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>
12 #include <linux/of_fdt.h>
13 #include <linux/of_irq.h>
14 #include <linux/of_platform.h>
15 #include <linux/list.h>
16 #include <linux/mutex.h>
17 #include <linux/slab.h>
18 #include <linux/device.h>
19 #include <linux/platform_device.h>
20 #include <linux/of_platform.h>
22 #include <linux/i2c.h>
23 #include <linux/i2c-mux.h>
25 #include <linux/bitops.h>
27 #include "of_private.h"
29 static struct unittest_results
{
34 #define unittest(result, fmt, ...) ({ \
35 bool failed = !(result); \
37 unittest_results.failed++; \
38 pr_err("FAIL %s():%i " fmt, __func__, __LINE__, ##__VA_ARGS__); \
40 unittest_results.passed++; \
41 pr_debug("pass %s():%i\n", __func__, __LINE__); \
46 static void __init
of_unittest_find_node_by_name(void)
48 struct device_node
*np
;
51 np
= of_find_node_by_path("/testcase-data");
52 unittest(np
&& !strcmp("/testcase-data", np
->full_name
),
53 "find /testcase-data failed\n");
56 /* Test if trailing '/' works */
57 np
= of_find_node_by_path("/testcase-data/");
58 unittest(!np
, "trailing '/' on /testcase-data/ should fail\n");
60 np
= of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
61 unittest(np
&& !strcmp("/testcase-data/phandle-tests/consumer-a", np
->full_name
),
62 "find /testcase-data/phandle-tests/consumer-a failed\n");
65 np
= of_find_node_by_path("testcase-alias");
66 unittest(np
&& !strcmp("/testcase-data", np
->full_name
),
67 "find testcase-alias failed\n");
70 /* Test if trailing '/' works on aliases */
71 np
= of_find_node_by_path("testcase-alias/");
72 unittest(!np
, "trailing '/' on testcase-alias/ should fail\n");
74 np
= of_find_node_by_path("testcase-alias/phandle-tests/consumer-a");
75 unittest(np
&& !strcmp("/testcase-data/phandle-tests/consumer-a", np
->full_name
),
76 "find testcase-alias/phandle-tests/consumer-a failed\n");
79 np
= of_find_node_by_path("/testcase-data/missing-path");
80 unittest(!np
, "non-existent path returned node %s\n", np
->full_name
);
83 np
= of_find_node_by_path("missing-alias");
84 unittest(!np
, "non-existent alias returned node %s\n", np
->full_name
);
87 np
= of_find_node_by_path("testcase-alias/missing-path");
88 unittest(!np
, "non-existent alias with relative path returned node %s\n", np
->full_name
);
91 np
= of_find_node_opts_by_path("/testcase-data:testoption", &options
);
92 unittest(np
&& !strcmp("testoption", options
),
93 "option path test failed\n");
96 np
= of_find_node_opts_by_path("/testcase-data:test/option", &options
);
97 unittest(np
&& !strcmp("test/option", options
),
98 "option path test, subcase #1 failed\n");
101 np
= of_find_node_opts_by_path("/testcase-data/testcase-device1:test/option", &options
);
102 unittest(np
&& !strcmp("test/option", options
),
103 "option path test, subcase #2 failed\n");
106 np
= of_find_node_opts_by_path("/testcase-data:testoption", NULL
);
107 unittest(np
, "NULL option path test failed\n");
110 np
= of_find_node_opts_by_path("testcase-alias:testaliasoption",
112 unittest(np
&& !strcmp("testaliasoption", options
),
113 "option alias path test failed\n");
116 np
= of_find_node_opts_by_path("testcase-alias:test/alias/option",
118 unittest(np
&& !strcmp("test/alias/option", options
),
119 "option alias path test, subcase #1 failed\n");
122 np
= of_find_node_opts_by_path("testcase-alias:testaliasoption", NULL
);
123 unittest(np
, "NULL option alias path test failed\n");
126 options
= "testoption";
127 np
= of_find_node_opts_by_path("testcase-alias", &options
);
128 unittest(np
&& !options
, "option clearing test failed\n");
131 options
= "testoption";
132 np
= of_find_node_opts_by_path("/", &options
);
133 unittest(np
&& !options
, "option clearing root node test failed\n");
137 static void __init
of_unittest_dynamic(void)
139 struct device_node
*np
;
140 struct property
*prop
;
142 np
= of_find_node_by_path("/testcase-data");
144 pr_err("missing testcase data\n");
148 /* Array of 4 properties for the purpose of testing */
149 prop
= kzalloc(sizeof(*prop
) * 4, GFP_KERNEL
);
151 unittest(0, "kzalloc() failed\n");
155 /* Add a new property - should pass*/
156 prop
->name
= "new-property";
157 prop
->value
= "new-property-data";
158 prop
->length
= strlen(prop
->value
);
159 unittest(of_add_property(np
, prop
) == 0, "Adding a new property failed\n");
161 /* Try to add an existing property - should fail */
163 prop
->name
= "new-property";
164 prop
->value
= "new-property-data-should-fail";
165 prop
->length
= strlen(prop
->value
);
166 unittest(of_add_property(np
, prop
) != 0,
167 "Adding an existing property should have failed\n");
169 /* Try to modify an existing property - should pass */
170 prop
->value
= "modify-property-data-should-pass";
171 prop
->length
= strlen(prop
->value
);
172 unittest(of_update_property(np
, prop
) == 0,
173 "Updating an existing property should have passed\n");
175 /* Try to modify non-existent property - should pass*/
177 prop
->name
= "modify-property";
178 prop
->value
= "modify-missing-property-data-should-pass";
179 prop
->length
= strlen(prop
->value
);
180 unittest(of_update_property(np
, prop
) == 0,
181 "Updating a missing property should have passed\n");
183 /* Remove property - should pass */
184 unittest(of_remove_property(np
, prop
) == 0,
185 "Removing a property should have passed\n");
187 /* Adding very large property - should pass */
189 prop
->name
= "large-property-PAGE_SIZEx8";
190 prop
->length
= PAGE_SIZE
* 8;
191 prop
->value
= kzalloc(prop
->length
, GFP_KERNEL
);
192 unittest(prop
->value
!= NULL
, "Unable to allocate large buffer\n");
194 unittest(of_add_property(np
, prop
) == 0,
195 "Adding a large property should have passed\n");
198 static int __init
of_unittest_check_node_linkage(struct device_node
*np
)
200 struct device_node
*child
;
203 for_each_child_of_node(np
, child
) {
204 if (child
->parent
!= np
) {
205 pr_err("Child node %s links to wrong parent %s\n",
206 child
->name
, np
->name
);
211 rc
= of_unittest_check_node_linkage(child
);
223 static void __init
of_unittest_check_tree_linkage(void)
225 struct device_node
*np
;
226 int allnode_count
= 0, child_count
;
231 for_each_of_allnodes(np
)
233 child_count
= of_unittest_check_node_linkage(of_root
);
235 unittest(child_count
> 0, "Device node data structure is corrupted\n");
236 unittest(child_count
== allnode_count
,
237 "allnodes list size (%i) doesn't match sibling lists size (%i)\n",
238 allnode_count
, child_count
);
239 pr_debug("allnodes list size (%i); sibling lists size (%i)\n", allnode_count
, child_count
);
243 struct hlist_node node
;
244 struct device_node
*np
;
247 static DEFINE_HASHTABLE(phandle_ht
, 8);
248 static void __init
of_unittest_check_phandles(void)
250 struct device_node
*np
;
251 struct node_hash
*nh
;
252 struct hlist_node
*tmp
;
253 int i
, dup_count
= 0, phandle_count
= 0;
255 for_each_of_allnodes(np
) {
259 hash_for_each_possible(phandle_ht
, nh
, node
, np
->phandle
) {
260 if (nh
->np
->phandle
== np
->phandle
) {
261 pr_info("Duplicate phandle! %i used by %s and %s\n",
262 np
->phandle
, nh
->np
->full_name
, np
->full_name
);
268 nh
= kzalloc(sizeof(*nh
), GFP_KERNEL
);
273 hash_add(phandle_ht
, &nh
->node
, np
->phandle
);
276 unittest(dup_count
== 0, "Found %i duplicates in %i phandles\n",
277 dup_count
, phandle_count
);
280 hash_for_each_safe(phandle_ht
, i
, tmp
, nh
, node
) {
286 static void __init
of_unittest_parse_phandle_with_args(void)
288 struct device_node
*np
;
289 struct of_phandle_args args
;
292 np
= of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
294 pr_err("missing testcase data\n");
298 rc
= of_count_phandle_with_args(np
, "phandle-list", "#phandle-cells");
299 unittest(rc
== 7, "of_count_phandle_with_args() returned %i, expected 7\n", rc
);
301 for (i
= 0; i
< 8; i
++) {
304 rc
= of_parse_phandle_with_args(np
, "phandle-list",
305 "#phandle-cells", i
, &args
);
307 /* Test the values from tests-phandle.dtsi */
311 passed
&= (args
.args_count
== 1);
312 passed
&= (args
.args
[0] == (i
+ 1));
316 passed
&= (args
.args_count
== 2);
317 passed
&= (args
.args
[0] == (i
+ 1));
318 passed
&= (args
.args
[1] == 0);
321 passed
&= (rc
== -ENOENT
);
325 passed
&= (args
.args_count
== 3);
326 passed
&= (args
.args
[0] == (i
+ 1));
327 passed
&= (args
.args
[1] == 4);
328 passed
&= (args
.args
[2] == 3);
332 passed
&= (args
.args_count
== 2);
333 passed
&= (args
.args
[0] == (i
+ 1));
334 passed
&= (args
.args
[1] == 100);
338 passed
&= (args
.args_count
== 0);
342 passed
&= (args
.args_count
== 1);
343 passed
&= (args
.args
[0] == (i
+ 1));
346 passed
&= (rc
== -ENOENT
);
352 unittest(passed
, "index %i - data error on node %s rc=%i\n",
353 i
, args
.np
->full_name
, rc
);
356 /* Check for missing list property */
357 rc
= of_parse_phandle_with_args(np
, "phandle-list-missing",
358 "#phandle-cells", 0, &args
);
359 unittest(rc
== -ENOENT
, "expected:%i got:%i\n", -ENOENT
, rc
);
360 rc
= of_count_phandle_with_args(np
, "phandle-list-missing",
362 unittest(rc
== -ENOENT
, "expected:%i got:%i\n", -ENOENT
, rc
);
364 /* Check for missing cells property */
365 rc
= of_parse_phandle_with_args(np
, "phandle-list",
366 "#phandle-cells-missing", 0, &args
);
367 unittest(rc
== -EINVAL
, "expected:%i got:%i\n", -EINVAL
, rc
);
368 rc
= of_count_phandle_with_args(np
, "phandle-list",
369 "#phandle-cells-missing");
370 unittest(rc
== -EINVAL
, "expected:%i got:%i\n", -EINVAL
, rc
);
372 /* Check for bad phandle in list */
373 rc
= of_parse_phandle_with_args(np
, "phandle-list-bad-phandle",
374 "#phandle-cells", 0, &args
);
375 unittest(rc
== -EINVAL
, "expected:%i got:%i\n", -EINVAL
, rc
);
376 rc
= of_count_phandle_with_args(np
, "phandle-list-bad-phandle",
378 unittest(rc
== -EINVAL
, "expected:%i got:%i\n", -EINVAL
, rc
);
380 /* Check for incorrectly formed argument list */
381 rc
= of_parse_phandle_with_args(np
, "phandle-list-bad-args",
382 "#phandle-cells", 1, &args
);
383 unittest(rc
== -EINVAL
, "expected:%i got:%i\n", -EINVAL
, rc
);
384 rc
= of_count_phandle_with_args(np
, "phandle-list-bad-args",
386 unittest(rc
== -EINVAL
, "expected:%i got:%i\n", -EINVAL
, rc
);
389 static void __init
of_unittest_property_string(void)
391 const char *strings
[4];
392 struct device_node
*np
;
395 np
= of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
397 pr_err("No testcase data in device tree\n");
401 rc
= of_property_match_string(np
, "phandle-list-names", "first");
402 unittest(rc
== 0, "first expected:0 got:%i\n", rc
);
403 rc
= of_property_match_string(np
, "phandle-list-names", "second");
404 unittest(rc
== 1, "second expected:1 got:%i\n", rc
);
405 rc
= of_property_match_string(np
, "phandle-list-names", "third");
406 unittest(rc
== 2, "third expected:2 got:%i\n", rc
);
407 rc
= of_property_match_string(np
, "phandle-list-names", "fourth");
408 unittest(rc
== -ENODATA
, "unmatched string; rc=%i\n", rc
);
409 rc
= of_property_match_string(np
, "missing-property", "blah");
410 unittest(rc
== -EINVAL
, "missing property; rc=%i\n", rc
);
411 rc
= of_property_match_string(np
, "empty-property", "blah");
412 unittest(rc
== -ENODATA
, "empty property; rc=%i\n", rc
);
413 rc
= of_property_match_string(np
, "unterminated-string", "blah");
414 unittest(rc
== -EILSEQ
, "unterminated string; rc=%i\n", rc
);
416 /* of_property_count_strings() tests */
417 rc
= of_property_count_strings(np
, "string-property");
418 unittest(rc
== 1, "Incorrect string count; rc=%i\n", rc
);
419 rc
= of_property_count_strings(np
, "phandle-list-names");
420 unittest(rc
== 3, "Incorrect string count; rc=%i\n", rc
);
421 rc
= of_property_count_strings(np
, "unterminated-string");
422 unittest(rc
== -EILSEQ
, "unterminated string; rc=%i\n", rc
);
423 rc
= of_property_count_strings(np
, "unterminated-string-list");
424 unittest(rc
== -EILSEQ
, "unterminated string array; rc=%i\n", rc
);
426 /* of_property_read_string_index() tests */
427 rc
= of_property_read_string_index(np
, "string-property", 0, strings
);
428 unittest(rc
== 0 && !strcmp(strings
[0], "foobar"), "of_property_read_string_index() failure; rc=%i\n", rc
);
430 rc
= of_property_read_string_index(np
, "string-property", 1, strings
);
431 unittest(rc
== -ENODATA
&& strings
[0] == NULL
, "of_property_read_string_index() failure; rc=%i\n", rc
);
432 rc
= of_property_read_string_index(np
, "phandle-list-names", 0, strings
);
433 unittest(rc
== 0 && !strcmp(strings
[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc
);
434 rc
= of_property_read_string_index(np
, "phandle-list-names", 1, strings
);
435 unittest(rc
== 0 && !strcmp(strings
[0], "second"), "of_property_read_string_index() failure; rc=%i\n", rc
);
436 rc
= of_property_read_string_index(np
, "phandle-list-names", 2, strings
);
437 unittest(rc
== 0 && !strcmp(strings
[0], "third"), "of_property_read_string_index() failure; rc=%i\n", rc
);
439 rc
= of_property_read_string_index(np
, "phandle-list-names", 3, strings
);
440 unittest(rc
== -ENODATA
&& strings
[0] == NULL
, "of_property_read_string_index() failure; rc=%i\n", rc
);
442 rc
= of_property_read_string_index(np
, "unterminated-string", 0, strings
);
443 unittest(rc
== -EILSEQ
&& strings
[0] == NULL
, "of_property_read_string_index() failure; rc=%i\n", rc
);
444 rc
= of_property_read_string_index(np
, "unterminated-string-list", 0, strings
);
445 unittest(rc
== 0 && !strcmp(strings
[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc
);
447 rc
= of_property_read_string_index(np
, "unterminated-string-list", 2, strings
); /* should fail */
448 unittest(rc
== -EILSEQ
&& strings
[0] == NULL
, "of_property_read_string_index() failure; rc=%i\n", rc
);
451 /* of_property_read_string_array() tests */
452 rc
= of_property_read_string_array(np
, "string-property", strings
, 4);
453 unittest(rc
== 1, "Incorrect string count; rc=%i\n", rc
);
454 rc
= of_property_read_string_array(np
, "phandle-list-names", strings
, 4);
455 unittest(rc
== 3, "Incorrect string count; rc=%i\n", rc
);
456 rc
= of_property_read_string_array(np
, "unterminated-string", strings
, 4);
457 unittest(rc
== -EILSEQ
, "unterminated string; rc=%i\n", rc
);
458 /* -- An incorrectly formed string should cause a failure */
459 rc
= of_property_read_string_array(np
, "unterminated-string-list", strings
, 4);
460 unittest(rc
== -EILSEQ
, "unterminated string array; rc=%i\n", rc
);
461 /* -- parsing the correctly formed strings should still work: */
463 rc
= of_property_read_string_array(np
, "unterminated-string-list", strings
, 2);
464 unittest(rc
== 2 && strings
[2] == NULL
, "of_property_read_string_array() failure; rc=%i\n", rc
);
466 rc
= of_property_read_string_array(np
, "phandle-list-names", strings
, 1);
467 unittest(rc
== 1 && strings
[1] == NULL
, "Overwrote end of string array; rc=%i, str='%s'\n", rc
, strings
[1]);
470 #define propcmp(p1, p2) (((p1)->length == (p2)->length) && \
471 (p1)->value && (p2)->value && \
472 !memcmp((p1)->value, (p2)->value, (p1)->length) && \
473 !strcmp((p1)->name, (p2)->name))
474 static void __init
of_unittest_property_copy(void)
476 #ifdef CONFIG_OF_DYNAMIC
477 struct property p1
= { .name
= "p1", .length
= 0, .value
= "" };
478 struct property p2
= { .name
= "p2", .length
= 5, .value
= "abcd" };
479 struct property
*new;
481 new = __of_prop_dup(&p1
, GFP_KERNEL
);
482 unittest(new && propcmp(&p1
, new), "empty property didn't copy correctly\n");
487 new = __of_prop_dup(&p2
, GFP_KERNEL
);
488 unittest(new && propcmp(&p2
, new), "non-empty property didn't copy correctly\n");
495 static void __init
of_unittest_changeset(void)
497 #ifdef CONFIG_OF_DYNAMIC
498 struct property
*ppadd
, padd
= { .name
= "prop-add", .length
= 0, .value
= "" };
499 struct property
*ppupdate
, pupdate
= { .name
= "prop-update", .length
= 5, .value
= "abcd" };
500 struct property
*ppremove
;
501 struct device_node
*n1
, *n2
, *n21
, *nremove
, *parent
, *np
;
502 struct of_changeset chgset
;
504 n1
= __of_node_dup(NULL
, "/testcase-data/changeset/n1");
505 unittest(n1
, "testcase setup failure\n");
506 n2
= __of_node_dup(NULL
, "/testcase-data/changeset/n2");
507 unittest(n2
, "testcase setup failure\n");
508 n21
= __of_node_dup(NULL
, "%s/%s", "/testcase-data/changeset/n2", "n21");
509 unittest(n21
, "testcase setup failure %p\n", n21
);
510 nremove
= of_find_node_by_path("/testcase-data/changeset/node-remove");
511 unittest(nremove
, "testcase setup failure\n");
512 ppadd
= __of_prop_dup(&padd
, GFP_KERNEL
);
513 unittest(ppadd
, "testcase setup failure\n");
514 ppupdate
= __of_prop_dup(&pupdate
, GFP_KERNEL
);
515 unittest(ppupdate
, "testcase setup failure\n");
516 parent
= nremove
->parent
;
521 ppremove
= of_find_property(parent
, "prop-remove", NULL
);
522 unittest(ppremove
, "failed to find removal prop");
524 of_changeset_init(&chgset
);
525 unittest(!of_changeset_attach_node(&chgset
, n1
), "fail attach n1\n");
526 unittest(!of_changeset_attach_node(&chgset
, n2
), "fail attach n2\n");
527 unittest(!of_changeset_detach_node(&chgset
, nremove
), "fail remove node\n");
528 unittest(!of_changeset_attach_node(&chgset
, n21
), "fail attach n21\n");
529 unittest(!of_changeset_add_property(&chgset
, parent
, ppadd
), "fail add prop\n");
530 unittest(!of_changeset_update_property(&chgset
, parent
, ppupdate
), "fail update prop\n");
531 unittest(!of_changeset_remove_property(&chgset
, parent
, ppremove
), "fail remove prop\n");
532 unittest(!of_changeset_apply(&chgset
), "apply failed\n");
534 /* Make sure node names are constructed correctly */
535 unittest((np
= of_find_node_by_path("/testcase-data/changeset/n2/n21")),
536 "'%s' not added\n", n21
->full_name
);
539 unittest(!of_changeset_revert(&chgset
), "revert failed\n");
541 of_changeset_destroy(&chgset
);
545 static void __init
of_unittest_parse_interrupts(void)
547 struct device_node
*np
;
548 struct of_phandle_args args
;
551 np
= of_find_node_by_path("/testcase-data/interrupts/interrupts0");
553 pr_err("missing testcase data\n");
557 for (i
= 0; i
< 4; i
++) {
561 rc
= of_irq_parse_one(np
, i
, &args
);
564 passed
&= (args
.args_count
== 1);
565 passed
&= (args
.args
[0] == (i
+ 1));
567 unittest(passed
, "index %i - data error on node %s rc=%i\n",
568 i
, args
.np
->full_name
, rc
);
572 np
= of_find_node_by_path("/testcase-data/interrupts/interrupts1");
574 pr_err("missing testcase data\n");
578 for (i
= 0; i
< 4; i
++) {
582 rc
= of_irq_parse_one(np
, i
, &args
);
584 /* Test the values from tests-phandle.dtsi */
588 passed
&= (args
.args_count
== 1);
589 passed
&= (args
.args
[0] == 9);
593 passed
&= (args
.args_count
== 3);
594 passed
&= (args
.args
[0] == 10);
595 passed
&= (args
.args
[1] == 11);
596 passed
&= (args
.args
[2] == 12);
600 passed
&= (args
.args_count
== 2);
601 passed
&= (args
.args
[0] == 13);
602 passed
&= (args
.args
[1] == 14);
606 passed
&= (args
.args_count
== 2);
607 passed
&= (args
.args
[0] == 15);
608 passed
&= (args
.args
[1] == 16);
613 unittest(passed
, "index %i - data error on node %s rc=%i\n",
614 i
, args
.np
->full_name
, rc
);
619 static void __init
of_unittest_parse_interrupts_extended(void)
621 struct device_node
*np
;
622 struct of_phandle_args args
;
625 np
= of_find_node_by_path("/testcase-data/interrupts/interrupts-extended0");
627 pr_err("missing testcase data\n");
631 for (i
= 0; i
< 7; i
++) {
634 rc
= of_irq_parse_one(np
, i
, &args
);
636 /* Test the values from tests-phandle.dtsi */
640 passed
&= (args
.args_count
== 1);
641 passed
&= (args
.args
[0] == 1);
645 passed
&= (args
.args_count
== 3);
646 passed
&= (args
.args
[0] == 2);
647 passed
&= (args
.args
[1] == 3);
648 passed
&= (args
.args
[2] == 4);
652 passed
&= (args
.args_count
== 2);
653 passed
&= (args
.args
[0] == 5);
654 passed
&= (args
.args
[1] == 6);
658 passed
&= (args
.args_count
== 1);
659 passed
&= (args
.args
[0] == 9);
663 passed
&= (args
.args_count
== 3);
664 passed
&= (args
.args
[0] == 10);
665 passed
&= (args
.args
[1] == 11);
666 passed
&= (args
.args
[2] == 12);
670 passed
&= (args
.args_count
== 2);
671 passed
&= (args
.args
[0] == 13);
672 passed
&= (args
.args
[1] == 14);
676 passed
&= (args
.args_count
== 1);
677 passed
&= (args
.args
[0] == 15);
683 unittest(passed
, "index %i - data error on node %s rc=%i\n",
684 i
, args
.np
->full_name
, rc
);
689 static const struct of_device_id match_node_table
[] = {
690 { .data
= "A", .name
= "name0", }, /* Name alone is lowest priority */
691 { .data
= "B", .type
= "type1", }, /* followed by type alone */
693 { .data
= "Ca", .name
= "name2", .type
= "type1", }, /* followed by both together */
694 { .data
= "Cb", .name
= "name2", }, /* Only match when type doesn't match */
695 { .data
= "Cc", .name
= "name2", .type
= "type2", },
697 { .data
= "E", .compatible
= "compat3" },
698 { .data
= "G", .compatible
= "compat2", },
699 { .data
= "H", .compatible
= "compat2", .name
= "name5", },
700 { .data
= "I", .compatible
= "compat2", .type
= "type1", },
701 { .data
= "J", .compatible
= "compat2", .type
= "type1", .name
= "name8", },
702 { .data
= "K", .compatible
= "compat2", .name
= "name9", },
709 } match_node_tests
[] = {
710 { .path
= "/testcase-data/match-node/name0", .data
= "A", },
711 { .path
= "/testcase-data/match-node/name1", .data
= "B", },
712 { .path
= "/testcase-data/match-node/a/name2", .data
= "Ca", },
713 { .path
= "/testcase-data/match-node/b/name2", .data
= "Cb", },
714 { .path
= "/testcase-data/match-node/c/name2", .data
= "Cc", },
715 { .path
= "/testcase-data/match-node/name3", .data
= "E", },
716 { .path
= "/testcase-data/match-node/name4", .data
= "G", },
717 { .path
= "/testcase-data/match-node/name5", .data
= "H", },
718 { .path
= "/testcase-data/match-node/name6", .data
= "G", },
719 { .path
= "/testcase-data/match-node/name7", .data
= "I", },
720 { .path
= "/testcase-data/match-node/name8", .data
= "J", },
721 { .path
= "/testcase-data/match-node/name9", .data
= "K", },
724 static void __init
of_unittest_match_node(void)
726 struct device_node
*np
;
727 const struct of_device_id
*match
;
730 for (i
= 0; i
< ARRAY_SIZE(match_node_tests
); i
++) {
731 np
= of_find_node_by_path(match_node_tests
[i
].path
);
733 unittest(0, "missing testcase node %s\n",
734 match_node_tests
[i
].path
);
738 match
= of_match_node(match_node_table
, np
);
740 unittest(0, "%s didn't match anything\n",
741 match_node_tests
[i
].path
);
745 if (strcmp(match
->data
, match_node_tests
[i
].data
) != 0) {
746 unittest(0, "%s got wrong match. expected %s, got %s\n",
747 match_node_tests
[i
].path
, match_node_tests
[i
].data
,
748 (const char *)match
->data
);
751 unittest(1, "passed");
755 static struct resource test_bus_res
= {
758 .flags
= IORESOURCE_MEM
,
760 static const struct platform_device_info test_bus_info
= {
761 .name
= "unittest-bus",
763 static void __init
of_unittest_platform_populate(void)
766 struct device_node
*np
, *child
, *grandchild
;
767 struct platform_device
*pdev
, *test_bus
;
768 const struct of_device_id match
[] = {
769 { .compatible
= "test-device", },
773 np
= of_find_node_by_path("/testcase-data");
774 of_platform_populate(np
, of_default_bus_match_table
, NULL
, NULL
);
776 /* Test that a missing irq domain returns -EPROBE_DEFER */
777 np
= of_find_node_by_path("/testcase-data/testcase-device1");
778 pdev
= of_find_device_by_node(np
);
779 unittest(pdev
, "device 1 creation failed\n");
781 irq
= platform_get_irq(pdev
, 0);
782 unittest(irq
== -EPROBE_DEFER
, "device deferred probe failed - %d\n", irq
);
784 /* Test that a parsing failure does not return -EPROBE_DEFER */
785 np
= of_find_node_by_path("/testcase-data/testcase-device2");
786 pdev
= of_find_device_by_node(np
);
787 unittest(pdev
, "device 2 creation failed\n");
788 irq
= platform_get_irq(pdev
, 0);
789 unittest(irq
< 0 && irq
!= -EPROBE_DEFER
, "device parsing error failed - %d\n", irq
);
791 np
= of_find_node_by_path("/testcase-data/platform-tests");
792 unittest(np
, "No testcase data in device tree\n");
796 test_bus
= platform_device_register_full(&test_bus_info
);
797 rc
= PTR_ERR_OR_ZERO(test_bus
);
798 unittest(!rc
, "testbus registration failed; rc=%i\n", rc
);
801 test_bus
->dev
.of_node
= np
;
804 * Add a dummy resource to the test bus node after it is
805 * registered to catch problems with un-inserted resources. The
806 * DT code doesn't insert the resources, and it has caused the
807 * kernel to oops in the past. This makes sure the same bug
808 * doesn't crop up again.
810 platform_device_add_resources(test_bus
, &test_bus_res
, 1);
812 of_platform_populate(np
, match
, NULL
, &test_bus
->dev
);
813 for_each_child_of_node(np
, child
) {
814 for_each_child_of_node(child
, grandchild
)
815 unittest(of_find_device_by_node(grandchild
),
816 "Could not create device for node '%s'\n",
820 of_platform_depopulate(&test_bus
->dev
);
821 for_each_child_of_node(np
, child
) {
822 for_each_child_of_node(child
, grandchild
)
823 unittest(!of_find_device_by_node(grandchild
),
824 "device didn't get destroyed '%s'\n",
828 platform_device_unregister(test_bus
);
833 * update_node_properties - adds the properties
834 * of np into dup node (present in live tree) and
835 * updates parent of children of np to dup.
837 * @np: node already present in live tree
838 * @dup: node present in live tree to be updated
840 static void update_node_properties(struct device_node
*np
,
841 struct device_node
*dup
)
843 struct property
*prop
;
844 struct device_node
*child
;
846 for_each_property_of_node(np
, prop
)
847 of_add_property(dup
, prop
);
849 for_each_child_of_node(np
, child
)
854 * attach_node_and_children - attaches nodes
855 * and its children to live tree
857 * @np: Node to attach to live tree
859 static int attach_node_and_children(struct device_node
*np
)
861 struct device_node
*next
, *dup
, *child
;
864 dup
= of_find_node_by_path(np
->full_name
);
866 update_node_properties(np
, dup
);
873 mutex_lock(&of_mutex
);
874 raw_spin_lock_irqsave(&devtree_lock
, flags
);
875 np
->sibling
= np
->parent
->child
;
876 np
->parent
->child
= np
;
877 of_node_clear_flag(np
, OF_DETACHED
);
878 raw_spin_unlock_irqrestore(&devtree_lock
, flags
);
880 __of_attach_node_sysfs(np
);
881 mutex_unlock(&of_mutex
);
884 next
= child
->sibling
;
885 attach_node_and_children(child
);
893 * unittest_data_add - Reads, copies data from
894 * linked tree and attaches it to the live tree
896 static int __init
unittest_data_add(void)
899 struct device_node
*unittest_data_node
, *np
;
901 * __dtb_testcases_begin[] and __dtb_testcases_end[] are magically
902 * created by cmd_dt_S_dtb in scripts/Makefile.lib
904 extern uint8_t __dtb_testcases_begin
[];
905 extern uint8_t __dtb_testcases_end
[];
906 const int size
= __dtb_testcases_end
- __dtb_testcases_begin
;
910 pr_warn("%s: No testcase data to attach; not running tests\n",
916 unittest_data
= kmemdup(__dtb_testcases_begin
, size
, GFP_KERNEL
);
918 if (!unittest_data
) {
919 pr_warn("%s: Failed to allocate memory for unittest_data; "
920 "not running tests\n", __func__
);
923 of_fdt_unflatten_tree(unittest_data
, NULL
, &unittest_data_node
);
924 if (!unittest_data_node
) {
925 pr_warn("%s: No tree to attach; not running tests\n", __func__
);
928 of_node_set_flag(unittest_data_node
, OF_DETACHED
);
929 rc
= of_resolve_phandles(unittest_data_node
);
931 pr_err("%s: Failed to resolve phandles (rc=%i)\n", __func__
, rc
);
936 of_root
= unittest_data_node
;
937 for_each_of_allnodes(np
)
938 __of_attach_node_sysfs(np
);
939 of_aliases
= of_find_node_by_path("/aliases");
940 of_chosen
= of_find_node_by_path("/chosen");
944 /* attach the sub-tree to live tree */
945 np
= unittest_data_node
->child
;
947 struct device_node
*next
= np
->sibling
;
949 np
->parent
= of_root
;
950 attach_node_and_children(np
);
956 #ifdef CONFIG_OF_OVERLAY
958 static int unittest_probe(struct platform_device
*pdev
)
960 struct device
*dev
= &pdev
->dev
;
961 struct device_node
*np
= dev
->of_node
;
964 dev_err(dev
, "No OF data for device\n");
969 dev_dbg(dev
, "%s for node @%s\n", __func__
, np
->full_name
);
971 of_platform_populate(np
, NULL
, NULL
, &pdev
->dev
);
976 static int unittest_remove(struct platform_device
*pdev
)
978 struct device
*dev
= &pdev
->dev
;
979 struct device_node
*np
= dev
->of_node
;
981 dev_dbg(dev
, "%s for node @%s\n", __func__
, np
->full_name
);
985 static const struct of_device_id unittest_match
[] = {
986 { .compatible
= "unittest", },
990 static struct platform_driver unittest_driver
= {
991 .probe
= unittest_probe
,
992 .remove
= unittest_remove
,
995 .of_match_table
= of_match_ptr(unittest_match
),
999 /* get the platform device instantiated at the path */
1000 static struct platform_device
*of_path_to_platform_device(const char *path
)
1002 struct device_node
*np
;
1003 struct platform_device
*pdev
;
1005 np
= of_find_node_by_path(path
);
1009 pdev
= of_find_device_by_node(np
);
1015 /* find out if a platform device exists at that path */
1016 static int of_path_platform_device_exists(const char *path
)
1018 struct platform_device
*pdev
;
1020 pdev
= of_path_to_platform_device(path
);
1021 platform_device_put(pdev
);
1022 return pdev
!= NULL
;
1025 #if IS_BUILTIN(CONFIG_I2C)
1027 /* get the i2c client device instantiated at the path */
1028 static struct i2c_client
*of_path_to_i2c_client(const char *path
)
1030 struct device_node
*np
;
1031 struct i2c_client
*client
;
1033 np
= of_find_node_by_path(path
);
1037 client
= of_find_i2c_device_by_node(np
);
1043 /* find out if a i2c client device exists at that path */
1044 static int of_path_i2c_client_exists(const char *path
)
1046 struct i2c_client
*client
;
1048 client
= of_path_to_i2c_client(path
);
1050 put_device(&client
->dev
);
1051 return client
!= NULL
;
1054 static int of_path_i2c_client_exists(const char *path
)
1065 static int of_path_device_type_exists(const char *path
,
1066 enum overlay_type ovtype
)
1070 return of_path_platform_device_exists(path
);
1072 return of_path_i2c_client_exists(path
);
1077 static const char *unittest_path(int nr
, enum overlay_type ovtype
)
1080 static char buf
[256];
1084 base
= "/testcase-data/overlay-node/test-bus";
1087 base
= "/testcase-data/overlay-node/test-bus/i2c-test-bus";
1093 snprintf(buf
, sizeof(buf
) - 1, "%s/test-unittest%d", base
, nr
);
1094 buf
[sizeof(buf
) - 1] = '\0';
1098 static int of_unittest_device_exists(int unittest_nr
, enum overlay_type ovtype
)
1102 path
= unittest_path(unittest_nr
, ovtype
);
1106 return of_path_platform_device_exists(path
);
1108 return of_path_i2c_client_exists(path
);
1113 static const char *overlay_path(int nr
)
1115 static char buf
[256];
1117 snprintf(buf
, sizeof(buf
) - 1,
1118 "/testcase-data/overlay%d", nr
);
1119 buf
[sizeof(buf
) - 1] = '\0';
1124 static const char *bus_path
= "/testcase-data/overlay-node/test-bus";
1126 /* it is guaranteed that overlay ids are assigned in sequence */
1127 #define MAX_UNITTEST_OVERLAYS 256
1128 static unsigned long overlay_id_bits
[BITS_TO_LONGS(MAX_UNITTEST_OVERLAYS
)];
1129 static int overlay_first_id
= -1;
1131 static void of_unittest_track_overlay(int id
)
1133 if (overlay_first_id
< 0)
1134 overlay_first_id
= id
;
1135 id
-= overlay_first_id
;
1137 /* we shouldn't need that many */
1138 BUG_ON(id
>= MAX_UNITTEST_OVERLAYS
);
1139 overlay_id_bits
[BIT_WORD(id
)] |= BIT_MASK(id
);
1142 static void of_unittest_untrack_overlay(int id
)
1144 if (overlay_first_id
< 0)
1146 id
-= overlay_first_id
;
1147 BUG_ON(id
>= MAX_UNITTEST_OVERLAYS
);
1148 overlay_id_bits
[BIT_WORD(id
)] &= ~BIT_MASK(id
);
1151 static void of_unittest_destroy_tracked_overlays(void)
1153 int id
, ret
, defers
;
1155 if (overlay_first_id
< 0)
1158 /* try until no defers */
1161 /* remove in reverse order */
1162 for (id
= MAX_UNITTEST_OVERLAYS
- 1; id
>= 0; id
--) {
1163 if (!(overlay_id_bits
[BIT_WORD(id
)] & BIT_MASK(id
)))
1166 ret
= of_overlay_destroy(id
+ overlay_first_id
);
1167 if (ret
== -ENODEV
) {
1168 pr_warn("%s: no overlay to destroy for #%d\n",
1169 __func__
, id
+ overlay_first_id
);
1174 pr_warn("%s: overlay destroy failed for #%d\n",
1175 __func__
, id
+ overlay_first_id
);
1179 overlay_id_bits
[BIT_WORD(id
)] &= ~BIT_MASK(id
);
1181 } while (defers
> 0);
1184 static int of_unittest_apply_overlay(int unittest_nr
, int overlay_nr
,
1187 struct device_node
*np
= NULL
;
1190 np
= of_find_node_by_path(overlay_path(overlay_nr
));
1192 unittest(0, "could not find overlay node @\"%s\"\n",
1193 overlay_path(overlay_nr
));
1198 ret
= of_overlay_create(np
);
1200 unittest(0, "could not create overlay from \"%s\"\n",
1201 overlay_path(overlay_nr
));
1205 of_unittest_track_overlay(id
);
1218 /* apply an overlay while checking before and after states */
1219 static int of_unittest_apply_overlay_check(int overlay_nr
, int unittest_nr
,
1220 int before
, int after
, enum overlay_type ovtype
)
1224 /* unittest device must not be in before state */
1225 if (of_unittest_device_exists(unittest_nr
, ovtype
) != before
) {
1226 unittest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
1227 overlay_path(overlay_nr
),
1228 unittest_path(unittest_nr
, ovtype
),
1229 !before
? "enabled" : "disabled");
1233 ret
= of_unittest_apply_overlay(overlay_nr
, unittest_nr
, NULL
);
1235 /* of_unittest_apply_overlay already called unittest() */
1239 /* unittest device must be to set to after state */
1240 if (of_unittest_device_exists(unittest_nr
, ovtype
) != after
) {
1241 unittest(0, "overlay @\"%s\" failed to create @\"%s\" %s\n",
1242 overlay_path(overlay_nr
),
1243 unittest_path(unittest_nr
, ovtype
),
1244 !after
? "enabled" : "disabled");
1251 /* apply an overlay and then revert it while checking before, after states */
1252 static int of_unittest_apply_revert_overlay_check(int overlay_nr
,
1253 int unittest_nr
, int before
, int after
,
1254 enum overlay_type ovtype
)
1258 /* unittest device must be in before state */
1259 if (of_unittest_device_exists(unittest_nr
, ovtype
) != before
) {
1260 unittest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
1261 overlay_path(overlay_nr
),
1262 unittest_path(unittest_nr
, ovtype
),
1263 !before
? "enabled" : "disabled");
1267 /* apply the overlay */
1268 ret
= of_unittest_apply_overlay(overlay_nr
, unittest_nr
, &ov_id
);
1270 /* of_unittest_apply_overlay already called unittest() */
1274 /* unittest device must be in after state */
1275 if (of_unittest_device_exists(unittest_nr
, ovtype
) != after
) {
1276 unittest(0, "overlay @\"%s\" failed to create @\"%s\" %s\n",
1277 overlay_path(overlay_nr
),
1278 unittest_path(unittest_nr
, ovtype
),
1279 !after
? "enabled" : "disabled");
1283 ret
= of_overlay_destroy(ov_id
);
1285 unittest(0, "overlay @\"%s\" failed to be destroyed @\"%s\"\n",
1286 overlay_path(overlay_nr
),
1287 unittest_path(unittest_nr
, ovtype
));
1291 /* unittest device must be again in before state */
1292 if (of_unittest_device_exists(unittest_nr
, PDEV_OVERLAY
) != before
) {
1293 unittest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
1294 overlay_path(overlay_nr
),
1295 unittest_path(unittest_nr
, ovtype
),
1296 !before
? "enabled" : "disabled");
1303 /* test activation of device */
1304 static void of_unittest_overlay_0(void)
1308 /* device should enable */
1309 ret
= of_unittest_apply_overlay_check(0, 0, 0, 1, PDEV_OVERLAY
);
1313 unittest(1, "overlay test %d passed\n", 0);
1316 /* test deactivation of device */
1317 static void of_unittest_overlay_1(void)
1321 /* device should disable */
1322 ret
= of_unittest_apply_overlay_check(1, 1, 1, 0, PDEV_OVERLAY
);
1326 unittest(1, "overlay test %d passed\n", 1);
1329 /* test activation of device */
1330 static void of_unittest_overlay_2(void)
1334 /* device should enable */
1335 ret
= of_unittest_apply_overlay_check(2, 2, 0, 1, PDEV_OVERLAY
);
1339 unittest(1, "overlay test %d passed\n", 2);
1342 /* test deactivation of device */
1343 static void of_unittest_overlay_3(void)
1347 /* device should disable */
1348 ret
= of_unittest_apply_overlay_check(3, 3, 1, 0, PDEV_OVERLAY
);
1352 unittest(1, "overlay test %d passed\n", 3);
1355 /* test activation of a full device node */
1356 static void of_unittest_overlay_4(void)
1360 /* device should disable */
1361 ret
= of_unittest_apply_overlay_check(4, 4, 0, 1, PDEV_OVERLAY
);
1365 unittest(1, "overlay test %d passed\n", 4);
1368 /* test overlay apply/revert sequence */
1369 static void of_unittest_overlay_5(void)
1373 /* device should disable */
1374 ret
= of_unittest_apply_revert_overlay_check(5, 5, 0, 1, PDEV_OVERLAY
);
1378 unittest(1, "overlay test %d passed\n", 5);
1381 /* test overlay application in sequence */
1382 static void of_unittest_overlay_6(void)
1384 struct device_node
*np
;
1385 int ret
, i
, ov_id
[2];
1386 int overlay_nr
= 6, unittest_nr
= 6;
1387 int before
= 0, after
= 1;
1389 /* unittest device must be in before state */
1390 for (i
= 0; i
< 2; i
++) {
1391 if (of_unittest_device_exists(unittest_nr
+ i
, PDEV_OVERLAY
)
1393 unittest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
1394 overlay_path(overlay_nr
+ i
),
1395 unittest_path(unittest_nr
+ i
,
1397 !before
? "enabled" : "disabled");
1402 /* apply the overlays */
1403 for (i
= 0; i
< 2; i
++) {
1405 np
= of_find_node_by_path(overlay_path(overlay_nr
+ i
));
1407 unittest(0, "could not find overlay node @\"%s\"\n",
1408 overlay_path(overlay_nr
+ i
));
1412 ret
= of_overlay_create(np
);
1414 unittest(0, "could not create overlay from \"%s\"\n",
1415 overlay_path(overlay_nr
+ i
));
1419 of_unittest_track_overlay(ov_id
[i
]);
1422 for (i
= 0; i
< 2; i
++) {
1423 /* unittest device must be in after state */
1424 if (of_unittest_device_exists(unittest_nr
+ i
, PDEV_OVERLAY
)
1426 unittest(0, "overlay @\"%s\" failed @\"%s\" %s\n",
1427 overlay_path(overlay_nr
+ i
),
1428 unittest_path(unittest_nr
+ i
,
1430 !after
? "enabled" : "disabled");
1435 for (i
= 1; i
>= 0; i
--) {
1436 ret
= of_overlay_destroy(ov_id
[i
]);
1438 unittest(0, "overlay @\"%s\" failed destroy @\"%s\"\n",
1439 overlay_path(overlay_nr
+ i
),
1440 unittest_path(unittest_nr
+ i
,
1444 of_unittest_untrack_overlay(ov_id
[i
]);
1447 for (i
= 0; i
< 2; i
++) {
1448 /* unittest device must be again in before state */
1449 if (of_unittest_device_exists(unittest_nr
+ i
, PDEV_OVERLAY
)
1451 unittest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
1452 overlay_path(overlay_nr
+ i
),
1453 unittest_path(unittest_nr
+ i
,
1455 !before
? "enabled" : "disabled");
1460 unittest(1, "overlay test %d passed\n", 6);
1463 /* test overlay application in sequence */
1464 static void of_unittest_overlay_8(void)
1466 struct device_node
*np
;
1467 int ret
, i
, ov_id
[2];
1468 int overlay_nr
= 8, unittest_nr
= 8;
1470 /* we don't care about device state in this test */
1472 /* apply the overlays */
1473 for (i
= 0; i
< 2; i
++) {
1475 np
= of_find_node_by_path(overlay_path(overlay_nr
+ i
));
1477 unittest(0, "could not find overlay node @\"%s\"\n",
1478 overlay_path(overlay_nr
+ i
));
1482 ret
= of_overlay_create(np
);
1484 unittest(0, "could not create overlay from \"%s\"\n",
1485 overlay_path(overlay_nr
+ i
));
1489 of_unittest_track_overlay(ov_id
[i
]);
1492 /* now try to remove first overlay (it should fail) */
1493 ret
= of_overlay_destroy(ov_id
[0]);
1495 unittest(0, "overlay @\"%s\" was destroyed @\"%s\"\n",
1496 overlay_path(overlay_nr
+ 0),
1497 unittest_path(unittest_nr
,
1502 /* removing them in order should work */
1503 for (i
= 1; i
>= 0; i
--) {
1504 ret
= of_overlay_destroy(ov_id
[i
]);
1506 unittest(0, "overlay @\"%s\" not destroyed @\"%s\"\n",
1507 overlay_path(overlay_nr
+ i
),
1508 unittest_path(unittest_nr
,
1512 of_unittest_untrack_overlay(ov_id
[i
]);
1515 unittest(1, "overlay test %d passed\n", 8);
1518 /* test insertion of a bus with parent devices */
1519 static void of_unittest_overlay_10(void)
1524 /* device should disable */
1525 ret
= of_unittest_apply_overlay_check(10, 10, 0, 1, PDEV_OVERLAY
);
1526 if (unittest(ret
== 0,
1527 "overlay test %d failed; overlay application\n", 10))
1530 child_path
= kasprintf(GFP_KERNEL
, "%s/test-unittest101",
1531 unittest_path(10, PDEV_OVERLAY
));
1532 if (unittest(child_path
, "overlay test %d failed; kasprintf\n", 10))
1535 ret
= of_path_device_type_exists(child_path
, PDEV_OVERLAY
);
1537 if (unittest(ret
, "overlay test %d failed; no child device\n", 10))
1541 /* test insertion of a bus with parent devices (and revert) */
1542 static void of_unittest_overlay_11(void)
1546 /* device should disable */
1547 ret
= of_unittest_apply_revert_overlay_check(11, 11, 0, 1,
1549 if (unittest(ret
== 0,
1550 "overlay test %d failed; overlay application\n", 11))
1554 #if IS_BUILTIN(CONFIG_I2C) && IS_ENABLED(CONFIG_OF_OVERLAY)
1556 struct unittest_i2c_bus_data
{
1557 struct platform_device
*pdev
;
1558 struct i2c_adapter adap
;
1561 static int unittest_i2c_master_xfer(struct i2c_adapter
*adap
,
1562 struct i2c_msg
*msgs
, int num
)
1564 struct unittest_i2c_bus_data
*std
= i2c_get_adapdata(adap
);
1571 static u32
unittest_i2c_functionality(struct i2c_adapter
*adap
)
1573 return I2C_FUNC_I2C
| I2C_FUNC_SMBUS_EMUL
;
1576 static const struct i2c_algorithm unittest_i2c_algo
= {
1577 .master_xfer
= unittest_i2c_master_xfer
,
1578 .functionality
= unittest_i2c_functionality
,
1581 static int unittest_i2c_bus_probe(struct platform_device
*pdev
)
1583 struct device
*dev
= &pdev
->dev
;
1584 struct device_node
*np
= dev
->of_node
;
1585 struct unittest_i2c_bus_data
*std
;
1586 struct i2c_adapter
*adap
;
1590 dev_err(dev
, "No OF data for device\n");
1595 dev_dbg(dev
, "%s for node @%s\n", __func__
, np
->full_name
);
1597 std
= devm_kzalloc(dev
, sizeof(*std
), GFP_KERNEL
);
1599 dev_err(dev
, "Failed to allocate unittest i2c data\n");
1603 /* link them together */
1605 platform_set_drvdata(pdev
, std
);
1608 i2c_set_adapdata(adap
, std
);
1610 strlcpy(adap
->name
, pdev
->name
, sizeof(adap
->name
));
1611 adap
->class = I2C_CLASS_DEPRECATED
;
1612 adap
->algo
= &unittest_i2c_algo
;
1613 adap
->dev
.parent
= dev
;
1614 adap
->dev
.of_node
= dev
->of_node
;
1615 adap
->timeout
= 5 * HZ
;
1618 ret
= i2c_add_numbered_adapter(adap
);
1620 dev_err(dev
, "Failed to add I2C adapter\n");
1627 static int unittest_i2c_bus_remove(struct platform_device
*pdev
)
1629 struct device
*dev
= &pdev
->dev
;
1630 struct device_node
*np
= dev
->of_node
;
1631 struct unittest_i2c_bus_data
*std
= platform_get_drvdata(pdev
);
1633 dev_dbg(dev
, "%s for node @%s\n", __func__
, np
->full_name
);
1634 i2c_del_adapter(&std
->adap
);
1639 static const struct of_device_id unittest_i2c_bus_match
[] = {
1640 { .compatible
= "unittest-i2c-bus", },
1644 static struct platform_driver unittest_i2c_bus_driver
= {
1645 .probe
= unittest_i2c_bus_probe
,
1646 .remove
= unittest_i2c_bus_remove
,
1648 .name
= "unittest-i2c-bus",
1649 .of_match_table
= of_match_ptr(unittest_i2c_bus_match
),
1653 static int unittest_i2c_dev_probe(struct i2c_client
*client
,
1654 const struct i2c_device_id
*id
)
1656 struct device
*dev
= &client
->dev
;
1657 struct device_node
*np
= client
->dev
.of_node
;
1660 dev_err(dev
, "No OF node\n");
1664 dev_dbg(dev
, "%s for node @%s\n", __func__
, np
->full_name
);
1669 static int unittest_i2c_dev_remove(struct i2c_client
*client
)
1671 struct device
*dev
= &client
->dev
;
1672 struct device_node
*np
= client
->dev
.of_node
;
1674 dev_dbg(dev
, "%s for node @%s\n", __func__
, np
->full_name
);
1678 static const struct i2c_device_id unittest_i2c_dev_id
[] = {
1679 { .name
= "unittest-i2c-dev" },
1683 static struct i2c_driver unittest_i2c_dev_driver
= {
1685 .name
= "unittest-i2c-dev",
1687 .probe
= unittest_i2c_dev_probe
,
1688 .remove
= unittest_i2c_dev_remove
,
1689 .id_table
= unittest_i2c_dev_id
,
1692 #if IS_BUILTIN(CONFIG_I2C_MUX)
1694 static int unittest_i2c_mux_select_chan(struct i2c_mux_core
*muxc
, u32 chan
)
1699 static int unittest_i2c_mux_probe(struct i2c_client
*client
,
1700 const struct i2c_device_id
*id
)
1703 struct device
*dev
= &client
->dev
;
1704 struct i2c_adapter
*adap
= to_i2c_adapter(dev
->parent
);
1705 struct device_node
*np
= client
->dev
.of_node
, *child
;
1706 struct i2c_mux_core
*muxc
;
1709 dev_dbg(dev
, "%s for node @%s\n", __func__
, np
->full_name
);
1712 dev_err(dev
, "No OF node\n");
1717 for_each_child_of_node(np
, child
) {
1718 ret
= of_property_read_u32(child
, "reg", ®
);
1721 if (max_reg
== (u32
)-1 || reg
> max_reg
)
1724 nchans
= max_reg
== (u32
)-1 ? 0 : max_reg
+ 1;
1726 dev_err(dev
, "No channels\n");
1730 muxc
= i2c_mux_alloc(adap
, dev
, nchans
, 0, 0,
1731 unittest_i2c_mux_select_chan
, NULL
);
1734 for (i
= 0; i
< nchans
; i
++) {
1735 ret
= i2c_mux_add_adapter(muxc
, 0, i
, 0);
1737 dev_err(dev
, "Failed to register mux #%d\n", i
);
1738 i2c_mux_del_adapters(muxc
);
1743 i2c_set_clientdata(client
, muxc
);
1748 static int unittest_i2c_mux_remove(struct i2c_client
*client
)
1750 struct device
*dev
= &client
->dev
;
1751 struct device_node
*np
= client
->dev
.of_node
;
1752 struct i2c_mux_core
*muxc
= i2c_get_clientdata(client
);
1754 dev_dbg(dev
, "%s for node @%s\n", __func__
, np
->full_name
);
1755 i2c_mux_del_adapters(muxc
);
1759 static const struct i2c_device_id unittest_i2c_mux_id
[] = {
1760 { .name
= "unittest-i2c-mux" },
1764 static struct i2c_driver unittest_i2c_mux_driver
= {
1766 .name
= "unittest-i2c-mux",
1768 .probe
= unittest_i2c_mux_probe
,
1769 .remove
= unittest_i2c_mux_remove
,
1770 .id_table
= unittest_i2c_mux_id
,
1775 static int of_unittest_overlay_i2c_init(void)
1779 ret
= i2c_add_driver(&unittest_i2c_dev_driver
);
1780 if (unittest(ret
== 0,
1781 "could not register unittest i2c device driver\n"))
1784 ret
= platform_driver_register(&unittest_i2c_bus_driver
);
1785 if (unittest(ret
== 0,
1786 "could not register unittest i2c bus driver\n"))
1789 #if IS_BUILTIN(CONFIG_I2C_MUX)
1790 ret
= i2c_add_driver(&unittest_i2c_mux_driver
);
1791 if (unittest(ret
== 0,
1792 "could not register unittest i2c mux driver\n"))
1799 static void of_unittest_overlay_i2c_cleanup(void)
1801 #if IS_BUILTIN(CONFIG_I2C_MUX)
1802 i2c_del_driver(&unittest_i2c_mux_driver
);
1804 platform_driver_unregister(&unittest_i2c_bus_driver
);
1805 i2c_del_driver(&unittest_i2c_dev_driver
);
1808 static void of_unittest_overlay_i2c_12(void)
1812 /* device should enable */
1813 ret
= of_unittest_apply_overlay_check(12, 12, 0, 1, I2C_OVERLAY
);
1817 unittest(1, "overlay test %d passed\n", 12);
1820 /* test deactivation of device */
1821 static void of_unittest_overlay_i2c_13(void)
1825 /* device should disable */
1826 ret
= of_unittest_apply_overlay_check(13, 13, 1, 0, I2C_OVERLAY
);
1830 unittest(1, "overlay test %d passed\n", 13);
1833 /* just check for i2c mux existence */
1834 static void of_unittest_overlay_i2c_14(void)
1838 static void of_unittest_overlay_i2c_15(void)
1842 /* device should enable */
1843 ret
= of_unittest_apply_overlay_check(16, 15, 0, 1, I2C_OVERLAY
);
1847 unittest(1, "overlay test %d passed\n", 15);
1852 static inline void of_unittest_overlay_i2c_14(void) { }
1853 static inline void of_unittest_overlay_i2c_15(void) { }
1857 static void __init
of_unittest_overlay(void)
1859 struct device_node
*bus_np
= NULL
;
1862 ret
= platform_driver_register(&unittest_driver
);
1864 unittest(0, "could not register unittest driver\n");
1868 bus_np
= of_find_node_by_path(bus_path
);
1869 if (bus_np
== NULL
) {
1870 unittest(0, "could not find bus_path \"%s\"\n", bus_path
);
1874 ret
= of_platform_populate(bus_np
, of_default_bus_match_table
,
1877 unittest(0, "could not populate bus @ \"%s\"\n", bus_path
);
1881 if (!of_unittest_device_exists(100, PDEV_OVERLAY
)) {
1882 unittest(0, "could not find unittest0 @ \"%s\"\n",
1883 unittest_path(100, PDEV_OVERLAY
));
1887 if (of_unittest_device_exists(101, PDEV_OVERLAY
)) {
1888 unittest(0, "unittest1 @ \"%s\" should not exist\n",
1889 unittest_path(101, PDEV_OVERLAY
));
1893 unittest(1, "basic infrastructure of overlays passed");
1895 /* tests in sequence */
1896 of_unittest_overlay_0();
1897 of_unittest_overlay_1();
1898 of_unittest_overlay_2();
1899 of_unittest_overlay_3();
1900 of_unittest_overlay_4();
1901 of_unittest_overlay_5();
1902 of_unittest_overlay_6();
1903 of_unittest_overlay_8();
1905 of_unittest_overlay_10();
1906 of_unittest_overlay_11();
1908 #if IS_BUILTIN(CONFIG_I2C)
1909 if (unittest(of_unittest_overlay_i2c_init() == 0, "i2c init failed\n"))
1912 of_unittest_overlay_i2c_12();
1913 of_unittest_overlay_i2c_13();
1914 of_unittest_overlay_i2c_14();
1915 of_unittest_overlay_i2c_15();
1917 of_unittest_overlay_i2c_cleanup();
1920 of_unittest_destroy_tracked_overlays();
1923 of_node_put(bus_np
);
1927 static inline void __init
of_unittest_overlay(void) { }
1930 static int __init
of_unittest(void)
1932 struct device_node
*np
;
1935 /* adding data for unittest */
1936 res
= unittest_data_add();
1940 of_aliases
= of_find_node_by_path("/aliases");
1942 np
= of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
1944 pr_info("No testcase data in device tree; not running tests\n");
1949 pr_info("start of unittest - you will see error messages\n");
1950 of_unittest_check_tree_linkage();
1951 of_unittest_check_phandles();
1952 of_unittest_find_node_by_name();
1953 of_unittest_dynamic();
1954 of_unittest_parse_phandle_with_args();
1955 of_unittest_property_string();
1956 of_unittest_property_copy();
1957 of_unittest_changeset();
1958 of_unittest_parse_interrupts();
1959 of_unittest_parse_interrupts_extended();
1960 of_unittest_match_node();
1961 of_unittest_platform_populate();
1962 of_unittest_overlay();
1964 /* Double check linkage after removing testcase data */
1965 of_unittest_check_tree_linkage();
1967 pr_info("end of unittest - %i passed, %i failed\n",
1968 unittest_results
.passed
, unittest_results
.failed
);
1972 late_initcall(of_unittest
);