2 smsc47m192.c - Support for hardware monitoring block of
3 SMSC LPC47M192 and compatible Super I/O chips
5 Copyright (C) 2006 Hartmut Rick <linux@rick.claranet.de>
7 Derived from lm78.c and other chip drivers.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 #include <linux/module.h>
25 #include <linux/init.h>
26 #include <linux/slab.h>
27 #include <linux/jiffies.h>
28 #include <linux/i2c.h>
29 #include <linux/hwmon.h>
30 #include <linux/hwmon-sysfs.h>
31 #include <linux/hwmon-vid.h>
32 #include <linux/err.h>
33 #include <linux/sysfs.h>
34 #include <linux/mutex.h>
36 /* Addresses to scan */
37 static const unsigned short normal_i2c[] = { 0x2c, 0x2d, I2C_CLIENT_END };
39 /* SMSC47M192 registers */
40 #define SMSC47M192_REG_IN(nr) ((nr)<6 ? (0x20 + (nr)) : \
42 #define SMSC47M192_REG_IN_MAX(nr) ((nr)<6 ? (0x2b + (nr) * 2) : \
43 (0x54 + (((nr) - 6) * 2)))
44 #define SMSC47M192_REG_IN_MIN(nr) ((nr)<6 ? (0x2c + (nr) * 2) : \
45 (0x55 + (((nr) - 6) * 2)))
46 static u8 SMSC47M192_REG_TEMP[3] = { 0x27, 0x26, 0x52 };
47 static u8 SMSC47M192_REG_TEMP_MAX[3] = { 0x39, 0x37, 0x58 };
48 static u8 SMSC47M192_REG_TEMP_MIN[3] = { 0x3A, 0x38, 0x59 };
49 #define SMSC47M192_REG_TEMP_OFFSET(nr) ((nr)==2 ? 0x1e : 0x1f)
50 #define SMSC47M192_REG_ALARM1 0x41
51 #define SMSC47M192_REG_ALARM2 0x42
52 #define SMSC47M192_REG_VID 0x47
53 #define SMSC47M192_REG_VID4 0x49
54 #define SMSC47M192_REG_CONFIG 0x40
55 #define SMSC47M192_REG_SFR 0x4f
56 #define SMSC47M192_REG_COMPANY_ID 0x3e
57 #define SMSC47M192_REG_VERSION 0x3f
59 /* generalised scaling with integer rounding */
60 static inline int SCALE(long val, int mul, int div)
63 return (val * mul - div / 2) / div;
65 return (val * mul + div / 2) / div;
70 /* smsc47m192 internally scales voltage measurements */
71 static const u16 nom_mv[] = { 2500, 2250, 3300, 5000, 12000, 3300, 1500, 1800 };
73 static inline unsigned int IN_FROM_REG(u8 reg, int n)
75 return SCALE(reg, nom_mv[n], 192);
78 static inline u8 IN_TO_REG(unsigned long val, int n)
80 return SENSORS_LIMIT(SCALE(val, 192, nom_mv[n]), 0, 255);
83 /* TEMP: 0.001 degC units (-128C to +127C)
84 REG: 1C/bit, two's complement */
85 static inline s8 TEMP_TO_REG(int val)
87 return SCALE(SENSORS_LIMIT(val, -128000, 127000), 1, 1000);
90 static inline int TEMP_FROM_REG(s8 val)
95 struct smsc47m192_data {
96 struct device *hwmon_dev;
97 struct mutex update_lock;
98 char valid; /* !=0 if following fields are valid */
99 unsigned long last_updated; /* In jiffies */
101 u8 in[8]; /* Register value */
102 u8 in_max[8]; /* Register value */
103 u8 in_min[8]; /* Register value */
104 s8 temp[3]; /* Register value */
105 s8 temp_max[3]; /* Register value */
106 s8 temp_min[3]; /* Register value */
107 s8 temp_offset[3]; /* Register value */
108 u16 alarms; /* Register encoding, combined */
109 u8 vid; /* Register encoding, combined */
113 static int smsc47m192_probe(struct i2c_client *client,
114 const struct i2c_device_id *id);
115 static int smsc47m192_detect(struct i2c_client *client,
116 struct i2c_board_info *info);
117 static int smsc47m192_remove(struct i2c_client *client);
118 static struct smsc47m192_data *smsc47m192_update_device(struct device *dev);
120 static const struct i2c_device_id smsc47m192_id[] = {
124 MODULE_DEVICE_TABLE(i2c, smsc47m192_id);
126 static struct i2c_driver smsc47m192_driver = {
127 .class = I2C_CLASS_HWMON,
129 .name = "smsc47m192",
131 .probe = smsc47m192_probe,
132 .remove = smsc47m192_remove,
133 .id_table = smsc47m192_id,
134 .detect = smsc47m192_detect,
135 .address_list = normal_i2c,
139 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
142 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
143 int nr = sensor_attr->index;
144 struct smsc47m192_data *data = smsc47m192_update_device(dev);
145 return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr], nr));
148 static ssize_t show_in_min(struct device *dev, struct device_attribute *attr,
151 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
152 int nr = sensor_attr->index;
153 struct smsc47m192_data *data = smsc47m192_update_device(dev);
154 return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[nr], nr));
157 static ssize_t show_in_max(struct device *dev, struct device_attribute *attr,
160 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
161 int nr = sensor_attr->index;
162 struct smsc47m192_data *data = smsc47m192_update_device(dev);
163 return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[nr], nr));
166 static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
167 const char *buf, size_t count)
169 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
170 int nr = sensor_attr->index;
171 struct i2c_client *client = to_i2c_client(dev);
172 struct smsc47m192_data *data = i2c_get_clientdata(client);
173 unsigned long val = simple_strtoul(buf, NULL, 10);
175 mutex_lock(&data->update_lock);
176 data->in_min[nr] = IN_TO_REG(val, nr);
177 i2c_smbus_write_byte_data(client, SMSC47M192_REG_IN_MIN(nr),
179 mutex_unlock(&data->update_lock);
183 static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
184 const char *buf, size_t count)
186 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
187 int nr = sensor_attr->index;
188 struct i2c_client *client = to_i2c_client(dev);
189 struct smsc47m192_data *data = i2c_get_clientdata(client);
190 unsigned long val = simple_strtoul(buf, NULL, 10);
192 mutex_lock(&data->update_lock);
193 data->in_max[nr] = IN_TO_REG(val, nr);
194 i2c_smbus_write_byte_data(client, SMSC47M192_REG_IN_MAX(nr),
196 mutex_unlock(&data->update_lock);
200 #define show_in_offset(offset) \
201 static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \
202 show_in, NULL, offset); \
203 static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
204 show_in_min, set_in_min, offset); \
205 static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
206 show_in_max, set_in_max, offset);
218 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
221 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
222 int nr = sensor_attr->index;
223 struct smsc47m192_data *data = smsc47m192_update_device(dev);
224 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr]));
227 static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr,
230 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
231 int nr = sensor_attr->index;
232 struct smsc47m192_data *data = smsc47m192_update_device(dev);
233 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[nr]));
236 static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr,
239 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
240 int nr = sensor_attr->index;
241 struct smsc47m192_data *data = smsc47m192_update_device(dev);
242 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[nr]));
245 static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr,
246 const char *buf, size_t count)
248 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
249 int nr = sensor_attr->index;
250 struct i2c_client *client = to_i2c_client(dev);
251 struct smsc47m192_data *data = i2c_get_clientdata(client);
252 long val = simple_strtol(buf, NULL, 10);
254 mutex_lock(&data->update_lock);
255 data->temp_min[nr] = TEMP_TO_REG(val);
256 i2c_smbus_write_byte_data(client, SMSC47M192_REG_TEMP_MIN[nr],
258 mutex_unlock(&data->update_lock);
262 static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
263 const char *buf, size_t count)
265 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
266 int nr = sensor_attr->index;
267 struct i2c_client *client = to_i2c_client(dev);
268 struct smsc47m192_data *data = i2c_get_clientdata(client);
269 long val = simple_strtol(buf, NULL, 10);
271 mutex_lock(&data->update_lock);
272 data->temp_max[nr] = TEMP_TO_REG(val);
273 i2c_smbus_write_byte_data(client, SMSC47M192_REG_TEMP_MAX[nr],
275 mutex_unlock(&data->update_lock);
279 static ssize_t show_temp_offset(struct device *dev, struct device_attribute
282 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
283 int nr = sensor_attr->index;
284 struct smsc47m192_data *data = smsc47m192_update_device(dev);
285 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_offset[nr]));
288 static ssize_t set_temp_offset(struct device *dev, struct device_attribute
289 *attr, const char *buf, size_t count)
291 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
292 int nr = sensor_attr->index;
293 struct i2c_client *client = to_i2c_client(dev);
294 struct smsc47m192_data *data = i2c_get_clientdata(client);
295 u8 sfr = i2c_smbus_read_byte_data(client, SMSC47M192_REG_SFR);
296 long val = simple_strtol(buf, NULL, 10);
298 mutex_lock(&data->update_lock);
299 data->temp_offset[nr] = TEMP_TO_REG(val);
301 i2c_smbus_write_byte_data(client,
302 SMSC47M192_REG_TEMP_OFFSET(nr), data->temp_offset[nr]);
303 else if (data->temp_offset[nr] != 0) {
304 /* offset[0] and offset[1] share the same register,
305 SFR bit 4 activates offset[0] */
306 i2c_smbus_write_byte_data(client, SMSC47M192_REG_SFR,
307 (sfr & 0xef) | (nr==0 ? 0x10 : 0));
308 data->temp_offset[1-nr] = 0;
309 i2c_smbus_write_byte_data(client,
310 SMSC47M192_REG_TEMP_OFFSET(nr), data->temp_offset[nr]);
311 } else if ((sfr & 0x10) == (nr==0 ? 0x10 : 0))
312 i2c_smbus_write_byte_data(client,
313 SMSC47M192_REG_TEMP_OFFSET(nr), 0);
314 mutex_unlock(&data->update_lock);
318 #define show_temp_index(index) \
319 static SENSOR_DEVICE_ATTR(temp##index##_input, S_IRUGO, \
320 show_temp, NULL, index-1); \
321 static SENSOR_DEVICE_ATTR(temp##index##_min, S_IRUGO | S_IWUSR, \
322 show_temp_min, set_temp_min, index-1); \
323 static SENSOR_DEVICE_ATTR(temp##index##_max, S_IRUGO | S_IWUSR, \
324 show_temp_max, set_temp_max, index-1); \
325 static SENSOR_DEVICE_ATTR(temp##index##_offset, S_IRUGO | S_IWUSR, \
326 show_temp_offset, set_temp_offset, index-1);
333 static ssize_t show_vid(struct device *dev, struct device_attribute *attr,
336 struct smsc47m192_data *data = smsc47m192_update_device(dev);
337 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
339 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL);
341 static ssize_t show_vrm(struct device *dev, struct device_attribute *attr,
344 struct smsc47m192_data *data = dev_get_drvdata(dev);
345 return sprintf(buf, "%d\n", data->vrm);
348 static ssize_t set_vrm(struct device *dev, struct device_attribute *attr,
349 const char *buf, size_t count)
351 struct smsc47m192_data *data = dev_get_drvdata(dev);
354 val = simple_strtoul(buf, NULL, 10);
361 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm);
364 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
367 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
368 int nr = sensor_attr->index;
369 struct smsc47m192_data *data = smsc47m192_update_device(dev);
370 return sprintf(buf, "%u\n", (data->alarms & nr) ? 1 : 0);
373 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 0x0010);
374 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 0x0020);
375 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 0x0040);
376 static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_alarm, NULL, 0x4000);
377 static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 0x8000);
378 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0x0001);
379 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 0x0002);
380 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 0x0004);
381 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 0x0008);
382 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 0x0100);
383 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 0x0200);
384 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 0x0400);
385 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 0x0800);
387 static struct attribute *smsc47m192_attributes[] = {
388 &sensor_dev_attr_in0_input.dev_attr.attr,
389 &sensor_dev_attr_in0_min.dev_attr.attr,
390 &sensor_dev_attr_in0_max.dev_attr.attr,
391 &sensor_dev_attr_in0_alarm.dev_attr.attr,
392 &sensor_dev_attr_in1_input.dev_attr.attr,
393 &sensor_dev_attr_in1_min.dev_attr.attr,
394 &sensor_dev_attr_in1_max.dev_attr.attr,
395 &sensor_dev_attr_in1_alarm.dev_attr.attr,
396 &sensor_dev_attr_in2_input.dev_attr.attr,
397 &sensor_dev_attr_in2_min.dev_attr.attr,
398 &sensor_dev_attr_in2_max.dev_attr.attr,
399 &sensor_dev_attr_in2_alarm.dev_attr.attr,
400 &sensor_dev_attr_in3_input.dev_attr.attr,
401 &sensor_dev_attr_in3_min.dev_attr.attr,
402 &sensor_dev_attr_in3_max.dev_attr.attr,
403 &sensor_dev_attr_in3_alarm.dev_attr.attr,
404 &sensor_dev_attr_in5_input.dev_attr.attr,
405 &sensor_dev_attr_in5_min.dev_attr.attr,
406 &sensor_dev_attr_in5_max.dev_attr.attr,
407 &sensor_dev_attr_in5_alarm.dev_attr.attr,
408 &sensor_dev_attr_in6_input.dev_attr.attr,
409 &sensor_dev_attr_in6_min.dev_attr.attr,
410 &sensor_dev_attr_in6_max.dev_attr.attr,
411 &sensor_dev_attr_in6_alarm.dev_attr.attr,
412 &sensor_dev_attr_in7_input.dev_attr.attr,
413 &sensor_dev_attr_in7_min.dev_attr.attr,
414 &sensor_dev_attr_in7_max.dev_attr.attr,
415 &sensor_dev_attr_in7_alarm.dev_attr.attr,
417 &sensor_dev_attr_temp1_input.dev_attr.attr,
418 &sensor_dev_attr_temp1_max.dev_attr.attr,
419 &sensor_dev_attr_temp1_min.dev_attr.attr,
420 &sensor_dev_attr_temp1_offset.dev_attr.attr,
421 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
422 &sensor_dev_attr_temp2_input.dev_attr.attr,
423 &sensor_dev_attr_temp2_max.dev_attr.attr,
424 &sensor_dev_attr_temp2_min.dev_attr.attr,
425 &sensor_dev_attr_temp2_offset.dev_attr.attr,
426 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
427 &sensor_dev_attr_temp2_fault.dev_attr.attr,
428 &sensor_dev_attr_temp3_input.dev_attr.attr,
429 &sensor_dev_attr_temp3_max.dev_attr.attr,
430 &sensor_dev_attr_temp3_min.dev_attr.attr,
431 &sensor_dev_attr_temp3_offset.dev_attr.attr,
432 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
433 &sensor_dev_attr_temp3_fault.dev_attr.attr,
435 &dev_attr_cpu0_vid.attr,
440 static const struct attribute_group smsc47m192_group = {
441 .attrs = smsc47m192_attributes,
444 static struct attribute *smsc47m192_attributes_in4[] = {
445 &sensor_dev_attr_in4_input.dev_attr.attr,
446 &sensor_dev_attr_in4_min.dev_attr.attr,
447 &sensor_dev_attr_in4_max.dev_attr.attr,
448 &sensor_dev_attr_in4_alarm.dev_attr.attr,
452 static const struct attribute_group smsc47m192_group_in4 = {
453 .attrs = smsc47m192_attributes_in4,
456 static void smsc47m192_init_client(struct i2c_client *client)
459 u8 config = i2c_smbus_read_byte_data(client, SMSC47M192_REG_CONFIG);
460 u8 sfr = i2c_smbus_read_byte_data(client, SMSC47M192_REG_SFR);
462 /* select cycle mode (pause 1 sec between updates) */
463 i2c_smbus_write_byte_data(client, SMSC47M192_REG_SFR,
464 (sfr & 0xfd) | 0x02);
465 if (!(config & 0x01)) {
466 /* initialize alarm limits */
467 for (i=0; i<8; i++) {
468 i2c_smbus_write_byte_data(client,
469 SMSC47M192_REG_IN_MIN(i), 0);
470 i2c_smbus_write_byte_data(client,
471 SMSC47M192_REG_IN_MAX(i), 0xff);
473 for (i=0; i<3; i++) {
474 i2c_smbus_write_byte_data(client,
475 SMSC47M192_REG_TEMP_MIN[i], 0x80);
476 i2c_smbus_write_byte_data(client,
477 SMSC47M192_REG_TEMP_MAX[i], 0x7f);
480 /* start monitoring */
481 i2c_smbus_write_byte_data(client, SMSC47M192_REG_CONFIG,
482 (config & 0xf7) | 0x01);
486 /* Return 0 if detection is successful, -ENODEV otherwise */
487 static int smsc47m192_detect(struct i2c_client *client,
488 struct i2c_board_info *info)
490 struct i2c_adapter *adapter = client->adapter;
493 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
496 /* Detection criteria from sensors_detect script */
497 version = i2c_smbus_read_byte_data(client, SMSC47M192_REG_VERSION);
498 if (i2c_smbus_read_byte_data(client,
499 SMSC47M192_REG_COMPANY_ID) == 0x55
500 && (version & 0xf0) == 0x20
501 && (i2c_smbus_read_byte_data(client,
502 SMSC47M192_REG_VID) & 0x70) == 0x00
503 && (i2c_smbus_read_byte_data(client,
504 SMSC47M192_REG_VID4) & 0xfe) == 0x80) {
505 dev_info(&adapter->dev,
506 "found SMSC47M192 or compatible, "
507 "version 2, stepping A%d\n", version & 0x0f);
509 dev_dbg(&adapter->dev,
510 "SMSC47M192 detection failed at 0x%02x\n",
515 strlcpy(info->type, "smsc47m192", I2C_NAME_SIZE);
520 static int smsc47m192_probe(struct i2c_client *client,
521 const struct i2c_device_id *id)
523 struct smsc47m192_data *data;
527 data = kzalloc(sizeof(struct smsc47m192_data), GFP_KERNEL);
533 i2c_set_clientdata(client, data);
534 data->vrm = vid_which_vrm();
535 mutex_init(&data->update_lock);
537 /* Initialize the SMSC47M192 chip */
538 smsc47m192_init_client(client);
540 /* Register sysfs hooks */
541 if ((err = sysfs_create_group(&client->dev.kobj, &smsc47m192_group)))
544 /* Pin 110 is either in4 (+12V) or VID4 */
545 config = i2c_smbus_read_byte_data(client, SMSC47M192_REG_CONFIG);
546 if (!(config & 0x20)) {
547 if ((err = sysfs_create_group(&client->dev.kobj,
548 &smsc47m192_group_in4)))
549 goto exit_remove_files;
552 data->hwmon_dev = hwmon_device_register(&client->dev);
553 if (IS_ERR(data->hwmon_dev)) {
554 err = PTR_ERR(data->hwmon_dev);
555 goto exit_remove_files;
561 sysfs_remove_group(&client->dev.kobj, &smsc47m192_group);
562 sysfs_remove_group(&client->dev.kobj, &smsc47m192_group_in4);
569 static int smsc47m192_remove(struct i2c_client *client)
571 struct smsc47m192_data *data = i2c_get_clientdata(client);
573 hwmon_device_unregister(data->hwmon_dev);
574 sysfs_remove_group(&client->dev.kobj, &smsc47m192_group);
575 sysfs_remove_group(&client->dev.kobj, &smsc47m192_group_in4);
582 static struct smsc47m192_data *smsc47m192_update_device(struct device *dev)
584 struct i2c_client *client = to_i2c_client(dev);
585 struct smsc47m192_data *data = i2c_get_clientdata(client);
588 mutex_lock(&data->update_lock);
590 if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
592 u8 sfr = i2c_smbus_read_byte_data(client, SMSC47M192_REG_SFR);
594 dev_dbg(&client->dev, "Starting smsc47m192 update\n");
596 for (i = 0; i <= 7; i++) {
597 data->in[i] = i2c_smbus_read_byte_data(client,
598 SMSC47M192_REG_IN(i));
599 data->in_min[i] = i2c_smbus_read_byte_data(client,
600 SMSC47M192_REG_IN_MIN(i));
601 data->in_max[i] = i2c_smbus_read_byte_data(client,
602 SMSC47M192_REG_IN_MAX(i));
604 for (i = 0; i < 3; i++) {
605 data->temp[i] = i2c_smbus_read_byte_data(client,
606 SMSC47M192_REG_TEMP[i]);
607 data->temp_max[i] = i2c_smbus_read_byte_data(client,
608 SMSC47M192_REG_TEMP_MAX[i]);
609 data->temp_min[i] = i2c_smbus_read_byte_data(client,
610 SMSC47M192_REG_TEMP_MIN[i]);
612 for (i = 1; i < 3; i++)
613 data->temp_offset[i] = i2c_smbus_read_byte_data(client,
614 SMSC47M192_REG_TEMP_OFFSET(i));
615 /* first offset is temp_offset[0] if SFR bit 4 is set,
616 temp_offset[1] otherwise */
618 data->temp_offset[0] = data->temp_offset[1];
619 data->temp_offset[1] = 0;
621 data->temp_offset[0] = 0;
623 data->vid = i2c_smbus_read_byte_data(client, SMSC47M192_REG_VID)
625 config = i2c_smbus_read_byte_data(client,
626 SMSC47M192_REG_CONFIG);
628 data->vid |= (i2c_smbus_read_byte_data(client,
629 SMSC47M192_REG_VID4) & 0x01) << 4;
630 data->alarms = i2c_smbus_read_byte_data(client,
631 SMSC47M192_REG_ALARM1) |
632 (i2c_smbus_read_byte_data(client,
633 SMSC47M192_REG_ALARM2) << 8);
635 data->last_updated = jiffies;
639 mutex_unlock(&data->update_lock);
644 static int __init smsc47m192_init(void)
646 return i2c_add_driver(&smsc47m192_driver);
649 static void __exit smsc47m192_exit(void)
651 i2c_del_driver(&smsc47m192_driver);
654 MODULE_AUTHOR("Hartmut Rick <linux@rick.claranet.de>");
655 MODULE_DESCRIPTION("SMSC47M192 driver");
656 MODULE_LICENSE("GPL");
658 module_init(smsc47m192_init);
659 module_exit(smsc47m192_exit);