blob: fe4e767018c4cf73afa3c53852b6d48191e2a81e [file] [log] [blame]
Kuninori Morimoto1e426ff2012-07-21 10:53:48 +10001/*
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>
Kuninori Morimotoe0a51722013-01-31 09:04:48 +000022#include <linux/irq.h>
23#include <linux/interrupt.h>
Kuninori Morimoto1e426ff2012-07-21 10:53:48 +100024#include <linux/io.h>
25#include <linux/module.h>
26#include <linux/platform_device.h>
Kuninori Morimoto51d45d22013-03-26 06:08:52 +000027#include <linux/pm_runtime.h>
kuninori.morimoto.gx@renesas.comd2a73e22012-12-02 18:48:41 -080028#include <linux/reboot.h>
Kuninori Morimoto1e426ff2012-07-21 10:53:48 +100029#include <linux/slab.h>
30#include <linux/spinlock.h>
31#include <linux/thermal.h>
32
kuninori.morimoto.gx@renesas.comd2a73e22012-12-02 18:48:41 -080033#define IDLE_INTERVAL 5000
34
Kuninori Morimotoe0a51722013-01-31 09:04:48 +000035#define COMMON_STR 0x00
36#define COMMON_ENR 0x04
37#define COMMON_INTMSK 0x0c
38
39#define REG_POSNEG 0x20
40#define REG_FILONOFF 0x28
Kuninori Morimotoe9137a52013-01-31 09:03:46 +000041#define REG_THSCR 0x2c
42#define REG_THSSR 0x30
Kuninori Morimotoe0a51722013-01-31 09:04:48 +000043#define REG_INTCTRL 0x34
Kuninori Morimoto1e426ff2012-07-21 10:53:48 +100044
45/* THSCR */
Kuninori Morimotof8f53e12013-01-31 09:03:11 +000046#define CPCTL (1 << 12)
Kuninori Morimoto1e426ff2012-07-21 10:53:48 +100047
48/* THSSR */
49#define CTEMP 0x3f
50
Kuninori Morimoto3676d1d2013-01-31 09:03:33 +000051struct rcar_thermal_common {
52 void __iomem *base;
53 struct device *dev;
54 struct list_head head;
Kuninori Morimotoe0a51722013-01-31 09:04:48 +000055 spinlock_t lock;
Kuninori Morimoto3676d1d2013-01-31 09:03:33 +000056};
Kuninori Morimoto1e426ff2012-07-21 10:53:48 +100057
58struct rcar_thermal_priv {
59 void __iomem *base;
Kuninori Morimoto3676d1d2013-01-31 09:03:33 +000060 struct rcar_thermal_common *common;
61 struct thermal_zone_device *zone;
Kuninori Morimotoe0a51722013-01-31 09:04:48 +000062 struct delayed_work work;
Kuninori Morimotob2bbc6a2013-01-31 09:03:22 +000063 struct mutex lock;
Kuninori Morimoto3676d1d2013-01-31 09:03:33 +000064 struct list_head list;
Kuninori Morimotoe0a51722013-01-31 09:04:48 +000065 int id;
Yoshihiro Shimoda913015c2015-01-07 10:13:11 +090066 u32 ctemp;
Kuninori Morimoto1e426ff2012-07-21 10:53:48 +100067};
68
Kuninori Morimoto3676d1d2013-01-31 09:03:33 +000069#define rcar_thermal_for_each_priv(pos, common) \
70 list_for_each_entry(pos, &common->head, list)
71
Kuninori Morimotoc4997032012-11-26 02:32:06 +000072#define MCELSIUS(temp) ((temp) * 1000)
Kuninori Morimoto9dde8f82013-01-31 09:02:51 +000073#define rcar_zone_to_priv(zone) ((zone)->devdata)
Kuninori Morimoto3676d1d2013-01-31 09:03:33 +000074#define rcar_priv_to_dev(priv) ((priv)->common->dev)
75#define rcar_has_irq_support(priv) ((priv)->common->base)
Kuninori Morimotoe0a51722013-01-31 09:04:48 +000076#define rcar_id_to_shift(priv) ((priv)->id * 8)
77
78#ifdef DEBUG
79# define rcar_force_update_temp(priv) 1
80#else
81# define rcar_force_update_temp(priv) 0
82#endif
Kuninori Morimotoc4997032012-11-26 02:32:06 +000083
Kuninori Morimoto1e426ff2012-07-21 10:53:48 +100084/*
85 * basic functions
86 */
Kuninori Morimotoe9137a52013-01-31 09:03:46 +000087#define rcar_thermal_common_read(c, r) \
88 _rcar_thermal_common_read(c, COMMON_ ##r)
89static u32 _rcar_thermal_common_read(struct rcar_thermal_common *common,
90 u32 reg)
91{
92 return ioread32(common->base + reg);
93}
94
95#define rcar_thermal_common_write(c, r, d) \
96 _rcar_thermal_common_write(c, COMMON_ ##r, d)
97static void _rcar_thermal_common_write(struct rcar_thermal_common *common,
98 u32 reg, u32 data)
99{
100 iowrite32(data, common->base + reg);
101}
102
103#define rcar_thermal_common_bset(c, r, m, d) \
104 _rcar_thermal_common_bset(c, COMMON_ ##r, m, d)
105static void _rcar_thermal_common_bset(struct rcar_thermal_common *common,
106 u32 reg, u32 mask, u32 data)
107{
108 u32 val;
109
110 val = ioread32(common->base + reg);
111 val &= ~mask;
112 val |= (data & mask);
113 iowrite32(val, common->base + reg);
114}
Kuninori Morimotoe9137a52013-01-31 09:03:46 +0000115
116#define rcar_thermal_read(p, r) _rcar_thermal_read(p, REG_ ##r)
117static u32 _rcar_thermal_read(struct rcar_thermal_priv *priv, u32 reg)
Kuninori Morimoto1e426ff2012-07-21 10:53:48 +1000118{
Kuninori Morimotob2bbc6a2013-01-31 09:03:22 +0000119 return ioread32(priv->base + reg);
Kuninori Morimoto1e426ff2012-07-21 10:53:48 +1000120}
121
Kuninori Morimotoe9137a52013-01-31 09:03:46 +0000122#define rcar_thermal_write(p, r, d) _rcar_thermal_write(p, REG_ ##r, d)
123static void _rcar_thermal_write(struct rcar_thermal_priv *priv,
124 u32 reg, u32 data)
Kuninori Morimoto1e426ff2012-07-21 10:53:48 +1000125{
Kuninori Morimoto1e426ff2012-07-21 10:53:48 +1000126 iowrite32(data, priv->base + reg);
Kuninori Morimoto1e426ff2012-07-21 10:53:48 +1000127}
Kuninori Morimoto1e426ff2012-07-21 10:53:48 +1000128
Kuninori Morimotoe9137a52013-01-31 09:03:46 +0000129#define rcar_thermal_bset(p, r, m, d) _rcar_thermal_bset(p, REG_ ##r, m, d)
130static void _rcar_thermal_bset(struct rcar_thermal_priv *priv, u32 reg,
131 u32 mask, u32 data)
Kuninori Morimoto1e426ff2012-07-21 10:53:48 +1000132{
Kuninori Morimoto1e426ff2012-07-21 10:53:48 +1000133 u32 val;
134
Kuninori Morimoto1e426ff2012-07-21 10:53:48 +1000135 val = ioread32(priv->base + reg);
136 val &= ~mask;
137 val |= (data & mask);
138 iowrite32(val, priv->base + reg);
Kuninori Morimoto1e426ff2012-07-21 10:53:48 +1000139}
140
141/*
142 * zone device functions
143 */
Kuninori Morimotoe0a51722013-01-31 09:04:48 +0000144static int rcar_thermal_update_temp(struct rcar_thermal_priv *priv)
Kuninori Morimoto1e426ff2012-07-21 10:53:48 +1000145{
Kuninori Morimotof8f53e12013-01-31 09:03:11 +0000146 struct device *dev = rcar_priv_to_dev(priv);
147 int i;
Yoshihiro Shimoda913015c2015-01-07 10:13:11 +0900148 u32 ctemp, old, new;
Wei Yongjunf0e68fc2013-02-22 13:22:39 +0000149 int ret = -EINVAL;
Kuninori Morimoto1e426ff2012-07-21 10:53:48 +1000150
Kuninori Morimotob2bbc6a2013-01-31 09:03:22 +0000151 mutex_lock(&priv->lock);
152
Kuninori Morimotof8f53e12013-01-31 09:03:11 +0000153 /*
154 * TSC decides a value of CPTAP automatically,
155 * and this is the conditions which validate interrupt.
156 */
157 rcar_thermal_bset(priv, THSCR, CPCTL, CPCTL);
Kuninori Morimoto1e426ff2012-07-21 10:53:48 +1000158
Kuninori Morimotof8f53e12013-01-31 09:03:11 +0000159 ctemp = 0;
160 old = ~0;
161 for (i = 0; i < 128; i++) {
Kuninori Morimoto1e426ff2012-07-21 10:53:48 +1000162 /*
163 * we need to wait 300us after changing comparator offset
164 * to get stable temperature.
165 * see "Usage Notes" on datasheet
166 */
Kuninori Morimoto1e426ff2012-07-21 10:53:48 +1000167 udelay(300);
168
Kuninori Morimotof8f53e12013-01-31 09:03:11 +0000169 new = rcar_thermal_read(priv, THSSR) & CTEMP;
170 if (new == old) {
171 ctemp = new;
Kuninori Morimoto1e426ff2012-07-21 10:53:48 +1000172 break;
173 }
Kuninori Morimotof8f53e12013-01-31 09:03:11 +0000174 old = new;
Kuninori Morimoto1e426ff2012-07-21 10:53:48 +1000175 }
176
Kuninori Morimotof8f53e12013-01-31 09:03:11 +0000177 if (!ctemp) {
178 dev_err(dev, "thermal sensor was broken\n");
Wei Yongjunf0e68fc2013-02-22 13:22:39 +0000179 goto err_out_unlock;
Kuninori Morimotof8f53e12013-01-31 09:03:11 +0000180 }
181
Kuninori Morimotoe0a51722013-01-31 09:04:48 +0000182 /*
183 * enable IRQ
184 */
185 if (rcar_has_irq_support(priv)) {
186 rcar_thermal_write(priv, FILONOFF, 0);
Kuninori Morimotof8f53e12013-01-31 09:03:11 +0000187
Kuninori Morimotoe0a51722013-01-31 09:04:48 +0000188 /* enable Rising/Falling edge interrupt */
189 rcar_thermal_write(priv, POSNEG, 0x1);
190 rcar_thermal_write(priv, INTCTRL, (((ctemp - 0) << 8) |
191 ((ctemp - 1) << 0)));
192 }
193
194 dev_dbg(dev, "thermal%d %d -> %d\n", priv->id, priv->ctemp, ctemp);
195
196 priv->ctemp = ctemp;
Wei Yongjunf0e68fc2013-02-22 13:22:39 +0000197 ret = 0;
198err_out_unlock:
Kuninori Morimotoe0a51722013-01-31 09:04:48 +0000199 mutex_unlock(&priv->lock);
Wei Yongjunf0e68fc2013-02-22 13:22:39 +0000200 return ret;
Kuninori Morimotoe0a51722013-01-31 09:04:48 +0000201}
202
203static int rcar_thermal_get_temp(struct thermal_zone_device *zone,
204 unsigned long *temp)
205{
206 struct rcar_thermal_priv *priv = rcar_zone_to_priv(zone);
207
208 if (!rcar_has_irq_support(priv) || rcar_force_update_temp(priv))
209 rcar_thermal_update_temp(priv);
210
211 mutex_lock(&priv->lock);
212 *temp = MCELSIUS((priv->ctemp * 5) - 65);
Kuninori Morimotob2bbc6a2013-01-31 09:03:22 +0000213 mutex_unlock(&priv->lock);
214
Kuninori Morimoto1e426ff2012-07-21 10:53:48 +1000215 return 0;
216}
217
kuninori.morimoto.gx@renesas.comd2a73e22012-12-02 18:48:41 -0800218static int rcar_thermal_get_trip_type(struct thermal_zone_device *zone,
219 int trip, enum thermal_trip_type *type)
220{
221 struct rcar_thermal_priv *priv = rcar_zone_to_priv(zone);
Kuninori Morimoto3676d1d2013-01-31 09:03:33 +0000222 struct device *dev = rcar_priv_to_dev(priv);
kuninori.morimoto.gx@renesas.comd2a73e22012-12-02 18:48:41 -0800223
224 /* see rcar_thermal_get_temp() */
225 switch (trip) {
226 case 0: /* +90 <= temp */
227 *type = THERMAL_TRIP_CRITICAL;
228 break;
229 default:
Kuninori Morimoto3676d1d2013-01-31 09:03:33 +0000230 dev_err(dev, "rcar driver trip error\n");
kuninori.morimoto.gx@renesas.comd2a73e22012-12-02 18:48:41 -0800231 return -EINVAL;
232 }
233
234 return 0;
235}
236
237static int rcar_thermal_get_trip_temp(struct thermal_zone_device *zone,
238 int trip, unsigned long *temp)
239{
240 struct rcar_thermal_priv *priv = rcar_zone_to_priv(zone);
Kuninori Morimoto3676d1d2013-01-31 09:03:33 +0000241 struct device *dev = rcar_priv_to_dev(priv);
kuninori.morimoto.gx@renesas.comd2a73e22012-12-02 18:48:41 -0800242
243 /* see rcar_thermal_get_temp() */
244 switch (trip) {
245 case 0: /* +90 <= temp */
246 *temp = MCELSIUS(90);
247 break;
248 default:
Kuninori Morimoto3676d1d2013-01-31 09:03:33 +0000249 dev_err(dev, "rcar driver trip error\n");
kuninori.morimoto.gx@renesas.comd2a73e22012-12-02 18:48:41 -0800250 return -EINVAL;
251 }
252
253 return 0;
254}
255
256static int rcar_thermal_notify(struct thermal_zone_device *zone,
257 int trip, enum thermal_trip_type type)
258{
259 struct rcar_thermal_priv *priv = rcar_zone_to_priv(zone);
Kuninori Morimoto3676d1d2013-01-31 09:03:33 +0000260 struct device *dev = rcar_priv_to_dev(priv);
kuninori.morimoto.gx@renesas.comd2a73e22012-12-02 18:48:41 -0800261
262 switch (type) {
263 case THERMAL_TRIP_CRITICAL:
264 /* FIXME */
Kuninori Morimoto3676d1d2013-01-31 09:03:33 +0000265 dev_warn(dev, "Thermal reached to critical temperature\n");
kuninori.morimoto.gx@renesas.comd2a73e22012-12-02 18:48:41 -0800266 break;
267 default:
268 break;
269 }
270
271 return 0;
272}
273
Kuninori Morimoto1e426ff2012-07-21 10:53:48 +1000274static struct thermal_zone_device_ops rcar_thermal_zone_ops = {
kuninori.morimoto.gx@renesas.comd2a73e22012-12-02 18:48:41 -0800275 .get_temp = rcar_thermal_get_temp,
276 .get_trip_type = rcar_thermal_get_trip_type,
277 .get_trip_temp = rcar_thermal_get_trip_temp,
278 .notify = rcar_thermal_notify,
Kuninori Morimoto1e426ff2012-07-21 10:53:48 +1000279};
280
281/*
Kuninori Morimotoe0a51722013-01-31 09:04:48 +0000282 * interrupt
283 */
284#define rcar_thermal_irq_enable(p) _rcar_thermal_irq_ctrl(p, 1)
285#define rcar_thermal_irq_disable(p) _rcar_thermal_irq_ctrl(p, 0)
286static void _rcar_thermal_irq_ctrl(struct rcar_thermal_priv *priv, int enable)
287{
288 struct rcar_thermal_common *common = priv->common;
289 unsigned long flags;
290 u32 mask = 0x3 << rcar_id_to_shift(priv); /* enable Rising/Falling */
291
292 spin_lock_irqsave(&common->lock, flags);
293
294 rcar_thermal_common_bset(common, INTMSK, mask, enable ? 0 : mask);
295
296 spin_unlock_irqrestore(&common->lock, flags);
297}
298
299static void rcar_thermal_work(struct work_struct *work)
300{
301 struct rcar_thermal_priv *priv;
Patrick Titiano94771652014-02-28 14:10:04 +0100302 unsigned long cctemp, nctemp;
Kuninori Morimotoe0a51722013-01-31 09:04:48 +0000303
304 priv = container_of(work, struct rcar_thermal_priv, work.work);
305
Patrick Titiano94771652014-02-28 14:10:04 +0100306 rcar_thermal_get_temp(priv->zone, &cctemp);
Kuninori Morimotoe0a51722013-01-31 09:04:48 +0000307 rcar_thermal_update_temp(priv);
308 rcar_thermal_irq_enable(priv);
Patrick Titiano94771652014-02-28 14:10:04 +0100309
310 rcar_thermal_get_temp(priv->zone, &nctemp);
311 if (nctemp != cctemp)
312 thermal_zone_device_update(priv->zone);
Kuninori Morimotoe0a51722013-01-31 09:04:48 +0000313}
314
315static u32 rcar_thermal_had_changed(struct rcar_thermal_priv *priv, u32 status)
316{
317 struct device *dev = rcar_priv_to_dev(priv);
318
319 status = (status >> rcar_id_to_shift(priv)) & 0x3;
320
Patrick Titiano206c0cb2014-02-28 14:10:03 +0100321 if (status) {
Kuninori Morimotoe0a51722013-01-31 09:04:48 +0000322 dev_dbg(dev, "thermal%d %s%s\n",
323 priv->id,
324 (status & 0x2) ? "Rising " : "",
325 (status & 0x1) ? "Falling" : "");
326 }
327
328 return status;
329}
330
331static irqreturn_t rcar_thermal_irq(int irq, void *data)
332{
333 struct rcar_thermal_common *common = data;
334 struct rcar_thermal_priv *priv;
335 unsigned long flags;
336 u32 status, mask;
337
338 spin_lock_irqsave(&common->lock, flags);
339
340 mask = rcar_thermal_common_read(common, INTMSK);
341 status = rcar_thermal_common_read(common, STR);
342 rcar_thermal_common_write(common, STR, 0x000F0F0F & mask);
343
344 spin_unlock_irqrestore(&common->lock, flags);
345
346 status = status & ~mask;
347
348 /*
349 * check the status
350 */
351 rcar_thermal_for_each_priv(priv, common) {
352 if (rcar_thermal_had_changed(priv, status)) {
353 rcar_thermal_irq_disable(priv);
354 schedule_delayed_work(&priv->work,
355 msecs_to_jiffies(300));
356 }
357 }
358
359 return IRQ_HANDLED;
360}
361
362/*
Kuninori Morimoto1e426ff2012-07-21 10:53:48 +1000363 * platform functions
364 */
365static int rcar_thermal_probe(struct platform_device *pdev)
366{
Kuninori Morimoto3676d1d2013-01-31 09:03:33 +0000367 struct rcar_thermal_common *common;
Kuninori Morimoto1e426ff2012-07-21 10:53:48 +1000368 struct rcar_thermal_priv *priv;
Kuninori Morimoto3676d1d2013-01-31 09:03:33 +0000369 struct device *dev = &pdev->dev;
370 struct resource *res, *irq;
371 int mres = 0;
372 int i;
Devendra Nagafb84d992013-03-04 16:52:47 +0000373 int ret = -ENODEV;
Kuninori Morimotoe0a51722013-01-31 09:04:48 +0000374 int idle = IDLE_INTERVAL;
Yoshihiro Shimoda11313742015-01-07 10:13:10 +0900375 u32 enr_bits = 0;
Kuninori Morimoto1e426ff2012-07-21 10:53:48 +1000376
Kuninori Morimoto3676d1d2013-01-31 09:03:33 +0000377 common = devm_kzalloc(dev, sizeof(*common), GFP_KERNEL);
Jingoo Hanb0a60d82014-05-07 15:03:25 +0900378 if (!common)
Kuninori Morimoto1e426ff2012-07-21 10:53:48 +1000379 return -ENOMEM;
Kuninori Morimoto1e426ff2012-07-21 10:53:48 +1000380
Kuninori Morimoto3676d1d2013-01-31 09:03:33 +0000381 INIT_LIST_HEAD(&common->head);
Kuninori Morimotoe0a51722013-01-31 09:04:48 +0000382 spin_lock_init(&common->lock);
Kuninori Morimoto3676d1d2013-01-31 09:03:33 +0000383 common->dev = dev;
384
Kuninori Morimoto51d45d22013-03-26 06:08:52 +0000385 pm_runtime_enable(dev);
386 pm_runtime_get_sync(dev);
387
Kuninori Morimoto3676d1d2013-01-31 09:03:33 +0000388 irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
389 if (irq) {
390 /*
391 * platform has IRQ support.
Geert Uytterhoevenee853ad2015-01-12 17:33:59 +0100392 * Then, driver uses common registers
Kuninori Morimoto3676d1d2013-01-31 09:03:33 +0000393 * rcar_has_irq_support() will be enabled
394 */
Wolfram Sangc28f6922013-05-10 08:17:11 +0000395 res = platform_get_resource(pdev, IORESOURCE_MEM, mres++);
Sachin Kamat50955262013-03-04 06:45:33 +0000396 common->base = devm_ioremap_resource(dev, res);
397 if (IS_ERR(common->base))
398 return PTR_ERR(common->base);
Kuninori Morimotoe0a51722013-01-31 09:04:48 +0000399
Geert Uytterhoeven6fe495e02014-01-07 19:57:16 +0100400 idle = 0; /* polling delay is not needed */
Kuninori Morimoto1e426ff2012-07-21 10:53:48 +1000401 }
402
Kuninori Morimoto3676d1d2013-01-31 09:03:33 +0000403 for (i = 0;; i++) {
404 res = platform_get_resource(pdev, IORESOURCE_MEM, mres++);
405 if (!res)
406 break;
407
408 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
409 if (!priv) {
Kuninori Morimoto1dc20822013-03-26 06:08:10 +0000410 ret = -ENOMEM;
411 goto error_unregister;
Kuninori Morimoto3676d1d2013-01-31 09:03:33 +0000412 }
413
Sachin Kamat50955262013-03-04 06:45:33 +0000414 priv->base = devm_ioremap_resource(dev, res);
Kuninori Morimoto1dc20822013-03-26 06:08:10 +0000415 if (IS_ERR(priv->base)) {
416 ret = PTR_ERR(priv->base);
417 goto error_unregister;
418 }
Kuninori Morimoto3676d1d2013-01-31 09:03:33 +0000419
420 priv->common = common;
Kuninori Morimotoe0a51722013-01-31 09:04:48 +0000421 priv->id = i;
Kuninori Morimoto3676d1d2013-01-31 09:03:33 +0000422 mutex_init(&priv->lock);
423 INIT_LIST_HEAD(&priv->list);
Kuninori Morimotoe0a51722013-01-31 09:04:48 +0000424 INIT_DELAYED_WORK(&priv->work, rcar_thermal_work);
425 rcar_thermal_update_temp(priv);
Kuninori Morimoto3676d1d2013-01-31 09:03:33 +0000426
427 priv->zone = thermal_zone_device_register("rcar_thermal",
428 1, 0, priv,
429 &rcar_thermal_zone_ops, NULL, 0,
Kuninori Morimotoe0a51722013-01-31 09:04:48 +0000430 idle);
Kuninori Morimoto3676d1d2013-01-31 09:03:33 +0000431 if (IS_ERR(priv->zone)) {
432 dev_err(dev, "can't register thermal zone\n");
Devendra Nagafb84d992013-03-04 16:52:47 +0000433 ret = PTR_ERR(priv->zone);
Kuninori Morimoto3676d1d2013-01-31 09:03:33 +0000434 goto error_unregister;
435 }
436
Kuninori Morimotoe0a51722013-01-31 09:04:48 +0000437 if (rcar_has_irq_support(priv))
438 rcar_thermal_irq_enable(priv);
Kuninori Morimoto1dc20822013-03-26 06:08:10 +0000439
440 list_move_tail(&priv->list, &common->head);
Yoshihiro Shimoda11313742015-01-07 10:13:10 +0900441
442 /* update ENR bits */
443 enr_bits |= 3 << (i * 8);
Kuninori Morimoto1e426ff2012-07-21 10:53:48 +1000444 }
445
Yoshihiro Shimoda11313742015-01-07 10:13:10 +0900446 /* enable temperature comparation */
Geert Uytterhoeven0b37a832015-02-23 16:37:24 +0100447 if (irq) {
448 ret = devm_request_irq(dev, irq->start, rcar_thermal_irq, 0,
449 dev_name(dev), common);
450 if (ret) {
451 dev_err(dev, "irq request failed\n ");
452 goto error_unregister;
453 }
454
Yoshihiro Shimoda11313742015-01-07 10:13:10 +0900455 rcar_thermal_common_write(common, ENR, enr_bits);
Geert Uytterhoeven0b37a832015-02-23 16:37:24 +0100456 }
Yoshihiro Shimoda11313742015-01-07 10:13:10 +0900457
Kuninori Morimoto3676d1d2013-01-31 09:03:33 +0000458 platform_set_drvdata(pdev, common);
Kuninori Morimoto1e426ff2012-07-21 10:53:48 +1000459
Laurent Pinchart3db46c92013-05-14 23:00:32 +0000460 dev_info(dev, "%d sensor probed\n", i);
Kuninori Morimoto1e426ff2012-07-21 10:53:48 +1000461
462 return 0;
Kuninori Morimoto3676d1d2013-01-31 09:03:33 +0000463
464error_unregister:
Kuninori Morimoto1dc20822013-03-26 06:08:10 +0000465 rcar_thermal_for_each_priv(priv, common) {
Kuninori Morimoto1dc20822013-03-26 06:08:10 +0000466 if (rcar_has_irq_support(priv))
467 rcar_thermal_irq_disable(priv);
Geert Uytterhoevenac71c702015-02-23 16:37:25 +0100468 thermal_zone_device_unregister(priv->zone);
Kuninori Morimoto1dc20822013-03-26 06:08:10 +0000469 }
Kuninori Morimoto3676d1d2013-01-31 09:03:33 +0000470
Geert Uytterhoeven09be5112014-04-14 19:02:55 +0200471 pm_runtime_put(dev);
Kuninori Morimoto51d45d22013-03-26 06:08:52 +0000472 pm_runtime_disable(dev);
473
Devendra Nagafb84d992013-03-04 16:52:47 +0000474 return ret;
Kuninori Morimoto1e426ff2012-07-21 10:53:48 +1000475}
476
477static int rcar_thermal_remove(struct platform_device *pdev)
478{
Kuninori Morimoto3676d1d2013-01-31 09:03:33 +0000479 struct rcar_thermal_common *common = platform_get_drvdata(pdev);
Kuninori Morimoto51d45d22013-03-26 06:08:52 +0000480 struct device *dev = &pdev->dev;
Kuninori Morimoto3676d1d2013-01-31 09:03:33 +0000481 struct rcar_thermal_priv *priv;
Kuninori Morimoto1e426ff2012-07-21 10:53:48 +1000482
Kuninori Morimoto1dc20822013-03-26 06:08:10 +0000483 rcar_thermal_for_each_priv(priv, common) {
Kuninori Morimoto1dc20822013-03-26 06:08:10 +0000484 if (rcar_has_irq_support(priv))
485 rcar_thermal_irq_disable(priv);
Geert Uytterhoevenac71c702015-02-23 16:37:25 +0100486 thermal_zone_device_unregister(priv->zone);
Kuninori Morimoto1dc20822013-03-26 06:08:10 +0000487 }
Kuninori Morimoto3676d1d2013-01-31 09:03:33 +0000488
Geert Uytterhoeven09be5112014-04-14 19:02:55 +0200489 pm_runtime_put(dev);
Kuninori Morimoto51d45d22013-03-26 06:08:52 +0000490 pm_runtime_disable(dev);
491
Kuninori Morimoto1e426ff2012-07-21 10:53:48 +1000492 return 0;
493}
494
Arnd Bergmannf5b6d452013-02-14 23:26:58 +0100495static const struct of_device_id rcar_thermal_dt_ids[] = {
Kuninori Morimoto76cc1882013-01-31 09:05:26 +0000496 { .compatible = "renesas,rcar-thermal", },
497 {},
498};
499MODULE_DEVICE_TABLE(of, rcar_thermal_dt_ids);
500
Kuninori Morimoto1e426ff2012-07-21 10:53:48 +1000501static struct platform_driver rcar_thermal_driver = {
502 .driver = {
503 .name = "rcar_thermal",
Kuninori Morimoto76cc1882013-01-31 09:05:26 +0000504 .of_match_table = rcar_thermal_dt_ids,
Kuninori Morimoto1e426ff2012-07-21 10:53:48 +1000505 },
506 .probe = rcar_thermal_probe,
507 .remove = rcar_thermal_remove,
508};
509module_platform_driver(rcar_thermal_driver);
510
511MODULE_LICENSE("GPL");
512MODULE_DESCRIPTION("R-Car THS/TSC thermal sensor driver");
513MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");