blob: 53c83d66eb7e23461294aa22f77f41f6c0739eb5 [file] [log] [blame]
Grant Likely53a42092011-12-12 09:25:57 -07001/*
2 * Self tests for device tree subsystem
3 */
4
Grant Likelycabb7d52013-02-12 21:19:37 +00005#define pr_fmt(fmt) "### dt-test ### " fmt
Grant Likely53a42092011-12-12 09:25:57 -07006
7#include <linux/clk.h>
8#include <linux/err.h>
9#include <linux/errno.h>
Grant Likely841ec212014-10-02 13:09:15 +010010#include <linux/hashtable.h>
Grant Likely53a42092011-12-12 09:25:57 -070011#include <linux/of.h>
Gaurav Minochaae9304c2014-07-16 23:09:39 -070012#include <linux/of_fdt.h>
Grant Likelya9f10ca2013-10-11 22:04:23 +010013#include <linux/of_irq.h>
Rob Herring82c0f582014-04-23 17:57:40 -050014#include <linux/of_platform.h>
Grant Likely53a42092011-12-12 09:25:57 -070015#include <linux/list.h>
16#include <linux/mutex.h>
17#include <linux/slab.h>
18#include <linux/device.h>
Pantelis Antoniou177d2712014-10-28 22:35:59 +020019#include <linux/platform_device.h>
20#include <linux/of_platform.h>
Grant Likely53a42092011-12-12 09:25:57 -070021
Pantelis Antonioud5e75502015-01-12 19:02:49 +020022#include <linux/i2c.h>
23#include <linux/i2c-mux.h>
24
Pantelis Antoniou492a22a2015-04-07 22:23:49 +030025#include <linux/bitops.h>
26
Pantelis Antoniou69843392014-07-04 19:58:47 +030027#include "of_private.h"
28
Wang Long9697a552015-03-11 08:36:54 +000029static struct unittest_results {
Grant Likelya9f10ca2013-10-11 22:04:23 +010030 int passed;
31 int failed;
Wang Long9697a552015-03-11 08:36:54 +000032} unittest_results;
Grant Likelya9f10ca2013-10-11 22:04:23 +010033
Wang Long9697a552015-03-11 08:36:54 +000034#define unittest(result, fmt, ...) ({ \
Grant Likely851da972014-11-04 13:14:13 +000035 bool failed = !(result); \
36 if (failed) { \
Wang Long9697a552015-03-11 08:36:54 +000037 unittest_results.failed++; \
Grant Likelya9f10ca2013-10-11 22:04:23 +010038 pr_err("FAIL %s():%i " fmt, __func__, __LINE__, ##__VA_ARGS__); \
Grant Likelycabb7d52013-02-12 21:19:37 +000039 } else { \
Wang Long9697a552015-03-11 08:36:54 +000040 unittest_results.passed++; \
Grant Likelya9f10ca2013-10-11 22:04:23 +010041 pr_debug("pass %s():%i\n", __func__, __LINE__); \
Grant Likelycabb7d52013-02-12 21:19:37 +000042 } \
Grant Likely851da972014-11-04 13:14:13 +000043 failed; \
44})
Grant Likely53a42092011-12-12 09:25:57 -070045
Wang Long9697a552015-03-11 08:36:54 +000046static void __init of_unittest_find_node_by_name(void)
Grant Likelyae91ff72014-03-14 13:53:10 +000047{
48 struct device_node *np;
Leif Lindholm75c28c02014-11-28 11:34:28 +000049 const char *options;
Grant Likelyae91ff72014-03-14 13:53:10 +000050
51 np = of_find_node_by_path("/testcase-data");
Wang Long9697a552015-03-11 08:36:54 +000052 unittest(np && !strcmp("/testcase-data", np->full_name),
Grant Likelyae91ff72014-03-14 13:53:10 +000053 "find /testcase-data failed\n");
54 of_node_put(np);
55
56 /* Test if trailing '/' works */
57 np = of_find_node_by_path("/testcase-data/");
Wang Long9697a552015-03-11 08:36:54 +000058 unittest(!np, "trailing '/' on /testcase-data/ should fail\n");
Grant Likelyae91ff72014-03-14 13:53:10 +000059
60 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
Wang Long9697a552015-03-11 08:36:54 +000061 unittest(np && !strcmp("/testcase-data/phandle-tests/consumer-a", np->full_name),
Grant Likelyae91ff72014-03-14 13:53:10 +000062 "find /testcase-data/phandle-tests/consumer-a failed\n");
63 of_node_put(np);
64
65 np = of_find_node_by_path("testcase-alias");
Wang Long9697a552015-03-11 08:36:54 +000066 unittest(np && !strcmp("/testcase-data", np->full_name),
Grant Likelyae91ff72014-03-14 13:53:10 +000067 "find testcase-alias failed\n");
68 of_node_put(np);
69
70 /* Test if trailing '/' works on aliases */
71 np = of_find_node_by_path("testcase-alias/");
Wang Long9697a552015-03-11 08:36:54 +000072 unittest(!np, "trailing '/' on testcase-alias/ should fail\n");
Grant Likelyae91ff72014-03-14 13:53:10 +000073
74 np = of_find_node_by_path("testcase-alias/phandle-tests/consumer-a");
Wang Long9697a552015-03-11 08:36:54 +000075 unittest(np && !strcmp("/testcase-data/phandle-tests/consumer-a", np->full_name),
Grant Likelyae91ff72014-03-14 13:53:10 +000076 "find testcase-alias/phandle-tests/consumer-a failed\n");
77 of_node_put(np);
78
79 np = of_find_node_by_path("/testcase-data/missing-path");
Wang Long9697a552015-03-11 08:36:54 +000080 unittest(!np, "non-existent path returned node %s\n", np->full_name);
Grant Likelyae91ff72014-03-14 13:53:10 +000081 of_node_put(np);
82
83 np = of_find_node_by_path("missing-alias");
Wang Long9697a552015-03-11 08:36:54 +000084 unittest(!np, "non-existent alias returned node %s\n", np->full_name);
Grant Likelyae91ff72014-03-14 13:53:10 +000085 of_node_put(np);
86
87 np = of_find_node_by_path("testcase-alias/missing-path");
Wang Long9697a552015-03-11 08:36:54 +000088 unittest(!np, "non-existent alias with relative path returned node %s\n", np->full_name);
Grant Likelyae91ff72014-03-14 13:53:10 +000089 of_node_put(np);
Leif Lindholm75c28c02014-11-28 11:34:28 +000090
91 np = of_find_node_opts_by_path("/testcase-data:testoption", &options);
Wang Long9697a552015-03-11 08:36:54 +000092 unittest(np && !strcmp("testoption", options),
Leif Lindholm75c28c02014-11-28 11:34:28 +000093 "option path test failed\n");
94 of_node_put(np);
95
Peter Hurley8cbba1a2015-03-06 13:59:59 -050096 np = of_find_node_opts_by_path("/testcase-data:test/option", &options);
Wang Long9697a552015-03-11 08:36:54 +000097 unittest(np && !strcmp("test/option", options),
Peter Hurley8cbba1a2015-03-06 13:59:59 -050098 "option path test, subcase #1 failed\n");
99 of_node_put(np);
100
Brian Norris5ca1b0d2015-03-17 12:30:32 -0700101 np = of_find_node_opts_by_path("/testcase-data/testcase-device1:test/option", &options);
Wang Long9697a552015-03-11 08:36:54 +0000102 unittest(np && !strcmp("test/option", options),
Brian Norris5ca1b0d2015-03-17 12:30:32 -0700103 "option path test, subcase #2 failed\n");
104 of_node_put(np);
105
Leif Lindholm75c28c02014-11-28 11:34:28 +0000106 np = of_find_node_opts_by_path("/testcase-data:testoption", NULL);
Wang Long9697a552015-03-11 08:36:54 +0000107 unittest(np, "NULL option path test failed\n");
Leif Lindholm75c28c02014-11-28 11:34:28 +0000108 of_node_put(np);
109
110 np = of_find_node_opts_by_path("testcase-alias:testaliasoption",
111 &options);
Wang Long9697a552015-03-11 08:36:54 +0000112 unittest(np && !strcmp("testaliasoption", options),
Leif Lindholm75c28c02014-11-28 11:34:28 +0000113 "option alias path test failed\n");
114 of_node_put(np);
115
Peter Hurley8cbba1a2015-03-06 13:59:59 -0500116 np = of_find_node_opts_by_path("testcase-alias:test/alias/option",
117 &options);
Wang Long9697a552015-03-11 08:36:54 +0000118 unittest(np && !strcmp("test/alias/option", options),
Peter Hurley8cbba1a2015-03-06 13:59:59 -0500119 "option alias path test, subcase #1 failed\n");
120 of_node_put(np);
121
Leif Lindholm75c28c02014-11-28 11:34:28 +0000122 np = of_find_node_opts_by_path("testcase-alias:testaliasoption", NULL);
Wang Long9697a552015-03-11 08:36:54 +0000123 unittest(np, "NULL option alias path test failed\n");
Leif Lindholm75c28c02014-11-28 11:34:28 +0000124 of_node_put(np);
125
126 options = "testoption";
127 np = of_find_node_opts_by_path("testcase-alias", &options);
Wang Long9697a552015-03-11 08:36:54 +0000128 unittest(np && !options, "option clearing test failed\n");
Leif Lindholm75c28c02014-11-28 11:34:28 +0000129 of_node_put(np);
130
131 options = "testoption";
132 np = of_find_node_opts_by_path("/", &options);
Wang Long9697a552015-03-11 08:36:54 +0000133 unittest(np && !options, "option clearing root node test failed\n");
Leif Lindholm75c28c02014-11-28 11:34:28 +0000134 of_node_put(np);
Grant Likelyae91ff72014-03-14 13:53:10 +0000135}
136
Wang Long9697a552015-03-11 08:36:54 +0000137static void __init of_unittest_dynamic(void)
Grant Likely7e66c5c2013-11-15 17:19:09 +0000138{
139 struct device_node *np;
140 struct property *prop;
141
142 np = of_find_node_by_path("/testcase-data");
143 if (!np) {
144 pr_err("missing testcase data\n");
145 return;
146 }
147
148 /* Array of 4 properties for the purpose of testing */
149 prop = kzalloc(sizeof(*prop) * 4, GFP_KERNEL);
150 if (!prop) {
Wang Long9697a552015-03-11 08:36:54 +0000151 unittest(0, "kzalloc() failed\n");
Grant Likely7e66c5c2013-11-15 17:19:09 +0000152 return;
153 }
154
155 /* Add a new property - should pass*/
156 prop->name = "new-property";
157 prop->value = "new-property-data";
158 prop->length = strlen(prop->value);
Wang Long9697a552015-03-11 08:36:54 +0000159 unittest(of_add_property(np, prop) == 0, "Adding a new property failed\n");
Grant Likely7e66c5c2013-11-15 17:19:09 +0000160
161 /* Try to add an existing property - should fail */
162 prop++;
163 prop->name = "new-property";
164 prop->value = "new-property-data-should-fail";
165 prop->length = strlen(prop->value);
Wang Long9697a552015-03-11 08:36:54 +0000166 unittest(of_add_property(np, prop) != 0,
Grant Likely7e66c5c2013-11-15 17:19:09 +0000167 "Adding an existing property should have failed\n");
168
169 /* Try to modify an existing property - should pass */
170 prop->value = "modify-property-data-should-pass";
171 prop->length = strlen(prop->value);
Wang Long9697a552015-03-11 08:36:54 +0000172 unittest(of_update_property(np, prop) == 0,
Grant Likely7e66c5c2013-11-15 17:19:09 +0000173 "Updating an existing property should have passed\n");
174
175 /* Try to modify non-existent property - should pass*/
176 prop++;
177 prop->name = "modify-property";
178 prop->value = "modify-missing-property-data-should-pass";
179 prop->length = strlen(prop->value);
Wang Long9697a552015-03-11 08:36:54 +0000180 unittest(of_update_property(np, prop) == 0,
Grant Likely7e66c5c2013-11-15 17:19:09 +0000181 "Updating a missing property should have passed\n");
182
183 /* Remove property - should pass */
Wang Long9697a552015-03-11 08:36:54 +0000184 unittest(of_remove_property(np, prop) == 0,
Grant Likely7e66c5c2013-11-15 17:19:09 +0000185 "Removing a property should have passed\n");
186
187 /* Adding very large property - should pass */
188 prop++;
189 prop->name = "large-property-PAGE_SIZEx8";
190 prop->length = PAGE_SIZE * 8;
191 prop->value = kzalloc(prop->length, GFP_KERNEL);
Wang Long9697a552015-03-11 08:36:54 +0000192 unittest(prop->value != NULL, "Unable to allocate large buffer\n");
Grant Likely7e66c5c2013-11-15 17:19:09 +0000193 if (prop->value)
Wang Long9697a552015-03-11 08:36:54 +0000194 unittest(of_add_property(np, prop) == 0,
Grant Likely7e66c5c2013-11-15 17:19:09 +0000195 "Adding a large property should have passed\n");
196}
197
Wang Long9697a552015-03-11 08:36:54 +0000198static int __init of_unittest_check_node_linkage(struct device_node *np)
Grant Likelyf2051d62014-10-01 17:40:22 +0100199{
Grant Likely5063e252014-10-03 16:28:27 +0100200 struct device_node *child;
Grant Likelyf2051d62014-10-01 17:40:22 +0100201 int count = 0, rc;
202
203 for_each_child_of_node(np, child) {
204 if (child->parent != np) {
205 pr_err("Child node %s links to wrong parent %s\n",
206 child->name, np->name);
Julia Lawall855ff282015-10-22 11:02:50 +0200207 rc = -EINVAL;
208 goto put_child;
Grant Likelyf2051d62014-10-01 17:40:22 +0100209 }
210
Wang Long9697a552015-03-11 08:36:54 +0000211 rc = of_unittest_check_node_linkage(child);
Grant Likelyf2051d62014-10-01 17:40:22 +0100212 if (rc < 0)
Julia Lawall855ff282015-10-22 11:02:50 +0200213 goto put_child;
Grant Likelyf2051d62014-10-01 17:40:22 +0100214 count += rc;
215 }
216
217 return count + 1;
Julia Lawall855ff282015-10-22 11:02:50 +0200218put_child:
219 of_node_put(child);
220 return rc;
Grant Likelyf2051d62014-10-01 17:40:22 +0100221}
222
Wang Long9697a552015-03-11 08:36:54 +0000223static void __init of_unittest_check_tree_linkage(void)
Grant Likelyf2051d62014-10-01 17:40:22 +0100224{
225 struct device_node *np;
226 int allnode_count = 0, child_count;
227
Grant Likely5063e252014-10-03 16:28:27 +0100228 if (!of_root)
Grant Likelyf2051d62014-10-01 17:40:22 +0100229 return;
230
231 for_each_of_allnodes(np)
232 allnode_count++;
Wang Long9697a552015-03-11 08:36:54 +0000233 child_count = of_unittest_check_node_linkage(of_root);
Grant Likelyf2051d62014-10-01 17:40:22 +0100234
Wang Long9697a552015-03-11 08:36:54 +0000235 unittest(child_count > 0, "Device node data structure is corrupted\n");
Grant Likelya2166ca2015-03-29 08:59:58 +0100236 unittest(child_count == allnode_count,
Frank Rowanda6bb1212015-03-13 23:59:01 -0700237 "allnodes list size (%i) doesn't match sibling lists size (%i)\n",
238 allnode_count, child_count);
Grant Likelyf2051d62014-10-01 17:40:22 +0100239 pr_debug("allnodes list size (%i); sibling lists size (%i)\n", allnode_count, child_count);
240}
241
Grant Likely841ec212014-10-02 13:09:15 +0100242struct node_hash {
243 struct hlist_node node;
244 struct device_node *np;
245};
246
Grant Likely2118f4b2014-10-07 11:30:31 +0100247static DEFINE_HASHTABLE(phandle_ht, 8);
Wang Long9697a552015-03-11 08:36:54 +0000248static void __init of_unittest_check_phandles(void)
Grant Likely841ec212014-10-02 13:09:15 +0100249{
250 struct device_node *np;
251 struct node_hash *nh;
252 struct hlist_node *tmp;
253 int i, dup_count = 0, phandle_count = 0;
Grant Likely841ec212014-10-02 13:09:15 +0100254
Grant Likely841ec212014-10-02 13:09:15 +0100255 for_each_of_allnodes(np) {
256 if (!np->phandle)
257 continue;
258
Grant Likely2118f4b2014-10-07 11:30:31 +0100259 hash_for_each_possible(phandle_ht, nh, node, np->phandle) {
Grant Likely841ec212014-10-02 13:09:15 +0100260 if (nh->np->phandle == np->phandle) {
261 pr_info("Duplicate phandle! %i used by %s and %s\n",
262 np->phandle, nh->np->full_name, np->full_name);
263 dup_count++;
264 break;
265 }
266 }
267
268 nh = kzalloc(sizeof(*nh), GFP_KERNEL);
269 if (WARN_ON(!nh))
270 return;
271
272 nh->np = np;
Grant Likely2118f4b2014-10-07 11:30:31 +0100273 hash_add(phandle_ht, &nh->node, np->phandle);
Grant Likely841ec212014-10-02 13:09:15 +0100274 phandle_count++;
275 }
Wang Long9697a552015-03-11 08:36:54 +0000276 unittest(dup_count == 0, "Found %i duplicates in %i phandles\n",
Grant Likely841ec212014-10-02 13:09:15 +0100277 dup_count, phandle_count);
278
279 /* Clean up */
Grant Likely2118f4b2014-10-07 11:30:31 +0100280 hash_for_each_safe(phandle_ht, i, tmp, nh, node) {
Grant Likely841ec212014-10-02 13:09:15 +0100281 hash_del(&nh->node);
282 kfree(nh);
283 }
284}
285
Wang Long9697a552015-03-11 08:36:54 +0000286static void __init of_unittest_parse_phandle_with_args(void)
Grant Likely53a42092011-12-12 09:25:57 -0700287{
288 struct device_node *np;
289 struct of_phandle_args args;
Grant Likelycabb7d52013-02-12 21:19:37 +0000290 int i, rc;
Grant Likely53a42092011-12-12 09:25:57 -0700291
Grant Likely53a42092011-12-12 09:25:57 -0700292 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
293 if (!np) {
294 pr_err("missing testcase data\n");
295 return;
296 }
297
Grant Likelybd69f732013-02-10 22:57:21 +0000298 rc = of_count_phandle_with_args(np, "phandle-list", "#phandle-cells");
Wang Long9697a552015-03-11 08:36:54 +0000299 unittest(rc == 7, "of_count_phandle_with_args() returned %i, expected 7\n", rc);
Grant Likelybd69f732013-02-10 22:57:21 +0000300
Grant Likelyf7f951c2013-02-12 17:41:22 +0000301 for (i = 0; i < 8; i++) {
Grant Likely53a42092011-12-12 09:25:57 -0700302 bool passed = true;
Frank Rowand3db316d2015-03-14 00:02:31 -0700303
Grant Likely53a42092011-12-12 09:25:57 -0700304 rc = of_parse_phandle_with_args(np, "phandle-list",
305 "#phandle-cells", i, &args);
306
307 /* Test the values from tests-phandle.dtsi */
308 switch (i) {
309 case 0:
310 passed &= !rc;
311 passed &= (args.args_count == 1);
312 passed &= (args.args[0] == (i + 1));
313 break;
314 case 1:
315 passed &= !rc;
316 passed &= (args.args_count == 2);
317 passed &= (args.args[0] == (i + 1));
318 passed &= (args.args[1] == 0);
319 break;
320 case 2:
321 passed &= (rc == -ENOENT);
322 break;
323 case 3:
324 passed &= !rc;
325 passed &= (args.args_count == 3);
326 passed &= (args.args[0] == (i + 1));
327 passed &= (args.args[1] == 4);
328 passed &= (args.args[2] == 3);
329 break;
330 case 4:
331 passed &= !rc;
332 passed &= (args.args_count == 2);
333 passed &= (args.args[0] == (i + 1));
334 passed &= (args.args[1] == 100);
335 break;
336 case 5:
337 passed &= !rc;
338 passed &= (args.args_count == 0);
339 break;
340 case 6:
341 passed &= !rc;
342 passed &= (args.args_count == 1);
343 passed &= (args.args[0] == (i + 1));
344 break;
345 case 7:
Grant Likelycabb7d52013-02-12 21:19:37 +0000346 passed &= (rc == -ENOENT);
Grant Likely53a42092011-12-12 09:25:57 -0700347 break;
348 default:
349 passed = false;
350 }
351
Wang Long9697a552015-03-11 08:36:54 +0000352 unittest(passed, "index %i - data error on node %s rc=%i\n",
Grant Likelycabb7d52013-02-12 21:19:37 +0000353 i, args.np->full_name, rc);
Grant Likely53a42092011-12-12 09:25:57 -0700354 }
355
356 /* Check for missing list property */
357 rc = of_parse_phandle_with_args(np, "phandle-list-missing",
358 "#phandle-cells", 0, &args);
Wang Long9697a552015-03-11 08:36:54 +0000359 unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);
Grant Likelybd69f732013-02-10 22:57:21 +0000360 rc = of_count_phandle_with_args(np, "phandle-list-missing",
361 "#phandle-cells");
Wang Long9697a552015-03-11 08:36:54 +0000362 unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);
Grant Likely53a42092011-12-12 09:25:57 -0700363
364 /* Check for missing cells property */
365 rc = of_parse_phandle_with_args(np, "phandle-list",
366 "#phandle-cells-missing", 0, &args);
Wang Long9697a552015-03-11 08:36:54 +0000367 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
Grant Likelybd69f732013-02-10 22:57:21 +0000368 rc = of_count_phandle_with_args(np, "phandle-list",
369 "#phandle-cells-missing");
Wang Long9697a552015-03-11 08:36:54 +0000370 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
Grant Likely53a42092011-12-12 09:25:57 -0700371
372 /* Check for bad phandle in list */
373 rc = of_parse_phandle_with_args(np, "phandle-list-bad-phandle",
374 "#phandle-cells", 0, &args);
Wang Long9697a552015-03-11 08:36:54 +0000375 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
Grant Likelybd69f732013-02-10 22:57:21 +0000376 rc = of_count_phandle_with_args(np, "phandle-list-bad-phandle",
377 "#phandle-cells");
Wang Long9697a552015-03-11 08:36:54 +0000378 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
Grant Likely53a42092011-12-12 09:25:57 -0700379
380 /* Check for incorrectly formed argument list */
381 rc = of_parse_phandle_with_args(np, "phandle-list-bad-args",
382 "#phandle-cells", 1, &args);
Wang Long9697a552015-03-11 08:36:54 +0000383 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
Grant Likelybd69f732013-02-10 22:57:21 +0000384 rc = of_count_phandle_with_args(np, "phandle-list-bad-args",
385 "#phandle-cells");
Wang Long9697a552015-03-11 08:36:54 +0000386 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
Grant Likely53a42092011-12-12 09:25:57 -0700387}
388
Wang Long9697a552015-03-11 08:36:54 +0000389static void __init of_unittest_property_string(void)
Grant Likely7aff0fe2011-12-12 09:25:58 -0700390{
Grant Likelya87fa1d2014-11-03 15:15:35 +0000391 const char *strings[4];
Grant Likely7aff0fe2011-12-12 09:25:58 -0700392 struct device_node *np;
393 int rc;
394
Grant Likely7aff0fe2011-12-12 09:25:58 -0700395 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
396 if (!np) {
397 pr_err("No testcase data in device tree\n");
398 return;
399 }
400
401 rc = of_property_match_string(np, "phandle-list-names", "first");
Wang Long9697a552015-03-11 08:36:54 +0000402 unittest(rc == 0, "first expected:0 got:%i\n", rc);
Grant Likely7aff0fe2011-12-12 09:25:58 -0700403 rc = of_property_match_string(np, "phandle-list-names", "second");
Wang Long9697a552015-03-11 08:36:54 +0000404 unittest(rc == 1, "second expected:1 got:%i\n", rc);
Grant Likely7aff0fe2011-12-12 09:25:58 -0700405 rc = of_property_match_string(np, "phandle-list-names", "third");
Wang Long9697a552015-03-11 08:36:54 +0000406 unittest(rc == 2, "third expected:2 got:%i\n", rc);
Grant Likely7aff0fe2011-12-12 09:25:58 -0700407 rc = of_property_match_string(np, "phandle-list-names", "fourth");
Wang Long9697a552015-03-11 08:36:54 +0000408 unittest(rc == -ENODATA, "unmatched string; rc=%i\n", rc);
Grant Likely7aff0fe2011-12-12 09:25:58 -0700409 rc = of_property_match_string(np, "missing-property", "blah");
Wang Long9697a552015-03-11 08:36:54 +0000410 unittest(rc == -EINVAL, "missing property; rc=%i\n", rc);
Grant Likely7aff0fe2011-12-12 09:25:58 -0700411 rc = of_property_match_string(np, "empty-property", "blah");
Wang Long9697a552015-03-11 08:36:54 +0000412 unittest(rc == -ENODATA, "empty property; rc=%i\n", rc);
Grant Likely7aff0fe2011-12-12 09:25:58 -0700413 rc = of_property_match_string(np, "unterminated-string", "blah");
Wang Long9697a552015-03-11 08:36:54 +0000414 unittest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc);
Grant Likelya87fa1d2014-11-03 15:15:35 +0000415
416 /* of_property_count_strings() tests */
417 rc = of_property_count_strings(np, "string-property");
Wang Long9697a552015-03-11 08:36:54 +0000418 unittest(rc == 1, "Incorrect string count; rc=%i\n", rc);
Grant Likelya87fa1d2014-11-03 15:15:35 +0000419 rc = of_property_count_strings(np, "phandle-list-names");
Wang Long9697a552015-03-11 08:36:54 +0000420 unittest(rc == 3, "Incorrect string count; rc=%i\n", rc);
Grant Likelya87fa1d2014-11-03 15:15:35 +0000421 rc = of_property_count_strings(np, "unterminated-string");
Wang Long9697a552015-03-11 08:36:54 +0000422 unittest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc);
Grant Likelya87fa1d2014-11-03 15:15:35 +0000423 rc = of_property_count_strings(np, "unterminated-string-list");
Wang Long9697a552015-03-11 08:36:54 +0000424 unittest(rc == -EILSEQ, "unterminated string array; rc=%i\n", rc);
Grant Likelya87fa1d2014-11-03 15:15:35 +0000425
426 /* of_property_read_string_index() tests */
427 rc = of_property_read_string_index(np, "string-property", 0, strings);
Wang Long9697a552015-03-11 08:36:54 +0000428 unittest(rc == 0 && !strcmp(strings[0], "foobar"), "of_property_read_string_index() failure; rc=%i\n", rc);
Grant Likelya87fa1d2014-11-03 15:15:35 +0000429 strings[0] = NULL;
430 rc = of_property_read_string_index(np, "string-property", 1, strings);
Wang Long9697a552015-03-11 08:36:54 +0000431 unittest(rc == -ENODATA && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
Grant Likelya87fa1d2014-11-03 15:15:35 +0000432 rc = of_property_read_string_index(np, "phandle-list-names", 0, strings);
Wang Long9697a552015-03-11 08:36:54 +0000433 unittest(rc == 0 && !strcmp(strings[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc);
Grant Likelya87fa1d2014-11-03 15:15:35 +0000434 rc = of_property_read_string_index(np, "phandle-list-names", 1, strings);
Wang Long9697a552015-03-11 08:36:54 +0000435 unittest(rc == 0 && !strcmp(strings[0], "second"), "of_property_read_string_index() failure; rc=%i\n", rc);
Grant Likelya87fa1d2014-11-03 15:15:35 +0000436 rc = of_property_read_string_index(np, "phandle-list-names", 2, strings);
Wang Long9697a552015-03-11 08:36:54 +0000437 unittest(rc == 0 && !strcmp(strings[0], "third"), "of_property_read_string_index() failure; rc=%i\n", rc);
Grant Likelya87fa1d2014-11-03 15:15:35 +0000438 strings[0] = NULL;
439 rc = of_property_read_string_index(np, "phandle-list-names", 3, strings);
Wang Long9697a552015-03-11 08:36:54 +0000440 unittest(rc == -ENODATA && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
Grant Likelya87fa1d2014-11-03 15:15:35 +0000441 strings[0] = NULL;
442 rc = of_property_read_string_index(np, "unterminated-string", 0, strings);
Wang Long9697a552015-03-11 08:36:54 +0000443 unittest(rc == -EILSEQ && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
Grant Likelya87fa1d2014-11-03 15:15:35 +0000444 rc = of_property_read_string_index(np, "unterminated-string-list", 0, strings);
Wang Long9697a552015-03-11 08:36:54 +0000445 unittest(rc == 0 && !strcmp(strings[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc);
Grant Likelya87fa1d2014-11-03 15:15:35 +0000446 strings[0] = NULL;
447 rc = of_property_read_string_index(np, "unterminated-string-list", 2, strings); /* should fail */
Wang Long9697a552015-03-11 08:36:54 +0000448 unittest(rc == -EILSEQ && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
Grant Likelya87fa1d2014-11-03 15:15:35 +0000449 strings[1] = NULL;
450
451 /* of_property_read_string_array() tests */
452 rc = of_property_read_string_array(np, "string-property", strings, 4);
Wang Long9697a552015-03-11 08:36:54 +0000453 unittest(rc == 1, "Incorrect string count; rc=%i\n", rc);
Grant Likelya87fa1d2014-11-03 15:15:35 +0000454 rc = of_property_read_string_array(np, "phandle-list-names", strings, 4);
Wang Long9697a552015-03-11 08:36:54 +0000455 unittest(rc == 3, "Incorrect string count; rc=%i\n", rc);
Grant Likelya87fa1d2014-11-03 15:15:35 +0000456 rc = of_property_read_string_array(np, "unterminated-string", strings, 4);
Wang Long9697a552015-03-11 08:36:54 +0000457 unittest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc);
Grant Likelya87fa1d2014-11-03 15:15:35 +0000458 /* -- An incorrectly formed string should cause a failure */
459 rc = of_property_read_string_array(np, "unterminated-string-list", strings, 4);
Wang Long9697a552015-03-11 08:36:54 +0000460 unittest(rc == -EILSEQ, "unterminated string array; rc=%i\n", rc);
Grant Likelya87fa1d2014-11-03 15:15:35 +0000461 /* -- parsing the correctly formed strings should still work: */
462 strings[2] = NULL;
463 rc = of_property_read_string_array(np, "unterminated-string-list", strings, 2);
Wang Long9697a552015-03-11 08:36:54 +0000464 unittest(rc == 2 && strings[2] == NULL, "of_property_read_string_array() failure; rc=%i\n", rc);
Grant Likelya87fa1d2014-11-03 15:15:35 +0000465 strings[1] = NULL;
466 rc = of_property_read_string_array(np, "phandle-list-names", strings, 1);
Wang Long9697a552015-03-11 08:36:54 +0000467 unittest(rc == 1 && strings[1] == NULL, "Overwrote end of string array; rc=%i, str='%s'\n", rc, strings[1]);
Grant Likely7aff0fe2011-12-12 09:25:58 -0700468}
469
Pantelis Antoniou69843392014-07-04 19:58:47 +0300470#define propcmp(p1, p2) (((p1)->length == (p2)->length) && \
471 (p1)->value && (p2)->value && \
472 !memcmp((p1)->value, (p2)->value, (p1)->length) && \
473 !strcmp((p1)->name, (p2)->name))
Wang Long9697a552015-03-11 08:36:54 +0000474static void __init of_unittest_property_copy(void)
Pantelis Antoniou69843392014-07-04 19:58:47 +0300475{
476#ifdef CONFIG_OF_DYNAMIC
477 struct property p1 = { .name = "p1", .length = 0, .value = "" };
478 struct property p2 = { .name = "p2", .length = 5, .value = "abcd" };
479 struct property *new;
480
481 new = __of_prop_dup(&p1, GFP_KERNEL);
Wang Long9697a552015-03-11 08:36:54 +0000482 unittest(new && propcmp(&p1, new), "empty property didn't copy correctly\n");
Pantelis Antoniou69843392014-07-04 19:58:47 +0300483 kfree(new->value);
484 kfree(new->name);
485 kfree(new);
486
487 new = __of_prop_dup(&p2, GFP_KERNEL);
Wang Long9697a552015-03-11 08:36:54 +0000488 unittest(new && propcmp(&p2, new), "non-empty property didn't copy correctly\n");
Pantelis Antoniou69843392014-07-04 19:58:47 +0300489 kfree(new->value);
490 kfree(new->name);
491 kfree(new);
492#endif
493}
494
Wang Long9697a552015-03-11 08:36:54 +0000495static void __init of_unittest_changeset(void)
Pantelis Antoniou201c9102014-07-04 19:58:49 +0300496{
497#ifdef CONFIG_OF_DYNAMIC
498 struct property *ppadd, padd = { .name = "prop-add", .length = 0, .value = "" };
499 struct property *ppupdate, pupdate = { .name = "prop-update", .length = 5, .value = "abcd" };
500 struct property *ppremove;
Grant Likelye5179582014-11-17 22:31:32 +0000501 struct device_node *n1, *n2, *n21, *nremove, *parent, *np;
Pantelis Antoniou201c9102014-07-04 19:58:49 +0300502 struct of_changeset chgset;
503
Grant Likelye5179582014-11-17 22:31:32 +0000504 n1 = __of_node_dup(NULL, "/testcase-data/changeset/n1");
Wang Long9697a552015-03-11 08:36:54 +0000505 unittest(n1, "testcase setup failure\n");
Grant Likelye5179582014-11-17 22:31:32 +0000506 n2 = __of_node_dup(NULL, "/testcase-data/changeset/n2");
Wang Long9697a552015-03-11 08:36:54 +0000507 unittest(n2, "testcase setup failure\n");
Grant Likelye5179582014-11-17 22:31:32 +0000508 n21 = __of_node_dup(NULL, "%s/%s", "/testcase-data/changeset/n2", "n21");
Wang Long9697a552015-03-11 08:36:54 +0000509 unittest(n21, "testcase setup failure %p\n", n21);
Pantelis Antoniou201c9102014-07-04 19:58:49 +0300510 nremove = of_find_node_by_path("/testcase-data/changeset/node-remove");
Wang Long9697a552015-03-11 08:36:54 +0000511 unittest(nremove, "testcase setup failure\n");
Pantelis Antoniou201c9102014-07-04 19:58:49 +0300512 ppadd = __of_prop_dup(&padd, GFP_KERNEL);
Wang Long9697a552015-03-11 08:36:54 +0000513 unittest(ppadd, "testcase setup failure\n");
Pantelis Antoniou201c9102014-07-04 19:58:49 +0300514 ppupdate = __of_prop_dup(&pupdate, GFP_KERNEL);
Wang Long9697a552015-03-11 08:36:54 +0000515 unittest(ppupdate, "testcase setup failure\n");
Pantelis Antoniou201c9102014-07-04 19:58:49 +0300516 parent = nremove->parent;
517 n1->parent = parent;
518 n2->parent = parent;
519 n21->parent = n2;
520 n2->child = n21;
521 ppremove = of_find_property(parent, "prop-remove", NULL);
Wang Long9697a552015-03-11 08:36:54 +0000522 unittest(ppremove, "failed to find removal prop");
Pantelis Antoniou201c9102014-07-04 19:58:49 +0300523
524 of_changeset_init(&chgset);
Wang Long9697a552015-03-11 08:36:54 +0000525 unittest(!of_changeset_attach_node(&chgset, n1), "fail attach n1\n");
526 unittest(!of_changeset_attach_node(&chgset, n2), "fail attach n2\n");
527 unittest(!of_changeset_detach_node(&chgset, nremove), "fail remove node\n");
528 unittest(!of_changeset_attach_node(&chgset, n21), "fail attach n21\n");
529 unittest(!of_changeset_add_property(&chgset, parent, ppadd), "fail add prop\n");
530 unittest(!of_changeset_update_property(&chgset, parent, ppupdate), "fail update prop\n");
531 unittest(!of_changeset_remove_property(&chgset, parent, ppremove), "fail remove prop\n");
Wang Long9697a552015-03-11 08:36:54 +0000532 unittest(!of_changeset_apply(&chgset), "apply failed\n");
Pantelis Antoniou201c9102014-07-04 19:58:49 +0300533
Grant Likelye5179582014-11-17 22:31:32 +0000534 /* Make sure node names are constructed correctly */
Wang Long9697a552015-03-11 08:36:54 +0000535 unittest((np = of_find_node_by_path("/testcase-data/changeset/n2/n21")),
Grant Likelye5179582014-11-17 22:31:32 +0000536 "'%s' not added\n", n21->full_name);
Markus Elfringc46ca3c2014-12-02 13:54:00 +0100537 of_node_put(np);
Grant Likelye5179582014-11-17 22:31:32 +0000538
Wang Long9697a552015-03-11 08:36:54 +0000539 unittest(!of_changeset_revert(&chgset), "revert failed\n");
Pantelis Antoniou201c9102014-07-04 19:58:49 +0300540
541 of_changeset_destroy(&chgset);
542#endif
543}
544
Wang Long9697a552015-03-11 08:36:54 +0000545static void __init of_unittest_parse_interrupts(void)
Grant Likelya9f10ca2013-10-11 22:04:23 +0100546{
547 struct device_node *np;
548 struct of_phandle_args args;
549 int i, rc;
550
551 np = of_find_node_by_path("/testcase-data/interrupts/interrupts0");
552 if (!np) {
553 pr_err("missing testcase data\n");
554 return;
555 }
556
557 for (i = 0; i < 4; i++) {
558 bool passed = true;
Frank Rowand3db316d2015-03-14 00:02:31 -0700559
Grant Likelya9f10ca2013-10-11 22:04:23 +0100560 args.args_count = 0;
561 rc = of_irq_parse_one(np, i, &args);
562
563 passed &= !rc;
564 passed &= (args.args_count == 1);
565 passed &= (args.args[0] == (i + 1));
566
Wang Long9697a552015-03-11 08:36:54 +0000567 unittest(passed, "index %i - data error on node %s rc=%i\n",
Grant Likelya9f10ca2013-10-11 22:04:23 +0100568 i, args.np->full_name, rc);
569 }
570 of_node_put(np);
571
572 np = of_find_node_by_path("/testcase-data/interrupts/interrupts1");
573 if (!np) {
574 pr_err("missing testcase data\n");
575 return;
576 }
577
578 for (i = 0; i < 4; i++) {
579 bool passed = true;
Frank Rowand3db316d2015-03-14 00:02:31 -0700580
Grant Likelya9f10ca2013-10-11 22:04:23 +0100581 args.args_count = 0;
582 rc = of_irq_parse_one(np, i, &args);
583
584 /* Test the values from tests-phandle.dtsi */
585 switch (i) {
586 case 0:
587 passed &= !rc;
588 passed &= (args.args_count == 1);
589 passed &= (args.args[0] == 9);
590 break;
591 case 1:
592 passed &= !rc;
593 passed &= (args.args_count == 3);
594 passed &= (args.args[0] == 10);
595 passed &= (args.args[1] == 11);
596 passed &= (args.args[2] == 12);
597 break;
598 case 2:
599 passed &= !rc;
600 passed &= (args.args_count == 2);
601 passed &= (args.args[0] == 13);
602 passed &= (args.args[1] == 14);
603 break;
604 case 3:
605 passed &= !rc;
606 passed &= (args.args_count == 2);
607 passed &= (args.args[0] == 15);
608 passed &= (args.args[1] == 16);
609 break;
610 default:
611 passed = false;
612 }
Wang Long9697a552015-03-11 08:36:54 +0000613 unittest(passed, "index %i - data error on node %s rc=%i\n",
Grant Likelya9f10ca2013-10-11 22:04:23 +0100614 i, args.np->full_name, rc);
615 }
616 of_node_put(np);
617}
618
Wang Long9697a552015-03-11 08:36:54 +0000619static void __init of_unittest_parse_interrupts_extended(void)
Grant Likely79d97012013-09-19 16:47:37 -0500620{
621 struct device_node *np;
622 struct of_phandle_args args;
623 int i, rc;
624
625 np = of_find_node_by_path("/testcase-data/interrupts/interrupts-extended0");
626 if (!np) {
627 pr_err("missing testcase data\n");
628 return;
629 }
630
631 for (i = 0; i < 7; i++) {
632 bool passed = true;
Frank Rowand3db316d2015-03-14 00:02:31 -0700633
Grant Likely79d97012013-09-19 16:47:37 -0500634 rc = of_irq_parse_one(np, i, &args);
635
636 /* Test the values from tests-phandle.dtsi */
637 switch (i) {
638 case 0:
639 passed &= !rc;
640 passed &= (args.args_count == 1);
641 passed &= (args.args[0] == 1);
642 break;
643 case 1:
644 passed &= !rc;
645 passed &= (args.args_count == 3);
646 passed &= (args.args[0] == 2);
647 passed &= (args.args[1] == 3);
648 passed &= (args.args[2] == 4);
649 break;
650 case 2:
651 passed &= !rc;
652 passed &= (args.args_count == 2);
653 passed &= (args.args[0] == 5);
654 passed &= (args.args[1] == 6);
655 break;
656 case 3:
657 passed &= !rc;
658 passed &= (args.args_count == 1);
659 passed &= (args.args[0] == 9);
660 break;
661 case 4:
662 passed &= !rc;
663 passed &= (args.args_count == 3);
664 passed &= (args.args[0] == 10);
665 passed &= (args.args[1] == 11);
666 passed &= (args.args[2] == 12);
667 break;
668 case 5:
669 passed &= !rc;
670 passed &= (args.args_count == 2);
671 passed &= (args.args[0] == 13);
672 passed &= (args.args[1] == 14);
673 break;
674 case 6:
675 passed &= !rc;
676 passed &= (args.args_count == 1);
677 passed &= (args.args[0] == 15);
678 break;
679 default:
680 passed = false;
681 }
682
Wang Long9697a552015-03-11 08:36:54 +0000683 unittest(passed, "index %i - data error on node %s rc=%i\n",
Grant Likely79d97012013-09-19 16:47:37 -0500684 i, args.np->full_name, rc);
685 }
686 of_node_put(np);
687}
688
Frank Rowandafaed7a2015-03-14 00:00:36 -0700689static const struct of_device_id match_node_table[] = {
Grant Likely1f42e5d2014-02-18 21:38:55 +0000690 { .data = "A", .name = "name0", }, /* Name alone is lowest priority */
691 { .data = "B", .type = "type1", }, /* followed by type alone */
692
693 { .data = "Ca", .name = "name2", .type = "type1", }, /* followed by both together */
694 { .data = "Cb", .name = "name2", }, /* Only match when type doesn't match */
695 { .data = "Cc", .name = "name2", .type = "type2", },
696
697 { .data = "E", .compatible = "compat3" },
698 { .data = "G", .compatible = "compat2", },
699 { .data = "H", .compatible = "compat2", .name = "name5", },
700 { .data = "I", .compatible = "compat2", .type = "type1", },
701 { .data = "J", .compatible = "compat2", .type = "type1", .name = "name8", },
702 { .data = "K", .compatible = "compat2", .name = "name9", },
703 {}
704};
705
706static struct {
707 const char *path;
708 const char *data;
709} match_node_tests[] = {
710 { .path = "/testcase-data/match-node/name0", .data = "A", },
711 { .path = "/testcase-data/match-node/name1", .data = "B", },
712 { .path = "/testcase-data/match-node/a/name2", .data = "Ca", },
713 { .path = "/testcase-data/match-node/b/name2", .data = "Cb", },
714 { .path = "/testcase-data/match-node/c/name2", .data = "Cc", },
715 { .path = "/testcase-data/match-node/name3", .data = "E", },
716 { .path = "/testcase-data/match-node/name4", .data = "G", },
717 { .path = "/testcase-data/match-node/name5", .data = "H", },
718 { .path = "/testcase-data/match-node/name6", .data = "G", },
719 { .path = "/testcase-data/match-node/name7", .data = "I", },
720 { .path = "/testcase-data/match-node/name8", .data = "J", },
721 { .path = "/testcase-data/match-node/name9", .data = "K", },
722};
723
Wang Long9697a552015-03-11 08:36:54 +0000724static void __init of_unittest_match_node(void)
Grant Likely1f42e5d2014-02-18 21:38:55 +0000725{
726 struct device_node *np;
727 const struct of_device_id *match;
728 int i;
729
730 for (i = 0; i < ARRAY_SIZE(match_node_tests); i++) {
731 np = of_find_node_by_path(match_node_tests[i].path);
732 if (!np) {
Wang Long9697a552015-03-11 08:36:54 +0000733 unittest(0, "missing testcase node %s\n",
Grant Likely1f42e5d2014-02-18 21:38:55 +0000734 match_node_tests[i].path);
735 continue;
736 }
737
738 match = of_match_node(match_node_table, np);
739 if (!match) {
Wang Long9697a552015-03-11 08:36:54 +0000740 unittest(0, "%s didn't match anything\n",
Grant Likely1f42e5d2014-02-18 21:38:55 +0000741 match_node_tests[i].path);
742 continue;
743 }
744
745 if (strcmp(match->data, match_node_tests[i].data) != 0) {
Wang Long9697a552015-03-11 08:36:54 +0000746 unittest(0, "%s got wrong match. expected %s, got %s\n",
Grant Likely1f42e5d2014-02-18 21:38:55 +0000747 match_node_tests[i].path, match_node_tests[i].data,
748 (const char *)match->data);
749 continue;
750 }
Wang Long9697a552015-03-11 08:36:54 +0000751 unittest(1, "passed");
Grant Likely1f42e5d2014-02-18 21:38:55 +0000752 }
753}
754
Grant Likelyd2329fb2016-01-04 13:13:21 +0100755static struct resource test_bus_res = {
756 .start = 0xfffffff8,
757 .end = 0xfffffff9,
758 .flags = IORESOURCE_MEM,
759};
Grant Likely37791b62015-03-27 20:30:04 -0700760static const struct platform_device_info test_bus_info = {
761 .name = "unittest-bus",
Grant Likely851da972014-11-04 13:14:13 +0000762};
Wang Long9697a552015-03-11 08:36:54 +0000763static void __init of_unittest_platform_populate(void)
Rob Herring82c0f582014-04-23 17:57:40 -0500764{
Grant Likely851da972014-11-04 13:14:13 +0000765 int irq, rc;
766 struct device_node *np, *child, *grandchild;
Grant Likely37791b62015-03-27 20:30:04 -0700767 struct platform_device *pdev, *test_bus;
Frank Rowandafaed7a2015-03-14 00:00:36 -0700768 const struct of_device_id match[] = {
Rob Herringfb2caa52014-05-13 10:07:54 -0500769 { .compatible = "test-device", },
770 {}
771 };
Rob Herring82c0f582014-04-23 17:57:40 -0500772
773 np = of_find_node_by_path("/testcase-data");
Kefeng Wang146dedb2016-06-01 14:53:10 +0800774 of_platform_default_populate(np, NULL, NULL);
Rob Herring82c0f582014-04-23 17:57:40 -0500775
776 /* Test that a missing irq domain returns -EPROBE_DEFER */
777 np = of_find_node_by_path("/testcase-data/testcase-device1");
778 pdev = of_find_device_by_node(np);
Wang Long9697a552015-03-11 08:36:54 +0000779 unittest(pdev, "device 1 creation failed\n");
Rob Herring7d1cdc82014-05-13 10:07:29 -0500780
Rob Herring82c0f582014-04-23 17:57:40 -0500781 irq = platform_get_irq(pdev, 0);
Wang Long9697a552015-03-11 08:36:54 +0000782 unittest(irq == -EPROBE_DEFER, "device deferred probe failed - %d\n", irq);
Rob Herring82c0f582014-04-23 17:57:40 -0500783
784 /* Test that a parsing failure does not return -EPROBE_DEFER */
785 np = of_find_node_by_path("/testcase-data/testcase-device2");
786 pdev = of_find_device_by_node(np);
Wang Long9697a552015-03-11 08:36:54 +0000787 unittest(pdev, "device 2 creation failed\n");
Rob Herring82c0f582014-04-23 17:57:40 -0500788 irq = platform_get_irq(pdev, 0);
Wang Long9697a552015-03-11 08:36:54 +0000789 unittest(irq < 0 && irq != -EPROBE_DEFER, "device parsing error failed - %d\n", irq);
Rob Herring82c0f582014-04-23 17:57:40 -0500790
Frank Rowand716e1d42015-03-13 23:57:40 -0700791 np = of_find_node_by_path("/testcase-data/platform-tests");
Grant Likelya2166ca2015-03-29 08:59:58 +0100792 unittest(np, "No testcase data in device tree\n");
Frank Rowand716e1d42015-03-13 23:57:40 -0700793 if (!np)
Rob Herringfb2caa52014-05-13 10:07:54 -0500794 return;
Grant Likely851da972014-11-04 13:14:13 +0000795
Grant Likely37791b62015-03-27 20:30:04 -0700796 test_bus = platform_device_register_full(&test_bus_info);
797 rc = PTR_ERR_OR_ZERO(test_bus);
Grant Likelya2166ca2015-03-29 08:59:58 +0100798 unittest(!rc, "testbus registration failed; rc=%i\n", rc);
Frank Rowand716e1d42015-03-13 23:57:40 -0700799 if (rc)
Grant Likely851da972014-11-04 13:14:13 +0000800 return;
Grant Likely37791b62015-03-27 20:30:04 -0700801 test_bus->dev.of_node = np;
Rob Herringfb2caa52014-05-13 10:07:54 -0500802
Grant Likelyd2329fb2016-01-04 13:13:21 +0100803 /*
804 * Add a dummy resource to the test bus node after it is
805 * registered to catch problems with un-inserted resources. The
806 * DT code doesn't insert the resources, and it has caused the
807 * kernel to oops in the past. This makes sure the same bug
808 * doesn't crop up again.
809 */
810 platform_device_add_resources(test_bus, &test_bus_res, 1);
811
Grant Likely37791b62015-03-27 20:30:04 -0700812 of_platform_populate(np, match, NULL, &test_bus->dev);
Rob Herringfb2caa52014-05-13 10:07:54 -0500813 for_each_child_of_node(np, child) {
Rob Herringfb2caa52014-05-13 10:07:54 -0500814 for_each_child_of_node(child, grandchild)
Wang Long9697a552015-03-11 08:36:54 +0000815 unittest(of_find_device_by_node(grandchild),
Rob Herringfb2caa52014-05-13 10:07:54 -0500816 "Could not create device for node '%s'\n",
817 grandchild->name);
818 }
Grant Likely851da972014-11-04 13:14:13 +0000819
Grant Likely37791b62015-03-27 20:30:04 -0700820 of_platform_depopulate(&test_bus->dev);
Grant Likely851da972014-11-04 13:14:13 +0000821 for_each_child_of_node(np, child) {
822 for_each_child_of_node(child, grandchild)
Wang Long9697a552015-03-11 08:36:54 +0000823 unittest(!of_find_device_by_node(grandchild),
Grant Likely851da972014-11-04 13:14:13 +0000824 "device didn't get destroyed '%s'\n",
825 grandchild->name);
826 }
827
Grant Likely37791b62015-03-27 20:30:04 -0700828 platform_device_unregister(test_bus);
Grant Likely851da972014-11-04 13:14:13 +0000829 of_node_put(np);
Rob Herring82c0f582014-04-23 17:57:40 -0500830}
831
Gaurav Minochaae9304c2014-07-16 23:09:39 -0700832/**
833 * update_node_properties - adds the properties
834 * of np into dup node (present in live tree) and
835 * updates parent of children of np to dup.
836 *
837 * @np: node already present in live tree
838 * @dup: node present in live tree to be updated
839 */
840static void update_node_properties(struct device_node *np,
841 struct device_node *dup)
842{
843 struct property *prop;
844 struct device_node *child;
845
846 for_each_property_of_node(np, prop)
847 of_add_property(dup, prop);
848
849 for_each_child_of_node(np, child)
850 child->parent = dup;
851}
852
853/**
854 * attach_node_and_children - attaches nodes
855 * and its children to live tree
856 *
857 * @np: Node to attach to live tree
858 */
859static int attach_node_and_children(struct device_node *np)
860{
Grant Likely5063e252014-10-03 16:28:27 +0100861 struct device_node *next, *dup, *child;
Gaurav Minocha3ce04b42015-01-10 23:19:51 -0800862 unsigned long flags;
Gaurav Minochaae9304c2014-07-16 23:09:39 -0700863
Grant Likely5063e252014-10-03 16:28:27 +0100864 dup = of_find_node_by_path(np->full_name);
865 if (dup) {
866 update_node_properties(np, dup);
867 return 0;
868 }
Gaurav Minochaae9304c2014-07-16 23:09:39 -0700869
Grant Likely5063e252014-10-03 16:28:27 +0100870 child = np->child;
871 np->child = NULL;
Gaurav Minocha3ce04b42015-01-10 23:19:51 -0800872
873 mutex_lock(&of_mutex);
874 raw_spin_lock_irqsave(&devtree_lock, flags);
875 np->sibling = np->parent->child;
876 np->parent->child = np;
877 of_node_clear_flag(np, OF_DETACHED);
878 raw_spin_unlock_irqrestore(&devtree_lock, flags);
879
880 __of_attach_node_sysfs(np);
881 mutex_unlock(&of_mutex);
882
Grant Likely5063e252014-10-03 16:28:27 +0100883 while (child) {
884 next = child->sibling;
885 attach_node_and_children(child);
886 child = next;
Gaurav Minochaae9304c2014-07-16 23:09:39 -0700887 }
888
889 return 0;
890}
891
892/**
Wang Long9697a552015-03-11 08:36:54 +0000893 * unittest_data_add - Reads, copies data from
Gaurav Minochaae9304c2014-07-16 23:09:39 -0700894 * linked tree and attaches it to the live tree
895 */
Wang Long9697a552015-03-11 08:36:54 +0000896static int __init unittest_data_add(void)
Gaurav Minochaae9304c2014-07-16 23:09:39 -0700897{
Wang Long9697a552015-03-11 08:36:54 +0000898 void *unittest_data;
899 struct device_node *unittest_data_node, *np;
Frank Rowandc8547112015-03-14 00:04:24 -0700900 /*
901 * __dtb_testcases_begin[] and __dtb_testcases_end[] are magically
902 * created by cmd_dt_S_dtb in scripts/Makefile.lib
903 */
Gaurav Minochaae9304c2014-07-16 23:09:39 -0700904 extern uint8_t __dtb_testcases_begin[];
905 extern uint8_t __dtb_testcases_end[];
906 const int size = __dtb_testcases_end - __dtb_testcases_begin;
Grant Likely2eb46da2014-10-02 14:36:46 +0100907 int rc;
Gaurav Minochaae9304c2014-07-16 23:09:39 -0700908
Gaurav Minochab951f9d2014-07-26 12:48:50 -0700909 if (!size) {
Gaurav Minochaae9304c2014-07-16 23:09:39 -0700910 pr_warn("%s: No testcase data to attach; not running tests\n",
911 __func__);
912 return -ENODATA;
913 }
914
915 /* creating copy */
Wang Long9697a552015-03-11 08:36:54 +0000916 unittest_data = kmemdup(__dtb_testcases_begin, size, GFP_KERNEL);
Gaurav Minochaae9304c2014-07-16 23:09:39 -0700917
Wang Long9697a552015-03-11 08:36:54 +0000918 if (!unittest_data) {
919 pr_warn("%s: Failed to allocate memory for unittest_data; "
Gaurav Minochaae9304c2014-07-16 23:09:39 -0700920 "not running tests\n", __func__);
921 return -ENOMEM;
922 }
Gavin Shanc4263232016-05-03 23:22:50 +1000923 of_fdt_unflatten_tree(unittest_data, NULL, &unittest_data_node);
Wang Long9697a552015-03-11 08:36:54 +0000924 if (!unittest_data_node) {
Gaurav Minochab951f9d2014-07-26 12:48:50 -0700925 pr_warn("%s: No tree to attach; not running tests\n", __func__);
926 return -ENODATA;
927 }
Wang Long9697a552015-03-11 08:36:54 +0000928 of_node_set_flag(unittest_data_node, OF_DETACHED);
929 rc = of_resolve_phandles(unittest_data_node);
Grant Likely2eb46da2014-10-02 14:36:46 +0100930 if (rc) {
931 pr_err("%s: Failed to resolve phandles (rc=%i)\n", __func__, rc);
932 return -EINVAL;
933 }
Gaurav Minochab951f9d2014-07-26 12:48:50 -0700934
Grant Likely5063e252014-10-03 16:28:27 +0100935 if (!of_root) {
Wang Long9697a552015-03-11 08:36:54 +0000936 of_root = unittest_data_node;
Gaurav Minochab951f9d2014-07-26 12:48:50 -0700937 for_each_of_allnodes(np)
938 __of_attach_node_sysfs(np);
939 of_aliases = of_find_node_by_path("/aliases");
940 of_chosen = of_find_node_by_path("/chosen");
941 return 0;
942 }
Gaurav Minochaae9304c2014-07-16 23:09:39 -0700943
944 /* attach the sub-tree to live tree */
Wang Long9697a552015-03-11 08:36:54 +0000945 np = unittest_data_node->child;
Grant Likely5063e252014-10-03 16:28:27 +0100946 while (np) {
947 struct device_node *next = np->sibling;
Frank Rowand3db316d2015-03-14 00:02:31 -0700948
Grant Likely5063e252014-10-03 16:28:27 +0100949 np->parent = of_root;
950 attach_node_and_children(np);
951 np = next;
952 }
953 return 0;
Gaurav Minochaae9304c2014-07-16 23:09:39 -0700954}
955
Pantelis Antoniou177d2712014-10-28 22:35:59 +0200956#ifdef CONFIG_OF_OVERLAY
957
Wang Long9697a552015-03-11 08:36:54 +0000958static int unittest_probe(struct platform_device *pdev)
Pantelis Antoniou177d2712014-10-28 22:35:59 +0200959{
960 struct device *dev = &pdev->dev;
961 struct device_node *np = dev->of_node;
962
963 if (np == NULL) {
964 dev_err(dev, "No OF data for device\n");
965 return -EINVAL;
966
967 }
968
969 dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
Pantelis Antoniou6b1271d2014-12-19 14:34:34 +0200970
971 of_platform_populate(np, NULL, NULL, &pdev->dev);
972
Pantelis Antoniou177d2712014-10-28 22:35:59 +0200973 return 0;
974}
975
Wang Long9697a552015-03-11 08:36:54 +0000976static int unittest_remove(struct platform_device *pdev)
Pantelis Antoniou177d2712014-10-28 22:35:59 +0200977{
978 struct device *dev = &pdev->dev;
979 struct device_node *np = dev->of_node;
980
981 dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
982 return 0;
983}
984
Grant Likelya2166ca2015-03-29 08:59:58 +0100985static const struct of_device_id unittest_match[] = {
Wang Long9697a552015-03-11 08:36:54 +0000986 { .compatible = "unittest", },
Pantelis Antoniou177d2712014-10-28 22:35:59 +0200987 {},
988};
Pantelis Antoniou177d2712014-10-28 22:35:59 +0200989
Wang Long9697a552015-03-11 08:36:54 +0000990static struct platform_driver unittest_driver = {
991 .probe = unittest_probe,
992 .remove = unittest_remove,
Pantelis Antoniou177d2712014-10-28 22:35:59 +0200993 .driver = {
Wang Long9697a552015-03-11 08:36:54 +0000994 .name = "unittest",
Wang Long9697a552015-03-11 08:36:54 +0000995 .of_match_table = of_match_ptr(unittest_match),
Pantelis Antoniou177d2712014-10-28 22:35:59 +0200996 },
997};
998
999/* get the platform device instantiated at the path */
1000static struct platform_device *of_path_to_platform_device(const char *path)
1001{
1002 struct device_node *np;
1003 struct platform_device *pdev;
1004
1005 np = of_find_node_by_path(path);
1006 if (np == NULL)
1007 return NULL;
1008
1009 pdev = of_find_device_by_node(np);
1010 of_node_put(np);
1011
1012 return pdev;
1013}
1014
1015/* find out if a platform device exists at that path */
1016static int of_path_platform_device_exists(const char *path)
1017{
1018 struct platform_device *pdev;
1019
1020 pdev = of_path_to_platform_device(path);
1021 platform_device_put(pdev);
1022 return pdev != NULL;
1023}
1024
Arnd Bergmann4252de32015-03-04 20:49:47 +01001025#if IS_BUILTIN(CONFIG_I2C)
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001026
1027/* get the i2c client device instantiated at the path */
1028static struct i2c_client *of_path_to_i2c_client(const char *path)
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001029{
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001030 struct device_node *np;
1031 struct i2c_client *client;
1032
1033 np = of_find_node_by_path(path);
1034 if (np == NULL)
1035 return NULL;
1036
1037 client = of_find_i2c_device_by_node(np);
1038 of_node_put(np);
1039
1040 return client;
1041}
1042
1043/* find out if a i2c client device exists at that path */
1044static int of_path_i2c_client_exists(const char *path)
1045{
1046 struct i2c_client *client;
1047
1048 client = of_path_to_i2c_client(path);
1049 if (client)
1050 put_device(&client->dev);
1051 return client != NULL;
1052}
1053#else
1054static int of_path_i2c_client_exists(const char *path)
1055{
1056 return 0;
1057}
1058#endif
1059
1060enum overlay_type {
1061 PDEV_OVERLAY,
1062 I2C_OVERLAY
1063};
1064
1065static int of_path_device_type_exists(const char *path,
1066 enum overlay_type ovtype)
1067{
1068 switch (ovtype) {
1069 case PDEV_OVERLAY:
1070 return of_path_platform_device_exists(path);
1071 case I2C_OVERLAY:
1072 return of_path_i2c_client_exists(path);
1073 }
1074 return 0;
1075}
1076
Wang Long9697a552015-03-11 08:36:54 +00001077static const char *unittest_path(int nr, enum overlay_type ovtype)
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001078{
1079 const char *base;
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001080 static char buf[256];
1081
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001082 switch (ovtype) {
1083 case PDEV_OVERLAY:
1084 base = "/testcase-data/overlay-node/test-bus";
1085 break;
1086 case I2C_OVERLAY:
1087 base = "/testcase-data/overlay-node/test-bus/i2c-test-bus";
1088 break;
1089 default:
1090 buf[0] = '\0';
1091 return buf;
1092 }
Wang Long9697a552015-03-11 08:36:54 +00001093 snprintf(buf, sizeof(buf) - 1, "%s/test-unittest%d", base, nr);
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001094 buf[sizeof(buf) - 1] = '\0';
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001095 return buf;
1096}
1097
Wang Long9697a552015-03-11 08:36:54 +00001098static int of_unittest_device_exists(int unittest_nr, enum overlay_type ovtype)
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001099{
1100 const char *path;
1101
Wang Long9697a552015-03-11 08:36:54 +00001102 path = unittest_path(unittest_nr, ovtype);
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001103
1104 switch (ovtype) {
1105 case PDEV_OVERLAY:
1106 return of_path_platform_device_exists(path);
1107 case I2C_OVERLAY:
1108 return of_path_i2c_client_exists(path);
1109 }
1110 return 0;
1111}
1112
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001113static const char *overlay_path(int nr)
1114{
1115 static char buf[256];
1116
1117 snprintf(buf, sizeof(buf) - 1,
1118 "/testcase-data/overlay%d", nr);
1119 buf[sizeof(buf) - 1] = '\0';
1120
1121 return buf;
1122}
1123
1124static const char *bus_path = "/testcase-data/overlay-node/test-bus";
1125
Pantelis Antoniou492a22a2015-04-07 22:23:49 +03001126/* it is guaranteed that overlay ids are assigned in sequence */
1127#define MAX_UNITTEST_OVERLAYS 256
1128static unsigned long overlay_id_bits[BITS_TO_LONGS(MAX_UNITTEST_OVERLAYS)];
1129static int overlay_first_id = -1;
1130
1131static void of_unittest_track_overlay(int id)
1132{
1133 if (overlay_first_id < 0)
1134 overlay_first_id = id;
1135 id -= overlay_first_id;
1136
1137 /* we shouldn't need that many */
1138 BUG_ON(id >= MAX_UNITTEST_OVERLAYS);
1139 overlay_id_bits[BIT_WORD(id)] |= BIT_MASK(id);
1140}
1141
1142static void of_unittest_untrack_overlay(int id)
1143{
1144 if (overlay_first_id < 0)
1145 return;
1146 id -= overlay_first_id;
1147 BUG_ON(id >= MAX_UNITTEST_OVERLAYS);
1148 overlay_id_bits[BIT_WORD(id)] &= ~BIT_MASK(id);
1149}
1150
1151static void of_unittest_destroy_tracked_overlays(void)
1152{
1153 int id, ret, defers;
1154
1155 if (overlay_first_id < 0)
1156 return;
1157
1158 /* try until no defers */
1159 do {
1160 defers = 0;
1161 /* remove in reverse order */
1162 for (id = MAX_UNITTEST_OVERLAYS - 1; id >= 0; id--) {
1163 if (!(overlay_id_bits[BIT_WORD(id)] & BIT_MASK(id)))
1164 continue;
1165
1166 ret = of_overlay_destroy(id + overlay_first_id);
Sergey Senozhatsky815d74b2016-03-02 20:24:49 +09001167 if (ret == -ENODEV) {
1168 pr_warn("%s: no overlay to destroy for #%d\n",
1169 __func__, id + overlay_first_id);
1170 continue;
1171 }
Pantelis Antoniou492a22a2015-04-07 22:23:49 +03001172 if (ret != 0) {
1173 defers++;
1174 pr_warn("%s: overlay destroy failed for #%d\n",
1175 __func__, id + overlay_first_id);
1176 continue;
1177 }
1178
1179 overlay_id_bits[BIT_WORD(id)] &= ~BIT_MASK(id);
1180 }
1181 } while (defers > 0);
1182}
1183
Wang Long9697a552015-03-11 08:36:54 +00001184static int of_unittest_apply_overlay(int unittest_nr, int overlay_nr,
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001185 int *overlay_id)
1186{
1187 struct device_node *np = NULL;
1188 int ret, id = -1;
1189
1190 np = of_find_node_by_path(overlay_path(overlay_nr));
1191 if (np == NULL) {
Wang Long9697a552015-03-11 08:36:54 +00001192 unittest(0, "could not find overlay node @\"%s\"\n",
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001193 overlay_path(overlay_nr));
1194 ret = -EINVAL;
1195 goto out;
1196 }
1197
1198 ret = of_overlay_create(np);
1199 if (ret < 0) {
Wang Long9697a552015-03-11 08:36:54 +00001200 unittest(0, "could not create overlay from \"%s\"\n",
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001201 overlay_path(overlay_nr));
1202 goto out;
1203 }
1204 id = ret;
Pantelis Antoniou492a22a2015-04-07 22:23:49 +03001205 of_unittest_track_overlay(id);
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001206
1207 ret = 0;
1208
1209out:
1210 of_node_put(np);
1211
1212 if (overlay_id)
1213 *overlay_id = id;
1214
1215 return ret;
1216}
1217
1218/* apply an overlay while checking before and after states */
Wang Long9697a552015-03-11 08:36:54 +00001219static int of_unittest_apply_overlay_check(int overlay_nr, int unittest_nr,
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001220 int before, int after, enum overlay_type ovtype)
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001221{
1222 int ret;
1223
Wang Long9697a552015-03-11 08:36:54 +00001224 /* unittest device must not be in before state */
1225 if (of_unittest_device_exists(unittest_nr, ovtype) != before) {
1226 unittest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001227 overlay_path(overlay_nr),
Wang Long9697a552015-03-11 08:36:54 +00001228 unittest_path(unittest_nr, ovtype),
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001229 !before ? "enabled" : "disabled");
1230 return -EINVAL;
1231 }
1232
Wang Long9697a552015-03-11 08:36:54 +00001233 ret = of_unittest_apply_overlay(overlay_nr, unittest_nr, NULL);
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001234 if (ret != 0) {
Wang Long9697a552015-03-11 08:36:54 +00001235 /* of_unittest_apply_overlay already called unittest() */
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001236 return ret;
1237 }
1238
Wang Long9697a552015-03-11 08:36:54 +00001239 /* unittest device must be to set to after state */
1240 if (of_unittest_device_exists(unittest_nr, ovtype) != after) {
1241 unittest(0, "overlay @\"%s\" failed to create @\"%s\" %s\n",
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001242 overlay_path(overlay_nr),
Wang Long9697a552015-03-11 08:36:54 +00001243 unittest_path(unittest_nr, ovtype),
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001244 !after ? "enabled" : "disabled");
1245 return -EINVAL;
1246 }
1247
1248 return 0;
1249}
1250
1251/* apply an overlay and then revert it while checking before, after states */
Wang Long9697a552015-03-11 08:36:54 +00001252static int of_unittest_apply_revert_overlay_check(int overlay_nr,
1253 int unittest_nr, int before, int after,
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001254 enum overlay_type ovtype)
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001255{
1256 int ret, ov_id;
1257
Wang Long9697a552015-03-11 08:36:54 +00001258 /* unittest device must be in before state */
1259 if (of_unittest_device_exists(unittest_nr, ovtype) != before) {
1260 unittest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001261 overlay_path(overlay_nr),
Wang Long9697a552015-03-11 08:36:54 +00001262 unittest_path(unittest_nr, ovtype),
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001263 !before ? "enabled" : "disabled");
1264 return -EINVAL;
1265 }
1266
1267 /* apply the overlay */
Wang Long9697a552015-03-11 08:36:54 +00001268 ret = of_unittest_apply_overlay(overlay_nr, unittest_nr, &ov_id);
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001269 if (ret != 0) {
Wang Long9697a552015-03-11 08:36:54 +00001270 /* of_unittest_apply_overlay already called unittest() */
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001271 return ret;
1272 }
1273
Wang Long9697a552015-03-11 08:36:54 +00001274 /* unittest device must be in after state */
1275 if (of_unittest_device_exists(unittest_nr, ovtype) != after) {
1276 unittest(0, "overlay @\"%s\" failed to create @\"%s\" %s\n",
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001277 overlay_path(overlay_nr),
Wang Long9697a552015-03-11 08:36:54 +00001278 unittest_path(unittest_nr, ovtype),
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001279 !after ? "enabled" : "disabled");
1280 return -EINVAL;
1281 }
1282
1283 ret = of_overlay_destroy(ov_id);
1284 if (ret != 0) {
Wang Long9697a552015-03-11 08:36:54 +00001285 unittest(0, "overlay @\"%s\" failed to be destroyed @\"%s\"\n",
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001286 overlay_path(overlay_nr),
Wang Long9697a552015-03-11 08:36:54 +00001287 unittest_path(unittest_nr, ovtype));
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001288 return ret;
1289 }
1290
Wang Long9697a552015-03-11 08:36:54 +00001291 /* unittest device must be again in before state */
1292 if (of_unittest_device_exists(unittest_nr, PDEV_OVERLAY) != before) {
1293 unittest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001294 overlay_path(overlay_nr),
Wang Long9697a552015-03-11 08:36:54 +00001295 unittest_path(unittest_nr, ovtype),
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001296 !before ? "enabled" : "disabled");
1297 return -EINVAL;
1298 }
1299
1300 return 0;
1301}
1302
1303/* test activation of device */
Wang Long9697a552015-03-11 08:36:54 +00001304static void of_unittest_overlay_0(void)
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001305{
1306 int ret;
1307
1308 /* device should enable */
Wang Long9697a552015-03-11 08:36:54 +00001309 ret = of_unittest_apply_overlay_check(0, 0, 0, 1, PDEV_OVERLAY);
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001310 if (ret != 0)
1311 return;
1312
Wang Long9697a552015-03-11 08:36:54 +00001313 unittest(1, "overlay test %d passed\n", 0);
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001314}
1315
1316/* test deactivation of device */
Wang Long9697a552015-03-11 08:36:54 +00001317static void of_unittest_overlay_1(void)
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001318{
1319 int ret;
1320
1321 /* device should disable */
Wang Long9697a552015-03-11 08:36:54 +00001322 ret = of_unittest_apply_overlay_check(1, 1, 1, 0, PDEV_OVERLAY);
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001323 if (ret != 0)
1324 return;
1325
Wang Long9697a552015-03-11 08:36:54 +00001326 unittest(1, "overlay test %d passed\n", 1);
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001327}
1328
1329/* test activation of device */
Wang Long9697a552015-03-11 08:36:54 +00001330static void of_unittest_overlay_2(void)
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001331{
1332 int ret;
1333
1334 /* device should enable */
Wang Long9697a552015-03-11 08:36:54 +00001335 ret = of_unittest_apply_overlay_check(2, 2, 0, 1, PDEV_OVERLAY);
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001336 if (ret != 0)
1337 return;
1338
Wang Long9697a552015-03-11 08:36:54 +00001339 unittest(1, "overlay test %d passed\n", 2);
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001340}
1341
1342/* test deactivation of device */
Wang Long9697a552015-03-11 08:36:54 +00001343static void of_unittest_overlay_3(void)
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001344{
1345 int ret;
1346
1347 /* device should disable */
Wang Long9697a552015-03-11 08:36:54 +00001348 ret = of_unittest_apply_overlay_check(3, 3, 1, 0, PDEV_OVERLAY);
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001349 if (ret != 0)
1350 return;
1351
Wang Long9697a552015-03-11 08:36:54 +00001352 unittest(1, "overlay test %d passed\n", 3);
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001353}
1354
1355/* test activation of a full device node */
Wang Long9697a552015-03-11 08:36:54 +00001356static void of_unittest_overlay_4(void)
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001357{
1358 int ret;
1359
1360 /* device should disable */
Wang Long9697a552015-03-11 08:36:54 +00001361 ret = of_unittest_apply_overlay_check(4, 4, 0, 1, PDEV_OVERLAY);
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001362 if (ret != 0)
1363 return;
1364
Wang Long9697a552015-03-11 08:36:54 +00001365 unittest(1, "overlay test %d passed\n", 4);
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001366}
1367
1368/* test overlay apply/revert sequence */
Wang Long9697a552015-03-11 08:36:54 +00001369static void of_unittest_overlay_5(void)
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001370{
1371 int ret;
1372
1373 /* device should disable */
Wang Long9697a552015-03-11 08:36:54 +00001374 ret = of_unittest_apply_revert_overlay_check(5, 5, 0, 1, PDEV_OVERLAY);
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001375 if (ret != 0)
1376 return;
1377
Wang Long9697a552015-03-11 08:36:54 +00001378 unittest(1, "overlay test %d passed\n", 5);
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001379}
1380
1381/* test overlay application in sequence */
Wang Long9697a552015-03-11 08:36:54 +00001382static void of_unittest_overlay_6(void)
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001383{
1384 struct device_node *np;
1385 int ret, i, ov_id[2];
Wang Long9697a552015-03-11 08:36:54 +00001386 int overlay_nr = 6, unittest_nr = 6;
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001387 int before = 0, after = 1;
1388
Wang Long9697a552015-03-11 08:36:54 +00001389 /* unittest device must be in before state */
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001390 for (i = 0; i < 2; i++) {
Wang Long9697a552015-03-11 08:36:54 +00001391 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY)
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001392 != before) {
Wang Long9697a552015-03-11 08:36:54 +00001393 unittest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001394 overlay_path(overlay_nr + i),
Wang Long9697a552015-03-11 08:36:54 +00001395 unittest_path(unittest_nr + i,
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001396 PDEV_OVERLAY),
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001397 !before ? "enabled" : "disabled");
1398 return;
1399 }
1400 }
1401
1402 /* apply the overlays */
1403 for (i = 0; i < 2; i++) {
1404
1405 np = of_find_node_by_path(overlay_path(overlay_nr + i));
1406 if (np == NULL) {
Wang Long9697a552015-03-11 08:36:54 +00001407 unittest(0, "could not find overlay node @\"%s\"\n",
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001408 overlay_path(overlay_nr + i));
1409 return;
1410 }
1411
1412 ret = of_overlay_create(np);
1413 if (ret < 0) {
Wang Long9697a552015-03-11 08:36:54 +00001414 unittest(0, "could not create overlay from \"%s\"\n",
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001415 overlay_path(overlay_nr + i));
1416 return;
1417 }
1418 ov_id[i] = ret;
Pantelis Antoniou492a22a2015-04-07 22:23:49 +03001419 of_unittest_track_overlay(ov_id[i]);
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001420 }
1421
1422 for (i = 0; i < 2; i++) {
Wang Long9697a552015-03-11 08:36:54 +00001423 /* unittest device must be in after state */
1424 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY)
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001425 != after) {
Wang Long9697a552015-03-11 08:36:54 +00001426 unittest(0, "overlay @\"%s\" failed @\"%s\" %s\n",
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001427 overlay_path(overlay_nr + i),
Wang Long9697a552015-03-11 08:36:54 +00001428 unittest_path(unittest_nr + i,
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001429 PDEV_OVERLAY),
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001430 !after ? "enabled" : "disabled");
1431 return;
1432 }
1433 }
1434
1435 for (i = 1; i >= 0; i--) {
1436 ret = of_overlay_destroy(ov_id[i]);
1437 if (ret != 0) {
Wang Long9697a552015-03-11 08:36:54 +00001438 unittest(0, "overlay @\"%s\" failed destroy @\"%s\"\n",
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001439 overlay_path(overlay_nr + i),
Wang Long9697a552015-03-11 08:36:54 +00001440 unittest_path(unittest_nr + i,
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001441 PDEV_OVERLAY));
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001442 return;
1443 }
Pantelis Antoniou492a22a2015-04-07 22:23:49 +03001444 of_unittest_untrack_overlay(ov_id[i]);
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001445 }
1446
1447 for (i = 0; i < 2; i++) {
Wang Long9697a552015-03-11 08:36:54 +00001448 /* unittest device must be again in before state */
1449 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY)
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001450 != before) {
Wang Long9697a552015-03-11 08:36:54 +00001451 unittest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001452 overlay_path(overlay_nr + i),
Wang Long9697a552015-03-11 08:36:54 +00001453 unittest_path(unittest_nr + i,
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001454 PDEV_OVERLAY),
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001455 !before ? "enabled" : "disabled");
1456 return;
1457 }
1458 }
1459
Wang Long9697a552015-03-11 08:36:54 +00001460 unittest(1, "overlay test %d passed\n", 6);
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001461}
1462
1463/* test overlay application in sequence */
Wang Long9697a552015-03-11 08:36:54 +00001464static void of_unittest_overlay_8(void)
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001465{
1466 struct device_node *np;
1467 int ret, i, ov_id[2];
Wang Long9697a552015-03-11 08:36:54 +00001468 int overlay_nr = 8, unittest_nr = 8;
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001469
1470 /* we don't care about device state in this test */
1471
1472 /* apply the overlays */
1473 for (i = 0; i < 2; i++) {
1474
1475 np = of_find_node_by_path(overlay_path(overlay_nr + i));
1476 if (np == NULL) {
Wang Long9697a552015-03-11 08:36:54 +00001477 unittest(0, "could not find overlay node @\"%s\"\n",
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001478 overlay_path(overlay_nr + i));
1479 return;
1480 }
1481
1482 ret = of_overlay_create(np);
1483 if (ret < 0) {
Wang Long9697a552015-03-11 08:36:54 +00001484 unittest(0, "could not create overlay from \"%s\"\n",
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001485 overlay_path(overlay_nr + i));
1486 return;
1487 }
1488 ov_id[i] = ret;
Pantelis Antoniou492a22a2015-04-07 22:23:49 +03001489 of_unittest_track_overlay(ov_id[i]);
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001490 }
1491
1492 /* now try to remove first overlay (it should fail) */
1493 ret = of_overlay_destroy(ov_id[0]);
1494 if (ret == 0) {
Wang Long9697a552015-03-11 08:36:54 +00001495 unittest(0, "overlay @\"%s\" was destroyed @\"%s\"\n",
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001496 overlay_path(overlay_nr + 0),
Wang Long9697a552015-03-11 08:36:54 +00001497 unittest_path(unittest_nr,
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001498 PDEV_OVERLAY));
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001499 return;
1500 }
1501
1502 /* removing them in order should work */
1503 for (i = 1; i >= 0; i--) {
1504 ret = of_overlay_destroy(ov_id[i]);
1505 if (ret != 0) {
Wang Long9697a552015-03-11 08:36:54 +00001506 unittest(0, "overlay @\"%s\" not destroyed @\"%s\"\n",
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001507 overlay_path(overlay_nr + i),
Wang Long9697a552015-03-11 08:36:54 +00001508 unittest_path(unittest_nr,
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001509 PDEV_OVERLAY));
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001510 return;
1511 }
Pantelis Antoniou492a22a2015-04-07 22:23:49 +03001512 of_unittest_untrack_overlay(ov_id[i]);
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001513 }
1514
Wang Long9697a552015-03-11 08:36:54 +00001515 unittest(1, "overlay test %d passed\n", 8);
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001516}
1517
Pantelis Antoniou6b1271d2014-12-19 14:34:34 +02001518/* test insertion of a bus with parent devices */
Wang Long9697a552015-03-11 08:36:54 +00001519static void of_unittest_overlay_10(void)
Pantelis Antoniou6b1271d2014-12-19 14:34:34 +02001520{
1521 int ret;
1522 char *child_path;
1523
1524 /* device should disable */
Wang Long9697a552015-03-11 08:36:54 +00001525 ret = of_unittest_apply_overlay_check(10, 10, 0, 1, PDEV_OVERLAY);
1526 if (unittest(ret == 0,
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001527 "overlay test %d failed; overlay application\n", 10))
Pantelis Antoniou6b1271d2014-12-19 14:34:34 +02001528 return;
1529
Wang Long9697a552015-03-11 08:36:54 +00001530 child_path = kasprintf(GFP_KERNEL, "%s/test-unittest101",
1531 unittest_path(10, PDEV_OVERLAY));
1532 if (unittest(child_path, "overlay test %d failed; kasprintf\n", 10))
Pantelis Antoniou6b1271d2014-12-19 14:34:34 +02001533 return;
1534
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001535 ret = of_path_device_type_exists(child_path, PDEV_OVERLAY);
Pantelis Antoniou6b1271d2014-12-19 14:34:34 +02001536 kfree(child_path);
Wang Long9697a552015-03-11 08:36:54 +00001537 if (unittest(ret, "overlay test %d failed; no child device\n", 10))
Pantelis Antoniou6b1271d2014-12-19 14:34:34 +02001538 return;
1539}
1540
1541/* test insertion of a bus with parent devices (and revert) */
Wang Long9697a552015-03-11 08:36:54 +00001542static void of_unittest_overlay_11(void)
Pantelis Antoniou6b1271d2014-12-19 14:34:34 +02001543{
1544 int ret;
1545
1546 /* device should disable */
Wang Long9697a552015-03-11 08:36:54 +00001547 ret = of_unittest_apply_revert_overlay_check(11, 11, 0, 1,
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001548 PDEV_OVERLAY);
Wang Long9697a552015-03-11 08:36:54 +00001549 if (unittest(ret == 0,
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001550 "overlay test %d failed; overlay application\n", 11))
Pantelis Antoniou6b1271d2014-12-19 14:34:34 +02001551 return;
1552}
1553
Arnd Bergmann4252de32015-03-04 20:49:47 +01001554#if IS_BUILTIN(CONFIG_I2C) && IS_ENABLED(CONFIG_OF_OVERLAY)
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001555
Wang Long9697a552015-03-11 08:36:54 +00001556struct unittest_i2c_bus_data {
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001557 struct platform_device *pdev;
1558 struct i2c_adapter adap;
1559};
1560
Wang Long9697a552015-03-11 08:36:54 +00001561static int unittest_i2c_master_xfer(struct i2c_adapter *adap,
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001562 struct i2c_msg *msgs, int num)
1563{
Wang Long9697a552015-03-11 08:36:54 +00001564 struct unittest_i2c_bus_data *std = i2c_get_adapdata(adap);
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001565
1566 (void)std;
1567
1568 return num;
1569}
1570
Wang Long9697a552015-03-11 08:36:54 +00001571static u32 unittest_i2c_functionality(struct i2c_adapter *adap)
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001572{
1573 return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
1574}
1575
Wang Long9697a552015-03-11 08:36:54 +00001576static const struct i2c_algorithm unittest_i2c_algo = {
1577 .master_xfer = unittest_i2c_master_xfer,
1578 .functionality = unittest_i2c_functionality,
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001579};
1580
Wang Long9697a552015-03-11 08:36:54 +00001581static int unittest_i2c_bus_probe(struct platform_device *pdev)
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001582{
1583 struct device *dev = &pdev->dev;
1584 struct device_node *np = dev->of_node;
Wang Long9697a552015-03-11 08:36:54 +00001585 struct unittest_i2c_bus_data *std;
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001586 struct i2c_adapter *adap;
1587 int ret;
1588
1589 if (np == NULL) {
1590 dev_err(dev, "No OF data for device\n");
1591 return -EINVAL;
1592
1593 }
1594
1595 dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
1596
1597 std = devm_kzalloc(dev, sizeof(*std), GFP_KERNEL);
1598 if (!std) {
Wang Long9697a552015-03-11 08:36:54 +00001599 dev_err(dev, "Failed to allocate unittest i2c data\n");
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001600 return -ENOMEM;
1601 }
1602
1603 /* link them together */
1604 std->pdev = pdev;
1605 platform_set_drvdata(pdev, std);
1606
1607 adap = &std->adap;
1608 i2c_set_adapdata(adap, std);
1609 adap->nr = -1;
1610 strlcpy(adap->name, pdev->name, sizeof(adap->name));
1611 adap->class = I2C_CLASS_DEPRECATED;
Wang Long9697a552015-03-11 08:36:54 +00001612 adap->algo = &unittest_i2c_algo;
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001613 adap->dev.parent = dev;
1614 adap->dev.of_node = dev->of_node;
1615 adap->timeout = 5 * HZ;
1616 adap->retries = 3;
1617
1618 ret = i2c_add_numbered_adapter(adap);
1619 if (ret != 0) {
1620 dev_err(dev, "Failed to add I2C adapter\n");
1621 return ret;
1622 }
1623
1624 return 0;
1625}
1626
Wang Long9697a552015-03-11 08:36:54 +00001627static int unittest_i2c_bus_remove(struct platform_device *pdev)
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001628{
1629 struct device *dev = &pdev->dev;
1630 struct device_node *np = dev->of_node;
Wang Long9697a552015-03-11 08:36:54 +00001631 struct unittest_i2c_bus_data *std = platform_get_drvdata(pdev);
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001632
1633 dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
1634 i2c_del_adapter(&std->adap);
1635
1636 return 0;
1637}
1638
Grant Likelya2166ca2015-03-29 08:59:58 +01001639static const struct of_device_id unittest_i2c_bus_match[] = {
Wang Long9697a552015-03-11 08:36:54 +00001640 { .compatible = "unittest-i2c-bus", },
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001641 {},
1642};
1643
Wang Long9697a552015-03-11 08:36:54 +00001644static struct platform_driver unittest_i2c_bus_driver = {
1645 .probe = unittest_i2c_bus_probe,
1646 .remove = unittest_i2c_bus_remove,
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001647 .driver = {
Wang Long9697a552015-03-11 08:36:54 +00001648 .name = "unittest-i2c-bus",
1649 .of_match_table = of_match_ptr(unittest_i2c_bus_match),
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001650 },
1651};
1652
Wang Long9697a552015-03-11 08:36:54 +00001653static int unittest_i2c_dev_probe(struct i2c_client *client,
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001654 const struct i2c_device_id *id)
1655{
1656 struct device *dev = &client->dev;
1657 struct device_node *np = client->dev.of_node;
1658
1659 if (!np) {
1660 dev_err(dev, "No OF node\n");
1661 return -EINVAL;
1662 }
1663
1664 dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
1665
1666 return 0;
1667};
1668
Wang Long9697a552015-03-11 08:36:54 +00001669static int unittest_i2c_dev_remove(struct i2c_client *client)
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001670{
1671 struct device *dev = &client->dev;
1672 struct device_node *np = client->dev.of_node;
1673
1674 dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
1675 return 0;
1676}
1677
Wang Long9697a552015-03-11 08:36:54 +00001678static const struct i2c_device_id unittest_i2c_dev_id[] = {
1679 { .name = "unittest-i2c-dev" },
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001680 { }
1681};
1682
Wang Long9697a552015-03-11 08:36:54 +00001683static struct i2c_driver unittest_i2c_dev_driver = {
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001684 .driver = {
Wang Long9697a552015-03-11 08:36:54 +00001685 .name = "unittest-i2c-dev",
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001686 },
Wang Long9697a552015-03-11 08:36:54 +00001687 .probe = unittest_i2c_dev_probe,
1688 .remove = unittest_i2c_dev_remove,
1689 .id_table = unittest_i2c_dev_id,
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001690};
1691
Arnd Bergmann4252de32015-03-04 20:49:47 +01001692#if IS_BUILTIN(CONFIG_I2C_MUX)
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001693
Peter Rosinb6e3b712016-04-20 08:42:47 +02001694static int unittest_i2c_mux_select_chan(struct i2c_mux_core *muxc, u32 chan)
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001695{
1696 return 0;
1697}
1698
Wang Long9697a552015-03-11 08:36:54 +00001699static int unittest_i2c_mux_probe(struct i2c_client *client,
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001700 const struct i2c_device_id *id)
1701{
Peter Rosinb6e3b712016-04-20 08:42:47 +02001702 int ret, i, nchans;
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001703 struct device *dev = &client->dev;
1704 struct i2c_adapter *adap = to_i2c_adapter(dev->parent);
1705 struct device_node *np = client->dev.of_node, *child;
Peter Rosinb6e3b712016-04-20 08:42:47 +02001706 struct i2c_mux_core *muxc;
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001707 u32 reg, max_reg;
1708
1709 dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
1710
1711 if (!np) {
1712 dev_err(dev, "No OF node\n");
1713 return -EINVAL;
1714 }
1715
1716 max_reg = (u32)-1;
1717 for_each_child_of_node(np, child) {
1718 ret = of_property_read_u32(child, "reg", &reg);
1719 if (ret)
1720 continue;
1721 if (max_reg == (u32)-1 || reg > max_reg)
1722 max_reg = reg;
1723 }
1724 nchans = max_reg == (u32)-1 ? 0 : max_reg + 1;
1725 if (nchans == 0) {
1726 dev_err(dev, "No channels\n");
1727 return -EINVAL;
1728 }
1729
Peter Rosinb6e3b712016-04-20 08:42:47 +02001730 muxc = i2c_mux_alloc(adap, dev, nchans, 0, 0,
1731 unittest_i2c_mux_select_chan, NULL);
1732 if (!muxc)
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001733 return -ENOMEM;
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001734 for (i = 0; i < nchans; i++) {
Peter Rosinb6e3b712016-04-20 08:42:47 +02001735 ret = i2c_mux_add_adapter(muxc, 0, i, 0);
1736 if (ret) {
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001737 dev_err(dev, "Failed to register mux #%d\n", i);
Peter Rosinb6e3b712016-04-20 08:42:47 +02001738 i2c_mux_del_adapters(muxc);
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001739 return -ENODEV;
1740 }
1741 }
1742
Peter Rosinb6e3b712016-04-20 08:42:47 +02001743 i2c_set_clientdata(client, muxc);
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001744
1745 return 0;
1746};
1747
Wang Long9697a552015-03-11 08:36:54 +00001748static int unittest_i2c_mux_remove(struct i2c_client *client)
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001749{
1750 struct device *dev = &client->dev;
1751 struct device_node *np = client->dev.of_node;
Peter Rosinb6e3b712016-04-20 08:42:47 +02001752 struct i2c_mux_core *muxc = i2c_get_clientdata(client);
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001753
1754 dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
Peter Rosinb6e3b712016-04-20 08:42:47 +02001755 i2c_mux_del_adapters(muxc);
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001756 return 0;
1757}
1758
Wang Long9697a552015-03-11 08:36:54 +00001759static const struct i2c_device_id unittest_i2c_mux_id[] = {
1760 { .name = "unittest-i2c-mux" },
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001761 { }
1762};
1763
Wang Long9697a552015-03-11 08:36:54 +00001764static struct i2c_driver unittest_i2c_mux_driver = {
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001765 .driver = {
Wang Long9697a552015-03-11 08:36:54 +00001766 .name = "unittest-i2c-mux",
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001767 },
Wang Long9697a552015-03-11 08:36:54 +00001768 .probe = unittest_i2c_mux_probe,
1769 .remove = unittest_i2c_mux_remove,
1770 .id_table = unittest_i2c_mux_id,
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001771};
1772
1773#endif
1774
Wang Long9697a552015-03-11 08:36:54 +00001775static int of_unittest_overlay_i2c_init(void)
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001776{
1777 int ret;
1778
Wang Long9697a552015-03-11 08:36:54 +00001779 ret = i2c_add_driver(&unittest_i2c_dev_driver);
1780 if (unittest(ret == 0,
1781 "could not register unittest i2c device driver\n"))
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001782 return ret;
1783
Wang Long9697a552015-03-11 08:36:54 +00001784 ret = platform_driver_register(&unittest_i2c_bus_driver);
1785 if (unittest(ret == 0,
1786 "could not register unittest i2c bus driver\n"))
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001787 return ret;
1788
Arnd Bergmann4252de32015-03-04 20:49:47 +01001789#if IS_BUILTIN(CONFIG_I2C_MUX)
Wang Long9697a552015-03-11 08:36:54 +00001790 ret = i2c_add_driver(&unittest_i2c_mux_driver);
1791 if (unittest(ret == 0,
1792 "could not register unittest i2c mux driver\n"))
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001793 return ret;
1794#endif
1795
1796 return 0;
1797}
1798
Wang Long9697a552015-03-11 08:36:54 +00001799static void of_unittest_overlay_i2c_cleanup(void)
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001800{
Arnd Bergmann4252de32015-03-04 20:49:47 +01001801#if IS_BUILTIN(CONFIG_I2C_MUX)
Wang Long9697a552015-03-11 08:36:54 +00001802 i2c_del_driver(&unittest_i2c_mux_driver);
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001803#endif
Wang Long9697a552015-03-11 08:36:54 +00001804 platform_driver_unregister(&unittest_i2c_bus_driver);
1805 i2c_del_driver(&unittest_i2c_dev_driver);
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001806}
1807
Wang Long9697a552015-03-11 08:36:54 +00001808static void of_unittest_overlay_i2c_12(void)
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001809{
1810 int ret;
1811
1812 /* device should enable */
Wang Long9697a552015-03-11 08:36:54 +00001813 ret = of_unittest_apply_overlay_check(12, 12, 0, 1, I2C_OVERLAY);
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001814 if (ret != 0)
1815 return;
1816
Wang Long9697a552015-03-11 08:36:54 +00001817 unittest(1, "overlay test %d passed\n", 12);
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001818}
1819
1820/* test deactivation of device */
Wang Long9697a552015-03-11 08:36:54 +00001821static void of_unittest_overlay_i2c_13(void)
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001822{
1823 int ret;
1824
1825 /* device should disable */
Wang Long9697a552015-03-11 08:36:54 +00001826 ret = of_unittest_apply_overlay_check(13, 13, 1, 0, I2C_OVERLAY);
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001827 if (ret != 0)
1828 return;
1829
Wang Long9697a552015-03-11 08:36:54 +00001830 unittest(1, "overlay test %d passed\n", 13);
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001831}
1832
1833/* just check for i2c mux existence */
Wang Long9697a552015-03-11 08:36:54 +00001834static void of_unittest_overlay_i2c_14(void)
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001835{
1836}
1837
Wang Long9697a552015-03-11 08:36:54 +00001838static void of_unittest_overlay_i2c_15(void)
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001839{
1840 int ret;
1841
1842 /* device should enable */
Wang Long9697a552015-03-11 08:36:54 +00001843 ret = of_unittest_apply_overlay_check(16, 15, 0, 1, I2C_OVERLAY);
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001844 if (ret != 0)
1845 return;
1846
Wang Long9697a552015-03-11 08:36:54 +00001847 unittest(1, "overlay test %d passed\n", 15);
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001848}
1849
1850#else
1851
Wang Long9697a552015-03-11 08:36:54 +00001852static inline void of_unittest_overlay_i2c_14(void) { }
1853static inline void of_unittest_overlay_i2c_15(void) { }
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001854
1855#endif
1856
Wang Long9697a552015-03-11 08:36:54 +00001857static void __init of_unittest_overlay(void)
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001858{
1859 struct device_node *bus_np = NULL;
1860 int ret;
1861
Wang Long9697a552015-03-11 08:36:54 +00001862 ret = platform_driver_register(&unittest_driver);
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001863 if (ret != 0) {
Wang Long9697a552015-03-11 08:36:54 +00001864 unittest(0, "could not register unittest driver\n");
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001865 goto out;
1866 }
1867
1868 bus_np = of_find_node_by_path(bus_path);
1869 if (bus_np == NULL) {
Wang Long9697a552015-03-11 08:36:54 +00001870 unittest(0, "could not find bus_path \"%s\"\n", bus_path);
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001871 goto out;
1872 }
1873
Kefeng Wang146dedb2016-06-01 14:53:10 +08001874 ret = of_platform_default_populate(bus_np, NULL, NULL);
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001875 if (ret != 0) {
Wang Long9697a552015-03-11 08:36:54 +00001876 unittest(0, "could not populate bus @ \"%s\"\n", bus_path);
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001877 goto out;
1878 }
1879
Wang Long9697a552015-03-11 08:36:54 +00001880 if (!of_unittest_device_exists(100, PDEV_OVERLAY)) {
1881 unittest(0, "could not find unittest0 @ \"%s\"\n",
1882 unittest_path(100, PDEV_OVERLAY));
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001883 goto out;
1884 }
1885
Wang Long9697a552015-03-11 08:36:54 +00001886 if (of_unittest_device_exists(101, PDEV_OVERLAY)) {
1887 unittest(0, "unittest1 @ \"%s\" should not exist\n",
1888 unittest_path(101, PDEV_OVERLAY));
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001889 goto out;
1890 }
1891
Wang Long9697a552015-03-11 08:36:54 +00001892 unittest(1, "basic infrastructure of overlays passed");
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001893
1894 /* tests in sequence */
Wang Long9697a552015-03-11 08:36:54 +00001895 of_unittest_overlay_0();
1896 of_unittest_overlay_1();
1897 of_unittest_overlay_2();
1898 of_unittest_overlay_3();
1899 of_unittest_overlay_4();
1900 of_unittest_overlay_5();
1901 of_unittest_overlay_6();
1902 of_unittest_overlay_8();
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001903
Wang Long9697a552015-03-11 08:36:54 +00001904 of_unittest_overlay_10();
1905 of_unittest_overlay_11();
Pantelis Antoniou6b1271d2014-12-19 14:34:34 +02001906
Arnd Bergmann4252de32015-03-04 20:49:47 +01001907#if IS_BUILTIN(CONFIG_I2C)
Wang Long9697a552015-03-11 08:36:54 +00001908 if (unittest(of_unittest_overlay_i2c_init() == 0, "i2c init failed\n"))
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001909 goto out;
1910
Wang Long9697a552015-03-11 08:36:54 +00001911 of_unittest_overlay_i2c_12();
1912 of_unittest_overlay_i2c_13();
1913 of_unittest_overlay_i2c_14();
1914 of_unittest_overlay_i2c_15();
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001915
Wang Long9697a552015-03-11 08:36:54 +00001916 of_unittest_overlay_i2c_cleanup();
Pantelis Antonioud5e75502015-01-12 19:02:49 +02001917#endif
1918
Pantelis Antoniou492a22a2015-04-07 22:23:49 +03001919 of_unittest_destroy_tracked_overlays();
1920
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001921out:
1922 of_node_put(bus_np);
1923}
1924
1925#else
Wang Long9697a552015-03-11 08:36:54 +00001926static inline void __init of_unittest_overlay(void) { }
Pantelis Antoniou177d2712014-10-28 22:35:59 +02001927#endif
1928
Wang Long9697a552015-03-11 08:36:54 +00001929static int __init of_unittest(void)
Grant Likely53a42092011-12-12 09:25:57 -07001930{
1931 struct device_node *np;
Gaurav Minochaae9304c2014-07-16 23:09:39 -07001932 int res;
1933
Wang Long9697a552015-03-11 08:36:54 +00001934 /* adding data for unittest */
1935 res = unittest_data_add();
Gaurav Minochaae9304c2014-07-16 23:09:39 -07001936 if (res)
1937 return res;
Grant Likely788ec2f2014-11-19 17:13:44 +00001938 if (!of_aliases)
1939 of_aliases = of_find_node_by_path("/aliases");
Grant Likely53a42092011-12-12 09:25:57 -07001940
1941 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
1942 if (!np) {
1943 pr_info("No testcase data in device tree; not running tests\n");
1944 return 0;
1945 }
1946 of_node_put(np);
1947
Wang Long9697a552015-03-11 08:36:54 +00001948 pr_info("start of unittest - you will see error messages\n");
1949 of_unittest_check_tree_linkage();
1950 of_unittest_check_phandles();
1951 of_unittest_find_node_by_name();
1952 of_unittest_dynamic();
1953 of_unittest_parse_phandle_with_args();
1954 of_unittest_property_string();
1955 of_unittest_property_copy();
1956 of_unittest_changeset();
1957 of_unittest_parse_interrupts();
1958 of_unittest_parse_interrupts_extended();
1959 of_unittest_match_node();
1960 of_unittest_platform_populate();
1961 of_unittest_overlay();
Gaurav Minochaae9304c2014-07-16 23:09:39 -07001962
Grant Likelyf2051d62014-10-01 17:40:22 +01001963 /* Double check linkage after removing testcase data */
Wang Long9697a552015-03-11 08:36:54 +00001964 of_unittest_check_tree_linkage();
Grant Likelyf2051d62014-10-01 17:40:22 +01001965
Wang Long9697a552015-03-11 08:36:54 +00001966 pr_info("end of unittest - %i passed, %i failed\n",
1967 unittest_results.passed, unittest_results.failed);
Grant Likelyf2051d62014-10-01 17:40:22 +01001968
Grant Likely53a42092011-12-12 09:25:57 -07001969 return 0;
1970}
Wang Long9697a552015-03-11 08:36:54 +00001971late_initcall(of_unittest);