1 // SPDX-License-Identifier: GPL-2.0
3 * Self tests for device tree subsystem
6 #define pr_fmt(fmt) "### dt-test ### " fmt
8 #include <linux/memblock.h>
10 #include <linux/dma-direct.h> /* to test phys_to_dma/dma_to_phys */
11 #include <linux/err.h>
12 #include <linux/errno.h>
13 #include <linux/hashtable.h>
14 #include <linux/libfdt.h>
16 #include <linux/of_address.h>
17 #include <linux/of_fdt.h>
18 #include <linux/of_irq.h>
19 #include <linux/of_platform.h>
20 #include <linux/list.h>
21 #include <linux/mutex.h>
22 #include <linux/slab.h>
23 #include <linux/device.h>
24 #include <linux/platform_device.h>
26 #include <linux/i2c.h>
27 #include <linux/i2c-mux.h>
28 #include <linux/gpio/driver.h>
30 #include <linux/bitops.h>
32 #include "of_private.h"
34 static struct unittest_results {
39 #define unittest(result, fmt, ...) ({ \
40 bool failed = !(result); \
42 unittest_results.failed++; \
43 pr_err("FAIL %s():%i " fmt, __func__, __LINE__, ##__VA_ARGS__); \
45 unittest_results.passed++; \
46 pr_debug("pass %s():%i\n", __func__, __LINE__); \
52 * Expected message may have a message level other than KERN_INFO.
53 * Print the expected message only if the current loglevel will allow
54 * the actual message to print.
56 * Do not use EXPECT_BEGIN() or EXPECT_END() for messages generated by
59 #define EXPECT_BEGIN(level, fmt, ...) \
60 printk(level pr_fmt("EXPECT \\ : ") fmt, ##__VA_ARGS__)
62 #define EXPECT_END(level, fmt, ...) \
63 printk(level pr_fmt("EXPECT / : ") fmt, ##__VA_ARGS__)
65 static void __init of_unittest_find_node_by_name(void)
67 struct device_node *np;
68 const char *options, *name;
70 np = of_find_node_by_path("/testcase-data");
71 name = kasprintf(GFP_KERNEL, "%pOF", np);
72 unittest(np && !strcmp("/testcase-data", name),
73 "find /testcase-data failed\n");
77 /* Test if trailing '/' works */
78 np = of_find_node_by_path("/testcase-data/");
79 unittest(!np, "trailing '/' on /testcase-data/ should fail\n");
81 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
82 name = kasprintf(GFP_KERNEL, "%pOF", np);
83 unittest(np && !strcmp("/testcase-data/phandle-tests/consumer-a", name),
84 "find /testcase-data/phandle-tests/consumer-a failed\n");
88 np = of_find_node_by_path("testcase-alias");
89 name = kasprintf(GFP_KERNEL, "%pOF", np);
90 unittest(np && !strcmp("/testcase-data", name),
91 "find testcase-alias failed\n");
95 /* Test if trailing '/' works on aliases */
96 np = of_find_node_by_path("testcase-alias/");
97 unittest(!np, "trailing '/' on testcase-alias/ should fail\n");
99 np = of_find_node_by_path("testcase-alias/phandle-tests/consumer-a");
100 name = kasprintf(GFP_KERNEL, "%pOF", np);
101 unittest(np && !strcmp("/testcase-data/phandle-tests/consumer-a", name),
102 "find testcase-alias/phandle-tests/consumer-a failed\n");
106 np = of_find_node_by_path("/testcase-data/missing-path");
107 unittest(!np, "non-existent path returned node %pOF\n", np);
110 np = of_find_node_by_path("missing-alias");
111 unittest(!np, "non-existent alias returned node %pOF\n", np);
114 np = of_find_node_by_path("testcase-alias/missing-path");
115 unittest(!np, "non-existent alias with relative path returned node %pOF\n", np);
118 np = of_find_node_opts_by_path("/testcase-data:testoption", &options);
119 unittest(np && !strcmp("testoption", options),
120 "option path test failed\n");
123 np = of_find_node_opts_by_path("/testcase-data:test/option", &options);
124 unittest(np && !strcmp("test/option", options),
125 "option path test, subcase #1 failed\n");
128 np = of_find_node_opts_by_path("/testcase-data/testcase-device1:test/option", &options);
129 unittest(np && !strcmp("test/option", options),
130 "option path test, subcase #2 failed\n");
133 np = of_find_node_opts_by_path("/testcase-data:testoption", NULL);
134 unittest(np, "NULL option path test failed\n");
137 np = of_find_node_opts_by_path("testcase-alias:testaliasoption",
139 unittest(np && !strcmp("testaliasoption", options),
140 "option alias path test failed\n");
143 np = of_find_node_opts_by_path("testcase-alias:test/alias/option",
145 unittest(np && !strcmp("test/alias/option", options),
146 "option alias path test, subcase #1 failed\n");
149 np = of_find_node_opts_by_path("testcase-alias:testaliasoption", NULL);
150 unittest(np, "NULL option alias path test failed\n");
153 options = "testoption";
154 np = of_find_node_opts_by_path("testcase-alias", &options);
155 unittest(np && !options, "option clearing test failed\n");
158 options = "testoption";
159 np = of_find_node_opts_by_path("/", &options);
160 unittest(np && !options, "option clearing root node test failed\n");
164 static void __init of_unittest_dynamic(void)
166 struct device_node *np;
167 struct property *prop;
169 np = of_find_node_by_path("/testcase-data");
171 pr_err("missing testcase data\n");
175 /* Array of 4 properties for the purpose of testing */
176 prop = kcalloc(4, sizeof(*prop), GFP_KERNEL);
178 unittest(0, "kzalloc() failed\n");
182 /* Add a new property - should pass*/
183 prop->name = "new-property";
184 prop->value = "new-property-data";
185 prop->length = strlen(prop->value) + 1;
186 unittest(of_add_property(np, prop) == 0, "Adding a new property failed\n");
188 /* Try to add an existing property - should fail */
190 prop->name = "new-property";
191 prop->value = "new-property-data-should-fail";
192 prop->length = strlen(prop->value) + 1;
193 unittest(of_add_property(np, prop) != 0,
194 "Adding an existing property should have failed\n");
196 /* Try to modify an existing property - should pass */
197 prop->value = "modify-property-data-should-pass";
198 prop->length = strlen(prop->value) + 1;
199 unittest(of_update_property(np, prop) == 0,
200 "Updating an existing property should have passed\n");
202 /* Try to modify non-existent property - should pass*/
204 prop->name = "modify-property";
205 prop->value = "modify-missing-property-data-should-pass";
206 prop->length = strlen(prop->value) + 1;
207 unittest(of_update_property(np, prop) == 0,
208 "Updating a missing property should have passed\n");
210 /* Remove property - should pass */
211 unittest(of_remove_property(np, prop) == 0,
212 "Removing a property should have passed\n");
214 /* Adding very large property - should pass */
216 prop->name = "large-property-PAGE_SIZEx8";
217 prop->length = PAGE_SIZE * 8;
218 prop->value = kzalloc(prop->length, GFP_KERNEL);
219 unittest(prop->value != NULL, "Unable to allocate large buffer\n");
221 unittest(of_add_property(np, prop) == 0,
222 "Adding a large property should have passed\n");
225 static int __init of_unittest_check_node_linkage(struct device_node *np)
227 struct device_node *child;
230 for_each_child_of_node(np, child) {
231 if (child->parent != np) {
232 pr_err("Child node %pOFn links to wrong parent %pOFn\n",
238 rc = of_unittest_check_node_linkage(child);
250 static void __init of_unittest_check_tree_linkage(void)
252 struct device_node *np;
253 int allnode_count = 0, child_count;
258 for_each_of_allnodes(np)
260 child_count = of_unittest_check_node_linkage(of_root);
262 unittest(child_count > 0, "Device node data structure is corrupted\n");
263 unittest(child_count == allnode_count,
264 "allnodes list size (%i) doesn't match sibling lists size (%i)\n",
265 allnode_count, child_count);
266 pr_debug("allnodes list size (%i); sibling lists size (%i)\n", allnode_count, child_count);
269 static void __init of_unittest_printf_one(struct device_node *np, const char *fmt,
270 const char *expected)
276 buf_size = strlen(expected) + 10;
277 buf = kmalloc(buf_size, GFP_KERNEL);
281 /* Baseline; check conversion with a large size limit */
282 memset(buf, 0xff, buf_size);
283 size = snprintf(buf, buf_size - 2, fmt, np);
285 /* use strcmp() instead of strncmp() here to be absolutely sure strings match */
286 unittest((strcmp(buf, expected) == 0) && (buf[size+1] == 0xff),
287 "sprintf failed; fmt='%s' expected='%s' rslt='%s'\n",
290 /* Make sure length limits work */
292 for (i = 0; i < 2; i++, size--) {
293 /* Clear the buffer, and make sure it works correctly still */
294 memset(buf, 0xff, buf_size);
295 snprintf(buf, size+1, fmt, np);
296 unittest(strncmp(buf, expected, size) == 0 && (buf[size+1] == 0xff),
297 "snprintf failed; size=%i fmt='%s' expected='%s' rslt='%s'\n",
298 size, fmt, expected, buf);
303 static void __init of_unittest_printf(void)
305 struct device_node *np;
306 const char *full_name = "/testcase-data/platform-tests/test-device@1/dev@100";
307 char phandle_str[16] = "";
309 np = of_find_node_by_path(full_name);
311 unittest(np, "testcase data missing\n");
315 num_to_str(phandle_str, sizeof(phandle_str), np->phandle, 0);
317 of_unittest_printf_one(np, "%pOF", full_name);
318 of_unittest_printf_one(np, "%pOFf", full_name);
319 of_unittest_printf_one(np, "%pOFn", "dev");
320 of_unittest_printf_one(np, "%2pOFn", "dev");
321 of_unittest_printf_one(np, "%5pOFn", " dev");
322 of_unittest_printf_one(np, "%pOFnc", "dev:test-sub-device");
323 of_unittest_printf_one(np, "%pOFp", phandle_str);
324 of_unittest_printf_one(np, "%pOFP", "dev@100");
325 of_unittest_printf_one(np, "ABC %pOFP ABC", "ABC dev@100 ABC");
326 of_unittest_printf_one(np, "%10pOFP", " dev@100");
327 of_unittest_printf_one(np, "%-10pOFP", "dev@100 ");
328 of_unittest_printf_one(of_root, "%pOFP", "/");
329 of_unittest_printf_one(np, "%pOFF", "----");
330 of_unittest_printf_one(np, "%pOFPF", "dev@100:----");
331 of_unittest_printf_one(np, "%pOFPFPc", "dev@100:----:dev@100:test-sub-device");
332 of_unittest_printf_one(np, "%pOFc", "test-sub-device");
333 of_unittest_printf_one(np, "%pOFC",
334 "\"test-sub-device\",\"test-compat2\",\"test-compat3\"");
338 struct hlist_node node;
339 struct device_node *np;
342 static DEFINE_HASHTABLE(phandle_ht, 8);
343 static void __init of_unittest_check_phandles(void)
345 struct device_node *np;
346 struct node_hash *nh;
347 struct hlist_node *tmp;
348 int i, dup_count = 0, phandle_count = 0;
350 for_each_of_allnodes(np) {
354 hash_for_each_possible(phandle_ht, nh, node, np->phandle) {
355 if (nh->np->phandle == np->phandle) {
356 pr_info("Duplicate phandle! %i used by %pOF and %pOF\n",
357 np->phandle, nh->np, np);
363 nh = kzalloc(sizeof(*nh), GFP_KERNEL);
368 hash_add(phandle_ht, &nh->node, np->phandle);
371 unittest(dup_count == 0, "Found %i duplicates in %i phandles\n",
372 dup_count, phandle_count);
375 hash_for_each_safe(phandle_ht, i, tmp, nh, node) {
381 static void __init of_unittest_parse_phandle_with_args(void)
383 struct device_node *np;
384 struct of_phandle_args args;
387 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
389 pr_err("missing testcase data\n");
393 rc = of_count_phandle_with_args(np, "phandle-list", "#phandle-cells");
394 unittest(rc == 7, "of_count_phandle_with_args() returned %i, expected 7\n", rc);
396 for (i = 0; i < 8; i++) {
399 memset(&args, 0, sizeof(args));
400 rc = of_parse_phandle_with_args(np, "phandle-list",
401 "#phandle-cells", i, &args);
403 /* Test the values from tests-phandle.dtsi */
407 passed &= (args.args_count == 1);
408 passed &= (args.args[0] == (i + 1));
412 passed &= (args.args_count == 2);
413 passed &= (args.args[0] == (i + 1));
414 passed &= (args.args[1] == 0);
417 passed &= (rc == -ENOENT);
421 passed &= (args.args_count == 3);
422 passed &= (args.args[0] == (i + 1));
423 passed &= (args.args[1] == 4);
424 passed &= (args.args[2] == 3);
428 passed &= (args.args_count == 2);
429 passed &= (args.args[0] == (i + 1));
430 passed &= (args.args[1] == 100);
434 passed &= (args.args_count == 0);
438 passed &= (args.args_count == 1);
439 passed &= (args.args[0] == (i + 1));
442 passed &= (rc == -ENOENT);
448 unittest(passed, "index %i - data error on node %pOF rc=%i\n",
452 /* Check for missing list property */
453 memset(&args, 0, sizeof(args));
454 rc = of_parse_phandle_with_args(np, "phandle-list-missing",
455 "#phandle-cells", 0, &args);
456 unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);
457 rc = of_count_phandle_with_args(np, "phandle-list-missing",
459 unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);
461 /* Check for missing cells property */
462 memset(&args, 0, sizeof(args));
464 EXPECT_BEGIN(KERN_INFO,
465 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1");
467 rc = of_parse_phandle_with_args(np, "phandle-list",
468 "#phandle-cells-missing", 0, &args);
470 EXPECT_END(KERN_INFO,
471 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1");
473 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
475 EXPECT_BEGIN(KERN_INFO,
476 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1");
478 rc = of_count_phandle_with_args(np, "phandle-list",
479 "#phandle-cells-missing");
481 EXPECT_END(KERN_INFO,
482 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1");
484 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
486 /* Check for bad phandle in list */
487 memset(&args, 0, sizeof(args));
489 EXPECT_BEGIN(KERN_INFO,
490 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle");
492 rc = of_parse_phandle_with_args(np, "phandle-list-bad-phandle",
493 "#phandle-cells", 0, &args);
495 EXPECT_END(KERN_INFO,
496 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle");
498 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
500 EXPECT_BEGIN(KERN_INFO,
501 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle");
503 rc = of_count_phandle_with_args(np, "phandle-list-bad-phandle",
506 EXPECT_END(KERN_INFO,
507 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle");
509 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
511 /* Check for incorrectly formed argument list */
512 memset(&args, 0, sizeof(args));
514 EXPECT_BEGIN(KERN_INFO,
515 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found -1");
517 rc = of_parse_phandle_with_args(np, "phandle-list-bad-args",
518 "#phandle-cells", 1, &args);
520 EXPECT_END(KERN_INFO,
521 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found -1");
523 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
525 EXPECT_BEGIN(KERN_INFO,
526 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found -1");
528 rc = of_count_phandle_with_args(np, "phandle-list-bad-args",
531 EXPECT_END(KERN_INFO,
532 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found -1");
534 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
537 static void __init of_unittest_parse_phandle_with_args_map(void)
539 struct device_node *np, *p0, *p1, *p2, *p3;
540 struct of_phandle_args args;
543 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-b");
545 pr_err("missing testcase data\n");
549 p0 = of_find_node_by_path("/testcase-data/phandle-tests/provider0");
551 pr_err("missing testcase data\n");
555 p1 = of_find_node_by_path("/testcase-data/phandle-tests/provider1");
557 pr_err("missing testcase data\n");
561 p2 = of_find_node_by_path("/testcase-data/phandle-tests/provider2");
563 pr_err("missing testcase data\n");
567 p3 = of_find_node_by_path("/testcase-data/phandle-tests/provider3");
569 pr_err("missing testcase data\n");
573 rc = of_count_phandle_with_args(np, "phandle-list", "#phandle-cells");
574 unittest(rc == 7, "of_count_phandle_with_args() returned %i, expected 7\n", rc);
576 for (i = 0; i < 8; i++) {
579 memset(&args, 0, sizeof(args));
580 rc = of_parse_phandle_with_args_map(np, "phandle-list",
581 "phandle", i, &args);
583 /* Test the values from tests-phandle.dtsi */
587 passed &= (args.np == p1);
588 passed &= (args.args_count == 1);
589 passed &= (args.args[0] == 1);
593 passed &= (args.np == p3);
594 passed &= (args.args_count == 3);
595 passed &= (args.args[0] == 2);
596 passed &= (args.args[1] == 5);
597 passed &= (args.args[2] == 3);
600 passed &= (rc == -ENOENT);
604 passed &= (args.np == p0);
605 passed &= (args.args_count == 0);
609 passed &= (args.np == p1);
610 passed &= (args.args_count == 1);
611 passed &= (args.args[0] == 3);
615 passed &= (args.np == p0);
616 passed &= (args.args_count == 0);
620 passed &= (args.np == p2);
621 passed &= (args.args_count == 2);
622 passed &= (args.args[0] == 15);
623 passed &= (args.args[1] == 0x20);
626 passed &= (rc == -ENOENT);
632 unittest(passed, "index %i - data error on node %s rc=%i\n",
633 i, args.np->full_name, rc);
636 /* Check for missing list property */
637 memset(&args, 0, sizeof(args));
638 rc = of_parse_phandle_with_args_map(np, "phandle-list-missing",
639 "phandle", 0, &args);
640 unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);
642 /* Check for missing cells,map,mask property */
643 memset(&args, 0, sizeof(args));
645 EXPECT_BEGIN(KERN_INFO,
646 "OF: /testcase-data/phandle-tests/consumer-b: could not get #phandle-missing-cells for /testcase-data/phandle-tests/provider1");
648 rc = of_parse_phandle_with_args_map(np, "phandle-list",
649 "phandle-missing", 0, &args);
650 EXPECT_END(KERN_INFO,
651 "OF: /testcase-data/phandle-tests/consumer-b: could not get #phandle-missing-cells for /testcase-data/phandle-tests/provider1");
653 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
655 /* Check for bad phandle in list */
656 memset(&args, 0, sizeof(args));
658 EXPECT_BEGIN(KERN_INFO,
659 "OF: /testcase-data/phandle-tests/consumer-b: could not find phandle");
661 rc = of_parse_phandle_with_args_map(np, "phandle-list-bad-phandle",
662 "phandle", 0, &args);
663 EXPECT_END(KERN_INFO,
664 "OF: /testcase-data/phandle-tests/consumer-b: could not find phandle");
666 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
668 /* Check for incorrectly formed argument list */
669 memset(&args, 0, sizeof(args));
671 EXPECT_BEGIN(KERN_INFO,
672 "OF: /testcase-data/phandle-tests/consumer-b: #phandle-cells = 2 found -1");
674 rc = of_parse_phandle_with_args_map(np, "phandle-list-bad-args",
675 "phandle", 1, &args);
676 EXPECT_END(KERN_INFO,
677 "OF: /testcase-data/phandle-tests/consumer-b: #phandle-cells = 2 found -1");
679 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
682 static void __init of_unittest_property_string(void)
684 const char *strings[4];
685 struct device_node *np;
688 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
690 pr_err("No testcase data in device tree\n");
694 rc = of_property_match_string(np, "phandle-list-names", "first");
695 unittest(rc == 0, "first expected:0 got:%i\n", rc);
696 rc = of_property_match_string(np, "phandle-list-names", "second");
697 unittest(rc == 1, "second expected:1 got:%i\n", rc);
698 rc = of_property_match_string(np, "phandle-list-names", "third");
699 unittest(rc == 2, "third expected:2 got:%i\n", rc);
700 rc = of_property_match_string(np, "phandle-list-names", "fourth");
701 unittest(rc == -ENODATA, "unmatched string; rc=%i\n", rc);
702 rc = of_property_match_string(np, "missing-property", "blah");
703 unittest(rc == -EINVAL, "missing property; rc=%i\n", rc);
704 rc = of_property_match_string(np, "empty-property", "blah");
705 unittest(rc == -ENODATA, "empty property; rc=%i\n", rc);
706 rc = of_property_match_string(np, "unterminated-string", "blah");
707 unittest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc);
709 /* of_property_count_strings() tests */
710 rc = of_property_count_strings(np, "string-property");
711 unittest(rc == 1, "Incorrect string count; rc=%i\n", rc);
712 rc = of_property_count_strings(np, "phandle-list-names");
713 unittest(rc == 3, "Incorrect string count; rc=%i\n", rc);
714 rc = of_property_count_strings(np, "unterminated-string");
715 unittest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc);
716 rc = of_property_count_strings(np, "unterminated-string-list");
717 unittest(rc == -EILSEQ, "unterminated string array; rc=%i\n", rc);
719 /* of_property_read_string_index() tests */
720 rc = of_property_read_string_index(np, "string-property", 0, strings);
721 unittest(rc == 0 && !strcmp(strings[0], "foobar"), "of_property_read_string_index() failure; rc=%i\n", rc);
723 rc = of_property_read_string_index(np, "string-property", 1, strings);
724 unittest(rc == -ENODATA && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
725 rc = of_property_read_string_index(np, "phandle-list-names", 0, strings);
726 unittest(rc == 0 && !strcmp(strings[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc);
727 rc = of_property_read_string_index(np, "phandle-list-names", 1, strings);
728 unittest(rc == 0 && !strcmp(strings[0], "second"), "of_property_read_string_index() failure; rc=%i\n", rc);
729 rc = of_property_read_string_index(np, "phandle-list-names", 2, strings);
730 unittest(rc == 0 && !strcmp(strings[0], "third"), "of_property_read_string_index() failure; rc=%i\n", rc);
732 rc = of_property_read_string_index(np, "phandle-list-names", 3, strings);
733 unittest(rc == -ENODATA && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
735 rc = of_property_read_string_index(np, "unterminated-string", 0, strings);
736 unittest(rc == -EILSEQ && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
737 rc = of_property_read_string_index(np, "unterminated-string-list", 0, strings);
738 unittest(rc == 0 && !strcmp(strings[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc);
740 rc = of_property_read_string_index(np, "unterminated-string-list", 2, strings); /* should fail */
741 unittest(rc == -EILSEQ && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
744 /* of_property_read_string_array() tests */
745 rc = of_property_read_string_array(np, "string-property", strings, 4);
746 unittest(rc == 1, "Incorrect string count; rc=%i\n", rc);
747 rc = of_property_read_string_array(np, "phandle-list-names", strings, 4);
748 unittest(rc == 3, "Incorrect string count; rc=%i\n", rc);
749 rc = of_property_read_string_array(np, "unterminated-string", strings, 4);
750 unittest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc);
751 /* -- An incorrectly formed string should cause a failure */
752 rc = of_property_read_string_array(np, "unterminated-string-list", strings, 4);
753 unittest(rc == -EILSEQ, "unterminated string array; rc=%i\n", rc);
754 /* -- parsing the correctly formed strings should still work: */
756 rc = of_property_read_string_array(np, "unterminated-string-list", strings, 2);
757 unittest(rc == 2 && strings[2] == NULL, "of_property_read_string_array() failure; rc=%i\n", rc);
759 rc = of_property_read_string_array(np, "phandle-list-names", strings, 1);
760 unittest(rc == 1 && strings[1] == NULL, "Overwrote end of string array; rc=%i, str='%s'\n", rc, strings[1]);
763 #define propcmp(p1, p2) (((p1)->length == (p2)->length) && \
764 (p1)->value && (p2)->value && \
765 !memcmp((p1)->value, (p2)->value, (p1)->length) && \
766 !strcmp((p1)->name, (p2)->name))
767 static void __init of_unittest_property_copy(void)
769 #ifdef CONFIG_OF_DYNAMIC
770 struct property p1 = { .name = "p1", .length = 0, .value = "" };
771 struct property p2 = { .name = "p2", .length = 5, .value = "abcd" };
772 struct property *new;
774 new = __of_prop_dup(&p1, GFP_KERNEL);
775 unittest(new && propcmp(&p1, new), "empty property didn't copy correctly\n");
780 new = __of_prop_dup(&p2, GFP_KERNEL);
781 unittest(new && propcmp(&p2, new), "non-empty property didn't copy correctly\n");
788 static void __init of_unittest_changeset(void)
790 #ifdef CONFIG_OF_DYNAMIC
791 struct property *ppadd, padd = { .name = "prop-add", .length = 1, .value = "" };
792 struct property *ppname_n1, pname_n1 = { .name = "name", .length = 3, .value = "n1" };
793 struct property *ppname_n2, pname_n2 = { .name = "name", .length = 3, .value = "n2" };
794 struct property *ppname_n21, pname_n21 = { .name = "name", .length = 3, .value = "n21" };
795 struct property *ppupdate, pupdate = { .name = "prop-update", .length = 5, .value = "abcd" };
796 struct property *ppremove;
797 struct device_node *n1, *n2, *n21, *nchangeset, *nremove, *parent, *np;
798 struct of_changeset chgset;
800 n1 = __of_node_dup(NULL, "n1");
801 unittest(n1, "testcase setup failure\n");
803 n2 = __of_node_dup(NULL, "n2");
804 unittest(n2, "testcase setup failure\n");
806 n21 = __of_node_dup(NULL, "n21");
807 unittest(n21, "testcase setup failure %p\n", n21);
809 nchangeset = of_find_node_by_path("/testcase-data/changeset");
810 nremove = of_get_child_by_name(nchangeset, "node-remove");
811 unittest(nremove, "testcase setup failure\n");
813 ppadd = __of_prop_dup(&padd, GFP_KERNEL);
814 unittest(ppadd, "testcase setup failure\n");
816 ppname_n1 = __of_prop_dup(&pname_n1, GFP_KERNEL);
817 unittest(ppname_n1, "testcase setup failure\n");
819 ppname_n2 = __of_prop_dup(&pname_n2, GFP_KERNEL);
820 unittest(ppname_n2, "testcase setup failure\n");
822 ppname_n21 = __of_prop_dup(&pname_n21, GFP_KERNEL);
823 unittest(ppname_n21, "testcase setup failure\n");
825 ppupdate = __of_prop_dup(&pupdate, GFP_KERNEL);
826 unittest(ppupdate, "testcase setup failure\n");
833 ppremove = of_find_property(parent, "prop-remove", NULL);
834 unittest(ppremove, "failed to find removal prop");
836 of_changeset_init(&chgset);
838 unittest(!of_changeset_attach_node(&chgset, n1), "fail attach n1\n");
839 unittest(!of_changeset_add_property(&chgset, n1, ppname_n1), "fail add prop name\n");
841 unittest(!of_changeset_attach_node(&chgset, n2), "fail attach n2\n");
842 unittest(!of_changeset_add_property(&chgset, n2, ppname_n2), "fail add prop name\n");
844 unittest(!of_changeset_detach_node(&chgset, nremove), "fail remove node\n");
845 unittest(!of_changeset_add_property(&chgset, n21, ppname_n21), "fail add prop name\n");
847 unittest(!of_changeset_attach_node(&chgset, n21), "fail attach n21\n");
849 unittest(!of_changeset_add_property(&chgset, parent, ppadd), "fail add prop prop-add\n");
850 unittest(!of_changeset_update_property(&chgset, parent, ppupdate), "fail update prop\n");
851 unittest(!of_changeset_remove_property(&chgset, parent, ppremove), "fail remove prop\n");
853 unittest(!of_changeset_apply(&chgset), "apply failed\n");
855 of_node_put(nchangeset);
857 /* Make sure node names are constructed correctly */
858 unittest((np = of_find_node_by_path("/testcase-data/changeset/n2/n21")),
859 "'%pOF' not added\n", n21);
862 unittest(!of_changeset_revert(&chgset), "revert failed\n");
864 of_changeset_destroy(&chgset);
872 static void __init of_unittest_dma_get_max_cpu_address(void)
874 struct device_node *np;
875 phys_addr_t cpu_addr;
877 if (!IS_ENABLED(CONFIG_OF_ADDRESS))
880 np = of_find_node_by_path("/testcase-data/address-tests");
882 pr_err("missing testcase data\n");
886 cpu_addr = of_dma_get_max_cpu_address(np);
887 unittest(cpu_addr == 0x4fffffff,
888 "of_dma_get_max_cpu_address: wrong CPU addr %pad (expecting %x)\n",
889 &cpu_addr, 0x4fffffff);
892 static void __init of_unittest_dma_ranges_one(const char *path,
893 u64 expect_dma_addr, u64 expect_paddr)
895 #ifdef CONFIG_HAS_DMA
896 struct device_node *np;
897 const struct bus_dma_region *map = NULL;
900 np = of_find_node_by_path(path);
902 pr_err("missing testcase data\n");
906 rc = of_dma_get_range(np, &map);
908 unittest(!rc, "of_dma_get_range failed on node %pOF rc=%i\n", np, rc);
913 struct device *dev_bogus;
915 dev_bogus = kzalloc(sizeof(struct device), GFP_KERNEL);
917 unittest(0, "kzalloc() failed\n");
922 dev_bogus->dma_range_map = map;
923 paddr = dma_to_phys(dev_bogus, expect_dma_addr);
924 dma_addr = phys_to_dma(dev_bogus, expect_paddr);
926 unittest(paddr == expect_paddr,
927 "of_dma_get_range: wrong phys addr %pap (expecting %llx) on node %pOF\n",
928 &paddr, expect_paddr, np);
929 unittest(dma_addr == expect_dma_addr,
930 "of_dma_get_range: wrong DMA addr %pad (expecting %llx) on node %pOF\n",
931 &dma_addr, expect_dma_addr, np);
940 static void __init of_unittest_parse_dma_ranges(void)
942 of_unittest_dma_ranges_one("/testcase-data/address-tests/device@70000000",
944 if (IS_ENABLED(CONFIG_ARCH_DMA_ADDR_T_64BIT))
945 of_unittest_dma_ranges_one("/testcase-data/address-tests/bus@80000000/device@1000",
946 0x100000000, 0x20000000);
947 of_unittest_dma_ranges_one("/testcase-data/address-tests/pci@90000000",
948 0x80000000, 0x20000000);
951 static void __init of_unittest_pci_dma_ranges(void)
953 struct device_node *np;
954 struct of_pci_range range;
955 struct of_pci_range_parser parser;
958 if (!IS_ENABLED(CONFIG_PCI))
961 np = of_find_node_by_path("/testcase-data/address-tests/pci@90000000");
963 pr_err("missing testcase data\n");
967 if (of_pci_dma_range_parser_init(&parser, np)) {
968 pr_err("missing dma-ranges property\n");
973 * Get the dma-ranges from the device tree
975 for_each_of_pci_range(&parser, &range) {
977 unittest(range.size == 0x10000000,
978 "for_each_of_pci_range wrong size on node %pOF size=%llx\n",
980 unittest(range.cpu_addr == 0x20000000,
981 "for_each_of_pci_range wrong CPU addr (%llx) on node %pOF",
983 unittest(range.pci_addr == 0x80000000,
984 "for_each_of_pci_range wrong DMA addr (%llx) on node %pOF",
987 unittest(range.size == 0x10000000,
988 "for_each_of_pci_range wrong size on node %pOF size=%llx\n",
990 unittest(range.cpu_addr == 0x40000000,
991 "for_each_of_pci_range wrong CPU addr (%llx) on node %pOF",
993 unittest(range.pci_addr == 0xc0000000,
994 "for_each_of_pci_range wrong DMA addr (%llx) on node %pOF",
1003 static void __init of_unittest_parse_interrupts(void)
1005 struct device_node *np;
1006 struct of_phandle_args args;
1009 if (of_irq_workarounds & OF_IMAP_OLDWORLD_MAC)
1012 np = of_find_node_by_path("/testcase-data/interrupts/interrupts0");
1014 pr_err("missing testcase data\n");
1018 for (i = 0; i < 4; i++) {
1021 memset(&args, 0, sizeof(args));
1022 rc = of_irq_parse_one(np, i, &args);
1025 passed &= (args.args_count == 1);
1026 passed &= (args.args[0] == (i + 1));
1028 unittest(passed, "index %i - data error on node %pOF rc=%i\n",
1033 np = of_find_node_by_path("/testcase-data/interrupts/interrupts1");
1035 pr_err("missing testcase data\n");
1039 for (i = 0; i < 4; i++) {
1042 memset(&args, 0, sizeof(args));
1043 rc = of_irq_parse_one(np, i, &args);
1045 /* Test the values from tests-phandle.dtsi */
1049 passed &= (args.args_count == 1);
1050 passed &= (args.args[0] == 9);
1054 passed &= (args.args_count == 3);
1055 passed &= (args.args[0] == 10);
1056 passed &= (args.args[1] == 11);
1057 passed &= (args.args[2] == 12);
1061 passed &= (args.args_count == 2);
1062 passed &= (args.args[0] == 13);
1063 passed &= (args.args[1] == 14);
1067 passed &= (args.args_count == 2);
1068 passed &= (args.args[0] == 15);
1069 passed &= (args.args[1] == 16);
1074 unittest(passed, "index %i - data error on node %pOF rc=%i\n",
1080 static void __init of_unittest_parse_interrupts_extended(void)
1082 struct device_node *np;
1083 struct of_phandle_args args;
1086 if (of_irq_workarounds & OF_IMAP_OLDWORLD_MAC)
1089 np = of_find_node_by_path("/testcase-data/interrupts/interrupts-extended0");
1091 pr_err("missing testcase data\n");
1095 for (i = 0; i < 7; i++) {
1098 memset(&args, 0, sizeof(args));
1099 rc = of_irq_parse_one(np, i, &args);
1101 /* Test the values from tests-phandle.dtsi */
1105 passed &= (args.args_count == 1);
1106 passed &= (args.args[0] == 1);
1110 passed &= (args.args_count == 3);
1111 passed &= (args.args[0] == 2);
1112 passed &= (args.args[1] == 3);
1113 passed &= (args.args[2] == 4);
1117 passed &= (args.args_count == 2);
1118 passed &= (args.args[0] == 5);
1119 passed &= (args.args[1] == 6);
1123 passed &= (args.args_count == 1);
1124 passed &= (args.args[0] == 9);
1128 passed &= (args.args_count == 3);
1129 passed &= (args.args[0] == 10);
1130 passed &= (args.args[1] == 11);
1131 passed &= (args.args[2] == 12);
1135 passed &= (args.args_count == 2);
1136 passed &= (args.args[0] == 13);
1137 passed &= (args.args[1] == 14);
1141 passed &= (args.args_count == 1);
1142 passed &= (args.args[0] == 15);
1148 unittest(passed, "index %i - data error on node %pOF rc=%i\n",
1154 static const struct of_device_id match_node_table[] = {
1155 { .data = "A", .name = "name0", }, /* Name alone is lowest priority */
1156 { .data = "B", .type = "type1", }, /* followed by type alone */
1158 { .data = "Ca", .name = "name2", .type = "type1", }, /* followed by both together */
1159 { .data = "Cb", .name = "name2", }, /* Only match when type doesn't match */
1160 { .data = "Cc", .name = "name2", .type = "type2", },
1162 { .data = "E", .compatible = "compat3" },
1163 { .data = "G", .compatible = "compat2", },
1164 { .data = "H", .compatible = "compat2", .name = "name5", },
1165 { .data = "I", .compatible = "compat2", .type = "type1", },
1166 { .data = "J", .compatible = "compat2", .type = "type1", .name = "name8", },
1167 { .data = "K", .compatible = "compat2", .name = "name9", },
1174 } match_node_tests[] = {
1175 { .path = "/testcase-data/match-node/name0", .data = "A", },
1176 { .path = "/testcase-data/match-node/name1", .data = "B", },
1177 { .path = "/testcase-data/match-node/a/name2", .data = "Ca", },
1178 { .path = "/testcase-data/match-node/b/name2", .data = "Cb", },
1179 { .path = "/testcase-data/match-node/c/name2", .data = "Cc", },
1180 { .path = "/testcase-data/match-node/name3", .data = "E", },
1181 { .path = "/testcase-data/match-node/name4", .data = "G", },
1182 { .path = "/testcase-data/match-node/name5", .data = "H", },
1183 { .path = "/testcase-data/match-node/name6", .data = "G", },
1184 { .path = "/testcase-data/match-node/name7", .data = "I", },
1185 { .path = "/testcase-data/match-node/name8", .data = "J", },
1186 { .path = "/testcase-data/match-node/name9", .data = "K", },
1189 static void __init of_unittest_match_node(void)
1191 struct device_node *np;
1192 const struct of_device_id *match;
1195 for (i = 0; i < ARRAY_SIZE(match_node_tests); i++) {
1196 np = of_find_node_by_path(match_node_tests[i].path);
1198 unittest(0, "missing testcase node %s\n",
1199 match_node_tests[i].path);
1203 match = of_match_node(match_node_table, np);
1205 unittest(0, "%s didn't match anything\n",
1206 match_node_tests[i].path);
1210 if (strcmp(match->data, match_node_tests[i].data) != 0) {
1211 unittest(0, "%s got wrong match. expected %s, got %s\n",
1212 match_node_tests[i].path, match_node_tests[i].data,
1213 (const char *)match->data);
1216 unittest(1, "passed");
1220 static struct resource test_bus_res = {
1221 .start = 0xfffffff8,
1223 .flags = IORESOURCE_MEM,
1225 static const struct platform_device_info test_bus_info = {
1226 .name = "unittest-bus",
1228 static void __init of_unittest_platform_populate(void)
1231 struct device_node *np, *child, *grandchild;
1232 struct platform_device *pdev, *test_bus;
1233 const struct of_device_id match[] = {
1234 { .compatible = "test-device", },
1238 np = of_find_node_by_path("/testcase-data");
1239 of_platform_default_populate(np, NULL, NULL);
1241 /* Test that a missing irq domain returns -EPROBE_DEFER */
1242 np = of_find_node_by_path("/testcase-data/testcase-device1");
1243 pdev = of_find_device_by_node(np);
1244 unittest(pdev, "device 1 creation failed\n");
1246 if (!(of_irq_workarounds & OF_IMAP_OLDWORLD_MAC)) {
1247 irq = platform_get_irq(pdev, 0);
1248 unittest(irq == -EPROBE_DEFER,
1249 "device deferred probe failed - %d\n", irq);
1251 /* Test that a parsing failure does not return -EPROBE_DEFER */
1252 np = of_find_node_by_path("/testcase-data/testcase-device2");
1253 pdev = of_find_device_by_node(np);
1254 unittest(pdev, "device 2 creation failed\n");
1256 EXPECT_BEGIN(KERN_INFO,
1257 "platform testcase-data:testcase-device2: IRQ index 0 not found");
1259 irq = platform_get_irq(pdev, 0);
1261 EXPECT_END(KERN_INFO,
1262 "platform testcase-data:testcase-device2: IRQ index 0 not found");
1264 unittest(irq < 0 && irq != -EPROBE_DEFER,
1265 "device parsing error failed - %d\n", irq);
1268 np = of_find_node_by_path("/testcase-data/platform-tests");
1269 unittest(np, "No testcase data in device tree\n");
1273 test_bus = platform_device_register_full(&test_bus_info);
1274 rc = PTR_ERR_OR_ZERO(test_bus);
1275 unittest(!rc, "testbus registration failed; rc=%i\n", rc);
1280 test_bus->dev.of_node = np;
1283 * Add a dummy resource to the test bus node after it is
1284 * registered to catch problems with un-inserted resources. The
1285 * DT code doesn't insert the resources, and it has caused the
1286 * kernel to oops in the past. This makes sure the same bug
1287 * doesn't crop up again.
1289 platform_device_add_resources(test_bus, &test_bus_res, 1);
1291 of_platform_populate(np, match, NULL, &test_bus->dev);
1292 for_each_child_of_node(np, child) {
1293 for_each_child_of_node(child, grandchild) {
1294 pdev = of_find_device_by_node(grandchild);
1296 "Could not create device for node '%pOFn'\n",
1302 of_platform_depopulate(&test_bus->dev);
1303 for_each_child_of_node(np, child) {
1304 for_each_child_of_node(child, grandchild)
1305 unittest(!of_find_device_by_node(grandchild),
1306 "device didn't get destroyed '%pOFn'\n",
1310 platform_device_unregister(test_bus);
1315 * update_node_properties - adds the properties
1316 * of np into dup node (present in live tree) and
1317 * updates parent of children of np to dup.
1319 * @np: node whose properties are being added to the live tree
1320 * @dup: node present in live tree to be updated
1322 static void update_node_properties(struct device_node *np,
1323 struct device_node *dup)
1325 struct property *prop;
1326 struct property *save_next;
1327 struct device_node *child;
1330 for_each_child_of_node(np, child)
1331 child->parent = dup;
1334 * "unittest internal error: unable to add testdata property"
1336 * If this message reports a property in node '/__symbols__' then
1337 * the respective unittest overlay contains a label that has the
1338 * same name as a label in the live devicetree. The label will
1339 * be in the live devicetree only if the devicetree source was
1340 * compiled with the '-@' option. If you encounter this error,
1341 * please consider renaming __all__ of the labels in the unittest
1342 * overlay dts files with an odd prefix that is unlikely to be
1343 * used in a real devicetree.
1347 * open code for_each_property_of_node() because of_add_property()
1348 * sets prop->next to NULL
1350 for (prop = np->properties; prop != NULL; prop = save_next) {
1351 save_next = prop->next;
1352 ret = of_add_property(dup, prop);
1354 if (ret == -EEXIST && !strcmp(prop->name, "name"))
1356 pr_err("unittest internal error: unable to add testdata property %pOF/%s",
1363 * attach_node_and_children - attaches nodes
1364 * and its children to live tree.
1365 * CAUTION: misleading function name - if node @np already exists in
1366 * the live tree then children of @np are *not* attached to the live
1367 * tree. This works for the current test devicetree nodes because such
1368 * nodes do not have child nodes.
1370 * @np: Node to attach to live tree
1372 static void attach_node_and_children(struct device_node *np)
1374 struct device_node *next, *dup, *child;
1375 unsigned long flags;
1376 const char *full_name;
1378 full_name = kasprintf(GFP_KERNEL, "%pOF", np);
1380 if (!strcmp(full_name, "/__local_fixups__") ||
1381 !strcmp(full_name, "/__fixups__")) {
1386 dup = of_find_node_by_path(full_name);
1389 update_node_properties(np, dup);
1396 mutex_lock(&of_mutex);
1397 raw_spin_lock_irqsave(&devtree_lock, flags);
1398 np->sibling = np->parent->child;
1399 np->parent->child = np;
1400 of_node_clear_flag(np, OF_DETACHED);
1401 raw_spin_unlock_irqrestore(&devtree_lock, flags);
1403 __of_attach_node_sysfs(np);
1404 mutex_unlock(&of_mutex);
1407 next = child->sibling;
1408 attach_node_and_children(child);
1414 * unittest_data_add - Reads, copies data from
1415 * linked tree and attaches it to the live tree
1417 static int __init unittest_data_add(void)
1419 void *unittest_data;
1420 struct device_node *unittest_data_node, *np;
1422 * __dtb_testcases_begin[] and __dtb_testcases_end[] are magically
1423 * created by cmd_dt_S_dtb in scripts/Makefile.lib
1425 extern uint8_t __dtb_testcases_begin[];
1426 extern uint8_t __dtb_testcases_end[];
1427 const int size = __dtb_testcases_end - __dtb_testcases_begin;
1431 pr_warn("%s: No testcase data to attach; not running tests\n",
1437 unittest_data = kmemdup(__dtb_testcases_begin, size, GFP_KERNEL);
1441 of_fdt_unflatten_tree(unittest_data, NULL, &unittest_data_node);
1442 if (!unittest_data_node) {
1443 pr_warn("%s: No tree to attach; not running tests\n", __func__);
1444 kfree(unittest_data);
1449 * This lock normally encloses of_resolve_phandles()
1451 of_overlay_mutex_lock();
1453 rc = of_resolve_phandles(unittest_data_node);
1455 pr_err("%s: Failed to resolve phandles (rc=%i)\n", __func__, rc);
1456 of_overlay_mutex_unlock();
1461 of_root = unittest_data_node;
1462 for_each_of_allnodes(np)
1463 __of_attach_node_sysfs(np);
1464 of_aliases = of_find_node_by_path("/aliases");
1465 of_chosen = of_find_node_by_path("/chosen");
1466 of_overlay_mutex_unlock();
1470 EXPECT_BEGIN(KERN_INFO,
1471 "Duplicate name in testcase-data, renamed to \"duplicate-name#1\"");
1473 /* attach the sub-tree to live tree */
1474 np = unittest_data_node->child;
1476 struct device_node *next = np->sibling;
1478 np->parent = of_root;
1479 attach_node_and_children(np);
1483 EXPECT_END(KERN_INFO,
1484 "Duplicate name in testcase-data, renamed to \"duplicate-name#1\"");
1486 of_overlay_mutex_unlock();
1491 #ifdef CONFIG_OF_OVERLAY
1492 static int __init overlay_data_apply(const char *overlay_name, int *overlay_id);
1494 static int unittest_probe(struct platform_device *pdev)
1496 struct device *dev = &pdev->dev;
1497 struct device_node *np = dev->of_node;
1500 dev_err(dev, "No OF data for device\n");
1505 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
1507 of_platform_populate(np, NULL, NULL, &pdev->dev);
1512 static int unittest_remove(struct platform_device *pdev)
1514 struct device *dev = &pdev->dev;
1515 struct device_node *np = dev->of_node;
1517 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
1521 static const struct of_device_id unittest_match[] = {
1522 { .compatible = "unittest", },
1526 static struct platform_driver unittest_driver = {
1527 .probe = unittest_probe,
1528 .remove = unittest_remove,
1531 .of_match_table = of_match_ptr(unittest_match),
1535 /* get the platform device instantiated at the path */
1536 static struct platform_device *of_path_to_platform_device(const char *path)
1538 struct device_node *np;
1539 struct platform_device *pdev;
1541 np = of_find_node_by_path(path);
1545 pdev = of_find_device_by_node(np);
1551 /* find out if a platform device exists at that path */
1552 static int of_path_platform_device_exists(const char *path)
1554 struct platform_device *pdev;
1556 pdev = of_path_to_platform_device(path);
1557 platform_device_put(pdev);
1558 return pdev != NULL;
1561 #ifdef CONFIG_OF_GPIO
1563 struct unittest_gpio_dev {
1564 struct gpio_chip chip;
1567 static int unittest_gpio_chip_request_count;
1568 static int unittest_gpio_probe_count;
1569 static int unittest_gpio_probe_pass_count;
1571 static int unittest_gpio_chip_request(struct gpio_chip *chip, unsigned int offset)
1573 unittest_gpio_chip_request_count++;
1575 pr_debug("%s(): %s %d %d\n", __func__, chip->label, offset,
1576 unittest_gpio_chip_request_count);
1580 static int unittest_gpio_probe(struct platform_device *pdev)
1582 struct unittest_gpio_dev *devptr;
1585 unittest_gpio_probe_count++;
1587 devptr = kzalloc(sizeof(*devptr), GFP_KERNEL);
1591 platform_set_drvdata(pdev, devptr);
1593 devptr->chip.of_node = pdev->dev.of_node;
1594 devptr->chip.label = "of-unittest-gpio";
1595 devptr->chip.base = -1; /* dynamic allocation */
1596 devptr->chip.ngpio = 5;
1597 devptr->chip.request = unittest_gpio_chip_request;
1599 ret = gpiochip_add_data(&devptr->chip, NULL);
1602 "gpiochip_add_data() for node @%pOF failed, ret = %d\n", devptr->chip.of_node, ret);
1605 unittest_gpio_probe_pass_count++;
1609 static int unittest_gpio_remove(struct platform_device *pdev)
1611 struct unittest_gpio_dev *gdev = platform_get_drvdata(pdev);
1612 struct device *dev = &pdev->dev;
1613 struct device_node *np = pdev->dev.of_node;
1615 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
1620 if (gdev->chip.base != -1)
1621 gpiochip_remove(&gdev->chip);
1623 platform_set_drvdata(pdev, NULL);
1629 static const struct of_device_id unittest_gpio_id[] = {
1630 { .compatible = "unittest-gpio", },
1634 static struct platform_driver unittest_gpio_driver = {
1635 .probe = unittest_gpio_probe,
1636 .remove = unittest_gpio_remove,
1638 .name = "unittest-gpio",
1639 .of_match_table = of_match_ptr(unittest_gpio_id),
1643 static void __init of_unittest_overlay_gpio(void)
1645 int chip_request_count;
1646 int probe_pass_count;
1650 * tests: apply overlays before registering driver
1651 * Similar to installing a driver as a module, the
1652 * driver is registered after applying the overlays.
1654 * The overlays are applied by overlay_data_apply()
1655 * instead of of_unittest_apply_overlay() so that they
1656 * will not be tracked. Thus they will not be removed
1657 * by of_unittest_destroy_tracked_overlays().
1659 * - apply overlay_gpio_01
1660 * - apply overlay_gpio_02a
1661 * - apply overlay_gpio_02b
1664 * register driver will result in
1665 * - probe and processing gpio hog for overlay_gpio_01
1666 * - probe for overlay_gpio_02a
1667 * - processing gpio for overlay_gpio_02b
1670 probe_pass_count = unittest_gpio_probe_pass_count;
1671 chip_request_count = unittest_gpio_chip_request_count;
1674 * overlay_gpio_01 contains gpio node and child gpio hog node
1675 * overlay_gpio_02a contains gpio node
1676 * overlay_gpio_02b contains child gpio hog node
1679 unittest(overlay_data_apply("overlay_gpio_01", NULL),
1680 "Adding overlay 'overlay_gpio_01' failed\n");
1682 unittest(overlay_data_apply("overlay_gpio_02a", NULL),
1683 "Adding overlay 'overlay_gpio_02a' failed\n");
1685 unittest(overlay_data_apply("overlay_gpio_02b", NULL),
1686 "Adding overlay 'overlay_gpio_02b' failed\n");
1689 * messages are the result of the probes, after the
1690 * driver is registered
1693 EXPECT_BEGIN(KERN_INFO,
1694 "gpio-<<int>> (line-B-input): hogged as input\n");
1696 EXPECT_BEGIN(KERN_INFO,
1697 "gpio-<<int>> (line-A-input): hogged as input\n");
1699 ret = platform_driver_register(&unittest_gpio_driver);
1700 if (unittest(ret == 0, "could not register unittest gpio driver\n"))
1703 EXPECT_END(KERN_INFO,
1704 "gpio-<<int>> (line-A-input): hogged as input\n");
1705 EXPECT_END(KERN_INFO,
1706 "gpio-<<int>> (line-B-input): hogged as input\n");
1708 unittest(probe_pass_count + 2 == unittest_gpio_probe_pass_count,
1709 "unittest_gpio_probe() failed or not called\n");
1711 unittest(chip_request_count + 2 == unittest_gpio_chip_request_count,
1712 "unittest_gpio_chip_request() called %d times (expected 1 time)\n",
1713 unittest_gpio_chip_request_count - chip_request_count);
1716 * tests: apply overlays after registering driver
1718 * Similar to a driver built-in to the kernel, the
1719 * driver is registered before applying the overlays.
1721 * overlay_gpio_03 contains gpio node and child gpio hog node
1723 * - apply overlay_gpio_03
1725 * apply overlay will result in
1726 * - probe and processing gpio hog.
1729 probe_pass_count = unittest_gpio_probe_pass_count;
1730 chip_request_count = unittest_gpio_chip_request_count;
1732 EXPECT_BEGIN(KERN_INFO,
1733 "gpio-<<int>> (line-D-input): hogged as input\n");
1735 /* overlay_gpio_03 contains gpio node and child gpio hog node */
1737 unittest(overlay_data_apply("overlay_gpio_03", NULL),
1738 "Adding overlay 'overlay_gpio_03' failed\n");
1740 EXPECT_END(KERN_INFO,
1741 "gpio-<<int>> (line-D-input): hogged as input\n");
1743 unittest(probe_pass_count + 1 == unittest_gpio_probe_pass_count,
1744 "unittest_gpio_probe() failed or not called\n");
1746 unittest(chip_request_count + 1 == unittest_gpio_chip_request_count,
1747 "unittest_gpio_chip_request() called %d times (expected 1 time)\n",
1748 unittest_gpio_chip_request_count - chip_request_count);
1751 * overlay_gpio_04a contains gpio node
1753 * - apply overlay_gpio_04a
1755 * apply the overlay will result in
1756 * - probe for overlay_gpio_04a
1759 probe_pass_count = unittest_gpio_probe_pass_count;
1760 chip_request_count = unittest_gpio_chip_request_count;
1762 /* overlay_gpio_04a contains gpio node */
1764 unittest(overlay_data_apply("overlay_gpio_04a", NULL),
1765 "Adding overlay 'overlay_gpio_04a' failed\n");
1767 unittest(probe_pass_count + 1 == unittest_gpio_probe_pass_count,
1768 "unittest_gpio_probe() failed or not called\n");
1771 * overlay_gpio_04b contains child gpio hog node
1773 * - apply overlay_gpio_04b
1775 * apply the overlay will result in
1776 * - processing gpio for overlay_gpio_04b
1779 EXPECT_BEGIN(KERN_INFO,
1780 "gpio-<<int>> (line-C-input): hogged as input\n");
1782 /* overlay_gpio_04b contains child gpio hog node */
1784 unittest(overlay_data_apply("overlay_gpio_04b", NULL),
1785 "Adding overlay 'overlay_gpio_04b' failed\n");
1787 EXPECT_END(KERN_INFO,
1788 "gpio-<<int>> (line-C-input): hogged as input\n");
1790 unittest(chip_request_count + 1 == unittest_gpio_chip_request_count,
1791 "unittest_gpio_chip_request() called %d times (expected 1 time)\n",
1792 unittest_gpio_chip_request_count - chip_request_count);
1797 static void __init of_unittest_overlay_gpio(void)
1804 #if IS_BUILTIN(CONFIG_I2C)
1806 /* get the i2c client device instantiated at the path */
1807 static struct i2c_client *of_path_to_i2c_client(const char *path)
1809 struct device_node *np;
1810 struct i2c_client *client;
1812 np = of_find_node_by_path(path);
1816 client = of_find_i2c_device_by_node(np);
1822 /* find out if a i2c client device exists at that path */
1823 static int of_path_i2c_client_exists(const char *path)
1825 struct i2c_client *client;
1827 client = of_path_to_i2c_client(path);
1829 put_device(&client->dev);
1830 return client != NULL;
1833 static int of_path_i2c_client_exists(const char *path)
1844 static int of_path_device_type_exists(const char *path,
1845 enum overlay_type ovtype)
1849 return of_path_platform_device_exists(path);
1851 return of_path_i2c_client_exists(path);
1856 static const char *unittest_path(int nr, enum overlay_type ovtype)
1859 static char buf[256];
1863 base = "/testcase-data/overlay-node/test-bus";
1866 base = "/testcase-data/overlay-node/test-bus/i2c-test-bus";
1872 snprintf(buf, sizeof(buf) - 1, "%s/test-unittest%d", base, nr);
1873 buf[sizeof(buf) - 1] = '\0';
1877 static int of_unittest_device_exists(int unittest_nr, enum overlay_type ovtype)
1881 path = unittest_path(unittest_nr, ovtype);
1885 return of_path_platform_device_exists(path);
1887 return of_path_i2c_client_exists(path);
1892 static const char *overlay_name_from_nr(int nr)
1894 static char buf[256];
1896 snprintf(buf, sizeof(buf) - 1,
1898 buf[sizeof(buf) - 1] = '\0';
1903 static const char *bus_path = "/testcase-data/overlay-node/test-bus";
1905 /* FIXME: it is NOT guaranteed that overlay ids are assigned in sequence */
1907 #define MAX_UNITTEST_OVERLAYS 256
1908 static unsigned long overlay_id_bits[BITS_TO_LONGS(MAX_UNITTEST_OVERLAYS)];
1909 static int overlay_first_id = -1;
1911 static long of_unittest_overlay_tracked(int id)
1913 if (WARN_ON(id >= MAX_UNITTEST_OVERLAYS))
1915 return overlay_id_bits[BIT_WORD(id)] & BIT_MASK(id);
1918 static void of_unittest_track_overlay(int id)
1920 if (overlay_first_id < 0)
1921 overlay_first_id = id;
1922 id -= overlay_first_id;
1924 if (WARN_ON(id >= MAX_UNITTEST_OVERLAYS))
1926 overlay_id_bits[BIT_WORD(id)] |= BIT_MASK(id);
1929 static void of_unittest_untrack_overlay(int id)
1931 if (overlay_first_id < 0)
1933 id -= overlay_first_id;
1934 if (WARN_ON(id >= MAX_UNITTEST_OVERLAYS))
1936 overlay_id_bits[BIT_WORD(id)] &= ~BIT_MASK(id);
1939 static void of_unittest_destroy_tracked_overlays(void)
1941 int id, ret, defers, ovcs_id;
1943 if (overlay_first_id < 0)
1946 /* try until no defers */
1949 /* remove in reverse order */
1950 for (id = MAX_UNITTEST_OVERLAYS - 1; id >= 0; id--) {
1951 if (!of_unittest_overlay_tracked(id))
1954 ovcs_id = id + overlay_first_id;
1955 ret = of_overlay_remove(&ovcs_id);
1956 if (ret == -ENODEV) {
1957 pr_warn("%s: no overlay to destroy for #%d\n",
1958 __func__, id + overlay_first_id);
1963 pr_warn("%s: overlay destroy failed for #%d\n",
1964 __func__, id + overlay_first_id);
1968 of_unittest_untrack_overlay(id);
1970 } while (defers > 0);
1973 static int __init of_unittest_apply_overlay(int overlay_nr, int *overlay_id)
1975 const char *overlay_name;
1977 overlay_name = overlay_name_from_nr(overlay_nr);
1979 if (!overlay_data_apply(overlay_name, overlay_id)) {
1980 unittest(0, "could not apply overlay \"%s\"\n",
1984 of_unittest_track_overlay(*overlay_id);
1989 /* apply an overlay while checking before and after states */
1990 static int __init of_unittest_apply_overlay_check(int overlay_nr,
1991 int unittest_nr, int before, int after,
1992 enum overlay_type ovtype)
1996 /* unittest device must not be in before state */
1997 if (of_unittest_device_exists(unittest_nr, ovtype) != before) {
1998 unittest(0, "%s with device @\"%s\" %s\n",
1999 overlay_name_from_nr(overlay_nr),
2000 unittest_path(unittest_nr, ovtype),
2001 !before ? "enabled" : "disabled");
2006 ret = of_unittest_apply_overlay(overlay_nr, &ovcs_id);
2008 /* of_unittest_apply_overlay already called unittest() */
2012 /* unittest device must be to set to after state */
2013 if (of_unittest_device_exists(unittest_nr, ovtype) != after) {
2014 unittest(0, "%s failed to create @\"%s\" %s\n",
2015 overlay_name_from_nr(overlay_nr),
2016 unittest_path(unittest_nr, ovtype),
2017 !after ? "enabled" : "disabled");
2024 /* apply an overlay and then revert it while checking before, after states */
2025 static int __init of_unittest_apply_revert_overlay_check(int overlay_nr,
2026 int unittest_nr, int before, int after,
2027 enum overlay_type ovtype)
2029 int ret, ovcs_id, save_id;
2031 /* unittest device must be in before state */
2032 if (of_unittest_device_exists(unittest_nr, ovtype) != before) {
2033 unittest(0, "%s with device @\"%s\" %s\n",
2034 overlay_name_from_nr(overlay_nr),
2035 unittest_path(unittest_nr, ovtype),
2036 !before ? "enabled" : "disabled");
2040 /* apply the overlay */
2042 ret = of_unittest_apply_overlay(overlay_nr, &ovcs_id);
2044 /* of_unittest_apply_overlay already called unittest() */
2048 /* unittest device must be in after state */
2049 if (of_unittest_device_exists(unittest_nr, ovtype) != after) {
2050 unittest(0, "%s failed to create @\"%s\" %s\n",
2051 overlay_name_from_nr(overlay_nr),
2052 unittest_path(unittest_nr, ovtype),
2053 !after ? "enabled" : "disabled");
2058 ret = of_overlay_remove(&ovcs_id);
2060 unittest(0, "%s failed to be destroyed @\"%s\"\n",
2061 overlay_name_from_nr(overlay_nr),
2062 unittest_path(unittest_nr, ovtype));
2065 of_unittest_untrack_overlay(save_id);
2067 /* unittest device must be again in before state */
2068 if (of_unittest_device_exists(unittest_nr, PDEV_OVERLAY) != before) {
2069 unittest(0, "%s with device @\"%s\" %s\n",
2070 overlay_name_from_nr(overlay_nr),
2071 unittest_path(unittest_nr, ovtype),
2072 !before ? "enabled" : "disabled");
2079 /* test activation of device */
2080 static void __init of_unittest_overlay_0(void)
2084 EXPECT_BEGIN(KERN_INFO,
2085 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest0/status");
2087 /* device should enable */
2088 ret = of_unittest_apply_overlay_check(0, 0, 0, 1, PDEV_OVERLAY);
2090 EXPECT_END(KERN_INFO,
2091 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest0/status");
2096 unittest(1, "overlay test %d passed\n", 0);
2099 /* test deactivation of device */
2100 static void __init of_unittest_overlay_1(void)
2104 EXPECT_BEGIN(KERN_INFO,
2105 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest1/status");
2107 /* device should disable */
2108 ret = of_unittest_apply_overlay_check(1, 1, 1, 0, PDEV_OVERLAY);
2110 EXPECT_END(KERN_INFO,
2111 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest1/status");
2116 unittest(1, "overlay test %d passed\n", 1);
2120 /* test activation of device */
2121 static void __init of_unittest_overlay_2(void)
2125 EXPECT_BEGIN(KERN_INFO,
2126 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest2/status");
2128 /* device should enable */
2129 ret = of_unittest_apply_overlay_check(2, 2, 0, 1, PDEV_OVERLAY);
2131 EXPECT_END(KERN_INFO,
2132 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest2/status");
2136 unittest(1, "overlay test %d passed\n", 2);
2139 /* test deactivation of device */
2140 static void __init of_unittest_overlay_3(void)
2144 EXPECT_BEGIN(KERN_INFO,
2145 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest3/status");
2147 /* device should disable */
2148 ret = of_unittest_apply_overlay_check(3, 3, 1, 0, PDEV_OVERLAY);
2150 EXPECT_END(KERN_INFO,
2151 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest3/status");
2156 unittest(1, "overlay test %d passed\n", 3);
2159 /* test activation of a full device node */
2160 static void __init of_unittest_overlay_4(void)
2162 /* device should disable */
2163 if (of_unittest_apply_overlay_check(4, 4, 0, 1, PDEV_OVERLAY))
2166 unittest(1, "overlay test %d passed\n", 4);
2169 /* test overlay apply/revert sequence */
2170 static void __init of_unittest_overlay_5(void)
2174 EXPECT_BEGIN(KERN_INFO,
2175 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest5/status");
2177 /* device should disable */
2178 ret = of_unittest_apply_revert_overlay_check(5, 5, 0, 1, PDEV_OVERLAY);
2180 EXPECT_END(KERN_INFO,
2181 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest5/status");
2186 unittest(1, "overlay test %d passed\n", 5);
2189 /* test overlay application in sequence */
2190 static void __init of_unittest_overlay_6(void)
2192 int i, ov_id[2], ovcs_id;
2193 int overlay_nr = 6, unittest_nr = 6;
2194 int before = 0, after = 1;
2195 const char *overlay_name;
2199 /* unittest device must be in before state */
2200 for (i = 0; i < 2; i++) {
2201 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY)
2203 unittest(0, "%s with device @\"%s\" %s\n",
2204 overlay_name_from_nr(overlay_nr + i),
2205 unittest_path(unittest_nr + i,
2207 !before ? "enabled" : "disabled");
2212 /* apply the overlays */
2214 EXPECT_BEGIN(KERN_INFO,
2215 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest6/status");
2217 overlay_name = overlay_name_from_nr(overlay_nr + 0);
2219 ret = overlay_data_apply(overlay_name, &ovcs_id);
2222 unittest(0, "could not apply overlay \"%s\"\n", overlay_name);
2226 of_unittest_track_overlay(ov_id[0]);
2228 EXPECT_END(KERN_INFO,
2229 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest6/status");
2231 EXPECT_BEGIN(KERN_INFO,
2232 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest7/status");
2234 overlay_name = overlay_name_from_nr(overlay_nr + 1);
2236 ret = overlay_data_apply(overlay_name, &ovcs_id);
2239 unittest(0, "could not apply overlay \"%s\"\n", overlay_name);
2243 of_unittest_track_overlay(ov_id[1]);
2245 EXPECT_END(KERN_INFO,
2246 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest7/status");
2249 for (i = 0; i < 2; i++) {
2250 /* unittest device must be in after state */
2251 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY)
2253 unittest(0, "overlay @\"%s\" failed @\"%s\" %s\n",
2254 overlay_name_from_nr(overlay_nr + i),
2255 unittest_path(unittest_nr + i,
2257 !after ? "enabled" : "disabled");
2262 for (i = 1; i >= 0; i--) {
2264 if (of_overlay_remove(&ovcs_id)) {
2265 unittest(0, "%s failed destroy @\"%s\"\n",
2266 overlay_name_from_nr(overlay_nr + i),
2267 unittest_path(unittest_nr + i,
2271 of_unittest_untrack_overlay(ov_id[i]);
2274 for (i = 0; i < 2; i++) {
2275 /* unittest device must be again in before state */
2276 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY)
2278 unittest(0, "%s with device @\"%s\" %s\n",
2279 overlay_name_from_nr(overlay_nr + i),
2280 unittest_path(unittest_nr + i,
2282 !before ? "enabled" : "disabled");
2287 unittest(1, "overlay test %d passed\n", 6);
2291 /* test overlay application in sequence */
2292 static void __init of_unittest_overlay_8(void)
2294 int i, ov_id[2], ovcs_id;
2295 int overlay_nr = 8, unittest_nr = 8;
2296 const char *overlay_name;
2299 /* we don't care about device state in this test */
2301 EXPECT_BEGIN(KERN_INFO,
2302 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/status");
2304 overlay_name = overlay_name_from_nr(overlay_nr + 0);
2306 ret = overlay_data_apply(overlay_name, &ovcs_id);
2308 unittest(0, "could not apply overlay \"%s\"\n", overlay_name);
2310 EXPECT_END(KERN_INFO,
2311 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/status");
2317 of_unittest_track_overlay(ov_id[0]);
2319 overlay_name = overlay_name_from_nr(overlay_nr + 1);
2321 EXPECT_BEGIN(KERN_INFO,
2322 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/property-foo");
2324 /* apply the overlays */
2325 ret = overlay_data_apply(overlay_name, &ovcs_id);
2327 EXPECT_END(KERN_INFO,
2328 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/property-foo");
2331 unittest(0, "could not apply overlay \"%s\"\n", overlay_name);
2336 of_unittest_track_overlay(ov_id[1]);
2338 /* now try to remove first overlay (it should fail) */
2341 EXPECT_BEGIN(KERN_INFO,
2342 "OF: overlay: node_overlaps_later_cs: #6 overlaps with #7 @/testcase-data/overlay-node/test-bus/test-unittest8");
2344 EXPECT_BEGIN(KERN_INFO,
2345 "OF: overlay: overlay #6 is not topmost");
2347 ret = of_overlay_remove(&ovcs_id);
2349 EXPECT_END(KERN_INFO,
2350 "OF: overlay: overlay #6 is not topmost");
2352 EXPECT_END(KERN_INFO,
2353 "OF: overlay: node_overlaps_later_cs: #6 overlaps with #7 @/testcase-data/overlay-node/test-bus/test-unittest8");
2356 unittest(0, "%s was destroyed @\"%s\"\n",
2357 overlay_name_from_nr(overlay_nr + 0),
2358 unittest_path(unittest_nr,
2363 /* removing them in order should work */
2364 for (i = 1; i >= 0; i--) {
2366 if (of_overlay_remove(&ovcs_id)) {
2367 unittest(0, "%s not destroyed @\"%s\"\n",
2368 overlay_name_from_nr(overlay_nr + i),
2369 unittest_path(unittest_nr,
2373 of_unittest_untrack_overlay(ov_id[i]);
2376 unittest(1, "overlay test %d passed\n", 8);
2379 /* test insertion of a bus with parent devices */
2380 static void __init of_unittest_overlay_10(void)
2385 /* device should disable */
2386 ret = of_unittest_apply_overlay_check(10, 10, 0, 1, PDEV_OVERLAY);
2388 if (unittest(ret == 0,
2389 "overlay test %d failed; overlay application\n", 10))
2392 child_path = kasprintf(GFP_KERNEL, "%s/test-unittest101",
2393 unittest_path(10, PDEV_OVERLAY));
2394 if (unittest(child_path, "overlay test %d failed; kasprintf\n", 10))
2397 ret = of_path_device_type_exists(child_path, PDEV_OVERLAY);
2400 unittest(ret, "overlay test %d failed; no child device\n", 10);
2403 /* test insertion of a bus with parent devices (and revert) */
2404 static void __init of_unittest_overlay_11(void)
2408 /* device should disable */
2409 ret = of_unittest_apply_revert_overlay_check(11, 11, 0, 1,
2412 unittest(ret == 0, "overlay test %d failed; overlay apply\n", 11);
2415 #if IS_BUILTIN(CONFIG_I2C) && IS_ENABLED(CONFIG_OF_OVERLAY)
2417 struct unittest_i2c_bus_data {
2418 struct platform_device *pdev;
2419 struct i2c_adapter adap;
2422 static int unittest_i2c_master_xfer(struct i2c_adapter *adap,
2423 struct i2c_msg *msgs, int num)
2425 struct unittest_i2c_bus_data *std = i2c_get_adapdata(adap);
2432 static u32 unittest_i2c_functionality(struct i2c_adapter *adap)
2434 return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
2437 static const struct i2c_algorithm unittest_i2c_algo = {
2438 .master_xfer = unittest_i2c_master_xfer,
2439 .functionality = unittest_i2c_functionality,
2442 static int unittest_i2c_bus_probe(struct platform_device *pdev)
2444 struct device *dev = &pdev->dev;
2445 struct device_node *np = dev->of_node;
2446 struct unittest_i2c_bus_data *std;
2447 struct i2c_adapter *adap;
2451 dev_err(dev, "No OF data for device\n");
2456 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2458 std = devm_kzalloc(dev, sizeof(*std), GFP_KERNEL);
2462 /* link them together */
2464 platform_set_drvdata(pdev, std);
2467 i2c_set_adapdata(adap, std);
2469 strlcpy(adap->name, pdev->name, sizeof(adap->name));
2470 adap->class = I2C_CLASS_DEPRECATED;
2471 adap->algo = &unittest_i2c_algo;
2472 adap->dev.parent = dev;
2473 adap->dev.of_node = dev->of_node;
2474 adap->timeout = 5 * HZ;
2477 ret = i2c_add_numbered_adapter(adap);
2479 dev_err(dev, "Failed to add I2C adapter\n");
2486 static int unittest_i2c_bus_remove(struct platform_device *pdev)
2488 struct device *dev = &pdev->dev;
2489 struct device_node *np = dev->of_node;
2490 struct unittest_i2c_bus_data *std = platform_get_drvdata(pdev);
2492 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2493 i2c_del_adapter(&std->adap);
2498 static const struct of_device_id unittest_i2c_bus_match[] = {
2499 { .compatible = "unittest-i2c-bus", },
2503 static struct platform_driver unittest_i2c_bus_driver = {
2504 .probe = unittest_i2c_bus_probe,
2505 .remove = unittest_i2c_bus_remove,
2507 .name = "unittest-i2c-bus",
2508 .of_match_table = of_match_ptr(unittest_i2c_bus_match),
2512 static int unittest_i2c_dev_probe(struct i2c_client *client,
2513 const struct i2c_device_id *id)
2515 struct device *dev = &client->dev;
2516 struct device_node *np = client->dev.of_node;
2519 dev_err(dev, "No OF node\n");
2523 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2528 static int unittest_i2c_dev_remove(struct i2c_client *client)
2530 struct device *dev = &client->dev;
2531 struct device_node *np = client->dev.of_node;
2533 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2537 static const struct i2c_device_id unittest_i2c_dev_id[] = {
2538 { .name = "unittest-i2c-dev" },
2542 static struct i2c_driver unittest_i2c_dev_driver = {
2544 .name = "unittest-i2c-dev",
2546 .probe = unittest_i2c_dev_probe,
2547 .remove = unittest_i2c_dev_remove,
2548 .id_table = unittest_i2c_dev_id,
2551 #if IS_BUILTIN(CONFIG_I2C_MUX)
2553 static int unittest_i2c_mux_select_chan(struct i2c_mux_core *muxc, u32 chan)
2558 static int unittest_i2c_mux_probe(struct i2c_client *client,
2559 const struct i2c_device_id *id)
2562 struct device *dev = &client->dev;
2563 struct i2c_adapter *adap = client->adapter;
2564 struct device_node *np = client->dev.of_node, *child;
2565 struct i2c_mux_core *muxc;
2568 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2571 dev_err(dev, "No OF node\n");
2576 for_each_child_of_node(np, child) {
2577 if (of_property_read_u32(child, "reg", ®))
2579 if (max_reg == (u32)-1 || reg > max_reg)
2582 nchans = max_reg == (u32)-1 ? 0 : max_reg + 1;
2584 dev_err(dev, "No channels\n");
2588 muxc = i2c_mux_alloc(adap, dev, nchans, 0, 0,
2589 unittest_i2c_mux_select_chan, NULL);
2592 for (i = 0; i < nchans; i++) {
2593 if (i2c_mux_add_adapter(muxc, 0, i, 0)) {
2594 dev_err(dev, "Failed to register mux #%d\n", i);
2595 i2c_mux_del_adapters(muxc);
2600 i2c_set_clientdata(client, muxc);
2605 static int unittest_i2c_mux_remove(struct i2c_client *client)
2607 struct device *dev = &client->dev;
2608 struct device_node *np = client->dev.of_node;
2609 struct i2c_mux_core *muxc = i2c_get_clientdata(client);
2611 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2612 i2c_mux_del_adapters(muxc);
2616 static const struct i2c_device_id unittest_i2c_mux_id[] = {
2617 { .name = "unittest-i2c-mux" },
2621 static struct i2c_driver unittest_i2c_mux_driver = {
2623 .name = "unittest-i2c-mux",
2625 .probe = unittest_i2c_mux_probe,
2626 .remove = unittest_i2c_mux_remove,
2627 .id_table = unittest_i2c_mux_id,
2632 static int of_unittest_overlay_i2c_init(void)
2636 ret = i2c_add_driver(&unittest_i2c_dev_driver);
2637 if (unittest(ret == 0,
2638 "could not register unittest i2c device driver\n"))
2641 ret = platform_driver_register(&unittest_i2c_bus_driver);
2643 if (unittest(ret == 0,
2644 "could not register unittest i2c bus driver\n"))
2647 #if IS_BUILTIN(CONFIG_I2C_MUX)
2649 EXPECT_BEGIN(KERN_INFO,
2650 "i2c i2c-1: Added multiplexed i2c bus 2");
2652 ret = i2c_add_driver(&unittest_i2c_mux_driver);
2654 EXPECT_END(KERN_INFO,
2655 "i2c i2c-1: Added multiplexed i2c bus 2");
2657 if (unittest(ret == 0,
2658 "could not register unittest i2c mux driver\n"))
2665 static void of_unittest_overlay_i2c_cleanup(void)
2667 #if IS_BUILTIN(CONFIG_I2C_MUX)
2668 i2c_del_driver(&unittest_i2c_mux_driver);
2670 platform_driver_unregister(&unittest_i2c_bus_driver);
2671 i2c_del_driver(&unittest_i2c_dev_driver);
2674 static void __init of_unittest_overlay_i2c_12(void)
2678 /* device should enable */
2679 EXPECT_BEGIN(KERN_INFO,
2680 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest12/status");
2682 ret = of_unittest_apply_overlay_check(12, 12, 0, 1, I2C_OVERLAY);
2684 EXPECT_END(KERN_INFO,
2685 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest12/status");
2690 unittest(1, "overlay test %d passed\n", 12);
2693 /* test deactivation of device */
2694 static void __init of_unittest_overlay_i2c_13(void)
2698 EXPECT_BEGIN(KERN_INFO,
2699 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest13/status");
2701 /* device should disable */
2702 ret = of_unittest_apply_overlay_check(13, 13, 1, 0, I2C_OVERLAY);
2704 EXPECT_END(KERN_INFO,
2705 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest13/status");
2710 unittest(1, "overlay test %d passed\n", 13);
2713 /* just check for i2c mux existence */
2714 static void of_unittest_overlay_i2c_14(void)
2718 static void __init of_unittest_overlay_i2c_15(void)
2722 /* device should enable */
2723 EXPECT_BEGIN(KERN_INFO,
2724 "i2c i2c-1: Added multiplexed i2c bus 3");
2726 ret = of_unittest_apply_overlay_check(15, 15, 0, 1, I2C_OVERLAY);
2728 EXPECT_END(KERN_INFO,
2729 "i2c i2c-1: Added multiplexed i2c bus 3");
2734 unittest(1, "overlay test %d passed\n", 15);
2739 static inline void of_unittest_overlay_i2c_14(void) { }
2740 static inline void of_unittest_overlay_i2c_15(void) { }
2744 static void __init of_unittest_overlay(void)
2746 struct device_node *bus_np = NULL;
2748 if (platform_driver_register(&unittest_driver)) {
2749 unittest(0, "could not register unittest driver\n");
2753 bus_np = of_find_node_by_path(bus_path);
2754 if (bus_np == NULL) {
2755 unittest(0, "could not find bus_path \"%s\"\n", bus_path);
2759 if (of_platform_default_populate(bus_np, NULL, NULL)) {
2760 unittest(0, "could not populate bus @ \"%s\"\n", bus_path);
2764 if (!of_unittest_device_exists(100, PDEV_OVERLAY)) {
2765 unittest(0, "could not find unittest0 @ \"%s\"\n",
2766 unittest_path(100, PDEV_OVERLAY));
2770 if (of_unittest_device_exists(101, PDEV_OVERLAY)) {
2771 unittest(0, "unittest1 @ \"%s\" should not exist\n",
2772 unittest_path(101, PDEV_OVERLAY));
2776 unittest(1, "basic infrastructure of overlays passed");
2778 /* tests in sequence */
2779 of_unittest_overlay_0();
2780 of_unittest_overlay_1();
2781 of_unittest_overlay_2();
2782 of_unittest_overlay_3();
2783 of_unittest_overlay_4();
2784 of_unittest_overlay_5();
2785 of_unittest_overlay_6();
2786 of_unittest_overlay_8();
2788 of_unittest_overlay_10();
2789 of_unittest_overlay_11();
2791 #if IS_BUILTIN(CONFIG_I2C)
2792 if (unittest(of_unittest_overlay_i2c_init() == 0, "i2c init failed\n"))
2795 of_unittest_overlay_i2c_12();
2796 of_unittest_overlay_i2c_13();
2797 of_unittest_overlay_i2c_14();
2798 of_unittest_overlay_i2c_15();
2800 of_unittest_overlay_i2c_cleanup();
2803 of_unittest_overlay_gpio();
2805 of_unittest_destroy_tracked_overlays();
2808 of_node_put(bus_np);
2812 static inline void __init of_unittest_overlay(void) { }
2815 #ifdef CONFIG_OF_OVERLAY
2818 * __dtb_ot_begin[] and __dtb_ot_end[] are created by cmd_dt_S_dtb
2819 * in scripts/Makefile.lib
2822 #define OVERLAY_INFO_EXTERN(name) \
2823 extern uint8_t __dtb_##name##_begin[]; \
2824 extern uint8_t __dtb_##name##_end[]
2826 #define OVERLAY_INFO(overlay_name, expected) \
2827 { .dtb_begin = __dtb_##overlay_name##_begin, \
2828 .dtb_end = __dtb_##overlay_name##_end, \
2829 .expected_result = expected, \
2830 .name = #overlay_name, \
2833 struct overlay_info {
2836 int expected_result;
2841 OVERLAY_INFO_EXTERN(overlay_base);
2842 OVERLAY_INFO_EXTERN(overlay);
2843 OVERLAY_INFO_EXTERN(overlay_0);
2844 OVERLAY_INFO_EXTERN(overlay_1);
2845 OVERLAY_INFO_EXTERN(overlay_2);
2846 OVERLAY_INFO_EXTERN(overlay_3);
2847 OVERLAY_INFO_EXTERN(overlay_4);
2848 OVERLAY_INFO_EXTERN(overlay_5);
2849 OVERLAY_INFO_EXTERN(overlay_6);
2850 OVERLAY_INFO_EXTERN(overlay_7);
2851 OVERLAY_INFO_EXTERN(overlay_8);
2852 OVERLAY_INFO_EXTERN(overlay_9);
2853 OVERLAY_INFO_EXTERN(overlay_10);
2854 OVERLAY_INFO_EXTERN(overlay_11);
2855 OVERLAY_INFO_EXTERN(overlay_12);
2856 OVERLAY_INFO_EXTERN(overlay_13);
2857 OVERLAY_INFO_EXTERN(overlay_15);
2858 OVERLAY_INFO_EXTERN(overlay_gpio_01);
2859 OVERLAY_INFO_EXTERN(overlay_gpio_02a);
2860 OVERLAY_INFO_EXTERN(overlay_gpio_02b);
2861 OVERLAY_INFO_EXTERN(overlay_gpio_03);
2862 OVERLAY_INFO_EXTERN(overlay_gpio_04a);
2863 OVERLAY_INFO_EXTERN(overlay_gpio_04b);
2864 OVERLAY_INFO_EXTERN(overlay_bad_add_dup_node);
2865 OVERLAY_INFO_EXTERN(overlay_bad_add_dup_prop);
2866 OVERLAY_INFO_EXTERN(overlay_bad_phandle);
2867 OVERLAY_INFO_EXTERN(overlay_bad_symbol);
2869 /* entries found by name */
2870 static struct overlay_info overlays[] = {
2871 OVERLAY_INFO(overlay_base, -9999),
2872 OVERLAY_INFO(overlay, 0),
2873 OVERLAY_INFO(overlay_0, 0),
2874 OVERLAY_INFO(overlay_1, 0),
2875 OVERLAY_INFO(overlay_2, 0),
2876 OVERLAY_INFO(overlay_3, 0),
2877 OVERLAY_INFO(overlay_4, 0),
2878 OVERLAY_INFO(overlay_5, 0),
2879 OVERLAY_INFO(overlay_6, 0),
2880 OVERLAY_INFO(overlay_7, 0),
2881 OVERLAY_INFO(overlay_8, 0),
2882 OVERLAY_INFO(overlay_9, 0),
2883 OVERLAY_INFO(overlay_10, 0),
2884 OVERLAY_INFO(overlay_11, 0),
2885 OVERLAY_INFO(overlay_12, 0),
2886 OVERLAY_INFO(overlay_13, 0),
2887 OVERLAY_INFO(overlay_15, 0),
2888 OVERLAY_INFO(overlay_gpio_01, 0),
2889 OVERLAY_INFO(overlay_gpio_02a, 0),
2890 OVERLAY_INFO(overlay_gpio_02b, 0),
2891 OVERLAY_INFO(overlay_gpio_03, 0),
2892 OVERLAY_INFO(overlay_gpio_04a, 0),
2893 OVERLAY_INFO(overlay_gpio_04b, 0),
2894 OVERLAY_INFO(overlay_bad_add_dup_node, -EINVAL),
2895 OVERLAY_INFO(overlay_bad_add_dup_prop, -EINVAL),
2896 OVERLAY_INFO(overlay_bad_phandle, -EINVAL),
2897 OVERLAY_INFO(overlay_bad_symbol, -EINVAL),
2899 {.dtb_begin = NULL, .dtb_end = NULL, .expected_result = 0, .name = NULL}
2902 static struct device_node *overlay_base_root;
2904 static void * __init dt_alloc_memory(u64 size, u64 align)
2906 void *ptr = memblock_alloc(size, align);
2909 panic("%s: Failed to allocate %llu bytes align=0x%llx\n",
2910 __func__, size, align);
2916 * Create base device tree for the overlay unittest.
2918 * This is called from very early boot code.
2920 * Do as much as possible the same way as done in __unflatten_device_tree
2921 * and other early boot steps for the normal FDT so that the overlay base
2922 * unflattened tree will have the same characteristics as the real tree
2923 * (such as having memory allocated by the early allocator). The goal
2924 * is to test "the real thing" as much as possible, and test "test setup
2925 * code" as little as possible.
2927 * Have to stop before resolving phandles, because that uses kmalloc.
2929 void __init unittest_unflatten_overlay_base(void)
2931 struct overlay_info *info;
2936 const char *overlay_name = "overlay_base";
2938 for (info = overlays; info && info->name; info++) {
2939 if (!strcmp(overlay_name, info->name)) {
2945 pr_err("no overlay data for %s\n", overlay_name);
2949 info = &overlays[0];
2951 if (info->expected_result != -9999) {
2952 pr_err("No dtb 'overlay_base' to attach\n");
2956 data_size = info->dtb_end - info->dtb_begin;
2958 pr_err("No dtb 'overlay_base' to attach\n");
2962 size = fdt_totalsize(info->dtb_begin);
2963 if (size != data_size) {
2964 pr_err("dtb 'overlay_base' header totalsize != actual size");
2968 new_fdt = dt_alloc_memory(size, roundup_pow_of_two(FDT_V17_SIZE));
2970 pr_err("alloc for dtb 'overlay_base' failed");
2974 memcpy(new_fdt, info->dtb_begin, size);
2976 __unflatten_device_tree(new_fdt, NULL, &overlay_base_root,
2977 dt_alloc_memory, true);
2981 * The purpose of of_unittest_overlay_data_add is to add an
2982 * overlay in the normal fashion. This is a test of the whole
2983 * picture, instead of testing individual elements.
2985 * A secondary purpose is to be able to verify that the contents of
2986 * /proc/device-tree/ contains the updated structure and values from
2987 * the overlay. That must be verified separately in user space.
2989 * Return 0 on unexpected error.
2991 static int __init overlay_data_apply(const char *overlay_name, int *overlay_id)
2993 struct overlay_info *info;
2998 for (info = overlays; info && info->name; info++) {
2999 if (!strcmp(overlay_name, info->name)) {
3005 pr_err("no overlay data for %s\n", overlay_name);
3009 size = info->dtb_end - info->dtb_begin;
3011 pr_err("no overlay data for %s\n", overlay_name);
3013 ret = of_overlay_fdt_apply(info->dtb_begin, size, &info->overlay_id);
3015 *overlay_id = info->overlay_id;
3019 pr_debug("%s applied\n", overlay_name);
3022 if (ret != info->expected_result)
3023 pr_err("of_overlay_fdt_apply() expected %d, ret=%d, %s\n",
3024 info->expected_result, ret, overlay_name);
3026 return (ret == info->expected_result);
3030 * The purpose of of_unittest_overlay_high_level is to add an overlay
3031 * in the normal fashion. This is a test of the whole picture,
3032 * instead of individual elements.
3034 * The first part of the function is _not_ normal overlay usage; it is
3035 * finishing splicing the base overlay device tree into the live tree.
3037 static __init void of_unittest_overlay_high_level(void)
3039 struct device_node *last_sibling;
3040 struct device_node *np;
3041 struct device_node *of_symbols;
3042 struct device_node *overlay_base_symbols;
3043 struct device_node **pprev;
3044 struct property *prop;
3047 if (!overlay_base_root) {
3048 unittest(0, "overlay_base_root not initialized\n");
3053 * Could not fixup phandles in unittest_unflatten_overlay_base()
3054 * because kmalloc() was not yet available.
3056 of_overlay_mutex_lock();
3057 of_resolve_phandles(overlay_base_root);
3058 of_overlay_mutex_unlock();
3062 * do not allow overlay_base to duplicate any node already in
3063 * tree, this greatly simplifies the code
3067 * remove overlay_base_root node "__local_fixups", after
3068 * being used by of_resolve_phandles()
3070 pprev = &overlay_base_root->child;
3071 for (np = overlay_base_root->child; np; np = np->sibling) {
3072 if (of_node_name_eq(np, "__local_fixups__")) {
3073 *pprev = np->sibling;
3076 pprev = &np->sibling;
3079 /* remove overlay_base_root node "__symbols__" if in live tree */
3080 of_symbols = of_get_child_by_name(of_root, "__symbols__");
3082 /* will have to graft properties from node into live tree */
3083 pprev = &overlay_base_root->child;
3084 for (np = overlay_base_root->child; np; np = np->sibling) {
3085 if (of_node_name_eq(np, "__symbols__")) {
3086 overlay_base_symbols = np;
3087 *pprev = np->sibling;
3090 pprev = &np->sibling;
3094 for_each_child_of_node(overlay_base_root, np) {
3095 struct device_node *base_child;
3096 for_each_child_of_node(of_root, base_child) {
3097 if (!strcmp(np->full_name, base_child->full_name)) {
3098 unittest(0, "illegal node name in overlay_base %pOFn",
3106 * overlay 'overlay_base' is not allowed to have root
3107 * properties, so only need to splice nodes into main device tree.
3109 * root node of *overlay_base_root will not be freed, it is lost
3113 for (np = overlay_base_root->child; np; np = np->sibling)
3114 np->parent = of_root;
3116 mutex_lock(&of_mutex);
3118 for (last_sibling = np = of_root->child; np; np = np->sibling)
3122 last_sibling->sibling = overlay_base_root->child;
3124 of_root->child = overlay_base_root->child;
3126 for_each_of_allnodes_from(overlay_base_root, np)
3127 __of_attach_node_sysfs(np);
3130 struct property *new_prop;
3131 for_each_property_of_node(overlay_base_symbols, prop) {
3133 new_prop = __of_prop_dup(prop, GFP_KERNEL);
3135 unittest(0, "__of_prop_dup() of '%s' from overlay_base node __symbols__",
3139 if (__of_add_property(of_symbols, new_prop)) {
3140 kfree(new_prop->name);
3141 kfree(new_prop->value);
3143 /* "name" auto-generated by unflatten */
3144 if (!strcmp(prop->name, "name"))
3146 unittest(0, "duplicate property '%s' in overlay_base node __symbols__",
3150 if (__of_add_property_sysfs(of_symbols, new_prop)) {
3151 unittest(0, "unable to add property '%s' in overlay_base node __symbols__ to sysfs",
3158 mutex_unlock(&of_mutex);
3161 /* now do the normal overlay usage test */
3163 EXPECT_BEGIN(KERN_ERR,
3164 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/substation@100/status");
3165 EXPECT_BEGIN(KERN_ERR,
3166 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/status");
3167 EXPECT_BEGIN(KERN_ERR,
3168 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@30/incline-up");
3169 EXPECT_BEGIN(KERN_ERR,
3170 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@40/incline-up");
3171 EXPECT_BEGIN(KERN_ERR,
3172 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/status");
3173 EXPECT_BEGIN(KERN_ERR,
3174 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/color");
3175 EXPECT_BEGIN(KERN_ERR,
3176 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/rate");
3177 EXPECT_BEGIN(KERN_ERR,
3178 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/hvac_2");
3179 EXPECT_BEGIN(KERN_ERR,
3180 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200");
3181 EXPECT_BEGIN(KERN_ERR,
3182 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_left");
3183 EXPECT_BEGIN(KERN_ERR,
3184 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_right");
3186 ret = overlay_data_apply("overlay", NULL);
3188 EXPECT_END(KERN_ERR,
3189 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_right");
3190 EXPECT_END(KERN_ERR,
3191 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_left");
3192 EXPECT_END(KERN_ERR,
3193 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200");
3194 EXPECT_END(KERN_ERR,
3195 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/hvac_2");
3196 EXPECT_END(KERN_ERR,
3197 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/rate");
3198 EXPECT_END(KERN_ERR,
3199 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/color");
3200 EXPECT_END(KERN_ERR,
3201 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/status");
3202 EXPECT_END(KERN_ERR,
3203 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@40/incline-up");
3204 EXPECT_END(KERN_ERR,
3205 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@30/incline-up");
3206 EXPECT_END(KERN_ERR,
3207 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/status");
3208 EXPECT_END(KERN_ERR,
3209 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/substation@100/status");
3211 unittest(ret, "Adding overlay 'overlay' failed\n");
3213 EXPECT_BEGIN(KERN_ERR,
3214 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/controller");
3215 EXPECT_BEGIN(KERN_ERR,
3216 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/controller/name");
3218 unittest(overlay_data_apply("overlay_bad_add_dup_node", NULL),
3219 "Adding overlay 'overlay_bad_add_dup_node' failed\n");
3221 EXPECT_END(KERN_ERR,
3222 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/controller/name");
3223 EXPECT_END(KERN_ERR,
3224 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/controller");
3226 EXPECT_BEGIN(KERN_ERR,
3227 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/electric");
3228 EXPECT_BEGIN(KERN_ERR,
3229 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/rpm_avail");
3230 EXPECT_BEGIN(KERN_ERR,
3231 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/name");
3233 unittest(overlay_data_apply("overlay_bad_add_dup_prop", NULL),
3234 "Adding overlay 'overlay_bad_add_dup_prop' failed\n");
3236 EXPECT_END(KERN_ERR,
3237 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/name");
3238 EXPECT_END(KERN_ERR,
3239 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/rpm_avail");
3240 EXPECT_END(KERN_ERR,
3241 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/electric");
3243 unittest(overlay_data_apply("overlay_bad_phandle", NULL),
3244 "Adding overlay 'overlay_bad_phandle' failed\n");
3246 unittest(overlay_data_apply("overlay_bad_symbol", NULL),
3247 "Adding overlay 'overlay_bad_symbol' failed\n");
3252 mutex_unlock(&of_mutex);
3257 static inline __init void of_unittest_overlay_high_level(void) {}
3261 static int __init of_unittest(void)
3263 struct device_node *np;
3266 pr_info("start of unittest - you will see error messages\n");
3268 /* adding data for unittest */
3270 if (IS_ENABLED(CONFIG_UML))
3271 unittest_unflatten_overlay_base();
3273 res = unittest_data_add();
3277 of_aliases = of_find_node_by_path("/aliases");
3279 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
3281 pr_info("No testcase data in device tree; not running tests\n");
3286 of_unittest_check_tree_linkage();
3287 of_unittest_check_phandles();
3288 of_unittest_find_node_by_name();
3289 of_unittest_dynamic();
3290 of_unittest_parse_phandle_with_args();
3291 of_unittest_parse_phandle_with_args_map();
3292 of_unittest_printf();
3293 of_unittest_property_string();
3294 of_unittest_property_copy();
3295 of_unittest_changeset();
3296 of_unittest_parse_interrupts();
3297 of_unittest_parse_interrupts_extended();
3298 of_unittest_dma_get_max_cpu_address();
3299 of_unittest_parse_dma_ranges();
3300 of_unittest_pci_dma_ranges();
3301 of_unittest_match_node();
3302 of_unittest_platform_populate();
3303 of_unittest_overlay();
3305 /* Double check linkage after removing testcase data */
3306 of_unittest_check_tree_linkage();
3308 of_unittest_overlay_high_level();
3310 pr_info("end of unittest - %i passed, %i failed\n",
3311 unittest_results.passed, unittest_results.failed);
3315 late_initcall(of_unittest);