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44#include <linux/init.h>
45#include <linux/module.h>
46#include <linux/slab.h>
47#include <linux/i2c.h>
48#include <linux/hwmon-sysfs.h>
49#include <linux/hwmon.h>
50#include <linux/hwmon-vid.h>
51#include <linux/err.h>
52#include <linux/mutex.h>
53
54
55static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f,
56 I2C_CLIENT_END };
57
58
59I2C_CLIENT_INSMOD_3(adm9240, ds1780, lm81);
60
61
62#define ADM9240_REG_MAN_ID 0x3e
63#define ADM9240_REG_DIE_REV 0x3f
64#define ADM9240_REG_CONFIG 0x40
65
66#define ADM9240_REG_IN(nr) (0x20 + (nr))
67#define ADM9240_REG_IN_MAX(nr) (0x2b + (nr) * 2)
68#define ADM9240_REG_IN_MIN(nr) (0x2c + (nr) * 2)
69#define ADM9240_REG_FAN(nr) (0x28 + (nr))
70#define ADM9240_REG_FAN_MIN(nr) (0x3b + (nr))
71#define ADM9240_REG_INT(nr) (0x41 + (nr))
72#define ADM9240_REG_INT_MASK(nr) (0x43 + (nr))
73#define ADM9240_REG_TEMP 0x27
74#define ADM9240_REG_TEMP_MAX(nr) (0x39 + (nr))
75#define ADM9240_REG_ANALOG_OUT 0x19
76#define ADM9240_REG_CHASSIS_CLEAR 0x46
77#define ADM9240_REG_VID_FAN_DIV 0x47
78#define ADM9240_REG_I2C_ADDR 0x48
79#define ADM9240_REG_VID4 0x49
80#define ADM9240_REG_TEMP_CONF 0x4b
81
82
83static inline int SCALE(long val, int mul, int div)
84{
85 if (val < 0)
86 return (val * mul - div / 2) / div;
87 else
88 return (val * mul + div / 2) / div;
89}
90
91
92static const u16 nom_mv[] = { 2500, 2700, 3300, 5000, 12000, 2700 };
93
94static inline unsigned int IN_FROM_REG(u8 reg, int n)
95{
96 return SCALE(reg, nom_mv[n], 192);
97}
98
99static inline u8 IN_TO_REG(unsigned long val, int n)
100{
101 return SENSORS_LIMIT(SCALE(val, 192, nom_mv[n]), 0, 255);
102}
103
104
105static inline s8 TEMP_TO_REG(long val)
106{
107 return SENSORS_LIMIT(SCALE(val, 1, 1000), -40, 127);
108}
109
110
111static inline unsigned int FAN_FROM_REG(u8 reg, u8 div)
112{
113 if (!reg)
114 return -1;
115
116 if (reg == 255)
117 return 0;
118
119 return SCALE(1350000, 1, reg * div);
120}
121
122
123static inline u8 AOUT_TO_REG(unsigned long val)
124{
125 return SENSORS_LIMIT(SCALE(val, 255, 1250), 0, 255);
126}
127
128static inline unsigned int AOUT_FROM_REG(u8 reg)
129{
130 return SCALE(reg, 1250, 255);
131}
132
133static int adm9240_probe(struct i2c_client *client,
134 const struct i2c_device_id *id);
135static int adm9240_detect(struct i2c_client *client, int kind,
136 struct i2c_board_info *info);
137static void adm9240_init_client(struct i2c_client *client);
138static int adm9240_remove(struct i2c_client *client);
139static struct adm9240_data *adm9240_update_device(struct device *dev);
140
141
142static const struct i2c_device_id adm9240_id[] = {
143 { "adm9240", adm9240 },
144 { "ds1780", ds1780 },
145 { "lm81", lm81 },
146 { }
147};
148MODULE_DEVICE_TABLE(i2c, adm9240_id);
149
150static struct i2c_driver adm9240_driver = {
151 .class = I2C_CLASS_HWMON,
152 .driver = {
153 .name = "adm9240",
154 },
155 .probe = adm9240_probe,
156 .remove = adm9240_remove,
157 .id_table = adm9240_id,
158 .detect = adm9240_detect,
159 .address_data = &addr_data,
160};
161
162
163struct adm9240_data {
164 struct device *hwmon_dev;
165 struct mutex update_lock;
166 char valid;
167 unsigned long last_updated_measure;
168 unsigned long last_updated_config;
169
170 u8 in[6];
171 u8 in_max[6];
172 u8 in_min[6];
173 u8 fan[2];
174 u8 fan_min[2];
175 u8 fan_div[2];
176 s16 temp;
177 s8 temp_max[2];
178 u16 alarms;
179 u8 aout;
180 u8 vid;
181 u8 vrm;
182};
183
184
185
186
187static ssize_t show_temp(struct device *dev, struct device_attribute *dummy,
188 char *buf)
189{
190 struct adm9240_data *data = adm9240_update_device(dev);
191 return sprintf(buf, "%d\n", data->temp * 500);
192}
193
194static ssize_t show_max(struct device *dev, struct device_attribute *devattr,
195 char *buf)
196{
197 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
198 struct adm9240_data *data = adm9240_update_device(dev);
199 return sprintf(buf, "%d\n", data->temp_max[attr->index] * 1000);
200}
201
202static ssize_t set_max(struct device *dev, struct device_attribute *devattr,
203 const char *buf, size_t count)
204{
205 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
206 struct i2c_client *client = to_i2c_client(dev);
207 struct adm9240_data *data = i2c_get_clientdata(client);
208 long val = simple_strtol(buf, NULL, 10);
209
210 mutex_lock(&data->update_lock);
211 data->temp_max[attr->index] = TEMP_TO_REG(val);
212 i2c_smbus_write_byte_data(client, ADM9240_REG_TEMP_MAX(attr->index),
213 data->temp_max[attr->index]);
214 mutex_unlock(&data->update_lock);
215 return count;
216}
217
218static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL);
219static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO,
220 show_max, set_max, 0);
221static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IWUSR | S_IRUGO,
222 show_max, set_max, 1);
223
224
225static ssize_t show_in(struct device *dev, struct device_attribute *devattr,
226 char *buf)
227{
228 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
229 struct adm9240_data *data = adm9240_update_device(dev);
230 return sprintf(buf, "%d\n", IN_FROM_REG(data->in[attr->index],
231 attr->index));
232}
233
234static ssize_t show_in_min(struct device *dev,
235 struct device_attribute *devattr, char *buf)
236{
237 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
238 struct adm9240_data *data = adm9240_update_device(dev);
239 return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[attr->index],
240 attr->index));
241}
242
243static ssize_t show_in_max(struct device *dev,
244 struct device_attribute *devattr, char *buf)
245{
246 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
247 struct adm9240_data *data = adm9240_update_device(dev);
248 return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[attr->index],
249 attr->index));
250}
251
252static ssize_t set_in_min(struct device *dev,
253 struct device_attribute *devattr,
254 const char *buf, size_t count)
255{
256 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
257 struct i2c_client *client = to_i2c_client(dev);
258 struct adm9240_data *data = i2c_get_clientdata(client);
259 unsigned long val = simple_strtoul(buf, NULL, 10);
260
261 mutex_lock(&data->update_lock);
262 data->in_min[attr->index] = IN_TO_REG(val, attr->index);
263 i2c_smbus_write_byte_data(client, ADM9240_REG_IN_MIN(attr->index),
264 data->in_min[attr->index]);
265 mutex_unlock(&data->update_lock);
266 return count;
267}
268
269static ssize_t set_in_max(struct device *dev,
270 struct device_attribute *devattr,
271 const char *buf, size_t count)
272{
273 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
274 struct i2c_client *client = to_i2c_client(dev);
275 struct adm9240_data *data = i2c_get_clientdata(client);
276 unsigned long val = simple_strtoul(buf, NULL, 10);
277
278 mutex_lock(&data->update_lock);
279 data->in_max[attr->index] = IN_TO_REG(val, attr->index);
280 i2c_smbus_write_byte_data(client, ADM9240_REG_IN_MAX(attr->index),
281 data->in_max[attr->index]);
282 mutex_unlock(&data->update_lock);
283 return count;
284}
285
286#define vin(nr) \
287static SENSOR_DEVICE_ATTR(in##nr##_input, S_IRUGO, \
288 show_in, NULL, nr); \
289static SENSOR_DEVICE_ATTR(in##nr##_min, S_IRUGO | S_IWUSR, \
290 show_in_min, set_in_min, nr); \
291static SENSOR_DEVICE_ATTR(in##nr##_max, S_IRUGO | S_IWUSR, \
292 show_in_max, set_in_max, nr);
293
294vin(0);
295vin(1);
296vin(2);
297vin(3);
298vin(4);
299vin(5);
300
301
302static ssize_t show_fan(struct device *dev,
303 struct device_attribute *devattr, char *buf)
304{
305 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
306 struct adm9240_data *data = adm9240_update_device(dev);
307 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[attr->index],
308 1 << data->fan_div[attr->index]));
309}
310
311static ssize_t show_fan_min(struct device *dev,
312 struct device_attribute *devattr, char *buf)
313{
314 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
315 struct adm9240_data *data = adm9240_update_device(dev);
316 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[attr->index],
317 1 << data->fan_div[attr->index]));
318}
319
320static ssize_t show_fan_div(struct device *dev,
321 struct device_attribute *devattr, char *buf)
322{
323 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
324 struct adm9240_data *data = adm9240_update_device(dev);
325 return sprintf(buf, "%d\n", 1 << data->fan_div[attr->index]);
326}
327
328
329static void adm9240_write_fan_div(struct i2c_client *client, int nr,
330 u8 fan_div)
331{
332 u8 reg, old, shift = (nr + 2) * 2;
333
334 reg = i2c_smbus_read_byte_data(client, ADM9240_REG_VID_FAN_DIV);
335 old = (reg >> shift) & 3;
336 reg &= ~(3 << shift);
337 reg |= (fan_div << shift);
338 i2c_smbus_write_byte_data(client, ADM9240_REG_VID_FAN_DIV, reg);
339 dev_dbg(&client->dev, "fan%d clock divider changed from %u "
340 "to %u\n", nr + 1, 1 << old, 1 << fan_div);
341}
342
343
344
345
346
347
348
349
350
351
352
353
354static ssize_t set_fan_min(struct device *dev,
355 struct device_attribute *devattr,
356 const char *buf, size_t count)
357{
358 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
359 struct i2c_client *client = to_i2c_client(dev);
360 struct adm9240_data *data = i2c_get_clientdata(client);
361 unsigned long val = simple_strtoul(buf, NULL, 10);
362 int nr = attr->index;
363 u8 new_div;
364
365 mutex_lock(&data->update_lock);
366
367 if (!val) {
368 data->fan_min[nr] = 255;
369 new_div = data->fan_div[nr];
370
371 dev_dbg(&client->dev, "fan%u low limit set disabled\n",
372 nr + 1);
373
374 } else if (val < 1350000 / (8 * 254)) {
375 new_div = 3;
376 data->fan_min[nr] = 254;
377
378 dev_dbg(&client->dev, "fan%u low limit set minimum %u\n",
379 nr + 1, FAN_FROM_REG(254, 1 << new_div));
380
381 } else {
382 unsigned int new_min = 1350000 / val;
383
384 new_div = 0;
385 while (new_min > 192 && new_div < 3) {
386 new_div++;
387 new_min /= 2;
388 }
389 if (!new_min)
390 new_min++;
391
392 data->fan_min[nr] = new_min;
393
394 dev_dbg(&client->dev, "fan%u low limit set fan speed %u\n",
395 nr + 1, FAN_FROM_REG(new_min, 1 << new_div));
396 }
397
398 if (new_div != data->fan_div[nr]) {
399 data->fan_div[nr] = new_div;
400 adm9240_write_fan_div(client, nr, new_div);
401 }
402 i2c_smbus_write_byte_data(client, ADM9240_REG_FAN_MIN(nr),
403 data->fan_min[nr]);
404
405 mutex_unlock(&data->update_lock);
406 return count;
407}
408
409#define fan(nr) \
410static SENSOR_DEVICE_ATTR(fan##nr##_input, S_IRUGO, \
411 show_fan, NULL, nr - 1); \
412static SENSOR_DEVICE_ATTR(fan##nr##_div, S_IRUGO, \
413 show_fan_div, NULL, nr - 1); \
414static SENSOR_DEVICE_ATTR(fan##nr##_min, S_IRUGO | S_IWUSR, \
415 show_fan_min, set_fan_min, nr - 1);
416
417fan(1);
418fan(2);
419
420
421static ssize_t show_alarms(struct device *dev,
422 struct device_attribute *attr, char *buf)
423{
424 struct adm9240_data *data = adm9240_update_device(dev);
425 return sprintf(buf, "%u\n", data->alarms);
426}
427static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
428
429static ssize_t show_alarm(struct device *dev,
430 struct device_attribute *attr, char *buf)
431{
432 int bitnr = to_sensor_dev_attr(attr)->index;
433 struct adm9240_data *data = adm9240_update_device(dev);
434 return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
435}
436static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0);
437static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1);
438static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2);
439static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3);
440static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8);
441static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 9);
442static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4);
443static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6);
444static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7);
445
446
447static ssize_t show_vid(struct device *dev,
448 struct device_attribute *attr, char *buf)
449{
450 struct adm9240_data *data = adm9240_update_device(dev);
451 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
452}
453static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL);
454
455
456static ssize_t show_aout(struct device *dev,
457 struct device_attribute *attr, char *buf)
458{
459 struct adm9240_data *data = adm9240_update_device(dev);
460 return sprintf(buf, "%d\n", AOUT_FROM_REG(data->aout));
461}
462
463static ssize_t set_aout(struct device *dev,
464 struct device_attribute *attr,
465 const char *buf, size_t count)
466{
467 struct i2c_client *client = to_i2c_client(dev);
468 struct adm9240_data *data = i2c_get_clientdata(client);
469 unsigned long val = simple_strtol(buf, NULL, 10);
470
471 mutex_lock(&data->update_lock);
472 data->aout = AOUT_TO_REG(val);
473 i2c_smbus_write_byte_data(client, ADM9240_REG_ANALOG_OUT, data->aout);
474 mutex_unlock(&data->update_lock);
475 return count;
476}
477static DEVICE_ATTR(aout_output, S_IRUGO | S_IWUSR, show_aout, set_aout);
478
479
480static ssize_t chassis_clear(struct device *dev,
481 struct device_attribute *attr,
482 const char *buf, size_t count)
483{
484 struct i2c_client *client = to_i2c_client(dev);
485 unsigned long val = simple_strtol(buf, NULL, 10);
486
487 if (val == 1) {
488 i2c_smbus_write_byte_data(client,
489 ADM9240_REG_CHASSIS_CLEAR, 0x80);
490 dev_dbg(&client->dev, "chassis intrusion latch cleared\n");
491 }
492 return count;
493}
494static DEVICE_ATTR(chassis_clear, S_IWUSR, NULL, chassis_clear);
495
496static struct attribute *adm9240_attributes[] = {
497 &sensor_dev_attr_in0_input.dev_attr.attr,
498 &sensor_dev_attr_in0_min.dev_attr.attr,
499 &sensor_dev_attr_in0_max.dev_attr.attr,
500 &sensor_dev_attr_in0_alarm.dev_attr.attr,
501 &sensor_dev_attr_in1_input.dev_attr.attr,
502 &sensor_dev_attr_in1_min.dev_attr.attr,
503 &sensor_dev_attr_in1_max.dev_attr.attr,
504 &sensor_dev_attr_in1_alarm.dev_attr.attr,
505 &sensor_dev_attr_in2_input.dev_attr.attr,
506 &sensor_dev_attr_in2_min.dev_attr.attr,
507 &sensor_dev_attr_in2_max.dev_attr.attr,
508 &sensor_dev_attr_in2_alarm.dev_attr.attr,
509 &sensor_dev_attr_in3_input.dev_attr.attr,
510 &sensor_dev_attr_in3_min.dev_attr.attr,
511 &sensor_dev_attr_in3_max.dev_attr.attr,
512 &sensor_dev_attr_in3_alarm.dev_attr.attr,
513 &sensor_dev_attr_in4_input.dev_attr.attr,
514 &sensor_dev_attr_in4_min.dev_attr.attr,
515 &sensor_dev_attr_in4_max.dev_attr.attr,
516 &sensor_dev_attr_in4_alarm.dev_attr.attr,
517 &sensor_dev_attr_in5_input.dev_attr.attr,
518 &sensor_dev_attr_in5_min.dev_attr.attr,
519 &sensor_dev_attr_in5_max.dev_attr.attr,
520 &sensor_dev_attr_in5_alarm.dev_attr.attr,
521 &dev_attr_temp1_input.attr,
522 &sensor_dev_attr_temp1_max.dev_attr.attr,
523 &sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
524 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
525 &sensor_dev_attr_fan1_input.dev_attr.attr,
526 &sensor_dev_attr_fan1_div.dev_attr.attr,
527 &sensor_dev_attr_fan1_min.dev_attr.attr,
528 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
529 &sensor_dev_attr_fan2_input.dev_attr.attr,
530 &sensor_dev_attr_fan2_div.dev_attr.attr,
531 &sensor_dev_attr_fan2_min.dev_attr.attr,
532 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
533 &dev_attr_alarms.attr,
534 &dev_attr_aout_output.attr,
535 &dev_attr_chassis_clear.attr,
536 &dev_attr_cpu0_vid.attr,
537 NULL
538};
539
540static const struct attribute_group adm9240_group = {
541 .attrs = adm9240_attributes,
542};
543
544
545
546
547
548static int adm9240_detect(struct i2c_client *new_client, int kind,
549 struct i2c_board_info *info)
550{
551 struct i2c_adapter *adapter = new_client->adapter;
552 const char *name = "";
553 int address = new_client->addr;
554 u8 man_id, die_rev;
555
556 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
557 return -ENODEV;
558
559 if (kind == 0) {
560 kind = adm9240;
561 }
562
563 if (kind < 0) {
564
565
566 if (i2c_smbus_read_byte_data(new_client, ADM9240_REG_I2C_ADDR)
567 != address) {
568 dev_err(&adapter->dev, "detect fail: address match, "
569 "0x%02x\n", address);
570 return -ENODEV;
571 }
572
573
574 man_id = i2c_smbus_read_byte_data(new_client,
575 ADM9240_REG_MAN_ID);
576 if (man_id == 0x23) {
577 kind = adm9240;
578 } else if (man_id == 0xda) {
579 kind = ds1780;
580 } else if (man_id == 0x01) {
581 kind = lm81;
582 } else {
583 dev_err(&adapter->dev, "detect fail: unknown manuf, "
584 "0x%02x\n", man_id);
585 return -ENODEV;
586 }
587
588
589 die_rev = i2c_smbus_read_byte_data(new_client,
590 ADM9240_REG_DIE_REV);
591 dev_info(&adapter->dev, "found %s revision %u\n",
592 man_id == 0x23 ? "ADM9240" :
593 man_id == 0xda ? "DS1780" : "LM81", die_rev);
594 }
595
596
597 if (kind == adm9240) {
598 name = "adm9240";
599 } else if (kind == ds1780) {
600 name = "ds1780";
601 } else if (kind == lm81) {
602 name = "lm81";
603 }
604 strlcpy(info->type, name, I2C_NAME_SIZE);
605
606 return 0;
607}
608
609static int adm9240_probe(struct i2c_client *new_client,
610 const struct i2c_device_id *id)
611{
612 struct adm9240_data *data;
613 int err;
614
615 data = kzalloc(sizeof(*data), GFP_KERNEL);
616 if (!data) {
617 err = -ENOMEM;
618 goto exit;
619 }
620
621 i2c_set_clientdata(new_client, data);
622 mutex_init(&data->update_lock);
623
624 adm9240_init_client(new_client);
625
626
627 if ((err = sysfs_create_group(&new_client->dev.kobj, &adm9240_group)))
628 goto exit_free;
629
630 data->hwmon_dev = hwmon_device_register(&new_client->dev);
631 if (IS_ERR(data->hwmon_dev)) {
632 err = PTR_ERR(data->hwmon_dev);
633 goto exit_remove;
634 }
635
636 return 0;
637
638exit_remove:
639 sysfs_remove_group(&new_client->dev.kobj, &adm9240_group);
640exit_free:
641 kfree(data);
642exit:
643 return err;
644}
645
646static int adm9240_remove(struct i2c_client *client)
647{
648 struct adm9240_data *data = i2c_get_clientdata(client);
649
650 hwmon_device_unregister(data->hwmon_dev);
651 sysfs_remove_group(&client->dev.kobj, &adm9240_group);
652
653 kfree(data);
654 return 0;
655}
656
657static void adm9240_init_client(struct i2c_client *client)
658{
659 struct adm9240_data *data = i2c_get_clientdata(client);
660 u8 conf = i2c_smbus_read_byte_data(client, ADM9240_REG_CONFIG);
661 u8 mode = i2c_smbus_read_byte_data(client, ADM9240_REG_TEMP_CONF) & 3;
662
663 data->vrm = vid_which_vrm();
664
665 dev_info(&client->dev, "Using VRM: %d.%d\n", data->vrm / 10,
666 data->vrm % 10);
667
668 if (conf & 1) {
669
670 dev_info(&client->dev, "status: config 0x%02x mode %u\n",
671 conf, mode);
672
673 } else {
674 int i;
675
676 for (i = 0; i < 6; i++)
677 {
678 i2c_smbus_write_byte_data(client,
679 ADM9240_REG_IN_MIN(i), 0);
680 i2c_smbus_write_byte_data(client,
681 ADM9240_REG_IN_MAX(i), 255);
682 }
683 i2c_smbus_write_byte_data(client,
684 ADM9240_REG_FAN_MIN(0), 255);
685 i2c_smbus_write_byte_data(client,
686 ADM9240_REG_FAN_MIN(1), 255);
687 i2c_smbus_write_byte_data(client,
688 ADM9240_REG_TEMP_MAX(0), 127);
689 i2c_smbus_write_byte_data(client,
690 ADM9240_REG_TEMP_MAX(1), 127);
691
692
693 i2c_smbus_write_byte_data(client, ADM9240_REG_CONFIG, 1);
694
695 dev_info(&client->dev, "cold start: config was 0x%02x "
696 "mode %u\n", conf, mode);
697 }
698}
699
700static struct adm9240_data *adm9240_update_device(struct device *dev)
701{
702 struct i2c_client *client = to_i2c_client(dev);
703 struct adm9240_data *data = i2c_get_clientdata(client);
704 int i;
705
706 mutex_lock(&data->update_lock);
707
708
709 if (time_after(jiffies, data->last_updated_measure + (HZ * 7 / 4))
710 || !data->valid) {
711
712 for (i = 0; i < 6; i++)
713 {
714 data->in[i] = i2c_smbus_read_byte_data(client,
715 ADM9240_REG_IN(i));
716 }
717 data->alarms = i2c_smbus_read_byte_data(client,
718 ADM9240_REG_INT(0)) |
719 i2c_smbus_read_byte_data(client,
720 ADM9240_REG_INT(1)) << 8;
721
722
723
724
725 data->temp = ((i2c_smbus_read_byte_data(client,
726 ADM9240_REG_TEMP) << 8) |
727 i2c_smbus_read_byte_data(client,
728 ADM9240_REG_TEMP_CONF)) / 128;
729
730 for (i = 0; i < 2; i++)
731 {
732 data->fan[i] = i2c_smbus_read_byte_data(client,
733 ADM9240_REG_FAN(i));
734
735
736 if (data->valid && data->fan[i] == 255 &&
737 data->fan_div[i] < 3) {
738
739 adm9240_write_fan_div(client, i,
740 ++data->fan_div[i]);
741
742
743 if (data->fan_min[i] < 255 &&
744 data->fan_min[i] >= 2)
745 data->fan_min[i] /= 2;
746 }
747 }
748 data->last_updated_measure = jiffies;
749 }
750
751
752 if (time_after(jiffies, data->last_updated_config + (HZ * 300))
753 || !data->valid) {
754
755 for (i = 0; i < 6; i++)
756 {
757 data->in_min[i] = i2c_smbus_read_byte_data(client,
758 ADM9240_REG_IN_MIN(i));
759 data->in_max[i] = i2c_smbus_read_byte_data(client,
760 ADM9240_REG_IN_MAX(i));
761 }
762 for (i = 0; i < 2; i++)
763 {
764 data->fan_min[i] = i2c_smbus_read_byte_data(client,
765 ADM9240_REG_FAN_MIN(i));
766 }
767 data->temp_max[0] = i2c_smbus_read_byte_data(client,
768 ADM9240_REG_TEMP_MAX(0));
769 data->temp_max[1] = i2c_smbus_read_byte_data(client,
770 ADM9240_REG_TEMP_MAX(1));
771
772
773 i = i2c_smbus_read_byte_data(client, ADM9240_REG_VID_FAN_DIV);
774 data->fan_div[0] = (i >> 4) & 3;
775 data->fan_div[1] = (i >> 6) & 3;
776 data->vid = i & 0x0f;
777 data->vid |= (i2c_smbus_read_byte_data(client,
778 ADM9240_REG_VID4) & 1) << 4;
779
780 data->aout = i2c_smbus_read_byte_data(client,
781 ADM9240_REG_ANALOG_OUT);
782
783 data->last_updated_config = jiffies;
784 data->valid = 1;
785 }
786 mutex_unlock(&data->update_lock);
787 return data;
788}
789
790static int __init sensors_adm9240_init(void)
791{
792 return i2c_add_driver(&adm9240_driver);
793}
794
795static void __exit sensors_adm9240_exit(void)
796{
797 i2c_del_driver(&adm9240_driver);
798}
799
800MODULE_AUTHOR("Michiel Rook <michiel@grendelproject.nl>, "
801 "Grant Coady <gcoady.lk@gmail.com> and others");
802MODULE_DESCRIPTION("ADM9240/DS1780/LM81 driver");
803MODULE_LICENSE("GPL");
804
805module_init(sensors_adm9240_init);
806module_exit(sensors_adm9240_exit);
807
808