regulator.c 11 KB

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  1. // SPDX-License-Identifier: GPL-2.0+
  2. /*
  3. * Copyright (C) 2014-2015 Samsung Electronics
  4. * Przemyslaw Marczak <p.marczak@samsung.com>
  5. */
  6. #include <common.h>
  7. #include <command.h>
  8. #include <errno.h>
  9. #include <dm.h>
  10. #include <dm/uclass-internal.h>
  11. #include <power/regulator.h>
  12. #define LIMIT_DEVNAME 20
  13. #define LIMIT_OFNAME 32
  14. #define LIMIT_INFO 18
  15. static struct udevice *currdev;
  16. static int failure(int ret)
  17. {
  18. printf("Error: %d (%s)\n", ret, errno_str(ret));
  19. return CMD_RET_FAILURE;
  20. }
  21. static int do_dev(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
  22. {
  23. struct dm_regulator_uclass_plat *uc_pdata;
  24. const char *name;
  25. int ret = -ENXIO;
  26. switch (argc) {
  27. case 2:
  28. name = argv[1];
  29. ret = regulator_get_by_platname(name, &currdev);
  30. if (ret) {
  31. printf("Can't get the regulator: %s!\n", name);
  32. return failure(ret);
  33. }
  34. fallthrough;
  35. case 1:
  36. if (!currdev) {
  37. printf("Regulator device is not set!\n\n");
  38. return CMD_RET_USAGE;
  39. }
  40. uc_pdata = dev_get_uclass_plat(currdev);
  41. if (!uc_pdata) {
  42. printf("%s: no regulator platform data!\n", currdev->name);
  43. return failure(ret);
  44. }
  45. printf("dev: %s @ %s\n", uc_pdata->name, currdev->name);
  46. }
  47. return CMD_RET_SUCCESS;
  48. }
  49. static int curr_dev_and_plat(struct udevice **devp,
  50. struct dm_regulator_uclass_plat **uc_pdata,
  51. bool allow_type_fixed)
  52. {
  53. *devp = NULL;
  54. *uc_pdata = NULL;
  55. if (!currdev) {
  56. printf("First, set the regulator device!\n");
  57. return CMD_RET_FAILURE;
  58. }
  59. *devp = currdev;
  60. *uc_pdata = dev_get_uclass_plat(*devp);
  61. if (!*uc_pdata) {
  62. pr_err("Regulator: %s - missing platform data!\n", currdev->name);
  63. return CMD_RET_FAILURE;
  64. }
  65. if (!allow_type_fixed && (*uc_pdata)->type == REGULATOR_TYPE_FIXED) {
  66. printf("Operation not allowed for fixed regulator!\n");
  67. return CMD_RET_FAILURE;
  68. }
  69. return CMD_RET_SUCCESS;
  70. }
  71. static int do_list(struct cmd_tbl *cmdtp, int flag, int argc,
  72. char *const argv[])
  73. {
  74. struct dm_regulator_uclass_plat *uc_pdata;
  75. struct udevice *dev;
  76. int ret;
  77. printf("| %-*.*s| %-*.*s| %s\n",
  78. LIMIT_DEVNAME, LIMIT_DEVNAME, "Device",
  79. LIMIT_OFNAME, LIMIT_OFNAME, "regulator-name",
  80. "Parent");
  81. for (ret = uclass_find_first_device(UCLASS_REGULATOR, &dev); dev;
  82. ret = uclass_find_next_device(&dev)) {
  83. if (ret)
  84. continue;
  85. uc_pdata = dev_get_uclass_plat(dev);
  86. printf("| %-*.*s| %-*.*s| %s\n",
  87. LIMIT_DEVNAME, LIMIT_DEVNAME, dev->name,
  88. LIMIT_OFNAME, LIMIT_OFNAME, uc_pdata->name,
  89. dev->parent->name);
  90. }
  91. return ret;
  92. }
  93. static int constraint(const char *name, int val, const char *val_name)
  94. {
  95. printf("%-*s", LIMIT_INFO, name);
  96. if (val < 0) {
  97. printf(" %s (err: %d)\n", errno_str(val), val);
  98. return val;
  99. }
  100. if (val_name)
  101. printf(" %d (%s)\n", val, val_name);
  102. else
  103. printf(" %d\n", val);
  104. return 0;
  105. }
  106. static const char *get_mode_name(struct dm_regulator_mode *mode,
  107. int mode_count,
  108. int mode_id)
  109. {
  110. while (mode_count--) {
  111. if (mode->id == mode_id)
  112. return mode->name;
  113. mode++;
  114. }
  115. return NULL;
  116. }
  117. static int do_info(struct cmd_tbl *cmdtp, int flag, int argc,
  118. char *const argv[])
  119. {
  120. struct udevice *dev;
  121. struct dm_regulator_uclass_plat *uc_pdata;
  122. struct dm_regulator_mode *modes;
  123. const char *parent_uc;
  124. int mode_count;
  125. int ret;
  126. int i;
  127. ret = curr_dev_and_plat(&dev, &uc_pdata, true);
  128. if (ret)
  129. return ret;
  130. parent_uc = dev_get_uclass_name(dev->parent);
  131. printf("%s\n%-*s %s\n%-*s %s\n%-*s %s\n%-*s %s\n%-*s\n",
  132. "Regulator info:",
  133. LIMIT_INFO, "* regulator-name:", uc_pdata->name,
  134. LIMIT_INFO, "* device name:", dev->name,
  135. LIMIT_INFO, "* parent name:", dev->parent->name,
  136. LIMIT_INFO, "* parent uclass:", parent_uc,
  137. LIMIT_INFO, "* constraints:");
  138. constraint(" - min uV:", uc_pdata->min_uV, NULL);
  139. constraint(" - max uV:", uc_pdata->max_uV, NULL);
  140. constraint(" - min uA:", uc_pdata->min_uA, NULL);
  141. constraint(" - max uA:", uc_pdata->max_uA, NULL);
  142. constraint(" - always on:", uc_pdata->always_on,
  143. uc_pdata->always_on ? "true" : "false");
  144. constraint(" - boot on:", uc_pdata->boot_on,
  145. uc_pdata->boot_on ? "true" : "false");
  146. mode_count = regulator_mode(dev, &modes);
  147. constraint("* op modes:", mode_count, NULL);
  148. for (i = 0; i < mode_count; i++, modes++)
  149. constraint(" - mode id:", modes->id, modes->name);
  150. return CMD_RET_SUCCESS;
  151. }
  152. static void do_status_detail(struct udevice *dev,
  153. struct dm_regulator_uclass_plat *uc_pdata)
  154. {
  155. int current, value, mode;
  156. const char *mode_name;
  157. bool enabled;
  158. printf("Regulator %s status:\n", uc_pdata->name);
  159. enabled = regulator_get_enable(dev);
  160. constraint(" * enable:", enabled, enabled ? "true" : "false");
  161. value = regulator_get_value(dev);
  162. constraint(" * value uV:", value, NULL);
  163. current = regulator_get_current(dev);
  164. constraint(" * current uA:", current, NULL);
  165. mode = regulator_get_mode(dev);
  166. mode_name = get_mode_name(uc_pdata->mode, uc_pdata->mode_count, mode);
  167. constraint(" * mode id:", mode, mode_name);
  168. }
  169. static void do_status_line(struct udevice *dev, int status)
  170. {
  171. struct dm_regulator_uclass_plat *pdata;
  172. int current, value, mode;
  173. const char *mode_name;
  174. bool enabled;
  175. pdata = dev_get_uclass_plat(dev);
  176. enabled = regulator_get_enable(dev);
  177. value = regulator_get_value(dev);
  178. current = regulator_get_current(dev);
  179. mode = regulator_get_mode(dev);
  180. mode_name = get_mode_name(pdata->mode, pdata->mode_count, mode);
  181. printf("%-20s %-10s ", pdata->name, enabled ? "enabled" : "disabled");
  182. if (value >= 0)
  183. printf("%10d ", value);
  184. else
  185. printf("%10s ", "-");
  186. if (current >= 0)
  187. printf("%10d ", current);
  188. else
  189. printf("%10s ", "-");
  190. if (mode >= 0)
  191. printf("%-10s", mode_name);
  192. else
  193. printf("%-10s", "-");
  194. printf(" %i", status);
  195. printf("\n");
  196. }
  197. static int do_status(struct cmd_tbl *cmdtp, int flag, int argc,
  198. char *const argv[])
  199. {
  200. struct dm_regulator_uclass_plat *uc_pdata;
  201. struct udevice *dev;
  202. int ret;
  203. if (currdev && (argc < 2 || strcmp(argv[1], "-a"))) {
  204. ret = curr_dev_and_plat(&dev, &uc_pdata, true);
  205. if (ret)
  206. return CMD_RET_FAILURE;
  207. do_status_detail(dev, uc_pdata);
  208. return 0;
  209. }
  210. /* Show all of them in a list, probing them as needed */
  211. printf("%-20s %-10s %10s %10s %-10s %s\n", "Name", "Enabled", "uV", "mA",
  212. "Mode", "Status");
  213. for (ret = uclass_first_device_check(UCLASS_REGULATOR, &dev); dev;
  214. ret = uclass_next_device_check(&dev))
  215. do_status_line(dev, ret);
  216. return CMD_RET_SUCCESS;
  217. }
  218. static int do_value(struct cmd_tbl *cmdtp, int flag, int argc,
  219. char *const argv[])
  220. {
  221. struct udevice *dev;
  222. struct dm_regulator_uclass_plat *uc_pdata;
  223. int value;
  224. int force;
  225. int ret;
  226. ret = curr_dev_and_plat(&dev, &uc_pdata, argc == 1);
  227. if (ret)
  228. return ret;
  229. if (argc == 1) {
  230. ret = regulator_get_value(dev);
  231. if (ret < 0) {
  232. printf("Regulator: %s - can't get the Voltage!\n",
  233. uc_pdata->name);
  234. return failure(ret);
  235. }
  236. printf("%d uV\n", ret);
  237. return CMD_RET_SUCCESS;
  238. }
  239. if (argc == 3)
  240. force = !strcmp("-f", argv[2]);
  241. else
  242. force = 0;
  243. value = simple_strtoul(argv[1], NULL, 0);
  244. if ((value < uc_pdata->min_uV || value > uc_pdata->max_uV) && !force) {
  245. printf("Value exceeds regulator constraint limits %d..%d uV\n",
  246. uc_pdata->min_uV, uc_pdata->max_uV);
  247. return CMD_RET_FAILURE;
  248. }
  249. if (!force)
  250. ret = regulator_set_value(dev, value);
  251. else
  252. ret = regulator_set_value_force(dev, value);
  253. if (ret) {
  254. printf("Regulator: %s - can't set the Voltage!\n",
  255. uc_pdata->name);
  256. return failure(ret);
  257. }
  258. return CMD_RET_SUCCESS;
  259. }
  260. static int do_current(struct cmd_tbl *cmdtp, int flag, int argc,
  261. char *const argv[])
  262. {
  263. struct udevice *dev;
  264. struct dm_regulator_uclass_plat *uc_pdata;
  265. int current;
  266. int ret;
  267. ret = curr_dev_and_plat(&dev, &uc_pdata, argc == 1);
  268. if (ret)
  269. return ret;
  270. if (argc == 1) {
  271. ret = regulator_get_current(dev);
  272. if (ret < 0) {
  273. printf("Regulator: %s - can't get the Current!\n",
  274. uc_pdata->name);
  275. return failure(ret);
  276. }
  277. printf("%d uA\n", ret);
  278. return CMD_RET_SUCCESS;
  279. }
  280. current = simple_strtoul(argv[1], NULL, 0);
  281. if (current < uc_pdata->min_uA || current > uc_pdata->max_uA) {
  282. printf("Current exceeds regulator constraint limits\n");
  283. return CMD_RET_FAILURE;
  284. }
  285. ret = regulator_set_current(dev, current);
  286. if (ret) {
  287. printf("Regulator: %s - can't set the Current!\n",
  288. uc_pdata->name);
  289. return failure(ret);
  290. }
  291. return CMD_RET_SUCCESS;
  292. }
  293. static int do_mode(struct cmd_tbl *cmdtp, int flag, int argc,
  294. char *const argv[])
  295. {
  296. struct udevice *dev;
  297. struct dm_regulator_uclass_plat *uc_pdata;
  298. int mode;
  299. int ret;
  300. ret = curr_dev_and_plat(&dev, &uc_pdata, false);
  301. if (ret)
  302. return ret;
  303. if (argc == 1) {
  304. ret = regulator_get_mode(dev);
  305. if (ret < 0) {
  306. printf("Regulator: %s - can't get the operation mode!\n",
  307. uc_pdata->name);
  308. return failure(ret);
  309. }
  310. printf("mode id: %d\n", ret);
  311. return CMD_RET_SUCCESS;
  312. }
  313. mode = simple_strtoul(argv[1], NULL, 0);
  314. ret = regulator_set_mode(dev, mode);
  315. if (ret) {
  316. printf("Regulator: %s - can't set the operation mode!\n",
  317. uc_pdata->name);
  318. return failure(ret);
  319. }
  320. return CMD_RET_SUCCESS;
  321. }
  322. static int do_enable(struct cmd_tbl *cmdtp, int flag, int argc,
  323. char *const argv[])
  324. {
  325. struct udevice *dev;
  326. struct dm_regulator_uclass_plat *uc_pdata;
  327. int ret;
  328. ret = curr_dev_and_plat(&dev, &uc_pdata, true);
  329. if (ret)
  330. return ret;
  331. ret = regulator_set_enable(dev, true);
  332. if (ret) {
  333. printf("Regulator: %s - can't enable!\n", uc_pdata->name);
  334. return failure(ret);
  335. }
  336. return CMD_RET_SUCCESS;
  337. }
  338. static int do_disable(struct cmd_tbl *cmdtp, int flag, int argc,
  339. char *const argv[])
  340. {
  341. struct udevice *dev;
  342. struct dm_regulator_uclass_plat *uc_pdata;
  343. int ret;
  344. ret = curr_dev_and_plat(&dev, &uc_pdata, true);
  345. if (ret)
  346. return ret;
  347. ret = regulator_set_enable(dev, false);
  348. if (ret) {
  349. printf("Regulator: %s - can't disable!\n", uc_pdata->name);
  350. return failure(ret);
  351. }
  352. return CMD_RET_SUCCESS;
  353. }
  354. static struct cmd_tbl subcmd[] = {
  355. U_BOOT_CMD_MKENT(dev, 2, 1, do_dev, "", ""),
  356. U_BOOT_CMD_MKENT(list, 1, 1, do_list, "", ""),
  357. U_BOOT_CMD_MKENT(info, 2, 1, do_info, "", ""),
  358. U_BOOT_CMD_MKENT(status, 2, 1, do_status, "", ""),
  359. U_BOOT_CMD_MKENT(value, 3, 1, do_value, "", ""),
  360. U_BOOT_CMD_MKENT(current, 3, 1, do_current, "", ""),
  361. U_BOOT_CMD_MKENT(mode, 2, 1, do_mode, "", ""),
  362. U_BOOT_CMD_MKENT(enable, 1, 1, do_enable, "", ""),
  363. U_BOOT_CMD_MKENT(disable, 1, 1, do_disable, "", ""),
  364. };
  365. static int do_regulator(struct cmd_tbl *cmdtp, int flag, int argc,
  366. char *const argv[])
  367. {
  368. struct cmd_tbl *cmd;
  369. argc--;
  370. argv++;
  371. cmd = find_cmd_tbl(argv[0], subcmd, ARRAY_SIZE(subcmd));
  372. if (cmd == NULL || argc > cmd->maxargs)
  373. return CMD_RET_USAGE;
  374. return cmd->cmd(cmdtp, flag, argc, argv);
  375. }
  376. U_BOOT_CMD(regulator, CONFIG_SYS_MAXARGS, 1, do_regulator,
  377. "uclass operations",
  378. "list - list UCLASS regulator devices\n"
  379. "regulator dev [regulator-name] - show/[set] operating regulator device\n"
  380. "regulator info - print constraints info\n"
  381. "regulator status [-a] - print operating status [for all]\n"
  382. "regulator value [val] [-f] - print/[set] voltage value [uV] (force)\n"
  383. "regulator current [val] - print/[set] current value [uA]\n"
  384. "regulator mode [id] - print/[set] operating mode id\n"
  385. "regulator enable - enable the regulator output\n"
  386. "regulator disable - disable the regulator output\n"
  387. );