drivers/power/supply/test_power.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Power supply driver for testing.
   4  *
   5  * Copyright 2010  Anton Vorontsov <cbouatmailru@gmail.com>
   6  *
   7  * Dynamic module parameter code from the Virtual Battery Driver
   8  * Copyright (C) 2008 Pylone, Inc.
   9  * By: Masashi YOKOTA <yokota@pylone.jp>
  10  * Originally found here:
  11  * http://downloads.pylone.jp/src/virtual_battery/virtual_battery-0.0.1.tar.bz2
  12  */
  13
  14 #include <linux/kernel.h>
  15 #include <linux/module.h>
  16 #include <linux/power_supply.h>
  17 #include <linux/errno.h>
  18 #include <linux/delay.h>
  19 #include <generated/utsrelease.h>
  20
  21 enum test_power_id {
  22         TEST_AC,
  23         TEST_BATTERY,
  24         TEST_USB,
  25         TEST_POWER_NUM,
  26 };
  27
  28 static int ac_online                    = 1;
  29 static int usb_online                   = 1;
  30 static int battery_status               = POWER_SUPPLY_STATUS_DISCHARGING;
  31 static int battery_health               = POWER_SUPPLY_HEALTH_GOOD;
  32 static int battery_present              = 1; /* true */
  33 static int battery_technology           = POWER_SUPPLY_TECHNOLOGY_LION;
  34 static int battery_capacity             = 50;
  35 static int battery_voltage              = 3300;
  36 static int battery_charge_counter       = -1000;
  37 static int battery_current              = -1600;
  38 static enum power_supply_charge_behaviour battery_charge_behaviour =
  39         POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO;
  40
  41 static bool module_initialized;
  42
  43 static int test_power_get_ac_property(struct power_supply *psy,
  44                                       enum power_supply_property psp,
  45                                       union power_supply_propval *val)
  46 {
  47         switch (psp) {
  48         case POWER_SUPPLY_PROP_ONLINE:
  49                 val->intval = ac_online;
  50                 break;
  51         default:
  52                 return -EINVAL;
  53         }
  54         return 0;
  55 }
  56
  57 static int test_power_get_usb_property(struct power_supply *psy,
  58                                       enum power_supply_property psp,
  59                                       union power_supply_propval *val)
  60 {
  61         switch (psp) {
  62         case POWER_SUPPLY_PROP_ONLINE:
  63                 val->intval = usb_online;
  64                 break;
  65         default:
  66                 return -EINVAL;
  67         }
  68         return 0;
  69 }
  70
  71 static int test_power_get_battery_property(struct power_supply *psy,
  72                                            enum power_supply_property psp,
  73                                            union power_supply_propval *val)
  74 {
  75         switch (psp) {
  76         case POWER_SUPPLY_PROP_MODEL_NAME:
  77                 val->strval = "Test battery";
  78                 break;
  79         case POWER_SUPPLY_PROP_MANUFACTURER:
  80                 val->strval = "Linux";
  81                 break;
  82         case POWER_SUPPLY_PROP_SERIAL_NUMBER:
  83                 val->strval = UTS_RELEASE;
  84                 break;
  85         case POWER_SUPPLY_PROP_STATUS:
  86                 val->intval = battery_status;
  87                 break;
  88         case POWER_SUPPLY_PROP_CHARGE_TYPE:
  89                 val->intval = POWER_SUPPLY_CHARGE_TYPE_FAST;
  90                 break;
  91         case POWER_SUPPLY_PROP_HEALTH:
  92                 val->intval = battery_health;
  93                 break;
  94         case POWER_SUPPLY_PROP_PRESENT:
  95                 val->intval = battery_present;
  96                 break;
  97         case POWER_SUPPLY_PROP_TECHNOLOGY:
  98                 val->intval = battery_technology;
  99                 break;
 100         case POWER_SUPPLY_PROP_CAPACITY_LEVEL:
 101                 val->intval = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
 102                 break;
 103         case POWER_SUPPLY_PROP_CAPACITY:
 104         case POWER_SUPPLY_PROP_CHARGE_NOW:
 105                 val->intval = battery_capacity;
 106                 break;
 107         case POWER_SUPPLY_PROP_CHARGE_COUNTER:
 108                 val->intval = battery_charge_counter;
 109                 break;
 110         case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
 111         case POWER_SUPPLY_PROP_CHARGE_FULL:
 112                 val->intval = 100;
 113                 break;
 114         case POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG:
 115         case POWER_SUPPLY_PROP_TIME_TO_FULL_NOW:
 116                 val->intval = 3600;
 117                 break;
 118         case POWER_SUPPLY_PROP_TEMP:
 119                 val->intval = 26;
 120                 break;
 121         case POWER_SUPPLY_PROP_VOLTAGE_NOW:
 122                 val->intval = battery_voltage;
 123                 break;
 124         case POWER_SUPPLY_PROP_CURRENT_AVG:
 125         case POWER_SUPPLY_PROP_CURRENT_NOW:
 126                 val->intval = battery_current;
 127                 break;
 128         case POWER_SUPPLY_PROP_CHARGE_BEHAVIOUR:
 129                 val->intval = battery_charge_behaviour;
 130                 break;
 131         default:
 132                 pr_info("%s: some properties deliberately report errors.\n",
 133                         __func__);
 134                 return -EINVAL;
 135         }
 136         return 0;
 137 }
 138
 139 static int test_power_battery_property_is_writeable(struct power_supply *psy,
 140                                                     enum power_supply_property psp)
 141 {
 142         return psp == POWER_SUPPLY_PROP_CHARGE_BEHAVIOUR;
 143 }
 144
 145 static int test_power_set_battery_property(struct power_supply *psy,
 146                                            enum power_supply_property psp,
 147                                            const union power_supply_propval *val)
 148 {
 149         switch (psp) {
 150         case POWER_SUPPLY_PROP_CHARGE_BEHAVIOUR:
 151                 if (val->intval < 0 ||
 152                     val->intval >= BITS_PER_TYPE(typeof(psy->desc->charge_behaviours)) ||
 153                     !(BIT(val->intval) & psy->desc->charge_behaviours)) {
 154                         return -EINVAL;
 155                 }
 156                 battery_charge_behaviour = val->intval;
 157                 break;
 158         default:
 159                 return -EINVAL;
 160         }
 161         return 0;
 162 }
 163
 164 static enum power_supply_property test_power_ac_props[] = {
 165         POWER_SUPPLY_PROP_ONLINE,
 166 };
 167
 168 static enum power_supply_property test_power_battery_props[] = {
 169         POWER_SUPPLY_PROP_STATUS,
 170         POWER_SUPPLY_PROP_CHARGE_TYPE,
 171         POWER_SUPPLY_PROP_HEALTH,
 172         POWER_SUPPLY_PROP_PRESENT,
 173         POWER_SUPPLY_PROP_TECHNOLOGY,
 174         POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
 175         POWER_SUPPLY_PROP_CHARGE_FULL,
 176         POWER_SUPPLY_PROP_CHARGE_NOW,
 177         POWER_SUPPLY_PROP_CHARGE_COUNTER,
 178         POWER_SUPPLY_PROP_CAPACITY,
 179         POWER_SUPPLY_PROP_CAPACITY_LEVEL,
 180         POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG,
 181         POWER_SUPPLY_PROP_TIME_TO_FULL_NOW,
 182         POWER_SUPPLY_PROP_MODEL_NAME,
 183         POWER_SUPPLY_PROP_MANUFACTURER,
 184         POWER_SUPPLY_PROP_SERIAL_NUMBER,
 185         POWER_SUPPLY_PROP_TEMP,
 186         POWER_SUPPLY_PROP_VOLTAGE_NOW,
 187         POWER_SUPPLY_PROP_CURRENT_AVG,
 188         POWER_SUPPLY_PROP_CURRENT_NOW,
 189         POWER_SUPPLY_PROP_CHARGE_BEHAVIOUR,
 190 };
 191
 192 static char *test_power_ac_supplied_to[] = {
 193         "test_battery",
 194 };
 195
 196 static struct power_supply *test_power_supplies[TEST_POWER_NUM];
 197
 198 static const struct power_supply_desc test_power_desc[] = {
 199         [TEST_AC] = {
 200                 .name = "test_ac",
 201                 .type = POWER_SUPPLY_TYPE_MAINS,
 202                 .properties = test_power_ac_props,
 203                 .num_properties = ARRAY_SIZE(test_power_ac_props),
 204                 .get_property = test_power_get_ac_property,
 205         },
 206         [TEST_BATTERY] = {
 207                 .name = "test_battery",
 208                 .type = POWER_SUPPLY_TYPE_BATTERY,
 209                 .properties = test_power_battery_props,
 210                 .num_properties = ARRAY_SIZE(test_power_battery_props),
 211                 .get_property = test_power_get_battery_property,
 212                 .set_property = test_power_set_battery_property,
 213                 .property_is_writeable = test_power_battery_property_is_writeable,
 214                 .charge_behaviours = BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO)
 215                                    | BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE)
 216                                    | BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE),
 217         },
 218         [TEST_USB] = {
 219                 .name = "test_usb",
 220                 .type = POWER_SUPPLY_TYPE_USB,
 221                 .properties = test_power_ac_props,
 222                 .num_properties = ARRAY_SIZE(test_power_ac_props),
 223                 .get_property = test_power_get_usb_property,
 224         },
 225 };
 226
 227 static const struct power_supply_config test_power_configs[] = {
 228         {
 229                 /* test_ac */
 230                 .supplied_to = test_power_ac_supplied_to,
 231                 .num_supplicants = ARRAY_SIZE(test_power_ac_supplied_to),
 232         }, {
 233                 /* test_battery */
 234         }, {
 235                 /* test_usb */
 236                 .supplied_to = test_power_ac_supplied_to,
 237                 .num_supplicants = ARRAY_SIZE(test_power_ac_supplied_to),
 238         },
 239 };
 240
 241 static int __init test_power_init(void)
 242 {
 243         int i;
 244         int ret;
 245
 246         BUILD_BUG_ON(TEST_POWER_NUM != ARRAY_SIZE(test_power_supplies));
 247         BUILD_BUG_ON(TEST_POWER_NUM != ARRAY_SIZE(test_power_configs));
 248
 249         for (i = 0; i < ARRAY_SIZE(test_power_supplies); i++) {
 250                 test_power_supplies[i] = power_supply_register(NULL,
 251                                                 &test_power_desc[i],
 252                                                 &test_power_configs[i]);
 253                 if (IS_ERR(test_power_supplies[i])) {
 254                         pr_err("%s: failed to register %s\n", __func__,
 255                                 test_power_desc[i].name);
 256                         ret = PTR_ERR(test_power_supplies[i]);
 257                         goto failed;
 258                 }
 259         }
 260
 261         module_initialized = true;
 262         return 0;
 263 failed:
 264         while (--i >= 0)
 265                 power_supply_unregister(test_power_supplies[i]);
 266         return ret;
 267 }
 268 module_init(test_power_init);
 269
 270 static void __exit test_power_exit(void)
 271 {
 272         int i;
 273
 274         /* Let's see how we handle changes... */
 275         ac_online = 0;
 276         usb_online = 0;
 277         battery_status = POWER_SUPPLY_STATUS_DISCHARGING;
 278         for (i = 0; i < ARRAY_SIZE(test_power_supplies); i++)
 279                 power_supply_changed(test_power_supplies[i]);
 280         pr_info("%s: 'changed' event sent, sleeping for 10 seconds...\n",
 281                 __func__);
 282         ssleep(10);
 283
 284         for (i = 0; i < ARRAY_SIZE(test_power_supplies); i++)
 285                 power_supply_unregister(test_power_supplies[i]);
 286
 287         module_initialized = false;
 288 }
 289 module_exit(test_power_exit);
 290
 291
 292
 293 #define MAX_KEYLENGTH 256
 294 struct battery_property_map {
 295         int value;
 296         char const *key;
 297 };
 298
 299 static struct battery_property_map map_ac_online[] = {
 300         { 0,  "off"  },
 301         { 1,  "on" },
 302         { -1, NULL  },
 303 };
 304
 305 static struct battery_property_map map_status[] = {
 306         { POWER_SUPPLY_STATUS_CHARGING,     "charging"     },
 307         { POWER_SUPPLY_STATUS_DISCHARGING,  "discharging"  },
 308         { POWER_SUPPLY_STATUS_NOT_CHARGING, "not-charging" },
 309         { POWER_SUPPLY_STATUS_FULL,         "full"         },
 310         { -1,                               NULL           },
 311 };
 312
 313 static struct battery_property_map map_health[] = {
 314         { POWER_SUPPLY_HEALTH_GOOD,           "good"        },
 315         { POWER_SUPPLY_HEALTH_OVERHEAT,       "overheat"    },
 316         { POWER_SUPPLY_HEALTH_DEAD,           "dead"        },
 317         { POWER_SUPPLY_HEALTH_OVERVOLTAGE,    "overvoltage" },
 318         { POWER_SUPPLY_HEALTH_UNSPEC_FAILURE, "failure"     },
 319         { -1,                                 NULL          },
 320 };
 321
 322 static struct battery_property_map map_present[] = {
 323         { 0,  "false" },
 324         { 1,  "true"  },
 325         { -1, NULL    },
 326 };
 327
 328 static struct battery_property_map map_technology[] = {
 329         { POWER_SUPPLY_TECHNOLOGY_NiMH, "NiMH" },
 330         { POWER_SUPPLY_TECHNOLOGY_LION, "LION" },
 331         { POWER_SUPPLY_TECHNOLOGY_LIPO, "LIPO" },
 332         { POWER_SUPPLY_TECHNOLOGY_LiFe, "LiFe" },
 333         { POWER_SUPPLY_TECHNOLOGY_NiCd, "NiCd" },
 334         { POWER_SUPPLY_TECHNOLOGY_LiMn, "LiMn" },
 335         { -1,                           NULL   },
 336 };
 337
 338
 339 static int map_get_value(struct battery_property_map *map, const char *key,
 340                                 int def_val)
 341 {
 342         char buf[MAX_KEYLENGTH];
 343         int cr;
 344
 345         strscpy(buf, key, MAX_KEYLENGTH);
 346
 347         cr = strnlen(buf, MAX_KEYLENGTH) - 1;
 348         if (cr < 0)
 349                 return def_val;
 350         if (buf[cr] == '\n')
 351                 buf[cr] = '\0';
 352
 353         while (map->key) {
 354                 if (strncasecmp(map->key, buf, MAX_KEYLENGTH) == 0)
 355                         return map->value;
 356                 map++;
 357         }
 358
 359         return def_val;
 360 }
 361
 362
 363 static const char *map_get_key(struct battery_property_map *map, int value,
 364                                 const char *def_key)
 365 {
 366         while (map->key) {
 367                 if (map->value == value)
 368                         return map->key;
 369                 map++;
 370         }
 371
 372         return def_key;
 373 }
 374
 375 static inline void signal_power_supply_changed(struct power_supply *psy)
 376 {
 377         if (module_initialized)
 378                 power_supply_changed(psy);
 379 }
 380
 381 static int param_set_ac_online(const char *key, const struct kernel_param *kp)
 382 {
 383         ac_online = map_get_value(map_ac_online, key, ac_online);
 384         signal_power_supply_changed(test_power_supplies[TEST_AC]);
 385         return 0;
 386 }
 387
 388 static int param_get_ac_online(char *buffer, const struct kernel_param *kp)
 389 {
 390         return sprintf(buffer, "%s\n",
 391                         map_get_key(map_ac_online, ac_online, "unknown"));
 392 }
 393
 394 static int param_set_usb_online(const char *key, const struct kernel_param *kp)
 395 {
 396         usb_online = map_get_value(map_ac_online, key, usb_online);
 397         signal_power_supply_changed(test_power_supplies[TEST_USB]);
 398         return 0;
 399 }
 400
 401 static int param_get_usb_online(char *buffer, const struct kernel_param *kp)
 402 {
 403         return sprintf(buffer, "%s\n",
 404                         map_get_key(map_ac_online, usb_online, "unknown"));
 405 }
 406
 407 static int param_set_battery_status(const char *key,
 408                                         const struct kernel_param *kp)
 409 {
 410         battery_status = map_get_value(map_status, key, battery_status);
 411         signal_power_supply_changed(test_power_supplies[TEST_BATTERY]);
 412         return 0;
 413 }
 414
 415 static int param_get_battery_status(char *buffer, const struct kernel_param *kp)
 416 {
 417         return sprintf(buffer, "%s\n",
 418                         map_get_key(map_ac_online, battery_status, "unknown"));
 419 }
 420
 421 static int param_set_battery_health(const char *key,
 422                                         const struct kernel_param *kp)
 423 {
 424         battery_health = map_get_value(map_health, key, battery_health);
 425         signal_power_supply_changed(test_power_supplies[TEST_BATTERY]);
 426         return 0;
 427 }
 428
 429 static int param_get_battery_health(char *buffer, const struct kernel_param *kp)
 430 {
 431         return sprintf(buffer, "%s\n",
 432                         map_get_key(map_ac_online, battery_health, "unknown"));
 433 }
 434
 435 static int param_set_battery_present(const char *key,
 436                                         const struct kernel_param *kp)
 437 {
 438         battery_present = map_get_value(map_present, key, battery_present);
 439         signal_power_supply_changed(test_power_supplies[TEST_AC]);
 440         return 0;
 441 }
 442
 443 static int param_get_battery_present(char *buffer,
 444                                         const struct kernel_param *kp)
 445 {
 446         return sprintf(buffer, "%s\n",
 447                         map_get_key(map_ac_online, battery_present, "unknown"));
 448 }
 449
 450 static int param_set_battery_technology(const char *key,
 451                                         const struct kernel_param *kp)
 452 {
 453         battery_technology = map_get_value(map_technology, key,
 454                                                 battery_technology);
 455         signal_power_supply_changed(test_power_supplies[TEST_BATTERY]);
 456         return 0;
 457 }
 458
 459 static int param_get_battery_technology(char *buffer,
 460                                         const struct kernel_param *kp)
 461 {
 462         return sprintf(buffer, "%s\n",
 463                         map_get_key(map_ac_online, battery_technology,
 464                                         "unknown"));
 465 }
 466
 467 static int param_set_battery_capacity(const char *key,
 468                                         const struct kernel_param *kp)
 469 {
 470         int tmp;
 471
 472         if (1 != sscanf(key, "%d", &tmp))
 473                 return -EINVAL;
 474
 475         battery_capacity = tmp;
 476         signal_power_supply_changed(test_power_supplies[TEST_BATTERY]);
 477         return 0;
 478 }
 479
 480 #define param_get_battery_capacity param_get_int
 481
 482 static int param_set_battery_voltage(const char *key,
 483                                         const struct kernel_param *kp)
 484 {
 485         int tmp;
 486
 487         if (1 != sscanf(key, "%d", &tmp))
 488                 return -EINVAL;
 489
 490         battery_voltage = tmp;
 491         signal_power_supply_changed(test_power_supplies[TEST_BATTERY]);
 492         return 0;
 493 }
 494
 495 #define param_get_battery_voltage param_get_int
 496
 497 static int param_set_battery_charge_counter(const char *key,
 498                                         const struct kernel_param *kp)
 499 {
 500         int tmp;
 501
 502         if (1 != sscanf(key, "%d", &tmp))
 503                 return -EINVAL;
 504
 505         battery_charge_counter = tmp;
 506         signal_power_supply_changed(test_power_supplies[TEST_BATTERY]);
 507         return 0;
 508 }
 509
 510 #define param_get_battery_charge_counter param_get_int
 511
 512 static int param_set_battery_current(const char *key,
 513                                         const struct kernel_param *kp)
 514 {
 515         int tmp;
 516
 517         if (1 != sscanf(key, "%d", &tmp))
 518                 return -EINVAL;
 519
 520         battery_current = tmp;
 521         signal_power_supply_changed(test_power_supplies[TEST_BATTERY]);
 522         return 0;
 523 }
 524
 525 #define param_get_battery_current param_get_int
 526
 527 static const struct kernel_param_ops param_ops_ac_online = {
 528         .set = param_set_ac_online,
 529         .get = param_get_ac_online,
 530 };
 531
 532 static const struct kernel_param_ops param_ops_usb_online = {
 533         .set = param_set_usb_online,
 534         .get = param_get_usb_online,
 535 };
 536
 537 static const struct kernel_param_ops param_ops_battery_status = {
 538         .set = param_set_battery_status,
 539         .get = param_get_battery_status,
 540 };
 541
 542 static const struct kernel_param_ops param_ops_battery_present = {
 543         .set = param_set_battery_present,
 544         .get = param_get_battery_present,
 545 };
 546
 547 static const struct kernel_param_ops param_ops_battery_technology = {
 548         .set = param_set_battery_technology,
 549         .get = param_get_battery_technology,
 550 };
 551
 552 static const struct kernel_param_ops param_ops_battery_health = {
 553         .set = param_set_battery_health,
 554         .get = param_get_battery_health,
 555 };
 556
 557 static const struct kernel_param_ops param_ops_battery_capacity = {
 558         .set = param_set_battery_capacity,
 559         .get = param_get_battery_capacity,
 560 };
 561
 562 static const struct kernel_param_ops param_ops_battery_voltage = {
 563         .set = param_set_battery_voltage,
 564         .get = param_get_battery_voltage,
 565 };
 566
 567 static const struct kernel_param_ops param_ops_battery_charge_counter = {
 568         .set = param_set_battery_charge_counter,
 569         .get = param_get_battery_charge_counter,
 570 };
 571
 572 static const struct kernel_param_ops param_ops_battery_current = {
 573         .set = param_set_battery_current,
 574         .get = param_get_battery_current,
 575 };
 576
 577 #define param_check_ac_online(name, p) __param_check(name, p, void);
 578 #define param_check_usb_online(name, p) __param_check(name, p, void);
 579 #define param_check_battery_status(name, p) __param_check(name, p, void);
 580 #define param_check_battery_present(name, p) __param_check(name, p, void);
 581 #define param_check_battery_technology(name, p) __param_check(name, p, void);
 582 #define param_check_battery_health(name, p) __param_check(name, p, void);
 583 #define param_check_battery_capacity(name, p) __param_check(name, p, void);
 584 #define param_check_battery_voltage(name, p) __param_check(name, p, void);
 585 #define param_check_battery_charge_counter(name, p) __param_check(name, p, void);
 586 #define param_check_battery_current(name, p) __param_check(name, p, void);
 587
 588
 589 module_param(ac_online, ac_online, 0644);
 590 MODULE_PARM_DESC(ac_online, "AC charging state <on|off>");
 591
 592 module_param(usb_online, usb_online, 0644);
 593 MODULE_PARM_DESC(usb_online, "USB charging state <on|off>");
 594
 595 module_param(battery_status, battery_status, 0644);
 596 MODULE_PARM_DESC(battery_status,
 597         "battery status <charging|discharging|not-charging|full>");
 598
 599 module_param(battery_present, battery_present, 0644);
 600 MODULE_PARM_DESC(battery_present,
 601         "battery presence state <good|overheat|dead|overvoltage|failure>");
 602
 603 module_param(battery_technology, battery_technology, 0644);
 604 MODULE_PARM_DESC(battery_technology,
 605         "battery technology <NiMH|LION|LIPO|LiFe|NiCd|LiMn>");
 606
 607 module_param(battery_health, battery_health, 0644);
 608 MODULE_PARM_DESC(battery_health,
 609         "battery health state <good|overheat|dead|overvoltage|failure>");
 610
 611 module_param(battery_capacity, battery_capacity, 0644);
 612 MODULE_PARM_DESC(battery_capacity, "battery capacity (percentage)");
 613
 614 module_param(battery_voltage, battery_voltage, 0644);
 615 MODULE_PARM_DESC(battery_voltage, "battery voltage (millivolts)");
 616
 617 module_param(battery_charge_counter, battery_charge_counter, 0644);
 618 MODULE_PARM_DESC(battery_charge_counter,
 619         "battery charge counter (microampere-hours)");
 620
 621 module_param(battery_current, battery_current, 0644);
 622 MODULE_PARM_DESC(battery_current, "battery current (milliampere)");
 623
 624 MODULE_DESCRIPTION("Power supply driver for testing");
 625 MODULE_AUTHOR("Anton Vorontsov <cbouatmailru@gmail.com>");
 626 MODULE_LICENSE("GPL");