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 | ||
69843396 PA |
26 | #include "of_private.h" |
27 | ||
9697a559 | 28 | static struct unittest_results { |
a9f10ca7 GL |
29 | int passed; |
30 | int failed; | |
9697a559 | 31 | } unittest_results; |
a9f10ca7 | 32 | |
9697a559 | 33 | #define unittest(result, fmt, ...) ({ \ |
851da976 GL |
34 | bool failed = !(result); \ |
35 | if (failed) { \ | |
9697a559 | 36 | unittest_results.failed++; \ |
a9f10ca7 | 37 | pr_err("FAIL %s():%i " fmt, __func__, __LINE__, ##__VA_ARGS__); \ |
cabb7d5b | 38 | } else { \ |
9697a559 | 39 | unittest_results.passed++; \ |
a9f10ca7 | 40 | pr_debug("pass %s():%i\n", __func__, __LINE__); \ |
cabb7d5b | 41 | } \ |
851da976 GL |
42 | failed; \ |
43 | }) | |
53a42093 | 44 | |
9697a559 | 45 | static void __init of_unittest_find_node_by_name(void) |
ae91ff72 GL |
46 | { |
47 | struct device_node *np; | |
75c28c09 | 48 | const char *options; |
ae91ff72 GL |
49 | |
50 | np = of_find_node_by_path("/testcase-data"); | |
9697a559 | 51 | unittest(np && !strcmp("/testcase-data", np->full_name), |
ae91ff72 GL |
52 | "find /testcase-data failed\n"); |
53 | of_node_put(np); | |
54 | ||
55 | /* Test if trailing '/' works */ | |
56 | np = of_find_node_by_path("/testcase-data/"); | |
9697a559 | 57 | unittest(!np, "trailing '/' on /testcase-data/ should fail\n"); |
ae91ff72 GL |
58 | |
59 | np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); | |
9697a559 | 60 | unittest(np && !strcmp("/testcase-data/phandle-tests/consumer-a", np->full_name), |
ae91ff72 GL |
61 | "find /testcase-data/phandle-tests/consumer-a failed\n"); |
62 | of_node_put(np); | |
63 | ||
64 | np = of_find_node_by_path("testcase-alias"); | |
9697a559 | 65 | unittest(np && !strcmp("/testcase-data", np->full_name), |
ae91ff72 GL |
66 | "find testcase-alias failed\n"); |
67 | of_node_put(np); | |
68 | ||
69 | /* Test if trailing '/' works on aliases */ | |
70 | np = of_find_node_by_path("testcase-alias/"); | |
9697a559 | 71 | unittest(!np, "trailing '/' on testcase-alias/ should fail\n"); |
ae91ff72 GL |
72 | |
73 | np = of_find_node_by_path("testcase-alias/phandle-tests/consumer-a"); | |
9697a559 | 74 | unittest(np && !strcmp("/testcase-data/phandle-tests/consumer-a", np->full_name), |
ae91ff72 GL |
75 | "find testcase-alias/phandle-tests/consumer-a failed\n"); |
76 | of_node_put(np); | |
77 | ||
78 | np = of_find_node_by_path("/testcase-data/missing-path"); | |
9697a559 | 79 | unittest(!np, "non-existent path returned node %s\n", np->full_name); |
ae91ff72 GL |
80 | of_node_put(np); |
81 | ||
82 | np = of_find_node_by_path("missing-alias"); | |
9697a559 | 83 | unittest(!np, "non-existent alias returned node %s\n", np->full_name); |
ae91ff72 GL |
84 | of_node_put(np); |
85 | ||
86 | np = of_find_node_by_path("testcase-alias/missing-path"); | |
9697a559 | 87 | unittest(!np, "non-existent alias with relative path returned node %s\n", np->full_name); |
ae91ff72 | 88 | of_node_put(np); |
75c28c09 LL |
89 | |
90 | np = of_find_node_opts_by_path("/testcase-data:testoption", &options); | |
9697a559 | 91 | unittest(np && !strcmp("testoption", options), |
75c28c09 LL |
92 | "option path test failed\n"); |
93 | of_node_put(np); | |
94 | ||
8cbba1ab | 95 | np = of_find_node_opts_by_path("/testcase-data:test/option", &options); |
9697a559 | 96 | unittest(np && !strcmp("test/option", options), |
8cbba1ab PH |
97 | "option path test, subcase #1 failed\n"); |
98 | of_node_put(np); | |
99 | ||
5ca1b0dd | 100 | np = of_find_node_opts_by_path("/testcase-data/testcase-device1:test/option", &options); |
9697a559 | 101 | unittest(np && !strcmp("test/option", options), |
5ca1b0dd BN |
102 | "option path test, subcase #2 failed\n"); |
103 | of_node_put(np); | |
104 | ||
75c28c09 | 105 | np = of_find_node_opts_by_path("/testcase-data:testoption", NULL); |
9697a559 | 106 | unittest(np, "NULL option path test failed\n"); |
75c28c09 LL |
107 | of_node_put(np); |
108 | ||
109 | np = of_find_node_opts_by_path("testcase-alias:testaliasoption", | |
110 | &options); | |
9697a559 | 111 | unittest(np && !strcmp("testaliasoption", options), |
75c28c09 LL |
112 | "option alias path test failed\n"); |
113 | of_node_put(np); | |
114 | ||
8cbba1ab PH |
115 | np = of_find_node_opts_by_path("testcase-alias:test/alias/option", |
116 | &options); | |
9697a559 | 117 | unittest(np && !strcmp("test/alias/option", options), |
8cbba1ab PH |
118 | "option alias path test, subcase #1 failed\n"); |
119 | of_node_put(np); | |
120 | ||
75c28c09 | 121 | np = of_find_node_opts_by_path("testcase-alias:testaliasoption", NULL); |
9697a559 | 122 | unittest(np, "NULL option alias path test failed\n"); |
75c28c09 LL |
123 | of_node_put(np); |
124 | ||
125 | options = "testoption"; | |
126 | np = of_find_node_opts_by_path("testcase-alias", &options); | |
9697a559 | 127 | unittest(np && !options, "option clearing test failed\n"); |
75c28c09 LL |
128 | of_node_put(np); |
129 | ||
130 | options = "testoption"; | |
131 | np = of_find_node_opts_by_path("/", &options); | |
9697a559 | 132 | unittest(np && !options, "option clearing root node test failed\n"); |
75c28c09 | 133 | of_node_put(np); |
ae91ff72 GL |
134 | } |
135 | ||
9697a559 | 136 | static void __init of_unittest_dynamic(void) |
7e66c5c7 GL |
137 | { |
138 | struct device_node *np; | |
139 | struct property *prop; | |
140 | ||
141 | np = of_find_node_by_path("/testcase-data"); | |
142 | if (!np) { | |
143 | pr_err("missing testcase data\n"); | |
144 | return; | |
145 | } | |
146 | ||
147 | /* Array of 4 properties for the purpose of testing */ | |
148 | prop = kzalloc(sizeof(*prop) * 4, GFP_KERNEL); | |
149 | if (!prop) { | |
9697a559 | 150 | unittest(0, "kzalloc() failed\n"); |
7e66c5c7 GL |
151 | return; |
152 | } | |
153 | ||
154 | /* Add a new property - should pass*/ | |
155 | prop->name = "new-property"; | |
156 | prop->value = "new-property-data"; | |
157 | prop->length = strlen(prop->value); | |
9697a559 | 158 | unittest(of_add_property(np, prop) == 0, "Adding a new property failed\n"); |
7e66c5c7 GL |
159 | |
160 | /* Try to add an existing property - should fail */ | |
161 | prop++; | |
162 | prop->name = "new-property"; | |
163 | prop->value = "new-property-data-should-fail"; | |
164 | prop->length = strlen(prop->value); | |
9697a559 | 165 | unittest(of_add_property(np, prop) != 0, |
7e66c5c7 GL |
166 | "Adding an existing property should have failed\n"); |
167 | ||
168 | /* Try to modify an existing property - should pass */ | |
169 | prop->value = "modify-property-data-should-pass"; | |
170 | prop->length = strlen(prop->value); | |
9697a559 | 171 | unittest(of_update_property(np, prop) == 0, |
7e66c5c7 GL |
172 | "Updating an existing property should have passed\n"); |
173 | ||
174 | /* Try to modify non-existent property - should pass*/ | |
175 | prop++; | |
176 | prop->name = "modify-property"; | |
177 | prop->value = "modify-missing-property-data-should-pass"; | |
178 | prop->length = strlen(prop->value); | |
9697a559 | 179 | unittest(of_update_property(np, prop) == 0, |
7e66c5c7 GL |
180 | "Updating a missing property should have passed\n"); |
181 | ||
182 | /* Remove property - should pass */ | |
9697a559 | 183 | unittest(of_remove_property(np, prop) == 0, |
7e66c5c7 GL |
184 | "Removing a property should have passed\n"); |
185 | ||
186 | /* Adding very large property - should pass */ | |
187 | prop++; | |
188 | prop->name = "large-property-PAGE_SIZEx8"; | |
189 | prop->length = PAGE_SIZE * 8; | |
190 | prop->value = kzalloc(prop->length, GFP_KERNEL); | |
9697a559 | 191 | unittest(prop->value != NULL, "Unable to allocate large buffer\n"); |
7e66c5c7 | 192 | if (prop->value) |
9697a559 | 193 | unittest(of_add_property(np, prop) == 0, |
7e66c5c7 GL |
194 | "Adding a large property should have passed\n"); |
195 | } | |
196 | ||
9697a559 | 197 | static int __init of_unittest_check_node_linkage(struct device_node *np) |
f2051d6a | 198 | { |
5063e25a | 199 | struct device_node *child; |
f2051d6a GL |
200 | int count = 0, rc; |
201 | ||
202 | for_each_child_of_node(np, child) { | |
203 | if (child->parent != np) { | |
204 | pr_err("Child node %s links to wrong parent %s\n", | |
205 | child->name, np->name); | |
206 | return -EINVAL; | |
207 | } | |
208 | ||
9697a559 | 209 | rc = of_unittest_check_node_linkage(child); |
f2051d6a GL |
210 | if (rc < 0) |
211 | return rc; | |
212 | count += rc; | |
213 | } | |
214 | ||
215 | return count + 1; | |
216 | } | |
217 | ||
9697a559 | 218 | static void __init of_unittest_check_tree_linkage(void) |
f2051d6a GL |
219 | { |
220 | struct device_node *np; | |
221 | int allnode_count = 0, child_count; | |
222 | ||
5063e25a | 223 | if (!of_root) |
f2051d6a GL |
224 | return; |
225 | ||
226 | for_each_of_allnodes(np) | |
227 | allnode_count++; | |
9697a559 | 228 | child_count = of_unittest_check_node_linkage(of_root); |
f2051d6a | 229 | |
9697a559 | 230 | unittest(child_count > 0, "Device node data structure is corrupted\n"); |
a2166ca5 | 231 | unittest(child_count == allnode_count, |
a6bb121e FR |
232 | "allnodes list size (%i) doesn't match sibling lists size (%i)\n", |
233 | allnode_count, child_count); | |
f2051d6a GL |
234 | pr_debug("allnodes list size (%i); sibling lists size (%i)\n", allnode_count, child_count); |
235 | } | |
236 | ||
841ec213 GL |
237 | struct node_hash { |
238 | struct hlist_node node; | |
239 | struct device_node *np; | |
240 | }; | |
241 | ||
2118f4b8 | 242 | static DEFINE_HASHTABLE(phandle_ht, 8); |
9697a559 | 243 | static void __init of_unittest_check_phandles(void) |
841ec213 GL |
244 | { |
245 | struct device_node *np; | |
246 | struct node_hash *nh; | |
247 | struct hlist_node *tmp; | |
248 | int i, dup_count = 0, phandle_count = 0; | |
841ec213 | 249 | |
841ec213 GL |
250 | for_each_of_allnodes(np) { |
251 | if (!np->phandle) | |
252 | continue; | |
253 | ||
2118f4b8 | 254 | hash_for_each_possible(phandle_ht, nh, node, np->phandle) { |
841ec213 GL |
255 | if (nh->np->phandle == np->phandle) { |
256 | pr_info("Duplicate phandle! %i used by %s and %s\n", | |
257 | np->phandle, nh->np->full_name, np->full_name); | |
258 | dup_count++; | |
259 | break; | |
260 | } | |
261 | } | |
262 | ||
263 | nh = kzalloc(sizeof(*nh), GFP_KERNEL); | |
264 | if (WARN_ON(!nh)) | |
265 | return; | |
266 | ||
267 | nh->np = np; | |
2118f4b8 | 268 | hash_add(phandle_ht, &nh->node, np->phandle); |
841ec213 GL |
269 | phandle_count++; |
270 | } | |
9697a559 | 271 | unittest(dup_count == 0, "Found %i duplicates in %i phandles\n", |
841ec213 GL |
272 | dup_count, phandle_count); |
273 | ||
274 | /* Clean up */ | |
2118f4b8 | 275 | hash_for_each_safe(phandle_ht, i, tmp, nh, node) { |
841ec213 GL |
276 | hash_del(&nh->node); |
277 | kfree(nh); | |
278 | } | |
279 | } | |
280 | ||
9697a559 | 281 | static void __init of_unittest_parse_phandle_with_args(void) |
53a42093 GL |
282 | { |
283 | struct device_node *np; | |
284 | struct of_phandle_args args; | |
cabb7d5b | 285 | int i, rc; |
53a42093 | 286 | |
53a42093 GL |
287 | np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); |
288 | if (!np) { | |
289 | pr_err("missing testcase data\n"); | |
290 | return; | |
291 | } | |
292 | ||
bd69f73f | 293 | rc = of_count_phandle_with_args(np, "phandle-list", "#phandle-cells"); |
9697a559 | 294 | unittest(rc == 7, "of_count_phandle_with_args() returned %i, expected 7\n", rc); |
bd69f73f | 295 | |
f7f951c2 | 296 | for (i = 0; i < 8; i++) { |
53a42093 | 297 | bool passed = true; |
3db316d0 | 298 | |
53a42093 GL |
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; | |
3db316d0 | 558 | |
a9f10ca7 GL |
559 | args.args_count = 0; |
560 | rc = of_irq_parse_one(np, i, &args); | |
561 | ||
562 | passed &= !rc; | |
563 | passed &= (args.args_count == 1); | |
564 | passed &= (args.args[0] == (i + 1)); | |
565 | ||
9697a559 | 566 | unittest(passed, "index %i - data error on node %s rc=%i\n", |
a9f10ca7 GL |
567 | i, args.np->full_name, rc); |
568 | } | |
569 | of_node_put(np); | |
570 | ||
571 | np = of_find_node_by_path("/testcase-data/interrupts/interrupts1"); | |
572 | if (!np) { | |
573 | pr_err("missing testcase data\n"); | |
574 | return; | |
575 | } | |
576 | ||
577 | for (i = 0; i < 4; i++) { | |
578 | bool passed = true; | |
3db316d0 | 579 | |
a9f10ca7 GL |
580 | args.args_count = 0; |
581 | rc = of_irq_parse_one(np, i, &args); | |
582 | ||
583 | /* Test the values from tests-phandle.dtsi */ | |
584 | switch (i) { | |
585 | case 0: | |
586 | passed &= !rc; | |
587 | passed &= (args.args_count == 1); | |
588 | passed &= (args.args[0] == 9); | |
589 | break; | |
590 | case 1: | |
591 | passed &= !rc; | |
592 | passed &= (args.args_count == 3); | |
593 | passed &= (args.args[0] == 10); | |
594 | passed &= (args.args[1] == 11); | |
595 | passed &= (args.args[2] == 12); | |
596 | break; | |
597 | case 2: | |
598 | passed &= !rc; | |
599 | passed &= (args.args_count == 2); | |
600 | passed &= (args.args[0] == 13); | |
601 | passed &= (args.args[1] == 14); | |
602 | break; | |
603 | case 3: | |
604 | passed &= !rc; | |
605 | passed &= (args.args_count == 2); | |
606 | passed &= (args.args[0] == 15); | |
607 | passed &= (args.args[1] == 16); | |
608 | break; | |
609 | default: | |
610 | passed = false; | |
611 | } | |
9697a559 | 612 | unittest(passed, "index %i - data error on node %s rc=%i\n", |
a9f10ca7 GL |
613 | i, args.np->full_name, rc); |
614 | } | |
615 | of_node_put(np); | |
616 | } | |
617 | ||
9697a559 | 618 | static void __init of_unittest_parse_interrupts_extended(void) |
79d97015 GL |
619 | { |
620 | struct device_node *np; | |
621 | struct of_phandle_args args; | |
622 | int i, rc; | |
623 | ||
624 | np = of_find_node_by_path("/testcase-data/interrupts/interrupts-extended0"); | |
625 | if (!np) { | |
626 | pr_err("missing testcase data\n"); | |
627 | return; | |
628 | } | |
629 | ||
630 | for (i = 0; i < 7; i++) { | |
631 | bool passed = true; | |
3db316d0 | 632 | |
79d97015 GL |
633 | rc = of_irq_parse_one(np, i, &args); |
634 | ||
635 | /* Test the values from tests-phandle.dtsi */ | |
636 | switch (i) { | |
637 | case 0: | |
638 | passed &= !rc; | |
639 | passed &= (args.args_count == 1); | |
640 | passed &= (args.args[0] == 1); | |
641 | break; | |
642 | case 1: | |
643 | passed &= !rc; | |
644 | passed &= (args.args_count == 3); | |
645 | passed &= (args.args[0] == 2); | |
646 | passed &= (args.args[1] == 3); | |
647 | passed &= (args.args[2] == 4); | |
648 | break; | |
649 | case 2: | |
650 | passed &= !rc; | |
651 | passed &= (args.args_count == 2); | |
652 | passed &= (args.args[0] == 5); | |
653 | passed &= (args.args[1] == 6); | |
654 | break; | |
655 | case 3: | |
656 | passed &= !rc; | |
657 | passed &= (args.args_count == 1); | |
658 | passed &= (args.args[0] == 9); | |
659 | break; | |
660 | case 4: | |
661 | passed &= !rc; | |
662 | passed &= (args.args_count == 3); | |
663 | passed &= (args.args[0] == 10); | |
664 | passed &= (args.args[1] == 11); | |
665 | passed &= (args.args[2] == 12); | |
666 | break; | |
667 | case 5: | |
668 | passed &= !rc; | |
669 | passed &= (args.args_count == 2); | |
670 | passed &= (args.args[0] == 13); | |
671 | passed &= (args.args[1] == 14); | |
672 | break; | |
673 | case 6: | |
674 | passed &= !rc; | |
675 | passed &= (args.args_count == 1); | |
676 | passed &= (args.args[0] == 15); | |
677 | break; | |
678 | default: | |
679 | passed = false; | |
680 | } | |
681 | ||
9697a559 | 682 | unittest(passed, "index %i - data error on node %s rc=%i\n", |
79d97015 GL |
683 | i, args.np->full_name, rc); |
684 | } | |
685 | of_node_put(np); | |
686 | } | |
687 | ||
afaed7a9 | 688 | static const struct of_device_id match_node_table[] = { |
1f42e5dd GL |
689 | { .data = "A", .name = "name0", }, /* Name alone is lowest priority */ |
690 | { .data = "B", .type = "type1", }, /* followed by type alone */ | |
691 | ||
692 | { .data = "Ca", .name = "name2", .type = "type1", }, /* followed by both together */ | |
693 | { .data = "Cb", .name = "name2", }, /* Only match when type doesn't match */ | |
694 | { .data = "Cc", .name = "name2", .type = "type2", }, | |
695 | ||
696 | { .data = "E", .compatible = "compat3" }, | |
697 | { .data = "G", .compatible = "compat2", }, | |
698 | { .data = "H", .compatible = "compat2", .name = "name5", }, | |
699 | { .data = "I", .compatible = "compat2", .type = "type1", }, | |
700 | { .data = "J", .compatible = "compat2", .type = "type1", .name = "name8", }, | |
701 | { .data = "K", .compatible = "compat2", .name = "name9", }, | |
702 | {} | |
703 | }; | |
704 | ||
705 | static struct { | |
706 | const char *path; | |
707 | const char *data; | |
708 | } match_node_tests[] = { | |
709 | { .path = "/testcase-data/match-node/name0", .data = "A", }, | |
710 | { .path = "/testcase-data/match-node/name1", .data = "B", }, | |
711 | { .path = "/testcase-data/match-node/a/name2", .data = "Ca", }, | |
712 | { .path = "/testcase-data/match-node/b/name2", .data = "Cb", }, | |
713 | { .path = "/testcase-data/match-node/c/name2", .data = "Cc", }, | |
714 | { .path = "/testcase-data/match-node/name3", .data = "E", }, | |
715 | { .path = "/testcase-data/match-node/name4", .data = "G", }, | |
716 | { .path = "/testcase-data/match-node/name5", .data = "H", }, | |
717 | { .path = "/testcase-data/match-node/name6", .data = "G", }, | |
718 | { .path = "/testcase-data/match-node/name7", .data = "I", }, | |
719 | { .path = "/testcase-data/match-node/name8", .data = "J", }, | |
720 | { .path = "/testcase-data/match-node/name9", .data = "K", }, | |
721 | }; | |
722 | ||
9697a559 | 723 | static void __init of_unittest_match_node(void) |
1f42e5dd GL |
724 | { |
725 | struct device_node *np; | |
726 | const struct of_device_id *match; | |
727 | int i; | |
728 | ||
729 | for (i = 0; i < ARRAY_SIZE(match_node_tests); i++) { | |
730 | np = of_find_node_by_path(match_node_tests[i].path); | |
731 | if (!np) { | |
9697a559 | 732 | unittest(0, "missing testcase node %s\n", |
1f42e5dd GL |
733 | match_node_tests[i].path); |
734 | continue; | |
735 | } | |
736 | ||
737 | match = of_match_node(match_node_table, np); | |
738 | if (!match) { | |
9697a559 | 739 | unittest(0, "%s didn't match anything\n", |
1f42e5dd GL |
740 | match_node_tests[i].path); |
741 | continue; | |
742 | } | |
743 | ||
744 | if (strcmp(match->data, match_node_tests[i].data) != 0) { | |
9697a559 | 745 | unittest(0, "%s got wrong match. expected %s, got %s\n", |
1f42e5dd GL |
746 | match_node_tests[i].path, match_node_tests[i].data, |
747 | (const char *)match->data); | |
748 | continue; | |
749 | } | |
9697a559 | 750 | unittest(1, "passed"); |
1f42e5dd GL |
751 | } |
752 | } | |
753 | ||
37791b6f GL |
754 | static const struct platform_device_info test_bus_info = { |
755 | .name = "unittest-bus", | |
851da976 | 756 | }; |
9697a559 | 757 | static void __init of_unittest_platform_populate(void) |
82c0f589 | 758 | { |
851da976 GL |
759 | int irq, rc; |
760 | struct device_node *np, *child, *grandchild; | |
37791b6f | 761 | struct platform_device *pdev, *test_bus; |
afaed7a9 | 762 | const struct of_device_id match[] = { |
fb2caa50 RH |
763 | { .compatible = "test-device", }, |
764 | {} | |
765 | }; | |
82c0f589 RH |
766 | |
767 | np = of_find_node_by_path("/testcase-data"); | |
768 | of_platform_populate(np, of_default_bus_match_table, NULL, NULL); | |
769 | ||
770 | /* Test that a missing irq domain returns -EPROBE_DEFER */ | |
771 | np = of_find_node_by_path("/testcase-data/testcase-device1"); | |
772 | pdev = of_find_device_by_node(np); | |
9697a559 | 773 | unittest(pdev, "device 1 creation failed\n"); |
7d1cdc89 | 774 | |
82c0f589 | 775 | irq = platform_get_irq(pdev, 0); |
9697a559 | 776 | unittest(irq == -EPROBE_DEFER, "device deferred probe failed - %d\n", irq); |
82c0f589 RH |
777 | |
778 | /* Test that a parsing failure does not return -EPROBE_DEFER */ | |
779 | np = of_find_node_by_path("/testcase-data/testcase-device2"); | |
780 | pdev = of_find_device_by_node(np); | |
9697a559 | 781 | unittest(pdev, "device 2 creation failed\n"); |
82c0f589 | 782 | irq = platform_get_irq(pdev, 0); |
9697a559 | 783 | unittest(irq < 0 && irq != -EPROBE_DEFER, "device parsing error failed - %d\n", irq); |
82c0f589 | 784 | |
716e1d49 | 785 | np = of_find_node_by_path("/testcase-data/platform-tests"); |
a2166ca5 | 786 | unittest(np, "No testcase data in device tree\n"); |
716e1d49 | 787 | if (!np) |
851da976 GL |
788 | return; |
789 | ||
37791b6f GL |
790 | test_bus = platform_device_register_full(&test_bus_info); |
791 | rc = PTR_ERR_OR_ZERO(test_bus); | |
a2166ca5 | 792 | unittest(!rc, "testbus registration failed; rc=%i\n", rc); |
716e1d49 | 793 | if (rc) |
fb2caa50 | 794 | return; |
37791b6f | 795 | test_bus->dev.of_node = np; |
fb2caa50 | 796 | |
37791b6f | 797 | of_platform_populate(np, match, NULL, &test_bus->dev); |
fb2caa50 | 798 | for_each_child_of_node(np, child) { |
fb2caa50 | 799 | for_each_child_of_node(child, grandchild) |
9697a559 | 800 | unittest(of_find_device_by_node(grandchild), |
fb2caa50 RH |
801 | "Could not create device for node '%s'\n", |
802 | grandchild->name); | |
803 | } | |
851da976 | 804 | |
37791b6f | 805 | of_platform_depopulate(&test_bus->dev); |
851da976 GL |
806 | for_each_child_of_node(np, child) { |
807 | for_each_child_of_node(child, grandchild) | |
9697a559 | 808 | unittest(!of_find_device_by_node(grandchild), |
851da976 GL |
809 | "device didn't get destroyed '%s'\n", |
810 | grandchild->name); | |
811 | } | |
812 | ||
37791b6f | 813 | platform_device_unregister(test_bus); |
851da976 | 814 | of_node_put(np); |
82c0f589 RH |
815 | } |
816 | ||
ae9304c9 GM |
817 | /** |
818 | * update_node_properties - adds the properties | |
819 | * of np into dup node (present in live tree) and | |
820 | * updates parent of children of np to dup. | |
821 | * | |
822 | * @np: node already present in live tree | |
823 | * @dup: node present in live tree to be updated | |
824 | */ | |
825 | static void update_node_properties(struct device_node *np, | |
826 | struct device_node *dup) | |
827 | { | |
828 | struct property *prop; | |
829 | struct device_node *child; | |
830 | ||
831 | for_each_property_of_node(np, prop) | |
832 | of_add_property(dup, prop); | |
833 | ||
834 | for_each_child_of_node(np, child) | |
835 | child->parent = dup; | |
836 | } | |
837 | ||
838 | /** | |
839 | * attach_node_and_children - attaches nodes | |
840 | * and its children to live tree | |
841 | * | |
842 | * @np: Node to attach to live tree | |
843 | */ | |
844 | static int attach_node_and_children(struct device_node *np) | |
845 | { | |
5063e25a | 846 | struct device_node *next, *dup, *child; |
3ce04b4a | 847 | unsigned long flags; |
ae9304c9 | 848 | |
5063e25a GL |
849 | dup = of_find_node_by_path(np->full_name); |
850 | if (dup) { | |
851 | update_node_properties(np, dup); | |
852 | return 0; | |
853 | } | |
ae9304c9 | 854 | |
5063e25a GL |
855 | child = np->child; |
856 | np->child = NULL; | |
3ce04b4a GM |
857 | |
858 | mutex_lock(&of_mutex); | |
859 | raw_spin_lock_irqsave(&devtree_lock, flags); | |
860 | np->sibling = np->parent->child; | |
861 | np->parent->child = np; | |
862 | of_node_clear_flag(np, OF_DETACHED); | |
863 | raw_spin_unlock_irqrestore(&devtree_lock, flags); | |
864 | ||
865 | __of_attach_node_sysfs(np); | |
866 | mutex_unlock(&of_mutex); | |
867 | ||
5063e25a GL |
868 | while (child) { |
869 | next = child->sibling; | |
870 | attach_node_and_children(child); | |
871 | child = next; | |
ae9304c9 GM |
872 | } |
873 | ||
874 | return 0; | |
875 | } | |
876 | ||
877 | /** | |
9697a559 | 878 | * unittest_data_add - Reads, copies data from |
ae9304c9 GM |
879 | * linked tree and attaches it to the live tree |
880 | */ | |
9697a559 | 881 | static int __init unittest_data_add(void) |
ae9304c9 | 882 | { |
9697a559 WL |
883 | void *unittest_data; |
884 | struct device_node *unittest_data_node, *np; | |
c8547119 FR |
885 | /* |
886 | * __dtb_testcases_begin[] and __dtb_testcases_end[] are magically | |
887 | * created by cmd_dt_S_dtb in scripts/Makefile.lib | |
888 | */ | |
ae9304c9 GM |
889 | extern uint8_t __dtb_testcases_begin[]; |
890 | extern uint8_t __dtb_testcases_end[]; | |
891 | const int size = __dtb_testcases_end - __dtb_testcases_begin; | |
2eb46da2 | 892 | int rc; |
ae9304c9 | 893 | |
b951f9dc | 894 | if (!size) { |
ae9304c9 GM |
895 | pr_warn("%s: No testcase data to attach; not running tests\n", |
896 | __func__); | |
897 | return -ENODATA; | |
898 | } | |
899 | ||
900 | /* creating copy */ | |
9697a559 | 901 | unittest_data = kmemdup(__dtb_testcases_begin, size, GFP_KERNEL); |
ae9304c9 | 902 | |
9697a559 WL |
903 | if (!unittest_data) { |
904 | pr_warn("%s: Failed to allocate memory for unittest_data; " | |
ae9304c9 GM |
905 | "not running tests\n", __func__); |
906 | return -ENOMEM; | |
907 | } | |
9697a559 WL |
908 | of_fdt_unflatten_tree(unittest_data, &unittest_data_node); |
909 | if (!unittest_data_node) { | |
b951f9dc GM |
910 | pr_warn("%s: No tree to attach; not running tests\n", __func__); |
911 | return -ENODATA; | |
912 | } | |
9697a559 WL |
913 | of_node_set_flag(unittest_data_node, OF_DETACHED); |
914 | rc = of_resolve_phandles(unittest_data_node); | |
2eb46da2 GL |
915 | if (rc) { |
916 | pr_err("%s: Failed to resolve phandles (rc=%i)\n", __func__, rc); | |
917 | return -EINVAL; | |
918 | } | |
b951f9dc | 919 | |
5063e25a | 920 | if (!of_root) { |
9697a559 | 921 | of_root = unittest_data_node; |
b951f9dc GM |
922 | for_each_of_allnodes(np) |
923 | __of_attach_node_sysfs(np); | |
924 | of_aliases = of_find_node_by_path("/aliases"); | |
925 | of_chosen = of_find_node_by_path("/chosen"); | |
926 | return 0; | |
927 | } | |
ae9304c9 GM |
928 | |
929 | /* attach the sub-tree to live tree */ | |
9697a559 | 930 | np = unittest_data_node->child; |
5063e25a GL |
931 | while (np) { |
932 | struct device_node *next = np->sibling; | |
3db316d0 | 933 | |
5063e25a GL |
934 | np->parent = of_root; |
935 | attach_node_and_children(np); | |
936 | np = next; | |
937 | } | |
938 | return 0; | |
ae9304c9 GM |
939 | } |
940 | ||
177d271c PA |
941 | #ifdef CONFIG_OF_OVERLAY |
942 | ||
9697a559 | 943 | static int unittest_probe(struct platform_device *pdev) |
177d271c PA |
944 | { |
945 | struct device *dev = &pdev->dev; | |
946 | struct device_node *np = dev->of_node; | |
947 | ||
948 | if (np == NULL) { | |
949 | dev_err(dev, "No OF data for device\n"); | |
950 | return -EINVAL; | |
951 | ||
952 | } | |
953 | ||
954 | dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name); | |
6b1271de PA |
955 | |
956 | of_platform_populate(np, NULL, NULL, &pdev->dev); | |
957 | ||
177d271c PA |
958 | return 0; |
959 | } | |
960 | ||
9697a559 | 961 | static int unittest_remove(struct platform_device *pdev) |
177d271c PA |
962 | { |
963 | struct device *dev = &pdev->dev; | |
964 | struct device_node *np = dev->of_node; | |
965 | ||
966 | dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name); | |
967 | return 0; | |
968 | } | |
969 | ||
a2166ca5 | 970 | static const struct of_device_id unittest_match[] = { |
9697a559 | 971 | { .compatible = "unittest", }, |
177d271c PA |
972 | {}, |
973 | }; | |
177d271c | 974 | |
9697a559 WL |
975 | static struct platform_driver unittest_driver = { |
976 | .probe = unittest_probe, | |
977 | .remove = unittest_remove, | |
177d271c | 978 | .driver = { |
9697a559 | 979 | .name = "unittest", |
177d271c | 980 | .owner = THIS_MODULE, |
9697a559 | 981 | .of_match_table = of_match_ptr(unittest_match), |
177d271c PA |
982 | }, |
983 | }; | |
984 | ||
985 | /* get the platform device instantiated at the path */ | |
986 | static struct platform_device *of_path_to_platform_device(const char *path) | |
987 | { | |
988 | struct device_node *np; | |
989 | struct platform_device *pdev; | |
990 | ||
991 | np = of_find_node_by_path(path); | |
992 | if (np == NULL) | |
993 | return NULL; | |
994 | ||
995 | pdev = of_find_device_by_node(np); | |
996 | of_node_put(np); | |
997 | ||
998 | return pdev; | |
999 | } | |
1000 | ||
1001 | /* find out if a platform device exists at that path */ | |
1002 | static int of_path_platform_device_exists(const char *path) | |
1003 | { | |
1004 | struct platform_device *pdev; | |
1005 | ||
1006 | pdev = of_path_to_platform_device(path); | |
1007 | platform_device_put(pdev); | |
1008 | return pdev != NULL; | |
1009 | } | |
1010 | ||
4252de39 | 1011 | #if IS_BUILTIN(CONFIG_I2C) |
d5e75500 PA |
1012 | |
1013 | /* get the i2c client device instantiated at the path */ | |
1014 | static struct i2c_client *of_path_to_i2c_client(const char *path) | |
1015 | { | |
1016 | struct device_node *np; | |
1017 | struct i2c_client *client; | |
1018 | ||
1019 | np = of_find_node_by_path(path); | |
1020 | if (np == NULL) | |
1021 | return NULL; | |
1022 | ||
1023 | client = of_find_i2c_device_by_node(np); | |
1024 | of_node_put(np); | |
1025 | ||
1026 | return client; | |
1027 | } | |
1028 | ||
1029 | /* find out if a i2c client device exists at that path */ | |
1030 | static int of_path_i2c_client_exists(const char *path) | |
1031 | { | |
1032 | struct i2c_client *client; | |
1033 | ||
1034 | client = of_path_to_i2c_client(path); | |
1035 | if (client) | |
1036 | put_device(&client->dev); | |
1037 | return client != NULL; | |
1038 | } | |
1039 | #else | |
1040 | static int of_path_i2c_client_exists(const char *path) | |
1041 | { | |
1042 | return 0; | |
1043 | } | |
1044 | #endif | |
1045 | ||
1046 | enum overlay_type { | |
1047 | PDEV_OVERLAY, | |
1048 | I2C_OVERLAY | |
1049 | }; | |
1050 | ||
1051 | static int of_path_device_type_exists(const char *path, | |
1052 | enum overlay_type ovtype) | |
177d271c | 1053 | { |
d5e75500 PA |
1054 | switch (ovtype) { |
1055 | case PDEV_OVERLAY: | |
1056 | return of_path_platform_device_exists(path); | |
1057 | case I2C_OVERLAY: | |
1058 | return of_path_i2c_client_exists(path); | |
1059 | } | |
1060 | return 0; | |
1061 | } | |
1062 | ||
9697a559 | 1063 | static const char *unittest_path(int nr, enum overlay_type ovtype) |
d5e75500 PA |
1064 | { |
1065 | const char *base; | |
177d271c PA |
1066 | static char buf[256]; |
1067 | ||
d5e75500 PA |
1068 | switch (ovtype) { |
1069 | case PDEV_OVERLAY: | |
1070 | base = "/testcase-data/overlay-node/test-bus"; | |
1071 | break; | |
1072 | case I2C_OVERLAY: | |
1073 | base = "/testcase-data/overlay-node/test-bus/i2c-test-bus"; | |
1074 | break; | |
1075 | default: | |
1076 | buf[0] = '\0'; | |
1077 | return buf; | |
1078 | } | |
9697a559 | 1079 | snprintf(buf, sizeof(buf) - 1, "%s/test-unittest%d", base, nr); |
177d271c | 1080 | buf[sizeof(buf) - 1] = '\0'; |
177d271c PA |
1081 | return buf; |
1082 | } | |
1083 | ||
9697a559 | 1084 | static int of_unittest_device_exists(int unittest_nr, enum overlay_type ovtype) |
d5e75500 PA |
1085 | { |
1086 | const char *path; | |
1087 | ||
9697a559 | 1088 | path = unittest_path(unittest_nr, ovtype); |
d5e75500 PA |
1089 | |
1090 | switch (ovtype) { | |
1091 | case PDEV_OVERLAY: | |
1092 | return of_path_platform_device_exists(path); | |
1093 | case I2C_OVERLAY: | |
1094 | return of_path_i2c_client_exists(path); | |
1095 | } | |
1096 | return 0; | |
1097 | } | |
1098 | ||
177d271c PA |
1099 | static const char *overlay_path(int nr) |
1100 | { | |
1101 | static char buf[256]; | |
1102 | ||
1103 | snprintf(buf, sizeof(buf) - 1, | |
1104 | "/testcase-data/overlay%d", nr); | |
1105 | buf[sizeof(buf) - 1] = '\0'; | |
1106 | ||
1107 | return buf; | |
1108 | } | |
1109 | ||
1110 | static const char *bus_path = "/testcase-data/overlay-node/test-bus"; | |
1111 | ||
9697a559 | 1112 | static int of_unittest_apply_overlay(int unittest_nr, int overlay_nr, |
177d271c PA |
1113 | int *overlay_id) |
1114 | { | |
1115 | struct device_node *np = NULL; | |
1116 | int ret, id = -1; | |
1117 | ||
1118 | np = of_find_node_by_path(overlay_path(overlay_nr)); | |
1119 | if (np == NULL) { | |
9697a559 | 1120 | unittest(0, "could not find overlay node @\"%s\"\n", |
177d271c PA |
1121 | overlay_path(overlay_nr)); |
1122 | ret = -EINVAL; | |
1123 | goto out; | |
1124 | } | |
1125 | ||
1126 | ret = of_overlay_create(np); | |
1127 | if (ret < 0) { | |
9697a559 | 1128 | unittest(0, "could not create overlay from \"%s\"\n", |
177d271c PA |
1129 | overlay_path(overlay_nr)); |
1130 | goto out; | |
1131 | } | |
1132 | id = ret; | |
1133 | ||
1134 | ret = 0; | |
1135 | ||
1136 | out: | |
1137 | of_node_put(np); | |
1138 | ||
1139 | if (overlay_id) | |
1140 | *overlay_id = id; | |
1141 | ||
1142 | return ret; | |
1143 | } | |
1144 | ||
1145 | /* apply an overlay while checking before and after states */ | |
9697a559 | 1146 | static int of_unittest_apply_overlay_check(int overlay_nr, int unittest_nr, |
d5e75500 | 1147 | int before, int after, enum overlay_type ovtype) |
177d271c PA |
1148 | { |
1149 | int ret; | |
1150 | ||
9697a559 WL |
1151 | /* unittest device must not be in before state */ |
1152 | if (of_unittest_device_exists(unittest_nr, ovtype) != before) { | |
1153 | unittest(0, "overlay @\"%s\" with device @\"%s\" %s\n", | |
177d271c | 1154 | overlay_path(overlay_nr), |
9697a559 | 1155 | unittest_path(unittest_nr, ovtype), |
177d271c PA |
1156 | !before ? "enabled" : "disabled"); |
1157 | return -EINVAL; | |
1158 | } | |
1159 | ||
9697a559 | 1160 | ret = of_unittest_apply_overlay(overlay_nr, unittest_nr, NULL); |
177d271c | 1161 | if (ret != 0) { |
9697a559 | 1162 | /* of_unittest_apply_overlay already called unittest() */ |
177d271c PA |
1163 | return ret; |
1164 | } | |
1165 | ||
9697a559 WL |
1166 | /* unittest device must be to set to after state */ |
1167 | if (of_unittest_device_exists(unittest_nr, ovtype) != after) { | |
1168 | unittest(0, "overlay @\"%s\" failed to create @\"%s\" %s\n", | |
177d271c | 1169 | overlay_path(overlay_nr), |
9697a559 | 1170 | unittest_path(unittest_nr, ovtype), |
177d271c PA |
1171 | !after ? "enabled" : "disabled"); |
1172 | return -EINVAL; | |
1173 | } | |
1174 | ||
1175 | return 0; | |
1176 | } | |
1177 | ||
1178 | /* apply an overlay and then revert it while checking before, after states */ | |
9697a559 WL |
1179 | static int of_unittest_apply_revert_overlay_check(int overlay_nr, |
1180 | int unittest_nr, int before, int after, | |
d5e75500 | 1181 | enum overlay_type ovtype) |
177d271c PA |
1182 | { |
1183 | int ret, ov_id; | |
1184 | ||
9697a559 WL |
1185 | /* unittest device must be in before state */ |
1186 | if (of_unittest_device_exists(unittest_nr, ovtype) != before) { | |
1187 | unittest(0, "overlay @\"%s\" with device @\"%s\" %s\n", | |
177d271c | 1188 | overlay_path(overlay_nr), |
9697a559 | 1189 | unittest_path(unittest_nr, ovtype), |
177d271c PA |
1190 | !before ? "enabled" : "disabled"); |
1191 | return -EINVAL; | |
1192 | } | |
1193 | ||
1194 | /* apply the overlay */ | |
9697a559 | 1195 | ret = of_unittest_apply_overlay(overlay_nr, unittest_nr, &ov_id); |
177d271c | 1196 | if (ret != 0) { |
9697a559 | 1197 | /* of_unittest_apply_overlay already called unittest() */ |
177d271c PA |
1198 | return ret; |
1199 | } | |
1200 | ||
9697a559 WL |
1201 | /* unittest device must be in after state */ |
1202 | if (of_unittest_device_exists(unittest_nr, ovtype) != after) { | |
1203 | unittest(0, "overlay @\"%s\" failed to create @\"%s\" %s\n", | |
177d271c | 1204 | overlay_path(overlay_nr), |
9697a559 | 1205 | unittest_path(unittest_nr, ovtype), |
177d271c PA |
1206 | !after ? "enabled" : "disabled"); |
1207 | return -EINVAL; | |
1208 | } | |
1209 | ||
1210 | ret = of_overlay_destroy(ov_id); | |
1211 | if (ret != 0) { | |
9697a559 | 1212 | unittest(0, "overlay @\"%s\" failed to be destroyed @\"%s\"\n", |
177d271c | 1213 | overlay_path(overlay_nr), |
9697a559 | 1214 | unittest_path(unittest_nr, ovtype)); |
177d271c PA |
1215 | return ret; |
1216 | } | |
1217 | ||
9697a559 WL |
1218 | /* unittest device must be again in before state */ |
1219 | if (of_unittest_device_exists(unittest_nr, PDEV_OVERLAY) != before) { | |
1220 | unittest(0, "overlay @\"%s\" with device @\"%s\" %s\n", | |
177d271c | 1221 | overlay_path(overlay_nr), |
9697a559 | 1222 | unittest_path(unittest_nr, ovtype), |
177d271c PA |
1223 | !before ? "enabled" : "disabled"); |
1224 | return -EINVAL; | |
1225 | } | |
1226 | ||
1227 | return 0; | |
1228 | } | |
1229 | ||
1230 | /* test activation of device */ | |
9697a559 | 1231 | static void of_unittest_overlay_0(void) |
177d271c PA |
1232 | { |
1233 | int ret; | |
1234 | ||
1235 | /* device should enable */ | |
9697a559 | 1236 | ret = of_unittest_apply_overlay_check(0, 0, 0, 1, PDEV_OVERLAY); |
177d271c PA |
1237 | if (ret != 0) |
1238 | return; | |
1239 | ||
9697a559 | 1240 | unittest(1, "overlay test %d passed\n", 0); |
177d271c PA |
1241 | } |
1242 | ||
1243 | /* test deactivation of device */ | |
9697a559 | 1244 | static void of_unittest_overlay_1(void) |
177d271c PA |
1245 | { |
1246 | int ret; | |
1247 | ||
1248 | /* device should disable */ | |
9697a559 | 1249 | ret = of_unittest_apply_overlay_check(1, 1, 1, 0, PDEV_OVERLAY); |
177d271c PA |
1250 | if (ret != 0) |
1251 | return; | |
1252 | ||
9697a559 | 1253 | unittest(1, "overlay test %d passed\n", 1); |
177d271c PA |
1254 | } |
1255 | ||
1256 | /* test activation of device */ | |
9697a559 | 1257 | static void of_unittest_overlay_2(void) |
177d271c PA |
1258 | { |
1259 | int ret; | |
1260 | ||
1261 | /* device should enable */ | |
9697a559 | 1262 | ret = of_unittest_apply_overlay_check(2, 2, 0, 1, PDEV_OVERLAY); |
177d271c PA |
1263 | if (ret != 0) |
1264 | return; | |
1265 | ||
9697a559 | 1266 | unittest(1, "overlay test %d passed\n", 2); |
177d271c PA |
1267 | } |
1268 | ||
1269 | /* test deactivation of device */ | |
9697a559 | 1270 | static void of_unittest_overlay_3(void) |
177d271c PA |
1271 | { |
1272 | int ret; | |
1273 | ||
1274 | /* device should disable */ | |
9697a559 | 1275 | ret = of_unittest_apply_overlay_check(3, 3, 1, 0, PDEV_OVERLAY); |
177d271c PA |
1276 | if (ret != 0) |
1277 | return; | |
1278 | ||
9697a559 | 1279 | unittest(1, "overlay test %d passed\n", 3); |
177d271c PA |
1280 | } |
1281 | ||
1282 | /* test activation of a full device node */ | |
9697a559 | 1283 | static void of_unittest_overlay_4(void) |
177d271c PA |
1284 | { |
1285 | int ret; | |
1286 | ||
1287 | /* device should disable */ | |
9697a559 | 1288 | ret = of_unittest_apply_overlay_check(4, 4, 0, 1, PDEV_OVERLAY); |
177d271c PA |
1289 | if (ret != 0) |
1290 | return; | |
1291 | ||
9697a559 | 1292 | unittest(1, "overlay test %d passed\n", 4); |
177d271c PA |
1293 | } |
1294 | ||
1295 | /* test overlay apply/revert sequence */ | |
9697a559 | 1296 | static void of_unittest_overlay_5(void) |
177d271c PA |
1297 | { |
1298 | int ret; | |
1299 | ||
1300 | /* device should disable */ | |
9697a559 | 1301 | ret = of_unittest_apply_revert_overlay_check(5, 5, 0, 1, PDEV_OVERLAY); |
177d271c PA |
1302 | if (ret != 0) |
1303 | return; | |
1304 | ||
9697a559 | 1305 | unittest(1, "overlay test %d passed\n", 5); |
177d271c PA |
1306 | } |
1307 | ||
1308 | /* test overlay application in sequence */ | |
9697a559 | 1309 | static void of_unittest_overlay_6(void) |
177d271c PA |
1310 | { |
1311 | struct device_node *np; | |
1312 | int ret, i, ov_id[2]; | |
9697a559 | 1313 | int overlay_nr = 6, unittest_nr = 6; |
177d271c PA |
1314 | int before = 0, after = 1; |
1315 | ||
9697a559 | 1316 | /* unittest device must be in before state */ |
177d271c | 1317 | for (i = 0; i < 2; i++) { |
9697a559 | 1318 | if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY) |
177d271c | 1319 | != before) { |
9697a559 | 1320 | unittest(0, "overlay @\"%s\" with device @\"%s\" %s\n", |
177d271c | 1321 | overlay_path(overlay_nr + i), |
9697a559 | 1322 | unittest_path(unittest_nr + i, |
d5e75500 | 1323 | PDEV_OVERLAY), |
177d271c PA |
1324 | !before ? "enabled" : "disabled"); |
1325 | return; | |
1326 | } | |
1327 | } | |
1328 | ||
1329 | /* apply the overlays */ | |
1330 | for (i = 0; i < 2; i++) { | |
1331 | ||
1332 | np = of_find_node_by_path(overlay_path(overlay_nr + i)); | |
1333 | if (np == NULL) { | |
9697a559 | 1334 | unittest(0, "could not find overlay node @\"%s\"\n", |
177d271c PA |
1335 | overlay_path(overlay_nr + i)); |
1336 | return; | |
1337 | } | |
1338 | ||
1339 | ret = of_overlay_create(np); | |
1340 | if (ret < 0) { | |
9697a559 | 1341 | unittest(0, "could not create overlay from \"%s\"\n", |
177d271c PA |
1342 | overlay_path(overlay_nr + i)); |
1343 | return; | |
1344 | } | |
1345 | ov_id[i] = ret; | |
1346 | } | |
1347 | ||
1348 | for (i = 0; i < 2; i++) { | |
9697a559 WL |
1349 | /* unittest device must be in after state */ |
1350 | if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY) | |
177d271c | 1351 | != after) { |
9697a559 | 1352 | unittest(0, "overlay @\"%s\" failed @\"%s\" %s\n", |
177d271c | 1353 | overlay_path(overlay_nr + i), |
9697a559 | 1354 | unittest_path(unittest_nr + i, |
d5e75500 | 1355 | PDEV_OVERLAY), |
177d271c PA |
1356 | !after ? "enabled" : "disabled"); |
1357 | return; | |
1358 | } | |
1359 | } | |
1360 | ||
1361 | for (i = 1; i >= 0; i--) { | |
1362 | ret = of_overlay_destroy(ov_id[i]); | |
1363 | if (ret != 0) { | |
9697a559 | 1364 | unittest(0, "overlay @\"%s\" failed destroy @\"%s\"\n", |
177d271c | 1365 | overlay_path(overlay_nr + i), |
9697a559 | 1366 | unittest_path(unittest_nr + i, |
d5e75500 | 1367 | PDEV_OVERLAY)); |
177d271c PA |
1368 | return; |
1369 | } | |
1370 | } | |
1371 | ||
1372 | for (i = 0; i < 2; i++) { | |
9697a559 WL |
1373 | /* unittest device must be again in before state */ |
1374 | if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY) | |
177d271c | 1375 | != before) { |
9697a559 | 1376 | unittest(0, "overlay @\"%s\" with device @\"%s\" %s\n", |
177d271c | 1377 | overlay_path(overlay_nr + i), |
9697a559 | 1378 | unittest_path(unittest_nr + i, |
d5e75500 | 1379 | PDEV_OVERLAY), |
177d271c PA |
1380 | !before ? "enabled" : "disabled"); |
1381 | return; | |
1382 | } | |
1383 | } | |
1384 | ||
9697a559 | 1385 | unittest(1, "overlay test %d passed\n", 6); |
177d271c PA |
1386 | } |
1387 | ||
1388 | /* test overlay application in sequence */ | |
9697a559 | 1389 | static void of_unittest_overlay_8(void) |
177d271c PA |
1390 | { |
1391 | struct device_node *np; | |
1392 | int ret, i, ov_id[2]; | |
9697a559 | 1393 | int overlay_nr = 8, unittest_nr = 8; |
177d271c PA |
1394 | |
1395 | /* we don't care about device state in this test */ | |
1396 | ||
1397 | /* apply the overlays */ | |
1398 | for (i = 0; i < 2; i++) { | |
1399 | ||
1400 | np = of_find_node_by_path(overlay_path(overlay_nr + i)); | |
1401 | if (np == NULL) { | |
9697a559 | 1402 | unittest(0, "could not find overlay node @\"%s\"\n", |
177d271c PA |
1403 | overlay_path(overlay_nr + i)); |
1404 | return; | |
1405 | } | |
1406 | ||
1407 | ret = of_overlay_create(np); | |
1408 | if (ret < 0) { | |
9697a559 | 1409 | unittest(0, "could not create overlay from \"%s\"\n", |
177d271c PA |
1410 | overlay_path(overlay_nr + i)); |
1411 | return; | |
1412 | } | |
1413 | ov_id[i] = ret; | |
1414 | } | |
1415 | ||
1416 | /* now try to remove first overlay (it should fail) */ | |
1417 | ret = of_overlay_destroy(ov_id[0]); | |
1418 | if (ret == 0) { | |
9697a559 | 1419 | unittest(0, "overlay @\"%s\" was destroyed @\"%s\"\n", |
177d271c | 1420 | overlay_path(overlay_nr + 0), |
9697a559 | 1421 | unittest_path(unittest_nr, |
d5e75500 | 1422 | PDEV_OVERLAY)); |
177d271c PA |
1423 | return; |
1424 | } | |
1425 | ||
1426 | /* removing them in order should work */ | |
1427 | for (i = 1; i >= 0; i--) { | |
1428 | ret = of_overlay_destroy(ov_id[i]); | |
1429 | if (ret != 0) { | |
9697a559 | 1430 | unittest(0, "overlay @\"%s\" not destroyed @\"%s\"\n", |
177d271c | 1431 | overlay_path(overlay_nr + i), |
9697a559 | 1432 | unittest_path(unittest_nr, |
d5e75500 | 1433 | PDEV_OVERLAY)); |
177d271c PA |
1434 | return; |
1435 | } | |
1436 | } | |
1437 | ||
9697a559 | 1438 | unittest(1, "overlay test %d passed\n", 8); |
177d271c PA |
1439 | } |
1440 | ||
6b1271de | 1441 | /* test insertion of a bus with parent devices */ |
9697a559 | 1442 | static void of_unittest_overlay_10(void) |
6b1271de PA |
1443 | { |
1444 | int ret; | |
1445 | char *child_path; | |
1446 | ||
1447 | /* device should disable */ | |
9697a559 WL |
1448 | ret = of_unittest_apply_overlay_check(10, 10, 0, 1, PDEV_OVERLAY); |
1449 | if (unittest(ret == 0, | |
d5e75500 | 1450 | "overlay test %d failed; overlay application\n", 10)) |
6b1271de PA |
1451 | return; |
1452 | ||
9697a559 WL |
1453 | child_path = kasprintf(GFP_KERNEL, "%s/test-unittest101", |
1454 | unittest_path(10, PDEV_OVERLAY)); | |
1455 | if (unittest(child_path, "overlay test %d failed; kasprintf\n", 10)) | |
6b1271de PA |
1456 | return; |
1457 | ||
d5e75500 | 1458 | ret = of_path_device_type_exists(child_path, PDEV_OVERLAY); |
6b1271de | 1459 | kfree(child_path); |
9697a559 | 1460 | if (unittest(ret, "overlay test %d failed; no child device\n", 10)) |
6b1271de PA |
1461 | return; |
1462 | } | |
1463 | ||
1464 | /* test insertion of a bus with parent devices (and revert) */ | |
9697a559 | 1465 | static void of_unittest_overlay_11(void) |
6b1271de PA |
1466 | { |
1467 | int ret; | |
1468 | ||
1469 | /* device should disable */ | |
9697a559 | 1470 | ret = of_unittest_apply_revert_overlay_check(11, 11, 0, 1, |
d5e75500 | 1471 | PDEV_OVERLAY); |
9697a559 | 1472 | if (unittest(ret == 0, |
d5e75500 PA |
1473 | "overlay test %d failed; overlay application\n", 11)) |
1474 | return; | |
1475 | } | |
1476 | ||
4252de39 | 1477 | #if IS_BUILTIN(CONFIG_I2C) && IS_ENABLED(CONFIG_OF_OVERLAY) |
d5e75500 | 1478 | |
9697a559 | 1479 | struct unittest_i2c_bus_data { |
d5e75500 PA |
1480 | struct platform_device *pdev; |
1481 | struct i2c_adapter adap; | |
1482 | }; | |
1483 | ||
9697a559 | 1484 | static int unittest_i2c_master_xfer(struct i2c_adapter *adap, |
d5e75500 PA |
1485 | struct i2c_msg *msgs, int num) |
1486 | { | |
9697a559 | 1487 | struct unittest_i2c_bus_data *std = i2c_get_adapdata(adap); |
d5e75500 PA |
1488 | |
1489 | (void)std; | |
1490 | ||
1491 | return num; | |
1492 | } | |
1493 | ||
9697a559 | 1494 | static u32 unittest_i2c_functionality(struct i2c_adapter *adap) |
d5e75500 PA |
1495 | { |
1496 | return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL; | |
1497 | } | |
1498 | ||
9697a559 WL |
1499 | static const struct i2c_algorithm unittest_i2c_algo = { |
1500 | .master_xfer = unittest_i2c_master_xfer, | |
1501 | .functionality = unittest_i2c_functionality, | |
d5e75500 PA |
1502 | }; |
1503 | ||
9697a559 | 1504 | static int unittest_i2c_bus_probe(struct platform_device *pdev) |
d5e75500 PA |
1505 | { |
1506 | struct device *dev = &pdev->dev; | |
1507 | struct device_node *np = dev->of_node; | |
9697a559 | 1508 | struct unittest_i2c_bus_data *std; |
d5e75500 PA |
1509 | struct i2c_adapter *adap; |
1510 | int ret; | |
1511 | ||
1512 | if (np == NULL) { | |
1513 | dev_err(dev, "No OF data for device\n"); | |
1514 | return -EINVAL; | |
1515 | ||
1516 | } | |
1517 | ||
1518 | dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name); | |
1519 | ||
1520 | std = devm_kzalloc(dev, sizeof(*std), GFP_KERNEL); | |
1521 | if (!std) { | |
9697a559 | 1522 | dev_err(dev, "Failed to allocate unittest i2c data\n"); |
d5e75500 PA |
1523 | return -ENOMEM; |
1524 | } | |
1525 | ||
1526 | /* link them together */ | |
1527 | std->pdev = pdev; | |
1528 | platform_set_drvdata(pdev, std); | |
1529 | ||
1530 | adap = &std->adap; | |
1531 | i2c_set_adapdata(adap, std); | |
1532 | adap->nr = -1; | |
1533 | strlcpy(adap->name, pdev->name, sizeof(adap->name)); | |
1534 | adap->class = I2C_CLASS_DEPRECATED; | |
9697a559 | 1535 | adap->algo = &unittest_i2c_algo; |
d5e75500 PA |
1536 | adap->dev.parent = dev; |
1537 | adap->dev.of_node = dev->of_node; | |
1538 | adap->timeout = 5 * HZ; | |
1539 | adap->retries = 3; | |
1540 | ||
1541 | ret = i2c_add_numbered_adapter(adap); | |
1542 | if (ret != 0) { | |
1543 | dev_err(dev, "Failed to add I2C adapter\n"); | |
1544 | return ret; | |
1545 | } | |
1546 | ||
1547 | return 0; | |
1548 | } | |
1549 | ||
9697a559 | 1550 | static int unittest_i2c_bus_remove(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 = platform_get_drvdata(pdev); |
d5e75500 PA |
1555 | |
1556 | dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name); | |
1557 | i2c_del_adapter(&std->adap); | |
1558 | ||
1559 | return 0; | |
1560 | } | |
1561 | ||
a2166ca5 | 1562 | static const struct of_device_id unittest_i2c_bus_match[] = { |
9697a559 | 1563 | { .compatible = "unittest-i2c-bus", }, |
d5e75500 PA |
1564 | {}, |
1565 | }; | |
1566 | ||
9697a559 WL |
1567 | static struct platform_driver unittest_i2c_bus_driver = { |
1568 | .probe = unittest_i2c_bus_probe, | |
1569 | .remove = unittest_i2c_bus_remove, | |
d5e75500 | 1570 | .driver = { |
9697a559 WL |
1571 | .name = "unittest-i2c-bus", |
1572 | .of_match_table = of_match_ptr(unittest_i2c_bus_match), | |
d5e75500 PA |
1573 | }, |
1574 | }; | |
1575 | ||
9697a559 | 1576 | static int unittest_i2c_dev_probe(struct i2c_client *client, |
d5e75500 PA |
1577 | const struct i2c_device_id *id) |
1578 | { | |
1579 | struct device *dev = &client->dev; | |
1580 | struct device_node *np = client->dev.of_node; | |
1581 | ||
1582 | if (!np) { | |
1583 | dev_err(dev, "No OF node\n"); | |
1584 | return -EINVAL; | |
1585 | } | |
1586 | ||
1587 | dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name); | |
1588 | ||
1589 | return 0; | |
1590 | }; | |
1591 | ||
9697a559 | 1592 | static int unittest_i2c_dev_remove(struct i2c_client *client) |
d5e75500 PA |
1593 | { |
1594 | struct device *dev = &client->dev; | |
1595 | struct device_node *np = client->dev.of_node; | |
1596 | ||
1597 | dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name); | |
1598 | return 0; | |
1599 | } | |
1600 | ||
9697a559 WL |
1601 | static const struct i2c_device_id unittest_i2c_dev_id[] = { |
1602 | { .name = "unittest-i2c-dev" }, | |
d5e75500 PA |
1603 | { } |
1604 | }; | |
1605 | ||
9697a559 | 1606 | static struct i2c_driver unittest_i2c_dev_driver = { |
d5e75500 | 1607 | .driver = { |
9697a559 | 1608 | .name = "unittest-i2c-dev", |
d5e75500 PA |
1609 | .owner = THIS_MODULE, |
1610 | }, | |
9697a559 WL |
1611 | .probe = unittest_i2c_dev_probe, |
1612 | .remove = unittest_i2c_dev_remove, | |
1613 | .id_table = unittest_i2c_dev_id, | |
d5e75500 PA |
1614 | }; |
1615 | ||
4252de39 | 1616 | #if IS_BUILTIN(CONFIG_I2C_MUX) |
d5e75500 | 1617 | |
9697a559 | 1618 | struct unittest_i2c_mux_data { |
d5e75500 PA |
1619 | int nchans; |
1620 | struct i2c_adapter *adap[]; | |
1621 | }; | |
1622 | ||
9697a559 | 1623 | static int unittest_i2c_mux_select_chan(struct i2c_adapter *adap, |
d5e75500 PA |
1624 | void *client, u32 chan) |
1625 | { | |
1626 | return 0; | |
1627 | } | |
1628 | ||
9697a559 | 1629 | static int unittest_i2c_mux_probe(struct i2c_client *client, |
d5e75500 PA |
1630 | const struct i2c_device_id *id) |
1631 | { | |
1632 | int ret, i, nchans, size; | |
1633 | struct device *dev = &client->dev; | |
1634 | struct i2c_adapter *adap = to_i2c_adapter(dev->parent); | |
1635 | struct device_node *np = client->dev.of_node, *child; | |
9697a559 | 1636 | struct unittest_i2c_mux_data *stm; |
d5e75500 PA |
1637 | u32 reg, max_reg; |
1638 | ||
1639 | dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name); | |
1640 | ||
1641 | if (!np) { | |
1642 | dev_err(dev, "No OF node\n"); | |
1643 | return -EINVAL; | |
1644 | } | |
1645 | ||
1646 | max_reg = (u32)-1; | |
1647 | for_each_child_of_node(np, child) { | |
1648 | ret = of_property_read_u32(child, "reg", ®); | |
1649 | if (ret) | |
1650 | continue; | |
1651 | if (max_reg == (u32)-1 || reg > max_reg) | |
1652 | max_reg = reg; | |
1653 | } | |
1654 | nchans = max_reg == (u32)-1 ? 0 : max_reg + 1; | |
1655 | if (nchans == 0) { | |
1656 | dev_err(dev, "No channels\n"); | |
1657 | return -EINVAL; | |
1658 | } | |
1659 | ||
9697a559 | 1660 | size = offsetof(struct unittest_i2c_mux_data, adap[nchans]); |
d5e75500 PA |
1661 | stm = devm_kzalloc(dev, size, GFP_KERNEL); |
1662 | if (!stm) { | |
1663 | dev_err(dev, "Out of memory\n"); | |
1664 | return -ENOMEM; | |
1665 | } | |
1666 | stm->nchans = nchans; | |
1667 | for (i = 0; i < nchans; i++) { | |
1668 | stm->adap[i] = i2c_add_mux_adapter(adap, dev, client, | |
9697a559 | 1669 | 0, i, 0, unittest_i2c_mux_select_chan, NULL); |
d5e75500 PA |
1670 | if (!stm->adap[i]) { |
1671 | dev_err(dev, "Failed to register mux #%d\n", i); | |
1672 | for (i--; i >= 0; i--) | |
1673 | i2c_del_mux_adapter(stm->adap[i]); | |
1674 | return -ENODEV; | |
1675 | } | |
1676 | } | |
1677 | ||
1678 | i2c_set_clientdata(client, stm); | |
1679 | ||
1680 | return 0; | |
1681 | }; | |
1682 | ||
9697a559 | 1683 | static int unittest_i2c_mux_remove(struct i2c_client *client) |
d5e75500 PA |
1684 | { |
1685 | struct device *dev = &client->dev; | |
1686 | struct device_node *np = client->dev.of_node; | |
9697a559 | 1687 | struct unittest_i2c_mux_data *stm = i2c_get_clientdata(client); |
d5e75500 PA |
1688 | int i; |
1689 | ||
1690 | dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name); | |
1691 | for (i = stm->nchans - 1; i >= 0; i--) | |
1692 | i2c_del_mux_adapter(stm->adap[i]); | |
1693 | return 0; | |
1694 | } | |
1695 | ||
9697a559 WL |
1696 | static const struct i2c_device_id unittest_i2c_mux_id[] = { |
1697 | { .name = "unittest-i2c-mux" }, | |
d5e75500 PA |
1698 | { } |
1699 | }; | |
1700 | ||
9697a559 | 1701 | static struct i2c_driver unittest_i2c_mux_driver = { |
d5e75500 | 1702 | .driver = { |
9697a559 | 1703 | .name = "unittest-i2c-mux", |
d5e75500 PA |
1704 | .owner = THIS_MODULE, |
1705 | }, | |
9697a559 WL |
1706 | .probe = unittest_i2c_mux_probe, |
1707 | .remove = unittest_i2c_mux_remove, | |
1708 | .id_table = unittest_i2c_mux_id, | |
d5e75500 PA |
1709 | }; |
1710 | ||
1711 | #endif | |
1712 | ||
9697a559 | 1713 | static int of_unittest_overlay_i2c_init(void) |
d5e75500 PA |
1714 | { |
1715 | int ret; | |
1716 | ||
9697a559 WL |
1717 | ret = i2c_add_driver(&unittest_i2c_dev_driver); |
1718 | if (unittest(ret == 0, | |
1719 | "could not register unittest i2c device driver\n")) | |
d5e75500 PA |
1720 | return ret; |
1721 | ||
9697a559 WL |
1722 | ret = platform_driver_register(&unittest_i2c_bus_driver); |
1723 | if (unittest(ret == 0, | |
1724 | "could not register unittest i2c bus driver\n")) | |
d5e75500 PA |
1725 | return ret; |
1726 | ||
4252de39 | 1727 | #if IS_BUILTIN(CONFIG_I2C_MUX) |
9697a559 WL |
1728 | ret = i2c_add_driver(&unittest_i2c_mux_driver); |
1729 | if (unittest(ret == 0, | |
1730 | "could not register unittest i2c mux driver\n")) | |
d5e75500 PA |
1731 | return ret; |
1732 | #endif | |
1733 | ||
1734 | return 0; | |
1735 | } | |
1736 | ||
9697a559 | 1737 | static void of_unittest_overlay_i2c_cleanup(void) |
d5e75500 | 1738 | { |
4252de39 | 1739 | #if IS_BUILTIN(CONFIG_I2C_MUX) |
9697a559 | 1740 | i2c_del_driver(&unittest_i2c_mux_driver); |
d5e75500 | 1741 | #endif |
9697a559 WL |
1742 | platform_driver_unregister(&unittest_i2c_bus_driver); |
1743 | i2c_del_driver(&unittest_i2c_dev_driver); | |
d5e75500 PA |
1744 | } |
1745 | ||
9697a559 | 1746 | static void of_unittest_overlay_i2c_12(void) |
d5e75500 PA |
1747 | { |
1748 | int ret; | |
1749 | ||
1750 | /* device should enable */ | |
9697a559 | 1751 | ret = of_unittest_apply_overlay_check(12, 12, 0, 1, I2C_OVERLAY); |
d5e75500 PA |
1752 | if (ret != 0) |
1753 | return; | |
1754 | ||
9697a559 | 1755 | unittest(1, "overlay test %d passed\n", 12); |
d5e75500 PA |
1756 | } |
1757 | ||
1758 | /* test deactivation of device */ | |
9697a559 | 1759 | static void of_unittest_overlay_i2c_13(void) |
d5e75500 PA |
1760 | { |
1761 | int ret; | |
1762 | ||
1763 | /* device should disable */ | |
9697a559 | 1764 | ret = of_unittest_apply_overlay_check(13, 13, 1, 0, I2C_OVERLAY); |
d5e75500 | 1765 | if (ret != 0) |
6b1271de | 1766 | return; |
d5e75500 | 1767 | |
9697a559 | 1768 | unittest(1, "overlay test %d passed\n", 13); |
d5e75500 PA |
1769 | } |
1770 | ||
1771 | /* just check for i2c mux existence */ | |
9697a559 | 1772 | static void of_unittest_overlay_i2c_14(void) |
d5e75500 | 1773 | { |
6b1271de PA |
1774 | } |
1775 | ||
9697a559 | 1776 | static void of_unittest_overlay_i2c_15(void) |
d5e75500 PA |
1777 | { |
1778 | int ret; | |
1779 | ||
1780 | /* device should enable */ | |
9697a559 | 1781 | ret = of_unittest_apply_overlay_check(16, 15, 0, 1, I2C_OVERLAY); |
d5e75500 PA |
1782 | if (ret != 0) |
1783 | return; | |
1784 | ||
9697a559 | 1785 | unittest(1, "overlay test %d passed\n", 15); |
d5e75500 PA |
1786 | } |
1787 | ||
1788 | #else | |
1789 | ||
9697a559 WL |
1790 | static inline void of_unittest_overlay_i2c_14(void) { } |
1791 | static inline void of_unittest_overlay_i2c_15(void) { } | |
d5e75500 PA |
1792 | |
1793 | #endif | |
1794 | ||
9697a559 | 1795 | static void __init of_unittest_overlay(void) |
177d271c PA |
1796 | { |
1797 | struct device_node *bus_np = NULL; | |
1798 | int ret; | |
1799 | ||
9697a559 | 1800 | ret = platform_driver_register(&unittest_driver); |
177d271c | 1801 | if (ret != 0) { |
9697a559 | 1802 | unittest(0, "could not register unittest driver\n"); |
177d271c PA |
1803 | goto out; |
1804 | } | |
1805 | ||
1806 | bus_np = of_find_node_by_path(bus_path); | |
1807 | if (bus_np == NULL) { | |
9697a559 | 1808 | unittest(0, "could not find bus_path \"%s\"\n", bus_path); |
177d271c PA |
1809 | goto out; |
1810 | } | |
1811 | ||
1812 | ret = of_platform_populate(bus_np, of_default_bus_match_table, | |
1813 | NULL, NULL); | |
1814 | if (ret != 0) { | |
9697a559 | 1815 | unittest(0, "could not populate bus @ \"%s\"\n", bus_path); |
177d271c PA |
1816 | goto out; |
1817 | } | |
1818 | ||
9697a559 WL |
1819 | if (!of_unittest_device_exists(100, PDEV_OVERLAY)) { |
1820 | unittest(0, "could not find unittest0 @ \"%s\"\n", | |
1821 | unittest_path(100, PDEV_OVERLAY)); | |
177d271c PA |
1822 | goto out; |
1823 | } | |
1824 | ||
9697a559 WL |
1825 | if (of_unittest_device_exists(101, PDEV_OVERLAY)) { |
1826 | unittest(0, "unittest1 @ \"%s\" should not exist\n", | |
1827 | unittest_path(101, PDEV_OVERLAY)); | |
177d271c PA |
1828 | goto out; |
1829 | } | |
1830 | ||
9697a559 | 1831 | unittest(1, "basic infrastructure of overlays passed"); |
177d271c PA |
1832 | |
1833 | /* tests in sequence */ | |
9697a559 WL |
1834 | of_unittest_overlay_0(); |
1835 | of_unittest_overlay_1(); | |
1836 | of_unittest_overlay_2(); | |
1837 | of_unittest_overlay_3(); | |
1838 | of_unittest_overlay_4(); | |
1839 | of_unittest_overlay_5(); | |
1840 | of_unittest_overlay_6(); | |
1841 | of_unittest_overlay_8(); | |
1842 | ||
1843 | of_unittest_overlay_10(); | |
1844 | of_unittest_overlay_11(); | |
6b1271de | 1845 | |
4252de39 | 1846 | #if IS_BUILTIN(CONFIG_I2C) |
9697a559 | 1847 | if (unittest(of_unittest_overlay_i2c_init() == 0, "i2c init failed\n")) |
d5e75500 PA |
1848 | goto out; |
1849 | ||
9697a559 WL |
1850 | of_unittest_overlay_i2c_12(); |
1851 | of_unittest_overlay_i2c_13(); | |
1852 | of_unittest_overlay_i2c_14(); | |
1853 | of_unittest_overlay_i2c_15(); | |
d5e75500 | 1854 | |
9697a559 | 1855 | of_unittest_overlay_i2c_cleanup(); |
d5e75500 PA |
1856 | #endif |
1857 | ||
177d271c PA |
1858 | out: |
1859 | of_node_put(bus_np); | |
1860 | } | |
1861 | ||
1862 | #else | |
9697a559 | 1863 | static inline void __init of_unittest_overlay(void) { } |
177d271c PA |
1864 | #endif |
1865 | ||
9697a559 | 1866 | static int __init of_unittest(void) |
53a42093 GL |
1867 | { |
1868 | struct device_node *np; | |
ae9304c9 GM |
1869 | int res; |
1870 | ||
9697a559 WL |
1871 | /* adding data for unittest */ |
1872 | res = unittest_data_add(); | |
ae9304c9 GM |
1873 | if (res) |
1874 | return res; | |
788ec2fc GL |
1875 | if (!of_aliases) |
1876 | of_aliases = of_find_node_by_path("/aliases"); | |
53a42093 GL |
1877 | |
1878 | np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); | |
1879 | if (!np) { | |
1880 | pr_info("No testcase data in device tree; not running tests\n"); | |
1881 | return 0; | |
1882 | } | |
1883 | of_node_put(np); | |
1884 | ||
9697a559 WL |
1885 | pr_info("start of unittest - you will see error messages\n"); |
1886 | of_unittest_check_tree_linkage(); | |
1887 | of_unittest_check_phandles(); | |
1888 | of_unittest_find_node_by_name(); | |
1889 | of_unittest_dynamic(); | |
1890 | of_unittest_parse_phandle_with_args(); | |
1891 | of_unittest_property_string(); | |
1892 | of_unittest_property_copy(); | |
1893 | of_unittest_changeset(); | |
1894 | of_unittest_parse_interrupts(); | |
1895 | of_unittest_parse_interrupts_extended(); | |
1896 | of_unittest_match_node(); | |
1897 | of_unittest_platform_populate(); | |
1898 | of_unittest_overlay(); | |
ae9304c9 | 1899 | |
f2051d6a | 1900 | /* Double check linkage after removing testcase data */ |
9697a559 | 1901 | of_unittest_check_tree_linkage(); |
f2051d6a | 1902 | |
9697a559 WL |
1903 | pr_info("end of unittest - %i passed, %i failed\n", |
1904 | unittest_results.passed, unittest_results.failed); | |
f2051d6a | 1905 | |
53a42093 GL |
1906 | return 0; |
1907 | } | |
9697a559 | 1908 | late_initcall(of_unittest); |