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Thomas Gleixner74ba9202019-05-20 09:19:02 +02001// SPDX-License-Identifier: GPL-2.0-or-later
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +01002/*
3 * adt7x10.c - Part of lm_sensors, Linux kernel modules for hardware
4 * monitoring
5 * This driver handles the ADT7410 and compatible digital temperature sensors.
6 * Hartmut Knaack <knaack.h@gmx.de> 2012-07-22
7 * based on lm75.c by Frodo Looijaard <frodol@dds.nl>
8 * and adt7410.c from iio-staging by Sonic Zhang <sonic.zhang@analog.com>
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +01009 */
10
Cosmin Tanislava748d302021-12-21 23:58:37 +020011#include <linux/device.h>
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +010012#include <linux/module.h>
13#include <linux/init.h>
14#include <linux/slab.h>
15#include <linux/jiffies.h>
16#include <linux/hwmon.h>
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +010017#include <linux/err.h>
18#include <linux/mutex.h>
19#include <linux/delay.h>
Lars-Peter Clausen4b5e5362013-03-12 11:38:47 +010020#include <linux/interrupt.h>
Guenter Roeckf5320702021-12-23 10:32:05 -080021#include <linux/regmap.h>
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +010022
23#include "adt7x10.h"
24
25/*
26 * ADT7X10 status
27 */
28#define ADT7X10_STAT_T_LOW (1 << 4)
29#define ADT7X10_STAT_T_HIGH (1 << 5)
30#define ADT7X10_STAT_T_CRIT (1 << 6)
31#define ADT7X10_STAT_NOT_RDY (1 << 7)
32
33/*
34 * ADT7X10 config
35 */
36#define ADT7X10_FAULT_QUEUE_MASK (1 << 0 | 1 << 1)
37#define ADT7X10_CT_POLARITY (1 << 2)
38#define ADT7X10_INT_POLARITY (1 << 3)
39#define ADT7X10_EVENT_MODE (1 << 4)
40#define ADT7X10_MODE_MASK (1 << 5 | 1 << 6)
41#define ADT7X10_FULL (0 << 5 | 0 << 6)
42#define ADT7X10_PD (1 << 5 | 1 << 6)
43#define ADT7X10_RESOLUTION (1 << 7)
44
45/*
46 * ADT7X10 masks
47 */
48#define ADT7X10_T13_VALUE_MASK 0xFFF8
49#define ADT7X10_T_HYST_MASK 0xF
50
51/* straight from the datasheet */
52#define ADT7X10_TEMP_MIN (-55000)
53#define ADT7X10_TEMP_MAX 150000
54
55/* Each client has this additional data */
56struct adt7x10_data {
Guenter Roeckf5320702021-12-23 10:32:05 -080057 struct regmap *regmap;
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +010058 struct mutex update_lock;
59 u8 config;
60 u8 oldconfig;
Guenter Roeckf5320702021-12-23 10:32:05 -080061 bool valid; /* true if temperature valid */
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +010062};
63
Cosmin Tanislava748d302021-12-21 23:58:37 +020064enum {
65 adt7x10_temperature = 0,
66 adt7x10_t_alarm_high,
67 adt7x10_t_alarm_low,
68 adt7x10_t_crit,
69};
70
71static const u8 ADT7X10_REG_TEMP[] = {
72 [adt7x10_temperature] = ADT7X10_TEMPERATURE, /* input */
73 [adt7x10_t_alarm_high] = ADT7X10_T_ALARM_HIGH, /* high */
74 [adt7x10_t_alarm_low] = ADT7X10_T_ALARM_LOW, /* low */
75 [adt7x10_t_crit] = ADT7X10_T_CRIT, /* critical */
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +010076};
77
Lars-Peter Clausen4b5e5362013-03-12 11:38:47 +010078static irqreturn_t adt7x10_irq_handler(int irq, void *private)
79{
80 struct device *dev = private;
Guenter Roeckf5320702021-12-23 10:32:05 -080081 struct adt7x10_data *d = dev_get_drvdata(dev);
82 unsigned int status;
83 int ret;
Lars-Peter Clausen4b5e5362013-03-12 11:38:47 +010084
Guenter Roeckf5320702021-12-23 10:32:05 -080085 ret = regmap_read(d->regmap, ADT7X10_STATUS, &status);
86 if (ret < 0)
Lars-Peter Clausen4b5e5362013-03-12 11:38:47 +010087 return IRQ_HANDLED;
88
89 if (status & ADT7X10_STAT_T_HIGH)
Cosmin Tanislava7a57312021-12-21 23:58:41 +020090 hwmon_notify_event(dev, hwmon_temp, hwmon_temp_max_alarm, 0);
Lars-Peter Clausen4b5e5362013-03-12 11:38:47 +010091 if (status & ADT7X10_STAT_T_LOW)
Cosmin Tanislava7a57312021-12-21 23:58:41 +020092 hwmon_notify_event(dev, hwmon_temp, hwmon_temp_min_alarm, 0);
Lars-Peter Clausen4b5e5362013-03-12 11:38:47 +010093 if (status & ADT7X10_STAT_T_CRIT)
Cosmin Tanislava7a57312021-12-21 23:58:41 +020094 hwmon_notify_event(dev, hwmon_temp, hwmon_temp_crit_alarm, 0);
Lars-Peter Clausen4b5e5362013-03-12 11:38:47 +010095
96 return IRQ_HANDLED;
97}
98
Guenter Roeckf5320702021-12-23 10:32:05 -080099static int adt7x10_temp_ready(struct regmap *regmap)
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +0100100{
Guenter Roeckf5320702021-12-23 10:32:05 -0800101 unsigned int status;
102 int i, ret;
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +0100103
104 for (i = 0; i < 6; i++) {
Guenter Roeckf5320702021-12-23 10:32:05 -0800105 ret = regmap_read(regmap, ADT7X10_STATUS, &status);
106 if (ret < 0)
107 return ret;
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +0100108 if (!(status & ADT7X10_STAT_NOT_RDY))
109 return 0;
110 msleep(60);
111 }
112 return -ETIMEDOUT;
113}
114
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +0100115static s16 ADT7X10_TEMP_TO_REG(long temp)
116{
117 return DIV_ROUND_CLOSEST(clamp_val(temp, ADT7X10_TEMP_MIN,
Guenter Roeckf5320702021-12-23 10:32:05 -0800118 ADT7X10_TEMP_MAX) * 128, 1000);
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +0100119}
120
121static int ADT7X10_REG_TO_TEMP(struct adt7x10_data *data, s16 reg)
122{
123 /* in 13 bit mode, bits 0-2 are status flags - mask them out */
124 if (!(data->config & ADT7X10_RESOLUTION))
125 reg &= ADT7X10_T13_VALUE_MASK;
126 /*
127 * temperature is stored in twos complement format, in steps of
128 * 1/128°C
129 */
130 return DIV_ROUND_CLOSEST(reg * 1000, 128);
131}
132
133/*-----------------------------------------------------------------------*/
134
Cosmin Tanislava748d302021-12-21 23:58:37 +0200135static int adt7x10_temp_read(struct adt7x10_data *data, int index, long *val)
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +0100136{
Cosmin Tanislava748d302021-12-21 23:58:37 +0200137 unsigned int regval;
Guenter Roeckf5320702021-12-23 10:32:05 -0800138 int ret;
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +0100139
Guenter Roeckf5320702021-12-23 10:32:05 -0800140 mutex_lock(&data->update_lock);
Cosmin Tanislava748d302021-12-21 23:58:37 +0200141 if (index == adt7x10_temperature && !data->valid) {
Guenter Roeckf5320702021-12-23 10:32:05 -0800142 /* wait for valid temperature */
143 ret = adt7x10_temp_ready(data->regmap);
144 if (ret) {
145 mutex_unlock(&data->update_lock);
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +0100146 return ret;
Guenter Roeckf5320702021-12-23 10:32:05 -0800147 }
148 data->valid = true;
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +0100149 }
Guenter Roeckf5320702021-12-23 10:32:05 -0800150 mutex_unlock(&data->update_lock);
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +0100151
Cosmin Tanislava748d302021-12-21 23:58:37 +0200152 ret = regmap_read(data->regmap, ADT7X10_REG_TEMP[index], &regval);
Guenter Roeckf5320702021-12-23 10:32:05 -0800153 if (ret)
154 return ret;
155
Cosmin Tanislava748d302021-12-21 23:58:37 +0200156 *val = ADT7X10_REG_TO_TEMP(data, regval);
157 return 0;
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +0100158}
159
Cosmin Tanislava748d302021-12-21 23:58:37 +0200160static int adt7x10_temp_write(struct adt7x10_data *data, int index, long temp)
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +0100161{
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +0100162 int ret;
163
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +0100164 mutex_lock(&data->update_lock);
Cosmin Tanislava748d302021-12-21 23:58:37 +0200165 ret = regmap_write(data->regmap, ADT7X10_REG_TEMP[index],
Guenter Roeckf5320702021-12-23 10:32:05 -0800166 ADT7X10_TEMP_TO_REG(temp));
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +0100167 mutex_unlock(&data->update_lock);
Cosmin Tanislava748d302021-12-21 23:58:37 +0200168 return ret;
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +0100169}
170
Cosmin Tanislava748d302021-12-21 23:58:37 +0200171static int adt7x10_hyst_read(struct adt7x10_data *data, int index, long *val)
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +0100172{
Guenter Roeckf5320702021-12-23 10:32:05 -0800173 int hyst, temp, ret;
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +0100174
Guenter Roeckf5320702021-12-23 10:32:05 -0800175 mutex_lock(&data->update_lock);
176 ret = regmap_read(data->regmap, ADT7X10_T_HYST, &hyst);
177 if (ret) {
178 mutex_unlock(&data->update_lock);
179 return ret;
180 }
181
Cosmin Tanislava748d302021-12-21 23:58:37 +0200182 ret = regmap_read(data->regmap, ADT7X10_REG_TEMP[index], &temp);
Guenter Roeckf5320702021-12-23 10:32:05 -0800183 mutex_unlock(&data->update_lock);
184 if (ret)
185 return ret;
186
187 hyst = (hyst & ADT7X10_T_HYST_MASK) * 1000;
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +0100188
189 /*
190 * hysteresis is stored as a 4 bit offset in the device, convert it
191 * to an absolute value
192 */
Cosmin Tanislava748d302021-12-21 23:58:37 +0200193 /* min has positive offset, others have negative */
194 if (index == adt7x10_t_alarm_low)
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +0100195 hyst = -hyst;
Guenter Roeckf5320702021-12-23 10:32:05 -0800196
Cosmin Tanislava748d302021-12-21 23:58:37 +0200197 *val = ADT7X10_REG_TO_TEMP(data, temp) - hyst;
198 return 0;
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +0100199}
200
Cosmin Tanislava748d302021-12-21 23:58:37 +0200201static int adt7x10_hyst_write(struct adt7x10_data *data, long hyst)
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +0100202{
Guenter Roeckf5320702021-12-23 10:32:05 -0800203 unsigned int regval;
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +0100204 int limit, ret;
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +0100205
Guenter Roeckf5320702021-12-23 10:32:05 -0800206 mutex_lock(&data->update_lock);
207
208 /* convert absolute hysteresis value to a 4 bit delta value */
209 ret = regmap_read(data->regmap, ADT7X10_T_ALARM_HIGH, &regval);
210 if (ret < 0)
211 goto abort;
212
213 limit = ADT7X10_REG_TO_TEMP(data, regval);
214
215 hyst = clamp_val(hyst, ADT7X10_TEMP_MIN, ADT7X10_TEMP_MAX);
216 regval = clamp_val(DIV_ROUND_CLOSEST(limit - hyst, 1000), 0,
217 ADT7X10_T_HYST_MASK);
218 ret = regmap_write(data->regmap, ADT7X10_T_HYST, regval);
219abort:
220 mutex_unlock(&data->update_lock);
Cosmin Tanislava748d302021-12-21 23:58:37 +0200221 return ret;
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +0100222}
223
Cosmin Tanislava748d302021-12-21 23:58:37 +0200224static int adt7x10_alarm_read(struct adt7x10_data *data, int index, long *val)
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +0100225{
Guenter Roeckf5320702021-12-23 10:32:05 -0800226 unsigned int status;
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +0100227 int ret;
228
Guenter Roeckf5320702021-12-23 10:32:05 -0800229 ret = regmap_read(data->regmap, ADT7X10_STATUS, &status);
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +0100230 if (ret < 0)
231 return ret;
232
Cosmin Tanislava748d302021-12-21 23:58:37 +0200233 *val = !!(status & index);
234
235 return 0;
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +0100236}
237
Cosmin Tanislava748d302021-12-21 23:58:37 +0200238static umode_t adt7x10_is_visible(const void *data,
239 enum hwmon_sensor_types type,
240 u32 attr, int channel)
241{
242 switch (attr) {
243 case hwmon_temp_max:
244 case hwmon_temp_min:
245 case hwmon_temp_crit:
246 case hwmon_temp_max_hyst:
247 return 0644;
248 case hwmon_temp_input:
249 case hwmon_temp_min_alarm:
250 case hwmon_temp_max_alarm:
251 case hwmon_temp_crit_alarm:
252 case hwmon_temp_min_hyst:
253 case hwmon_temp_crit_hyst:
254 return 0444;
255 default:
256 break;
257 }
258
259 return 0;
260}
261
262static int adt7x10_read(struct device *dev, enum hwmon_sensor_types type,
263 u32 attr, int channel, long *val)
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +0100264{
265 struct adt7x10_data *data = dev_get_drvdata(dev);
266
Cosmin Tanislava748d302021-12-21 23:58:37 +0200267 switch (attr) {
268 case hwmon_temp_input:
269 return adt7x10_temp_read(data, adt7x10_temperature, val);
270 case hwmon_temp_max:
271 return adt7x10_temp_read(data, adt7x10_t_alarm_high, val);
272 case hwmon_temp_min:
273 return adt7x10_temp_read(data, adt7x10_t_alarm_low, val);
274 case hwmon_temp_crit:
275 return adt7x10_temp_read(data, adt7x10_t_crit, val);
276 case hwmon_temp_max_hyst:
277 return adt7x10_hyst_read(data, adt7x10_t_alarm_high, val);
278 case hwmon_temp_min_hyst:
279 return adt7x10_hyst_read(data, adt7x10_t_alarm_low, val);
280 case hwmon_temp_crit_hyst:
281 return adt7x10_hyst_read(data, adt7x10_t_crit, val);
282 case hwmon_temp_min_alarm:
283 return adt7x10_alarm_read(data, ADT7X10_STAT_T_LOW, val);
284 case hwmon_temp_max_alarm:
285 return adt7x10_alarm_read(data, ADT7X10_STAT_T_HIGH, val);
286 case hwmon_temp_crit_alarm:
287 return adt7x10_alarm_read(data, ADT7X10_STAT_T_CRIT, val);
288 default:
289 return -EOPNOTSUPP;
290 }
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +0100291}
292
Cosmin Tanislava748d302021-12-21 23:58:37 +0200293static int adt7x10_write(struct device *dev, enum hwmon_sensor_types type,
294 u32 attr, int channel, long val)
295{
296 struct adt7x10_data *data = dev_get_drvdata(dev);
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +0100297
Cosmin Tanislava748d302021-12-21 23:58:37 +0200298 switch (attr) {
299 case hwmon_temp_max:
300 return adt7x10_temp_write(data, adt7x10_t_alarm_high, val);
301 case hwmon_temp_min:
302 return adt7x10_temp_write(data, adt7x10_t_alarm_low, val);
303 case hwmon_temp_crit:
304 return adt7x10_temp_write(data, adt7x10_t_crit, val);
305 case hwmon_temp_max_hyst:
306 return adt7x10_hyst_write(data, val);
307 default:
308 return -EOPNOTSUPP;
309 }
310}
311
312static const struct hwmon_channel_info *adt7x10_info[] = {
313 HWMON_CHANNEL_INFO(temp, HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_MIN |
314 HWMON_T_CRIT | HWMON_T_MAX_HYST | HWMON_T_MIN_HYST |
315 HWMON_T_CRIT_HYST | HWMON_T_MIN_ALARM |
316 HWMON_T_MAX_ALARM | HWMON_T_CRIT_ALARM),
317 NULL,
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +0100318};
319
Cosmin Tanislava748d302021-12-21 23:58:37 +0200320static const struct hwmon_ops adt7x10_hwmon_ops = {
321 .is_visible = adt7x10_is_visible,
322 .read = adt7x10_read,
323 .write = adt7x10_write,
324};
325
326static const struct hwmon_chip_info adt7x10_chip_info = {
327 .ops = &adt7x10_hwmon_ops,
328 .info = adt7x10_info,
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +0100329};
330
Cosmin Tanislavaf910e92021-12-21 23:58:36 +0200331static void adt7x10_restore_config(void *private)
332{
333 struct adt7x10_data *data = private;
334
335 regmap_write(data->regmap, ADT7X10_CONFIG, data->oldconfig);
336}
337
Lars-Peter Clausen4b5e5362013-03-12 11:38:47 +0100338int adt7x10_probe(struct device *dev, const char *name, int irq,
Guenter Roeckf5320702021-12-23 10:32:05 -0800339 struct regmap *regmap)
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +0100340{
341 struct adt7x10_data *data;
Guenter Roeckf5320702021-12-23 10:32:05 -0800342 unsigned int config;
Cosmin Tanislava748d302021-12-21 23:58:37 +0200343 struct device *hdev;
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +0100344 int ret;
345
346 data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
347 if (!data)
348 return -ENOMEM;
349
Guenter Roeckf5320702021-12-23 10:32:05 -0800350 data->regmap = regmap;
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +0100351
352 dev_set_drvdata(dev, data);
353 mutex_init(&data->update_lock);
354
355 /* configure as specified */
Guenter Roeckf5320702021-12-23 10:32:05 -0800356 ret = regmap_read(regmap, ADT7X10_CONFIG, &config);
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +0100357 if (ret < 0) {
358 dev_dbg(dev, "Can't read config? %d\n", ret);
359 return ret;
360 }
Guenter Roeckf5320702021-12-23 10:32:05 -0800361 data->oldconfig = config;
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +0100362
363 /*
364 * Set to 16 bit resolution, continous conversion and comparator mode.
365 */
366 data->config = data->oldconfig;
Lars-Peter Clausen4b5e5362013-03-12 11:38:47 +0100367 data->config &= ~(ADT7X10_MODE_MASK | ADT7X10_CT_POLARITY |
368 ADT7X10_INT_POLARITY);
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +0100369 data->config |= ADT7X10_FULL | ADT7X10_RESOLUTION | ADT7X10_EVENT_MODE;
Lars-Peter Clausen4b5e5362013-03-12 11:38:47 +0100370
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +0100371 if (data->config != data->oldconfig) {
Guenter Roeckf5320702021-12-23 10:32:05 -0800372 ret = regmap_write(regmap, ADT7X10_CONFIG, data->config);
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +0100373 if (ret)
374 return ret;
Cosmin Tanislavaf910e92021-12-21 23:58:36 +0200375 ret = devm_add_action_or_reset(dev, adt7x10_restore_config, data);
376 if (ret)
377 return ret;
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +0100378 }
379 dev_dbg(dev, "Config %02x\n", data->config);
380
Cosmin Tanislava748d302021-12-21 23:58:37 +0200381 hdev = devm_hwmon_device_register_with_info(dev, name, data,
382 &adt7x10_chip_info, NULL);
383 if (IS_ERR(hdev))
384 return PTR_ERR(hdev);
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +0100385
Lars-Peter Clausen4b5e5362013-03-12 11:38:47 +0100386 if (irq > 0) {
Cosmin Tanislavf691adc2021-12-21 23:58:38 +0200387 ret = devm_request_threaded_irq(dev, irq, NULL,
388 adt7x10_irq_handler,
389 IRQF_TRIGGER_FALLING |
390 IRQF_ONESHOT,
Cosmin Tanislava7a57312021-12-21 23:58:41 +0200391 dev_name(dev), hdev);
Lars-Peter Clausen4b5e5362013-03-12 11:38:47 +0100392 if (ret)
Cosmin Tanislava748d302021-12-21 23:58:37 +0200393 return ret;
Lars-Peter Clausen4b5e5362013-03-12 11:38:47 +0100394 }
395
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +0100396 return 0;
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +0100397}
398EXPORT_SYMBOL_GPL(adt7x10_probe);
399
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +0100400#ifdef CONFIG_PM_SLEEP
401
402static int adt7x10_suspend(struct device *dev)
403{
404 struct adt7x10_data *data = dev_get_drvdata(dev);
405
Guenter Roeckf5320702021-12-23 10:32:05 -0800406 return regmap_write(data->regmap, ADT7X10_CONFIG,
407 data->config | ADT7X10_PD);
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +0100408}
409
410static int adt7x10_resume(struct device *dev)
411{
412 struct adt7x10_data *data = dev_get_drvdata(dev);
413
Guenter Roeckf5320702021-12-23 10:32:05 -0800414 return regmap_write(data->regmap, ADT7X10_CONFIG, data->config);
Lars-Peter Clausen51c2a482013-03-12 11:38:46 +0100415}
416
417SIMPLE_DEV_PM_OPS(adt7x10_dev_pm_ops, adt7x10_suspend, adt7x10_resume);
418EXPORT_SYMBOL_GPL(adt7x10_dev_pm_ops);
419
420#endif /* CONFIG_PM_SLEEP */
421
422MODULE_AUTHOR("Hartmut Knaack");
423MODULE_DESCRIPTION("ADT7410/ADT7420, ADT7310/ADT7320 common code");
424MODULE_LICENSE("GPL");