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>
21 #include <linux/i2c.h>
22 #include <linux/i2c-mux.h>
24 #include <linux/bitops.h>
26 #include "of_private.h"
28 static struct unittest_results
{
33 #define unittest(result, fmt, ...) ({ \
34 bool failed = !(result); \
36 unittest_results.failed++; \
37 pr_err("FAIL %s():%i " fmt, __func__, __LINE__, ##__VA_ARGS__); \
39 unittest_results.passed++; \
40 pr_debug("pass %s():%i\n", __func__, __LINE__); \
45 static void __init
of_unittest_find_node_by_name(void)
47 struct device_node
*np
;
50 np
= of_find_node_by_path("/testcase-data");
51 unittest(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 unittest(!np
, "trailing '/' on /testcase-data/ should fail\n");
59 np
= of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
60 unittest(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 unittest(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 unittest(!np
, "trailing '/' on testcase-alias/ should fail\n");
73 np
= of_find_node_by_path("testcase-alias/phandle-tests/consumer-a");
74 unittest(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 unittest(!np
, "non-existent path returned node %s\n", np
->full_name
);
82 np
= of_find_node_by_path("missing-alias");
83 unittest(!np
, "non-existent alias returned node %s\n", np
->full_name
);
86 np
= of_find_node_by_path("testcase-alias/missing-path");
87 unittest(!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 unittest(np
&& !strcmp("testoption", options
),
92 "option path test failed\n");
95 np
= of_find_node_opts_by_path("/testcase-data:test/option", &options
);
96 unittest(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 unittest(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 unittest(np
, "NULL option path test failed\n");
109 np
= of_find_node_opts_by_path("testcase-alias:testaliasoption",
111 unittest(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 unittest(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 unittest(np
, "NULL option alias path test failed\n");
125 options
= "testoption";
126 np
= of_find_node_opts_by_path("testcase-alias", &options
);
127 unittest(np
&& !options
, "option clearing test failed\n");
130 options
= "testoption";
131 np
= of_find_node_opts_by_path("/", &options
);
132 unittest(np
&& !options
, "option clearing root node test failed\n");
136 static void __init
of_unittest_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 unittest(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 unittest(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 unittest(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 unittest(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 unittest(of_update_property(np
, prop
) == 0,
180 "Updating a missing property should have passed\n");
182 /* Remove property - should pass */
183 unittest(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 unittest(prop
->value
!= NULL
, "Unable to allocate large buffer\n");
193 unittest(of_add_property(np
, prop
) == 0,
194 "Adding a large property should have passed\n");
197 static int __init
of_unittest_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
);
210 rc
= of_unittest_check_node_linkage(child
);
222 static void __init
of_unittest_check_tree_linkage(void)
224 struct device_node
*np
;
225 int allnode_count
= 0, child_count
;
230 for_each_of_allnodes(np
)
232 child_count
= of_unittest_check_node_linkage(of_root
);
234 unittest(child_count
> 0, "Device node data structure is corrupted\n");
235 unittest(child_count
== allnode_count
,
236 "allnodes list size (%i) doesn't match sibling lists size (%i)\n",
237 allnode_count
, child_count
);
238 pr_debug("allnodes list size (%i); sibling lists size (%i)\n", allnode_count
, child_count
);
242 struct hlist_node node
;
243 struct device_node
*np
;
246 static DEFINE_HASHTABLE(phandle_ht
, 8);
247 static void __init
of_unittest_check_phandles(void)
249 struct device_node
*np
;
250 struct node_hash
*nh
;
251 struct hlist_node
*tmp
;
252 int i
, dup_count
= 0, phandle_count
= 0;
254 for_each_of_allnodes(np
) {
258 hash_for_each_possible(phandle_ht
, nh
, node
, np
->phandle
) {
259 if (nh
->np
->phandle
== np
->phandle
) {
260 pr_info("Duplicate phandle! %i used by %s and %s\n",
261 np
->phandle
, nh
->np
->full_name
, np
->full_name
);
267 nh
= kzalloc(sizeof(*nh
), GFP_KERNEL
);
272 hash_add(phandle_ht
, &nh
->node
, np
->phandle
);
275 unittest(dup_count
== 0, "Found %i duplicates in %i phandles\n",
276 dup_count
, phandle_count
);
279 hash_for_each_safe(phandle_ht
, i
, tmp
, nh
, node
) {
285 static void __init
of_unittest_parse_phandle_with_args(void)
287 struct device_node
*np
;
288 struct of_phandle_args args
;
291 np
= of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
293 pr_err("missing testcase data\n");
297 rc
= of_count_phandle_with_args(np
, "phandle-list", "#phandle-cells");
298 unittest(rc
== 7, "of_count_phandle_with_args() returned %i, expected 7\n", rc
);
300 for (i
= 0; i
< 8; i
++) {
303 rc
= of_parse_phandle_with_args(np
, "phandle-list",
304 "#phandle-cells", i
, &args
);
306 /* Test the values from tests-phandle.dtsi */
310 passed
&= (args
.args_count
== 1);
311 passed
&= (args
.args
[0] == (i
+ 1));
315 passed
&= (args
.args_count
== 2);
316 passed
&= (args
.args
[0] == (i
+ 1));
317 passed
&= (args
.args
[1] == 0);
320 passed
&= (rc
== -ENOENT
);
324 passed
&= (args
.args_count
== 3);
325 passed
&= (args
.args
[0] == (i
+ 1));
326 passed
&= (args
.args
[1] == 4);
327 passed
&= (args
.args
[2] == 3);
331 passed
&= (args
.args_count
== 2);
332 passed
&= (args
.args
[0] == (i
+ 1));
333 passed
&= (args
.args
[1] == 100);
337 passed
&= (args
.args_count
== 0);
341 passed
&= (args
.args_count
== 1);
342 passed
&= (args
.args
[0] == (i
+ 1));
345 passed
&= (rc
== -ENOENT
);
351 unittest(passed
, "index %i - data error on node %s rc=%i\n",
352 i
, args
.np
->full_name
, rc
);
355 /* Check for missing list property */
356 rc
= of_parse_phandle_with_args(np
, "phandle-list-missing",
357 "#phandle-cells", 0, &args
);
358 unittest(rc
== -ENOENT
, "expected:%i got:%i\n", -ENOENT
, rc
);
359 rc
= of_count_phandle_with_args(np
, "phandle-list-missing",
361 unittest(rc
== -ENOENT
, "expected:%i got:%i\n", -ENOENT
, rc
);
363 /* Check for missing cells property */
364 rc
= of_parse_phandle_with_args(np
, "phandle-list",
365 "#phandle-cells-missing", 0, &args
);
366 unittest(rc
== -EINVAL
, "expected:%i got:%i\n", -EINVAL
, rc
);
367 rc
= of_count_phandle_with_args(np
, "phandle-list",
368 "#phandle-cells-missing");
369 unittest(rc
== -EINVAL
, "expected:%i got:%i\n", -EINVAL
, rc
);
371 /* Check for bad phandle in list */
372 rc
= of_parse_phandle_with_args(np
, "phandle-list-bad-phandle",
373 "#phandle-cells", 0, &args
);
374 unittest(rc
== -EINVAL
, "expected:%i got:%i\n", -EINVAL
, rc
);
375 rc
= of_count_phandle_with_args(np
, "phandle-list-bad-phandle",
377 unittest(rc
== -EINVAL
, "expected:%i got:%i\n", -EINVAL
, rc
);
379 /* Check for incorrectly formed argument list */
380 rc
= of_parse_phandle_with_args(np
, "phandle-list-bad-args",
381 "#phandle-cells", 1, &args
);
382 unittest(rc
== -EINVAL
, "expected:%i got:%i\n", -EINVAL
, rc
);
383 rc
= of_count_phandle_with_args(np
, "phandle-list-bad-args",
385 unittest(rc
== -EINVAL
, "expected:%i got:%i\n", -EINVAL
, rc
);
388 static void __init
of_unittest_property_string(void)
390 const char *strings
[4];
391 struct device_node
*np
;
394 np
= of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
396 pr_err("No testcase data in device tree\n");
400 rc
= of_property_match_string(np
, "phandle-list-names", "first");
401 unittest(rc
== 0, "first expected:0 got:%i\n", rc
);
402 rc
= of_property_match_string(np
, "phandle-list-names", "second");
403 unittest(rc
== 1, "second expected:1 got:%i\n", rc
);
404 rc
= of_property_match_string(np
, "phandle-list-names", "third");
405 unittest(rc
== 2, "third expected:2 got:%i\n", rc
);
406 rc
= of_property_match_string(np
, "phandle-list-names", "fourth");
407 unittest(rc
== -ENODATA
, "unmatched string; rc=%i\n", rc
);
408 rc
= of_property_match_string(np
, "missing-property", "blah");
409 unittest(rc
== -EINVAL
, "missing property; rc=%i\n", rc
);
410 rc
= of_property_match_string(np
, "empty-property", "blah");
411 unittest(rc
== -ENODATA
, "empty property; rc=%i\n", rc
);
412 rc
= of_property_match_string(np
, "unterminated-string", "blah");
413 unittest(rc
== -EILSEQ
, "unterminated string; rc=%i\n", rc
);
415 /* of_property_count_strings() tests */
416 rc
= of_property_count_strings(np
, "string-property");
417 unittest(rc
== 1, "Incorrect string count; rc=%i\n", rc
);
418 rc
= of_property_count_strings(np
, "phandle-list-names");
419 unittest(rc
== 3, "Incorrect string count; rc=%i\n", rc
);
420 rc
= of_property_count_strings(np
, "unterminated-string");
421 unittest(rc
== -EILSEQ
, "unterminated string; rc=%i\n", rc
);
422 rc
= of_property_count_strings(np
, "unterminated-string-list");
423 unittest(rc
== -EILSEQ
, "unterminated string array; rc=%i\n", rc
);
425 /* of_property_read_string_index() tests */
426 rc
= of_property_read_string_index(np
, "string-property", 0, strings
);
427 unittest(rc
== 0 && !strcmp(strings
[0], "foobar"), "of_property_read_string_index() failure; rc=%i\n", rc
);
429 rc
= of_property_read_string_index(np
, "string-property", 1, strings
);
430 unittest(rc
== -ENODATA
&& strings
[0] == NULL
, "of_property_read_string_index() failure; rc=%i\n", rc
);
431 rc
= of_property_read_string_index(np
, "phandle-list-names", 0, strings
);
432 unittest(rc
== 0 && !strcmp(strings
[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc
);
433 rc
= of_property_read_string_index(np
, "phandle-list-names", 1, strings
);
434 unittest(rc
== 0 && !strcmp(strings
[0], "second"), "of_property_read_string_index() failure; rc=%i\n", rc
);
435 rc
= of_property_read_string_index(np
, "phandle-list-names", 2, strings
);
436 unittest(rc
== 0 && !strcmp(strings
[0], "third"), "of_property_read_string_index() failure; rc=%i\n", rc
);
438 rc
= of_property_read_string_index(np
, "phandle-list-names", 3, strings
);
439 unittest(rc
== -ENODATA
&& strings
[0] == NULL
, "of_property_read_string_index() failure; rc=%i\n", rc
);
441 rc
= of_property_read_string_index(np
, "unterminated-string", 0, strings
);
442 unittest(rc
== -EILSEQ
&& strings
[0] == NULL
, "of_property_read_string_index() failure; rc=%i\n", rc
);
443 rc
= of_property_read_string_index(np
, "unterminated-string-list", 0, strings
);
444 unittest(rc
== 0 && !strcmp(strings
[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc
);
446 rc
= of_property_read_string_index(np
, "unterminated-string-list", 2, strings
); /* should fail */
447 unittest(rc
== -EILSEQ
&& strings
[0] == NULL
, "of_property_read_string_index() failure; rc=%i\n", rc
);
450 /* of_property_read_string_array() tests */
451 rc
= of_property_read_string_array(np
, "string-property", strings
, 4);
452 unittest(rc
== 1, "Incorrect string count; rc=%i\n", rc
);
453 rc
= of_property_read_string_array(np
, "phandle-list-names", strings
, 4);
454 unittest(rc
== 3, "Incorrect string count; rc=%i\n", rc
);
455 rc
= of_property_read_string_array(np
, "unterminated-string", strings
, 4);
456 unittest(rc
== -EILSEQ
, "unterminated string; rc=%i\n", rc
);
457 /* -- An incorrectly formed string should cause a failure */
458 rc
= of_property_read_string_array(np
, "unterminated-string-list", strings
, 4);
459 unittest(rc
== -EILSEQ
, "unterminated string array; rc=%i\n", rc
);
460 /* -- parsing the correctly formed strings should still work: */
462 rc
= of_property_read_string_array(np
, "unterminated-string-list", strings
, 2);
463 unittest(rc
== 2 && strings
[2] == NULL
, "of_property_read_string_array() failure; rc=%i\n", rc
);
465 rc
= of_property_read_string_array(np
, "phandle-list-names", strings
, 1);
466 unittest(rc
== 1 && strings
[1] == NULL
, "Overwrote end of string array; rc=%i, str='%s'\n", rc
, strings
[1]);
469 #define propcmp(p1, p2) (((p1)->length == (p2)->length) && \
470 (p1)->value && (p2)->value && \
471 !memcmp((p1)->value, (p2)->value, (p1)->length) && \
472 !strcmp((p1)->name, (p2)->name))
473 static void __init
of_unittest_property_copy(void)
475 #ifdef CONFIG_OF_DYNAMIC
476 struct property p1
= { .name
= "p1", .length
= 0, .value
= "" };
477 struct property p2
= { .name
= "p2", .length
= 5, .value
= "abcd" };
478 struct property
*new;
480 new = __of_prop_dup(&p1
, GFP_KERNEL
);
481 unittest(new && propcmp(&p1
, new), "empty property didn't copy correctly\n");
486 new = __of_prop_dup(&p2
, GFP_KERNEL
);
487 unittest(new && propcmp(&p2
, new), "non-empty property didn't copy correctly\n");
494 static void __init
of_unittest_changeset(void)
496 #ifdef CONFIG_OF_DYNAMIC
497 struct property
*ppadd
, padd
= { .name
= "prop-add", .length
= 0, .value
= "" };
498 struct property
*ppupdate
, pupdate
= { .name
= "prop-update", .length
= 5, .value
= "abcd" };
499 struct property
*ppremove
;
500 struct device_node
*n1
, *n2
, *n21
, *nremove
, *parent
, *np
;
501 struct of_changeset chgset
;
503 n1
= __of_node_dup(NULL
, "/testcase-data/changeset/n1");
504 unittest(n1
, "testcase setup failure\n");
505 n2
= __of_node_dup(NULL
, "/testcase-data/changeset/n2");
506 unittest(n2
, "testcase setup failure\n");
507 n21
= __of_node_dup(NULL
, "%s/%s", "/testcase-data/changeset/n2", "n21");
508 unittest(n21
, "testcase setup failure %p\n", n21
);
509 nremove
= of_find_node_by_path("/testcase-data/changeset/node-remove");
510 unittest(nremove
, "testcase setup failure\n");
511 ppadd
= __of_prop_dup(&padd
, GFP_KERNEL
);
512 unittest(ppadd
, "testcase setup failure\n");
513 ppupdate
= __of_prop_dup(&pupdate
, GFP_KERNEL
);
514 unittest(ppupdate
, "testcase setup failure\n");
515 parent
= nremove
->parent
;
520 ppremove
= of_find_property(parent
, "prop-remove", NULL
);
521 unittest(ppremove
, "failed to find removal prop");
523 of_changeset_init(&chgset
);
524 unittest(!of_changeset_attach_node(&chgset
, n1
), "fail attach n1\n");
525 unittest(!of_changeset_attach_node(&chgset
, n2
), "fail attach n2\n");
526 unittest(!of_changeset_detach_node(&chgset
, nremove
), "fail remove node\n");
527 unittest(!of_changeset_attach_node(&chgset
, n21
), "fail attach n21\n");
528 unittest(!of_changeset_add_property(&chgset
, parent
, ppadd
), "fail add prop\n");
529 unittest(!of_changeset_update_property(&chgset
, parent
, ppupdate
), "fail update prop\n");
530 unittest(!of_changeset_remove_property(&chgset
, parent
, ppremove
), "fail remove prop\n");
531 unittest(!of_changeset_apply(&chgset
), "apply failed\n");
533 /* Make sure node names are constructed correctly */
534 unittest((np
= of_find_node_by_path("/testcase-data/changeset/n2/n21")),
535 "'%s' not added\n", n21
->full_name
);
538 unittest(!of_changeset_revert(&chgset
), "revert failed\n");
540 of_changeset_destroy(&chgset
);
544 static void __init
of_unittest_parse_interrupts(void)
546 struct device_node
*np
;
547 struct of_phandle_args args
;
550 np
= of_find_node_by_path("/testcase-data/interrupts/interrupts0");
552 pr_err("missing testcase data\n");
556 for (i
= 0; i
< 4; i
++) {
560 rc
= of_irq_parse_one(np
, i
, &args
);
563 passed
&= (args
.args_count
== 1);
564 passed
&= (args
.args
[0] == (i
+ 1));
566 unittest(passed
, "index %i - data error on node %s rc=%i\n",
567 i
, args
.np
->full_name
, rc
);
571 np
= of_find_node_by_path("/testcase-data/interrupts/interrupts1");
573 pr_err("missing testcase data\n");
577 for (i
= 0; i
< 4; i
++) {
581 rc
= of_irq_parse_one(np
, i
, &args
);
583 /* Test the values from tests-phandle.dtsi */
587 passed
&= (args
.args_count
== 1);
588 passed
&= (args
.args
[0] == 9);
592 passed
&= (args
.args_count
== 3);
593 passed
&= (args
.args
[0] == 10);
594 passed
&= (args
.args
[1] == 11);
595 passed
&= (args
.args
[2] == 12);
599 passed
&= (args
.args_count
== 2);
600 passed
&= (args
.args
[0] == 13);
601 passed
&= (args
.args
[1] == 14);
605 passed
&= (args
.args_count
== 2);
606 passed
&= (args
.args
[0] == 15);
607 passed
&= (args
.args
[1] == 16);
612 unittest(passed
, "index %i - data error on node %s rc=%i\n",
613 i
, args
.np
->full_name
, rc
);
618 static void __init
of_unittest_parse_interrupts_extended(void)
620 struct device_node
*np
;
621 struct of_phandle_args args
;
624 np
= of_find_node_by_path("/testcase-data/interrupts/interrupts-extended0");
626 pr_err("missing testcase data\n");
630 for (i
= 0; i
< 7; i
++) {
633 rc
= of_irq_parse_one(np
, i
, &args
);
635 /* Test the values from tests-phandle.dtsi */
639 passed
&= (args
.args_count
== 1);
640 passed
&= (args
.args
[0] == 1);
644 passed
&= (args
.args_count
== 3);
645 passed
&= (args
.args
[0] == 2);
646 passed
&= (args
.args
[1] == 3);
647 passed
&= (args
.args
[2] == 4);
651 passed
&= (args
.args_count
== 2);
652 passed
&= (args
.args
[0] == 5);
653 passed
&= (args
.args
[1] == 6);
657 passed
&= (args
.args_count
== 1);
658 passed
&= (args
.args
[0] == 9);
662 passed
&= (args
.args_count
== 3);
663 passed
&= (args
.args
[0] == 10);
664 passed
&= (args
.args
[1] == 11);
665 passed
&= (args
.args
[2] == 12);
669 passed
&= (args
.args_count
== 2);
670 passed
&= (args
.args
[0] == 13);
671 passed
&= (args
.args
[1] == 14);
675 passed
&= (args
.args_count
== 1);
676 passed
&= (args
.args
[0] == 15);
682 unittest(passed
, "index %i - data error on node %s rc=%i\n",
683 i
, args
.np
->full_name
, rc
);
688 static const struct of_device_id match_node_table
[] = {
689 { .data
= "A", .name
= "name0", }, /* Name alone is lowest priority */
690 { .data
= "B", .type
= "type1", }, /* followed by type alone */
692 { .data
= "Ca", .name
= "name2", .type
= "type1", }, /* followed by both together */
693 { .data
= "Cb", .name
= "name2", }, /* Only match when type doesn't match */
694 { .data
= "Cc", .name
= "name2", .type
= "type2", },
696 { .data
= "E", .compatible
= "compat3" },
697 { .data
= "G", .compatible
= "compat2", },
698 { .data
= "H", .compatible
= "compat2", .name
= "name5", },
699 { .data
= "I", .compatible
= "compat2", .type
= "type1", },
700 { .data
= "J", .compatible
= "compat2", .type
= "type1", .name
= "name8", },
701 { .data
= "K", .compatible
= "compat2", .name
= "name9", },
708 } match_node_tests
[] = {
709 { .path
= "/testcase-data/match-node/name0", .data
= "A", },
710 { .path
= "/testcase-data/match-node/name1", .data
= "B", },
711 { .path
= "/testcase-data/match-node/a/name2", .data
= "Ca", },
712 { .path
= "/testcase-data/match-node/b/name2", .data
= "Cb", },
713 { .path
= "/testcase-data/match-node/c/name2", .data
= "Cc", },
714 { .path
= "/testcase-data/match-node/name3", .data
= "E", },
715 { .path
= "/testcase-data/match-node/name4", .data
= "G", },
716 { .path
= "/testcase-data/match-node/name5", .data
= "H", },
717 { .path
= "/testcase-data/match-node/name6", .data
= "G", },
718 { .path
= "/testcase-data/match-node/name7", .data
= "I", },
719 { .path
= "/testcase-data/match-node/name8", .data
= "J", },
720 { .path
= "/testcase-data/match-node/name9", .data
= "K", },
723 static void __init
of_unittest_match_node(void)
725 struct device_node
*np
;
726 const struct of_device_id
*match
;
729 for (i
= 0; i
< ARRAY_SIZE(match_node_tests
); i
++) {
730 np
= of_find_node_by_path(match_node_tests
[i
].path
);
732 unittest(0, "missing testcase node %s\n",
733 match_node_tests
[i
].path
);
737 match
= of_match_node(match_node_table
, np
);
739 unittest(0, "%s didn't match anything\n",
740 match_node_tests
[i
].path
);
744 if (strcmp(match
->data
, match_node_tests
[i
].data
) != 0) {
745 unittest(0, "%s got wrong match. expected %s, got %s\n",
746 match_node_tests
[i
].path
, match_node_tests
[i
].data
,
747 (const char *)match
->data
);
750 unittest(1, "passed");
754 static struct resource test_bus_res
= {
757 .flags
= IORESOURCE_MEM
,
759 static const struct platform_device_info test_bus_info
= {
760 .name
= "unittest-bus",
762 static void __init
of_unittest_platform_populate(void)
765 struct device_node
*np
, *child
, *grandchild
;
766 struct platform_device
*pdev
, *test_bus
;
767 const struct of_device_id match
[] = {
768 { .compatible
= "test-device", },
772 np
= of_find_node_by_path("/testcase-data");
773 of_platform_default_populate(np
, NULL
, NULL
);
775 /* Test that a missing irq domain returns -EPROBE_DEFER */
776 np
= of_find_node_by_path("/testcase-data/testcase-device1");
777 pdev
= of_find_device_by_node(np
);
778 unittest(pdev
, "device 1 creation failed\n");
780 irq
= platform_get_irq(pdev
, 0);
781 unittest(irq
== -EPROBE_DEFER
, "device deferred probe failed - %d\n", irq
);
783 /* Test that a parsing failure does not return -EPROBE_DEFER */
784 np
= of_find_node_by_path("/testcase-data/testcase-device2");
785 pdev
= of_find_device_by_node(np
);
786 unittest(pdev
, "device 2 creation failed\n");
787 irq
= platform_get_irq(pdev
, 0);
788 unittest(irq
< 0 && irq
!= -EPROBE_DEFER
, "device parsing error failed - %d\n", irq
);
790 np
= of_find_node_by_path("/testcase-data/platform-tests");
791 unittest(np
, "No testcase data in device tree\n");
795 test_bus
= platform_device_register_full(&test_bus_info
);
796 rc
= PTR_ERR_OR_ZERO(test_bus
);
797 unittest(!rc
, "testbus registration failed; rc=%i\n", rc
);
800 test_bus
->dev
.of_node
= np
;
803 * Add a dummy resource to the test bus node after it is
804 * registered to catch problems with un-inserted resources. The
805 * DT code doesn't insert the resources, and it has caused the
806 * kernel to oops in the past. This makes sure the same bug
807 * doesn't crop up again.
809 platform_device_add_resources(test_bus
, &test_bus_res
, 1);
811 of_platform_populate(np
, match
, NULL
, &test_bus
->dev
);
812 for_each_child_of_node(np
, child
) {
813 for_each_child_of_node(child
, grandchild
)
814 unittest(of_find_device_by_node(grandchild
),
815 "Could not create device for node '%s'\n",
819 of_platform_depopulate(&test_bus
->dev
);
820 for_each_child_of_node(np
, child
) {
821 for_each_child_of_node(child
, grandchild
)
822 unittest(!of_find_device_by_node(grandchild
),
823 "device didn't get destroyed '%s'\n",
827 platform_device_unregister(test_bus
);
832 * update_node_properties - adds the properties
833 * of np into dup node (present in live tree) and
834 * updates parent of children of np to dup.
836 * @np: node already present in live tree
837 * @dup: node present in live tree to be updated
839 static void update_node_properties(struct device_node
*np
,
840 struct device_node
*dup
)
842 struct property
*prop
;
843 struct device_node
*child
;
845 for_each_property_of_node(np
, prop
)
846 of_add_property(dup
, prop
);
848 for_each_child_of_node(np
, child
)
853 * attach_node_and_children - attaches nodes
854 * and its children to live tree
856 * @np: Node to attach to live tree
858 static int attach_node_and_children(struct device_node
*np
)
860 struct device_node
*next
, *dup
, *child
;
863 dup
= of_find_node_by_path(np
->full_name
);
865 update_node_properties(np
, dup
);
872 mutex_lock(&of_mutex
);
873 raw_spin_lock_irqsave(&devtree_lock
, flags
);
874 np
->sibling
= np
->parent
->child
;
875 np
->parent
->child
= np
;
876 of_node_clear_flag(np
, OF_DETACHED
);
877 raw_spin_unlock_irqrestore(&devtree_lock
, flags
);
879 __of_attach_node_sysfs(np
);
880 mutex_unlock(&of_mutex
);
883 next
= child
->sibling
;
884 attach_node_and_children(child
);
892 * unittest_data_add - Reads, copies data from
893 * linked tree and attaches it to the live tree
895 static int __init
unittest_data_add(void)
898 struct device_node
*unittest_data_node
, *np
;
900 * __dtb_testcases_begin[] and __dtb_testcases_end[] are magically
901 * created by cmd_dt_S_dtb in scripts/Makefile.lib
903 extern uint8_t __dtb_testcases_begin
[];
904 extern uint8_t __dtb_testcases_end
[];
905 const int size
= __dtb_testcases_end
- __dtb_testcases_begin
;
909 pr_warn("%s: No testcase data to attach; not running tests\n",
915 unittest_data
= kmemdup(__dtb_testcases_begin
, size
, GFP_KERNEL
);
917 if (!unittest_data
) {
918 pr_warn("%s: Failed to allocate memory for unittest_data; "
919 "not running tests\n", __func__
);
922 of_fdt_unflatten_tree(unittest_data
, NULL
, &unittest_data_node
);
923 if (!unittest_data_node
) {
924 pr_warn("%s: No tree to attach; not running tests\n", __func__
);
927 of_node_set_flag(unittest_data_node
, OF_DETACHED
);
928 rc
= of_resolve_phandles(unittest_data_node
);
930 pr_err("%s: Failed to resolve phandles (rc=%i)\n", __func__
, rc
);
935 of_root
= unittest_data_node
;
936 for_each_of_allnodes(np
)
937 __of_attach_node_sysfs(np
);
938 of_aliases
= of_find_node_by_path("/aliases");
939 of_chosen
= of_find_node_by_path("/chosen");
943 /* attach the sub-tree to live tree */
944 np
= unittest_data_node
->child
;
946 struct device_node
*next
= np
->sibling
;
948 np
->parent
= of_root
;
949 attach_node_and_children(np
);
955 #ifdef CONFIG_OF_OVERLAY
957 static int unittest_probe(struct platform_device
*pdev
)
959 struct device
*dev
= &pdev
->dev
;
960 struct device_node
*np
= dev
->of_node
;
963 dev_err(dev
, "No OF data for device\n");
968 dev_dbg(dev
, "%s for node @%s\n", __func__
, np
->full_name
);
970 of_platform_populate(np
, NULL
, NULL
, &pdev
->dev
);
975 static int unittest_remove(struct platform_device
*pdev
)
977 struct device
*dev
= &pdev
->dev
;
978 struct device_node
*np
= dev
->of_node
;
980 dev_dbg(dev
, "%s for node @%s\n", __func__
, np
->full_name
);
984 static const struct of_device_id unittest_match
[] = {
985 { .compatible
= "unittest", },
989 static struct platform_driver unittest_driver
= {
990 .probe
= unittest_probe
,
991 .remove
= unittest_remove
,
994 .of_match_table
= of_match_ptr(unittest_match
),
998 /* get the platform device instantiated at the path */
999 static struct platform_device
*of_path_to_platform_device(const char *path
)
1001 struct device_node
*np
;
1002 struct platform_device
*pdev
;
1004 np
= of_find_node_by_path(path
);
1008 pdev
= of_find_device_by_node(np
);
1014 /* find out if a platform device exists at that path */
1015 static int of_path_platform_device_exists(const char *path
)
1017 struct platform_device
*pdev
;
1019 pdev
= of_path_to_platform_device(path
);
1020 platform_device_put(pdev
);
1021 return pdev
!= NULL
;
1024 #if IS_BUILTIN(CONFIG_I2C)
1026 /* get the i2c client device instantiated at the path */
1027 static struct i2c_client
*of_path_to_i2c_client(const char *path
)
1029 struct device_node
*np
;
1030 struct i2c_client
*client
;
1032 np
= of_find_node_by_path(path
);
1036 client
= of_find_i2c_device_by_node(np
);
1042 /* find out if a i2c client device exists at that path */
1043 static int of_path_i2c_client_exists(const char *path
)
1045 struct i2c_client
*client
;
1047 client
= of_path_to_i2c_client(path
);
1049 put_device(&client
->dev
);
1050 return client
!= NULL
;
1053 static int of_path_i2c_client_exists(const char *path
)
1064 static int of_path_device_type_exists(const char *path
,
1065 enum overlay_type ovtype
)
1069 return of_path_platform_device_exists(path
);
1071 return of_path_i2c_client_exists(path
);
1076 static const char *unittest_path(int nr
, enum overlay_type ovtype
)
1079 static char buf
[256];
1083 base
= "/testcase-data/overlay-node/test-bus";
1086 base
= "/testcase-data/overlay-node/test-bus/i2c-test-bus";
1092 snprintf(buf
, sizeof(buf
) - 1, "%s/test-unittest%d", base
, nr
);
1093 buf
[sizeof(buf
) - 1] = '\0';
1097 static int of_unittest_device_exists(int unittest_nr
, enum overlay_type ovtype
)
1101 path
= unittest_path(unittest_nr
, ovtype
);
1105 return of_path_platform_device_exists(path
);
1107 return of_path_i2c_client_exists(path
);
1112 static const char *overlay_path(int nr
)
1114 static char buf
[256];
1116 snprintf(buf
, sizeof(buf
) - 1,
1117 "/testcase-data/overlay%d", nr
);
1118 buf
[sizeof(buf
) - 1] = '\0';
1123 static const char *bus_path
= "/testcase-data/overlay-node/test-bus";
1125 /* it is guaranteed that overlay ids are assigned in sequence */
1126 #define MAX_UNITTEST_OVERLAYS 256
1127 static unsigned long overlay_id_bits
[BITS_TO_LONGS(MAX_UNITTEST_OVERLAYS
)];
1128 static int overlay_first_id
= -1;
1130 static void of_unittest_track_overlay(int id
)
1132 if (overlay_first_id
< 0)
1133 overlay_first_id
= id
;
1134 id
-= overlay_first_id
;
1136 /* we shouldn't need that many */
1137 BUG_ON(id
>= MAX_UNITTEST_OVERLAYS
);
1138 overlay_id_bits
[BIT_WORD(id
)] |= BIT_MASK(id
);
1141 static void of_unittest_untrack_overlay(int id
)
1143 if (overlay_first_id
< 0)
1145 id
-= overlay_first_id
;
1146 BUG_ON(id
>= MAX_UNITTEST_OVERLAYS
);
1147 overlay_id_bits
[BIT_WORD(id
)] &= ~BIT_MASK(id
);
1150 static void of_unittest_destroy_tracked_overlays(void)
1152 int id
, ret
, defers
;
1154 if (overlay_first_id
< 0)
1157 /* try until no defers */
1160 /* remove in reverse order */
1161 for (id
= MAX_UNITTEST_OVERLAYS
- 1; id
>= 0; id
--) {
1162 if (!(overlay_id_bits
[BIT_WORD(id
)] & BIT_MASK(id
)))
1165 ret
= of_overlay_destroy(id
+ overlay_first_id
);
1166 if (ret
== -ENODEV
) {
1167 pr_warn("%s: no overlay to destroy for #%d\n",
1168 __func__
, id
+ overlay_first_id
);
1173 pr_warn("%s: overlay destroy failed for #%d\n",
1174 __func__
, id
+ overlay_first_id
);
1178 overlay_id_bits
[BIT_WORD(id
)] &= ~BIT_MASK(id
);
1180 } while (defers
> 0);
1183 static int of_unittest_apply_overlay(int overlay_nr
, int unittest_nr
,
1186 struct device_node
*np
= NULL
;
1189 np
= of_find_node_by_path(overlay_path(overlay_nr
));
1191 unittest(0, "could not find overlay node @\"%s\"\n",
1192 overlay_path(overlay_nr
));
1197 ret
= of_overlay_create(np
);
1199 unittest(0, "could not create overlay from \"%s\"\n",
1200 overlay_path(overlay_nr
));
1204 of_unittest_track_overlay(id
);
1217 /* apply an overlay while checking before and after states */
1218 static int of_unittest_apply_overlay_check(int overlay_nr
, int unittest_nr
,
1219 int before
, int after
, enum overlay_type ovtype
)
1223 /* unittest device must not be in before state */
1224 if (of_unittest_device_exists(unittest_nr
, ovtype
) != before
) {
1225 unittest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
1226 overlay_path(overlay_nr
),
1227 unittest_path(unittest_nr
, ovtype
),
1228 !before
? "enabled" : "disabled");
1232 ret
= of_unittest_apply_overlay(overlay_nr
, unittest_nr
, NULL
);
1234 /* of_unittest_apply_overlay already called unittest() */
1238 /* unittest device must be to set to after state */
1239 if (of_unittest_device_exists(unittest_nr
, ovtype
) != after
) {
1240 unittest(0, "overlay @\"%s\" failed to create @\"%s\" %s\n",
1241 overlay_path(overlay_nr
),
1242 unittest_path(unittest_nr
, ovtype
),
1243 !after
? "enabled" : "disabled");
1250 /* apply an overlay and then revert it while checking before, after states */
1251 static int of_unittest_apply_revert_overlay_check(int overlay_nr
,
1252 int unittest_nr
, int before
, int after
,
1253 enum overlay_type ovtype
)
1257 /* unittest device must be in before state */
1258 if (of_unittest_device_exists(unittest_nr
, ovtype
) != before
) {
1259 unittest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
1260 overlay_path(overlay_nr
),
1261 unittest_path(unittest_nr
, ovtype
),
1262 !before
? "enabled" : "disabled");
1266 /* apply the overlay */
1267 ret
= of_unittest_apply_overlay(overlay_nr
, unittest_nr
, &ov_id
);
1269 /* of_unittest_apply_overlay already called unittest() */
1273 /* unittest device must be in after state */
1274 if (of_unittest_device_exists(unittest_nr
, ovtype
) != after
) {
1275 unittest(0, "overlay @\"%s\" failed to create @\"%s\" %s\n",
1276 overlay_path(overlay_nr
),
1277 unittest_path(unittest_nr
, ovtype
),
1278 !after
? "enabled" : "disabled");
1282 ret
= of_overlay_destroy(ov_id
);
1284 unittest(0, "overlay @\"%s\" failed to be destroyed @\"%s\"\n",
1285 overlay_path(overlay_nr
),
1286 unittest_path(unittest_nr
, ovtype
));
1290 /* unittest device must be again in before state */
1291 if (of_unittest_device_exists(unittest_nr
, PDEV_OVERLAY
) != before
) {
1292 unittest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
1293 overlay_path(overlay_nr
),
1294 unittest_path(unittest_nr
, ovtype
),
1295 !before
? "enabled" : "disabled");
1302 /* test activation of device */
1303 static void of_unittest_overlay_0(void)
1307 /* device should enable */
1308 ret
= of_unittest_apply_overlay_check(0, 0, 0, 1, PDEV_OVERLAY
);
1312 unittest(1, "overlay test %d passed\n", 0);
1315 /* test deactivation of device */
1316 static void of_unittest_overlay_1(void)
1320 /* device should disable */
1321 ret
= of_unittest_apply_overlay_check(1, 1, 1, 0, PDEV_OVERLAY
);
1325 unittest(1, "overlay test %d passed\n", 1);
1328 /* test activation of device */
1329 static void of_unittest_overlay_2(void)
1333 /* device should enable */
1334 ret
= of_unittest_apply_overlay_check(2, 2, 0, 1, PDEV_OVERLAY
);
1338 unittest(1, "overlay test %d passed\n", 2);
1341 /* test deactivation of device */
1342 static void of_unittest_overlay_3(void)
1346 /* device should disable */
1347 ret
= of_unittest_apply_overlay_check(3, 3, 1, 0, PDEV_OVERLAY
);
1351 unittest(1, "overlay test %d passed\n", 3);
1354 /* test activation of a full device node */
1355 static void of_unittest_overlay_4(void)
1359 /* device should disable */
1360 ret
= of_unittest_apply_overlay_check(4, 4, 0, 1, PDEV_OVERLAY
);
1364 unittest(1, "overlay test %d passed\n", 4);
1367 /* test overlay apply/revert sequence */
1368 static void of_unittest_overlay_5(void)
1372 /* device should disable */
1373 ret
= of_unittest_apply_revert_overlay_check(5, 5, 0, 1, PDEV_OVERLAY
);
1377 unittest(1, "overlay test %d passed\n", 5);
1380 /* test overlay application in sequence */
1381 static void of_unittest_overlay_6(void)
1383 struct device_node
*np
;
1384 int ret
, i
, ov_id
[2];
1385 int overlay_nr
= 6, unittest_nr
= 6;
1386 int before
= 0, after
= 1;
1388 /* unittest device must be in before state */
1389 for (i
= 0; i
< 2; i
++) {
1390 if (of_unittest_device_exists(unittest_nr
+ i
, PDEV_OVERLAY
)
1392 unittest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
1393 overlay_path(overlay_nr
+ i
),
1394 unittest_path(unittest_nr
+ i
,
1396 !before
? "enabled" : "disabled");
1401 /* apply the overlays */
1402 for (i
= 0; i
< 2; i
++) {
1404 np
= of_find_node_by_path(overlay_path(overlay_nr
+ i
));
1406 unittest(0, "could not find overlay node @\"%s\"\n",
1407 overlay_path(overlay_nr
+ i
));
1411 ret
= of_overlay_create(np
);
1413 unittest(0, "could not create overlay from \"%s\"\n",
1414 overlay_path(overlay_nr
+ i
));
1418 of_unittest_track_overlay(ov_id
[i
]);
1421 for (i
= 0; i
< 2; i
++) {
1422 /* unittest device must be in after state */
1423 if (of_unittest_device_exists(unittest_nr
+ i
, PDEV_OVERLAY
)
1425 unittest(0, "overlay @\"%s\" failed @\"%s\" %s\n",
1426 overlay_path(overlay_nr
+ i
),
1427 unittest_path(unittest_nr
+ i
,
1429 !after
? "enabled" : "disabled");
1434 for (i
= 1; i
>= 0; i
--) {
1435 ret
= of_overlay_destroy(ov_id
[i
]);
1437 unittest(0, "overlay @\"%s\" failed destroy @\"%s\"\n",
1438 overlay_path(overlay_nr
+ i
),
1439 unittest_path(unittest_nr
+ i
,
1443 of_unittest_untrack_overlay(ov_id
[i
]);
1446 for (i
= 0; i
< 2; i
++) {
1447 /* unittest device must be again in before state */
1448 if (of_unittest_device_exists(unittest_nr
+ i
, PDEV_OVERLAY
)
1450 unittest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
1451 overlay_path(overlay_nr
+ i
),
1452 unittest_path(unittest_nr
+ i
,
1454 !before
? "enabled" : "disabled");
1459 unittest(1, "overlay test %d passed\n", 6);
1462 /* test overlay application in sequence */
1463 static void of_unittest_overlay_8(void)
1465 struct device_node
*np
;
1466 int ret
, i
, ov_id
[2];
1467 int overlay_nr
= 8, unittest_nr
= 8;
1469 /* we don't care about device state in this test */
1471 /* apply the overlays */
1472 for (i
= 0; i
< 2; i
++) {
1474 np
= of_find_node_by_path(overlay_path(overlay_nr
+ i
));
1476 unittest(0, "could not find overlay node @\"%s\"\n",
1477 overlay_path(overlay_nr
+ i
));
1481 ret
= of_overlay_create(np
);
1483 unittest(0, "could not create overlay from \"%s\"\n",
1484 overlay_path(overlay_nr
+ i
));
1488 of_unittest_track_overlay(ov_id
[i
]);
1491 /* now try to remove first overlay (it should fail) */
1492 ret
= of_overlay_destroy(ov_id
[0]);
1494 unittest(0, "overlay @\"%s\" was destroyed @\"%s\"\n",
1495 overlay_path(overlay_nr
+ 0),
1496 unittest_path(unittest_nr
,
1501 /* removing them in order should work */
1502 for (i
= 1; i
>= 0; i
--) {
1503 ret
= of_overlay_destroy(ov_id
[i
]);
1505 unittest(0, "overlay @\"%s\" not destroyed @\"%s\"\n",
1506 overlay_path(overlay_nr
+ i
),
1507 unittest_path(unittest_nr
,
1511 of_unittest_untrack_overlay(ov_id
[i
]);
1514 unittest(1, "overlay test %d passed\n", 8);
1517 /* test insertion of a bus with parent devices */
1518 static void of_unittest_overlay_10(void)
1523 /* device should disable */
1524 ret
= of_unittest_apply_overlay_check(10, 10, 0, 1, PDEV_OVERLAY
);
1525 if (unittest(ret
== 0,
1526 "overlay test %d failed; overlay application\n", 10))
1529 child_path
= kasprintf(GFP_KERNEL
, "%s/test-unittest101",
1530 unittest_path(10, PDEV_OVERLAY
));
1531 if (unittest(child_path
, "overlay test %d failed; kasprintf\n", 10))
1534 ret
= of_path_device_type_exists(child_path
, PDEV_OVERLAY
);
1536 if (unittest(ret
, "overlay test %d failed; no child device\n", 10))
1540 /* test insertion of a bus with parent devices (and revert) */
1541 static void of_unittest_overlay_11(void)
1545 /* device should disable */
1546 ret
= of_unittest_apply_revert_overlay_check(11, 11, 0, 1,
1548 if (unittest(ret
== 0,
1549 "overlay test %d failed; overlay application\n", 11))
1553 #if IS_BUILTIN(CONFIG_I2C) && IS_ENABLED(CONFIG_OF_OVERLAY)
1555 struct unittest_i2c_bus_data
{
1556 struct platform_device
*pdev
;
1557 struct i2c_adapter adap
;
1560 static int unittest_i2c_master_xfer(struct i2c_adapter
*adap
,
1561 struct i2c_msg
*msgs
, int num
)
1563 struct unittest_i2c_bus_data
*std
= i2c_get_adapdata(adap
);
1570 static u32
unittest_i2c_functionality(struct i2c_adapter
*adap
)
1572 return I2C_FUNC_I2C
| I2C_FUNC_SMBUS_EMUL
;
1575 static const struct i2c_algorithm unittest_i2c_algo
= {
1576 .master_xfer
= unittest_i2c_master_xfer
,
1577 .functionality
= unittest_i2c_functionality
,
1580 static int unittest_i2c_bus_probe(struct platform_device
*pdev
)
1582 struct device
*dev
= &pdev
->dev
;
1583 struct device_node
*np
= dev
->of_node
;
1584 struct unittest_i2c_bus_data
*std
;
1585 struct i2c_adapter
*adap
;
1589 dev_err(dev
, "No OF data for device\n");
1594 dev_dbg(dev
, "%s for node @%s\n", __func__
, np
->full_name
);
1596 std
= devm_kzalloc(dev
, sizeof(*std
), GFP_KERNEL
);
1598 dev_err(dev
, "Failed to allocate unittest i2c data\n");
1602 /* link them together */
1604 platform_set_drvdata(pdev
, std
);
1607 i2c_set_adapdata(adap
, std
);
1609 strlcpy(adap
->name
, pdev
->name
, sizeof(adap
->name
));
1610 adap
->class = I2C_CLASS_DEPRECATED
;
1611 adap
->algo
= &unittest_i2c_algo
;
1612 adap
->dev
.parent
= dev
;
1613 adap
->dev
.of_node
= dev
->of_node
;
1614 adap
->timeout
= 5 * HZ
;
1617 ret
= i2c_add_numbered_adapter(adap
);
1619 dev_err(dev
, "Failed to add I2C adapter\n");
1626 static int unittest_i2c_bus_remove(struct platform_device
*pdev
)
1628 struct device
*dev
= &pdev
->dev
;
1629 struct device_node
*np
= dev
->of_node
;
1630 struct unittest_i2c_bus_data
*std
= platform_get_drvdata(pdev
);
1632 dev_dbg(dev
, "%s for node @%s\n", __func__
, np
->full_name
);
1633 i2c_del_adapter(&std
->adap
);
1638 static const struct of_device_id unittest_i2c_bus_match
[] = {
1639 { .compatible
= "unittest-i2c-bus", },
1643 static struct platform_driver unittest_i2c_bus_driver
= {
1644 .probe
= unittest_i2c_bus_probe
,
1645 .remove
= unittest_i2c_bus_remove
,
1647 .name
= "unittest-i2c-bus",
1648 .of_match_table
= of_match_ptr(unittest_i2c_bus_match
),
1652 static int unittest_i2c_dev_probe(struct i2c_client
*client
,
1653 const struct i2c_device_id
*id
)
1655 struct device
*dev
= &client
->dev
;
1656 struct device_node
*np
= client
->dev
.of_node
;
1659 dev_err(dev
, "No OF node\n");
1663 dev_dbg(dev
, "%s for node @%s\n", __func__
, np
->full_name
);
1668 static int unittest_i2c_dev_remove(struct i2c_client
*client
)
1670 struct device
*dev
= &client
->dev
;
1671 struct device_node
*np
= client
->dev
.of_node
;
1673 dev_dbg(dev
, "%s for node @%s\n", __func__
, np
->full_name
);
1677 static const struct i2c_device_id unittest_i2c_dev_id
[] = {
1678 { .name
= "unittest-i2c-dev" },
1682 static struct i2c_driver unittest_i2c_dev_driver
= {
1684 .name
= "unittest-i2c-dev",
1686 .probe
= unittest_i2c_dev_probe
,
1687 .remove
= unittest_i2c_dev_remove
,
1688 .id_table
= unittest_i2c_dev_id
,
1691 #if IS_BUILTIN(CONFIG_I2C_MUX)
1693 static int unittest_i2c_mux_select_chan(struct i2c_mux_core
*muxc
, u32 chan
)
1698 static int unittest_i2c_mux_probe(struct i2c_client
*client
,
1699 const struct i2c_device_id
*id
)
1702 struct device
*dev
= &client
->dev
;
1703 struct i2c_adapter
*adap
= to_i2c_adapter(dev
->parent
);
1704 struct device_node
*np
= client
->dev
.of_node
, *child
;
1705 struct i2c_mux_core
*muxc
;
1708 dev_dbg(dev
, "%s for node @%s\n", __func__
, np
->full_name
);
1711 dev_err(dev
, "No OF node\n");
1716 for_each_child_of_node(np
, child
) {
1717 ret
= of_property_read_u32(child
, "reg", ®
);
1720 if (max_reg
== (u32
)-1 || reg
> max_reg
)
1723 nchans
= max_reg
== (u32
)-1 ? 0 : max_reg
+ 1;
1725 dev_err(dev
, "No channels\n");
1729 muxc
= i2c_mux_alloc(adap
, dev
, nchans
, 0, 0,
1730 unittest_i2c_mux_select_chan
, NULL
);
1733 for (i
= 0; i
< nchans
; i
++) {
1734 ret
= i2c_mux_add_adapter(muxc
, 0, i
, 0);
1736 dev_err(dev
, "Failed to register mux #%d\n", i
);
1737 i2c_mux_del_adapters(muxc
);
1742 i2c_set_clientdata(client
, muxc
);
1747 static int unittest_i2c_mux_remove(struct i2c_client
*client
)
1749 struct device
*dev
= &client
->dev
;
1750 struct device_node
*np
= client
->dev
.of_node
;
1751 struct i2c_mux_core
*muxc
= i2c_get_clientdata(client
);
1753 dev_dbg(dev
, "%s for node @%s\n", __func__
, np
->full_name
);
1754 i2c_mux_del_adapters(muxc
);
1758 static const struct i2c_device_id unittest_i2c_mux_id
[] = {
1759 { .name
= "unittest-i2c-mux" },
1763 static struct i2c_driver unittest_i2c_mux_driver
= {
1765 .name
= "unittest-i2c-mux",
1767 .probe
= unittest_i2c_mux_probe
,
1768 .remove
= unittest_i2c_mux_remove
,
1769 .id_table
= unittest_i2c_mux_id
,
1774 static int of_unittest_overlay_i2c_init(void)
1778 ret
= i2c_add_driver(&unittest_i2c_dev_driver
);
1779 if (unittest(ret
== 0,
1780 "could not register unittest i2c device driver\n"))
1783 ret
= platform_driver_register(&unittest_i2c_bus_driver
);
1784 if (unittest(ret
== 0,
1785 "could not register unittest i2c bus driver\n"))
1788 #if IS_BUILTIN(CONFIG_I2C_MUX)
1789 ret
= i2c_add_driver(&unittest_i2c_mux_driver
);
1790 if (unittest(ret
== 0,
1791 "could not register unittest i2c mux driver\n"))
1798 static void of_unittest_overlay_i2c_cleanup(void)
1800 #if IS_BUILTIN(CONFIG_I2C_MUX)
1801 i2c_del_driver(&unittest_i2c_mux_driver
);
1803 platform_driver_unregister(&unittest_i2c_bus_driver
);
1804 i2c_del_driver(&unittest_i2c_dev_driver
);
1807 static void of_unittest_overlay_i2c_12(void)
1811 /* device should enable */
1812 ret
= of_unittest_apply_overlay_check(12, 12, 0, 1, I2C_OVERLAY
);
1816 unittest(1, "overlay test %d passed\n", 12);
1819 /* test deactivation of device */
1820 static void of_unittest_overlay_i2c_13(void)
1824 /* device should disable */
1825 ret
= of_unittest_apply_overlay_check(13, 13, 1, 0, I2C_OVERLAY
);
1829 unittest(1, "overlay test %d passed\n", 13);
1832 /* just check for i2c mux existence */
1833 static void of_unittest_overlay_i2c_14(void)
1837 static void of_unittest_overlay_i2c_15(void)
1841 /* device should enable */
1842 ret
= of_unittest_apply_overlay_check(15, 15, 0, 1, I2C_OVERLAY
);
1846 unittest(1, "overlay test %d passed\n", 15);
1851 static inline void of_unittest_overlay_i2c_14(void) { }
1852 static inline void of_unittest_overlay_i2c_15(void) { }
1856 static void __init
of_unittest_overlay(void)
1858 struct device_node
*bus_np
= NULL
;
1861 ret
= platform_driver_register(&unittest_driver
);
1863 unittest(0, "could not register unittest driver\n");
1867 bus_np
= of_find_node_by_path(bus_path
);
1868 if (bus_np
== NULL
) {
1869 unittest(0, "could not find bus_path \"%s\"\n", bus_path
);
1873 ret
= of_platform_default_populate(bus_np
, NULL
, NULL
);
1875 unittest(0, "could not populate bus @ \"%s\"\n", bus_path
);
1879 if (!of_unittest_device_exists(100, PDEV_OVERLAY
)) {
1880 unittest(0, "could not find unittest0 @ \"%s\"\n",
1881 unittest_path(100, PDEV_OVERLAY
));
1885 if (of_unittest_device_exists(101, PDEV_OVERLAY
)) {
1886 unittest(0, "unittest1 @ \"%s\" should not exist\n",
1887 unittest_path(101, PDEV_OVERLAY
));
1891 unittest(1, "basic infrastructure of overlays passed");
1893 /* tests in sequence */
1894 of_unittest_overlay_0();
1895 of_unittest_overlay_1();
1896 of_unittest_overlay_2();
1897 of_unittest_overlay_3();
1898 of_unittest_overlay_4();
1899 of_unittest_overlay_5();
1900 of_unittest_overlay_6();
1901 of_unittest_overlay_8();
1903 of_unittest_overlay_10();
1904 of_unittest_overlay_11();
1906 #if IS_BUILTIN(CONFIG_I2C)
1907 if (unittest(of_unittest_overlay_i2c_init() == 0, "i2c init failed\n"))
1910 of_unittest_overlay_i2c_12();
1911 of_unittest_overlay_i2c_13();
1912 of_unittest_overlay_i2c_14();
1913 of_unittest_overlay_i2c_15();
1915 of_unittest_overlay_i2c_cleanup();
1918 of_unittest_destroy_tracked_overlays();
1921 of_node_put(bus_np
);
1925 static inline void __init
of_unittest_overlay(void) { }
1928 static int __init
of_unittest(void)
1930 struct device_node
*np
;
1933 /* adding data for unittest */
1934 res
= unittest_data_add();
1938 of_aliases
= of_find_node_by_path("/aliases");
1940 np
= of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
1942 pr_info("No testcase data in device tree; not running tests\n");
1947 pr_info("start of unittest - you will see error messages\n");
1948 of_unittest_check_tree_linkage();
1949 of_unittest_check_phandles();
1950 of_unittest_find_node_by_name();
1951 of_unittest_dynamic();
1952 of_unittest_parse_phandle_with_args();
1953 of_unittest_property_string();
1954 of_unittest_property_copy();
1955 of_unittest_changeset();
1956 of_unittest_parse_interrupts();
1957 of_unittest_parse_interrupts_extended();
1958 of_unittest_match_node();
1959 of_unittest_platform_populate();
1960 of_unittest_overlay();
1962 /* Double check linkage after removing testcase data */
1963 of_unittest_check_tree_linkage();
1965 pr_info("end of unittest - %i passed, %i failed\n",
1966 unittest_results
.passed
, unittest_results
.failed
);
1970 late_initcall(of_unittest
);