay_nr),
1141 selftest_path(selftest_nr, ovtype),
1142 !before ? "enabled" : "disabled");
1146 ret = of_selftest_apply_overlay(overlay_nr, selftest_nr, NULL);
1148 /* of_selftest_apply_overlay already called selftest() */
1152 /* selftest device must be to set to after state */
1153 if (of_selftest_device_exists(selftest_nr, ovtype) != after) {
1154 selftest(0, "overlay @\"%s\" failed to create @\"%s\" %s\n",
1155 overlay_path(overlay_nr),
1156 selftest_path(selftest_nr, ovtype),
1157 !after ? "enabled" : "disabled");
1164 /* apply an overlay and then revert it while checking before, after states */
1165 static int of_selftest_apply_revert_overlay_check(int overlay_nr,
1166 int selftest_nr, int before, int after,
1167 enum overlay_type ovtype)
1171 /* selftest device must be in before state */
1172 if (of_selftest_device_exists(selftest_nr, ovtype) != before) {
1173 selftest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
1174 overlay_path(overlay_nr),
1175 selftest_path(selftest_nr, ovtype),
1176 !before ? "enabled" : "disabled");
1180 /* apply the overlay */
1181 ret = of_selftest_apply_overlay(overlay_nr, selftest_nr, &ov_id);
1183 /* of_selftest_apply_overlay already called selftest() */
1187 /* selftest device must be in after state */
1188 if (of_selftest_device_exists(selftest_nr, ovtype) != after) {
1189 selftest(0, "overlay @\"%s\" failed to create @\"%s\" %s\n",
1190 overlay_path(overlay_nr),
1191 selftest_path(selftest_nr, ovtype),
1192 !after ? "enabled" : "disabled");
1196 ret = of_overlay_destroy(ov_id);
1198 selftest(0, "overlay @\"%s\" failed to be destroyed @\"%s\"\n",
1199 overlay_path(overlay_nr),
1200 selftest_path(selftest_nr, ovtype));
1204 /* selftest device must be again in before state */
1205 if (of_selftest_device_exists(selftest_nr, PDEV_OVERLAY) != before) {
1206 selftest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
1207 overlay_path(overlay_nr),
1208 selftest_path(selftest_nr, ovtype),
1209 !before ? "enabled" : "disabled");
1216 /* test activation of device */
1217 static void of_selftest_overlay_0(void)
1221 /* device should enable */
1222 ret = of_selftest_apply_overlay_check(0, 0, 0, 1, PDEV_OVERLAY);
1226 selftest(1, "overlay test %d passed\n", 0);
1229 /* test deactivation of device */
1230 static void of_selftest_overlay_1(void)
1234 /* device should disable */
1235 ret = of_selftest_apply_overlay_check(1, 1, 1, 0, PDEV_OVERLAY);
1239 selftest(1, "overlay test %d passed\n", 1);
1242 /* test activation of device */
1243 static void of_selftest_overlay_2(void)
1247 /* device should enable */
1248 ret = of_selftest_apply_overlay_check(2, 2, 0, 1, PDEV_OVERLAY);
1252 selftest(1, "overlay test %d passed\n", 2);
1255 /* test deactivation of device */
1256 static void of_selftest_overlay_3(void)
1260 /* device should disable */
1261 ret = of_selftest_apply_overlay_check(3, 3, 1, 0, PDEV_OVERLAY);
1265 selftest(1, "overlay test %d passed\n", 3);
1268 /* test activation of a full device node */
1269 static void of_selftest_overlay_4(void)
1273 /* device should disable */
1274 ret = of_selftest_apply_overlay_check(4, 4, 0, 1, PDEV_OVERLAY);
1278 selftest(1, "overlay test %d passed\n", 4);
1281 /* test overlay apply/revert sequence */
1282 static void of_selftest_overlay_5(void)
1286 /* device should disable */
1287 ret = of_selftest_apply_revert_overlay_check(5, 5, 0, 1, PDEV_OVERLAY);
1291 selftest(1, "overlay test %d passed\n", 5);
1294 /* test overlay application in sequence */
1295 static void of_selftest_overlay_6(void)
1297 struct device_node *np;
1298 int ret, i, ov_id[2];
1299 int overlay_nr = 6, selftest_nr = 6;
1300 int before = 0, after = 1;
1302 /* selftest device must be in before state */
1303 for (i = 0; i < 2; i++) {
1304 if (of_selftest_device_exists(selftest_nr + i, PDEV_OVERLAY)
1306 selftest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
1307 overlay_path(overlay_nr + i),
1308 selftest_path(selftest_nr + i,
1310 !before ? "enabled" : "disabled");
1315 /* apply the overlays */
1316 for (i = 0; i < 2; i++) {
1318 np = of_find_node_by_path(overlay_path(overlay_nr + i));
1320 selftest(0, "could not find overlay node @\"%s\"\n",
1321 overlay_path(overlay_nr + i));
1325 ret = of_overlay_create(np);
1327 selftest(0, "could not create overlay from \"%s\"\n",
1328 overlay_path(overlay_nr + i));
1334 for (i = 0; i < 2; i++) {
1335 /* selftest device must be in after state */
1336 if (of_selftest_device_exists(selftest_nr + i, PDEV_OVERLAY)
1338 selftest(0, "overlay @\"%s\" failed @\"%s\" %s\n",
1339 overlay_path(overlay_nr + i),
1340 selftest_path(selftest_nr + i,
1342 !after ? "enabled" : "disabled");
1347 for (i = 1; i >= 0; i--) {
1348 ret = of_overlay_destroy(ov_id[i]);
1350 selftest(0, "overlay @\"%s\" failed destroy @\"%s\"\n",
1351 overlay_path(overlay_nr + i),
1352 selftest_path(selftest_nr + i,
1358 for (i = 0; i < 2; i++) {
1359 /* selftest device must be again in before state */
1360 if (of_selftest_device_exists(selftest_nr + i, PDEV_OVERLAY)
1362 selftest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
1363 overlay_path(overlay_nr + i),
1364 selftest_path(selftest_nr + i,
1366 !before ? "enabled" : "disabled");
1371 selftest(1, "overlay test %d passed\n", 6);
1374 /* test overlay application in sequence */
1375 static void of_selftest_overlay_8(void)
1377 struct device_node *np;
1378 int ret, i, ov_id[2];
1379 int overlay_nr = 8, selftest_nr = 8;
1381 /* we don't care about device state in this test */
1383 /* apply the overlays */
1384 for (i = 0; i < 2; i++) {
1386 np = of_find_node_by_path(overlay_path(overlay_nr + i));
1388 selftest(0, "could not find overlay node @\"%s\"\n",
1389 overlay_path(overlay_nr + i));
1393 ret = of_overlay_create(np);
1395 selftest(0, "could not create overlay from \"%s\"\n",
1396 overlay_path(overlay_nr + i));
1402 /* now try to remove first overlay (it should fail) */
1403 ret = of_overlay_destroy(ov_id[0]);
1405 selftest(0, "overlay @\"%s\" was destroyed @\"%s\"\n",
1406 overlay_path(overlay_nr + 0),
1407 selftest_path(selftest_nr,
1412 /* removing them in order should work */
1413 for (i = 1; i >= 0; i--) {
1414 ret = of_overlay_destroy(ov_id[i]);
1416 selftest(0, "overlay @\"%s\" not destroyed @\"%s\"\n",
1417 overlay_path(overlay_nr + i),
1418 selftest_path(selftest_nr,
1424 selftest(1, "overlay test %d passed\n", 8);
1427 /* test insertion of a bus with parent devices */
1428 static void of_selftest_overlay_10(void)
1433 /* device should disable */
1434 ret = of_selftest_apply_overlay_check(10, 10, 0, 1, PDEV_OVERLAY);
1435 if (selftest(ret == 0,
1436 "overlay test %d failed; overlay application\n", 10))
1439 child_path = kasprintf(GFP_KERNEL, "%s/test-selftest101",
1440 selftest_path(10, PDEV_OVERLAY));
1441 if (selftest(child_path, "overlay test %d failed; kasprintf\n", 10))
1444 ret = of_path_device_type_exists(child_path, PDEV_OVERLAY);
1446 if (selftest(ret, "overlay test %d failed; no child device\n", 10))
1450 /* test insertion of a bus with parent devices (and revert) */
1451 static void of_selftest_overlay_11(void)
1455 /* device should disable */
1456 ret = of_selftest_apply_revert_overlay_check(11, 11, 0, 1,
1458 if (selftest(ret == 0,
1459 "overlay test %d failed; overlay application\n", 11))
1463 #if IS_BUILTIN(CONFIG_I2C) && IS_ENABLED(CONFIG_OF_OVERLAY)
1465 struct selftest_i2c_bus_data {
1466 struct platform_device *pdev;
1467 struct i2c_adapter adap;
1470 static int selftest_i2c_master_xfer(struct i2c_adapter *adap,
1471 struct i2c_msg *msgs, int num)
1473 struct selftest_i2c_bus_data *std = i2c_get_adapdata(adap);
1480 static u32 selftest_i2c_functionality(struct i2c_adapter *adap)
1482 return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
1485 static const struct i2c_algorithm selftest_i2c_algo = {
1486 .master_xfer = selftest_i2c_master_xfer,
1487 .functionality = selftest_i2c_functionality,
1490 static int selftest_i2c_bus_probe(struct platform_device *pdev)
1492 struct device *dev = &pdev->dev;
1493 struct device_node *np = dev->of_node;
1494 struct selftest_i2c_bus_data *std;
1495 struct i2c_adapter *adap;
1499 dev_err(dev, "No OF data for device\n");
1504 dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
1506 std = devm_kzalloc(dev, sizeof(*std), GFP_KERNEL);
1508 dev_err(dev, "Failed to allocate selftest i2c data\n");
1512 /* link them together */
1514 platform_set_drvdata(pdev, std);
1517 i2c_set_adapdata(adap, std);
1519 strlcpy(adap->name, pdev->name, sizeof(adap->name));
1520 adap->class = I2C_CLASS_DEPRECATED;
1521 adap->algo = &selftest_i2c_algo;
1522 adap->dev.parent = dev;
1523 adap->dev.of_node = dev->of_node;
1524 adap->timeout = 5 * HZ;
1527 ret = i2c_add_numbered_adapter(adap);
1529 dev_err(dev, "Failed to add I2C adapter\n");
1536 static int selftest_i2c_bus_remove(struct platform_device *pdev)
1538 struct device *dev = &pdev->dev;
1539 struct device_node *np = dev->of_node;
1540 struct selftest_i2c_bus_data *std = platform_get_drvdata(pdev);
1542 dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
1543 i2c_del_adapter(&std->adap);
1548 static struct of_device_id selftest_i2c_bus_match[] = {
1549 { .compatible = "selftest-i2c-bus", },
1553 static struct platform_driver selftest_i2c_bus_driver = {
1554 .probe = selftest_i2c_bus_probe,
1555 .remove = selftest_i2c_bus_remove,
1557 .name = "selftest-i2c-bus",
1558 .of_match_table = of_match_ptr(selftest_i2c_bus_match),
1562 static int selftest_i2c_dev_probe(struct i2c_client *client,
1563 const struct i2c_device_id *id)
1565 struct device *dev = &client->dev;
1566 struct device_node *np = client->dev.of_node;
1569 dev_err(dev, "No OF node\n");
1573 dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
1578 static int selftest_i2c_dev_remove(struct i2c_client *client)
1580 struct device *dev = &client->dev;
1581 struct device_node *np = client->dev.of_node;
1583 dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
1587 static const struct i2c_device_id selftest_i2c_dev_id[] = {
1588 { .name = "selftest-i2c-dev" },
1592 static struct i2c_driver selftest_i2c_dev_driver = {
1594 .name = "selftest-i2c-dev",
1595 .owner = THIS_MODULE,
1597 .probe = selftest_i2c_dev_probe,
1598 .remove = selftest_i2c_dev_remove,
1599 .id_table = selftest_i2c_dev_id,
1602 #if IS_BUILTIN(CONFIG_I2C_MUX)
1604 struct selftest_i2c_mux_data {
1606 struct i2c_adapter *adap[];
1609 static int selftest_i2c_mux_select_chan(struct i2c_adapter *adap,
1610 void *client, u32 chan)
1615 static int selftest_i2c_mux_probe(struct i2c_client *client,
1616 const struct i2c_device_id *id)
1618 int ret, i, nchans, size;
1619 struct device *dev = &client->dev;
1620 struct i2c_adapter *adap = to_i2c_adapter(dev->parent);
1621 struct device_node *np = client->dev.of_node, *child;
1622 struct selftest_i2c_mux_data *stm;
1625 dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
1628 dev_err(dev, "No OF node\n");
1633 for_each_child_of_node(np, child) {
1634 ret = of_property_read_u32(child, "reg", ®);
1637 if (max_reg == (u32)-1 || reg > max_reg)
1640 nchans = max_reg == (u32)-1 ? 0 : max_reg + 1;
1642 dev_err(dev, "No channels\n");
1646 size = offsetof(struct selftest_i2c_mux_data, adap[nchans]);
1647 stm = devm_kzalloc(dev, size, GFP_KERNEL);
1649 dev_err(dev, "Out of memory\n");
1652 stm->nchans = nchans;
1653 for (i = 0; i < nchans; i++) {
1654 stm->adap[i] = i2c_add_mux_adapter(adap, dev, client,
1655 0, i, 0, selftest_i2c_mux_select_chan, NULL);
1656 if (!stm->adap[i]) {
1657 dev_err(dev, "Failed to register mux #%d\n", i);
1658 for (i--; i >= 0; i--)
1659 i2c_del_mux_adapter(stm->adap[i]);
1664 i2c_set_clientdata(client, stm);
1669 static int selftest_i2c_mux_remove(struct i2c_client *client)
1671 struct device *dev = &client->dev;
1672 struct device_node *np = client->dev.of_node;
1673 struct selftest_i2c_mux_data *stm = i2c_get_clientdata(client);
1676 dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
1677 for (i = stm->nchans - 1; i >= 0; i--)
1678 i2c_del_mux_adapter(stm->adap[i]);
1682 static const struct i2c_device_id selftest_i2c_mux_id[] = {
1683 { .name = "selftest-i2c-mux" },
1687 static struct i2c_driver selftest_i2c_mux_driver = {
1689 .name = "selftest-i2c-mux",
1690 .owner = THIS_MODULE,
1692 .probe = selftest_i2c_mux_probe,
1693 .remove = selftest_i2c_mux_remove,
1694 .id_table = selftest_i2c_mux_id,
1699 static int of_selftest_overlay_i2c_init(void)
1703 ret = i2c_add_driver(&selftest_i2c_dev_driver);
1704 if (selftest(ret == 0,
1705 "could not register selftest i2c device driver\n"))
1708 ret = platform_driver_register(&selftest_i2c_bus_driver);
1709 if (selftest(ret == 0,
1710 "could not register selftest i2c bus driver\n"))
1713 #if IS_BUILTIN(CONFIG_I2C_MUX)
1714 ret = i2c_add_driver(&selftest_i2c_mux_driver);
1715 if (selftest(ret == 0,
1716 "could not register selftest i2c mux driver\n"))
1723 static void of_selftest_overlay_i2c_cleanup(void)
1725 #if IS_BUILTIN(CONFIG_I2C_MUX)
1726 i2c_del_driver(&selftest_i2c_mux_driver);
1728 platform_driver_unregister(&selftest_i2c_bus_driver);
1729 i2c_del_driver(&selftest_i2c_dev_driver);
1732 static void of_selftest_overlay_i2c_12(void)
1736 /* device should enable */
1737 ret = of_selftest_apply_overlay_check(12, 12, 0, 1, I2C_OVERLAY);
1741 selftest(1, "overlay test %d passed\n", 12);
1744 /* test deactivation of device */
1745 static void of_selftest_overlay_i2c_13(void)
1749 /* device should disable */
1750 ret = of_selftest_apply_overlay_check(13, 13, 1, 0, I2C_OVERLAY);
1754 selftest(1, "overlay test %d passed\n", 13);
1757 /* just check for i2c mux existence */
1758 static void of_selftest_overlay_i2c_14(void)
1762 static void of_selftest_overlay_i2c_15(void)
1766 /* device should enable */
1767 ret = of_selftest_apply_overlay_check(16, 15, 0, 1, I2C_OVERLAY);
1771 selftest(1, "overlay test %d passed\n", 15);
1776 static inline void of_selftest_overlay_i2c_14(void) { }
1777 static inline void of_selftest_overlay_i2c_15(void) { }
1781 static void __init of_selftest_overlay(void)
1783 struct device_node *bus_np = NULL;
1786 ret = platform_driver_register(&selftest_driver);
1788 selftest(0, "could not register selftest driver\n");
1792 bus_np = of_find_node_by_path(bus_path);
1793 if (bus_np == NULL) {
1794 selftest(0, "could not find bus_path \"%s\"\n", bus_path);
1798 ret = of_platform_populate(bus_np, of_default_bus_match_table,
1801 selftest(0, "could not populate bus @ \"%s\"\n", bus_path);
1805 if (!of_selftest_device_exists(100, PDEV_OVERLAY)) {
1806 selftest(0, "could not find selftest0 @ \"%s\"\n",
1807 selftest_path(100, PDEV_OVERLAY));
1811 if (of_selftest_device_exists(101, PDEV_OVERLAY)) {
1812 selftest(0, "selftest1 @ \"%s\" should not exist\n",
1813 selftest_path(101, PDEV_OVERLAY));
1817 selftest(1, "basic infrastructure of overlays passed");
1819 /* tests in sequence */
1820 of_selftest_overlay_0();
1821 of_selftest_overlay_1();
1822 of_selftest_overlay_2();
1823 of_selftest_overlay_3();
1824 of_selftest_overlay_4();
1825 of_selftest_overlay_5();
1826 of_selftest_overlay_6();
1827 of_selftest_overlay_8();
1829 of_selftest_overlay_10();
1830 of_selftest_overlay_11();
1832 #if IS_BUILTIN(CONFIG_I2C)
1833 if (selftest(of_selftest_overlay_i2c_init() == 0, "i2c init failed\n"))
1836 of_selftest_overlay_i2c_12();
1837 of_selftest_overlay_i2c_13();
1838 of_selftest_overlay_i2c_14();
1839 of_selftest_overlay_i2c_15();
1841 of_selftest_overlay_i2c_cleanup();
1845 of_node_put(bus_np);
1849 static inline void __init of_selftest_overlay(void) { }
1852 static int __init of_selftest(void)
1854 struct device_node *np;
1857 /* adding data for selftest */
1858 res = selftest_data_add();
1862 of_aliases = of_find_node_by_path("/aliases");
1864 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
1866 pr_info("No testcase data in device tree; not running tests\n");
1871 pr_info("start of selftest - you will see error messages\n");
1872 of_selftest_check_tree_linkage();
1873 of_selftest_check_phandles();
1874 of_selftest_find_node_by_name();
1875 of_selftest_dynamic();
1876 of_selftest_parse_phandle_with_args();
1877 of_selftest_property_string();
1878 of_selftest_property_copy();
1879 of_selftest_changeset();
1880 of_selftest_parse_interrupts();
1881 of_selftest_parse_interrupts_extended();
1882 of_selftest_match_node();
1883 of_selftest_platform_populate();
1884 of_selftest_overlay();
1886 /* Double check linkage after removing testcase data */
1887 of_selftest_check_tree_linkage();
1889 pr_info("end of selftest - %i passed, %i failed\n",
1890 selftest_results.passed, selftest_results.failed);
1894 late_initcall(of_selftest);