cmd/regulator.c

   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 <errno.h>
   8 #include <dm.h>
   9 #include <dm/uclass-internal.h>
  10 #include <power/regulator.h>
  11
  12 #define LIMIT_DEVNAME   20
  13 #define LIMIT_OFNAME    32
  14 #define LIMIT_INFO      18
  15
  16 static struct udevice *currdev;
  17
  18 static int failure(int ret)
  19 {
  20         printf("Error: %d (%s)\n", ret, errno_str(ret));
  21
  22         return CMD_RET_FAILURE;
  23 }
  24
  25 static int do_dev(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  26 {
  27         struct dm_regulator_uclass_platdata *uc_pdata;
  28         const char *name;
  29         int ret = -ENXIO;
  30
  31         switch (argc) {
  32         case 2:
  33                 name = argv[1];
  34                 ret = regulator_get_by_platname(name, &currdev);
  35                 if (ret) {
  36                         printf("Can't get the regulator: %s!\n", name);
  37                         return failure(ret);
  38                 }
  39         case 1:
  40                 if (!currdev) {
  41                         printf("Regulator device is not set!\n\n");
  42                         return CMD_RET_USAGE;
  43                 }
  44
  45                 uc_pdata = dev_get_uclass_platdata(currdev);
  46                 if (!uc_pdata) {
  47                         printf("%s: no regulator platform data!\n", currdev->name);
  48                         return failure(ret);
  49                 }
  50
  51                 printf("dev: %s @ %s\n", uc_pdata->name, currdev->name);
  52         }
  53
  54         return CMD_RET_SUCCESS;
  55 }
  56
  57 static int curr_dev_and_platdata(struct udevice **devp,
  58                                  struct dm_regulator_uclass_platdata **uc_pdata,
  59                                  bool allow_type_fixed)
  60 {
  61         *devp = NULL;
  62         *uc_pdata = NULL;
  63
  64         if (!currdev) {
  65                 printf("First, set the regulator device!\n");
  66                 return CMD_RET_FAILURE;
  67         }
  68
  69         *devp = currdev;
  70
  71         *uc_pdata = dev_get_uclass_platdata(*devp);
  72         if (!*uc_pdata) {
  73                 pr_err("Regulator: %s - missing platform data!\n", currdev->name);
  74                 return CMD_RET_FAILURE;
  75         }
  76
  77         if (!allow_type_fixed && (*uc_pdata)->type == REGULATOR_TYPE_FIXED) {
  78                 printf("Operation not allowed for fixed regulator!\n");
  79                 return CMD_RET_FAILURE;
  80         }
  81
  82         return CMD_RET_SUCCESS;
  83 }
  84
  85 static int do_list(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  86 {
  87         struct dm_regulator_uclass_platdata *uc_pdata;
  88         struct udevice *dev;
  89         int ret;
  90
  91         printf("| %-*.*s| %-*.*s| %s\n",
  92                LIMIT_DEVNAME, LIMIT_DEVNAME, "Device",
  93                LIMIT_OFNAME, LIMIT_OFNAME, "regulator-name",
  94                "Parent");
  95
  96         for (ret = uclass_find_first_device(UCLASS_REGULATOR, &dev); dev;
  97              ret = uclass_find_next_device(&dev)) {
  98                 if (ret)
  99                         continue;
 100
 101                 uc_pdata = dev_get_uclass_platdata(dev);
 102                 printf("| %-*.*s| %-*.*s| %s\n",
 103                        LIMIT_DEVNAME, LIMIT_DEVNAME, dev->name,
 104                        LIMIT_OFNAME, LIMIT_OFNAME, uc_pdata->name,
 105                        dev->parent->name);
 106         }
 107
 108         return ret;
 109 }
 110
 111 static int constraint(const char *name, int val, const char *val_name)
 112 {
 113         printf("%-*s", LIMIT_INFO, name);
 114         if (val < 0) {
 115                 printf(" %s (err: %d)\n", errno_str(val), val);
 116                 return val;
 117         }
 118
 119         if (val_name)
 120                 printf(" %d (%s)\n", val, val_name);
 121         else
 122                 printf(" %d\n", val);
 123
 124         return 0;
 125 }
 126
 127 static const char *get_mode_name(struct dm_regulator_mode *mode,
 128                                  int mode_count,
 129                                  int mode_id)
 130 {
 131         while (mode_count--) {
 132                 if (mode->id == mode_id)
 133                         return mode->name;
 134                 mode++;
 135         }
 136
 137         return NULL;
 138 }
 139
 140 static int do_info(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 141 {
 142         struct udevice *dev;
 143         struct dm_regulator_uclass_platdata *uc_pdata;
 144         struct dm_regulator_mode *modes;
 145         const char *parent_uc;
 146         int mode_count;
 147         int ret;
 148         int i;
 149
 150         ret = curr_dev_and_platdata(&dev, &uc_pdata, true);
 151         if (ret)
 152                 return ret;
 153
 154         parent_uc = dev_get_uclass_name(dev->parent);
 155
 156         printf("%s\n%-*s %s\n%-*s %s\n%-*s %s\n%-*s %s\n%-*s\n",
 157                "Regulator info:",
 158                LIMIT_INFO, "* regulator-name:", uc_pdata->name,
 159                LIMIT_INFO, "* device name:", dev->name,
 160                LIMIT_INFO, "* parent name:", dev->parent->name,
 161                LIMIT_INFO, "* parent uclass:", parent_uc,
 162                LIMIT_INFO, "* constraints:");
 163
 164         constraint("  - min uV:", uc_pdata->min_uV, NULL);
 165         constraint("  - max uV:", uc_pdata->max_uV, NULL);
 166         constraint("  - min uA:", uc_pdata->min_uA, NULL);
 167         constraint("  - max uA:", uc_pdata->max_uA, NULL);
 168         constraint("  - always on:", uc_pdata->always_on,
 169                    uc_pdata->always_on ? "true" : "false");
 170         constraint("  - boot on:", uc_pdata->boot_on,
 171                    uc_pdata->boot_on ? "true" : "false");
 172
 173         mode_count = regulator_mode(dev, &modes);
 174         constraint("* op modes:", mode_count, NULL);
 175
 176         for (i = 0; i < mode_count; i++, modes++)
 177                 constraint("  - mode id:", modes->id, modes->name);
 178
 179         return CMD_RET_SUCCESS;
 180 }
 181
 182 static void do_status_detail(struct udevice *dev,
 183                              struct dm_regulator_uclass_platdata *uc_pdata)
 184 {
 185         int current, value, mode;
 186         const char *mode_name;
 187         bool enabled;
 188
 189         printf("Regulator %s status:\n", uc_pdata->name);
 190
 191         enabled = regulator_get_enable(dev);
 192         constraint(" * enable:", enabled, enabled ? "true" : "false");
 193
 194         value = regulator_get_value(dev);
 195         constraint(" * value uV:", value, NULL);
 196
 197         current = regulator_get_current(dev);
 198         constraint(" * current uA:", current, NULL);
 199
 200         mode = regulator_get_mode(dev);
 201         mode_name = get_mode_name(uc_pdata->mode, uc_pdata->mode_count, mode);
 202         constraint(" * mode id:", mode, mode_name);
 203 }
 204
 205 static void do_status_line(struct udevice *dev)
 206 {
 207         struct dm_regulator_uclass_platdata *pdata;
 208         int current, value, mode;
 209         const char *mode_name;
 210         bool enabled;
 211
 212         pdata = dev_get_uclass_platdata(dev);
 213         enabled = regulator_get_enable(dev);
 214         value = regulator_get_value(dev);
 215         current = regulator_get_current(dev);
 216         mode = regulator_get_mode(dev);
 217         mode_name = get_mode_name(pdata->mode, pdata->mode_count, mode);
 218         printf("%-20s %-10s ", pdata->name, enabled ? "enabled" : "disabled");
 219         if (value >= 0)
 220                 printf("%10d ", value);
 221         else
 222                 printf("%10s ", "-");
 223         if (current >= 0)
 224                 printf("%10d ", current);
 225         else
 226                 printf("%10s ", "-");
 227         if (mode >= 0)
 228                 printf("%-10s", mode_name);
 229         else
 230                 printf("%-10s", "-");
 231         printf("\n");
 232 }
 233
 234 static int do_status(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 235 {
 236         struct dm_regulator_uclass_platdata *uc_pdata;
 237         struct udevice *dev;
 238         int ret;
 239
 240         if (currdev && (argc < 2 || strcmp(argv[1], "-a"))) {
 241                 ret = curr_dev_and_platdata(&dev, &uc_pdata, true);
 242                 if (ret)
 243                         return CMD_RET_FAILURE;
 244                 do_status_detail(dev, uc_pdata);
 245                 return 0;
 246         }
 247
 248         /* Show all of them in a list, probing them as needed */
 249         printf("%-20s %-10s %10s %10s %-10s\n", "Name", "Enabled", "uV", "mA",
 250                "Mode");
 251         for (ret = uclass_first_device(UCLASS_REGULATOR, &dev); dev;
 252              ret = uclass_next_device(&dev))
 253                 do_status_line(dev);
 254
 255         return CMD_RET_SUCCESS;
 256 }
 257
 258 static int do_value(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 259 {
 260         struct udevice *dev;
 261         struct dm_regulator_uclass_platdata *uc_pdata;
 262         int value;
 263         int force;
 264         int ret;
 265
 266         ret = curr_dev_and_platdata(&dev, &uc_pdata, argc == 1);
 267         if (ret)
 268                 return ret;
 269
 270         if (argc == 1) {
 271                 ret = regulator_get_value(dev);
 272                 if (ret < 0) {
 273                         printf("Regulator: %s - can't get the Voltage!\n",
 274                                uc_pdata->name);
 275                         return failure(ret);
 276                 }
 277
 278                 printf("%d uV\n", ret);
 279                 return CMD_RET_SUCCESS;
 280         }
 281
 282         if (argc == 3)
 283                 force = !strcmp("-f", argv[2]);
 284         else
 285                 force = 0;
 286
 287         value = simple_strtoul(argv[1], NULL, 0);
 288         if ((value < uc_pdata->min_uV || value > uc_pdata->max_uV) && !force) {
 289                 printf("Value exceeds regulator constraint limits %d..%d uV\n",
 290                        uc_pdata->min_uV, uc_pdata->max_uV);
 291                 return CMD_RET_FAILURE;
 292         }
 293
 294         if (!force)
 295                 ret = regulator_set_value(dev, value);
 296         else
 297                 ret = regulator_set_value_force(dev, value);
 298         if (ret) {
 299                 printf("Regulator: %s - can't set the Voltage!\n",
 300                        uc_pdata->name);
 301                 return failure(ret);
 302         }
 303
 304         return CMD_RET_SUCCESS;
 305 }
 306
 307 static int do_current(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 308 {
 309         struct udevice *dev;
 310         struct dm_regulator_uclass_platdata *uc_pdata;
 311         int current;
 312         int ret;
 313
 314         ret = curr_dev_and_platdata(&dev, &uc_pdata, argc == 1);
 315         if (ret)
 316                 return ret;
 317
 318         if (argc == 1) {
 319                 ret = regulator_get_current(dev);
 320                 if (ret < 0) {
 321                         printf("Regulator: %s - can't get the Current!\n",
 322                                uc_pdata->name);
 323                         return failure(ret);
 324                 }
 325
 326                 printf("%d uA\n", ret);
 327                 return CMD_RET_SUCCESS;
 328         }
 329
 330         current = simple_strtoul(argv[1], NULL, 0);
 331         if (current < uc_pdata->min_uA || current > uc_pdata->max_uA) {
 332                 printf("Current exceeds regulator constraint limits\n");
 333                 return CMD_RET_FAILURE;
 334         }
 335
 336         ret = regulator_set_current(dev, current);
 337         if (ret) {
 338                 printf("Regulator: %s - can't set the Current!\n",
 339                        uc_pdata->name);
 340                 return failure(ret);
 341         }
 342
 343         return CMD_RET_SUCCESS;
 344 }
 345
 346 static int do_mode(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 347 {
 348         struct udevice *dev;
 349         struct dm_regulator_uclass_platdata *uc_pdata;
 350         int mode;
 351         int ret;
 352
 353         ret = curr_dev_and_platdata(&dev, &uc_pdata, false);
 354         if (ret)
 355                 return ret;
 356
 357         if (argc == 1) {
 358                 ret = regulator_get_mode(dev);
 359                 if (ret < 0) {
 360                         printf("Regulator: %s - can't get the operation mode!\n",
 361                                uc_pdata->name);
 362                         return failure(ret);
 363                 }
 364
 365                 printf("mode id: %d\n", ret);
 366                 return CMD_RET_SUCCESS;
 367         }
 368
 369         mode = simple_strtoul(argv[1], NULL, 0);
 370
 371         ret = regulator_set_mode(dev, mode);
 372         if (ret) {
 373                 printf("Regulator: %s - can't set the operation mode!\n",
 374                        uc_pdata->name);
 375                 return failure(ret);
 376         }
 377
 378         return CMD_RET_SUCCESS;
 379 }
 380
 381 static int do_enable(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 382 {
 383         struct udevice *dev;
 384         struct dm_regulator_uclass_platdata *uc_pdata;
 385         int ret;
 386
 387         ret = curr_dev_and_platdata(&dev, &uc_pdata, true);
 388         if (ret)
 389                 return ret;
 390
 391         ret = regulator_set_enable(dev, true);
 392         if (ret) {
 393                 printf("Regulator: %s - can't enable!\n", uc_pdata->name);
 394                 return failure(ret);
 395         }
 396
 397         return CMD_RET_SUCCESS;
 398 }
 399
 400 static int do_disable(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 401 {
 402         struct udevice *dev;
 403         struct dm_regulator_uclass_platdata *uc_pdata;
 404         int ret;
 405
 406         ret = curr_dev_and_platdata(&dev, &uc_pdata, true);
 407         if (ret)
 408                 return ret;
 409
 410         ret = regulator_set_enable(dev, false);
 411         if (ret) {
 412                 printf("Regulator: %s - can't disable!\n", uc_pdata->name);
 413                 return failure(ret);
 414         }
 415
 416         return CMD_RET_SUCCESS;
 417 }
 418
 419 static cmd_tbl_t subcmd[] = {
 420         U_BOOT_CMD_MKENT(dev, 2, 1, do_dev, "", ""),
 421         U_BOOT_CMD_MKENT(list, 1, 1, do_list, "", ""),
 422         U_BOOT_CMD_MKENT(info, 2, 1, do_info, "", ""),
 423         U_BOOT_CMD_MKENT(status, 2, 1, do_status, "", ""),
 424         U_BOOT_CMD_MKENT(value, 3, 1, do_value, "", ""),
 425         U_BOOT_CMD_MKENT(current, 3, 1, do_current, "", ""),
 426         U_BOOT_CMD_MKENT(mode, 2, 1, do_mode, "", ""),
 427         U_BOOT_CMD_MKENT(enable, 1, 1, do_enable, "", ""),
 428         U_BOOT_CMD_MKENT(disable, 1, 1, do_disable, "", ""),
 429 };
 430
 431 static int do_regulator(cmd_tbl_t *cmdtp, int flag, int argc,
 432                         char * const argv[])
 433 {
 434         cmd_tbl_t *cmd;
 435
 436         argc--;
 437         argv++;
 438
 439         cmd = find_cmd_tbl(argv[0], subcmd, ARRAY_SIZE(subcmd));
 440         if (cmd == NULL || argc > cmd->maxargs)
 441                 return CMD_RET_USAGE;
 442
 443         return cmd->cmd(cmdtp, flag, argc, argv);
 444 }
 445
 446 U_BOOT_CMD(regulator, CONFIG_SYS_MAXARGS, 1, do_regulator,
 447         "uclass operations",
 448         "list             - list UCLASS regulator devices\n"
 449         "regulator dev [regulator-name] - show/[set] operating regulator device\n"
 450         "regulator info                 - print constraints info\n"
 451         "regulator status [-a]          - print operating status [for all]\n"
 452         "regulator value [val] [-f]     - print/[set] voltage value [uV] (force)\n"
 453         "regulator current [val]        - print/[set] current value [uA]\n"
 454         "regulator mode [id]            - print/[set] operating mode id\n"
 455         "regulator enable               - enable the regulator output\n"
 456         "regulator disable              - disable the regulator output\n"
 457 );