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Commit | Line | Data |
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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 | ||
a9f10ca7 GL |
28 | static struct selftest_results { |
29 | int passed; | |
30 | int failed; | |
31 | } selftest_results; | |
32 | ||
851da976 GL |
33 | #define selftest(result, fmt, ...) ({ \ |
34 | bool failed = !(result); \ | |
35 | if (failed) { \ | |
a9f10ca7 GL |
36 | selftest_results.failed++; \ |
37 | pr_err("FAIL %s():%i " fmt, __func__, __LINE__, ##__VA_ARGS__); \ | |
cabb7d5b | 38 | } else { \ |
a9f10ca7 GL |
39 | selftest_results.passed++; \ |
40 | pr_debug("pass %s():%i\n", __func__, __LINE__); \ | |
cabb7d5b | 41 | } \ |
851da976 GL |
42 | failed; \ |
43 | }) | |
53a42093 | 44 | |
ae91ff72 GL |
45 | static void __init of_selftest_find_node_by_name(void) |
46 | { | |
47 | struct device_node *np; | |
75c28c09 | 48 | const char *options; |
ae91ff72 GL |
49 | |
50 | np = of_find_node_by_path("/testcase-data"); | |
51 | selftest(np && !strcmp("/testcase-data", np->full_name), | |
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/"); | |
57 | selftest(!np, "trailing '/' on /testcase-data/ should fail\n"); | |
58 | ||
59 | np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); | |
60 | selftest(np && !strcmp("/testcase-data/phandle-tests/consumer-a", np->full_name), | |
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"); | |
65 | selftest(np && !strcmp("/testcase-data", np->full_name), | |
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/"); | |
71 | selftest(!np, "trailing '/' on testcase-alias/ should fail\n"); | |
72 | ||
73 | np = of_find_node_by_path("testcase-alias/phandle-tests/consumer-a"); | |
74 | selftest(np && !strcmp("/testcase-data/phandle-tests/consumer-a", np->full_name), | |
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"); | |
79 | selftest(!np, "non-existent path returned node %s\n", np->full_name); | |
80 | of_node_put(np); | |
81 | ||
82 | np = of_find_node_by_path("missing-alias"); | |
83 | selftest(!np, "non-existent alias returned node %s\n", np->full_name); | |
84 | of_node_put(np); | |
85 | ||
86 | np = of_find_node_by_path("testcase-alias/missing-path"); | |
87 | selftest(!np, "non-existent alias with relative path returned node %s\n", np->full_name); | |
88 | of_node_put(np); | |
75c28c09 LL |
89 | |
90 | np = of_find_node_opts_by_path("/testcase-data:testoption", &options); | |
91 | selftest(np && !strcmp("testoption", options), | |
92 | "option path test failed\n"); | |
93 | of_node_put(np); | |
94 | ||
8cbba1ab PH |
95 | np = of_find_node_opts_by_path("/testcase-data:test/option", &options); |
96 | selftest(np && !strcmp("test/option", options), | |
97 | "option path test, subcase #1 failed\n"); | |
98 | of_node_put(np); | |
99 | ||
5ca1b0dd BN |
100 | np = of_find_node_opts_by_path("/testcase-data/testcase-device1:test/option", &options); |
101 | selftest(np && !strcmp("test/option", options), | |
102 | "option path test, subcase #2 failed\n"); | |
103 | of_node_put(np); | |
104 | ||
75c28c09 LL |
105 | np = of_find_node_opts_by_path("/testcase-data:testoption", NULL); |
106 | selftest(np, "NULL option path test failed\n"); | |
107 | of_node_put(np); | |
108 | ||
109 | np = of_find_node_opts_by_path("testcase-alias:testaliasoption", | |
110 | &options); | |
111 | selftest(np && !strcmp("testaliasoption", options), | |
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); | |
117 | selftest(np && !strcmp("test/alias/option", options), | |
118 | "option alias path test, subcase #1 failed\n"); | |
119 | of_node_put(np); | |
120 | ||
75c28c09 LL |
121 | np = of_find_node_opts_by_path("testcase-alias:testaliasoption", NULL); |
122 | selftest(np, "NULL option alias path test failed\n"); | |
123 | of_node_put(np); | |
124 | ||
125 | options = "testoption"; | |
126 | np = of_find_node_opts_by_path("testcase-alias", &options); | |
127 | selftest(np && !options, "option clearing test failed\n"); | |
128 | of_node_put(np); | |
129 | ||
130 | options = "testoption"; | |
131 | np = of_find_node_opts_by_path("/", &options); | |
132 | selftest(np && !options, "option clearing root node test failed\n"); | |
133 | of_node_put(np); | |
ae91ff72 GL |
134 | } |
135 | ||
7e66c5c7 GL |
136 | static void __init of_selftest_dynamic(void) |
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) { | |
150 | selftest(0, "kzalloc() failed\n"); | |
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); | |
158 | selftest(of_add_property(np, prop) == 0, "Adding a new property failed\n"); | |
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); | |
165 | selftest(of_add_property(np, prop) != 0, | |
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); | |
171 | selftest(of_update_property(np, prop) == 0, | |
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); | |
179 | selftest(of_update_property(np, prop) == 0, | |
180 | "Updating a missing property should have passed\n"); | |
181 | ||
182 | /* Remove property - should pass */ | |
183 | selftest(of_remove_property(np, prop) == 0, | |
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); | |
191 | selftest(prop->value != NULL, "Unable to allocate large buffer\n"); | |
192 | if (prop->value) | |
193 | selftest(of_add_property(np, prop) == 0, | |
194 | "Adding a large property should have passed\n"); | |
195 | } | |
196 | ||
f2051d6a GL |
197 | static int __init of_selftest_check_node_linkage(struct device_node *np) |
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 | ||
f2051d6a GL |
209 | rc = of_selftest_check_node_linkage(child); |
210 | if (rc < 0) | |
211 | return rc; | |
212 | count += rc; | |
213 | } | |
214 | ||
215 | return count + 1; | |
216 | } | |
217 | ||
218 | static void __init of_selftest_check_tree_linkage(void) | |
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++; | |
5063e25a | 228 | child_count = of_selftest_check_node_linkage(of_root); |
f2051d6a GL |
229 | |
230 | selftest(child_count > 0, "Device node data structure is corrupted\n"); | |
a6bb121e FR |
231 | selftest(child_count == allnode_count, |
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); |
841ec213 GL |
243 | static void __init of_selftest_check_phandles(void) |
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 | } | |
271 | selftest(dup_count == 0, "Found %i duplicates in %i phandles\n", | |
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 | ||
53a42093 GL |
281 | static void __init of_selftest_parse_phandle_with_args(void) |
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 GL |
293 | rc = of_count_phandle_with_args(np, "phandle-list", "#phandle-cells"); |
294 | selftest(rc == 7, "of_count_phandle_with_args() returned %i, expected 7\n", rc); | |
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 | ||
cabb7d5b GL |
347 | selftest(passed, "index %i - data error on node %s rc=%i\n", |
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); | |
cabb7d5b | 354 | selftest(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"); | |
357 | selftest(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); | |
cabb7d5b | 362 | selftest(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"); | |
365 | selftest(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); | |
cabb7d5b | 370 | selftest(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"); | |
373 | selftest(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); | |
cabb7d5b | 378 | selftest(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"); | |
381 | selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); | |
53a42093 GL |
382 | } |
383 | ||
a87fa1d8 | 384 | static void __init of_selftest_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"); | |
397 | selftest(rc == 0, "first expected:0 got:%i\n", rc); | |
398 | rc = of_property_match_string(np, "phandle-list-names", "second"); | |
649022e0 | 399 | selftest(rc == 1, "second expected:1 got:%i\n", rc); |
7aff0fe3 | 400 | rc = of_property_match_string(np, "phandle-list-names", "third"); |
649022e0 | 401 | selftest(rc == 2, "third expected:2 got:%i\n", rc); |
7aff0fe3 | 402 | rc = of_property_match_string(np, "phandle-list-names", "fourth"); |
a87fa1d8 | 403 | selftest(rc == -ENODATA, "unmatched string; rc=%i\n", rc); |
7aff0fe3 | 404 | rc = of_property_match_string(np, "missing-property", "blah"); |
a87fa1d8 | 405 | selftest(rc == -EINVAL, "missing property; rc=%i\n", rc); |
7aff0fe3 | 406 | rc = of_property_match_string(np, "empty-property", "blah"); |
a87fa1d8 | 407 | selftest(rc == -ENODATA, "empty property; rc=%i\n", rc); |
7aff0fe3 | 408 | rc = of_property_match_string(np, "unterminated-string", "blah"); |
a87fa1d8 GL |
409 | selftest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc); |
410 | ||
411 | /* of_property_count_strings() tests */ | |
412 | rc = of_property_count_strings(np, "string-property"); | |
413 | selftest(rc == 1, "Incorrect string count; rc=%i\n", rc); | |
414 | rc = of_property_count_strings(np, "phandle-list-names"); | |
415 | selftest(rc == 3, "Incorrect string count; rc=%i\n", rc); | |
416 | rc = of_property_count_strings(np, "unterminated-string"); | |
417 | selftest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc); | |
418 | rc = of_property_count_strings(np, "unterminated-string-list"); | |
419 | selftest(rc == -EILSEQ, "unterminated string array; rc=%i\n", rc); | |
420 | ||
421 | /* of_property_read_string_index() tests */ | |
422 | rc = of_property_read_string_index(np, "string-property", 0, strings); | |
423 | selftest(rc == 0 && !strcmp(strings[0], "foobar"), "of_property_read_string_index() failure; rc=%i\n", rc); | |
424 | strings[0] = NULL; | |
425 | rc = of_property_read_string_index(np, "string-property", 1, strings); | |
426 | selftest(rc == -ENODATA && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc); | |
427 | rc = of_property_read_string_index(np, "phandle-list-names", 0, strings); | |
428 | selftest(rc == 0 && !strcmp(strings[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc); | |
429 | rc = of_property_read_string_index(np, "phandle-list-names", 1, strings); | |
430 | selftest(rc == 0 && !strcmp(strings[0], "second"), "of_property_read_string_index() failure; rc=%i\n", rc); | |
431 | rc = of_property_read_string_index(np, "phandle-list-names", 2, strings); | |
432 | selftest(rc == 0 && !strcmp(strings[0], "third"), "of_property_read_string_index() failure; rc=%i\n", rc); | |
433 | strings[0] = NULL; | |
434 | rc = of_property_read_string_index(np, "phandle-list-names", 3, strings); | |
435 | selftest(rc == -ENODATA && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc); | |
436 | strings[0] = NULL; | |
437 | rc = of_property_read_string_index(np, "unterminated-string", 0, strings); | |
438 | selftest(rc == -EILSEQ && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc); | |
439 | rc = of_property_read_string_index(np, "unterminated-string-list", 0, strings); | |
440 | selftest(rc == 0 && !strcmp(strings[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc); | |
441 | strings[0] = NULL; | |
442 | rc = of_property_read_string_index(np, "unterminated-string-list", 2, strings); /* should fail */ | |
443 | selftest(rc == -EILSEQ && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc); | |
444 | strings[1] = NULL; | |
445 | ||
446 | /* of_property_read_string_array() tests */ | |
447 | rc = of_property_read_string_array(np, "string-property", strings, 4); | |
448 | selftest(rc == 1, "Incorrect string count; rc=%i\n", rc); | |
449 | rc = of_property_read_string_array(np, "phandle-list-names", strings, 4); | |
450 | selftest(rc == 3, "Incorrect string count; rc=%i\n", rc); | |
451 | rc = of_property_read_string_array(np, "unterminated-string", strings, 4); | |
452 | selftest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc); | |
453 | /* -- An incorrectly formed string should cause a failure */ | |
454 | rc = of_property_read_string_array(np, "unterminated-string-list", strings, 4); | |
455 | selftest(rc == -EILSEQ, "unterminated string array; rc=%i\n", rc); | |
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); | |
459 | selftest(rc == 2 && strings[2] == NULL, "of_property_read_string_array() failure; rc=%i\n", rc); | |
460 | strings[1] = NULL; | |
461 | rc = of_property_read_string_array(np, "phandle-list-names", strings, 1); | |
462 | selftest(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)) | |
469 | static void __init of_selftest_property_copy(void) | |
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); | |
477 | selftest(new && propcmp(&p1, new), "empty property didn't copy correctly\n"); | |
478 | kfree(new->value); | |
479 | kfree(new->name); | |
480 | kfree(new); | |
481 | ||
482 | new = __of_prop_dup(&p2, GFP_KERNEL); | |
483 | selftest(new && propcmp(&p2, new), "non-empty property didn't copy correctly\n"); | |
484 | kfree(new->value); | |
485 | kfree(new->name); | |
486 | kfree(new); | |
487 | #endif | |
488 | } | |
489 | ||
201c910b PA |
490 | static void __init of_selftest_changeset(void) |
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"); |
201c910b | 500 | selftest(n1, "testcase setup failure\n"); |
e5179581 | 501 | n2 = __of_node_dup(NULL, "/testcase-data/changeset/n2"); |
201c910b | 502 | selftest(n2, "testcase setup failure\n"); |
e5179581 | 503 | n21 = __of_node_dup(NULL, "%s/%s", "/testcase-data/changeset/n2", "n21"); |
201c910b PA |
504 | selftest(n21, "testcase setup failure %p\n", n21); |
505 | nremove = of_find_node_by_path("/testcase-data/changeset/node-remove"); | |
506 | selftest(nremove, "testcase setup failure\n"); | |
507 | ppadd = __of_prop_dup(&padd, GFP_KERNEL); | |
508 | selftest(ppadd, "testcase setup failure\n"); | |
509 | ppupdate = __of_prop_dup(&pupdate, GFP_KERNEL); | |
510 | selftest(ppupdate, "testcase setup failure\n"); | |
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); | |
517 | selftest(ppremove, "failed to find removal prop"); | |
518 | ||
519 | of_changeset_init(&chgset); | |
520 | selftest(!of_changeset_attach_node(&chgset, n1), "fail attach n1\n"); | |
521 | selftest(!of_changeset_attach_node(&chgset, n2), "fail attach n2\n"); | |
522 | selftest(!of_changeset_detach_node(&chgset, nremove), "fail remove node\n"); | |
523 | selftest(!of_changeset_attach_node(&chgset, n21), "fail attach n21\n"); | |
524 | selftest(!of_changeset_add_property(&chgset, parent, ppadd), "fail add prop\n"); | |
525 | selftest(!of_changeset_update_property(&chgset, parent, ppupdate), "fail update prop\n"); | |
526 | selftest(!of_changeset_remove_property(&chgset, parent, ppremove), "fail remove prop\n"); | |
527 | mutex_lock(&of_mutex); | |
528 | selftest(!of_changeset_apply(&chgset), "apply failed\n"); | |
529 | mutex_unlock(&of_mutex); | |
530 | ||
e5179581 GL |
531 | /* Make sure node names are constructed correctly */ |
532 | selftest((np = of_find_node_by_path("/testcase-data/changeset/n2/n21")), | |
533 | "'%s' not added\n", n21->full_name); | |
c46ca3c8 | 534 | of_node_put(np); |
e5179581 | 535 | |
201c910b PA |
536 | mutex_lock(&of_mutex); |
537 | selftest(!of_changeset_revert(&chgset), "revert failed\n"); | |
538 | mutex_unlock(&of_mutex); | |
539 | ||
540 | of_changeset_destroy(&chgset); | |
541 | #endif | |
542 | } | |
543 | ||
a9f10ca7 GL |
544 | static void __init of_selftest_parse_interrupts(void) |
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 | ||
566 | selftest(passed, "index %i - data error on node %s rc=%i\n", | |
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 | } | |
612 | selftest(passed, "index %i - data error on node %s rc=%i\n", | |
613 | i, args.np->full_name, rc); | |
614 | } | |
615 | of_node_put(np); | |
616 | } | |
617 | ||
79d97015 GL |
618 | static void __init of_selftest_parse_interrupts_extended(void) |
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 | ||
682 | selftest(passed, "index %i - data error on node %s rc=%i\n", | |
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 | ||
723 | static void __init of_selftest_match_node(void) | |
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) { | |
732 | selftest(0, "missing testcase node %s\n", | |
733 | match_node_tests[i].path); | |
734 | continue; | |
735 | } | |
736 | ||
737 | match = of_match_node(match_node_table, np); | |
738 | if (!match) { | |
739 | selftest(0, "%s didn't match anything\n", | |
740 | match_node_tests[i].path); | |
741 | continue; | |
742 | } | |
743 | ||
744 | if (strcmp(match->data, match_node_tests[i].data) != 0) { | |
745 | selftest(0, "%s got wrong match. expected %s, got %s\n", | |
746 | match_node_tests[i].path, match_node_tests[i].data, | |
747 | (const char *)match->data); | |
748 | continue; | |
749 | } | |
750 | selftest(1, "passed"); | |
751 | } | |
752 | } | |
753 | ||
851da976 GL |
754 | struct device test_bus = { |
755 | .init_name = "unittest-bus", | |
756 | }; | |
82c0f589 RH |
757 | static void __init of_selftest_platform_populate(void) |
758 | { | |
851da976 GL |
759 | int irq, rc; |
760 | struct device_node *np, *child, *grandchild; | |
82c0f589 | 761 | struct platform_device *pdev; |
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); | |
7d1cdc89 RH |
773 | selftest(pdev, "device 1 creation failed\n"); |
774 | ||
82c0f589 | 775 | irq = platform_get_irq(pdev, 0); |
7d1cdc89 | 776 | selftest(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); | |
7d1cdc89 | 781 | selftest(pdev, "device 2 creation failed\n"); |
82c0f589 | 782 | irq = platform_get_irq(pdev, 0); |
7d1cdc89 | 783 | selftest(irq < 0 && irq != -EPROBE_DEFER, "device parsing error failed - %d\n", irq); |
82c0f589 | 784 | |
851da976 GL |
785 | if (selftest(np = of_find_node_by_path("/testcase-data/platform-tests"), |
786 | "No testcase data in device tree\n")); | |
787 | return; | |
788 | ||
789 | if (selftest(!(rc = device_register(&test_bus)), | |
790 | "testbus registration failed; rc=%i\n", rc)); | |
fb2caa50 | 791 | return; |
fb2caa50 RH |
792 | |
793 | for_each_child_of_node(np, child) { | |
851da976 | 794 | of_platform_populate(child, match, NULL, &test_bus); |
fb2caa50 RH |
795 | for_each_child_of_node(child, grandchild) |
796 | selftest(of_find_device_by_node(grandchild), | |
797 | "Could not create device for node '%s'\n", | |
798 | grandchild->name); | |
799 | } | |
851da976 GL |
800 | |
801 | of_platform_depopulate(&test_bus); | |
802 | for_each_child_of_node(np, child) { | |
803 | for_each_child_of_node(child, grandchild) | |
804 | selftest(!of_find_device_by_node(grandchild), | |
805 | "device didn't get destroyed '%s'\n", | |
806 | grandchild->name); | |
807 | } | |
808 | ||
809 | device_unregister(&test_bus); | |
810 | of_node_put(np); | |
82c0f589 RH |
811 | } |
812 | ||
ae9304c9 GM |
813 | /** |
814 | * update_node_properties - adds the properties | |
815 | * of np into dup node (present in live tree) and | |
816 | * updates parent of children of np to dup. | |
817 | * | |
818 | * @np: node already present in live tree | |
819 | * @dup: node present in live tree to be updated | |
820 | */ | |
821 | static void update_node_properties(struct device_node *np, | |
822 | struct device_node *dup) | |
823 | { | |
824 | struct property *prop; | |
825 | struct device_node *child; | |
826 | ||
827 | for_each_property_of_node(np, prop) | |
828 | of_add_property(dup, prop); | |
829 | ||
830 | for_each_child_of_node(np, child) | |
831 | child->parent = dup; | |
832 | } | |
833 | ||
834 | /** | |
835 | * attach_node_and_children - attaches nodes | |
836 | * and its children to live tree | |
837 | * | |
838 | * @np: Node to attach to live tree | |
839 | */ | |
840 | static int attach_node_and_children(struct device_node *np) | |
841 | { | |
5063e25a | 842 | struct device_node *next, *dup, *child; |
3ce04b4a | 843 | unsigned long flags; |
ae9304c9 | 844 | |
5063e25a GL |
845 | dup = of_find_node_by_path(np->full_name); |
846 | if (dup) { | |
847 | update_node_properties(np, dup); | |
848 | return 0; | |
849 | } | |
ae9304c9 | 850 | |
5063e25a GL |
851 | child = np->child; |
852 | np->child = NULL; | |
3ce04b4a GM |
853 | |
854 | mutex_lock(&of_mutex); | |
855 | raw_spin_lock_irqsave(&devtree_lock, flags); | |
856 | np->sibling = np->parent->child; | |
857 | np->parent->child = np; | |
858 | of_node_clear_flag(np, OF_DETACHED); | |
859 | raw_spin_unlock_irqrestore(&devtree_lock, flags); | |
860 | ||
861 | __of_attach_node_sysfs(np); | |
862 | mutex_unlock(&of_mutex); | |
863 | ||
5063e25a GL |
864 | while (child) { |
865 | next = child->sibling; | |
866 | attach_node_and_children(child); | |
867 | child = next; | |
ae9304c9 GM |
868 | } |
869 | ||
870 | return 0; | |
871 | } | |
872 | ||
873 | /** | |
874 | * selftest_data_add - Reads, copies data from | |
875 | * linked tree and attaches it to the live tree | |
876 | */ | |
877 | static int __init selftest_data_add(void) | |
878 | { | |
879 | void *selftest_data; | |
b951f9dc | 880 | struct device_node *selftest_data_node, *np; |
ae9304c9 GM |
881 | extern uint8_t __dtb_testcases_begin[]; |
882 | extern uint8_t __dtb_testcases_end[]; | |
883 | const int size = __dtb_testcases_end - __dtb_testcases_begin; | |
2eb46da2 | 884 | int rc; |
ae9304c9 | 885 | |
b951f9dc | 886 | if (!size) { |
ae9304c9 GM |
887 | pr_warn("%s: No testcase data to attach; not running tests\n", |
888 | __func__); | |
889 | return -ENODATA; | |
890 | } | |
891 | ||
892 | /* creating copy */ | |
893 | selftest_data = kmemdup(__dtb_testcases_begin, size, GFP_KERNEL); | |
894 | ||
895 | if (!selftest_data) { | |
896 | pr_warn("%s: Failed to allocate memory for selftest_data; " | |
897 | "not running tests\n", __func__); | |
898 | return -ENOMEM; | |
899 | } | |
900 | of_fdt_unflatten_tree(selftest_data, &selftest_data_node); | |
b951f9dc GM |
901 | if (!selftest_data_node) { |
902 | pr_warn("%s: No tree to attach; not running tests\n", __func__); | |
903 | return -ENODATA; | |
904 | } | |
2eb46da2 GL |
905 | of_node_set_flag(selftest_data_node, OF_DETACHED); |
906 | rc = of_resolve_phandles(selftest_data_node); | |
907 | if (rc) { | |
908 | pr_err("%s: Failed to resolve phandles (rc=%i)\n", __func__, rc); | |
909 | return -EINVAL; | |
910 | } | |
b951f9dc | 911 | |
5063e25a | 912 | if (!of_root) { |
5063e25a | 913 | of_root = selftest_data_node; |
b951f9dc GM |
914 | for_each_of_allnodes(np) |
915 | __of_attach_node_sysfs(np); | |
916 | of_aliases = of_find_node_by_path("/aliases"); | |
917 | of_chosen = of_find_node_by_path("/chosen"); | |
918 | return 0; | |
919 | } | |
ae9304c9 GM |
920 | |
921 | /* attach the sub-tree to live tree */ | |
5063e25a GL |
922 | np = selftest_data_node->child; |
923 | while (np) { | |
924 | struct device_node *next = np->sibling; | |
3db316d0 | 925 | |
5063e25a GL |
926 | np->parent = of_root; |
927 | attach_node_and_children(np); | |
928 | np = next; | |
929 | } | |
930 | return 0; | |
ae9304c9 GM |
931 | } |
932 | ||
177d271c PA |
933 | #ifdef CONFIG_OF_OVERLAY |
934 | ||
935 | static int selftest_probe(struct platform_device *pdev) | |
936 | { | |
937 | struct device *dev = &pdev->dev; | |
938 | struct device_node *np = dev->of_node; | |
939 | ||
940 | if (np == NULL) { | |
941 | dev_err(dev, "No OF data for device\n"); | |
942 | return -EINVAL; | |
943 | ||
944 | } | |
945 | ||
946 | dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name); | |
6b1271de PA |
947 | |
948 | of_platform_populate(np, NULL, NULL, &pdev->dev); | |
949 | ||
177d271c PA |
950 | return 0; |
951 | } | |
952 | ||
953 | static int selftest_remove(struct platform_device *pdev) | |
954 | { | |
955 | struct device *dev = &pdev->dev; | |
956 | struct device_node *np = dev->of_node; | |
957 | ||
958 | dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name); | |
959 | return 0; | |
960 | } | |
961 | ||
afaed7a9 | 962 | static const struct of_device_id selftest_match[] = { |
177d271c PA |
963 | { .compatible = "selftest", }, |
964 | {}, | |
965 | }; | |
177d271c PA |
966 | |
967 | static struct platform_driver selftest_driver = { | |
968 | .probe = selftest_probe, | |
969 | .remove = selftest_remove, | |
970 | .driver = { | |
971 | .name = "selftest", | |
972 | .owner = THIS_MODULE, | |
973 | .of_match_table = of_match_ptr(selftest_match), | |
974 | }, | |
975 | }; | |
976 | ||
977 | /* get the platform device instantiated at the path */ | |
978 | static struct platform_device *of_path_to_platform_device(const char *path) | |
979 | { | |
980 | struct device_node *np; | |
981 | struct platform_device *pdev; | |
982 | ||
983 | np = of_find_node_by_path(path); | |
984 | if (np == NULL) | |
985 | return NULL; | |
986 | ||
987 | pdev = of_find_device_by_node(np); | |
988 | of_node_put(np); | |
989 | ||
990 | return pdev; | |
991 | } | |
992 | ||
993 | /* find out if a platform device exists at that path */ | |
994 | static int of_path_platform_device_exists(const char *path) | |
995 | { | |
996 | struct platform_device *pdev; | |
997 | ||
998 | pdev = of_path_to_platform_device(path); | |
999 | platform_device_put(pdev); | |
1000 | return pdev != NULL; | |
1001 | } | |
1002 | ||
4252de39 | 1003 | #if IS_BUILTIN(CONFIG_I2C) |
d5e75500 PA |
1004 | |
1005 | /* get the i2c client device instantiated at the path */ | |
1006 | static struct i2c_client *of_path_to_i2c_client(const char *path) | |
1007 | { | |
1008 | struct device_node *np; | |
1009 | struct i2c_client *client; | |
1010 | ||
1011 | np = of_find_node_by_path(path); | |
1012 | if (np == NULL) | |
1013 | return NULL; | |
1014 | ||
1015 | client = of_find_i2c_device_by_node(np); | |
1016 | of_node_put(np); | |
1017 | ||
1018 | return client; | |
1019 | } | |
1020 | ||
1021 | /* find out if a i2c client device exists at that path */ | |
1022 | static int of_path_i2c_client_exists(const char *path) | |
1023 | { | |
1024 | struct i2c_client *client; | |
1025 | ||
1026 | client = of_path_to_i2c_client(path); | |
1027 | if (client) | |
1028 | put_device(&client->dev); | |
1029 | return client != NULL; | |
1030 | } | |
1031 | #else | |
1032 | static int of_path_i2c_client_exists(const char *path) | |
1033 | { | |
1034 | return 0; | |
1035 | } | |
1036 | #endif | |
1037 | ||
1038 | enum overlay_type { | |
1039 | PDEV_OVERLAY, | |
1040 | I2C_OVERLAY | |
1041 | }; | |
1042 | ||
1043 | static int of_path_device_type_exists(const char *path, | |
1044 | enum overlay_type ovtype) | |
177d271c | 1045 | { |
d5e75500 PA |
1046 | switch (ovtype) { |
1047 | case PDEV_OVERLAY: | |
1048 | return of_path_platform_device_exists(path); | |
1049 | case I2C_OVERLAY: | |
1050 | return of_path_i2c_client_exists(path); | |
1051 | } | |
1052 | return 0; | |
1053 | } | |
1054 | ||
1055 | static const char *selftest_path(int nr, enum overlay_type ovtype) | |
1056 | { | |
1057 | const char *base; | |
177d271c PA |
1058 | static char buf[256]; |
1059 | ||
d5e75500 PA |
1060 | switch (ovtype) { |
1061 | case PDEV_OVERLAY: | |
1062 | base = "/testcase-data/overlay-node/test-bus"; | |
1063 | break; | |
1064 | case I2C_OVERLAY: | |
1065 | base = "/testcase-data/overlay-node/test-bus/i2c-test-bus"; | |
1066 | break; | |
1067 | default: | |
1068 | buf[0] = '\0'; | |
1069 | return buf; | |
1070 | } | |
1071 | snprintf(buf, sizeof(buf) - 1, "%s/test-selftest%d", base, nr); | |
177d271c | 1072 | buf[sizeof(buf) - 1] = '\0'; |
177d271c PA |
1073 | return buf; |
1074 | } | |
1075 | ||
d5e75500 PA |
1076 | static int of_selftest_device_exists(int selftest_nr, enum overlay_type ovtype) |
1077 | { | |
1078 | const char *path; | |
1079 | ||
1080 | path = selftest_path(selftest_nr, ovtype); | |
1081 | ||
1082 | switch (ovtype) { | |
1083 | case PDEV_OVERLAY: | |
1084 | return of_path_platform_device_exists(path); | |
1085 | case I2C_OVERLAY: | |
1086 | return of_path_i2c_client_exists(path); | |
1087 | } | |
1088 | return 0; | |
1089 | } | |
1090 | ||
177d271c PA |
1091 | static const char *overlay_path(int nr) |
1092 | { | |
1093 | static char buf[256]; | |
1094 | ||
1095 | snprintf(buf, sizeof(buf) - 1, | |
1096 | "/testcase-data/overlay%d", nr); | |
1097 | buf[sizeof(buf) - 1] = '\0'; | |
1098 | ||
1099 | return buf; | |
1100 | } | |
1101 | ||
1102 | static const char *bus_path = "/testcase-data/overlay-node/test-bus"; | |
1103 | ||
1104 | static int of_selftest_apply_overlay(int selftest_nr, int overlay_nr, | |
1105 | int *overlay_id) | |
1106 | { | |
1107 | struct device_node *np = NULL; | |
1108 | int ret, id = -1; | |
1109 | ||
1110 | np = of_find_node_by_path(overlay_path(overlay_nr)); | |
1111 | if (np == NULL) { | |
1112 | selftest(0, "could not find overlay node @\"%s\"\n", | |
1113 | overlay_path(overlay_nr)); | |
1114 | ret = -EINVAL; | |
1115 | goto out; | |
1116 | } | |
1117 | ||
1118 | ret = of_overlay_create(np); | |
1119 | if (ret < 0) { | |
1120 | selftest(0, "could not create overlay from \"%s\"\n", | |
1121 | overlay_path(overlay_nr)); | |
1122 | goto out; | |
1123 | } | |
1124 | id = ret; | |
1125 | ||
1126 | ret = 0; | |
1127 | ||
1128 | out: | |
1129 | of_node_put(np); | |
1130 | ||
1131 | if (overlay_id) | |
1132 | *overlay_id = id; | |
1133 | ||
1134 | return ret; | |
1135 | } | |
1136 | ||
1137 | /* apply an overlay while checking before and after states */ | |
1138 | static int of_selftest_apply_overlay_check(int overlay_nr, int selftest_nr, | |
d5e75500 | 1139 | int before, int after, enum overlay_type ovtype) |
177d271c PA |
1140 | { |
1141 | int ret; | |
1142 | ||
1143 | /* selftest device must not be in before state */ | |
d5e75500 | 1144 | if (of_selftest_device_exists(selftest_nr, ovtype) != before) { |
177d271c PA |
1145 | selftest(0, "overlay @\"%s\" with device @\"%s\" %s\n", |
1146 | overlay_path(overlay_nr), | |
d5e75500 | 1147 | selftest_path(selftest_nr, ovtype), |
177d271c PA |
1148 | !before ? "enabled" : "disabled"); |
1149 | return -EINVAL; | |
1150 | } | |
1151 | ||
1152 | ret = of_selftest_apply_overlay(overlay_nr, selftest_nr, NULL); | |
1153 | if (ret != 0) { | |
1154 | /* of_selftest_apply_overlay already called selftest() */ | |
1155 | return ret; | |
1156 | } | |
1157 | ||
1158 | /* selftest device must be to set to after state */ | |
d5e75500 | 1159 | if (of_selftest_device_exists(selftest_nr, ovtype) != after) { |
177d271c PA |
1160 | selftest(0, "overlay @\"%s\" failed to create @\"%s\" %s\n", |
1161 | overlay_path(overlay_nr), | |
d5e75500 | 1162 | selftest_path(selftest_nr, ovtype), |
177d271c PA |
1163 | !after ? "enabled" : "disabled"); |
1164 | return -EINVAL; | |
1165 | } | |
1166 | ||
1167 | return 0; | |
1168 | } | |
1169 | ||
1170 | /* apply an overlay and then revert it while checking before, after states */ | |
1171 | static int of_selftest_apply_revert_overlay_check(int overlay_nr, | |
d5e75500 PA |
1172 | int selftest_nr, int before, int after, |
1173 | enum overlay_type ovtype) | |
177d271c PA |
1174 | { |
1175 | int ret, ov_id; | |
1176 | ||
1177 | /* selftest device must be in before state */ | |
d5e75500 | 1178 | if (of_selftest_device_exists(selftest_nr, ovtype) != before) { |
177d271c PA |
1179 | selftest(0, "overlay @\"%s\" with device @\"%s\" %s\n", |
1180 | overlay_path(overlay_nr), | |
d5e75500 | 1181 | selftest_path(selftest_nr, ovtype), |
177d271c PA |
1182 | !before ? "enabled" : "disabled"); |
1183 | return -EINVAL; | |
1184 | } | |
1185 | ||
1186 | /* apply the overlay */ | |
1187 | ret = of_selftest_apply_overlay(overlay_nr, selftest_nr, &ov_id); | |
1188 | if (ret != 0) { | |
1189 | /* of_selftest_apply_overlay already called selftest() */ | |
1190 | return ret; | |
1191 | } | |
1192 | ||
1193 | /* selftest device must be in after state */ | |
d5e75500 | 1194 | if (of_selftest_device_exists(selftest_nr, ovtype) != after) { |
177d271c PA |
1195 | selftest(0, "overlay @\"%s\" failed to create @\"%s\" %s\n", |
1196 | overlay_path(overlay_nr), | |
d5e75500 | 1197 | selftest_path(selftest_nr, ovtype), |
177d271c PA |
1198 | !after ? "enabled" : "disabled"); |
1199 | return -EINVAL; | |
1200 | } | |
1201 | ||
1202 | ret = of_overlay_destroy(ov_id); | |
1203 | if (ret != 0) { | |
1204 | selftest(0, "overlay @\"%s\" failed to be destroyed @\"%s\"\n", | |
1205 | overlay_path(overlay_nr), | |
d5e75500 | 1206 | selftest_path(selftest_nr, ovtype)); |
177d271c PA |
1207 | return ret; |
1208 | } | |
1209 | ||
1210 | /* selftest device must be again in before state */ | |
d5e75500 | 1211 | if (of_selftest_device_exists(selftest_nr, PDEV_OVERLAY) != before) { |
177d271c PA |
1212 | selftest(0, "overlay @\"%s\" with device @\"%s\" %s\n", |
1213 | overlay_path(overlay_nr), | |
d5e75500 | 1214 | selftest_path(selftest_nr, ovtype), |
177d271c PA |
1215 | !before ? "enabled" : "disabled"); |
1216 | return -EINVAL; | |
1217 | } | |
1218 | ||
1219 | return 0; | |
1220 | } | |
1221 | ||
1222 | /* test activation of device */ | |
1223 | static void of_selftest_overlay_0(void) | |
1224 | { | |
1225 | int ret; | |
1226 | ||
1227 | /* device should enable */ | |
d5e75500 | 1228 | ret = of_selftest_apply_overlay_check(0, 0, 0, 1, PDEV_OVERLAY); |
177d271c PA |
1229 | if (ret != 0) |
1230 | return; | |
1231 | ||
1232 | selftest(1, "overlay test %d passed\n", 0); | |
1233 | } | |
1234 | ||
1235 | /* test deactivation of device */ | |
1236 | static void of_selftest_overlay_1(void) | |
1237 | { | |
1238 | int ret; | |
1239 | ||
1240 | /* device should disable */ | |
d5e75500 | 1241 | ret = of_selftest_apply_overlay_check(1, 1, 1, 0, PDEV_OVERLAY); |
177d271c PA |
1242 | if (ret != 0) |
1243 | return; | |
1244 | ||
1245 | selftest(1, "overlay test %d passed\n", 1); | |
1246 | } | |
1247 | ||
1248 | /* test activation of device */ | |
1249 | static void of_selftest_overlay_2(void) | |
1250 | { | |
1251 | int ret; | |
1252 | ||
1253 | /* device should enable */ | |
d5e75500 | 1254 | ret = of_selftest_apply_overlay_check(2, 2, 0, 1, PDEV_OVERLAY); |
177d271c PA |
1255 | if (ret != 0) |
1256 | return; | |
1257 | ||
1258 | selftest(1, "overlay test %d passed\n", 2); | |
1259 | } | |
1260 | ||
1261 | /* test deactivation of device */ | |
1262 | static void of_selftest_overlay_3(void) | |
1263 | { | |
1264 | int ret; | |
1265 | ||
1266 | /* device should disable */ | |
d5e75500 | 1267 | ret = of_selftest_apply_overlay_check(3, 3, 1, 0, PDEV_OVERLAY); |
177d271c PA |
1268 | if (ret != 0) |
1269 | return; | |
1270 | ||
1271 | selftest(1, "overlay test %d passed\n", 3); | |
1272 | } | |
1273 | ||
1274 | /* test activation of a full device node */ | |
1275 | static void of_selftest_overlay_4(void) | |
1276 | { | |
1277 | int ret; | |
1278 | ||
1279 | /* device should disable */ | |
d5e75500 | 1280 | ret = of_selftest_apply_overlay_check(4, 4, 0, 1, PDEV_OVERLAY); |
177d271c PA |
1281 | if (ret != 0) |
1282 | return; | |
1283 | ||
1284 | selftest(1, "overlay test %d passed\n", 4); | |
1285 | } | |
1286 | ||
1287 | /* test overlay apply/revert sequence */ | |
1288 | static void of_selftest_overlay_5(void) | |
1289 | { | |
1290 | int ret; | |
1291 | ||
1292 | /* device should disable */ | |
d5e75500 | 1293 | ret = of_selftest_apply_revert_overlay_check(5, 5, 0, 1, PDEV_OVERLAY); |
177d271c PA |
1294 | if (ret != 0) |
1295 | return; | |
1296 | ||
1297 | selftest(1, "overlay test %d passed\n", 5); | |
1298 | } | |
1299 | ||
1300 | /* test overlay application in sequence */ | |
1301 | static void of_selftest_overlay_6(void) | |
1302 | { | |
1303 | struct device_node *np; | |
1304 | int ret, i, ov_id[2]; | |
1305 | int overlay_nr = 6, selftest_nr = 6; | |
1306 | int before = 0, after = 1; | |
1307 | ||
1308 | /* selftest device must be in before state */ | |
1309 | for (i = 0; i < 2; i++) { | |
d5e75500 | 1310 | if (of_selftest_device_exists(selftest_nr + i, PDEV_OVERLAY) |
177d271c PA |
1311 | != before) { |
1312 | selftest(0, "overlay @\"%s\" with device @\"%s\" %s\n", | |
1313 | overlay_path(overlay_nr + i), | |
d5e75500 PA |
1314 | selftest_path(selftest_nr + i, |
1315 | PDEV_OVERLAY), | |
177d271c PA |
1316 | !before ? "enabled" : "disabled"); |
1317 | return; | |
1318 | } | |
1319 | } | |
1320 | ||
1321 | /* apply the overlays */ | |
1322 | for (i = 0; i < 2; i++) { | |
1323 | ||
1324 | np = of_find_node_by_path(overlay_path(overlay_nr + i)); | |
1325 | if (np == NULL) { | |
1326 | selftest(0, "could not find overlay node @\"%s\"\n", | |
1327 | overlay_path(overlay_nr + i)); | |
1328 | return; | |
1329 | } | |
1330 | ||
1331 | ret = of_overlay_create(np); | |
1332 | if (ret < 0) { | |
1333 | selftest(0, "could not create overlay from \"%s\"\n", | |
1334 | overlay_path(overlay_nr + i)); | |
1335 | return; | |
1336 | } | |
1337 | ov_id[i] = ret; | |
1338 | } | |
1339 | ||
1340 | for (i = 0; i < 2; i++) { | |
1341 | /* selftest device must be in after state */ | |
d5e75500 | 1342 | if (of_selftest_device_exists(selftest_nr + i, PDEV_OVERLAY) |
177d271c PA |
1343 | != after) { |
1344 | selftest(0, "overlay @\"%s\" failed @\"%s\" %s\n", | |
1345 | overlay_path(overlay_nr + i), | |
d5e75500 PA |
1346 | selftest_path(selftest_nr + i, |
1347 | PDEV_OVERLAY), | |
177d271c PA |
1348 | !after ? "enabled" : "disabled"); |
1349 | return; | |
1350 | } | |
1351 | } | |
1352 | ||
1353 | for (i = 1; i >= 0; i--) { | |
1354 | ret = of_overlay_destroy(ov_id[i]); | |
1355 | if (ret != 0) { | |
1356 | selftest(0, "overlay @\"%s\" failed destroy @\"%s\"\n", | |
1357 | overlay_path(overlay_nr + i), | |
d5e75500 PA |
1358 | selftest_path(selftest_nr + i, |
1359 | PDEV_OVERLAY)); | |
177d271c PA |
1360 | return; |
1361 | } | |
1362 | } | |
1363 | ||
1364 | for (i = 0; i < 2; i++) { | |
1365 | /* selftest device must be again in before state */ | |
d5e75500 | 1366 | if (of_selftest_device_exists(selftest_nr + i, PDEV_OVERLAY) |
177d271c PA |
1367 | != before) { |
1368 | selftest(0, "overlay @\"%s\" with device @\"%s\" %s\n", | |
1369 | overlay_path(overlay_nr + i), | |
d5e75500 PA |
1370 | selftest_path(selftest_nr + i, |
1371 | PDEV_OVERLAY), | |
177d271c PA |
1372 | !before ? "enabled" : "disabled"); |
1373 | return; | |
1374 | } | |
1375 | } | |
1376 | ||
1377 | selftest(1, "overlay test %d passed\n", 6); | |
1378 | } | |
1379 | ||
1380 | /* test overlay application in sequence */ | |
1381 | static void of_selftest_overlay_8(void) | |
1382 | { | |
1383 | struct device_node *np; | |
1384 | int ret, i, ov_id[2]; | |
1385 | int overlay_nr = 8, selftest_nr = 8; | |
1386 | ||
1387 | /* we don't care about device state in this test */ | |
1388 | ||
1389 | /* apply the overlays */ | |
1390 | for (i = 0; i < 2; i++) { | |
1391 | ||
1392 | np = of_find_node_by_path(overlay_path(overlay_nr + i)); | |
1393 | if (np == NULL) { | |
1394 | selftest(0, "could not find overlay node @\"%s\"\n", | |
1395 | overlay_path(overlay_nr + i)); | |
1396 | return; | |
1397 | } | |
1398 | ||
1399 | ret = of_overlay_create(np); | |
1400 | if (ret < 0) { | |
1401 | selftest(0, "could not create overlay from \"%s\"\n", | |
1402 | overlay_path(overlay_nr + i)); | |
1403 | return; | |
1404 | } | |
1405 | ov_id[i] = ret; | |
1406 | } | |
1407 | ||
1408 | /* now try to remove first overlay (it should fail) */ | |
1409 | ret = of_overlay_destroy(ov_id[0]); | |
1410 | if (ret == 0) { | |
1411 | selftest(0, "overlay @\"%s\" was destroyed @\"%s\"\n", | |
1412 | overlay_path(overlay_nr + 0), | |
d5e75500 PA |
1413 | selftest_path(selftest_nr, |
1414 | PDEV_OVERLAY)); | |
177d271c PA |
1415 | return; |
1416 | } | |
1417 | ||
1418 | /* removing them in order should work */ | |
1419 | for (i = 1; i >= 0; i--) { | |
1420 | ret = of_overlay_destroy(ov_id[i]); | |
1421 | if (ret != 0) { | |
1422 | selftest(0, "overlay @\"%s\" not destroyed @\"%s\"\n", | |
1423 | overlay_path(overlay_nr + i), | |
d5e75500 PA |
1424 | selftest_path(selftest_nr, |
1425 | PDEV_OVERLAY)); | |
177d271c PA |
1426 | return; |
1427 | } | |
1428 | } | |
1429 | ||
1430 | selftest(1, "overlay test %d passed\n", 8); | |
1431 | } | |
1432 | ||
6b1271de PA |
1433 | /* test insertion of a bus with parent devices */ |
1434 | static void of_selftest_overlay_10(void) | |
1435 | { | |
1436 | int ret; | |
1437 | char *child_path; | |
1438 | ||
1439 | /* device should disable */ | |
d5e75500 PA |
1440 | ret = of_selftest_apply_overlay_check(10, 10, 0, 1, PDEV_OVERLAY); |
1441 | if (selftest(ret == 0, | |
1442 | "overlay test %d failed; overlay application\n", 10)) | |
6b1271de PA |
1443 | return; |
1444 | ||
1445 | child_path = kasprintf(GFP_KERNEL, "%s/test-selftest101", | |
d5e75500 | 1446 | selftest_path(10, PDEV_OVERLAY)); |
6b1271de PA |
1447 | if (selftest(child_path, "overlay test %d failed; kasprintf\n", 10)) |
1448 | return; | |
1449 | ||
d5e75500 | 1450 | ret = of_path_device_type_exists(child_path, PDEV_OVERLAY); |
6b1271de PA |
1451 | kfree(child_path); |
1452 | if (selftest(ret, "overlay test %d failed; no child device\n", 10)) | |
1453 | return; | |
1454 | } | |
1455 | ||
1456 | /* test insertion of a bus with parent devices (and revert) */ | |
1457 | static void of_selftest_overlay_11(void) | |
1458 | { | |
1459 | int ret; | |
1460 | ||
1461 | /* device should disable */ | |
d5e75500 PA |
1462 | ret = of_selftest_apply_revert_overlay_check(11, 11, 0, 1, |
1463 | PDEV_OVERLAY); | |
1464 | if (selftest(ret == 0, | |
1465 | "overlay test %d failed; overlay application\n", 11)) | |
1466 | return; | |
1467 | } | |
1468 | ||
4252de39 | 1469 | #if IS_BUILTIN(CONFIG_I2C) && IS_ENABLED(CONFIG_OF_OVERLAY) |
d5e75500 PA |
1470 | |
1471 | struct selftest_i2c_bus_data { | |
1472 | struct platform_device *pdev; | |
1473 | struct i2c_adapter adap; | |
1474 | }; | |
1475 | ||
1476 | static int selftest_i2c_master_xfer(struct i2c_adapter *adap, | |
1477 | struct i2c_msg *msgs, int num) | |
1478 | { | |
1479 | struct selftest_i2c_bus_data *std = i2c_get_adapdata(adap); | |
1480 | ||
1481 | (void)std; | |
1482 | ||
1483 | return num; | |
1484 | } | |
1485 | ||
1486 | static u32 selftest_i2c_functionality(struct i2c_adapter *adap) | |
1487 | { | |
1488 | return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL; | |
1489 | } | |
1490 | ||
1491 | static const struct i2c_algorithm selftest_i2c_algo = { | |
1492 | .master_xfer = selftest_i2c_master_xfer, | |
1493 | .functionality = selftest_i2c_functionality, | |
1494 | }; | |
1495 | ||
1496 | static int selftest_i2c_bus_probe(struct platform_device *pdev) | |
1497 | { | |
1498 | struct device *dev = &pdev->dev; | |
1499 | struct device_node *np = dev->of_node; | |
1500 | struct selftest_i2c_bus_data *std; | |
1501 | struct i2c_adapter *adap; | |
1502 | int ret; | |
1503 | ||
1504 | if (np == NULL) { | |
1505 | dev_err(dev, "No OF data for device\n"); | |
1506 | return -EINVAL; | |
1507 | ||
1508 | } | |
1509 | ||
1510 | dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name); | |
1511 | ||
1512 | std = devm_kzalloc(dev, sizeof(*std), GFP_KERNEL); | |
1513 | if (!std) { | |
1514 | dev_err(dev, "Failed to allocate selftest i2c data\n"); | |
1515 | return -ENOMEM; | |
1516 | } | |
1517 | ||
1518 | /* link them together */ | |
1519 | std->pdev = pdev; | |
1520 | platform_set_drvdata(pdev, std); | |
1521 | ||
1522 | adap = &std->adap; | |
1523 | i2c_set_adapdata(adap, std); | |
1524 | adap->nr = -1; | |
1525 | strlcpy(adap->name, pdev->name, sizeof(adap->name)); | |
1526 | adap->class = I2C_CLASS_DEPRECATED; | |
1527 | adap->algo = &selftest_i2c_algo; | |
1528 | adap->dev.parent = dev; | |
1529 | adap->dev.of_node = dev->of_node; | |
1530 | adap->timeout = 5 * HZ; | |
1531 | adap->retries = 3; | |
1532 | ||
1533 | ret = i2c_add_numbered_adapter(adap); | |
1534 | if (ret != 0) { | |
1535 | dev_err(dev, "Failed to add I2C adapter\n"); | |
1536 | return ret; | |
1537 | } | |
1538 | ||
1539 | return 0; | |
1540 | } | |
1541 | ||
1542 | static int selftest_i2c_bus_remove(struct platform_device *pdev) | |
1543 | { | |
1544 | struct device *dev = &pdev->dev; | |
1545 | struct device_node *np = dev->of_node; | |
1546 | struct selftest_i2c_bus_data *std = platform_get_drvdata(pdev); | |
1547 | ||
1548 | dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name); | |
1549 | i2c_del_adapter(&std->adap); | |
1550 | ||
1551 | return 0; | |
1552 | } | |
1553 | ||
afaed7a9 | 1554 | static const struct of_device_id selftest_i2c_bus_match[] = { |
d5e75500 PA |
1555 | { .compatible = "selftest-i2c-bus", }, |
1556 | {}, | |
1557 | }; | |
1558 | ||
1559 | static struct platform_driver selftest_i2c_bus_driver = { | |
1560 | .probe = selftest_i2c_bus_probe, | |
1561 | .remove = selftest_i2c_bus_remove, | |
1562 | .driver = { | |
1563 | .name = "selftest-i2c-bus", | |
1564 | .of_match_table = of_match_ptr(selftest_i2c_bus_match), | |
1565 | }, | |
1566 | }; | |
1567 | ||
1568 | static int selftest_i2c_dev_probe(struct i2c_client *client, | |
1569 | const struct i2c_device_id *id) | |
1570 | { | |
1571 | struct device *dev = &client->dev; | |
1572 | struct device_node *np = client->dev.of_node; | |
1573 | ||
1574 | if (!np) { | |
1575 | dev_err(dev, "No OF node\n"); | |
1576 | return -EINVAL; | |
1577 | } | |
1578 | ||
1579 | dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name); | |
1580 | ||
1581 | return 0; | |
1582 | }; | |
1583 | ||
1584 | static int selftest_i2c_dev_remove(struct i2c_client *client) | |
1585 | { | |
1586 | struct device *dev = &client->dev; | |
1587 | struct device_node *np = client->dev.of_node; | |
1588 | ||
1589 | dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name); | |
1590 | return 0; | |
1591 | } | |
1592 | ||
1593 | static const struct i2c_device_id selftest_i2c_dev_id[] = { | |
1594 | { .name = "selftest-i2c-dev" }, | |
1595 | { } | |
1596 | }; | |
1597 | ||
1598 | static struct i2c_driver selftest_i2c_dev_driver = { | |
1599 | .driver = { | |
1600 | .name = "selftest-i2c-dev", | |
1601 | .owner = THIS_MODULE, | |
1602 | }, | |
1603 | .probe = selftest_i2c_dev_probe, | |
1604 | .remove = selftest_i2c_dev_remove, | |
1605 | .id_table = selftest_i2c_dev_id, | |
1606 | }; | |
1607 | ||
4252de39 | 1608 | #if IS_BUILTIN(CONFIG_I2C_MUX) |
d5e75500 PA |
1609 | |
1610 | struct selftest_i2c_mux_data { | |
1611 | int nchans; | |
1612 | struct i2c_adapter *adap[]; | |
1613 | }; | |
1614 | ||
1615 | static int selftest_i2c_mux_select_chan(struct i2c_adapter *adap, | |
1616 | void *client, u32 chan) | |
1617 | { | |
1618 | return 0; | |
1619 | } | |
1620 | ||
1621 | static int selftest_i2c_mux_probe(struct i2c_client *client, | |
1622 | const struct i2c_device_id *id) | |
1623 | { | |
1624 | int ret, i, nchans, size; | |
1625 | struct device *dev = &client->dev; | |
1626 | struct i2c_adapter *adap = to_i2c_adapter(dev->parent); | |
1627 | struct device_node *np = client->dev.of_node, *child; | |
1628 | struct selftest_i2c_mux_data *stm; | |
1629 | u32 reg, max_reg; | |
1630 | ||
1631 | dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name); | |
1632 | ||
1633 | if (!np) { | |
1634 | dev_err(dev, "No OF node\n"); | |
1635 | return -EINVAL; | |
1636 | } | |
1637 | ||
1638 | max_reg = (u32)-1; | |
1639 | for_each_child_of_node(np, child) { | |
1640 | ret = of_property_read_u32(child, "reg", ®); | |
1641 | if (ret) | |
1642 | continue; | |
1643 | if (max_reg == (u32)-1 || reg > max_reg) | |
1644 | max_reg = reg; | |
1645 | } | |
1646 | nchans = max_reg == (u32)-1 ? 0 : max_reg + 1; | |
1647 | if (nchans == 0) { | |
1648 | dev_err(dev, "No channels\n"); | |
1649 | return -EINVAL; | |
1650 | } | |
1651 | ||
1652 | size = offsetof(struct selftest_i2c_mux_data, adap[nchans]); | |
1653 | stm = devm_kzalloc(dev, size, GFP_KERNEL); | |
1654 | if (!stm) { | |
1655 | dev_err(dev, "Out of memory\n"); | |
1656 | return -ENOMEM; | |
1657 | } | |
1658 | stm->nchans = nchans; | |
1659 | for (i = 0; i < nchans; i++) { | |
1660 | stm->adap[i] = i2c_add_mux_adapter(adap, dev, client, | |
1661 | 0, i, 0, selftest_i2c_mux_select_chan, NULL); | |
1662 | if (!stm->adap[i]) { | |
1663 | dev_err(dev, "Failed to register mux #%d\n", i); | |
1664 | for (i--; i >= 0; i--) | |
1665 | i2c_del_mux_adapter(stm->adap[i]); | |
1666 | return -ENODEV; | |
1667 | } | |
1668 | } | |
1669 | ||
1670 | i2c_set_clientdata(client, stm); | |
1671 | ||
1672 | return 0; | |
1673 | }; | |
1674 | ||
1675 | static int selftest_i2c_mux_remove(struct i2c_client *client) | |
1676 | { | |
1677 | struct device *dev = &client->dev; | |
1678 | struct device_node *np = client->dev.of_node; | |
1679 | struct selftest_i2c_mux_data *stm = i2c_get_clientdata(client); | |
1680 | int i; | |
1681 | ||
1682 | dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name); | |
1683 | for (i = stm->nchans - 1; i >= 0; i--) | |
1684 | i2c_del_mux_adapter(stm->adap[i]); | |
1685 | return 0; | |
1686 | } | |
1687 | ||
1688 | static const struct i2c_device_id selftest_i2c_mux_id[] = { | |
1689 | { .name = "selftest-i2c-mux" }, | |
1690 | { } | |
1691 | }; | |
1692 | ||
1693 | static struct i2c_driver selftest_i2c_mux_driver = { | |
1694 | .driver = { | |
1695 | .name = "selftest-i2c-mux", | |
1696 | .owner = THIS_MODULE, | |
1697 | }, | |
1698 | .probe = selftest_i2c_mux_probe, | |
1699 | .remove = selftest_i2c_mux_remove, | |
1700 | .id_table = selftest_i2c_mux_id, | |
1701 | }; | |
1702 | ||
1703 | #endif | |
1704 | ||
1705 | static int of_selftest_overlay_i2c_init(void) | |
1706 | { | |
1707 | int ret; | |
1708 | ||
1709 | ret = i2c_add_driver(&selftest_i2c_dev_driver); | |
1710 | if (selftest(ret == 0, | |
1711 | "could not register selftest i2c device driver\n")) | |
1712 | return ret; | |
1713 | ||
1714 | ret = platform_driver_register(&selftest_i2c_bus_driver); | |
1715 | if (selftest(ret == 0, | |
1716 | "could not register selftest i2c bus driver\n")) | |
1717 | return ret; | |
1718 | ||
4252de39 | 1719 | #if IS_BUILTIN(CONFIG_I2C_MUX) |
d5e75500 PA |
1720 | ret = i2c_add_driver(&selftest_i2c_mux_driver); |
1721 | if (selftest(ret == 0, | |
1722 | "could not register selftest i2c mux driver\n")) | |
1723 | return ret; | |
1724 | #endif | |
1725 | ||
1726 | return 0; | |
1727 | } | |
1728 | ||
1729 | static void of_selftest_overlay_i2c_cleanup(void) | |
1730 | { | |
4252de39 | 1731 | #if IS_BUILTIN(CONFIG_I2C_MUX) |
d5e75500 PA |
1732 | i2c_del_driver(&selftest_i2c_mux_driver); |
1733 | #endif | |
1734 | platform_driver_unregister(&selftest_i2c_bus_driver); | |
1735 | i2c_del_driver(&selftest_i2c_dev_driver); | |
1736 | } | |
1737 | ||
1738 | static void of_selftest_overlay_i2c_12(void) | |
1739 | { | |
1740 | int ret; | |
1741 | ||
1742 | /* device should enable */ | |
1743 | ret = of_selftest_apply_overlay_check(12, 12, 0, 1, I2C_OVERLAY); | |
1744 | if (ret != 0) | |
1745 | return; | |
1746 | ||
1747 | selftest(1, "overlay test %d passed\n", 12); | |
1748 | } | |
1749 | ||
1750 | /* test deactivation of device */ | |
1751 | static void of_selftest_overlay_i2c_13(void) | |
1752 | { | |
1753 | int ret; | |
1754 | ||
1755 | /* device should disable */ | |
1756 | ret = of_selftest_apply_overlay_check(13, 13, 1, 0, I2C_OVERLAY); | |
1757 | if (ret != 0) | |
6b1271de | 1758 | return; |
d5e75500 PA |
1759 | |
1760 | selftest(1, "overlay test %d passed\n", 13); | |
1761 | } | |
1762 | ||
1763 | /* just check for i2c mux existence */ | |
1764 | static void of_selftest_overlay_i2c_14(void) | |
1765 | { | |
6b1271de PA |
1766 | } |
1767 | ||
d5e75500 PA |
1768 | static void of_selftest_overlay_i2c_15(void) |
1769 | { | |
1770 | int ret; | |
1771 | ||
1772 | /* device should enable */ | |
1773 | ret = of_selftest_apply_overlay_check(16, 15, 0, 1, I2C_OVERLAY); | |
1774 | if (ret != 0) | |
1775 | return; | |
1776 | ||
1777 | selftest(1, "overlay test %d passed\n", 15); | |
1778 | } | |
1779 | ||
1780 | #else | |
1781 | ||
1782 | static inline void of_selftest_overlay_i2c_14(void) { } | |
1783 | static inline void of_selftest_overlay_i2c_15(void) { } | |
1784 | ||
1785 | #endif | |
1786 | ||
177d271c PA |
1787 | static void __init of_selftest_overlay(void) |
1788 | { | |
1789 | struct device_node *bus_np = NULL; | |
1790 | int ret; | |
1791 | ||
1792 | ret = platform_driver_register(&selftest_driver); | |
1793 | if (ret != 0) { | |
1794 | selftest(0, "could not register selftest driver\n"); | |
1795 | goto out; | |
1796 | } | |
1797 | ||
1798 | bus_np = of_find_node_by_path(bus_path); | |
1799 | if (bus_np == NULL) { | |
1800 | selftest(0, "could not find bus_path \"%s\"\n", bus_path); | |
1801 | goto out; | |
1802 | } | |
1803 | ||
1804 | ret = of_platform_populate(bus_np, of_default_bus_match_table, | |
1805 | NULL, NULL); | |
1806 | if (ret != 0) { | |
1807 | selftest(0, "could not populate bus @ \"%s\"\n", bus_path); | |
1808 | goto out; | |
1809 | } | |
1810 | ||
d5e75500 | 1811 | if (!of_selftest_device_exists(100, PDEV_OVERLAY)) { |
177d271c | 1812 | selftest(0, "could not find selftest0 @ \"%s\"\n", |
d5e75500 | 1813 | selftest_path(100, PDEV_OVERLAY)); |
177d271c PA |
1814 | goto out; |
1815 | } | |
1816 | ||
d5e75500 | 1817 | if (of_selftest_device_exists(101, PDEV_OVERLAY)) { |
177d271c | 1818 | selftest(0, "selftest1 @ \"%s\" should not exist\n", |
d5e75500 | 1819 | selftest_path(101, PDEV_OVERLAY)); |
177d271c PA |
1820 | goto out; |
1821 | } | |
1822 | ||
1823 | selftest(1, "basic infrastructure of overlays passed"); | |
1824 | ||
1825 | /* tests in sequence */ | |
1826 | of_selftest_overlay_0(); | |
1827 | of_selftest_overlay_1(); | |
1828 | of_selftest_overlay_2(); | |
1829 | of_selftest_overlay_3(); | |
1830 | of_selftest_overlay_4(); | |
1831 | of_selftest_overlay_5(); | |
1832 | of_selftest_overlay_6(); | |
1833 | of_selftest_overlay_8(); | |
1834 | ||
6b1271de PA |
1835 | of_selftest_overlay_10(); |
1836 | of_selftest_overlay_11(); | |
1837 | ||
4252de39 | 1838 | #if IS_BUILTIN(CONFIG_I2C) |
d5e75500 PA |
1839 | if (selftest(of_selftest_overlay_i2c_init() == 0, "i2c init failed\n")) |
1840 | goto out; | |
1841 | ||
1842 | of_selftest_overlay_i2c_12(); | |
1843 | of_selftest_overlay_i2c_13(); | |
1844 | of_selftest_overlay_i2c_14(); | |
1845 | of_selftest_overlay_i2c_15(); | |
1846 | ||
1847 | of_selftest_overlay_i2c_cleanup(); | |
1848 | #endif | |
1849 | ||
177d271c PA |
1850 | out: |
1851 | of_node_put(bus_np); | |
1852 | } | |
1853 | ||
1854 | #else | |
1855 | static inline void __init of_selftest_overlay(void) { } | |
1856 | #endif | |
1857 | ||
53a42093 GL |
1858 | static int __init of_selftest(void) |
1859 | { | |
1860 | struct device_node *np; | |
ae9304c9 GM |
1861 | int res; |
1862 | ||
1863 | /* adding data for selftest */ | |
1864 | res = selftest_data_add(); | |
1865 | if (res) | |
1866 | return res; | |
788ec2fc GL |
1867 | if (!of_aliases) |
1868 | of_aliases = of_find_node_by_path("/aliases"); | |
53a42093 GL |
1869 | |
1870 | np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); | |
1871 | if (!np) { | |
1872 | pr_info("No testcase data in device tree; not running tests\n"); | |
1873 | return 0; | |
1874 | } | |
1875 | of_node_put(np); | |
1876 | ||
1877 | pr_info("start of selftest - you will see error messages\n"); | |
f2051d6a | 1878 | of_selftest_check_tree_linkage(); |
841ec213 | 1879 | of_selftest_check_phandles(); |
ae91ff72 | 1880 | of_selftest_find_node_by_name(); |
7e66c5c7 | 1881 | of_selftest_dynamic(); |
53a42093 | 1882 | of_selftest_parse_phandle_with_args(); |
a87fa1d8 | 1883 | of_selftest_property_string(); |
69843396 | 1884 | of_selftest_property_copy(); |
201c910b | 1885 | of_selftest_changeset(); |
a9f10ca7 | 1886 | of_selftest_parse_interrupts(); |
79d97015 | 1887 | of_selftest_parse_interrupts_extended(); |
1f42e5dd | 1888 | of_selftest_match_node(); |
82c0f589 | 1889 | of_selftest_platform_populate(); |
177d271c | 1890 | of_selftest_overlay(); |
ae9304c9 | 1891 | |
f2051d6a GL |
1892 | /* Double check linkage after removing testcase data */ |
1893 | of_selftest_check_tree_linkage(); | |
1894 | ||
1895 | pr_info("end of selftest - %i passed, %i failed\n", | |
1896 | selftest_results.passed, selftest_results.failed); | |
1897 | ||
53a42093 GL |
1898 | return 0; |
1899 | } | |
1900 | late_initcall(of_selftest); |