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