1
2
3
4
5
6#include <linux/kernel.h>
7#include <linux/module.h>
8#include <linux/init.h>
9#include <linux/pci.h>
10#include <linux/interrupt.h>
11#include <linux/platform_device.h>
12#include <linux/acpi.h>
13#include <linux/thermal.h>
14#include <linux/cpuhotplug.h>
15#include <linux/intel_rapl.h>
16#include "int340x_thermal_zone.h"
17#include "../intel_soc_dts_iosf.h"
18
19
20#define PCI_DEVICE_ID_PROC_BDW_THERMAL 0x1603
21#define PCI_DEVICE_ID_PROC_HSB_THERMAL 0x0A03
22
23
24#define PCI_DEVICE_ID_PROC_SKL_THERMAL 0x1903
25
26
27#define PCI_DEVICE_ID_PROC_CNL_THERMAL 0x5a03
28#define PCI_DEVICE_ID_PROC_CFL_THERMAL 0x3E83
29
30
31#define PCI_DEVICE_ID_PROC_BSW_THERMAL 0x22DC
32
33
34#define PCI_DEVICE_ID_PROC_BXT0_THERMAL 0x0A8C
35#define PCI_DEVICE_ID_PROC_BXT1_THERMAL 0x1A8C
36#define PCI_DEVICE_ID_PROC_BXTX_THERMAL 0x4A8C
37#define PCI_DEVICE_ID_PROC_BXTP_THERMAL 0x5A8C
38
39
40#define PCI_DEVICE_ID_PROC_GLK_THERMAL 0x318C
41
42#define DRV_NAME "proc_thermal"
43
44struct power_config {
45 u32 index;
46 u32 min_uw;
47 u32 max_uw;
48 u32 tmin_us;
49 u32 tmax_us;
50 u32 step_uw;
51};
52
53struct proc_thermal_device {
54 struct device *dev;
55 struct acpi_device *adev;
56 struct power_config power_limits[2];
57 struct int34x_thermal_zone *int340x_zone;
58 struct intel_soc_dts_sensors *soc_dts;
59 void __iomem *mmio_base;
60};
61
62enum proc_thermal_emum_mode_type {
63 PROC_THERMAL_NONE,
64 PROC_THERMAL_PCI,
65 PROC_THERMAL_PLATFORM_DEV
66};
67
68struct rapl_mmio_regs {
69 u64 reg_unit;
70 u64 regs[RAPL_DOMAIN_MAX][RAPL_DOMAIN_REG_MAX];
71 int limits[RAPL_DOMAIN_MAX];
72};
73
74
75
76
77
78static enum proc_thermal_emum_mode_type proc_thermal_emum_mode =
79 PROC_THERMAL_NONE;
80
81#define POWER_LIMIT_SHOW(index, suffix) \
82static ssize_t power_limit_##index##_##suffix##_show(struct device *dev, \
83 struct device_attribute *attr, \
84 char *buf) \
85{ \
86 struct proc_thermal_device *proc_dev = dev_get_drvdata(dev); \
87 \
88 if (proc_thermal_emum_mode == PROC_THERMAL_NONE) { \
89 dev_warn(dev, "Attempted to get power limit before device was initialized!\n"); \
90 return 0; \
91 } \
92 \
93 return sprintf(buf, "%lu\n",\
94 (unsigned long)proc_dev->power_limits[index].suffix * 1000); \
95}
96
97POWER_LIMIT_SHOW(0, min_uw)
98POWER_LIMIT_SHOW(0, max_uw)
99POWER_LIMIT_SHOW(0, step_uw)
100POWER_LIMIT_SHOW(0, tmin_us)
101POWER_LIMIT_SHOW(0, tmax_us)
102
103POWER_LIMIT_SHOW(1, min_uw)
104POWER_LIMIT_SHOW(1, max_uw)
105POWER_LIMIT_SHOW(1, step_uw)
106POWER_LIMIT_SHOW(1, tmin_us)
107POWER_LIMIT_SHOW(1, tmax_us)
108
109static DEVICE_ATTR_RO(power_limit_0_min_uw);
110static DEVICE_ATTR_RO(power_limit_0_max_uw);
111static DEVICE_ATTR_RO(power_limit_0_step_uw);
112static DEVICE_ATTR_RO(power_limit_0_tmin_us);
113static DEVICE_ATTR_RO(power_limit_0_tmax_us);
114
115static DEVICE_ATTR_RO(power_limit_1_min_uw);
116static DEVICE_ATTR_RO(power_limit_1_max_uw);
117static DEVICE_ATTR_RO(power_limit_1_step_uw);
118static DEVICE_ATTR_RO(power_limit_1_tmin_us);
119static DEVICE_ATTR_RO(power_limit_1_tmax_us);
120
121static struct attribute *power_limit_attrs[] = {
122 &dev_attr_power_limit_0_min_uw.attr,
123 &dev_attr_power_limit_1_min_uw.attr,
124 &dev_attr_power_limit_0_max_uw.attr,
125 &dev_attr_power_limit_1_max_uw.attr,
126 &dev_attr_power_limit_0_step_uw.attr,
127 &dev_attr_power_limit_1_step_uw.attr,
128 &dev_attr_power_limit_0_tmin_us.attr,
129 &dev_attr_power_limit_1_tmin_us.attr,
130 &dev_attr_power_limit_0_tmax_us.attr,
131 &dev_attr_power_limit_1_tmax_us.attr,
132 NULL
133};
134
135static const struct attribute_group power_limit_attribute_group = {
136 .attrs = power_limit_attrs,
137 .name = "power_limits"
138};
139
140static int stored_tjmax;
141
142static int get_tjmax(void)
143{
144 u32 eax, edx;
145 u32 val;
146 int err;
147
148 err = rdmsr_safe(MSR_IA32_TEMPERATURE_TARGET, &eax, &edx);
149 if (err)
150 return err;
151
152 val = (eax >> 16) & 0xff;
153 if (val)
154 return val;
155
156 return -EINVAL;
157}
158
159static int read_temp_msr(int *temp)
160{
161 int cpu;
162 u32 eax, edx;
163 int err;
164 unsigned long curr_temp_off = 0;
165
166 *temp = 0;
167
168 for_each_online_cpu(cpu) {
169 err = rdmsr_safe_on_cpu(cpu, MSR_IA32_THERM_STATUS, &eax,
170 &edx);
171 if (err)
172 goto err_ret;
173 else {
174 if (eax & 0x80000000) {
175 curr_temp_off = (eax >> 16) & 0x7f;
176 if (!*temp || curr_temp_off < *temp)
177 *temp = curr_temp_off;
178 } else {
179 err = -EINVAL;
180 goto err_ret;
181 }
182 }
183 }
184
185 return 0;
186err_ret:
187 return err;
188}
189
190static int proc_thermal_get_zone_temp(struct thermal_zone_device *zone,
191 int *temp)
192{
193 int ret;
194
195 ret = read_temp_msr(temp);
196 if (!ret)
197 *temp = (stored_tjmax - *temp) * 1000;
198
199 return ret;
200}
201
202static struct thermal_zone_device_ops proc_thermal_local_ops = {
203 .get_temp = proc_thermal_get_zone_temp,
204};
205
206static int proc_thermal_read_ppcc(struct proc_thermal_device *proc_priv)
207{
208 int i;
209 acpi_status status;
210 struct acpi_buffer buf = { ACPI_ALLOCATE_BUFFER, NULL };
211 union acpi_object *elements, *ppcc;
212 union acpi_object *p;
213 int ret = 0;
214
215 status = acpi_evaluate_object(proc_priv->adev->handle, "PPCC",
216 NULL, &buf);
217 if (ACPI_FAILURE(status))
218 return -ENODEV;
219
220 p = buf.pointer;
221 if (!p || (p->type != ACPI_TYPE_PACKAGE)) {
222 dev_err(proc_priv->dev, "Invalid PPCC data\n");
223 ret = -EFAULT;
224 goto free_buffer;
225 }
226
227 if (!p->package.count) {
228 dev_err(proc_priv->dev, "Invalid PPCC package size\n");
229 ret = -EFAULT;
230 goto free_buffer;
231 }
232
233 for (i = 0; i < min((int)p->package.count - 1, 2); ++i) {
234 elements = &(p->package.elements[i+1]);
235 if (elements->type != ACPI_TYPE_PACKAGE ||
236 elements->package.count != 6) {
237 ret = -EFAULT;
238 goto free_buffer;
239 }
240 ppcc = elements->package.elements;
241 proc_priv->power_limits[i].index = ppcc[0].integer.value;
242 proc_priv->power_limits[i].min_uw = ppcc[1].integer.value;
243 proc_priv->power_limits[i].max_uw = ppcc[2].integer.value;
244 proc_priv->power_limits[i].tmin_us = ppcc[3].integer.value;
245 proc_priv->power_limits[i].tmax_us = ppcc[4].integer.value;
246 proc_priv->power_limits[i].step_uw = ppcc[5].integer.value;
247 }
248
249free_buffer:
250 kfree(buf.pointer);
251
252 return ret;
253}
254
255#define PROC_POWER_CAPABILITY_CHANGED 0x83
256static void proc_thermal_notify(acpi_handle handle, u32 event, void *data)
257{
258 struct proc_thermal_device *proc_priv = data;
259
260 if (!proc_priv)
261 return;
262
263 switch (event) {
264 case PROC_POWER_CAPABILITY_CHANGED:
265 proc_thermal_read_ppcc(proc_priv);
266 int340x_thermal_zone_device_update(proc_priv->int340x_zone,
267 THERMAL_DEVICE_POWER_CAPABILITY_CHANGED);
268 break;
269 default:
270 dev_dbg(proc_priv->dev, "Unsupported event [0x%x]\n", event);
271 break;
272 }
273}
274
275
276static int proc_thermal_add(struct device *dev,
277 struct proc_thermal_device **priv)
278{
279 struct proc_thermal_device *proc_priv;
280 struct acpi_device *adev;
281 acpi_status status;
282 unsigned long long tmp;
283 struct thermal_zone_device_ops *ops = NULL;
284 int ret;
285
286 adev = ACPI_COMPANION(dev);
287 if (!adev)
288 return -ENODEV;
289
290 proc_priv = devm_kzalloc(dev, sizeof(*proc_priv), GFP_KERNEL);
291 if (!proc_priv)
292 return -ENOMEM;
293
294 proc_priv->dev = dev;
295 proc_priv->adev = adev;
296 *priv = proc_priv;
297
298 ret = proc_thermal_read_ppcc(proc_priv);
299 if (ret)
300 return ret;
301
302 status = acpi_evaluate_integer(adev->handle, "_TMP", NULL, &tmp);
303 if (ACPI_FAILURE(status)) {
304
305 stored_tjmax = get_tjmax();
306 if (stored_tjmax > 0)
307 ops = &proc_thermal_local_ops;
308 }
309
310 proc_priv->int340x_zone = int340x_thermal_zone_add(adev, ops);
311 if (IS_ERR(proc_priv->int340x_zone)) {
312 return PTR_ERR(proc_priv->int340x_zone);
313 } else
314 ret = 0;
315
316 ret = acpi_install_notify_handler(adev->handle, ACPI_DEVICE_NOTIFY,
317 proc_thermal_notify,
318 (void *)proc_priv);
319 if (ret)
320 goto remove_zone;
321
322 return 0;
323
324remove_zone:
325 int340x_thermal_zone_remove(proc_priv->int340x_zone);
326
327 return ret;
328}
329
330static void proc_thermal_remove(struct proc_thermal_device *proc_priv)
331{
332 acpi_remove_notify_handler(proc_priv->adev->handle,
333 ACPI_DEVICE_NOTIFY, proc_thermal_notify);
334 int340x_thermal_zone_remove(proc_priv->int340x_zone);
335 sysfs_remove_group(&proc_priv->dev->kobj,
336 &power_limit_attribute_group);
337}
338
339static int int3401_add(struct platform_device *pdev)
340{
341 struct proc_thermal_device *proc_priv;
342 int ret;
343
344 if (proc_thermal_emum_mode == PROC_THERMAL_PCI) {
345 dev_err(&pdev->dev, "error: enumerated as PCI dev\n");
346 return -ENODEV;
347 }
348
349 ret = proc_thermal_add(&pdev->dev, &proc_priv);
350 if (ret)
351 return ret;
352
353 platform_set_drvdata(pdev, proc_priv);
354 proc_thermal_emum_mode = PROC_THERMAL_PLATFORM_DEV;
355
356 dev_info(&pdev->dev, "Creating sysfs group for PROC_THERMAL_PLATFORM_DEV\n");
357
358 return sysfs_create_group(&pdev->dev.kobj,
359 &power_limit_attribute_group);
360}
361
362static int int3401_remove(struct platform_device *pdev)
363{
364 proc_thermal_remove(platform_get_drvdata(pdev));
365
366 return 0;
367}
368
369static irqreturn_t proc_thermal_pci_msi_irq(int irq, void *devid)
370{
371 struct proc_thermal_device *proc_priv;
372 struct pci_dev *pdev = devid;
373
374 proc_priv = pci_get_drvdata(pdev);
375
376 intel_soc_dts_iosf_interrupt_handler(proc_priv->soc_dts);
377
378 return IRQ_HANDLED;
379}
380
381#ifdef CONFIG_PROC_THERMAL_MMIO_RAPL
382
383#define MCHBAR 0
384
385
386static struct rapl_if_priv rapl_mmio_priv;
387
388static int rapl_mmio_cpu_online(unsigned int cpu)
389{
390 struct rapl_package *rp;
391
392
393 if (topology_physical_package_id(cpu))
394 return 0;
395
396 rp = rapl_find_package_domain(cpu, &rapl_mmio_priv);
397 if (!rp) {
398 rp = rapl_add_package(cpu, &rapl_mmio_priv);
399 if (IS_ERR(rp))
400 return PTR_ERR(rp);
401 }
402 cpumask_set_cpu(cpu, &rp->cpumask);
403 return 0;
404}
405
406static int rapl_mmio_cpu_down_prep(unsigned int cpu)
407{
408 struct rapl_package *rp;
409 int lead_cpu;
410
411 rp = rapl_find_package_domain(cpu, &rapl_mmio_priv);
412 if (!rp)
413 return 0;
414
415 cpumask_clear_cpu(cpu, &rp->cpumask);
416 lead_cpu = cpumask_first(&rp->cpumask);
417 if (lead_cpu >= nr_cpu_ids)
418 rapl_remove_package(rp);
419 else if (rp->lead_cpu == cpu)
420 rp->lead_cpu = lead_cpu;
421 return 0;
422}
423
424static int rapl_mmio_read_raw(int cpu, struct reg_action *ra)
425{
426 if (!ra->reg)
427 return -EINVAL;
428
429 ra->value = readq((void __iomem *)ra->reg);
430 ra->value &= ra->mask;
431 return 0;
432}
433
434static int rapl_mmio_write_raw(int cpu, struct reg_action *ra)
435{
436 u64 val;
437
438 if (!ra->reg)
439 return -EINVAL;
440
441 val = readq((void __iomem *)ra->reg);
442 val &= ~ra->mask;
443 val |= ra->value;
444 writeq(val, (void __iomem *)ra->reg);
445 return 0;
446}
447
448static int proc_thermal_rapl_add(struct pci_dev *pdev,
449 struct proc_thermal_device *proc_priv,
450 struct rapl_mmio_regs *rapl_regs)
451{
452 enum rapl_domain_reg_id reg;
453 enum rapl_domain_type domain;
454 int ret;
455
456 if (!rapl_regs)
457 return 0;
458
459 ret = pcim_iomap_regions(pdev, 1 << MCHBAR, DRV_NAME);
460 if (ret) {
461 dev_err(&pdev->dev, "cannot reserve PCI memory region\n");
462 return -ENOMEM;
463 }
464
465 proc_priv->mmio_base = pcim_iomap_table(pdev)[MCHBAR];
466
467 for (domain = RAPL_DOMAIN_PACKAGE; domain < RAPL_DOMAIN_MAX; domain++) {
468 for (reg = RAPL_DOMAIN_REG_LIMIT; reg < RAPL_DOMAIN_REG_MAX; reg++)
469 if (rapl_regs->regs[domain][reg])
470 rapl_mmio_priv.regs[domain][reg] =
471 (u64)proc_priv->mmio_base +
472 rapl_regs->regs[domain][reg];
473 rapl_mmio_priv.limits[domain] = rapl_regs->limits[domain];
474 }
475 rapl_mmio_priv.reg_unit = (u64)proc_priv->mmio_base + rapl_regs->reg_unit;
476
477 rapl_mmio_priv.read_raw = rapl_mmio_read_raw;
478 rapl_mmio_priv.write_raw = rapl_mmio_write_raw;
479
480 rapl_mmio_priv.control_type = powercap_register_control_type(NULL, "intel-rapl-mmio", NULL);
481 if (IS_ERR(rapl_mmio_priv.control_type)) {
482 pr_debug("failed to register powercap control_type.\n");
483 return PTR_ERR(rapl_mmio_priv.control_type);
484 }
485
486 ret = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "powercap/rapl:online",
487 rapl_mmio_cpu_online, rapl_mmio_cpu_down_prep);
488 if (ret < 0) {
489 powercap_unregister_control_type(rapl_mmio_priv.control_type);
490 rapl_mmio_priv.control_type = NULL;
491 return ret;
492 }
493 rapl_mmio_priv.pcap_rapl_online = ret;
494
495 return 0;
496}
497
498static void proc_thermal_rapl_remove(void)
499{
500 if (IS_ERR_OR_NULL(rapl_mmio_priv.control_type))
501 return;
502
503 cpuhp_remove_state(rapl_mmio_priv.pcap_rapl_online);
504 powercap_unregister_control_type(rapl_mmio_priv.control_type);
505}
506
507static const struct rapl_mmio_regs rapl_mmio_hsw = {
508 .reg_unit = 0x5938,
509 .regs[RAPL_DOMAIN_PACKAGE] = { 0x59a0, 0x593c, 0x58f0, 0, 0x5930},
510 .regs[RAPL_DOMAIN_DRAM] = { 0x58e0, 0x58e8, 0x58ec, 0, 0},
511 .limits[RAPL_DOMAIN_PACKAGE] = 2,
512 .limits[RAPL_DOMAIN_DRAM] = 2,
513};
514
515#else
516
517static int proc_thermal_rapl_add(struct pci_dev *pdev,
518 struct proc_thermal_device *proc_priv,
519 struct rapl_mmio_regs *rapl_regs)
520{
521 return 0;
522}
523static void proc_thermal_rapl_remove(void) {}
524static const struct rapl_mmio_regs rapl_mmio_hsw;
525
526#endif
527
528static int proc_thermal_pci_probe(struct pci_dev *pdev,
529 const struct pci_device_id *id)
530{
531 struct proc_thermal_device *proc_priv;
532 int ret;
533
534 if (proc_thermal_emum_mode == PROC_THERMAL_PLATFORM_DEV) {
535 dev_err(&pdev->dev, "error: enumerated as platform dev\n");
536 return -ENODEV;
537 }
538
539 ret = pcim_enable_device(pdev);
540 if (ret < 0) {
541 dev_err(&pdev->dev, "error: could not enable device\n");
542 return ret;
543 }
544
545 ret = proc_thermal_add(&pdev->dev, &proc_priv);
546 if (ret)
547 return ret;
548
549 ret = proc_thermal_rapl_add(pdev, proc_priv,
550 (struct rapl_mmio_regs *)id->driver_data);
551 if (ret) {
552 dev_err(&pdev->dev, "failed to add RAPL MMIO interface\n");
553 proc_thermal_remove(proc_priv);
554 return ret;
555 }
556
557 pci_set_drvdata(pdev, proc_priv);
558 proc_thermal_emum_mode = PROC_THERMAL_PCI;
559
560 if (pdev->device == PCI_DEVICE_ID_PROC_BSW_THERMAL) {
561
562
563
564
565
566
567
568 proc_priv->soc_dts = intel_soc_dts_iosf_init(
569 INTEL_SOC_DTS_INTERRUPT_MSI, 2, 0);
570
571 if (!IS_ERR(proc_priv->soc_dts) && pdev->irq) {
572 ret = pci_enable_msi(pdev);
573 if (!ret) {
574 ret = request_threaded_irq(pdev->irq, NULL,
575 proc_thermal_pci_msi_irq,
576 IRQF_ONESHOT, "proc_thermal",
577 pdev);
578 if (ret) {
579 intel_soc_dts_iosf_exit(
580 proc_priv->soc_dts);
581 pci_disable_msi(pdev);
582 proc_priv->soc_dts = NULL;
583 }
584 }
585 } else
586 dev_err(&pdev->dev, "No auxiliary DTSs enabled\n");
587 }
588
589 dev_info(&pdev->dev, "Creating sysfs group for PROC_THERMAL_PCI\n");
590
591 return sysfs_create_group(&pdev->dev.kobj,
592 &power_limit_attribute_group);
593}
594
595static void proc_thermal_pci_remove(struct pci_dev *pdev)
596{
597 struct proc_thermal_device *proc_priv = pci_get_drvdata(pdev);
598
599 if (proc_priv->soc_dts) {
600 intel_soc_dts_iosf_exit(proc_priv->soc_dts);
601 if (pdev->irq) {
602 free_irq(pdev->irq, pdev);
603 pci_disable_msi(pdev);
604 }
605 }
606 proc_thermal_rapl_remove();
607 proc_thermal_remove(proc_priv);
608}
609
610#ifdef CONFIG_PM_SLEEP
611static int proc_thermal_resume(struct device *dev)
612{
613 struct proc_thermal_device *proc_dev;
614
615 proc_dev = dev_get_drvdata(dev);
616 proc_thermal_read_ppcc(proc_dev);
617
618 return 0;
619}
620#else
621#define proc_thermal_resume NULL
622#endif
623
624static SIMPLE_DEV_PM_OPS(proc_thermal_pm, NULL, proc_thermal_resume);
625
626static const struct pci_device_id proc_thermal_pci_ids[] = {
627 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_PROC_BDW_THERMAL)},
628 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_PROC_HSB_THERMAL)},
629 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_PROC_SKL_THERMAL),
630 .driver_data = (kernel_ulong_t)&rapl_mmio_hsw, },
631 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_PROC_BSW_THERMAL)},
632 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_PROC_BXT0_THERMAL)},
633 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_PROC_BXT1_THERMAL)},
634 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_PROC_BXTX_THERMAL)},
635 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_PROC_BXTP_THERMAL)},
636 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_PROC_CNL_THERMAL)},
637 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_PROC_CFL_THERMAL)},
638 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_PROC_GLK_THERMAL)},
639 { 0, },
640};
641
642MODULE_DEVICE_TABLE(pci, proc_thermal_pci_ids);
643
644static struct pci_driver proc_thermal_pci_driver = {
645 .name = DRV_NAME,
646 .probe = proc_thermal_pci_probe,
647 .remove = proc_thermal_pci_remove,
648 .id_table = proc_thermal_pci_ids,
649 .driver.pm = &proc_thermal_pm,
650};
651
652static const struct acpi_device_id int3401_device_ids[] = {
653 {"INT3401", 0},
654 {"", 0},
655};
656MODULE_DEVICE_TABLE(acpi, int3401_device_ids);
657
658static struct platform_driver int3401_driver = {
659 .probe = int3401_add,
660 .remove = int3401_remove,
661 .driver = {
662 .name = "int3401 thermal",
663 .acpi_match_table = int3401_device_ids,
664 .pm = &proc_thermal_pm,
665 },
666};
667
668static int __init proc_thermal_init(void)
669{
670 int ret;
671
672 ret = platform_driver_register(&int3401_driver);
673 if (ret)
674 return ret;
675
676 ret = pci_register_driver(&proc_thermal_pci_driver);
677
678 return ret;
679}
680
681static void __exit proc_thermal_exit(void)
682{
683 platform_driver_unregister(&int3401_driver);
684 pci_unregister_driver(&proc_thermal_pci_driver);
685}
686
687module_init(proc_thermal_init);
688module_exit(proc_thermal_exit);
689
690MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>");
691MODULE_DESCRIPTION("Processor Thermal Reporting Device Driver");
692MODULE_LICENSE("GPL v2");
693
