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 <[email protected]>
   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 #define INT3400_FAKE_TEMP (20 * 1000) /* faked temp sensor with 20C */
  19
  20 enum int3400_thermal_uuid {
  21         INT3400_THERMAL_ACTIVE = 0,
  22         INT3400_THERMAL_PASSIVE_1,
  23         INT3400_THERMAL_CRITICAL,
  24         INT3400_THERMAL_ADAPTIVE_PERFORMANCE,
  25         INT3400_THERMAL_EMERGENCY_CALL_MODE,
  26         INT3400_THERMAL_PASSIVE_2,
  27         INT3400_THERMAL_POWER_BOSS,
  28         INT3400_THERMAL_VIRTUAL_SENSOR,
  29         INT3400_THERMAL_COOLING_MODE,
  30         INT3400_THERMAL_HARDWARE_DUTY_CYCLING,
  31         INT3400_THERMAL_MAXIMUM_UUID,
  32 };
  33
  34 static char *int3400_thermal_uuids[INT3400_THERMAL_MAXIMUM_UUID] = {
  35         "3A95C389-E4B8-4629-A526-C52C88626BAE",
  36         "42A441D6-AE6A-462b-A84B-4A8CE79027D3",
  37         "97C68AE7-15FA-499c-B8C9-5DA81D606E0A",
  38         "63BE270F-1C11-48FD-A6F7-3AF253FF3E2D",
  39         "5349962F-71E6-431D-9AE8-0A635B710AEE",
  40         "9E04115A-AE87-4D1C-9500-0F3E340BFE75",
  41         "F5A35014-C209-46A4-993A-EB56DE7530A1",
  42         "6ED722A7-9240-48A5-B479-31EEF723D7CF",
  43         "16CAF1B7-DD38-40ED-B1C1-1B8A1913D531",
  44         "BE84BABF-C4D4-403D-B495-3128FD44dAC1",
  45 };
  46
  47 struct odvp_attr;
  48
  49 struct int3400_thermal_priv {
  50         struct acpi_device *adev;
  51         struct platform_device *pdev;
  52         struct thermal_zone_device *thermal;
  53         int art_count;
  54         struct art *arts;
  55         int trt_count;
  56         struct trt *trts;
  57         u32 uuid_bitmap;
  58         int rel_misc_dev_res;
  59         int current_uuid_index;
  60         char *data_vault;
  61         int odvp_count;
  62         int *odvp;
  63         u32 os_uuid_mask;
  64         int production_mode;
  65         struct odvp_attr *odvp_attrs;
  66 };
  67
  68 static int evaluate_odvp(struct int3400_thermal_priv *priv);
  69
  70 struct odvp_attr {
  71         int odvp;
  72         struct int3400_thermal_priv *priv;
  73         struct device_attribute attr;
  74 };
  75
  76 static BIN_ATTR_SIMPLE_RO(data_vault);
  77
  78 static ssize_t imok_store(struct device *dev, struct device_attribute *attr,
  79                           const char *buf, size_t count)
  80 {
  81         struct int3400_thermal_priv *priv = dev_get_drvdata(dev);
  82         acpi_status status;
  83         int input, ret;
  84
  85         ret = kstrtouint(buf, 10, &input);
  86         if (ret)
  87                 return ret;
  88         status = acpi_execute_simple_method(priv->adev->handle, "IMOK", input);
  89         if (ACPI_FAILURE(status))
  90                 return -EIO;
  91
  92         return count;
  93 }
  94
  95 static DEVICE_ATTR_WO(imok);
  96
  97 static struct attribute *imok_attr[] = {
  98         &dev_attr_imok.attr,
  99         NULL
 100 };
 101
 102 static const struct attribute_group imok_attribute_group = {
 103         .attrs = imok_attr,
 104 };
 105
 106 static ssize_t available_uuids_show(struct device *dev,
 107                                     struct device_attribute *attr,
 108                                     char *buf)
 109 {
 110         struct int3400_thermal_priv *priv = dev_get_drvdata(dev);
 111         int i;
 112         int length = 0;
 113
 114         if (!priv->uuid_bitmap)
 115                 return sprintf(buf, "UNKNOWN\n");
 116
 117         for (i = 0; i < INT3400_THERMAL_MAXIMUM_UUID; i++) {
 118                 if (priv->uuid_bitmap & (1 << i))
 119                         length += sysfs_emit_at(buf, length, "%s\n", int3400_thermal_uuids[i]);
 120         }
 121
 122         return length;
 123 }
 124
 125 static ssize_t current_uuid_show(struct device *dev,
 126                                  struct device_attribute *devattr, char *buf)
 127 {
 128         struct int3400_thermal_priv *priv = dev_get_drvdata(dev);
 129         int i, length = 0;
 130
 131         if (priv->current_uuid_index >= 0)
 132                 return sprintf(buf, "%s\n",
 133                                int3400_thermal_uuids[priv->current_uuid_index]);
 134
 135         for (i = 0; i <= INT3400_THERMAL_CRITICAL; i++) {
 136                 if (priv->os_uuid_mask & BIT(i))
 137                         length += sysfs_emit_at(buf, length, "%s\n", int3400_thermal_uuids[i]);
 138         }
 139
 140         if (length)
 141                 return length;
 142
 143         return sprintf(buf, "INVALID\n");
 144 }
 145
 146 static int int3400_thermal_run_osc(acpi_handle handle, char *uuid_str, int *enable)
 147 {
 148         u32 ret, buf[2];
 149         acpi_status status;
 150         int result = 0;
 151         struct acpi_osc_context context = {
 152                 .uuid_str = uuid_str,
 153                 .rev = 1,
 154                 .cap.length = 8,
 155                 .cap.pointer = buf,
 156         };
 157
 158         buf[OSC_QUERY_DWORD] = 0;
 159         buf[OSC_SUPPORT_DWORD] = *enable;
 160
 161         status = acpi_run_osc(handle, &context);
 162         if (ACPI_SUCCESS(status)) {
 163                 ret = *((u32 *)(context.ret.pointer + 4));
 164                 if (ret != *enable)
 165                         result = -EPERM;
 166
 167                 kfree(context.ret.pointer);
 168         } else
 169                 result = -EPERM;
 170
 171         return result;
 172 }
 173
 174 static int set_os_uuid_mask(struct int3400_thermal_priv *priv, u32 mask)
 175 {
 176         int cap = 0;
 177
 178         /*
 179          * Capability bits:
 180          * Bit 0: set to 1 to indicate DPTF is active
 181          * Bi1 1: set to 1 to active cooling is supported by user space daemon
 182          * Bit 2: set to 1 to passive cooling is supported by user space daemon
 183          * Bit 3: set to 1 to critical trip is handled by user space daemon
 184          */
 185         if (mask)
 186                 cap = (priv->os_uuid_mask << 1) | 0x01;
 187
 188         return int3400_thermal_run_osc(priv->adev->handle,
 189                                        "b23ba85d-c8b7-3542-88de-8de2ffcfd698",
 190                                        &cap);
 191 }
 192
 193 static ssize_t current_uuid_store(struct device *dev,
 194                                   struct device_attribute *attr,
 195                                   const char *buf, size_t count)
 196 {
 197         struct int3400_thermal_priv *priv = dev_get_drvdata(dev);
 198         int ret, i;
 199
 200         for (i = 0; i < INT3400_THERMAL_MAXIMUM_UUID; ++i) {
 201                 if (!strncmp(buf, int3400_thermal_uuids[i],
 202                              sizeof(int3400_thermal_uuids[i]) - 1)) {
 203                         /*
 204                          * If we have a list of supported UUIDs, make sure
 205                          * this one is supported.
 206                          */
 207                         if (priv->uuid_bitmap & BIT(i)) {
 208                                 priv->current_uuid_index = i;
 209                                 return count;
 210                         }
 211
 212                         /*
 213                          * There is support of only 3 policies via the new
 214                          * _OSC to inform OS capability:
 215                          * INT3400_THERMAL_ACTIVE
 216                          * INT3400_THERMAL_PASSIVE_1
 217                          * INT3400_THERMAL_CRITICAL
 218                          */
 219
 220                         if (i > INT3400_THERMAL_CRITICAL)
 221                                 return -EINVAL;
 222
 223                         priv->os_uuid_mask |= BIT(i);
 224
 225                         break;
 226                 }
 227         }
 228
 229         if (priv->os_uuid_mask) {
 230                 ret = set_os_uuid_mask(priv, priv->os_uuid_mask);
 231                 if (ret)
 232                         return ret;
 233         }
 234
 235         return count;
 236 }
 237
 238 static DEVICE_ATTR_RW(current_uuid);
 239 static DEVICE_ATTR_RO(available_uuids);
 240 static struct attribute *uuid_attrs[] = {
 241         &dev_attr_available_uuids.attr,
 242         &dev_attr_current_uuid.attr,
 243         NULL
 244 };
 245
 246 static const struct attribute_group uuid_attribute_group = {
 247         .attrs = uuid_attrs,
 248         .name = "uuids"
 249 };
 250
 251 static int int3400_thermal_get_uuids(struct int3400_thermal_priv *priv)
 252 {
 253         struct acpi_buffer buf = { ACPI_ALLOCATE_BUFFER, NULL};
 254         union acpi_object *obja, *objb;
 255         int i, j;
 256         int result = 0;
 257         acpi_status status;
 258
 259         status = acpi_evaluate_object(priv->adev->handle, "IDSP", NULL, &buf);
 260         if (ACPI_FAILURE(status))
 261                 return -ENODEV;
 262
 263         obja = (union acpi_object *)buf.pointer;
 264         if (obja->type != ACPI_TYPE_PACKAGE) {
 265                 result = -EINVAL;
 266                 goto end;
 267         }
 268
 269         for (i = 0; i < obja->package.count; i++) {
 270                 objb = &obja->package.elements[i];
 271                 if (objb->type != ACPI_TYPE_BUFFER) {
 272                         result = -EINVAL;
 273                         goto end;
 274                 }
 275
 276                 /* UUID must be 16 bytes */
 277                 if (objb->buffer.length != 16) {
 278                         result = -EINVAL;
 279                         goto end;
 280                 }
 281
 282                 for (j = 0; j < INT3400_THERMAL_MAXIMUM_UUID; j++) {
 283                         guid_t guid;
 284
 285                         guid_parse(int3400_thermal_uuids[j], &guid);
 286                         if (guid_equal((guid_t *)objb->buffer.pointer, &guid)) {
 287                                 priv->uuid_bitmap |= (1 << j);
 288                                 break;
 289                         }
 290                 }
 291         }
 292
 293 end:
 294         kfree(buf.pointer);
 295         return result;
 296 }
 297
 298 static ssize_t production_mode_show(struct device *dev, struct device_attribute *attr,
 299                                      char *buf)
 300 {
 301         struct int3400_thermal_priv *priv = dev_get_drvdata(dev);
 302
 303         return sysfs_emit(buf, "%d\n", priv->production_mode);
 304 }
 305
 306 static DEVICE_ATTR_RO(production_mode);
 307
 308 static int production_mode_init(struct int3400_thermal_priv *priv)
 309 {
 310         unsigned long long mode;
 311         acpi_status status;
 312         int ret;
 313
 314         priv->production_mode = -1;
 315
 316         status = acpi_evaluate_integer(priv->adev->handle, "DCFG", NULL, &mode);
 317         /* If the method is not present, this is not an error */
 318         if (ACPI_FAILURE(status))
 319                 return 0;
 320
 321         ret = sysfs_create_file(&priv->pdev->dev.kobj, &dev_attr_production_mode.attr);
 322         if (ret)
 323                 return ret;
 324
 325         priv->production_mode = mode;
 326
 327         return 0;
 328 }
 329
 330 static void production_mode_exit(struct int3400_thermal_priv *priv)
 331 {
 332         if (priv->production_mode >= 0)
 333                 sysfs_remove_file(&priv->pdev->dev.kobj, &dev_attr_production_mode.attr);
 334 }
 335
 336 static ssize_t odvp_show(struct device *dev, struct device_attribute *attr,
 337                          char *buf)
 338 {
 339         struct odvp_attr *odvp_attr;
 340
 341         odvp_attr = container_of(attr, struct odvp_attr, attr);
 342
 343         return sprintf(buf, "%d\n", odvp_attr->priv->odvp[odvp_attr->odvp]);
 344 }
 345
 346 static void cleanup_odvp(struct int3400_thermal_priv *priv)
 347 {
 348         int i;
 349
 350         if (priv->odvp_attrs) {
 351                 for (i = 0; i < priv->odvp_count; i++) {
 352                         sysfs_remove_file(&priv->pdev->dev.kobj,
 353                                           &priv->odvp_attrs[i].attr.attr);
 354                         kfree(priv->odvp_attrs[i].attr.attr.name);
 355                 }
 356                 kfree(priv->odvp_attrs);
 357         }
 358         kfree(priv->odvp);
 359         priv->odvp_count = 0;
 360 }
 361
 362 static int evaluate_odvp(struct int3400_thermal_priv *priv)
 363 {
 364         struct acpi_buffer odvp = { ACPI_ALLOCATE_BUFFER, NULL };
 365         union acpi_object *obj = NULL;
 366         acpi_status status;
 367         int i, ret;
 368
 369         status = acpi_evaluate_object(priv->adev->handle, "ODVP", NULL, &odvp);
 370         if (ACPI_FAILURE(status)) {
 371                 ret = -EINVAL;
 372                 goto out_err;
 373         }
 374
 375         obj = odvp.pointer;
 376         if (obj->type != ACPI_TYPE_PACKAGE) {
 377                 ret = -EINVAL;
 378                 goto out_err;
 379         }
 380
 381         if (priv->odvp == NULL) {
 382                 priv->odvp_count = obj->package.count;
 383                 priv->odvp = kmalloc_array(priv->odvp_count, sizeof(int),
 384                                      GFP_KERNEL);
 385                 if (!priv->odvp) {
 386                         ret = -ENOMEM;
 387                         goto out_err;
 388                 }
 389         }
 390
 391         if (priv->odvp_attrs == NULL) {
 392                 priv->odvp_attrs = kcalloc(priv->odvp_count,
 393                                            sizeof(struct odvp_attr),
 394                                            GFP_KERNEL);
 395                 if (!priv->odvp_attrs) {
 396                         ret = -ENOMEM;
 397                         goto out_err;
 398                 }
 399                 for (i = 0; i < priv->odvp_count; i++) {
 400                         struct odvp_attr *odvp = &priv->odvp_attrs[i];
 401
 402                         sysfs_attr_init(&odvp->attr.attr);
 403                         odvp->priv = priv;
 404                         odvp->odvp = i;
 405                         odvp->attr.attr.name = kasprintf(GFP_KERNEL,
 406                                                          "odvp%d", i);
 407
 408                         if (!odvp->attr.attr.name) {
 409                                 ret = -ENOMEM;
 410                                 goto out_err;
 411                         }
 412                         odvp->attr.attr.mode = 0444;
 413                         odvp->attr.show = odvp_show;
 414                         odvp->attr.store = NULL;
 415                         ret = sysfs_create_file(&priv->pdev->dev.kobj,
 416                                                 &odvp->attr.attr);
 417                         if (ret)
 418                                 goto out_err;
 419                 }
 420         }
 421
 422         for (i = 0; i < obj->package.count; i++) {
 423                 if (obj->package.elements[i].type == ACPI_TYPE_INTEGER)
 424                         priv->odvp[i] = obj->package.elements[i].integer.value;
 425         }
 426
 427         kfree(obj);
 428         return 0;
 429
 430 out_err:
 431         cleanup_odvp(priv);
 432         kfree(obj);
 433         return ret;
 434 }
 435
 436 static void int3400_notify(acpi_handle handle,
 437                         u32 event,
 438                         void *data)
 439 {
 440         struct int3400_thermal_priv *priv = data;
 441         struct device *dev;
 442         char *thermal_prop[5];
 443         int therm_event;
 444
 445         if (!priv)
 446                 return;
 447
 448         switch (event) {
 449         case INT3400_THERMAL_TABLE_CHANGED:
 450                 therm_event = THERMAL_TABLE_CHANGED;
 451                 break;
 452         case INT3400_KEEP_ALIVE:
 453                 therm_event = THERMAL_EVENT_KEEP_ALIVE;
 454                 break;
 455         case INT3400_ODVP_CHANGED:
 456                 evaluate_odvp(priv);
 457                 therm_event = THERMAL_DEVICE_POWER_CAPABILITY_CHANGED;
 458                 break;
 459         default:
 460                 /* Ignore unknown notification codes sent to INT3400 device */
 461                 return;
 462         }
 463
 464         dev = thermal_zone_device(priv->thermal);
 465
 466         thermal_prop[0] = kasprintf(GFP_KERNEL, "NAME=%s", thermal_zone_device_type(priv->thermal));
 467         thermal_prop[1] = kasprintf(GFP_KERNEL, "TEMP=%d", INT3400_FAKE_TEMP);
 468         thermal_prop[2] = kasprintf(GFP_KERNEL, "TRIP=");
 469         thermal_prop[3] = kasprintf(GFP_KERNEL, "EVENT=%d", therm_event);
 470         thermal_prop[4] = NULL;
 471         kobject_uevent_env(&dev->kobj, KOBJ_CHANGE, thermal_prop);
 472         kfree(thermal_prop[0]);
 473         kfree(thermal_prop[1]);
 474         kfree(thermal_prop[2]);
 475         kfree(thermal_prop[3]);
 476 }
 477
 478 static int int3400_thermal_get_temp(struct thermal_zone_device *thermal,
 479                         int *temp)
 480 {
 481         *temp = INT3400_FAKE_TEMP;
 482         return 0;
 483 }
 484
 485 static int int3400_thermal_change_mode(struct thermal_zone_device *thermal,
 486                                        enum thermal_device_mode mode)
 487 {
 488         struct int3400_thermal_priv *priv = thermal_zone_device_priv(thermal);
 489         int result = 0;
 490         int enabled;
 491
 492         if (!priv)
 493                 return -EINVAL;
 494
 495         enabled = mode == THERMAL_DEVICE_ENABLED;
 496
 497         if (priv->os_uuid_mask) {
 498                 if (!enabled) {
 499                         priv->os_uuid_mask = 0;
 500                         result = set_os_uuid_mask(priv, priv->os_uuid_mask);
 501                 }
 502                 goto eval_odvp;
 503         }
 504
 505         if (priv->current_uuid_index < 0 ||
 506             priv->current_uuid_index >= INT3400_THERMAL_MAXIMUM_UUID)
 507                 return -EINVAL;
 508
 509         result = int3400_thermal_run_osc(priv->adev->handle,
 510                                          int3400_thermal_uuids[priv->current_uuid_index],
 511                                          &enabled);
 512 eval_odvp:
 513         evaluate_odvp(priv);
 514
 515         return result;
 516 }
 517
 518 static struct thermal_zone_device_ops int3400_thermal_ops = {
 519         .get_temp = int3400_thermal_get_temp,
 520         .change_mode = int3400_thermal_change_mode,
 521 };
 522
 523 static struct thermal_zone_params int3400_thermal_params = {
 524         .governor_name = "user_space",
 525         .no_hwmon = true,
 526 };
 527
 528 static void int3400_setup_gddv(struct int3400_thermal_priv *priv)
 529 {
 530         struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
 531         union acpi_object *obj;
 532         acpi_status status;
 533
 534         status = acpi_evaluate_object(priv->adev->handle, "GDDV", NULL,
 535                                       &buffer);
 536         if (ACPI_FAILURE(status) || !buffer.length)
 537                 return;
 538
 539         obj = buffer.pointer;
 540         if (obj->type != ACPI_TYPE_PACKAGE || obj->package.count != 1
 541             || obj->package.elements[0].type != ACPI_TYPE_BUFFER)
 542                 goto out_free;
 543
 544         priv->data_vault = kmemdup(obj->package.elements[0].buffer.pointer,
 545                                    obj->package.elements[0].buffer.length,
 546                                    GFP_KERNEL);
 547         if (ZERO_OR_NULL_PTR(priv->data_vault))
 548                 goto out_free;
 549
 550         bin_attr_data_vault.private = priv->data_vault;
 551         bin_attr_data_vault.size = obj->package.elements[0].buffer.length;
 552 out_free:
 553         kfree(buffer.pointer);
 554 }
 555
 556 static int int3400_thermal_probe(struct platform_device *pdev)
 557 {
 558         struct acpi_device *adev = ACPI_COMPANION(&pdev->dev);
 559         struct int3400_thermal_priv *priv;
 560         int result;
 561
 562         if (!adev)
 563                 return -ENODEV;
 564
 565         priv = kzalloc(sizeof(*priv), GFP_KERNEL);
 566         if (!priv)
 567                 return -ENOMEM;
 568
 569         priv->pdev = pdev;
 570         priv->adev = adev;
 571
 572         result = int3400_thermal_get_uuids(priv);
 573
 574         /* Missing IDSP isn't fatal */
 575         if (result && result != -ENODEV)
 576                 goto free_priv;
 577
 578         priv->current_uuid_index = -1;
 579
 580         result = acpi_parse_art(priv->adev->handle, &priv->art_count,
 581                                 &priv->arts, true);
 582         if (result)
 583                 dev_dbg(&pdev->dev, "_ART table parsing error\n");
 584
 585         result = acpi_parse_trt(priv->adev->handle, &priv->trt_count,
 586                                 &priv->trts, true);
 587         if (result)
 588                 dev_dbg(&pdev->dev, "_TRT table parsing error\n");
 589
 590         platform_set_drvdata(pdev, priv);
 591
 592         int3400_setup_gddv(priv);
 593
 594         evaluate_odvp(priv);
 595
 596         priv->thermal = thermal_tripless_zone_device_register("INT3400 Thermal", priv,
 597                                                               &int3400_thermal_ops,
 598                                                               &int3400_thermal_params);
 599         if (IS_ERR(priv->thermal)) {
 600                 result = PTR_ERR(priv->thermal);
 601                 goto free_art_trt;
 602         }
 603
 604         priv->rel_misc_dev_res = acpi_thermal_rel_misc_device_add(
 605                                                         priv->adev->handle);
 606
 607         result = sysfs_create_group(&pdev->dev.kobj, &uuid_attribute_group);
 608         if (result)
 609                 goto free_rel_misc;
 610
 611         if (acpi_has_method(priv->adev->handle, "IMOK")) {
 612                 result = sysfs_create_group(&pdev->dev.kobj, &imok_attribute_group);
 613                 if (result)
 614                         goto free_imok;
 615         }
 616
 617         if (!ZERO_OR_NULL_PTR(priv->data_vault)) {
 618                 result = device_create_bin_file(&pdev->dev, &bin_attr_data_vault);
 619                 if (result)
 620                         goto free_uuid;
 621         }
 622
 623         result = acpi_install_notify_handler(
 624                         priv->adev->handle, ACPI_DEVICE_NOTIFY, int3400_notify,
 625                         (void *)priv);
 626         if (result)
 627                 goto free_sysfs;
 628
 629         result = production_mode_init(priv);
 630         if (result)
 631                 goto free_notify;
 632
 633         return 0;
 634
 635 free_notify:
 636         acpi_remove_notify_handler(priv->adev->handle, ACPI_DEVICE_NOTIFY,
 637                                    int3400_notify);
 638 free_sysfs:
 639         cleanup_odvp(priv);
 640         if (!ZERO_OR_NULL_PTR(priv->data_vault)) {
 641                 device_remove_bin_file(&pdev->dev, &bin_attr_data_vault);
 642                 kfree(priv->data_vault);
 643         }
 644 free_uuid:
 645         sysfs_remove_group(&pdev->dev.kobj, &uuid_attribute_group);
 646 free_imok:
 647         sysfs_remove_group(&pdev->dev.kobj, &imok_attribute_group);
 648 free_rel_misc:
 649         if (!priv->rel_misc_dev_res)
 650                 acpi_thermal_rel_misc_device_remove(priv->adev->handle);
 651         thermal_zone_device_unregister(priv->thermal);
 652 free_art_trt:
 653         kfree(priv->trts);
 654         kfree(priv->arts);
 655 free_priv:
 656         kfree(priv);
 657         return result;
 658 }
 659
 660 static void int3400_thermal_remove(struct platform_device *pdev)
 661 {
 662         struct int3400_thermal_priv *priv = platform_get_drvdata(pdev);
 663
 664         production_mode_exit(priv);
 665
 666         acpi_remove_notify_handler(
 667                         priv->adev->handle, ACPI_DEVICE_NOTIFY,
 668                         int3400_notify);
 669
 670         cleanup_odvp(priv);
 671
 672         if (!priv->rel_misc_dev_res)
 673                 acpi_thermal_rel_misc_device_remove(priv->adev->handle);
 674
 675         if (!ZERO_OR_NULL_PTR(priv->data_vault))
 676                 device_remove_bin_file(&pdev->dev, &bin_attr_data_vault);
 677         sysfs_remove_group(&pdev->dev.kobj, &uuid_attribute_group);
 678         sysfs_remove_group(&pdev->dev.kobj, &imok_attribute_group);
 679         thermal_zone_device_unregister(priv->thermal);
 680         kfree(priv->data_vault);
 681         kfree(priv->trts);
 682         kfree(priv->arts);
 683         kfree(priv);
 684 }
 685
 686 static const struct acpi_device_id int3400_thermal_match[] = {
 687         {"INT3400", 0},
 688         {"INTC1040", 0},
 689         {"INTC1041", 0},
 690         {"INTC1042", 0},
 691         {"INTC1068", 0},
 692         {"INTC10A0", 0},
 693         {}
 694 };
 695
 696 MODULE_DEVICE_TABLE(acpi, int3400_thermal_match);
 697
 698 static struct platform_driver int3400_thermal_driver = {
 699         .probe = int3400_thermal_probe,
 700         .remove = int3400_thermal_remove,
 701         .driver = {
 702                    .name = "int3400 thermal",
 703                    .acpi_match_table = ACPI_PTR(int3400_thermal_match),
 704                    },
 705 };
 706
 707 module_platform_driver(int3400_thermal_driver);
 708
 709 MODULE_DESCRIPTION("INT3400 Thermal driver");
 710 MODULE_AUTHOR("Zhang Rui <[email protected]>");
 711 MODULE_LICENSE("GPL");