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_ranges_one(const char *path,
873 u64 expect_dma_addr, u64 expect_paddr)
875 #ifdef CONFIG_HAS_DMA
876 struct device_node *np;
877 const struct bus_dma_region *map = NULL;
880 np = of_find_node_by_path(path);
882 pr_err("missing testcase data\n");
886 rc = of_dma_get_range(np, &map);
888 unittest(!rc, "of_dma_get_range failed on node %pOF rc=%i\n", np, rc);
893 struct device dev_bogus;
895 dev_bogus.dma_range_map = map;
896 paddr = dma_to_phys(&dev_bogus, expect_dma_addr);
897 dma_addr = phys_to_dma(&dev_bogus, expect_paddr);
899 unittest(paddr == expect_paddr,
900 "of_dma_get_range: wrong phys addr %pap (expecting %llx) on node %pOF\n",
901 &paddr, expect_paddr, np);
902 unittest(dma_addr == expect_dma_addr,
903 "of_dma_get_range: wrong DMA addr %pad (expecting %llx) on node %pOF\n",
904 &dma_addr, expect_dma_addr, np);
912 static void __init of_unittest_parse_dma_ranges(void)
914 of_unittest_dma_ranges_one("/testcase-data/address-tests/device@70000000",
916 of_unittest_dma_ranges_one("/testcase-data/address-tests/bus@80000000/device@1000",
917 0x100000000, 0x20000000);
918 of_unittest_dma_ranges_one("/testcase-data/address-tests/pci@90000000",
919 0x80000000, 0x20000000);
922 static void __init of_unittest_pci_dma_ranges(void)
924 struct device_node *np;
925 struct of_pci_range range;
926 struct of_pci_range_parser parser;
929 if (!IS_ENABLED(CONFIG_PCI))
932 np = of_find_node_by_path("/testcase-data/address-tests/pci@90000000");
934 pr_err("missing testcase data\n");
938 if (of_pci_dma_range_parser_init(&parser, np)) {
939 pr_err("missing dma-ranges property\n");
944 * Get the dma-ranges from the device tree
946 for_each_of_pci_range(&parser, &range) {
948 unittest(range.size == 0x10000000,
949 "for_each_of_pci_range wrong size on node %pOF size=%llx\n",
951 unittest(range.cpu_addr == 0x20000000,
952 "for_each_of_pci_range wrong CPU addr (%llx) on node %pOF",
954 unittest(range.pci_addr == 0x80000000,
955 "for_each_of_pci_range wrong DMA addr (%llx) on node %pOF",
958 unittest(range.size == 0x10000000,
959 "for_each_of_pci_range wrong size on node %pOF size=%llx\n",
961 unittest(range.cpu_addr == 0x40000000,
962 "for_each_of_pci_range wrong CPU addr (%llx) on node %pOF",
964 unittest(range.pci_addr == 0xc0000000,
965 "for_each_of_pci_range wrong DMA addr (%llx) on node %pOF",
974 static void __init of_unittest_parse_interrupts(void)
976 struct device_node *np;
977 struct of_phandle_args args;
980 if (of_irq_workarounds & OF_IMAP_OLDWORLD_MAC)
983 np = of_find_node_by_path("/testcase-data/interrupts/interrupts0");
985 pr_err("missing testcase data\n");
989 for (i = 0; i < 4; i++) {
992 memset(&args, 0, sizeof(args));
993 rc = of_irq_parse_one(np, i, &args);
996 passed &= (args.args_count == 1);
997 passed &= (args.args[0] == (i + 1));
999 unittest(passed, "index %i - data error on node %pOF rc=%i\n",
1004 np = of_find_node_by_path("/testcase-data/interrupts/interrupts1");
1006 pr_err("missing testcase data\n");
1010 for (i = 0; i < 4; i++) {
1013 memset(&args, 0, sizeof(args));
1014 rc = of_irq_parse_one(np, i, &args);
1016 /* Test the values from tests-phandle.dtsi */
1020 passed &= (args.args_count == 1);
1021 passed &= (args.args[0] == 9);
1025 passed &= (args.args_count == 3);
1026 passed &= (args.args[0] == 10);
1027 passed &= (args.args[1] == 11);
1028 passed &= (args.args[2] == 12);
1032 passed &= (args.args_count == 2);
1033 passed &= (args.args[0] == 13);
1034 passed &= (args.args[1] == 14);
1038 passed &= (args.args_count == 2);
1039 passed &= (args.args[0] == 15);
1040 passed &= (args.args[1] == 16);
1045 unittest(passed, "index %i - data error on node %pOF rc=%i\n",
1051 static void __init of_unittest_parse_interrupts_extended(void)
1053 struct device_node *np;
1054 struct of_phandle_args args;
1057 if (of_irq_workarounds & OF_IMAP_OLDWORLD_MAC)
1060 np = of_find_node_by_path("/testcase-data/interrupts/interrupts-extended0");
1062 pr_err("missing testcase data\n");
1066 for (i = 0; i < 7; i++) {
1069 memset(&args, 0, sizeof(args));
1070 rc = of_irq_parse_one(np, i, &args);
1072 /* Test the values from tests-phandle.dtsi */
1076 passed &= (args.args_count == 1);
1077 passed &= (args.args[0] == 1);
1081 passed &= (args.args_count == 3);
1082 passed &= (args.args[0] == 2);
1083 passed &= (args.args[1] == 3);
1084 passed &= (args.args[2] == 4);
1088 passed &= (args.args_count == 2);
1089 passed &= (args.args[0] == 5);
1090 passed &= (args.args[1] == 6);
1094 passed &= (args.args_count == 1);
1095 passed &= (args.args[0] == 9);
1099 passed &= (args.args_count == 3);
1100 passed &= (args.args[0] == 10);
1101 passed &= (args.args[1] == 11);
1102 passed &= (args.args[2] == 12);
1106 passed &= (args.args_count == 2);
1107 passed &= (args.args[0] == 13);
1108 passed &= (args.args[1] == 14);
1112 passed &= (args.args_count == 1);
1113 passed &= (args.args[0] == 15);
1119 unittest(passed, "index %i - data error on node %pOF rc=%i\n",
1125 static const struct of_device_id match_node_table[] = {
1126 { .data = "A", .name = "name0", }, /* Name alone is lowest priority */
1127 { .data = "B", .type = "type1", }, /* followed by type alone */
1129 { .data = "Ca", .name = "name2", .type = "type1", }, /* followed by both together */
1130 { .data = "Cb", .name = "name2", }, /* Only match when type doesn't match */
1131 { .data = "Cc", .name = "name2", .type = "type2", },
1133 { .data = "E", .compatible = "compat3" },
1134 { .data = "G", .compatible = "compat2", },
1135 { .data = "H", .compatible = "compat2", .name = "name5", },
1136 { .data = "I", .compatible = "compat2", .type = "type1", },
1137 { .data = "J", .compatible = "compat2", .type = "type1", .name = "name8", },
1138 { .data = "K", .compatible = "compat2", .name = "name9", },
1145 } match_node_tests[] = {
1146 { .path = "/testcase-data/match-node/name0", .data = "A", },
1147 { .path = "/testcase-data/match-node/name1", .data = "B", },
1148 { .path = "/testcase-data/match-node/a/name2", .data = "Ca", },
1149 { .path = "/testcase-data/match-node/b/name2", .data = "Cb", },
1150 { .path = "/testcase-data/match-node/c/name2", .data = "Cc", },
1151 { .path = "/testcase-data/match-node/name3", .data = "E", },
1152 { .path = "/testcase-data/match-node/name4", .data = "G", },
1153 { .path = "/testcase-data/match-node/name5", .data = "H", },
1154 { .path = "/testcase-data/match-node/name6", .data = "G", },
1155 { .path = "/testcase-data/match-node/name7", .data = "I", },
1156 { .path = "/testcase-data/match-node/name8", .data = "J", },
1157 { .path = "/testcase-data/match-node/name9", .data = "K", },
1160 static void __init of_unittest_match_node(void)
1162 struct device_node *np;
1163 const struct of_device_id *match;
1166 for (i = 0; i < ARRAY_SIZE(match_node_tests); i++) {
1167 np = of_find_node_by_path(match_node_tests[i].path);
1169 unittest(0, "missing testcase node %s\n",
1170 match_node_tests[i].path);
1174 match = of_match_node(match_node_table, np);
1176 unittest(0, "%s didn't match anything\n",
1177 match_node_tests[i].path);
1181 if (strcmp(match->data, match_node_tests[i].data) != 0) {
1182 unittest(0, "%s got wrong match. expected %s, got %s\n",
1183 match_node_tests[i].path, match_node_tests[i].data,
1184 (const char *)match->data);
1187 unittest(1, "passed");
1191 static struct resource test_bus_res = {
1192 .start = 0xfffffff8,
1194 .flags = IORESOURCE_MEM,
1196 static const struct platform_device_info test_bus_info = {
1197 .name = "unittest-bus",
1199 static void __init of_unittest_platform_populate(void)
1202 struct device_node *np, *child, *grandchild;
1203 struct platform_device *pdev, *test_bus;
1204 const struct of_device_id match[] = {
1205 { .compatible = "test-device", },
1209 np = of_find_node_by_path("/testcase-data");
1210 of_platform_default_populate(np, NULL, NULL);
1212 /* Test that a missing irq domain returns -EPROBE_DEFER */
1213 np = of_find_node_by_path("/testcase-data/testcase-device1");
1214 pdev = of_find_device_by_node(np);
1215 unittest(pdev, "device 1 creation failed\n");
1217 if (!(of_irq_workarounds & OF_IMAP_OLDWORLD_MAC)) {
1218 irq = platform_get_irq(pdev, 0);
1219 unittest(irq == -EPROBE_DEFER,
1220 "device deferred probe failed - %d\n", irq);
1222 /* Test that a parsing failure does not return -EPROBE_DEFER */
1223 np = of_find_node_by_path("/testcase-data/testcase-device2");
1224 pdev = of_find_device_by_node(np);
1225 unittest(pdev, "device 2 creation failed\n");
1227 EXPECT_BEGIN(KERN_INFO,
1228 "platform testcase-data:testcase-device2: IRQ index 0 not found");
1230 irq = platform_get_irq(pdev, 0);
1232 EXPECT_END(KERN_INFO,
1233 "platform testcase-data:testcase-device2: IRQ index 0 not found");
1235 unittest(irq < 0 && irq != -EPROBE_DEFER,
1236 "device parsing error failed - %d\n", irq);
1239 np = of_find_node_by_path("/testcase-data/platform-tests");
1240 unittest(np, "No testcase data in device tree\n");
1244 test_bus = platform_device_register_full(&test_bus_info);
1245 rc = PTR_ERR_OR_ZERO(test_bus);
1246 unittest(!rc, "testbus registration failed; rc=%i\n", rc);
1251 test_bus->dev.of_node = np;
1254 * Add a dummy resource to the test bus node after it is
1255 * registered to catch problems with un-inserted resources. The
1256 * DT code doesn't insert the resources, and it has caused the
1257 * kernel to oops in the past. This makes sure the same bug
1258 * doesn't crop up again.
1260 platform_device_add_resources(test_bus, &test_bus_res, 1);
1262 of_platform_populate(np, match, NULL, &test_bus->dev);
1263 for_each_child_of_node(np, child) {
1264 for_each_child_of_node(child, grandchild) {
1265 pdev = of_find_device_by_node(grandchild);
1267 "Could not create device for node '%pOFn'\n",
1273 of_platform_depopulate(&test_bus->dev);
1274 for_each_child_of_node(np, child) {
1275 for_each_child_of_node(child, grandchild)
1276 unittest(!of_find_device_by_node(grandchild),
1277 "device didn't get destroyed '%pOFn'\n",
1281 platform_device_unregister(test_bus);
1286 * update_node_properties - adds the properties
1287 * of np into dup node (present in live tree) and
1288 * updates parent of children of np to dup.
1290 * @np: node whose properties are being added to the live tree
1291 * @dup: node present in live tree to be updated
1293 static void update_node_properties(struct device_node *np,
1294 struct device_node *dup)
1296 struct property *prop;
1297 struct property *save_next;
1298 struct device_node *child;
1301 for_each_child_of_node(np, child)
1302 child->parent = dup;
1305 * "unittest internal error: unable to add testdata property"
1307 * If this message reports a property in node '/__symbols__' then
1308 * the respective unittest overlay contains a label that has the
1309 * same name as a label in the live devicetree. The label will
1310 * be in the live devicetree only if the devicetree source was
1311 * compiled with the '-@' option. If you encounter this error,
1312 * please consider renaming __all__ of the labels in the unittest
1313 * overlay dts files with an odd prefix that is unlikely to be
1314 * used in a real devicetree.
1318 * open code for_each_property_of_node() because of_add_property()
1319 * sets prop->next to NULL
1321 for (prop = np->properties; prop != NULL; prop = save_next) {
1322 save_next = prop->next;
1323 ret = of_add_property(dup, prop);
1325 if (ret == -EEXIST && !strcmp(prop->name, "name"))
1327 pr_err("unittest internal error: unable to add testdata property %pOF/%s",
1334 * attach_node_and_children - attaches nodes
1335 * and its children to live tree.
1336 * CAUTION: misleading function name - if node @np already exists in
1337 * the live tree then children of @np are *not* attached to the live
1338 * tree. This works for the current test devicetree nodes because such
1339 * nodes do not have child nodes.
1341 * @np: Node to attach to live tree
1343 static void attach_node_and_children(struct device_node *np)
1345 struct device_node *next, *dup, *child;
1346 unsigned long flags;
1347 const char *full_name;
1349 full_name = kasprintf(GFP_KERNEL, "%pOF", np);
1351 if (!strcmp(full_name, "/__local_fixups__") ||
1352 !strcmp(full_name, "/__fixups__")) {
1357 dup = of_find_node_by_path(full_name);
1360 update_node_properties(np, dup);
1367 mutex_lock(&of_mutex);
1368 raw_spin_lock_irqsave(&devtree_lock, flags);
1369 np->sibling = np->parent->child;
1370 np->parent->child = np;
1371 of_node_clear_flag(np, OF_DETACHED);
1372 raw_spin_unlock_irqrestore(&devtree_lock, flags);
1374 __of_attach_node_sysfs(np);
1375 mutex_unlock(&of_mutex);
1378 next = child->sibling;
1379 attach_node_and_children(child);
1385 * unittest_data_add - Reads, copies data from
1386 * linked tree and attaches it to the live tree
1388 static int __init unittest_data_add(void)
1390 void *unittest_data;
1391 struct device_node *unittest_data_node, *np;
1393 * __dtb_testcases_begin[] and __dtb_testcases_end[] are magically
1394 * created by cmd_dt_S_dtb in scripts/Makefile.lib
1396 extern uint8_t __dtb_testcases_begin[];
1397 extern uint8_t __dtb_testcases_end[];
1398 const int size = __dtb_testcases_end - __dtb_testcases_begin;
1402 pr_warn("%s: No testcase data to attach; not running tests\n",
1408 unittest_data = kmemdup(__dtb_testcases_begin, size, GFP_KERNEL);
1412 of_fdt_unflatten_tree(unittest_data, NULL, &unittest_data_node);
1413 if (!unittest_data_node) {
1414 pr_warn("%s: No tree to attach; not running tests\n", __func__);
1415 kfree(unittest_data);
1420 * This lock normally encloses of_resolve_phandles()
1422 of_overlay_mutex_lock();
1424 rc = of_resolve_phandles(unittest_data_node);
1426 pr_err("%s: Failed to resolve phandles (rc=%i)\n", __func__, rc);
1427 of_overlay_mutex_unlock();
1432 of_root = unittest_data_node;
1433 for_each_of_allnodes(np)
1434 __of_attach_node_sysfs(np);
1435 of_aliases = of_find_node_by_path("/aliases");
1436 of_chosen = of_find_node_by_path("/chosen");
1437 of_overlay_mutex_unlock();
1441 EXPECT_BEGIN(KERN_INFO,
1442 "Duplicate name in testcase-data, renamed to \"duplicate-name#1\"");
1444 /* attach the sub-tree to live tree */
1445 np = unittest_data_node->child;
1447 struct device_node *next = np->sibling;
1449 np->parent = of_root;
1450 attach_node_and_children(np);
1454 EXPECT_END(KERN_INFO,
1455 "Duplicate name in testcase-data, renamed to \"duplicate-name#1\"");
1457 of_overlay_mutex_unlock();
1462 #ifdef CONFIG_OF_OVERLAY
1463 static int __init overlay_data_apply(const char *overlay_name, int *overlay_id);
1465 static int unittest_probe(struct platform_device *pdev)
1467 struct device *dev = &pdev->dev;
1468 struct device_node *np = dev->of_node;
1471 dev_err(dev, "No OF data for device\n");
1476 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
1478 of_platform_populate(np, NULL, NULL, &pdev->dev);
1483 static int unittest_remove(struct platform_device *pdev)
1485 struct device *dev = &pdev->dev;
1486 struct device_node *np = dev->of_node;
1488 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
1492 static const struct of_device_id unittest_match[] = {
1493 { .compatible = "unittest", },
1497 static struct platform_driver unittest_driver = {
1498 .probe = unittest_probe,
1499 .remove = unittest_remove,
1502 .of_match_table = of_match_ptr(unittest_match),
1506 /* get the platform device instantiated at the path */
1507 static struct platform_device *of_path_to_platform_device(const char *path)
1509 struct device_node *np;
1510 struct platform_device *pdev;
1512 np = of_find_node_by_path(path);
1516 pdev = of_find_device_by_node(np);
1522 /* find out if a platform device exists at that path */
1523 static int of_path_platform_device_exists(const char *path)
1525 struct platform_device *pdev;
1527 pdev = of_path_to_platform_device(path);
1528 platform_device_put(pdev);
1529 return pdev != NULL;
1532 #ifdef CONFIG_OF_GPIO
1534 struct unittest_gpio_dev {
1535 struct gpio_chip chip;
1538 static int unittest_gpio_chip_request_count;
1539 static int unittest_gpio_probe_count;
1540 static int unittest_gpio_probe_pass_count;
1542 static int unittest_gpio_chip_request(struct gpio_chip *chip, unsigned int offset)
1544 unittest_gpio_chip_request_count++;
1546 pr_debug("%s(): %s %d %d\n", __func__, chip->label, offset,
1547 unittest_gpio_chip_request_count);
1551 static int unittest_gpio_probe(struct platform_device *pdev)
1553 struct unittest_gpio_dev *devptr;
1556 unittest_gpio_probe_count++;
1558 devptr = kzalloc(sizeof(*devptr), GFP_KERNEL);
1562 platform_set_drvdata(pdev, devptr);
1564 devptr->chip.of_node = pdev->dev.of_node;
1565 devptr->chip.label = "of-unittest-gpio";
1566 devptr->chip.base = -1; /* dynamic allocation */
1567 devptr->chip.ngpio = 5;
1568 devptr->chip.request = unittest_gpio_chip_request;
1570 ret = gpiochip_add_data(&devptr->chip, NULL);
1573 "gpiochip_add_data() for node @%pOF failed, ret = %d\n", devptr->chip.of_node, ret);
1576 unittest_gpio_probe_pass_count++;
1580 static int unittest_gpio_remove(struct platform_device *pdev)
1582 struct unittest_gpio_dev *gdev = platform_get_drvdata(pdev);
1583 struct device *dev = &pdev->dev;
1584 struct device_node *np = pdev->dev.of_node;
1586 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
1591 if (gdev->chip.base != -1)
1592 gpiochip_remove(&gdev->chip);
1594 platform_set_drvdata(pdev, NULL);
1600 static const struct of_device_id unittest_gpio_id[] = {
1601 { .compatible = "unittest-gpio", },
1605 static struct platform_driver unittest_gpio_driver = {
1606 .probe = unittest_gpio_probe,
1607 .remove = unittest_gpio_remove,
1609 .name = "unittest-gpio",
1610 .of_match_table = of_match_ptr(unittest_gpio_id),
1614 static void __init of_unittest_overlay_gpio(void)
1616 int chip_request_count;
1617 int probe_pass_count;
1621 * tests: apply overlays before registering driver
1622 * Similar to installing a driver as a module, the
1623 * driver is registered after applying the overlays.
1625 * The overlays are applied by overlay_data_apply()
1626 * instead of of_unittest_apply_overlay() so that they
1627 * will not be tracked. Thus they will not be removed
1628 * by of_unittest_destroy_tracked_overlays().
1630 * - apply overlay_gpio_01
1631 * - apply overlay_gpio_02a
1632 * - apply overlay_gpio_02b
1635 * register driver will result in
1636 * - probe and processing gpio hog for overlay_gpio_01
1637 * - probe for overlay_gpio_02a
1638 * - processing gpio for overlay_gpio_02b
1641 probe_pass_count = unittest_gpio_probe_pass_count;
1642 chip_request_count = unittest_gpio_chip_request_count;
1645 * overlay_gpio_01 contains gpio node and child gpio hog node
1646 * overlay_gpio_02a contains gpio node
1647 * overlay_gpio_02b contains child gpio hog node
1650 unittest(overlay_data_apply("overlay_gpio_01", NULL),
1651 "Adding overlay 'overlay_gpio_01' failed\n");
1653 unittest(overlay_data_apply("overlay_gpio_02a", NULL),
1654 "Adding overlay 'overlay_gpio_02a' failed\n");
1656 unittest(overlay_data_apply("overlay_gpio_02b", NULL),
1657 "Adding overlay 'overlay_gpio_02b' failed\n");
1660 * messages are the result of the probes, after the
1661 * driver is registered
1664 EXPECT_BEGIN(KERN_INFO,
1665 "GPIO line <<int>> (line-B-input) hogged as input\n");
1667 EXPECT_BEGIN(KERN_INFO,
1668 "GPIO line <<int>> (line-A-input) hogged as input\n");
1670 ret = platform_driver_register(&unittest_gpio_driver);
1671 if (unittest(ret == 0, "could not register unittest gpio driver\n"))
1674 EXPECT_END(KERN_INFO,
1675 "GPIO line <<int>> (line-A-input) hogged as input\n");
1676 EXPECT_END(KERN_INFO,
1677 "GPIO line <<int>> (line-B-input) hogged as input\n");
1679 unittest(probe_pass_count + 2 == unittest_gpio_probe_pass_count,
1680 "unittest_gpio_probe() failed or not called\n");
1682 unittest(chip_request_count + 2 == unittest_gpio_chip_request_count,
1683 "unittest_gpio_chip_request() called %d times (expected 1 time)\n",
1684 unittest_gpio_chip_request_count - chip_request_count);
1687 * tests: apply overlays after registering driver
1689 * Similar to a driver built-in to the kernel, the
1690 * driver is registered before applying the overlays.
1692 * overlay_gpio_03 contains gpio node and child gpio hog node
1694 * - apply overlay_gpio_03
1696 * apply overlay will result in
1697 * - probe and processing gpio hog.
1700 probe_pass_count = unittest_gpio_probe_pass_count;
1701 chip_request_count = unittest_gpio_chip_request_count;
1703 EXPECT_BEGIN(KERN_INFO,
1704 "GPIO line <<int>> (line-D-input) hogged as input\n");
1706 /* overlay_gpio_03 contains gpio node and child gpio hog node */
1708 unittest(overlay_data_apply("overlay_gpio_03", NULL),
1709 "Adding overlay 'overlay_gpio_03' failed\n");
1711 EXPECT_END(KERN_INFO,
1712 "GPIO line <<int>> (line-D-input) hogged as input\n");
1714 unittest(probe_pass_count + 1 == unittest_gpio_probe_pass_count,
1715 "unittest_gpio_probe() failed or not called\n");
1717 unittest(chip_request_count + 1 == unittest_gpio_chip_request_count,
1718 "unittest_gpio_chip_request() called %d times (expected 1 time)\n",
1719 unittest_gpio_chip_request_count - chip_request_count);
1722 * overlay_gpio_04a contains gpio node
1724 * - apply overlay_gpio_04a
1726 * apply the overlay will result in
1727 * - probe for overlay_gpio_04a
1730 probe_pass_count = unittest_gpio_probe_pass_count;
1731 chip_request_count = unittest_gpio_chip_request_count;
1733 /* overlay_gpio_04a contains gpio node */
1735 unittest(overlay_data_apply("overlay_gpio_04a", NULL),
1736 "Adding overlay 'overlay_gpio_04a' failed\n");
1738 unittest(probe_pass_count + 1 == unittest_gpio_probe_pass_count,
1739 "unittest_gpio_probe() failed or not called\n");
1742 * overlay_gpio_04b contains child gpio hog node
1744 * - apply overlay_gpio_04b
1746 * apply the overlay will result in
1747 * - processing gpio for overlay_gpio_04b
1750 EXPECT_BEGIN(KERN_INFO,
1751 "GPIO line <<int>> (line-C-input) hogged as input\n");
1753 /* overlay_gpio_04b contains child gpio hog node */
1755 unittest(overlay_data_apply("overlay_gpio_04b", NULL),
1756 "Adding overlay 'overlay_gpio_04b' failed\n");
1758 EXPECT_END(KERN_INFO,
1759 "GPIO line <<int>> (line-C-input) hogged as input\n");
1761 unittest(chip_request_count + 1 == unittest_gpio_chip_request_count,
1762 "unittest_gpio_chip_request() called %d times (expected 1 time)\n",
1763 unittest_gpio_chip_request_count - chip_request_count);
1768 static void __init of_unittest_overlay_gpio(void)
1775 #if IS_BUILTIN(CONFIG_I2C)
1777 /* get the i2c client device instantiated at the path */
1778 static struct i2c_client *of_path_to_i2c_client(const char *path)
1780 struct device_node *np;
1781 struct i2c_client *client;
1783 np = of_find_node_by_path(path);
1787 client = of_find_i2c_device_by_node(np);
1793 /* find out if a i2c client device exists at that path */
1794 static int of_path_i2c_client_exists(const char *path)
1796 struct i2c_client *client;
1798 client = of_path_to_i2c_client(path);
1800 put_device(&client->dev);
1801 return client != NULL;
1804 static int of_path_i2c_client_exists(const char *path)
1815 static int of_path_device_type_exists(const char *path,
1816 enum overlay_type ovtype)
1820 return of_path_platform_device_exists(path);
1822 return of_path_i2c_client_exists(path);
1827 static const char *unittest_path(int nr, enum overlay_type ovtype)
1830 static char buf[256];
1834 base = "/testcase-data/overlay-node/test-bus";
1837 base = "/testcase-data/overlay-node/test-bus/i2c-test-bus";
1843 snprintf(buf, sizeof(buf) - 1, "%s/test-unittest%d", base, nr);
1844 buf[sizeof(buf) - 1] = '\0';
1848 static int of_unittest_device_exists(int unittest_nr, enum overlay_type ovtype)
1852 path = unittest_path(unittest_nr, ovtype);
1856 return of_path_platform_device_exists(path);
1858 return of_path_i2c_client_exists(path);
1863 static const char *overlay_name_from_nr(int nr)
1865 static char buf[256];
1867 snprintf(buf, sizeof(buf) - 1,
1869 buf[sizeof(buf) - 1] = '\0';
1874 static const char *bus_path = "/testcase-data/overlay-node/test-bus";
1876 /* FIXME: it is NOT guaranteed that overlay ids are assigned in sequence */
1878 #define MAX_UNITTEST_OVERLAYS 256
1879 static unsigned long overlay_id_bits[BITS_TO_LONGS(MAX_UNITTEST_OVERLAYS)];
1880 static int overlay_first_id = -1;
1882 static long of_unittest_overlay_tracked(int id)
1884 if (WARN_ON(id >= MAX_UNITTEST_OVERLAYS))
1886 return overlay_id_bits[BIT_WORD(id)] & BIT_MASK(id);
1889 static void of_unittest_track_overlay(int id)
1891 if (overlay_first_id < 0)
1892 overlay_first_id = id;
1893 id -= overlay_first_id;
1895 if (WARN_ON(id >= MAX_UNITTEST_OVERLAYS))
1897 overlay_id_bits[BIT_WORD(id)] |= BIT_MASK(id);
1900 static void of_unittest_untrack_overlay(int id)
1902 if (overlay_first_id < 0)
1904 id -= overlay_first_id;
1905 if (WARN_ON(id >= MAX_UNITTEST_OVERLAYS))
1907 overlay_id_bits[BIT_WORD(id)] &= ~BIT_MASK(id);
1910 static void of_unittest_destroy_tracked_overlays(void)
1912 int id, ret, defers, ovcs_id;
1914 if (overlay_first_id < 0)
1917 /* try until no defers */
1920 /* remove in reverse order */
1921 for (id = MAX_UNITTEST_OVERLAYS - 1; id >= 0; id--) {
1922 if (!of_unittest_overlay_tracked(id))
1925 ovcs_id = id + overlay_first_id;
1926 ret = of_overlay_remove(&ovcs_id);
1927 if (ret == -ENODEV) {
1928 pr_warn("%s: no overlay to destroy for #%d\n",
1929 __func__, id + overlay_first_id);
1934 pr_warn("%s: overlay destroy failed for #%d\n",
1935 __func__, id + overlay_first_id);
1939 of_unittest_untrack_overlay(id);
1941 } while (defers > 0);
1944 static int __init of_unittest_apply_overlay(int overlay_nr, int *overlay_id)
1946 const char *overlay_name;
1948 overlay_name = overlay_name_from_nr(overlay_nr);
1950 if (!overlay_data_apply(overlay_name, overlay_id)) {
1951 unittest(0, "could not apply overlay \"%s\"\n",
1955 of_unittest_track_overlay(*overlay_id);
1960 /* apply an overlay while checking before and after states */
1961 static int __init of_unittest_apply_overlay_check(int overlay_nr,
1962 int unittest_nr, int before, int after,
1963 enum overlay_type ovtype)
1967 /* unittest device must not be in before state */
1968 if (of_unittest_device_exists(unittest_nr, ovtype) != before) {
1969 unittest(0, "%s with device @\"%s\" %s\n",
1970 overlay_name_from_nr(overlay_nr),
1971 unittest_path(unittest_nr, ovtype),
1972 !before ? "enabled" : "disabled");
1977 ret = of_unittest_apply_overlay(overlay_nr, &ovcs_id);
1979 /* of_unittest_apply_overlay already called unittest() */
1983 /* unittest device must be to set to after state */
1984 if (of_unittest_device_exists(unittest_nr, ovtype) != after) {
1985 unittest(0, "%s failed to create @\"%s\" %s\n",
1986 overlay_name_from_nr(overlay_nr),
1987 unittest_path(unittest_nr, ovtype),
1988 !after ? "enabled" : "disabled");
1995 /* apply an overlay and then revert it while checking before, after states */
1996 static int __init of_unittest_apply_revert_overlay_check(int overlay_nr,
1997 int unittest_nr, int before, int after,
1998 enum overlay_type ovtype)
2000 int ret, ovcs_id, save_id;
2002 /* unittest device must be in before state */
2003 if (of_unittest_device_exists(unittest_nr, ovtype) != before) {
2004 unittest(0, "%s with device @\"%s\" %s\n",
2005 overlay_name_from_nr(overlay_nr),
2006 unittest_path(unittest_nr, ovtype),
2007 !before ? "enabled" : "disabled");
2011 /* apply the overlay */
2013 ret = of_unittest_apply_overlay(overlay_nr, &ovcs_id);
2015 /* of_unittest_apply_overlay already called unittest() */
2019 /* unittest device must be in after state */
2020 if (of_unittest_device_exists(unittest_nr, ovtype) != after) {
2021 unittest(0, "%s failed to create @\"%s\" %s\n",
2022 overlay_name_from_nr(overlay_nr),
2023 unittest_path(unittest_nr, ovtype),
2024 !after ? "enabled" : "disabled");
2029 ret = of_overlay_remove(&ovcs_id);
2031 unittest(0, "%s failed to be destroyed @\"%s\"\n",
2032 overlay_name_from_nr(overlay_nr),
2033 unittest_path(unittest_nr, ovtype));
2036 of_unittest_untrack_overlay(save_id);
2038 /* unittest device must be again in before state */
2039 if (of_unittest_device_exists(unittest_nr, PDEV_OVERLAY) != before) {
2040 unittest(0, "%s with device @\"%s\" %s\n",
2041 overlay_name_from_nr(overlay_nr),
2042 unittest_path(unittest_nr, ovtype),
2043 !before ? "enabled" : "disabled");
2050 /* test activation of device */
2051 static void __init of_unittest_overlay_0(void)
2055 EXPECT_BEGIN(KERN_INFO,
2056 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest0/status");
2058 /* device should enable */
2059 ret = of_unittest_apply_overlay_check(0, 0, 0, 1, PDEV_OVERLAY);
2061 EXPECT_END(KERN_INFO,
2062 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest0/status");
2067 unittest(1, "overlay test %d passed\n", 0);
2070 /* test deactivation of device */
2071 static void __init of_unittest_overlay_1(void)
2075 EXPECT_BEGIN(KERN_INFO,
2076 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest1/status");
2078 /* device should disable */
2079 ret = of_unittest_apply_overlay_check(1, 1, 1, 0, PDEV_OVERLAY);
2081 EXPECT_END(KERN_INFO,
2082 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest1/status");
2087 unittest(1, "overlay test %d passed\n", 1);
2091 /* test activation of device */
2092 static void __init of_unittest_overlay_2(void)
2096 EXPECT_BEGIN(KERN_INFO,
2097 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest2/status");
2099 /* device should enable */
2100 ret = of_unittest_apply_overlay_check(2, 2, 0, 1, PDEV_OVERLAY);
2102 EXPECT_END(KERN_INFO,
2103 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest2/status");
2107 unittest(1, "overlay test %d passed\n", 2);
2110 /* test deactivation of device */
2111 static void __init of_unittest_overlay_3(void)
2115 EXPECT_BEGIN(KERN_INFO,
2116 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest3/status");
2118 /* device should disable */
2119 ret = of_unittest_apply_overlay_check(3, 3, 1, 0, PDEV_OVERLAY);
2121 EXPECT_END(KERN_INFO,
2122 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest3/status");
2127 unittest(1, "overlay test %d passed\n", 3);
2130 /* test activation of a full device node */
2131 static void __init of_unittest_overlay_4(void)
2133 /* device should disable */
2134 if (of_unittest_apply_overlay_check(4, 4, 0, 1, PDEV_OVERLAY))
2137 unittest(1, "overlay test %d passed\n", 4);
2140 /* test overlay apply/revert sequence */
2141 static void __init of_unittest_overlay_5(void)
2145 EXPECT_BEGIN(KERN_INFO,
2146 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest5/status");
2148 /* device should disable */
2149 ret = of_unittest_apply_revert_overlay_check(5, 5, 0, 1, PDEV_OVERLAY);
2151 EXPECT_END(KERN_INFO,
2152 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest5/status");
2157 unittest(1, "overlay test %d passed\n", 5);
2160 /* test overlay application in sequence */
2161 static void __init of_unittest_overlay_6(void)
2163 int i, ov_id[2], ovcs_id;
2164 int overlay_nr = 6, unittest_nr = 6;
2165 int before = 0, after = 1;
2166 const char *overlay_name;
2170 /* unittest device must be in before state */
2171 for (i = 0; i < 2; i++) {
2172 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY)
2174 unittest(0, "%s with device @\"%s\" %s\n",
2175 overlay_name_from_nr(overlay_nr + i),
2176 unittest_path(unittest_nr + i,
2178 !before ? "enabled" : "disabled");
2183 /* apply the overlays */
2185 EXPECT_BEGIN(KERN_INFO,
2186 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest6/status");
2188 overlay_name = overlay_name_from_nr(overlay_nr + 0);
2190 ret = overlay_data_apply(overlay_name, &ovcs_id);
2193 unittest(0, "could not apply overlay \"%s\"\n", overlay_name);
2197 of_unittest_track_overlay(ov_id[0]);
2199 EXPECT_END(KERN_INFO,
2200 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest6/status");
2202 EXPECT_BEGIN(KERN_INFO,
2203 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest7/status");
2205 overlay_name = overlay_name_from_nr(overlay_nr + 1);
2207 ret = overlay_data_apply(overlay_name, &ovcs_id);
2210 unittest(0, "could not apply overlay \"%s\"\n", overlay_name);
2214 of_unittest_track_overlay(ov_id[1]);
2216 EXPECT_END(KERN_INFO,
2217 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest7/status");
2220 for (i = 0; i < 2; i++) {
2221 /* unittest device must be in after state */
2222 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY)
2224 unittest(0, "overlay @\"%s\" failed @\"%s\" %s\n",
2225 overlay_name_from_nr(overlay_nr + i),
2226 unittest_path(unittest_nr + i,
2228 !after ? "enabled" : "disabled");
2233 for (i = 1; i >= 0; i--) {
2235 if (of_overlay_remove(&ovcs_id)) {
2236 unittest(0, "%s failed destroy @\"%s\"\n",
2237 overlay_name_from_nr(overlay_nr + i),
2238 unittest_path(unittest_nr + i,
2242 of_unittest_untrack_overlay(ov_id[i]);
2245 for (i = 0; i < 2; i++) {
2246 /* unittest device must be again in before state */
2247 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY)
2249 unittest(0, "%s with device @\"%s\" %s\n",
2250 overlay_name_from_nr(overlay_nr + i),
2251 unittest_path(unittest_nr + i,
2253 !before ? "enabled" : "disabled");
2258 unittest(1, "overlay test %d passed\n", 6);
2262 /* test overlay application in sequence */
2263 static void __init of_unittest_overlay_8(void)
2265 int i, ov_id[2], ovcs_id;
2266 int overlay_nr = 8, unittest_nr = 8;
2267 const char *overlay_name;
2270 /* we don't care about device state in this test */
2272 EXPECT_BEGIN(KERN_INFO,
2273 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/status");
2275 overlay_name = overlay_name_from_nr(overlay_nr + 0);
2277 ret = overlay_data_apply(overlay_name, &ovcs_id);
2279 unittest(0, "could not apply overlay \"%s\"\n", overlay_name);
2281 EXPECT_END(KERN_INFO,
2282 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/status");
2288 of_unittest_track_overlay(ov_id[0]);
2290 overlay_name = overlay_name_from_nr(overlay_nr + 1);
2292 EXPECT_BEGIN(KERN_INFO,
2293 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/property-foo");
2295 /* apply the overlays */
2296 ret = overlay_data_apply(overlay_name, &ovcs_id);
2298 EXPECT_END(KERN_INFO,
2299 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/property-foo");
2302 unittest(0, "could not apply overlay \"%s\"\n", overlay_name);
2307 of_unittest_track_overlay(ov_id[1]);
2309 /* now try to remove first overlay (it should fail) */
2312 EXPECT_BEGIN(KERN_INFO,
2313 "OF: overlay: node_overlaps_later_cs: #6 overlaps with #7 @/testcase-data/overlay-node/test-bus/test-unittest8");
2315 EXPECT_BEGIN(KERN_INFO,
2316 "OF: overlay: overlay #6 is not topmost");
2318 ret = of_overlay_remove(&ovcs_id);
2320 EXPECT_END(KERN_INFO,
2321 "OF: overlay: overlay #6 is not topmost");
2323 EXPECT_END(KERN_INFO,
2324 "OF: overlay: node_overlaps_later_cs: #6 overlaps with #7 @/testcase-data/overlay-node/test-bus/test-unittest8");
2327 unittest(0, "%s was destroyed @\"%s\"\n",
2328 overlay_name_from_nr(overlay_nr + 0),
2329 unittest_path(unittest_nr,
2334 /* removing them in order should work */
2335 for (i = 1; i >= 0; i--) {
2337 if (of_overlay_remove(&ovcs_id)) {
2338 unittest(0, "%s not destroyed @\"%s\"\n",
2339 overlay_name_from_nr(overlay_nr + i),
2340 unittest_path(unittest_nr,
2344 of_unittest_untrack_overlay(ov_id[i]);
2347 unittest(1, "overlay test %d passed\n", 8);
2350 /* test insertion of a bus with parent devices */
2351 static void __init of_unittest_overlay_10(void)
2356 /* device should disable */
2357 ret = of_unittest_apply_overlay_check(10, 10, 0, 1, PDEV_OVERLAY);
2359 if (unittest(ret == 0,
2360 "overlay test %d failed; overlay application\n", 10))
2363 child_path = kasprintf(GFP_KERNEL, "%s/test-unittest101",
2364 unittest_path(10, PDEV_OVERLAY));
2365 if (unittest(child_path, "overlay test %d failed; kasprintf\n", 10))
2368 ret = of_path_device_type_exists(child_path, PDEV_OVERLAY);
2371 unittest(ret, "overlay test %d failed; no child device\n", 10);
2374 /* test insertion of a bus with parent devices (and revert) */
2375 static void __init of_unittest_overlay_11(void)
2379 /* device should disable */
2380 ret = of_unittest_apply_revert_overlay_check(11, 11, 0, 1,
2383 unittest(ret == 0, "overlay test %d failed; overlay apply\n", 11);
2386 #if IS_BUILTIN(CONFIG_I2C) && IS_ENABLED(CONFIG_OF_OVERLAY)
2388 struct unittest_i2c_bus_data {
2389 struct platform_device *pdev;
2390 struct i2c_adapter adap;
2393 static int unittest_i2c_master_xfer(struct i2c_adapter *adap,
2394 struct i2c_msg *msgs, int num)
2396 struct unittest_i2c_bus_data *std = i2c_get_adapdata(adap);
2403 static u32 unittest_i2c_functionality(struct i2c_adapter *adap)
2405 return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
2408 static const struct i2c_algorithm unittest_i2c_algo = {
2409 .master_xfer = unittest_i2c_master_xfer,
2410 .functionality = unittest_i2c_functionality,
2413 static int unittest_i2c_bus_probe(struct platform_device *pdev)
2415 struct device *dev = &pdev->dev;
2416 struct device_node *np = dev->of_node;
2417 struct unittest_i2c_bus_data *std;
2418 struct i2c_adapter *adap;
2422 dev_err(dev, "No OF data for device\n");
2427 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2429 std = devm_kzalloc(dev, sizeof(*std), GFP_KERNEL);
2433 /* link them together */
2435 platform_set_drvdata(pdev, std);
2438 i2c_set_adapdata(adap, std);
2440 strlcpy(adap->name, pdev->name, sizeof(adap->name));
2441 adap->class = I2C_CLASS_DEPRECATED;
2442 adap->algo = &unittest_i2c_algo;
2443 adap->dev.parent = dev;
2444 adap->dev.of_node = dev->of_node;
2445 adap->timeout = 5 * HZ;
2448 ret = i2c_add_numbered_adapter(adap);
2450 dev_err(dev, "Failed to add I2C adapter\n");
2457 static int unittest_i2c_bus_remove(struct platform_device *pdev)
2459 struct device *dev = &pdev->dev;
2460 struct device_node *np = dev->of_node;
2461 struct unittest_i2c_bus_data *std = platform_get_drvdata(pdev);
2463 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2464 i2c_del_adapter(&std->adap);
2469 static const struct of_device_id unittest_i2c_bus_match[] = {
2470 { .compatible = "unittest-i2c-bus", },
2474 static struct platform_driver unittest_i2c_bus_driver = {
2475 .probe = unittest_i2c_bus_probe,
2476 .remove = unittest_i2c_bus_remove,
2478 .name = "unittest-i2c-bus",
2479 .of_match_table = of_match_ptr(unittest_i2c_bus_match),
2483 static int unittest_i2c_dev_probe(struct i2c_client *client,
2484 const struct i2c_device_id *id)
2486 struct device *dev = &client->dev;
2487 struct device_node *np = client->dev.of_node;
2490 dev_err(dev, "No OF node\n");
2494 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2499 static int unittest_i2c_dev_remove(struct i2c_client *client)
2501 struct device *dev = &client->dev;
2502 struct device_node *np = client->dev.of_node;
2504 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2508 static const struct i2c_device_id unittest_i2c_dev_id[] = {
2509 { .name = "unittest-i2c-dev" },
2513 static struct i2c_driver unittest_i2c_dev_driver = {
2515 .name = "unittest-i2c-dev",
2517 .probe = unittest_i2c_dev_probe,
2518 .remove = unittest_i2c_dev_remove,
2519 .id_table = unittest_i2c_dev_id,
2522 #if IS_BUILTIN(CONFIG_I2C_MUX)
2524 static int unittest_i2c_mux_select_chan(struct i2c_mux_core *muxc, u32 chan)
2529 static int unittest_i2c_mux_probe(struct i2c_client *client,
2530 const struct i2c_device_id *id)
2533 struct device *dev = &client->dev;
2534 struct i2c_adapter *adap = client->adapter;
2535 struct device_node *np = client->dev.of_node, *child;
2536 struct i2c_mux_core *muxc;
2539 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2542 dev_err(dev, "No OF node\n");
2547 for_each_child_of_node(np, child) {
2548 if (of_property_read_u32(child, "reg", ®))
2550 if (max_reg == (u32)-1 || reg > max_reg)
2553 nchans = max_reg == (u32)-1 ? 0 : max_reg + 1;
2555 dev_err(dev, "No channels\n");
2559 muxc = i2c_mux_alloc(adap, dev, nchans, 0, 0,
2560 unittest_i2c_mux_select_chan, NULL);
2563 for (i = 0; i < nchans; i++) {
2564 if (i2c_mux_add_adapter(muxc, 0, i, 0)) {
2565 dev_err(dev, "Failed to register mux #%d\n", i);
2566 i2c_mux_del_adapters(muxc);
2571 i2c_set_clientdata(client, muxc);
2576 static int unittest_i2c_mux_remove(struct i2c_client *client)
2578 struct device *dev = &client->dev;
2579 struct device_node *np = client->dev.of_node;
2580 struct i2c_mux_core *muxc = i2c_get_clientdata(client);
2582 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2583 i2c_mux_del_adapters(muxc);
2587 static const struct i2c_device_id unittest_i2c_mux_id[] = {
2588 { .name = "unittest-i2c-mux" },
2592 static struct i2c_driver unittest_i2c_mux_driver = {
2594 .name = "unittest-i2c-mux",
2596 .probe = unittest_i2c_mux_probe,
2597 .remove = unittest_i2c_mux_remove,
2598 .id_table = unittest_i2c_mux_id,
2603 static int of_unittest_overlay_i2c_init(void)
2607 ret = i2c_add_driver(&unittest_i2c_dev_driver);
2608 if (unittest(ret == 0,
2609 "could not register unittest i2c device driver\n"))
2612 ret = platform_driver_register(&unittest_i2c_bus_driver);
2614 if (unittest(ret == 0,
2615 "could not register unittest i2c bus driver\n"))
2618 #if IS_BUILTIN(CONFIG_I2C_MUX)
2620 EXPECT_BEGIN(KERN_INFO,
2621 "i2c i2c-1: Added multiplexed i2c bus 2");
2623 ret = i2c_add_driver(&unittest_i2c_mux_driver);
2625 EXPECT_END(KERN_INFO,
2626 "i2c i2c-1: Added multiplexed i2c bus 2");
2628 if (unittest(ret == 0,
2629 "could not register unittest i2c mux driver\n"))
2636 static void of_unittest_overlay_i2c_cleanup(void)
2638 #if IS_BUILTIN(CONFIG_I2C_MUX)
2639 i2c_del_driver(&unittest_i2c_mux_driver);
2641 platform_driver_unregister(&unittest_i2c_bus_driver);
2642 i2c_del_driver(&unittest_i2c_dev_driver);
2645 static void __init of_unittest_overlay_i2c_12(void)
2649 /* device should enable */
2650 EXPECT_BEGIN(KERN_INFO,
2651 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest12/status");
2653 ret = of_unittest_apply_overlay_check(12, 12, 0, 1, I2C_OVERLAY);
2655 EXPECT_END(KERN_INFO,
2656 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest12/status");
2661 unittest(1, "overlay test %d passed\n", 12);
2664 /* test deactivation of device */
2665 static void __init of_unittest_overlay_i2c_13(void)
2669 EXPECT_BEGIN(KERN_INFO,
2670 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest13/status");
2672 /* device should disable */
2673 ret = of_unittest_apply_overlay_check(13, 13, 1, 0, I2C_OVERLAY);
2675 EXPECT_END(KERN_INFO,
2676 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest13/status");
2681 unittest(1, "overlay test %d passed\n", 13);
2684 /* just check for i2c mux existence */
2685 static void of_unittest_overlay_i2c_14(void)
2689 static void __init of_unittest_overlay_i2c_15(void)
2693 /* device should enable */
2694 EXPECT_BEGIN(KERN_INFO,
2695 "i2c i2c-1: Added multiplexed i2c bus 3");
2697 ret = of_unittest_apply_overlay_check(15, 15, 0, 1, I2C_OVERLAY);
2699 EXPECT_END(KERN_INFO,
2700 "i2c i2c-1: Added multiplexed i2c bus 3");
2705 unittest(1, "overlay test %d passed\n", 15);
2710 static inline void of_unittest_overlay_i2c_14(void) { }
2711 static inline void of_unittest_overlay_i2c_15(void) { }
2715 static void __init of_unittest_overlay(void)
2717 struct device_node *bus_np = NULL;
2719 if (platform_driver_register(&unittest_driver)) {
2720 unittest(0, "could not register unittest driver\n");
2724 bus_np = of_find_node_by_path(bus_path);
2725 if (bus_np == NULL) {
2726 unittest(0, "could not find bus_path \"%s\"\n", bus_path);
2730 if (of_platform_default_populate(bus_np, NULL, NULL)) {
2731 unittest(0, "could not populate bus @ \"%s\"\n", bus_path);
2735 if (!of_unittest_device_exists(100, PDEV_OVERLAY)) {
2736 unittest(0, "could not find unittest0 @ \"%s\"\n",
2737 unittest_path(100, PDEV_OVERLAY));
2741 if (of_unittest_device_exists(101, PDEV_OVERLAY)) {
2742 unittest(0, "unittest1 @ \"%s\" should not exist\n",
2743 unittest_path(101, PDEV_OVERLAY));
2747 unittest(1, "basic infrastructure of overlays passed");
2749 /* tests in sequence */
2750 of_unittest_overlay_0();
2751 of_unittest_overlay_1();
2752 of_unittest_overlay_2();
2753 of_unittest_overlay_3();
2754 of_unittest_overlay_4();
2755 of_unittest_overlay_5();
2756 of_unittest_overlay_6();
2757 of_unittest_overlay_8();
2759 of_unittest_overlay_10();
2760 of_unittest_overlay_11();
2762 #if IS_BUILTIN(CONFIG_I2C)
2763 if (unittest(of_unittest_overlay_i2c_init() == 0, "i2c init failed\n"))
2766 of_unittest_overlay_i2c_12();
2767 of_unittest_overlay_i2c_13();
2768 of_unittest_overlay_i2c_14();
2769 of_unittest_overlay_i2c_15();
2771 of_unittest_overlay_i2c_cleanup();
2774 of_unittest_overlay_gpio();
2776 of_unittest_destroy_tracked_overlays();
2779 of_node_put(bus_np);
2783 static inline void __init of_unittest_overlay(void) { }
2786 #ifdef CONFIG_OF_OVERLAY
2789 * __dtb_ot_begin[] and __dtb_ot_end[] are created by cmd_dt_S_dtb
2790 * in scripts/Makefile.lib
2793 #define OVERLAY_INFO_EXTERN(name) \
2794 extern uint8_t __dtb_##name##_begin[]; \
2795 extern uint8_t __dtb_##name##_end[]
2797 #define OVERLAY_INFO(overlay_name, expected) \
2798 { .dtb_begin = __dtb_##overlay_name##_begin, \
2799 .dtb_end = __dtb_##overlay_name##_end, \
2800 .expected_result = expected, \
2801 .name = #overlay_name, \
2804 struct overlay_info {
2807 int expected_result;
2812 OVERLAY_INFO_EXTERN(overlay_base);
2813 OVERLAY_INFO_EXTERN(overlay);
2814 OVERLAY_INFO_EXTERN(overlay_0);
2815 OVERLAY_INFO_EXTERN(overlay_1);
2816 OVERLAY_INFO_EXTERN(overlay_2);
2817 OVERLAY_INFO_EXTERN(overlay_3);
2818 OVERLAY_INFO_EXTERN(overlay_4);
2819 OVERLAY_INFO_EXTERN(overlay_5);
2820 OVERLAY_INFO_EXTERN(overlay_6);
2821 OVERLAY_INFO_EXTERN(overlay_7);
2822 OVERLAY_INFO_EXTERN(overlay_8);
2823 OVERLAY_INFO_EXTERN(overlay_9);
2824 OVERLAY_INFO_EXTERN(overlay_10);
2825 OVERLAY_INFO_EXTERN(overlay_11);
2826 OVERLAY_INFO_EXTERN(overlay_12);
2827 OVERLAY_INFO_EXTERN(overlay_13);
2828 OVERLAY_INFO_EXTERN(overlay_15);
2829 OVERLAY_INFO_EXTERN(overlay_gpio_01);
2830 OVERLAY_INFO_EXTERN(overlay_gpio_02a);
2831 OVERLAY_INFO_EXTERN(overlay_gpio_02b);
2832 OVERLAY_INFO_EXTERN(overlay_gpio_03);
2833 OVERLAY_INFO_EXTERN(overlay_gpio_04a);
2834 OVERLAY_INFO_EXTERN(overlay_gpio_04b);
2835 OVERLAY_INFO_EXTERN(overlay_bad_add_dup_node);
2836 OVERLAY_INFO_EXTERN(overlay_bad_add_dup_prop);
2837 OVERLAY_INFO_EXTERN(overlay_bad_phandle);
2838 OVERLAY_INFO_EXTERN(overlay_bad_symbol);
2840 /* entries found by name */
2841 static struct overlay_info overlays[] = {
2842 OVERLAY_INFO(overlay_base, -9999),
2843 OVERLAY_INFO(overlay, 0),
2844 OVERLAY_INFO(overlay_0, 0),
2845 OVERLAY_INFO(overlay_1, 0),
2846 OVERLAY_INFO(overlay_2, 0),
2847 OVERLAY_INFO(overlay_3, 0),
2848 OVERLAY_INFO(overlay_4, 0),
2849 OVERLAY_INFO(overlay_5, 0),
2850 OVERLAY_INFO(overlay_6, 0),
2851 OVERLAY_INFO(overlay_7, 0),
2852 OVERLAY_INFO(overlay_8, 0),
2853 OVERLAY_INFO(overlay_9, 0),
2854 OVERLAY_INFO(overlay_10, 0),
2855 OVERLAY_INFO(overlay_11, 0),
2856 OVERLAY_INFO(overlay_12, 0),
2857 OVERLAY_INFO(overlay_13, 0),
2858 OVERLAY_INFO(overlay_15, 0),
2859 OVERLAY_INFO(overlay_gpio_01, 0),
2860 OVERLAY_INFO(overlay_gpio_02a, 0),
2861 OVERLAY_INFO(overlay_gpio_02b, 0),
2862 OVERLAY_INFO(overlay_gpio_03, 0),
2863 OVERLAY_INFO(overlay_gpio_04a, 0),
2864 OVERLAY_INFO(overlay_gpio_04b, 0),
2865 OVERLAY_INFO(overlay_bad_add_dup_node, -EINVAL),
2866 OVERLAY_INFO(overlay_bad_add_dup_prop, -EINVAL),
2867 OVERLAY_INFO(overlay_bad_phandle, -EINVAL),
2868 OVERLAY_INFO(overlay_bad_symbol, -EINVAL),
2870 {.dtb_begin = NULL, .dtb_end = NULL, .expected_result = 0, .name = NULL}
2873 static struct device_node *overlay_base_root;
2875 static void * __init dt_alloc_memory(u64 size, u64 align)
2877 void *ptr = memblock_alloc(size, align);
2880 panic("%s: Failed to allocate %llu bytes align=0x%llx\n",
2881 __func__, size, align);
2887 * Create base device tree for the overlay unittest.
2889 * This is called from very early boot code.
2891 * Do as much as possible the same way as done in __unflatten_device_tree
2892 * and other early boot steps for the normal FDT so that the overlay base
2893 * unflattened tree will have the same characteristics as the real tree
2894 * (such as having memory allocated by the early allocator). The goal
2895 * is to test "the real thing" as much as possible, and test "test setup
2896 * code" as little as possible.
2898 * Have to stop before resolving phandles, because that uses kmalloc.
2900 void __init unittest_unflatten_overlay_base(void)
2902 struct overlay_info *info;
2907 const char *overlay_name = "overlay_base";
2909 for (info = overlays; info && info->name; info++) {
2910 if (!strcmp(overlay_name, info->name)) {
2916 pr_err("no overlay data for %s\n", overlay_name);
2920 info = &overlays[0];
2922 if (info->expected_result != -9999) {
2923 pr_err("No dtb 'overlay_base' to attach\n");
2927 data_size = info->dtb_end - info->dtb_begin;
2929 pr_err("No dtb 'overlay_base' to attach\n");
2933 size = fdt_totalsize(info->dtb_begin);
2934 if (size != data_size) {
2935 pr_err("dtb 'overlay_base' header totalsize != actual size");
2939 new_fdt = dt_alloc_memory(size, roundup_pow_of_two(FDT_V17_SIZE));
2941 pr_err("alloc for dtb 'overlay_base' failed");
2945 memcpy(new_fdt, info->dtb_begin, size);
2947 __unflatten_device_tree(new_fdt, NULL, &overlay_base_root,
2948 dt_alloc_memory, true);
2952 * The purpose of of_unittest_overlay_data_add is to add an
2953 * overlay in the normal fashion. This is a test of the whole
2954 * picture, instead of testing individual elements.
2956 * A secondary purpose is to be able to verify that the contents of
2957 * /proc/device-tree/ contains the updated structure and values from
2958 * the overlay. That must be verified separately in user space.
2960 * Return 0 on unexpected error.
2962 static int __init overlay_data_apply(const char *overlay_name, int *overlay_id)
2964 struct overlay_info *info;
2969 for (info = overlays; info && info->name; info++) {
2970 if (!strcmp(overlay_name, info->name)) {
2976 pr_err("no overlay data for %s\n", overlay_name);
2980 size = info->dtb_end - info->dtb_begin;
2982 pr_err("no overlay data for %s\n", overlay_name);
2984 ret = of_overlay_fdt_apply(info->dtb_begin, size, &info->overlay_id);
2986 *overlay_id = info->overlay_id;
2990 pr_debug("%s applied\n", overlay_name);
2993 if (ret != info->expected_result)
2994 pr_err("of_overlay_fdt_apply() expected %d, ret=%d, %s\n",
2995 info->expected_result, ret, overlay_name);
2997 return (ret == info->expected_result);
3001 * The purpose of of_unittest_overlay_high_level is to add an overlay
3002 * in the normal fashion. This is a test of the whole picture,
3003 * instead of individual elements.
3005 * The first part of the function is _not_ normal overlay usage; it is
3006 * finishing splicing the base overlay device tree into the live tree.
3008 static __init void of_unittest_overlay_high_level(void)
3010 struct device_node *last_sibling;
3011 struct device_node *np;
3012 struct device_node *of_symbols;
3013 struct device_node *overlay_base_symbols;
3014 struct device_node **pprev;
3015 struct property *prop;
3018 if (!overlay_base_root) {
3019 unittest(0, "overlay_base_root not initialized\n");
3024 * Could not fixup phandles in unittest_unflatten_overlay_base()
3025 * because kmalloc() was not yet available.
3027 of_overlay_mutex_lock();
3028 of_resolve_phandles(overlay_base_root);
3029 of_overlay_mutex_unlock();
3033 * do not allow overlay_base to duplicate any node already in
3034 * tree, this greatly simplifies the code
3038 * remove overlay_base_root node "__local_fixups", after
3039 * being used by of_resolve_phandles()
3041 pprev = &overlay_base_root->child;
3042 for (np = overlay_base_root->child; np; np = np->sibling) {
3043 if (of_node_name_eq(np, "__local_fixups__")) {
3044 *pprev = np->sibling;
3047 pprev = &np->sibling;
3050 /* remove overlay_base_root node "__symbols__" if in live tree */
3051 of_symbols = of_get_child_by_name(of_root, "__symbols__");
3053 /* will have to graft properties from node into live tree */
3054 pprev = &overlay_base_root->child;
3055 for (np = overlay_base_root->child; np; np = np->sibling) {
3056 if (of_node_name_eq(np, "__symbols__")) {
3057 overlay_base_symbols = np;
3058 *pprev = np->sibling;
3061 pprev = &np->sibling;
3065 for_each_child_of_node(overlay_base_root, np) {
3066 struct device_node *base_child;
3067 for_each_child_of_node(of_root, base_child) {
3068 if (!strcmp(np->full_name, base_child->full_name)) {
3069 unittest(0, "illegal node name in overlay_base %pOFn",
3077 * overlay 'overlay_base' is not allowed to have root
3078 * properties, so only need to splice nodes into main device tree.
3080 * root node of *overlay_base_root will not be freed, it is lost
3084 for (np = overlay_base_root->child; np; np = np->sibling)
3085 np->parent = of_root;
3087 mutex_lock(&of_mutex);
3089 for (last_sibling = np = of_root->child; np; np = np->sibling)
3093 last_sibling->sibling = overlay_base_root->child;
3095 of_root->child = overlay_base_root->child;
3097 for_each_of_allnodes_from(overlay_base_root, np)
3098 __of_attach_node_sysfs(np);
3101 struct property *new_prop;
3102 for_each_property_of_node(overlay_base_symbols, prop) {
3104 new_prop = __of_prop_dup(prop, GFP_KERNEL);
3106 unittest(0, "__of_prop_dup() of '%s' from overlay_base node __symbols__",
3110 if (__of_add_property(of_symbols, new_prop)) {
3111 kfree(new_prop->name);
3112 kfree(new_prop->value);
3114 /* "name" auto-generated by unflatten */
3115 if (!strcmp(prop->name, "name"))
3117 unittest(0, "duplicate property '%s' in overlay_base node __symbols__",
3121 if (__of_add_property_sysfs(of_symbols, new_prop)) {
3122 unittest(0, "unable to add property '%s' in overlay_base node __symbols__ to sysfs",
3129 mutex_unlock(&of_mutex);
3132 /* now do the normal overlay usage test */
3134 EXPECT_BEGIN(KERN_ERR,
3135 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/substation@100/status");
3136 EXPECT_BEGIN(KERN_ERR,
3137 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/status");
3138 EXPECT_BEGIN(KERN_ERR,
3139 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@30/incline-up");
3140 EXPECT_BEGIN(KERN_ERR,
3141 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@40/incline-up");
3142 EXPECT_BEGIN(KERN_ERR,
3143 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/status");
3144 EXPECT_BEGIN(KERN_ERR,
3145 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/color");
3146 EXPECT_BEGIN(KERN_ERR,
3147 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/rate");
3148 EXPECT_BEGIN(KERN_ERR,
3149 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/hvac_2");
3150 EXPECT_BEGIN(KERN_ERR,
3151 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200");
3152 EXPECT_BEGIN(KERN_ERR,
3153 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_left");
3154 EXPECT_BEGIN(KERN_ERR,
3155 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_right");
3157 ret = overlay_data_apply("overlay", NULL);
3159 EXPECT_END(KERN_ERR,
3160 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_right");
3161 EXPECT_END(KERN_ERR,
3162 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_left");
3163 EXPECT_END(KERN_ERR,
3164 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200");
3165 EXPECT_END(KERN_ERR,
3166 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/hvac_2");
3167 EXPECT_END(KERN_ERR,
3168 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/rate");
3169 EXPECT_END(KERN_ERR,
3170 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/color");
3171 EXPECT_END(KERN_ERR,
3172 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/status");
3173 EXPECT_END(KERN_ERR,
3174 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@40/incline-up");
3175 EXPECT_END(KERN_ERR,
3176 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@30/incline-up");
3177 EXPECT_END(KERN_ERR,
3178 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/status");
3179 EXPECT_END(KERN_ERR,
3180 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/substation@100/status");
3182 unittest(ret, "Adding overlay 'overlay' failed\n");
3184 EXPECT_BEGIN(KERN_ERR,
3185 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/controller");
3186 EXPECT_BEGIN(KERN_ERR,
3187 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/controller/name");
3189 unittest(overlay_data_apply("overlay_bad_add_dup_node", NULL),
3190 "Adding overlay 'overlay_bad_add_dup_node' failed\n");
3192 EXPECT_END(KERN_ERR,
3193 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/controller/name");
3194 EXPECT_END(KERN_ERR,
3195 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/controller");
3197 EXPECT_BEGIN(KERN_ERR,
3198 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/electric");
3199 EXPECT_BEGIN(KERN_ERR,
3200 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/rpm_avail");
3201 EXPECT_BEGIN(KERN_ERR,
3202 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/name");
3204 unittest(overlay_data_apply("overlay_bad_add_dup_prop", NULL),
3205 "Adding overlay 'overlay_bad_add_dup_prop' failed\n");
3207 EXPECT_END(KERN_ERR,
3208 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/name");
3209 EXPECT_END(KERN_ERR,
3210 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/rpm_avail");
3211 EXPECT_END(KERN_ERR,
3212 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/electric");
3214 unittest(overlay_data_apply("overlay_bad_phandle", NULL),
3215 "Adding overlay 'overlay_bad_phandle' failed\n");
3217 unittest(overlay_data_apply("overlay_bad_symbol", NULL),
3218 "Adding overlay 'overlay_bad_symbol' failed\n");
3223 mutex_unlock(&of_mutex);
3228 static inline __init void of_unittest_overlay_high_level(void) {}
3232 static int __init of_unittest(void)
3234 struct device_node *np;
3237 pr_info("start of unittest - you will see error messages\n");
3239 /* adding data for unittest */
3241 if (IS_ENABLED(CONFIG_UML))
3242 unittest_unflatten_overlay_base();
3244 res = unittest_data_add();
3248 of_aliases = of_find_node_by_path("/aliases");
3250 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
3252 pr_info("No testcase data in device tree; not running tests\n");
3257 of_unittest_check_tree_linkage();
3258 of_unittest_check_phandles();
3259 of_unittest_find_node_by_name();
3260 of_unittest_dynamic();
3261 of_unittest_parse_phandle_with_args();
3262 of_unittest_parse_phandle_with_args_map();
3263 of_unittest_printf();
3264 of_unittest_property_string();
3265 of_unittest_property_copy();
3266 of_unittest_changeset();
3267 of_unittest_parse_interrupts();
3268 of_unittest_parse_interrupts_extended();
3269 of_unittest_parse_dma_ranges();
3270 of_unittest_pci_dma_ranges();
3271 of_unittest_match_node();
3272 of_unittest_platform_populate();
3273 of_unittest_overlay();
3275 /* Double check linkage after removing testcase data */
3276 of_unittest_check_tree_linkage();
3278 of_unittest_overlay_high_level();
3280 pr_info("end of unittest - %i passed, %i failed\n",
3281 unittest_results.passed, unittest_results.failed);
3285 late_initcall(of_unittest);