Loading...
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 * Copyright (C) 2009 Jean Delvare <khali@linux-fr.org>
7 *
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/hwmon-vid.h>
22#include <linux/err.h>
23
24/* Indexes for the sysfs hooks */
25
26#define INPUT 0
27#define MIN 1
28#define MAX 2
29#define CONTROL 3
30#define OFFSET 3
31#define AUTOMIN 4
32#define THERM 5
33#define HYSTERSIS 6
34
35/* These are unique identifiers for the sysfs functions - unlike the
36 numbers above, these are not also indexes into an array
37*/
38
39#define ALARM 9
40#define FAULT 10
41
42/* 7475 Common Registers */
43
44#define REG_DEVREV2 0x12 /* ADT7490 only */
45
46#define REG_VTT 0x1E /* ADT7490 only */
47#define REG_EXTEND3 0x1F /* ADT7490 only */
48
49#define REG_VOLTAGE_BASE 0x20
50#define REG_TEMP_BASE 0x25
51#define REG_TACH_BASE 0x28
52#define REG_PWM_BASE 0x30
53#define REG_PWM_MAX_BASE 0x38
54
55#define REG_DEVID 0x3D
56#define REG_VENDID 0x3E
57#define REG_DEVID2 0x3F
58
59#define REG_STATUS1 0x41
60#define REG_STATUS2 0x42
61
62#define REG_VID 0x43 /* ADT7476 only */
63
64#define REG_VOLTAGE_MIN_BASE 0x44
65#define REG_VOLTAGE_MAX_BASE 0x45
66
67#define REG_TEMP_MIN_BASE 0x4E
68#define REG_TEMP_MAX_BASE 0x4F
69
70#define REG_TACH_MIN_BASE 0x54
71
72#define REG_PWM_CONFIG_BASE 0x5C
73
74#define REG_TEMP_TRANGE_BASE 0x5F
75
76#define REG_PWM_MIN_BASE 0x64
77
78#define REG_TEMP_TMIN_BASE 0x67
79#define REG_TEMP_THERM_BASE 0x6A
80
81#define REG_REMOTE1_HYSTERSIS 0x6D
82#define REG_REMOTE2_HYSTERSIS 0x6E
83
84#define REG_TEMP_OFFSET_BASE 0x70
85
86#define REG_CONFIG2 0x73
87
88#define REG_EXTEND1 0x76
89#define REG_EXTEND2 0x77
90
91#define REG_CONFIG3 0x78
92#define REG_CONFIG5 0x7C
93#define REG_CONFIG4 0x7D
94
95#define REG_STATUS4 0x81 /* ADT7490 only */
96
97#define REG_VTT_MIN 0x84 /* ADT7490 only */
98#define REG_VTT_MAX 0x86 /* ADT7490 only */
99
100#define VID_VIDSEL 0x80 /* ADT7476 only */
101
102#define CONFIG2_ATTN 0x20
103
104#define CONFIG3_SMBALERT 0x01
105#define CONFIG3_THERM 0x02
106
107#define CONFIG4_PINFUNC 0x03
108#define CONFIG4_MAXDUTY 0x08
109#define CONFIG4_ATTN_IN10 0x30
110#define CONFIG4_ATTN_IN43 0xC0
111
112#define CONFIG5_TWOSCOMP 0x01
113#define CONFIG5_TEMPOFFSET 0x02
114#define CONFIG5_VIDGPIO 0x10 /* ADT7476 only */
115
116/* ADT7475 Settings */
117
118#define ADT7475_VOLTAGE_COUNT 5 /* Not counting Vtt */
119#define ADT7475_TEMP_COUNT 3
120#define ADT7475_TACH_COUNT 4
121#define ADT7475_PWM_COUNT 3
122
123/* Macro to read the registers */
124
125#define adt7475_read(reg) i2c_smbus_read_byte_data(client, (reg))
126
127/* Macros to easily index the registers */
128
129#define TACH_REG(idx) (REG_TACH_BASE + ((idx) * 2))
130#define TACH_MIN_REG(idx) (REG_TACH_MIN_BASE + ((idx) * 2))
131
132#define PWM_REG(idx) (REG_PWM_BASE + (idx))
133#define PWM_MAX_REG(idx) (REG_PWM_MAX_BASE + (idx))
134#define PWM_MIN_REG(idx) (REG_PWM_MIN_BASE + (idx))
135#define PWM_CONFIG_REG(idx) (REG_PWM_CONFIG_BASE + (idx))
136
137#define VOLTAGE_REG(idx) (REG_VOLTAGE_BASE + (idx))
138#define VOLTAGE_MIN_REG(idx) (REG_VOLTAGE_MIN_BASE + ((idx) * 2))
139#define VOLTAGE_MAX_REG(idx) (REG_VOLTAGE_MAX_BASE + ((idx) * 2))
140
141#define TEMP_REG(idx) (REG_TEMP_BASE + (idx))
142#define TEMP_MIN_REG(idx) (REG_TEMP_MIN_BASE + ((idx) * 2))
143#define TEMP_MAX_REG(idx) (REG_TEMP_MAX_BASE + ((idx) * 2))
144#define TEMP_TMIN_REG(idx) (REG_TEMP_TMIN_BASE + (idx))
145#define TEMP_THERM_REG(idx) (REG_TEMP_THERM_BASE + (idx))
146#define TEMP_OFFSET_REG(idx) (REG_TEMP_OFFSET_BASE + (idx))
147#define TEMP_TRANGE_REG(idx) (REG_TEMP_TRANGE_BASE + (idx))
148
149static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
150
151enum chips { adt7473, adt7475, adt7476, adt7490 };
152
153static const struct i2c_device_id adt7475_id[] = {
154 { "adt7473", adt7473 },
155 { "adt7475", adt7475 },
156 { "adt7476", adt7476 },
157 { "adt7490", adt7490 },
158 { }
159};
160MODULE_DEVICE_TABLE(i2c, adt7475_id);
161
162struct adt7475_data {
163 struct device *hwmon_dev;
164 struct mutex lock;
165
166 unsigned long measure_updated;
167 unsigned long limits_updated;
168 char valid;
169
170 u8 config4;
171 u8 config5;
172 u8 has_voltage;
173 u8 bypass_attn; /* Bypass voltage attenuator */
174 u8 has_pwm2:1;
175 u8 has_fan4:1;
176 u8 has_vid:1;
177 u32 alarms;
178 u16 voltage[3][6];
179 u16 temp[7][3];
180 u16 tach[2][4];
181 u8 pwm[4][3];
182 u8 range[3];
183 u8 pwmctl[3];
184 u8 pwmchan[3];
185
186 u8 vid;
187 u8 vrm;
188};
189
190static struct i2c_driver adt7475_driver;
191static struct adt7475_data *adt7475_update_device(struct device *dev);
192static void adt7475_read_hystersis(struct i2c_client *client);
193static void adt7475_read_pwm(struct i2c_client *client, int index);
194
195/* Given a temp value, convert it to register value */
196
197static inline u16 temp2reg(struct adt7475_data *data, long val)
198{
199 u16 ret;
200
201 if (!(data->config5 & CONFIG5_TWOSCOMP)) {
202 val = SENSORS_LIMIT(val, -64000, 191000);
203 ret = (val + 64500) / 1000;
204 } else {
205 val = SENSORS_LIMIT(val, -128000, 127000);
206 if (val < -500)
207 ret = (256500 + val) / 1000;
208 else
209 ret = (val + 500) / 1000;
210 }
211
212 return ret << 2;
213}
214
215/* Given a register value, convert it to a real temp value */
216
217static inline int reg2temp(struct adt7475_data *data, u16 reg)
218{
219 if (data->config5 & CONFIG5_TWOSCOMP) {
220 if (reg >= 512)
221 return (reg - 1024) * 250;
222 else
223 return reg * 250;
224 } else
225 return (reg - 256) * 250;
226}
227
228static inline int tach2rpm(u16 tach)
229{
230 if (tach == 0 || tach == 0xFFFF)
231 return 0;
232
233 return (90000 * 60) / tach;
234}
235
236static inline u16 rpm2tach(unsigned long rpm)
237{
238 if (rpm == 0)
239 return 0;
240
241 return SENSORS_LIMIT((90000 * 60) / rpm, 1, 0xFFFF);
242}
243
244/* Scaling factors for voltage inputs, taken from the ADT7490 datasheet */
245static const int adt7473_in_scaling[ADT7475_VOLTAGE_COUNT + 1][2] = {
246 { 45, 94 }, /* +2.5V */
247 { 175, 525 }, /* Vccp */
248 { 68, 71 }, /* Vcc */
249 { 93, 47 }, /* +5V */
250 { 120, 20 }, /* +12V */
251 { 45, 45 }, /* Vtt */
252};
253
254static inline int reg2volt(int channel, u16 reg, u8 bypass_attn)
255{
256 const int *r = adt7473_in_scaling[channel];
257
258 if (bypass_attn & (1 << channel))
259 return DIV_ROUND_CLOSEST(reg * 2250, 1024);
260 return DIV_ROUND_CLOSEST(reg * (r[0] + r[1]) * 2250, r[1] * 1024);
261}
262
263static inline u16 volt2reg(int channel, long volt, u8 bypass_attn)
264{
265 const int *r = adt7473_in_scaling[channel];
266 long reg;
267
268 if (bypass_attn & (1 << channel))
269 reg = (volt * 1024) / 2250;
270 else
271 reg = (volt * r[1] * 1024) / ((r[0] + r[1]) * 2250);
272 return SENSORS_LIMIT(reg, 0, 1023) & (0xff << 2);
273}
274
275static u16 adt7475_read_word(struct i2c_client *client, int reg)
276{
277 u16 val;
278
279 val = i2c_smbus_read_byte_data(client, reg);
280 val |= (i2c_smbus_read_byte_data(client, reg + 1) << 8);
281
282 return val;
283}
284
285static void adt7475_write_word(struct i2c_client *client, int reg, u16 val)
286{
287 i2c_smbus_write_byte_data(client, reg + 1, val >> 8);
288 i2c_smbus_write_byte_data(client, reg, val & 0xFF);
289}
290
291/* Find the nearest value in a table - used for pwm frequency and
292 auto temp range */
293static int find_nearest(long val, const int *array, int size)
294{
295 int i;
296
297 if (val < array[0])
298 return 0;
299
300 if (val > array[size - 1])
301 return size - 1;
302
303 for (i = 0; i < size - 1; i++) {
304 int a, b;
305
306 if (val > array[i + 1])
307 continue;
308
309 a = val - array[i];
310 b = array[i + 1] - val;
311
312 return (a <= b) ? i : i + 1;
313 }
314
315 return 0;
316}
317
318static ssize_t show_voltage(struct device *dev, struct device_attribute *attr,
319 char *buf)
320{
321 struct adt7475_data *data = adt7475_update_device(dev);
322 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
323 unsigned short val;
324
325 switch (sattr->nr) {
326 case ALARM:
327 return sprintf(buf, "%d\n",
328 (data->alarms >> sattr->index) & 1);
329 default:
330 val = data->voltage[sattr->nr][sattr->index];
331 return sprintf(buf, "%d\n",
332 reg2volt(sattr->index, val, data->bypass_attn));
333 }
334}
335
336static ssize_t set_voltage(struct device *dev, struct device_attribute *attr,
337 const char *buf, size_t count)
338{
339
340 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
341 struct i2c_client *client = to_i2c_client(dev);
342 struct adt7475_data *data = i2c_get_clientdata(client);
343 unsigned char reg;
344 long val;
345
346 if (strict_strtol(buf, 10, &val))
347 return -EINVAL;
348
349 mutex_lock(&data->lock);
350
351 data->voltage[sattr->nr][sattr->index] =
352 volt2reg(sattr->index, val, data->bypass_attn);
353
354 if (sattr->index < ADT7475_VOLTAGE_COUNT) {
355 if (sattr->nr == MIN)
356 reg = VOLTAGE_MIN_REG(sattr->index);
357 else
358 reg = VOLTAGE_MAX_REG(sattr->index);
359 } else {
360 if (sattr->nr == MIN)
361 reg = REG_VTT_MIN;
362 else
363 reg = REG_VTT_MAX;
364 }
365
366 i2c_smbus_write_byte_data(client, reg,
367 data->voltage[sattr->nr][sattr->index] >> 2);
368 mutex_unlock(&data->lock);
369
370 return count;
371}
372
373static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
374 char *buf)
375{
376 struct adt7475_data *data = adt7475_update_device(dev);
377 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
378 int out;
379
380 switch (sattr->nr) {
381 case HYSTERSIS:
382 mutex_lock(&data->lock);
383 out = data->temp[sattr->nr][sattr->index];
384 if (sattr->index != 1)
385 out = (out >> 4) & 0xF;
386 else
387 out = (out & 0xF);
388 /* Show the value as an absolute number tied to
389 * THERM */
390 out = reg2temp(data, data->temp[THERM][sattr->index]) -
391 out * 1000;
392 mutex_unlock(&data->lock);
393 break;
394
395 case OFFSET:
396 /* Offset is always 2's complement, regardless of the
397 * setting in CONFIG5 */
398 mutex_lock(&data->lock);
399 out = (s8)data->temp[sattr->nr][sattr->index];
400 if (data->config5 & CONFIG5_TEMPOFFSET)
401 out *= 1000;
402 else
403 out *= 500;
404 mutex_unlock(&data->lock);
405 break;
406
407 case ALARM:
408 out = (data->alarms >> (sattr->index + 4)) & 1;
409 break;
410
411 case FAULT:
412 /* Note - only for remote1 and remote2 */
413 out = !!(data->alarms & (sattr->index ? 0x8000 : 0x4000));
414 break;
415
416 default:
417 /* All other temp values are in the configured format */
418 out = reg2temp(data, data->temp[sattr->nr][sattr->index]);
419 }
420
421 return sprintf(buf, "%d\n", out);
422}
423
424static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
425 const char *buf, size_t count)
426{
427 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
428 struct i2c_client *client = to_i2c_client(dev);
429 struct adt7475_data *data = i2c_get_clientdata(client);
430 unsigned char reg = 0;
431 u8 out;
432 int temp;
433 long val;
434
435 if (strict_strtol(buf, 10, &val))
436 return -EINVAL;
437
438 mutex_lock(&data->lock);
439
440 /* We need the config register in all cases for temp <-> reg conv. */
441 data->config5 = adt7475_read(REG_CONFIG5);
442
443 switch (sattr->nr) {
444 case OFFSET:
445 if (data->config5 & CONFIG5_TEMPOFFSET) {
446 val = SENSORS_LIMIT(val, -63000, 127000);
447 out = data->temp[OFFSET][sattr->index] = val / 1000;
448 } else {
449 val = SENSORS_LIMIT(val, -63000, 64000);
450 out = data->temp[OFFSET][sattr->index] = val / 500;
451 }
452 break;
453
454 case HYSTERSIS:
455 /* The value will be given as an absolute value, turn it
456 into an offset based on THERM */
457
458 /* Read fresh THERM and HYSTERSIS values from the chip */
459 data->temp[THERM][sattr->index] =
460 adt7475_read(TEMP_THERM_REG(sattr->index)) << 2;
461 adt7475_read_hystersis(client);
462
463 temp = reg2temp(data, data->temp[THERM][sattr->index]);
464 val = SENSORS_LIMIT(val, temp - 15000, temp);
465 val = (temp - val) / 1000;
466
467 if (sattr->index != 1) {
468 data->temp[HYSTERSIS][sattr->index] &= 0xF0;
469 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF) << 4;
470 } else {
471 data->temp[HYSTERSIS][sattr->index] &= 0x0F;
472 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF);
473 }
474
475 out = data->temp[HYSTERSIS][sattr->index];
476 break;
477
478 default:
479 data->temp[sattr->nr][sattr->index] = temp2reg(data, val);
480
481 /* We maintain an extra 2 digits of precision for simplicity
482 * - shift those back off before writing the value */
483 out = (u8) (data->temp[sattr->nr][sattr->index] >> 2);
484 }
485
486 switch (sattr->nr) {
487 case MIN:
488 reg = TEMP_MIN_REG(sattr->index);
489 break;
490 case MAX:
491 reg = TEMP_MAX_REG(sattr->index);
492 break;
493 case OFFSET:
494 reg = TEMP_OFFSET_REG(sattr->index);
495 break;
496 case AUTOMIN:
497 reg = TEMP_TMIN_REG(sattr->index);
498 break;
499 case THERM:
500 reg = TEMP_THERM_REG(sattr->index);
501 break;
502 case HYSTERSIS:
503 if (sattr->index != 2)
504 reg = REG_REMOTE1_HYSTERSIS;
505 else
506 reg = REG_REMOTE2_HYSTERSIS;
507
508 break;
509 }
510
511 i2c_smbus_write_byte_data(client, reg, out);
512
513 mutex_unlock(&data->lock);
514 return count;
515}
516
517/* Table of autorange values - the user will write the value in millidegrees,
518 and we'll convert it */
519static const int autorange_table[] = {
520 2000, 2500, 3330, 4000, 5000, 6670, 8000,
521 10000, 13330, 16000, 20000, 26670, 32000, 40000,
522 53330, 80000
523};
524
525static ssize_t show_point2(struct device *dev, struct device_attribute *attr,
526 char *buf)
527{
528 struct adt7475_data *data = adt7475_update_device(dev);
529 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
530 int out, val;
531
532 mutex_lock(&data->lock);
533 out = (data->range[sattr->index] >> 4) & 0x0F;
534 val = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
535 mutex_unlock(&data->lock);
536
537 return sprintf(buf, "%d\n", val + autorange_table[out]);
538}
539
540static ssize_t set_point2(struct device *dev, struct device_attribute *attr,
541 const char *buf, size_t count)
542{
543 struct i2c_client *client = to_i2c_client(dev);
544 struct adt7475_data *data = i2c_get_clientdata(client);
545 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
546 int temp;
547 long val;
548
549 if (strict_strtol(buf, 10, &val))
550 return -EINVAL;
551
552 mutex_lock(&data->lock);
553
554 /* Get a fresh copy of the needed registers */
555 data->config5 = adt7475_read(REG_CONFIG5);
556 data->temp[AUTOMIN][sattr->index] =
557 adt7475_read(TEMP_TMIN_REG(sattr->index)) << 2;
558 data->range[sattr->index] =
559 adt7475_read(TEMP_TRANGE_REG(sattr->index));
560
561 /* The user will write an absolute value, so subtract the start point
562 to figure the range */
563 temp = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
564 val = SENSORS_LIMIT(val, temp + autorange_table[0],
565 temp + autorange_table[ARRAY_SIZE(autorange_table) - 1]);
566 val -= temp;
567
568 /* Find the nearest table entry to what the user wrote */
569 val = find_nearest(val, autorange_table, ARRAY_SIZE(autorange_table));
570
571 data->range[sattr->index] &= ~0xF0;
572 data->range[sattr->index] |= val << 4;
573
574 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
575 data->range[sattr->index]);
576
577 mutex_unlock(&data->lock);
578 return count;
579}
580
581static ssize_t show_tach(struct device *dev, struct device_attribute *attr,
582 char *buf)
583{
584 struct adt7475_data *data = adt7475_update_device(dev);
585 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
586 int out;
587
588 if (sattr->nr == ALARM)
589 out = (data->alarms >> (sattr->index + 10)) & 1;
590 else
591 out = tach2rpm(data->tach[sattr->nr][sattr->index]);
592
593 return sprintf(buf, "%d\n", out);
594}
595
596static ssize_t set_tach(struct device *dev, struct device_attribute *attr,
597 const char *buf, size_t count)
598{
599
600 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
601 struct i2c_client *client = to_i2c_client(dev);
602 struct adt7475_data *data = i2c_get_clientdata(client);
603 unsigned long val;
604
605 if (strict_strtoul(buf, 10, &val))
606 return -EINVAL;
607
608 mutex_lock(&data->lock);
609
610 data->tach[MIN][sattr->index] = rpm2tach(val);
611
612 adt7475_write_word(client, TACH_MIN_REG(sattr->index),
613 data->tach[MIN][sattr->index]);
614
615 mutex_unlock(&data->lock);
616 return count;
617}
618
619static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
620 char *buf)
621{
622 struct adt7475_data *data = adt7475_update_device(dev);
623 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
624
625 return sprintf(buf, "%d\n", data->pwm[sattr->nr][sattr->index]);
626}
627
628static ssize_t show_pwmchan(struct device *dev, struct device_attribute *attr,
629 char *buf)
630{
631 struct adt7475_data *data = adt7475_update_device(dev);
632 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
633
634 return sprintf(buf, "%d\n", data->pwmchan[sattr->index]);
635}
636
637static ssize_t show_pwmctrl(struct device *dev, struct device_attribute *attr,
638 char *buf)
639{
640 struct adt7475_data *data = adt7475_update_device(dev);
641 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
642
643 return sprintf(buf, "%d\n", data->pwmctl[sattr->index]);
644}
645
646static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
647 const char *buf, size_t count)
648{
649
650 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
651 struct i2c_client *client = to_i2c_client(dev);
652 struct adt7475_data *data = i2c_get_clientdata(client);
653 unsigned char reg = 0;
654 long val;
655
656 if (strict_strtol(buf, 10, &val))
657 return -EINVAL;
658
659 mutex_lock(&data->lock);
660
661 switch (sattr->nr) {
662 case INPUT:
663 /* Get a fresh value for CONTROL */
664 data->pwm[CONTROL][sattr->index] =
665 adt7475_read(PWM_CONFIG_REG(sattr->index));
666
667 /* If we are not in manual mode, then we shouldn't allow
668 * the user to set the pwm speed */
669 if (((data->pwm[CONTROL][sattr->index] >> 5) & 7) != 7) {
670 mutex_unlock(&data->lock);
671 return count;
672 }
673
674 reg = PWM_REG(sattr->index);
675 break;
676
677 case MIN:
678 reg = PWM_MIN_REG(sattr->index);
679 break;
680
681 case MAX:
682 reg = PWM_MAX_REG(sattr->index);
683 break;
684 }
685
686 data->pwm[sattr->nr][sattr->index] = SENSORS_LIMIT(val, 0, 0xFF);
687 i2c_smbus_write_byte_data(client, reg,
688 data->pwm[sattr->nr][sattr->index]);
689
690 mutex_unlock(&data->lock);
691
692 return count;
693}
694
695/* Called by set_pwmctrl and set_pwmchan */
696
697static int hw_set_pwm(struct i2c_client *client, int index,
698 unsigned int pwmctl, unsigned int pwmchan)
699{
700 struct adt7475_data *data = i2c_get_clientdata(client);
701 long val = 0;
702
703 switch (pwmctl) {
704 case 0:
705 val = 0x03; /* Run at full speed */
706 break;
707 case 1:
708 val = 0x07; /* Manual mode */
709 break;
710 case 2:
711 switch (pwmchan) {
712 case 1:
713 /* Remote1 controls PWM */
714 val = 0x00;
715 break;
716 case 2:
717 /* local controls PWM */
718 val = 0x01;
719 break;
720 case 4:
721 /* remote2 controls PWM */
722 val = 0x02;
723 break;
724 case 6:
725 /* local/remote2 control PWM */
726 val = 0x05;
727 break;
728 case 7:
729 /* All three control PWM */
730 val = 0x06;
731 break;
732 default:
733 return -EINVAL;
734 }
735 break;
736 default:
737 return -EINVAL;
738 }
739
740 data->pwmctl[index] = pwmctl;
741 data->pwmchan[index] = pwmchan;
742
743 data->pwm[CONTROL][index] &= ~0xE0;
744 data->pwm[CONTROL][index] |= (val & 7) << 5;
745
746 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
747 data->pwm[CONTROL][index]);
748
749 return 0;
750}
751
752static ssize_t set_pwmchan(struct device *dev, struct device_attribute *attr,
753 const char *buf, size_t count)
754{
755 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
756 struct i2c_client *client = to_i2c_client(dev);
757 struct adt7475_data *data = i2c_get_clientdata(client);
758 int r;
759 long val;
760
761 if (strict_strtol(buf, 10, &val))
762 return -EINVAL;
763
764 mutex_lock(&data->lock);
765 /* Read Modify Write PWM values */
766 adt7475_read_pwm(client, sattr->index);
767 r = hw_set_pwm(client, sattr->index, data->pwmctl[sattr->index], val);
768 if (r)
769 count = r;
770 mutex_unlock(&data->lock);
771
772 return count;
773}
774
775static ssize_t set_pwmctrl(struct device *dev, struct device_attribute *attr,
776 const char *buf, size_t count)
777{
778 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
779 struct i2c_client *client = to_i2c_client(dev);
780 struct adt7475_data *data = i2c_get_clientdata(client);
781 int r;
782 long val;
783
784 if (strict_strtol(buf, 10, &val))
785 return -EINVAL;
786
787 mutex_lock(&data->lock);
788 /* Read Modify Write PWM values */
789 adt7475_read_pwm(client, sattr->index);
790 r = hw_set_pwm(client, sattr->index, val, data->pwmchan[sattr->index]);
791 if (r)
792 count = r;
793 mutex_unlock(&data->lock);
794
795 return count;
796}
797
798/* List of frequencies for the PWM */
799static const int pwmfreq_table[] = {
800 11, 14, 22, 29, 35, 44, 58, 88
801};
802
803static ssize_t show_pwmfreq(struct device *dev, struct device_attribute *attr,
804 char *buf)
805{
806 struct adt7475_data *data = adt7475_update_device(dev);
807 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
808
809 return sprintf(buf, "%d\n",
810 pwmfreq_table[data->range[sattr->index] & 7]);
811}
812
813static ssize_t set_pwmfreq(struct device *dev, struct device_attribute *attr,
814 const char *buf, size_t count)
815{
816 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
817 struct i2c_client *client = to_i2c_client(dev);
818 struct adt7475_data *data = i2c_get_clientdata(client);
819 int out;
820 long val;
821
822 if (strict_strtol(buf, 10, &val))
823 return -EINVAL;
824
825 out = find_nearest(val, pwmfreq_table, ARRAY_SIZE(pwmfreq_table));
826
827 mutex_lock(&data->lock);
828
829 data->range[sattr->index] =
830 adt7475_read(TEMP_TRANGE_REG(sattr->index));
831 data->range[sattr->index] &= ~7;
832 data->range[sattr->index] |= out;
833
834 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
835 data->range[sattr->index]);
836
837 mutex_unlock(&data->lock);
838 return count;
839}
840
841static ssize_t show_pwm_at_crit(struct device *dev,
842 struct device_attribute *devattr, char *buf)
843{
844 struct adt7475_data *data = adt7475_update_device(dev);
845 return sprintf(buf, "%d\n", !!(data->config4 & CONFIG4_MAXDUTY));
846}
847
848static ssize_t set_pwm_at_crit(struct device *dev,
849 struct device_attribute *devattr,
850 const char *buf, size_t count)
851{
852 struct i2c_client *client = to_i2c_client(dev);
853 struct adt7475_data *data = i2c_get_clientdata(client);
854 long val;
855
856 if (strict_strtol(buf, 10, &val))
857 return -EINVAL;
858 if (val != 0 && val != 1)
859 return -EINVAL;
860
861 mutex_lock(&data->lock);
862 data->config4 = i2c_smbus_read_byte_data(client, REG_CONFIG4);
863 if (val)
864 data->config4 |= CONFIG4_MAXDUTY;
865 else
866 data->config4 &= ~CONFIG4_MAXDUTY;
867 i2c_smbus_write_byte_data(client, REG_CONFIG4, data->config4);
868 mutex_unlock(&data->lock);
869
870 return count;
871}
872
873static ssize_t show_vrm(struct device *dev, struct device_attribute *devattr,
874 char *buf)
875{
876 struct adt7475_data *data = dev_get_drvdata(dev);
877 return sprintf(buf, "%d\n", (int)data->vrm);
878}
879
880static ssize_t set_vrm(struct device *dev, struct device_attribute *devattr,
881 const char *buf, size_t count)
882{
883 struct adt7475_data *data = dev_get_drvdata(dev);
884 long val;
885
886 if (strict_strtol(buf, 10, &val))
887 return -EINVAL;
888 if (val < 0 || val > 255)
889 return -EINVAL;
890 data->vrm = val;
891
892 return count;
893}
894
895static ssize_t show_vid(struct device *dev, struct device_attribute *devattr,
896 char *buf)
897{
898 struct adt7475_data *data = adt7475_update_device(dev);
899 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
900}
901
902static SENSOR_DEVICE_ATTR_2(in0_input, S_IRUGO, show_voltage, NULL, INPUT, 0);
903static SENSOR_DEVICE_ATTR_2(in0_max, S_IRUGO | S_IWUSR, show_voltage,
904 set_voltage, MAX, 0);
905static SENSOR_DEVICE_ATTR_2(in0_min, S_IRUGO | S_IWUSR, show_voltage,
906 set_voltage, MIN, 0);
907static SENSOR_DEVICE_ATTR_2(in0_alarm, S_IRUGO, show_voltage, NULL, ALARM, 0);
908static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_voltage, NULL, INPUT, 1);
909static SENSOR_DEVICE_ATTR_2(in1_max, S_IRUGO | S_IWUSR, show_voltage,
910 set_voltage, MAX, 1);
911static SENSOR_DEVICE_ATTR_2(in1_min, S_IRUGO | S_IWUSR, show_voltage,
912 set_voltage, MIN, 1);
913static SENSOR_DEVICE_ATTR_2(in1_alarm, S_IRUGO, show_voltage, NULL, ALARM, 1);
914static SENSOR_DEVICE_ATTR_2(in2_input, S_IRUGO, show_voltage, NULL, INPUT, 2);
915static SENSOR_DEVICE_ATTR_2(in2_max, S_IRUGO | S_IWUSR, show_voltage,
916 set_voltage, MAX, 2);
917static SENSOR_DEVICE_ATTR_2(in2_min, S_IRUGO | S_IWUSR, show_voltage,
918 set_voltage, MIN, 2);
919static SENSOR_DEVICE_ATTR_2(in2_alarm, S_IRUGO, show_voltage, NULL, ALARM, 2);
920static SENSOR_DEVICE_ATTR_2(in3_input, S_IRUGO, show_voltage, NULL, INPUT, 3);
921static SENSOR_DEVICE_ATTR_2(in3_max, S_IRUGO | S_IWUSR, show_voltage,
922 set_voltage, MAX, 3);
923static SENSOR_DEVICE_ATTR_2(in3_min, S_IRUGO | S_IWUSR, show_voltage,
924 set_voltage, MIN, 3);
925static SENSOR_DEVICE_ATTR_2(in3_alarm, S_IRUGO, show_voltage, NULL, ALARM, 3);
926static SENSOR_DEVICE_ATTR_2(in4_input, S_IRUGO, show_voltage, NULL, INPUT, 4);
927static SENSOR_DEVICE_ATTR_2(in4_max, S_IRUGO | S_IWUSR, show_voltage,
928 set_voltage, MAX, 4);
929static SENSOR_DEVICE_ATTR_2(in4_min, S_IRUGO | S_IWUSR, show_voltage,
930 set_voltage, MIN, 4);
931static SENSOR_DEVICE_ATTR_2(in4_alarm, S_IRUGO, show_voltage, NULL, ALARM, 8);
932static SENSOR_DEVICE_ATTR_2(in5_input, S_IRUGO, show_voltage, NULL, INPUT, 5);
933static SENSOR_DEVICE_ATTR_2(in5_max, S_IRUGO | S_IWUSR, show_voltage,
934 set_voltage, MAX, 5);
935static SENSOR_DEVICE_ATTR_2(in5_min, S_IRUGO | S_IWUSR, show_voltage,
936 set_voltage, MIN, 5);
937static SENSOR_DEVICE_ATTR_2(in5_alarm, S_IRUGO, show_voltage, NULL, ALARM, 31);
938static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, INPUT, 0);
939static SENSOR_DEVICE_ATTR_2(temp1_alarm, S_IRUGO, show_temp, NULL, ALARM, 0);
940static SENSOR_DEVICE_ATTR_2(temp1_fault, S_IRUGO, show_temp, NULL, FAULT, 0);
941static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
942 MAX, 0);
943static SENSOR_DEVICE_ATTR_2(temp1_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
944 MIN, 0);
945static SENSOR_DEVICE_ATTR_2(temp1_offset, S_IRUGO | S_IWUSR, show_temp,
946 set_temp, OFFSET, 0);
947static SENSOR_DEVICE_ATTR_2(temp1_auto_point1_temp, S_IRUGO | S_IWUSR,
948 show_temp, set_temp, AUTOMIN, 0);
949static SENSOR_DEVICE_ATTR_2(temp1_auto_point2_temp, S_IRUGO | S_IWUSR,
950 show_point2, set_point2, 0, 0);
951static SENSOR_DEVICE_ATTR_2(temp1_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
952 THERM, 0);
953static SENSOR_DEVICE_ATTR_2(temp1_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
954 set_temp, HYSTERSIS, 0);
955static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, INPUT, 1);
956static SENSOR_DEVICE_ATTR_2(temp2_alarm, S_IRUGO, show_temp, NULL, ALARM, 1);
957static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
958 MAX, 1);
959static SENSOR_DEVICE_ATTR_2(temp2_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
960 MIN, 1);
961static SENSOR_DEVICE_ATTR_2(temp2_offset, S_IRUGO | S_IWUSR, show_temp,
962 set_temp, OFFSET, 1);
963static SENSOR_DEVICE_ATTR_2(temp2_auto_point1_temp, S_IRUGO | S_IWUSR,
964 show_temp, set_temp, AUTOMIN, 1);
965static SENSOR_DEVICE_ATTR_2(temp2_auto_point2_temp, S_IRUGO | S_IWUSR,
966 show_point2, set_point2, 0, 1);
967static SENSOR_DEVICE_ATTR_2(temp2_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
968 THERM, 1);
969static SENSOR_DEVICE_ATTR_2(temp2_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
970 set_temp, HYSTERSIS, 1);
971static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, INPUT, 2);
972static SENSOR_DEVICE_ATTR_2(temp3_alarm, S_IRUGO, show_temp, NULL, ALARM, 2);
973static SENSOR_DEVICE_ATTR_2(temp3_fault, S_IRUGO, show_temp, NULL, FAULT, 2);
974static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
975 MAX, 2);
976static SENSOR_DEVICE_ATTR_2(temp3_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
977 MIN, 2);
978static SENSOR_DEVICE_ATTR_2(temp3_offset, S_IRUGO | S_IWUSR, show_temp,
979 set_temp, OFFSET, 2);
980static SENSOR_DEVICE_ATTR_2(temp3_auto_point1_temp, S_IRUGO | S_IWUSR,
981 show_temp, set_temp, AUTOMIN, 2);
982static SENSOR_DEVICE_ATTR_2(temp3_auto_point2_temp, S_IRUGO | S_IWUSR,
983 show_point2, set_point2, 0, 2);
984static SENSOR_DEVICE_ATTR_2(temp3_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
985 THERM, 2);
986static SENSOR_DEVICE_ATTR_2(temp3_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
987 set_temp, HYSTERSIS, 2);
988static SENSOR_DEVICE_ATTR_2(fan1_input, S_IRUGO, show_tach, NULL, INPUT, 0);
989static SENSOR_DEVICE_ATTR_2(fan1_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
990 MIN, 0);
991static SENSOR_DEVICE_ATTR_2(fan1_alarm, S_IRUGO, show_tach, NULL, ALARM, 0);
992static SENSOR_DEVICE_ATTR_2(fan2_input, S_IRUGO, show_tach, NULL, INPUT, 1);
993static SENSOR_DEVICE_ATTR_2(fan2_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
994 MIN, 1);
995static SENSOR_DEVICE_ATTR_2(fan2_alarm, S_IRUGO, show_tach, NULL, ALARM, 1);
996static SENSOR_DEVICE_ATTR_2(fan3_input, S_IRUGO, show_tach, NULL, INPUT, 2);
997static SENSOR_DEVICE_ATTR_2(fan3_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
998 MIN, 2);
999static SENSOR_DEVICE_ATTR_2(fan3_alarm, S_IRUGO, show_tach, NULL, ALARM, 2);
1000static SENSOR_DEVICE_ATTR_2(fan4_input, S_IRUGO, show_tach, NULL, INPUT, 3);
1001static SENSOR_DEVICE_ATTR_2(fan4_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
1002 MIN, 3);
1003static SENSOR_DEVICE_ATTR_2(fan4_alarm, S_IRUGO, show_tach, NULL, ALARM, 3);
1004static SENSOR_DEVICE_ATTR_2(pwm1, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
1005 0);
1006static SENSOR_DEVICE_ATTR_2(pwm1_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
1007 set_pwmfreq, INPUT, 0);
1008static SENSOR_DEVICE_ATTR_2(pwm1_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
1009 set_pwmctrl, INPUT, 0);
1010static SENSOR_DEVICE_ATTR_2(pwm1_auto_channels_temp, S_IRUGO | S_IWUSR,
1011 show_pwmchan, set_pwmchan, INPUT, 0);
1012static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
1013 set_pwm, MIN, 0);
1014static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
1015 set_pwm, MAX, 0);
1016static SENSOR_DEVICE_ATTR_2(pwm2, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
1017 1);
1018static SENSOR_DEVICE_ATTR_2(pwm2_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
1019 set_pwmfreq, INPUT, 1);
1020static SENSOR_DEVICE_ATTR_2(pwm2_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
1021 set_pwmctrl, INPUT, 1);
1022static SENSOR_DEVICE_ATTR_2(pwm2_auto_channels_temp, S_IRUGO | S_IWUSR,
1023 show_pwmchan, set_pwmchan, INPUT, 1);
1024static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
1025 set_pwm, MIN, 1);
1026static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
1027 set_pwm, MAX, 1);
1028static SENSOR_DEVICE_ATTR_2(pwm3, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
1029 2);
1030static SENSOR_DEVICE_ATTR_2(pwm3_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
1031 set_pwmfreq, INPUT, 2);
1032static SENSOR_DEVICE_ATTR_2(pwm3_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
1033 set_pwmctrl, INPUT, 2);
1034static SENSOR_DEVICE_ATTR_2(pwm3_auto_channels_temp, S_IRUGO | S_IWUSR,
1035 show_pwmchan, set_pwmchan, INPUT, 2);
1036static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
1037 set_pwm, MIN, 2);
1038static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
1039 set_pwm, MAX, 2);
1040
1041/* Non-standard name, might need revisiting */
1042static DEVICE_ATTR(pwm_use_point2_pwm_at_crit, S_IWUSR | S_IRUGO,
1043 show_pwm_at_crit, set_pwm_at_crit);
1044
1045static DEVICE_ATTR(vrm, S_IWUSR | S_IRUGO, show_vrm, set_vrm);
1046static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL);
1047
1048static struct attribute *adt7475_attrs[] = {
1049 &sensor_dev_attr_in1_input.dev_attr.attr,
1050 &sensor_dev_attr_in1_max.dev_attr.attr,
1051 &sensor_dev_attr_in1_min.dev_attr.attr,
1052 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1053 &sensor_dev_attr_in2_input.dev_attr.attr,
1054 &sensor_dev_attr_in2_max.dev_attr.attr,
1055 &sensor_dev_attr_in2_min.dev_attr.attr,
1056 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1057 &sensor_dev_attr_temp1_input.dev_attr.attr,
1058 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1059 &sensor_dev_attr_temp1_fault.dev_attr.attr,
1060 &sensor_dev_attr_temp1_max.dev_attr.attr,
1061 &sensor_dev_attr_temp1_min.dev_attr.attr,
1062 &sensor_dev_attr_temp1_offset.dev_attr.attr,
1063 &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr,
1064 &sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr,
1065 &sensor_dev_attr_temp1_crit.dev_attr.attr,
1066 &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
1067 &sensor_dev_attr_temp2_input.dev_attr.attr,
1068 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1069 &sensor_dev_attr_temp2_max.dev_attr.attr,
1070 &sensor_dev_attr_temp2_min.dev_attr.attr,
1071 &sensor_dev_attr_temp2_offset.dev_attr.attr,
1072 &sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr,
1073 &sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr,
1074 &sensor_dev_attr_temp2_crit.dev_attr.attr,
1075 &sensor_dev_attr_temp2_crit_hyst.dev_attr.attr,
1076 &sensor_dev_attr_temp3_input.dev_attr.attr,
1077 &sensor_dev_attr_temp3_fault.dev_attr.attr,
1078 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1079 &sensor_dev_attr_temp3_max.dev_attr.attr,
1080 &sensor_dev_attr_temp3_min.dev_attr.attr,
1081 &sensor_dev_attr_temp3_offset.dev_attr.attr,
1082 &sensor_dev_attr_temp3_auto_point1_temp.dev_attr.attr,
1083 &sensor_dev_attr_temp3_auto_point2_temp.dev_attr.attr,
1084 &sensor_dev_attr_temp3_crit.dev_attr.attr,
1085 &sensor_dev_attr_temp3_crit_hyst.dev_attr.attr,
1086 &sensor_dev_attr_fan1_input.dev_attr.attr,
1087 &sensor_dev_attr_fan1_min.dev_attr.attr,
1088 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1089 &sensor_dev_attr_fan2_input.dev_attr.attr,
1090 &sensor_dev_attr_fan2_min.dev_attr.attr,
1091 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1092 &sensor_dev_attr_fan3_input.dev_attr.attr,
1093 &sensor_dev_attr_fan3_min.dev_attr.attr,
1094 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1095 &sensor_dev_attr_pwm1.dev_attr.attr,
1096 &sensor_dev_attr_pwm1_freq.dev_attr.attr,
1097 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1098 &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
1099 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1100 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1101 &sensor_dev_attr_pwm3.dev_attr.attr,
1102 &sensor_dev_attr_pwm3_freq.dev_attr.attr,
1103 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1104 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
1105 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1106 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1107 &dev_attr_pwm_use_point2_pwm_at_crit.attr,
1108 NULL,
1109};
1110
1111static struct attribute *fan4_attrs[] = {
1112 &sensor_dev_attr_fan4_input.dev_attr.attr,
1113 &sensor_dev_attr_fan4_min.dev_attr.attr,
1114 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1115 NULL
1116};
1117
1118static struct attribute *pwm2_attrs[] = {
1119 &sensor_dev_attr_pwm2.dev_attr.attr,
1120 &sensor_dev_attr_pwm2_freq.dev_attr.attr,
1121 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1122 &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
1123 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1124 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1125 NULL
1126};
1127
1128static struct attribute *in0_attrs[] = {
1129 &sensor_dev_attr_in0_input.dev_attr.attr,
1130 &sensor_dev_attr_in0_max.dev_attr.attr,
1131 &sensor_dev_attr_in0_min.dev_attr.attr,
1132 &sensor_dev_attr_in0_alarm.dev_attr.attr,
1133 NULL
1134};
1135
1136static struct attribute *in3_attrs[] = {
1137 &sensor_dev_attr_in3_input.dev_attr.attr,
1138 &sensor_dev_attr_in3_max.dev_attr.attr,
1139 &sensor_dev_attr_in3_min.dev_attr.attr,
1140 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1141 NULL
1142};
1143
1144static struct attribute *in4_attrs[] = {
1145 &sensor_dev_attr_in4_input.dev_attr.attr,
1146 &sensor_dev_attr_in4_max.dev_attr.attr,
1147 &sensor_dev_attr_in4_min.dev_attr.attr,
1148 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1149 NULL
1150};
1151
1152static struct attribute *in5_attrs[] = {
1153 &sensor_dev_attr_in5_input.dev_attr.attr,
1154 &sensor_dev_attr_in5_max.dev_attr.attr,
1155 &sensor_dev_attr_in5_min.dev_attr.attr,
1156 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1157 NULL
1158};
1159
1160static struct attribute *vid_attrs[] = {
1161 &dev_attr_cpu0_vid.attr,
1162 &dev_attr_vrm.attr,
1163 NULL
1164};
1165
1166static struct attribute_group adt7475_attr_group = { .attrs = adt7475_attrs };
1167static struct attribute_group fan4_attr_group = { .attrs = fan4_attrs };
1168static struct attribute_group pwm2_attr_group = { .attrs = pwm2_attrs };
1169static struct attribute_group in0_attr_group = { .attrs = in0_attrs };
1170static struct attribute_group in3_attr_group = { .attrs = in3_attrs };
1171static struct attribute_group in4_attr_group = { .attrs = in4_attrs };
1172static struct attribute_group in5_attr_group = { .attrs = in5_attrs };
1173static struct attribute_group vid_attr_group = { .attrs = vid_attrs };
1174
1175static int adt7475_detect(struct i2c_client *client,
1176 struct i2c_board_info *info)
1177{
1178 struct i2c_adapter *adapter = client->adapter;
1179 int vendid, devid, devid2;
1180 const char *name;
1181
1182 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1183 return -ENODEV;
1184
1185 vendid = adt7475_read(REG_VENDID);
1186 devid2 = adt7475_read(REG_DEVID2);
1187 if (vendid != 0x41 || /* Analog Devices */
1188 (devid2 & 0xf8) != 0x68)
1189 return -ENODEV;
1190
1191 devid = adt7475_read(REG_DEVID);
1192 if (devid == 0x73)
1193 name = "adt7473";
1194 else if (devid == 0x75 && client->addr == 0x2e)
1195 name = "adt7475";
1196 else if (devid == 0x76)
1197 name = "adt7476";
1198 else if ((devid2 & 0xfc) == 0x6c)
1199 name = "adt7490";
1200 else {
1201 dev_dbg(&adapter->dev,
1202 "Couldn't detect an ADT7473/75/76/90 part at "
1203 "0x%02x\n", (unsigned int)client->addr);
1204 return -ENODEV;
1205 }
1206
1207 strlcpy(info->type, name, I2C_NAME_SIZE);
1208
1209 return 0;
1210}
1211
1212static void adt7475_remove_files(struct i2c_client *client,
1213 struct adt7475_data *data)
1214{
1215 sysfs_remove_group(&client->dev.kobj, &adt7475_attr_group);
1216 if (data->has_fan4)
1217 sysfs_remove_group(&client->dev.kobj, &fan4_attr_group);
1218 if (data->has_pwm2)
1219 sysfs_remove_group(&client->dev.kobj, &pwm2_attr_group);
1220 if (data->has_voltage & (1 << 0))
1221 sysfs_remove_group(&client->dev.kobj, &in0_attr_group);
1222 if (data->has_voltage & (1 << 3))
1223 sysfs_remove_group(&client->dev.kobj, &in3_attr_group);
1224 if (data->has_voltage & (1 << 4))
1225 sysfs_remove_group(&client->dev.kobj, &in4_attr_group);
1226 if (data->has_voltage & (1 << 5))
1227 sysfs_remove_group(&client->dev.kobj, &in5_attr_group);
1228 if (data->has_vid)
1229 sysfs_remove_group(&client->dev.kobj, &vid_attr_group);
1230}
1231
1232static int adt7475_probe(struct i2c_client *client,
1233 const struct i2c_device_id *id)
1234{
1235 static const char *names[] = {
1236 [adt7473] = "ADT7473",
1237 [adt7475] = "ADT7475",
1238 [adt7476] = "ADT7476",
1239 [adt7490] = "ADT7490",
1240 };
1241
1242 struct adt7475_data *data;
1243 int i, ret = 0, revision;
1244 u8 config2, config3;
1245
1246 data = kzalloc(sizeof(*data), GFP_KERNEL);
1247 if (data == NULL)
1248 return -ENOMEM;
1249
1250 mutex_init(&data->lock);
1251 i2c_set_clientdata(client, data);
1252
1253 /* Initialize device-specific values */
1254 switch (id->driver_data) {
1255 case adt7476:
1256 data->has_voltage = 0x0e; /* in1 to in3 */
1257 revision = adt7475_read(REG_DEVID2) & 0x07;
1258 break;
1259 case adt7490:
1260 data->has_voltage = 0x3e; /* in1 to in5 */
1261 revision = adt7475_read(REG_DEVID2) & 0x03;
1262 if (revision == 0x03)
1263 revision += adt7475_read(REG_DEVREV2);
1264 break;
1265 default:
1266 data->has_voltage = 0x06; /* in1, in2 */
1267 revision = adt7475_read(REG_DEVID2) & 0x07;
1268 }
1269
1270 config3 = adt7475_read(REG_CONFIG3);
1271 /* Pin PWM2 may alternatively be used for ALERT output */
1272 if (!(config3 & CONFIG3_SMBALERT))
1273 data->has_pwm2 = 1;
1274 /* Meaning of this bit is inverted for the ADT7473-1 */
1275 if (id->driver_data == adt7473 && revision >= 1)
1276 data->has_pwm2 = !data->has_pwm2;
1277
1278 data->config4 = adt7475_read(REG_CONFIG4);
1279 /* Pin TACH4 may alternatively be used for THERM */
1280 if ((data->config4 & CONFIG4_PINFUNC) == 0x0)
1281 data->has_fan4 = 1;
1282
1283 /* THERM configuration is more complex on the ADT7476 and ADT7490,
1284 because 2 different pins (TACH4 and +2.5 Vin) can be used for
1285 this function */
1286 if (id->driver_data == adt7490) {
1287 if ((data->config4 & CONFIG4_PINFUNC) == 0x1 &&
1288 !(config3 & CONFIG3_THERM))
1289 data->has_fan4 = 1;
1290 }
1291 if (id->driver_data == adt7476 || id->driver_data == adt7490) {
1292 if (!(config3 & CONFIG3_THERM) ||
1293 (data->config4 & CONFIG4_PINFUNC) == 0x1)
1294 data->has_voltage |= (1 << 0); /* in0 */
1295 }
1296
1297 /* On the ADT7476, the +12V input pin may instead be used as VID5,
1298 and VID pins may alternatively be used as GPIO */
1299 if (id->driver_data == adt7476) {
1300 u8 vid = adt7475_read(REG_VID);
1301 if (!(vid & VID_VIDSEL))
1302 data->has_voltage |= (1 << 4); /* in4 */
1303
1304 data->has_vid = !(adt7475_read(REG_CONFIG5) & CONFIG5_VIDGPIO);
1305 }
1306
1307 /* Voltage attenuators can be bypassed, globally or individually */
1308 config2 = adt7475_read(REG_CONFIG2);
1309 if (config2 & CONFIG2_ATTN) {
1310 data->bypass_attn = (0x3 << 3) | 0x3;
1311 } else {
1312 data->bypass_attn = ((data->config4 & CONFIG4_ATTN_IN10) >> 4) |
1313 ((data->config4 & CONFIG4_ATTN_IN43) >> 3);
1314 }
1315 data->bypass_attn &= data->has_voltage;
1316
1317 /* Call adt7475_read_pwm for all pwm's as this will reprogram any
1318 pwm's which are disabled to manual mode with 0% duty cycle */
1319 for (i = 0; i < ADT7475_PWM_COUNT; i++)
1320 adt7475_read_pwm(client, i);
1321
1322 ret = sysfs_create_group(&client->dev.kobj, &adt7475_attr_group);
1323 if (ret)
1324 goto efree;
1325
1326 /* Features that can be disabled individually */
1327 if (data->has_fan4) {
1328 ret = sysfs_create_group(&client->dev.kobj, &fan4_attr_group);
1329 if (ret)
1330 goto eremove;
1331 }
1332 if (data->has_pwm2) {
1333 ret = sysfs_create_group(&client->dev.kobj, &pwm2_attr_group);
1334 if (ret)
1335 goto eremove;
1336 }
1337 if (data->has_voltage & (1 << 0)) {
1338 ret = sysfs_create_group(&client->dev.kobj, &in0_attr_group);
1339 if (ret)
1340 goto eremove;
1341 }
1342 if (data->has_voltage & (1 << 3)) {
1343 ret = sysfs_create_group(&client->dev.kobj, &in3_attr_group);
1344 if (ret)
1345 goto eremove;
1346 }
1347 if (data->has_voltage & (1 << 4)) {
1348 ret = sysfs_create_group(&client->dev.kobj, &in4_attr_group);
1349 if (ret)
1350 goto eremove;
1351 }
1352 if (data->has_voltage & (1 << 5)) {
1353 ret = sysfs_create_group(&client->dev.kobj, &in5_attr_group);
1354 if (ret)
1355 goto eremove;
1356 }
1357 if (data->has_vid) {
1358 data->vrm = vid_which_vrm();
1359 ret = sysfs_create_group(&client->dev.kobj, &vid_attr_group);
1360 if (ret)
1361 goto eremove;
1362 }
1363
1364 data->hwmon_dev = hwmon_device_register(&client->dev);
1365 if (IS_ERR(data->hwmon_dev)) {
1366 ret = PTR_ERR(data->hwmon_dev);
1367 goto eremove;
1368 }
1369
1370 dev_info(&client->dev, "%s device, revision %d\n",
1371 names[id->driver_data], revision);
1372 if ((data->has_voltage & 0x11) || data->has_fan4 || data->has_pwm2)
1373 dev_info(&client->dev, "Optional features:%s%s%s%s%s\n",
1374 (data->has_voltage & (1 << 0)) ? " in0" : "",
1375 (data->has_voltage & (1 << 4)) ? " in4" : "",
1376 data->has_fan4 ? " fan4" : "",
1377 data->has_pwm2 ? " pwm2" : "",
1378 data->has_vid ? " vid" : "");
1379 if (data->bypass_attn)
1380 dev_info(&client->dev, "Bypassing attenuators on:%s%s%s%s\n",
1381 (data->bypass_attn & (1 << 0)) ? " in0" : "",
1382 (data->bypass_attn & (1 << 1)) ? " in1" : "",
1383 (data->bypass_attn & (1 << 3)) ? " in3" : "",
1384 (data->bypass_attn & (1 << 4)) ? " in4" : "");
1385
1386 return 0;
1387
1388eremove:
1389 adt7475_remove_files(client, data);
1390efree:
1391 kfree(data);
1392 return ret;
1393}
1394
1395static int adt7475_remove(struct i2c_client *client)
1396{
1397 struct adt7475_data *data = i2c_get_clientdata(client);
1398
1399 hwmon_device_unregister(data->hwmon_dev);
1400 adt7475_remove_files(client, data);
1401 kfree(data);
1402
1403 return 0;
1404}
1405
1406static struct i2c_driver adt7475_driver = {
1407 .class = I2C_CLASS_HWMON,
1408 .driver = {
1409 .name = "adt7475",
1410 },
1411 .probe = adt7475_probe,
1412 .remove = adt7475_remove,
1413 .id_table = adt7475_id,
1414 .detect = adt7475_detect,
1415 .address_list = normal_i2c,
1416};
1417
1418static void adt7475_read_hystersis(struct i2c_client *client)
1419{
1420 struct adt7475_data *data = i2c_get_clientdata(client);
1421
1422 data->temp[HYSTERSIS][0] = (u16) adt7475_read(REG_REMOTE1_HYSTERSIS);
1423 data->temp[HYSTERSIS][1] = data->temp[HYSTERSIS][0];
1424 data->temp[HYSTERSIS][2] = (u16) adt7475_read(REG_REMOTE2_HYSTERSIS);
1425}
1426
1427static void adt7475_read_pwm(struct i2c_client *client, int index)
1428{
1429 struct adt7475_data *data = i2c_get_clientdata(client);
1430 unsigned int v;
1431
1432 data->pwm[CONTROL][index] = adt7475_read(PWM_CONFIG_REG(index));
1433
1434 /* Figure out the internal value for pwmctrl and pwmchan
1435 based on the current settings */
1436 v = (data->pwm[CONTROL][index] >> 5) & 7;
1437
1438 if (v == 3)
1439 data->pwmctl[index] = 0;
1440 else if (v == 7)
1441 data->pwmctl[index] = 1;
1442 else if (v == 4) {
1443 /* The fan is disabled - we don't want to
1444 support that, so change to manual mode and
1445 set the duty cycle to 0 instead
1446 */
1447 data->pwm[INPUT][index] = 0;
1448 data->pwm[CONTROL][index] &= ~0xE0;
1449 data->pwm[CONTROL][index] |= (7 << 5);
1450
1451 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
1452 data->pwm[INPUT][index]);
1453
1454 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
1455 data->pwm[CONTROL][index]);
1456
1457 data->pwmctl[index] = 1;
1458 } else {
1459 data->pwmctl[index] = 2;
1460
1461 switch (v) {
1462 case 0:
1463 data->pwmchan[index] = 1;
1464 break;
1465 case 1:
1466 data->pwmchan[index] = 2;
1467 break;
1468 case 2:
1469 data->pwmchan[index] = 4;
1470 break;
1471 case 5:
1472 data->pwmchan[index] = 6;
1473 break;
1474 case 6:
1475 data->pwmchan[index] = 7;
1476 break;
1477 }
1478 }
1479}
1480
1481static struct adt7475_data *adt7475_update_device(struct device *dev)
1482{
1483 struct i2c_client *client = to_i2c_client(dev);
1484 struct adt7475_data *data = i2c_get_clientdata(client);
1485 u16 ext;
1486 int i;
1487
1488 mutex_lock(&data->lock);
1489
1490 /* Measurement values update every 2 seconds */
1491 if (time_after(jiffies, data->measure_updated + HZ * 2) ||
1492 !data->valid) {
1493 data->alarms = adt7475_read(REG_STATUS2) << 8;
1494 data->alarms |= adt7475_read(REG_STATUS1);
1495
1496 ext = (adt7475_read(REG_EXTEND2) << 8) |
1497 adt7475_read(REG_EXTEND1);
1498 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
1499 if (!(data->has_voltage & (1 << i)))
1500 continue;
1501 data->voltage[INPUT][i] =
1502 (adt7475_read(VOLTAGE_REG(i)) << 2) |
1503 ((ext >> (i * 2)) & 3);
1504 }
1505
1506 for (i = 0; i < ADT7475_TEMP_COUNT; i++)
1507 data->temp[INPUT][i] =
1508 (adt7475_read(TEMP_REG(i)) << 2) |
1509 ((ext >> ((i + 5) * 2)) & 3);
1510
1511 if (data->has_voltage & (1 << 5)) {
1512 data->alarms |= adt7475_read(REG_STATUS4) << 24;
1513 ext = adt7475_read(REG_EXTEND3);
1514 data->voltage[INPUT][5] = adt7475_read(REG_VTT) << 2 |
1515 ((ext >> 4) & 3);
1516 }
1517
1518 for (i = 0; i < ADT7475_TACH_COUNT; i++) {
1519 if (i == 3 && !data->has_fan4)
1520 continue;
1521 data->tach[INPUT][i] =
1522 adt7475_read_word(client, TACH_REG(i));
1523 }
1524
1525 /* Updated by hw when in auto mode */
1526 for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1527 if (i == 1 && !data->has_pwm2)
1528 continue;
1529 data->pwm[INPUT][i] = adt7475_read(PWM_REG(i));
1530 }
1531
1532 if (data->has_vid)
1533 data->vid = adt7475_read(REG_VID) & 0x3f;
1534
1535 data->measure_updated = jiffies;
1536 }
1537
1538 /* Limits and settings, should never change update every 60 seconds */
1539 if (time_after(jiffies, data->limits_updated + HZ * 60) ||
1540 !data->valid) {
1541 data->config4 = adt7475_read(REG_CONFIG4);
1542 data->config5 = adt7475_read(REG_CONFIG5);
1543
1544 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
1545 if (!(data->has_voltage & (1 << i)))
1546 continue;
1547 /* Adjust values so they match the input precision */
1548 data->voltage[MIN][i] =
1549 adt7475_read(VOLTAGE_MIN_REG(i)) << 2;
1550 data->voltage[MAX][i] =
1551 adt7475_read(VOLTAGE_MAX_REG(i)) << 2;
1552 }
1553
1554 if (data->has_voltage & (1 << 5)) {
1555 data->voltage[MIN][5] = adt7475_read(REG_VTT_MIN) << 2;
1556 data->voltage[MAX][5] = adt7475_read(REG_VTT_MAX) << 2;
1557 }
1558
1559 for (i = 0; i < ADT7475_TEMP_COUNT; i++) {
1560 /* Adjust values so they match the input precision */
1561 data->temp[MIN][i] =
1562 adt7475_read(TEMP_MIN_REG(i)) << 2;
1563 data->temp[MAX][i] =
1564 adt7475_read(TEMP_MAX_REG(i)) << 2;
1565 data->temp[AUTOMIN][i] =
1566 adt7475_read(TEMP_TMIN_REG(i)) << 2;
1567 data->temp[THERM][i] =
1568 adt7475_read(TEMP_THERM_REG(i)) << 2;
1569 data->temp[OFFSET][i] =
1570 adt7475_read(TEMP_OFFSET_REG(i));
1571 }
1572 adt7475_read_hystersis(client);
1573
1574 for (i = 0; i < ADT7475_TACH_COUNT; i++) {
1575 if (i == 3 && !data->has_fan4)
1576 continue;
1577 data->tach[MIN][i] =
1578 adt7475_read_word(client, TACH_MIN_REG(i));
1579 }
1580
1581 for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1582 if (i == 1 && !data->has_pwm2)
1583 continue;
1584 data->pwm[MAX][i] = adt7475_read(PWM_MAX_REG(i));
1585 data->pwm[MIN][i] = adt7475_read(PWM_MIN_REG(i));
1586 /* Set the channel and control information */
1587 adt7475_read_pwm(client, i);
1588 }
1589
1590 data->range[0] = adt7475_read(TEMP_TRANGE_REG(0));
1591 data->range[1] = adt7475_read(TEMP_TRANGE_REG(1));
1592 data->range[2] = adt7475_read(TEMP_TRANGE_REG(2));
1593
1594 data->limits_updated = jiffies;
1595 data->valid = 1;
1596 }
1597
1598 mutex_unlock(&data->lock);
1599
1600 return data;
1601}
1602
1603static int __init sensors_adt7475_init(void)
1604{
1605 return i2c_add_driver(&adt7475_driver);
1606}
1607
1608static void __exit sensors_adt7475_exit(void)
1609{
1610 i2c_del_driver(&adt7475_driver);
1611}
1612
1613MODULE_AUTHOR("Advanced Micro Devices, Inc");
1614MODULE_DESCRIPTION("adt7475 driver");
1615MODULE_LICENSE("GPL");
1616
1617module_init(sensors_adt7475_init);
1618module_exit(sensors_adt7475_exit);
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * adt7475 - Thermal sensor driver for the ADT7475 chip and derivatives
4 * Copyright (C) 2007-2008, Advanced Micro Devices, Inc.
5 * Copyright (C) 2008 Jordan Crouse <jordan@cosmicpenguin.net>
6 * Copyright (C) 2008 Hans de Goede <hdegoede@redhat.com>
7 * Copyright (C) 2009 Jean Delvare <jdelvare@suse.de>
8 *
9 * Derived from the lm83 driver by Jean Delvare
10 */
11
12#include <linux/module.h>
13#include <linux/of_device.h>
14#include <linux/init.h>
15#include <linux/slab.h>
16#include <linux/i2c.h>
17#include <linux/hwmon.h>
18#include <linux/hwmon-sysfs.h>
19#include <linux/hwmon-vid.h>
20#include <linux/err.h>
21#include <linux/jiffies.h>
22#include <linux/of.h>
23#include <linux/util_macros.h>
24
25/* Indexes for the sysfs hooks */
26
27#define INPUT 0
28#define MIN 1
29#define MAX 2
30#define CONTROL 3
31#define OFFSET 3
32#define AUTOMIN 4
33#define THERM 5
34#define HYSTERSIS 6
35
36/*
37 * These are unique identifiers for the sysfs functions - unlike the
38 * numbers above, these are not also indexes into an array
39 */
40
41#define ALARM 9
42#define FAULT 10
43
44/* 7475 Common Registers */
45
46#define REG_DEVREV2 0x12 /* ADT7490 only */
47
48#define REG_VTT 0x1E /* ADT7490 only */
49#define REG_EXTEND3 0x1F /* ADT7490 only */
50
51#define REG_VOLTAGE_BASE 0x20
52#define REG_TEMP_BASE 0x25
53#define REG_TACH_BASE 0x28
54#define REG_PWM_BASE 0x30
55#define REG_PWM_MAX_BASE 0x38
56
57#define REG_DEVID 0x3D
58#define REG_VENDID 0x3E
59#define REG_DEVID2 0x3F
60
61#define REG_CONFIG1 0x40
62
63#define REG_STATUS1 0x41
64#define REG_STATUS2 0x42
65
66#define REG_VID 0x43 /* ADT7476 only */
67
68#define REG_VOLTAGE_MIN_BASE 0x44
69#define REG_VOLTAGE_MAX_BASE 0x45
70
71#define REG_TEMP_MIN_BASE 0x4E
72#define REG_TEMP_MAX_BASE 0x4F
73
74#define REG_TACH_MIN_BASE 0x54
75
76#define REG_PWM_CONFIG_BASE 0x5C
77
78#define REG_TEMP_TRANGE_BASE 0x5F
79
80#define REG_ENHANCE_ACOUSTICS1 0x62
81#define REG_ENHANCE_ACOUSTICS2 0x63
82
83#define REG_PWM_MIN_BASE 0x64
84
85#define REG_TEMP_TMIN_BASE 0x67
86#define REG_TEMP_THERM_BASE 0x6A
87
88#define REG_REMOTE1_HYSTERSIS 0x6D
89#define REG_REMOTE2_HYSTERSIS 0x6E
90
91#define REG_TEMP_OFFSET_BASE 0x70
92
93#define REG_CONFIG2 0x73
94
95#define REG_EXTEND1 0x76
96#define REG_EXTEND2 0x77
97
98#define REG_CONFIG3 0x78
99#define REG_CONFIG5 0x7C
100#define REG_CONFIG4 0x7D
101
102#define REG_STATUS4 0x81 /* ADT7490 only */
103
104#define REG_VTT_MIN 0x84 /* ADT7490 only */
105#define REG_VTT_MAX 0x86 /* ADT7490 only */
106
107#define VID_VIDSEL 0x80 /* ADT7476 only */
108
109#define CONFIG2_ATTN 0x20
110
111#define CONFIG3_SMBALERT 0x01
112#define CONFIG3_THERM 0x02
113
114#define CONFIG4_PINFUNC 0x03
115#define CONFIG4_MAXDUTY 0x08
116#define CONFIG4_ATTN_IN10 0x30
117#define CONFIG4_ATTN_IN43 0xC0
118
119#define CONFIG5_TWOSCOMP 0x01
120#define CONFIG5_TEMPOFFSET 0x02
121#define CONFIG5_VIDGPIO 0x10 /* ADT7476 only */
122
123/* ADT7475 Settings */
124
125#define ADT7475_VOLTAGE_COUNT 5 /* Not counting Vtt */
126#define ADT7475_TEMP_COUNT 3
127#define ADT7475_TACH_COUNT 4
128#define ADT7475_PWM_COUNT 3
129
130/* Macro to read the registers */
131
132#define adt7475_read(reg) i2c_smbus_read_byte_data(client, (reg))
133
134/* Macros to easily index the registers */
135
136#define TACH_REG(idx) (REG_TACH_BASE + ((idx) * 2))
137#define TACH_MIN_REG(idx) (REG_TACH_MIN_BASE + ((idx) * 2))
138
139#define PWM_REG(idx) (REG_PWM_BASE + (idx))
140#define PWM_MAX_REG(idx) (REG_PWM_MAX_BASE + (idx))
141#define PWM_MIN_REG(idx) (REG_PWM_MIN_BASE + (idx))
142#define PWM_CONFIG_REG(idx) (REG_PWM_CONFIG_BASE + (idx))
143
144#define VOLTAGE_REG(idx) (REG_VOLTAGE_BASE + (idx))
145#define VOLTAGE_MIN_REG(idx) (REG_VOLTAGE_MIN_BASE + ((idx) * 2))
146#define VOLTAGE_MAX_REG(idx) (REG_VOLTAGE_MAX_BASE + ((idx) * 2))
147
148#define TEMP_REG(idx) (REG_TEMP_BASE + (idx))
149#define TEMP_MIN_REG(idx) (REG_TEMP_MIN_BASE + ((idx) * 2))
150#define TEMP_MAX_REG(idx) (REG_TEMP_MAX_BASE + ((idx) * 2))
151#define TEMP_TMIN_REG(idx) (REG_TEMP_TMIN_BASE + (idx))
152#define TEMP_THERM_REG(idx) (REG_TEMP_THERM_BASE + (idx))
153#define TEMP_OFFSET_REG(idx) (REG_TEMP_OFFSET_BASE + (idx))
154#define TEMP_TRANGE_REG(idx) (REG_TEMP_TRANGE_BASE + (idx))
155
156static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
157
158enum chips { adt7473, adt7475, adt7476, adt7490 };
159
160static const struct i2c_device_id adt7475_id[] = {
161 { "adt7473", adt7473 },
162 { "adt7475", adt7475 },
163 { "adt7476", adt7476 },
164 { "adt7490", adt7490 },
165 { }
166};
167MODULE_DEVICE_TABLE(i2c, adt7475_id);
168
169static const struct of_device_id __maybe_unused adt7475_of_match[] = {
170 {
171 .compatible = "adi,adt7473",
172 .data = (void *)adt7473
173 },
174 {
175 .compatible = "adi,adt7475",
176 .data = (void *)adt7475
177 },
178 {
179 .compatible = "adi,adt7476",
180 .data = (void *)adt7476
181 },
182 {
183 .compatible = "adi,adt7490",
184 .data = (void *)adt7490
185 },
186 { },
187};
188MODULE_DEVICE_TABLE(of, adt7475_of_match);
189
190struct adt7475_data {
191 struct i2c_client *client;
192 struct mutex lock;
193
194 unsigned long measure_updated;
195 bool valid;
196
197 u8 config2;
198 u8 config4;
199 u8 config5;
200 u8 has_voltage;
201 u8 bypass_attn; /* Bypass voltage attenuator */
202 u8 has_pwm2:1;
203 u8 has_fan4:1;
204 u8 has_vid:1;
205 u32 alarms;
206 u16 voltage[3][6];
207 u16 temp[7][3];
208 u16 tach[2][4];
209 u8 pwm[4][3];
210 u8 range[3];
211 u8 pwmctl[3];
212 u8 pwmchan[3];
213 u8 enh_acoustics[2];
214
215 u8 vid;
216 u8 vrm;
217 const struct attribute_group *groups[9];
218};
219
220static struct i2c_driver adt7475_driver;
221static struct adt7475_data *adt7475_update_device(struct device *dev);
222static void adt7475_read_hystersis(struct i2c_client *client);
223static void adt7475_read_pwm(struct i2c_client *client, int index);
224
225/* Given a temp value, convert it to register value */
226
227static inline u16 temp2reg(struct adt7475_data *data, long val)
228{
229 u16 ret;
230
231 if (!(data->config5 & CONFIG5_TWOSCOMP)) {
232 val = clamp_val(val, -64000, 191000);
233 ret = (val + 64500) / 1000;
234 } else {
235 val = clamp_val(val, -128000, 127000);
236 if (val < -500)
237 ret = (256500 + val) / 1000;
238 else
239 ret = (val + 500) / 1000;
240 }
241
242 return ret << 2;
243}
244
245/* Given a register value, convert it to a real temp value */
246
247static inline int reg2temp(struct adt7475_data *data, u16 reg)
248{
249 if (data->config5 & CONFIG5_TWOSCOMP) {
250 if (reg >= 512)
251 return (reg - 1024) * 250;
252 else
253 return reg * 250;
254 } else
255 return (reg - 256) * 250;
256}
257
258static inline int tach2rpm(u16 tach)
259{
260 if (tach == 0 || tach == 0xFFFF)
261 return 0;
262
263 return (90000 * 60) / tach;
264}
265
266static inline u16 rpm2tach(unsigned long rpm)
267{
268 if (rpm == 0)
269 return 0;
270
271 return clamp_val((90000 * 60) / rpm, 1, 0xFFFF);
272}
273
274/* Scaling factors for voltage inputs, taken from the ADT7490 datasheet */
275static const int adt7473_in_scaling[ADT7475_VOLTAGE_COUNT + 1][2] = {
276 { 45, 94 }, /* +2.5V */
277 { 175, 525 }, /* Vccp */
278 { 68, 71 }, /* Vcc */
279 { 93, 47 }, /* +5V */
280 { 120, 20 }, /* +12V */
281 { 45, 45 }, /* Vtt */
282};
283
284static inline int reg2volt(int channel, u16 reg, u8 bypass_attn)
285{
286 const int *r = adt7473_in_scaling[channel];
287
288 if (bypass_attn & (1 << channel))
289 return DIV_ROUND_CLOSEST(reg * 2250, 1024);
290 return DIV_ROUND_CLOSEST(reg * (r[0] + r[1]) * 2250, r[1] * 1024);
291}
292
293static inline u16 volt2reg(int channel, long volt, u8 bypass_attn)
294{
295 const int *r = adt7473_in_scaling[channel];
296 long reg;
297
298 if (bypass_attn & (1 << channel))
299 reg = DIV_ROUND_CLOSEST(volt * 1024, 2250);
300 else
301 reg = DIV_ROUND_CLOSEST(volt * r[1] * 1024,
302 (r[0] + r[1]) * 2250);
303 return clamp_val(reg, 0, 1023) & (0xff << 2);
304}
305
306static int adt7475_read_word(struct i2c_client *client, int reg)
307{
308 int val1, val2;
309
310 val1 = i2c_smbus_read_byte_data(client, reg);
311 if (val1 < 0)
312 return val1;
313 val2 = i2c_smbus_read_byte_data(client, reg + 1);
314 if (val2 < 0)
315 return val2;
316
317 return val1 | (val2 << 8);
318}
319
320static void adt7475_write_word(struct i2c_client *client, int reg, u16 val)
321{
322 i2c_smbus_write_byte_data(client, reg + 1, val >> 8);
323 i2c_smbus_write_byte_data(client, reg, val & 0xFF);
324}
325
326static ssize_t voltage_show(struct device *dev, struct device_attribute *attr,
327 char *buf)
328{
329 struct adt7475_data *data = adt7475_update_device(dev);
330 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
331 unsigned short val;
332
333 if (IS_ERR(data))
334 return PTR_ERR(data);
335
336 switch (sattr->nr) {
337 case ALARM:
338 return sprintf(buf, "%d\n",
339 (data->alarms >> sattr->index) & 1);
340 default:
341 val = data->voltage[sattr->nr][sattr->index];
342 return sprintf(buf, "%d\n",
343 reg2volt(sattr->index, val, data->bypass_attn));
344 }
345}
346
347static ssize_t voltage_store(struct device *dev,
348 struct device_attribute *attr, const char *buf,
349 size_t count)
350{
351
352 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
353 struct adt7475_data *data = dev_get_drvdata(dev);
354 struct i2c_client *client = data->client;
355 unsigned char reg;
356 long val;
357
358 if (kstrtol(buf, 10, &val))
359 return -EINVAL;
360
361 mutex_lock(&data->lock);
362
363 data->voltage[sattr->nr][sattr->index] =
364 volt2reg(sattr->index, val, data->bypass_attn);
365
366 if (sattr->index < ADT7475_VOLTAGE_COUNT) {
367 if (sattr->nr == MIN)
368 reg = VOLTAGE_MIN_REG(sattr->index);
369 else
370 reg = VOLTAGE_MAX_REG(sattr->index);
371 } else {
372 if (sattr->nr == MIN)
373 reg = REG_VTT_MIN;
374 else
375 reg = REG_VTT_MAX;
376 }
377
378 i2c_smbus_write_byte_data(client, reg,
379 data->voltage[sattr->nr][sattr->index] >> 2);
380 mutex_unlock(&data->lock);
381
382 return count;
383}
384
385static ssize_t temp_show(struct device *dev, struct device_attribute *attr,
386 char *buf)
387{
388 struct adt7475_data *data = adt7475_update_device(dev);
389 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
390 int out;
391
392 if (IS_ERR(data))
393 return PTR_ERR(data);
394
395 switch (sattr->nr) {
396 case HYSTERSIS:
397 mutex_lock(&data->lock);
398 out = data->temp[sattr->nr][sattr->index];
399 if (sattr->index != 1)
400 out = (out >> 4) & 0xF;
401 else
402 out = (out & 0xF);
403 /*
404 * Show the value as an absolute number tied to
405 * THERM
406 */
407 out = reg2temp(data, data->temp[THERM][sattr->index]) -
408 out * 1000;
409 mutex_unlock(&data->lock);
410 break;
411
412 case OFFSET:
413 /*
414 * Offset is always 2's complement, regardless of the
415 * setting in CONFIG5
416 */
417 mutex_lock(&data->lock);
418 out = (s8)data->temp[sattr->nr][sattr->index];
419 if (data->config5 & CONFIG5_TEMPOFFSET)
420 out *= 1000;
421 else
422 out *= 500;
423 mutex_unlock(&data->lock);
424 break;
425
426 case ALARM:
427 out = (data->alarms >> (sattr->index + 4)) & 1;
428 break;
429
430 case FAULT:
431 /* Note - only for remote1 and remote2 */
432 out = !!(data->alarms & (sattr->index ? 0x8000 : 0x4000));
433 break;
434
435 default:
436 /* All other temp values are in the configured format */
437 out = reg2temp(data, data->temp[sattr->nr][sattr->index]);
438 }
439
440 return sprintf(buf, "%d\n", out);
441}
442
443static ssize_t temp_store(struct device *dev, struct device_attribute *attr,
444 const char *buf, size_t count)
445{
446 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
447 struct adt7475_data *data = dev_get_drvdata(dev);
448 struct i2c_client *client = data->client;
449 unsigned char reg = 0;
450 u8 out;
451 int temp;
452 long val;
453
454 if (kstrtol(buf, 10, &val))
455 return -EINVAL;
456
457 mutex_lock(&data->lock);
458
459 /* We need the config register in all cases for temp <-> reg conv. */
460 data->config5 = adt7475_read(REG_CONFIG5);
461
462 switch (sattr->nr) {
463 case OFFSET:
464 if (data->config5 & CONFIG5_TEMPOFFSET) {
465 val = clamp_val(val, -63000, 127000);
466 out = data->temp[OFFSET][sattr->index] = val / 1000;
467 } else {
468 val = clamp_val(val, -63000, 64000);
469 out = data->temp[OFFSET][sattr->index] = val / 500;
470 }
471 break;
472
473 case HYSTERSIS:
474 /*
475 * The value will be given as an absolute value, turn it
476 * into an offset based on THERM
477 */
478
479 /* Read fresh THERM and HYSTERSIS values from the chip */
480 data->temp[THERM][sattr->index] =
481 adt7475_read(TEMP_THERM_REG(sattr->index)) << 2;
482 adt7475_read_hystersis(client);
483
484 temp = reg2temp(data, data->temp[THERM][sattr->index]);
485 val = clamp_val(val, temp - 15000, temp);
486 val = (temp - val) / 1000;
487
488 if (sattr->index != 1) {
489 data->temp[HYSTERSIS][sattr->index] &= 0xF0;
490 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF) << 4;
491 } else {
492 data->temp[HYSTERSIS][sattr->index] &= 0x0F;
493 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF);
494 }
495
496 out = data->temp[HYSTERSIS][sattr->index];
497 break;
498
499 default:
500 data->temp[sattr->nr][sattr->index] = temp2reg(data, val);
501
502 /*
503 * We maintain an extra 2 digits of precision for simplicity
504 * - shift those back off before writing the value
505 */
506 out = (u8) (data->temp[sattr->nr][sattr->index] >> 2);
507 }
508
509 switch (sattr->nr) {
510 case MIN:
511 reg = TEMP_MIN_REG(sattr->index);
512 break;
513 case MAX:
514 reg = TEMP_MAX_REG(sattr->index);
515 break;
516 case OFFSET:
517 reg = TEMP_OFFSET_REG(sattr->index);
518 break;
519 case AUTOMIN:
520 reg = TEMP_TMIN_REG(sattr->index);
521 break;
522 case THERM:
523 reg = TEMP_THERM_REG(sattr->index);
524 break;
525 case HYSTERSIS:
526 if (sattr->index != 2)
527 reg = REG_REMOTE1_HYSTERSIS;
528 else
529 reg = REG_REMOTE2_HYSTERSIS;
530
531 break;
532 }
533
534 i2c_smbus_write_byte_data(client, reg, out);
535
536 mutex_unlock(&data->lock);
537 return count;
538}
539
540/* Assuming CONFIG6[SLOW] is 0 */
541static const int ad7475_st_map[] = {
542 37500, 18800, 12500, 7500, 4700, 3100, 1600, 800,
543};
544
545static ssize_t temp_st_show(struct device *dev, struct device_attribute *attr,
546 char *buf)
547{
548 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
549 struct adt7475_data *data = dev_get_drvdata(dev);
550 long val;
551
552 switch (sattr->index) {
553 case 0:
554 val = data->enh_acoustics[0] & 0xf;
555 break;
556 case 1:
557 val = (data->enh_acoustics[1] >> 4) & 0xf;
558 break;
559 case 2:
560 default:
561 val = data->enh_acoustics[1] & 0xf;
562 break;
563 }
564
565 if (val & 0x8)
566 return sprintf(buf, "%d\n", ad7475_st_map[val & 0x7]);
567 else
568 return sprintf(buf, "0\n");
569}
570
571static ssize_t temp_st_store(struct device *dev,
572 struct device_attribute *attr, const char *buf,
573 size_t count)
574{
575 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
576 struct adt7475_data *data = dev_get_drvdata(dev);
577 struct i2c_client *client = data->client;
578 unsigned char reg;
579 int shift, idx;
580 ulong val;
581
582 if (kstrtoul(buf, 10, &val))
583 return -EINVAL;
584
585 switch (sattr->index) {
586 case 0:
587 reg = REG_ENHANCE_ACOUSTICS1;
588 shift = 0;
589 idx = 0;
590 break;
591 case 1:
592 reg = REG_ENHANCE_ACOUSTICS2;
593 shift = 0;
594 idx = 1;
595 break;
596 case 2:
597 default:
598 reg = REG_ENHANCE_ACOUSTICS2;
599 shift = 4;
600 idx = 1;
601 break;
602 }
603
604 if (val > 0) {
605 val = find_closest_descending(val, ad7475_st_map,
606 ARRAY_SIZE(ad7475_st_map));
607 val |= 0x8;
608 }
609
610 mutex_lock(&data->lock);
611
612 data->enh_acoustics[idx] &= ~(0xf << shift);
613 data->enh_acoustics[idx] |= (val << shift);
614
615 i2c_smbus_write_byte_data(client, reg, data->enh_acoustics[idx]);
616
617 mutex_unlock(&data->lock);
618
619 return count;
620}
621
622/*
623 * Table of autorange values - the user will write the value in millidegrees,
624 * and we'll convert it
625 */
626static const int autorange_table[] = {
627 2000, 2500, 3330, 4000, 5000, 6670, 8000,
628 10000, 13330, 16000, 20000, 26670, 32000, 40000,
629 53330, 80000
630};
631
632static ssize_t point2_show(struct device *dev, struct device_attribute *attr,
633 char *buf)
634{
635 struct adt7475_data *data = adt7475_update_device(dev);
636 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
637 int out, val;
638
639 if (IS_ERR(data))
640 return PTR_ERR(data);
641
642 mutex_lock(&data->lock);
643 out = (data->range[sattr->index] >> 4) & 0x0F;
644 val = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
645 mutex_unlock(&data->lock);
646
647 return sprintf(buf, "%d\n", val + autorange_table[out]);
648}
649
650static ssize_t point2_store(struct device *dev, struct device_attribute *attr,
651 const char *buf, size_t count)
652{
653 struct adt7475_data *data = dev_get_drvdata(dev);
654 struct i2c_client *client = data->client;
655 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
656 int temp;
657 long val;
658
659 if (kstrtol(buf, 10, &val))
660 return -EINVAL;
661
662 mutex_lock(&data->lock);
663
664 /* Get a fresh copy of the needed registers */
665 data->config5 = adt7475_read(REG_CONFIG5);
666 data->temp[AUTOMIN][sattr->index] =
667 adt7475_read(TEMP_TMIN_REG(sattr->index)) << 2;
668 data->range[sattr->index] =
669 adt7475_read(TEMP_TRANGE_REG(sattr->index));
670
671 /*
672 * The user will write an absolute value, so subtract the start point
673 * to figure the range
674 */
675 temp = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
676 val = clamp_val(val, temp + autorange_table[0],
677 temp + autorange_table[ARRAY_SIZE(autorange_table) - 1]);
678 val -= temp;
679
680 /* Find the nearest table entry to what the user wrote */
681 val = find_closest(val, autorange_table, ARRAY_SIZE(autorange_table));
682
683 data->range[sattr->index] &= ~0xF0;
684 data->range[sattr->index] |= val << 4;
685
686 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
687 data->range[sattr->index]);
688
689 mutex_unlock(&data->lock);
690 return count;
691}
692
693static ssize_t tach_show(struct device *dev, struct device_attribute *attr,
694 char *buf)
695{
696 struct adt7475_data *data = adt7475_update_device(dev);
697 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
698 int out;
699
700 if (IS_ERR(data))
701 return PTR_ERR(data);
702
703 if (sattr->nr == ALARM)
704 out = (data->alarms >> (sattr->index + 10)) & 1;
705 else
706 out = tach2rpm(data->tach[sattr->nr][sattr->index]);
707
708 return sprintf(buf, "%d\n", out);
709}
710
711static ssize_t tach_store(struct device *dev, struct device_attribute *attr,
712 const char *buf, size_t count)
713{
714
715 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
716 struct adt7475_data *data = dev_get_drvdata(dev);
717 struct i2c_client *client = data->client;
718 unsigned long val;
719
720 if (kstrtoul(buf, 10, &val))
721 return -EINVAL;
722
723 mutex_lock(&data->lock);
724
725 data->tach[MIN][sattr->index] = rpm2tach(val);
726
727 adt7475_write_word(client, TACH_MIN_REG(sattr->index),
728 data->tach[MIN][sattr->index]);
729
730 mutex_unlock(&data->lock);
731 return count;
732}
733
734static ssize_t pwm_show(struct device *dev, struct device_attribute *attr,
735 char *buf)
736{
737 struct adt7475_data *data = adt7475_update_device(dev);
738 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
739
740 if (IS_ERR(data))
741 return PTR_ERR(data);
742
743 return sprintf(buf, "%d\n", data->pwm[sattr->nr][sattr->index]);
744}
745
746static ssize_t pwmchan_show(struct device *dev, struct device_attribute *attr,
747 char *buf)
748{
749 struct adt7475_data *data = adt7475_update_device(dev);
750 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
751
752 if (IS_ERR(data))
753 return PTR_ERR(data);
754
755 return sprintf(buf, "%d\n", data->pwmchan[sattr->index]);
756}
757
758static ssize_t pwmctrl_show(struct device *dev, struct device_attribute *attr,
759 char *buf)
760{
761 struct adt7475_data *data = adt7475_update_device(dev);
762 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
763
764 if (IS_ERR(data))
765 return PTR_ERR(data);
766
767 return sprintf(buf, "%d\n", data->pwmctl[sattr->index]);
768}
769
770static ssize_t pwm_store(struct device *dev, struct device_attribute *attr,
771 const char *buf, size_t count)
772{
773
774 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
775 struct adt7475_data *data = dev_get_drvdata(dev);
776 struct i2c_client *client = data->client;
777 unsigned char reg = 0;
778 long val;
779
780 if (kstrtol(buf, 10, &val))
781 return -EINVAL;
782
783 mutex_lock(&data->lock);
784
785 switch (sattr->nr) {
786 case INPUT:
787 /* Get a fresh value for CONTROL */
788 data->pwm[CONTROL][sattr->index] =
789 adt7475_read(PWM_CONFIG_REG(sattr->index));
790
791 /*
792 * If we are not in manual mode, then we shouldn't allow
793 * the user to set the pwm speed
794 */
795 if (((data->pwm[CONTROL][sattr->index] >> 5) & 7) != 7) {
796 mutex_unlock(&data->lock);
797 return count;
798 }
799
800 reg = PWM_REG(sattr->index);
801 break;
802
803 case MIN:
804 reg = PWM_MIN_REG(sattr->index);
805 break;
806
807 case MAX:
808 reg = PWM_MAX_REG(sattr->index);
809 break;
810 }
811
812 data->pwm[sattr->nr][sattr->index] = clamp_val(val, 0, 0xFF);
813 i2c_smbus_write_byte_data(client, reg,
814 data->pwm[sattr->nr][sattr->index]);
815 mutex_unlock(&data->lock);
816
817 return count;
818}
819
820static ssize_t stall_disable_show(struct device *dev,
821 struct device_attribute *attr, char *buf)
822{
823 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
824 struct adt7475_data *data = dev_get_drvdata(dev);
825
826 u8 mask = BIT(5 + sattr->index);
827
828 return sprintf(buf, "%d\n", !!(data->enh_acoustics[0] & mask));
829}
830
831static ssize_t stall_disable_store(struct device *dev,
832 struct device_attribute *attr,
833 const char *buf, size_t count)
834{
835 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
836 struct adt7475_data *data = dev_get_drvdata(dev);
837 struct i2c_client *client = data->client;
838 long val;
839 u8 mask = BIT(5 + sattr->index);
840
841 if (kstrtol(buf, 10, &val))
842 return -EINVAL;
843
844 mutex_lock(&data->lock);
845
846 data->enh_acoustics[0] &= ~mask;
847 if (val)
848 data->enh_acoustics[0] |= mask;
849
850 i2c_smbus_write_byte_data(client, REG_ENHANCE_ACOUSTICS1,
851 data->enh_acoustics[0]);
852
853 mutex_unlock(&data->lock);
854
855 return count;
856}
857
858/* Called by set_pwmctrl and set_pwmchan */
859
860static int hw_set_pwm(struct i2c_client *client, int index,
861 unsigned int pwmctl, unsigned int pwmchan)
862{
863 struct adt7475_data *data = i2c_get_clientdata(client);
864 long val = 0;
865
866 switch (pwmctl) {
867 case 0:
868 val = 0x03; /* Run at full speed */
869 break;
870 case 1:
871 val = 0x07; /* Manual mode */
872 break;
873 case 2:
874 switch (pwmchan) {
875 case 1:
876 /* Remote1 controls PWM */
877 val = 0x00;
878 break;
879 case 2:
880 /* local controls PWM */
881 val = 0x01;
882 break;
883 case 4:
884 /* remote2 controls PWM */
885 val = 0x02;
886 break;
887 case 6:
888 /* local/remote2 control PWM */
889 val = 0x05;
890 break;
891 case 7:
892 /* All three control PWM */
893 val = 0x06;
894 break;
895 default:
896 return -EINVAL;
897 }
898 break;
899 default:
900 return -EINVAL;
901 }
902
903 data->pwmctl[index] = pwmctl;
904 data->pwmchan[index] = pwmchan;
905
906 data->pwm[CONTROL][index] &= ~0xE0;
907 data->pwm[CONTROL][index] |= (val & 7) << 5;
908
909 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
910 data->pwm[CONTROL][index]);
911
912 return 0;
913}
914
915static ssize_t pwmchan_store(struct device *dev,
916 struct device_attribute *attr, const char *buf,
917 size_t count)
918{
919 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
920 struct adt7475_data *data = dev_get_drvdata(dev);
921 struct i2c_client *client = data->client;
922 int r;
923 long val;
924
925 if (kstrtol(buf, 10, &val))
926 return -EINVAL;
927
928 mutex_lock(&data->lock);
929 /* Read Modify Write PWM values */
930 adt7475_read_pwm(client, sattr->index);
931 r = hw_set_pwm(client, sattr->index, data->pwmctl[sattr->index], val);
932 if (r)
933 count = r;
934 mutex_unlock(&data->lock);
935
936 return count;
937}
938
939static ssize_t pwmctrl_store(struct device *dev,
940 struct device_attribute *attr, const char *buf,
941 size_t count)
942{
943 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
944 struct adt7475_data *data = dev_get_drvdata(dev);
945 struct i2c_client *client = data->client;
946 int r;
947 long val;
948
949 if (kstrtol(buf, 10, &val))
950 return -EINVAL;
951
952 mutex_lock(&data->lock);
953 /* Read Modify Write PWM values */
954 adt7475_read_pwm(client, sattr->index);
955 r = hw_set_pwm(client, sattr->index, val, data->pwmchan[sattr->index]);
956 if (r)
957 count = r;
958 mutex_unlock(&data->lock);
959
960 return count;
961}
962
963/* List of frequencies for the PWM */
964static const int pwmfreq_table[] = {
965 11, 14, 22, 29, 35, 44, 58, 88, 22500
966};
967
968static ssize_t pwmfreq_show(struct device *dev, struct device_attribute *attr,
969 char *buf)
970{
971 struct adt7475_data *data = adt7475_update_device(dev);
972 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
973 int idx;
974
975 if (IS_ERR(data))
976 return PTR_ERR(data);
977 idx = clamp_val(data->range[sattr->index] & 0xf, 0,
978 ARRAY_SIZE(pwmfreq_table) - 1);
979
980 return sprintf(buf, "%d\n", pwmfreq_table[idx]);
981}
982
983static ssize_t pwmfreq_store(struct device *dev,
984 struct device_attribute *attr, const char *buf,
985 size_t count)
986{
987 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
988 struct adt7475_data *data = dev_get_drvdata(dev);
989 struct i2c_client *client = data->client;
990 int out;
991 long val;
992
993 if (kstrtol(buf, 10, &val))
994 return -EINVAL;
995
996 out = find_closest(val, pwmfreq_table, ARRAY_SIZE(pwmfreq_table));
997
998 mutex_lock(&data->lock);
999
1000 data->range[sattr->index] =
1001 adt7475_read(TEMP_TRANGE_REG(sattr->index));
1002 data->range[sattr->index] &= ~0xf;
1003 data->range[sattr->index] |= out;
1004
1005 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
1006 data->range[sattr->index]);
1007
1008 mutex_unlock(&data->lock);
1009 return count;
1010}
1011
1012static ssize_t pwm_use_point2_pwm_at_crit_show(struct device *dev,
1013 struct device_attribute *devattr,
1014 char *buf)
1015{
1016 struct adt7475_data *data = adt7475_update_device(dev);
1017
1018 if (IS_ERR(data))
1019 return PTR_ERR(data);
1020
1021 return sprintf(buf, "%d\n", !!(data->config4 & CONFIG4_MAXDUTY));
1022}
1023
1024static ssize_t pwm_use_point2_pwm_at_crit_store(struct device *dev,
1025 struct device_attribute *devattr,
1026 const char *buf, size_t count)
1027{
1028 struct adt7475_data *data = dev_get_drvdata(dev);
1029 struct i2c_client *client = data->client;
1030 long val;
1031
1032 if (kstrtol(buf, 10, &val))
1033 return -EINVAL;
1034 if (val != 0 && val != 1)
1035 return -EINVAL;
1036
1037 mutex_lock(&data->lock);
1038 data->config4 = i2c_smbus_read_byte_data(client, REG_CONFIG4);
1039 if (val)
1040 data->config4 |= CONFIG4_MAXDUTY;
1041 else
1042 data->config4 &= ~CONFIG4_MAXDUTY;
1043 i2c_smbus_write_byte_data(client, REG_CONFIG4, data->config4);
1044 mutex_unlock(&data->lock);
1045
1046 return count;
1047}
1048
1049static ssize_t vrm_show(struct device *dev, struct device_attribute *devattr,
1050 char *buf)
1051{
1052 struct adt7475_data *data = dev_get_drvdata(dev);
1053 return sprintf(buf, "%d\n", (int)data->vrm);
1054}
1055
1056static ssize_t vrm_store(struct device *dev, struct device_attribute *devattr,
1057 const char *buf, size_t count)
1058{
1059 struct adt7475_data *data = dev_get_drvdata(dev);
1060 long val;
1061
1062 if (kstrtol(buf, 10, &val))
1063 return -EINVAL;
1064 if (val < 0 || val > 255)
1065 return -EINVAL;
1066 data->vrm = val;
1067
1068 return count;
1069}
1070
1071static ssize_t cpu0_vid_show(struct device *dev,
1072 struct device_attribute *devattr, char *buf)
1073{
1074 struct adt7475_data *data = adt7475_update_device(dev);
1075
1076 if (IS_ERR(data))
1077 return PTR_ERR(data);
1078
1079 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
1080}
1081
1082static SENSOR_DEVICE_ATTR_2_RO(in0_input, voltage, INPUT, 0);
1083static SENSOR_DEVICE_ATTR_2_RW(in0_max, voltage, MAX, 0);
1084static SENSOR_DEVICE_ATTR_2_RW(in0_min, voltage, MIN, 0);
1085static SENSOR_DEVICE_ATTR_2_RO(in0_alarm, voltage, ALARM, 0);
1086static SENSOR_DEVICE_ATTR_2_RO(in1_input, voltage, INPUT, 1);
1087static SENSOR_DEVICE_ATTR_2_RW(in1_max, voltage, MAX, 1);
1088static SENSOR_DEVICE_ATTR_2_RW(in1_min, voltage, MIN, 1);
1089static SENSOR_DEVICE_ATTR_2_RO(in1_alarm, voltage, ALARM, 1);
1090static SENSOR_DEVICE_ATTR_2_RO(in2_input, voltage, INPUT, 2);
1091static SENSOR_DEVICE_ATTR_2_RW(in2_max, voltage, MAX, 2);
1092static SENSOR_DEVICE_ATTR_2_RW(in2_min, voltage, MIN, 2);
1093static SENSOR_DEVICE_ATTR_2_RO(in2_alarm, voltage, ALARM, 2);
1094static SENSOR_DEVICE_ATTR_2_RO(in3_input, voltage, INPUT, 3);
1095static SENSOR_DEVICE_ATTR_2_RW(in3_max, voltage, MAX, 3);
1096static SENSOR_DEVICE_ATTR_2_RW(in3_min, voltage, MIN, 3);
1097static SENSOR_DEVICE_ATTR_2_RO(in3_alarm, voltage, ALARM, 3);
1098static SENSOR_DEVICE_ATTR_2_RO(in4_input, voltage, INPUT, 4);
1099static SENSOR_DEVICE_ATTR_2_RW(in4_max, voltage, MAX, 4);
1100static SENSOR_DEVICE_ATTR_2_RW(in4_min, voltage, MIN, 4);
1101static SENSOR_DEVICE_ATTR_2_RO(in4_alarm, voltage, ALARM, 8);
1102static SENSOR_DEVICE_ATTR_2_RO(in5_input, voltage, INPUT, 5);
1103static SENSOR_DEVICE_ATTR_2_RW(in5_max, voltage, MAX, 5);
1104static SENSOR_DEVICE_ATTR_2_RW(in5_min, voltage, MIN, 5);
1105static SENSOR_DEVICE_ATTR_2_RO(in5_alarm, voltage, ALARM, 31);
1106static SENSOR_DEVICE_ATTR_2_RO(temp1_input, temp, INPUT, 0);
1107static SENSOR_DEVICE_ATTR_2_RO(temp1_alarm, temp, ALARM, 0);
1108static SENSOR_DEVICE_ATTR_2_RO(temp1_fault, temp, FAULT, 0);
1109static SENSOR_DEVICE_ATTR_2_RW(temp1_max, temp, MAX, 0);
1110static SENSOR_DEVICE_ATTR_2_RW(temp1_min, temp, MIN, 0);
1111static SENSOR_DEVICE_ATTR_2_RW(temp1_offset, temp, OFFSET, 0);
1112static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_point1_temp, temp, AUTOMIN, 0);
1113static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_point2_temp, point2, 0, 0);
1114static SENSOR_DEVICE_ATTR_2_RW(temp1_crit, temp, THERM, 0);
1115static SENSOR_DEVICE_ATTR_2_RW(temp1_crit_hyst, temp, HYSTERSIS, 0);
1116static SENSOR_DEVICE_ATTR_2_RW(temp1_smoothing, temp_st, 0, 0);
1117static SENSOR_DEVICE_ATTR_2_RO(temp2_input, temp, INPUT, 1);
1118static SENSOR_DEVICE_ATTR_2_RO(temp2_alarm, temp, ALARM, 1);
1119static SENSOR_DEVICE_ATTR_2_RW(temp2_max, temp, MAX, 1);
1120static SENSOR_DEVICE_ATTR_2_RW(temp2_min, temp, MIN, 1);
1121static SENSOR_DEVICE_ATTR_2_RW(temp2_offset, temp, OFFSET, 1);
1122static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_point1_temp, temp, AUTOMIN, 1);
1123static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_point2_temp, point2, 0, 1);
1124static SENSOR_DEVICE_ATTR_2_RW(temp2_crit, temp, THERM, 1);
1125static SENSOR_DEVICE_ATTR_2_RW(temp2_crit_hyst, temp, HYSTERSIS, 1);
1126static SENSOR_DEVICE_ATTR_2_RW(temp2_smoothing, temp_st, 0, 1);
1127static SENSOR_DEVICE_ATTR_2_RO(temp3_input, temp, INPUT, 2);
1128static SENSOR_DEVICE_ATTR_2_RO(temp3_alarm, temp, ALARM, 2);
1129static SENSOR_DEVICE_ATTR_2_RO(temp3_fault, temp, FAULT, 2);
1130static SENSOR_DEVICE_ATTR_2_RW(temp3_max, temp, MAX, 2);
1131static SENSOR_DEVICE_ATTR_2_RW(temp3_min, temp, MIN, 2);
1132static SENSOR_DEVICE_ATTR_2_RW(temp3_offset, temp, OFFSET, 2);
1133static SENSOR_DEVICE_ATTR_2_RW(temp3_auto_point1_temp, temp, AUTOMIN, 2);
1134static SENSOR_DEVICE_ATTR_2_RW(temp3_auto_point2_temp, point2, 0, 2);
1135static SENSOR_DEVICE_ATTR_2_RW(temp3_crit, temp, THERM, 2);
1136static SENSOR_DEVICE_ATTR_2_RW(temp3_crit_hyst, temp, HYSTERSIS, 2);
1137static SENSOR_DEVICE_ATTR_2_RW(temp3_smoothing, temp_st, 0, 2);
1138static SENSOR_DEVICE_ATTR_2_RO(fan1_input, tach, INPUT, 0);
1139static SENSOR_DEVICE_ATTR_2_RW(fan1_min, tach, MIN, 0);
1140static SENSOR_DEVICE_ATTR_2_RO(fan1_alarm, tach, ALARM, 0);
1141static SENSOR_DEVICE_ATTR_2_RO(fan2_input, tach, INPUT, 1);
1142static SENSOR_DEVICE_ATTR_2_RW(fan2_min, tach, MIN, 1);
1143static SENSOR_DEVICE_ATTR_2_RO(fan2_alarm, tach, ALARM, 1);
1144static SENSOR_DEVICE_ATTR_2_RO(fan3_input, tach, INPUT, 2);
1145static SENSOR_DEVICE_ATTR_2_RW(fan3_min, tach, MIN, 2);
1146static SENSOR_DEVICE_ATTR_2_RO(fan3_alarm, tach, ALARM, 2);
1147static SENSOR_DEVICE_ATTR_2_RO(fan4_input, tach, INPUT, 3);
1148static SENSOR_DEVICE_ATTR_2_RW(fan4_min, tach, MIN, 3);
1149static SENSOR_DEVICE_ATTR_2_RO(fan4_alarm, tach, ALARM, 3);
1150static SENSOR_DEVICE_ATTR_2_RW(pwm1, pwm, INPUT, 0);
1151static SENSOR_DEVICE_ATTR_2_RW(pwm1_freq, pwmfreq, INPUT, 0);
1152static SENSOR_DEVICE_ATTR_2_RW(pwm1_enable, pwmctrl, INPUT, 0);
1153static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_channels_temp, pwmchan, INPUT, 0);
1154static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point1_pwm, pwm, MIN, 0);
1155static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point2_pwm, pwm, MAX, 0);
1156static SENSOR_DEVICE_ATTR_2_RW(pwm1_stall_disable, stall_disable, 0, 0);
1157static SENSOR_DEVICE_ATTR_2_RW(pwm2, pwm, INPUT, 1);
1158static SENSOR_DEVICE_ATTR_2_RW(pwm2_freq, pwmfreq, INPUT, 1);
1159static SENSOR_DEVICE_ATTR_2_RW(pwm2_enable, pwmctrl, INPUT, 1);
1160static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_channels_temp, pwmchan, INPUT, 1);
1161static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point1_pwm, pwm, MIN, 1);
1162static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point2_pwm, pwm, MAX, 1);
1163static SENSOR_DEVICE_ATTR_2_RW(pwm2_stall_disable, stall_disable, 0, 1);
1164static SENSOR_DEVICE_ATTR_2_RW(pwm3, pwm, INPUT, 2);
1165static SENSOR_DEVICE_ATTR_2_RW(pwm3_freq, pwmfreq, INPUT, 2);
1166static SENSOR_DEVICE_ATTR_2_RW(pwm3_enable, pwmctrl, INPUT, 2);
1167static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_channels_temp, pwmchan, INPUT, 2);
1168static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point1_pwm, pwm, MIN, 2);
1169static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point2_pwm, pwm, MAX, 2);
1170static SENSOR_DEVICE_ATTR_2_RW(pwm3_stall_disable, stall_disable, 0, 2);
1171
1172/* Non-standard name, might need revisiting */
1173static DEVICE_ATTR_RW(pwm_use_point2_pwm_at_crit);
1174
1175static DEVICE_ATTR_RW(vrm);
1176static DEVICE_ATTR_RO(cpu0_vid);
1177
1178static struct attribute *adt7475_attrs[] = {
1179 &sensor_dev_attr_in1_input.dev_attr.attr,
1180 &sensor_dev_attr_in1_max.dev_attr.attr,
1181 &sensor_dev_attr_in1_min.dev_attr.attr,
1182 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1183 &sensor_dev_attr_in2_input.dev_attr.attr,
1184 &sensor_dev_attr_in2_max.dev_attr.attr,
1185 &sensor_dev_attr_in2_min.dev_attr.attr,
1186 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1187 &sensor_dev_attr_temp1_input.dev_attr.attr,
1188 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1189 &sensor_dev_attr_temp1_fault.dev_attr.attr,
1190 &sensor_dev_attr_temp1_max.dev_attr.attr,
1191 &sensor_dev_attr_temp1_min.dev_attr.attr,
1192 &sensor_dev_attr_temp1_offset.dev_attr.attr,
1193 &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr,
1194 &sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr,
1195 &sensor_dev_attr_temp1_crit.dev_attr.attr,
1196 &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
1197 &sensor_dev_attr_temp1_smoothing.dev_attr.attr,
1198 &sensor_dev_attr_temp2_input.dev_attr.attr,
1199 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1200 &sensor_dev_attr_temp2_max.dev_attr.attr,
1201 &sensor_dev_attr_temp2_min.dev_attr.attr,
1202 &sensor_dev_attr_temp2_offset.dev_attr.attr,
1203 &sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr,
1204 &sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr,
1205 &sensor_dev_attr_temp2_crit.dev_attr.attr,
1206 &sensor_dev_attr_temp2_crit_hyst.dev_attr.attr,
1207 &sensor_dev_attr_temp2_smoothing.dev_attr.attr,
1208 &sensor_dev_attr_temp3_input.dev_attr.attr,
1209 &sensor_dev_attr_temp3_fault.dev_attr.attr,
1210 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1211 &sensor_dev_attr_temp3_max.dev_attr.attr,
1212 &sensor_dev_attr_temp3_min.dev_attr.attr,
1213 &sensor_dev_attr_temp3_offset.dev_attr.attr,
1214 &sensor_dev_attr_temp3_auto_point1_temp.dev_attr.attr,
1215 &sensor_dev_attr_temp3_auto_point2_temp.dev_attr.attr,
1216 &sensor_dev_attr_temp3_crit.dev_attr.attr,
1217 &sensor_dev_attr_temp3_crit_hyst.dev_attr.attr,
1218 &sensor_dev_attr_temp3_smoothing.dev_attr.attr,
1219 &sensor_dev_attr_fan1_input.dev_attr.attr,
1220 &sensor_dev_attr_fan1_min.dev_attr.attr,
1221 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1222 &sensor_dev_attr_fan2_input.dev_attr.attr,
1223 &sensor_dev_attr_fan2_min.dev_attr.attr,
1224 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1225 &sensor_dev_attr_fan3_input.dev_attr.attr,
1226 &sensor_dev_attr_fan3_min.dev_attr.attr,
1227 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1228 &sensor_dev_attr_pwm1.dev_attr.attr,
1229 &sensor_dev_attr_pwm1_freq.dev_attr.attr,
1230 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1231 &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
1232 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1233 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1234 &sensor_dev_attr_pwm1_stall_disable.dev_attr.attr,
1235 &sensor_dev_attr_pwm3.dev_attr.attr,
1236 &sensor_dev_attr_pwm3_freq.dev_attr.attr,
1237 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1238 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
1239 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1240 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1241 &sensor_dev_attr_pwm3_stall_disable.dev_attr.attr,
1242 &dev_attr_pwm_use_point2_pwm_at_crit.attr,
1243 NULL,
1244};
1245
1246static struct attribute *fan4_attrs[] = {
1247 &sensor_dev_attr_fan4_input.dev_attr.attr,
1248 &sensor_dev_attr_fan4_min.dev_attr.attr,
1249 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1250 NULL
1251};
1252
1253static struct attribute *pwm2_attrs[] = {
1254 &sensor_dev_attr_pwm2.dev_attr.attr,
1255 &sensor_dev_attr_pwm2_freq.dev_attr.attr,
1256 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1257 &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
1258 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1259 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1260 &sensor_dev_attr_pwm2_stall_disable.dev_attr.attr,
1261 NULL
1262};
1263
1264static struct attribute *in0_attrs[] = {
1265 &sensor_dev_attr_in0_input.dev_attr.attr,
1266 &sensor_dev_attr_in0_max.dev_attr.attr,
1267 &sensor_dev_attr_in0_min.dev_attr.attr,
1268 &sensor_dev_attr_in0_alarm.dev_attr.attr,
1269 NULL
1270};
1271
1272static struct attribute *in3_attrs[] = {
1273 &sensor_dev_attr_in3_input.dev_attr.attr,
1274 &sensor_dev_attr_in3_max.dev_attr.attr,
1275 &sensor_dev_attr_in3_min.dev_attr.attr,
1276 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1277 NULL
1278};
1279
1280static struct attribute *in4_attrs[] = {
1281 &sensor_dev_attr_in4_input.dev_attr.attr,
1282 &sensor_dev_attr_in4_max.dev_attr.attr,
1283 &sensor_dev_attr_in4_min.dev_attr.attr,
1284 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1285 NULL
1286};
1287
1288static struct attribute *in5_attrs[] = {
1289 &sensor_dev_attr_in5_input.dev_attr.attr,
1290 &sensor_dev_attr_in5_max.dev_attr.attr,
1291 &sensor_dev_attr_in5_min.dev_attr.attr,
1292 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1293 NULL
1294};
1295
1296static struct attribute *vid_attrs[] = {
1297 &dev_attr_cpu0_vid.attr,
1298 &dev_attr_vrm.attr,
1299 NULL
1300};
1301
1302static const struct attribute_group adt7475_attr_group = { .attrs = adt7475_attrs };
1303static const struct attribute_group fan4_attr_group = { .attrs = fan4_attrs };
1304static const struct attribute_group pwm2_attr_group = { .attrs = pwm2_attrs };
1305static const struct attribute_group in0_attr_group = { .attrs = in0_attrs };
1306static const struct attribute_group in3_attr_group = { .attrs = in3_attrs };
1307static const struct attribute_group in4_attr_group = { .attrs = in4_attrs };
1308static const struct attribute_group in5_attr_group = { .attrs = in5_attrs };
1309static const struct attribute_group vid_attr_group = { .attrs = vid_attrs };
1310
1311static int adt7475_detect(struct i2c_client *client,
1312 struct i2c_board_info *info)
1313{
1314 struct i2c_adapter *adapter = client->adapter;
1315 int vendid, devid, devid2;
1316 const char *name;
1317
1318 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1319 return -ENODEV;
1320
1321 vendid = adt7475_read(REG_VENDID);
1322 devid2 = adt7475_read(REG_DEVID2);
1323 if (vendid != 0x41 || /* Analog Devices */
1324 (devid2 & 0xf8) != 0x68)
1325 return -ENODEV;
1326
1327 devid = adt7475_read(REG_DEVID);
1328 if (devid == 0x73)
1329 name = "adt7473";
1330 else if (devid == 0x75 && client->addr == 0x2e)
1331 name = "adt7475";
1332 else if (devid == 0x76)
1333 name = "adt7476";
1334 else if ((devid2 & 0xfc) == 0x6c)
1335 name = "adt7490";
1336 else {
1337 dev_dbg(&adapter->dev,
1338 "Couldn't detect an ADT7473/75/76/90 part at "
1339 "0x%02x\n", (unsigned int)client->addr);
1340 return -ENODEV;
1341 }
1342
1343 strlcpy(info->type, name, I2C_NAME_SIZE);
1344
1345 return 0;
1346}
1347
1348static int adt7475_update_limits(struct i2c_client *client)
1349{
1350 struct adt7475_data *data = i2c_get_clientdata(client);
1351 int i;
1352 int ret;
1353
1354 ret = adt7475_read(REG_CONFIG4);
1355 if (ret < 0)
1356 return ret;
1357 data->config4 = ret;
1358
1359 ret = adt7475_read(REG_CONFIG5);
1360 if (ret < 0)
1361 return ret;
1362 data->config5 = ret;
1363
1364 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
1365 if (!(data->has_voltage & (1 << i)))
1366 continue;
1367 /* Adjust values so they match the input precision */
1368 ret = adt7475_read(VOLTAGE_MIN_REG(i));
1369 if (ret < 0)
1370 return ret;
1371 data->voltage[MIN][i] = ret << 2;
1372
1373 ret = adt7475_read(VOLTAGE_MAX_REG(i));
1374 if (ret < 0)
1375 return ret;
1376 data->voltage[MAX][i] = ret << 2;
1377 }
1378
1379 if (data->has_voltage & (1 << 5)) {
1380 ret = adt7475_read(REG_VTT_MIN);
1381 if (ret < 0)
1382 return ret;
1383 data->voltage[MIN][5] = ret << 2;
1384
1385 ret = adt7475_read(REG_VTT_MAX);
1386 if (ret < 0)
1387 return ret;
1388 data->voltage[MAX][5] = ret << 2;
1389 }
1390
1391 for (i = 0; i < ADT7475_TEMP_COUNT; i++) {
1392 /* Adjust values so they match the input precision */
1393 ret = adt7475_read(TEMP_MIN_REG(i));
1394 if (ret < 0)
1395 return ret;
1396 data->temp[MIN][i] = ret << 2;
1397
1398 ret = adt7475_read(TEMP_MAX_REG(i));
1399 if (ret < 0)
1400 return ret;
1401 data->temp[MAX][i] = ret << 2;
1402
1403 ret = adt7475_read(TEMP_TMIN_REG(i));
1404 if (ret < 0)
1405 return ret;
1406 data->temp[AUTOMIN][i] = ret << 2;
1407
1408 ret = adt7475_read(TEMP_THERM_REG(i));
1409 if (ret < 0)
1410 return ret;
1411 data->temp[THERM][i] = ret << 2;
1412
1413 ret = adt7475_read(TEMP_OFFSET_REG(i));
1414 if (ret < 0)
1415 return ret;
1416 data->temp[OFFSET][i] = ret;
1417 }
1418 adt7475_read_hystersis(client);
1419
1420 for (i = 0; i < ADT7475_TACH_COUNT; i++) {
1421 if (i == 3 && !data->has_fan4)
1422 continue;
1423 ret = adt7475_read_word(client, TACH_MIN_REG(i));
1424 if (ret < 0)
1425 return ret;
1426 data->tach[MIN][i] = ret;
1427 }
1428
1429 for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1430 if (i == 1 && !data->has_pwm2)
1431 continue;
1432 ret = adt7475_read(PWM_MAX_REG(i));
1433 if (ret < 0)
1434 return ret;
1435 data->pwm[MAX][i] = ret;
1436
1437 ret = adt7475_read(PWM_MIN_REG(i));
1438 if (ret < 0)
1439 return ret;
1440 data->pwm[MIN][i] = ret;
1441 /* Set the channel and control information */
1442 adt7475_read_pwm(client, i);
1443 }
1444
1445 ret = adt7475_read(TEMP_TRANGE_REG(0));
1446 if (ret < 0)
1447 return ret;
1448 data->range[0] = ret;
1449
1450 ret = adt7475_read(TEMP_TRANGE_REG(1));
1451 if (ret < 0)
1452 return ret;
1453 data->range[1] = ret;
1454
1455 ret = adt7475_read(TEMP_TRANGE_REG(2));
1456 if (ret < 0)
1457 return ret;
1458 data->range[2] = ret;
1459
1460 return 0;
1461}
1462
1463static int set_property_bit(const struct i2c_client *client, char *property,
1464 u8 *config, u8 bit_index)
1465{
1466 u32 prop_value = 0;
1467 int ret = of_property_read_u32(client->dev.of_node, property,
1468 &prop_value);
1469
1470 if (!ret) {
1471 if (prop_value)
1472 *config |= (1 << bit_index);
1473 else
1474 *config &= ~(1 << bit_index);
1475 }
1476
1477 return ret;
1478}
1479
1480static int load_attenuators(const struct i2c_client *client, int chip,
1481 struct adt7475_data *data)
1482{
1483 int ret;
1484
1485 if (chip == adt7476 || chip == adt7490) {
1486 set_property_bit(client, "adi,bypass-attenuator-in0",
1487 &data->config4, 4);
1488 set_property_bit(client, "adi,bypass-attenuator-in1",
1489 &data->config4, 5);
1490 set_property_bit(client, "adi,bypass-attenuator-in3",
1491 &data->config4, 6);
1492 set_property_bit(client, "adi,bypass-attenuator-in4",
1493 &data->config4, 7);
1494
1495 ret = i2c_smbus_write_byte_data(client, REG_CONFIG4,
1496 data->config4);
1497 if (ret < 0)
1498 return ret;
1499 } else if (chip == adt7473 || chip == adt7475) {
1500 set_property_bit(client, "adi,bypass-attenuator-in1",
1501 &data->config2, 5);
1502
1503 ret = i2c_smbus_write_byte_data(client, REG_CONFIG2,
1504 data->config2);
1505 if (ret < 0)
1506 return ret;
1507 }
1508
1509 return 0;
1510}
1511
1512static int adt7475_set_pwm_polarity(struct i2c_client *client)
1513{
1514 u32 states[ADT7475_PWM_COUNT];
1515 int ret, i;
1516 u8 val;
1517
1518 ret = of_property_read_u32_array(client->dev.of_node,
1519 "adi,pwm-active-state", states,
1520 ARRAY_SIZE(states));
1521 if (ret)
1522 return ret;
1523
1524 for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1525 ret = adt7475_read(PWM_CONFIG_REG(i));
1526 if (ret < 0)
1527 return ret;
1528 val = ret;
1529 if (states[i])
1530 val &= ~BIT(4);
1531 else
1532 val |= BIT(4);
1533
1534 ret = i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(i), val);
1535 if (ret)
1536 return ret;
1537 }
1538
1539 return 0;
1540}
1541
1542static int adt7475_probe(struct i2c_client *client)
1543{
1544 enum chips chip;
1545 static const char * const names[] = {
1546 [adt7473] = "ADT7473",
1547 [adt7475] = "ADT7475",
1548 [adt7476] = "ADT7476",
1549 [adt7490] = "ADT7490",
1550 };
1551
1552 struct adt7475_data *data;
1553 struct device *hwmon_dev;
1554 int i, ret = 0, revision, group_num = 0;
1555 u8 config3;
1556 const struct i2c_device_id *id = i2c_match_id(adt7475_id, client);
1557
1558 data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
1559 if (data == NULL)
1560 return -ENOMEM;
1561
1562 mutex_init(&data->lock);
1563 data->client = client;
1564 i2c_set_clientdata(client, data);
1565
1566 if (client->dev.of_node)
1567 chip = (enum chips)of_device_get_match_data(&client->dev);
1568 else
1569 chip = id->driver_data;
1570
1571 /* Initialize device-specific values */
1572 switch (chip) {
1573 case adt7476:
1574 data->has_voltage = 0x0e; /* in1 to in3 */
1575 revision = adt7475_read(REG_DEVID2) & 0x07;
1576 break;
1577 case adt7490:
1578 data->has_voltage = 0x3e; /* in1 to in5 */
1579 revision = adt7475_read(REG_DEVID2) & 0x03;
1580 if (revision == 0x03)
1581 revision += adt7475_read(REG_DEVREV2);
1582 break;
1583 default:
1584 data->has_voltage = 0x06; /* in1, in2 */
1585 revision = adt7475_read(REG_DEVID2) & 0x07;
1586 }
1587
1588 config3 = adt7475_read(REG_CONFIG3);
1589 /* Pin PWM2 may alternatively be used for ALERT output */
1590 if (!(config3 & CONFIG3_SMBALERT))
1591 data->has_pwm2 = 1;
1592 /* Meaning of this bit is inverted for the ADT7473-1 */
1593 if (id->driver_data == adt7473 && revision >= 1)
1594 data->has_pwm2 = !data->has_pwm2;
1595
1596 data->config4 = adt7475_read(REG_CONFIG4);
1597 /* Pin TACH4 may alternatively be used for THERM */
1598 if ((data->config4 & CONFIG4_PINFUNC) == 0x0)
1599 data->has_fan4 = 1;
1600
1601 /*
1602 * THERM configuration is more complex on the ADT7476 and ADT7490,
1603 * because 2 different pins (TACH4 and +2.5 Vin) can be used for
1604 * this function
1605 */
1606 if (id->driver_data == adt7490) {
1607 if ((data->config4 & CONFIG4_PINFUNC) == 0x1 &&
1608 !(config3 & CONFIG3_THERM))
1609 data->has_fan4 = 1;
1610 }
1611 if (id->driver_data == adt7476 || id->driver_data == adt7490) {
1612 if (!(config3 & CONFIG3_THERM) ||
1613 (data->config4 & CONFIG4_PINFUNC) == 0x1)
1614 data->has_voltage |= (1 << 0); /* in0 */
1615 }
1616
1617 /*
1618 * On the ADT7476, the +12V input pin may instead be used as VID5,
1619 * and VID pins may alternatively be used as GPIO
1620 */
1621 if (id->driver_data == adt7476) {
1622 u8 vid = adt7475_read(REG_VID);
1623 if (!(vid & VID_VIDSEL))
1624 data->has_voltage |= (1 << 4); /* in4 */
1625
1626 data->has_vid = !(adt7475_read(REG_CONFIG5) & CONFIG5_VIDGPIO);
1627 }
1628
1629 /* Voltage attenuators can be bypassed, globally or individually */
1630 data->config2 = adt7475_read(REG_CONFIG2);
1631 ret = load_attenuators(client, chip, data);
1632 if (ret)
1633 dev_warn(&client->dev, "Error configuring attenuator bypass\n");
1634
1635 if (data->config2 & CONFIG2_ATTN) {
1636 data->bypass_attn = (0x3 << 3) | 0x3;
1637 } else {
1638 data->bypass_attn = ((data->config4 & CONFIG4_ATTN_IN10) >> 4) |
1639 ((data->config4 & CONFIG4_ATTN_IN43) >> 3);
1640 }
1641 data->bypass_attn &= data->has_voltage;
1642
1643 /*
1644 * Call adt7475_read_pwm for all pwm's as this will reprogram any
1645 * pwm's which are disabled to manual mode with 0% duty cycle
1646 */
1647 for (i = 0; i < ADT7475_PWM_COUNT; i++)
1648 adt7475_read_pwm(client, i);
1649
1650 ret = adt7475_set_pwm_polarity(client);
1651 if (ret && ret != -EINVAL)
1652 dev_warn(&client->dev, "Error configuring pwm polarity\n");
1653
1654 /* Start monitoring */
1655 switch (chip) {
1656 case adt7475:
1657 case adt7476:
1658 i2c_smbus_write_byte_data(client, REG_CONFIG1,
1659 adt7475_read(REG_CONFIG1) | 0x01);
1660 break;
1661 default:
1662 break;
1663 }
1664
1665 data->groups[group_num++] = &adt7475_attr_group;
1666
1667 /* Features that can be disabled individually */
1668 if (data->has_fan4) {
1669 data->groups[group_num++] = &fan4_attr_group;
1670 }
1671 if (data->has_pwm2) {
1672 data->groups[group_num++] = &pwm2_attr_group;
1673 }
1674 if (data->has_voltage & (1 << 0)) {
1675 data->groups[group_num++] = &in0_attr_group;
1676 }
1677 if (data->has_voltage & (1 << 3)) {
1678 data->groups[group_num++] = &in3_attr_group;
1679 }
1680 if (data->has_voltage & (1 << 4)) {
1681 data->groups[group_num++] = &in4_attr_group;
1682 }
1683 if (data->has_voltage & (1 << 5)) {
1684 data->groups[group_num++] = &in5_attr_group;
1685 }
1686 if (data->has_vid) {
1687 data->vrm = vid_which_vrm();
1688 data->groups[group_num] = &vid_attr_group;
1689 }
1690
1691 /* register device with all the acquired attributes */
1692 hwmon_dev = devm_hwmon_device_register_with_groups(&client->dev,
1693 client->name, data,
1694 data->groups);
1695
1696 if (IS_ERR(hwmon_dev)) {
1697 ret = PTR_ERR(hwmon_dev);
1698 return ret;
1699 }
1700
1701 dev_info(&client->dev, "%s device, revision %d\n",
1702 names[id->driver_data], revision);
1703 if ((data->has_voltage & 0x11) || data->has_fan4 || data->has_pwm2)
1704 dev_info(&client->dev, "Optional features:%s%s%s%s%s\n",
1705 (data->has_voltage & (1 << 0)) ? " in0" : "",
1706 (data->has_voltage & (1 << 4)) ? " in4" : "",
1707 data->has_fan4 ? " fan4" : "",
1708 data->has_pwm2 ? " pwm2" : "",
1709 data->has_vid ? " vid" : "");
1710 if (data->bypass_attn)
1711 dev_info(&client->dev, "Bypassing attenuators on:%s%s%s%s\n",
1712 (data->bypass_attn & (1 << 0)) ? " in0" : "",
1713 (data->bypass_attn & (1 << 1)) ? " in1" : "",
1714 (data->bypass_attn & (1 << 3)) ? " in3" : "",
1715 (data->bypass_attn & (1 << 4)) ? " in4" : "");
1716
1717 /* Limits and settings, should never change update more than once */
1718 ret = adt7475_update_limits(client);
1719 if (ret)
1720 return ret;
1721
1722 return 0;
1723}
1724
1725static struct i2c_driver adt7475_driver = {
1726 .class = I2C_CLASS_HWMON,
1727 .driver = {
1728 .name = "adt7475",
1729 .of_match_table = of_match_ptr(adt7475_of_match),
1730 },
1731 .probe_new = adt7475_probe,
1732 .id_table = adt7475_id,
1733 .detect = adt7475_detect,
1734 .address_list = normal_i2c,
1735};
1736
1737static void adt7475_read_hystersis(struct i2c_client *client)
1738{
1739 struct adt7475_data *data = i2c_get_clientdata(client);
1740
1741 data->temp[HYSTERSIS][0] = (u16) adt7475_read(REG_REMOTE1_HYSTERSIS);
1742 data->temp[HYSTERSIS][1] = data->temp[HYSTERSIS][0];
1743 data->temp[HYSTERSIS][2] = (u16) adt7475_read(REG_REMOTE2_HYSTERSIS);
1744}
1745
1746static void adt7475_read_pwm(struct i2c_client *client, int index)
1747{
1748 struct adt7475_data *data = i2c_get_clientdata(client);
1749 unsigned int v;
1750
1751 data->pwm[CONTROL][index] = adt7475_read(PWM_CONFIG_REG(index));
1752
1753 /*
1754 * Figure out the internal value for pwmctrl and pwmchan
1755 * based on the current settings
1756 */
1757 v = (data->pwm[CONTROL][index] >> 5) & 7;
1758
1759 if (v == 3)
1760 data->pwmctl[index] = 0;
1761 else if (v == 7)
1762 data->pwmctl[index] = 1;
1763 else if (v == 4) {
1764 /*
1765 * The fan is disabled - we don't want to
1766 * support that, so change to manual mode and
1767 * set the duty cycle to 0 instead
1768 */
1769 data->pwm[INPUT][index] = 0;
1770 data->pwm[CONTROL][index] &= ~0xE0;
1771 data->pwm[CONTROL][index] |= (7 << 5);
1772
1773 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
1774 data->pwm[INPUT][index]);
1775
1776 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
1777 data->pwm[CONTROL][index]);
1778
1779 data->pwmctl[index] = 1;
1780 } else {
1781 data->pwmctl[index] = 2;
1782
1783 switch (v) {
1784 case 0:
1785 data->pwmchan[index] = 1;
1786 break;
1787 case 1:
1788 data->pwmchan[index] = 2;
1789 break;
1790 case 2:
1791 data->pwmchan[index] = 4;
1792 break;
1793 case 5:
1794 data->pwmchan[index] = 6;
1795 break;
1796 case 6:
1797 data->pwmchan[index] = 7;
1798 break;
1799 }
1800 }
1801}
1802
1803static int adt7475_update_measure(struct device *dev)
1804{
1805 struct adt7475_data *data = dev_get_drvdata(dev);
1806 struct i2c_client *client = data->client;
1807 u16 ext;
1808 int i;
1809 int ret;
1810
1811 ret = adt7475_read(REG_STATUS2);
1812 if (ret < 0)
1813 return ret;
1814 data->alarms = ret << 8;
1815
1816 ret = adt7475_read(REG_STATUS1);
1817 if (ret < 0)
1818 return ret;
1819 data->alarms |= ret;
1820
1821 ret = adt7475_read(REG_EXTEND2);
1822 if (ret < 0)
1823 return ret;
1824
1825 ext = (ret << 8);
1826
1827 ret = adt7475_read(REG_EXTEND1);
1828 if (ret < 0)
1829 return ret;
1830
1831 ext |= ret;
1832
1833 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
1834 if (!(data->has_voltage & (1 << i)))
1835 continue;
1836 ret = adt7475_read(VOLTAGE_REG(i));
1837 if (ret < 0)
1838 return ret;
1839 data->voltage[INPUT][i] =
1840 (ret << 2) |
1841 ((ext >> (i * 2)) & 3);
1842 }
1843
1844 for (i = 0; i < ADT7475_TEMP_COUNT; i++) {
1845 ret = adt7475_read(TEMP_REG(i));
1846 if (ret < 0)
1847 return ret;
1848 data->temp[INPUT][i] =
1849 (ret << 2) |
1850 ((ext >> ((i + 5) * 2)) & 3);
1851 }
1852
1853 if (data->has_voltage & (1 << 5)) {
1854 ret = adt7475_read(REG_STATUS4);
1855 if (ret < 0)
1856 return ret;
1857 data->alarms |= ret << 24;
1858
1859 ret = adt7475_read(REG_EXTEND3);
1860 if (ret < 0)
1861 return ret;
1862 ext = ret;
1863
1864 ret = adt7475_read(REG_VTT);
1865 if (ret < 0)
1866 return ret;
1867 data->voltage[INPUT][5] = ret << 2 |
1868 ((ext >> 4) & 3);
1869 }
1870
1871 for (i = 0; i < ADT7475_TACH_COUNT; i++) {
1872 if (i == 3 && !data->has_fan4)
1873 continue;
1874 ret = adt7475_read_word(client, TACH_REG(i));
1875 if (ret < 0)
1876 return ret;
1877 data->tach[INPUT][i] = ret;
1878 }
1879
1880 /* Updated by hw when in auto mode */
1881 for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1882 if (i == 1 && !data->has_pwm2)
1883 continue;
1884 ret = adt7475_read(PWM_REG(i));
1885 if (ret < 0)
1886 return ret;
1887 data->pwm[INPUT][i] = ret;
1888 }
1889
1890 if (data->has_vid) {
1891 ret = adt7475_read(REG_VID);
1892 if (ret < 0)
1893 return ret;
1894 data->vid = ret & 0x3f;
1895 }
1896
1897 return 0;
1898}
1899
1900static struct adt7475_data *adt7475_update_device(struct device *dev)
1901{
1902 struct adt7475_data *data = dev_get_drvdata(dev);
1903 int ret;
1904
1905 mutex_lock(&data->lock);
1906
1907 /* Measurement values update every 2 seconds */
1908 if (time_after(jiffies, data->measure_updated + HZ * 2) ||
1909 !data->valid) {
1910 ret = adt7475_update_measure(dev);
1911 if (ret) {
1912 data->valid = false;
1913 mutex_unlock(&data->lock);
1914 return ERR_PTR(ret);
1915 }
1916 data->measure_updated = jiffies;
1917 data->valid = true;
1918 }
1919
1920 mutex_unlock(&data->lock);
1921
1922 return data;
1923}
1924
1925module_i2c_driver(adt7475_driver);
1926
1927MODULE_AUTHOR("Advanced Micro Devices, Inc");
1928MODULE_DESCRIPTION("adt7475 driver");
1929MODULE_LICENSE("GPL");