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 #define INT3400_FAKE_TEMP (20 * 1000) /* faked temp sensor with 20C */
19 /* UUID prefix length for comparison - sufficient for all UUIDs */
20 #define INT3400_UUID_PREFIX_LEN 7
21
22 enum int3400_thermal_uuid {
23 INT3400_THERMAL_ACTIVE = 0,
24 INT3400_THERMAL_PASSIVE_1,
25 INT3400_THERMAL_CRITICAL,
26 INT3400_THERMAL_ADAPTIVE_PERFORMANCE,
27 INT3400_THERMAL_EMERGENCY_CALL_MODE,
28 INT3400_THERMAL_PASSIVE_2,
29 INT3400_THERMAL_POWER_BOSS,
30 INT3400_THERMAL_VIRTUAL_SENSOR,
31 INT3400_THERMAL_COOLING_MODE,
32 INT3400_THERMAL_HARDWARE_DUTY_CYCLING,
33 INT3400_THERMAL_MAXIMUM_UUID,
34 };
35
36 static char *int3400_thermal_uuids[INT3400_THERMAL_MAXIMUM_UUID] = {
37 "3A95C389-E4B8-4629-A526-C52C88626BAE",
38 "42A441D6-AE6A-462b-A84B-4A8CE79027D3",
39 "97C68AE7-15FA-499c-B8C9-5DA81D606E0A",
40 "63BE270F-1C11-48FD-A6F7-3AF253FF3E2D",
41 "5349962F-71E6-431D-9AE8-0A635B710AEE",
42 "9E04115A-AE87-4D1C-9500-0F3E340BFE75",
43 "F5A35014-C209-46A4-993A-EB56DE7530A1",
44 "6ED722A7-9240-48A5-B479-31EEF723D7CF",
45 "16CAF1B7-DD38-40ED-B1C1-1B8A1913D531",
46 "BE84BABF-C4D4-403D-B495-3128FD44dAC1",
47 };
48
49 struct odvp_attr;
50
51 struct int3400_thermal_priv {
52 struct acpi_device *adev;
53 struct platform_device *pdev;
54 struct thermal_zone_device *thermal;
55 int art_count;
56 struct art *arts;
57 int trt_count;
58 struct trt *trts;
59 u32 uuid_bitmap;
60 int rel_misc_dev_res;
61 int current_uuid_index;
62 char *data_vault;
63 int odvp_count;
64 int *odvp;
65 u32 os_uuid_mask;
66 int production_mode;
67 struct odvp_attr *odvp_attrs;
68 };
69
70 static int evaluate_odvp(struct int3400_thermal_priv *priv);
71
72 struct odvp_attr {
73 int odvp;
74 struct int3400_thermal_priv *priv;
75 struct device_attribute attr;
76 };
77
78 static BIN_ATTR_SIMPLE_RO(data_vault);
79
imok_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)80 static ssize_t imok_store(struct device *dev, struct device_attribute *attr,
81 const char *buf, size_t count)
82 {
83 struct int3400_thermal_priv *priv = dev_get_drvdata(dev);
84 acpi_status status;
85 int input, ret;
86
87 ret = kstrtouint(buf, 10, &input);
88 if (ret)
89 return ret;
90 status = acpi_execute_simple_method(priv->adev->handle, "IMOK", input);
91 if (ACPI_FAILURE(status))
92 return -EIO;
93
94 return count;
95 }
96
97 static DEVICE_ATTR_WO(imok);
98
99 static struct attribute *imok_attr[] = {
100 &dev_attr_imok.attr,
101 NULL
102 };
103
104 static const struct attribute_group imok_attribute_group = {
105 .attrs = imok_attr,
106 };
107
available_uuids_show(struct device * dev,struct device_attribute * attr,char * buf)108 static ssize_t available_uuids_show(struct device *dev,
109 struct device_attribute *attr,
110 char *buf)
111 {
112 struct int3400_thermal_priv *priv = dev_get_drvdata(dev);
113 int i;
114 int length = 0;
115
116 if (!priv->uuid_bitmap)
117 return sysfs_emit(buf, "UNKNOWN\n");
118
119 for (i = 0; i < INT3400_THERMAL_MAXIMUM_UUID; i++) {
120 if (priv->uuid_bitmap & (1 << i))
121 length += sysfs_emit_at(buf, length, "%s\n", int3400_thermal_uuids[i]);
122 }
123
124 return length;
125 }
126
current_uuid_show(struct device * dev,struct device_attribute * devattr,char * buf)127 static ssize_t current_uuid_show(struct device *dev,
128 struct device_attribute *devattr, char *buf)
129 {
130 struct int3400_thermal_priv *priv = dev_get_drvdata(dev);
131 int i, length = 0;
132
133 if (priv->current_uuid_index >= 0)
134 return sysfs_emit(buf, "%s\n",
135 int3400_thermal_uuids[priv->current_uuid_index]);
136
137 for (i = 0; i <= INT3400_THERMAL_CRITICAL; i++) {
138 if (priv->os_uuid_mask & BIT(i))
139 length += sysfs_emit_at(buf, length, "%s\n", int3400_thermal_uuids[i]);
140 }
141
142 if (length)
143 return length;
144
145 return sysfs_emit(buf, "INVALID\n");
146 }
147
int3400_thermal_run_osc(acpi_handle handle,char * uuid_str,int * enable)148 static int int3400_thermal_run_osc(acpi_handle handle, char *uuid_str, int *enable)
149 {
150 u32 ret, buf[2];
151 acpi_status status;
152 int result = 0;
153 struct acpi_osc_context context = {
154 .uuid_str = uuid_str,
155 .rev = 1,
156 .cap.length = 8,
157 .cap.pointer = buf,
158 };
159
160 buf[OSC_QUERY_DWORD] = 0;
161 buf[OSC_SUPPORT_DWORD] = *enable;
162
163 status = acpi_run_osc(handle, &context);
164 if (ACPI_SUCCESS(status)) {
165 ret = *((u32 *)(context.ret.pointer + 4));
166 if (ret != *enable)
167 result = -EPERM;
168
169 kfree(context.ret.pointer);
170 } else
171 result = -EPERM;
172
173 return result;
174 }
175
set_os_uuid_mask(struct int3400_thermal_priv * priv,u32 mask)176 static int set_os_uuid_mask(struct int3400_thermal_priv *priv, u32 mask)
177 {
178 int cap = 0;
179
180 /*
181 * Capability bits:
182 * Bit 0: set to 1 to indicate DPTF is active
183 * Bi1 1: set to 1 to active cooling is supported by user space daemon
184 * Bit 2: set to 1 to passive cooling is supported by user space daemon
185 * Bit 3: set to 1 to critical trip is handled by user space daemon
186 */
187 if (mask)
188 cap = (priv->os_uuid_mask << 1) | 0x01;
189
190 return int3400_thermal_run_osc(priv->adev->handle,
191 "b23ba85d-c8b7-3542-88de-8de2ffcfd698",
192 &cap);
193 }
194
current_uuid_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)195 static ssize_t current_uuid_store(struct device *dev,
196 struct device_attribute *attr,
197 const char *buf, size_t count)
198 {
199 struct int3400_thermal_priv *priv = dev_get_drvdata(dev);
200 int ret, i;
201
202 for (i = 0; i < INT3400_THERMAL_MAXIMUM_UUID; ++i) {
203 if (!strncmp(buf, int3400_thermal_uuids[i],
204 INT3400_UUID_PREFIX_LEN)) {
205 /*
206 * If we have a list of supported UUIDs, make sure
207 * this one is supported.
208 */
209 if (priv->uuid_bitmap & BIT(i)) {
210 priv->current_uuid_index = i;
211 return count;
212 }
213
214 /*
215 * There is support of only 3 policies via the new
216 * _OSC to inform OS capability:
217 * INT3400_THERMAL_ACTIVE
218 * INT3400_THERMAL_PASSIVE_1
219 * INT3400_THERMAL_CRITICAL
220 */
221
222 if (i > INT3400_THERMAL_CRITICAL)
223 return -EINVAL;
224
225 priv->os_uuid_mask |= BIT(i);
226
227 break;
228 }
229 }
230
231 if (priv->os_uuid_mask) {
232 ret = set_os_uuid_mask(priv, priv->os_uuid_mask);
233 if (ret)
234 return ret;
235 }
236
237 return count;
238 }
239
240 static DEVICE_ATTR_RW(current_uuid);
241 static DEVICE_ATTR_RO(available_uuids);
242 static struct attribute *uuid_attrs[] = {
243 &dev_attr_available_uuids.attr,
244 &dev_attr_current_uuid.attr,
245 NULL
246 };
247
248 static const struct attribute_group uuid_attribute_group = {
249 .attrs = uuid_attrs,
250 .name = "uuids"
251 };
252
int3400_thermal_get_uuids(struct int3400_thermal_priv * priv)253 static int int3400_thermal_get_uuids(struct int3400_thermal_priv *priv)
254 {
255 struct acpi_buffer buf = { ACPI_ALLOCATE_BUFFER, NULL};
256 union acpi_object *obja, *objb;
257 int i, j;
258 int result = 0;
259 acpi_status status;
260
261 status = acpi_evaluate_object(priv->adev->handle, "IDSP", NULL, &buf);
262 if (ACPI_FAILURE(status))
263 return -ENODEV;
264
265 obja = (union acpi_object *)buf.pointer;
266 if (obja->type != ACPI_TYPE_PACKAGE) {
267 result = -EINVAL;
268 goto end;
269 }
270
271 for (i = 0; i < obja->package.count; i++) {
272 objb = &obja->package.elements[i];
273 if (objb->type != ACPI_TYPE_BUFFER) {
274 result = -EINVAL;
275 goto end;
276 }
277
278 /* UUID must be 16 bytes */
279 if (objb->buffer.length != 16) {
280 result = -EINVAL;
281 goto end;
282 }
283
284 for (j = 0; j < INT3400_THERMAL_MAXIMUM_UUID; j++) {
285 guid_t guid;
286
287 guid_parse(int3400_thermal_uuids[j], &guid);
288 if (guid_equal((guid_t *)objb->buffer.pointer, &guid)) {
289 priv->uuid_bitmap |= (1 << j);
290 break;
291 }
292 }
293 }
294
295 end:
296 kfree(buf.pointer);
297 return result;
298 }
299
production_mode_show(struct device * dev,struct device_attribute * attr,char * buf)300 static ssize_t production_mode_show(struct device *dev, struct device_attribute *attr,
301 char *buf)
302 {
303 struct int3400_thermal_priv *priv = dev_get_drvdata(dev);
304
305 return sysfs_emit(buf, "%d\n", priv->production_mode);
306 }
307
308 static DEVICE_ATTR_RO(production_mode);
309
production_mode_init(struct int3400_thermal_priv * priv)310 static int production_mode_init(struct int3400_thermal_priv *priv)
311 {
312 unsigned long long mode;
313 acpi_status status;
314 int ret;
315
316 priv->production_mode = -1;
317
318 status = acpi_evaluate_integer(priv->adev->handle, "DCFG", NULL, &mode);
319 /* If the method is not present, this is not an error */
320 if (ACPI_FAILURE(status))
321 return 0;
322
323 ret = sysfs_create_file(&priv->pdev->dev.kobj, &dev_attr_production_mode.attr);
324 if (ret)
325 return ret;
326
327 priv->production_mode = mode;
328
329 return 0;
330 }
331
production_mode_exit(struct int3400_thermal_priv * priv)332 static void production_mode_exit(struct int3400_thermal_priv *priv)
333 {
334 if (priv->production_mode >= 0)
335 sysfs_remove_file(&priv->pdev->dev.kobj, &dev_attr_production_mode.attr);
336 }
337
odvp_show(struct device * dev,struct device_attribute * attr,char * buf)338 static ssize_t odvp_show(struct device *dev, struct device_attribute *attr,
339 char *buf)
340 {
341 struct odvp_attr *odvp_attr;
342
343 odvp_attr = container_of(attr, struct odvp_attr, attr);
344
345 return sysfs_emit(buf, "%d\n", odvp_attr->priv->odvp[odvp_attr->odvp]);
346 }
347
cleanup_odvp(struct int3400_thermal_priv * priv)348 static void cleanup_odvp(struct int3400_thermal_priv *priv)
349 {
350 int i;
351
352 if (priv->odvp_attrs) {
353 for (i = 0; i < priv->odvp_count; i++) {
354 sysfs_remove_file(&priv->pdev->dev.kobj,
355 &priv->odvp_attrs[i].attr.attr);
356 kfree(priv->odvp_attrs[i].attr.attr.name);
357 }
358 kfree(priv->odvp_attrs);
359 }
360 kfree(priv->odvp);
361 priv->odvp_count = 0;
362 }
363
evaluate_odvp(struct int3400_thermal_priv * priv)364 static int evaluate_odvp(struct int3400_thermal_priv *priv)
365 {
366 struct acpi_buffer odvp = { ACPI_ALLOCATE_BUFFER, NULL };
367 union acpi_object *obj = NULL;
368 acpi_status status;
369 int i, ret;
370
371 status = acpi_evaluate_object(priv->adev->handle, "ODVP", NULL, &odvp);
372 if (ACPI_FAILURE(status)) {
373 ret = -EINVAL;
374 goto out_err;
375 }
376
377 obj = odvp.pointer;
378 if (obj->type != ACPI_TYPE_PACKAGE) {
379 ret = -EINVAL;
380 goto out_err;
381 }
382
383 if (priv->odvp == NULL) {
384 priv->odvp_count = obj->package.count;
385 priv->odvp = kmalloc_objs(int, priv->odvp_count, GFP_KERNEL);
386 if (!priv->odvp) {
387 ret = -ENOMEM;
388 goto out_err;
389 }
390 }
391
392 if (priv->odvp_attrs == NULL) {
393 priv->odvp_attrs = kzalloc_objs(struct odvp_attr,
394 priv->odvp_count, 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
int3400_notify(acpi_handle handle,u32 event,void * data)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
int3400_thermal_get_temp(struct thermal_zone_device * thermal,int * temp)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
int3400_thermal_change_mode(struct thermal_zone_device * thermal,enum thermal_device_mode mode)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 const 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 .no_hwmon = true,
525 };
526
int3400_setup_gddv(struct int3400_thermal_priv * priv)527 static void int3400_setup_gddv(struct int3400_thermal_priv *priv)
528 {
529 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
530 union acpi_object *obj;
531 acpi_status status;
532
533 status = acpi_evaluate_object(priv->adev->handle, "GDDV", NULL,
534 &buffer);
535 if (ACPI_FAILURE(status) || !buffer.length)
536 return;
537
538 obj = buffer.pointer;
539 if (obj->type != ACPI_TYPE_PACKAGE || obj->package.count != 1
540 || obj->package.elements[0].type != ACPI_TYPE_BUFFER)
541 goto out_free;
542
543 priv->data_vault = kmemdup(obj->package.elements[0].buffer.pointer,
544 obj->package.elements[0].buffer.length,
545 GFP_KERNEL);
546 if (ZERO_OR_NULL_PTR(priv->data_vault))
547 goto out_free;
548
549 bin_attr_data_vault.private = priv->data_vault;
550 bin_attr_data_vault.size = obj->package.elements[0].buffer.length;
551 out_free:
552 kfree(buffer.pointer);
553 }
554
int3400_thermal_probe(struct platform_device * pdev)555 static int int3400_thermal_probe(struct platform_device *pdev)
556 {
557 struct acpi_device *adev = ACPI_COMPANION(&pdev->dev);
558 struct int3400_thermal_priv *priv;
559 int result;
560
561 if (!adev)
562 return -ENODEV;
563
564 priv = kzalloc_obj(*priv, GFP_KERNEL);
565 if (!priv)
566 return -ENOMEM;
567
568 priv->pdev = pdev;
569 priv->adev = adev;
570
571 result = int3400_thermal_get_uuids(priv);
572
573 /* Missing IDSP isn't fatal */
574 if (result && result != -ENODEV)
575 goto free_priv;
576
577 priv->current_uuid_index = -1;
578
579 result = acpi_parse_art(priv->adev->handle, &priv->art_count,
580 &priv->arts, true);
581 if (result)
582 dev_dbg(&pdev->dev, "_ART table parsing error\n");
583
584 result = acpi_parse_trt(priv->adev->handle, &priv->trt_count,
585 &priv->trts, true);
586 if (result)
587 dev_dbg(&pdev->dev, "_TRT table parsing error\n");
588
589 platform_set_drvdata(pdev, priv);
590
591 int3400_setup_gddv(priv);
592
593 evaluate_odvp(priv);
594
595 priv->thermal = thermal_tripless_zone_device_register("INT3400 Thermal", priv,
596 &int3400_thermal_ops,
597 &int3400_thermal_params);
598 if (IS_ERR(priv->thermal)) {
599 result = PTR_ERR(priv->thermal);
600 goto free_art_trt;
601 }
602
603 priv->rel_misc_dev_res = acpi_thermal_rel_misc_device_add(
604 priv->adev->handle);
605
606 result = sysfs_create_group(&pdev->dev.kobj, &uuid_attribute_group);
607 if (result)
608 goto free_rel_misc;
609
610 if (acpi_has_method(priv->adev->handle, "IMOK")) {
611 result = sysfs_create_group(&pdev->dev.kobj, &imok_attribute_group);
612 if (result)
613 goto free_imok;
614 }
615
616 if (!ZERO_OR_NULL_PTR(priv->data_vault)) {
617 result = device_create_bin_file(&pdev->dev, &bin_attr_data_vault);
618 if (result)
619 goto free_uuid;
620 }
621
622 result = acpi_install_notify_handler(
623 priv->adev->handle, ACPI_DEVICE_NOTIFY, int3400_notify,
624 (void *)priv);
625 if (result)
626 goto free_sysfs;
627
628 result = production_mode_init(priv);
629 if (result)
630 goto free_notify;
631
632 return 0;
633
634 free_notify:
635 acpi_remove_notify_handler(priv->adev->handle, ACPI_DEVICE_NOTIFY,
636 int3400_notify);
637 free_sysfs:
638 cleanup_odvp(priv);
639 if (!ZERO_OR_NULL_PTR(priv->data_vault)) {
640 device_remove_bin_file(&pdev->dev, &bin_attr_data_vault);
641 kfree(priv->data_vault);
642 }
643 free_uuid:
644 sysfs_remove_group(&pdev->dev.kobj, &uuid_attribute_group);
645 free_imok:
646 sysfs_remove_group(&pdev->dev.kobj, &imok_attribute_group);
647 free_rel_misc:
648 if (!priv->rel_misc_dev_res)
649 acpi_thermal_rel_misc_device_remove(priv->adev->handle);
650 thermal_zone_device_unregister(priv->thermal);
651 free_art_trt:
652 kfree(priv->trts);
653 kfree(priv->arts);
654 free_priv:
655 kfree(priv);
656 return result;
657 }
658
int3400_thermal_remove(struct platform_device * pdev)659 static void int3400_thermal_remove(struct platform_device *pdev)
660 {
661 struct int3400_thermal_priv *priv = platform_get_drvdata(pdev);
662
663 production_mode_exit(priv);
664
665 acpi_remove_notify_handler(
666 priv->adev->handle, ACPI_DEVICE_NOTIFY,
667 int3400_notify);
668
669 cleanup_odvp(priv);
670
671 if (!priv->rel_misc_dev_res)
672 acpi_thermal_rel_misc_device_remove(priv->adev->handle);
673
674 if (!ZERO_OR_NULL_PTR(priv->data_vault))
675 device_remove_bin_file(&pdev->dev, &bin_attr_data_vault);
676 sysfs_remove_group(&pdev->dev.kobj, &uuid_attribute_group);
677 sysfs_remove_group(&pdev->dev.kobj, &imok_attribute_group);
678 thermal_zone_device_unregister(priv->thermal);
679 kfree(priv->data_vault);
680 kfree(priv->trts);
681 kfree(priv->arts);
682 kfree(priv);
683 }
684
685 static const struct acpi_device_id int3400_thermal_match[] = {
686 {"INT3400", 0},
687 {"INTC1040", 0},
688 {"INTC1041", 0},
689 {"INTC1042", 0},
690 {"INTC1068", 0},
691 {"INTC10A0", 0},
692 {"INTC10D4", 0},
693 {"INTC10FC", 0},
694 {"INTC10F3", 0},
695 {}
696 };
697
698 MODULE_DEVICE_TABLE(acpi, int3400_thermal_match);
699
700 static struct platform_driver int3400_thermal_driver = {
701 .probe = int3400_thermal_probe,
702 .remove = int3400_thermal_remove,
703 .driver = {
704 .name = "int3400 thermal",
705 .acpi_match_table = ACPI_PTR(int3400_thermal_match),
706 },
707 };
708
709 module_platform_driver(int3400_thermal_driver);
710
711 MODULE_DESCRIPTION("INT3400 Thermal driver");
712 MODULE_AUTHOR("Zhang Rui <rui.zhang@intel.com>");
713 MODULE_LICENSE("GPL");
714