summaryrefslogtreecommitdiffstats
path: root/drivers/thermal/sun8i_thermal.c
blob: f989b55a8aa8e35a07ff646f44cfc19721b0daa8 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
// SPDX-License-Identifier: GPL-2.0
/*
 * Thermal sensor driver for Allwinner SOC
 * Copyright (C) 2019 Yangtao Li
 *
 * Based on the work of Icenowy Zheng <icenowy@aosc.io>
 * Based on the work of Ondrej Jirman <megous@megous.com>
 * Based on the work of Josef Gajdusek <atx@atx.name>
 */

#include <linux/bitmap.h>
#include <linux/clk.h>
#include <linux/device.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/nvmem-consumer.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/reset.h>
#include <linux/slab.h>
#include <linux/thermal.h>

#include "thermal_hwmon.h"

#define MAX_SENSOR_NUM	4

#define FT_TEMP_MASK				GENMASK(11, 0)
#define TEMP_CALIB_MASK				GENMASK(11, 0)
#define CALIBRATE_DEFAULT			0x800

#define SUN8I_THS_CTRL0				0x00
#define SUN8I_THS_CTRL2				0x40
#define SUN8I_THS_IC				0x44
#define SUN8I_THS_IS				0x48
#define SUN8I_THS_MFC				0x70
#define SUN8I_THS_TEMP_CALIB			0x74
#define SUN8I_THS_TEMP_DATA			0x80

#define SUN50I_THS_CTRL0			0x00
#define SUN50I_H6_THS_ENABLE			0x04
#define SUN50I_H6_THS_PC			0x08
#define SUN50I_H6_THS_DIC			0x10
#define SUN50I_H6_THS_DIS			0x20
#define SUN50I_H6_THS_MFC			0x30
#define SUN50I_H6_THS_TEMP_CALIB		0xa0
#define SUN50I_H6_THS_TEMP_DATA			0xc0

#define SUN8I_THS_CTRL0_T_ACQ0(x)		(GENMASK(15, 0) & (x))
#define SUN8I_THS_CTRL2_T_ACQ1(x)		((GENMASK(15, 0) & (x)) << 16)
#define SUN8I_THS_DATA_IRQ_STS(x)		BIT(x + 8)

#define SUN50I_THS_CTRL0_T_ACQ(x)		((GENMASK(15, 0) & (x)) << 16)
#define SUN50I_THS_FILTER_EN			BIT(2)
#define SUN50I_THS_FILTER_TYPE(x)		(GENMASK(1, 0) & (x))
#define SUN50I_H6_THS_PC_TEMP_PERIOD(x)		((GENMASK(19, 0) & (x)) << 12)
#define SUN50I_H6_THS_DATA_IRQ_STS(x)		BIT(x)

struct tsensor {
	struct ths_device		*tmdev;
	struct thermal_zone_device	*tzd;
	int				id;
};

struct ths_thermal_chip {
	bool            has_mod_clk;
	bool            has_bus_clk_reset;
	int		sensor_num;
	int		offset;
	int		scale;
	int		ft_deviation;
	int		temp_data_base;
	int		(*calibrate)(struct ths_device *tmdev,
				     u16 *caldata, int callen);
	int		(*init)(struct ths_device *tmdev);
	unsigned long	(*irq_ack)(struct ths_device *tmdev);
	int		(*calc_temp)(struct ths_device *tmdev,
				     int id, int reg);
};

struct ths_device {
	const struct ths_thermal_chip		*chip;
	struct device				*dev;
	struct regmap				*regmap;
	struct reset_control			*reset;
	struct clk				*bus_clk;
	struct clk                              *mod_clk;
	struct tsensor				sensor[MAX_SENSOR_NUM];
};

/* Temp Unit: millidegree Celsius */
static int sun8i_ths_calc_temp(struct ths_device *tmdev,
			       int id, int reg)
{
	return tmdev->chip->offset - (reg * tmdev->chip->scale / 10);
}

static int sun50i_h5_calc_temp(struct ths_device *tmdev,
			       int id, int reg)
{
	if (reg >= 0x500)
		return -1191 * reg / 10 + 223000;
	else if (!id)
		return -1452 * reg / 10 + 259000;
	else
		return -1590 * reg / 10 + 276000;
}

static int sun8i_ths_get_temp(struct thermal_zone_device *tz, int *temp)
{
	struct tsensor *s = thermal_zone_device_priv(tz);
	struct ths_device *tmdev = s->tmdev;
	int val = 0;

	regmap_read(tmdev->regmap, tmdev->chip->temp_data_base +
		    0x4 * s->id, &val);

	/* ths have no data yet */
	if (!val)
		return -EAGAIN;

	*temp = tmdev->chip->calc_temp(tmdev, s->id, val);
	/*
	 * According to the original sdk, there are some platforms(rarely)
	 * that add a fixed offset value after calculating the temperature
	 * value. We can't simply put it on the formula for calculating the
	 * temperature above, because the formula for calculating the
	 * temperature above is also used when the sensor is calibrated. If
	 * do this, the correct calibration formula is hard to know.
	 */
	*temp += tmdev->chip->ft_deviation;

	return 0;
}

static const struct thermal_zone_device_ops ths_ops = {
	.get_temp = sun8i_ths_get_temp,
};

static const struct regmap_config config = {
	.reg_bits = 32,
	.val_bits = 32,
	.reg_stride = 4,
	.fast_io = true,
	.max_register = 0xfc,
};

static unsigned long sun8i_h3_irq_ack(struct ths_device *tmdev)
{
	unsigned long irq_bitmap = 0;
	int i, state;

	regmap_read(tmdev->regmap, SUN8I_THS_IS, &state);

	for (i = 0; i < tmdev->chip->sensor_num; i++) {
		if (state & SUN8I_THS_DATA_IRQ_STS(i)) {
			regmap_write(tmdev->regmap, SUN8I_THS_IS,
				     SUN8I_THS_DATA_IRQ_STS(i));
			bitmap_set(&irq_bitmap, i, 1);
		}
	}

	return irq_bitmap;
}

static unsigned long sun50i_h6_irq_ack(struct ths_device *tmdev)
{
	unsigned long irq_bitmap = 0;
	int i, state;

	regmap_read(tmdev->regmap, SUN50I_H6_THS_DIS, &state);

	for (i = 0; i < tmdev->chip->sensor_num; i++) {
		if (state & SUN50I_H6_THS_DATA_IRQ_STS(i)) {
			regmap_write(tmdev->regmap, SUN50I_H6_THS_DIS,
				     SUN50I_H6_THS_DATA_IRQ_STS(i));
			bitmap_set(&irq_bitmap, i, 1);
		}
	}

	return irq_bitmap;
}

static irqreturn_t sun8i_irq_thread(int irq, void *data)
{
	struct ths_device *tmdev = data;
	unsigned long irq_bitmap = tmdev->chip->irq_ack(tmdev);
	int i;

	for_each_set_bit(i, &irq_bitmap, tmdev->chip->sensor_num) {
		thermal_zone_device_update(tmdev->sensor[i].tzd,
					   THERMAL_EVENT_UNSPECIFIED);
	}

	return IRQ_HANDLED;
}

static int sun8i_h3_ths_calibrate(struct ths_device *tmdev,
				  u16 *caldata, int callen)
{
	int i;

	if (!caldata[0] || callen < 2 * tmdev->chip->sensor_num)
		return -EINVAL;

	for (i = 0; i < tmdev->chip->sensor_num; i++) {
		int offset = (i % 2) << 4;

		regmap_update_bits(tmdev->regmap,
				   SUN8I_THS_TEMP_CALIB + (4 * (i >> 1)),
				   TEMP_CALIB_MASK << offset,
				   caldata[i] << offset);
	}

	return 0;
}

static int sun50i_h6_ths_calibrate(struct ths_device *tmdev,
				   u16 *caldata, int callen)
{
	struct device *dev = tmdev->dev;
	int i, ft_temp;

	if (!caldata[0] || callen < 2 + 2 * tmdev->chip->sensor_num)
		return -EINVAL;

	/*
	 * efuse layout:
	 *
	 *	0   11  16	 32
	 *	+-------+-------+-------+
	 *	|temp|  |sensor0|sensor1|
	 *	+-------+-------+-------+
	 *
	 * The calibration data on the H6 is the ambient temperature and
	 * sensor values that are filled during the factory test stage.
	 *
	 * The unit of stored FT temperature is 0.1 degree celsius.
	 *
	 * We need to calculate a delta between measured and caluclated
	 * register values and this will become a calibration offset.
	 */
	ft_temp = (caldata[0] & FT_TEMP_MASK) * 100;

	for (i = 0; i < tmdev->chip->sensor_num; i++) {
		int sensor_reg = caldata[i + 1] & TEMP_CALIB_MASK;
		int cdata, offset;
		int sensor_temp = tmdev->chip->calc_temp(tmdev, i, sensor_reg);

		/*
		 * Calibration data is CALIBRATE_DEFAULT - (calculated
		 * temperature from sensor reading at factory temperature
		 * minus actual factory temperature) * 14.88 (scale from
		 * temperature to register values)
		 */
		cdata = CALIBRATE_DEFAULT -
			((sensor_temp - ft_temp) * 10 / tmdev->chip->scale);
		if (cdata & ~TEMP_CALIB_MASK) {
			/*
			 * Calibration value more than 12-bit, but calibration
			 * register is 12-bit. In this case, ths hardware can
			 * still work without calibration, although the data
			 * won't be so accurate.
			 */
			dev_warn(dev, "sensor%d is not calibrated.\n", i);
			continue;
		}

		offset = (i % 2) * 16;
		regmap_update_bits(tmdev->regmap,
				   SUN50I_H6_THS_TEMP_CALIB + (i / 2 * 4),
				   TEMP_CALIB_MASK << offset,
				   cdata << offset);
	}

	return 0;
}

static int sun8i_ths_calibrate(struct ths_device *tmdev)
{
	struct nvmem_cell *calcell;
	struct device *dev = tmdev->dev;
	u16 *caldata;
	size_t callen;
	int ret = 0;

	calcell = nvmem_cell_get(dev, "calibration");
	if (IS_ERR(calcell)) {
		if (PTR_ERR(calcell) == -EPROBE_DEFER)
			return -EPROBE_DEFER;
		/*
		 * Even if the external calibration data stored in sid is
		 * not accessible, the THS hardware can still work, although
		 * the data won't be so accurate.
		 *
		 * The default value of calibration register is 0x800 for
		 * every sensor, and the calibration value is usually 0x7xx
		 * or 0x8xx, so they won't be away from the default value
		 * for a lot.
		 *
		 * So here we do not return error if the calibration data is
		 * not available, except the probe needs deferring.
		 */
		goto out;
	}

	caldata = nvmem_cell_read(calcell, &callen);
	if (IS_ERR(caldata)) {
		ret = PTR_ERR(caldata);
		goto out;
	}

	tmdev->chip->calibrate(tmdev, caldata, callen);

	kfree(caldata);
out:
	if (!IS_ERR(calcell))
		nvmem_cell_put(calcell);
	return ret;
}

static void sun8i_ths_reset_control_assert(void *data)
{
	reset_control_assert(data);
}

static int sun8i_ths_resource_init(struct ths_device *tmdev)
{
	struct device *dev = tmdev->dev;
	struct platform_device *pdev = to_platform_device(dev);
	void __iomem *base;
	int ret;

	base = devm_platform_ioremap_resource(pdev, 0);
	if (IS_ERR(base))
		return PTR_ERR(base);

	tmdev->regmap = devm_regmap_init_mmio(dev, base, &config);
	if (IS_ERR(tmdev->regmap))
		return PTR_ERR(tmdev->regmap);

	if (tmdev->chip->has_bus_clk_reset) {
		tmdev->reset = devm_reset_control_get(dev, NULL);
		if (IS_ERR(tmdev->reset))
			return PTR_ERR(tmdev->reset);

		ret = reset_control_deassert(tmdev->reset);
		if (ret)
			return ret;

		ret = devm_add_action_or_reset(dev, sun8i_ths_reset_control_assert,
					       tmdev->reset);
		if (ret)
			return ret;

		tmdev->bus_clk = devm_clk_get_enabled(&pdev->dev, "bus");
		if (IS_ERR(tmdev->bus_clk))
			return PTR_ERR(tmdev->bus_clk);
	}

	if (tmdev->chip->has_mod_clk) {
		tmdev->mod_clk = devm_clk_get_enabled(&pdev->dev, "mod");
		if (IS_ERR(tmdev->mod_clk))
			return PTR_ERR(tmdev->mod_clk);
	}

	ret = clk_set_rate(tmdev->mod_clk, 24000000);
	if (ret)
		return ret;

	ret = sun8i_ths_calibrate(tmdev);
	if (ret)
		return ret;

	return 0;
}

static int sun8i_h3_thermal_init(struct ths_device *tmdev)
{
	int val;

	/* average over 4 samples */
	regmap_write(tmdev->regmap, SUN8I_THS_MFC,
		     SUN50I_THS_FILTER_EN |
		     SUN50I_THS_FILTER_TYPE(1));
	/*
	 * clkin = 24MHz
	 * filter_samples = 4
	 * period = 0.25s
	 *
	 * x = period * clkin / 4096 / filter_samples - 1
	 *   = 365
	 */
	val = GENMASK(7 + tmdev->chip->sensor_num, 8);
	regmap_write(tmdev->regmap, SUN8I_THS_IC,
		     SUN50I_H6_THS_PC_TEMP_PERIOD(365) | val);
	/*
	 * T_acq = 20us
	 * clkin = 24MHz
	 *
	 * x = T_acq * clkin - 1
	 *   = 479
	 */
	regmap_write(tmdev->regmap, SUN8I_THS_CTRL0,
		     SUN8I_THS_CTRL0_T_ACQ0(479));
	val = GENMASK(tmdev->chip->sensor_num - 1, 0);
	regmap_write(tmdev->regmap, SUN8I_THS_CTRL2,
		     SUN8I_THS_CTRL2_T_ACQ1(479) | val);

	return 0;
}

/*
 * Without this undocumented value, the returned temperatures would
 * be higher than real ones by about 20C.
 */
#define SUN50I_H6_CTRL0_UNK 0x0000002f

static int sun50i_h6_thermal_init(struct ths_device *tmdev)
{
	int val;

	/*
	 * T_acq = 20us
	 * clkin = 24MHz
	 *
	 * x = T_acq * clkin - 1
	 *   = 479
	 */
	regmap_write(tmdev->regmap, SUN50I_THS_CTRL0,
		     SUN50I_H6_CTRL0_UNK | SUN50I_THS_CTRL0_T_ACQ(479));
	/* average over 4 samples */
	regmap_write(tmdev->regmap, SUN50I_H6_THS_MFC,
		     SUN50I_THS_FILTER_EN |
		     SUN50I_THS_FILTER_TYPE(1));
	/*
	 * clkin = 24MHz
	 * filter_samples = 4
	 * period = 0.25s
	 *
	 * x = period * clkin / 4096 / filter_samples - 1
	 *   = 365
	 */
	regmap_write(tmdev->regmap, SUN50I_H6_THS_PC,
		     SUN50I_H6_THS_PC_TEMP_PERIOD(365));
	/* enable sensor */
	val = GENMASK(tmdev->chip->sensor_num - 1, 0);
	regmap_write(tmdev->regmap, SUN50I_H6_THS_ENABLE, val);
	/* thermal data interrupt enable */
	val = GENMASK(tmdev->chip->sensor_num - 1, 0);
	regmap_write(tmdev->regmap, SUN50I_H6_THS_DIC, val);

	return 0;
}

static int sun8i_ths_register(struct ths_device *tmdev)
{
	int i;

	for (i = 0; i < tmdev->chip->sensor_num; i++) {
		tmdev->sensor[i].tmdev = tmdev;
		tmdev->sensor[i].id = i;
		tmdev->sensor[i].tzd =
			devm_thermal_of_zone_register(tmdev->dev,
						      i,
						      &tmdev->sensor[i],
						      &ths_ops);
		if (IS_ERR(tmdev->sensor[i].tzd))
			return PTR_ERR(tmdev->sensor[i].tzd);

		devm_thermal_add_hwmon_sysfs(tmdev->dev, tmdev->sensor[i].tzd);
	}

	return 0;
}

static int sun8i_ths_probe(struct platform_device *pdev)
{
	struct ths_device *tmdev;
	struct device *dev = &pdev->dev;
	int ret, irq;

	tmdev = devm_kzalloc(dev, sizeof(*tmdev), GFP_KERNEL);
	if (!tmdev)
		return -ENOMEM;

	tmdev->dev = dev;
	tmdev->chip = of_device_get_match_data(&pdev->dev);
	if (!tmdev->chip)
		return -EINVAL;

	ret = sun8i_ths_resource_init(tmdev);
	if (ret)
		return ret;

	irq = platform_get_irq(pdev, 0);
	if (irq < 0)
		return irq;

	ret = tmdev->chip->init(tmdev);
	if (ret)
		return ret;

	ret = sun8i_ths_register(tmdev);
	if (ret)
		return ret;

	/*
	 * Avoid entering the interrupt handler, the thermal device is not
	 * registered yet, we deffer the registration of the interrupt to
	 * the end.
	 */
	ret = devm_request_threaded_irq(dev, irq, NULL,
					sun8i_irq_thread,
					IRQF_ONESHOT, "ths", tmdev);
	if (ret)
		return ret;

	return 0;
}

static const struct ths_thermal_chip sun8i_a83t_ths = {
	.sensor_num = 3,
	.scale = 705,
	.offset = 191668,
	.temp_data_base = SUN8I_THS_TEMP_DATA,
	.calibrate = sun8i_h3_ths_calibrate,
	.init = sun8i_h3_thermal_init,
	.irq_ack = sun8i_h3_irq_ack,
	.calc_temp = sun8i_ths_calc_temp,
};

static const struct ths_thermal_chip sun8i_h3_ths = {
	.sensor_num = 1,
	.scale = 1211,
	.offset = 217000,
	.has_mod_clk = true,
	.has_bus_clk_reset = true,
	.temp_data_base = SUN8I_THS_TEMP_DATA,
	.calibrate = sun8i_h3_ths_calibrate,
	.init = sun8i_h3_thermal_init,
	.irq_ack = sun8i_h3_irq_ack,
	.calc_temp = sun8i_ths_calc_temp,
};

static const struct ths_thermal_chip sun8i_r40_ths = {
	.sensor_num = 2,
	.offset = 251086,
	.scale = 1130,
	.has_mod_clk = true,
	.has_bus_clk_reset = true,
	.temp_data_base = SUN8I_THS_TEMP_DATA,
	.calibrate = sun8i_h3_ths_calibrate,
	.init = sun8i_h3_thermal_init,
	.irq_ack = sun8i_h3_irq_ack,
	.calc_temp = sun8i_ths_calc_temp,
};

static const struct ths_thermal_chip sun50i_a64_ths = {
	.sensor_num = 3,
	.offset = 260890,
	.scale = 1170,
	.has_mod_clk = true,
	.has_bus_clk_reset = true,
	.temp_data_base = SUN8I_THS_TEMP_DATA,
	.calibrate = sun8i_h3_ths_calibrate,
	.init = sun8i_h3_thermal_init,
	.irq_ack = sun8i_h3_irq_ack,
	.calc_temp = sun8i_ths_calc_temp,
};

static const struct ths_thermal_chip sun50i_a100_ths = {
	.sensor_num = 3,
	.has_bus_clk_reset = true,
	.ft_deviation = 8000,
	.offset = 187744,
	.scale = 672,
	.temp_data_base = SUN50I_H6_THS_TEMP_DATA,
	.calibrate = sun50i_h6_ths_calibrate,
	.init = sun50i_h6_thermal_init,
	.irq_ack = sun50i_h6_irq_ack,
	.calc_temp = sun8i_ths_calc_temp,
};

static const struct ths_thermal_chip sun50i_h5_ths = {
	.sensor_num = 2,
	.has_mod_clk = true,
	.has_bus_clk_reset = true,
	.temp_data_base = SUN8I_THS_TEMP_DATA,
	.calibrate = sun8i_h3_ths_calibrate,
	.init = sun8i_h3_thermal_init,
	.irq_ack = sun8i_h3_irq_ack,
	.calc_temp = sun50i_h5_calc_temp,
};

static const struct ths_thermal_chip sun50i_h6_ths = {
	.sensor_num = 2,
	.has_bus_clk_reset = true,
	.ft_deviation = 7000,
	.offset = 187744,
	.scale = 672,
	.temp_data_base = SUN50I_H6_THS_TEMP_DATA,
	.calibrate = sun50i_h6_ths_calibrate,
	.init = sun50i_h6_thermal_init,
	.irq_ack = sun50i_h6_irq_ack,
	.calc_temp = sun8i_ths_calc_temp,
};

static const struct of_device_id of_ths_match[] = {
	{ .compatible = "allwinner,sun8i-a83t-ths", .data = &sun8i_a83t_ths },
	{ .compatible = "allwinner,sun8i-h3-ths", .data = &sun8i_h3_ths },
	{ .compatible = "allwinner,sun8i-r40-ths", .data = &sun8i_r40_ths },
	{ .compatible = "allwinner,sun50i-a64-ths", .data = &sun50i_a64_ths },
	{ .compatible = "allwinner,sun50i-a100-ths", .data = &sun50i_a100_ths },
	{ .compatible = "allwinner,sun50i-h5-ths", .data = &sun50i_h5_ths },
	{ .compatible = "allwinner,sun50i-h6-ths", .data = &sun50i_h6_ths },
	{ /* sentinel */ },
};
MODULE_DEVICE_TABLE(of, of_ths_match);

static struct platform_driver ths_driver = {
	.probe = sun8i_ths_probe,
	.driver = {
		.name = "sun8i-thermal",
		.of_match_table = of_ths_match,
	},
};
module_platform_driver(ths_driver);

MODULE_DESCRIPTION("Thermal sensor driver for Allwinner SOC");
MODULE_LICENSE("GPL v2");