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hwmon: (adt7475) Add missing static marker
[deliverable/linux.git] / drivers / hwmon / adt7475.c
CommitLineData
1c301fc5
JC		 1/*
2 * adt7475 - Thermal sensor driver for the ADT7475 chip and derivatives
3 * Copyright (C) 2007-2008, Advanced Micro Devices, Inc.
4 * Copyright (C) 2008 Jordan Crouse <jordan@cosmicpenguin.net>
5 * Copyright (C) 2008 Hans de Goede <hdegoede@redhat.com>
6
7 * Derived from the lm83 driver by Jean Delvare
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 */
13
14#include <linux/module.h>
15#include <linux/init.h>
16#include <linux/slab.h>
17#include <linux/i2c.h>
18#include <linux/hwmon.h>
19#include <linux/hwmon-sysfs.h>
20#include <linux/err.h>
21
22/* Indexes for the sysfs hooks */
23
24#define INPUT 0
25#define MIN 1
26#define MAX 2
27#define CONTROL 3
28#define OFFSET 3
29#define AUTOMIN 4
30#define THERM 5
31#define HYSTERSIS 6
32
33/* These are unique identifiers for the sysfs functions - unlike the
34 numbers above, these are not also indexes into an array
35*/
36
37#define ALARM 9
38#define FAULT 10
39
40/* 7475 Common Registers */
41
cffb9dd0 42#define REG_VOLTAGE_BASE 0x20
1c301fc5
JC		 43#define REG_TEMP_BASE 0x25
44#define REG_TACH_BASE 0x28
45#define REG_PWM_BASE 0x30
46#define REG_PWM_MAX_BASE 0x38
47
48#define REG_DEVID 0x3D
49#define REG_VENDID 0x3E
50
51#define REG_STATUS1 0x41
52#define REG_STATUS2 0x42
53
cffb9dd0
JD		 54#define REG_VOLTAGE_MIN_BASE 0x44
55#define REG_VOLTAGE_MAX_BASE 0x45
1c301fc5
JC		 56
57#define REG_TEMP_MIN_BASE 0x4E
58#define REG_TEMP_MAX_BASE 0x4F
59
60#define REG_TACH_MIN_BASE 0x54
61
62#define REG_PWM_CONFIG_BASE 0x5C
63
64#define REG_TEMP_TRANGE_BASE 0x5F
65
66#define REG_PWM_MIN_BASE 0x64
67
68#define REG_TEMP_TMIN_BASE 0x67
69#define REG_TEMP_THERM_BASE 0x6A
70
71#define REG_REMOTE1_HYSTERSIS 0x6D
72#define REG_REMOTE2_HYSTERSIS 0x6E
73
74#define REG_TEMP_OFFSET_BASE 0x70
75
76#define REG_EXTEND1 0x76
77#define REG_EXTEND2 0x77
78#define REG_CONFIG5 0x7C
f99318b2
JD		 79#define REG_CONFIG4 0x7D
80
81#define CONFIG4_MAXDUTY 0x08
1c301fc5
JC		 82
83#define CONFIG5_TWOSCOMP 0x01
84#define CONFIG5_TEMPOFFSET 0x02
85
86/* ADT7475 Settings */
87
cffb9dd0 88#define ADT7475_VOLTAGE_COUNT 5 /* Not counting Vtt */
1c301fc5
JC		 89#define ADT7475_TEMP_COUNT 3
90#define ADT7475_TACH_COUNT 4
91#define ADT7475_PWM_COUNT 3
92
93/* Macro to read the registers */
94
95#define adt7475_read(reg) i2c_smbus_read_byte_data(client, (reg))
96
97/* Macros to easily index the registers */
98
99#define TACH_REG(idx) (REG_TACH_BASE + ((idx) * 2))
100#define TACH_MIN_REG(idx) (REG_TACH_MIN_BASE + ((idx) * 2))
101
102#define PWM_REG(idx) (REG_PWM_BASE + (idx))
103#define PWM_MAX_REG(idx) (REG_PWM_MAX_BASE + (idx))
104#define PWM_MIN_REG(idx) (REG_PWM_MIN_BASE + (idx))
105#define PWM_CONFIG_REG(idx) (REG_PWM_CONFIG_BASE + (idx))
106
107#define VOLTAGE_REG(idx) (REG_VOLTAGE_BASE + (idx))
108#define VOLTAGE_MIN_REG(idx) (REG_VOLTAGE_MIN_BASE + ((idx) * 2))
109#define VOLTAGE_MAX_REG(idx) (REG_VOLTAGE_MAX_BASE + ((idx) * 2))
110
111#define TEMP_REG(idx) (REG_TEMP_BASE + (idx))
112#define TEMP_MIN_REG(idx) (REG_TEMP_MIN_BASE + ((idx) * 2))
113#define TEMP_MAX_REG(idx) (REG_TEMP_MAX_BASE + ((idx) * 2))
114#define TEMP_TMIN_REG(idx) (REG_TEMP_TMIN_BASE + (idx))
115#define TEMP_THERM_REG(idx) (REG_TEMP_THERM_BASE + (idx))
116#define TEMP_OFFSET_REG(idx) (REG_TEMP_OFFSET_BASE + (idx))
117#define TEMP_TRANGE_REG(idx) (REG_TEMP_TRANGE_BASE + (idx))
118
b180d050 119static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
1c301fc5 120
b180d050 121I2C_CLIENT_INSMOD_2(adt7473, adt7475);
1c301fc5
JC		 122
123static const struct i2c_device_id adt7475_id[] = {
b180d050 124 { "adt7473", adt7473 },
1c301fc5
JC		 125 { "adt7475", adt7475 },
126 { }
127};
128MODULE_DEVICE_TABLE(i2c, adt7475_id);
129
130struct adt7475_data {
131 struct device *hwmon_dev;
132 struct mutex lock;
133
134 unsigned long measure_updated;
135 unsigned long limits_updated;
136 char valid;
137
f99318b2 138 u8 config4;
1c301fc5 139 u8 config5;
cffb9dd0 140 u8 has_voltage;
1c301fc5 141 u16 alarms;
cffb9dd0 142 u16 voltage[3][6];
1c301fc5
JC		 143 u16 temp[7][3];
144 u16 tach[2][4];
145 u8 pwm[4][3];
146 u8 range[3];
147 u8 pwmctl[3];
148 u8 pwmchan[3];
149};
150
151static struct i2c_driver adt7475_driver;
152static struct adt7475_data *adt7475_update_device(struct device *dev);
153static void adt7475_read_hystersis(struct i2c_client *client);
154static void adt7475_read_pwm(struct i2c_client *client, int index);
155
156/* Given a temp value, convert it to register value */
157
158static inline u16 temp2reg(struct adt7475_data *data, long val)
159{
160 u16 ret;
161
162 if (!(data->config5 & CONFIG5_TWOSCOMP)) {
163 val = SENSORS_LIMIT(val, -64000, 191000);
164 ret = (val + 64500) / 1000;
165 } else {
166 val = SENSORS_LIMIT(val, -128000, 127000);
167 if (val < -500)
168 ret = (256500 + val) / 1000;
169 else
170 ret = (val + 500) / 1000;
171 }
172
173 return ret << 2;
174}
175
176/* Given a register value, convert it to a real temp value */
177
178static inline int reg2temp(struct adt7475_data *data, u16 reg)
179{
180 if (data->config5 & CONFIG5_TWOSCOMP) {
181 if (reg >= 512)
182 return (reg - 1024) * 250;
183 else
184 return reg * 250;
185 } else
186 return (reg - 256) * 250;
187}
188
189static inline int tach2rpm(u16 tach)
190{
191 if (tach == 0 || tach == 0xFFFF)
192 return 0;
193
194 return (90000 * 60) / tach;
195}
196
197static inline u16 rpm2tach(unsigned long rpm)
198{
199 if (rpm == 0)
200 return 0;
201
202 return SENSORS_LIMIT((90000 * 60) / rpm, 1, 0xFFFF);
203}
204
cffb9dd0
JD		 205/* Scaling factors for voltage inputs, taken from the ADT7490 datasheet */
206static const int adt7473_in_scaling[ADT7475_VOLTAGE_COUNT + 1][2] = {
207 { 45, 94 }, /* +2.5V */
208 { 175, 525 }, /* Vccp */
209 { 68, 71 }, /* Vcc */
210 { 93, 47 }, /* +5V */
211 { 120, 20 }, /* +12V */
212 { 45, 45 }, /* Vtt */
213};
1c301fc5 214
cffb9dd0 215static inline int reg2volt(int channel, u16 reg)
1c301fc5 216{
cffb9dd0 217 const int *r = adt7473_in_scaling[channel];
1c301fc5 218
cffb9dd0 219 return DIV_ROUND_CLOSEST(reg * (r[0] + r[1]) * 2250, r[1] * 1024);
1c301fc5
JC		 220}
221
cffb9dd0 222static inline u16 volt2reg(int channel, long volt)
1c301fc5 223{
cffb9dd0
JD		 224 const int *r = adt7473_in_scaling[channel];
225 long reg;
226
227 reg = (volt * r[1] * 1024) / ((r[0] + r[1]) * 2250);
228 return SENSORS_LIMIT(reg, 0, 1023) & (0xff << 2);
1c301fc5
JC		 229}
230
231static u16 adt7475_read_word(struct i2c_client *client, int reg)
232{
233 u16 val;
234
235 val = i2c_smbus_read_byte_data(client, reg);
236 val |= (i2c_smbus_read_byte_data(client, reg + 1) << 8);
237
238 return val;
239}
240
241static void adt7475_write_word(struct i2c_client *client, int reg, u16 val)
242{
243 i2c_smbus_write_byte_data(client, reg + 1, val >> 8);
244 i2c_smbus_write_byte_data(client, reg, val & 0xFF);
245}
246
247/* Find the nearest value in a table - used for pwm frequency and
248 auto temp range */
249static int find_nearest(long val, const int *array, int size)
250{
251 int i;
252
253 if (val < array[0])
254 return 0;
255
256 if (val > array[size - 1])
257 return size - 1;
258
259 for (i = 0; i < size - 1; i++) {
260 int a, b;
261
262 if (val > array[i + 1])
263 continue;
264
265 a = val - array[i];
266 b = array[i + 1] - val;
267
268 return (a <= b) ? i : i + 1;
269 }
270
271 return 0;
272}
273
274static ssize_t show_voltage(struct device *dev, struct device_attribute *attr,
275 char *buf)
276{
277 struct adt7475_data *data = adt7475_update_device(dev);
278 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
279 unsigned short val;
280
281 switch (sattr->nr) {
282 case ALARM:
283 return sprintf(buf, "%d\n",
cffb9dd0 284 (data->alarms >> sattr->index) & 1);
1c301fc5
JC		 285 default:
286 val = data->voltage[sattr->nr][sattr->index];
cffb9dd0 287 return sprintf(buf, "%d\n", reg2volt(sattr->index, val));
1c301fc5
JC		 288 }
289}
290
291static ssize_t set_voltage(struct device *dev, struct device_attribute *attr,
292 const char *buf, size_t count)
293{
294
295 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
296 struct i2c_client *client = to_i2c_client(dev);
297 struct adt7475_data *data = i2c_get_clientdata(client);
298 unsigned char reg;
299 long val;
300
301 if (strict_strtol(buf, 10, &val))
302 return -EINVAL;
303
304 mutex_lock(&data->lock);
305
cffb9dd0 306 data->voltage[sattr->nr][sattr->index] = volt2reg(sattr->index, val);
1c301fc5
JC		 307
308 if (sattr->nr == MIN)
309 reg = VOLTAGE_MIN_REG(sattr->index);
310 else
311 reg = VOLTAGE_MAX_REG(sattr->index);
312
313 i2c_smbus_write_byte_data(client, reg,
314 data->voltage[sattr->nr][sattr->index] >> 2);
315 mutex_unlock(&data->lock);
316
317 return count;
318}
319
320static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
321 char *buf)
322{
323 struct adt7475_data *data = adt7475_update_device(dev);
324 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
325 int out;
326
327 switch (sattr->nr) {
328 case HYSTERSIS:
329 mutex_lock(&data->lock);
330 out = data->temp[sattr->nr][sattr->index];
331 if (sattr->index != 1)
332 out = (out >> 4) & 0xF;
333 else
334 out = (out & 0xF);
335 /* Show the value as an absolute number tied to
336 * THERM */
337 out = reg2temp(data, data->temp[THERM][sattr->index]) -
338 out * 1000;
339 mutex_unlock(&data->lock);
340 break;
341
342 case OFFSET:
343 /* Offset is always 2's complement, regardless of the
344 * setting in CONFIG5 */
345 mutex_lock(&data->lock);
346 out = (s8)data->temp[sattr->nr][sattr->index];
347 if (data->config5 & CONFIG5_TEMPOFFSET)
348 out *= 1000;
349 else
350 out *= 500;
351 mutex_unlock(&data->lock);
352 break;
353
354 case ALARM:
355 out = (data->alarms >> (sattr->index + 4)) & 1;
356 break;
357
358 case FAULT:
359 /* Note - only for remote1 and remote2 */
cf312e07 360 out = !!(data->alarms & (sattr->index ? 0x8000 : 0x4000));
1c301fc5
JC		 361 break;
362
363 default:
364 /* All other temp values are in the configured format */
365 out = reg2temp(data, data->temp[sattr->nr][sattr->index]);
366 }
367
368 return sprintf(buf, "%d\n", out);
369}
370
371static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
372 const char *buf, size_t count)
373{
374 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
375 struct i2c_client *client = to_i2c_client(dev);
376 struct adt7475_data *data = i2c_get_clientdata(client);
377 unsigned char reg = 0;
378 u8 out;
379 int temp;
380 long val;
381
382 if (strict_strtol(buf, 10, &val))
383 return -EINVAL;
384
385 mutex_lock(&data->lock);
386
387 /* We need the config register in all cases for temp <-> reg conv. */
388 data->config5 = adt7475_read(REG_CONFIG5);
389
390 switch (sattr->nr) {
391 case OFFSET:
392 if (data->config5 & CONFIG5_TEMPOFFSET) {
393 val = SENSORS_LIMIT(val, -63000, 127000);
394 out = data->temp[OFFSET][sattr->index] = val / 1000;
395 } else {
396 val = SENSORS_LIMIT(val, -63000, 64000);
397 out = data->temp[OFFSET][sattr->index] = val / 500;
398 }
399 break;
400
401 case HYSTERSIS:
402 /* The value will be given as an absolute value, turn it
403 into an offset based on THERM */
404
405 /* Read fresh THERM and HYSTERSIS values from the chip */
406 data->temp[THERM][sattr->index] =
407 adt7475_read(TEMP_THERM_REG(sattr->index)) << 2;
408 adt7475_read_hystersis(client);
409
410 temp = reg2temp(data, data->temp[THERM][sattr->index]);
411 val = SENSORS_LIMIT(val, temp - 15000, temp);
412 val = (temp - val) / 1000;
413
414 if (sattr->index != 1) {
415 data->temp[HYSTERSIS][sattr->index] &= 0xF0;
416 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF) << 4;
417 } else {
418 data->temp[HYSTERSIS][sattr->index] &= 0x0F;
419 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF);
420 }
421
422 out = data->temp[HYSTERSIS][sattr->index];
423 break;
424
425 default:
426 data->temp[sattr->nr][sattr->index] = temp2reg(data, val);
427
428 /* We maintain an extra 2 digits of precision for simplicity
429 * - shift those back off before writing the value */
430 out = (u8) (data->temp[sattr->nr][sattr->index] >> 2);
431 }
432
433 switch (sattr->nr) {
434 case MIN:
435 reg = TEMP_MIN_REG(sattr->index);
436 break;
437 case MAX:
438 reg = TEMP_MAX_REG(sattr->index);
439 break;
440 case OFFSET:
441 reg = TEMP_OFFSET_REG(sattr->index);
442 break;
443 case AUTOMIN:
444 reg = TEMP_TMIN_REG(sattr->index);
445 break;
446 case THERM:
447 reg = TEMP_THERM_REG(sattr->index);
448 break;
449 case HYSTERSIS:
450 if (sattr->index != 2)
451 reg = REG_REMOTE1_HYSTERSIS;
452 else
453 reg = REG_REMOTE2_HYSTERSIS;
454
455 break;
456 }
457
458 i2c_smbus_write_byte_data(client, reg, out);
459
460 mutex_unlock(&data->lock);
461 return count;
462}
463
464/* Table of autorange values - the user will write the value in millidegrees,
465 and we'll convert it */
466static const int autorange_table[] = {
467 2000, 2500, 3330, 4000, 5000, 6670, 8000,
468 10000, 13330, 16000, 20000, 26670, 32000, 40000,
469 53330, 80000
470};
471
472static ssize_t show_point2(struct device *dev, struct device_attribute *attr,
473 char *buf)
474{
475 struct adt7475_data *data = adt7475_update_device(dev);
476 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
477 int out, val;
478
479 mutex_lock(&data->lock);
480 out = (data->range[sattr->index] >> 4) & 0x0F;
481 val = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
482 mutex_unlock(&data->lock);
483
484 return sprintf(buf, "%d\n", val + autorange_table[out]);
485}
486
487static ssize_t set_point2(struct device *dev, struct device_attribute *attr,
488 const char *buf, size_t count)
489{
490 struct i2c_client *client = to_i2c_client(dev);
491 struct adt7475_data *data = i2c_get_clientdata(client);
492 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
493 int temp;
494 long val;
495
496 if (strict_strtol(buf, 10, &val))
497 return -EINVAL;
498
499 mutex_lock(&data->lock);
500
501 /* Get a fresh copy of the needed registers */
502 data->config5 = adt7475_read(REG_CONFIG5);
503 data->temp[AUTOMIN][sattr->index] =
504 adt7475_read(TEMP_TMIN_REG(sattr->index)) << 2;
505 data->range[sattr->index] =
506 adt7475_read(TEMP_TRANGE_REG(sattr->index));
507
508 /* The user will write an absolute value, so subtract the start point
509 to figure the range */
510 temp = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
511 val = SENSORS_LIMIT(val, temp + autorange_table[0],
512 temp + autorange_table[ARRAY_SIZE(autorange_table) - 1]);
513 val -= temp;
514
515 /* Find the nearest table entry to what the user wrote */
516 val = find_nearest(val, autorange_table, ARRAY_SIZE(autorange_table));
517
518 data->range[sattr->index] &= ~0xF0;
519 data->range[sattr->index] |= val << 4;
520
521 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
522 data->range[sattr->index]);
523
524 mutex_unlock(&data->lock);
525 return count;
526}
527
528static ssize_t show_tach(struct device *dev, struct device_attribute *attr,
529 char *buf)
530{
531 struct adt7475_data *data = adt7475_update_device(dev);
532 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
533 int out;
534
535 if (sattr->nr == ALARM)
536 out = (data->alarms >> (sattr->index + 10)) & 1;
537 else
538 out = tach2rpm(data->tach[sattr->nr][sattr->index]);
539
540 return sprintf(buf, "%d\n", out);
541}
542
543static ssize_t set_tach(struct device *dev, struct device_attribute *attr,
544 const char *buf, size_t count)
545{
546
547 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
548 struct i2c_client *client = to_i2c_client(dev);
549 struct adt7475_data *data = i2c_get_clientdata(client);
550 unsigned long val;
551
552 if (strict_strtoul(buf, 10, &val))
553 return -EINVAL;
554
555 mutex_lock(&data->lock);
556
557 data->tach[MIN][sattr->index] = rpm2tach(val);
558
559 adt7475_write_word(client, TACH_MIN_REG(sattr->index),
560 data->tach[MIN][sattr->index]);
561
562 mutex_unlock(&data->lock);
563 return count;
564}
565
566static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
567 char *buf)
568{
569 struct adt7475_data *data = adt7475_update_device(dev);
570 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
571
572 return sprintf(buf, "%d\n", data->pwm[sattr->nr][sattr->index]);
573}
574
575static ssize_t show_pwmchan(struct device *dev, struct device_attribute *attr,
576 char *buf)
577{
578 struct adt7475_data *data = adt7475_update_device(dev);
579 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
580
581 return sprintf(buf, "%d\n", data->pwmchan[sattr->index]);
582}
583
584static ssize_t show_pwmctrl(struct device *dev, struct device_attribute *attr,
585 char *buf)
586{
587 struct adt7475_data *data = adt7475_update_device(dev);
588 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
589
590 return sprintf(buf, "%d\n", data->pwmctl[sattr->index]);
591}
592
593static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
594 const char *buf, size_t count)
595{
596
597 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
598 struct i2c_client *client = to_i2c_client(dev);
599 struct adt7475_data *data = i2c_get_clientdata(client);
600 unsigned char reg = 0;
601 long val;
602
603 if (strict_strtol(buf, 10, &val))
604 return -EINVAL;
605
606 mutex_lock(&data->lock);
607
608 switch (sattr->nr) {
609 case INPUT:
610 /* Get a fresh value for CONTROL */
611 data->pwm[CONTROL][sattr->index] =
612 adt7475_read(PWM_CONFIG_REG(sattr->index));
613
614 /* If we are not in manual mode, then we shouldn't allow
615 * the user to set the pwm speed */
616 if (((data->pwm[CONTROL][sattr->index] >> 5) & 7) != 7) {
617 mutex_unlock(&data->lock);
618 return count;
619 }
620
621 reg = PWM_REG(sattr->index);
622 break;
623
624 case MIN:
625 reg = PWM_MIN_REG(sattr->index);
626 break;
627
628 case MAX:
629 reg = PWM_MAX_REG(sattr->index);
630 break;
631 }
632
633 data->pwm[sattr->nr][sattr->index] = SENSORS_LIMIT(val, 0, 0xFF);
634 i2c_smbus_write_byte_data(client, reg,
635 data->pwm[sattr->nr][sattr->index]);
636
637 mutex_unlock(&data->lock);
638
639 return count;
640}
641
642/* Called by set_pwmctrl and set_pwmchan */
643
644static int hw_set_pwm(struct i2c_client *client, int index,
645 unsigned int pwmctl, unsigned int pwmchan)
646{
647 struct adt7475_data *data = i2c_get_clientdata(client);
648 long val = 0;
649
650 switch (pwmctl) {
651 case 0:
652 val = 0x03; /* Run at full speed */
653 break;
654 case 1:
655 val = 0x07; /* Manual mode */
656 break;
657 case 2:
658 switch (pwmchan) {
659 case 1:
660 /* Remote1 controls PWM */
661 val = 0x00;
662 break;
663 case 2:
664 /* local controls PWM */
665 val = 0x01;
666 break;
667 case 4:
668 /* remote2 controls PWM */
669 val = 0x02;
670 break;
671 case 6:
672 /* local/remote2 control PWM */
673 val = 0x05;
674 break;
675 case 7:
676 /* All three control PWM */
677 val = 0x06;
678 break;
679 default:
680 return -EINVAL;
681 }
682 break;
683 default:
684 return -EINVAL;
685 }
686
687 data->pwmctl[index] = pwmctl;
688 data->pwmchan[index] = pwmchan;
689
690 data->pwm[CONTROL][index] &= ~0xE0;
691 data->pwm[CONTROL][index] |= (val & 7) << 5;
692
693 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
694 data->pwm[CONTROL][index]);
695
696 return 0;
697}
698
699static ssize_t set_pwmchan(struct device *dev, struct device_attribute *attr,
700 const char *buf, size_t count)
701{
702 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
703 struct i2c_client *client = to_i2c_client(dev);
704 struct adt7475_data *data = i2c_get_clientdata(client);
705 int r;
706 long val;
707
708 if (strict_strtol(buf, 10, &val))
709 return -EINVAL;
710
711 mutex_lock(&data->lock);
712 /* Read Modify Write PWM values */
713 adt7475_read_pwm(client, sattr->index);
714 r = hw_set_pwm(client, sattr->index, data->pwmctl[sattr->index], val);
715 if (r)
716 count = r;
717 mutex_unlock(&data->lock);
718
719 return count;
720}
721
722static ssize_t set_pwmctrl(struct device *dev, struct device_attribute *attr,
723 const char *buf, size_t count)
724{
725 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
726 struct i2c_client *client = to_i2c_client(dev);
727 struct adt7475_data *data = i2c_get_clientdata(client);
728 int r;
729 long val;
730
731 if (strict_strtol(buf, 10, &val))
732 return -EINVAL;
733
734 mutex_lock(&data->lock);
735 /* Read Modify Write PWM values */
736 adt7475_read_pwm(client, sattr->index);
737 r = hw_set_pwm(client, sattr->index, val, data->pwmchan[sattr->index]);
738 if (r)
739 count = r;
740 mutex_unlock(&data->lock);
741
742 return count;
743}
744
745/* List of frequencies for the PWM */
746static const int pwmfreq_table[] = {
747 11, 14, 22, 29, 35, 44, 58, 88
748};
749
750static ssize_t show_pwmfreq(struct device *dev, struct device_attribute *attr,
751 char *buf)
752{
753 struct adt7475_data *data = adt7475_update_device(dev);
754 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
755
756 return sprintf(buf, "%d\n",
757 pwmfreq_table[data->range[sattr->index] & 7]);
758}
759
760static ssize_t set_pwmfreq(struct device *dev, struct device_attribute *attr,
761 const char *buf, size_t count)
762{
763 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
764 struct i2c_client *client = to_i2c_client(dev);
765 struct adt7475_data *data = i2c_get_clientdata(client);
766 int out;
767 long val;
768
769 if (strict_strtol(buf, 10, &val))
770 return -EINVAL;
771
772 out = find_nearest(val, pwmfreq_table, ARRAY_SIZE(pwmfreq_table));
773
774 mutex_lock(&data->lock);
775
776 data->range[sattr->index] =
777 adt7475_read(TEMP_TRANGE_REG(sattr->index));
778 data->range[sattr->index] &= ~7;
779 data->range[sattr->index] |= out;
780
781 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
782 data->range[sattr->index]);
783
784 mutex_unlock(&data->lock);
785 return count;
786}
787
f99318b2
JD		 788static ssize_t show_pwm_at_crit(struct device *dev,
789 struct device_attribute *devattr, char *buf)
790{
791 struct adt7475_data *data = adt7475_update_device(dev);
792 return sprintf(buf, "%d\n", !!(data->config4 & CONFIG4_MAXDUTY));
793}
794
795static ssize_t set_pwm_at_crit(struct device *dev,
796 struct device_attribute *devattr,
797 const char *buf, size_t count)
798{
799 struct i2c_client *client = to_i2c_client(dev);
800 struct adt7475_data *data = i2c_get_clientdata(client);
801 long val;
802
803 if (strict_strtol(buf, 10, &val))
804 return -EINVAL;
805 if (val != 0 && val != 1)
806 return -EINVAL;
807
808 mutex_lock(&data->lock);
809 data->config4 = i2c_smbus_read_byte_data(client, REG_CONFIG4);
810 if (val)
811 data->config4 |= CONFIG4_MAXDUTY;
812 else
813 data->config4 &= ~CONFIG4_MAXDUTY;
814 i2c_smbus_write_byte_data(client, REG_CONFIG4, data->config4);
815 mutex_unlock(&data->lock);
816
817 return count;
818}
819
cffb9dd0 820static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_voltage, NULL, INPUT, 1);
1c301fc5 821static SENSOR_DEVICE_ATTR_2(in1_max, S_IRUGO | S_IWUSR, show_voltage,
cffb9dd0 822 set_voltage, MAX, 1);
1c301fc5 823static SENSOR_DEVICE_ATTR_2(in1_min, S_IRUGO | S_IWUSR, show_voltage,
cffb9dd0
JD		 824 set_voltage, MIN, 1);
825static SENSOR_DEVICE_ATTR_2(in1_alarm, S_IRUGO, show_voltage, NULL, ALARM, 1);
826static SENSOR_DEVICE_ATTR_2(in2_input, S_IRUGO, show_voltage, NULL, INPUT, 2);
1c301fc5 827static SENSOR_DEVICE_ATTR_2(in2_max, S_IRUGO | S_IWUSR, show_voltage,
cffb9dd0 828 set_voltage, MAX, 2);
1c301fc5 829static SENSOR_DEVICE_ATTR_2(in2_min, S_IRUGO | S_IWUSR, show_voltage,
cffb9dd0
JD		 830 set_voltage, MIN, 2);
831static SENSOR_DEVICE_ATTR_2(in2_alarm, S_IRUGO, show_voltage, NULL, ALARM, 2);
1c301fc5
JC		 832static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, INPUT, 0);
833static SENSOR_DEVICE_ATTR_2(temp1_alarm, S_IRUGO, show_temp, NULL, ALARM, 0);
834static SENSOR_DEVICE_ATTR_2(temp1_fault, S_IRUGO, show_temp, NULL, FAULT, 0);
835static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
836 MAX, 0);
837static SENSOR_DEVICE_ATTR_2(temp1_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
838 MIN, 0);
839static SENSOR_DEVICE_ATTR_2(temp1_offset, S_IRUGO | S_IWUSR, show_temp,
840 set_temp, OFFSET, 0);
841static SENSOR_DEVICE_ATTR_2(temp1_auto_point1_temp, S_IRUGO | S_IWUSR,
842 show_temp, set_temp, AUTOMIN, 0);
843static SENSOR_DEVICE_ATTR_2(temp1_auto_point2_temp, S_IRUGO | S_IWUSR,
844 show_point2, set_point2, 0, 0);
845static SENSOR_DEVICE_ATTR_2(temp1_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
846 THERM, 0);
847static SENSOR_DEVICE_ATTR_2(temp1_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
848 set_temp, HYSTERSIS, 0);
849static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, INPUT, 1);
850static SENSOR_DEVICE_ATTR_2(temp2_alarm, S_IRUGO, show_temp, NULL, ALARM, 1);
851static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
852 MAX, 1);
853static SENSOR_DEVICE_ATTR_2(temp2_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
854 MIN, 1);
855static SENSOR_DEVICE_ATTR_2(temp2_offset, S_IRUGO | S_IWUSR, show_temp,
856 set_temp, OFFSET, 1);
857static SENSOR_DEVICE_ATTR_2(temp2_auto_point1_temp, S_IRUGO | S_IWUSR,
858 show_temp, set_temp, AUTOMIN, 1);
859static SENSOR_DEVICE_ATTR_2(temp2_auto_point2_temp, S_IRUGO | S_IWUSR,
860 show_point2, set_point2, 0, 1);
861static SENSOR_DEVICE_ATTR_2(temp2_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
862 THERM, 1);
863static SENSOR_DEVICE_ATTR_2(temp2_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
864 set_temp, HYSTERSIS, 1);
865static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, INPUT, 2);
866static SENSOR_DEVICE_ATTR_2(temp3_alarm, S_IRUGO, show_temp, NULL, ALARM, 2);
867static SENSOR_DEVICE_ATTR_2(temp3_fault, S_IRUGO, show_temp, NULL, FAULT, 2);
868static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
869 MAX, 2);
870static SENSOR_DEVICE_ATTR_2(temp3_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
871 MIN, 2);
872static SENSOR_DEVICE_ATTR_2(temp3_offset, S_IRUGO | S_IWUSR, show_temp,
873 set_temp, OFFSET, 2);
874static SENSOR_DEVICE_ATTR_2(temp3_auto_point1_temp, S_IRUGO | S_IWUSR,
875 show_temp, set_temp, AUTOMIN, 2);
876static SENSOR_DEVICE_ATTR_2(temp3_auto_point2_temp, S_IRUGO | S_IWUSR,
877 show_point2, set_point2, 0, 2);
878static SENSOR_DEVICE_ATTR_2(temp3_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
879 THERM, 2);
880static SENSOR_DEVICE_ATTR_2(temp3_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
881 set_temp, HYSTERSIS, 2);
882static SENSOR_DEVICE_ATTR_2(fan1_input, S_IRUGO, show_tach, NULL, INPUT, 0);
883static SENSOR_DEVICE_ATTR_2(fan1_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
884 MIN, 0);
885static SENSOR_DEVICE_ATTR_2(fan1_alarm, S_IRUGO, show_tach, NULL, ALARM, 0);
886static SENSOR_DEVICE_ATTR_2(fan2_input, S_IRUGO, show_tach, NULL, INPUT, 1);
887static SENSOR_DEVICE_ATTR_2(fan2_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
888 MIN, 1);
889static SENSOR_DEVICE_ATTR_2(fan2_alarm, S_IRUGO, show_tach, NULL, ALARM, 1);
890static SENSOR_DEVICE_ATTR_2(fan3_input, S_IRUGO, show_tach, NULL, INPUT, 2);
891static SENSOR_DEVICE_ATTR_2(fan3_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
892 MIN, 2);
893static SENSOR_DEVICE_ATTR_2(fan3_alarm, S_IRUGO, show_tach, NULL, ALARM, 2);
894static SENSOR_DEVICE_ATTR_2(fan4_input, S_IRUGO, show_tach, NULL, INPUT, 3);
895static SENSOR_DEVICE_ATTR_2(fan4_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
896 MIN, 3);
897static SENSOR_DEVICE_ATTR_2(fan4_alarm, S_IRUGO, show_tach, NULL, ALARM, 3);
898static SENSOR_DEVICE_ATTR_2(pwm1, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
899 0);
900static SENSOR_DEVICE_ATTR_2(pwm1_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
901 set_pwmfreq, INPUT, 0);
902static SENSOR_DEVICE_ATTR_2(pwm1_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
903 set_pwmctrl, INPUT, 0);
84d2a314 904static SENSOR_DEVICE_ATTR_2(pwm1_auto_channels_temp, S_IRUGO | S_IWUSR,
1c301fc5
JC		 905 show_pwmchan, set_pwmchan, INPUT, 0);
906static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
907 set_pwm, MIN, 0);
908static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
909 set_pwm, MAX, 0);
910static SENSOR_DEVICE_ATTR_2(pwm2, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
911 1);
912static SENSOR_DEVICE_ATTR_2(pwm2_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
913 set_pwmfreq, INPUT, 1);
914static SENSOR_DEVICE_ATTR_2(pwm2_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
915 set_pwmctrl, INPUT, 1);
84d2a314 916static SENSOR_DEVICE_ATTR_2(pwm2_auto_channels_temp, S_IRUGO | S_IWUSR,
1c301fc5
JC		 917 show_pwmchan, set_pwmchan, INPUT, 1);
918static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
919 set_pwm, MIN, 1);
920static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
921 set_pwm, MAX, 1);
922static SENSOR_DEVICE_ATTR_2(pwm3, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
923 2);
924static SENSOR_DEVICE_ATTR_2(pwm3_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
925 set_pwmfreq, INPUT, 2);
926static SENSOR_DEVICE_ATTR_2(pwm3_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
927 set_pwmctrl, INPUT, 2);
84d2a314 928static SENSOR_DEVICE_ATTR_2(pwm3_auto_channels_temp, S_IRUGO | S_IWUSR,
1c301fc5
JC		 929 show_pwmchan, set_pwmchan, INPUT, 2);
930static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
931 set_pwm, MIN, 2);
932static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
933 set_pwm, MAX, 2);
934
f99318b2
JD		 935/* Non-standard name, might need revisiting */
936static DEVICE_ATTR(pwm_use_point2_pwm_at_crit, S_IWUSR | S_IRUGO,
937 show_pwm_at_crit, set_pwm_at_crit);
938
1c301fc5
JC		 939static struct attribute *adt7475_attrs[] = {
940 &sensor_dev_attr_in1_input.dev_attr.attr,
941 &sensor_dev_attr_in1_max.dev_attr.attr,
942 &sensor_dev_attr_in1_min.dev_attr.attr,
943 &sensor_dev_attr_in1_alarm.dev_attr.attr,
944 &sensor_dev_attr_in2_input.dev_attr.attr,
945 &sensor_dev_attr_in2_max.dev_attr.attr,
946 &sensor_dev_attr_in2_min.dev_attr.attr,
947 &sensor_dev_attr_in2_alarm.dev_attr.attr,
948 &sensor_dev_attr_temp1_input.dev_attr.attr,
949 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
950 &sensor_dev_attr_temp1_fault.dev_attr.attr,
951 &sensor_dev_attr_temp1_max.dev_attr.attr,
952 &sensor_dev_attr_temp1_min.dev_attr.attr,
953 &sensor_dev_attr_temp1_offset.dev_attr.attr,
954 &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr,
955 &sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr,
956 &sensor_dev_attr_temp1_crit.dev_attr.attr,
957 &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
958 &sensor_dev_attr_temp2_input.dev_attr.attr,
959 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
960 &sensor_dev_attr_temp2_max.dev_attr.attr,
961 &sensor_dev_attr_temp2_min.dev_attr.attr,
962 &sensor_dev_attr_temp2_offset.dev_attr.attr,
963 &sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr,
964 &sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr,
965 &sensor_dev_attr_temp2_crit.dev_attr.attr,
966 &sensor_dev_attr_temp2_crit_hyst.dev_attr.attr,
967 &sensor_dev_attr_temp3_input.dev_attr.attr,
968 &sensor_dev_attr_temp3_fault.dev_attr.attr,
969 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
970 &sensor_dev_attr_temp3_max.dev_attr.attr,
971 &sensor_dev_attr_temp3_min.dev_attr.attr,
972 &sensor_dev_attr_temp3_offset.dev_attr.attr,
973 &sensor_dev_attr_temp3_auto_point1_temp.dev_attr.attr,
974 &sensor_dev_attr_temp3_auto_point2_temp.dev_attr.attr,
975 &sensor_dev_attr_temp3_crit.dev_attr.attr,
976 &sensor_dev_attr_temp3_crit_hyst.dev_attr.attr,
977 &sensor_dev_attr_fan1_input.dev_attr.attr,
978 &sensor_dev_attr_fan1_min.dev_attr.attr,
979 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
980 &sensor_dev_attr_fan2_input.dev_attr.attr,
981 &sensor_dev_attr_fan2_min.dev_attr.attr,
982 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
983 &sensor_dev_attr_fan3_input.dev_attr.attr,
984 &sensor_dev_attr_fan3_min.dev_attr.attr,
985 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
986 &sensor_dev_attr_fan4_input.dev_attr.attr,
987 &sensor_dev_attr_fan4_min.dev_attr.attr,
988 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
989 &sensor_dev_attr_pwm1.dev_attr.attr,
990 &sensor_dev_attr_pwm1_freq.dev_attr.attr,
991 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
84d2a314 992 &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
1c301fc5
JC		 993 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
994 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
995 &sensor_dev_attr_pwm2.dev_attr.attr,
996 &sensor_dev_attr_pwm2_freq.dev_attr.attr,
997 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
84d2a314 998 &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
1c301fc5
JC		 999 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1000 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1001 &sensor_dev_attr_pwm3.dev_attr.attr,
1002 &sensor_dev_attr_pwm3_freq.dev_attr.attr,
1003 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
84d2a314 1004 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
1c301fc5
JC		 1005 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1006 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
f99318b2 1007 &dev_attr_pwm_use_point2_pwm_at_crit.attr,
1c301fc5
JC		 1008 NULL,
1009};
1010
54ecb9e3 1011static struct attribute_group adt7475_attr_group = { .attrs = adt7475_attrs };
1c301fc5
JC		 1012
1013static int adt7475_detect(struct i2c_client *client, int kind,
1014 struct i2c_board_info *info)
1015{
1016 struct i2c_adapter *adapter = client->adapter;
b180d050
JD		 1017 int vendid, devid;
1018 const char *name;
1c301fc5
JC		 1019
1020 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1021 return -ENODEV;
1022
b180d050
JD		 1023 vendid = adt7475_read(REG_VENDID);
1024 devid = adt7475_read(REG_DEVID);
1025
1026 if (vendid == 0x41 && devid == 0x73)
1027 name = "adt7473";
1028 else if (vendid == 0x41 && devid == 0x75 && client->addr == 0x2e)
1029 name = "adt7475";
1030 else {
1031 dev_dbg(&adapter->dev,
1032 "Couldn't detect an ADT7473 or ADT7475 part at "
1033 "0x%02x\n", (unsigned int)client->addr);
52df6440 1034 return -ENODEV;
1c301fc5
JC		 1035 }
1036
b180d050 1037 strlcpy(info->type, name, I2C_NAME_SIZE);
1c301fc5
JC		 1038
1039 return 0;
1040}
1041
1042static int adt7475_probe(struct i2c_client *client,
1043 const struct i2c_device_id *id)
1044{
1045 struct adt7475_data *data;
1046 int i, ret = 0;
1047
1048 data = kzalloc(sizeof(*data), GFP_KERNEL);
1049 if (data == NULL)
1050 return -ENOMEM;
1051
1052 mutex_init(&data->lock);
1053 i2c_set_clientdata(client, data);
1054
cffb9dd0
JD		 1055 /* Initialize device-specific values */
1056 switch (id->driver_data) {
1057 default:
1058 data->has_voltage = 0x06; /* in1, in2 */
1059 }
1060
1c301fc5
JC		 1061 /* Call adt7475_read_pwm for all pwm's as this will reprogram any
1062 pwm's which are disabled to manual mode with 0% duty cycle */
1063 for (i = 0; i < ADT7475_PWM_COUNT; i++)
1064 adt7475_read_pwm(client, i);
1065
1066 ret = sysfs_create_group(&client->dev.kobj, &adt7475_attr_group);
1067 if (ret)
1068 goto efree;
1069
1070 data->hwmon_dev = hwmon_device_register(&client->dev);
1071 if (IS_ERR(data->hwmon_dev)) {
1072 ret = PTR_ERR(data->hwmon_dev);
1073 goto eremove;
1074 }
1075
1076 return 0;
1077
1078eremove:
1079 sysfs_remove_group(&client->dev.kobj, &adt7475_attr_group);
1080efree:
1081 kfree(data);
1082 return ret;
1083}
1084
1085static int adt7475_remove(struct i2c_client *client)
1086{
1087 struct adt7475_data *data = i2c_get_clientdata(client);
1088
1089 hwmon_device_unregister(data->hwmon_dev);
1090 sysfs_remove_group(&client->dev.kobj, &adt7475_attr_group);
1091 kfree(data);
1092
1093 return 0;
1094}
1095
1096static struct i2c_driver adt7475_driver = {
1097 .class = I2C_CLASS_HWMON,
1098 .driver = {
1099 .name = "adt7475",
1100 },
1101 .probe = adt7475_probe,
1102 .remove = adt7475_remove,
1103 .id_table = adt7475_id,
1104 .detect = adt7475_detect,
1105 .address_data = &addr_data,
1106};
1107
1108static void adt7475_read_hystersis(struct i2c_client *client)
1109{
1110 struct adt7475_data *data = i2c_get_clientdata(client);
1111
1112 data->temp[HYSTERSIS][0] = (u16) adt7475_read(REG_REMOTE1_HYSTERSIS);
1113 data->temp[HYSTERSIS][1] = data->temp[HYSTERSIS][0];
1114 data->temp[HYSTERSIS][2] = (u16) adt7475_read(REG_REMOTE2_HYSTERSIS);
1115}
1116
1117static void adt7475_read_pwm(struct i2c_client *client, int index)
1118{
1119 struct adt7475_data *data = i2c_get_clientdata(client);
1120 unsigned int v;
1121
1122 data->pwm[CONTROL][index] = adt7475_read(PWM_CONFIG_REG(index));
1123
1124 /* Figure out the internal value for pwmctrl and pwmchan
1125 based on the current settings */
1126 v = (data->pwm[CONTROL][index] >> 5) & 7;
1127
1128 if (v == 3)
1129 data->pwmctl[index] = 0;
1130 else if (v == 7)
1131 data->pwmctl[index] = 1;
1132 else if (v == 4) {
1133 /* The fan is disabled - we don't want to
1134 support that, so change to manual mode and
1135 set the duty cycle to 0 instead
1136 */
1137 data->pwm[INPUT][index] = 0;
1138 data->pwm[CONTROL][index] &= ~0xE0;
1139 data->pwm[CONTROL][index] |= (7 << 5);
1140
1141 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
1142 data->pwm[INPUT][index]);
1143
1144 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
1145 data->pwm[CONTROL][index]);
1146
1147 data->pwmctl[index] = 1;
1148 } else {
1149 data->pwmctl[index] = 2;
1150
1151 switch (v) {
1152 case 0:
1153 data->pwmchan[index] = 1;
1154 break;
1155 case 1:
1156 data->pwmchan[index] = 2;
1157 break;
1158 case 2:
1159 data->pwmchan[index] = 4;
1160 break;
1161 case 5:
1162 data->pwmchan[index] = 6;
1163 break;
1164 case 6:
1165 data->pwmchan[index] = 7;
1166 break;
1167 }
1168 }
1169}
1170
1171static struct adt7475_data *adt7475_update_device(struct device *dev)
1172{
1173 struct i2c_client *client = to_i2c_client(dev);
1174 struct adt7475_data *data = i2c_get_clientdata(client);
1175 u8 ext;
1176 int i;
1177
1178 mutex_lock(&data->lock);
1179
1180 /* Measurement values update every 2 seconds */
1181 if (time_after(jiffies, data->measure_updated + HZ * 2) ||
1182 !data->valid) {
1183 data->alarms = adt7475_read(REG_STATUS2) << 8;
1184 data->alarms |= adt7475_read(REG_STATUS1);
1185
1186 ext = adt7475_read(REG_EXTEND1);
cffb9dd0
JD		 1187 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
1188 if (!(data->has_voltage & (1 << i)))
1189 continue;
1c301fc5
JC		 1190 data->voltage[INPUT][i] =
1191 (adt7475_read(VOLTAGE_REG(i)) << 2) |
cffb9dd0
JD		 1192 ((ext >> (i * 2)) & 3);
1193 }
1c301fc5
JC		 1194
1195 ext = adt7475_read(REG_EXTEND2);
1196 for (i = 0; i < ADT7475_TEMP_COUNT; i++)
1197 data->temp[INPUT][i] =
1198 (adt7475_read(TEMP_REG(i)) << 2) |
1199 ((ext >> ((i + 1) * 2)) & 3);
1200
1201 for (i = 0; i < ADT7475_TACH_COUNT; i++)
1202 data->tach[INPUT][i] =
1203 adt7475_read_word(client, TACH_REG(i));
1204
1205 /* Updated by hw when in auto mode */
1206 for (i = 0; i < ADT7475_PWM_COUNT; i++)
1207 data->pwm[INPUT][i] = adt7475_read(PWM_REG(i));
1208
1209 data->measure_updated = jiffies;
1210 }
1211
1212 /* Limits and settings, should never change update every 60 seconds */
56e35eee 1213 if (time_after(jiffies, data->limits_updated + HZ * 60) ||
1c301fc5 1214 !data->valid) {
f99318b2 1215 data->config4 = adt7475_read(REG_CONFIG4);
1c301fc5
JC		 1216 data->config5 = adt7475_read(REG_CONFIG5);
1217
1218 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
cffb9dd0
JD		 1219 if (!(data->has_voltage & (1 << i)))
1220 continue;
1c301fc5
JC		 1221 /* Adjust values so they match the input precision */
1222 data->voltage[MIN][i] =
1223 adt7475_read(VOLTAGE_MIN_REG(i)) << 2;
1224 data->voltage[MAX][i] =
1225 adt7475_read(VOLTAGE_MAX_REG(i)) << 2;
1226 }
1227
1228 for (i = 0; i < ADT7475_TEMP_COUNT; i++) {
1229 /* Adjust values so they match the input precision */
1230 data->temp[MIN][i] =
1231 adt7475_read(TEMP_MIN_REG(i)) << 2;
1232 data->temp[MAX][i] =
1233 adt7475_read(TEMP_MAX_REG(i)) << 2;
1234 data->temp[AUTOMIN][i] =
1235 adt7475_read(TEMP_TMIN_REG(i)) << 2;
1236 data->temp[THERM][i] =
1237 adt7475_read(TEMP_THERM_REG(i)) << 2;
1238 data->temp[OFFSET][i] =
1239 adt7475_read(TEMP_OFFSET_REG(i));
1240 }
1241 adt7475_read_hystersis(client);
1242
1243 for (i = 0; i < ADT7475_TACH_COUNT; i++)
1244 data->tach[MIN][i] =
1245 adt7475_read_word(client, TACH_MIN_REG(i));
1246
1247 for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1248 data->pwm[MAX][i] = adt7475_read(PWM_MAX_REG(i));
1249 data->pwm[MIN][i] = adt7475_read(PWM_MIN_REG(i));
1250 /* Set the channel and control information */
1251 adt7475_read_pwm(client, i);
1252 }
1253
1254 data->range[0] = adt7475_read(TEMP_TRANGE_REG(0));
1255 data->range[1] = adt7475_read(TEMP_TRANGE_REG(1));
1256 data->range[2] = adt7475_read(TEMP_TRANGE_REG(2));
1257
1258 data->limits_updated = jiffies;
1259 data->valid = 1;
1260 }
1261
1262 mutex_unlock(&data->lock);
1263
1264 return data;
1265}
1266
1267static int __init sensors_adt7475_init(void)
1268{
1269 return i2c_add_driver(&adt7475_driver);
1270}
1271
1272static void __exit sensors_adt7475_exit(void)
1273{
1274 i2c_del_driver(&adt7475_driver);
1275}
1276
1277MODULE_AUTHOR("Advanced Micro Devices, Inc");
1278MODULE_DESCRIPTION("adt7475 driver");
1279MODULE_LICENSE("GPL");
1280
1281module_init(sensors_adt7475_init);
1282module_exit(sensors_adt7475_exit);
Linux kernel - Deliverables
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