1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * Thermal sensor driver for Allwinner SOC
4  * Copyright (C) 2019 Yangtao Li
5  *
6  * Based on the work of Icenowy Zheng <icenowy@aosc.io>
7  * Based on the work of Ondrej Jirman <megous@megous.com>
8  * Based on the work of Josef Gajdusek <atx@atx.name>
9  */
10 
11 #include <linux/bitmap.h>
12 #include <linux/clk.h>
13 #include <linux/device.h>
14 #include <linux/interrupt.h>
15 #include <linux/module.h>
16 #include <linux/nvmem-consumer.h>
17 #include <linux/of_device.h>
18 #include <linux/platform_device.h>
19 #include <linux/regmap.h>
20 #include <linux/reset.h>
21 #include <linux/slab.h>
22 #include <linux/thermal.h>
23 
24 #include "thermal_hwmon.h"
25 
26 #define MAX_SENSOR_NUM	4
27 
28 #define FT_TEMP_MASK				GENMASK(11, 0)
29 #define TEMP_CALIB_MASK				GENMASK(11, 0)
30 #define CALIBRATE_DEFAULT			0x800
31 
32 #define SUN8I_THS_CTRL0				0x00
33 #define SUN8I_THS_CTRL2				0x40
34 #define SUN8I_THS_IC				0x44
35 #define SUN8I_THS_IS				0x48
36 #define SUN8I_THS_MFC				0x70
37 #define SUN8I_THS_TEMP_CALIB			0x74
38 #define SUN8I_THS_TEMP_DATA			0x80
39 
40 #define SUN50I_THS_CTRL0			0x00
41 #define SUN50I_H6_THS_ENABLE			0x04
42 #define SUN50I_H6_THS_PC			0x08
43 #define SUN50I_H6_THS_DIC			0x10
44 #define SUN50I_H6_THS_DIS			0x20
45 #define SUN50I_H6_THS_MFC			0x30
46 #define SUN50I_H6_THS_TEMP_CALIB		0xa0
47 #define SUN50I_H6_THS_TEMP_DATA			0xc0
48 
49 #define SUN8I_THS_CTRL0_T_ACQ0(x)		(GENMASK(15, 0) & (x))
50 #define SUN8I_THS_CTRL2_T_ACQ1(x)		((GENMASK(15, 0) & (x)) << 16)
51 #define SUN8I_THS_DATA_IRQ_STS(x)		BIT(x + 8)
52 
53 #define SUN50I_THS_CTRL0_T_ACQ(x)		((GENMASK(15, 0) & (x)) << 16)
54 #define SUN50I_THS_FILTER_EN			BIT(2)
55 #define SUN50I_THS_FILTER_TYPE(x)		(GENMASK(1, 0) & (x))
56 #define SUN50I_H6_THS_PC_TEMP_PERIOD(x)		((GENMASK(19, 0) & (x)) << 12)
57 #define SUN50I_H6_THS_DATA_IRQ_STS(x)		BIT(x)
58 
59 /* millidegree celsius */
60 
61 struct tsensor {
62 	struct ths_device		*tmdev;
63 	struct thermal_zone_device	*tzd;
64 	int				id;
65 };
66 
67 struct ths_thermal_chip {
68 	bool            has_mod_clk;
69 	bool            has_bus_clk_reset;
70 	int		sensor_num;
71 	int		offset;
72 	int		scale;
73 	int		ft_deviation;
74 	int		temp_data_base;
75 	int		(*calibrate)(struct ths_device *tmdev,
76 				     u16 *caldata, int callen);
77 	int		(*init)(struct ths_device *tmdev);
78 	unsigned long	(*irq_ack)(struct ths_device *tmdev);
79 	int		(*calc_temp)(struct ths_device *tmdev,
80 				     int id, int reg);
81 };
82 
83 struct ths_device {
84 	const struct ths_thermal_chip		*chip;
85 	struct device				*dev;
86 	struct regmap				*regmap;
87 	struct reset_control			*reset;
88 	struct clk				*bus_clk;
89 	struct clk                              *mod_clk;
90 	struct tsensor				sensor[MAX_SENSOR_NUM];
91 };
92 
93 /* Temp Unit: millidegree Celsius */
94 static int sun8i_ths_calc_temp(struct ths_device *tmdev,
95 			       int id, int reg)
96 {
97 	return tmdev->chip->offset - (reg * tmdev->chip->scale / 10);
98 }
99 
100 static int sun50i_h5_calc_temp(struct ths_device *tmdev,
101 			       int id, int reg)
102 {
103 	if (reg >= 0x500)
104 		return -1191 * reg / 10 + 223000;
105 	else if (!id)
106 		return -1452 * reg / 10 + 259000;
107 	else
108 		return -1590 * reg / 10 + 276000;
109 }
110 
111 static int sun8i_ths_get_temp(struct thermal_zone_device *tz, int *temp)
112 {
113 	struct tsensor *s = tz->devdata;
114 	struct ths_device *tmdev = s->tmdev;
115 	int val = 0;
116 
117 	regmap_read(tmdev->regmap, tmdev->chip->temp_data_base +
118 		    0x4 * s->id, &val);
119 
120 	/* ths have no data yet */
121 	if (!val)
122 		return -EAGAIN;
123 
124 	*temp = tmdev->chip->calc_temp(tmdev, s->id, val);
125 	/*
126 	 * According to the original sdk, there are some platforms(rarely)
127 	 * that add a fixed offset value after calculating the temperature
128 	 * value. We can't simply put it on the formula for calculating the
129 	 * temperature above, because the formula for calculating the
130 	 * temperature above is also used when the sensor is calibrated. If
131 	 * do this, the correct calibration formula is hard to know.
132 	 */
133 	*temp += tmdev->chip->ft_deviation;
134 
135 	return 0;
136 }
137 
138 static const struct thermal_zone_device_ops ths_ops = {
139 	.get_temp = sun8i_ths_get_temp,
140 };
141 
142 static const struct regmap_config config = {
143 	.reg_bits = 32,
144 	.val_bits = 32,
145 	.reg_stride = 4,
146 	.fast_io = true,
147 	.max_register = 0xfc,
148 };
149 
150 static unsigned long sun8i_h3_irq_ack(struct ths_device *tmdev)
151 {
152 	unsigned long irq_bitmap = 0;
153 	int i, state;
154 
155 	regmap_read(tmdev->regmap, SUN8I_THS_IS, &state);
156 
157 	for (i = 0; i < tmdev->chip->sensor_num; i++) {
158 		if (state & SUN8I_THS_DATA_IRQ_STS(i)) {
159 			regmap_write(tmdev->regmap, SUN8I_THS_IS,
160 				     SUN8I_THS_DATA_IRQ_STS(i));
161 			bitmap_set(&irq_bitmap, i, 1);
162 		}
163 	}
164 
165 	return irq_bitmap;
166 }
167 
168 static unsigned long sun50i_h6_irq_ack(struct ths_device *tmdev)
169 {
170 	unsigned long irq_bitmap = 0;
171 	int i, state;
172 
173 	regmap_read(tmdev->regmap, SUN50I_H6_THS_DIS, &state);
174 
175 	for (i = 0; i < tmdev->chip->sensor_num; i++) {
176 		if (state & SUN50I_H6_THS_DATA_IRQ_STS(i)) {
177 			regmap_write(tmdev->regmap, SUN50I_H6_THS_DIS,
178 				     SUN50I_H6_THS_DATA_IRQ_STS(i));
179 			bitmap_set(&irq_bitmap, i, 1);
180 		}
181 	}
182 
183 	return irq_bitmap;
184 }
185 
186 static irqreturn_t sun8i_irq_thread(int irq, void *data)
187 {
188 	struct ths_device *tmdev = data;
189 	unsigned long irq_bitmap = tmdev->chip->irq_ack(tmdev);
190 	int i;
191 
192 	for_each_set_bit(i, &irq_bitmap, tmdev->chip->sensor_num) {
193 		thermal_zone_device_update(tmdev->sensor[i].tzd,
194 					   THERMAL_EVENT_UNSPECIFIED);
195 	}
196 
197 	return IRQ_HANDLED;
198 }
199 
200 static int sun8i_h3_ths_calibrate(struct ths_device *tmdev,
201 				  u16 *caldata, int callen)
202 {
203 	int i;
204 
205 	if (!caldata[0] || callen < 2 * tmdev->chip->sensor_num)
206 		return -EINVAL;
207 
208 	for (i = 0; i < tmdev->chip->sensor_num; i++) {
209 		int offset = (i % 2) << 4;
210 
211 		regmap_update_bits(tmdev->regmap,
212 				   SUN8I_THS_TEMP_CALIB + (4 * (i >> 1)),
213 				   TEMP_CALIB_MASK << offset,
214 				   caldata[i] << offset);
215 	}
216 
217 	return 0;
218 }
219 
220 static int sun50i_h6_ths_calibrate(struct ths_device *tmdev,
221 				   u16 *caldata, int callen)
222 {
223 	struct device *dev = tmdev->dev;
224 	int i, ft_temp;
225 
226 	if (!caldata[0] || callen < 2 + 2 * tmdev->chip->sensor_num)
227 		return -EINVAL;
228 
229 	/*
230 	 * efuse layout:
231 	 *
232 	 *	0   11  16	 32
233 	 *	+-------+-------+-------+
234 	 *	|temp|  |sensor0|sensor1|
235 	 *	+-------+-------+-------+
236 	 *
237 	 * The calibration data on the H6 is the ambient temperature and
238 	 * sensor values that are filled during the factory test stage.
239 	 *
240 	 * The unit of stored FT temperature is 0.1 degree celsius.
241 	 *
242 	 * We need to calculate a delta between measured and caluclated
243 	 * register values and this will become a calibration offset.
244 	 */
245 	ft_temp = (caldata[0] & FT_TEMP_MASK) * 100;
246 
247 	for (i = 0; i < tmdev->chip->sensor_num; i++) {
248 		int sensor_reg = caldata[i + 1] & TEMP_CALIB_MASK;
249 		int cdata, offset;
250 		int sensor_temp = tmdev->chip->calc_temp(tmdev, i, sensor_reg);
251 
252 		/*
253 		 * Calibration data is CALIBRATE_DEFAULT - (calculated
254 		 * temperature from sensor reading at factory temperature
255 		 * minus actual factory temperature) * 14.88 (scale from
256 		 * temperature to register values)
257 		 */
258 		cdata = CALIBRATE_DEFAULT -
259 			((sensor_temp - ft_temp) * 10 / tmdev->chip->scale);
260 		if (cdata & ~TEMP_CALIB_MASK) {
261 			/*
262 			 * Calibration value more than 12-bit, but calibration
263 			 * register is 12-bit. In this case, ths hardware can
264 			 * still work without calibration, although the data
265 			 * won't be so accurate.
266 			 */
267 			dev_warn(dev, "sensor%d is not calibrated.\n", i);
268 			continue;
269 		}
270 
271 		offset = (i % 2) * 16;
272 		regmap_update_bits(tmdev->regmap,
273 				   SUN50I_H6_THS_TEMP_CALIB + (i / 2 * 4),
274 				   TEMP_CALIB_MASK << offset,
275 				   cdata << offset);
276 	}
277 
278 	return 0;
279 }
280 
281 static int sun8i_ths_calibrate(struct ths_device *tmdev)
282 {
283 	struct nvmem_cell *calcell;
284 	struct device *dev = tmdev->dev;
285 	u16 *caldata;
286 	size_t callen;
287 	int ret = 0;
288 
289 	calcell = devm_nvmem_cell_get(dev, "calibration");
290 	if (IS_ERR(calcell)) {
291 		if (PTR_ERR(calcell) == -EPROBE_DEFER)
292 			return -EPROBE_DEFER;
293 		/*
294 		 * Even if the external calibration data stored in sid is
295 		 * not accessible, the THS hardware can still work, although
296 		 * the data won't be so accurate.
297 		 *
298 		 * The default value of calibration register is 0x800 for
299 		 * every sensor, and the calibration value is usually 0x7xx
300 		 * or 0x8xx, so they won't be away from the default value
301 		 * for a lot.
302 		 *
303 		 * So here we do not return error if the calibration data is
304 		 * not available, except the probe needs deferring.
305 		 */
306 		goto out;
307 	}
308 
309 	caldata = nvmem_cell_read(calcell, &callen);
310 	if (IS_ERR(caldata)) {
311 		ret = PTR_ERR(caldata);
312 		goto out;
313 	}
314 
315 	tmdev->chip->calibrate(tmdev, caldata, callen);
316 
317 	kfree(caldata);
318 out:
319 	return ret;
320 }
321 
322 static int sun8i_ths_resource_init(struct ths_device *tmdev)
323 {
324 	struct device *dev = tmdev->dev;
325 	struct platform_device *pdev = to_platform_device(dev);
326 	void __iomem *base;
327 	int ret;
328 
329 	base = devm_platform_ioremap_resource(pdev, 0);
330 	if (IS_ERR(base))
331 		return PTR_ERR(base);
332 
333 	tmdev->regmap = devm_regmap_init_mmio(dev, base, &config);
334 	if (IS_ERR(tmdev->regmap))
335 		return PTR_ERR(tmdev->regmap);
336 
337 	if (tmdev->chip->has_bus_clk_reset) {
338 		tmdev->reset = devm_reset_control_get(dev, NULL);
339 		if (IS_ERR(tmdev->reset))
340 			return PTR_ERR(tmdev->reset);
341 
342 		tmdev->bus_clk = devm_clk_get(&pdev->dev, "bus");
343 		if (IS_ERR(tmdev->bus_clk))
344 			return PTR_ERR(tmdev->bus_clk);
345 	}
346 
347 	if (tmdev->chip->has_mod_clk) {
348 		tmdev->mod_clk = devm_clk_get(&pdev->dev, "mod");
349 		if (IS_ERR(tmdev->mod_clk))
350 			return PTR_ERR(tmdev->mod_clk);
351 	}
352 
353 	ret = reset_control_deassert(tmdev->reset);
354 	if (ret)
355 		return ret;
356 
357 	ret = clk_prepare_enable(tmdev->bus_clk);
358 	if (ret)
359 		goto assert_reset;
360 
361 	ret = clk_set_rate(tmdev->mod_clk, 24000000);
362 	if (ret)
363 		goto bus_disable;
364 
365 	ret = clk_prepare_enable(tmdev->mod_clk);
366 	if (ret)
367 		goto bus_disable;
368 
369 	ret = sun8i_ths_calibrate(tmdev);
370 	if (ret)
371 		goto mod_disable;
372 
373 	return 0;
374 
375 mod_disable:
376 	clk_disable_unprepare(tmdev->mod_clk);
377 bus_disable:
378 	clk_disable_unprepare(tmdev->bus_clk);
379 assert_reset:
380 	reset_control_assert(tmdev->reset);
381 
382 	return ret;
383 }
384 
385 static int sun8i_h3_thermal_init(struct ths_device *tmdev)
386 {
387 	int val;
388 
389 	/* average over 4 samples */
390 	regmap_write(tmdev->regmap, SUN8I_THS_MFC,
391 		     SUN50I_THS_FILTER_EN |
392 		     SUN50I_THS_FILTER_TYPE(1));
393 	/*
394 	 * clkin = 24MHz
395 	 * filter_samples = 4
396 	 * period = 0.25s
397 	 *
398 	 * x = period * clkin / 4096 / filter_samples - 1
399 	 *   = 365
400 	 */
401 	val = GENMASK(7 + tmdev->chip->sensor_num, 8);
402 	regmap_write(tmdev->regmap, SUN8I_THS_IC,
403 		     SUN50I_H6_THS_PC_TEMP_PERIOD(365) | val);
404 	/*
405 	 * T_acq = 20us
406 	 * clkin = 24MHz
407 	 *
408 	 * x = T_acq * clkin - 1
409 	 *   = 479
410 	 */
411 	regmap_write(tmdev->regmap, SUN8I_THS_CTRL0,
412 		     SUN8I_THS_CTRL0_T_ACQ0(479));
413 	val = GENMASK(tmdev->chip->sensor_num - 1, 0);
414 	regmap_write(tmdev->regmap, SUN8I_THS_CTRL2,
415 		     SUN8I_THS_CTRL2_T_ACQ1(479) | val);
416 
417 	return 0;
418 }
419 
420 /*
421  * Without this undocumented value, the returned temperatures would
422  * be higher than real ones by about 20C.
423  */
424 #define SUN50I_H6_CTRL0_UNK 0x0000002f
425 
426 static int sun50i_h6_thermal_init(struct ths_device *tmdev)
427 {
428 	int val;
429 
430 	/*
431 	 * T_acq = 20us
432 	 * clkin = 24MHz
433 	 *
434 	 * x = T_acq * clkin - 1
435 	 *   = 479
436 	 */
437 	regmap_write(tmdev->regmap, SUN50I_THS_CTRL0,
438 		     SUN50I_H6_CTRL0_UNK | SUN50I_THS_CTRL0_T_ACQ(479));
439 	/* average over 4 samples */
440 	regmap_write(tmdev->regmap, SUN50I_H6_THS_MFC,
441 		     SUN50I_THS_FILTER_EN |
442 		     SUN50I_THS_FILTER_TYPE(1));
443 	/*
444 	 * clkin = 24MHz
445 	 * filter_samples = 4
446 	 * period = 0.25s
447 	 *
448 	 * x = period * clkin / 4096 / filter_samples - 1
449 	 *   = 365
450 	 */
451 	regmap_write(tmdev->regmap, SUN50I_H6_THS_PC,
452 		     SUN50I_H6_THS_PC_TEMP_PERIOD(365));
453 	/* enable sensor */
454 	val = GENMASK(tmdev->chip->sensor_num - 1, 0);
455 	regmap_write(tmdev->regmap, SUN50I_H6_THS_ENABLE, val);
456 	/* thermal data interrupt enable */
457 	val = GENMASK(tmdev->chip->sensor_num - 1, 0);
458 	regmap_write(tmdev->regmap, SUN50I_H6_THS_DIC, val);
459 
460 	return 0;
461 }
462 
463 static int sun8i_ths_register(struct ths_device *tmdev)
464 {
465 	int i;
466 
467 	for (i = 0; i < tmdev->chip->sensor_num; i++) {
468 		tmdev->sensor[i].tmdev = tmdev;
469 		tmdev->sensor[i].id = i;
470 		tmdev->sensor[i].tzd =
471 			devm_thermal_of_zone_register(tmdev->dev,
472 						      i,
473 						      &tmdev->sensor[i],
474 						      &ths_ops);
475 		if (IS_ERR(tmdev->sensor[i].tzd))
476 			return PTR_ERR(tmdev->sensor[i].tzd);
477 
478 		if (devm_thermal_add_hwmon_sysfs(tmdev->sensor[i].tzd))
479 			dev_warn(tmdev->dev,
480 				 "Failed to add hwmon sysfs attributes\n");
481 	}
482 
483 	return 0;
484 }
485 
486 static int sun8i_ths_probe(struct platform_device *pdev)
487 {
488 	struct ths_device *tmdev;
489 	struct device *dev = &pdev->dev;
490 	int ret, irq;
491 
492 	tmdev = devm_kzalloc(dev, sizeof(*tmdev), GFP_KERNEL);
493 	if (!tmdev)
494 		return -ENOMEM;
495 
496 	tmdev->dev = dev;
497 	tmdev->chip = of_device_get_match_data(&pdev->dev);
498 	if (!tmdev->chip)
499 		return -EINVAL;
500 
501 	platform_set_drvdata(pdev, tmdev);
502 
503 	ret = sun8i_ths_resource_init(tmdev);
504 	if (ret)
505 		return ret;
506 
507 	irq = platform_get_irq(pdev, 0);
508 	if (irq < 0)
509 		return irq;
510 
511 	ret = tmdev->chip->init(tmdev);
512 	if (ret)
513 		return ret;
514 
515 	ret = sun8i_ths_register(tmdev);
516 	if (ret)
517 		return ret;
518 
519 	/*
520 	 * Avoid entering the interrupt handler, the thermal device is not
521 	 * registered yet, we deffer the registration of the interrupt to
522 	 * the end.
523 	 */
524 	ret = devm_request_threaded_irq(dev, irq, NULL,
525 					sun8i_irq_thread,
526 					IRQF_ONESHOT, "ths", tmdev);
527 	if (ret)
528 		return ret;
529 
530 	return 0;
531 }
532 
533 static int sun8i_ths_remove(struct platform_device *pdev)
534 {
535 	struct ths_device *tmdev = platform_get_drvdata(pdev);
536 
537 	clk_disable_unprepare(tmdev->mod_clk);
538 	clk_disable_unprepare(tmdev->bus_clk);
539 	reset_control_assert(tmdev->reset);
540 
541 	return 0;
542 }
543 
544 static const struct ths_thermal_chip sun8i_a83t_ths = {
545 	.sensor_num = 3,
546 	.scale = 705,
547 	.offset = 191668,
548 	.temp_data_base = SUN8I_THS_TEMP_DATA,
549 	.calibrate = sun8i_h3_ths_calibrate,
550 	.init = sun8i_h3_thermal_init,
551 	.irq_ack = sun8i_h3_irq_ack,
552 	.calc_temp = sun8i_ths_calc_temp,
553 };
554 
555 static const struct ths_thermal_chip sun8i_h3_ths = {
556 	.sensor_num = 1,
557 	.scale = 1211,
558 	.offset = 217000,
559 	.has_mod_clk = true,
560 	.has_bus_clk_reset = true,
561 	.temp_data_base = SUN8I_THS_TEMP_DATA,
562 	.calibrate = sun8i_h3_ths_calibrate,
563 	.init = sun8i_h3_thermal_init,
564 	.irq_ack = sun8i_h3_irq_ack,
565 	.calc_temp = sun8i_ths_calc_temp,
566 };
567 
568 static const struct ths_thermal_chip sun8i_r40_ths = {
569 	.sensor_num = 2,
570 	.offset = 251086,
571 	.scale = 1130,
572 	.has_mod_clk = true,
573 	.has_bus_clk_reset = true,
574 	.temp_data_base = SUN8I_THS_TEMP_DATA,
575 	.calibrate = sun8i_h3_ths_calibrate,
576 	.init = sun8i_h3_thermal_init,
577 	.irq_ack = sun8i_h3_irq_ack,
578 	.calc_temp = sun8i_ths_calc_temp,
579 };
580 
581 static const struct ths_thermal_chip sun50i_a64_ths = {
582 	.sensor_num = 3,
583 	.offset = 260890,
584 	.scale = 1170,
585 	.has_mod_clk = true,
586 	.has_bus_clk_reset = true,
587 	.temp_data_base = SUN8I_THS_TEMP_DATA,
588 	.calibrate = sun8i_h3_ths_calibrate,
589 	.init = sun8i_h3_thermal_init,
590 	.irq_ack = sun8i_h3_irq_ack,
591 	.calc_temp = sun8i_ths_calc_temp,
592 };
593 
594 static const struct ths_thermal_chip sun50i_a100_ths = {
595 	.sensor_num = 3,
596 	.has_bus_clk_reset = true,
597 	.ft_deviation = 8000,
598 	.offset = 187744,
599 	.scale = 672,
600 	.temp_data_base = SUN50I_H6_THS_TEMP_DATA,
601 	.calibrate = sun50i_h6_ths_calibrate,
602 	.init = sun50i_h6_thermal_init,
603 	.irq_ack = sun50i_h6_irq_ack,
604 	.calc_temp = sun8i_ths_calc_temp,
605 };
606 
607 static const struct ths_thermal_chip sun50i_h5_ths = {
608 	.sensor_num = 2,
609 	.has_mod_clk = true,
610 	.has_bus_clk_reset = true,
611 	.temp_data_base = SUN8I_THS_TEMP_DATA,
612 	.calibrate = sun8i_h3_ths_calibrate,
613 	.init = sun8i_h3_thermal_init,
614 	.irq_ack = sun8i_h3_irq_ack,
615 	.calc_temp = sun50i_h5_calc_temp,
616 };
617 
618 static const struct ths_thermal_chip sun50i_h6_ths = {
619 	.sensor_num = 2,
620 	.has_bus_clk_reset = true,
621 	.ft_deviation = 7000,
622 	.offset = 187744,
623 	.scale = 672,
624 	.temp_data_base = SUN50I_H6_THS_TEMP_DATA,
625 	.calibrate = sun50i_h6_ths_calibrate,
626 	.init = sun50i_h6_thermal_init,
627 	.irq_ack = sun50i_h6_irq_ack,
628 	.calc_temp = sun8i_ths_calc_temp,
629 };
630 
631 static const struct of_device_id of_ths_match[] = {
632 	{ .compatible = "allwinner,sun8i-a83t-ths", .data = &sun8i_a83t_ths },
633 	{ .compatible = "allwinner,sun8i-h3-ths", .data = &sun8i_h3_ths },
634 	{ .compatible = "allwinner,sun8i-r40-ths", .data = &sun8i_r40_ths },
635 	{ .compatible = "allwinner,sun50i-a64-ths", .data = &sun50i_a64_ths },
636 	{ .compatible = "allwinner,sun50i-a100-ths", .data = &sun50i_a100_ths },
637 	{ .compatible = "allwinner,sun50i-h5-ths", .data = &sun50i_h5_ths },
638 	{ .compatible = "allwinner,sun50i-h6-ths", .data = &sun50i_h6_ths },
639 	{ /* sentinel */ },
640 };
641 MODULE_DEVICE_TABLE(of, of_ths_match);
642 
643 static struct platform_driver ths_driver = {
644 	.probe = sun8i_ths_probe,
645 	.remove = sun8i_ths_remove,
646 	.driver = {
647 		.name = "sun8i-thermal",
648 		.of_match_table = of_ths_match,
649 	},
650 };
651 module_platform_driver(ths_driver);
652 
653 MODULE_DESCRIPTION("Thermal sensor driver for Allwinner SOC");
654 MODULE_LICENSE("GPL v2");
655