1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  *  R-Car Gen3 THS thermal sensor driver
4  *  Based on rcar_thermal.c and work from Hien Dang and Khiem Nguyen.
5  *
6  * Copyright (C) 2016 Renesas Electronics Corporation.
7  * Copyright (C) 2016 Sang Engineering
8  */
9 #include <linux/delay.h>
10 #include <linux/err.h>
11 #include <linux/interrupt.h>
12 #include <linux/io.h>
13 #include <linux/module.h>
14 #include <linux/of.h>
15 #include <linux/platform_device.h>
16 #include <linux/pm_runtime.h>
17 #include <linux/thermal.h>
18 
19 #include "thermal_hwmon.h"
20 
21 /* Register offsets */
22 #define REG_GEN3_IRQSTR		0x04
23 #define REG_GEN3_IRQMSK		0x08
24 #define REG_GEN3_IRQCTL		0x0C
25 #define REG_GEN3_IRQEN		0x10
26 #define REG_GEN3_IRQTEMP1	0x14
27 #define REG_GEN3_IRQTEMP2	0x18
28 #define REG_GEN3_IRQTEMP3	0x1C
29 #define REG_GEN3_THCTR		0x20
30 #define REG_GEN3_TEMP		0x28
31 #define REG_GEN3_THCODE1	0x50
32 #define REG_GEN3_THCODE2	0x54
33 #define REG_GEN3_THCODE3	0x58
34 #define REG_GEN3_PTAT1		0x5c
35 #define REG_GEN3_PTAT2		0x60
36 #define REG_GEN3_PTAT3		0x64
37 #define REG_GEN3_THSCP		0x68
38 #define REG_GEN4_THSFMON00	0x180
39 #define REG_GEN4_THSFMON01	0x184
40 #define REG_GEN4_THSFMON02	0x188
41 #define REG_GEN4_THSFMON15	0x1BC
42 #define REG_GEN4_THSFMON16	0x1C0
43 #define REG_GEN4_THSFMON17	0x1C4
44 
45 /* IRQ{STR,MSK,EN} bits */
46 #define IRQ_TEMP1		BIT(0)
47 #define IRQ_TEMP2		BIT(1)
48 #define IRQ_TEMP3		BIT(2)
49 #define IRQ_TEMPD1		BIT(3)
50 #define IRQ_TEMPD2		BIT(4)
51 #define IRQ_TEMPD3		BIT(5)
52 
53 /* THCTR bits */
54 #define THCTR_PONM	BIT(6)
55 #define THCTR_THSST	BIT(0)
56 
57 /* THSCP bits */
58 #define THSCP_COR_PARA_VLD	(BIT(15) | BIT(14))
59 
60 #define CTEMP_MASK	0xFFF
61 
62 #define MCELSIUS(temp)	((temp) * 1000)
63 #define GEN3_FUSE_MASK	0xFFF
64 #define GEN4_FUSE_MASK	0xFFF
65 
66 #define TSC_MAX_NUM	5
67 
68 /* Structure for thermal temperature calculation */
69 struct equation_coefs {
70 	int a1;
71 	int b1;
72 	int a2;
73 	int b2;
74 };
75 
76 struct rcar_gen3_thermal_priv;
77 
78 struct rcar_thermal_info {
79 	int ths_tj_1;
80 	void (*read_fuses)(struct rcar_gen3_thermal_priv *priv);
81 };
82 
83 struct rcar_gen3_thermal_tsc {
84 	void __iomem *base;
85 	struct thermal_zone_device *zone;
86 	struct equation_coefs coef;
87 	int tj_t;
88 	int thcode[3];
89 };
90 
91 struct rcar_gen3_thermal_priv {
92 	struct rcar_gen3_thermal_tsc *tscs[TSC_MAX_NUM];
93 	struct thermal_zone_device_ops ops;
94 	unsigned int num_tscs;
95 	int ptat[3];
96 	const struct rcar_thermal_info *info;
97 };
98 
99 static inline u32 rcar_gen3_thermal_read(struct rcar_gen3_thermal_tsc *tsc,
100 					 u32 reg)
101 {
102 	return ioread32(tsc->base + reg);
103 }
104 
105 static inline void rcar_gen3_thermal_write(struct rcar_gen3_thermal_tsc *tsc,
106 					   u32 reg, u32 data)
107 {
108 	iowrite32(data, tsc->base + reg);
109 }
110 
111 /*
112  * Linear approximation for temperature
113  *
114  * [reg] = [temp] * a + b => [temp] = ([reg] - b) / a
115  *
116  * The constants a and b are calculated using two triplets of int values PTAT
117  * and THCODE. PTAT and THCODE can either be read from hardware or use hard
118  * coded values from driver. The formula to calculate a and b are taken from
119  * BSP and sparsely documented and understood.
120  *
121  * Examining the linear formula and the formula used to calculate constants a
122  * and b while knowing that the span for PTAT and THCODE values are between
123  * 0x000 and 0xfff the largest integer possible is 0xfff * 0xfff == 0xffe001.
124  * Integer also needs to be signed so that leaves 7 bits for binary
125  * fixed point scaling.
126  */
127 
128 #define FIXPT_SHIFT 7
129 #define FIXPT_INT(_x) ((_x) << FIXPT_SHIFT)
130 #define INT_FIXPT(_x) ((_x) >> FIXPT_SHIFT)
131 #define FIXPT_DIV(_a, _b) DIV_ROUND_CLOSEST(((_a) << FIXPT_SHIFT), (_b))
132 #define FIXPT_TO_MCELSIUS(_x) ((_x) * 1000 >> FIXPT_SHIFT)
133 
134 #define RCAR3_THERMAL_GRAN 500 /* mili Celsius */
135 
136 /* no idea where these constants come from */
137 #define TJ_3 -41
138 
139 static void rcar_gen3_thermal_calc_coefs(struct rcar_gen3_thermal_priv *priv,
140 					 struct rcar_gen3_thermal_tsc *tsc,
141 					 int ths_tj_1)
142 {
143 	/* TODO: Find documentation and document constant calculation formula */
144 
145 	/*
146 	 * Division is not scaled in BSP and if scaled it might overflow
147 	 * the dividend (4095 * 4095 << 14 > INT_MAX) so keep it unscaled
148 	 */
149 	tsc->tj_t = (FIXPT_INT((priv->ptat[1] - priv->ptat[2]) * (ths_tj_1 - TJ_3))
150 		     / (priv->ptat[0] - priv->ptat[2])) + FIXPT_INT(TJ_3);
151 
152 	tsc->coef.a1 = FIXPT_DIV(FIXPT_INT(tsc->thcode[1] - tsc->thcode[2]),
153 				 tsc->tj_t - FIXPT_INT(TJ_3));
154 	tsc->coef.b1 = FIXPT_INT(tsc->thcode[2]) - tsc->coef.a1 * TJ_3;
155 
156 	tsc->coef.a2 = FIXPT_DIV(FIXPT_INT(tsc->thcode[1] - tsc->thcode[0]),
157 				 tsc->tj_t - FIXPT_INT(ths_tj_1));
158 	tsc->coef.b2 = FIXPT_INT(tsc->thcode[0]) - tsc->coef.a2 * ths_tj_1;
159 }
160 
161 static int rcar_gen3_thermal_round(int temp)
162 {
163 	int result, round_offs;
164 
165 	round_offs = temp >= 0 ? RCAR3_THERMAL_GRAN / 2 :
166 		-RCAR3_THERMAL_GRAN / 2;
167 	result = (temp + round_offs) / RCAR3_THERMAL_GRAN;
168 	return result * RCAR3_THERMAL_GRAN;
169 }
170 
171 static int rcar_gen3_thermal_get_temp(struct thermal_zone_device *tz, int *temp)
172 {
173 	struct rcar_gen3_thermal_tsc *tsc = thermal_zone_device_priv(tz);
174 	int mcelsius, val;
175 	int reg;
176 
177 	/* Read register and convert to mili Celsius */
178 	reg = rcar_gen3_thermal_read(tsc, REG_GEN3_TEMP) & CTEMP_MASK;
179 
180 	if (reg <= tsc->thcode[1])
181 		val = FIXPT_DIV(FIXPT_INT(reg) - tsc->coef.b1,
182 				tsc->coef.a1);
183 	else
184 		val = FIXPT_DIV(FIXPT_INT(reg) - tsc->coef.b2,
185 				tsc->coef.a2);
186 	mcelsius = FIXPT_TO_MCELSIUS(val);
187 
188 	/* Guaranteed operating range is -40C to 125C. */
189 
190 	/* Round value to device granularity setting */
191 	*temp = rcar_gen3_thermal_round(mcelsius);
192 
193 	return 0;
194 }
195 
196 static int rcar_gen3_thermal_mcelsius_to_temp(struct rcar_gen3_thermal_tsc *tsc,
197 					      int mcelsius)
198 {
199 	int celsius, val;
200 
201 	celsius = DIV_ROUND_CLOSEST(mcelsius, 1000);
202 	if (celsius <= INT_FIXPT(tsc->tj_t))
203 		val = celsius * tsc->coef.a1 + tsc->coef.b1;
204 	else
205 		val = celsius * tsc->coef.a2 + tsc->coef.b2;
206 
207 	return INT_FIXPT(val);
208 }
209 
210 static int rcar_gen3_thermal_set_trips(struct thermal_zone_device *tz, int low, int high)
211 {
212 	struct rcar_gen3_thermal_tsc *tsc = thermal_zone_device_priv(tz);
213 	u32 irqmsk = 0;
214 
215 	if (low != -INT_MAX) {
216 		irqmsk |= IRQ_TEMPD1;
217 		rcar_gen3_thermal_write(tsc, REG_GEN3_IRQTEMP1,
218 					rcar_gen3_thermal_mcelsius_to_temp(tsc, low));
219 	}
220 
221 	if (high != INT_MAX) {
222 		irqmsk |= IRQ_TEMP2;
223 		rcar_gen3_thermal_write(tsc, REG_GEN3_IRQTEMP2,
224 					rcar_gen3_thermal_mcelsius_to_temp(tsc, high));
225 	}
226 
227 	rcar_gen3_thermal_write(tsc, REG_GEN3_IRQMSK, irqmsk);
228 
229 	return 0;
230 }
231 
232 static const struct thermal_zone_device_ops rcar_gen3_tz_of_ops = {
233 	.get_temp	= rcar_gen3_thermal_get_temp,
234 	.set_trips	= rcar_gen3_thermal_set_trips,
235 };
236 
237 static irqreturn_t rcar_gen3_thermal_irq(int irq, void *data)
238 {
239 	struct rcar_gen3_thermal_priv *priv = data;
240 	unsigned int i;
241 	u32 status;
242 
243 	for (i = 0; i < priv->num_tscs; i++) {
244 		status = rcar_gen3_thermal_read(priv->tscs[i], REG_GEN3_IRQSTR);
245 		rcar_gen3_thermal_write(priv->tscs[i], REG_GEN3_IRQSTR, 0);
246 		if (status && priv->tscs[i]->zone)
247 			thermal_zone_device_update(priv->tscs[i]->zone,
248 						   THERMAL_EVENT_UNSPECIFIED);
249 	}
250 
251 	return IRQ_HANDLED;
252 }
253 
254 static void rcar_gen3_thermal_read_fuses_gen3(struct rcar_gen3_thermal_priv *priv)
255 {
256 	unsigned int i;
257 
258 	/*
259 	 * Set the pseudo calibration points with fused values.
260 	 * PTAT is shared between all TSCs but only fused for the first
261 	 * TSC while THCODEs are fused for each TSC.
262 	 */
263 	priv->ptat[0] = rcar_gen3_thermal_read(priv->tscs[0], REG_GEN3_PTAT1) &
264 		GEN3_FUSE_MASK;
265 	priv->ptat[1] = rcar_gen3_thermal_read(priv->tscs[0], REG_GEN3_PTAT2) &
266 		GEN3_FUSE_MASK;
267 	priv->ptat[2] = rcar_gen3_thermal_read(priv->tscs[0], REG_GEN3_PTAT3) &
268 		GEN3_FUSE_MASK;
269 
270 	for (i = 0; i < priv->num_tscs; i++) {
271 		struct rcar_gen3_thermal_tsc *tsc = priv->tscs[i];
272 
273 		tsc->thcode[0] = rcar_gen3_thermal_read(tsc, REG_GEN3_THCODE1) &
274 			GEN3_FUSE_MASK;
275 		tsc->thcode[1] = rcar_gen3_thermal_read(tsc, REG_GEN3_THCODE2) &
276 			GEN3_FUSE_MASK;
277 		tsc->thcode[2] = rcar_gen3_thermal_read(tsc, REG_GEN3_THCODE3) &
278 			GEN3_FUSE_MASK;
279 	}
280 }
281 
282 static void rcar_gen3_thermal_read_fuses_gen4(struct rcar_gen3_thermal_priv *priv)
283 {
284 	unsigned int i;
285 
286 	/*
287 	 * Set the pseudo calibration points with fused values.
288 	 * PTAT is shared between all TSCs but only fused for the first
289 	 * TSC while THCODEs are fused for each TSC.
290 	 */
291 	priv->ptat[0] = rcar_gen3_thermal_read(priv->tscs[0], REG_GEN4_THSFMON16) &
292 		GEN4_FUSE_MASK;
293 	priv->ptat[1] = rcar_gen3_thermal_read(priv->tscs[0], REG_GEN4_THSFMON17) &
294 		GEN4_FUSE_MASK;
295 	priv->ptat[2] = rcar_gen3_thermal_read(priv->tscs[0], REG_GEN4_THSFMON15) &
296 		GEN4_FUSE_MASK;
297 
298 	for (i = 0; i < priv->num_tscs; i++) {
299 		struct rcar_gen3_thermal_tsc *tsc = priv->tscs[i];
300 
301 		tsc->thcode[0] = rcar_gen3_thermal_read(tsc, REG_GEN4_THSFMON01) &
302 			GEN4_FUSE_MASK;
303 		tsc->thcode[1] = rcar_gen3_thermal_read(tsc, REG_GEN4_THSFMON02) &
304 			GEN4_FUSE_MASK;
305 		tsc->thcode[2] = rcar_gen3_thermal_read(tsc, REG_GEN4_THSFMON00) &
306 			GEN4_FUSE_MASK;
307 	}
308 }
309 
310 static bool rcar_gen3_thermal_read_fuses(struct rcar_gen3_thermal_priv *priv)
311 {
312 	unsigned int i;
313 	u32 thscp;
314 
315 	/* If fuses are not set, fallback to pseudo values. */
316 	thscp = rcar_gen3_thermal_read(priv->tscs[0], REG_GEN3_THSCP);
317 	if (!priv->info->read_fuses ||
318 	    (thscp & THSCP_COR_PARA_VLD) != THSCP_COR_PARA_VLD) {
319 		/* Default THCODE values in case FUSEs are not set. */
320 		static const int thcodes[TSC_MAX_NUM][3] = {
321 			{ 3397, 2800, 2221 },
322 			{ 3393, 2795, 2216 },
323 			{ 3389, 2805, 2237 },
324 			{ 3415, 2694, 2195 },
325 			{ 3356, 2724, 2244 },
326 		};
327 
328 		priv->ptat[0] = 2631;
329 		priv->ptat[1] = 1509;
330 		priv->ptat[2] = 435;
331 
332 		for (i = 0; i < priv->num_tscs; i++) {
333 			struct rcar_gen3_thermal_tsc *tsc = priv->tscs[i];
334 
335 			tsc->thcode[0] = thcodes[i][0];
336 			tsc->thcode[1] = thcodes[i][1];
337 			tsc->thcode[2] = thcodes[i][2];
338 		}
339 
340 		return false;
341 	}
342 
343 	priv->info->read_fuses(priv);
344 	return true;
345 }
346 
347 static void rcar_gen3_thermal_init(struct rcar_gen3_thermal_priv *priv,
348 				   struct rcar_gen3_thermal_tsc *tsc)
349 {
350 	u32 reg_val;
351 
352 	reg_val = rcar_gen3_thermal_read(tsc, REG_GEN3_THCTR);
353 	reg_val &= ~THCTR_PONM;
354 	rcar_gen3_thermal_write(tsc, REG_GEN3_THCTR, reg_val);
355 
356 	usleep_range(1000, 2000);
357 
358 	rcar_gen3_thermal_write(tsc, REG_GEN3_IRQCTL, 0);
359 	rcar_gen3_thermal_write(tsc, REG_GEN3_IRQMSK, 0);
360 	if (priv->ops.set_trips)
361 		rcar_gen3_thermal_write(tsc, REG_GEN3_IRQEN,
362 					IRQ_TEMPD1 | IRQ_TEMP2);
363 
364 	reg_val = rcar_gen3_thermal_read(tsc, REG_GEN3_THCTR);
365 	reg_val |= THCTR_THSST;
366 	rcar_gen3_thermal_write(tsc, REG_GEN3_THCTR, reg_val);
367 
368 	usleep_range(1000, 2000);
369 }
370 
371 static const struct rcar_thermal_info rcar_m3w_thermal_info = {
372 	.ths_tj_1 = 116,
373 	.read_fuses = rcar_gen3_thermal_read_fuses_gen3,
374 };
375 
376 static const struct rcar_thermal_info rcar_gen3_thermal_info = {
377 	.ths_tj_1 = 126,
378 	.read_fuses = rcar_gen3_thermal_read_fuses_gen3,
379 };
380 
381 static const struct rcar_thermal_info rcar_gen4_thermal_info = {
382 	.ths_tj_1 = 126,
383 	.read_fuses = rcar_gen3_thermal_read_fuses_gen4,
384 };
385 
386 static const struct of_device_id rcar_gen3_thermal_dt_ids[] = {
387 	{
388 		.compatible = "renesas,r8a774a1-thermal",
389 		.data = &rcar_m3w_thermal_info,
390 	},
391 	{
392 		.compatible = "renesas,r8a774b1-thermal",
393 		.data = &rcar_gen3_thermal_info,
394 	},
395 	{
396 		.compatible = "renesas,r8a774e1-thermal",
397 		.data = &rcar_gen3_thermal_info,
398 	},
399 	{
400 		.compatible = "renesas,r8a7795-thermal",
401 		.data = &rcar_gen3_thermal_info,
402 	},
403 	{
404 		.compatible = "renesas,r8a7796-thermal",
405 		.data = &rcar_m3w_thermal_info,
406 	},
407 	{
408 		.compatible = "renesas,r8a77961-thermal",
409 		.data = &rcar_m3w_thermal_info,
410 	},
411 	{
412 		.compatible = "renesas,r8a77965-thermal",
413 		.data = &rcar_gen3_thermal_info,
414 	},
415 	{
416 		.compatible = "renesas,r8a77980-thermal",
417 		.data = &rcar_gen3_thermal_info,
418 	},
419 	{
420 		.compatible = "renesas,r8a779a0-thermal",
421 		.data = &rcar_gen3_thermal_info,
422 	},
423 	{
424 		.compatible = "renesas,r8a779f0-thermal",
425 		.data = &rcar_gen4_thermal_info,
426 	},
427 	{
428 		.compatible = "renesas,r8a779g0-thermal",
429 		.data = &rcar_gen4_thermal_info,
430 	},
431 	{},
432 };
433 MODULE_DEVICE_TABLE(of, rcar_gen3_thermal_dt_ids);
434 
435 static int rcar_gen3_thermal_remove(struct platform_device *pdev)
436 {
437 	struct device *dev = &pdev->dev;
438 
439 	pm_runtime_put(dev);
440 	pm_runtime_disable(dev);
441 
442 	return 0;
443 }
444 
445 static void rcar_gen3_hwmon_action(void *data)
446 {
447 	struct thermal_zone_device *zone = data;
448 
449 	thermal_remove_hwmon_sysfs(zone);
450 }
451 
452 static int rcar_gen3_thermal_request_irqs(struct rcar_gen3_thermal_priv *priv,
453 					  struct platform_device *pdev)
454 {
455 	struct device *dev = &pdev->dev;
456 	unsigned int i;
457 	char *irqname;
458 	int ret, irq;
459 
460 	for (i = 0; i < 2; i++) {
461 		irq = platform_get_irq_optional(pdev, i);
462 		if (irq < 0)
463 			return irq;
464 
465 		irqname = devm_kasprintf(dev, GFP_KERNEL, "%s:ch%d",
466 					 dev_name(dev), i);
467 		if (!irqname)
468 			return -ENOMEM;
469 
470 		ret = devm_request_threaded_irq(dev, irq, NULL,
471 						rcar_gen3_thermal_irq,
472 						IRQF_ONESHOT, irqname, priv);
473 		if (ret)
474 			return ret;
475 	}
476 
477 	return 0;
478 }
479 
480 static int rcar_gen3_thermal_probe(struct platform_device *pdev)
481 {
482 	struct rcar_gen3_thermal_priv *priv;
483 	struct device *dev = &pdev->dev;
484 	struct resource *res;
485 	struct thermal_zone_device *zone;
486 	unsigned int i;
487 	int ret;
488 
489 	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
490 	if (!priv)
491 		return -ENOMEM;
492 
493 	priv->ops = rcar_gen3_tz_of_ops;
494 
495 	priv->info = of_device_get_match_data(dev);
496 	platform_set_drvdata(pdev, priv);
497 
498 	if (rcar_gen3_thermal_request_irqs(priv, pdev))
499 		priv->ops.set_trips = NULL;
500 
501 	pm_runtime_enable(dev);
502 	pm_runtime_get_sync(dev);
503 
504 	for (i = 0; i < TSC_MAX_NUM; i++) {
505 		struct rcar_gen3_thermal_tsc *tsc;
506 
507 		res = platform_get_resource(pdev, IORESOURCE_MEM, i);
508 		if (!res)
509 			break;
510 
511 		tsc = devm_kzalloc(dev, sizeof(*tsc), GFP_KERNEL);
512 		if (!tsc) {
513 			ret = -ENOMEM;
514 			goto error_unregister;
515 		}
516 
517 		tsc->base = devm_ioremap_resource(dev, res);
518 		if (IS_ERR(tsc->base)) {
519 			ret = PTR_ERR(tsc->base);
520 			goto error_unregister;
521 		}
522 
523 		priv->tscs[i] = tsc;
524 	}
525 
526 	priv->num_tscs = i;
527 
528 	if (!rcar_gen3_thermal_read_fuses(priv))
529 		dev_info(dev, "No calibration values fused, fallback to driver values\n");
530 
531 	for (i = 0; i < priv->num_tscs; i++) {
532 		struct rcar_gen3_thermal_tsc *tsc = priv->tscs[i];
533 
534 		rcar_gen3_thermal_init(priv, tsc);
535 		rcar_gen3_thermal_calc_coefs(priv, tsc, priv->info->ths_tj_1);
536 
537 		zone = devm_thermal_of_zone_register(dev, i, tsc, &priv->ops);
538 		if (IS_ERR(zone)) {
539 			dev_err(dev, "Sensor %u: Can't register thermal zone\n", i);
540 			ret = PTR_ERR(zone);
541 			goto error_unregister;
542 		}
543 		tsc->zone = zone;
544 
545 		ret = thermal_add_hwmon_sysfs(tsc->zone);
546 		if (ret)
547 			goto error_unregister;
548 
549 		ret = devm_add_action_or_reset(dev, rcar_gen3_hwmon_action, zone);
550 		if (ret)
551 			goto error_unregister;
552 
553 		ret = thermal_zone_get_num_trips(tsc->zone);
554 		if (ret < 0)
555 			goto error_unregister;
556 
557 		dev_info(dev, "Sensor %u: Loaded %d trip points\n", i, ret);
558 	}
559 
560 	if (!priv->num_tscs) {
561 		ret = -ENODEV;
562 		goto error_unregister;
563 	}
564 
565 	return 0;
566 
567 error_unregister:
568 	rcar_gen3_thermal_remove(pdev);
569 
570 	return ret;
571 }
572 
573 static int __maybe_unused rcar_gen3_thermal_resume(struct device *dev)
574 {
575 	struct rcar_gen3_thermal_priv *priv = dev_get_drvdata(dev);
576 	unsigned int i;
577 
578 	for (i = 0; i < priv->num_tscs; i++) {
579 		struct rcar_gen3_thermal_tsc *tsc = priv->tscs[i];
580 
581 		rcar_gen3_thermal_init(priv, tsc);
582 	}
583 
584 	return 0;
585 }
586 
587 static SIMPLE_DEV_PM_OPS(rcar_gen3_thermal_pm_ops, NULL,
588 			 rcar_gen3_thermal_resume);
589 
590 static struct platform_driver rcar_gen3_thermal_driver = {
591 	.driver	= {
592 		.name	= "rcar_gen3_thermal",
593 		.pm = &rcar_gen3_thermal_pm_ops,
594 		.of_match_table = rcar_gen3_thermal_dt_ids,
595 	},
596 	.probe		= rcar_gen3_thermal_probe,
597 	.remove		= rcar_gen3_thermal_remove,
598 };
599 module_platform_driver(rcar_gen3_thermal_driver);
600 
601 MODULE_LICENSE("GPL v2");
602 MODULE_DESCRIPTION("R-Car Gen3 THS thermal sensor driver");
603 MODULE_AUTHOR("Wolfram Sang <wsa+renesas@sang-engineering.com>");
604