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Merge remote-tracking branch 'asoc/fix/dapm' into asoc-linus
[deliverable/linux.git] / drivers / thermal / imx_thermal.c
1 /*
2 * Copyright 2013 Freescale Semiconductor, Inc.
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 *
8 */
9
10 #include <linux/clk.h>
11 #include <linux/cpu_cooling.h>
12 #include <linux/delay.h>
13 #include <linux/device.h>
14 #include <linux/init.h>
15 #include <linux/interrupt.h>
16 #include <linux/io.h>
17 #include <linux/kernel.h>
18 #include <linux/mfd/syscon.h>
19 #include <linux/module.h>
20 #include <linux/of.h>
21 #include <linux/of_device.h>
22 #include <linux/platform_device.h>
23 #include <linux/regmap.h>
24 #include <linux/slab.h>
25 #include <linux/thermal.h>
26 #include <linux/types.h>
27
28 #define REG_SET 0x4
29 #define REG_CLR 0x8
30 #define REG_TOG 0xc
31
32 #define MISC0 0x0150
33 #define MISC0_REFTOP_SELBIASOFF (1 << 3)
34 #define MISC1 0x0160
35 #define MISC1_IRQ_TEMPHIGH (1 << 29)
36 /* Below LOW and PANIC bits are only for TEMPMON_IMX6SX */
37 #define MISC1_IRQ_TEMPLOW (1 << 28)
38 #define MISC1_IRQ_TEMPPANIC (1 << 27)
39
40 #define TEMPSENSE0 0x0180
41 #define TEMPSENSE0_ALARM_VALUE_SHIFT 20
42 #define TEMPSENSE0_ALARM_VALUE_MASK (0xfff << TEMPSENSE0_ALARM_VALUE_SHIFT)
43 #define TEMPSENSE0_TEMP_CNT_SHIFT 8
44 #define TEMPSENSE0_TEMP_CNT_MASK (0xfff << TEMPSENSE0_TEMP_CNT_SHIFT)
45 #define TEMPSENSE0_FINISHED (1 << 2)
46 #define TEMPSENSE0_MEASURE_TEMP (1 << 1)
47 #define TEMPSENSE0_POWER_DOWN (1 << 0)
48
49 #define TEMPSENSE1 0x0190
50 #define TEMPSENSE1_MEASURE_FREQ 0xffff
51 /* Below TEMPSENSE2 is only for TEMPMON_IMX6SX */
52 #define TEMPSENSE2 0x0290
53 #define TEMPSENSE2_LOW_VALUE_SHIFT 0
54 #define TEMPSENSE2_LOW_VALUE_MASK 0xfff
55 #define TEMPSENSE2_PANIC_VALUE_SHIFT 16
56 #define TEMPSENSE2_PANIC_VALUE_MASK 0xfff0000
57
58 #define OCOTP_ANA1 0x04e0
59
60 /* The driver supports 1 passive trip point and 1 critical trip point */
61 enum imx_thermal_trip {
62 IMX_TRIP_PASSIVE,
63 IMX_TRIP_CRITICAL,
64 IMX_TRIP_NUM,
65 };
66
67 /*
68 * It defines the temperature in millicelsius for passive trip point
69 * that will trigger cooling action when crossed.
70 */
71 #define IMX_TEMP_PASSIVE 85000
72
73 #define IMX_POLLING_DELAY 2000 /* millisecond */
74 #define IMX_PASSIVE_DELAY 1000
75
76 #define FACTOR0 10000000
77 #define FACTOR1 15976
78 #define FACTOR2 4297157
79
80 #define TEMPMON_IMX6Q 1
81 #define TEMPMON_IMX6SX 2
82
83 struct thermal_soc_data {
84 u32 version;
85 };
86
87 static struct thermal_soc_data thermal_imx6q_data = {
88 .version = TEMPMON_IMX6Q,
89 };
90
91 static struct thermal_soc_data thermal_imx6sx_data = {
92 .version = TEMPMON_IMX6SX,
93 };
94
95 struct imx_thermal_data {
96 struct thermal_zone_device *tz;
97 struct thermal_cooling_device *cdev;
98 enum thermal_device_mode mode;
99 struct regmap *tempmon;
100 u32 c1, c2; /* See formula in imx_get_sensor_data() */
101 unsigned long temp_passive;
102 unsigned long temp_critical;
103 unsigned long alarm_temp;
104 unsigned long last_temp;
105 bool irq_enabled;
106 int irq;
107 struct clk *thermal_clk;
108 const struct thermal_soc_data *socdata;
109 };
110
111 static void imx_set_panic_temp(struct imx_thermal_data *data,
112 signed long panic_temp)
113 {
114 struct regmap *map = data->tempmon;
115 int critical_value;
116
117 critical_value = (data->c2 - panic_temp) / data->c1;
118 regmap_write(map, TEMPSENSE2 + REG_CLR, TEMPSENSE2_PANIC_VALUE_MASK);
119 regmap_write(map, TEMPSENSE2 + REG_SET, critical_value <<
120 TEMPSENSE2_PANIC_VALUE_SHIFT);
121 }
122
123 static void imx_set_alarm_temp(struct imx_thermal_data *data,
124 signed long alarm_temp)
125 {
126 struct regmap *map = data->tempmon;
127 int alarm_value;
128
129 data->alarm_temp = alarm_temp;
130 alarm_value = (data->c2 - alarm_temp) / data->c1;
131 regmap_write(map, TEMPSENSE0 + REG_CLR, TEMPSENSE0_ALARM_VALUE_MASK);
132 regmap_write(map, TEMPSENSE0 + REG_SET, alarm_value <<
133 TEMPSENSE0_ALARM_VALUE_SHIFT);
134 }
135
136 static int imx_get_temp(struct thermal_zone_device *tz, unsigned long *temp)
137 {
138 struct imx_thermal_data *data = tz->devdata;
139 struct regmap *map = data->tempmon;
140 unsigned int n_meas;
141 bool wait;
142 u32 val;
143
144 if (data->mode == THERMAL_DEVICE_ENABLED) {
145 /* Check if a measurement is currently in progress */
146 regmap_read(map, TEMPSENSE0, &val);
147 wait = !(val & TEMPSENSE0_FINISHED);
148 } else {
149 /*
150 * Every time we measure the temperature, we will power on the
151 * temperature sensor, enable measurements, take a reading,
152 * disable measurements, power off the temperature sensor.
153 */
154 regmap_write(map, TEMPSENSE0 + REG_CLR, TEMPSENSE0_POWER_DOWN);
155 regmap_write(map, TEMPSENSE0 + REG_SET, TEMPSENSE0_MEASURE_TEMP);
156
157 wait = true;
158 }
159
160 /*
161 * According to the temp sensor designers, it may require up to ~17us
162 * to complete a measurement.
163 */
164 if (wait)
165 usleep_range(20, 50);
166
167 regmap_read(map, TEMPSENSE0, &val);
168
169 if (data->mode != THERMAL_DEVICE_ENABLED) {
170 regmap_write(map, TEMPSENSE0 + REG_CLR, TEMPSENSE0_MEASURE_TEMP);
171 regmap_write(map, TEMPSENSE0 + REG_SET, TEMPSENSE0_POWER_DOWN);
172 }
173
174 if ((val & TEMPSENSE0_FINISHED) == 0) {
175 dev_dbg(&tz->device, "temp measurement never finished\n");
176 return -EAGAIN;
177 }
178
179 n_meas = (val & TEMPSENSE0_TEMP_CNT_MASK) >> TEMPSENSE0_TEMP_CNT_SHIFT;
180
181 /* See imx_get_sensor_data() for formula derivation */
182 *temp = data->c2 - n_meas * data->c1;
183
184 /* Update alarm value to next higher trip point for TEMPMON_IMX6Q */
185 if (data->socdata->version == TEMPMON_IMX6Q) {
186 if (data->alarm_temp == data->temp_passive &&
187 *temp >= data->temp_passive)
188 imx_set_alarm_temp(data, data->temp_critical);
189 if (data->alarm_temp == data->temp_critical &&
190 *temp < data->temp_passive) {
191 imx_set_alarm_temp(data, data->temp_passive);
192 dev_dbg(&tz->device, "thermal alarm off: T < %lu\n",
193 data->alarm_temp / 1000);
194 }
195 }
196
197 if (*temp != data->last_temp) {
198 dev_dbg(&tz->device, "millicelsius: %ld\n", *temp);
199 data->last_temp = *temp;
200 }
201
202 /* Reenable alarm IRQ if temperature below alarm temperature */
203 if (!data->irq_enabled && *temp < data->alarm_temp) {
204 data->irq_enabled = true;
205 enable_irq(data->irq);
206 }
207
208 return 0;
209 }
210
211 static int imx_get_mode(struct thermal_zone_device *tz,
212 enum thermal_device_mode *mode)
213 {
214 struct imx_thermal_data *data = tz->devdata;
215
216 *mode = data->mode;
217
218 return 0;
219 }
220
221 static int imx_set_mode(struct thermal_zone_device *tz,
222 enum thermal_device_mode mode)
223 {
224 struct imx_thermal_data *data = tz->devdata;
225 struct regmap *map = data->tempmon;
226
227 if (mode == THERMAL_DEVICE_ENABLED) {
228 tz->polling_delay = IMX_POLLING_DELAY;
229 tz->passive_delay = IMX_PASSIVE_DELAY;
230
231 regmap_write(map, TEMPSENSE0 + REG_CLR, TEMPSENSE0_POWER_DOWN);
232 regmap_write(map, TEMPSENSE0 + REG_SET, TEMPSENSE0_MEASURE_TEMP);
233
234 if (!data->irq_enabled) {
235 data->irq_enabled = true;
236 enable_irq(data->irq);
237 }
238 } else {
239 regmap_write(map, TEMPSENSE0 + REG_CLR, TEMPSENSE0_MEASURE_TEMP);
240 regmap_write(map, TEMPSENSE0 + REG_SET, TEMPSENSE0_POWER_DOWN);
241
242 tz->polling_delay = 0;
243 tz->passive_delay = 0;
244
245 if (data->irq_enabled) {
246 disable_irq(data->irq);
247 data->irq_enabled = false;
248 }
249 }
250
251 data->mode = mode;
252 thermal_zone_device_update(tz);
253
254 return 0;
255 }
256
257 static int imx_get_trip_type(struct thermal_zone_device *tz, int trip,
258 enum thermal_trip_type *type)
259 {
260 *type = (trip == IMX_TRIP_PASSIVE) ? THERMAL_TRIP_PASSIVE :
261 THERMAL_TRIP_CRITICAL;
262 return 0;
263 }
264
265 static int imx_get_crit_temp(struct thermal_zone_device *tz,
266 unsigned long *temp)
267 {
268 struct imx_thermal_data *data = tz->devdata;
269
270 *temp = data->temp_critical;
271 return 0;
272 }
273
274 static int imx_get_trip_temp(struct thermal_zone_device *tz, int trip,
275 unsigned long *temp)
276 {
277 struct imx_thermal_data *data = tz->devdata;
278
279 *temp = (trip == IMX_TRIP_PASSIVE) ? data->temp_passive :
280 data->temp_critical;
281 return 0;
282 }
283
284 static int imx_set_trip_temp(struct thermal_zone_device *tz, int trip,
285 unsigned long temp)
286 {
287 struct imx_thermal_data *data = tz->devdata;
288
289 if (trip == IMX_TRIP_CRITICAL)
290 return -EPERM;
291
292 if (temp > IMX_TEMP_PASSIVE)
293 return -EINVAL;
294
295 data->temp_passive = temp;
296
297 imx_set_alarm_temp(data, temp);
298
299 return 0;
300 }
301
302 static int imx_bind(struct thermal_zone_device *tz,
303 struct thermal_cooling_device *cdev)
304 {
305 int ret;
306
307 ret = thermal_zone_bind_cooling_device(tz, IMX_TRIP_PASSIVE, cdev,
308 THERMAL_NO_LIMIT,
309 THERMAL_NO_LIMIT,
310 THERMAL_WEIGHT_DEFAULT);
311 if (ret) {
312 dev_err(&tz->device,
313 "binding zone %s with cdev %s failed:%d\n",
314 tz->type, cdev->type, ret);
315 return ret;
316 }
317
318 return 0;
319 }
320
321 static int imx_unbind(struct thermal_zone_device *tz,
322 struct thermal_cooling_device *cdev)
323 {
324 int ret;
325
326 ret = thermal_zone_unbind_cooling_device(tz, IMX_TRIP_PASSIVE, cdev);
327 if (ret) {
328 dev_err(&tz->device,
329 "unbinding zone %s with cdev %s failed:%d\n",
330 tz->type, cdev->type, ret);
331 return ret;
332 }
333
334 return 0;
335 }
336
337 static struct thermal_zone_device_ops imx_tz_ops = {
338 .bind = imx_bind,
339 .unbind = imx_unbind,
340 .get_temp = imx_get_temp,
341 .get_mode = imx_get_mode,
342 .set_mode = imx_set_mode,
343 .get_trip_type = imx_get_trip_type,
344 .get_trip_temp = imx_get_trip_temp,
345 .get_crit_temp = imx_get_crit_temp,
346 .set_trip_temp = imx_set_trip_temp,
347 };
348
349 static int imx_get_sensor_data(struct platform_device *pdev)
350 {
351 struct imx_thermal_data *data = platform_get_drvdata(pdev);
352 struct regmap *map;
353 int t1, n1;
354 int ret;
355 u32 val;
356 u64 temp64;
357
358 map = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,
359 "fsl,tempmon-data");
360 if (IS_ERR(map)) {
361 ret = PTR_ERR(map);
362 dev_err(&pdev->dev, "failed to get sensor regmap: %d\n", ret);
363 return ret;
364 }
365
366 ret = regmap_read(map, OCOTP_ANA1, &val);
367 if (ret) {
368 dev_err(&pdev->dev, "failed to read sensor data: %d\n", ret);
369 return ret;
370 }
371
372 if (val == 0 || val == ~0) {
373 dev_err(&pdev->dev, "invalid sensor calibration data\n");
374 return -EINVAL;
375 }
376
377 /*
378 * Sensor data layout:
379 * [31:20] - sensor value @ 25C
380 * Use universal formula now and only need sensor value @ 25C
381 * slope = 0.4297157 - (0.0015976 * 25C fuse)
382 */
383 n1 = val >> 20;
384 t1 = 25; /* t1 always 25C */
385
386 /*
387 * Derived from linear interpolation:
388 * slope = 0.4297157 - (0.0015976 * 25C fuse)
389 * slope = (FACTOR2 - FACTOR1 * n1) / FACTOR0
390 * (Nmeas - n1) / (Tmeas - t1) = slope
391 * We want to reduce this down to the minimum computation necessary
392 * for each temperature read. Also, we want Tmeas in millicelsius
393 * and we don't want to lose precision from integer division. So...
394 * Tmeas = (Nmeas - n1) / slope + t1
395 * milli_Tmeas = 1000 * (Nmeas - n1) / slope + 1000 * t1
396 * milli_Tmeas = -1000 * (n1 - Nmeas) / slope + 1000 * t1
397 * Let constant c1 = (-1000 / slope)
398 * milli_Tmeas = (n1 - Nmeas) * c1 + 1000 * t1
399 * Let constant c2 = n1 *c1 + 1000 * t1
400 * milli_Tmeas = c2 - Nmeas * c1
401 */
402 temp64 = FACTOR0;
403 temp64 *= 1000;
404 do_div(temp64, FACTOR1 * n1 - FACTOR2);
405 data->c1 = temp64;
406 data->c2 = n1 * data->c1 + 1000 * t1;
407
408 /*
409 * Set the default passive cooling trip point,
410 * can be changed from userspace.
411 */
412 data->temp_passive = IMX_TEMP_PASSIVE;
413
414 /*
415 * The maximum die temperature set to 20 C higher than
416 * IMX_TEMP_PASSIVE.
417 */
418 data->temp_critical = 1000 * 20 + data->temp_passive;
419
420 return 0;
421 }
422
423 static irqreturn_t imx_thermal_alarm_irq(int irq, void *dev)
424 {
425 struct imx_thermal_data *data = dev;
426
427 disable_irq_nosync(irq);
428 data->irq_enabled = false;
429
430 return IRQ_WAKE_THREAD;
431 }
432
433 static irqreturn_t imx_thermal_alarm_irq_thread(int irq, void *dev)
434 {
435 struct imx_thermal_data *data = dev;
436
437 dev_dbg(&data->tz->device, "THERMAL ALARM: T > %lu\n",
438 data->alarm_temp / 1000);
439
440 thermal_zone_device_update(data->tz);
441
442 return IRQ_HANDLED;
443 }
444
445 static const struct of_device_id of_imx_thermal_match[] = {
446 { .compatible = "fsl,imx6q-tempmon", .data = &thermal_imx6q_data, },
447 { .compatible = "fsl,imx6sx-tempmon", .data = &thermal_imx6sx_data, },
448 { /* end */ }
449 };
450 MODULE_DEVICE_TABLE(of, of_imx_thermal_match);
451
452 static int imx_thermal_probe(struct platform_device *pdev)
453 {
454 const struct of_device_id *of_id =
455 of_match_device(of_imx_thermal_match, &pdev->dev);
456 struct imx_thermal_data *data;
457 struct regmap *map;
458 int measure_freq;
459 int ret;
460
461 data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
462 if (!data)
463 return -ENOMEM;
464
465 map = syscon_regmap_lookup_by_phandle(pdev->dev.of_node, "fsl,tempmon");
466 if (IS_ERR(map)) {
467 ret = PTR_ERR(map);
468 dev_err(&pdev->dev, "failed to get tempmon regmap: %d\n", ret);
469 return ret;
470 }
471 data->tempmon = map;
472
473 data->socdata = of_id->data;
474
475 /* make sure the IRQ flag is clear before enabling irq on i.MX6SX */
476 if (data->socdata->version == TEMPMON_IMX6SX) {
477 regmap_write(map, MISC1 + REG_CLR, MISC1_IRQ_TEMPHIGH |
478 MISC1_IRQ_TEMPLOW | MISC1_IRQ_TEMPPANIC);
479 /*
480 * reset value of LOW ALARM is incorrect, set it to lowest
481 * value to avoid false trigger of low alarm.
482 */
483 regmap_write(map, TEMPSENSE2 + REG_SET,
484 TEMPSENSE2_LOW_VALUE_MASK);
485 }
486
487 data->irq = platform_get_irq(pdev, 0);
488 if (data->irq < 0)
489 return data->irq;
490
491 ret = devm_request_threaded_irq(&pdev->dev, data->irq,
492 imx_thermal_alarm_irq, imx_thermal_alarm_irq_thread,
493 0, "imx_thermal", data);
494 if (ret < 0) {
495 dev_err(&pdev->dev, "failed to request alarm irq: %d\n", ret);
496 return ret;
497 }
498
499 platform_set_drvdata(pdev, data);
500
501 ret = imx_get_sensor_data(pdev);
502 if (ret) {
503 dev_err(&pdev->dev, "failed to get sensor data\n");
504 return ret;
505 }
506
507 /* Make sure sensor is in known good state for measurements */
508 regmap_write(map, TEMPSENSE0 + REG_CLR, TEMPSENSE0_POWER_DOWN);
509 regmap_write(map, TEMPSENSE0 + REG_CLR, TEMPSENSE0_MEASURE_TEMP);
510 regmap_write(map, TEMPSENSE1 + REG_CLR, TEMPSENSE1_MEASURE_FREQ);
511 regmap_write(map, MISC0 + REG_SET, MISC0_REFTOP_SELBIASOFF);
512 regmap_write(map, TEMPSENSE0 + REG_SET, TEMPSENSE0_POWER_DOWN);
513
514 data->cdev = cpufreq_cooling_register(cpu_present_mask);
515 if (IS_ERR(data->cdev)) {
516 ret = PTR_ERR(data->cdev);
517 if (ret != -EPROBE_DEFER)
518 dev_err(&pdev->dev,
519 "failed to register cpufreq cooling device: %d\n",
520 ret);
521 return ret;
522 }
523
524 data->thermal_clk = devm_clk_get(&pdev->dev, NULL);
525 if (IS_ERR(data->thermal_clk)) {
526 ret = PTR_ERR(data->thermal_clk);
527 if (ret != -EPROBE_DEFER)
528 dev_err(&pdev->dev,
529 "failed to get thermal clk: %d\n", ret);
530 cpufreq_cooling_unregister(data->cdev);
531 return ret;
532 }
533
534 /*
535 * Thermal sensor needs clk on to get correct value, normally
536 * we should enable its clk before taking measurement and disable
537 * clk after measurement is done, but if alarm function is enabled,
538 * hardware will auto measure the temperature periodically, so we
539 * need to keep the clk always on for alarm function.
540 */
541 ret = clk_prepare_enable(data->thermal_clk);
542 if (ret) {
543 dev_err(&pdev->dev, "failed to enable thermal clk: %d\n", ret);
544 cpufreq_cooling_unregister(data->cdev);
545 return ret;
546 }
547
548 data->tz = thermal_zone_device_register("imx_thermal_zone",
549 IMX_TRIP_NUM,
550 BIT(IMX_TRIP_PASSIVE), data,
551 &imx_tz_ops, NULL,
552 IMX_PASSIVE_DELAY,
553 IMX_POLLING_DELAY);
554 if (IS_ERR(data->tz)) {
555 ret = PTR_ERR(data->tz);
556 dev_err(&pdev->dev,
557 "failed to register thermal zone device %d\n", ret);
558 clk_disable_unprepare(data->thermal_clk);
559 cpufreq_cooling_unregister(data->cdev);
560 return ret;
561 }
562
563 /* Enable measurements at ~ 10 Hz */
564 regmap_write(map, TEMPSENSE1 + REG_CLR, TEMPSENSE1_MEASURE_FREQ);
565 measure_freq = DIV_ROUND_UP(32768, 10); /* 10 Hz */
566 regmap_write(map, TEMPSENSE1 + REG_SET, measure_freq);
567 imx_set_alarm_temp(data, data->temp_passive);
568
569 if (data->socdata->version == TEMPMON_IMX6SX)
570 imx_set_panic_temp(data, data->temp_critical);
571
572 regmap_write(map, TEMPSENSE0 + REG_CLR, TEMPSENSE0_POWER_DOWN);
573 regmap_write(map, TEMPSENSE0 + REG_SET, TEMPSENSE0_MEASURE_TEMP);
574
575 data->irq_enabled = true;
576 data->mode = THERMAL_DEVICE_ENABLED;
577
578 return 0;
579 }
580
581 static int imx_thermal_remove(struct platform_device *pdev)
582 {
583 struct imx_thermal_data *data = platform_get_drvdata(pdev);
584 struct regmap *map = data->tempmon;
585
586 /* Disable measurements */
587 regmap_write(map, TEMPSENSE0 + REG_SET, TEMPSENSE0_POWER_DOWN);
588 if (!IS_ERR(data->thermal_clk))
589 clk_disable_unprepare(data->thermal_clk);
590
591 thermal_zone_device_unregister(data->tz);
592 cpufreq_cooling_unregister(data->cdev);
593
594 return 0;
595 }
596
597 #ifdef CONFIG_PM_SLEEP
598 static int imx_thermal_suspend(struct device *dev)
599 {
600 struct imx_thermal_data *data = dev_get_drvdata(dev);
601 struct regmap *map = data->tempmon;
602
603 /*
604 * Need to disable thermal sensor, otherwise, when thermal core
605 * try to get temperature before thermal sensor resume, a wrong
606 * temperature will be read as the thermal sensor is powered
607 * down.
608 */
609 regmap_write(map, TEMPSENSE0 + REG_CLR, TEMPSENSE0_MEASURE_TEMP);
610 regmap_write(map, TEMPSENSE0 + REG_SET, TEMPSENSE0_POWER_DOWN);
611 data->mode = THERMAL_DEVICE_DISABLED;
612 clk_disable_unprepare(data->thermal_clk);
613
614 return 0;
615 }
616
617 static int imx_thermal_resume(struct device *dev)
618 {
619 struct imx_thermal_data *data = dev_get_drvdata(dev);
620 struct regmap *map = data->tempmon;
621
622 clk_prepare_enable(data->thermal_clk);
623 /* Enabled thermal sensor after resume */
624 regmap_write(map, TEMPSENSE0 + REG_CLR, TEMPSENSE0_POWER_DOWN);
625 regmap_write(map, TEMPSENSE0 + REG_SET, TEMPSENSE0_MEASURE_TEMP);
626 data->mode = THERMAL_DEVICE_ENABLED;
627
628 return 0;
629 }
630 #endif
631
632 static SIMPLE_DEV_PM_OPS(imx_thermal_pm_ops,
633 imx_thermal_suspend, imx_thermal_resume);
634
635 static struct platform_driver imx_thermal = {
636 .driver = {
637 .name = "imx_thermal",
638 .pm = &imx_thermal_pm_ops,
639 .of_match_table = of_imx_thermal_match,
640 },
641 .probe = imx_thermal_probe,
642 .remove = imx_thermal_remove,
643 };
644 module_platform_driver(imx_thermal);
645
646 MODULE_AUTHOR("Freescale Semiconductor, Inc.");
647 MODULE_DESCRIPTION("Thermal driver for Freescale i.MX SoCs");
648 MODULE_LICENSE("GPL v2");
649 MODULE_ALIAS("platform:imx-thermal");
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