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1e426ffd KM |
1 | /* |
2 | * R-Car THS/TSC thermal sensor driver | |
3 | * | |
4 | * Copyright (C) 2012 Renesas Solutions Corp. | |
5 | * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; version 2 of the License. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License along | |
17 | * with this program; if not, write to the Free Software Foundation, Inc., | |
18 | * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. | |
19 | */ | |
20 | #include <linux/delay.h> | |
21 | #include <linux/err.h> | |
e0a5172e KM |
22 | #include <linux/irq.h> |
23 | #include <linux/interrupt.h> | |
1e426ffd KM |
24 | #include <linux/io.h> |
25 | #include <linux/module.h> | |
8b477ea5 | 26 | #include <linux/of_device.h> |
1e426ffd | 27 | #include <linux/platform_device.h> |
51d45d25 | 28 | #include <linux/pm_runtime.h> |
d2a73e22 | 29 | #include <linux/reboot.h> |
1e426ffd KM |
30 | #include <linux/slab.h> |
31 | #include <linux/spinlock.h> | |
32 | #include <linux/thermal.h> | |
33 | ||
d2a73e22 KM |
34 | #define IDLE_INTERVAL 5000 |
35 | ||
e0a5172e KM |
36 | #define COMMON_STR 0x00 |
37 | #define COMMON_ENR 0x04 | |
38 | #define COMMON_INTMSK 0x0c | |
39 | ||
40 | #define REG_POSNEG 0x20 | |
41 | #define REG_FILONOFF 0x28 | |
e9137a58 KM |
42 | #define REG_THSCR 0x2c |
43 | #define REG_THSSR 0x30 | |
e0a5172e | 44 | #define REG_INTCTRL 0x34 |
1e426ffd KM |
45 | |
46 | /* THSCR */ | |
f8f53e18 | 47 | #define CPCTL (1 << 12) |
1e426ffd KM |
48 | |
49 | /* THSSR */ | |
50 | #define CTEMP 0x3f | |
51 | ||
3676d1dd KM |
52 | struct rcar_thermal_common { |
53 | void __iomem *base; | |
54 | struct device *dev; | |
55 | struct list_head head; | |
e0a5172e | 56 | spinlock_t lock; |
3676d1dd | 57 | }; |
1e426ffd KM |
58 | |
59 | struct rcar_thermal_priv { | |
60 | void __iomem *base; | |
3676d1dd KM |
61 | struct rcar_thermal_common *common; |
62 | struct thermal_zone_device *zone; | |
e0a5172e | 63 | struct delayed_work work; |
b2bbc6a2 | 64 | struct mutex lock; |
3676d1dd | 65 | struct list_head list; |
e0a5172e | 66 | int id; |
913015c6 | 67 | u32 ctemp; |
1e426ffd KM |
68 | }; |
69 | ||
3676d1dd KM |
70 | #define rcar_thermal_for_each_priv(pos, common) \ |
71 | list_for_each_entry(pos, &common->head, list) | |
72 | ||
c499703e | 73 | #define MCELSIUS(temp) ((temp) * 1000) |
9dde8f86 | 74 | #define rcar_zone_to_priv(zone) ((zone)->devdata) |
3676d1dd KM |
75 | #define rcar_priv_to_dev(priv) ((priv)->common->dev) |
76 | #define rcar_has_irq_support(priv) ((priv)->common->base) | |
e0a5172e KM |
77 | #define rcar_id_to_shift(priv) ((priv)->id * 8) |
78 | ||
8b477ea5 | 79 | #define USE_OF_THERMAL 1 |
ca1e4558 KM |
80 | static const struct of_device_id rcar_thermal_dt_ids[] = { |
81 | { .compatible = "renesas,rcar-thermal", }, | |
8b477ea5 | 82 | { .compatible = "renesas,rcar-gen2-thermal", .data = (void *)USE_OF_THERMAL }, |
ca1e4558 KM |
83 | {}, |
84 | }; | |
85 | MODULE_DEVICE_TABLE(of, rcar_thermal_dt_ids); | |
86 | ||
1e426ffd KM |
87 | /* |
88 | * basic functions | |
89 | */ | |
e9137a58 KM |
90 | #define rcar_thermal_common_read(c, r) \ |
91 | _rcar_thermal_common_read(c, COMMON_ ##r) | |
92 | static u32 _rcar_thermal_common_read(struct rcar_thermal_common *common, | |
93 | u32 reg) | |
94 | { | |
95 | return ioread32(common->base + reg); | |
96 | } | |
97 | ||
98 | #define rcar_thermal_common_write(c, r, d) \ | |
99 | _rcar_thermal_common_write(c, COMMON_ ##r, d) | |
100 | static void _rcar_thermal_common_write(struct rcar_thermal_common *common, | |
101 | u32 reg, u32 data) | |
102 | { | |
103 | iowrite32(data, common->base + reg); | |
104 | } | |
105 | ||
106 | #define rcar_thermal_common_bset(c, r, m, d) \ | |
107 | _rcar_thermal_common_bset(c, COMMON_ ##r, m, d) | |
108 | static void _rcar_thermal_common_bset(struct rcar_thermal_common *common, | |
109 | u32 reg, u32 mask, u32 data) | |
110 | { | |
111 | u32 val; | |
112 | ||
113 | val = ioread32(common->base + reg); | |
114 | val &= ~mask; | |
115 | val |= (data & mask); | |
116 | iowrite32(val, common->base + reg); | |
117 | } | |
e9137a58 KM |
118 | |
119 | #define rcar_thermal_read(p, r) _rcar_thermal_read(p, REG_ ##r) | |
120 | static u32 _rcar_thermal_read(struct rcar_thermal_priv *priv, u32 reg) | |
1e426ffd | 121 | { |
b2bbc6a2 | 122 | return ioread32(priv->base + reg); |
1e426ffd KM |
123 | } |
124 | ||
e9137a58 KM |
125 | #define rcar_thermal_write(p, r, d) _rcar_thermal_write(p, REG_ ##r, d) |
126 | static void _rcar_thermal_write(struct rcar_thermal_priv *priv, | |
127 | u32 reg, u32 data) | |
1e426ffd | 128 | { |
1e426ffd | 129 | iowrite32(data, priv->base + reg); |
1e426ffd | 130 | } |
1e426ffd | 131 | |
e9137a58 KM |
132 | #define rcar_thermal_bset(p, r, m, d) _rcar_thermal_bset(p, REG_ ##r, m, d) |
133 | static void _rcar_thermal_bset(struct rcar_thermal_priv *priv, u32 reg, | |
134 | u32 mask, u32 data) | |
1e426ffd | 135 | { |
1e426ffd KM |
136 | u32 val; |
137 | ||
1e426ffd KM |
138 | val = ioread32(priv->base + reg); |
139 | val &= ~mask; | |
140 | val |= (data & mask); | |
141 | iowrite32(val, priv->base + reg); | |
1e426ffd KM |
142 | } |
143 | ||
144 | /* | |
145 | * zone device functions | |
146 | */ | |
e0a5172e | 147 | static int rcar_thermal_update_temp(struct rcar_thermal_priv *priv) |
1e426ffd | 148 | { |
f8f53e18 KM |
149 | struct device *dev = rcar_priv_to_dev(priv); |
150 | int i; | |
913015c6 | 151 | u32 ctemp, old, new; |
f0e68fc3 | 152 | int ret = -EINVAL; |
f8f53e18 | 153 | |
b2bbc6a2 KM |
154 | mutex_lock(&priv->lock); |
155 | ||
f8f53e18 KM |
156 | /* |
157 | * TSC decides a value of CPTAP automatically, | |
158 | * and this is the conditions which validate interrupt. | |
159 | */ | |
160 | rcar_thermal_bset(priv, THSCR, CPCTL, CPCTL); | |
161 | ||
162 | ctemp = 0; | |
163 | old = ~0; | |
164 | for (i = 0; i < 128; i++) { | |
1e426ffd KM |
165 | /* |
166 | * we need to wait 300us after changing comparator offset | |
167 | * to get stable temperature. | |
168 | * see "Usage Notes" on datasheet | |
169 | */ | |
1e426ffd KM |
170 | udelay(300); |
171 | ||
f8f53e18 KM |
172 | new = rcar_thermal_read(priv, THSSR) & CTEMP; |
173 | if (new == old) { | |
174 | ctemp = new; | |
1e426ffd KM |
175 | break; |
176 | } | |
f8f53e18 | 177 | old = new; |
1e426ffd KM |
178 | } |
179 | ||
f8f53e18 KM |
180 | if (!ctemp) { |
181 | dev_err(dev, "thermal sensor was broken\n"); | |
f0e68fc3 | 182 | goto err_out_unlock; |
f8f53e18 KM |
183 | } |
184 | ||
e0a5172e KM |
185 | /* |
186 | * enable IRQ | |
187 | */ | |
188 | if (rcar_has_irq_support(priv)) { | |
189 | rcar_thermal_write(priv, FILONOFF, 0); | |
190 | ||
191 | /* enable Rising/Falling edge interrupt */ | |
192 | rcar_thermal_write(priv, POSNEG, 0x1); | |
193 | rcar_thermal_write(priv, INTCTRL, (((ctemp - 0) << 8) | | |
194 | ((ctemp - 1) << 0))); | |
195 | } | |
196 | ||
197 | dev_dbg(dev, "thermal%d %d -> %d\n", priv->id, priv->ctemp, ctemp); | |
198 | ||
199 | priv->ctemp = ctemp; | |
f0e68fc3 WY |
200 | ret = 0; |
201 | err_out_unlock: | |
b2bbc6a2 | 202 | mutex_unlock(&priv->lock); |
f0e68fc3 | 203 | return ret; |
1e426ffd KM |
204 | } |
205 | ||
8b477ea5 KM |
206 | static int rcar_thermal_get_current_temp(struct rcar_thermal_priv *priv, |
207 | int *temp) | |
e0a5172e | 208 | { |
5440c40b | 209 | int tmp; |
a1ade565 | 210 | int ret; |
e0a5172e | 211 | |
a1ade565 KM |
212 | ret = rcar_thermal_update_temp(priv); |
213 | if (ret < 0) | |
214 | return ret; | |
e0a5172e KM |
215 | |
216 | mutex_lock(&priv->lock); | |
5440c40b | 217 | tmp = MCELSIUS((priv->ctemp * 5) - 65); |
e0a5172e KM |
218 | mutex_unlock(&priv->lock); |
219 | ||
5440c40b KM |
220 | if ((tmp < MCELSIUS(-45)) || (tmp > MCELSIUS(125))) { |
221 | struct device *dev = rcar_priv_to_dev(priv); | |
222 | ||
223 | dev_err(dev, "it couldn't measure temperature correctly\n"); | |
224 | return -EIO; | |
225 | } | |
226 | ||
227 | *temp = tmp; | |
228 | ||
e0a5172e KM |
229 | return 0; |
230 | } | |
231 | ||
8b477ea5 KM |
232 | static int rcar_thermal_of_get_temp(void *data, int *temp) |
233 | { | |
234 | struct rcar_thermal_priv *priv = data; | |
235 | ||
236 | return rcar_thermal_get_current_temp(priv, temp); | |
237 | } | |
238 | ||
239 | static int rcar_thermal_get_temp(struct thermal_zone_device *zone, int *temp) | |
240 | { | |
241 | struct rcar_thermal_priv *priv = rcar_zone_to_priv(zone); | |
242 | ||
243 | return rcar_thermal_get_current_temp(priv, temp); | |
244 | } | |
245 | ||
d2a73e22 KM |
246 | static int rcar_thermal_get_trip_type(struct thermal_zone_device *zone, |
247 | int trip, enum thermal_trip_type *type) | |
248 | { | |
249 | struct rcar_thermal_priv *priv = rcar_zone_to_priv(zone); | |
3676d1dd | 250 | struct device *dev = rcar_priv_to_dev(priv); |
d2a73e22 KM |
251 | |
252 | /* see rcar_thermal_get_temp() */ | |
253 | switch (trip) { | |
254 | case 0: /* +90 <= temp */ | |
255 | *type = THERMAL_TRIP_CRITICAL; | |
256 | break; | |
257 | default: | |
3676d1dd | 258 | dev_err(dev, "rcar driver trip error\n"); |
d2a73e22 KM |
259 | return -EINVAL; |
260 | } | |
261 | ||
262 | return 0; | |
263 | } | |
264 | ||
265 | static int rcar_thermal_get_trip_temp(struct thermal_zone_device *zone, | |
17e8351a | 266 | int trip, int *temp) |
d2a73e22 KM |
267 | { |
268 | struct rcar_thermal_priv *priv = rcar_zone_to_priv(zone); | |
3676d1dd | 269 | struct device *dev = rcar_priv_to_dev(priv); |
d2a73e22 KM |
270 | |
271 | /* see rcar_thermal_get_temp() */ | |
272 | switch (trip) { | |
273 | case 0: /* +90 <= temp */ | |
274 | *temp = MCELSIUS(90); | |
275 | break; | |
276 | default: | |
3676d1dd | 277 | dev_err(dev, "rcar driver trip error\n"); |
d2a73e22 KM |
278 | return -EINVAL; |
279 | } | |
280 | ||
281 | return 0; | |
282 | } | |
283 | ||
284 | static int rcar_thermal_notify(struct thermal_zone_device *zone, | |
285 | int trip, enum thermal_trip_type type) | |
286 | { | |
287 | struct rcar_thermal_priv *priv = rcar_zone_to_priv(zone); | |
3676d1dd | 288 | struct device *dev = rcar_priv_to_dev(priv); |
d2a73e22 KM |
289 | |
290 | switch (type) { | |
291 | case THERMAL_TRIP_CRITICAL: | |
292 | /* FIXME */ | |
3676d1dd | 293 | dev_warn(dev, "Thermal reached to critical temperature\n"); |
d2a73e22 KM |
294 | break; |
295 | default: | |
296 | break; | |
297 | } | |
298 | ||
299 | return 0; | |
300 | } | |
301 | ||
8b477ea5 KM |
302 | static const struct thermal_zone_of_device_ops rcar_thermal_zone_of_ops = { |
303 | .get_temp = rcar_thermal_of_get_temp, | |
304 | }; | |
305 | ||
1e426ffd | 306 | static struct thermal_zone_device_ops rcar_thermal_zone_ops = { |
d2a73e22 KM |
307 | .get_temp = rcar_thermal_get_temp, |
308 | .get_trip_type = rcar_thermal_get_trip_type, | |
309 | .get_trip_temp = rcar_thermal_get_trip_temp, | |
310 | .notify = rcar_thermal_notify, | |
1e426ffd KM |
311 | }; |
312 | ||
e0a5172e KM |
313 | /* |
314 | * interrupt | |
315 | */ | |
316 | #define rcar_thermal_irq_enable(p) _rcar_thermal_irq_ctrl(p, 1) | |
317 | #define rcar_thermal_irq_disable(p) _rcar_thermal_irq_ctrl(p, 0) | |
318 | static void _rcar_thermal_irq_ctrl(struct rcar_thermal_priv *priv, int enable) | |
319 | { | |
320 | struct rcar_thermal_common *common = priv->common; | |
321 | unsigned long flags; | |
322 | u32 mask = 0x3 << rcar_id_to_shift(priv); /* enable Rising/Falling */ | |
323 | ||
ffbcdf8a KM |
324 | if (!rcar_has_irq_support(priv)) |
325 | return; | |
326 | ||
e0a5172e KM |
327 | spin_lock_irqsave(&common->lock, flags); |
328 | ||
329 | rcar_thermal_common_bset(common, INTMSK, mask, enable ? 0 : mask); | |
330 | ||
331 | spin_unlock_irqrestore(&common->lock, flags); | |
332 | } | |
333 | ||
334 | static void rcar_thermal_work(struct work_struct *work) | |
335 | { | |
336 | struct rcar_thermal_priv *priv; | |
17e8351a | 337 | int cctemp, nctemp; |
a1ade565 | 338 | int ret; |
e0a5172e KM |
339 | |
340 | priv = container_of(work, struct rcar_thermal_priv, work.work); | |
341 | ||
8b477ea5 KM |
342 | ret = rcar_thermal_get_current_temp(priv, &cctemp); |
343 | if (ret < 0) | |
344 | return; | |
345 | ||
a1ade565 KM |
346 | ret = rcar_thermal_update_temp(priv); |
347 | if (ret < 0) | |
348 | return; | |
349 | ||
e0a5172e | 350 | rcar_thermal_irq_enable(priv); |
9477165e | 351 | |
8b477ea5 KM |
352 | ret = rcar_thermal_get_current_temp(priv, &nctemp); |
353 | if (ret < 0) | |
354 | return; | |
355 | ||
9477165e PT |
356 | if (nctemp != cctemp) |
357 | thermal_zone_device_update(priv->zone); | |
e0a5172e KM |
358 | } |
359 | ||
360 | static u32 rcar_thermal_had_changed(struct rcar_thermal_priv *priv, u32 status) | |
361 | { | |
362 | struct device *dev = rcar_priv_to_dev(priv); | |
363 | ||
364 | status = (status >> rcar_id_to_shift(priv)) & 0x3; | |
365 | ||
206c0cba | 366 | if (status) { |
e0a5172e KM |
367 | dev_dbg(dev, "thermal%d %s%s\n", |
368 | priv->id, | |
369 | (status & 0x2) ? "Rising " : "", | |
370 | (status & 0x1) ? "Falling" : ""); | |
371 | } | |
372 | ||
373 | return status; | |
374 | } | |
375 | ||
376 | static irqreturn_t rcar_thermal_irq(int irq, void *data) | |
377 | { | |
378 | struct rcar_thermal_common *common = data; | |
379 | struct rcar_thermal_priv *priv; | |
380 | unsigned long flags; | |
381 | u32 status, mask; | |
382 | ||
383 | spin_lock_irqsave(&common->lock, flags); | |
384 | ||
385 | mask = rcar_thermal_common_read(common, INTMSK); | |
386 | status = rcar_thermal_common_read(common, STR); | |
387 | rcar_thermal_common_write(common, STR, 0x000F0F0F & mask); | |
388 | ||
389 | spin_unlock_irqrestore(&common->lock, flags); | |
390 | ||
391 | status = status & ~mask; | |
392 | ||
393 | /* | |
394 | * check the status | |
395 | */ | |
396 | rcar_thermal_for_each_priv(priv, common) { | |
397 | if (rcar_thermal_had_changed(priv, status)) { | |
398 | rcar_thermal_irq_disable(priv); | |
399 | schedule_delayed_work(&priv->work, | |
400 | msecs_to_jiffies(300)); | |
401 | } | |
402 | } | |
403 | ||
404 | return IRQ_HANDLED; | |
405 | } | |
406 | ||
1e426ffd KM |
407 | /* |
408 | * platform functions | |
409 | */ | |
84f0e490 KM |
410 | static int rcar_thermal_remove(struct platform_device *pdev) |
411 | { | |
412 | struct rcar_thermal_common *common = platform_get_drvdata(pdev); | |
413 | struct device *dev = &pdev->dev; | |
414 | struct rcar_thermal_priv *priv; | |
415 | ||
416 | rcar_thermal_for_each_priv(priv, common) { | |
ffbcdf8a | 417 | rcar_thermal_irq_disable(priv); |
84f0e490 KM |
418 | thermal_zone_device_unregister(priv->zone); |
419 | } | |
420 | ||
421 | pm_runtime_put(dev); | |
422 | pm_runtime_disable(dev); | |
423 | ||
424 | return 0; | |
425 | } | |
426 | ||
1e426ffd KM |
427 | static int rcar_thermal_probe(struct platform_device *pdev) |
428 | { | |
3676d1dd | 429 | struct rcar_thermal_common *common; |
1e426ffd | 430 | struct rcar_thermal_priv *priv; |
3676d1dd KM |
431 | struct device *dev = &pdev->dev; |
432 | struct resource *res, *irq; | |
67bc3f42 | 433 | unsigned long of_data = (unsigned long)of_device_get_match_data(dev); |
3676d1dd KM |
434 | int mres = 0; |
435 | int i; | |
fb84d990 | 436 | int ret = -ENODEV; |
e0a5172e | 437 | int idle = IDLE_INTERVAL; |
11313746 | 438 | u32 enr_bits = 0; |
1e426ffd | 439 | |
3676d1dd | 440 | common = devm_kzalloc(dev, sizeof(*common), GFP_KERNEL); |
b0a60d88 | 441 | if (!common) |
1e426ffd | 442 | return -ENOMEM; |
1e426ffd | 443 | |
84f0e490 KM |
444 | platform_set_drvdata(pdev, common); |
445 | ||
3676d1dd | 446 | INIT_LIST_HEAD(&common->head); |
e0a5172e | 447 | spin_lock_init(&common->lock); |
3676d1dd KM |
448 | common->dev = dev; |
449 | ||
51d45d25 KM |
450 | pm_runtime_enable(dev); |
451 | pm_runtime_get_sync(dev); | |
452 | ||
3676d1dd KM |
453 | irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0); |
454 | if (irq) { | |
455 | /* | |
456 | * platform has IRQ support. | |
ee853add | 457 | * Then, driver uses common registers |
3676d1dd KM |
458 | * rcar_has_irq_support() will be enabled |
459 | */ | |
c28f692c | 460 | res = platform_get_resource(pdev, IORESOURCE_MEM, mres++); |
5095526f SK |
461 | common->base = devm_ioremap_resource(dev, res); |
462 | if (IS_ERR(common->base)) | |
463 | return PTR_ERR(common->base); | |
e0a5172e | 464 | |
6fe495e0 | 465 | idle = 0; /* polling delay is not needed */ |
1e426ffd KM |
466 | } |
467 | ||
3676d1dd KM |
468 | for (i = 0;; i++) { |
469 | res = platform_get_resource(pdev, IORESOURCE_MEM, mres++); | |
470 | if (!res) | |
471 | break; | |
472 | ||
473 | priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); | |
474 | if (!priv) { | |
1dc20828 KM |
475 | ret = -ENOMEM; |
476 | goto error_unregister; | |
3676d1dd KM |
477 | } |
478 | ||
5095526f | 479 | priv->base = devm_ioremap_resource(dev, res); |
1dc20828 KM |
480 | if (IS_ERR(priv->base)) { |
481 | ret = PTR_ERR(priv->base); | |
482 | goto error_unregister; | |
483 | } | |
3676d1dd KM |
484 | |
485 | priv->common = common; | |
e0a5172e | 486 | priv->id = i; |
3676d1dd KM |
487 | mutex_init(&priv->lock); |
488 | INIT_LIST_HEAD(&priv->list); | |
e0a5172e | 489 | INIT_DELAYED_WORK(&priv->work, rcar_thermal_work); |
a1ade565 KM |
490 | ret = rcar_thermal_update_temp(priv); |
491 | if (ret < 0) | |
492 | goto error_unregister; | |
3676d1dd | 493 | |
8b477ea5 | 494 | if (of_data == USE_OF_THERMAL) |
5e325868 | 495 | priv->zone = devm_thermal_zone_of_sensor_register( |
8b477ea5 KM |
496 | dev, i, priv, |
497 | &rcar_thermal_zone_of_ops); | |
498 | else | |
499 | priv->zone = thermal_zone_device_register( | |
500 | "rcar_thermal", | |
3676d1dd KM |
501 | 1, 0, priv, |
502 | &rcar_thermal_zone_ops, NULL, 0, | |
e0a5172e | 503 | idle); |
3676d1dd KM |
504 | if (IS_ERR(priv->zone)) { |
505 | dev_err(dev, "can't register thermal zone\n"); | |
fb84d990 | 506 | ret = PTR_ERR(priv->zone); |
3676d1dd KM |
507 | goto error_unregister; |
508 | } | |
509 | ||
ffbcdf8a | 510 | rcar_thermal_irq_enable(priv); |
1dc20828 KM |
511 | |
512 | list_move_tail(&priv->list, &common->head); | |
11313746 YS |
513 | |
514 | /* update ENR bits */ | |
515 | enr_bits |= 3 << (i * 8); | |
1e426ffd KM |
516 | } |
517 | ||
11313746 | 518 | /* enable temperature comparation */ |
0b37a83a GU |
519 | if (irq) { |
520 | ret = devm_request_irq(dev, irq->start, rcar_thermal_irq, 0, | |
521 | dev_name(dev), common); | |
522 | if (ret) { | |
523 | dev_err(dev, "irq request failed\n "); | |
524 | goto error_unregister; | |
525 | } | |
526 | ||
11313746 | 527 | rcar_thermal_common_write(common, ENR, enr_bits); |
0b37a83a | 528 | } |
11313746 | 529 | |
3db46c93 | 530 | dev_info(dev, "%d sensor probed\n", i); |
1e426ffd KM |
531 | |
532 | return 0; | |
3676d1dd KM |
533 | |
534 | error_unregister: | |
84f0e490 | 535 | rcar_thermal_remove(pdev); |
51d45d25 | 536 | |
fb84d990 | 537 | return ret; |
1e426ffd KM |
538 | } |
539 | ||
1e426ffd KM |
540 | static struct platform_driver rcar_thermal_driver = { |
541 | .driver = { | |
542 | .name = "rcar_thermal", | |
76cc1887 | 543 | .of_match_table = rcar_thermal_dt_ids, |
1e426ffd KM |
544 | }, |
545 | .probe = rcar_thermal_probe, | |
546 | .remove = rcar_thermal_remove, | |
547 | }; | |
548 | module_platform_driver(rcar_thermal_driver); | |
549 | ||
550 | MODULE_LICENSE("GPL"); | |
551 | MODULE_DESCRIPTION("R-Car THS/TSC thermal sensor driver"); | |
552 | MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>"); |