gpio.c 27 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 plat. 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_flags(dev, offset));
  73. ut_assertok(ops->set_flags(dev, offset,
  74. GPIOD_IS_OUT | GPIOD_OPEN_DRAIN));
  75. ut_asserteq(GPIOD_IS_OUT | GPIOD_OPEN_DRAIN,
  76. sandbox_gpio_get_flags(dev, offset));
  77. ut_assertok(ops->set_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_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_flags(gpio_c, 0));
  156. /* Set it as output high */
  157. ut_assertok(dm_gpio_set_value(&desc_list[0], 1));
  158. ut_asserteq(GPIOD_IS_OUT | GPIOD_OPEN_DRAIN | GPIOD_IS_OUT_ACTIVE,
  159. sandbox_gpio_get_flags(gpio_c, 0));
  160. /* Set it as output low */
  161. ut_assertok(dm_gpio_set_value(&desc_list[0], 0));
  162. ut_asserteq(GPIOD_IS_OUT | GPIOD_OPEN_DRAIN,
  163. sandbox_gpio_get_flags(gpio_c, 0));
  164. /* GPIO 1 is (GPIO_OUT|GPIO_OPEN_SOURCE) */
  165. ut_asserteq(GPIOD_IS_OUT | GPIOD_OPEN_SOURCE,
  166. sandbox_gpio_get_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 */
  172. ut_assertok(dm_gpio_set_value(&desc_list[1], 0));
  173. ut_asserteq(GPIOD_IS_OUT | GPIOD_OPEN_SOURCE,
  174. sandbox_gpio_get_flags(gpio_c, 1));
  175. ut_assertok(gpio_get_status(gpio_c, 1, buf, sizeof(buf)));
  176. ut_asserteq_str("c1: output: 0 [x] a-test.test3-gpios1", buf);
  177. /*
  178. * GPIO 6 is (GPIO_ACTIVE_LOW|GPIO_OUT|GPIO_OPEN_DRAIN). Looking at it
  179. * directlt from the driver, we get GPIOD_IS_OUT_ACTIVE also, since it
  180. * is active low
  181. */
  182. ut_asserteq(GPIOD_ACTIVE_LOW | GPIOD_IS_OUT | GPIOD_OPEN_DRAIN |
  183. GPIOD_IS_OUT_ACTIVE,
  184. sandbox_gpio_get_flags(gpio_c, 6));
  185. /* Set it as output high, should become output low */
  186. ut_assertok(dm_gpio_set_value(&desc_list[6], 1));
  187. ut_assertok(gpio_get_status(gpio_c, 6, buf, sizeof(buf)));
  188. ut_asserteq_str("c6: output: 0 [x] a-test.test3-gpios6", buf);
  189. /* Set it as output low */
  190. ut_assertok(dm_gpio_set_value(&desc_list[6], 0));
  191. ut_asserteq(GPIOD_ACTIVE_LOW | GPIOD_IS_OUT | GPIOD_OPEN_DRAIN |
  192. GPIOD_IS_OUT_ACTIVE,
  193. sandbox_gpio_get_flags(gpio_c, 6));
  194. /* GPIO 7 is (GPIO_ACTIVE_LOW|GPIO_OUT|GPIO_OPEN_SOURCE) */
  195. ut_asserteq(GPIOD_ACTIVE_LOW | GPIOD_IS_OUT | GPIOD_OPEN_SOURCE |
  196. GPIOD_IS_OUT_ACTIVE,
  197. sandbox_gpio_get_flags(gpio_c, 7));
  198. /* Set it as output high */
  199. ut_assertok(dm_gpio_set_value(&desc_list[7], 1));
  200. ut_asserteq(GPIOD_ACTIVE_LOW | GPIOD_IS_OUT | GPIOD_OPEN_SOURCE,
  201. sandbox_gpio_get_flags(gpio_c, 7));
  202. /* Set it as output low, should become output high */
  203. ut_assertok(dm_gpio_set_value(&desc_list[7], 0));
  204. ut_assertok(gpio_get_status(gpio_c, 7, buf, sizeof(buf)));
  205. ut_asserteq_str("c7: output: 1 [x] a-test.test3-gpios7", buf);
  206. ut_assertok(gpio_free_list(dev, desc_list, 8));
  207. return 0;
  208. }
  209. DM_TEST(dm_test_gpio_opendrain_opensource,
  210. UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
  211. /* Test that sandbox anonymous GPIOs work correctly */
  212. static int dm_test_gpio_anon(struct unit_test_state *uts)
  213. {
  214. unsigned int offset, gpio;
  215. struct udevice *dev;
  216. const char *name;
  217. int offset_count;
  218. /* And the anonymous bank */
  219. ut_assertok(gpio_lookup_name("14", &dev, &offset, &gpio));
  220. ut_asserteq_str(dev->name, "sandbox_gpio");
  221. ut_asserteq(14, offset);
  222. ut_asserteq(14, gpio);
  223. name = gpio_get_bank_info(dev, &offset_count);
  224. ut_asserteq_ptr(NULL, name);
  225. ut_asserteq(CONFIG_SANDBOX_GPIO_COUNT, offset_count);
  226. return 0;
  227. }
  228. DM_TEST(dm_test_gpio_anon, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
  229. /* Test that gpio_requestf() works as expected */
  230. static int dm_test_gpio_requestf(struct unit_test_state *uts)
  231. {
  232. unsigned int offset, gpio;
  233. struct udevice *dev;
  234. char buf[80];
  235. ut_assertok(gpio_lookup_name("b5", &dev, &offset, &gpio));
  236. ut_assertok(gpio_requestf(gpio, "testing %d %s", 1, "hi"));
  237. sandbox_gpio_set_direction(dev, offset, 1);
  238. sandbox_gpio_set_value(dev, offset, 1);
  239. ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf)));
  240. ut_asserteq_str("b5: output: 1 [x] testing 1 hi", buf);
  241. return 0;
  242. }
  243. DM_TEST(dm_test_gpio_requestf, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
  244. /* Test that gpio_request() copies its string */
  245. static int dm_test_gpio_copy(struct unit_test_state *uts)
  246. {
  247. unsigned int offset, gpio;
  248. struct udevice *dev;
  249. char buf[80], name[10];
  250. ut_assertok(gpio_lookup_name("b6", &dev, &offset, &gpio));
  251. strcpy(name, "odd_name");
  252. ut_assertok(gpio_request(gpio, name));
  253. sandbox_gpio_set_direction(dev, offset, 1);
  254. sandbox_gpio_set_value(dev, offset, 1);
  255. ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf)));
  256. ut_asserteq_str("b6: output: 1 [x] odd_name", buf);
  257. strcpy(name, "nothing");
  258. ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf)));
  259. ut_asserteq_str("b6: output: 1 [x] odd_name", buf);
  260. return 0;
  261. }
  262. DM_TEST(dm_test_gpio_copy, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
  263. /* Test that we don't leak memory with GPIOs */
  264. static int dm_test_gpio_leak(struct unit_test_state *uts)
  265. {
  266. ut_assertok(dm_test_gpio(uts));
  267. ut_assertok(dm_test_gpio_anon(uts));
  268. ut_assertok(dm_test_gpio_requestf(uts));
  269. ut_assertok(dm_leak_check_end(uts));
  270. return 0;
  271. }
  272. DM_TEST(dm_test_gpio_leak, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
  273. /* Test that we can find GPIOs using phandles */
  274. static int dm_test_gpio_phandles(struct unit_test_state *uts)
  275. {
  276. struct gpio_desc desc, desc_list[8], desc_list2[8];
  277. struct udevice *dev, *gpio_a, *gpio_b;
  278. ut_assertok(uclass_get_device(UCLASS_TEST_FDT, 0, &dev));
  279. ut_asserteq_str("a-test", dev->name);
  280. ut_assertok(gpio_request_by_name(dev, "test-gpios", 1, &desc, 0));
  281. ut_assertok(uclass_get_device(UCLASS_GPIO, 1, &gpio_a));
  282. ut_assertok(uclass_get_device(UCLASS_GPIO, 2, &gpio_b));
  283. ut_asserteq_str("base-gpios", gpio_a->name);
  284. ut_asserteq(true, !!device_active(gpio_a));
  285. ut_asserteq_ptr(gpio_a, desc.dev);
  286. ut_asserteq(4, desc.offset);
  287. /* GPIOF_INPUT is the sandbox GPIO driver default */
  288. ut_asserteq(GPIOF_INPUT, gpio_get_function(gpio_a, 4, NULL));
  289. ut_assertok(dm_gpio_free(dev, &desc));
  290. ut_asserteq(-ENOENT, gpio_request_by_name(dev, "test-gpios", 3, &desc,
  291. 0));
  292. ut_asserteq_ptr(NULL, desc.dev);
  293. ut_asserteq(desc.offset, 0);
  294. ut_asserteq(-ENOENT, gpio_request_by_name(dev, "test-gpios", 5, &desc,
  295. 0));
  296. /* Last GPIO is ignord as it comes after <0> */
  297. ut_asserteq(3, gpio_request_list_by_name(dev, "test-gpios", desc_list,
  298. ARRAY_SIZE(desc_list), 0));
  299. ut_asserteq(-EBUSY, gpio_request_list_by_name(dev, "test-gpios",
  300. desc_list2,
  301. ARRAY_SIZE(desc_list2),
  302. 0));
  303. ut_asserteq(GPIOF_INPUT, gpio_get_function(gpio_a, 4, NULL));
  304. ut_assertok(gpio_free_list(dev, desc_list, 3));
  305. ut_asserteq(GPIOF_UNUSED, gpio_get_function(gpio_a, 4, NULL));
  306. ut_asserteq(3, gpio_request_list_by_name(dev, "test-gpios", desc_list,
  307. ARRAY_SIZE(desc_list),
  308. GPIOD_IS_OUT |
  309. GPIOD_IS_OUT_ACTIVE));
  310. ut_asserteq(GPIOF_OUTPUT, gpio_get_function(gpio_a, 4, NULL));
  311. ut_asserteq_ptr(gpio_a, desc_list[0].dev);
  312. ut_asserteq(1, desc_list[0].offset);
  313. ut_asserteq_ptr(gpio_a, desc_list[1].dev);
  314. ut_asserteq(4, desc_list[1].offset);
  315. ut_asserteq_ptr(gpio_b, desc_list[2].dev);
  316. ut_asserteq(5, desc_list[2].offset);
  317. ut_asserteq(1, dm_gpio_get_value(desc_list));
  318. ut_assertok(gpio_free_list(dev, desc_list, 3));
  319. ut_asserteq(GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE,
  320. sandbox_gpio_get_flags(gpio_a, 1));
  321. ut_asserteq(6, gpio_request_list_by_name(dev, "test2-gpios", desc_list,
  322. ARRAY_SIZE(desc_list), 0));
  323. /* This was set to output previously but flags resetted to 0 = INPUT */
  324. ut_asserteq(0, sandbox_gpio_get_flags(gpio_a, 1));
  325. ut_asserteq(GPIOF_INPUT, gpio_get_function(gpio_a, 1, NULL));
  326. /* Active low should invert the input value */
  327. ut_asserteq(GPIOF_INPUT, gpio_get_function(gpio_b, 6, NULL));
  328. ut_asserteq(1, dm_gpio_get_value(&desc_list[2]));
  329. ut_asserteq(GPIOF_INPUT, gpio_get_function(gpio_b, 7, NULL));
  330. ut_asserteq(GPIOF_OUTPUT, gpio_get_function(gpio_b, 8, NULL));
  331. ut_asserteq(0, dm_gpio_get_value(&desc_list[4]));
  332. ut_asserteq(GPIOF_OUTPUT, gpio_get_function(gpio_b, 9, NULL));
  333. ut_asserteq(1, dm_gpio_get_value(&desc_list[5]));
  334. return 0;
  335. }
  336. DM_TEST(dm_test_gpio_phandles, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
  337. /* Check the gpio pin configuration get from device tree information */
  338. static int dm_test_gpio_get_dir_flags(struct unit_test_state *uts)
  339. {
  340. struct gpio_desc desc_list[6];
  341. struct udevice *dev;
  342. ulong flags;
  343. ut_assertok(uclass_get_device(UCLASS_TEST_FDT, 0, &dev));
  344. ut_asserteq(6, gpio_request_list_by_name(dev, "test3-gpios", desc_list,
  345. ARRAY_SIZE(desc_list), 0));
  346. ut_assertok(dm_gpio_get_flags(&desc_list[0], &flags));
  347. ut_asserteq(GPIOD_IS_OUT | GPIOD_OPEN_DRAIN, flags);
  348. ut_assertok(dm_gpio_get_flags(&desc_list[1], &flags));
  349. ut_asserteq(GPIOD_IS_OUT | GPIOD_OPEN_SOURCE, flags);
  350. ut_assertok(dm_gpio_get_flags(&desc_list[2], &flags));
  351. ut_asserteq(GPIOD_IS_OUT, flags);
  352. ut_assertok(dm_gpio_get_flags(&desc_list[3], &flags));
  353. ut_asserteq(GPIOD_IS_IN | GPIOD_PULL_UP, flags);
  354. ut_assertok(dm_gpio_get_flags(&desc_list[4], &flags));
  355. ut_asserteq(GPIOD_IS_IN | GPIOD_PULL_DOWN, flags);
  356. ut_assertok(dm_gpio_get_flags(&desc_list[5], &flags));
  357. ut_asserteq(GPIOD_IS_IN, flags);
  358. ut_assertok(gpio_free_list(dev, desc_list, 6));
  359. return 0;
  360. }
  361. DM_TEST(dm_test_gpio_get_dir_flags, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
  362. /* Test of gpio_get_acpi() */
  363. static int dm_test_gpio_get_acpi(struct unit_test_state *uts)
  364. {
  365. struct acpi_gpio agpio;
  366. struct udevice *dev;
  367. struct gpio_desc desc;
  368. ut_assertok(uclass_get_device(UCLASS_TEST_FDT, 0, &dev));
  369. ut_asserteq_str("a-test", dev->name);
  370. ut_assertok(gpio_request_by_name(dev, "test-gpios", 1, &desc, 0));
  371. /* See sb_gpio_get_acpi() */
  372. ut_assertok(gpio_get_acpi(&desc, &agpio));
  373. ut_asserteq(1, agpio.pin_count);
  374. ut_asserteq(4, agpio.pins[0]);
  375. ut_asserteq(ACPI_GPIO_TYPE_IO, agpio.type);
  376. ut_asserteq(ACPI_GPIO_PULL_UP, agpio.pull);
  377. ut_asserteq_str("\\_SB.PINC", agpio.resource);
  378. ut_asserteq(0, agpio.interrupt_debounce_timeout);
  379. ut_asserteq(0, agpio.irq.pin);
  380. ut_asserteq(1234, agpio.output_drive_strength);
  381. ut_asserteq(true, agpio.io_shared);
  382. ut_asserteq(ACPI_GPIO_IO_RESTRICT_INPUT, agpio.io_restrict);
  383. ut_asserteq(ACPI_GPIO_ACTIVE_HIGH, agpio.polarity);
  384. return 0;
  385. }
  386. DM_TEST(dm_test_gpio_get_acpi, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
  387. /* Test of gpio_get_acpi() with an interrupt GPIO */
  388. static int dm_test_gpio_get_acpi_irq(struct unit_test_state *uts)
  389. {
  390. struct acpi_gpio agpio;
  391. struct udevice *dev;
  392. struct gpio_desc desc;
  393. ut_assertok(uclass_get_device(UCLASS_TEST_FDT, 0, &dev));
  394. ut_asserteq_str("a-test", dev->name);
  395. ut_assertok(gpio_request_by_name(dev, "test2-gpios", 2, &desc, 0));
  396. /* See sb_gpio_get_acpi() */
  397. ut_assertok(gpio_get_acpi(&desc, &agpio));
  398. ut_asserteq(1, agpio.pin_count);
  399. ut_asserteq(6, agpio.pins[0]);
  400. ut_asserteq(ACPI_GPIO_TYPE_INTERRUPT, agpio.type);
  401. ut_asserteq(ACPI_GPIO_PULL_DOWN, agpio.pull);
  402. ut_asserteq_str("\\_SB.PINC", agpio.resource);
  403. ut_asserteq(4321, agpio.interrupt_debounce_timeout);
  404. ut_asserteq(6, agpio.irq.pin);
  405. ut_asserteq(ACPI_IRQ_ACTIVE_BOTH, agpio.irq.polarity);
  406. ut_asserteq(ACPI_IRQ_SHARED, agpio.irq.shared);
  407. ut_asserteq(true, agpio.irq.wake);
  408. ut_asserteq(0, agpio.output_drive_strength);
  409. ut_asserteq(false, agpio.io_shared);
  410. ut_asserteq(0, agpio.io_restrict);
  411. ut_asserteq(ACPI_GPIO_ACTIVE_LOW, agpio.polarity);
  412. return 0;
  413. }
  414. DM_TEST(dm_test_gpio_get_acpi_irq, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
  415. /* Test that we can get/release GPIOs using managed API */
  416. static int dm_test_gpio_devm(struct unit_test_state *uts)
  417. {
  418. static const u32 flags = GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE;
  419. struct gpio_desc *desc1, *desc2, *desc3, *desc_err;
  420. struct udevice *dev;
  421. struct udevice *dev2;
  422. ut_assertok(uclass_get_device_by_name(UCLASS_TEST_FDT, "a-test",
  423. &dev));
  424. ut_assertok(uclass_get_device_by_name(UCLASS_TEST_FDT, "another-test",
  425. &dev2));
  426. /* Get 3 GPIOs from 'a-test' dev */
  427. desc1 = devm_gpiod_get_index(dev, "test4", 0, flags);
  428. ut_assert(!IS_ERR(desc1));
  429. desc2 = devm_gpiod_get_index(dev, "test4", 1, flags);
  430. ut_assert(!IS_ERR(desc2));
  431. desc3 = devm_gpiod_get_index_optional(dev, "test5", 0, flags);
  432. ut_assert(!IS_ERR(desc3));
  433. ut_assert(desc3);
  434. /*
  435. * Try get the same 3 GPIOs from 'a-test' and 'another-test' devices.
  436. * check that it fails
  437. */
  438. desc_err = devm_gpiod_get_index(dev, "test4", 0, flags);
  439. ut_asserteq(-EBUSY, PTR_ERR(desc_err));
  440. desc_err = devm_gpiod_get_index(dev2, "test4", 0, flags);
  441. ut_asserteq(-EBUSY, PTR_ERR(desc_err));
  442. desc_err = devm_gpiod_get_index(dev, "test4", 1, flags);
  443. ut_asserteq(-EBUSY, PTR_ERR(desc_err));
  444. desc_err = devm_gpiod_get_index(dev2, "test4", 1, flags);
  445. ut_asserteq(-EBUSY, PTR_ERR(desc_err));
  446. desc_err = devm_gpiod_get_index_optional(dev, "test5", 0, flags);
  447. ut_asserteq_ptr(NULL, desc_err);
  448. desc_err = devm_gpiod_get_index_optional(dev2, "test5", 0, flags);
  449. ut_asserteq_ptr(NULL, desc_err);
  450. /* Try get GPIOs outside of the list */
  451. desc_err = devm_gpiod_get_index(dev, "test4", 2, flags);
  452. ut_assert(IS_ERR(desc_err));
  453. desc_err = devm_gpiod_get_index_optional(dev, "test5", 1, flags);
  454. ut_asserteq_ptr(NULL, desc_err);
  455. /* Manipulate the GPIOs */
  456. ut_assertok(dm_gpio_set_value(desc1, 1));
  457. ut_asserteq(1, dm_gpio_get_value(desc1));
  458. ut_assertok(dm_gpio_set_value(desc1, 0));
  459. ut_asserteq(0, dm_gpio_get_value(desc1));
  460. ut_assertok(dm_gpio_set_value(desc2, 1));
  461. ut_asserteq(1, dm_gpio_get_value(desc2));
  462. ut_assertok(dm_gpio_set_value(desc2, 0));
  463. ut_asserteq(0, dm_gpio_get_value(desc2));
  464. ut_assertok(dm_gpio_set_value(desc3, 1));
  465. ut_asserteq(1, dm_gpio_get_value(desc3));
  466. ut_assertok(dm_gpio_set_value(desc3, 0));
  467. ut_asserteq(0, dm_gpio_get_value(desc3));
  468. /* Check that the GPIO cannot be owned by more than one device */
  469. desc_err = devm_gpiod_get_index(dev2, "test4", 0, flags);
  470. ut_asserteq(-EBUSY, PTR_ERR(desc_err));
  471. desc_err = devm_gpiod_get_index(dev2, "test4", 1, flags);
  472. ut_asserteq(-EBUSY, PTR_ERR(desc_err));
  473. desc_err = devm_gpiod_get_index_optional(dev2, "test5", 0, flags);
  474. ut_asserteq_ptr(NULL, desc_err);
  475. /*
  476. * Release one GPIO and check that we can get it back using
  477. * 'another-test' and then 'a-test'
  478. */
  479. devm_gpiod_put(dev, desc2);
  480. desc2 = devm_gpiod_get_index(dev2, "test4", 1, flags);
  481. ut_assert(!IS_ERR(desc2));
  482. devm_gpiod_put(dev2, desc2);
  483. desc2 = devm_gpiod_get_index(dev, "test4", 1, flags);
  484. ut_assert(!IS_ERR(desc2));
  485. /* Release one GPIO before removing the 'a-test' dev. */
  486. devm_gpiod_put(dev, desc2);
  487. device_remove(dev, DM_REMOVE_NORMAL);
  488. /* All the GPIOs must have been freed. We should be able to claim
  489. * them with the 'another-test' device.
  490. */
  491. desc1 = devm_gpiod_get_index(dev2, "test4", 0, flags);
  492. ut_assert(!IS_ERR(desc1));
  493. desc2 = devm_gpiod_get_index(dev2, "test4", 1, flags);
  494. ut_assert(!IS_ERR(desc2));
  495. desc3 = devm_gpiod_get_index_optional(dev2, "test5", 0, flags);
  496. ut_assert(!IS_ERR(desc3));
  497. ut_assert(desc3);
  498. device_remove(dev2, DM_REMOVE_NORMAL);
  499. return 0;
  500. }
  501. DM_TEST(dm_test_gpio_devm, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
  502. static int dm_test_clrset_flags(struct unit_test_state *uts)
  503. {
  504. struct gpio_desc desc;
  505. struct udevice *dev;
  506. ulong flags;
  507. ut_assertok(uclass_get_device(UCLASS_TEST_FDT, 0, &dev));
  508. ut_asserteq_str("a-test", dev->name);
  509. ut_assertok(gpio_request_by_name(dev, "test-gpios", 1, &desc, 0));
  510. ut_assertok(dm_gpio_clrset_flags(&desc, GPIOD_MASK_DIR, GPIOD_IS_OUT));
  511. ut_assertok(dm_gpio_get_flags(&desc, &flags));
  512. ut_asserteq(GPIOD_IS_OUT, flags);
  513. ut_asserteq(GPIOD_IS_OUT, desc.flags);
  514. ut_asserteq(0, sandbox_gpio_get_value(desc.dev, desc.offset));
  515. ut_assertok(dm_gpio_clrset_flags(&desc, 0, GPIOD_IS_OUT_ACTIVE));
  516. ut_assertok(dm_gpio_get_flags(&desc, &flags));
  517. ut_asserteq(GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE, flags);
  518. ut_asserteq(GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE, desc.flags);
  519. ut_asserteq(1, sandbox_gpio_get_value(desc.dev, desc.offset));
  520. ut_asserteq(1, dm_gpio_get_value(&desc));
  521. ut_assertok(dm_gpio_clrset_flags(&desc, GPIOD_MASK_DIR, GPIOD_IS_IN));
  522. ut_assertok(dm_gpio_get_flags(&desc, &flags));
  523. ut_asserteq(GPIOD_IS_IN, flags & GPIOD_MASK_DIR);
  524. ut_asserteq(GPIOD_IS_IN, desc.flags & GPIOD_MASK_DIR);
  525. ut_assertok(dm_gpio_clrset_flags(&desc, GPIOD_MASK_PULL,
  526. GPIOD_PULL_UP));
  527. ut_assertok(dm_gpio_get_flags(&desc, &flags));
  528. ut_asserteq(GPIOD_IS_IN | GPIOD_PULL_UP, flags);
  529. ut_asserteq(GPIOD_IS_IN | GPIOD_PULL_UP, desc.flags);
  530. /* Check we cannot set both PULL_UP and PULL_DOWN */
  531. ut_asserteq(-EINVAL, dm_gpio_clrset_flags(&desc, 0, GPIOD_PULL_DOWN));
  532. return 0;
  533. }
  534. DM_TEST(dm_test_clrset_flags, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
  535. /* Check that an active-low GPIO works as expected */
  536. static int dm_test_clrset_flags_invert(struct unit_test_state *uts)
  537. {
  538. struct gpio_desc desc;
  539. struct udevice *dev;
  540. ulong flags;
  541. ut_assertok(uclass_get_device(UCLASS_TEST_FDT, 0, &dev));
  542. ut_asserteq_str("a-test", dev->name);
  543. ut_assertok(gpio_request_by_name(dev, "test-gpios", 1, &desc,
  544. GPIOD_IS_OUT | GPIOD_ACTIVE_LOW));
  545. /*
  546. * From this size we see it as 0 (active low), but the sandbox driver
  547. * sees the pin value high
  548. */
  549. ut_asserteq(0, dm_gpio_get_value(&desc));
  550. ut_asserteq(1, sandbox_gpio_get_value(desc.dev, desc.offset));
  551. ut_assertok(dm_gpio_set_value(&desc, 1));
  552. ut_asserteq(1, dm_gpio_get_value(&desc));
  553. ut_asserteq(0, sandbox_gpio_get_value(desc.dev, desc.offset));
  554. /* Do the same with dm_gpio_clrset_flags() */
  555. ut_assertok(dm_gpio_clrset_flags(&desc, GPIOD_IS_OUT_ACTIVE, 0));
  556. ut_asserteq(0, dm_gpio_get_value(&desc));
  557. ut_asserteq(1, sandbox_gpio_get_value(desc.dev, desc.offset));
  558. ut_assertok(dm_gpio_clrset_flags(&desc, 0, GPIOD_IS_OUT_ACTIVE));
  559. ut_asserteq(1, dm_gpio_get_value(&desc));
  560. ut_asserteq(0, sandbox_gpio_get_value(desc.dev, desc.offset));
  561. ut_assertok(dm_gpio_get_flags(&desc, &flags));
  562. ut_asserteq(GPIOD_IS_OUT | GPIOD_ACTIVE_LOW | GPIOD_IS_OUT_ACTIVE,
  563. flags);
  564. ut_asserteq(GPIOD_IS_OUT | GPIOD_ACTIVE_LOW | GPIOD_IS_OUT_ACTIVE,
  565. desc.flags);
  566. ut_assertok(dm_gpio_clrset_flags(&desc, GPIOD_IS_OUT_ACTIVE, 0));
  567. ut_assertok(dm_gpio_get_flags(&desc, &flags));
  568. ut_asserteq(GPIOD_IS_OUT | GPIOD_ACTIVE_LOW, flags);
  569. ut_asserteq(GPIOD_IS_OUT | GPIOD_ACTIVE_LOW, desc.flags);
  570. return 0;
  571. }
  572. DM_TEST(dm_test_clrset_flags_invert, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
  573. static int set_gpios(struct unit_test_state *uts, struct gpio_desc *desc,
  574. int count, uint value)
  575. {
  576. int i;
  577. for (i = 0; i < count; i++) {
  578. const uint mask = 1 << i;
  579. ut_assertok(sandbox_gpio_set_value(desc[i].dev, desc[i].offset,
  580. value & mask));
  581. }
  582. return 0;
  583. }
  584. /* Check that an active-low GPIO works as expected */
  585. static int dm_test_gpio_get_values_as_int(struct unit_test_state *uts)
  586. {
  587. const int gpio_count = 3;
  588. struct gpio_desc desc[gpio_count];
  589. struct udevice *dev;
  590. ut_assertok(uclass_get_device(UCLASS_TEST_FDT, 0, &dev));
  591. ut_asserteq_str("a-test", dev->name);
  592. ut_asserteq(3, gpio_request_list_by_name(dev, "test-gpios", desc,
  593. gpio_count, GPIOD_IS_IN));
  594. ut_assertok(set_gpios(uts, desc, gpio_count, 0));
  595. ut_asserteq(0, dm_gpio_get_values_as_int(desc, gpio_count));
  596. ut_assertok(set_gpios(uts, desc, gpio_count, 5));
  597. ut_asserteq(5, dm_gpio_get_values_as_int(desc, gpio_count));
  598. ut_assertok(set_gpios(uts, desc, gpio_count, 7));
  599. ut_asserteq(7, dm_gpio_get_values_as_int(desc, gpio_count));
  600. return 0;
  601. }
  602. DM_TEST(dm_test_gpio_get_values_as_int,
  603. UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
  604. /* Check that an active-low GPIO works as expected */
  605. static int dm_test_gpio_get_values_as_int_base3(struct unit_test_state *uts)
  606. {
  607. const int gpio_count = 3;
  608. struct gpio_desc desc[gpio_count];
  609. struct udevice *dev;
  610. ut_assertok(uclass_get_device(UCLASS_TEST_FDT, 0, &dev));
  611. ut_asserteq_str("a-test", dev->name);
  612. ut_asserteq(3, gpio_request_list_by_name(dev, "test-gpios", desc,
  613. gpio_count, GPIOD_IS_IN));
  614. /*
  615. * First test the sandbox GPIO driver works as expected. The external
  616. * pull resistor should be stronger than the internal one.
  617. */
  618. sandbox_gpio_set_flags(desc[0].dev, desc[0].offset,
  619. GPIOD_IS_IN | GPIOD_EXT_PULL_UP | GPIOD_PULL_UP);
  620. ut_asserteq(1, dm_gpio_get_value(desc));
  621. sandbox_gpio_set_flags(desc[0].dev, desc[0].offset, GPIOD_IS_IN |
  622. GPIOD_EXT_PULL_DOWN | GPIOD_PULL_UP);
  623. ut_asserteq(0, dm_gpio_get_value(desc));
  624. sandbox_gpio_set_flags(desc[0].dev, desc[0].offset,
  625. GPIOD_IS_IN | GPIOD_PULL_UP);
  626. ut_asserteq(1, dm_gpio_get_value(desc));
  627. sandbox_gpio_set_flags(desc[0].dev, desc[0].offset, GPIOD_PULL_DOWN);
  628. ut_asserteq(0, dm_gpio_get_value(desc));
  629. /*
  630. * Set up pins: pull-up (1), pull-down (0) and floating (2). This should
  631. * result in digits 2 0 1, i.e. 2 * 9 + 1 * 3 = 19
  632. */
  633. sandbox_gpio_set_flags(desc[0].dev, desc[0].offset, GPIOD_EXT_PULL_UP);
  634. sandbox_gpio_set_flags(desc[1].dev, desc[1].offset,
  635. GPIOD_EXT_PULL_DOWN);
  636. sandbox_gpio_set_flags(desc[2].dev, desc[2].offset, 0);
  637. ut_asserteq(19, dm_gpio_get_values_as_int_base3(desc, gpio_count));
  638. /*
  639. * Set up pins: floating (2), pull-up (1) and pull-down (0). This should
  640. * result in digits 0 1 2, i.e. 1 * 3 + 2 = 5
  641. */
  642. sandbox_gpio_set_flags(desc[0].dev, desc[0].offset, 0);
  643. sandbox_gpio_set_flags(desc[1].dev, desc[1].offset, GPIOD_EXT_PULL_UP);
  644. sandbox_gpio_set_flags(desc[2].dev, desc[2].offset,
  645. GPIOD_EXT_PULL_DOWN);
  646. ut_asserteq(5, dm_gpio_get_values_as_int_base3(desc, gpio_count));
  647. return 0;
  648. }
  649. DM_TEST(dm_test_gpio_get_values_as_int_base3,
  650. UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);