Commit | Line | Data |
---|---|---|
53a42093 GL |
1 | /* |
2 | * Self tests for device tree subsystem | |
3 | */ | |
4 | ||
cabb7d5b | 5 | #define pr_fmt(fmt) "### dt-test ### " fmt |
53a42093 GL |
6 | |
7 | #include <linux/clk.h> | |
8 | #include <linux/err.h> | |
9 | #include <linux/errno.h> | |
841ec213 | 10 | #include <linux/hashtable.h> |
53a42093 GL |
11 | #include <linux/module.h> |
12 | #include <linux/of.h> | |
ae9304c9 | 13 | #include <linux/of_fdt.h> |
a9f10ca7 | 14 | #include <linux/of_irq.h> |
82c0f589 | 15 | #include <linux/of_platform.h> |
53a42093 GL |
16 | #include <linux/list.h> |
17 | #include <linux/mutex.h> | |
18 | #include <linux/slab.h> | |
19 | #include <linux/device.h> | |
177d271c PA |
20 | #include <linux/platform_device.h> |
21 | #include <linux/of_platform.h> | |
53a42093 | 22 | |
d5e75500 PA |
23 | #include <linux/i2c.h> |
24 | #include <linux/i2c-mux.h> | |
25 | ||
492a22ac PA |
26 | #include <linux/bitops.h> |
27 | ||
69843396 PA |
28 | #include "of_private.h" |
29 | ||
9697a559 | 30 | static struct unittest_results { |
a9f10ca7 GL |
31 | int passed; |
32 | int failed; | |
9697a559 | 33 | } unittest_results; |
a9f10ca7 | 34 | |
9697a559 | 35 | #define unittest(result, fmt, ...) ({ \ |
851da976 GL |
36 | bool failed = !(result); \ |
37 | if (failed) { \ | |
9697a559 | 38 | unittest_results.failed++; \ |
a9f10ca7 | 39 | pr_err("FAIL %s():%i " fmt, __func__, __LINE__, ##__VA_ARGS__); \ |
cabb7d5b | 40 | } else { \ |
9697a559 | 41 | unittest_results.passed++; \ |
a9f10ca7 | 42 | pr_debug("pass %s():%i\n", __func__, __LINE__); \ |
cabb7d5b | 43 | } \ |
851da976 GL |
44 | failed; \ |
45 | }) | |
53a42093 | 46 | |
9697a559 | 47 | static void __init of_unittest_find_node_by_name(void) |
ae91ff72 GL |
48 | { |
49 | struct device_node *np; | |
75c28c09 | 50 | const char *options; |
ae91ff72 GL |
51 | |
52 | np = of_find_node_by_path("/testcase-data"); | |
9697a559 | 53 | unittest(np && !strcmp("/testcase-data", np->full_name), |
ae91ff72 GL |
54 | "find /testcase-data failed\n"); |
55 | of_node_put(np); | |
56 | ||
57 | /* Test if trailing '/' works */ | |
58 | np = of_find_node_by_path("/testcase-data/"); | |
9697a559 | 59 | unittest(!np, "trailing '/' on /testcase-data/ should fail\n"); |
ae91ff72 GL |
60 | |
61 | np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); | |
9697a559 | 62 | unittest(np && !strcmp("/testcase-data/phandle-tests/consumer-a", np->full_name), |
ae91ff72 GL |
63 | "find /testcase-data/phandle-tests/consumer-a failed\n"); |
64 | of_node_put(np); | |
65 | ||
66 | np = of_find_node_by_path("testcase-alias"); | |
9697a559 | 67 | unittest(np && !strcmp("/testcase-data", np->full_name), |
ae91ff72 GL |
68 | "find testcase-alias failed\n"); |
69 | of_node_put(np); | |
70 | ||
71 | /* Test if trailing '/' works on aliases */ | |
72 | np = of_find_node_by_path("testcase-alias/"); | |
9697a559 | 73 | unittest(!np, "trailing '/' on testcase-alias/ should fail\n"); |
ae91ff72 GL |
74 | |
75 | np = of_find_node_by_path("testcase-alias/phandle-tests/consumer-a"); | |
9697a559 | 76 | unittest(np && !strcmp("/testcase-data/phandle-tests/consumer-a", np->full_name), |
ae91ff72 GL |
77 | "find testcase-alias/phandle-tests/consumer-a failed\n"); |
78 | of_node_put(np); | |
79 | ||
80 | np = of_find_node_by_path("/testcase-data/missing-path"); | |
9697a559 | 81 | unittest(!np, "non-existent path returned node %s\n", np->full_name); |
ae91ff72 GL |
82 | of_node_put(np); |
83 | ||
84 | np = of_find_node_by_path("missing-alias"); | |
9697a559 | 85 | unittest(!np, "non-existent alias returned node %s\n", np->full_name); |
ae91ff72 GL |
86 | of_node_put(np); |
87 | ||
88 | np = of_find_node_by_path("testcase-alias/missing-path"); | |
9697a559 | 89 | unittest(!np, "non-existent alias with relative path returned node %s\n", np->full_name); |
ae91ff72 | 90 | of_node_put(np); |
75c28c09 LL |
91 | |
92 | np = of_find_node_opts_by_path("/testcase-data:testoption", &options); | |
9697a559 | 93 | unittest(np && !strcmp("testoption", options), |
75c28c09 LL |
94 | "option path test failed\n"); |
95 | of_node_put(np); | |
96 | ||
8cbba1ab | 97 | np = of_find_node_opts_by_path("/testcase-data:test/option", &options); |
9697a559 | 98 | unittest(np && !strcmp("test/option", options), |
8cbba1ab PH |
99 | "option path test, subcase #1 failed\n"); |
100 | of_node_put(np); | |
101 | ||
5ca1b0dd | 102 | np = of_find_node_opts_by_path("/testcase-data/testcase-device1:test/option", &options); |
9697a559 | 103 | unittest(np && !strcmp("test/option", options), |
5ca1b0dd BN |
104 | "option path test, subcase #2 failed\n"); |
105 | of_node_put(np); | |
106 | ||
75c28c09 | 107 | np = of_find_node_opts_by_path("/testcase-data:testoption", NULL); |
9697a559 | 108 | unittest(np, "NULL option path test failed\n"); |
75c28c09 LL |
109 | of_node_put(np); |
110 | ||
111 | np = of_find_node_opts_by_path("testcase-alias:testaliasoption", | |
112 | &options); | |
9697a559 | 113 | unittest(np && !strcmp("testaliasoption", options), |
75c28c09 LL |
114 | "option alias path test failed\n"); |
115 | of_node_put(np); | |
116 | ||
8cbba1ab PH |
117 | np = of_find_node_opts_by_path("testcase-alias:test/alias/option", |
118 | &options); | |
9697a559 | 119 | unittest(np && !strcmp("test/alias/option", options), |
8cbba1ab PH |
120 | "option alias path test, subcase #1 failed\n"); |
121 | of_node_put(np); | |
122 | ||
75c28c09 | 123 | np = of_find_node_opts_by_path("testcase-alias:testaliasoption", NULL); |
9697a559 | 124 | unittest(np, "NULL option alias path test failed\n"); |
75c28c09 LL |
125 | of_node_put(np); |
126 | ||
127 | options = "testoption"; | |
128 | np = of_find_node_opts_by_path("testcase-alias", &options); | |
9697a559 | 129 | unittest(np && !options, "option clearing test failed\n"); |
75c28c09 LL |
130 | of_node_put(np); |
131 | ||
132 | options = "testoption"; | |
133 | np = of_find_node_opts_by_path("/", &options); | |
9697a559 | 134 | unittest(np && !options, "option clearing root node test failed\n"); |
75c28c09 | 135 | of_node_put(np); |
ae91ff72 GL |
136 | } |
137 | ||
9697a559 | 138 | static void __init of_unittest_dynamic(void) |
7e66c5c7 GL |
139 | { |
140 | struct device_node *np; | |
141 | struct property *prop; | |
142 | ||
143 | np = of_find_node_by_path("/testcase-data"); | |
144 | if (!np) { | |
145 | pr_err("missing testcase data\n"); | |
146 | return; | |
147 | } | |
148 | ||
149 | /* Array of 4 properties for the purpose of testing */ | |
150 | prop = kzalloc(sizeof(*prop) * 4, GFP_KERNEL); | |
151 | if (!prop) { | |
9697a559 | 152 | unittest(0, "kzalloc() failed\n"); |
7e66c5c7 GL |
153 | return; |
154 | } | |
155 | ||
156 | /* Add a new property - should pass*/ | |
157 | prop->name = "new-property"; | |
158 | prop->value = "new-property-data"; | |
159 | prop->length = strlen(prop->value); | |
9697a559 | 160 | unittest(of_add_property(np, prop) == 0, "Adding a new property failed\n"); |
7e66c5c7 GL |
161 | |
162 | /* Try to add an existing property - should fail */ | |
163 | prop++; | |
164 | prop->name = "new-property"; | |
165 | prop->value = "new-property-data-should-fail"; | |
166 | prop->length = strlen(prop->value); | |
9697a559 | 167 | unittest(of_add_property(np, prop) != 0, |
7e66c5c7 GL |
168 | "Adding an existing property should have failed\n"); |
169 | ||
170 | /* Try to modify an existing property - should pass */ | |
171 | prop->value = "modify-property-data-should-pass"; | |
172 | prop->length = strlen(prop->value); | |
9697a559 | 173 | unittest(of_update_property(np, prop) == 0, |
7e66c5c7 GL |
174 | "Updating an existing property should have passed\n"); |
175 | ||
176 | /* Try to modify non-existent property - should pass*/ | |
177 | prop++; | |
178 | prop->name = "modify-property"; | |
179 | prop->value = "modify-missing-property-data-should-pass"; | |
180 | prop->length = strlen(prop->value); | |
9697a559 | 181 | unittest(of_update_property(np, prop) == 0, |
7e66c5c7 GL |
182 | "Updating a missing property should have passed\n"); |
183 | ||
184 | /* Remove property - should pass */ | |
9697a559 | 185 | unittest(of_remove_property(np, prop) == 0, |
7e66c5c7 GL |
186 | "Removing a property should have passed\n"); |
187 | ||
188 | /* Adding very large property - should pass */ | |
189 | prop++; | |
190 | prop->name = "large-property-PAGE_SIZEx8"; | |
191 | prop->length = PAGE_SIZE * 8; | |
192 | prop->value = kzalloc(prop->length, GFP_KERNEL); | |
9697a559 | 193 | unittest(prop->value != NULL, "Unable to allocate large buffer\n"); |
7e66c5c7 | 194 | if (prop->value) |
9697a559 | 195 | unittest(of_add_property(np, prop) == 0, |
7e66c5c7 GL |
196 | "Adding a large property should have passed\n"); |
197 | } | |
198 | ||
9697a559 | 199 | static int __init of_unittest_check_node_linkage(struct device_node *np) |
f2051d6a | 200 | { |
5063e25a | 201 | struct device_node *child; |
f2051d6a GL |
202 | int count = 0, rc; |
203 | ||
204 | for_each_child_of_node(np, child) { | |
205 | if (child->parent != np) { | |
206 | pr_err("Child node %s links to wrong parent %s\n", | |
207 | child->name, np->name); | |
208 | return -EINVAL; | |
209 | } | |
210 | ||
9697a559 | 211 | rc = of_unittest_check_node_linkage(child); |
f2051d6a GL |
212 | if (rc < 0) |
213 | return rc; | |
214 | count += rc; | |
215 | } | |
216 | ||
217 | return count + 1; | |
218 | } | |
219 | ||
9697a559 | 220 | static void __init of_unittest_check_tree_linkage(void) |
f2051d6a GL |
221 | { |
222 | struct device_node *np; | |
223 | int allnode_count = 0, child_count; | |
224 | ||
5063e25a | 225 | if (!of_root) |
f2051d6a GL |
226 | return; |
227 | ||
228 | for_each_of_allnodes(np) | |
229 | allnode_count++; | |
9697a559 | 230 | child_count = of_unittest_check_node_linkage(of_root); |
f2051d6a | 231 | |
9697a559 WL |
232 | unittest(child_count > 0, "Device node data structure is corrupted\n"); |
233 | unittest(child_count == allnode_count, "allnodes list size (%i) doesn't match" | |
f2051d6a GL |
234 | "sibling lists size (%i)\n", allnode_count, child_count); |
235 | pr_debug("allnodes list size (%i); sibling lists size (%i)\n", allnode_count, child_count); | |
236 | } | |
237 | ||
841ec213 GL |
238 | struct node_hash { |
239 | struct hlist_node node; | |
240 | struct device_node *np; | |
241 | }; | |
242 | ||
2118f4b8 | 243 | static DEFINE_HASHTABLE(phandle_ht, 8); |
9697a559 | 244 | static void __init of_unittest_check_phandles(void) |
841ec213 GL |
245 | { |
246 | struct device_node *np; | |
247 | struct node_hash *nh; | |
248 | struct hlist_node *tmp; | |
249 | int i, dup_count = 0, phandle_count = 0; | |
841ec213 | 250 | |
841ec213 GL |
251 | for_each_of_allnodes(np) { |
252 | if (!np->phandle) | |
253 | continue; | |
254 | ||
2118f4b8 | 255 | hash_for_each_possible(phandle_ht, nh, node, np->phandle) { |
841ec213 GL |
256 | if (nh->np->phandle == np->phandle) { |
257 | pr_info("Duplicate phandle! %i used by %s and %s\n", | |
258 | np->phandle, nh->np->full_name, np->full_name); | |
259 | dup_count++; | |
260 | break; | |
261 | } | |
262 | } | |
263 | ||
264 | nh = kzalloc(sizeof(*nh), GFP_KERNEL); | |
265 | if (WARN_ON(!nh)) | |
266 | return; | |
267 | ||
268 | nh->np = np; | |
2118f4b8 | 269 | hash_add(phandle_ht, &nh->node, np->phandle); |
841ec213 GL |
270 | phandle_count++; |
271 | } | |
9697a559 | 272 | unittest(dup_count == 0, "Found %i duplicates in %i phandles\n", |
841ec213 GL |
273 | dup_count, phandle_count); |
274 | ||
275 | /* Clean up */ | |
2118f4b8 | 276 | hash_for_each_safe(phandle_ht, i, tmp, nh, node) { |
841ec213 GL |
277 | hash_del(&nh->node); |
278 | kfree(nh); | |
279 | } | |
280 | } | |
281 | ||
9697a559 | 282 | static void __init of_unittest_parse_phandle_with_args(void) |
53a42093 GL |
283 | { |
284 | struct device_node *np; | |
285 | struct of_phandle_args args; | |
cabb7d5b | 286 | int i, rc; |
53a42093 | 287 | |
53a42093 GL |
288 | np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); |
289 | if (!np) { | |
290 | pr_err("missing testcase data\n"); | |
291 | return; | |
292 | } | |
293 | ||
bd69f73f | 294 | rc = of_count_phandle_with_args(np, "phandle-list", "#phandle-cells"); |
9697a559 | 295 | unittest(rc == 7, "of_count_phandle_with_args() returned %i, expected 7\n", rc); |
bd69f73f | 296 | |
f7f951c2 | 297 | for (i = 0; i < 8; i++) { |
53a42093 GL |
298 | bool passed = true; |
299 | rc = of_parse_phandle_with_args(np, "phandle-list", | |
300 | "#phandle-cells", i, &args); | |
301 | ||
302 | /* Test the values from tests-phandle.dtsi */ | |
303 | switch (i) { | |
304 | case 0: | |
305 | passed &= !rc; | |
306 | passed &= (args.args_count == 1); | |
307 | passed &= (args.args[0] == (i + 1)); | |
308 | break; | |
309 | case 1: | |
310 | passed &= !rc; | |
311 | passed &= (args.args_count == 2); | |
312 | passed &= (args.args[0] == (i + 1)); | |
313 | passed &= (args.args[1] == 0); | |
314 | break; | |
315 | case 2: | |
316 | passed &= (rc == -ENOENT); | |
317 | break; | |
318 | case 3: | |
319 | passed &= !rc; | |
320 | passed &= (args.args_count == 3); | |
321 | passed &= (args.args[0] == (i + 1)); | |
322 | passed &= (args.args[1] == 4); | |
323 | passed &= (args.args[2] == 3); | |
324 | break; | |
325 | case 4: | |
326 | passed &= !rc; | |
327 | passed &= (args.args_count == 2); | |
328 | passed &= (args.args[0] == (i + 1)); | |
329 | passed &= (args.args[1] == 100); | |
330 | break; | |
331 | case 5: | |
332 | passed &= !rc; | |
333 | passed &= (args.args_count == 0); | |
334 | break; | |
335 | case 6: | |
336 | passed &= !rc; | |
337 | passed &= (args.args_count == 1); | |
338 | passed &= (args.args[0] == (i + 1)); | |
339 | break; | |
340 | case 7: | |
cabb7d5b | 341 | passed &= (rc == -ENOENT); |
53a42093 GL |
342 | break; |
343 | default: | |
344 | passed = false; | |
345 | } | |
346 | ||
9697a559 | 347 | unittest(passed, "index %i - data error on node %s rc=%i\n", |
cabb7d5b | 348 | i, args.np->full_name, rc); |
53a42093 GL |
349 | } |
350 | ||
351 | /* Check for missing list property */ | |
352 | rc = of_parse_phandle_with_args(np, "phandle-list-missing", | |
353 | "#phandle-cells", 0, &args); | |
9697a559 | 354 | unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc); |
bd69f73f GL |
355 | rc = of_count_phandle_with_args(np, "phandle-list-missing", |
356 | "#phandle-cells"); | |
9697a559 | 357 | unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc); |
53a42093 GL |
358 | |
359 | /* Check for missing cells property */ | |
360 | rc = of_parse_phandle_with_args(np, "phandle-list", | |
361 | "#phandle-cells-missing", 0, &args); | |
9697a559 | 362 | unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); |
bd69f73f GL |
363 | rc = of_count_phandle_with_args(np, "phandle-list", |
364 | "#phandle-cells-missing"); | |
9697a559 | 365 | unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); |
53a42093 GL |
366 | |
367 | /* Check for bad phandle in list */ | |
368 | rc = of_parse_phandle_with_args(np, "phandle-list-bad-phandle", | |
369 | "#phandle-cells", 0, &args); | |
9697a559 | 370 | unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); |
bd69f73f GL |
371 | rc = of_count_phandle_with_args(np, "phandle-list-bad-phandle", |
372 | "#phandle-cells"); | |
9697a559 | 373 | unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); |
53a42093 GL |
374 | |
375 | /* Check for incorrectly formed argument list */ | |
376 | rc = of_parse_phandle_with_args(np, "phandle-list-bad-args", | |
377 | "#phandle-cells", 1, &args); | |
9697a559 | 378 | unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); |
bd69f73f GL |
379 | rc = of_count_phandle_with_args(np, "phandle-list-bad-args", |
380 | "#phandle-cells"); | |
9697a559 | 381 | unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); |
53a42093 GL |
382 | } |
383 | ||
9697a559 | 384 | static void __init of_unittest_property_string(void) |
7aff0fe3 | 385 | { |
a87fa1d8 | 386 | const char *strings[4]; |
7aff0fe3 GL |
387 | struct device_node *np; |
388 | int rc; | |
389 | ||
7aff0fe3 GL |
390 | np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); |
391 | if (!np) { | |
392 | pr_err("No testcase data in device tree\n"); | |
393 | return; | |
394 | } | |
395 | ||
396 | rc = of_property_match_string(np, "phandle-list-names", "first"); | |
9697a559 | 397 | unittest(rc == 0, "first expected:0 got:%i\n", rc); |
7aff0fe3 | 398 | rc = of_property_match_string(np, "phandle-list-names", "second"); |
9697a559 | 399 | unittest(rc == 1, "second expected:1 got:%i\n", rc); |
7aff0fe3 | 400 | rc = of_property_match_string(np, "phandle-list-names", "third"); |
9697a559 | 401 | unittest(rc == 2, "third expected:2 got:%i\n", rc); |
7aff0fe3 | 402 | rc = of_property_match_string(np, "phandle-list-names", "fourth"); |
9697a559 | 403 | unittest(rc == -ENODATA, "unmatched string; rc=%i\n", rc); |
7aff0fe3 | 404 | rc = of_property_match_string(np, "missing-property", "blah"); |
9697a559 | 405 | unittest(rc == -EINVAL, "missing property; rc=%i\n", rc); |
7aff0fe3 | 406 | rc = of_property_match_string(np, "empty-property", "blah"); |
9697a559 | 407 | unittest(rc == -ENODATA, "empty property; rc=%i\n", rc); |
7aff0fe3 | 408 | rc = of_property_match_string(np, "unterminated-string", "blah"); |
9697a559 | 409 | unittest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc); |
a87fa1d8 GL |
410 | |
411 | /* of_property_count_strings() tests */ | |
412 | rc = of_property_count_strings(np, "string-property"); | |
9697a559 | 413 | unittest(rc == 1, "Incorrect string count; rc=%i\n", rc); |
a87fa1d8 | 414 | rc = of_property_count_strings(np, "phandle-list-names"); |
9697a559 | 415 | unittest(rc == 3, "Incorrect string count; rc=%i\n", rc); |
a87fa1d8 | 416 | rc = of_property_count_strings(np, "unterminated-string"); |
9697a559 | 417 | unittest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc); |
a87fa1d8 | 418 | rc = of_property_count_strings(np, "unterminated-string-list"); |
9697a559 | 419 | unittest(rc == -EILSEQ, "unterminated string array; rc=%i\n", rc); |
a87fa1d8 GL |
420 | |
421 | /* of_property_read_string_index() tests */ | |
422 | rc = of_property_read_string_index(np, "string-property", 0, strings); | |
9697a559 | 423 | unittest(rc == 0 && !strcmp(strings[0], "foobar"), "of_property_read_string_index() failure; rc=%i\n", rc); |
a87fa1d8 GL |
424 | strings[0] = NULL; |
425 | rc = of_property_read_string_index(np, "string-property", 1, strings); | |
9697a559 | 426 | unittest(rc == -ENODATA && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc); |
a87fa1d8 | 427 | rc = of_property_read_string_index(np, "phandle-list-names", 0, strings); |
9697a559 | 428 | unittest(rc == 0 && !strcmp(strings[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc); |
a87fa1d8 | 429 | rc = of_property_read_string_index(np, "phandle-list-names", 1, strings); |
9697a559 | 430 | unittest(rc == 0 && !strcmp(strings[0], "second"), "of_property_read_string_index() failure; rc=%i\n", rc); |
a87fa1d8 | 431 | rc = of_property_read_string_index(np, "phandle-list-names", 2, strings); |
9697a559 | 432 | unittest(rc == 0 && !strcmp(strings[0], "third"), "of_property_read_string_index() failure; rc=%i\n", rc); |
a87fa1d8 GL |
433 | strings[0] = NULL; |
434 | rc = of_property_read_string_index(np, "phandle-list-names", 3, strings); | |
9697a559 | 435 | unittest(rc == -ENODATA && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc); |
a87fa1d8 GL |
436 | strings[0] = NULL; |
437 | rc = of_property_read_string_index(np, "unterminated-string", 0, strings); | |
9697a559 | 438 | unittest(rc == -EILSEQ && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc); |
a87fa1d8 | 439 | rc = of_property_read_string_index(np, "unterminated-string-list", 0, strings); |
9697a559 | 440 | unittest(rc == 0 && !strcmp(strings[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc); |
a87fa1d8 GL |
441 | strings[0] = NULL; |
442 | rc = of_property_read_string_index(np, "unterminated-string-list", 2, strings); /* should fail */ | |
9697a559 | 443 | unittest(rc == -EILSEQ && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc); |
a87fa1d8 GL |
444 | strings[1] = NULL; |
445 | ||
446 | /* of_property_read_string_array() tests */ | |
447 | rc = of_property_read_string_array(np, "string-property", strings, 4); | |
9697a559 | 448 | unittest(rc == 1, "Incorrect string count; rc=%i\n", rc); |
a87fa1d8 | 449 | rc = of_property_read_string_array(np, "phandle-list-names", strings, 4); |
9697a559 | 450 | unittest(rc == 3, "Incorrect string count; rc=%i\n", rc); |
a87fa1d8 | 451 | rc = of_property_read_string_array(np, "unterminated-string", strings, 4); |
9697a559 | 452 | unittest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc); |
a87fa1d8 GL |
453 | /* -- An incorrectly formed string should cause a failure */ |
454 | rc = of_property_read_string_array(np, "unterminated-string-list", strings, 4); | |
9697a559 | 455 | unittest(rc == -EILSEQ, "unterminated string array; rc=%i\n", rc); |
a87fa1d8 GL |
456 | /* -- parsing the correctly formed strings should still work: */ |
457 | strings[2] = NULL; | |
458 | rc = of_property_read_string_array(np, "unterminated-string-list", strings, 2); | |
9697a559 | 459 | unittest(rc == 2 && strings[2] == NULL, "of_property_read_string_array() failure; rc=%i\n", rc); |
a87fa1d8 GL |
460 | strings[1] = NULL; |
461 | rc = of_property_read_string_array(np, "phandle-list-names", strings, 1); | |
9697a559 | 462 | unittest(rc == 1 && strings[1] == NULL, "Overwrote end of string array; rc=%i, str='%s'\n", rc, strings[1]); |
7aff0fe3 GL |
463 | } |
464 | ||
69843396 PA |
465 | #define propcmp(p1, p2) (((p1)->length == (p2)->length) && \ |
466 | (p1)->value && (p2)->value && \ | |
467 | !memcmp((p1)->value, (p2)->value, (p1)->length) && \ | |
468 | !strcmp((p1)->name, (p2)->name)) | |
9697a559 | 469 | static void __init of_unittest_property_copy(void) |
69843396 PA |
470 | { |
471 | #ifdef CONFIG_OF_DYNAMIC | |
472 | struct property p1 = { .name = "p1", .length = 0, .value = "" }; | |
473 | struct property p2 = { .name = "p2", .length = 5, .value = "abcd" }; | |
474 | struct property *new; | |
475 | ||
476 | new = __of_prop_dup(&p1, GFP_KERNEL); | |
9697a559 | 477 | unittest(new && propcmp(&p1, new), "empty property didn't copy correctly\n"); |
69843396 PA |
478 | kfree(new->value); |
479 | kfree(new->name); | |
480 | kfree(new); | |
481 | ||
482 | new = __of_prop_dup(&p2, GFP_KERNEL); | |
9697a559 | 483 | unittest(new && propcmp(&p2, new), "non-empty property didn't copy correctly\n"); |
69843396 PA |
484 | kfree(new->value); |
485 | kfree(new->name); | |
486 | kfree(new); | |
487 | #endif | |
488 | } | |
489 | ||
9697a559 | 490 | static void __init of_unittest_changeset(void) |
201c910b PA |
491 | { |
492 | #ifdef CONFIG_OF_DYNAMIC | |
493 | struct property *ppadd, padd = { .name = "prop-add", .length = 0, .value = "" }; | |
494 | struct property *ppupdate, pupdate = { .name = "prop-update", .length = 5, .value = "abcd" }; | |
495 | struct property *ppremove; | |
e5179581 | 496 | struct device_node *n1, *n2, *n21, *nremove, *parent, *np; |
201c910b PA |
497 | struct of_changeset chgset; |
498 | ||
e5179581 | 499 | n1 = __of_node_dup(NULL, "/testcase-data/changeset/n1"); |
9697a559 | 500 | unittest(n1, "testcase setup failure\n"); |
e5179581 | 501 | n2 = __of_node_dup(NULL, "/testcase-data/changeset/n2"); |
9697a559 | 502 | unittest(n2, "testcase setup failure\n"); |
e5179581 | 503 | n21 = __of_node_dup(NULL, "%s/%s", "/testcase-data/changeset/n2", "n21"); |
9697a559 | 504 | unittest(n21, "testcase setup failure %p\n", n21); |
201c910b | 505 | nremove = of_find_node_by_path("/testcase-data/changeset/node-remove"); |
9697a559 | 506 | unittest(nremove, "testcase setup failure\n"); |
201c910b | 507 | ppadd = __of_prop_dup(&padd, GFP_KERNEL); |
9697a559 | 508 | unittest(ppadd, "testcase setup failure\n"); |
201c910b | 509 | ppupdate = __of_prop_dup(&pupdate, GFP_KERNEL); |
9697a559 | 510 | unittest(ppupdate, "testcase setup failure\n"); |
201c910b PA |
511 | parent = nremove->parent; |
512 | n1->parent = parent; | |
513 | n2->parent = parent; | |
514 | n21->parent = n2; | |
515 | n2->child = n21; | |
516 | ppremove = of_find_property(parent, "prop-remove", NULL); | |
9697a559 | 517 | unittest(ppremove, "failed to find removal prop"); |
201c910b PA |
518 | |
519 | of_changeset_init(&chgset); | |
9697a559 WL |
520 | unittest(!of_changeset_attach_node(&chgset, n1), "fail attach n1\n"); |
521 | unittest(!of_changeset_attach_node(&chgset, n2), "fail attach n2\n"); | |
522 | unittest(!of_changeset_detach_node(&chgset, nremove), "fail remove node\n"); | |
523 | unittest(!of_changeset_attach_node(&chgset, n21), "fail attach n21\n"); | |
524 | unittest(!of_changeset_add_property(&chgset, parent, ppadd), "fail add prop\n"); | |
525 | unittest(!of_changeset_update_property(&chgset, parent, ppupdate), "fail update prop\n"); | |
526 | unittest(!of_changeset_remove_property(&chgset, parent, ppremove), "fail remove prop\n"); | |
201c910b | 527 | mutex_lock(&of_mutex); |
9697a559 | 528 | unittest(!of_changeset_apply(&chgset), "apply failed\n"); |
201c910b PA |
529 | mutex_unlock(&of_mutex); |
530 | ||
e5179581 | 531 | /* Make sure node names are constructed correctly */ |
9697a559 | 532 | unittest((np = of_find_node_by_path("/testcase-data/changeset/n2/n21")), |
e5179581 | 533 | "'%s' not added\n", n21->full_name); |
c46ca3c8 | 534 | of_node_put(np); |
e5179581 | 535 | |
201c910b | 536 | mutex_lock(&of_mutex); |
9697a559 | 537 | unittest(!of_changeset_revert(&chgset), "revert failed\n"); |
201c910b PA |
538 | mutex_unlock(&of_mutex); |
539 | ||
540 | of_changeset_destroy(&chgset); | |
541 | #endif | |
542 | } | |
543 | ||
9697a559 | 544 | static void __init of_unittest_parse_interrupts(void) |
a9f10ca7 GL |
545 | { |
546 | struct device_node *np; | |
547 | struct of_phandle_args args; | |
548 | int i, rc; | |
549 | ||
550 | np = of_find_node_by_path("/testcase-data/interrupts/interrupts0"); | |
551 | if (!np) { | |
552 | pr_err("missing testcase data\n"); | |
553 | return; | |
554 | } | |
555 | ||
556 | for (i = 0; i < 4; i++) { | |
557 | bool passed = true; | |
558 | args.args_count = 0; | |
559 | rc = of_irq_parse_one(np, i, &args); | |
560 | ||
561 | passed &= !rc; | |
562 | passed &= (args.args_count == 1); | |
563 | passed &= (args.args[0] == (i + 1)); | |
564 | ||
9697a559 | 565 | unittest(passed, "index %i - data error on node %s rc=%i\n", |
a9f10ca7 GL |
566 | i, args.np->full_name, rc); |
567 | } | |
568 | of_node_put(np); | |
569 | ||
570 | np = of_find_node_by_path("/testcase-data/interrupts/interrupts1"); | |
571 | if (!np) { | |
572 | pr_err("missing testcase data\n"); | |
573 | return; | |
574 | } | |
575 | ||
576 | for (i = 0; i < 4; i++) { | |
577 | bool passed = true; | |
578 | args.args_count = 0; | |
579 | rc = of_irq_parse_one(np, i, &args); | |
580 | ||
581 | /* Test the values from tests-phandle.dtsi */ | |
582 | switch (i) { | |
583 | case 0: | |
584 | passed &= !rc; | |
585 | passed &= (args.args_count == 1); | |
586 | passed &= (args.args[0] == 9); | |
587 | break; | |
588 | case 1: | |
589 | passed &= !rc; | |
590 | passed &= (args.args_count == 3); | |
591 | passed &= (args.args[0] == 10); | |
592 | passed &= (args.args[1] == 11); | |
593 | passed &= (args.args[2] == 12); | |
594 | break; | |
595 | case 2: | |
596 | passed &= !rc; | |
597 | passed &= (args.args_count == 2); | |
598 | passed &= (args.args[0] == 13); | |
599 | passed &= (args.args[1] == 14); | |
600 | break; | |
601 | case 3: | |
602 | passed &= !rc; | |
603 | passed &= (args.args_count == 2); | |
604 | passed &= (args.args[0] == 15); | |
605 | passed &= (args.args[1] == 16); | |
606 | break; | |
607 | default: | |
608 | passed = false; | |
609 | } | |
9697a559 | 610 | unittest(passed, "index %i - data error on node %s rc=%i\n", |
a9f10ca7 GL |
611 | i, args.np->full_name, rc); |
612 | } | |
613 | of_node_put(np); | |
614 | } | |
615 | ||
9697a559 | 616 | static void __init of_unittest_parse_interrupts_extended(void) |
79d97015 GL |
617 | { |
618 | struct device_node *np; | |
619 | struct of_phandle_args args; | |
620 | int i, rc; | |
621 | ||
622 | np = of_find_node_by_path("/testcase-data/interrupts/interrupts-extended0"); | |
623 | if (!np) { | |
624 | pr_err("missing testcase data\n"); | |
625 | return; | |
626 | } | |
627 | ||
628 | for (i = 0; i < 7; i++) { | |
629 | bool passed = true; | |
630 | rc = of_irq_parse_one(np, i, &args); | |
631 | ||
632 | /* Test the values from tests-phandle.dtsi */ | |
633 | switch (i) { | |
634 | case 0: | |
635 | passed &= !rc; | |
636 | passed &= (args.args_count == 1); | |
637 | passed &= (args.args[0] == 1); | |
638 | break; | |
639 | case 1: | |
640 | passed &= !rc; | |
641 | passed &= (args.args_count == 3); | |
642 | passed &= (args.args[0] == 2); | |
643 | passed &= (args.args[1] == 3); | |
644 | passed &= (args.args[2] == 4); | |
645 | break; | |
646 | case 2: | |
647 | passed &= !rc; | |
648 | passed &= (args.args_count == 2); | |
649 | passed &= (args.args[0] == 5); | |
650 | passed &= (args.args[1] == 6); | |
651 | break; | |
652 | case 3: | |
653 | passed &= !rc; | |
654 | passed &= (args.args_count == 1); | |
655 | passed &= (args.args[0] == 9); | |
656 | break; | |
657 | case 4: | |
658 | passed &= !rc; | |
659 | passed &= (args.args_count == 3); | |
660 | passed &= (args.args[0] == 10); | |
661 | passed &= (args.args[1] == 11); | |
662 | passed &= (args.args[2] == 12); | |
663 | break; | |
664 | case 5: | |
665 | passed &= !rc; | |
666 | passed &= (args.args_count == 2); | |
667 | passed &= (args.args[0] == 13); | |
668 | passed &= (args.args[1] == 14); | |
669 | break; | |
670 | case 6: | |
671 | passed &= !rc; | |
672 | passed &= (args.args_count == 1); | |
673 | passed &= (args.args[0] == 15); | |
674 | break; | |
675 | default: | |
676 | passed = false; | |
677 | } | |
678 | ||
9697a559 | 679 | unittest(passed, "index %i - data error on node %s rc=%i\n", |
79d97015 GL |
680 | i, args.np->full_name, rc); |
681 | } | |
682 | of_node_put(np); | |
683 | } | |
684 | ||
1f42e5dd GL |
685 | static struct of_device_id match_node_table[] = { |
686 | { .data = "A", .name = "name0", }, /* Name alone is lowest priority */ | |
687 | { .data = "B", .type = "type1", }, /* followed by type alone */ | |
688 | ||
689 | { .data = "Ca", .name = "name2", .type = "type1", }, /* followed by both together */ | |
690 | { .data = "Cb", .name = "name2", }, /* Only match when type doesn't match */ | |
691 | { .data = "Cc", .name = "name2", .type = "type2", }, | |
692 | ||
693 | { .data = "E", .compatible = "compat3" }, | |
694 | { .data = "G", .compatible = "compat2", }, | |
695 | { .data = "H", .compatible = "compat2", .name = "name5", }, | |
696 | { .data = "I", .compatible = "compat2", .type = "type1", }, | |
697 | { .data = "J", .compatible = "compat2", .type = "type1", .name = "name8", }, | |
698 | { .data = "K", .compatible = "compat2", .name = "name9", }, | |
699 | {} | |
700 | }; | |
701 | ||
702 | static struct { | |
703 | const char *path; | |
704 | const char *data; | |
705 | } match_node_tests[] = { | |
706 | { .path = "/testcase-data/match-node/name0", .data = "A", }, | |
707 | { .path = "/testcase-data/match-node/name1", .data = "B", }, | |
708 | { .path = "/testcase-data/match-node/a/name2", .data = "Ca", }, | |
709 | { .path = "/testcase-data/match-node/b/name2", .data = "Cb", }, | |
710 | { .path = "/testcase-data/match-node/c/name2", .data = "Cc", }, | |
711 | { .path = "/testcase-data/match-node/name3", .data = "E", }, | |
712 | { .path = "/testcase-data/match-node/name4", .data = "G", }, | |
713 | { .path = "/testcase-data/match-node/name5", .data = "H", }, | |
714 | { .path = "/testcase-data/match-node/name6", .data = "G", }, | |
715 | { .path = "/testcase-data/match-node/name7", .data = "I", }, | |
716 | { .path = "/testcase-data/match-node/name8", .data = "J", }, | |
717 | { .path = "/testcase-data/match-node/name9", .data = "K", }, | |
718 | }; | |
719 | ||
9697a559 | 720 | static void __init of_unittest_match_node(void) |
1f42e5dd GL |
721 | { |
722 | struct device_node *np; | |
723 | const struct of_device_id *match; | |
724 | int i; | |
725 | ||
726 | for (i = 0; i < ARRAY_SIZE(match_node_tests); i++) { | |
727 | np = of_find_node_by_path(match_node_tests[i].path); | |
728 | if (!np) { | |
9697a559 | 729 | unittest(0, "missing testcase node %s\n", |
1f42e5dd GL |
730 | match_node_tests[i].path); |
731 | continue; | |
732 | } | |
733 | ||
734 | match = of_match_node(match_node_table, np); | |
735 | if (!match) { | |
9697a559 | 736 | unittest(0, "%s didn't match anything\n", |
1f42e5dd GL |
737 | match_node_tests[i].path); |
738 | continue; | |
739 | } | |
740 | ||
741 | if (strcmp(match->data, match_node_tests[i].data) != 0) { | |
9697a559 | 742 | unittest(0, "%s got wrong match. expected %s, got %s\n", |
1f42e5dd GL |
743 | match_node_tests[i].path, match_node_tests[i].data, |
744 | (const char *)match->data); | |
745 | continue; | |
746 | } | |
9697a559 | 747 | unittest(1, "passed"); |
1f42e5dd GL |
748 | } |
749 | } | |
750 | ||
851da976 GL |
751 | struct device test_bus = { |
752 | .init_name = "unittest-bus", | |
753 | }; | |
9697a559 | 754 | static void __init of_unittest_platform_populate(void) |
82c0f589 | 755 | { |
851da976 GL |
756 | int irq, rc; |
757 | struct device_node *np, *child, *grandchild; | |
82c0f589 | 758 | struct platform_device *pdev; |
fb2caa50 RH |
759 | struct of_device_id match[] = { |
760 | { .compatible = "test-device", }, | |
761 | {} | |
762 | }; | |
82c0f589 RH |
763 | |
764 | np = of_find_node_by_path("/testcase-data"); | |
765 | of_platform_populate(np, of_default_bus_match_table, NULL, NULL); | |
766 | ||
767 | /* Test that a missing irq domain returns -EPROBE_DEFER */ | |
768 | np = of_find_node_by_path("/testcase-data/testcase-device1"); | |
769 | pdev = of_find_device_by_node(np); | |
9697a559 | 770 | unittest(pdev, "device 1 creation failed\n"); |
7d1cdc89 | 771 | |
82c0f589 | 772 | irq = platform_get_irq(pdev, 0); |
9697a559 | 773 | unittest(irq == -EPROBE_DEFER, "device deferred probe failed - %d\n", irq); |
82c0f589 RH |
774 | |
775 | /* Test that a parsing failure does not return -EPROBE_DEFER */ | |
776 | np = of_find_node_by_path("/testcase-data/testcase-device2"); | |
777 | pdev = of_find_device_by_node(np); | |
9697a559 | 778 | unittest(pdev, "device 2 creation failed\n"); |
82c0f589 | 779 | irq = platform_get_irq(pdev, 0); |
9697a559 | 780 | unittest(irq < 0 && irq != -EPROBE_DEFER, "device parsing error failed - %d\n", irq); |
82c0f589 | 781 | |
9697a559 | 782 | if (unittest(np = of_find_node_by_path("/testcase-data/platform-tests"), |
851da976 GL |
783 | "No testcase data in device tree\n")); |
784 | return; | |
785 | ||
9697a559 | 786 | if (unittest(!(rc = device_register(&test_bus)), |
851da976 | 787 | "testbus registration failed; rc=%i\n", rc)); |
fb2caa50 | 788 | return; |
fb2caa50 RH |
789 | |
790 | for_each_child_of_node(np, child) { | |
851da976 | 791 | of_platform_populate(child, match, NULL, &test_bus); |
fb2caa50 | 792 | for_each_child_of_node(child, grandchild) |
9697a559 | 793 | unittest(of_find_device_by_node(grandchild), |
fb2caa50 RH |
794 | "Could not create device for node '%s'\n", |
795 | grandchild->name); | |
796 | } | |
851da976 GL |
797 | |
798 | of_platform_depopulate(&test_bus); | |
799 | for_each_child_of_node(np, child) { | |
800 | for_each_child_of_node(child, grandchild) | |
9697a559 | 801 | unittest(!of_find_device_by_node(grandchild), |
851da976 GL |
802 | "device didn't get destroyed '%s'\n", |
803 | grandchild->name); | |
804 | } | |
805 | ||
806 | device_unregister(&test_bus); | |
807 | of_node_put(np); | |
82c0f589 RH |
808 | } |
809 | ||
ae9304c9 GM |
810 | /** |
811 | * update_node_properties - adds the properties | |
812 | * of np into dup node (present in live tree) and | |
813 | * updates parent of children of np to dup. | |
814 | * | |
815 | * @np: node already present in live tree | |
816 | * @dup: node present in live tree to be updated | |
817 | */ | |
818 | static void update_node_properties(struct device_node *np, | |
819 | struct device_node *dup) | |
820 | { | |
821 | struct property *prop; | |
822 | struct device_node *child; | |
823 | ||
824 | for_each_property_of_node(np, prop) | |
825 | of_add_property(dup, prop); | |
826 | ||
827 | for_each_child_of_node(np, child) | |
828 | child->parent = dup; | |
829 | } | |
830 | ||
831 | /** | |
832 | * attach_node_and_children - attaches nodes | |
833 | * and its children to live tree | |
834 | * | |
835 | * @np: Node to attach to live tree | |
836 | */ | |
837 | static int attach_node_and_children(struct device_node *np) | |
838 | { | |
5063e25a | 839 | struct device_node *next, *dup, *child; |
3ce04b4a | 840 | unsigned long flags; |
ae9304c9 | 841 | |
5063e25a GL |
842 | dup = of_find_node_by_path(np->full_name); |
843 | if (dup) { | |
844 | update_node_properties(np, dup); | |
845 | return 0; | |
846 | } | |
ae9304c9 | 847 | |
5063e25a GL |
848 | child = np->child; |
849 | np->child = NULL; | |
3ce04b4a GM |
850 | |
851 | mutex_lock(&of_mutex); | |
852 | raw_spin_lock_irqsave(&devtree_lock, flags); | |
853 | np->sibling = np->parent->child; | |
854 | np->parent->child = np; | |
855 | of_node_clear_flag(np, OF_DETACHED); | |
856 | raw_spin_unlock_irqrestore(&devtree_lock, flags); | |
857 | ||
858 | __of_attach_node_sysfs(np); | |
859 | mutex_unlock(&of_mutex); | |
860 | ||
5063e25a GL |
861 | while (child) { |
862 | next = child->sibling; | |
863 | attach_node_and_children(child); | |
864 | child = next; | |
ae9304c9 GM |
865 | } |
866 | ||
867 | return 0; | |
868 | } | |
869 | ||
870 | /** | |
9697a559 | 871 | * unittest_data_add - Reads, copies data from |
ae9304c9 GM |
872 | * linked tree and attaches it to the live tree |
873 | */ | |
9697a559 | 874 | static int __init unittest_data_add(void) |
ae9304c9 | 875 | { |
9697a559 WL |
876 | void *unittest_data; |
877 | struct device_node *unittest_data_node, *np; | |
ae9304c9 GM |
878 | extern uint8_t __dtb_testcases_begin[]; |
879 | extern uint8_t __dtb_testcases_end[]; | |
880 | const int size = __dtb_testcases_end - __dtb_testcases_begin; | |
2eb46da2 | 881 | int rc; |
ae9304c9 | 882 | |
b951f9dc | 883 | if (!size) { |
ae9304c9 GM |
884 | pr_warn("%s: No testcase data to attach; not running tests\n", |
885 | __func__); | |
886 | return -ENODATA; | |
887 | } | |
888 | ||
889 | /* creating copy */ | |
9697a559 | 890 | unittest_data = kmemdup(__dtb_testcases_begin, size, GFP_KERNEL); |
ae9304c9 | 891 | |
9697a559 WL |
892 | if (!unittest_data) { |
893 | pr_warn("%s: Failed to allocate memory for unittest_data; " | |
ae9304c9 GM |
894 | "not running tests\n", __func__); |
895 | return -ENOMEM; | |
896 | } | |
9697a559 WL |
897 | of_fdt_unflatten_tree(unittest_data, &unittest_data_node); |
898 | if (!unittest_data_node) { | |
b951f9dc GM |
899 | pr_warn("%s: No tree to attach; not running tests\n", __func__); |
900 | return -ENODATA; | |
901 | } | |
9697a559 WL |
902 | of_node_set_flag(unittest_data_node, OF_DETACHED); |
903 | rc = of_resolve_phandles(unittest_data_node); | |
2eb46da2 GL |
904 | if (rc) { |
905 | pr_err("%s: Failed to resolve phandles (rc=%i)\n", __func__, rc); | |
906 | return -EINVAL; | |
907 | } | |
b951f9dc | 908 | |
5063e25a | 909 | if (!of_root) { |
9697a559 | 910 | of_root = unittest_data_node; |
b951f9dc GM |
911 | for_each_of_allnodes(np) |
912 | __of_attach_node_sysfs(np); | |
913 | of_aliases = of_find_node_by_path("/aliases"); | |
914 | of_chosen = of_find_node_by_path("/chosen"); | |
915 | return 0; | |
916 | } | |
ae9304c9 GM |
917 | |
918 | /* attach the sub-tree to live tree */ | |
9697a559 | 919 | np = unittest_data_node->child; |
5063e25a GL |
920 | while (np) { |
921 | struct device_node *next = np->sibling; | |
922 | np->parent = of_root; | |
923 | attach_node_and_children(np); | |
924 | np = next; | |
925 | } | |
926 | return 0; | |
ae9304c9 GM |
927 | } |
928 | ||
177d271c PA |
929 | #ifdef CONFIG_OF_OVERLAY |
930 | ||
9697a559 | 931 | static int unittest_probe(struct platform_device *pdev) |
177d271c PA |
932 | { |
933 | struct device *dev = &pdev->dev; | |
934 | struct device_node *np = dev->of_node; | |
935 | ||
936 | if (np == NULL) { | |
937 | dev_err(dev, "No OF data for device\n"); | |
938 | return -EINVAL; | |
939 | ||
940 | } | |
941 | ||
942 | dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name); | |
6b1271de PA |
943 | |
944 | of_platform_populate(np, NULL, NULL, &pdev->dev); | |
945 | ||
177d271c PA |
946 | return 0; |
947 | } | |
948 | ||
9697a559 | 949 | static int unittest_remove(struct platform_device *pdev) |
177d271c PA |
950 | { |
951 | struct device *dev = &pdev->dev; | |
952 | struct device_node *np = dev->of_node; | |
953 | ||
954 | dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name); | |
955 | return 0; | |
956 | } | |
957 | ||
9697a559 WL |
958 | static struct of_device_id unittest_match[] = { |
959 | { .compatible = "unittest", }, | |
177d271c PA |
960 | {}, |
961 | }; | |
177d271c | 962 | |
9697a559 WL |
963 | static struct platform_driver unittest_driver = { |
964 | .probe = unittest_probe, | |
965 | .remove = unittest_remove, | |
177d271c | 966 | .driver = { |
9697a559 | 967 | .name = "unittest", |
177d271c | 968 | .owner = THIS_MODULE, |
9697a559 | 969 | .of_match_table = of_match_ptr(unittest_match), |
177d271c PA |
970 | }, |
971 | }; | |
972 | ||
973 | /* get the platform device instantiated at the path */ | |
974 | static struct platform_device *of_path_to_platform_device(const char *path) | |
975 | { | |
976 | struct device_node *np; | |
977 | struct platform_device *pdev; | |
978 | ||
979 | np = of_find_node_by_path(path); | |
980 | if (np == NULL) | |
981 | return NULL; | |
982 | ||
983 | pdev = of_find_device_by_node(np); | |
984 | of_node_put(np); | |
985 | ||
986 | return pdev; | |
987 | } | |
988 | ||
989 | /* find out if a platform device exists at that path */ | |
990 | static int of_path_platform_device_exists(const char *path) | |
991 | { | |
992 | struct platform_device *pdev; | |
993 | ||
994 | pdev = of_path_to_platform_device(path); | |
995 | platform_device_put(pdev); | |
996 | return pdev != NULL; | |
997 | } | |
998 | ||
4252de39 | 999 | #if IS_BUILTIN(CONFIG_I2C) |
d5e75500 PA |
1000 | |
1001 | /* get the i2c client device instantiated at the path */ | |
1002 | static struct i2c_client *of_path_to_i2c_client(const char *path) | |
1003 | { | |
1004 | struct device_node *np; | |
1005 | struct i2c_client *client; | |
1006 | ||
1007 | np = of_find_node_by_path(path); | |
1008 | if (np == NULL) | |
1009 | return NULL; | |
1010 | ||
1011 | client = of_find_i2c_device_by_node(np); | |
1012 | of_node_put(np); | |
1013 | ||
1014 | return client; | |
1015 | } | |
1016 | ||
1017 | /* find out if a i2c client device exists at that path */ | |
1018 | static int of_path_i2c_client_exists(const char *path) | |
1019 | { | |
1020 | struct i2c_client *client; | |
1021 | ||
1022 | client = of_path_to_i2c_client(path); | |
1023 | if (client) | |
1024 | put_device(&client->dev); | |
1025 | return client != NULL; | |
1026 | } | |
1027 | #else | |
1028 | static int of_path_i2c_client_exists(const char *path) | |
1029 | { | |
1030 | return 0; | |
1031 | } | |
1032 | #endif | |
1033 | ||
1034 | enum overlay_type { | |
1035 | PDEV_OVERLAY, | |
1036 | I2C_OVERLAY | |
1037 | }; | |
1038 | ||
1039 | static int of_path_device_type_exists(const char *path, | |
1040 | enum overlay_type ovtype) | |
177d271c | 1041 | { |
d5e75500 PA |
1042 | switch (ovtype) { |
1043 | case PDEV_OVERLAY: | |
1044 | return of_path_platform_device_exists(path); | |
1045 | case I2C_OVERLAY: | |
1046 | return of_path_i2c_client_exists(path); | |
1047 | } | |
1048 | return 0; | |
1049 | } | |
1050 | ||
9697a559 | 1051 | static const char *unittest_path(int nr, enum overlay_type ovtype) |
d5e75500 PA |
1052 | { |
1053 | const char *base; | |
177d271c PA |
1054 | static char buf[256]; |
1055 | ||
d5e75500 PA |
1056 | switch (ovtype) { |
1057 | case PDEV_OVERLAY: | |
1058 | base = "/testcase-data/overlay-node/test-bus"; | |
1059 | break; | |
1060 | case I2C_OVERLAY: | |
1061 | base = "/testcase-data/overlay-node/test-bus/i2c-test-bus"; | |
1062 | break; | |
1063 | default: | |
1064 | buf[0] = '\0'; | |
1065 | return buf; | |
1066 | } | |
9697a559 | 1067 | snprintf(buf, sizeof(buf) - 1, "%s/test-unittest%d", base, nr); |
177d271c | 1068 | buf[sizeof(buf) - 1] = '\0'; |
177d271c PA |
1069 | return buf; |
1070 | } | |
1071 | ||
9697a559 | 1072 | static int of_unittest_device_exists(int unittest_nr, enum overlay_type ovtype) |
d5e75500 PA |
1073 | { |
1074 | const char *path; | |
1075 | ||
9697a559 | 1076 | path = unittest_path(unittest_nr, ovtype); |
d5e75500 PA |
1077 | |
1078 | switch (ovtype) { | |
1079 | case PDEV_OVERLAY: | |
1080 | return of_path_platform_device_exists(path); | |
1081 | case I2C_OVERLAY: | |
1082 | return of_path_i2c_client_exists(path); | |
1083 | } | |
1084 | return 0; | |
1085 | } | |
1086 | ||
177d271c PA |
1087 | static const char *overlay_path(int nr) |
1088 | { | |
1089 | static char buf[256]; | |
1090 | ||
1091 | snprintf(buf, sizeof(buf) - 1, | |
1092 | "/testcase-data/overlay%d", nr); | |
1093 | buf[sizeof(buf) - 1] = '\0'; | |
1094 | ||
1095 | return buf; | |
1096 | } | |
1097 | ||
1098 | static const char *bus_path = "/testcase-data/overlay-node/test-bus"; | |
1099 | ||
492a22ac PA |
1100 | /* it is guaranteed that overlay ids are assigned in sequence */ |
1101 | #define MAX_UNITTEST_OVERLAYS 256 | |
1102 | static unsigned long overlay_id_bits[BITS_TO_LONGS(MAX_UNITTEST_OVERLAYS)]; | |
1103 | static int overlay_first_id = -1; | |
1104 | ||
1105 | static void of_unittest_track_overlay(int id) | |
1106 | { | |
1107 | if (overlay_first_id < 0) | |
1108 | overlay_first_id = id; | |
1109 | id -= overlay_first_id; | |
1110 | ||
1111 | /* we shouldn't need that many */ | |
1112 | BUG_ON(id >= MAX_UNITTEST_OVERLAYS); | |
1113 | overlay_id_bits[BIT_WORD(id)] |= BIT_MASK(id); | |
1114 | } | |
1115 | ||
1116 | static void of_unittest_untrack_overlay(int id) | |
1117 | { | |
1118 | if (overlay_first_id < 0) | |
1119 | return; | |
1120 | id -= overlay_first_id; | |
1121 | BUG_ON(id >= MAX_UNITTEST_OVERLAYS); | |
1122 | overlay_id_bits[BIT_WORD(id)] &= ~BIT_MASK(id); | |
1123 | } | |
1124 | ||
1125 | static void of_unittest_destroy_tracked_overlays(void) | |
1126 | { | |
1127 | int id, ret, defers; | |
1128 | ||
1129 | if (overlay_first_id < 0) | |
1130 | return; | |
1131 | ||
1132 | /* try until no defers */ | |
1133 | do { | |
1134 | defers = 0; | |
1135 | /* remove in reverse order */ | |
1136 | for (id = MAX_UNITTEST_OVERLAYS - 1; id >= 0; id--) { | |
1137 | if (!(overlay_id_bits[BIT_WORD(id)] & BIT_MASK(id))) | |
1138 | continue; | |
1139 | ||
1140 | ret = of_overlay_destroy(id + overlay_first_id); | |
1141 | if (ret != 0) { | |
1142 | defers++; | |
1143 | pr_warn("%s: overlay destroy failed for #%d\n", | |
1144 | __func__, id + overlay_first_id); | |
1145 | continue; | |
1146 | } | |
1147 | ||
1148 | overlay_id_bits[BIT_WORD(id)] &= ~BIT_MASK(id); | |
1149 | } | |
1150 | } while (defers > 0); | |
1151 | } | |
1152 | ||
9697a559 | 1153 | static int of_unittest_apply_overlay(int unittest_nr, int overlay_nr, |
177d271c PA |
1154 | int *overlay_id) |
1155 | { | |
1156 | struct device_node *np = NULL; | |
1157 | int ret, id = -1; | |
1158 | ||
1159 | np = of_find_node_by_path(overlay_path(overlay_nr)); | |
1160 | if (np == NULL) { | |
9697a559 | 1161 | unittest(0, "could not find overlay node @\"%s\"\n", |
177d271c PA |
1162 | overlay_path(overlay_nr)); |
1163 | ret = -EINVAL; | |
1164 | goto out; | |
1165 | } | |
1166 | ||
1167 | ret = of_overlay_create(np); | |
1168 | if (ret < 0) { | |
9697a559 | 1169 | unittest(0, "could not create overlay from \"%s\"\n", |
177d271c PA |
1170 | overlay_path(overlay_nr)); |
1171 | goto out; | |
1172 | } | |
1173 | id = ret; | |
492a22ac | 1174 | of_unittest_track_overlay(id); |
177d271c PA |
1175 | |
1176 | ret = 0; | |
1177 | ||
1178 | out: | |
1179 | of_node_put(np); | |
1180 | ||
1181 | if (overlay_id) | |
1182 | *overlay_id = id; | |
1183 | ||
1184 | return ret; | |
1185 | } | |
1186 | ||
1187 | /* apply an overlay while checking before and after states */ | |
9697a559 | 1188 | static int of_unittest_apply_overlay_check(int overlay_nr, int unittest_nr, |
d5e75500 | 1189 | int before, int after, enum overlay_type ovtype) |
177d271c PA |
1190 | { |
1191 | int ret; | |
1192 | ||
9697a559 WL |
1193 | /* unittest device must not be in before state */ |
1194 | if (of_unittest_device_exists(unittest_nr, ovtype) != before) { | |
1195 | unittest(0, "overlay @\"%s\" with device @\"%s\" %s\n", | |
177d271c | 1196 | overlay_path(overlay_nr), |
9697a559 | 1197 | unittest_path(unittest_nr, ovtype), |
177d271c PA |
1198 | !before ? "enabled" : "disabled"); |
1199 | return -EINVAL; | |
1200 | } | |
1201 | ||
9697a559 | 1202 | ret = of_unittest_apply_overlay(overlay_nr, unittest_nr, NULL); |
177d271c | 1203 | if (ret != 0) { |
9697a559 | 1204 | /* of_unittest_apply_overlay already called unittest() */ |
177d271c PA |
1205 | return ret; |
1206 | } | |
1207 | ||
9697a559 WL |
1208 | /* unittest device must be to set to after state */ |
1209 | if (of_unittest_device_exists(unittest_nr, ovtype) != after) { | |
1210 | unittest(0, "overlay @\"%s\" failed to create @\"%s\" %s\n", | |
177d271c | 1211 | overlay_path(overlay_nr), |
9697a559 | 1212 | unittest_path(unittest_nr, ovtype), |
177d271c PA |
1213 | !after ? "enabled" : "disabled"); |
1214 | return -EINVAL; | |
1215 | } | |
1216 | ||
1217 | return 0; | |
1218 | } | |
1219 | ||
1220 | /* apply an overlay and then revert it while checking before, after states */ | |
9697a559 WL |
1221 | static int of_unittest_apply_revert_overlay_check(int overlay_nr, |
1222 | int unittest_nr, int before, int after, | |
d5e75500 | 1223 | enum overlay_type ovtype) |
177d271c PA |
1224 | { |
1225 | int ret, ov_id; | |
1226 | ||
9697a559 WL |
1227 | /* unittest device must be in before state */ |
1228 | if (of_unittest_device_exists(unittest_nr, ovtype) != before) { | |
1229 | unittest(0, "overlay @\"%s\" with device @\"%s\" %s\n", | |
177d271c | 1230 | overlay_path(overlay_nr), |
9697a559 | 1231 | unittest_path(unittest_nr, ovtype), |
177d271c PA |
1232 | !before ? "enabled" : "disabled"); |
1233 | return -EINVAL; | |
1234 | } | |
1235 | ||
1236 | /* apply the overlay */ | |
9697a559 | 1237 | ret = of_unittest_apply_overlay(overlay_nr, unittest_nr, &ov_id); |
177d271c | 1238 | if (ret != 0) { |
9697a559 | 1239 | /* of_unittest_apply_overlay already called unittest() */ |
177d271c PA |
1240 | return ret; |
1241 | } | |
1242 | ||
9697a559 WL |
1243 | /* unittest device must be in after state */ |
1244 | if (of_unittest_device_exists(unittest_nr, ovtype) != after) { | |
1245 | unittest(0, "overlay @\"%s\" failed to create @\"%s\" %s\n", | |
177d271c | 1246 | overlay_path(overlay_nr), |
9697a559 | 1247 | unittest_path(unittest_nr, ovtype), |
177d271c PA |
1248 | !after ? "enabled" : "disabled"); |
1249 | return -EINVAL; | |
1250 | } | |
1251 | ||
1252 | ret = of_overlay_destroy(ov_id); | |
1253 | if (ret != 0) { | |
9697a559 | 1254 | unittest(0, "overlay @\"%s\" failed to be destroyed @\"%s\"\n", |
177d271c | 1255 | overlay_path(overlay_nr), |
9697a559 | 1256 | unittest_path(unittest_nr, ovtype)); |
177d271c PA |
1257 | return ret; |
1258 | } | |
1259 | ||
9697a559 WL |
1260 | /* unittest device must be again in before state */ |
1261 | if (of_unittest_device_exists(unittest_nr, PDEV_OVERLAY) != before) { | |
1262 | unittest(0, "overlay @\"%s\" with device @\"%s\" %s\n", | |
177d271c | 1263 | overlay_path(overlay_nr), |
9697a559 | 1264 | unittest_path(unittest_nr, ovtype), |
177d271c PA |
1265 | !before ? "enabled" : "disabled"); |
1266 | return -EINVAL; | |
1267 | } | |
1268 | ||
1269 | return 0; | |
1270 | } | |
1271 | ||
1272 | /* test activation of device */ | |
9697a559 | 1273 | static void of_unittest_overlay_0(void) |
177d271c PA |
1274 | { |
1275 | int ret; | |
1276 | ||
1277 | /* device should enable */ | |
9697a559 | 1278 | ret = of_unittest_apply_overlay_check(0, 0, 0, 1, PDEV_OVERLAY); |
177d271c PA |
1279 | if (ret != 0) |
1280 | return; | |
1281 | ||
9697a559 | 1282 | unittest(1, "overlay test %d passed\n", 0); |
177d271c PA |
1283 | } |
1284 | ||
1285 | /* test deactivation of device */ | |
9697a559 | 1286 | static void of_unittest_overlay_1(void) |
177d271c PA |
1287 | { |
1288 | int ret; | |
1289 | ||
1290 | /* device should disable */ | |
9697a559 | 1291 | ret = of_unittest_apply_overlay_check(1, 1, 1, 0, PDEV_OVERLAY); |
177d271c PA |
1292 | if (ret != 0) |
1293 | return; | |
1294 | ||
9697a559 | 1295 | unittest(1, "overlay test %d passed\n", 1); |
177d271c PA |
1296 | } |
1297 | ||
1298 | /* test activation of device */ | |
9697a559 | 1299 | static void of_unittest_overlay_2(void) |
177d271c PA |
1300 | { |
1301 | int ret; | |
1302 | ||
1303 | /* device should enable */ | |
9697a559 | 1304 | ret = of_unittest_apply_overlay_check(2, 2, 0, 1, PDEV_OVERLAY); |
177d271c PA |
1305 | if (ret != 0) |
1306 | return; | |
1307 | ||
9697a559 | 1308 | unittest(1, "overlay test %d passed\n", 2); |
177d271c PA |
1309 | } |
1310 | ||
1311 | /* test deactivation of device */ | |
9697a559 | 1312 | static void of_unittest_overlay_3(void) |
177d271c PA |
1313 | { |
1314 | int ret; | |
1315 | ||
1316 | /* device should disable */ | |
9697a559 | 1317 | ret = of_unittest_apply_overlay_check(3, 3, 1, 0, PDEV_OVERLAY); |
177d271c PA |
1318 | if (ret != 0) |
1319 | return; | |
1320 | ||
9697a559 | 1321 | unittest(1, "overlay test %d passed\n", 3); |
177d271c PA |
1322 | } |
1323 | ||
1324 | /* test activation of a full device node */ | |
9697a559 | 1325 | static void of_unittest_overlay_4(void) |
177d271c PA |
1326 | { |
1327 | int ret; | |
1328 | ||
1329 | /* device should disable */ | |
9697a559 | 1330 | ret = of_unittest_apply_overlay_check(4, 4, 0, 1, PDEV_OVERLAY); |
177d271c PA |
1331 | if (ret != 0) |
1332 | return; | |
1333 | ||
9697a559 | 1334 | unittest(1, "overlay test %d passed\n", 4); |
177d271c PA |
1335 | } |
1336 | ||
1337 | /* test overlay apply/revert sequence */ | |
9697a559 | 1338 | static void of_unittest_overlay_5(void) |
177d271c PA |
1339 | { |
1340 | int ret; | |
1341 | ||
1342 | /* device should disable */ | |
9697a559 | 1343 | ret = of_unittest_apply_revert_overlay_check(5, 5, 0, 1, PDEV_OVERLAY); |
177d271c PA |
1344 | if (ret != 0) |
1345 | return; | |
1346 | ||
9697a559 | 1347 | unittest(1, "overlay test %d passed\n", 5); |
177d271c PA |
1348 | } |
1349 | ||
1350 | /* test overlay application in sequence */ | |
9697a559 | 1351 | static void of_unittest_overlay_6(void) |
177d271c PA |
1352 | { |
1353 | struct device_node *np; | |
1354 | int ret, i, ov_id[2]; | |
9697a559 | 1355 | int overlay_nr = 6, unittest_nr = 6; |
177d271c PA |
1356 | int before = 0, after = 1; |
1357 | ||
9697a559 | 1358 | /* unittest device must be in before state */ |
177d271c | 1359 | for (i = 0; i < 2; i++) { |
9697a559 | 1360 | if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY) |
177d271c | 1361 | != before) { |
9697a559 | 1362 | unittest(0, "overlay @\"%s\" with device @\"%s\" %s\n", |
177d271c | 1363 | overlay_path(overlay_nr + i), |
9697a559 | 1364 | unittest_path(unittest_nr + i, |
d5e75500 | 1365 | PDEV_OVERLAY), |
177d271c PA |
1366 | !before ? "enabled" : "disabled"); |
1367 | return; | |
1368 | } | |
1369 | } | |
1370 | ||
1371 | /* apply the overlays */ | |
1372 | for (i = 0; i < 2; i++) { | |
1373 | ||
1374 | np = of_find_node_by_path(overlay_path(overlay_nr + i)); | |
1375 | if (np == NULL) { | |
9697a559 | 1376 | unittest(0, "could not find overlay node @\"%s\"\n", |
177d271c PA |
1377 | overlay_path(overlay_nr + i)); |
1378 | return; | |
1379 | } | |
1380 | ||
1381 | ret = of_overlay_create(np); | |
1382 | if (ret < 0) { | |
9697a559 | 1383 | unittest(0, "could not create overlay from \"%s\"\n", |
177d271c PA |
1384 | overlay_path(overlay_nr + i)); |
1385 | return; | |
1386 | } | |
1387 | ov_id[i] = ret; | |
492a22ac | 1388 | of_unittest_track_overlay(ov_id[i]); |
177d271c PA |
1389 | } |
1390 | ||
1391 | for (i = 0; i < 2; i++) { | |
9697a559 WL |
1392 | /* unittest device must be in after state */ |
1393 | if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY) | |
177d271c | 1394 | != after) { |
9697a559 | 1395 | unittest(0, "overlay @\"%s\" failed @\"%s\" %s\n", |
177d271c | 1396 | overlay_path(overlay_nr + i), |
9697a559 | 1397 | unittest_path(unittest_nr + i, |
d5e75500 | 1398 | PDEV_OVERLAY), |
177d271c PA |
1399 | !after ? "enabled" : "disabled"); |
1400 | return; | |
1401 | } | |
1402 | } | |
1403 | ||
1404 | for (i = 1; i >= 0; i--) { | |
1405 | ret = of_overlay_destroy(ov_id[i]); | |
1406 | if (ret != 0) { | |
9697a559 | 1407 | unittest(0, "overlay @\"%s\" failed destroy @\"%s\"\n", |
177d271c | 1408 | overlay_path(overlay_nr + i), |
9697a559 | 1409 | unittest_path(unittest_nr + i, |
d5e75500 | 1410 | PDEV_OVERLAY)); |
177d271c PA |
1411 | return; |
1412 | } | |
492a22ac | 1413 | of_unittest_untrack_overlay(ov_id[i]); |
177d271c PA |
1414 | } |
1415 | ||
1416 | for (i = 0; i < 2; i++) { | |
9697a559 WL |
1417 | /* unittest device must be again in before state */ |
1418 | if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY) | |
177d271c | 1419 | != before) { |
9697a559 | 1420 | unittest(0, "overlay @\"%s\" with device @\"%s\" %s\n", |
177d271c | 1421 | overlay_path(overlay_nr + i), |
9697a559 | 1422 | unittest_path(unittest_nr + i, |
d5e75500 | 1423 | PDEV_OVERLAY), |
177d271c PA |
1424 | !before ? "enabled" : "disabled"); |
1425 | return; | |
1426 | } | |
1427 | } | |
1428 | ||
9697a559 | 1429 | unittest(1, "overlay test %d passed\n", 6); |
177d271c PA |
1430 | } |
1431 | ||
1432 | /* test overlay application in sequence */ | |
9697a559 | 1433 | static void of_unittest_overlay_8(void) |
177d271c PA |
1434 | { |
1435 | struct device_node *np; | |
1436 | int ret, i, ov_id[2]; | |
9697a559 | 1437 | int overlay_nr = 8, unittest_nr = 8; |
177d271c PA |
1438 | |
1439 | /* we don't care about device state in this test */ | |
1440 | ||
1441 | /* apply the overlays */ | |
1442 | for (i = 0; i < 2; i++) { | |
1443 | ||
1444 | np = of_find_node_by_path(overlay_path(overlay_nr + i)); | |
1445 | if (np == NULL) { | |
9697a559 | 1446 | unittest(0, "could not find overlay node @\"%s\"\n", |
177d271c PA |
1447 | overlay_path(overlay_nr + i)); |
1448 | return; | |
1449 | } | |
1450 | ||
1451 | ret = of_overlay_create(np); | |
1452 | if (ret < 0) { | |
9697a559 | 1453 | unittest(0, "could not create overlay from \"%s\"\n", |
177d271c PA |
1454 | overlay_path(overlay_nr + i)); |
1455 | return; | |
1456 | } | |
1457 | ov_id[i] = ret; | |
492a22ac | 1458 | of_unittest_track_overlay(ov_id[i]); |
177d271c PA |
1459 | } |
1460 | ||
1461 | /* now try to remove first overlay (it should fail) */ | |
1462 | ret = of_overlay_destroy(ov_id[0]); | |
1463 | if (ret == 0) { | |
9697a559 | 1464 | unittest(0, "overlay @\"%s\" was destroyed @\"%s\"\n", |
177d271c | 1465 | overlay_path(overlay_nr + 0), |
9697a559 | 1466 | unittest_path(unittest_nr, |
d5e75500 | 1467 | PDEV_OVERLAY)); |
177d271c PA |
1468 | return; |
1469 | } | |
1470 | ||
1471 | /* removing them in order should work */ | |
1472 | for (i = 1; i >= 0; i--) { | |
1473 | ret = of_overlay_destroy(ov_id[i]); | |
1474 | if (ret != 0) { | |
9697a559 | 1475 | unittest(0, "overlay @\"%s\" not destroyed @\"%s\"\n", |
177d271c | 1476 | overlay_path(overlay_nr + i), |
9697a559 | 1477 | unittest_path(unittest_nr, |
d5e75500 | 1478 | PDEV_OVERLAY)); |
177d271c PA |
1479 | return; |
1480 | } | |
492a22ac | 1481 | of_unittest_untrack_overlay(ov_id[i]); |
177d271c PA |
1482 | } |
1483 | ||
9697a559 | 1484 | unittest(1, "overlay test %d passed\n", 8); |
177d271c PA |
1485 | } |
1486 | ||
6b1271de | 1487 | /* test insertion of a bus with parent devices */ |
9697a559 | 1488 | static void of_unittest_overlay_10(void) |
6b1271de PA |
1489 | { |
1490 | int ret; | |
1491 | char *child_path; | |
1492 | ||
1493 | /* device should disable */ | |
9697a559 WL |
1494 | ret = of_unittest_apply_overlay_check(10, 10, 0, 1, PDEV_OVERLAY); |
1495 | if (unittest(ret == 0, | |
d5e75500 | 1496 | "overlay test %d failed; overlay application\n", 10)) |
6b1271de PA |
1497 | return; |
1498 | ||
9697a559 WL |
1499 | child_path = kasprintf(GFP_KERNEL, "%s/test-unittest101", |
1500 | unittest_path(10, PDEV_OVERLAY)); | |
1501 | if (unittest(child_path, "overlay test %d failed; kasprintf\n", 10)) | |
6b1271de PA |
1502 | return; |
1503 | ||
d5e75500 | 1504 | ret = of_path_device_type_exists(child_path, PDEV_OVERLAY); |
6b1271de | 1505 | kfree(child_path); |
9697a559 | 1506 | if (unittest(ret, "overlay test %d failed; no child device\n", 10)) |
6b1271de PA |
1507 | return; |
1508 | } | |
1509 | ||
1510 | /* test insertion of a bus with parent devices (and revert) */ | |
9697a559 | 1511 | static void of_unittest_overlay_11(void) |
6b1271de PA |
1512 | { |
1513 | int ret; | |
1514 | ||
1515 | /* device should disable */ | |
9697a559 | 1516 | ret = of_unittest_apply_revert_overlay_check(11, 11, 0, 1, |
d5e75500 | 1517 | PDEV_OVERLAY); |
9697a559 | 1518 | if (unittest(ret == 0, |
d5e75500 PA |
1519 | "overlay test %d failed; overlay application\n", 11)) |
1520 | return; | |
1521 | } | |
1522 | ||
4252de39 | 1523 | #if IS_BUILTIN(CONFIG_I2C) && IS_ENABLED(CONFIG_OF_OVERLAY) |
d5e75500 | 1524 | |
9697a559 | 1525 | struct unittest_i2c_bus_data { |
d5e75500 PA |
1526 | struct platform_device *pdev; |
1527 | struct i2c_adapter adap; | |
1528 | }; | |
1529 | ||
9697a559 | 1530 | static int unittest_i2c_master_xfer(struct i2c_adapter *adap, |
d5e75500 PA |
1531 | struct i2c_msg *msgs, int num) |
1532 | { | |
9697a559 | 1533 | struct unittest_i2c_bus_data *std = i2c_get_adapdata(adap); |
d5e75500 PA |
1534 | |
1535 | (void)std; | |
1536 | ||
1537 | return num; | |
1538 | } | |
1539 | ||
9697a559 | 1540 | static u32 unittest_i2c_functionality(struct i2c_adapter *adap) |
d5e75500 PA |
1541 | { |
1542 | return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL; | |
1543 | } | |
1544 | ||
9697a559 WL |
1545 | static const struct i2c_algorithm unittest_i2c_algo = { |
1546 | .master_xfer = unittest_i2c_master_xfer, | |
1547 | .functionality = unittest_i2c_functionality, | |
d5e75500 PA |
1548 | }; |
1549 | ||
9697a559 | 1550 | static int unittest_i2c_bus_probe(struct platform_device *pdev) |
d5e75500 PA |
1551 | { |
1552 | struct device *dev = &pdev->dev; | |
1553 | struct device_node *np = dev->of_node; | |
9697a559 | 1554 | struct unittest_i2c_bus_data *std; |
d5e75500 PA |
1555 | struct i2c_adapter *adap; |
1556 | int ret; | |
1557 | ||
1558 | if (np == NULL) { | |
1559 | dev_err(dev, "No OF data for device\n"); | |
1560 | return -EINVAL; | |
1561 | ||
1562 | } | |
1563 | ||
1564 | dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name); | |
1565 | ||
1566 | std = devm_kzalloc(dev, sizeof(*std), GFP_KERNEL); | |
1567 | if (!std) { | |
9697a559 | 1568 | dev_err(dev, "Failed to allocate unittest i2c data\n"); |
d5e75500 PA |
1569 | return -ENOMEM; |
1570 | } | |
1571 | ||
1572 | /* link them together */ | |
1573 | std->pdev = pdev; | |
1574 | platform_set_drvdata(pdev, std); | |
1575 | ||
1576 | adap = &std->adap; | |
1577 | i2c_set_adapdata(adap, std); | |
1578 | adap->nr = -1; | |
1579 | strlcpy(adap->name, pdev->name, sizeof(adap->name)); | |
1580 | adap->class = I2C_CLASS_DEPRECATED; | |
9697a559 | 1581 | adap->algo = &unittest_i2c_algo; |
d5e75500 PA |
1582 | adap->dev.parent = dev; |
1583 | adap->dev.of_node = dev->of_node; | |
1584 | adap->timeout = 5 * HZ; | |
1585 | adap->retries = 3; | |
1586 | ||
1587 | ret = i2c_add_numbered_adapter(adap); | |
1588 | if (ret != 0) { | |
1589 | dev_err(dev, "Failed to add I2C adapter\n"); | |
1590 | return ret; | |
1591 | } | |
1592 | ||
1593 | return 0; | |
1594 | } | |
1595 | ||
9697a559 | 1596 | static int unittest_i2c_bus_remove(struct platform_device *pdev) |
d5e75500 PA |
1597 | { |
1598 | struct device *dev = &pdev->dev; | |
1599 | struct device_node *np = dev->of_node; | |
9697a559 | 1600 | struct unittest_i2c_bus_data *std = platform_get_drvdata(pdev); |
d5e75500 PA |
1601 | |
1602 | dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name); | |
1603 | i2c_del_adapter(&std->adap); | |
1604 | ||
1605 | return 0; | |
1606 | } | |
1607 | ||
9697a559 WL |
1608 | static struct of_device_id unittest_i2c_bus_match[] = { |
1609 | { .compatible = "unittest-i2c-bus", }, | |
d5e75500 PA |
1610 | {}, |
1611 | }; | |
1612 | ||
9697a559 WL |
1613 | static struct platform_driver unittest_i2c_bus_driver = { |
1614 | .probe = unittest_i2c_bus_probe, | |
1615 | .remove = unittest_i2c_bus_remove, | |
d5e75500 | 1616 | .driver = { |
9697a559 WL |
1617 | .name = "unittest-i2c-bus", |
1618 | .of_match_table = of_match_ptr(unittest_i2c_bus_match), | |
d5e75500 PA |
1619 | }, |
1620 | }; | |
1621 | ||
9697a559 | 1622 | static int unittest_i2c_dev_probe(struct i2c_client *client, |
d5e75500 PA |
1623 | const struct i2c_device_id *id) |
1624 | { | |
1625 | struct device *dev = &client->dev; | |
1626 | struct device_node *np = client->dev.of_node; | |
1627 | ||
1628 | if (!np) { | |
1629 | dev_err(dev, "No OF node\n"); | |
1630 | return -EINVAL; | |
1631 | } | |
1632 | ||
1633 | dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name); | |
1634 | ||
1635 | return 0; | |
1636 | }; | |
1637 | ||
9697a559 | 1638 | static int unittest_i2c_dev_remove(struct i2c_client *client) |
d5e75500 PA |
1639 | { |
1640 | struct device *dev = &client->dev; | |
1641 | struct device_node *np = client->dev.of_node; | |
1642 | ||
1643 | dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name); | |
1644 | return 0; | |
1645 | } | |
1646 | ||
9697a559 WL |
1647 | static const struct i2c_device_id unittest_i2c_dev_id[] = { |
1648 | { .name = "unittest-i2c-dev" }, | |
d5e75500 PA |
1649 | { } |
1650 | }; | |
1651 | ||
9697a559 | 1652 | static struct i2c_driver unittest_i2c_dev_driver = { |
d5e75500 | 1653 | .driver = { |
9697a559 | 1654 | .name = "unittest-i2c-dev", |
d5e75500 PA |
1655 | .owner = THIS_MODULE, |
1656 | }, | |
9697a559 WL |
1657 | .probe = unittest_i2c_dev_probe, |
1658 | .remove = unittest_i2c_dev_remove, | |
1659 | .id_table = unittest_i2c_dev_id, | |
d5e75500 PA |
1660 | }; |
1661 | ||
4252de39 | 1662 | #if IS_BUILTIN(CONFIG_I2C_MUX) |
d5e75500 | 1663 | |
9697a559 | 1664 | struct unittest_i2c_mux_data { |
d5e75500 PA |
1665 | int nchans; |
1666 | struct i2c_adapter *adap[]; | |
1667 | }; | |
1668 | ||
9697a559 | 1669 | static int unittest_i2c_mux_select_chan(struct i2c_adapter *adap, |
d5e75500 PA |
1670 | void *client, u32 chan) |
1671 | { | |
1672 | return 0; | |
1673 | } | |
1674 | ||
9697a559 | 1675 | static int unittest_i2c_mux_probe(struct i2c_client *client, |
d5e75500 PA |
1676 | const struct i2c_device_id *id) |
1677 | { | |
1678 | int ret, i, nchans, size; | |
1679 | struct device *dev = &client->dev; | |
1680 | struct i2c_adapter *adap = to_i2c_adapter(dev->parent); | |
1681 | struct device_node *np = client->dev.of_node, *child; | |
9697a559 | 1682 | struct unittest_i2c_mux_data *stm; |
d5e75500 PA |
1683 | u32 reg, max_reg; |
1684 | ||
1685 | dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name); | |
1686 | ||
1687 | if (!np) { | |
1688 | dev_err(dev, "No OF node\n"); | |
1689 | return -EINVAL; | |
1690 | } | |
1691 | ||
1692 | max_reg = (u32)-1; | |
1693 | for_each_child_of_node(np, child) { | |
1694 | ret = of_property_read_u32(child, "reg", ®); | |
1695 | if (ret) | |
1696 | continue; | |
1697 | if (max_reg == (u32)-1 || reg > max_reg) | |
1698 | max_reg = reg; | |
1699 | } | |
1700 | nchans = max_reg == (u32)-1 ? 0 : max_reg + 1; | |
1701 | if (nchans == 0) { | |
1702 | dev_err(dev, "No channels\n"); | |
1703 | return -EINVAL; | |
1704 | } | |
1705 | ||
9697a559 | 1706 | size = offsetof(struct unittest_i2c_mux_data, adap[nchans]); |
d5e75500 PA |
1707 | stm = devm_kzalloc(dev, size, GFP_KERNEL); |
1708 | if (!stm) { | |
1709 | dev_err(dev, "Out of memory\n"); | |
1710 | return -ENOMEM; | |
1711 | } | |
1712 | stm->nchans = nchans; | |
1713 | for (i = 0; i < nchans; i++) { | |
1714 | stm->adap[i] = i2c_add_mux_adapter(adap, dev, client, | |
9697a559 | 1715 | 0, i, 0, unittest_i2c_mux_select_chan, NULL); |
d5e75500 PA |
1716 | if (!stm->adap[i]) { |
1717 | dev_err(dev, "Failed to register mux #%d\n", i); | |
1718 | for (i--; i >= 0; i--) | |
1719 | i2c_del_mux_adapter(stm->adap[i]); | |
1720 | return -ENODEV; | |
1721 | } | |
1722 | } | |
1723 | ||
1724 | i2c_set_clientdata(client, stm); | |
1725 | ||
1726 | return 0; | |
1727 | }; | |
1728 | ||
9697a559 | 1729 | static int unittest_i2c_mux_remove(struct i2c_client *client) |
d5e75500 PA |
1730 | { |
1731 | struct device *dev = &client->dev; | |
1732 | struct device_node *np = client->dev.of_node; | |
9697a559 | 1733 | struct unittest_i2c_mux_data *stm = i2c_get_clientdata(client); |
d5e75500 PA |
1734 | int i; |
1735 | ||
1736 | dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name); | |
1737 | for (i = stm->nchans - 1; i >= 0; i--) | |
1738 | i2c_del_mux_adapter(stm->adap[i]); | |
1739 | return 0; | |
1740 | } | |
1741 | ||
9697a559 WL |
1742 | static const struct i2c_device_id unittest_i2c_mux_id[] = { |
1743 | { .name = "unittest-i2c-mux" }, | |
d5e75500 PA |
1744 | { } |
1745 | }; | |
1746 | ||
9697a559 | 1747 | static struct i2c_driver unittest_i2c_mux_driver = { |
d5e75500 | 1748 | .driver = { |
9697a559 | 1749 | .name = "unittest-i2c-mux", |
d5e75500 PA |
1750 | .owner = THIS_MODULE, |
1751 | }, | |
9697a559 WL |
1752 | .probe = unittest_i2c_mux_probe, |
1753 | .remove = unittest_i2c_mux_remove, | |
1754 | .id_table = unittest_i2c_mux_id, | |
d5e75500 PA |
1755 | }; |
1756 | ||
1757 | #endif | |
1758 | ||
9697a559 | 1759 | static int of_unittest_overlay_i2c_init(void) |
d5e75500 PA |
1760 | { |
1761 | int ret; | |
1762 | ||
9697a559 WL |
1763 | ret = i2c_add_driver(&unittest_i2c_dev_driver); |
1764 | if (unittest(ret == 0, | |
1765 | "could not register unittest i2c device driver\n")) | |
d5e75500 PA |
1766 | return ret; |
1767 | ||
9697a559 WL |
1768 | ret = platform_driver_register(&unittest_i2c_bus_driver); |
1769 | if (unittest(ret == 0, | |
1770 | "could not register unittest i2c bus driver\n")) | |
d5e75500 PA |
1771 | return ret; |
1772 | ||
4252de39 | 1773 | #if IS_BUILTIN(CONFIG_I2C_MUX) |
9697a559 WL |
1774 | ret = i2c_add_driver(&unittest_i2c_mux_driver); |
1775 | if (unittest(ret == 0, | |
1776 | "could not register unittest i2c mux driver\n")) | |
d5e75500 PA |
1777 | return ret; |
1778 | #endif | |
1779 | ||
1780 | return 0; | |
1781 | } | |
1782 | ||
9697a559 | 1783 | static void of_unittest_overlay_i2c_cleanup(void) |
d5e75500 | 1784 | { |
4252de39 | 1785 | #if IS_BUILTIN(CONFIG_I2C_MUX) |
9697a559 | 1786 | i2c_del_driver(&unittest_i2c_mux_driver); |
d5e75500 | 1787 | #endif |
9697a559 WL |
1788 | platform_driver_unregister(&unittest_i2c_bus_driver); |
1789 | i2c_del_driver(&unittest_i2c_dev_driver); | |
d5e75500 PA |
1790 | } |
1791 | ||
9697a559 | 1792 | static void of_unittest_overlay_i2c_12(void) |
d5e75500 PA |
1793 | { |
1794 | int ret; | |
1795 | ||
1796 | /* device should enable */ | |
9697a559 | 1797 | ret = of_unittest_apply_overlay_check(12, 12, 0, 1, I2C_OVERLAY); |
d5e75500 PA |
1798 | if (ret != 0) |
1799 | return; | |
1800 | ||
9697a559 | 1801 | unittest(1, "overlay test %d passed\n", 12); |
d5e75500 PA |
1802 | } |
1803 | ||
1804 | /* test deactivation of device */ | |
9697a559 | 1805 | static void of_unittest_overlay_i2c_13(void) |
d5e75500 PA |
1806 | { |
1807 | int ret; | |
1808 | ||
1809 | /* device should disable */ | |
9697a559 | 1810 | ret = of_unittest_apply_overlay_check(13, 13, 1, 0, I2C_OVERLAY); |
d5e75500 | 1811 | if (ret != 0) |
6b1271de | 1812 | return; |
d5e75500 | 1813 | |
9697a559 | 1814 | unittest(1, "overlay test %d passed\n", 13); |
d5e75500 PA |
1815 | } |
1816 | ||
1817 | /* just check for i2c mux existence */ | |
9697a559 | 1818 | static void of_unittest_overlay_i2c_14(void) |
d5e75500 | 1819 | { |
6b1271de PA |
1820 | } |
1821 | ||
9697a559 | 1822 | static void of_unittest_overlay_i2c_15(void) |
d5e75500 PA |
1823 | { |
1824 | int ret; | |
1825 | ||
1826 | /* device should enable */ | |
9697a559 | 1827 | ret = of_unittest_apply_overlay_check(16, 15, 0, 1, I2C_OVERLAY); |
d5e75500 PA |
1828 | if (ret != 0) |
1829 | return; | |
1830 | ||
9697a559 | 1831 | unittest(1, "overlay test %d passed\n", 15); |
d5e75500 PA |
1832 | } |
1833 | ||
1834 | #else | |
1835 | ||
9697a559 WL |
1836 | static inline void of_unittest_overlay_i2c_14(void) { } |
1837 | static inline void of_unittest_overlay_i2c_15(void) { } | |
d5e75500 PA |
1838 | |
1839 | #endif | |
1840 | ||
9697a559 | 1841 | static void __init of_unittest_overlay(void) |
177d271c PA |
1842 | { |
1843 | struct device_node *bus_np = NULL; | |
1844 | int ret; | |
1845 | ||
9697a559 | 1846 | ret = platform_driver_register(&unittest_driver); |
177d271c | 1847 | if (ret != 0) { |
9697a559 | 1848 | unittest(0, "could not register unittest driver\n"); |
177d271c PA |
1849 | goto out; |
1850 | } | |
1851 | ||
1852 | bus_np = of_find_node_by_path(bus_path); | |
1853 | if (bus_np == NULL) { | |
9697a559 | 1854 | unittest(0, "could not find bus_path \"%s\"\n", bus_path); |
177d271c PA |
1855 | goto out; |
1856 | } | |
1857 | ||
1858 | ret = of_platform_populate(bus_np, of_default_bus_match_table, | |
1859 | NULL, NULL); | |
1860 | if (ret != 0) { | |
9697a559 | 1861 | unittest(0, "could not populate bus @ \"%s\"\n", bus_path); |
177d271c PA |
1862 | goto out; |
1863 | } | |
1864 | ||
9697a559 WL |
1865 | if (!of_unittest_device_exists(100, PDEV_OVERLAY)) { |
1866 | unittest(0, "could not find unittest0 @ \"%s\"\n", | |
1867 | unittest_path(100, PDEV_OVERLAY)); | |
177d271c PA |
1868 | goto out; |
1869 | } | |
1870 | ||
9697a559 WL |
1871 | if (of_unittest_device_exists(101, PDEV_OVERLAY)) { |
1872 | unittest(0, "unittest1 @ \"%s\" should not exist\n", | |
1873 | unittest_path(101, PDEV_OVERLAY)); | |
177d271c PA |
1874 | goto out; |
1875 | } | |
1876 | ||
9697a559 | 1877 | unittest(1, "basic infrastructure of overlays passed"); |
177d271c PA |
1878 | |
1879 | /* tests in sequence */ | |
9697a559 WL |
1880 | of_unittest_overlay_0(); |
1881 | of_unittest_overlay_1(); | |
1882 | of_unittest_overlay_2(); | |
1883 | of_unittest_overlay_3(); | |
1884 | of_unittest_overlay_4(); | |
1885 | of_unittest_overlay_5(); | |
1886 | of_unittest_overlay_6(); | |
1887 | of_unittest_overlay_8(); | |
1888 | ||
1889 | of_unittest_overlay_10(); | |
1890 | of_unittest_overlay_11(); | |
6b1271de | 1891 | |
4252de39 | 1892 | #if IS_BUILTIN(CONFIG_I2C) |
9697a559 | 1893 | if (unittest(of_unittest_overlay_i2c_init() == 0, "i2c init failed\n")) |
d5e75500 PA |
1894 | goto out; |
1895 | ||
9697a559 WL |
1896 | of_unittest_overlay_i2c_12(); |
1897 | of_unittest_overlay_i2c_13(); | |
1898 | of_unittest_overlay_i2c_14(); | |
1899 | of_unittest_overlay_i2c_15(); | |
d5e75500 | 1900 | |
9697a559 | 1901 | of_unittest_overlay_i2c_cleanup(); |
d5e75500 PA |
1902 | #endif |
1903 | ||
492a22ac PA |
1904 | of_unittest_destroy_tracked_overlays(); |
1905 | ||
177d271c PA |
1906 | out: |
1907 | of_node_put(bus_np); | |
1908 | } | |
1909 | ||
1910 | #else | |
9697a559 | 1911 | static inline void __init of_unittest_overlay(void) { } |
177d271c PA |
1912 | #endif |
1913 | ||
9697a559 | 1914 | static int __init of_unittest(void) |
53a42093 GL |
1915 | { |
1916 | struct device_node *np; | |
ae9304c9 GM |
1917 | int res; |
1918 | ||
9697a559 WL |
1919 | /* adding data for unittest */ |
1920 | res = unittest_data_add(); | |
ae9304c9 GM |
1921 | if (res) |
1922 | return res; | |
788ec2fc GL |
1923 | if (!of_aliases) |
1924 | of_aliases = of_find_node_by_path("/aliases"); | |
53a42093 GL |
1925 | |
1926 | np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); | |
1927 | if (!np) { | |
1928 | pr_info("No testcase data in device tree; not running tests\n"); | |
1929 | return 0; | |
1930 | } | |
1931 | of_node_put(np); | |
1932 | ||
9697a559 WL |
1933 | pr_info("start of unittest - you will see error messages\n"); |
1934 | of_unittest_check_tree_linkage(); | |
1935 | of_unittest_check_phandles(); | |
1936 | of_unittest_find_node_by_name(); | |
1937 | of_unittest_dynamic(); | |
1938 | of_unittest_parse_phandle_with_args(); | |
1939 | of_unittest_property_string(); | |
1940 | of_unittest_property_copy(); | |
1941 | of_unittest_changeset(); | |
1942 | of_unittest_parse_interrupts(); | |
1943 | of_unittest_parse_interrupts_extended(); | |
1944 | of_unittest_match_node(); | |
1945 | of_unittest_platform_populate(); | |
1946 | of_unittest_overlay(); | |
ae9304c9 | 1947 | |
f2051d6a | 1948 | /* Double check linkage after removing testcase data */ |
9697a559 | 1949 | of_unittest_check_tree_linkage(); |
f2051d6a | 1950 | |
9697a559 WL |
1951 | pr_info("end of unittest - %i passed, %i failed\n", |
1952 | unittest_results.passed, unittest_results.failed); | |
f2051d6a | 1953 | |
53a42093 GL |
1954 | return 0; |
1955 | } | |
9697a559 | 1956 | late_initcall(of_unittest); |