1 /*
2  * HiSilicon thermal sensor driver
3  *
4  * Copyright (c) 2014-2015 HiSilicon Limited.
5  * Copyright (c) 2014-2015 Linaro Limited.
6  *
7  * Xinwei Kong <kong.kongxinwei@hisilicon.com>
8  * Leo Yan <leo.yan@linaro.org>
9  *
10  * This program is free software; you can redistribute it and/or modify
11  * it under the terms of the GNU General Public License version 2 as
12  * published by the Free Software Foundation.
13  *
14  * This program is distributed "as is" WITHOUT ANY WARRANTY of any
15  * kind, whether express or implied; without even the implied warranty
16  * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17  * GNU General Public License for more details.
18  */
19 
20 #include <linux/cpufreq.h>
21 #include <linux/delay.h>
22 #include <linux/interrupt.h>
23 #include <linux/module.h>
24 #include <linux/platform_device.h>
25 #include <linux/io.h>
26 #include <linux/of_device.h>
27 
28 #include "thermal_core.h"
29 
30 #define HI6220_TEMP0_LAG			(0x0)
31 #define HI6220_TEMP0_TH				(0x4)
32 #define HI6220_TEMP0_RST_TH			(0x8)
33 #define HI6220_TEMP0_CFG			(0xC)
34 #define HI6220_TEMP0_CFG_SS_MSK			(0xF000)
35 #define HI6220_TEMP0_CFG_HDAK_MSK		(0x30)
36 #define HI6220_TEMP0_EN				(0x10)
37 #define HI6220_TEMP0_INT_EN			(0x14)
38 #define HI6220_TEMP0_INT_CLR			(0x18)
39 #define HI6220_TEMP0_RST_MSK			(0x1C)
40 #define HI6220_TEMP0_VALUE			(0x28)
41 
42 #define HI3660_OFFSET(chan)		((chan) * 0x40)
43 #define HI3660_TEMP(chan)		(HI3660_OFFSET(chan) + 0x1C)
44 #define HI3660_TH(chan)			(HI3660_OFFSET(chan) + 0x20)
45 #define HI3660_LAG(chan)		(HI3660_OFFSET(chan) + 0x28)
46 #define HI3660_INT_EN(chan)		(HI3660_OFFSET(chan) + 0x2C)
47 #define HI3660_INT_CLR(chan)		(HI3660_OFFSET(chan) + 0x30)
48 
49 #define HI6220_TEMP_BASE			(-60000)
50 #define HI6220_TEMP_RESET			(100000)
51 #define HI6220_TEMP_STEP			(785)
52 #define HI6220_TEMP_LAG				(3500)
53 
54 #define HI3660_TEMP_BASE		(-63780)
55 #define HI3660_TEMP_STEP		(205)
56 #define HI3660_TEMP_LAG			(4000)
57 
58 #define HI6220_CLUSTER0_SENSOR		2
59 #define HI6220_CLUSTER1_SENSOR		1
60 
61 #define HI3660_LITTLE_SENSOR		0
62 #define HI3660_BIG_SENSOR		1
63 #define HI3660_G3D_SENSOR		2
64 #define HI3660_MODEM_SENSOR		3
65 
66 struct hisi_thermal_data;
67 
68 struct hisi_thermal_sensor {
69 	struct hisi_thermal_data *data;
70 	struct thermal_zone_device *tzd;
71 	const char *irq_name;
72 	uint32_t id;
73 	uint32_t thres_temp;
74 };
75 
76 struct hisi_thermal_ops {
77 	int (*get_temp)(struct hisi_thermal_sensor *sensor);
78 	int (*enable_sensor)(struct hisi_thermal_sensor *sensor);
79 	int (*disable_sensor)(struct hisi_thermal_sensor *sensor);
80 	int (*irq_handler)(struct hisi_thermal_sensor *sensor);
81 	int (*probe)(struct hisi_thermal_data *data);
82 };
83 
84 struct hisi_thermal_data {
85 	const struct hisi_thermal_ops *ops;
86 	struct hisi_thermal_sensor *sensor;
87 	struct platform_device *pdev;
88 	struct clk *clk;
89 	void __iomem *regs;
90 	int nr_sensors;
91 };
92 
93 /*
94  * The temperature computation on the tsensor is as follow:
95  *	Unit: millidegree Celsius
96  *	Step: 200/255 (0.7843)
97  *	Temperature base: -60°C
98  *
99  * The register is programmed in temperature steps, every step is 785
100  * millidegree and begins at -60 000 m°C
101  *
102  * The temperature from the steps:
103  *
104  *	Temp = TempBase + (steps x 785)
105  *
106  * and the steps from the temperature:
107  *
108  *	steps = (Temp - TempBase) / 785
109  *
110  */
111 static inline int hi6220_thermal_step_to_temp(int step)
112 {
113 	return HI6220_TEMP_BASE + (step * HI6220_TEMP_STEP);
114 }
115 
116 static inline int hi6220_thermal_temp_to_step(int temp)
117 {
118 	return DIV_ROUND_UP(temp - HI6220_TEMP_BASE, HI6220_TEMP_STEP);
119 }
120 
121 /*
122  * for Hi3660,
123  *	Step: 189/922 (0.205)
124  *	Temperature base: -63.780°C
125  *
126  * The register is programmed in temperature steps, every step is 205
127  * millidegree and begins at -63 780 m°C
128  */
129 static inline int hi3660_thermal_step_to_temp(int step)
130 {
131 	return HI3660_TEMP_BASE + step * HI3660_TEMP_STEP;
132 }
133 
134 static inline int hi3660_thermal_temp_to_step(int temp)
135 {
136 	return DIV_ROUND_UP(temp - HI3660_TEMP_BASE, HI3660_TEMP_STEP);
137 }
138 
139 /*
140  * The lag register contains 5 bits encoding the temperature in steps.
141  *
142  * Each time the temperature crosses the threshold boundary, an
143  * interrupt is raised. It could be when the temperature is going
144  * above the threshold or below. However, if the temperature is
145  * fluctuating around this value due to the load, we can receive
146  * several interrupts which may not desired.
147  *
148  * We can setup a temperature representing the delta between the
149  * threshold and the current temperature when the temperature is
150  * decreasing.
151  *
152  * For instance: the lag register is 5°C, the threshold is 65°C, when
153  * the temperature reaches 65°C an interrupt is raised and when the
154  * temperature decrease to 65°C - 5°C another interrupt is raised.
155  *
156  * A very short lag can lead to an interrupt storm, a long lag
157  * increase the latency to react to the temperature changes.  In our
158  * case, that is not really a problem as we are polling the
159  * temperature.
160  *
161  * [0:4] : lag register
162  *
163  * The temperature is coded in steps, cf. HI6220_TEMP_STEP.
164  *
165  * Min : 0x00 :  0.0 °C
166  * Max : 0x1F : 24.3 °C
167  *
168  * The 'value' parameter is in milliCelsius.
169  */
170 static inline void hi6220_thermal_set_lag(void __iomem *addr, int value)
171 {
172 	writel(DIV_ROUND_UP(value, HI6220_TEMP_STEP) & 0x1F,
173 			addr + HI6220_TEMP0_LAG);
174 }
175 
176 static inline void hi6220_thermal_alarm_clear(void __iomem *addr, int value)
177 {
178 	writel(value, addr + HI6220_TEMP0_INT_CLR);
179 }
180 
181 static inline void hi6220_thermal_alarm_enable(void __iomem *addr, int value)
182 {
183 	writel(value, addr + HI6220_TEMP0_INT_EN);
184 }
185 
186 static inline void hi6220_thermal_alarm_set(void __iomem *addr, int temp)
187 {
188 	writel(hi6220_thermal_temp_to_step(temp) | 0x0FFFFFF00,
189 	       addr + HI6220_TEMP0_TH);
190 }
191 
192 static inline void hi6220_thermal_reset_set(void __iomem *addr, int temp)
193 {
194 	writel(hi6220_thermal_temp_to_step(temp), addr + HI6220_TEMP0_RST_TH);
195 }
196 
197 static inline void hi6220_thermal_reset_enable(void __iomem *addr, int value)
198 {
199 	writel(value, addr + HI6220_TEMP0_RST_MSK);
200 }
201 
202 static inline void hi6220_thermal_enable(void __iomem *addr, int value)
203 {
204 	writel(value, addr + HI6220_TEMP0_EN);
205 }
206 
207 static inline int hi6220_thermal_get_temperature(void __iomem *addr)
208 {
209 	return hi6220_thermal_step_to_temp(readl(addr + HI6220_TEMP0_VALUE));
210 }
211 
212 /*
213  * [0:6] lag register
214  *
215  * The temperature is coded in steps, cf. HI3660_TEMP_STEP.
216  *
217  * Min : 0x00 :  0.0 °C
218  * Max : 0x7F : 26.0 °C
219  *
220  */
221 static inline void hi3660_thermal_set_lag(void __iomem *addr,
222 					  int id, int value)
223 {
224 	writel(DIV_ROUND_UP(value, HI3660_TEMP_STEP) & 0x7F,
225 			addr + HI3660_LAG(id));
226 }
227 
228 static inline void hi3660_thermal_alarm_clear(void __iomem *addr,
229 					      int id, int value)
230 {
231 	writel(value, addr + HI3660_INT_CLR(id));
232 }
233 
234 static inline void hi3660_thermal_alarm_enable(void __iomem *addr,
235 					       int id, int value)
236 {
237 	writel(value, addr + HI3660_INT_EN(id));
238 }
239 
240 static inline void hi3660_thermal_alarm_set(void __iomem *addr,
241 					    int id, int value)
242 {
243 	writel(value, addr + HI3660_TH(id));
244 }
245 
246 static inline int hi3660_thermal_get_temperature(void __iomem *addr, int id)
247 {
248 	return hi3660_thermal_step_to_temp(readl(addr + HI3660_TEMP(id)));
249 }
250 
251 /*
252  * Temperature configuration register - Sensor selection
253  *
254  * Bits [19:12]
255  *
256  * 0x0: local sensor (default)
257  * 0x1: remote sensor 1 (ACPU cluster 1)
258  * 0x2: remote sensor 2 (ACPU cluster 0)
259  * 0x3: remote sensor 3 (G3D)
260  */
261 static inline void hi6220_thermal_sensor_select(void __iomem *addr, int sensor)
262 {
263 	writel((readl(addr + HI6220_TEMP0_CFG) & ~HI6220_TEMP0_CFG_SS_MSK) |
264 	       (sensor << 12), addr + HI6220_TEMP0_CFG);
265 }
266 
267 /*
268  * Temperature configuration register - Hdak conversion polling interval
269  *
270  * Bits [5:4]
271  *
272  * 0x0 :   0.768 ms
273  * 0x1 :   6.144 ms
274  * 0x2 :  49.152 ms
275  * 0x3 : 393.216 ms
276  */
277 static inline void hi6220_thermal_hdak_set(void __iomem *addr, int value)
278 {
279 	writel((readl(addr + HI6220_TEMP0_CFG) & ~HI6220_TEMP0_CFG_HDAK_MSK) |
280 	       (value << 4), addr + HI6220_TEMP0_CFG);
281 }
282 
283 static int hi6220_thermal_irq_handler(struct hisi_thermal_sensor *sensor)
284 {
285 	struct hisi_thermal_data *data = sensor->data;
286 
287 	hi6220_thermal_alarm_clear(data->regs, 1);
288 	return 0;
289 }
290 
291 static int hi3660_thermal_irq_handler(struct hisi_thermal_sensor *sensor)
292 {
293 	struct hisi_thermal_data *data = sensor->data;
294 
295 	hi3660_thermal_alarm_clear(data->regs, sensor->id, 1);
296 	return 0;
297 }
298 
299 static int hi6220_thermal_get_temp(struct hisi_thermal_sensor *sensor)
300 {
301 	struct hisi_thermal_data *data = sensor->data;
302 
303 	return hi6220_thermal_get_temperature(data->regs);
304 }
305 
306 static int hi3660_thermal_get_temp(struct hisi_thermal_sensor *sensor)
307 {
308 	struct hisi_thermal_data *data = sensor->data;
309 
310 	return hi3660_thermal_get_temperature(data->regs, sensor->id);
311 }
312 
313 static int hi6220_thermal_disable_sensor(struct hisi_thermal_sensor *sensor)
314 {
315 	struct hisi_thermal_data *data = sensor->data;
316 
317 	/* disable sensor module */
318 	hi6220_thermal_enable(data->regs, 0);
319 	hi6220_thermal_alarm_enable(data->regs, 0);
320 	hi6220_thermal_reset_enable(data->regs, 0);
321 
322 	clk_disable_unprepare(data->clk);
323 
324 	return 0;
325 }
326 
327 static int hi3660_thermal_disable_sensor(struct hisi_thermal_sensor *sensor)
328 {
329 	struct hisi_thermal_data *data = sensor->data;
330 
331 	/* disable sensor module */
332 	hi3660_thermal_alarm_enable(data->regs, sensor->id, 0);
333 	return 0;
334 }
335 
336 static int hi6220_thermal_enable_sensor(struct hisi_thermal_sensor *sensor)
337 {
338 	struct hisi_thermal_data *data = sensor->data;
339 	int ret;
340 
341 	/* enable clock for tsensor */
342 	ret = clk_prepare_enable(data->clk);
343 	if (ret)
344 		return ret;
345 
346 	/* disable module firstly */
347 	hi6220_thermal_reset_enable(data->regs, 0);
348 	hi6220_thermal_enable(data->regs, 0);
349 
350 	/* select sensor id */
351 	hi6220_thermal_sensor_select(data->regs, sensor->id);
352 
353 	/* setting the hdak time */
354 	hi6220_thermal_hdak_set(data->regs, 0);
355 
356 	/* setting lag value between current temp and the threshold */
357 	hi6220_thermal_set_lag(data->regs, HI6220_TEMP_LAG);
358 
359 	/* enable for interrupt */
360 	hi6220_thermal_alarm_set(data->regs, sensor->thres_temp);
361 
362 	hi6220_thermal_reset_set(data->regs, HI6220_TEMP_RESET);
363 
364 	/* enable module */
365 	hi6220_thermal_reset_enable(data->regs, 1);
366 	hi6220_thermal_enable(data->regs, 1);
367 
368 	hi6220_thermal_alarm_clear(data->regs, 0);
369 	hi6220_thermal_alarm_enable(data->regs, 1);
370 
371 	return 0;
372 }
373 
374 static int hi3660_thermal_enable_sensor(struct hisi_thermal_sensor *sensor)
375 {
376 	unsigned int value;
377 	struct hisi_thermal_data *data = sensor->data;
378 
379 	/* disable interrupt */
380 	hi3660_thermal_alarm_enable(data->regs, sensor->id, 0);
381 
382 	/* setting lag value between current temp and the threshold */
383 	hi3660_thermal_set_lag(data->regs, sensor->id, HI3660_TEMP_LAG);
384 
385 	/* set interrupt threshold */
386 	value = hi3660_thermal_temp_to_step(sensor->thres_temp);
387 	hi3660_thermal_alarm_set(data->regs, sensor->id, value);
388 
389 	/* enable interrupt */
390 	hi3660_thermal_alarm_clear(data->regs, sensor->id, 1);
391 	hi3660_thermal_alarm_enable(data->regs, sensor->id, 1);
392 
393 	return 0;
394 }
395 
396 static int hi6220_thermal_probe(struct hisi_thermal_data *data)
397 {
398 	struct platform_device *pdev = data->pdev;
399 	struct device *dev = &pdev->dev;
400 	int ret;
401 
402 	data->clk = devm_clk_get(dev, "thermal_clk");
403 	if (IS_ERR(data->clk)) {
404 		ret = PTR_ERR(data->clk);
405 		if (ret != -EPROBE_DEFER)
406 			dev_err(dev, "failed to get thermal clk: %d\n", ret);
407 		return ret;
408 	}
409 
410 	data->sensor = devm_kzalloc(dev, sizeof(*data->sensor), GFP_KERNEL);
411 	if (!data->sensor)
412 		return -ENOMEM;
413 
414 	data->sensor[0].id = HI6220_CLUSTER0_SENSOR;
415 	data->sensor[0].irq_name = "tsensor_intr";
416 	data->sensor[0].data = data;
417 	data->nr_sensors = 1;
418 
419 	return 0;
420 }
421 
422 static int hi3660_thermal_probe(struct hisi_thermal_data *data)
423 {
424 	struct platform_device *pdev = data->pdev;
425 	struct device *dev = &pdev->dev;
426 
427 	data->nr_sensors = 1;
428 
429 	data->sensor = devm_kzalloc(dev, sizeof(*data->sensor) *
430 				    data->nr_sensors, GFP_KERNEL);
431 	if (!data->sensor)
432 		return -ENOMEM;
433 
434 	data->sensor[0].id = HI3660_BIG_SENSOR;
435 	data->sensor[0].irq_name = "tsensor_a73";
436 	data->sensor[0].data = data;
437 
438 	data->sensor[1].id = HI3660_LITTLE_SENSOR;
439 	data->sensor[1].irq_name = "tsensor_a53";
440 	data->sensor[1].data = data;
441 
442 	return 0;
443 }
444 
445 static int hisi_thermal_get_temp(void *__data, int *temp)
446 {
447 	struct hisi_thermal_sensor *sensor = __data;
448 	struct hisi_thermal_data *data = sensor->data;
449 
450 	*temp = data->ops->get_temp(sensor);
451 
452 	dev_dbg(&data->pdev->dev, "tzd=%p, id=%d, temp=%d, thres=%d\n",
453 		sensor->tzd, sensor->id, *temp, sensor->thres_temp);
454 
455 	return 0;
456 }
457 
458 static const struct thermal_zone_of_device_ops hisi_of_thermal_ops = {
459 	.get_temp = hisi_thermal_get_temp,
460 };
461 
462 static irqreturn_t hisi_thermal_alarm_irq_thread(int irq, void *dev)
463 {
464 	struct hisi_thermal_sensor *sensor = dev;
465 	struct hisi_thermal_data *data = sensor->data;
466 	int temp = 0;
467 
468 	data->ops->irq_handler(sensor);
469 
470 	hisi_thermal_get_temp(sensor, &temp);
471 
472 	if (temp >= sensor->thres_temp) {
473 		dev_crit(&data->pdev->dev,
474 			 "sensor <%d> THERMAL ALARM: %d > %d\n",
475 			 sensor->id, temp, sensor->thres_temp);
476 
477 		thermal_zone_device_update(sensor->tzd,
478 					   THERMAL_EVENT_UNSPECIFIED);
479 
480 	} else {
481 		dev_crit(&data->pdev->dev,
482 			 "sensor <%d> THERMAL ALARM stopped: %d < %d\n",
483 			 sensor->id, temp, sensor->thres_temp);
484 	}
485 
486 	return IRQ_HANDLED;
487 }
488 
489 static int hisi_thermal_register_sensor(struct platform_device *pdev,
490 					struct hisi_thermal_sensor *sensor)
491 {
492 	int ret, i;
493 	const struct thermal_trip *trip;
494 
495 	sensor->tzd = devm_thermal_zone_of_sensor_register(&pdev->dev,
496 							   sensor->id, sensor,
497 							   &hisi_of_thermal_ops);
498 	if (IS_ERR(sensor->tzd)) {
499 		ret = PTR_ERR(sensor->tzd);
500 		sensor->tzd = NULL;
501 		dev_err(&pdev->dev, "failed to register sensor id %d: %d\n",
502 			sensor->id, ret);
503 		return ret;
504 	}
505 
506 	trip = of_thermal_get_trip_points(sensor->tzd);
507 
508 	for (i = 0; i < of_thermal_get_ntrips(sensor->tzd); i++) {
509 		if (trip[i].type == THERMAL_TRIP_PASSIVE) {
510 			sensor->thres_temp = trip[i].temperature;
511 			break;
512 		}
513 	}
514 
515 	return 0;
516 }
517 
518 static const struct hisi_thermal_ops hi6220_ops = {
519 	.get_temp	= hi6220_thermal_get_temp,
520 	.enable_sensor	= hi6220_thermal_enable_sensor,
521 	.disable_sensor	= hi6220_thermal_disable_sensor,
522 	.irq_handler	= hi6220_thermal_irq_handler,
523 	.probe		= hi6220_thermal_probe,
524 };
525 
526 static const struct hisi_thermal_ops hi3660_ops = {
527 	.get_temp	= hi3660_thermal_get_temp,
528 	.enable_sensor	= hi3660_thermal_enable_sensor,
529 	.disable_sensor	= hi3660_thermal_disable_sensor,
530 	.irq_handler	= hi3660_thermal_irq_handler,
531 	.probe		= hi3660_thermal_probe,
532 };
533 
534 static const struct of_device_id of_hisi_thermal_match[] = {
535 	{
536 		.compatible = "hisilicon,tsensor",
537 		.data = &hi6220_ops,
538 	},
539 	{
540 		.compatible = "hisilicon,hi3660-tsensor",
541 		.data = &hi3660_ops,
542 	},
543 	{ /* end */ }
544 };
545 MODULE_DEVICE_TABLE(of, of_hisi_thermal_match);
546 
547 static void hisi_thermal_toggle_sensor(struct hisi_thermal_sensor *sensor,
548 				       bool on)
549 {
550 	struct thermal_zone_device *tzd = sensor->tzd;
551 
552 	if (on)
553 		thermal_zone_device_enable(tzd);
554 	else
555 		thermal_zone_device_disable(tzd);
556 }
557 
558 static int hisi_thermal_probe(struct platform_device *pdev)
559 {
560 	struct hisi_thermal_data *data;
561 	struct device *dev = &pdev->dev;
562 	struct resource *res;
563 	int i, ret;
564 
565 	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
566 	if (!data)
567 		return -ENOMEM;
568 
569 	data->pdev = pdev;
570 	platform_set_drvdata(pdev, data);
571 	data->ops = of_device_get_match_data(dev);
572 
573 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
574 	data->regs = devm_ioremap_resource(dev, res);
575 	if (IS_ERR(data->regs))
576 		return PTR_ERR(data->regs);
577 
578 	ret = data->ops->probe(data);
579 	if (ret)
580 		return ret;
581 
582 	for (i = 0; i < data->nr_sensors; i++) {
583 		struct hisi_thermal_sensor *sensor = &data->sensor[i];
584 
585 		ret = hisi_thermal_register_sensor(pdev, sensor);
586 		if (ret) {
587 			dev_err(dev, "failed to register thermal sensor: %d\n",
588 				ret);
589 			return ret;
590 		}
591 
592 		ret = platform_get_irq(pdev, 0);
593 		if (ret < 0)
594 			return ret;
595 
596 		ret = devm_request_threaded_irq(dev, ret, NULL,
597 						hisi_thermal_alarm_irq_thread,
598 						IRQF_ONESHOT, sensor->irq_name,
599 						sensor);
600 		if (ret < 0) {
601 			dev_err(dev, "Failed to request alarm irq: %d\n", ret);
602 			return ret;
603 		}
604 
605 		ret = data->ops->enable_sensor(sensor);
606 		if (ret) {
607 			dev_err(dev, "Failed to setup the sensor: %d\n", ret);
608 			return ret;
609 		}
610 
611 		hisi_thermal_toggle_sensor(sensor, true);
612 	}
613 
614 	return 0;
615 }
616 
617 static int hisi_thermal_remove(struct platform_device *pdev)
618 {
619 	struct hisi_thermal_data *data = platform_get_drvdata(pdev);
620 	int i;
621 
622 	for (i = 0; i < data->nr_sensors; i++) {
623 		struct hisi_thermal_sensor *sensor = &data->sensor[i];
624 
625 		hisi_thermal_toggle_sensor(sensor, false);
626 		data->ops->disable_sensor(sensor);
627 	}
628 
629 	return 0;
630 }
631 
632 static int hisi_thermal_suspend(struct device *dev)
633 {
634 	struct hisi_thermal_data *data = dev_get_drvdata(dev);
635 	int i;
636 
637 	for (i = 0; i < data->nr_sensors; i++)
638 		data->ops->disable_sensor(&data->sensor[i]);
639 
640 	return 0;
641 }
642 
643 static int hisi_thermal_resume(struct device *dev)
644 {
645 	struct hisi_thermal_data *data = dev_get_drvdata(dev);
646 	int i, ret = 0;
647 
648 	for (i = 0; i < data->nr_sensors; i++)
649 		ret |= data->ops->enable_sensor(&data->sensor[i]);
650 
651 	return ret;
652 }
653 
654 static DEFINE_SIMPLE_DEV_PM_OPS(hisi_thermal_pm_ops,
655 			 hisi_thermal_suspend, hisi_thermal_resume);
656 
657 static struct platform_driver hisi_thermal_driver = {
658 	.driver = {
659 		.name		= "hisi_thermal",
660 		.pm		= pm_sleep_ptr(&hisi_thermal_pm_ops),
661 		.of_match_table = of_hisi_thermal_match,
662 	},
663 	.probe	= hisi_thermal_probe,
664 	.remove	= hisi_thermal_remove,
665 };
666 
667 module_platform_driver(hisi_thermal_driver);
668 
669 MODULE_AUTHOR("Xinwei Kong <kong.kongxinwei@hisilicon.com>");
670 MODULE_AUTHOR("Leo Yan <leo.yan@linaro.org>");
671 MODULE_DESCRIPTION("HiSilicon thermal driver");
672 MODULE_LICENSE("GPL v2");
673