drivers/thermal/intel/int340x_thermal/int3400_thermal.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * INT3400 thermal driver
   4  *
   5  * Copyright (C) 2014, Intel Corporation
   6  * Authors: Zhang Rui <rui.zhang@intel.com>
   7  */
   8
   9 #include <linux/module.h>
  10 #include <linux/platform_device.h>
  11 #include <linux/acpi.h>
  12 #include <linux/thermal.h>
  13 #include "acpi_thermal_rel.h"
  14
  15 #define INT3400_THERMAL_TABLE_CHANGED 0x83
  16 #define INT3400_ODVP_CHANGED 0x88
  17 #define INT3400_KEEP_ALIVE 0xA0
  18
  19 enum int3400_thermal_uuid {
  20         INT3400_THERMAL_ACTIVE = 0,
  21         INT3400_THERMAL_PASSIVE_1,
  22         INT3400_THERMAL_CRITICAL,
  23         INT3400_THERMAL_ADAPTIVE_PERFORMANCE,
  24         INT3400_THERMAL_EMERGENCY_CALL_MODE,
  25         INT3400_THERMAL_PASSIVE_2,
  26         INT3400_THERMAL_POWER_BOSS,
  27         INT3400_THERMAL_VIRTUAL_SENSOR,
  28         INT3400_THERMAL_COOLING_MODE,
  29         INT3400_THERMAL_HARDWARE_DUTY_CYCLING,
  30         INT3400_THERMAL_MAXIMUM_UUID,
  31 };
  32
  33 static char *int3400_thermal_uuids[INT3400_THERMAL_MAXIMUM_UUID] = {
  34         "3A95C389-E4B8-4629-A526-C52C88626BAE",
  35         "42A441D6-AE6A-462b-A84B-4A8CE79027D3",
  36         "97C68AE7-15FA-499c-B8C9-5DA81D606E0A",
  37         "63BE270F-1C11-48FD-A6F7-3AF253FF3E2D",
  38         "5349962F-71E6-431D-9AE8-0A635B710AEE",
  39         "9E04115A-AE87-4D1C-9500-0F3E340BFE75",
  40         "F5A35014-C209-46A4-993A-EB56DE7530A1",
  41         "6ED722A7-9240-48A5-B479-31EEF723D7CF",
  42         "16CAF1B7-DD38-40ED-B1C1-1B8A1913D531",
  43         "BE84BABF-C4D4-403D-B495-3128FD44dAC1",
  44 };
  45
  46 struct odvp_attr;
  47
  48 struct int3400_thermal_priv {
  49         struct acpi_device *adev;
  50         struct platform_device *pdev;
  51         struct thermal_zone_device *thermal;
  52         int art_count;
  53         struct art *arts;
  54         int trt_count;
  55         struct trt *trts;
  56         u32 uuid_bitmap;
  57         int rel_misc_dev_res;
  58         int current_uuid_index;
  59         char *data_vault;
  60         int odvp_count;
  61         int *odvp;
  62         u32 os_uuid_mask;
  63         struct odvp_attr *odvp_attrs;
  64 };
  65
  66 static int evaluate_odvp(struct int3400_thermal_priv *priv);
  67
  68 struct odvp_attr {
  69         int odvp;
  70         struct int3400_thermal_priv *priv;
  71         struct kobj_attribute attr;
  72 };
  73
  74 static ssize_t data_vault_read(struct file *file, struct kobject *kobj,
  75              struct bin_attribute *attr, char *buf, loff_t off, size_t count)
  76 {
  77         memcpy(buf, attr->private + off, count);
  78         return count;
  79 }
  80
  81 static BIN_ATTR_RO(data_vault, 0);
  82
  83 static struct bin_attribute *data_attributes[] = {
  84         &bin_attr_data_vault,
  85         NULL,
  86 };
  87
  88 static ssize_t imok_store(struct device *dev, struct device_attribute *attr,
  89                           const char *buf, size_t count)
  90 {
  91         struct int3400_thermal_priv *priv = dev_get_drvdata(dev);
  92         acpi_status status;
  93         int input, ret;
  94
  95         ret = kstrtouint(buf, 10, &input);
  96         if (ret)
  97                 return ret;
  98         status = acpi_execute_simple_method(priv->adev->handle, "IMOK", input);
  99         if (ACPI_FAILURE(status))
 100                 return -EIO;
 101
 102         return count;
 103 }
 104
 105 static DEVICE_ATTR_WO(imok);
 106
 107 static struct attribute *imok_attr[] = {
 108         &dev_attr_imok.attr,
 109         NULL
 110 };
 111
 112 static const struct attribute_group imok_attribute_group = {
 113         .attrs = imok_attr,
 114 };
 115
 116 static const struct attribute_group data_attribute_group = {
 117         .bin_attrs = data_attributes,
 118 };
 119
 120 static ssize_t available_uuids_show(struct device *dev,
 121                                     struct device_attribute *attr,
 122                                     char *buf)
 123 {
 124         struct int3400_thermal_priv *priv = dev_get_drvdata(dev);
 125         int i;
 126         int length = 0;
 127
 128         if (!priv->uuid_bitmap)
 129                 return sprintf(buf, "UNKNOWN\n");
 130
 131         for (i = 0; i < INT3400_THERMAL_MAXIMUM_UUID; i++) {
 132                 if (priv->uuid_bitmap & (1 << i))
 133                         length += scnprintf(&buf[length],
 134                                             PAGE_SIZE - length,
 135                                             "%s\n",
 136                                             int3400_thermal_uuids[i]);
 137         }
 138
 139         return length;
 140 }
 141
 142 static ssize_t current_uuid_show(struct device *dev,
 143                                  struct device_attribute *devattr, char *buf)
 144 {
 145         struct int3400_thermal_priv *priv = dev_get_drvdata(dev);
 146         int i, length = 0;
 147
 148         if (priv->current_uuid_index > 0)
 149                 return sprintf(buf, "%s\n",
 150                                int3400_thermal_uuids[priv->current_uuid_index]);
 151
 152         for (i = 0; i <= INT3400_THERMAL_CRITICAL; i++) {
 153                 if (priv->os_uuid_mask & BIT(i))
 154                         length += scnprintf(&buf[length],
 155                                             PAGE_SIZE - length,
 156                                             "%s\n",
 157                                             int3400_thermal_uuids[i]);
 158         }
 159
 160         if (length)
 161                 return length;
 162
 163         return sprintf(buf, "INVALID\n");
 164 }
 165
 166 static int int3400_thermal_run_osc(acpi_handle handle, char *uuid_str, int *enable)
 167 {
 168         u32 ret, buf[2];
 169         acpi_status status;
 170         int result = 0;
 171         struct acpi_osc_context context = {
 172                 .uuid_str = NULL,
 173                 .rev = 1,
 174                 .cap.length = 8,
 175         };
 176
 177         context.uuid_str = uuid_str;
 178
 179         buf[OSC_QUERY_DWORD] = 0;
 180         buf[OSC_SUPPORT_DWORD] = *enable;
 181
 182         context.cap.pointer = buf;
 183
 184         status = acpi_run_osc(handle, &context);
 185         if (ACPI_SUCCESS(status)) {
 186                 ret = *((u32 *)(context.ret.pointer + 4));
 187                 if (ret != *enable)
 188                         result = -EPERM;
 189         } else
 190                 result = -EPERM;
 191
 192         kfree(context.ret.pointer);
 193
 194         return result;
 195 }
 196
 197 static ssize_t current_uuid_store(struct device *dev,
 198                                   struct device_attribute *attr,
 199                                   const char *buf, size_t count)
 200 {
 201         struct int3400_thermal_priv *priv = dev_get_drvdata(dev);
 202         int i;
 203
 204         for (i = 0; i < INT3400_THERMAL_MAXIMUM_UUID; ++i) {
 205                 if (!strncmp(buf, int3400_thermal_uuids[i],
 206                              sizeof(int3400_thermal_uuids[i]) - 1)) {
 207                         /*
 208                          * If we have a list of supported UUIDs, make sure
 209                          * this one is supported.
 210                          */
 211                         if (priv->uuid_bitmap & BIT(i)) {
 212                                 priv->current_uuid_index = i;
 213                                 return count;
 214                         }
 215
 216                         /*
 217                          * There is support of only 3 policies via the new
 218                          * _OSC to inform OS capability:
 219                          * INT3400_THERMAL_ACTIVE
 220                          * INT3400_THERMAL_PASSIVE_1
 221                          * INT3400_THERMAL_CRITICAL
 222                          */
 223
 224                         if (i > INT3400_THERMAL_CRITICAL)
 225                                 return -EINVAL;
 226
 227                         priv->os_uuid_mask |= BIT(i);
 228
 229                         break;
 230                 }
 231         }
 232
 233         if (priv->os_uuid_mask) {
 234                 int cap, ret;
 235
 236                 /*
 237                  * Capability bits:
 238                  * Bit 0: set to 1 to indicate DPTF is active
 239                  * Bi1 1: set to 1 to active cooling is supported by user space daemon
 240                  * Bit 2: set to 1 to passive cooling is supported by user space daemon
 241                  * Bit 3: set to 1 to critical trip is handled by user space daemon
 242                  */
 243                 cap = ((priv->os_uuid_mask << 1) | 0x01);
 244                 ret = int3400_thermal_run_osc(priv->adev->handle,
 245                                               "b23ba85d-c8b7-3542-88de-8de2ffcfd698",
 246                                               &cap);
 247                 if (ret)
 248                         return ret;
 249         }
 250
 251         return count;
 252 }
 253
 254 static DEVICE_ATTR_RW(current_uuid);
 255 static DEVICE_ATTR_RO(available_uuids);
 256 static struct attribute *uuid_attrs[] = {
 257         &dev_attr_available_uuids.attr,
 258         &dev_attr_current_uuid.attr,
 259         NULL
 260 };
 261
 262 static const struct attribute_group uuid_attribute_group = {
 263         .attrs = uuid_attrs,
 264         .name = "uuids"
 265 };
 266
 267 static int int3400_thermal_get_uuids(struct int3400_thermal_priv *priv)
 268 {
 269         struct acpi_buffer buf = { ACPI_ALLOCATE_BUFFER, NULL};
 270         union acpi_object *obja, *objb;
 271         int i, j;
 272         int result = 0;
 273         acpi_status status;
 274
 275         status = acpi_evaluate_object(priv->adev->handle, "IDSP", NULL, &buf);
 276         if (ACPI_FAILURE(status))
 277                 return -ENODEV;
 278
 279         obja = (union acpi_object *)buf.pointer;
 280         if (obja->type != ACPI_TYPE_PACKAGE) {
 281                 result = -EINVAL;
 282                 goto end;
 283         }
 284
 285         for (i = 0; i < obja->package.count; i++) {
 286                 objb = &obja->package.elements[i];
 287                 if (objb->type != ACPI_TYPE_BUFFER) {
 288                         result = -EINVAL;
 289                         goto end;
 290                 }
 291
 292                 /* UUID must be 16 bytes */
 293                 if (objb->buffer.length != 16) {
 294                         result = -EINVAL;
 295                         goto end;
 296                 }
 297
 298                 for (j = 0; j < INT3400_THERMAL_MAXIMUM_UUID; j++) {
 299                         guid_t guid;
 300
 301                         guid_parse(int3400_thermal_uuids[j], &guid);
 302                         if (guid_equal((guid_t *)objb->buffer.pointer, &guid)) {
 303                                 priv->uuid_bitmap |= (1 << j);
 304                                 break;
 305                         }
 306                 }
 307         }
 308
 309 end:
 310         kfree(buf.pointer);
 311         return result;
 312 }
 313
 314 static ssize_t odvp_show(struct kobject *kobj, struct kobj_attribute *attr,
 315                          char *buf)
 316 {
 317         struct odvp_attr *odvp_attr;
 318
 319         odvp_attr = container_of(attr, struct odvp_attr, attr);
 320
 321         return sprintf(buf, "%d\n", odvp_attr->priv->odvp[odvp_attr->odvp]);
 322 }
 323
 324 static void cleanup_odvp(struct int3400_thermal_priv *priv)
 325 {
 326         int i;
 327
 328         if (priv->odvp_attrs) {
 329                 for (i = 0; i < priv->odvp_count; i++) {
 330                         sysfs_remove_file(&priv->pdev->dev.kobj,
 331                                           &priv->odvp_attrs[i].attr.attr);
 332                         kfree(priv->odvp_attrs[i].attr.attr.name);
 333                 }
 334                 kfree(priv->odvp_attrs);
 335         }
 336         kfree(priv->odvp);
 337         priv->odvp_count = 0;
 338 }
 339
 340 static int evaluate_odvp(struct int3400_thermal_priv *priv)
 341 {
 342         struct acpi_buffer odvp = { ACPI_ALLOCATE_BUFFER, NULL };
 343         union acpi_object *obj = NULL;
 344         acpi_status status;
 345         int i, ret;
 346
 347         status = acpi_evaluate_object(priv->adev->handle, "ODVP", NULL, &odvp);
 348         if (ACPI_FAILURE(status)) {
 349                 ret = -EINVAL;
 350                 goto out_err;
 351         }
 352
 353         obj = odvp.pointer;
 354         if (obj->type != ACPI_TYPE_PACKAGE) {
 355                 ret = -EINVAL;
 356                 goto out_err;
 357         }
 358
 359         if (priv->odvp == NULL) {
 360                 priv->odvp_count = obj->package.count;
 361                 priv->odvp = kmalloc_array(priv->odvp_count, sizeof(int),
 362                                      GFP_KERNEL);
 363                 if (!priv->odvp) {
 364                         ret = -ENOMEM;
 365                         goto out_err;
 366                 }
 367         }
 368
 369         if (priv->odvp_attrs == NULL) {
 370                 priv->odvp_attrs = kcalloc(priv->odvp_count,
 371                                            sizeof(struct odvp_attr),
 372                                            GFP_KERNEL);
 373                 if (!priv->odvp_attrs) {
 374                         ret = -ENOMEM;
 375                         goto out_err;
 376                 }
 377                 for (i = 0; i < priv->odvp_count; i++) {
 378                         struct odvp_attr *odvp = &priv->odvp_attrs[i];
 379
 380                         sysfs_attr_init(&odvp->attr.attr);
 381                         odvp->priv = priv;
 382                         odvp->odvp = i;
 383                         odvp->attr.attr.name = kasprintf(GFP_KERNEL,
 384                                                          "odvp%d", i);
 385
 386                         if (!odvp->attr.attr.name) {
 387                                 ret = -ENOMEM;
 388                                 goto out_err;
 389                         }
 390                         odvp->attr.attr.mode = 0444;
 391                         odvp->attr.show = odvp_show;
 392                         odvp->attr.store = NULL;
 393                         ret = sysfs_create_file(&priv->pdev->dev.kobj,
 394                                                 &odvp->attr.attr);
 395                         if (ret)
 396                                 goto out_err;
 397                 }
 398         }
 399
 400         for (i = 0; i < obj->package.count; i++) {
 401                 if (obj->package.elements[i].type == ACPI_TYPE_INTEGER)
 402                         priv->odvp[i] = obj->package.elements[i].integer.value;
 403         }
 404
 405         kfree(obj);
 406         return 0;
 407
 408 out_err:
 409         cleanup_odvp(priv);
 410         kfree(obj);
 411         return ret;
 412 }
 413
 414 static void int3400_notify(acpi_handle handle,
 415                         u32 event,
 416                         void *data)
 417 {
 418         struct int3400_thermal_priv *priv = data;
 419         char *thermal_prop[5];
 420         int therm_event;
 421
 422         if (!priv)
 423                 return;
 424
 425         switch (event) {
 426         case INT3400_THERMAL_TABLE_CHANGED:
 427                 therm_event = THERMAL_TABLE_CHANGED;
 428                 break;
 429         case INT3400_KEEP_ALIVE:
 430                 therm_event = THERMAL_EVENT_KEEP_ALIVE;
 431                 break;
 432         case INT3400_ODVP_CHANGED:
 433                 evaluate_odvp(priv);
 434                 therm_event = THERMAL_DEVICE_POWER_CAPABILITY_CHANGED;
 435                 break;
 436         default:
 437                 /* Ignore unknown notification codes sent to INT3400 device */
 438                 return;
 439         }
 440
 441         thermal_prop[0] = kasprintf(GFP_KERNEL, "NAME=%s", priv->thermal->type);
 442         thermal_prop[1] = kasprintf(GFP_KERNEL, "TEMP=%d", priv->thermal->temperature);
 443         thermal_prop[2] = kasprintf(GFP_KERNEL, "TRIP=");
 444         thermal_prop[3] = kasprintf(GFP_KERNEL, "EVENT=%d", therm_event);
 445         thermal_prop[4] = NULL;
 446         kobject_uevent_env(&priv->thermal->device.kobj, KOBJ_CHANGE, thermal_prop);
 447         kfree(thermal_prop[0]);
 448         kfree(thermal_prop[1]);
 449         kfree(thermal_prop[2]);
 450         kfree(thermal_prop[3]);
 451 }
 452
 453 static int int3400_thermal_get_temp(struct thermal_zone_device *thermal,
 454                         int *temp)
 455 {
 456         *temp = 20 * 1000; /* faked temp sensor with 20C */
 457         return 0;
 458 }
 459
 460 static int int3400_thermal_change_mode(struct thermal_zone_device *thermal,
 461                                        enum thermal_device_mode mode)
 462 {
 463         struct int3400_thermal_priv *priv = thermal->devdata;
 464         int result = 0;
 465
 466         if (!priv)
 467                 return -EINVAL;
 468
 469         if (mode != thermal->mode) {
 470                 int enabled;
 471
 472                 if (priv->current_uuid_index < 0 ||
 473                     priv->current_uuid_index >= INT3400_THERMAL_MAXIMUM_UUID)
 474                         return -EINVAL;
 475
 476                 enabled = (mode == THERMAL_DEVICE_ENABLED);
 477                 result = int3400_thermal_run_osc(priv->adev->handle,
 478                                                  int3400_thermal_uuids[priv->current_uuid_index],
 479                                                  &enabled);
 480         }
 481
 482
 483         evaluate_odvp(priv);
 484
 485         return result;
 486 }
 487
 488 static struct thermal_zone_device_ops int3400_thermal_ops = {
 489         .get_temp = int3400_thermal_get_temp,
 490         .change_mode = int3400_thermal_change_mode,
 491 };
 492
 493 static struct thermal_zone_params int3400_thermal_params = {
 494         .governor_name = "user_space",
 495         .no_hwmon = true,
 496 };
 497
 498 static void int3400_setup_gddv(struct int3400_thermal_priv *priv)
 499 {
 500         struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
 501         union acpi_object *obj;
 502         acpi_status status;
 503
 504         status = acpi_evaluate_object(priv->adev->handle, "GDDV", NULL,
 505                                       &buffer);
 506         if (ACPI_FAILURE(status) || !buffer.length)
 507                 return;
 508
 509         obj = buffer.pointer;
 510         if (obj->type != ACPI_TYPE_PACKAGE || obj->package.count != 1
 511             || obj->package.elements[0].type != ACPI_TYPE_BUFFER) {
 512                 kfree(buffer.pointer);
 513                 return;
 514         }
 515
 516         priv->data_vault = kmemdup(obj->package.elements[0].buffer.pointer,
 517                                    obj->package.elements[0].buffer.length,
 518                                    GFP_KERNEL);
 519         if (!priv->data_vault) {
 520                 kfree(buffer.pointer);
 521                 return;
 522         }
 523
 524         bin_attr_data_vault.private = priv->data_vault;
 525         bin_attr_data_vault.size = obj->package.elements[0].buffer.length;
 526         kfree(buffer.pointer);
 527 }
 528
 529 static int int3400_thermal_probe(struct platform_device *pdev)
 530 {
 531         struct acpi_device *adev = ACPI_COMPANION(&pdev->dev);
 532         struct int3400_thermal_priv *priv;
 533         int result;
 534
 535         if (!adev)
 536                 return -ENODEV;
 537
 538         priv = kzalloc(sizeof(struct int3400_thermal_priv), GFP_KERNEL);
 539         if (!priv)
 540                 return -ENOMEM;
 541
 542         priv->pdev = pdev;
 543         priv->adev = adev;
 544
 545         result = int3400_thermal_get_uuids(priv);
 546
 547         /* Missing IDSP isn't fatal */
 548         if (result && result != -ENODEV)
 549                 goto free_priv;
 550
 551         priv->current_uuid_index = -1;
 552
 553         result = acpi_parse_art(priv->adev->handle, &priv->art_count,
 554                                 &priv->arts, true);
 555         if (result)
 556                 dev_dbg(&pdev->dev, "_ART table parsing error\n");
 557
 558         result = acpi_parse_trt(priv->adev->handle, &priv->trt_count,
 559                                 &priv->trts, true);
 560         if (result)
 561                 dev_dbg(&pdev->dev, "_TRT table parsing error\n");
 562
 563         platform_set_drvdata(pdev, priv);
 564
 565         int3400_setup_gddv(priv);
 566
 567         evaluate_odvp(priv);
 568
 569         priv->thermal = thermal_zone_device_register("INT3400 Thermal", 0, 0,
 570                                                 priv, &int3400_thermal_ops,
 571                                                 &int3400_thermal_params, 0, 0);
 572         if (IS_ERR(priv->thermal)) {
 573                 result = PTR_ERR(priv->thermal);
 574                 goto free_art_trt;
 575         }
 576
 577         priv->rel_misc_dev_res = acpi_thermal_rel_misc_device_add(
 578                                                         priv->adev->handle);
 579
 580         result = sysfs_create_group(&pdev->dev.kobj, &uuid_attribute_group);
 581         if (result)
 582                 goto free_rel_misc;
 583
 584         if (acpi_has_method(priv->adev->handle, "IMOK")) {
 585                 result = sysfs_create_group(&pdev->dev.kobj, &imok_attribute_group);
 586                 if (result)
 587                         goto free_imok;
 588         }
 589
 590         if (priv->data_vault) {
 591                 result = sysfs_create_group(&pdev->dev.kobj,
 592                                             &data_attribute_group);
 593                 if (result)
 594                         goto free_uuid;
 595         }
 596
 597         result = acpi_install_notify_handler(
 598                         priv->adev->handle, ACPI_DEVICE_NOTIFY, int3400_notify,
 599                         (void *)priv);
 600         if (result)
 601                 goto free_sysfs;
 602
 603         return 0;
 604
 605 free_sysfs:
 606         cleanup_odvp(priv);
 607         if (priv->data_vault) {
 608                 sysfs_remove_group(&pdev->dev.kobj, &data_attribute_group);
 609                 kfree(priv->data_vault);
 610         }
 611 free_uuid:
 612         sysfs_remove_group(&pdev->dev.kobj, &uuid_attribute_group);
 613 free_imok:
 614         sysfs_remove_group(&pdev->dev.kobj, &imok_attribute_group);
 615 free_rel_misc:
 616         if (!priv->rel_misc_dev_res)
 617                 acpi_thermal_rel_misc_device_remove(priv->adev->handle);
 618         thermal_zone_device_unregister(priv->thermal);
 619 free_art_trt:
 620         kfree(priv->trts);
 621         kfree(priv->arts);
 622 free_priv:
 623         kfree(priv);
 624         return result;
 625 }
 626
 627 static int int3400_thermal_remove(struct platform_device *pdev)
 628 {
 629         struct int3400_thermal_priv *priv = platform_get_drvdata(pdev);
 630
 631         acpi_remove_notify_handler(
 632                         priv->adev->handle, ACPI_DEVICE_NOTIFY,
 633                         int3400_notify);
 634
 635         cleanup_odvp(priv);
 636
 637         if (!priv->rel_misc_dev_res)
 638                 acpi_thermal_rel_misc_device_remove(priv->adev->handle);
 639
 640         if (priv->data_vault)
 641                 sysfs_remove_group(&pdev->dev.kobj, &data_attribute_group);
 642         sysfs_remove_group(&pdev->dev.kobj, &uuid_attribute_group);
 643         sysfs_remove_group(&pdev->dev.kobj, &imok_attribute_group);
 644         thermal_zone_device_unregister(priv->thermal);
 645         kfree(priv->data_vault);
 646         kfree(priv->trts);
 647         kfree(priv->arts);
 648         kfree(priv);
 649         return 0;
 650 }
 651
 652 static const struct acpi_device_id int3400_thermal_match[] = {
 653         {"INT3400", 0},
 654         {"INTC1040", 0},
 655         {"INTC1041", 0},
 656         {"INTC10A0", 0},
 657         {}
 658 };
 659
 660 MODULE_DEVICE_TABLE(acpi, int3400_thermal_match);
 661
 662 static struct platform_driver int3400_thermal_driver = {
 663         .probe = int3400_thermal_probe,
 664         .remove = int3400_thermal_remove,
 665         .driver = {
 666                    .name = "int3400 thermal",
 667                    .acpi_match_table = ACPI_PTR(int3400_thermal_match),
 668                    },
 669 };
 670
 671 module_platform_driver(int3400_thermal_driver);
 672
 673 MODULE_DESCRIPTION("INT3400 Thermal driver");
 674 MODULE_AUTHOR("Zhang Rui <rui.zhang@intel.com>");
 675 MODULE_LICENSE("GPL");