drivers/hwmon/corsair-psu.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * corsair-psu.c - Linux driver for Corsair power supplies with HID sensors interface
   4  * Copyright (C) 2020 Wilken Gottwalt <wilken.gottwalt@posteo.net>
   5  */
   6
   7 #include <linux/completion.h>
   8 #include <linux/debugfs.h>
   9 #include <linux/errno.h>
  10 #include <linux/hid.h>
  11 #include <linux/hwmon.h>
  12 #include <linux/hwmon-sysfs.h>
  13 #include <linux/jiffies.h>
  14 #include <linux/kernel.h>
  15 #include <linux/module.h>
  16 #include <linux/mutex.h>
  17 #include <linux/slab.h>
  18 #include <linux/types.h>
  19
  20 /*
  21  * Corsair protocol for PSUs
  22  *
  23  * message size = 64 bytes (request and response, little endian)
  24  * request:
  25  *      [length][command][param0][param1][paramX]...
  26  * reply:
  27  *      [echo of length][echo of command][data0][data1][dataX]...
  28  *
  29  *      - commands are byte sized opcodes
  30  *      - length is the sum of all bytes of the commands/params
  31  *      - the micro-controller of most of these PSUs support concatenation in the request and reply,
  32  *        but it is better to not rely on this (it is also hard to parse)
  33  *      - the driver uses raw events to be accessible from userspace (though this is not really
  34  *        supported, it is just there for convenience, may be removed in the future)
  35  *      - a reply always start with the length and command in the same order the request used it
  36  *      - length of the reply data is specific to the command used
  37  *      - some of the commands work on a rail and can be switched to a specific rail (0 = 12v,
  38  *        1 = 5v, 2 = 3.3v)
  39  *      - the format of the init command 0xFE is swapped length/command bytes
  40  *      - parameter bytes amount and values are specific to the command (rail setting is the only
  41  *        for now that uses non-zero values)
  42  *      - there are much more commands, especially for configuring the device, but they are not
  43  *        supported because a wrong command/length can lockup the micro-controller
  44  *      - the driver supports debugfs for values not fitting into the hwmon class
  45  *      - not every device class (HXi, RMi or AXi) supports all commands
  46  *      - it is a pure sensors reading driver (will not support configuring)
  47  */
  48
  49 #define DRIVER_NAME             "corsair-psu"
  50
  51 #define REPLY_SIZE              16 /* max length of a reply to a single command */
  52 #define CMD_BUFFER_SIZE         64
  53 #define CMD_TIMEOUT_MS          250
  54 #define SECONDS_PER_HOUR        (60 * 60)
  55 #define SECONDS_PER_DAY         (SECONDS_PER_HOUR * 24)
  56
  57 #define PSU_CMD_SELECT_RAIL     0x00 /* expects length 2 */
  58 #define PSU_CMD_IN_VOLTS        0x88 /* the rest of the commands expect length 3 */
  59 #define PSU_CMD_IN_AMPS         0x89
  60 #define PSU_CMD_RAIL_OUT_VOLTS  0x8B
  61 #define PSU_CMD_RAIL_AMPS       0x8C
  62 #define PSU_CMD_TEMP0           0x8D
  63 #define PSU_CMD_TEMP1           0x8E
  64 #define PSU_CMD_FAN             0x90
  65 #define PSU_CMD_RAIL_WATTS      0x96
  66 #define PSU_CMD_VEND_STR        0x99
  67 #define PSU_CMD_PROD_STR        0x9A
  68 #define PSU_CMD_TOTAL_WATTS     0xEE
  69 #define PSU_CMD_TOTAL_UPTIME    0xD1
  70 #define PSU_CMD_UPTIME          0xD2
  71 #define PSU_CMD_INIT            0xFE
  72
  73 #define L_IN_VOLTS              "v_in"
  74 #define L_OUT_VOLTS_12V         "v_out +12v"
  75 #define L_OUT_VOLTS_5V          "v_out +5v"
  76 #define L_OUT_VOLTS_3_3V        "v_out +3.3v"
  77 #define L_IN_AMPS               "curr in"
  78 #define L_AMPS_12V              "curr +12v"
  79 #define L_AMPS_5V               "curr +5v"
  80 #define L_AMPS_3_3V             "curr +3.3v"
  81 #define L_FAN                   "psu fan"
  82 #define L_TEMP0                 "vrm temp"
  83 #define L_TEMP1                 "case temp"
  84 #define L_WATTS                 "power total"
  85 #define L_WATTS_12V             "power +12v"
  86 #define L_WATTS_5V              "power +5v"
  87 #define L_WATTS_3_3V            "power +3.3v"
  88
  89 static const char *const label_watts[] = {
  90         L_WATTS,
  91         L_WATTS_12V,
  92         L_WATTS_5V,
  93         L_WATTS_3_3V
  94 };
  95
  96 static const char *const label_volts[] = {
  97         L_IN_VOLTS,
  98         L_OUT_VOLTS_12V,
  99         L_OUT_VOLTS_5V,
 100         L_OUT_VOLTS_3_3V
 101 };
 102
 103 static const char *const label_amps[] = {
 104         L_IN_AMPS,
 105         L_AMPS_12V,
 106         L_AMPS_5V,
 107         L_AMPS_3_3V
 108 };
 109
 110 struct corsairpsu_data {
 111         struct hid_device *hdev;
 112         struct device *hwmon_dev;
 113         struct dentry *debugfs;
 114         struct completion wait_completion;
 115         struct mutex lock; /* for locking access to cmd_buffer */
 116         u8 *cmd_buffer;
 117         char vendor[REPLY_SIZE];
 118         char product[REPLY_SIZE];
 119 };
 120
 121 /* some values are SMBus LINEAR11 data which need a conversion */
 122 static int corsairpsu_linear11_to_int(const int val)
 123 {
 124         int exp = (val & 0xFFFF) >> 0x0B;
 125         int mant = val & 0x7FF;
 126         int i;
 127
 128         if (exp > 0x0F)
 129                 exp -= 0x20;
 130         if (mant > 0x3FF)
 131                 mant -= 0x800;
 132         if ((mant & 0x01) == 1)
 133                 ++mant;
 134         if (exp < 0) {
 135                 for (i = 0; i < -exp; ++i)
 136                         mant /= 2;
 137         } else {
 138                 for (i = 0; i < exp; ++i)
 139                         mant *= 2;
 140         }
 141
 142         return mant;
 143 }
 144
 145 static int corsairpsu_usb_cmd(struct corsairpsu_data *priv, u8 p0, u8 p1, u8 p2, void *data)
 146 {
 147         unsigned long time;
 148         int ret;
 149
 150         memset(priv->cmd_buffer, 0, CMD_BUFFER_SIZE);
 151         priv->cmd_buffer[0] = p0;
 152         priv->cmd_buffer[1] = p1;
 153         priv->cmd_buffer[2] = p2;
 154
 155         reinit_completion(&priv->wait_completion);
 156
 157         ret = hid_hw_output_report(priv->hdev, priv->cmd_buffer, CMD_BUFFER_SIZE);
 158         if (ret < 0)
 159                 return ret;
 160
 161         time = wait_for_completion_timeout(&priv->wait_completion,
 162                                            msecs_to_jiffies(CMD_TIMEOUT_MS));
 163         if (!time)
 164                 return -ETIMEDOUT;
 165
 166         /*
 167          * at the start of the reply is an echo of the send command/length in the same order it
 168          * was send, not every command is supported on every device class, if a command is not
 169          * supported, the length value in the reply is okay, but the command value is set to 0
 170          */
 171         if (p0 != priv->cmd_buffer[0] || p1 != priv->cmd_buffer[1])
 172                 return -EOPNOTSUPP;
 173
 174         if (data)
 175                 memcpy(data, priv->cmd_buffer + 2, REPLY_SIZE);
 176
 177         return 0;
 178 }
 179
 180 static int corsairpsu_init(struct corsairpsu_data *priv)
 181 {
 182         /*
 183          * PSU_CMD_INIT uses swapped length/command and expects 2 parameter bytes, this command
 184          * actually generates a reply, but we don't need it
 185          */
 186         return corsairpsu_usb_cmd(priv, PSU_CMD_INIT, 3, 0, NULL);
 187 }
 188
 189 static int corsairpsu_fwinfo(struct corsairpsu_data *priv)
 190 {
 191         int ret;
 192
 193         ret = corsairpsu_usb_cmd(priv, 3, PSU_CMD_VEND_STR, 0, priv->vendor);
 194         if (ret < 0)
 195                 return ret;
 196
 197         ret = corsairpsu_usb_cmd(priv, 3, PSU_CMD_PROD_STR, 0, priv->product);
 198         if (ret < 0)
 199                 return ret;
 200
 201         return 0;
 202 }
 203
 204 static int corsairpsu_request(struct corsairpsu_data *priv, u8 cmd, u8 rail, void *data)
 205 {
 206         int ret;
 207
 208         mutex_lock(&priv->lock);
 209         switch (cmd) {
 210         case PSU_CMD_RAIL_OUT_VOLTS:
 211         case PSU_CMD_RAIL_AMPS:
 212         case PSU_CMD_RAIL_WATTS:
 213                 ret = corsairpsu_usb_cmd(priv, 2, PSU_CMD_SELECT_RAIL, rail, NULL);
 214                 if (ret < 0)
 215                         goto cmd_fail;
 216                 break;
 217         default:
 218                 break;
 219         }
 220
 221         ret = corsairpsu_usb_cmd(priv, 3, cmd, 0, data);
 222
 223 cmd_fail:
 224         mutex_unlock(&priv->lock);
 225         return ret;
 226 }
 227
 228 static int corsairpsu_get_value(struct corsairpsu_data *priv, u8 cmd, u8 rail, long *val)
 229 {
 230         u8 data[REPLY_SIZE];
 231         long tmp;
 232         int ret;
 233
 234         ret = corsairpsu_request(priv, cmd, rail, data);
 235         if (ret < 0)
 236                 return ret;
 237
 238         /*
 239          * the biggest value here comes from the uptime command and to exceed MAXINT total uptime
 240          * needs to be about 68 years, the rest are u16 values and the biggest value coming out of
 241          * the LINEAR11 conversion are the watts values which are about 1200 for the strongest psu
 242          * supported (HX1200i)
 243          */
 244         tmp = ((long)data[3] << 24) + (data[2] << 16) + (data[1] << 8) + data[0];
 245         switch (cmd) {
 246         case PSU_CMD_IN_VOLTS:
 247         case PSU_CMD_IN_AMPS:
 248         case PSU_CMD_RAIL_OUT_VOLTS:
 249         case PSU_CMD_RAIL_AMPS:
 250         case PSU_CMD_TEMP0:
 251         case PSU_CMD_TEMP1:
 252                 *val = corsairpsu_linear11_to_int(tmp & 0xFFFF) * 1000;
 253                 break;
 254         case PSU_CMD_FAN:
 255                 *val = corsairpsu_linear11_to_int(tmp & 0xFFFF);
 256                 break;
 257         case PSU_CMD_RAIL_WATTS:
 258         case PSU_CMD_TOTAL_WATTS:
 259                 *val = corsairpsu_linear11_to_int(tmp & 0xFFFF) * 1000000;
 260                 break;
 261         case PSU_CMD_TOTAL_UPTIME:
 262         case PSU_CMD_UPTIME:
 263                 *val = tmp;
 264                 break;
 265         default:
 266                 ret = -EOPNOTSUPP;
 267                 break;
 268         }
 269
 270         return ret;
 271 }
 272
 273 static umode_t corsairpsu_hwmon_ops_is_visible(const void *data, enum hwmon_sensor_types type,
 274                                                u32 attr, int channel)
 275 {
 276         if (type == hwmon_temp && (attr == hwmon_temp_input || attr == hwmon_temp_label))
 277                 return 0444;
 278         else if (type == hwmon_fan && (attr == hwmon_fan_input || attr == hwmon_fan_label))
 279                 return 0444;
 280         else if (type == hwmon_power && (attr == hwmon_power_input || attr == hwmon_power_label))
 281                 return 0444;
 282         else if (type == hwmon_in && (attr == hwmon_in_input || attr == hwmon_in_label))
 283                 return 0444;
 284         else if (type == hwmon_curr && (attr == hwmon_curr_input || attr == hwmon_curr_label))
 285                 return 0444;
 286
 287         return 0;
 288 }
 289
 290 static int corsairpsu_hwmon_ops_read(struct device *dev, enum hwmon_sensor_types type, u32 attr,
 291                                      int channel, long *val)
 292 {
 293         struct corsairpsu_data *priv = dev_get_drvdata(dev);
 294         int ret;
 295
 296         if (type == hwmon_temp && attr == hwmon_temp_input && channel < 2) {
 297                 ret = corsairpsu_get_value(priv, channel ? PSU_CMD_TEMP1 : PSU_CMD_TEMP0, channel,
 298                                            val);
 299         } else if (type == hwmon_fan && attr == hwmon_fan_input) {
 300                 ret = corsairpsu_get_value(priv, PSU_CMD_FAN, 0, val);
 301         } else if (type == hwmon_power && attr == hwmon_power_input) {
 302                 switch (channel) {
 303                 case 0:
 304                         ret = corsairpsu_get_value(priv, PSU_CMD_TOTAL_WATTS, 0, val);
 305                         break;
 306                 case 1 ... 3:
 307                         ret = corsairpsu_get_value(priv, PSU_CMD_RAIL_WATTS, channel - 1, val);
 308                         break;
 309                 default:
 310                         return -EOPNOTSUPP;
 311                 }
 312         } else if (type == hwmon_in && attr == hwmon_in_input) {
 313                 switch (channel) {
 314                 case 0:
 315                         ret = corsairpsu_get_value(priv, PSU_CMD_IN_VOLTS, 0, val);
 316                         break;
 317                 case 1 ... 3:
 318                         ret = corsairpsu_get_value(priv, PSU_CMD_RAIL_OUT_VOLTS, channel - 1, val);
 319                         break;
 320                 default:
 321                         return -EOPNOTSUPP;
 322                 }
 323         } else if (type == hwmon_curr && attr == hwmon_curr_input) {
 324                 switch (channel) {
 325                 case 0:
 326                         ret = corsairpsu_get_value(priv, PSU_CMD_IN_AMPS, 0, val);
 327                         break;
 328                 case 1 ... 3:
 329                         ret = corsairpsu_get_value(priv, PSU_CMD_RAIL_AMPS, channel - 1, val);
 330                         break;
 331                 default:
 332                         return -EOPNOTSUPP;
 333                 }
 334         } else {
 335                 return -EOPNOTSUPP;
 336         }
 337
 338         if (ret < 0)
 339                 return ret;
 340
 341         return 0;
 342 }
 343
 344 static int corsairpsu_hwmon_ops_read_string(struct device *dev, enum hwmon_sensor_types type,
 345                                             u32 attr, int channel, const char **str)
 346 {
 347         if (type == hwmon_temp && attr == hwmon_temp_label) {
 348                 *str = channel ? L_TEMP1 : L_TEMP0;
 349                 return 0;
 350         } else if (type == hwmon_fan && attr == hwmon_fan_label) {
 351                 *str = L_FAN;
 352                 return 0;
 353         } else if (type == hwmon_power && attr == hwmon_power_label && channel < 4) {
 354                 *str = label_watts[channel];
 355                 return 0;
 356         } else if (type == hwmon_in && attr == hwmon_in_label && channel < 4) {
 357                 *str = label_volts[channel];
 358                 return 0;
 359         } else if (type == hwmon_curr && attr == hwmon_curr_label && channel < 4) {
 360                 *str = label_amps[channel];
 361                 return 0;
 362         }
 363
 364         return -EOPNOTSUPP;
 365 }
 366
 367 static const struct hwmon_ops corsairpsu_hwmon_ops = {
 368         .is_visible     = corsairpsu_hwmon_ops_is_visible,
 369         .read           = corsairpsu_hwmon_ops_read,
 370         .read_string    = corsairpsu_hwmon_ops_read_string,
 371 };
 372
 373 static const struct hwmon_channel_info *corsairpsu_info[] = {
 374         HWMON_CHANNEL_INFO(chip,
 375                            HWMON_C_REGISTER_TZ),
 376         HWMON_CHANNEL_INFO(temp,
 377                            HWMON_T_INPUT | HWMON_T_LABEL,
 378                            HWMON_T_INPUT | HWMON_T_LABEL),
 379         HWMON_CHANNEL_INFO(fan,
 380                            HWMON_F_INPUT | HWMON_F_LABEL),
 381         HWMON_CHANNEL_INFO(power,
 382                            HWMON_P_INPUT | HWMON_P_LABEL,
 383                            HWMON_P_INPUT | HWMON_P_LABEL,
 384                            HWMON_P_INPUT | HWMON_P_LABEL,
 385                            HWMON_P_INPUT | HWMON_P_LABEL),
 386         HWMON_CHANNEL_INFO(in,
 387                            HWMON_I_INPUT | HWMON_I_LABEL,
 388                            HWMON_I_INPUT | HWMON_I_LABEL,
 389                            HWMON_I_INPUT | HWMON_I_LABEL,
 390                            HWMON_I_INPUT | HWMON_I_LABEL),
 391         HWMON_CHANNEL_INFO(curr,
 392                            HWMON_C_INPUT | HWMON_C_LABEL,
 393                            HWMON_C_INPUT | HWMON_C_LABEL,
 394                            HWMON_C_INPUT | HWMON_C_LABEL,
 395                            HWMON_C_INPUT | HWMON_C_LABEL),
 396         NULL
 397 };
 398
 399 static const struct hwmon_chip_info corsairpsu_chip_info = {
 400         .ops    = &corsairpsu_hwmon_ops,
 401         .info   = corsairpsu_info,
 402 };
 403
 404 #ifdef CONFIG_DEBUG_FS
 405
 406 static void print_uptime(struct seq_file *seqf, u8 cmd)
 407 {
 408         struct corsairpsu_data *priv = seqf->private;
 409         long val;
 410         int ret;
 411
 412         ret = corsairpsu_get_value(priv, cmd, 0, &val);
 413         if (ret < 0) {
 414                 seq_puts(seqf, "N/A\n");
 415                 return;
 416         }
 417
 418         if (val > SECONDS_PER_DAY) {
 419                 seq_printf(seqf, "%ld day(s), %02ld:%02ld:%02ld\n", val / SECONDS_PER_DAY,
 420                            val % SECONDS_PER_DAY / SECONDS_PER_HOUR, val % SECONDS_PER_HOUR / 60,
 421                            val % 60);
 422                 return;
 423         }
 424
 425         seq_printf(seqf, "%02ld:%02ld:%02ld\n", val % SECONDS_PER_DAY / SECONDS_PER_HOUR,
 426                    val % SECONDS_PER_HOUR / 60, val % 60);
 427 }
 428
 429 static int uptime_show(struct seq_file *seqf, void *unused)
 430 {
 431         print_uptime(seqf, PSU_CMD_UPTIME);
 432
 433         return 0;
 434 }
 435 DEFINE_SHOW_ATTRIBUTE(uptime);
 436
 437 static int uptime_total_show(struct seq_file *seqf, void *unused)
 438 {
 439         print_uptime(seqf, PSU_CMD_TOTAL_UPTIME);
 440
 441         return 0;
 442 }
 443 DEFINE_SHOW_ATTRIBUTE(uptime_total);
 444
 445 static int vendor_show(struct seq_file *seqf, void *unused)
 446 {
 447         struct corsairpsu_data *priv = seqf->private;
 448
 449         seq_printf(seqf, "%s\n", priv->vendor);
 450
 451         return 0;
 452 }
 453 DEFINE_SHOW_ATTRIBUTE(vendor);
 454
 455 static int product_show(struct seq_file *seqf, void *unused)
 456 {
 457         struct corsairpsu_data *priv = seqf->private;
 458
 459         seq_printf(seqf, "%s\n", priv->product);
 460
 461         return 0;
 462 }
 463 DEFINE_SHOW_ATTRIBUTE(product);
 464
 465 static void corsairpsu_debugfs_init(struct corsairpsu_data *priv)
 466 {
 467         char name[32];
 468
 469         scnprintf(name, sizeof(name), "%s-%s", DRIVER_NAME, dev_name(&priv->hdev->dev));
 470
 471         priv->debugfs = debugfs_create_dir(name, NULL);
 472         debugfs_create_file("uptime", 0444, priv->debugfs, priv, &uptime_fops);
 473         debugfs_create_file("uptime_total", 0444, priv->debugfs, priv, &uptime_total_fops);
 474         debugfs_create_file("vendor", 0444, priv->debugfs, priv, &vendor_fops);
 475         debugfs_create_file("product", 0444, priv->debugfs, priv, &product_fops);
 476 }
 477
 478 #else
 479
 480 static void corsairpsu_debugfs_init(struct corsairpsu_data *priv)
 481 {
 482 }
 483
 484 #endif
 485
 486 static int corsairpsu_probe(struct hid_device *hdev, const struct hid_device_id *id)
 487 {
 488         struct corsairpsu_data *priv;
 489         int ret;
 490
 491         priv = devm_kzalloc(&hdev->dev, sizeof(struct corsairpsu_data), GFP_KERNEL);
 492         if (!priv)
 493                 return -ENOMEM;
 494
 495         priv->cmd_buffer = devm_kmalloc(&hdev->dev, CMD_BUFFER_SIZE, GFP_KERNEL);
 496         if (!priv->cmd_buffer)
 497                 return -ENOMEM;
 498
 499         ret = hid_parse(hdev);
 500         if (ret)
 501                 return ret;
 502
 503         ret = hid_hw_start(hdev, HID_CONNECT_HIDRAW);
 504         if (ret)
 505                 return ret;
 506
 507         ret = hid_hw_open(hdev);
 508         if (ret)
 509                 goto fail_and_stop;
 510
 511         priv->hdev = hdev;
 512         hid_set_drvdata(hdev, priv);
 513         mutex_init(&priv->lock);
 514         init_completion(&priv->wait_completion);
 515
 516         hid_device_io_start(hdev);
 517
 518         ret = corsairpsu_init(priv);
 519         if (ret < 0) {
 520                 dev_err(&hdev->dev, "unable to initialize device (%d)\n", ret);
 521                 goto fail_and_stop;
 522         }
 523
 524         ret = corsairpsu_fwinfo(priv);
 525         if (ret < 0) {
 526                 dev_err(&hdev->dev, "unable to query firmware (%d)\n", ret);
 527                 goto fail_and_stop;
 528         }
 529
 530         priv->hwmon_dev = hwmon_device_register_with_info(&hdev->dev, "corsairpsu", priv,
 531                                                           &corsairpsu_chip_info, 0);
 532
 533         if (IS_ERR(priv->hwmon_dev)) {
 534                 ret = PTR_ERR(priv->hwmon_dev);
 535                 goto fail_and_close;
 536         }
 537
 538         corsairpsu_debugfs_init(priv);
 539
 540         return 0;
 541
 542 fail_and_close:
 543         hid_hw_close(hdev);
 544 fail_and_stop:
 545         hid_hw_stop(hdev);
 546         return ret;
 547 }
 548
 549 static void corsairpsu_remove(struct hid_device *hdev)
 550 {
 551         struct corsairpsu_data *priv = hid_get_drvdata(hdev);
 552
 553         debugfs_remove_recursive(priv->debugfs);
 554         hwmon_device_unregister(priv->hwmon_dev);
 555         hid_hw_close(hdev);
 556         hid_hw_stop(hdev);
 557 }
 558
 559 static int corsairpsu_raw_event(struct hid_device *hdev, struct hid_report *report, u8 *data,
 560                                 int size)
 561 {
 562         struct corsairpsu_data *priv = hid_get_drvdata(hdev);
 563
 564         if (completion_done(&priv->wait_completion))
 565                 return 0;
 566
 567         memcpy(priv->cmd_buffer, data, min(CMD_BUFFER_SIZE, size));
 568         complete(&priv->wait_completion);
 569
 570         return 0;
 571 }
 572
 573 static const struct hid_device_id corsairpsu_idtable[] = {
 574         { HID_USB_DEVICE(0x1b1c, 0x1c03) }, /* Corsair HX550i */
 575         { HID_USB_DEVICE(0x1b1c, 0x1c04) }, /* Corsair HX650i */
 576         { HID_USB_DEVICE(0x1b1c, 0x1c05) }, /* Corsair HX750i */
 577         { HID_USB_DEVICE(0x1b1c, 0x1c06) }, /* Corsair HX850i */
 578         { HID_USB_DEVICE(0x1b1c, 0x1c07) }, /* Corsair HX1000i */
 579         { HID_USB_DEVICE(0x1b1c, 0x1c08) }, /* Corsair HX1200i */
 580         { HID_USB_DEVICE(0x1b1c, 0x1c09) }, /* Corsair RM550i */
 581         { HID_USB_DEVICE(0x1b1c, 0x1c0a) }, /* Corsair RM650i */
 582         { HID_USB_DEVICE(0x1b1c, 0x1c0b) }, /* Corsair RM750i */
 583         { HID_USB_DEVICE(0x1b1c, 0x1c0c) }, /* Corsair RM850i */
 584         { HID_USB_DEVICE(0x1b1c, 0x1c0d) }, /* Corsair RM1000i */
 585         { },
 586 };
 587 MODULE_DEVICE_TABLE(hid, corsairpsu_idtable);
 588
 589 static struct hid_driver corsairpsu_driver = {
 590         .name           = DRIVER_NAME,
 591         .id_table       = corsairpsu_idtable,
 592         .probe          = corsairpsu_probe,
 593         .remove         = corsairpsu_remove,
 594         .raw_event      = corsairpsu_raw_event,
 595 };
 596 module_hid_driver(corsairpsu_driver);
 597
 598 MODULE_LICENSE("GPL");
 599 MODULE_AUTHOR("Wilken Gottwalt <wilken.gottwalt@posteo.net>");
 600 MODULE_DESCRIPTION("Linux driver for Corsair power supplies with HID sensors interface");