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
20enum 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
34static 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
47struct odvp_attr;
48
49struct 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
68static int evaluate_odvp(struct int3400_thermal_priv *priv);
69
70struct odvp_attr {
71 int odvp;
72 struct int3400_thermal_priv *priv;
73 struct device_attribute attr;
74};
75
76static ssize_t data_vault_read(struct file *file, struct kobject *kobj,
77 struct bin_attribute *attr, char *buf, loff_t off, size_t count)
78{
79 memcpy(buf, attr->private + off, count);
80 return count;
81}
82
83static BIN_ATTR_RO(data_vault, 0);
84
85static struct bin_attribute *data_attributes[] = {
86 &bin_attr_data_vault,
87 NULL,
88};
89
90static ssize_t imok_store(struct device *dev, struct device_attribute *attr,
91 const char *buf, size_t count)
92{
93 struct int3400_thermal_priv *priv = dev_get_drvdata(dev);
94 acpi_status status;
95 int input, ret;
96
97 ret = kstrtouint(s: buf, base: 10, res: &input);
98 if (ret)
99 return ret;
100 status = acpi_execute_simple_method(handle: priv->adev->handle, method: "IMOK", arg: input);
101 if (ACPI_FAILURE(status))
102 return -EIO;
103
104 return count;
105}
106
107static DEVICE_ATTR_WO(imok);
108
109static struct attribute *imok_attr[] = {
110 &dev_attr_imok.attr,
111 NULL
112};
113
114static const struct attribute_group imok_attribute_group = {
115 .attrs = imok_attr,
116};
117
118static const struct attribute_group data_attribute_group = {
119 .bin_attrs = data_attributes,
120};
121
122static ssize_t available_uuids_show(struct device *dev,
123 struct device_attribute *attr,
124 char *buf)
125{
126 struct int3400_thermal_priv *priv = dev_get_drvdata(dev);
127 int i;
128 int length = 0;
129
130 if (!priv->uuid_bitmap)
131 return sprintf(buf, fmt: "UNKNOWN\n");
132
133 for (i = 0; i < INT3400_THERMAL_MAXIMUM_UUID; i++) {
134 if (priv->uuid_bitmap & (1 << i))
135 length += sysfs_emit_at(buf, at: length, fmt: "%s\n", int3400_thermal_uuids[i]);
136 }
137
138 return length;
139}
140
141static ssize_t current_uuid_show(struct device *dev,
142 struct device_attribute *devattr, char *buf)
143{
144 struct int3400_thermal_priv *priv = dev_get_drvdata(dev);
145 int i, length = 0;
146
147 if (priv->current_uuid_index > 0)
148 return sprintf(buf, fmt: "%s\n",
149 int3400_thermal_uuids[priv->current_uuid_index]);
150
151 for (i = 0; i <= INT3400_THERMAL_CRITICAL; i++) {
152 if (priv->os_uuid_mask & BIT(i))
153 length += sysfs_emit_at(buf, at: length, fmt: "%s\n", int3400_thermal_uuids[i]);
154 }
155
156 if (length)
157 return length;
158
159 return sprintf(buf, fmt: "INVALID\n");
160}
161
162static int int3400_thermal_run_osc(acpi_handle handle, char *uuid_str, int *enable)
163{
164 u32 ret, buf[2];
165 acpi_status status;
166 int result = 0;
167 struct acpi_osc_context context = {
168 .uuid_str = uuid_str,
169 .rev = 1,
170 .cap.length = 8,
171 .cap.pointer = buf,
172 };
173
174 buf[OSC_QUERY_DWORD] = 0;
175 buf[OSC_SUPPORT_DWORD] = *enable;
176
177 status = acpi_run_osc(handle, context: &context);
178 if (ACPI_SUCCESS(status)) {
179 ret = *((u32 *)(context.ret.pointer + 4));
180 if (ret != *enable)
181 result = -EPERM;
182
183 kfree(objp: context.ret.pointer);
184 } else
185 result = -EPERM;
186
187 return result;
188}
189
190static int set_os_uuid_mask(struct int3400_thermal_priv *priv, u32 mask)
191{
192 int cap = 0;
193
194 /*
195 * Capability bits:
196 * Bit 0: set to 1 to indicate DPTF is active
197 * Bi1 1: set to 1 to active cooling is supported by user space daemon
198 * Bit 2: set to 1 to passive cooling is supported by user space daemon
199 * Bit 3: set to 1 to critical trip is handled by user space daemon
200 */
201 if (mask)
202 cap = (priv->os_uuid_mask << 1) | 0x01;
203
204 return int3400_thermal_run_osc(handle: priv->adev->handle,
205 uuid_str: "b23ba85d-c8b7-3542-88de-8de2ffcfd698",
206 enable: &cap);
207}
208
209static ssize_t current_uuid_store(struct device *dev,
210 struct device_attribute *attr,
211 const char *buf, size_t count)
212{
213 struct int3400_thermal_priv *priv = dev_get_drvdata(dev);
214 int ret, i;
215
216 for (i = 0; i < INT3400_THERMAL_MAXIMUM_UUID; ++i) {
217 if (!strncmp(buf, int3400_thermal_uuids[i],
218 sizeof(int3400_thermal_uuids[i]) - 1)) {
219 /*
220 * If we have a list of supported UUIDs, make sure
221 * this one is supported.
222 */
223 if (priv->uuid_bitmap & BIT(i)) {
224 priv->current_uuid_index = i;
225 return count;
226 }
227
228 /*
229 * There is support of only 3 policies via the new
230 * _OSC to inform OS capability:
231 * INT3400_THERMAL_ACTIVE
232 * INT3400_THERMAL_PASSIVE_1
233 * INT3400_THERMAL_CRITICAL
234 */
235
236 if (i > INT3400_THERMAL_CRITICAL)
237 return -EINVAL;
238
239 priv->os_uuid_mask |= BIT(i);
240
241 break;
242 }
243 }
244
245 if (priv->os_uuid_mask) {
246 ret = set_os_uuid_mask(priv, mask: priv->os_uuid_mask);
247 if (ret)
248 return ret;
249 }
250
251 return count;
252}
253
254static DEVICE_ATTR_RW(current_uuid);
255static DEVICE_ATTR_RO(available_uuids);
256static struct attribute *uuid_attrs[] = {
257 &dev_attr_available_uuids.attr,
258 &dev_attr_current_uuid.attr,
259 NULL
260};
261
262static const struct attribute_group uuid_attribute_group = {
263 .attrs = uuid_attrs,
264 .name = "uuids"
265};
266
267static 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(object: priv->adev->handle, pathname: "IDSP", NULL, return_object_buffer: &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(uuid: int3400_thermal_uuids[j], u: &guid);
302 if (guid_equal(u1: (guid_t *)objb->buffer.pointer, u2: &guid)) {
303 priv->uuid_bitmap |= (1 << j);
304 break;
305 }
306 }
307 }
308
309end:
310 kfree(objp: buf.pointer);
311 return result;
312}
313
314static ssize_t production_mode_show(struct device *dev, struct device_attribute *attr,
315 char *buf)
316{
317 struct int3400_thermal_priv *priv = dev_get_drvdata(dev);
318
319 return sysfs_emit(buf, fmt: "%d\n", priv->production_mode);
320}
321
322static DEVICE_ATTR_RO(production_mode);
323
324static int production_mode_init(struct int3400_thermal_priv *priv)
325{
326 unsigned long long mode;
327 acpi_status status;
328 int ret;
329
330 priv->production_mode = -1;
331
332 status = acpi_evaluate_integer(handle: priv->adev->handle, pathname: "DCFG", NULL, data: &mode);
333 /* If the method is not present, this is not an error */
334 if (ACPI_FAILURE(status))
335 return 0;
336
337 ret = sysfs_create_file(kobj: &priv->pdev->dev.kobj, attr: &dev_attr_production_mode.attr);
338 if (ret)
339 return ret;
340
341 priv->production_mode = mode;
342
343 return 0;
344}
345
346static void production_mode_exit(struct int3400_thermal_priv *priv)
347{
348 if (priv->production_mode >= 0)
349 sysfs_remove_file(kobj: &priv->pdev->dev.kobj, attr: &dev_attr_production_mode.attr);
350}
351
352static ssize_t odvp_show(struct device *dev, struct device_attribute *attr,
353 char *buf)
354{
355 struct odvp_attr *odvp_attr;
356
357 odvp_attr = container_of(attr, struct odvp_attr, attr);
358
359 return sprintf(buf, fmt: "%d\n", odvp_attr->priv->odvp[odvp_attr->odvp]);
360}
361
362static void cleanup_odvp(struct int3400_thermal_priv *priv)
363{
364 int i;
365
366 if (priv->odvp_attrs) {
367 for (i = 0; i < priv->odvp_count; i++) {
368 sysfs_remove_file(kobj: &priv->pdev->dev.kobj,
369 attr: &priv->odvp_attrs[i].attr.attr);
370 kfree(objp: priv->odvp_attrs[i].attr.attr.name);
371 }
372 kfree(objp: priv->odvp_attrs);
373 }
374 kfree(objp: priv->odvp);
375 priv->odvp_count = 0;
376}
377
378static int evaluate_odvp(struct int3400_thermal_priv *priv)
379{
380 struct acpi_buffer odvp = { ACPI_ALLOCATE_BUFFER, NULL };
381 union acpi_object *obj = NULL;
382 acpi_status status;
383 int i, ret;
384
385 status = acpi_evaluate_object(object: priv->adev->handle, pathname: "ODVP", NULL, return_object_buffer: &odvp);
386 if (ACPI_FAILURE(status)) {
387 ret = -EINVAL;
388 goto out_err;
389 }
390
391 obj = odvp.pointer;
392 if (obj->type != ACPI_TYPE_PACKAGE) {
393 ret = -EINVAL;
394 goto out_err;
395 }
396
397 if (priv->odvp == NULL) {
398 priv->odvp_count = obj->package.count;
399 priv->odvp = kmalloc_array(n: priv->odvp_count, size: sizeof(int),
400 GFP_KERNEL);
401 if (!priv->odvp) {
402 ret = -ENOMEM;
403 goto out_err;
404 }
405 }
406
407 if (priv->odvp_attrs == NULL) {
408 priv->odvp_attrs = kcalloc(n: priv->odvp_count,
409 size: sizeof(struct odvp_attr),
410 GFP_KERNEL);
411 if (!priv->odvp_attrs) {
412 ret = -ENOMEM;
413 goto out_err;
414 }
415 for (i = 0; i < priv->odvp_count; i++) {
416 struct odvp_attr *odvp = &priv->odvp_attrs[i];
417
418 sysfs_attr_init(&odvp->attr.attr);
419 odvp->priv = priv;
420 odvp->odvp = i;
421 odvp->attr.attr.name = kasprintf(GFP_KERNEL,
422 fmt: "odvp%d", i);
423
424 if (!odvp->attr.attr.name) {
425 ret = -ENOMEM;
426 goto out_err;
427 }
428 odvp->attr.attr.mode = 0444;
429 odvp->attr.show = odvp_show;
430 odvp->attr.store = NULL;
431 ret = sysfs_create_file(kobj: &priv->pdev->dev.kobj,
432 attr: &odvp->attr.attr);
433 if (ret)
434 goto out_err;
435 }
436 }
437
438 for (i = 0; i < obj->package.count; i++) {
439 if (obj->package.elements[i].type == ACPI_TYPE_INTEGER)
440 priv->odvp[i] = obj->package.elements[i].integer.value;
441 }
442
443 kfree(objp: obj);
444 return 0;
445
446out_err:
447 cleanup_odvp(priv);
448 kfree(objp: obj);
449 return ret;
450}
451
452static void int3400_notify(acpi_handle handle,
453 u32 event,
454 void *data)
455{
456 struct int3400_thermal_priv *priv = data;
457 struct device *dev;
458 char *thermal_prop[5];
459 int therm_event;
460
461 if (!priv)
462 return;
463
464 switch (event) {
465 case INT3400_THERMAL_TABLE_CHANGED:
466 therm_event = THERMAL_TABLE_CHANGED;
467 break;
468 case INT3400_KEEP_ALIVE:
469 therm_event = THERMAL_EVENT_KEEP_ALIVE;
470 break;
471 case INT3400_ODVP_CHANGED:
472 evaluate_odvp(priv);
473 therm_event = THERMAL_DEVICE_POWER_CAPABILITY_CHANGED;
474 break;
475 default:
476 /* Ignore unknown notification codes sent to INT3400 device */
477 return;
478 }
479
480 dev = thermal_zone_device(tzd: priv->thermal);
481
482 thermal_prop[0] = kasprintf(GFP_KERNEL, fmt: "NAME=%s", thermal_zone_device_type(tzd: priv->thermal));
483 thermal_prop[1] = kasprintf(GFP_KERNEL, fmt: "TEMP=%d", INT3400_FAKE_TEMP);
484 thermal_prop[2] = kasprintf(GFP_KERNEL, fmt: "TRIP=");
485 thermal_prop[3] = kasprintf(GFP_KERNEL, fmt: "EVENT=%d", therm_event);
486 thermal_prop[4] = NULL;
487 kobject_uevent_env(kobj: &dev->kobj, action: KOBJ_CHANGE, envp: thermal_prop);
488 kfree(objp: thermal_prop[0]);
489 kfree(objp: thermal_prop[1]);
490 kfree(objp: thermal_prop[2]);
491 kfree(objp: thermal_prop[3]);
492}
493
494static int int3400_thermal_get_temp(struct thermal_zone_device *thermal,
495 int *temp)
496{
497 *temp = INT3400_FAKE_TEMP;
498 return 0;
499}
500
501static int int3400_thermal_change_mode(struct thermal_zone_device *thermal,
502 enum thermal_device_mode mode)
503{
504 struct int3400_thermal_priv *priv = thermal_zone_device_priv(tzd: thermal);
505 int result = 0;
506 int enabled;
507
508 if (!priv)
509 return -EINVAL;
510
511 enabled = mode == THERMAL_DEVICE_ENABLED;
512
513 if (priv->os_uuid_mask) {
514 if (!enabled) {
515 priv->os_uuid_mask = 0;
516 result = set_os_uuid_mask(priv, mask: priv->os_uuid_mask);
517 }
518 goto eval_odvp;
519 }
520
521 if (priv->current_uuid_index < 0 ||
522 priv->current_uuid_index >= INT3400_THERMAL_MAXIMUM_UUID)
523 return -EINVAL;
524
525 result = int3400_thermal_run_osc(handle: priv->adev->handle,
526 uuid_str: int3400_thermal_uuids[priv->current_uuid_index],
527 enable: &enabled);
528eval_odvp:
529 evaluate_odvp(priv);
530
531 return result;
532}
533
534static struct thermal_zone_device_ops int3400_thermal_ops = {
535 .get_temp = int3400_thermal_get_temp,
536 .change_mode = int3400_thermal_change_mode,
537};
538
539static struct thermal_zone_params int3400_thermal_params = {
540 .governor_name = "user_space",
541 .no_hwmon = true,
542};
543
544static void int3400_setup_gddv(struct int3400_thermal_priv *priv)
545{
546 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
547 union acpi_object *obj;
548 acpi_status status;
549
550 status = acpi_evaluate_object(object: priv->adev->handle, pathname: "GDDV", NULL,
551 return_object_buffer: &buffer);
552 if (ACPI_FAILURE(status) || !buffer.length)
553 return;
554
555 obj = buffer.pointer;
556 if (obj->type != ACPI_TYPE_PACKAGE || obj->package.count != 1
557 || obj->package.elements[0].type != ACPI_TYPE_BUFFER)
558 goto out_free;
559
560 priv->data_vault = kmemdup(p: obj->package.elements[0].buffer.pointer,
561 size: obj->package.elements[0].buffer.length,
562 GFP_KERNEL);
563 if (ZERO_OR_NULL_PTR(priv->data_vault))
564 goto out_free;
565
566 bin_attr_data_vault.private = priv->data_vault;
567 bin_attr_data_vault.size = obj->package.elements[0].buffer.length;
568out_free:
569 kfree(objp: buffer.pointer);
570}
571
572static int int3400_thermal_probe(struct platform_device *pdev)
573{
574 struct acpi_device *adev = ACPI_COMPANION(&pdev->dev);
575 struct int3400_thermal_priv *priv;
576 int result;
577
578 if (!adev)
579 return -ENODEV;
580
581 priv = kzalloc(size: sizeof(struct int3400_thermal_priv), GFP_KERNEL);
582 if (!priv)
583 return -ENOMEM;
584
585 priv->pdev = pdev;
586 priv->adev = adev;
587
588 result = int3400_thermal_get_uuids(priv);
589
590 /* Missing IDSP isn't fatal */
591 if (result && result != -ENODEV)
592 goto free_priv;
593
594 priv->current_uuid_index = -1;
595
596 result = acpi_parse_art(handle: priv->adev->handle, art_count: &priv->art_count,
597 arts: &priv->arts, create_dev: true);
598 if (result)
599 dev_dbg(&pdev->dev, "_ART table parsing error\n");
600
601 result = acpi_parse_trt(handle: priv->adev->handle, trt_count: &priv->trt_count,
602 trts: &priv->trts, create_dev: true);
603 if (result)
604 dev_dbg(&pdev->dev, "_TRT table parsing error\n");
605
606 platform_set_drvdata(pdev, data: priv);
607
608 int3400_setup_gddv(priv);
609
610 evaluate_odvp(priv);
611
612 priv->thermal = thermal_tripless_zone_device_register(type: "INT3400 Thermal", devdata: priv,
613 ops: &int3400_thermal_ops,
614 tzp: &int3400_thermal_params);
615 if (IS_ERR(ptr: priv->thermal)) {
616 result = PTR_ERR(ptr: priv->thermal);
617 goto free_art_trt;
618 }
619
620 priv->rel_misc_dev_res = acpi_thermal_rel_misc_device_add(
621 handle: priv->adev->handle);
622
623 result = sysfs_create_group(kobj: &pdev->dev.kobj, grp: &uuid_attribute_group);
624 if (result)
625 goto free_rel_misc;
626
627 if (acpi_has_method(handle: priv->adev->handle, name: "IMOK")) {
628 result = sysfs_create_group(kobj: &pdev->dev.kobj, grp: &imok_attribute_group);
629 if (result)
630 goto free_imok;
631 }
632
633 if (!ZERO_OR_NULL_PTR(priv->data_vault)) {
634 result = sysfs_create_group(kobj: &pdev->dev.kobj,
635 grp: &data_attribute_group);
636 if (result)
637 goto free_uuid;
638 }
639
640 result = acpi_install_notify_handler(
641 device: priv->adev->handle, ACPI_DEVICE_NOTIFY, handler: int3400_notify,
642 context: (void *)priv);
643 if (result)
644 goto free_sysfs;
645
646 result = production_mode_init(priv);
647 if (result)
648 goto free_notify;
649
650 return 0;
651
652free_notify:
653 acpi_remove_notify_handler(device: priv->adev->handle, ACPI_DEVICE_NOTIFY,
654 handler: int3400_notify);
655free_sysfs:
656 cleanup_odvp(priv);
657 if (!ZERO_OR_NULL_PTR(priv->data_vault)) {
658 sysfs_remove_group(kobj: &pdev->dev.kobj, grp: &data_attribute_group);
659 kfree(objp: priv->data_vault);
660 }
661free_uuid:
662 sysfs_remove_group(kobj: &pdev->dev.kobj, grp: &uuid_attribute_group);
663free_imok:
664 sysfs_remove_group(kobj: &pdev->dev.kobj, grp: &imok_attribute_group);
665free_rel_misc:
666 if (!priv->rel_misc_dev_res)
667 acpi_thermal_rel_misc_device_remove(handle: priv->adev->handle);
668 thermal_zone_device_unregister(tz: priv->thermal);
669free_art_trt:
670 kfree(objp: priv->trts);
671 kfree(objp: priv->arts);
672free_priv:
673 kfree(objp: priv);
674 return result;
675}
676
677static void int3400_thermal_remove(struct platform_device *pdev)
678{
679 struct int3400_thermal_priv *priv = platform_get_drvdata(pdev);
680
681 production_mode_exit(priv);
682
683 acpi_remove_notify_handler(
684 device: priv->adev->handle, ACPI_DEVICE_NOTIFY,
685 handler: int3400_notify);
686
687 cleanup_odvp(priv);
688
689 if (!priv->rel_misc_dev_res)
690 acpi_thermal_rel_misc_device_remove(handle: priv->adev->handle);
691
692 if (!ZERO_OR_NULL_PTR(priv->data_vault))
693 sysfs_remove_group(kobj: &pdev->dev.kobj, grp: &data_attribute_group);
694 sysfs_remove_group(kobj: &pdev->dev.kobj, grp: &uuid_attribute_group);
695 sysfs_remove_group(kobj: &pdev->dev.kobj, grp: &imok_attribute_group);
696 thermal_zone_device_unregister(tz: priv->thermal);
697 kfree(objp: priv->data_vault);
698 kfree(objp: priv->trts);
699 kfree(objp: priv->arts);
700 kfree(objp: priv);
701}
702
703static const struct acpi_device_id int3400_thermal_match[] = {
704 {"INT3400", 0},
705 {"INTC1040", 0},
706 {"INTC1041", 0},
707 {"INTC1042", 0},
708 {"INTC10A0", 0},
709 {}
710};
711
712MODULE_DEVICE_TABLE(acpi, int3400_thermal_match);
713
714static struct platform_driver int3400_thermal_driver = {
715 .probe = int3400_thermal_probe,
716 .remove_new = int3400_thermal_remove,
717 .driver = {
718 .name = "int3400 thermal",
719 .acpi_match_table = ACPI_PTR(int3400_thermal_match),
720 },
721};
722
723module_platform_driver(int3400_thermal_driver);
724
725MODULE_DESCRIPTION("INT3400 Thermal driver");
726MODULE_AUTHOR("Zhang Rui <rui.zhang@intel.com>");
727MODULE_LICENSE("GPL");
728

source code of linux/drivers/thermal/intel/int340x_thermal/int3400_thermal.c