gpio.c 20 KB

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  1. // SPDX-License-Identifier: GPL-2.0+
  2. /*
  3. * Copyright (C) 2013 Google, Inc
  4. */
  5. #include <common.h>
  6. #include <fdtdec.h>
  7. #include <dm.h>
  8. #include <log.h>
  9. #include <malloc.h>
  10. #include <acpi/acpi_device.h>
  11. #include <asm/gpio.h>
  12. #include <dm/device-internal.h>
  13. #include <dm/root.h>
  14. #include <dm/test.h>
  15. #include <dm/util.h>
  16. #include <test/test.h>
  17. #include <test/ut.h>
  18. /* Test that sandbox GPIOs work correctly */
  19. static int dm_test_gpio(struct unit_test_state *uts)
  20. {
  21. unsigned int offset, gpio;
  22. struct dm_gpio_ops *ops;
  23. struct udevice *dev;
  24. struct gpio_desc *desc;
  25. const char *name;
  26. int offset_count;
  27. char buf[80];
  28. /*
  29. * We expect to get 4 banks. One is anonymous (just numbered) and
  30. * comes from platdata. The other are named a (20 gpios),
  31. * b (10 gpios) and c (10 gpios) and come from the device tree. See
  32. * test/dm/test.dts.
  33. */
  34. ut_assertok(gpio_lookup_name("b4", &dev, &offset, &gpio));
  35. ut_asserteq_str(dev->name, "extra-gpios");
  36. ut_asserteq(4, offset);
  37. ut_asserteq(CONFIG_SANDBOX_GPIO_COUNT + 20 + 4, gpio);
  38. name = gpio_get_bank_info(dev, &offset_count);
  39. ut_asserteq_str("b", name);
  40. ut_asserteq(10, offset_count);
  41. /* Get the operations for this device */
  42. ops = gpio_get_ops(dev);
  43. ut_assert(ops->get_function);
  44. /* Cannot get a value until it is reserved */
  45. ut_asserteq(-EBUSY, gpio_get_value(gpio + 1));
  46. /*
  47. * Now some tests that use the 'sandbox' back door. All GPIOs
  48. * should default to input, include b4 that we are using here.
  49. */
  50. ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf)));
  51. ut_asserteq_str("b4: input: 0 [ ]", buf);
  52. /* Change it to an output */
  53. sandbox_gpio_set_direction(dev, offset, 1);
  54. ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf)));
  55. ut_asserteq_str("b4: output: 0 [ ]", buf);
  56. sandbox_gpio_set_value(dev, offset, 1);
  57. ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf)));
  58. ut_asserteq_str("b4: output: 1 [ ]", buf);
  59. ut_assertok(gpio_request(gpio, "testing"));
  60. ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf)));
  61. ut_asserteq_str("b4: output: 1 [x] testing", buf);
  62. /* Change the value a bit */
  63. ut_asserteq(1, ops->get_value(dev, offset));
  64. ut_assertok(ops->set_value(dev, offset, 0));
  65. ut_asserteq(0, ops->get_value(dev, offset));
  66. ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf)));
  67. ut_asserteq_str("b4: output: 0 [x] testing", buf);
  68. ut_assertok(ops->set_value(dev, offset, 1));
  69. ut_asserteq(1, ops->get_value(dev, offset));
  70. /* Make it an open drain output, and reset it */
  71. ut_asserteq(GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE,
  72. sandbox_gpio_get_dir_flags(dev, offset));
  73. ut_assertok(ops->set_dir_flags(dev, offset,
  74. GPIOD_IS_OUT | GPIOD_OPEN_DRAIN));
  75. ut_asserteq(GPIOD_IS_OUT | GPIOD_OPEN_DRAIN,
  76. sandbox_gpio_get_dir_flags(dev, offset));
  77. ut_assertok(ops->set_dir_flags(dev, offset,
  78. GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE));
  79. ut_asserteq(GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE,
  80. sandbox_gpio_get_dir_flags(dev, offset));
  81. /* Make it an input */
  82. ut_assertok(ops->direction_input(dev, offset));
  83. ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf)));
  84. ut_asserteq_str("b4: input: 1 [x] testing", buf);
  85. sandbox_gpio_set_value(dev, offset, 0);
  86. ut_asserteq(0, sandbox_gpio_get_value(dev, offset));
  87. ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf)));
  88. ut_asserteq_str("b4: input: 0 [x] testing", buf);
  89. ut_assertok(gpio_free(gpio));
  90. ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf)));
  91. ut_asserteq_str("b4: input: 0 [ ]", buf);
  92. /* Check the 'a' bank also */
  93. ut_assertok(gpio_lookup_name("a15", &dev, &offset, &gpio));
  94. ut_asserteq_str(dev->name, "base-gpios");
  95. ut_asserteq(15, offset);
  96. ut_asserteq(CONFIG_SANDBOX_GPIO_COUNT + 15, gpio);
  97. name = gpio_get_bank_info(dev, &offset_count);
  98. ut_asserteq_str("a", name);
  99. ut_asserteq(20, offset_count);
  100. /* add gpio hog tests */
  101. ut_assertok(gpio_hog_lookup_name("hog_input_active_low", &desc));
  102. ut_asserteq(GPIOD_IS_IN | GPIOD_ACTIVE_LOW, desc->flags);
  103. ut_asserteq(10, desc->offset);
  104. ut_asserteq(1, dm_gpio_get_value(desc));
  105. ut_assertok(gpio_hog_lookup_name("hog_input_active_high", &desc));
  106. ut_asserteq(GPIOD_IS_IN, desc->flags);
  107. ut_asserteq(11, desc->offset);
  108. ut_asserteq(0, dm_gpio_get_value(desc));
  109. ut_assertok(gpio_hog_lookup_name("hog_output_low", &desc));
  110. ut_asserteq(GPIOD_IS_OUT, desc->flags);
  111. ut_asserteq(12, desc->offset);
  112. ut_asserteq(0, dm_gpio_get_value(desc));
  113. ut_assertok(dm_gpio_set_value(desc, 1));
  114. ut_asserteq(1, dm_gpio_get_value(desc));
  115. ut_assertok(gpio_hog_lookup_name("hog_output_high", &desc));
  116. ut_asserteq(GPIOD_IS_OUT, desc->flags);
  117. ut_asserteq(13, desc->offset);
  118. ut_asserteq(1, dm_gpio_get_value(desc));
  119. ut_assertok(dm_gpio_set_value(desc, 0));
  120. ut_asserteq(0, dm_gpio_get_value(desc));
  121. /* Check if lookup for labels work */
  122. ut_assertok(gpio_lookup_name("hog_input_active_low", &dev, &offset,
  123. &gpio));
  124. ut_asserteq_str(dev->name, "base-gpios");
  125. ut_asserteq(10, offset);
  126. ut_asserteq(CONFIG_SANDBOX_GPIO_COUNT + 10, gpio);
  127. ut_assert(gpio_lookup_name("hog_not_exist", &dev, &offset,
  128. &gpio));
  129. return 0;
  130. }
  131. DM_TEST(dm_test_gpio, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
  132. /* Test that GPIO open-drain/open-source emulation works correctly */
  133. static int dm_test_gpio_opendrain_opensource(struct unit_test_state *uts)
  134. {
  135. struct gpio_desc desc_list[8];
  136. struct udevice *dev, *gpio_c;
  137. char buf[80];
  138. ut_assertok(uclass_get_device(UCLASS_TEST_FDT, 0, &dev));
  139. ut_asserteq_str("a-test", dev->name);
  140. ut_assertok(uclass_get_device(UCLASS_GPIO, 3, &gpio_c));
  141. ut_asserteq_str("pinmux-gpios", gpio_c->name);
  142. ut_asserteq(8, gpio_request_list_by_name(dev, "test3-gpios", desc_list,
  143. ARRAY_SIZE(desc_list), 0))
  144. ut_asserteq(true, !!device_active(gpio_c));
  145. ut_asserteq_ptr(gpio_c, desc_list[0].dev);
  146. ut_asserteq_ptr(gpio_c, desc_list[1].dev);
  147. ut_asserteq_ptr(gpio_c, desc_list[2].dev);
  148. ut_asserteq_ptr(gpio_c, desc_list[3].dev);
  149. ut_asserteq_ptr(gpio_c, desc_list[4].dev);
  150. ut_asserteq_ptr(gpio_c, desc_list[5].dev);
  151. ut_asserteq_ptr(gpio_c, desc_list[6].dev);
  152. ut_asserteq_ptr(gpio_c, desc_list[7].dev);
  153. /* GPIO 0 is (GPIO_OUT|GPIO_OPEN_DRAIN) */
  154. ut_asserteq(GPIOD_IS_OUT | GPIOD_OPEN_DRAIN,
  155. sandbox_gpio_get_dir_flags(gpio_c, 0));
  156. /* Set it as output high, should become an input */
  157. ut_assertok(dm_gpio_set_value(&desc_list[0], 1));
  158. ut_assertok(gpio_get_status(gpio_c, 0, buf, sizeof(buf)));
  159. ut_asserteq_str("c0: input: 0 [x] a-test.test3-gpios0", buf);
  160. /* Set it as output low, should become output low */
  161. ut_assertok(dm_gpio_set_value(&desc_list[0], 0));
  162. ut_assertok(gpio_get_status(gpio_c, 0, buf, sizeof(buf)));
  163. ut_asserteq_str("c0: output: 0 [x] a-test.test3-gpios0", buf);
  164. /* GPIO 1 is (GPIO_OUT|GPIO_OPEN_SOURCE) */
  165. ut_asserteq(GPIOD_IS_OUT | GPIOD_OPEN_SOURCE,
  166. sandbox_gpio_get_dir_flags(gpio_c, 1));
  167. /* Set it as output high, should become output high */
  168. ut_assertok(dm_gpio_set_value(&desc_list[1], 1));
  169. ut_assertok(gpio_get_status(gpio_c, 1, buf, sizeof(buf)));
  170. ut_asserteq_str("c1: output: 1 [x] a-test.test3-gpios1", buf);
  171. /* Set it as output low, should become an input */
  172. ut_assertok(dm_gpio_set_value(&desc_list[1], 0));
  173. ut_assertok(gpio_get_status(gpio_c, 1, buf, sizeof(buf)));
  174. ut_asserteq_str("c1: input: 1 [x] a-test.test3-gpios1", buf);
  175. /* GPIO 6 is (GPIO_ACTIVE_LOW|GPIO_OUT|GPIO_OPEN_DRAIN) */
  176. ut_asserteq(GPIOD_ACTIVE_LOW | GPIOD_IS_OUT | GPIOD_OPEN_DRAIN,
  177. sandbox_gpio_get_dir_flags(gpio_c, 6));
  178. /* Set it as output high, should become output low */
  179. ut_assertok(dm_gpio_set_value(&desc_list[6], 1));
  180. ut_assertok(gpio_get_status(gpio_c, 6, buf, sizeof(buf)));
  181. ut_asserteq_str("c6: output: 0 [x] a-test.test3-gpios6", buf);
  182. /* Set it as output low, should become an input */
  183. ut_assertok(dm_gpio_set_value(&desc_list[6], 0));
  184. ut_assertok(gpio_get_status(gpio_c, 6, buf, sizeof(buf)));
  185. ut_asserteq_str("c6: input: 0 [x] a-test.test3-gpios6", buf);
  186. /* GPIO 7 is (GPIO_ACTIVE_LOW|GPIO_OUT|GPIO_OPEN_SOURCE) */
  187. ut_asserteq(GPIOD_ACTIVE_LOW | GPIOD_IS_OUT | GPIOD_OPEN_SOURCE,
  188. sandbox_gpio_get_dir_flags(gpio_c, 7));
  189. /* Set it as output high, should become an input */
  190. ut_assertok(dm_gpio_set_value(&desc_list[7], 1));
  191. ut_assertok(gpio_get_status(gpio_c, 7, buf, sizeof(buf)));
  192. ut_asserteq_str("c7: input: 0 [x] a-test.test3-gpios7", buf);
  193. /* Set it as output low, should become output high */
  194. ut_assertok(dm_gpio_set_value(&desc_list[7], 0));
  195. ut_assertok(gpio_get_status(gpio_c, 7, buf, sizeof(buf)));
  196. ut_asserteq_str("c7: output: 1 [x] a-test.test3-gpios7", buf);
  197. ut_assertok(gpio_free_list(dev, desc_list, 8));
  198. return 0;
  199. }
  200. DM_TEST(dm_test_gpio_opendrain_opensource,
  201. UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
  202. /* Test that sandbox anonymous GPIOs work correctly */
  203. static int dm_test_gpio_anon(struct unit_test_state *uts)
  204. {
  205. unsigned int offset, gpio;
  206. struct udevice *dev;
  207. const char *name;
  208. int offset_count;
  209. /* And the anonymous bank */
  210. ut_assertok(gpio_lookup_name("14", &dev, &offset, &gpio));
  211. ut_asserteq_str(dev->name, "sandbox_gpio");
  212. ut_asserteq(14, offset);
  213. ut_asserteq(14, gpio);
  214. name = gpio_get_bank_info(dev, &offset_count);
  215. ut_asserteq_ptr(NULL, name);
  216. ut_asserteq(CONFIG_SANDBOX_GPIO_COUNT, offset_count);
  217. return 0;
  218. }
  219. DM_TEST(dm_test_gpio_anon, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
  220. /* Test that gpio_requestf() works as expected */
  221. static int dm_test_gpio_requestf(struct unit_test_state *uts)
  222. {
  223. unsigned int offset, gpio;
  224. struct udevice *dev;
  225. char buf[80];
  226. ut_assertok(gpio_lookup_name("b5", &dev, &offset, &gpio));
  227. ut_assertok(gpio_requestf(gpio, "testing %d %s", 1, "hi"));
  228. sandbox_gpio_set_direction(dev, offset, 1);
  229. sandbox_gpio_set_value(dev, offset, 1);
  230. ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf)));
  231. ut_asserteq_str("b5: output: 1 [x] testing 1 hi", buf);
  232. return 0;
  233. }
  234. DM_TEST(dm_test_gpio_requestf, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
  235. /* Test that gpio_request() copies its string */
  236. static int dm_test_gpio_copy(struct unit_test_state *uts)
  237. {
  238. unsigned int offset, gpio;
  239. struct udevice *dev;
  240. char buf[80], name[10];
  241. ut_assertok(gpio_lookup_name("b6", &dev, &offset, &gpio));
  242. strcpy(name, "odd_name");
  243. ut_assertok(gpio_request(gpio, name));
  244. sandbox_gpio_set_direction(dev, offset, 1);
  245. sandbox_gpio_set_value(dev, offset, 1);
  246. ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf)));
  247. ut_asserteq_str("b6: output: 1 [x] odd_name", buf);
  248. strcpy(name, "nothing");
  249. ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf)));
  250. ut_asserteq_str("b6: output: 1 [x] odd_name", buf);
  251. return 0;
  252. }
  253. DM_TEST(dm_test_gpio_copy, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
  254. /* Test that we don't leak memory with GPIOs */
  255. static int dm_test_gpio_leak(struct unit_test_state *uts)
  256. {
  257. ut_assertok(dm_test_gpio(uts));
  258. ut_assertok(dm_test_gpio_anon(uts));
  259. ut_assertok(dm_test_gpio_requestf(uts));
  260. ut_assertok(dm_leak_check_end(uts));
  261. return 0;
  262. }
  263. DM_TEST(dm_test_gpio_leak, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
  264. /* Test that we can find GPIOs using phandles */
  265. static int dm_test_gpio_phandles(struct unit_test_state *uts)
  266. {
  267. struct gpio_desc desc, desc_list[8], desc_list2[8];
  268. struct udevice *dev, *gpio_a, *gpio_b;
  269. ut_assertok(uclass_get_device(UCLASS_TEST_FDT, 0, &dev));
  270. ut_asserteq_str("a-test", dev->name);
  271. ut_assertok(gpio_request_by_name(dev, "test-gpios", 1, &desc, 0));
  272. ut_assertok(uclass_get_device(UCLASS_GPIO, 1, &gpio_a));
  273. ut_assertok(uclass_get_device(UCLASS_GPIO, 2, &gpio_b));
  274. ut_asserteq_str("base-gpios", gpio_a->name);
  275. ut_asserteq(true, !!device_active(gpio_a));
  276. ut_asserteq_ptr(gpio_a, desc.dev);
  277. ut_asserteq(4, desc.offset);
  278. /* GPIOF_INPUT is the sandbox GPIO driver default */
  279. ut_asserteq(GPIOF_INPUT, gpio_get_function(gpio_a, 4, NULL));
  280. ut_assertok(dm_gpio_free(dev, &desc));
  281. ut_asserteq(-ENOENT, gpio_request_by_name(dev, "test-gpios", 3, &desc,
  282. 0));
  283. ut_asserteq_ptr(NULL, desc.dev);
  284. ut_asserteq(desc.offset, 0);
  285. ut_asserteq(-ENOENT, gpio_request_by_name(dev, "test-gpios", 5, &desc,
  286. 0));
  287. /* Last GPIO is ignord as it comes after <0> */
  288. ut_asserteq(3, gpio_request_list_by_name(dev, "test-gpios", desc_list,
  289. ARRAY_SIZE(desc_list), 0));
  290. ut_asserteq(-EBUSY, gpio_request_list_by_name(dev, "test-gpios",
  291. desc_list2,
  292. ARRAY_SIZE(desc_list2),
  293. 0));
  294. ut_asserteq(GPIOF_INPUT, gpio_get_function(gpio_a, 4, NULL));
  295. ut_assertok(gpio_free_list(dev, desc_list, 3));
  296. ut_asserteq(GPIOF_UNUSED, gpio_get_function(gpio_a, 4, NULL));
  297. ut_asserteq(3, gpio_request_list_by_name(dev, "test-gpios", desc_list,
  298. ARRAY_SIZE(desc_list),
  299. GPIOD_IS_OUT |
  300. GPIOD_IS_OUT_ACTIVE));
  301. ut_asserteq(GPIOF_OUTPUT, gpio_get_function(gpio_a, 4, NULL));
  302. ut_asserteq_ptr(gpio_a, desc_list[0].dev);
  303. ut_asserteq(1, desc_list[0].offset);
  304. ut_asserteq_ptr(gpio_a, desc_list[1].dev);
  305. ut_asserteq(4, desc_list[1].offset);
  306. ut_asserteq_ptr(gpio_b, desc_list[2].dev);
  307. ut_asserteq(5, desc_list[2].offset);
  308. ut_asserteq(1, dm_gpio_get_value(desc_list));
  309. ut_assertok(gpio_free_list(dev, desc_list, 3));
  310. ut_asserteq(GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE,
  311. sandbox_gpio_get_dir_flags(gpio_a, 1));
  312. ut_asserteq(6, gpio_request_list_by_name(dev, "test2-gpios", desc_list,
  313. ARRAY_SIZE(desc_list), 0));
  314. /* This was set to output previously but flags resetted to 0 = INPUT */
  315. ut_asserteq(0, sandbox_gpio_get_dir_flags(gpio_a, 1));
  316. ut_asserteq(GPIOF_INPUT, gpio_get_function(gpio_a, 1, NULL));
  317. /* Active low should invert the input value */
  318. ut_asserteq(GPIOF_INPUT, gpio_get_function(gpio_b, 6, NULL));
  319. ut_asserteq(1, dm_gpio_get_value(&desc_list[2]));
  320. ut_asserteq(GPIOF_INPUT, gpio_get_function(gpio_b, 7, NULL));
  321. ut_asserteq(GPIOF_OUTPUT, gpio_get_function(gpio_b, 8, NULL));
  322. ut_asserteq(0, dm_gpio_get_value(&desc_list[4]));
  323. ut_asserteq(GPIOF_OUTPUT, gpio_get_function(gpio_b, 9, NULL));
  324. ut_asserteq(1, dm_gpio_get_value(&desc_list[5]));
  325. return 0;
  326. }
  327. DM_TEST(dm_test_gpio_phandles, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
  328. /* Check the gpio pin configuration get from device tree information */
  329. static int dm_test_gpio_get_dir_flags(struct unit_test_state *uts)
  330. {
  331. struct gpio_desc desc_list[6];
  332. struct udevice *dev;
  333. ulong flags;
  334. ut_assertok(uclass_get_device(UCLASS_TEST_FDT, 0, &dev));
  335. ut_asserteq(6, gpio_request_list_by_name(dev, "test3-gpios", desc_list,
  336. ARRAY_SIZE(desc_list), 0));
  337. ut_assertok(dm_gpio_get_dir_flags(&desc_list[0], &flags));
  338. ut_asserteq(GPIOD_IS_OUT | GPIOD_OPEN_DRAIN, flags);
  339. ut_assertok(dm_gpio_get_dir_flags(&desc_list[1], &flags));
  340. ut_asserteq(GPIOD_IS_OUT | GPIOD_OPEN_SOURCE, flags);
  341. ut_assertok(dm_gpio_get_dir_flags(&desc_list[2], &flags));
  342. ut_asserteq(GPIOD_IS_OUT, flags);
  343. ut_assertok(dm_gpio_get_dir_flags(&desc_list[3], &flags));
  344. ut_asserteq(GPIOD_IS_IN | GPIOD_PULL_UP, flags);
  345. ut_assertok(dm_gpio_get_dir_flags(&desc_list[4], &flags));
  346. ut_asserteq(GPIOD_IS_IN | GPIOD_PULL_DOWN, flags);
  347. ut_assertok(dm_gpio_get_dir_flags(&desc_list[5], &flags));
  348. ut_asserteq(GPIOD_IS_IN, flags);
  349. ut_assertok(gpio_free_list(dev, desc_list, 6));
  350. return 0;
  351. }
  352. DM_TEST(dm_test_gpio_get_dir_flags, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
  353. /* Test of gpio_get_acpi() */
  354. static int dm_test_gpio_get_acpi(struct unit_test_state *uts)
  355. {
  356. struct acpi_gpio agpio;
  357. struct udevice *dev;
  358. struct gpio_desc desc;
  359. ut_assertok(uclass_get_device(UCLASS_TEST_FDT, 0, &dev));
  360. ut_asserteq_str("a-test", dev->name);
  361. ut_assertok(gpio_request_by_name(dev, "test-gpios", 1, &desc, 0));
  362. /* See sb_gpio_get_acpi() */
  363. ut_assertok(gpio_get_acpi(&desc, &agpio));
  364. ut_asserteq(1, agpio.pin_count);
  365. ut_asserteq(4, agpio.pins[0]);
  366. ut_asserteq(ACPI_GPIO_TYPE_IO, agpio.type);
  367. ut_asserteq(ACPI_GPIO_PULL_UP, agpio.pull);
  368. ut_asserteq_str("\\_SB.PINC", agpio.resource);
  369. ut_asserteq(0, agpio.interrupt_debounce_timeout);
  370. ut_asserteq(0, agpio.irq.pin);
  371. ut_asserteq(1234, agpio.output_drive_strength);
  372. ut_asserteq(true, agpio.io_shared);
  373. ut_asserteq(ACPI_GPIO_IO_RESTRICT_INPUT, agpio.io_restrict);
  374. ut_asserteq(ACPI_GPIO_ACTIVE_HIGH, agpio.polarity);
  375. return 0;
  376. }
  377. DM_TEST(dm_test_gpio_get_acpi, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
  378. /* Test of gpio_get_acpi() with an interrupt GPIO */
  379. static int dm_test_gpio_get_acpi_irq(struct unit_test_state *uts)
  380. {
  381. struct acpi_gpio agpio;
  382. struct udevice *dev;
  383. struct gpio_desc desc;
  384. ut_assertok(uclass_get_device(UCLASS_TEST_FDT, 0, &dev));
  385. ut_asserteq_str("a-test", dev->name);
  386. ut_assertok(gpio_request_by_name(dev, "test2-gpios", 2, &desc, 0));
  387. /* See sb_gpio_get_acpi() */
  388. ut_assertok(gpio_get_acpi(&desc, &agpio));
  389. ut_asserteq(1, agpio.pin_count);
  390. ut_asserteq(6, agpio.pins[0]);
  391. ut_asserteq(ACPI_GPIO_TYPE_INTERRUPT, agpio.type);
  392. ut_asserteq(ACPI_GPIO_PULL_DOWN, agpio.pull);
  393. ut_asserteq_str("\\_SB.PINC", agpio.resource);
  394. ut_asserteq(4321, agpio.interrupt_debounce_timeout);
  395. ut_asserteq(6, agpio.irq.pin);
  396. ut_asserteq(ACPI_IRQ_ACTIVE_BOTH, agpio.irq.polarity);
  397. ut_asserteq(ACPI_IRQ_SHARED, agpio.irq.shared);
  398. ut_asserteq(true, agpio.irq.wake);
  399. ut_asserteq(0, agpio.output_drive_strength);
  400. ut_asserteq(false, agpio.io_shared);
  401. ut_asserteq(0, agpio.io_restrict);
  402. ut_asserteq(ACPI_GPIO_ACTIVE_LOW, agpio.polarity);
  403. return 0;
  404. }
  405. DM_TEST(dm_test_gpio_get_acpi_irq, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
  406. /* Test that we can get/release GPIOs using managed API */
  407. static int dm_test_gpio_devm(struct unit_test_state *uts)
  408. {
  409. static const u32 flags = GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE;
  410. struct gpio_desc *desc1, *desc2, *desc3, *desc_err;
  411. struct udevice *dev;
  412. struct udevice *dev2;
  413. ut_assertok(uclass_get_device_by_name(UCLASS_TEST_FDT, "a-test",
  414. &dev));
  415. ut_assertok(uclass_get_device_by_name(UCLASS_TEST_FDT, "another-test",
  416. &dev2));
  417. /* Get 3 GPIOs from 'a-test' dev */
  418. desc1 = devm_gpiod_get_index(dev, "test4", 0, flags);
  419. ut_assert(!IS_ERR(desc1));
  420. desc2 = devm_gpiod_get_index(dev, "test4", 1, flags);
  421. ut_assert(!IS_ERR(desc2));
  422. desc3 = devm_gpiod_get_index_optional(dev, "test5", 0, flags);
  423. ut_assert(!IS_ERR(desc3));
  424. ut_assert(desc3);
  425. /*
  426. * Try get the same 3 GPIOs from 'a-test' and 'another-test' devices.
  427. * check that it fails
  428. */
  429. desc_err = devm_gpiod_get_index(dev, "test4", 0, flags);
  430. ut_asserteq(-EBUSY, PTR_ERR(desc_err));
  431. desc_err = devm_gpiod_get_index(dev2, "test4", 0, flags);
  432. ut_asserteq(-EBUSY, PTR_ERR(desc_err));
  433. desc_err = devm_gpiod_get_index(dev, "test4", 1, flags);
  434. ut_asserteq(-EBUSY, PTR_ERR(desc_err));
  435. desc_err = devm_gpiod_get_index(dev2, "test4", 1, flags);
  436. ut_asserteq(-EBUSY, PTR_ERR(desc_err));
  437. desc_err = devm_gpiod_get_index_optional(dev, "test5", 0, flags);
  438. ut_asserteq_ptr(NULL, desc_err);
  439. desc_err = devm_gpiod_get_index_optional(dev2, "test5", 0, flags);
  440. ut_asserteq_ptr(NULL, desc_err);
  441. /* Try get GPIOs outside of the list */
  442. desc_err = devm_gpiod_get_index(dev, "test4", 2, flags);
  443. ut_assert(IS_ERR(desc_err));
  444. desc_err = devm_gpiod_get_index_optional(dev, "test5", 1, flags);
  445. ut_asserteq_ptr(NULL, desc_err);
  446. /* Manipulate the GPIOs */
  447. ut_assertok(dm_gpio_set_value(desc1, 1));
  448. ut_asserteq(1, dm_gpio_get_value(desc1));
  449. ut_assertok(dm_gpio_set_value(desc1, 0));
  450. ut_asserteq(0, dm_gpio_get_value(desc1));
  451. ut_assertok(dm_gpio_set_value(desc2, 1));
  452. ut_asserteq(1, dm_gpio_get_value(desc2));
  453. ut_assertok(dm_gpio_set_value(desc2, 0));
  454. ut_asserteq(0, dm_gpio_get_value(desc2));
  455. ut_assertok(dm_gpio_set_value(desc3, 1));
  456. ut_asserteq(1, dm_gpio_get_value(desc3));
  457. ut_assertok(dm_gpio_set_value(desc3, 0));
  458. ut_asserteq(0, dm_gpio_get_value(desc3));
  459. /* Check that the GPIO cannot be owned by more than one device */
  460. desc_err = devm_gpiod_get_index(dev2, "test4", 0, flags);
  461. ut_asserteq(-EBUSY, PTR_ERR(desc_err));
  462. desc_err = devm_gpiod_get_index(dev2, "test4", 1, flags);
  463. ut_asserteq(-EBUSY, PTR_ERR(desc_err));
  464. desc_err = devm_gpiod_get_index_optional(dev2, "test5", 0, flags);
  465. ut_asserteq_ptr(NULL, desc_err);
  466. /*
  467. * Release one GPIO and check that we can get it back using
  468. * 'another-test' and then 'a-test'
  469. */
  470. devm_gpiod_put(dev, desc2);
  471. desc2 = devm_gpiod_get_index(dev2, "test4", 1, flags);
  472. ut_assert(!IS_ERR(desc2));
  473. devm_gpiod_put(dev2, desc2);
  474. desc2 = devm_gpiod_get_index(dev, "test4", 1, flags);
  475. ut_assert(!IS_ERR(desc2));
  476. /* Release one GPIO before removing the 'a-test' dev. */
  477. devm_gpiod_put(dev, desc2);
  478. device_remove(dev, DM_REMOVE_NORMAL);
  479. /* All the GPIOs must have been freed. We should be able to claim
  480. * them with the 'another-test' device.
  481. */
  482. desc1 = devm_gpiod_get_index(dev2, "test4", 0, flags);
  483. ut_assert(!IS_ERR(desc1));
  484. desc2 = devm_gpiod_get_index(dev2, "test4", 1, flags);
  485. ut_assert(!IS_ERR(desc2));
  486. desc3 = devm_gpiod_get_index_optional(dev2, "test5", 0, flags);
  487. ut_assert(!IS_ERR(desc3));
  488. ut_assert(desc3);
  489. device_remove(dev2, DM_REMOVE_NORMAL);
  490. return 0;
  491. }
  492. DM_TEST(dm_test_gpio_devm, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);