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hwmon: (adt7475) Handle alternative pin functions
[linux-2.6-block.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>
3d849981
JD		 6 * Copyright (C) 2009 Jean Delvare <khali@linux-fr.org>
7 *
1c301fc5
JC		 8 * Derived from the lm83 driver by Jean Delvare
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
13 */
14
15#include <linux/module.h>
16#include <linux/init.h>
17#include <linux/slab.h>
18#include <linux/i2c.h>
19#include <linux/hwmon.h>
20#include <linux/hwmon-sysfs.h>
21#include <linux/err.h>
22
23/* Indexes for the sysfs hooks */
24
25#define INPUT 0
26#define MIN 1
27#define MAX 2
28#define CONTROL 3
29#define OFFSET 3
30#define AUTOMIN 4
31#define THERM 5
32#define HYSTERSIS 6
33
34/* These are unique identifiers for the sysfs functions - unlike the
35 numbers above, these are not also indexes into an array
36*/
37
38#define ALARM 9
39#define FAULT 10
40
41/* 7475 Common Registers */
42
3d849981
JD		 43#define REG_VTT 0x1E /* ADT7490 only */
44#define REG_EXTEND3 0x1F /* ADT7490 only */
45
cffb9dd0 46#define REG_VOLTAGE_BASE 0x20
1c301fc5
JC		 47#define REG_TEMP_BASE 0x25
48#define REG_TACH_BASE 0x28
49#define REG_PWM_BASE 0x30
50#define REG_PWM_MAX_BASE 0x38
51
52#define REG_DEVID 0x3D
53#define REG_VENDID 0x3E
d656b6fd 54#define REG_DEVID2 0x3F
1c301fc5
JC		 55
56#define REG_STATUS1 0x41
57#define REG_STATUS2 0x42
58
cffb9dd0
JD		 59#define REG_VOLTAGE_MIN_BASE 0x44
60#define REG_VOLTAGE_MAX_BASE 0x45
1c301fc5
JC		 61
62#define REG_TEMP_MIN_BASE 0x4E
63#define REG_TEMP_MAX_BASE 0x4F
64
65#define REG_TACH_MIN_BASE 0x54
66
67#define REG_PWM_CONFIG_BASE 0x5C
68
69#define REG_TEMP_TRANGE_BASE 0x5F
70
71#define REG_PWM_MIN_BASE 0x64
72
73#define REG_TEMP_TMIN_BASE 0x67
74#define REG_TEMP_THERM_BASE 0x6A
75
76#define REG_REMOTE1_HYSTERSIS 0x6D
77#define REG_REMOTE2_HYSTERSIS 0x6E
78
79#define REG_TEMP_OFFSET_BASE 0x70
80
81#define REG_EXTEND1 0x76
82#define REG_EXTEND2 0x77
378933c9
JD		 83
84#define REG_CONFIG3 0x78
1c301fc5 85#define REG_CONFIG5 0x7C
f99318b2
JD		 86#define REG_CONFIG4 0x7D
87
3d849981
JD		 88#define REG_STATUS4 0x81 /* ADT7490 only */
89
90#define REG_VTT_MIN 0x84 /* ADT7490 only */
91#define REG_VTT_MAX 0x86 /* ADT7490 only */
92
378933c9
JD		 93#define CONFIG3_SMBALERT 0x01
94#define CONFIG3_THERM 0x02
95
96#define CONFIG4_PINFUNC 0x03
f99318b2 97#define CONFIG4_MAXDUTY 0x08
1c301fc5
JC		 98
99#define CONFIG5_TWOSCOMP 0x01
100#define CONFIG5_TEMPOFFSET 0x02
101
102/* ADT7475 Settings */
103
cffb9dd0 104#define ADT7475_VOLTAGE_COUNT 5 /* Not counting Vtt */
1c301fc5
JC		 105#define ADT7475_TEMP_COUNT 3
106#define ADT7475_TACH_COUNT 4
107#define ADT7475_PWM_COUNT 3
108
109/* Macro to read the registers */
110
111#define adt7475_read(reg) i2c_smbus_read_byte_data(client, (reg))
112
113/* Macros to easily index the registers */
114
115#define TACH_REG(idx) (REG_TACH_BASE + ((idx) * 2))
116#define TACH_MIN_REG(idx) (REG_TACH_MIN_BASE + ((idx) * 2))
117
118#define PWM_REG(idx) (REG_PWM_BASE + (idx))
119#define PWM_MAX_REG(idx) (REG_PWM_MAX_BASE + (idx))
120#define PWM_MIN_REG(idx) (REG_PWM_MIN_BASE + (idx))
121#define PWM_CONFIG_REG(idx) (REG_PWM_CONFIG_BASE + (idx))
122
123#define VOLTAGE_REG(idx) (REG_VOLTAGE_BASE + (idx))
124#define VOLTAGE_MIN_REG(idx) (REG_VOLTAGE_MIN_BASE + ((idx) * 2))
125#define VOLTAGE_MAX_REG(idx) (REG_VOLTAGE_MAX_BASE + ((idx) * 2))
126
127#define TEMP_REG(idx) (REG_TEMP_BASE + (idx))
128#define TEMP_MIN_REG(idx) (REG_TEMP_MIN_BASE + ((idx) * 2))
129#define TEMP_MAX_REG(idx) (REG_TEMP_MAX_BASE + ((idx) * 2))
130#define TEMP_TMIN_REG(idx) (REG_TEMP_TMIN_BASE + (idx))
131#define TEMP_THERM_REG(idx) (REG_TEMP_THERM_BASE + (idx))
132#define TEMP_OFFSET_REG(idx) (REG_TEMP_OFFSET_BASE + (idx))
133#define TEMP_TRANGE_REG(idx) (REG_TEMP_TRANGE_BASE + (idx))
134
b180d050 135static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
1c301fc5 136
3d849981 137I2C_CLIENT_INSMOD_3(adt7473, adt7475, adt7490);
1c301fc5
JC		 138
139static const struct i2c_device_id adt7475_id[] = {
b180d050 140 { "adt7473", adt7473 },
1c301fc5 141 { "adt7475", adt7475 },
3d849981 142 { "adt7490", adt7490 },
1c301fc5
JC		 143 { }
144};
145MODULE_DEVICE_TABLE(i2c, adt7475_id);
146
147struct adt7475_data {
148 struct device *hwmon_dev;
149 struct mutex lock;
150
151 unsigned long measure_updated;
152 unsigned long limits_updated;
153 char valid;
154
f99318b2 155 u8 config4;
1c301fc5 156 u8 config5;
cffb9dd0 157 u8 has_voltage;
378933c9
JD		 158 u8 has_pwm2:1;
159 u8 has_fan4:1;
3d849981 160 u32 alarms;
cffb9dd0 161 u16 voltage[3][6];
1c301fc5
JC		 162 u16 temp[7][3];
163 u16 tach[2][4];
164 u8 pwm[4][3];
165 u8 range[3];
166 u8 pwmctl[3];
167 u8 pwmchan[3];
168};
169
170static struct i2c_driver adt7475_driver;
171static struct adt7475_data *adt7475_update_device(struct device *dev);
172static void adt7475_read_hystersis(struct i2c_client *client);
173static void adt7475_read_pwm(struct i2c_client *client, int index);
174
175/* Given a temp value, convert it to register value */
176
177static inline u16 temp2reg(struct adt7475_data *data, long val)
178{
179 u16 ret;
180
181 if (!(data->config5 & CONFIG5_TWOSCOMP)) {
182 val = SENSORS_LIMIT(val, -64000, 191000);
183 ret = (val + 64500) / 1000;
184 } else {
185 val = SENSORS_LIMIT(val, -128000, 127000);
186 if (val < -500)
187 ret = (256500 + val) / 1000;
188 else
189 ret = (val + 500) / 1000;
190 }
191
192 return ret << 2;
193}
194
195/* Given a register value, convert it to a real temp value */
196
197static inline int reg2temp(struct adt7475_data *data, u16 reg)
198{
199 if (data->config5 & CONFIG5_TWOSCOMP) {
200 if (reg >= 512)
201 return (reg - 1024) * 250;
202 else
203 return reg * 250;
204 } else
205 return (reg - 256) * 250;
206}
207
208static inline int tach2rpm(u16 tach)
209{
210 if (tach == 0 || tach == 0xFFFF)
211 return 0;
212
213 return (90000 * 60) / tach;
214}
215
216static inline u16 rpm2tach(unsigned long rpm)
217{
218 if (rpm == 0)
219 return 0;
220
221 return SENSORS_LIMIT((90000 * 60) / rpm, 1, 0xFFFF);
222}
223
cffb9dd0
JD		 224/* Scaling factors for voltage inputs, taken from the ADT7490 datasheet */
225static const int adt7473_in_scaling[ADT7475_VOLTAGE_COUNT + 1][2] = {
226 { 45, 94 }, /* +2.5V */
227 { 175, 525 }, /* Vccp */
228 { 68, 71 }, /* Vcc */
229 { 93, 47 }, /* +5V */
230 { 120, 20 }, /* +12V */
231 { 45, 45 }, /* Vtt */
232};
1c301fc5 233
cffb9dd0 234static inline int reg2volt(int channel, u16 reg)
1c301fc5 235{
cffb9dd0 236 const int *r = adt7473_in_scaling[channel];
1c301fc5 237
cffb9dd0 238 return DIV_ROUND_CLOSEST(reg * (r[0] + r[1]) * 2250, r[1] * 1024);
1c301fc5
JC		 239}
240
cffb9dd0 241static inline u16 volt2reg(int channel, long volt)
1c301fc5 242{
cffb9dd0
JD		 243 const int *r = adt7473_in_scaling[channel];
244 long reg;
245
246 reg = (volt * r[1] * 1024) / ((r[0] + r[1]) * 2250);
247 return SENSORS_LIMIT(reg, 0, 1023) & (0xff << 2);
1c301fc5
JC		 248}
249
250static u16 adt7475_read_word(struct i2c_client *client, int reg)
251{
252 u16 val;
253
254 val = i2c_smbus_read_byte_data(client, reg);
255 val |= (i2c_smbus_read_byte_data(client, reg + 1) << 8);
256
257 return val;
258}
259
260static void adt7475_write_word(struct i2c_client *client, int reg, u16 val)
261{
262 i2c_smbus_write_byte_data(client, reg + 1, val >> 8);
263 i2c_smbus_write_byte_data(client, reg, val & 0xFF);
264}
265
266/* Find the nearest value in a table - used for pwm frequency and
267 auto temp range */
268static int find_nearest(long val, const int *array, int size)
269{
270 int i;
271
272 if (val < array[0])
273 return 0;
274
275 if (val > array[size - 1])
276 return size - 1;
277
278 for (i = 0; i < size - 1; i++) {
279 int a, b;
280
281 if (val > array[i + 1])
282 continue;
283
284 a = val - array[i];
285 b = array[i + 1] - val;
286
287 return (a <= b) ? i : i + 1;
288 }
289
290 return 0;
291}
292
293static ssize_t show_voltage(struct device *dev, struct device_attribute *attr,
294 char *buf)
295{
296 struct adt7475_data *data = adt7475_update_device(dev);
297 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
298 unsigned short val;
299
300 switch (sattr->nr) {
301 case ALARM:
302 return sprintf(buf, "%d\n",
cffb9dd0 303 (data->alarms >> sattr->index) & 1);
1c301fc5
JC		 304 default:
305 val = data->voltage[sattr->nr][sattr->index];
cffb9dd0 306 return sprintf(buf, "%d\n", reg2volt(sattr->index, val));
1c301fc5
JC		 307 }
308}
309
310static ssize_t set_voltage(struct device *dev, struct device_attribute *attr,
311 const char *buf, size_t count)
312{
313
314 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
315 struct i2c_client *client = to_i2c_client(dev);
316 struct adt7475_data *data = i2c_get_clientdata(client);
317 unsigned char reg;
318 long val;
319
320 if (strict_strtol(buf, 10, &val))
321 return -EINVAL;
322
323 mutex_lock(&data->lock);
324
cffb9dd0 325 data->voltage[sattr->nr][sattr->index] = volt2reg(sattr->index, val);
1c301fc5 326
3d849981
JD		 327 if (sattr->index < ADT7475_VOLTAGE_COUNT) {
328 if (sattr->nr == MIN)
329 reg = VOLTAGE_MIN_REG(sattr->index);
330 else
331 reg = VOLTAGE_MAX_REG(sattr->index);
332 } else {
333 if (sattr->nr == MIN)
334 reg = REG_VTT_MIN;
335 else
336 reg = REG_VTT_MAX;
337 }
1c301fc5
JC		 338
339 i2c_smbus_write_byte_data(client, reg,
340 data->voltage[sattr->nr][sattr->index] >> 2);
341 mutex_unlock(&data->lock);
342
343 return count;
344}
345
346static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
347 char *buf)
348{
349 struct adt7475_data *data = adt7475_update_device(dev);
350 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
351 int out;
352
353 switch (sattr->nr) {
354 case HYSTERSIS:
355 mutex_lock(&data->lock);
356 out = data->temp[sattr->nr][sattr->index];
357 if (sattr->index != 1)
358 out = (out >> 4) & 0xF;
359 else
360 out = (out & 0xF);
361 /* Show the value as an absolute number tied to
362 * THERM */
363 out = reg2temp(data, data->temp[THERM][sattr->index]) -
364 out * 1000;
365 mutex_unlock(&data->lock);
366 break;
367
368 case OFFSET:
369 /* Offset is always 2's complement, regardless of the
370 * setting in CONFIG5 */
371 mutex_lock(&data->lock);
372 out = (s8)data->temp[sattr->nr][sattr->index];
373 if (data->config5 & CONFIG5_TEMPOFFSET)
374 out *= 1000;
375 else
376 out *= 500;
377 mutex_unlock(&data->lock);
378 break;
379
380 case ALARM:
381 out = (data->alarms >> (sattr->index + 4)) & 1;
382 break;
383
384 case FAULT:
385 /* Note - only for remote1 and remote2 */
cf312e07 386 out = !!(data->alarms & (sattr->index ? 0x8000 : 0x4000));
1c301fc5
JC		 387 break;
388
389 default:
390 /* All other temp values are in the configured format */
391 out = reg2temp(data, data->temp[sattr->nr][sattr->index]);
392 }
393
394 return sprintf(buf, "%d\n", out);
395}
396
397static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
398 const char *buf, size_t count)
399{
400 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
401 struct i2c_client *client = to_i2c_client(dev);
402 struct adt7475_data *data = i2c_get_clientdata(client);
403 unsigned char reg = 0;
404 u8 out;
405 int temp;
406 long val;
407
408 if (strict_strtol(buf, 10, &val))
409 return -EINVAL;
410
411 mutex_lock(&data->lock);
412
413 /* We need the config register in all cases for temp <-> reg conv. */
414 data->config5 = adt7475_read(REG_CONFIG5);
415
416 switch (sattr->nr) {
417 case OFFSET:
418 if (data->config5 & CONFIG5_TEMPOFFSET) {
419 val = SENSORS_LIMIT(val, -63000, 127000);
420 out = data->temp[OFFSET][sattr->index] = val / 1000;
421 } else {
422 val = SENSORS_LIMIT(val, -63000, 64000);
423 out = data->temp[OFFSET][sattr->index] = val / 500;
424 }
425 break;
426
427 case HYSTERSIS:
428 /* The value will be given as an absolute value, turn it
429 into an offset based on THERM */
430
431 /* Read fresh THERM and HYSTERSIS values from the chip */
432 data->temp[THERM][sattr->index] =
433 adt7475_read(TEMP_THERM_REG(sattr->index)) << 2;
434 adt7475_read_hystersis(client);
435
436 temp = reg2temp(data, data->temp[THERM][sattr->index]);
437 val = SENSORS_LIMIT(val, temp - 15000, temp);
438 val = (temp - val) / 1000;
439
440 if (sattr->index != 1) {
441 data->temp[HYSTERSIS][sattr->index] &= 0xF0;
442 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF) << 4;
443 } else {
444 data->temp[HYSTERSIS][sattr->index] &= 0x0F;
445 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF);
446 }
447
448 out = data->temp[HYSTERSIS][sattr->index];
449 break;
450
451 default:
452 data->temp[sattr->nr][sattr->index] = temp2reg(data, val);
453
454 /* We maintain an extra 2 digits of precision for simplicity
455 * - shift those back off before writing the value */
456 out = (u8) (data->temp[sattr->nr][sattr->index] >> 2);
457 }
458
459 switch (sattr->nr) {
460 case MIN:
461 reg = TEMP_MIN_REG(sattr->index);
462 break;
463 case MAX:
464 reg = TEMP_MAX_REG(sattr->index);
465 break;
466 case OFFSET:
467 reg = TEMP_OFFSET_REG(sattr->index);
468 break;
469 case AUTOMIN:
470 reg = TEMP_TMIN_REG(sattr->index);
471 break;
472 case THERM:
473 reg = TEMP_THERM_REG(sattr->index);
474 break;
475 case HYSTERSIS:
476 if (sattr->index != 2)
477 reg = REG_REMOTE1_HYSTERSIS;
478 else
479 reg = REG_REMOTE2_HYSTERSIS;
480
481 break;
482 }
483
484 i2c_smbus_write_byte_data(client, reg, out);
485
486 mutex_unlock(&data->lock);
487 return count;
488}
489
490/* Table of autorange values - the user will write the value in millidegrees,
491 and we'll convert it */
492static const int autorange_table[] = {
493 2000, 2500, 3330, 4000, 5000, 6670, 8000,
494 10000, 13330, 16000, 20000, 26670, 32000, 40000,
495 53330, 80000
496};
497
498static ssize_t show_point2(struct device *dev, struct device_attribute *attr,
499 char *buf)
500{
501 struct adt7475_data *data = adt7475_update_device(dev);
502 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
503 int out, val;
504
505 mutex_lock(&data->lock);
506 out = (data->range[sattr->index] >> 4) & 0x0F;
507 val = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
508 mutex_unlock(&data->lock);
509
510 return sprintf(buf, "%d\n", val + autorange_table[out]);
511}
512
513static ssize_t set_point2(struct device *dev, struct device_attribute *attr,
514 const char *buf, size_t count)
515{
516 struct i2c_client *client = to_i2c_client(dev);
517 struct adt7475_data *data = i2c_get_clientdata(client);
518 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
519 int temp;
520 long val;
521
522 if (strict_strtol(buf, 10, &val))
523 return -EINVAL;
524
525 mutex_lock(&data->lock);
526
527 /* Get a fresh copy of the needed registers */
528 data->config5 = adt7475_read(REG_CONFIG5);
529 data->temp[AUTOMIN][sattr->index] =
530 adt7475_read(TEMP_TMIN_REG(sattr->index)) << 2;
531 data->range[sattr->index] =
532 adt7475_read(TEMP_TRANGE_REG(sattr->index));
533
534 /* The user will write an absolute value, so subtract the start point
535 to figure the range */
536 temp = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
537 val = SENSORS_LIMIT(val, temp + autorange_table[0],
538 temp + autorange_table[ARRAY_SIZE(autorange_table) - 1]);
539 val -= temp;
540
541 /* Find the nearest table entry to what the user wrote */
542 val = find_nearest(val, autorange_table, ARRAY_SIZE(autorange_table));
543
544 data->range[sattr->index] &= ~0xF0;
545 data->range[sattr->index] |= val << 4;
546
547 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
548 data->range[sattr->index]);
549
550 mutex_unlock(&data->lock);
551 return count;
552}
553
554static ssize_t show_tach(struct device *dev, struct device_attribute *attr,
555 char *buf)
556{
557 struct adt7475_data *data = adt7475_update_device(dev);
558 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
559 int out;
560
561 if (sattr->nr == ALARM)
562 out = (data->alarms >> (sattr->index + 10)) & 1;
563 else
564 out = tach2rpm(data->tach[sattr->nr][sattr->index]);
565
566 return sprintf(buf, "%d\n", out);
567}
568
569static ssize_t set_tach(struct device *dev, struct device_attribute *attr,
570 const char *buf, size_t count)
571{
572
573 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
574 struct i2c_client *client = to_i2c_client(dev);
575 struct adt7475_data *data = i2c_get_clientdata(client);
576 unsigned long val;
577
578 if (strict_strtoul(buf, 10, &val))
579 return -EINVAL;
580
581 mutex_lock(&data->lock);
582
583 data->tach[MIN][sattr->index] = rpm2tach(val);
584
585 adt7475_write_word(client, TACH_MIN_REG(sattr->index),
586 data->tach[MIN][sattr->index]);
587
588 mutex_unlock(&data->lock);
589 return count;
590}
591
592static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
593 char *buf)
594{
595 struct adt7475_data *data = adt7475_update_device(dev);
596 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
597
598 return sprintf(buf, "%d\n", data->pwm[sattr->nr][sattr->index]);
599}
600
601static ssize_t show_pwmchan(struct device *dev, struct device_attribute *attr,
602 char *buf)
603{
604 struct adt7475_data *data = adt7475_update_device(dev);
605 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
606
607 return sprintf(buf, "%d\n", data->pwmchan[sattr->index]);
608}
609
610static ssize_t show_pwmctrl(struct device *dev, struct device_attribute *attr,
611 char *buf)
612{
613 struct adt7475_data *data = adt7475_update_device(dev);
614 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
615
616 return sprintf(buf, "%d\n", data->pwmctl[sattr->index]);
617}
618
619static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
620 const char *buf, size_t count)
621{
622
623 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
624 struct i2c_client *client = to_i2c_client(dev);
625 struct adt7475_data *data = i2c_get_clientdata(client);
626 unsigned char reg = 0;
627 long val;
628
629 if (strict_strtol(buf, 10, &val))
630 return -EINVAL;
631
632 mutex_lock(&data->lock);
633
634 switch (sattr->nr) {
635 case INPUT:
636 /* Get a fresh value for CONTROL */
637 data->pwm[CONTROL][sattr->index] =
638 adt7475_read(PWM_CONFIG_REG(sattr->index));
639
640 /* If we are not in manual mode, then we shouldn't allow
641 * the user to set the pwm speed */
642 if (((data->pwm[CONTROL][sattr->index] >> 5) & 7) != 7) {
643 mutex_unlock(&data->lock);
644 return count;
645 }
646
647 reg = PWM_REG(sattr->index);
648 break;
649
650 case MIN:
651 reg = PWM_MIN_REG(sattr->index);
652 break;
653
654 case MAX:
655 reg = PWM_MAX_REG(sattr->index);
656 break;
657 }
658
659 data->pwm[sattr->nr][sattr->index] = SENSORS_LIMIT(val, 0, 0xFF);
660 i2c_smbus_write_byte_data(client, reg,
661 data->pwm[sattr->nr][sattr->index]);
662
663 mutex_unlock(&data->lock);
664
665 return count;
666}
667
668/* Called by set_pwmctrl and set_pwmchan */
669
670static int hw_set_pwm(struct i2c_client *client, int index,
671 unsigned int pwmctl, unsigned int pwmchan)
672{
673 struct adt7475_data *data = i2c_get_clientdata(client);
674 long val = 0;
675
676 switch (pwmctl) {
677 case 0:
678 val = 0x03; /* Run at full speed */
679 break;
680 case 1:
681 val = 0x07; /* Manual mode */
682 break;
683 case 2:
684 switch (pwmchan) {
685 case 1:
686 /* Remote1 controls PWM */
687 val = 0x00;
688 break;
689 case 2:
690 /* local controls PWM */
691 val = 0x01;
692 break;
693 case 4:
694 /* remote2 controls PWM */
695 val = 0x02;
696 break;
697 case 6:
698 /* local/remote2 control PWM */
699 val = 0x05;
700 break;
701 case 7:
702 /* All three control PWM */
703 val = 0x06;
704 break;
705 default:
706 return -EINVAL;
707 }
708 break;
709 default:
710 return -EINVAL;
711 }
712
713 data->pwmctl[index] = pwmctl;
714 data->pwmchan[index] = pwmchan;
715
716 data->pwm[CONTROL][index] &= ~0xE0;
717 data->pwm[CONTROL][index] |= (val & 7) << 5;
718
719 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
720 data->pwm[CONTROL][index]);
721
722 return 0;
723}
724
725static ssize_t set_pwmchan(struct device *dev, struct device_attribute *attr,
726 const char *buf, size_t count)
727{
728 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
729 struct i2c_client *client = to_i2c_client(dev);
730 struct adt7475_data *data = i2c_get_clientdata(client);
731 int r;
732 long val;
733
734 if (strict_strtol(buf, 10, &val))
735 return -EINVAL;
736
737 mutex_lock(&data->lock);
738 /* Read Modify Write PWM values */
739 adt7475_read_pwm(client, sattr->index);
740 r = hw_set_pwm(client, sattr->index, data->pwmctl[sattr->index], val);
741 if (r)
742 count = r;
743 mutex_unlock(&data->lock);
744
745 return count;
746}
747
748static ssize_t set_pwmctrl(struct device *dev, struct device_attribute *attr,
749 const char *buf, size_t count)
750{
751 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
752 struct i2c_client *client = to_i2c_client(dev);
753 struct adt7475_data *data = i2c_get_clientdata(client);
754 int r;
755 long val;
756
757 if (strict_strtol(buf, 10, &val))
758 return -EINVAL;
759
760 mutex_lock(&data->lock);
761 /* Read Modify Write PWM values */
762 adt7475_read_pwm(client, sattr->index);
763 r = hw_set_pwm(client, sattr->index, val, data->pwmchan[sattr->index]);
764 if (r)
765 count = r;
766 mutex_unlock(&data->lock);
767
768 return count;
769}
770
771/* List of frequencies for the PWM */
772static const int pwmfreq_table[] = {
773 11, 14, 22, 29, 35, 44, 58, 88
774};
775
776static ssize_t show_pwmfreq(struct device *dev, struct device_attribute *attr,
777 char *buf)
778{
779 struct adt7475_data *data = adt7475_update_device(dev);
780 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
781
782 return sprintf(buf, "%d\n",
783 pwmfreq_table[data->range[sattr->index] & 7]);
784}
785
786static ssize_t set_pwmfreq(struct device *dev, struct device_attribute *attr,
787 const char *buf, size_t count)
788{
789 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
790 struct i2c_client *client = to_i2c_client(dev);
791 struct adt7475_data *data = i2c_get_clientdata(client);
792 int out;
793 long val;
794
795 if (strict_strtol(buf, 10, &val))
796 return -EINVAL;
797
798 out = find_nearest(val, pwmfreq_table, ARRAY_SIZE(pwmfreq_table));
799
800 mutex_lock(&data->lock);
801
802 data->range[sattr->index] =
803 adt7475_read(TEMP_TRANGE_REG(sattr->index));
804 data->range[sattr->index] &= ~7;
805 data->range[sattr->index] |= out;
806
807 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
808 data->range[sattr->index]);
809
810 mutex_unlock(&data->lock);
811 return count;
812}
813
f99318b2
JD		 814static ssize_t show_pwm_at_crit(struct device *dev,
815 struct device_attribute *devattr, char *buf)
816{
817 struct adt7475_data *data = adt7475_update_device(dev);
818 return sprintf(buf, "%d\n", !!(data->config4 & CONFIG4_MAXDUTY));
819}
820
821static ssize_t set_pwm_at_crit(struct device *dev,
822 struct device_attribute *devattr,
823 const char *buf, size_t count)
824{
825 struct i2c_client *client = to_i2c_client(dev);
826 struct adt7475_data *data = i2c_get_clientdata(client);
827 long val;
828
829 if (strict_strtol(buf, 10, &val))
830 return -EINVAL;
831 if (val != 0 && val != 1)
832 return -EINVAL;
833
834 mutex_lock(&data->lock);
835 data->config4 = i2c_smbus_read_byte_data(client, REG_CONFIG4);
836 if (val)
837 data->config4 |= CONFIG4_MAXDUTY;
838 else
839 data->config4 &= ~CONFIG4_MAXDUTY;
840 i2c_smbus_write_byte_data(client, REG_CONFIG4, data->config4);
841 mutex_unlock(&data->lock);
842
843 return count;
844}
845
3d849981
JD		 846static SENSOR_DEVICE_ATTR_2(in0_input, S_IRUGO, show_voltage, NULL, INPUT, 0);
847static SENSOR_DEVICE_ATTR_2(in0_max, S_IRUGO | S_IWUSR, show_voltage,
848 set_voltage, MAX, 0);
849static SENSOR_DEVICE_ATTR_2(in0_min, S_IRUGO | S_IWUSR, show_voltage,
850 set_voltage, MIN, 0);
851static SENSOR_DEVICE_ATTR_2(in0_alarm, S_IRUGO, show_voltage, NULL, ALARM, 0);
cffb9dd0 852static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_voltage, NULL, INPUT, 1);
1c301fc5 853static SENSOR_DEVICE_ATTR_2(in1_max, S_IRUGO | S_IWUSR, show_voltage,
cffb9dd0 854 set_voltage, MAX, 1);
1c301fc5 855static SENSOR_DEVICE_ATTR_2(in1_min, S_IRUGO | S_IWUSR, show_voltage,
cffb9dd0
JD		 856 set_voltage, MIN, 1);
857static SENSOR_DEVICE_ATTR_2(in1_alarm, S_IRUGO, show_voltage, NULL, ALARM, 1);
858static SENSOR_DEVICE_ATTR_2(in2_input, S_IRUGO, show_voltage, NULL, INPUT, 2);
1c301fc5 859static SENSOR_DEVICE_ATTR_2(in2_max, S_IRUGO | S_IWUSR, show_voltage,
cffb9dd0 860 set_voltage, MAX, 2);
1c301fc5 861static SENSOR_DEVICE_ATTR_2(in2_min, S_IRUGO | S_IWUSR, show_voltage,
cffb9dd0
JD		 862 set_voltage, MIN, 2);
863static SENSOR_DEVICE_ATTR_2(in2_alarm, S_IRUGO, show_voltage, NULL, ALARM, 2);
3d849981
JD		 864static SENSOR_DEVICE_ATTR_2(in3_input, S_IRUGO, show_voltage, NULL, INPUT, 3);
865static SENSOR_DEVICE_ATTR_2(in3_max, S_IRUGO | S_IWUSR, show_voltage,
866 set_voltage, MAX, 3);
867static SENSOR_DEVICE_ATTR_2(in3_min, S_IRUGO | S_IWUSR, show_voltage,
868 set_voltage, MIN, 3);
869static SENSOR_DEVICE_ATTR_2(in3_alarm, S_IRUGO, show_voltage, NULL, ALARM, 3);
870static SENSOR_DEVICE_ATTR_2(in4_input, S_IRUGO, show_voltage, NULL, INPUT, 4);
871static SENSOR_DEVICE_ATTR_2(in4_max, S_IRUGO | S_IWUSR, show_voltage,
872 set_voltage, MAX, 4);
873static SENSOR_DEVICE_ATTR_2(in4_min, S_IRUGO | S_IWUSR, show_voltage,
874 set_voltage, MIN, 4);
875static SENSOR_DEVICE_ATTR_2(in4_alarm, S_IRUGO, show_voltage, NULL, ALARM, 8);
876static SENSOR_DEVICE_ATTR_2(in5_input, S_IRUGO, show_voltage, NULL, INPUT, 5);
877static SENSOR_DEVICE_ATTR_2(in5_max, S_IRUGO | S_IWUSR, show_voltage,
878 set_voltage, MAX, 5);
879static SENSOR_DEVICE_ATTR_2(in5_min, S_IRUGO | S_IWUSR, show_voltage,
880 set_voltage, MIN, 5);
881static SENSOR_DEVICE_ATTR_2(in5_alarm, S_IRUGO, show_voltage, NULL, ALARM, 31);
1c301fc5
JC		 882static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, INPUT, 0);
883static SENSOR_DEVICE_ATTR_2(temp1_alarm, S_IRUGO, show_temp, NULL, ALARM, 0);
884static SENSOR_DEVICE_ATTR_2(temp1_fault, S_IRUGO, show_temp, NULL, FAULT, 0);
885static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
886 MAX, 0);
887static SENSOR_DEVICE_ATTR_2(temp1_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
888 MIN, 0);
889static SENSOR_DEVICE_ATTR_2(temp1_offset, S_IRUGO | S_IWUSR, show_temp,
890 set_temp, OFFSET, 0);
891static SENSOR_DEVICE_ATTR_2(temp1_auto_point1_temp, S_IRUGO | S_IWUSR,
892 show_temp, set_temp, AUTOMIN, 0);
893static SENSOR_DEVICE_ATTR_2(temp1_auto_point2_temp, S_IRUGO | S_IWUSR,
894 show_point2, set_point2, 0, 0);
895static SENSOR_DEVICE_ATTR_2(temp1_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
896 THERM, 0);
897static SENSOR_DEVICE_ATTR_2(temp1_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
898 set_temp, HYSTERSIS, 0);
899static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, INPUT, 1);
900static SENSOR_DEVICE_ATTR_2(temp2_alarm, S_IRUGO, show_temp, NULL, ALARM, 1);
901static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
902 MAX, 1);
903static SENSOR_DEVICE_ATTR_2(temp2_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
904 MIN, 1);
905static SENSOR_DEVICE_ATTR_2(temp2_offset, S_IRUGO | S_IWUSR, show_temp,
906 set_temp, OFFSET, 1);
907static SENSOR_DEVICE_ATTR_2(temp2_auto_point1_temp, S_IRUGO | S_IWUSR,
908 show_temp, set_temp, AUTOMIN, 1);
909static SENSOR_DEVICE_ATTR_2(temp2_auto_point2_temp, S_IRUGO | S_IWUSR,
910 show_point2, set_point2, 0, 1);
911static SENSOR_DEVICE_ATTR_2(temp2_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
912 THERM, 1);
913static SENSOR_DEVICE_ATTR_2(temp2_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
914 set_temp, HYSTERSIS, 1);
915static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, INPUT, 2);
916static SENSOR_DEVICE_ATTR_2(temp3_alarm, S_IRUGO, show_temp, NULL, ALARM, 2);
917static SENSOR_DEVICE_ATTR_2(temp3_fault, S_IRUGO, show_temp, NULL, FAULT, 2);
918static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
919 MAX, 2);
920static SENSOR_DEVICE_ATTR_2(temp3_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
921 MIN, 2);
922static SENSOR_DEVICE_ATTR_2(temp3_offset, S_IRUGO | S_IWUSR, show_temp,
923 set_temp, OFFSET, 2);
924static SENSOR_DEVICE_ATTR_2(temp3_auto_point1_temp, S_IRUGO | S_IWUSR,
925 show_temp, set_temp, AUTOMIN, 2);
926static SENSOR_DEVICE_ATTR_2(temp3_auto_point2_temp, S_IRUGO | S_IWUSR,
927 show_point2, set_point2, 0, 2);
928static SENSOR_DEVICE_ATTR_2(temp3_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
929 THERM, 2);
930static SENSOR_DEVICE_ATTR_2(temp3_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
931 set_temp, HYSTERSIS, 2);
932static SENSOR_DEVICE_ATTR_2(fan1_input, S_IRUGO, show_tach, NULL, INPUT, 0);
933static SENSOR_DEVICE_ATTR_2(fan1_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
934 MIN, 0);
935static SENSOR_DEVICE_ATTR_2(fan1_alarm, S_IRUGO, show_tach, NULL, ALARM, 0);
936static SENSOR_DEVICE_ATTR_2(fan2_input, S_IRUGO, show_tach, NULL, INPUT, 1);
937static SENSOR_DEVICE_ATTR_2(fan2_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
938 MIN, 1);
939static SENSOR_DEVICE_ATTR_2(fan2_alarm, S_IRUGO, show_tach, NULL, ALARM, 1);
940static SENSOR_DEVICE_ATTR_2(fan3_input, S_IRUGO, show_tach, NULL, INPUT, 2);
941static SENSOR_DEVICE_ATTR_2(fan3_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
942 MIN, 2);
943static SENSOR_DEVICE_ATTR_2(fan3_alarm, S_IRUGO, show_tach, NULL, ALARM, 2);
944static SENSOR_DEVICE_ATTR_2(fan4_input, S_IRUGO, show_tach, NULL, INPUT, 3);
945static SENSOR_DEVICE_ATTR_2(fan4_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
946 MIN, 3);
947static SENSOR_DEVICE_ATTR_2(fan4_alarm, S_IRUGO, show_tach, NULL, ALARM, 3);
948static SENSOR_DEVICE_ATTR_2(pwm1, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
949 0);
950static SENSOR_DEVICE_ATTR_2(pwm1_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
951 set_pwmfreq, INPUT, 0);
952static SENSOR_DEVICE_ATTR_2(pwm1_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
953 set_pwmctrl, INPUT, 0);
84d2a314 954static SENSOR_DEVICE_ATTR_2(pwm1_auto_channels_temp, S_IRUGO | S_IWUSR,
1c301fc5
JC		 955 show_pwmchan, set_pwmchan, INPUT, 0);
956static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
957 set_pwm, MIN, 0);
958static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
959 set_pwm, MAX, 0);
960static SENSOR_DEVICE_ATTR_2(pwm2, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
961 1);
962static SENSOR_DEVICE_ATTR_2(pwm2_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
963 set_pwmfreq, INPUT, 1);
964static SENSOR_DEVICE_ATTR_2(pwm2_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
965 set_pwmctrl, INPUT, 1);
84d2a314 966static SENSOR_DEVICE_ATTR_2(pwm2_auto_channels_temp, S_IRUGO | S_IWUSR,
1c301fc5
JC		 967 show_pwmchan, set_pwmchan, INPUT, 1);
968static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
969 set_pwm, MIN, 1);
970static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
971 set_pwm, MAX, 1);
972static SENSOR_DEVICE_ATTR_2(pwm3, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
973 2);
974static SENSOR_DEVICE_ATTR_2(pwm3_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
975 set_pwmfreq, INPUT, 2);
976static SENSOR_DEVICE_ATTR_2(pwm3_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
977 set_pwmctrl, INPUT, 2);
84d2a314 978static SENSOR_DEVICE_ATTR_2(pwm3_auto_channels_temp, S_IRUGO | S_IWUSR,
1c301fc5
JC		 979 show_pwmchan, set_pwmchan, INPUT, 2);
980static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
981 set_pwm, MIN, 2);
982static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
983 set_pwm, MAX, 2);
984
f99318b2
JD		 985/* Non-standard name, might need revisiting */
986static DEVICE_ATTR(pwm_use_point2_pwm_at_crit, S_IWUSR | S_IRUGO,
987 show_pwm_at_crit, set_pwm_at_crit);
988
1c301fc5
JC		 989static struct attribute *adt7475_attrs[] = {
990 &sensor_dev_attr_in1_input.dev_attr.attr,
991 &sensor_dev_attr_in1_max.dev_attr.attr,
992 &sensor_dev_attr_in1_min.dev_attr.attr,
993 &sensor_dev_attr_in1_alarm.dev_attr.attr,
994 &sensor_dev_attr_in2_input.dev_attr.attr,
995 &sensor_dev_attr_in2_max.dev_attr.attr,
996 &sensor_dev_attr_in2_min.dev_attr.attr,
997 &sensor_dev_attr_in2_alarm.dev_attr.attr,
998 &sensor_dev_attr_temp1_input.dev_attr.attr,
999 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1000 &sensor_dev_attr_temp1_fault.dev_attr.attr,
1001 &sensor_dev_attr_temp1_max.dev_attr.attr,
1002 &sensor_dev_attr_temp1_min.dev_attr.attr,
1003 &sensor_dev_attr_temp1_offset.dev_attr.attr,
1004 &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr,
1005 &sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr,
1006 &sensor_dev_attr_temp1_crit.dev_attr.attr,
1007 &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
1008 &sensor_dev_attr_temp2_input.dev_attr.attr,
1009 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1010 &sensor_dev_attr_temp2_max.dev_attr.attr,
1011 &sensor_dev_attr_temp2_min.dev_attr.attr,
1012 &sensor_dev_attr_temp2_offset.dev_attr.attr,
1013 &sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr,
1014 &sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr,
1015 &sensor_dev_attr_temp2_crit.dev_attr.attr,
1016 &sensor_dev_attr_temp2_crit_hyst.dev_attr.attr,
1017 &sensor_dev_attr_temp3_input.dev_attr.attr,
1018 &sensor_dev_attr_temp3_fault.dev_attr.attr,
1019 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1020 &sensor_dev_attr_temp3_max.dev_attr.attr,
1021 &sensor_dev_attr_temp3_min.dev_attr.attr,
1022 &sensor_dev_attr_temp3_offset.dev_attr.attr,
1023 &sensor_dev_attr_temp3_auto_point1_temp.dev_attr.attr,
1024 &sensor_dev_attr_temp3_auto_point2_temp.dev_attr.attr,
1025 &sensor_dev_attr_temp3_crit.dev_attr.attr,
1026 &sensor_dev_attr_temp3_crit_hyst.dev_attr.attr,
1027 &sensor_dev_attr_fan1_input.dev_attr.attr,
1028 &sensor_dev_attr_fan1_min.dev_attr.attr,
1029 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1030 &sensor_dev_attr_fan2_input.dev_attr.attr,
1031 &sensor_dev_attr_fan2_min.dev_attr.attr,
1032 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1033 &sensor_dev_attr_fan3_input.dev_attr.attr,
1034 &sensor_dev_attr_fan3_min.dev_attr.attr,
1035 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1c301fc5
JC		 1036 &sensor_dev_attr_pwm1.dev_attr.attr,
1037 &sensor_dev_attr_pwm1_freq.dev_attr.attr,
1038 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
84d2a314 1039 &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
1c301fc5
JC		 1040 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1041 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1c301fc5
JC		 1042 &sensor_dev_attr_pwm3.dev_attr.attr,
1043 &sensor_dev_attr_pwm3_freq.dev_attr.attr,
1044 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
84d2a314 1045 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
1c301fc5
JC		 1046 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1047 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
f99318b2 1048 &dev_attr_pwm_use_point2_pwm_at_crit.attr,
1c301fc5
JC		 1049 NULL,
1050};
1051
378933c9
JD		 1052static struct attribute *fan4_attrs[] = {
1053 &sensor_dev_attr_fan4_input.dev_attr.attr,
1054 &sensor_dev_attr_fan4_min.dev_attr.attr,
1055 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1056 NULL
1057};
1058
1059static struct attribute *pwm2_attrs[] = {
1060 &sensor_dev_attr_pwm2.dev_attr.attr,
1061 &sensor_dev_attr_pwm2_freq.dev_attr.attr,
1062 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1063 &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
1064 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1065 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1066 NULL
1067};
1068
3d849981 1069/* Attributes specific to the ADT7490 */
378933c9 1070static struct attribute *in0_attrs[] = {
3d849981
JD		 1071 &sensor_dev_attr_in0_input.dev_attr.attr,
1072 &sensor_dev_attr_in0_max.dev_attr.attr,
1073 &sensor_dev_attr_in0_min.dev_attr.attr,
1074 &sensor_dev_attr_in0_alarm.dev_attr.attr,
378933c9
JD		 1075 NULL
1076};
1077
1078static struct attribute *adt7490_attrs[] = {
3d849981
JD		 1079 &sensor_dev_attr_in3_input.dev_attr.attr,
1080 &sensor_dev_attr_in3_max.dev_attr.attr,
1081 &sensor_dev_attr_in3_min.dev_attr.attr,
1082 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1083 &sensor_dev_attr_in4_input.dev_attr.attr,
1084 &sensor_dev_attr_in4_max.dev_attr.attr,
1085 &sensor_dev_attr_in4_min.dev_attr.attr,
1086 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1087 &sensor_dev_attr_in5_input.dev_attr.attr,
1088 &sensor_dev_attr_in5_max.dev_attr.attr,
1089 &sensor_dev_attr_in5_min.dev_attr.attr,
1090 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1091 NULL
1092};
1093
54ecb9e3 1094static struct attribute_group adt7475_attr_group = { .attrs = adt7475_attrs };
378933c9
JD		 1095static struct attribute_group fan4_attr_group = { .attrs = fan4_attrs };
1096static struct attribute_group pwm2_attr_group = { .attrs = pwm2_attrs };
1097static struct attribute_group in0_attr_group = { .attrs = in0_attrs };
3d849981 1098static struct attribute_group adt7490_attr_group = { .attrs = adt7490_attrs };
1c301fc5
JC		 1099
1100static int adt7475_detect(struct i2c_client *client, int kind,
1101 struct i2c_board_info *info)
1102{
1103 struct i2c_adapter *adapter = client->adapter;
d656b6fd 1104 int vendid, devid, devid2;
b180d050 1105 const char *name;
1c301fc5
JC		 1106
1107 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1108 return -ENODEV;
1109
b180d050 1110 vendid = adt7475_read(REG_VENDID);
d656b6fd
JD		 1111 devid2 = adt7475_read(REG_DEVID2);
1112 if (vendid != 0x41 || /* Analog Devices */
1113 (devid2 & 0xf8) != 0x68)
1114 return -ENODEV;
b180d050 1115
d656b6fd
JD		 1116 devid = adt7475_read(REG_DEVID);
1117 if (devid == 0x73)
b180d050 1118 name = "adt7473";
d656b6fd 1119 else if (devid == 0x75 && client->addr == 0x2e)
b180d050 1120 name = "adt7475";
3d849981
JD		 1121 else if ((devid2 & 0xfc) == 0x6c)
1122 name = "adt7490";
b180d050
JD		 1123 else {
1124 dev_dbg(&adapter->dev,
3d849981 1125 "Couldn't detect an ADT7473/75/90 part at "
b180d050 1126 "0x%02x\n", (unsigned int)client->addr);
52df6440 1127 return -ENODEV;
1c301fc5
JC		 1128 }
1129
b180d050 1130 strlcpy(info->type, name, I2C_NAME_SIZE);
1c301fc5
JC		 1131
1132 return 0;
1133}
1134
0f14480b
JD		 1135static void adt7475_remove_files(struct i2c_client *client,
1136 struct adt7475_data *data)
1137{
1138 sysfs_remove_group(&client->dev.kobj, &adt7475_attr_group);
1139 if (data->has_voltage & 0x39)
1140 sysfs_remove_group(&client->dev.kobj, &adt7490_attr_group);
378933c9
JD		 1141 if (data->has_fan4)
1142 sysfs_remove_group(&client->dev.kobj, &fan4_attr_group);
1143 if (data->has_pwm2)
1144 sysfs_remove_group(&client->dev.kobj, &pwm2_attr_group);
1145 if (data->has_voltage & (1 << 0))
1146 sysfs_remove_group(&client->dev.kobj, &in0_attr_group);
0f14480b
JD		 1147}
1148
1c301fc5
JC		 1149static int adt7475_probe(struct i2c_client *client,
1150 const struct i2c_device_id *id)
1151{
1152 struct adt7475_data *data;
378933c9
JD		 1153 int i, ret = 0, revision;
1154 u8 config3;
1c301fc5
JC		 1155
1156 data = kzalloc(sizeof(*data), GFP_KERNEL);
1157 if (data == NULL)
1158 return -ENOMEM;
1159
1160 mutex_init(&data->lock);
1161 i2c_set_clientdata(client, data);
1162
cffb9dd0
JD		 1163 /* Initialize device-specific values */
1164 switch (id->driver_data) {
3d849981 1165 case adt7490:
378933c9
JD		 1166 data->has_voltage = 0x3e; /* in1 to in5 */
1167 revision = adt7475_read(REG_DEVID2) & 0x03;
3d849981 1168 break;
cffb9dd0
JD		 1169 default:
1170 data->has_voltage = 0x06; /* in1, in2 */
378933c9
JD		 1171 revision = adt7475_read(REG_DEVID2) & 0x07;
1172 }
1173
1174 config3 = adt7475_read(REG_CONFIG3);
1175 /* Pin PWM2 may alternatively be used for ALERT output */
1176 if (!(config3 & CONFIG3_SMBALERT))
1177 data->has_pwm2 = 1;
1178 /* Meaning of this bit is inverted for the ADT7473-1 */
1179 if (id->driver_data == adt7473 && revision >= 1)
1180 data->has_pwm2 = !data->has_pwm2;
1181
1182 data->config4 = adt7475_read(REG_CONFIG4);
1183 /* Pin TACH4 may alternatively be used for THERM */
1184 if ((data->config4 & CONFIG4_PINFUNC) == 0x0)
1185 data->has_fan4 = 1;
1186
1187 /* THERM configuration is more complex on the ADT7490, because 2
1188 different pins (TACH4 and +2.5 Vin) can be used for this function */
1189 if (id->driver_data == adt7490) {
1190 if ((data->config4 & CONFIG4_PINFUNC) == 0x1 &&
1191 !(config3 & CONFIG3_THERM))
1192 data->has_fan4 = 1;
1193 if (!(config3 & CONFIG3_THERM) ||
1194 (data->config4 & CONFIG4_PINFUNC) == 0x1)
1195 data->has_voltage |= (1 << 0); /* in0 */
cffb9dd0
JD		 1196 }
1197
1c301fc5
JC		 1198 /* Call adt7475_read_pwm for all pwm's as this will reprogram any
1199 pwm's which are disabled to manual mode with 0% duty cycle */
1200 for (i = 0; i < ADT7475_PWM_COUNT; i++)
1201 adt7475_read_pwm(client, i);
1202
1203 ret = sysfs_create_group(&client->dev.kobj, &adt7475_attr_group);
1204 if (ret)
1205 goto efree;
1206
3d849981
JD		 1207 if (id->driver_data == adt7490) {
1208 ret = sysfs_create_group(&client->dev.kobj,
1209 &adt7490_attr_group);
1210 if (ret)
1211 goto eremove;
1212 }
1213
378933c9
JD		 1214 /* Features that can be disabled individually */
1215 if (data->has_fan4) {
1216 ret = sysfs_create_group(&client->dev.kobj, &fan4_attr_group);
1217 if (ret)
1218 goto eremove;
1219 }
1220 if (data->has_pwm2) {
1221 ret = sysfs_create_group(&client->dev.kobj, &pwm2_attr_group);
1222 if (ret)
1223 goto eremove;
1224 }
1225 if (data->has_voltage & (1 << 0)) {
1226 ret = sysfs_create_group(&client->dev.kobj, &in0_attr_group);
1227 if (ret)
1228 goto eremove;
1229 }
1230
1c301fc5
JC		 1231 data->hwmon_dev = hwmon_device_register(&client->dev);
1232 if (IS_ERR(data->hwmon_dev)) {
1233 ret = PTR_ERR(data->hwmon_dev);
1234 goto eremove;
1235 }
1236
1237 return 0;
1238
1239eremove:
0f14480b 1240 adt7475_remove_files(client, data);
1c301fc5
JC		 1241efree:
1242 kfree(data);
1243 return ret;
1244}
1245
1246static int adt7475_remove(struct i2c_client *client)
1247{
1248 struct adt7475_data *data = i2c_get_clientdata(client);
1249
1250 hwmon_device_unregister(data->hwmon_dev);
0f14480b 1251 adt7475_remove_files(client, data);
1c301fc5
JC		 1252 kfree(data);
1253
1254 return 0;
1255}
1256
1257static struct i2c_driver adt7475_driver = {
1258 .class = I2C_CLASS_HWMON,
1259 .driver = {
1260 .name = "adt7475",
1261 },
1262 .probe = adt7475_probe,
1263 .remove = adt7475_remove,
1264 .id_table = adt7475_id,
1265 .detect = adt7475_detect,
1266 .address_data = &addr_data,
1267};
1268
1269static void adt7475_read_hystersis(struct i2c_client *client)
1270{
1271 struct adt7475_data *data = i2c_get_clientdata(client);
1272
1273 data->temp[HYSTERSIS][0] = (u16) adt7475_read(REG_REMOTE1_HYSTERSIS);
1274 data->temp[HYSTERSIS][1] = data->temp[HYSTERSIS][0];
1275 data->temp[HYSTERSIS][2] = (u16) adt7475_read(REG_REMOTE2_HYSTERSIS);
1276}
1277
1278static void adt7475_read_pwm(struct i2c_client *client, int index)
1279{
1280 struct adt7475_data *data = i2c_get_clientdata(client);
1281 unsigned int v;
1282
1283 data->pwm[CONTROL][index] = adt7475_read(PWM_CONFIG_REG(index));
1284
1285 /* Figure out the internal value for pwmctrl and pwmchan
1286 based on the current settings */
1287 v = (data->pwm[CONTROL][index] >> 5) & 7;
1288
1289 if (v == 3)
1290 data->pwmctl[index] = 0;
1291 else if (v == 7)
1292 data->pwmctl[index] = 1;
1293 else if (v == 4) {
1294 /* The fan is disabled - we don't want to
1295 support that, so change to manual mode and
1296 set the duty cycle to 0 instead
1297 */
1298 data->pwm[INPUT][index] = 0;
1299 data->pwm[CONTROL][index] &= ~0xE0;
1300 data->pwm[CONTROL][index] |= (7 << 5);
1301
1302 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
1303 data->pwm[INPUT][index]);
1304
1305 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
1306 data->pwm[CONTROL][index]);
1307
1308 data->pwmctl[index] = 1;
1309 } else {
1310 data->pwmctl[index] = 2;
1311
1312 switch (v) {
1313 case 0:
1314 data->pwmchan[index] = 1;
1315 break;
1316 case 1:
1317 data->pwmchan[index] = 2;
1318 break;
1319 case 2:
1320 data->pwmchan[index] = 4;
1321 break;
1322 case 5:
1323 data->pwmchan[index] = 6;
1324 break;
1325 case 6:
1326 data->pwmchan[index] = 7;
1327 break;
1328 }
1329 }
1330}
1331
1332static struct adt7475_data *adt7475_update_device(struct device *dev)
1333{
1334 struct i2c_client *client = to_i2c_client(dev);
1335 struct adt7475_data *data = i2c_get_clientdata(client);
3d849981 1336 u16 ext;
1c301fc5
JC		 1337 int i;
1338
1339 mutex_lock(&data->lock);
1340
1341 /* Measurement values update every 2 seconds */
1342 if (time_after(jiffies, data->measure_updated + HZ * 2) ||
1343 !data->valid) {
1344 data->alarms = adt7475_read(REG_STATUS2) << 8;
1345 data->alarms |= adt7475_read(REG_STATUS1);
1346
3d849981
JD		 1347 ext = (adt7475_read(REG_EXTEND2) << 8) |
1348 adt7475_read(REG_EXTEND1);
cffb9dd0
JD		 1349 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
1350 if (!(data->has_voltage & (1 << i)))
1351 continue;
1c301fc5
JC		 1352 data->voltage[INPUT][i] =
1353 (adt7475_read(VOLTAGE_REG(i)) << 2) |
cffb9dd0
JD		 1354 ((ext >> (i * 2)) & 3);
1355 }
1c301fc5 1356
1c301fc5
JC		 1357 for (i = 0; i < ADT7475_TEMP_COUNT; i++)
1358 data->temp[INPUT][i] =
1359 (adt7475_read(TEMP_REG(i)) << 2) |
3d849981
JD		 1360 ((ext >> ((i + 5) * 2)) & 3);
1361
1362 if (data->has_voltage & (1 << 5)) {
1363 data->alarms |= adt7475_read(REG_STATUS4) << 24;
1364 ext = adt7475_read(REG_EXTEND3);
1365 data->voltage[INPUT][5] = adt7475_read(REG_VTT) << 2 |
1366 ((ext >> 4) & 3);
1367 }
1c301fc5 1368
378933c9
JD		 1369 for (i = 0; i < ADT7475_TACH_COUNT; i++) {
1370 if (i == 3 && !data->has_fan4)
1371 continue;
1c301fc5
JC		 1372 data->tach[INPUT][i] =
1373 adt7475_read_word(client, TACH_REG(i));
378933c9 1374 }
1c301fc5
JC		 1375
1376 /* Updated by hw when in auto mode */
378933c9
JD		 1377 for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1378 if (i == 1 && !data->has_pwm2)
1379 continue;
1c301fc5 1380 data->pwm[INPUT][i] = adt7475_read(PWM_REG(i));
378933c9 1381 }
1c301fc5
JC		 1382
1383 data->measure_updated = jiffies;
1384 }
1385
1386 /* Limits and settings, should never change update every 60 seconds */
56e35eee 1387 if (time_after(jiffies, data->limits_updated + HZ * 60) ||
1c301fc5 1388 !data->valid) {
f99318b2 1389 data->config4 = adt7475_read(REG_CONFIG4);
1c301fc5
JC		 1390 data->config5 = adt7475_read(REG_CONFIG5);
1391
1392 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
cffb9dd0
JD		 1393 if (!(data->has_voltage & (1 << i)))
1394 continue;
1c301fc5
JC		 1395 /* Adjust values so they match the input precision */
1396 data->voltage[MIN][i] =
1397 adt7475_read(VOLTAGE_MIN_REG(i)) << 2;
1398 data->voltage[MAX][i] =
1399 adt7475_read(VOLTAGE_MAX_REG(i)) << 2;
1400 }
1401
3d849981
JD		 1402 if (data->has_voltage & (1 << 5)) {
1403 data->voltage[MIN][5] = adt7475_read(REG_VTT_MIN) << 2;
1404 data->voltage[MAX][5] = adt7475_read(REG_VTT_MAX) << 2;
1405 }
1406
1c301fc5
JC		 1407 for (i = 0; i < ADT7475_TEMP_COUNT; i++) {
1408 /* Adjust values so they match the input precision */
1409 data->temp[MIN][i] =
1410 adt7475_read(TEMP_MIN_REG(i)) << 2;
1411 data->temp[MAX][i] =
1412 adt7475_read(TEMP_MAX_REG(i)) << 2;
1413 data->temp[AUTOMIN][i] =
1414 adt7475_read(TEMP_TMIN_REG(i)) << 2;
1415 data->temp[THERM][i] =
1416 adt7475_read(TEMP_THERM_REG(i)) << 2;
1417 data->temp[OFFSET][i] =
1418 adt7475_read(TEMP_OFFSET_REG(i));
1419 }
1420 adt7475_read_hystersis(client);
1421
378933c9
JD		 1422 for (i = 0; i < ADT7475_TACH_COUNT; i++) {
1423 if (i == 3 && !data->has_fan4)
1424 continue;
1c301fc5
JC		 1425 data->tach[MIN][i] =
1426 adt7475_read_word(client, TACH_MIN_REG(i));
378933c9 1427 }
1c301fc5
JC		 1428
1429 for (i = 0; i < ADT7475_PWM_COUNT; i++) {
378933c9
JD		 1430 if (i == 1 && !data->has_pwm2)
1431 continue;
1c301fc5
JC		 1432 data->pwm[MAX][i] = adt7475_read(PWM_MAX_REG(i));
1433 data->pwm[MIN][i] = adt7475_read(PWM_MIN_REG(i));
1434 /* Set the channel and control information */
1435 adt7475_read_pwm(client, i);
1436 }
1437
1438 data->range[0] = adt7475_read(TEMP_TRANGE_REG(0));
1439 data->range[1] = adt7475_read(TEMP_TRANGE_REG(1));
1440 data->range[2] = adt7475_read(TEMP_TRANGE_REG(2));
1441
1442 data->limits_updated = jiffies;
1443 data->valid = 1;
1444 }
1445
1446 mutex_unlock(&data->lock);
1447
1448 return data;
1449}
1450
1451static int __init sensors_adt7475_init(void)
1452{
1453 return i2c_add_driver(&adt7475_driver);
1454}
1455
1456static void __exit sensors_adt7475_exit(void)
1457{
1458 i2c_del_driver(&adt7475_driver);
1459}
1460
1461MODULE_AUTHOR("Advanced Micro Devices, Inc");
1462MODULE_DESCRIPTION("adt7475 driver");
1463MODULE_LICENSE("GPL");
1464
1465module_init(sensors_adt7475_init);
1466module_exit(sensors_adt7475_exit);
Linux 6.x block layer and io_uring tree(s)