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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 <jdelvare@suse.de>
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#include <linux/jiffies.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_STATUS1 0x41
62#define REG_STATUS2 0x42
63
64#define REG_VID 0x43 /* ADT7476 only */
65
66#define REG_VOLTAGE_MIN_BASE 0x44
67#define REG_VOLTAGE_MAX_BASE 0x45
68
69#define REG_TEMP_MIN_BASE 0x4E
70#define REG_TEMP_MAX_BASE 0x4F
71
72#define REG_TACH_MIN_BASE 0x54
73
74#define REG_PWM_CONFIG_BASE 0x5C
75
76#define REG_TEMP_TRANGE_BASE 0x5F
77
78#define REG_PWM_MIN_BASE 0x64
79
80#define REG_TEMP_TMIN_BASE 0x67
81#define REG_TEMP_THERM_BASE 0x6A
82
83#define REG_REMOTE1_HYSTERSIS 0x6D
84#define REG_REMOTE2_HYSTERSIS 0x6E
85
86#define REG_TEMP_OFFSET_BASE 0x70
87
88#define REG_CONFIG2 0x73
89
90#define REG_EXTEND1 0x76
91#define REG_EXTEND2 0x77
92
93#define REG_CONFIG3 0x78
94#define REG_CONFIG5 0x7C
95#define REG_CONFIG4 0x7D
96
97#define REG_STATUS4 0x81 /* ADT7490 only */
98
99#define REG_VTT_MIN 0x84 /* ADT7490 only */
100#define REG_VTT_MAX 0x86 /* ADT7490 only */
101
102#define VID_VIDSEL 0x80 /* ADT7476 only */
103
104#define CONFIG2_ATTN 0x20
105
106#define CONFIG3_SMBALERT 0x01
107#define CONFIG3_THERM 0x02
108
109#define CONFIG4_PINFUNC 0x03
110#define CONFIG4_MAXDUTY 0x08
111#define CONFIG4_ATTN_IN10 0x30
112#define CONFIG4_ATTN_IN43 0xC0
113
114#define CONFIG5_TWOSCOMP 0x01
115#define CONFIG5_TEMPOFFSET 0x02
116#define CONFIG5_VIDGPIO 0x10 /* ADT7476 only */
117
118/* ADT7475 Settings */
119
120#define ADT7475_VOLTAGE_COUNT 5 /* Not counting Vtt */
121#define ADT7475_TEMP_COUNT 3
122#define ADT7475_TACH_COUNT 4
123#define ADT7475_PWM_COUNT 3
124
125/* Macro to read the registers */
126
127#define adt7475_read(reg) i2c_smbus_read_byte_data(client, (reg))
128
129/* Macros to easily index the registers */
130
131#define TACH_REG(idx) (REG_TACH_BASE + ((idx) * 2))
132#define TACH_MIN_REG(idx) (REG_TACH_MIN_BASE + ((idx) * 2))
133
134#define PWM_REG(idx) (REG_PWM_BASE + (idx))
135#define PWM_MAX_REG(idx) (REG_PWM_MAX_BASE + (idx))
136#define PWM_MIN_REG(idx) (REG_PWM_MIN_BASE + (idx))
137#define PWM_CONFIG_REG(idx) (REG_PWM_CONFIG_BASE + (idx))
138
139#define VOLTAGE_REG(idx) (REG_VOLTAGE_BASE + (idx))
140#define VOLTAGE_MIN_REG(idx) (REG_VOLTAGE_MIN_BASE + ((idx) * 2))
141#define VOLTAGE_MAX_REG(idx) (REG_VOLTAGE_MAX_BASE + ((idx) * 2))
142
143#define TEMP_REG(idx) (REG_TEMP_BASE + (idx))
144#define TEMP_MIN_REG(idx) (REG_TEMP_MIN_BASE + ((idx) * 2))
145#define TEMP_MAX_REG(idx) (REG_TEMP_MAX_BASE + ((idx) * 2))
146#define TEMP_TMIN_REG(idx) (REG_TEMP_TMIN_BASE + (idx))
147#define TEMP_THERM_REG(idx) (REG_TEMP_THERM_BASE + (idx))
148#define TEMP_OFFSET_REG(idx) (REG_TEMP_OFFSET_BASE + (idx))
149#define TEMP_TRANGE_REG(idx) (REG_TEMP_TRANGE_BASE + (idx))
150
151static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
152
153enum chips { adt7473, adt7475, adt7476, adt7490 };
154
155static const struct i2c_device_id adt7475_id[] = {
156 { "adt7473", adt7473 },
157 { "adt7475", adt7475 },
158 { "adt7476", adt7476 },
159 { "adt7490", adt7490 },
160 { }
161};
162MODULE_DEVICE_TABLE(i2c, adt7475_id);
163
164struct adt7475_data {
165 struct device *hwmon_dev;
166 struct mutex lock;
167
168 unsigned long measure_updated;
169 unsigned long limits_updated;
170 char valid;
171
172 u8 config4;
173 u8 config5;
174 u8 has_voltage;
175 u8 bypass_attn; /* Bypass voltage attenuator */
176 u8 has_pwm2:1;
177 u8 has_fan4:1;
178 u8 has_vid:1;
179 u32 alarms;
180 u16 voltage[3][6];
181 u16 temp[7][3];
182 u16 tach[2][4];
183 u8 pwm[4][3];
184 u8 range[3];
185 u8 pwmctl[3];
186 u8 pwmchan[3];
187
188 u8 vid;
189 u8 vrm;
190};
191
192static struct i2c_driver adt7475_driver;
193static struct adt7475_data *adt7475_update_device(struct device *dev);
194static void adt7475_read_hystersis(struct i2c_client *client);
195static void adt7475_read_pwm(struct i2c_client *client, int index);
196
197/* Given a temp value, convert it to register value */
198
199static inline u16 temp2reg(struct adt7475_data *data, long val)
200{
201 u16 ret;
202
203 if (!(data->config5 & CONFIG5_TWOSCOMP)) {
204 val = clamp_val(val, -64000, 191000);
205 ret = (val + 64500) / 1000;
206 } else {
207 val = clamp_val(val, -128000, 127000);
208 if (val < -500)
209 ret = (256500 + val) / 1000;
210 else
211 ret = (val + 500) / 1000;
212 }
213
214 return ret << 2;
215}
216
217/* Given a register value, convert it to a real temp value */
218
219static inline int reg2temp(struct adt7475_data *data, u16 reg)
220{
221 if (data->config5 & CONFIG5_TWOSCOMP) {
222 if (reg >= 512)
223 return (reg - 1024) * 250;
224 else
225 return reg * 250;
226 } else
227 return (reg - 256) * 250;
228}
229
230static inline int tach2rpm(u16 tach)
231{
232 if (tach == 0 || tach == 0xFFFF)
233 return 0;
234
235 return (90000 * 60) / tach;
236}
237
238static inline u16 rpm2tach(unsigned long rpm)
239{
240 if (rpm == 0)
241 return 0;
242
243 return clamp_val((90000 * 60) / rpm, 1, 0xFFFF);
244}
245
246/* Scaling factors for voltage inputs, taken from the ADT7490 datasheet */
247static const int adt7473_in_scaling[ADT7475_VOLTAGE_COUNT + 1][2] = {
248 { 45, 94 }, /* +2.5V */
249 { 175, 525 }, /* Vccp */
250 { 68, 71 }, /* Vcc */
251 { 93, 47 }, /* +5V */
252 { 120, 20 }, /* +12V */
253 { 45, 45 }, /* Vtt */
254};
255
256static inline int reg2volt(int channel, u16 reg, u8 bypass_attn)
257{
258 const int *r = adt7473_in_scaling[channel];
259
260 if (bypass_attn & (1 << channel))
261 return DIV_ROUND_CLOSEST(reg * 2250, 1024);
262 return DIV_ROUND_CLOSEST(reg * (r[0] + r[1]) * 2250, r[1] * 1024);
263}
264
265static inline u16 volt2reg(int channel, long volt, u8 bypass_attn)
266{
267 const int *r = adt7473_in_scaling[channel];
268 long reg;
269
270 if (bypass_attn & (1 << channel))
271 reg = (volt * 1024) / 2250;
272 else
273 reg = (volt * r[1] * 1024) / ((r[0] + r[1]) * 2250);
274 return clamp_val(reg, 0, 1023) & (0xff << 2);
275}
276
277static u16 adt7475_read_word(struct i2c_client *client, int reg)
278{
279 u16 val;
280
281 val = i2c_smbus_read_byte_data(client, reg);
282 val |= (i2c_smbus_read_byte_data(client, reg + 1) << 8);
283
284 return val;
285}
286
287static void adt7475_write_word(struct i2c_client *client, int reg, u16 val)
288{
289 i2c_smbus_write_byte_data(client, reg + 1, val >> 8);
290 i2c_smbus_write_byte_data(client, reg, val & 0xFF);
291}
292
293/*
294 * Find the nearest value in a table - used for pwm frequency and
295 * auto temp range
296 */
297static int find_nearest(long val, const int *array, int size)
298{
299 int i;
300
301 if (val < array[0])
302 return 0;
303
304 if (val > array[size - 1])
305 return size - 1;
306
307 for (i = 0; i < size - 1; i++) {
308 int a, b;
309
310 if (val > array[i + 1])
311 continue;
312
313 a = val - array[i];
314 b = array[i + 1] - val;
315
316 return (a <= b) ? i : i + 1;
317 }
318
319 return 0;
320}
321
322static ssize_t show_voltage(struct device *dev, struct device_attribute *attr,
323 char *buf)
324{
325 struct adt7475_data *data = adt7475_update_device(dev);
326 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
327 unsigned short val;
328
329 switch (sattr->nr) {
330 case ALARM:
331 return sprintf(buf, "%d\n",
332 (data->alarms >> sattr->index) & 1);
333 default:
334 val = data->voltage[sattr->nr][sattr->index];
335 return sprintf(buf, "%d\n",
336 reg2volt(sattr->index, val, data->bypass_attn));
337 }
338}
339
340static ssize_t set_voltage(struct device *dev, struct device_attribute *attr,
341 const char *buf, size_t count)
342{
343
344 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
345 struct i2c_client *client = to_i2c_client(dev);
346 struct adt7475_data *data = i2c_get_clientdata(client);
347 unsigned char reg;
348 long val;
349
350 if (kstrtol(buf, 10, &val))
351 return -EINVAL;
352
353 mutex_lock(&data->lock);
354
355 data->voltage[sattr->nr][sattr->index] =
356 volt2reg(sattr->index, val, data->bypass_attn);
357
358 if (sattr->index < ADT7475_VOLTAGE_COUNT) {
359 if (sattr->nr == MIN)
360 reg = VOLTAGE_MIN_REG(sattr->index);
361 else
362 reg = VOLTAGE_MAX_REG(sattr->index);
363 } else {
364 if (sattr->nr == MIN)
365 reg = REG_VTT_MIN;
366 else
367 reg = REG_VTT_MAX;
368 }
369
370 i2c_smbus_write_byte_data(client, reg,
371 data->voltage[sattr->nr][sattr->index] >> 2);
372 mutex_unlock(&data->lock);
373
374 return count;
375}
376
377static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
378 char *buf)
379{
380 struct adt7475_data *data = adt7475_update_device(dev);
381 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
382 int out;
383
384 switch (sattr->nr) {
385 case HYSTERSIS:
386 mutex_lock(&data->lock);
387 out = data->temp[sattr->nr][sattr->index];
388 if (sattr->index != 1)
389 out = (out >> 4) & 0xF;
390 else
391 out = (out & 0xF);
392 /*
393 * Show the value as an absolute number tied to
394 * THERM
395 */
396 out = reg2temp(data, data->temp[THERM][sattr->index]) -
397 out * 1000;
398 mutex_unlock(&data->lock);
399 break;
400
401 case OFFSET:
402 /*
403 * Offset is always 2's complement, regardless of the
404 * setting in CONFIG5
405 */
406 mutex_lock(&data->lock);
407 out = (s8)data->temp[sattr->nr][sattr->index];
408 if (data->config5 & CONFIG5_TEMPOFFSET)
409 out *= 1000;
410 else
411 out *= 500;
412 mutex_unlock(&data->lock);
413 break;
414
415 case ALARM:
416 out = (data->alarms >> (sattr->index + 4)) & 1;
417 break;
418
419 case FAULT:
420 /* Note - only for remote1 and remote2 */
421 out = !!(data->alarms & (sattr->index ? 0x8000 : 0x4000));
422 break;
423
424 default:
425 /* All other temp values are in the configured format */
426 out = reg2temp(data, data->temp[sattr->nr][sattr->index]);
427 }
428
429 return sprintf(buf, "%d\n", out);
430}
431
432static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
433 const char *buf, size_t count)
434{
435 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
436 struct i2c_client *client = to_i2c_client(dev);
437 struct adt7475_data *data = i2c_get_clientdata(client);
438 unsigned char reg = 0;
439 u8 out;
440 int temp;
441 long val;
442
443 if (kstrtol(buf, 10, &val))
444 return -EINVAL;
445
446 mutex_lock(&data->lock);
447
448 /* We need the config register in all cases for temp <-> reg conv. */
449 data->config5 = adt7475_read(REG_CONFIG5);
450
451 switch (sattr->nr) {
452 case OFFSET:
453 if (data->config5 & CONFIG5_TEMPOFFSET) {
454 val = clamp_val(val, -63000, 127000);
455 out = data->temp[OFFSET][sattr->index] = val / 1000;
456 } else {
457 val = clamp_val(val, -63000, 64000);
458 out = data->temp[OFFSET][sattr->index] = val / 500;
459 }
460 break;
461
462 case HYSTERSIS:
463 /*
464 * The value will be given as an absolute value, turn it
465 * into an offset based on THERM
466 */
467
468 /* Read fresh THERM and HYSTERSIS values from the chip */
469 data->temp[THERM][sattr->index] =
470 adt7475_read(TEMP_THERM_REG(sattr->index)) << 2;
471 adt7475_read_hystersis(client);
472
473 temp = reg2temp(data, data->temp[THERM][sattr->index]);
474 val = clamp_val(val, temp - 15000, temp);
475 val = (temp - val) / 1000;
476
477 if (sattr->index != 1) {
478 data->temp[HYSTERSIS][sattr->index] &= 0xF0;
479 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF) << 4;
480 } else {
481 data->temp[HYSTERSIS][sattr->index] &= 0x0F;
482 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF);
483 }
484
485 out = data->temp[HYSTERSIS][sattr->index];
486 break;
487
488 default:
489 data->temp[sattr->nr][sattr->index] = temp2reg(data, val);
490
491 /*
492 * We maintain an extra 2 digits of precision for simplicity
493 * - shift those back off before writing the value
494 */
495 out = (u8) (data->temp[sattr->nr][sattr->index] >> 2);
496 }
497
498 switch (sattr->nr) {
499 case MIN:
500 reg = TEMP_MIN_REG(sattr->index);
501 break;
502 case MAX:
503 reg = TEMP_MAX_REG(sattr->index);
504 break;
505 case OFFSET:
506 reg = TEMP_OFFSET_REG(sattr->index);
507 break;
508 case AUTOMIN:
509 reg = TEMP_TMIN_REG(sattr->index);
510 break;
511 case THERM:
512 reg = TEMP_THERM_REG(sattr->index);
513 break;
514 case HYSTERSIS:
515 if (sattr->index != 2)
516 reg = REG_REMOTE1_HYSTERSIS;
517 else
518 reg = REG_REMOTE2_HYSTERSIS;
519
520 break;
521 }
522
523 i2c_smbus_write_byte_data(client, reg, out);
524
525 mutex_unlock(&data->lock);
526 return count;
527}
528
529/*
530 * Table of autorange values - the user will write the value in millidegrees,
531 * and we'll convert it
532 */
533static const int autorange_table[] = {
534 2000, 2500, 3330, 4000, 5000, 6670, 8000,
535 10000, 13330, 16000, 20000, 26670, 32000, 40000,
536 53330, 80000
537};
538
539static ssize_t show_point2(struct device *dev, struct device_attribute *attr,
540 char *buf)
541{
542 struct adt7475_data *data = adt7475_update_device(dev);
543 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
544 int out, val;
545
546 mutex_lock(&data->lock);
547 out = (data->range[sattr->index] >> 4) & 0x0F;
548 val = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
549 mutex_unlock(&data->lock);
550
551 return sprintf(buf, "%d\n", val + autorange_table[out]);
552}
553
554static ssize_t set_point2(struct device *dev, struct device_attribute *attr,
555 const char *buf, size_t count)
556{
557 struct i2c_client *client = to_i2c_client(dev);
558 struct adt7475_data *data = i2c_get_clientdata(client);
559 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
560 int temp;
561 long val;
562
563 if (kstrtol(buf, 10, &val))
564 return -EINVAL;
565
566 mutex_lock(&data->lock);
567
568 /* Get a fresh copy of the needed registers */
569 data->config5 = adt7475_read(REG_CONFIG5);
570 data->temp[AUTOMIN][sattr->index] =
571 adt7475_read(TEMP_TMIN_REG(sattr->index)) << 2;
572 data->range[sattr->index] =
573 adt7475_read(TEMP_TRANGE_REG(sattr->index));
574
575 /*
576 * The user will write an absolute value, so subtract the start point
577 * to figure the range
578 */
579 temp = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
580 val = clamp_val(val, temp + autorange_table[0],
581 temp + autorange_table[ARRAY_SIZE(autorange_table) - 1]);
582 val -= temp;
583
584 /* Find the nearest table entry to what the user wrote */
585 val = find_nearest(val, autorange_table, ARRAY_SIZE(autorange_table));
586
587 data->range[sattr->index] &= ~0xF0;
588 data->range[sattr->index] |= val << 4;
589
590 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
591 data->range[sattr->index]);
592
593 mutex_unlock(&data->lock);
594 return count;
595}
596
597static ssize_t show_tach(struct device *dev, struct device_attribute *attr,
598 char *buf)
599{
600 struct adt7475_data *data = adt7475_update_device(dev);
601 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
602 int out;
603
604 if (sattr->nr == ALARM)
605 out = (data->alarms >> (sattr->index + 10)) & 1;
606 else
607 out = tach2rpm(data->tach[sattr->nr][sattr->index]);
608
609 return sprintf(buf, "%d\n", out);
610}
611
612static ssize_t set_tach(struct device *dev, struct device_attribute *attr,
613 const char *buf, size_t count)
614{
615
616 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
617 struct i2c_client *client = to_i2c_client(dev);
618 struct adt7475_data *data = i2c_get_clientdata(client);
619 unsigned long val;
620
621 if (kstrtoul(buf, 10, &val))
622 return -EINVAL;
623
624 mutex_lock(&data->lock);
625
626 data->tach[MIN][sattr->index] = rpm2tach(val);
627
628 adt7475_write_word(client, TACH_MIN_REG(sattr->index),
629 data->tach[MIN][sattr->index]);
630
631 mutex_unlock(&data->lock);
632 return count;
633}
634
635static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
636 char *buf)
637{
638 struct adt7475_data *data = adt7475_update_device(dev);
639 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
640
641 return sprintf(buf, "%d\n", data->pwm[sattr->nr][sattr->index]);
642}
643
644static ssize_t show_pwmchan(struct device *dev, struct device_attribute *attr,
645 char *buf)
646{
647 struct adt7475_data *data = adt7475_update_device(dev);
648 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
649
650 return sprintf(buf, "%d\n", data->pwmchan[sattr->index]);
651}
652
653static ssize_t show_pwmctrl(struct device *dev, struct device_attribute *attr,
654 char *buf)
655{
656 struct adt7475_data *data = adt7475_update_device(dev);
657 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
658
659 return sprintf(buf, "%d\n", data->pwmctl[sattr->index]);
660}
661
662static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
663 const char *buf, size_t count)
664{
665
666 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
667 struct i2c_client *client = to_i2c_client(dev);
668 struct adt7475_data *data = i2c_get_clientdata(client);
669 unsigned char reg = 0;
670 long val;
671
672 if (kstrtol(buf, 10, &val))
673 return -EINVAL;
674
675 mutex_lock(&data->lock);
676
677 switch (sattr->nr) {
678 case INPUT:
679 /* Get a fresh value for CONTROL */
680 data->pwm[CONTROL][sattr->index] =
681 adt7475_read(PWM_CONFIG_REG(sattr->index));
682
683 /*
684 * If we are not in manual mode, then we shouldn't allow
685 * the user to set the pwm speed
686 */
687 if (((data->pwm[CONTROL][sattr->index] >> 5) & 7) != 7) {
688 mutex_unlock(&data->lock);
689 return count;
690 }
691
692 reg = PWM_REG(sattr->index);
693 break;
694
695 case MIN:
696 reg = PWM_MIN_REG(sattr->index);
697 break;
698
699 case MAX:
700 reg = PWM_MAX_REG(sattr->index);
701 break;
702 }
703
704 data->pwm[sattr->nr][sattr->index] = clamp_val(val, 0, 0xFF);
705 i2c_smbus_write_byte_data(client, reg,
706 data->pwm[sattr->nr][sattr->index]);
707
708 mutex_unlock(&data->lock);
709
710 return count;
711}
712
713/* Called by set_pwmctrl and set_pwmchan */
714
715static int hw_set_pwm(struct i2c_client *client, int index,
716 unsigned int pwmctl, unsigned int pwmchan)
717{
718 struct adt7475_data *data = i2c_get_clientdata(client);
719 long val = 0;
720
721 switch (pwmctl) {
722 case 0:
723 val = 0x03; /* Run at full speed */
724 break;
725 case 1:
726 val = 0x07; /* Manual mode */
727 break;
728 case 2:
729 switch (pwmchan) {
730 case 1:
731 /* Remote1 controls PWM */
732 val = 0x00;
733 break;
734 case 2:
735 /* local controls PWM */
736 val = 0x01;
737 break;
738 case 4:
739 /* remote2 controls PWM */
740 val = 0x02;
741 break;
742 case 6:
743 /* local/remote2 control PWM */
744 val = 0x05;
745 break;
746 case 7:
747 /* All three control PWM */
748 val = 0x06;
749 break;
750 default:
751 return -EINVAL;
752 }
753 break;
754 default:
755 return -EINVAL;
756 }
757
758 data->pwmctl[index] = pwmctl;
759 data->pwmchan[index] = pwmchan;
760
761 data->pwm[CONTROL][index] &= ~0xE0;
762 data->pwm[CONTROL][index] |= (val & 7) << 5;
763
764 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
765 data->pwm[CONTROL][index]);
766
767 return 0;
768}
769
770static ssize_t set_pwmchan(struct device *dev, struct device_attribute *attr,
771 const char *buf, size_t count)
772{
773 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
774 struct i2c_client *client = to_i2c_client(dev);
775 struct adt7475_data *data = i2c_get_clientdata(client);
776 int r;
777 long val;
778
779 if (kstrtol(buf, 10, &val))
780 return -EINVAL;
781
782 mutex_lock(&data->lock);
783 /* Read Modify Write PWM values */
784 adt7475_read_pwm(client, sattr->index);
785 r = hw_set_pwm(client, sattr->index, data->pwmctl[sattr->index], val);
786 if (r)
787 count = r;
788 mutex_unlock(&data->lock);
789
790 return count;
791}
792
793static ssize_t set_pwmctrl(struct device *dev, struct device_attribute *attr,
794 const char *buf, size_t count)
795{
796 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
797 struct i2c_client *client = to_i2c_client(dev);
798 struct adt7475_data *data = i2c_get_clientdata(client);
799 int r;
800 long val;
801
802 if (kstrtol(buf, 10, &val))
803 return -EINVAL;
804
805 mutex_lock(&data->lock);
806 /* Read Modify Write PWM values */
807 adt7475_read_pwm(client, sattr->index);
808 r = hw_set_pwm(client, sattr->index, val, data->pwmchan[sattr->index]);
809 if (r)
810 count = r;
811 mutex_unlock(&data->lock);
812
813 return count;
814}
815
816/* List of frequencies for the PWM */
817static const int pwmfreq_table[] = {
818 11, 14, 22, 29, 35, 44, 58, 88
819};
820
821static ssize_t show_pwmfreq(struct device *dev, struct device_attribute *attr,
822 char *buf)
823{
824 struct adt7475_data *data = adt7475_update_device(dev);
825 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
826
827 return sprintf(buf, "%d\n",
828 pwmfreq_table[data->range[sattr->index] & 7]);
829}
830
831static ssize_t set_pwmfreq(struct device *dev, struct device_attribute *attr,
832 const char *buf, size_t count)
833{
834 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
835 struct i2c_client *client = to_i2c_client(dev);
836 struct adt7475_data *data = i2c_get_clientdata(client);
837 int out;
838 long val;
839
840 if (kstrtol(buf, 10, &val))
841 return -EINVAL;
842
843 out = find_nearest(val, pwmfreq_table, ARRAY_SIZE(pwmfreq_table));
844
845 mutex_lock(&data->lock);
846
847 data->range[sattr->index] =
848 adt7475_read(TEMP_TRANGE_REG(sattr->index));
849 data->range[sattr->index] &= ~7;
850 data->range[sattr->index] |= out;
851
852 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
853 data->range[sattr->index]);
854
855 mutex_unlock(&data->lock);
856 return count;
857}
858
859static ssize_t show_pwm_at_crit(struct device *dev,
860 struct device_attribute *devattr, char *buf)
861{
862 struct adt7475_data *data = adt7475_update_device(dev);
863 return sprintf(buf, "%d\n", !!(data->config4 & CONFIG4_MAXDUTY));
864}
865
866static ssize_t set_pwm_at_crit(struct device *dev,
867 struct device_attribute *devattr,
868 const char *buf, size_t count)
869{
870 struct i2c_client *client = to_i2c_client(dev);
871 struct adt7475_data *data = i2c_get_clientdata(client);
872 long val;
873
874 if (kstrtol(buf, 10, &val))
875 return -EINVAL;
876 if (val != 0 && val != 1)
877 return -EINVAL;
878
879 mutex_lock(&data->lock);
880 data->config4 = i2c_smbus_read_byte_data(client, REG_CONFIG4);
881 if (val)
882 data->config4 |= CONFIG4_MAXDUTY;
883 else
884 data->config4 &= ~CONFIG4_MAXDUTY;
885 i2c_smbus_write_byte_data(client, REG_CONFIG4, data->config4);
886 mutex_unlock(&data->lock);
887
888 return count;
889}
890
891static ssize_t show_vrm(struct device *dev, struct device_attribute *devattr,
892 char *buf)
893{
894 struct adt7475_data *data = dev_get_drvdata(dev);
895 return sprintf(buf, "%d\n", (int)data->vrm);
896}
897
898static ssize_t set_vrm(struct device *dev, struct device_attribute *devattr,
899 const char *buf, size_t count)
900{
901 struct adt7475_data *data = dev_get_drvdata(dev);
902 long val;
903
904 if (kstrtol(buf, 10, &val))
905 return -EINVAL;
906 if (val < 0 || val > 255)
907 return -EINVAL;
908 data->vrm = val;
909
910 return count;
911}
912
913static ssize_t show_vid(struct device *dev, struct device_attribute *devattr,
914 char *buf)
915{
916 struct adt7475_data *data = adt7475_update_device(dev);
917 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
918}
919
920static SENSOR_DEVICE_ATTR_2(in0_input, S_IRUGO, show_voltage, NULL, INPUT, 0);
921static SENSOR_DEVICE_ATTR_2(in0_max, S_IRUGO | S_IWUSR, show_voltage,
922 set_voltage, MAX, 0);
923static SENSOR_DEVICE_ATTR_2(in0_min, S_IRUGO | S_IWUSR, show_voltage,
924 set_voltage, MIN, 0);
925static SENSOR_DEVICE_ATTR_2(in0_alarm, S_IRUGO, show_voltage, NULL, ALARM, 0);
926static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_voltage, NULL, INPUT, 1);
927static SENSOR_DEVICE_ATTR_2(in1_max, S_IRUGO | S_IWUSR, show_voltage,
928 set_voltage, MAX, 1);
929static SENSOR_DEVICE_ATTR_2(in1_min, S_IRUGO | S_IWUSR, show_voltage,
930 set_voltage, MIN, 1);
931static SENSOR_DEVICE_ATTR_2(in1_alarm, S_IRUGO, show_voltage, NULL, ALARM, 1);
932static SENSOR_DEVICE_ATTR_2(in2_input, S_IRUGO, show_voltage, NULL, INPUT, 2);
933static SENSOR_DEVICE_ATTR_2(in2_max, S_IRUGO | S_IWUSR, show_voltage,
934 set_voltage, MAX, 2);
935static SENSOR_DEVICE_ATTR_2(in2_min, S_IRUGO | S_IWUSR, show_voltage,
936 set_voltage, MIN, 2);
937static SENSOR_DEVICE_ATTR_2(in2_alarm, S_IRUGO, show_voltage, NULL, ALARM, 2);
938static SENSOR_DEVICE_ATTR_2(in3_input, S_IRUGO, show_voltage, NULL, INPUT, 3);
939static SENSOR_DEVICE_ATTR_2(in3_max, S_IRUGO | S_IWUSR, show_voltage,
940 set_voltage, MAX, 3);
941static SENSOR_DEVICE_ATTR_2(in3_min, S_IRUGO | S_IWUSR, show_voltage,
942 set_voltage, MIN, 3);
943static SENSOR_DEVICE_ATTR_2(in3_alarm, S_IRUGO, show_voltage, NULL, ALARM, 3);
944static SENSOR_DEVICE_ATTR_2(in4_input, S_IRUGO, show_voltage, NULL, INPUT, 4);
945static SENSOR_DEVICE_ATTR_2(in4_max, S_IRUGO | S_IWUSR, show_voltage,
946 set_voltage, MAX, 4);
947static SENSOR_DEVICE_ATTR_2(in4_min, S_IRUGO | S_IWUSR, show_voltage,
948 set_voltage, MIN, 4);
949static SENSOR_DEVICE_ATTR_2(in4_alarm, S_IRUGO, show_voltage, NULL, ALARM, 8);
950static SENSOR_DEVICE_ATTR_2(in5_input, S_IRUGO, show_voltage, NULL, INPUT, 5);
951static SENSOR_DEVICE_ATTR_2(in5_max, S_IRUGO | S_IWUSR, show_voltage,
952 set_voltage, MAX, 5);
953static SENSOR_DEVICE_ATTR_2(in5_min, S_IRUGO | S_IWUSR, show_voltage,
954 set_voltage, MIN, 5);
955static SENSOR_DEVICE_ATTR_2(in5_alarm, S_IRUGO, show_voltage, NULL, ALARM, 31);
956static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, INPUT, 0);
957static SENSOR_DEVICE_ATTR_2(temp1_alarm, S_IRUGO, show_temp, NULL, ALARM, 0);
958static SENSOR_DEVICE_ATTR_2(temp1_fault, S_IRUGO, show_temp, NULL, FAULT, 0);
959static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
960 MAX, 0);
961static SENSOR_DEVICE_ATTR_2(temp1_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
962 MIN, 0);
963static SENSOR_DEVICE_ATTR_2(temp1_offset, S_IRUGO | S_IWUSR, show_temp,
964 set_temp, OFFSET, 0);
965static SENSOR_DEVICE_ATTR_2(temp1_auto_point1_temp, S_IRUGO | S_IWUSR,
966 show_temp, set_temp, AUTOMIN, 0);
967static SENSOR_DEVICE_ATTR_2(temp1_auto_point2_temp, S_IRUGO | S_IWUSR,
968 show_point2, set_point2, 0, 0);
969static SENSOR_DEVICE_ATTR_2(temp1_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
970 THERM, 0);
971static SENSOR_DEVICE_ATTR_2(temp1_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
972 set_temp, HYSTERSIS, 0);
973static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, INPUT, 1);
974static SENSOR_DEVICE_ATTR_2(temp2_alarm, S_IRUGO, show_temp, NULL, ALARM, 1);
975static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
976 MAX, 1);
977static SENSOR_DEVICE_ATTR_2(temp2_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
978 MIN, 1);
979static SENSOR_DEVICE_ATTR_2(temp2_offset, S_IRUGO | S_IWUSR, show_temp,
980 set_temp, OFFSET, 1);
981static SENSOR_DEVICE_ATTR_2(temp2_auto_point1_temp, S_IRUGO | S_IWUSR,
982 show_temp, set_temp, AUTOMIN, 1);
983static SENSOR_DEVICE_ATTR_2(temp2_auto_point2_temp, S_IRUGO | S_IWUSR,
984 show_point2, set_point2, 0, 1);
985static SENSOR_DEVICE_ATTR_2(temp2_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
986 THERM, 1);
987static SENSOR_DEVICE_ATTR_2(temp2_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
988 set_temp, HYSTERSIS, 1);
989static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, INPUT, 2);
990static SENSOR_DEVICE_ATTR_2(temp3_alarm, S_IRUGO, show_temp, NULL, ALARM, 2);
991static SENSOR_DEVICE_ATTR_2(temp3_fault, S_IRUGO, show_temp, NULL, FAULT, 2);
992static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
993 MAX, 2);
994static SENSOR_DEVICE_ATTR_2(temp3_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
995 MIN, 2);
996static SENSOR_DEVICE_ATTR_2(temp3_offset, S_IRUGO | S_IWUSR, show_temp,
997 set_temp, OFFSET, 2);
998static SENSOR_DEVICE_ATTR_2(temp3_auto_point1_temp, S_IRUGO | S_IWUSR,
999 show_temp, set_temp, AUTOMIN, 2);
1000static SENSOR_DEVICE_ATTR_2(temp3_auto_point2_temp, S_IRUGO | S_IWUSR,
1001 show_point2, set_point2, 0, 2);
1002static SENSOR_DEVICE_ATTR_2(temp3_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
1003 THERM, 2);
1004static SENSOR_DEVICE_ATTR_2(temp3_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
1005 set_temp, HYSTERSIS, 2);
1006static SENSOR_DEVICE_ATTR_2(fan1_input, S_IRUGO, show_tach, NULL, INPUT, 0);
1007static SENSOR_DEVICE_ATTR_2(fan1_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
1008 MIN, 0);
1009static SENSOR_DEVICE_ATTR_2(fan1_alarm, S_IRUGO, show_tach, NULL, ALARM, 0);
1010static SENSOR_DEVICE_ATTR_2(fan2_input, S_IRUGO, show_tach, NULL, INPUT, 1);
1011static SENSOR_DEVICE_ATTR_2(fan2_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
1012 MIN, 1);
1013static SENSOR_DEVICE_ATTR_2(fan2_alarm, S_IRUGO, show_tach, NULL, ALARM, 1);
1014static SENSOR_DEVICE_ATTR_2(fan3_input, S_IRUGO, show_tach, NULL, INPUT, 2);
1015static SENSOR_DEVICE_ATTR_2(fan3_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
1016 MIN, 2);
1017static SENSOR_DEVICE_ATTR_2(fan3_alarm, S_IRUGO, show_tach, NULL, ALARM, 2);
1018static SENSOR_DEVICE_ATTR_2(fan4_input, S_IRUGO, show_tach, NULL, INPUT, 3);
1019static SENSOR_DEVICE_ATTR_2(fan4_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
1020 MIN, 3);
1021static SENSOR_DEVICE_ATTR_2(fan4_alarm, S_IRUGO, show_tach, NULL, ALARM, 3);
1022static SENSOR_DEVICE_ATTR_2(pwm1, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
1023 0);
1024static SENSOR_DEVICE_ATTR_2(pwm1_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
1025 set_pwmfreq, INPUT, 0);
1026static SENSOR_DEVICE_ATTR_2(pwm1_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
1027 set_pwmctrl, INPUT, 0);
1028static SENSOR_DEVICE_ATTR_2(pwm1_auto_channels_temp, S_IRUGO | S_IWUSR,
1029 show_pwmchan, set_pwmchan, INPUT, 0);
1030static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
1031 set_pwm, MIN, 0);
1032static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
1033 set_pwm, MAX, 0);
1034static SENSOR_DEVICE_ATTR_2(pwm2, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
1035 1);
1036static SENSOR_DEVICE_ATTR_2(pwm2_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
1037 set_pwmfreq, INPUT, 1);
1038static SENSOR_DEVICE_ATTR_2(pwm2_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
1039 set_pwmctrl, INPUT, 1);
1040static SENSOR_DEVICE_ATTR_2(pwm2_auto_channels_temp, S_IRUGO | S_IWUSR,
1041 show_pwmchan, set_pwmchan, INPUT, 1);
1042static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
1043 set_pwm, MIN, 1);
1044static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
1045 set_pwm, MAX, 1);
1046static SENSOR_DEVICE_ATTR_2(pwm3, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
1047 2);
1048static SENSOR_DEVICE_ATTR_2(pwm3_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
1049 set_pwmfreq, INPUT, 2);
1050static SENSOR_DEVICE_ATTR_2(pwm3_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
1051 set_pwmctrl, INPUT, 2);
1052static SENSOR_DEVICE_ATTR_2(pwm3_auto_channels_temp, S_IRUGO | S_IWUSR,
1053 show_pwmchan, set_pwmchan, INPUT, 2);
1054static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
1055 set_pwm, MIN, 2);
1056static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
1057 set_pwm, MAX, 2);
1058
1059/* Non-standard name, might need revisiting */
1060static DEVICE_ATTR(pwm_use_point2_pwm_at_crit, S_IWUSR | S_IRUGO,
1061 show_pwm_at_crit, set_pwm_at_crit);
1062
1063static DEVICE_ATTR(vrm, S_IWUSR | S_IRUGO, show_vrm, set_vrm);
1064static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL);
1065
1066static struct attribute *adt7475_attrs[] = {
1067 &sensor_dev_attr_in1_input.dev_attr.attr,
1068 &sensor_dev_attr_in1_max.dev_attr.attr,
1069 &sensor_dev_attr_in1_min.dev_attr.attr,
1070 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1071 &sensor_dev_attr_in2_input.dev_attr.attr,
1072 &sensor_dev_attr_in2_max.dev_attr.attr,
1073 &sensor_dev_attr_in2_min.dev_attr.attr,
1074 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1075 &sensor_dev_attr_temp1_input.dev_attr.attr,
1076 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1077 &sensor_dev_attr_temp1_fault.dev_attr.attr,
1078 &sensor_dev_attr_temp1_max.dev_attr.attr,
1079 &sensor_dev_attr_temp1_min.dev_attr.attr,
1080 &sensor_dev_attr_temp1_offset.dev_attr.attr,
1081 &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr,
1082 &sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr,
1083 &sensor_dev_attr_temp1_crit.dev_attr.attr,
1084 &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
1085 &sensor_dev_attr_temp2_input.dev_attr.attr,
1086 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1087 &sensor_dev_attr_temp2_max.dev_attr.attr,
1088 &sensor_dev_attr_temp2_min.dev_attr.attr,
1089 &sensor_dev_attr_temp2_offset.dev_attr.attr,
1090 &sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr,
1091 &sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr,
1092 &sensor_dev_attr_temp2_crit.dev_attr.attr,
1093 &sensor_dev_attr_temp2_crit_hyst.dev_attr.attr,
1094 &sensor_dev_attr_temp3_input.dev_attr.attr,
1095 &sensor_dev_attr_temp3_fault.dev_attr.attr,
1096 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1097 &sensor_dev_attr_temp3_max.dev_attr.attr,
1098 &sensor_dev_attr_temp3_min.dev_attr.attr,
1099 &sensor_dev_attr_temp3_offset.dev_attr.attr,
1100 &sensor_dev_attr_temp3_auto_point1_temp.dev_attr.attr,
1101 &sensor_dev_attr_temp3_auto_point2_temp.dev_attr.attr,
1102 &sensor_dev_attr_temp3_crit.dev_attr.attr,
1103 &sensor_dev_attr_temp3_crit_hyst.dev_attr.attr,
1104 &sensor_dev_attr_fan1_input.dev_attr.attr,
1105 &sensor_dev_attr_fan1_min.dev_attr.attr,
1106 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1107 &sensor_dev_attr_fan2_input.dev_attr.attr,
1108 &sensor_dev_attr_fan2_min.dev_attr.attr,
1109 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1110 &sensor_dev_attr_fan3_input.dev_attr.attr,
1111 &sensor_dev_attr_fan3_min.dev_attr.attr,
1112 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1113 &sensor_dev_attr_pwm1.dev_attr.attr,
1114 &sensor_dev_attr_pwm1_freq.dev_attr.attr,
1115 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1116 &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
1117 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1118 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1119 &sensor_dev_attr_pwm3.dev_attr.attr,
1120 &sensor_dev_attr_pwm3_freq.dev_attr.attr,
1121 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1122 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
1123 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1124 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1125 &dev_attr_pwm_use_point2_pwm_at_crit.attr,
1126 NULL,
1127};
1128
1129static struct attribute *fan4_attrs[] = {
1130 &sensor_dev_attr_fan4_input.dev_attr.attr,
1131 &sensor_dev_attr_fan4_min.dev_attr.attr,
1132 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1133 NULL
1134};
1135
1136static struct attribute *pwm2_attrs[] = {
1137 &sensor_dev_attr_pwm2.dev_attr.attr,
1138 &sensor_dev_attr_pwm2_freq.dev_attr.attr,
1139 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1140 &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
1141 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1142 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1143 NULL
1144};
1145
1146static struct attribute *in0_attrs[] = {
1147 &sensor_dev_attr_in0_input.dev_attr.attr,
1148 &sensor_dev_attr_in0_max.dev_attr.attr,
1149 &sensor_dev_attr_in0_min.dev_attr.attr,
1150 &sensor_dev_attr_in0_alarm.dev_attr.attr,
1151 NULL
1152};
1153
1154static struct attribute *in3_attrs[] = {
1155 &sensor_dev_attr_in3_input.dev_attr.attr,
1156 &sensor_dev_attr_in3_max.dev_attr.attr,
1157 &sensor_dev_attr_in3_min.dev_attr.attr,
1158 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1159 NULL
1160};
1161
1162static struct attribute *in4_attrs[] = {
1163 &sensor_dev_attr_in4_input.dev_attr.attr,
1164 &sensor_dev_attr_in4_max.dev_attr.attr,
1165 &sensor_dev_attr_in4_min.dev_attr.attr,
1166 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1167 NULL
1168};
1169
1170static struct attribute *in5_attrs[] = {
1171 &sensor_dev_attr_in5_input.dev_attr.attr,
1172 &sensor_dev_attr_in5_max.dev_attr.attr,
1173 &sensor_dev_attr_in5_min.dev_attr.attr,
1174 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1175 NULL
1176};
1177
1178static struct attribute *vid_attrs[] = {
1179 &dev_attr_cpu0_vid.attr,
1180 &dev_attr_vrm.attr,
1181 NULL
1182};
1183
1184static struct attribute_group adt7475_attr_group = { .attrs = adt7475_attrs };
1185static struct attribute_group fan4_attr_group = { .attrs = fan4_attrs };
1186static struct attribute_group pwm2_attr_group = { .attrs = pwm2_attrs };
1187static struct attribute_group in0_attr_group = { .attrs = in0_attrs };
1188static struct attribute_group in3_attr_group = { .attrs = in3_attrs };
1189static struct attribute_group in4_attr_group = { .attrs = in4_attrs };
1190static struct attribute_group in5_attr_group = { .attrs = in5_attrs };
1191static struct attribute_group vid_attr_group = { .attrs = vid_attrs };
1192
1193static int adt7475_detect(struct i2c_client *client,
1194 struct i2c_board_info *info)
1195{
1196 struct i2c_adapter *adapter = client->adapter;
1197 int vendid, devid, devid2;
1198 const char *name;
1199
1200 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1201 return -ENODEV;
1202
1203 vendid = adt7475_read(REG_VENDID);
1204 devid2 = adt7475_read(REG_DEVID2);
1205 if (vendid != 0x41 || /* Analog Devices */
1206 (devid2 & 0xf8) != 0x68)
1207 return -ENODEV;
1208
1209 devid = adt7475_read(REG_DEVID);
1210 if (devid == 0x73)
1211 name = "adt7473";
1212 else if (devid == 0x75 && client->addr == 0x2e)
1213 name = "adt7475";
1214 else if (devid == 0x76)
1215 name = "adt7476";
1216 else if ((devid2 & 0xfc) == 0x6c)
1217 name = "adt7490";
1218 else {
1219 dev_dbg(&adapter->dev,
1220 "Couldn't detect an ADT7473/75/76/90 part at "
1221 "0x%02x\n", (unsigned int)client->addr);
1222 return -ENODEV;
1223 }
1224
1225 strlcpy(info->type, name, I2C_NAME_SIZE);
1226
1227 return 0;
1228}
1229
1230static void adt7475_remove_files(struct i2c_client *client,
1231 struct adt7475_data *data)
1232{
1233 sysfs_remove_group(&client->dev.kobj, &adt7475_attr_group);
1234 if (data->has_fan4)
1235 sysfs_remove_group(&client->dev.kobj, &fan4_attr_group);
1236 if (data->has_pwm2)
1237 sysfs_remove_group(&client->dev.kobj, &pwm2_attr_group);
1238 if (data->has_voltage & (1 << 0))
1239 sysfs_remove_group(&client->dev.kobj, &in0_attr_group);
1240 if (data->has_voltage & (1 << 3))
1241 sysfs_remove_group(&client->dev.kobj, &in3_attr_group);
1242 if (data->has_voltage & (1 << 4))
1243 sysfs_remove_group(&client->dev.kobj, &in4_attr_group);
1244 if (data->has_voltage & (1 << 5))
1245 sysfs_remove_group(&client->dev.kobj, &in5_attr_group);
1246 if (data->has_vid)
1247 sysfs_remove_group(&client->dev.kobj, &vid_attr_group);
1248}
1249
1250static int adt7475_probe(struct i2c_client *client,
1251 const struct i2c_device_id *id)
1252{
1253 static const char * const names[] = {
1254 [adt7473] = "ADT7473",
1255 [adt7475] = "ADT7475",
1256 [adt7476] = "ADT7476",
1257 [adt7490] = "ADT7490",
1258 };
1259
1260 struct adt7475_data *data;
1261 int i, ret = 0, revision;
1262 u8 config2, config3;
1263
1264 data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
1265 if (data == NULL)
1266 return -ENOMEM;
1267
1268 mutex_init(&data->lock);
1269 i2c_set_clientdata(client, data);
1270
1271 /* Initialize device-specific values */
1272 switch (id->driver_data) {
1273 case adt7476:
1274 data->has_voltage = 0x0e; /* in1 to in3 */
1275 revision = adt7475_read(REG_DEVID2) & 0x07;
1276 break;
1277 case adt7490:
1278 data->has_voltage = 0x3e; /* in1 to in5 */
1279 revision = adt7475_read(REG_DEVID2) & 0x03;
1280 if (revision == 0x03)
1281 revision += adt7475_read(REG_DEVREV2);
1282 break;
1283 default:
1284 data->has_voltage = 0x06; /* in1, in2 */
1285 revision = adt7475_read(REG_DEVID2) & 0x07;
1286 }
1287
1288 config3 = adt7475_read(REG_CONFIG3);
1289 /* Pin PWM2 may alternatively be used for ALERT output */
1290 if (!(config3 & CONFIG3_SMBALERT))
1291 data->has_pwm2 = 1;
1292 /* Meaning of this bit is inverted for the ADT7473-1 */
1293 if (id->driver_data == adt7473 && revision >= 1)
1294 data->has_pwm2 = !data->has_pwm2;
1295
1296 data->config4 = adt7475_read(REG_CONFIG4);
1297 /* Pin TACH4 may alternatively be used for THERM */
1298 if ((data->config4 & CONFIG4_PINFUNC) == 0x0)
1299 data->has_fan4 = 1;
1300
1301 /*
1302 * THERM configuration is more complex on the ADT7476 and ADT7490,
1303 * because 2 different pins (TACH4 and +2.5 Vin) can be used for
1304 * this function
1305 */
1306 if (id->driver_data == adt7490) {
1307 if ((data->config4 & CONFIG4_PINFUNC) == 0x1 &&
1308 !(config3 & CONFIG3_THERM))
1309 data->has_fan4 = 1;
1310 }
1311 if (id->driver_data == adt7476 || id->driver_data == adt7490) {
1312 if (!(config3 & CONFIG3_THERM) ||
1313 (data->config4 & CONFIG4_PINFUNC) == 0x1)
1314 data->has_voltage |= (1 << 0); /* in0 */
1315 }
1316
1317 /*
1318 * On the ADT7476, the +12V input pin may instead be used as VID5,
1319 * and VID pins may alternatively be used as GPIO
1320 */
1321 if (id->driver_data == adt7476) {
1322 u8 vid = adt7475_read(REG_VID);
1323 if (!(vid & VID_VIDSEL))
1324 data->has_voltage |= (1 << 4); /* in4 */
1325
1326 data->has_vid = !(adt7475_read(REG_CONFIG5) & CONFIG5_VIDGPIO);
1327 }
1328
1329 /* Voltage attenuators can be bypassed, globally or individually */
1330 config2 = adt7475_read(REG_CONFIG2);
1331 if (config2 & CONFIG2_ATTN) {
1332 data->bypass_attn = (0x3 << 3) | 0x3;
1333 } else {
1334 data->bypass_attn = ((data->config4 & CONFIG4_ATTN_IN10) >> 4) |
1335 ((data->config4 & CONFIG4_ATTN_IN43) >> 3);
1336 }
1337 data->bypass_attn &= data->has_voltage;
1338
1339 /*
1340 * Call adt7475_read_pwm for all pwm's as this will reprogram any
1341 * pwm's which are disabled to manual mode with 0% duty cycle
1342 */
1343 for (i = 0; i < ADT7475_PWM_COUNT; i++)
1344 adt7475_read_pwm(client, i);
1345
1346 ret = sysfs_create_group(&client->dev.kobj, &adt7475_attr_group);
1347 if (ret)
1348 return ret;
1349
1350 /* Features that can be disabled individually */
1351 if (data->has_fan4) {
1352 ret = sysfs_create_group(&client->dev.kobj, &fan4_attr_group);
1353 if (ret)
1354 goto eremove;
1355 }
1356 if (data->has_pwm2) {
1357 ret = sysfs_create_group(&client->dev.kobj, &pwm2_attr_group);
1358 if (ret)
1359 goto eremove;
1360 }
1361 if (data->has_voltage & (1 << 0)) {
1362 ret = sysfs_create_group(&client->dev.kobj, &in0_attr_group);
1363 if (ret)
1364 goto eremove;
1365 }
1366 if (data->has_voltage & (1 << 3)) {
1367 ret = sysfs_create_group(&client->dev.kobj, &in3_attr_group);
1368 if (ret)
1369 goto eremove;
1370 }
1371 if (data->has_voltage & (1 << 4)) {
1372 ret = sysfs_create_group(&client->dev.kobj, &in4_attr_group);
1373 if (ret)
1374 goto eremove;
1375 }
1376 if (data->has_voltage & (1 << 5)) {
1377 ret = sysfs_create_group(&client->dev.kobj, &in5_attr_group);
1378 if (ret)
1379 goto eremove;
1380 }
1381 if (data->has_vid) {
1382 data->vrm = vid_which_vrm();
1383 ret = sysfs_create_group(&client->dev.kobj, &vid_attr_group);
1384 if (ret)
1385 goto eremove;
1386 }
1387
1388 data->hwmon_dev = hwmon_device_register(&client->dev);
1389 if (IS_ERR(data->hwmon_dev)) {
1390 ret = PTR_ERR(data->hwmon_dev);
1391 goto eremove;
1392 }
1393
1394 dev_info(&client->dev, "%s device, revision %d\n",
1395 names[id->driver_data], revision);
1396 if ((data->has_voltage & 0x11) || data->has_fan4 || data->has_pwm2)
1397 dev_info(&client->dev, "Optional features:%s%s%s%s%s\n",
1398 (data->has_voltage & (1 << 0)) ? " in0" : "",
1399 (data->has_voltage & (1 << 4)) ? " in4" : "",
1400 data->has_fan4 ? " fan4" : "",
1401 data->has_pwm2 ? " pwm2" : "",
1402 data->has_vid ? " vid" : "");
1403 if (data->bypass_attn)
1404 dev_info(&client->dev, "Bypassing attenuators on:%s%s%s%s\n",
1405 (data->bypass_attn & (1 << 0)) ? " in0" : "",
1406 (data->bypass_attn & (1 << 1)) ? " in1" : "",
1407 (data->bypass_attn & (1 << 3)) ? " in3" : "",
1408 (data->bypass_attn & (1 << 4)) ? " in4" : "");
1409
1410 return 0;
1411
1412eremove:
1413 adt7475_remove_files(client, data);
1414 return ret;
1415}
1416
1417static int adt7475_remove(struct i2c_client *client)
1418{
1419 struct adt7475_data *data = i2c_get_clientdata(client);
1420
1421 hwmon_device_unregister(data->hwmon_dev);
1422 adt7475_remove_files(client, data);
1423
1424 return 0;
1425}
1426
1427static struct i2c_driver adt7475_driver = {
1428 .class = I2C_CLASS_HWMON,
1429 .driver = {
1430 .name = "adt7475",
1431 },
1432 .probe = adt7475_probe,
1433 .remove = adt7475_remove,
1434 .id_table = adt7475_id,
1435 .detect = adt7475_detect,
1436 .address_list = normal_i2c,
1437};
1438
1439static void adt7475_read_hystersis(struct i2c_client *client)
1440{
1441 struct adt7475_data *data = i2c_get_clientdata(client);
1442
1443 data->temp[HYSTERSIS][0] = (u16) adt7475_read(REG_REMOTE1_HYSTERSIS);
1444 data->temp[HYSTERSIS][1] = data->temp[HYSTERSIS][0];
1445 data->temp[HYSTERSIS][2] = (u16) adt7475_read(REG_REMOTE2_HYSTERSIS);
1446}
1447
1448static void adt7475_read_pwm(struct i2c_client *client, int index)
1449{
1450 struct adt7475_data *data = i2c_get_clientdata(client);
1451 unsigned int v;
1452
1453 data->pwm[CONTROL][index] = adt7475_read(PWM_CONFIG_REG(index));
1454
1455 /*
1456 * Figure out the internal value for pwmctrl and pwmchan
1457 * based on the current settings
1458 */
1459 v = (data->pwm[CONTROL][index] >> 5) & 7;
1460
1461 if (v == 3)
1462 data->pwmctl[index] = 0;
1463 else if (v == 7)
1464 data->pwmctl[index] = 1;
1465 else if (v == 4) {
1466 /*
1467 * The fan is disabled - we don't want to
1468 * support that, so change to manual mode and
1469 * set the duty cycle to 0 instead
1470 */
1471 data->pwm[INPUT][index] = 0;
1472 data->pwm[CONTROL][index] &= ~0xE0;
1473 data->pwm[CONTROL][index] |= (7 << 5);
1474
1475 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
1476 data->pwm[INPUT][index]);
1477
1478 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
1479 data->pwm[CONTROL][index]);
1480
1481 data->pwmctl[index] = 1;
1482 } else {
1483 data->pwmctl[index] = 2;
1484
1485 switch (v) {
1486 case 0:
1487 data->pwmchan[index] = 1;
1488 break;
1489 case 1:
1490 data->pwmchan[index] = 2;
1491 break;
1492 case 2:
1493 data->pwmchan[index] = 4;
1494 break;
1495 case 5:
1496 data->pwmchan[index] = 6;
1497 break;
1498 case 6:
1499 data->pwmchan[index] = 7;
1500 break;
1501 }
1502 }
1503}
1504
1505static struct adt7475_data *adt7475_update_device(struct device *dev)
1506{
1507 struct i2c_client *client = to_i2c_client(dev);
1508 struct adt7475_data *data = i2c_get_clientdata(client);
1509 u16 ext;
1510 int i;
1511
1512 mutex_lock(&data->lock);
1513
1514 /* Measurement values update every 2 seconds */
1515 if (time_after(jiffies, data->measure_updated + HZ * 2) ||
1516 !data->valid) {
1517 data->alarms = adt7475_read(REG_STATUS2) << 8;
1518 data->alarms |= adt7475_read(REG_STATUS1);
1519
1520 ext = (adt7475_read(REG_EXTEND2) << 8) |
1521 adt7475_read(REG_EXTEND1);
1522 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
1523 if (!(data->has_voltage & (1 << i)))
1524 continue;
1525 data->voltage[INPUT][i] =
1526 (adt7475_read(VOLTAGE_REG(i)) << 2) |
1527 ((ext >> (i * 2)) & 3);
1528 }
1529
1530 for (i = 0; i < ADT7475_TEMP_COUNT; i++)
1531 data->temp[INPUT][i] =
1532 (adt7475_read(TEMP_REG(i)) << 2) |
1533 ((ext >> ((i + 5) * 2)) & 3);
1534
1535 if (data->has_voltage & (1 << 5)) {
1536 data->alarms |= adt7475_read(REG_STATUS4) << 24;
1537 ext = adt7475_read(REG_EXTEND3);
1538 data->voltage[INPUT][5] = adt7475_read(REG_VTT) << 2 |
1539 ((ext >> 4) & 3);
1540 }
1541
1542 for (i = 0; i < ADT7475_TACH_COUNT; i++) {
1543 if (i == 3 && !data->has_fan4)
1544 continue;
1545 data->tach[INPUT][i] =
1546 adt7475_read_word(client, TACH_REG(i));
1547 }
1548
1549 /* Updated by hw when in auto mode */
1550 for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1551 if (i == 1 && !data->has_pwm2)
1552 continue;
1553 data->pwm[INPUT][i] = adt7475_read(PWM_REG(i));
1554 }
1555
1556 if (data->has_vid)
1557 data->vid = adt7475_read(REG_VID) & 0x3f;
1558
1559 data->measure_updated = jiffies;
1560 }
1561
1562 /* Limits and settings, should never change update every 60 seconds */
1563 if (time_after(jiffies, data->limits_updated + HZ * 60) ||
1564 !data->valid) {
1565 data->config4 = adt7475_read(REG_CONFIG4);
1566 data->config5 = adt7475_read(REG_CONFIG5);
1567
1568 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
1569 if (!(data->has_voltage & (1 << i)))
1570 continue;
1571 /* Adjust values so they match the input precision */
1572 data->voltage[MIN][i] =
1573 adt7475_read(VOLTAGE_MIN_REG(i)) << 2;
1574 data->voltage[MAX][i] =
1575 adt7475_read(VOLTAGE_MAX_REG(i)) << 2;
1576 }
1577
1578 if (data->has_voltage & (1 << 5)) {
1579 data->voltage[MIN][5] = adt7475_read(REG_VTT_MIN) << 2;
1580 data->voltage[MAX][5] = adt7475_read(REG_VTT_MAX) << 2;
1581 }
1582
1583 for (i = 0; i < ADT7475_TEMP_COUNT; i++) {
1584 /* Adjust values so they match the input precision */
1585 data->temp[MIN][i] =
1586 adt7475_read(TEMP_MIN_REG(i)) << 2;
1587 data->temp[MAX][i] =
1588 adt7475_read(TEMP_MAX_REG(i)) << 2;
1589 data->temp[AUTOMIN][i] =
1590 adt7475_read(TEMP_TMIN_REG(i)) << 2;
1591 data->temp[THERM][i] =
1592 adt7475_read(TEMP_THERM_REG(i)) << 2;
1593 data->temp[OFFSET][i] =
1594 adt7475_read(TEMP_OFFSET_REG(i));
1595 }
1596 adt7475_read_hystersis(client);
1597
1598 for (i = 0; i < ADT7475_TACH_COUNT; i++) {
1599 if (i == 3 && !data->has_fan4)
1600 continue;
1601 data->tach[MIN][i] =
1602 adt7475_read_word(client, TACH_MIN_REG(i));
1603 }
1604
1605 for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1606 if (i == 1 && !data->has_pwm2)
1607 continue;
1608 data->pwm[MAX][i] = adt7475_read(PWM_MAX_REG(i));
1609 data->pwm[MIN][i] = adt7475_read(PWM_MIN_REG(i));
1610 /* Set the channel and control information */
1611 adt7475_read_pwm(client, i);
1612 }
1613
1614 data->range[0] = adt7475_read(TEMP_TRANGE_REG(0));
1615 data->range[1] = adt7475_read(TEMP_TRANGE_REG(1));
1616 data->range[2] = adt7475_read(TEMP_TRANGE_REG(2));
1617
1618 data->limits_updated = jiffies;
1619 data->valid = 1;
1620 }
1621
1622 mutex_unlock(&data->lock);
1623
1624 return data;
1625}
1626
1627module_i2c_driver(adt7475_driver);
1628
1629MODULE_AUTHOR("Advanced Micro Devices, Inc");
1630MODULE_DESCRIPTION("adt7475 driver");
1631MODULE_LICENSE("GPL");
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/init.h>
14#include <linux/slab.h>
15#include <linux/i2c.h>
16#include <linux/hwmon.h>
17#include <linux/hwmon-sysfs.h>
18#include <linux/hwmon-vid.h>
19#include <linux/err.h>
20#include <linux/jiffies.h>
21#include <linux/of.h>
22#include <linux/util_macros.h>
23
24#include <dt-bindings/pwm/pwm.h>
25
26/* Indexes for the sysfs hooks */
27enum adt_sysfs_id {
28 INPUT = 0,
29 MIN = 1,
30 MAX = 2,
31 CONTROL = 3,
32 OFFSET = 3, // Dup
33 AUTOMIN = 4,
34 THERM = 5,
35 HYSTERSIS = 6,
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 ALARM = 9,
41 FAULT = 10,
42};
43
44
45/* 7475 Common Registers */
46
47#define REG_DEVREV2 0x12 /* ADT7490 only */
48#define REG_IMON 0x1D /* ADT7490 only */
49
50#define REG_VTT 0x1E /* ADT7490 only */
51#define REG_EXTEND3 0x1F /* ADT7490 only */
52
53#define REG_VOLTAGE_BASE 0x20
54#define REG_TEMP_BASE 0x25
55#define REG_TACH_BASE 0x28
56#define REG_PWM_BASE 0x30
57#define REG_PWM_MAX_BASE 0x38
58
59#define REG_DEVID 0x3D
60#define REG_VENDID 0x3E
61#define REG_DEVID2 0x3F
62
63#define REG_CONFIG1 0x40
64
65#define REG_STATUS1 0x41
66#define REG_STATUS2 0x42
67
68#define REG_VID 0x43 /* ADT7476 only */
69
70#define REG_VOLTAGE_MIN_BASE 0x44
71#define REG_VOLTAGE_MAX_BASE 0x45
72
73#define REG_TEMP_MIN_BASE 0x4E
74#define REG_TEMP_MAX_BASE 0x4F
75
76#define REG_TACH_MIN_BASE 0x54
77
78#define REG_PWM_CONFIG_BASE 0x5C
79
80#define REG_TEMP_TRANGE_BASE 0x5F
81
82#define REG_ENHANCE_ACOUSTICS1 0x62
83#define REG_ENHANCE_ACOUSTICS2 0x63
84
85#define REG_PWM_MIN_BASE 0x64
86
87#define REG_TEMP_TMIN_BASE 0x67
88#define REG_TEMP_THERM_BASE 0x6A
89
90#define REG_REMOTE1_HYSTERSIS 0x6D
91#define REG_REMOTE2_HYSTERSIS 0x6E
92
93#define REG_TEMP_OFFSET_BASE 0x70
94
95#define REG_CONFIG2 0x73
96
97#define REG_EXTEND1 0x76
98#define REG_EXTEND2 0x77
99
100#define REG_CONFIG3 0x78
101#define REG_CONFIG5 0x7C
102#define REG_CONFIG4 0x7D
103
104#define REG_STATUS4 0x81 /* ADT7490 only */
105
106#define REG_VTT_MIN 0x84 /* ADT7490 only */
107#define REG_VTT_MAX 0x86 /* ADT7490 only */
108
109#define REG_IMON_MIN 0x85 /* ADT7490 only */
110#define REG_IMON_MAX 0x87 /* ADT7490 only */
111
112#define VID_VIDSEL 0x80 /* ADT7476 only */
113
114#define CONFIG2_ATTN 0x20
115
116#define CONFIG3_SMBALERT 0x01
117#define CONFIG3_THERM 0x02
118
119#define CONFIG4_PINFUNC 0x03
120#define CONFIG4_THERM 0x01
121#define CONFIG4_SMBALERT 0x02
122#define CONFIG4_MAXDUTY 0x08
123#define CONFIG4_ATTN_IN10 0x30
124#define CONFIG4_ATTN_IN43 0xC0
125
126#define CONFIG5_TWOSCOMP 0x01
127#define CONFIG5_TEMPOFFSET 0x02
128#define CONFIG5_VIDGPIO 0x10 /* ADT7476 only */
129
130/* ADT7475 Settings */
131
132#define ADT7475_VOLTAGE_COUNT 5 /* Not counting Vtt or Imon */
133#define ADT7475_TEMP_COUNT 3
134#define ADT7475_TACH_COUNT 4
135#define ADT7475_PWM_COUNT 3
136
137/* Macro to read the registers */
138
139#define adt7475_read(reg) i2c_smbus_read_byte_data(client, (reg))
140
141/* Macros to easily index the registers */
142
143#define TACH_REG(idx) (REG_TACH_BASE + ((idx) * 2))
144#define TACH_MIN_REG(idx) (REG_TACH_MIN_BASE + ((idx) * 2))
145
146#define PWM_REG(idx) (REG_PWM_BASE + (idx))
147#define PWM_MAX_REG(idx) (REG_PWM_MAX_BASE + (idx))
148#define PWM_MIN_REG(idx) (REG_PWM_MIN_BASE + (idx))
149#define PWM_CONFIG_REG(idx) (REG_PWM_CONFIG_BASE + (idx))
150
151#define VOLTAGE_REG(idx) (REG_VOLTAGE_BASE + (idx))
152#define VOLTAGE_MIN_REG(idx) (REG_VOLTAGE_MIN_BASE + ((idx) * 2))
153#define VOLTAGE_MAX_REG(idx) (REG_VOLTAGE_MAX_BASE + ((idx) * 2))
154
155#define TEMP_REG(idx) (REG_TEMP_BASE + (idx))
156#define TEMP_MIN_REG(idx) (REG_TEMP_MIN_BASE + ((idx) * 2))
157#define TEMP_MAX_REG(idx) (REG_TEMP_MAX_BASE + ((idx) * 2))
158#define TEMP_TMIN_REG(idx) (REG_TEMP_TMIN_BASE + (idx))
159#define TEMP_THERM_REG(idx) (REG_TEMP_THERM_BASE + (idx))
160#define TEMP_OFFSET_REG(idx) (REG_TEMP_OFFSET_BASE + (idx))
161#define TEMP_TRANGE_REG(idx) (REG_TEMP_TRANGE_BASE + (idx))
162
163static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
164
165enum chips { adt7473, adt7475, adt7476, adt7490 };
166
167static const struct i2c_device_id adt7475_id[] = {
168 { "adt7473", adt7473 },
169 { "adt7475", adt7475 },
170 { "adt7476", adt7476 },
171 { "adt7490", adt7490 },
172 { }
173};
174MODULE_DEVICE_TABLE(i2c, adt7475_id);
175
176static const struct of_device_id __maybe_unused adt7475_of_match[] = {
177 {
178 .compatible = "adi,adt7473",
179 .data = (void *)adt7473
180 },
181 {
182 .compatible = "adi,adt7475",
183 .data = (void *)adt7475
184 },
185 {
186 .compatible = "adi,adt7476",
187 .data = (void *)adt7476
188 },
189 {
190 .compatible = "adi,adt7490",
191 .data = (void *)adt7490
192 },
193 { },
194};
195MODULE_DEVICE_TABLE(of, adt7475_of_match);
196
197struct adt7475_data {
198 struct i2c_client *client;
199 struct mutex lock;
200
201 unsigned long measure_updated;
202 bool valid;
203
204 u8 config2;
205 u8 config4;
206 u8 config5;
207 u8 has_voltage;
208 u8 bypass_attn; /* Bypass voltage attenuator */
209 u8 has_pwm2:1;
210 u8 has_fan4:1;
211 u8 has_vid:1;
212 u32 alarms;
213 u16 voltage[3][7];
214 u16 temp[7][3];
215 u16 tach[2][4];
216 u8 pwm[4][3];
217 u8 range[3];
218 u8 pwmctl[3];
219 u8 pwmchan[3];
220 u8 enh_acoustics[2];
221
222 u8 vid;
223 u8 vrm;
224 const struct attribute_group *groups[10];
225};
226
227static struct i2c_driver adt7475_driver;
228static struct adt7475_data *adt7475_update_device(struct device *dev);
229static void adt7475_read_hystersis(struct i2c_client *client);
230static void adt7475_read_pwm(struct i2c_client *client, int index);
231
232/* Given a temp value, convert it to register value */
233
234static inline u16 temp2reg(struct adt7475_data *data, long val)
235{
236 u16 ret;
237
238 if (!(data->config5 & CONFIG5_TWOSCOMP)) {
239 val = clamp_val(val, -64000, 191000);
240 ret = (val + 64500) / 1000;
241 } else {
242 val = clamp_val(val, -128000, 127000);
243 if (val < -500)
244 ret = (256500 + val) / 1000;
245 else
246 ret = (val + 500) / 1000;
247 }
248
249 return ret << 2;
250}
251
252/* Given a register value, convert it to a real temp value */
253
254static inline int reg2temp(struct adt7475_data *data, u16 reg)
255{
256 if (data->config5 & CONFIG5_TWOSCOMP) {
257 if (reg >= 512)
258 return (reg - 1024) * 250;
259 else
260 return reg * 250;
261 } else
262 return (reg - 256) * 250;
263}
264
265static inline int tach2rpm(u16 tach)
266{
267 if (tach == 0 || tach == 0xFFFF)
268 return 0;
269
270 return (90000 * 60) / tach;
271}
272
273static inline u16 rpm2tach(unsigned long rpm)
274{
275 if (rpm == 0)
276 return 0;
277
278 return clamp_val((90000 * 60) / rpm, 1, 0xFFFF);
279}
280
281/* Scaling factors for voltage inputs, taken from the ADT7490 datasheet */
282static const int adt7473_in_scaling[ADT7475_VOLTAGE_COUNT + 2][2] = {
283 { 45, 94 }, /* +2.5V */
284 { 175, 525 }, /* Vccp */
285 { 68, 71 }, /* Vcc */
286 { 93, 47 }, /* +5V */
287 { 120, 20 }, /* +12V */
288 { 45, 45 }, /* Vtt */
289 { 45, 45 }, /* Imon */
290};
291
292static inline int reg2volt(int channel, u16 reg, u8 bypass_attn)
293{
294 const int *r = adt7473_in_scaling[channel];
295
296 if (bypass_attn & (1 << channel))
297 return DIV_ROUND_CLOSEST(reg * 2250, 1024);
298 return DIV_ROUND_CLOSEST(reg * (r[0] + r[1]) * 2250, r[1] * 1024);
299}
300
301static inline u16 volt2reg(int channel, long volt, u8 bypass_attn)
302{
303 const int *r = adt7473_in_scaling[channel];
304 long reg;
305
306 if (bypass_attn & (1 << channel))
307 reg = DIV_ROUND_CLOSEST(volt * 1024, 2250);
308 else
309 reg = DIV_ROUND_CLOSEST(volt * r[1] * 1024,
310 (r[0] + r[1]) * 2250);
311 return clamp_val(reg, 0, 1023) & (0xff << 2);
312}
313
314static int adt7475_read_word(struct i2c_client *client, int reg)
315{
316 int val1, val2;
317
318 val1 = i2c_smbus_read_byte_data(client, reg);
319 if (val1 < 0)
320 return val1;
321 val2 = i2c_smbus_read_byte_data(client, reg + 1);
322 if (val2 < 0)
323 return val2;
324
325 return val1 | (val2 << 8);
326}
327
328static void adt7475_write_word(struct i2c_client *client, int reg, u16 val)
329{
330 i2c_smbus_write_byte_data(client, reg + 1, val >> 8);
331 i2c_smbus_write_byte_data(client, reg, val & 0xFF);
332}
333
334static ssize_t voltage_show(struct device *dev, struct device_attribute *attr,
335 char *buf)
336{
337 struct adt7475_data *data = adt7475_update_device(dev);
338 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
339 unsigned short val;
340
341 if (IS_ERR(data))
342 return PTR_ERR(data);
343
344 switch (sattr->nr) {
345 case ALARM:
346 return sprintf(buf, "%d\n",
347 (data->alarms >> sattr->index) & 1);
348 default:
349 val = data->voltage[sattr->nr][sattr->index];
350 return sprintf(buf, "%d\n",
351 reg2volt(sattr->index, val, data->bypass_attn));
352 }
353}
354
355static ssize_t voltage_store(struct device *dev,
356 struct device_attribute *attr, const char *buf,
357 size_t count)
358{
359
360 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
361 struct adt7475_data *data = dev_get_drvdata(dev);
362 struct i2c_client *client = data->client;
363 unsigned char reg;
364 long val;
365
366 if (kstrtol(buf, 10, &val))
367 return -EINVAL;
368
369 mutex_lock(&data->lock);
370
371 data->voltage[sattr->nr][sattr->index] =
372 volt2reg(sattr->index, val, data->bypass_attn);
373
374 if (sattr->index < ADT7475_VOLTAGE_COUNT) {
375 if (sattr->nr == MIN)
376 reg = VOLTAGE_MIN_REG(sattr->index);
377 else
378 reg = VOLTAGE_MAX_REG(sattr->index);
379 } else if (sattr->index == 5) {
380 if (sattr->nr == MIN)
381 reg = REG_VTT_MIN;
382 else
383 reg = REG_VTT_MAX;
384 } else {
385 if (sattr->nr == MIN)
386 reg = REG_IMON_MIN;
387 else
388 reg = REG_IMON_MAX;
389 }
390
391 i2c_smbus_write_byte_data(client, reg,
392 data->voltage[sattr->nr][sattr->index] >> 2);
393 mutex_unlock(&data->lock);
394
395 return count;
396}
397
398static ssize_t temp_show(struct device *dev, struct device_attribute *attr,
399 char *buf)
400{
401 struct adt7475_data *data = adt7475_update_device(dev);
402 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
403 int out;
404
405 if (IS_ERR(data))
406 return PTR_ERR(data);
407
408 switch (sattr->nr) {
409 case HYSTERSIS:
410 mutex_lock(&data->lock);
411 out = data->temp[sattr->nr][sattr->index];
412 if (sattr->index != 1)
413 out = (out >> 4) & 0xF;
414 else
415 out = (out & 0xF);
416 /*
417 * Show the value as an absolute number tied to
418 * THERM
419 */
420 out = reg2temp(data, data->temp[THERM][sattr->index]) -
421 out * 1000;
422 mutex_unlock(&data->lock);
423 break;
424
425 case OFFSET:
426 /*
427 * Offset is always 2's complement, regardless of the
428 * setting in CONFIG5
429 */
430 mutex_lock(&data->lock);
431 out = (s8)data->temp[sattr->nr][sattr->index];
432 if (data->config5 & CONFIG5_TEMPOFFSET)
433 out *= 1000;
434 else
435 out *= 500;
436 mutex_unlock(&data->lock);
437 break;
438
439 case ALARM:
440 out = (data->alarms >> (sattr->index + 4)) & 1;
441 break;
442
443 case FAULT:
444 /* Note - only for remote1 and remote2 */
445 out = !!(data->alarms & (sattr->index ? 0x8000 : 0x4000));
446 break;
447
448 default:
449 /* All other temp values are in the configured format */
450 out = reg2temp(data, data->temp[sattr->nr][sattr->index]);
451 }
452
453 return sprintf(buf, "%d\n", out);
454}
455
456static ssize_t temp_store(struct device *dev, struct device_attribute *attr,
457 const char *buf, size_t count)
458{
459 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
460 struct adt7475_data *data = dev_get_drvdata(dev);
461 struct i2c_client *client = data->client;
462 unsigned char reg = 0;
463 u8 out;
464 int temp;
465 long val;
466
467 if (kstrtol(buf, 10, &val))
468 return -EINVAL;
469
470 mutex_lock(&data->lock);
471
472 /* We need the config register in all cases for temp <-> reg conv. */
473 data->config5 = adt7475_read(REG_CONFIG5);
474
475 switch (sattr->nr) {
476 case OFFSET:
477 if (data->config5 & CONFIG5_TEMPOFFSET) {
478 val = clamp_val(val, -63000, 127000);
479 out = data->temp[OFFSET][sattr->index] = val / 1000;
480 } else {
481 val = clamp_val(val, -63000, 64000);
482 out = data->temp[OFFSET][sattr->index] = val / 500;
483 }
484 break;
485
486 case HYSTERSIS:
487 /*
488 * The value will be given as an absolute value, turn it
489 * into an offset based on THERM
490 */
491
492 /* Read fresh THERM and HYSTERSIS values from the chip */
493 data->temp[THERM][sattr->index] =
494 adt7475_read(TEMP_THERM_REG(sattr->index)) << 2;
495 adt7475_read_hystersis(client);
496
497 temp = reg2temp(data, data->temp[THERM][sattr->index]);
498 val = clamp_val(val, temp - 15000, temp);
499 val = (temp - val) / 1000;
500
501 if (sattr->index != 1) {
502 data->temp[HYSTERSIS][sattr->index] &= 0x0F;
503 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF) << 4;
504 } else {
505 data->temp[HYSTERSIS][sattr->index] &= 0xF0;
506 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF);
507 }
508
509 out = data->temp[HYSTERSIS][sattr->index];
510 break;
511
512 default:
513 data->temp[sattr->nr][sattr->index] = temp2reg(data, val);
514
515 /*
516 * We maintain an extra 2 digits of precision for simplicity
517 * - shift those back off before writing the value
518 */
519 out = (u8) (data->temp[sattr->nr][sattr->index] >> 2);
520 }
521
522 switch (sattr->nr) {
523 case MIN:
524 reg = TEMP_MIN_REG(sattr->index);
525 break;
526 case MAX:
527 reg = TEMP_MAX_REG(sattr->index);
528 break;
529 case OFFSET:
530 reg = TEMP_OFFSET_REG(sattr->index);
531 break;
532 case AUTOMIN:
533 reg = TEMP_TMIN_REG(sattr->index);
534 break;
535 case THERM:
536 reg = TEMP_THERM_REG(sattr->index);
537 break;
538 case HYSTERSIS:
539 if (sattr->index != 2)
540 reg = REG_REMOTE1_HYSTERSIS;
541 else
542 reg = REG_REMOTE2_HYSTERSIS;
543
544 break;
545 }
546
547 i2c_smbus_write_byte_data(client, reg, out);
548
549 mutex_unlock(&data->lock);
550 return count;
551}
552
553/* Assuming CONFIG6[SLOW] is 0 */
554static const int ad7475_st_map[] = {
555 37500, 18800, 12500, 7500, 4700, 3100, 1600, 800,
556};
557
558static ssize_t temp_st_show(struct device *dev, struct device_attribute *attr,
559 char *buf)
560{
561 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
562 struct adt7475_data *data = dev_get_drvdata(dev);
563 long val;
564
565 switch (sattr->index) {
566 case 0:
567 val = data->enh_acoustics[0] & 0xf;
568 break;
569 case 1:
570 val = data->enh_acoustics[1] & 0xf;
571 break;
572 case 2:
573 default:
574 val = (data->enh_acoustics[1] >> 4) & 0xf;
575 break;
576 }
577
578 if (val & 0x8)
579 return sprintf(buf, "%d\n", ad7475_st_map[val & 0x7]);
580 else
581 return sprintf(buf, "0\n");
582}
583
584static ssize_t temp_st_store(struct device *dev,
585 struct device_attribute *attr, const char *buf,
586 size_t count)
587{
588 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
589 struct adt7475_data *data = dev_get_drvdata(dev);
590 struct i2c_client *client = data->client;
591 unsigned char reg;
592 int shift, idx;
593 ulong val;
594
595 if (kstrtoul(buf, 10, &val))
596 return -EINVAL;
597
598 switch (sattr->index) {
599 case 0:
600 reg = REG_ENHANCE_ACOUSTICS1;
601 shift = 0;
602 idx = 0;
603 break;
604 case 1:
605 reg = REG_ENHANCE_ACOUSTICS2;
606 shift = 0;
607 idx = 1;
608 break;
609 case 2:
610 default:
611 reg = REG_ENHANCE_ACOUSTICS2;
612 shift = 4;
613 idx = 1;
614 break;
615 }
616
617 if (val > 0) {
618 val = find_closest_descending(val, ad7475_st_map,
619 ARRAY_SIZE(ad7475_st_map));
620 val |= 0x8;
621 }
622
623 mutex_lock(&data->lock);
624
625 data->enh_acoustics[idx] &= ~(0xf << shift);
626 data->enh_acoustics[idx] |= (val << shift);
627
628 i2c_smbus_write_byte_data(client, reg, data->enh_acoustics[idx]);
629
630 mutex_unlock(&data->lock);
631
632 return count;
633}
634
635/*
636 * Table of autorange values - the user will write the value in millidegrees,
637 * and we'll convert it
638 */
639static const int autorange_table[] = {
640 2000, 2500, 3330, 4000, 5000, 6670, 8000,
641 10000, 13330, 16000, 20000, 26670, 32000, 40000,
642 53330, 80000
643};
644
645static ssize_t point2_show(struct device *dev, struct device_attribute *attr,
646 char *buf)
647{
648 struct adt7475_data *data = adt7475_update_device(dev);
649 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
650 int out, val;
651
652 if (IS_ERR(data))
653 return PTR_ERR(data);
654
655 mutex_lock(&data->lock);
656 out = (data->range[sattr->index] >> 4) & 0x0F;
657 val = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
658 mutex_unlock(&data->lock);
659
660 return sprintf(buf, "%d\n", val + autorange_table[out]);
661}
662
663static ssize_t point2_store(struct device *dev, struct device_attribute *attr,
664 const char *buf, size_t count)
665{
666 struct adt7475_data *data = dev_get_drvdata(dev);
667 struct i2c_client *client = data->client;
668 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
669 int temp;
670 long val;
671
672 if (kstrtol(buf, 10, &val))
673 return -EINVAL;
674
675 mutex_lock(&data->lock);
676
677 /* Get a fresh copy of the needed registers */
678 data->config5 = adt7475_read(REG_CONFIG5);
679 data->temp[AUTOMIN][sattr->index] =
680 adt7475_read(TEMP_TMIN_REG(sattr->index)) << 2;
681 data->range[sattr->index] =
682 adt7475_read(TEMP_TRANGE_REG(sattr->index));
683
684 /*
685 * The user will write an absolute value, so subtract the start point
686 * to figure the range
687 */
688 temp = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
689 val = clamp_val(val, temp + autorange_table[0],
690 temp + autorange_table[ARRAY_SIZE(autorange_table) - 1]);
691 val -= temp;
692
693 /* Find the nearest table entry to what the user wrote */
694 val = find_closest(val, autorange_table, ARRAY_SIZE(autorange_table));
695
696 data->range[sattr->index] &= ~0xF0;
697 data->range[sattr->index] |= val << 4;
698
699 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
700 data->range[sattr->index]);
701
702 mutex_unlock(&data->lock);
703 return count;
704}
705
706static ssize_t tach_show(struct device *dev, struct device_attribute *attr,
707 char *buf)
708{
709 struct adt7475_data *data = adt7475_update_device(dev);
710 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
711 int out;
712
713 if (IS_ERR(data))
714 return PTR_ERR(data);
715
716 if (sattr->nr == ALARM)
717 out = (data->alarms >> (sattr->index + 10)) & 1;
718 else
719 out = tach2rpm(data->tach[sattr->nr][sattr->index]);
720
721 return sprintf(buf, "%d\n", out);
722}
723
724static ssize_t tach_store(struct device *dev, struct device_attribute *attr,
725 const char *buf, size_t count)
726{
727
728 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
729 struct adt7475_data *data = dev_get_drvdata(dev);
730 struct i2c_client *client = data->client;
731 unsigned long val;
732
733 if (kstrtoul(buf, 10, &val))
734 return -EINVAL;
735
736 mutex_lock(&data->lock);
737
738 data->tach[MIN][sattr->index] = rpm2tach(val);
739
740 adt7475_write_word(client, TACH_MIN_REG(sattr->index),
741 data->tach[MIN][sattr->index]);
742
743 mutex_unlock(&data->lock);
744 return count;
745}
746
747static ssize_t pwm_show(struct device *dev, struct device_attribute *attr,
748 char *buf)
749{
750 struct adt7475_data *data = adt7475_update_device(dev);
751 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
752
753 if (IS_ERR(data))
754 return PTR_ERR(data);
755
756 return sprintf(buf, "%d\n", data->pwm[sattr->nr][sattr->index]);
757}
758
759static ssize_t pwmchan_show(struct device *dev, struct device_attribute *attr,
760 char *buf)
761{
762 struct adt7475_data *data = adt7475_update_device(dev);
763 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
764
765 if (IS_ERR(data))
766 return PTR_ERR(data);
767
768 return sprintf(buf, "%d\n", data->pwmchan[sattr->index]);
769}
770
771static ssize_t pwmctrl_show(struct device *dev, struct device_attribute *attr,
772 char *buf)
773{
774 struct adt7475_data *data = adt7475_update_device(dev);
775 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
776
777 if (IS_ERR(data))
778 return PTR_ERR(data);
779
780 return sprintf(buf, "%d\n", data->pwmctl[sattr->index]);
781}
782
783static ssize_t pwm_store(struct device *dev, struct device_attribute *attr,
784 const char *buf, size_t count)
785{
786
787 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
788 struct adt7475_data *data = dev_get_drvdata(dev);
789 struct i2c_client *client = data->client;
790 unsigned char reg = 0;
791 long val;
792
793 if (kstrtol(buf, 10, &val))
794 return -EINVAL;
795
796 mutex_lock(&data->lock);
797
798 switch (sattr->nr) {
799 case INPUT:
800 /* Get a fresh value for CONTROL */
801 data->pwm[CONTROL][sattr->index] =
802 adt7475_read(PWM_CONFIG_REG(sattr->index));
803
804 /*
805 * If we are not in manual mode, then we shouldn't allow
806 * the user to set the pwm speed
807 */
808 if (((data->pwm[CONTROL][sattr->index] >> 5) & 7) != 7) {
809 mutex_unlock(&data->lock);
810 return count;
811 }
812
813 reg = PWM_REG(sattr->index);
814 break;
815
816 case MIN:
817 reg = PWM_MIN_REG(sattr->index);
818 break;
819
820 case MAX:
821 reg = PWM_MAX_REG(sattr->index);
822 break;
823 }
824
825 data->pwm[sattr->nr][sattr->index] = clamp_val(val, 0, 0xFF);
826 i2c_smbus_write_byte_data(client, reg,
827 data->pwm[sattr->nr][sattr->index]);
828 mutex_unlock(&data->lock);
829
830 return count;
831}
832
833static ssize_t stall_disable_show(struct device *dev,
834 struct device_attribute *attr, char *buf)
835{
836 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
837 struct adt7475_data *data = dev_get_drvdata(dev);
838
839 u8 mask = BIT(5 + sattr->index);
840
841 return sprintf(buf, "%d\n", !!(data->enh_acoustics[0] & mask));
842}
843
844static ssize_t stall_disable_store(struct device *dev,
845 struct device_attribute *attr,
846 const char *buf, size_t count)
847{
848 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
849 struct adt7475_data *data = dev_get_drvdata(dev);
850 struct i2c_client *client = data->client;
851 long val;
852 u8 mask = BIT(5 + sattr->index);
853
854 if (kstrtol(buf, 10, &val))
855 return -EINVAL;
856
857 mutex_lock(&data->lock);
858
859 data->enh_acoustics[0] &= ~mask;
860 if (val)
861 data->enh_acoustics[0] |= mask;
862
863 i2c_smbus_write_byte_data(client, REG_ENHANCE_ACOUSTICS1,
864 data->enh_acoustics[0]);
865
866 mutex_unlock(&data->lock);
867
868 return count;
869}
870
871/* Called by set_pwmctrl and set_pwmchan */
872
873static int hw_set_pwm(struct i2c_client *client, int index,
874 unsigned int pwmctl, unsigned int pwmchan)
875{
876 struct adt7475_data *data = i2c_get_clientdata(client);
877 long val = 0;
878
879 switch (pwmctl) {
880 case 0:
881 val = 0x03; /* Run at full speed */
882 break;
883 case 1:
884 val = 0x07; /* Manual mode */
885 break;
886 case 2:
887 switch (pwmchan) {
888 case 1:
889 /* Remote1 controls PWM */
890 val = 0x00;
891 break;
892 case 2:
893 /* local controls PWM */
894 val = 0x01;
895 break;
896 case 4:
897 /* remote2 controls PWM */
898 val = 0x02;
899 break;
900 case 6:
901 /* local/remote2 control PWM */
902 val = 0x05;
903 break;
904 case 7:
905 /* All three control PWM */
906 val = 0x06;
907 break;
908 default:
909 return -EINVAL;
910 }
911 break;
912 default:
913 return -EINVAL;
914 }
915
916 data->pwmctl[index] = pwmctl;
917 data->pwmchan[index] = pwmchan;
918
919 data->pwm[CONTROL][index] &= ~0xE0;
920 data->pwm[CONTROL][index] |= (val & 7) << 5;
921
922 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
923 data->pwm[CONTROL][index]);
924
925 return 0;
926}
927
928static ssize_t pwmchan_store(struct device *dev,
929 struct device_attribute *attr, const char *buf,
930 size_t count)
931{
932 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
933 struct adt7475_data *data = dev_get_drvdata(dev);
934 struct i2c_client *client = data->client;
935 int r;
936 long val;
937
938 if (kstrtol(buf, 10, &val))
939 return -EINVAL;
940
941 mutex_lock(&data->lock);
942 /* Read Modify Write PWM values */
943 adt7475_read_pwm(client, sattr->index);
944 r = hw_set_pwm(client, sattr->index, data->pwmctl[sattr->index], val);
945 if (r)
946 count = r;
947 mutex_unlock(&data->lock);
948
949 return count;
950}
951
952static ssize_t pwmctrl_store(struct device *dev,
953 struct device_attribute *attr, const char *buf,
954 size_t count)
955{
956 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
957 struct adt7475_data *data = dev_get_drvdata(dev);
958 struct i2c_client *client = data->client;
959 int r;
960 long val;
961
962 if (kstrtol(buf, 10, &val))
963 return -EINVAL;
964
965 mutex_lock(&data->lock);
966 /* Read Modify Write PWM values */
967 adt7475_read_pwm(client, sattr->index);
968 r = hw_set_pwm(client, sattr->index, val, data->pwmchan[sattr->index]);
969 if (r)
970 count = r;
971 mutex_unlock(&data->lock);
972
973 return count;
974}
975
976/* List of frequencies for the PWM */
977static const int pwmfreq_table[] = {
978 11, 14, 22, 29, 35, 44, 58, 88, 22500
979};
980
981static ssize_t pwmfreq_show(struct device *dev, struct device_attribute *attr,
982 char *buf)
983{
984 struct adt7475_data *data = adt7475_update_device(dev);
985 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
986 int idx;
987
988 if (IS_ERR(data))
989 return PTR_ERR(data);
990 idx = clamp_val(data->range[sattr->index] & 0xf, 0,
991 ARRAY_SIZE(pwmfreq_table) - 1);
992
993 return sprintf(buf, "%d\n", pwmfreq_table[idx]);
994}
995
996static ssize_t pwmfreq_store(struct device *dev,
997 struct device_attribute *attr, const char *buf,
998 size_t count)
999{
1000 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
1001 struct adt7475_data *data = dev_get_drvdata(dev);
1002 struct i2c_client *client = data->client;
1003 int out;
1004 long val;
1005
1006 if (kstrtol(buf, 10, &val))
1007 return -EINVAL;
1008
1009 out = find_closest(val, pwmfreq_table, ARRAY_SIZE(pwmfreq_table));
1010
1011 mutex_lock(&data->lock);
1012
1013 data->range[sattr->index] =
1014 adt7475_read(TEMP_TRANGE_REG(sattr->index));
1015 data->range[sattr->index] &= ~0xf;
1016 data->range[sattr->index] |= out;
1017
1018 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
1019 data->range[sattr->index]);
1020
1021 mutex_unlock(&data->lock);
1022 return count;
1023}
1024
1025static ssize_t pwm_use_point2_pwm_at_crit_show(struct device *dev,
1026 struct device_attribute *devattr,
1027 char *buf)
1028{
1029 struct adt7475_data *data = adt7475_update_device(dev);
1030
1031 if (IS_ERR(data))
1032 return PTR_ERR(data);
1033
1034 return sprintf(buf, "%d\n", !!(data->config4 & CONFIG4_MAXDUTY));
1035}
1036
1037static ssize_t pwm_use_point2_pwm_at_crit_store(struct device *dev,
1038 struct device_attribute *devattr,
1039 const char *buf, size_t count)
1040{
1041 struct adt7475_data *data = dev_get_drvdata(dev);
1042 struct i2c_client *client = data->client;
1043 long val;
1044
1045 if (kstrtol(buf, 10, &val))
1046 return -EINVAL;
1047 if (val != 0 && val != 1)
1048 return -EINVAL;
1049
1050 mutex_lock(&data->lock);
1051 data->config4 = i2c_smbus_read_byte_data(client, REG_CONFIG4);
1052 if (val)
1053 data->config4 |= CONFIG4_MAXDUTY;
1054 else
1055 data->config4 &= ~CONFIG4_MAXDUTY;
1056 i2c_smbus_write_byte_data(client, REG_CONFIG4, data->config4);
1057 mutex_unlock(&data->lock);
1058
1059 return count;
1060}
1061
1062static ssize_t vrm_show(struct device *dev, struct device_attribute *devattr,
1063 char *buf)
1064{
1065 struct adt7475_data *data = dev_get_drvdata(dev);
1066 return sprintf(buf, "%d\n", (int)data->vrm);
1067}
1068
1069static ssize_t vrm_store(struct device *dev, struct device_attribute *devattr,
1070 const char *buf, size_t count)
1071{
1072 struct adt7475_data *data = dev_get_drvdata(dev);
1073 long val;
1074
1075 if (kstrtol(buf, 10, &val))
1076 return -EINVAL;
1077 if (val < 0 || val > 255)
1078 return -EINVAL;
1079 data->vrm = val;
1080
1081 return count;
1082}
1083
1084static ssize_t cpu0_vid_show(struct device *dev,
1085 struct device_attribute *devattr, char *buf)
1086{
1087 struct adt7475_data *data = adt7475_update_device(dev);
1088
1089 if (IS_ERR(data))
1090 return PTR_ERR(data);
1091
1092 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
1093}
1094
1095static SENSOR_DEVICE_ATTR_2_RO(in0_input, voltage, INPUT, 0);
1096static SENSOR_DEVICE_ATTR_2_RW(in0_max, voltage, MAX, 0);
1097static SENSOR_DEVICE_ATTR_2_RW(in0_min, voltage, MIN, 0);
1098static SENSOR_DEVICE_ATTR_2_RO(in0_alarm, voltage, ALARM, 0);
1099static SENSOR_DEVICE_ATTR_2_RO(in1_input, voltage, INPUT, 1);
1100static SENSOR_DEVICE_ATTR_2_RW(in1_max, voltage, MAX, 1);
1101static SENSOR_DEVICE_ATTR_2_RW(in1_min, voltage, MIN, 1);
1102static SENSOR_DEVICE_ATTR_2_RO(in1_alarm, voltage, ALARM, 1);
1103static SENSOR_DEVICE_ATTR_2_RO(in2_input, voltage, INPUT, 2);
1104static SENSOR_DEVICE_ATTR_2_RW(in2_max, voltage, MAX, 2);
1105static SENSOR_DEVICE_ATTR_2_RW(in2_min, voltage, MIN, 2);
1106static SENSOR_DEVICE_ATTR_2_RO(in2_alarm, voltage, ALARM, 2);
1107static SENSOR_DEVICE_ATTR_2_RO(in3_input, voltage, INPUT, 3);
1108static SENSOR_DEVICE_ATTR_2_RW(in3_max, voltage, MAX, 3);
1109static SENSOR_DEVICE_ATTR_2_RW(in3_min, voltage, MIN, 3);
1110static SENSOR_DEVICE_ATTR_2_RO(in3_alarm, voltage, ALARM, 3);
1111static SENSOR_DEVICE_ATTR_2_RO(in4_input, voltage, INPUT, 4);
1112static SENSOR_DEVICE_ATTR_2_RW(in4_max, voltage, MAX, 4);
1113static SENSOR_DEVICE_ATTR_2_RW(in4_min, voltage, MIN, 4);
1114static SENSOR_DEVICE_ATTR_2_RO(in4_alarm, voltage, ALARM, 8);
1115static SENSOR_DEVICE_ATTR_2_RO(in5_input, voltage, INPUT, 5);
1116static SENSOR_DEVICE_ATTR_2_RW(in5_max, voltage, MAX, 5);
1117static SENSOR_DEVICE_ATTR_2_RW(in5_min, voltage, MIN, 5);
1118static SENSOR_DEVICE_ATTR_2_RO(in5_alarm, voltage, ALARM, 31);
1119static SENSOR_DEVICE_ATTR_2_RO(in6_input, voltage, INPUT, 6);
1120static SENSOR_DEVICE_ATTR_2_RW(in6_max, voltage, MAX, 6);
1121static SENSOR_DEVICE_ATTR_2_RW(in6_min, voltage, MIN, 6);
1122static SENSOR_DEVICE_ATTR_2_RO(in6_alarm, voltage, ALARM, 30);
1123static SENSOR_DEVICE_ATTR_2_RO(temp1_input, temp, INPUT, 0);
1124static SENSOR_DEVICE_ATTR_2_RO(temp1_alarm, temp, ALARM, 0);
1125static SENSOR_DEVICE_ATTR_2_RO(temp1_fault, temp, FAULT, 0);
1126static SENSOR_DEVICE_ATTR_2_RW(temp1_max, temp, MAX, 0);
1127static SENSOR_DEVICE_ATTR_2_RW(temp1_min, temp, MIN, 0);
1128static SENSOR_DEVICE_ATTR_2_RW(temp1_offset, temp, OFFSET, 0);
1129static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_point1_temp, temp, AUTOMIN, 0);
1130static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_point2_temp, point2, 0, 0);
1131static SENSOR_DEVICE_ATTR_2_RW(temp1_crit, temp, THERM, 0);
1132static SENSOR_DEVICE_ATTR_2_RW(temp1_crit_hyst, temp, HYSTERSIS, 0);
1133static SENSOR_DEVICE_ATTR_2_RW(temp1_smoothing, temp_st, 0, 0);
1134static SENSOR_DEVICE_ATTR_2_RO(temp2_input, temp, INPUT, 1);
1135static SENSOR_DEVICE_ATTR_2_RO(temp2_alarm, temp, ALARM, 1);
1136static SENSOR_DEVICE_ATTR_2_RW(temp2_max, temp, MAX, 1);
1137static SENSOR_DEVICE_ATTR_2_RW(temp2_min, temp, MIN, 1);
1138static SENSOR_DEVICE_ATTR_2_RW(temp2_offset, temp, OFFSET, 1);
1139static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_point1_temp, temp, AUTOMIN, 1);
1140static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_point2_temp, point2, 0, 1);
1141static SENSOR_DEVICE_ATTR_2_RW(temp2_crit, temp, THERM, 1);
1142static SENSOR_DEVICE_ATTR_2_RW(temp2_crit_hyst, temp, HYSTERSIS, 1);
1143static SENSOR_DEVICE_ATTR_2_RW(temp2_smoothing, temp_st, 0, 1);
1144static SENSOR_DEVICE_ATTR_2_RO(temp3_input, temp, INPUT, 2);
1145static SENSOR_DEVICE_ATTR_2_RO(temp3_alarm, temp, ALARM, 2);
1146static SENSOR_DEVICE_ATTR_2_RO(temp3_fault, temp, FAULT, 2);
1147static SENSOR_DEVICE_ATTR_2_RW(temp3_max, temp, MAX, 2);
1148static SENSOR_DEVICE_ATTR_2_RW(temp3_min, temp, MIN, 2);
1149static SENSOR_DEVICE_ATTR_2_RW(temp3_offset, temp, OFFSET, 2);
1150static SENSOR_DEVICE_ATTR_2_RW(temp3_auto_point1_temp, temp, AUTOMIN, 2);
1151static SENSOR_DEVICE_ATTR_2_RW(temp3_auto_point2_temp, point2, 0, 2);
1152static SENSOR_DEVICE_ATTR_2_RW(temp3_crit, temp, THERM, 2);
1153static SENSOR_DEVICE_ATTR_2_RW(temp3_crit_hyst, temp, HYSTERSIS, 2);
1154static SENSOR_DEVICE_ATTR_2_RW(temp3_smoothing, temp_st, 0, 2);
1155static SENSOR_DEVICE_ATTR_2_RO(fan1_input, tach, INPUT, 0);
1156static SENSOR_DEVICE_ATTR_2_RW(fan1_min, tach, MIN, 0);
1157static SENSOR_DEVICE_ATTR_2_RO(fan1_alarm, tach, ALARM, 0);
1158static SENSOR_DEVICE_ATTR_2_RO(fan2_input, tach, INPUT, 1);
1159static SENSOR_DEVICE_ATTR_2_RW(fan2_min, tach, MIN, 1);
1160static SENSOR_DEVICE_ATTR_2_RO(fan2_alarm, tach, ALARM, 1);
1161static SENSOR_DEVICE_ATTR_2_RO(fan3_input, tach, INPUT, 2);
1162static SENSOR_DEVICE_ATTR_2_RW(fan3_min, tach, MIN, 2);
1163static SENSOR_DEVICE_ATTR_2_RO(fan3_alarm, tach, ALARM, 2);
1164static SENSOR_DEVICE_ATTR_2_RO(fan4_input, tach, INPUT, 3);
1165static SENSOR_DEVICE_ATTR_2_RW(fan4_min, tach, MIN, 3);
1166static SENSOR_DEVICE_ATTR_2_RO(fan4_alarm, tach, ALARM, 3);
1167static SENSOR_DEVICE_ATTR_2_RW(pwm1, pwm, INPUT, 0);
1168static SENSOR_DEVICE_ATTR_2_RW(pwm1_freq, pwmfreq, INPUT, 0);
1169static SENSOR_DEVICE_ATTR_2_RW(pwm1_enable, pwmctrl, INPUT, 0);
1170static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_channels_temp, pwmchan, INPUT, 0);
1171static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point1_pwm, pwm, MIN, 0);
1172static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point2_pwm, pwm, MAX, 0);
1173static SENSOR_DEVICE_ATTR_2_RW(pwm1_stall_disable, stall_disable, 0, 0);
1174static SENSOR_DEVICE_ATTR_2_RW(pwm2, pwm, INPUT, 1);
1175static SENSOR_DEVICE_ATTR_2_RW(pwm2_freq, pwmfreq, INPUT, 1);
1176static SENSOR_DEVICE_ATTR_2_RW(pwm2_enable, pwmctrl, INPUT, 1);
1177static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_channels_temp, pwmchan, INPUT, 1);
1178static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point1_pwm, pwm, MIN, 1);
1179static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point2_pwm, pwm, MAX, 1);
1180static SENSOR_DEVICE_ATTR_2_RW(pwm2_stall_disable, stall_disable, 0, 1);
1181static SENSOR_DEVICE_ATTR_2_RW(pwm3, pwm, INPUT, 2);
1182static SENSOR_DEVICE_ATTR_2_RW(pwm3_freq, pwmfreq, INPUT, 2);
1183static SENSOR_DEVICE_ATTR_2_RW(pwm3_enable, pwmctrl, INPUT, 2);
1184static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_channels_temp, pwmchan, INPUT, 2);
1185static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point1_pwm, pwm, MIN, 2);
1186static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point2_pwm, pwm, MAX, 2);
1187static SENSOR_DEVICE_ATTR_2_RW(pwm3_stall_disable, stall_disable, 0, 2);
1188
1189/* Non-standard name, might need revisiting */
1190static DEVICE_ATTR_RW(pwm_use_point2_pwm_at_crit);
1191
1192static DEVICE_ATTR_RW(vrm);
1193static DEVICE_ATTR_RO(cpu0_vid);
1194
1195static struct attribute *adt7475_attrs[] = {
1196 &sensor_dev_attr_in1_input.dev_attr.attr,
1197 &sensor_dev_attr_in1_max.dev_attr.attr,
1198 &sensor_dev_attr_in1_min.dev_attr.attr,
1199 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1200 &sensor_dev_attr_in2_input.dev_attr.attr,
1201 &sensor_dev_attr_in2_max.dev_attr.attr,
1202 &sensor_dev_attr_in2_min.dev_attr.attr,
1203 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1204 &sensor_dev_attr_temp1_input.dev_attr.attr,
1205 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1206 &sensor_dev_attr_temp1_fault.dev_attr.attr,
1207 &sensor_dev_attr_temp1_max.dev_attr.attr,
1208 &sensor_dev_attr_temp1_min.dev_attr.attr,
1209 &sensor_dev_attr_temp1_offset.dev_attr.attr,
1210 &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr,
1211 &sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr,
1212 &sensor_dev_attr_temp1_crit.dev_attr.attr,
1213 &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
1214 &sensor_dev_attr_temp1_smoothing.dev_attr.attr,
1215 &sensor_dev_attr_temp2_input.dev_attr.attr,
1216 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1217 &sensor_dev_attr_temp2_max.dev_attr.attr,
1218 &sensor_dev_attr_temp2_min.dev_attr.attr,
1219 &sensor_dev_attr_temp2_offset.dev_attr.attr,
1220 &sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr,
1221 &sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr,
1222 &sensor_dev_attr_temp2_crit.dev_attr.attr,
1223 &sensor_dev_attr_temp2_crit_hyst.dev_attr.attr,
1224 &sensor_dev_attr_temp2_smoothing.dev_attr.attr,
1225 &sensor_dev_attr_temp3_input.dev_attr.attr,
1226 &sensor_dev_attr_temp3_fault.dev_attr.attr,
1227 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1228 &sensor_dev_attr_temp3_max.dev_attr.attr,
1229 &sensor_dev_attr_temp3_min.dev_attr.attr,
1230 &sensor_dev_attr_temp3_offset.dev_attr.attr,
1231 &sensor_dev_attr_temp3_auto_point1_temp.dev_attr.attr,
1232 &sensor_dev_attr_temp3_auto_point2_temp.dev_attr.attr,
1233 &sensor_dev_attr_temp3_crit.dev_attr.attr,
1234 &sensor_dev_attr_temp3_crit_hyst.dev_attr.attr,
1235 &sensor_dev_attr_temp3_smoothing.dev_attr.attr,
1236 &sensor_dev_attr_fan1_input.dev_attr.attr,
1237 &sensor_dev_attr_fan1_min.dev_attr.attr,
1238 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1239 &sensor_dev_attr_fan2_input.dev_attr.attr,
1240 &sensor_dev_attr_fan2_min.dev_attr.attr,
1241 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1242 &sensor_dev_attr_fan3_input.dev_attr.attr,
1243 &sensor_dev_attr_fan3_min.dev_attr.attr,
1244 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1245 &sensor_dev_attr_pwm1.dev_attr.attr,
1246 &sensor_dev_attr_pwm1_freq.dev_attr.attr,
1247 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1248 &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
1249 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1250 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1251 &sensor_dev_attr_pwm1_stall_disable.dev_attr.attr,
1252 &sensor_dev_attr_pwm3.dev_attr.attr,
1253 &sensor_dev_attr_pwm3_freq.dev_attr.attr,
1254 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1255 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
1256 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1257 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1258 &sensor_dev_attr_pwm3_stall_disable.dev_attr.attr,
1259 &dev_attr_pwm_use_point2_pwm_at_crit.attr,
1260 NULL,
1261};
1262
1263static struct attribute *fan4_attrs[] = {
1264 &sensor_dev_attr_fan4_input.dev_attr.attr,
1265 &sensor_dev_attr_fan4_min.dev_attr.attr,
1266 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1267 NULL
1268};
1269
1270static struct attribute *pwm2_attrs[] = {
1271 &sensor_dev_attr_pwm2.dev_attr.attr,
1272 &sensor_dev_attr_pwm2_freq.dev_attr.attr,
1273 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1274 &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
1275 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1276 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1277 &sensor_dev_attr_pwm2_stall_disable.dev_attr.attr,
1278 NULL
1279};
1280
1281static struct attribute *in0_attrs[] = {
1282 &sensor_dev_attr_in0_input.dev_attr.attr,
1283 &sensor_dev_attr_in0_max.dev_attr.attr,
1284 &sensor_dev_attr_in0_min.dev_attr.attr,
1285 &sensor_dev_attr_in0_alarm.dev_attr.attr,
1286 NULL
1287};
1288
1289static struct attribute *in3_attrs[] = {
1290 &sensor_dev_attr_in3_input.dev_attr.attr,
1291 &sensor_dev_attr_in3_max.dev_attr.attr,
1292 &sensor_dev_attr_in3_min.dev_attr.attr,
1293 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1294 NULL
1295};
1296
1297static struct attribute *in4_attrs[] = {
1298 &sensor_dev_attr_in4_input.dev_attr.attr,
1299 &sensor_dev_attr_in4_max.dev_attr.attr,
1300 &sensor_dev_attr_in4_min.dev_attr.attr,
1301 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1302 NULL
1303};
1304
1305static struct attribute *in5_attrs[] = {
1306 &sensor_dev_attr_in5_input.dev_attr.attr,
1307 &sensor_dev_attr_in5_max.dev_attr.attr,
1308 &sensor_dev_attr_in5_min.dev_attr.attr,
1309 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1310 NULL
1311};
1312
1313static struct attribute *in6_attrs[] = {
1314 &sensor_dev_attr_in6_input.dev_attr.attr,
1315 &sensor_dev_attr_in6_max.dev_attr.attr,
1316 &sensor_dev_attr_in6_min.dev_attr.attr,
1317 &sensor_dev_attr_in6_alarm.dev_attr.attr,
1318 NULL
1319};
1320
1321static struct attribute *vid_attrs[] = {
1322 &dev_attr_cpu0_vid.attr,
1323 &dev_attr_vrm.attr,
1324 NULL
1325};
1326
1327static const struct attribute_group adt7475_attr_group = { .attrs = adt7475_attrs };
1328static const struct attribute_group fan4_attr_group = { .attrs = fan4_attrs };
1329static const struct attribute_group pwm2_attr_group = { .attrs = pwm2_attrs };
1330static const struct attribute_group in0_attr_group = { .attrs = in0_attrs };
1331static const struct attribute_group in3_attr_group = { .attrs = in3_attrs };
1332static const struct attribute_group in4_attr_group = { .attrs = in4_attrs };
1333static const struct attribute_group in5_attr_group = { .attrs = in5_attrs };
1334static const struct attribute_group in6_attr_group = { .attrs = in6_attrs };
1335static const struct attribute_group vid_attr_group = { .attrs = vid_attrs };
1336
1337static int adt7475_detect(struct i2c_client *client,
1338 struct i2c_board_info *info)
1339{
1340 struct i2c_adapter *adapter = client->adapter;
1341 int vendid, devid, devid2;
1342 const char *name;
1343
1344 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1345 return -ENODEV;
1346
1347 vendid = adt7475_read(REG_VENDID);
1348 devid2 = adt7475_read(REG_DEVID2);
1349 if (vendid != 0x41 || /* Analog Devices */
1350 (devid2 & 0xf8) != 0x68)
1351 return -ENODEV;
1352
1353 devid = adt7475_read(REG_DEVID);
1354 if (devid == 0x73)
1355 name = "adt7473";
1356 else if (devid == 0x75 && client->addr == 0x2e)
1357 name = "adt7475";
1358 else if (devid == 0x76)
1359 name = "adt7476";
1360 else if ((devid2 & 0xfc) == 0x6c)
1361 name = "adt7490";
1362 else {
1363 dev_dbg(&adapter->dev,
1364 "Couldn't detect an ADT7473/75/76/90 part at "
1365 "0x%02x\n", (unsigned int)client->addr);
1366 return -ENODEV;
1367 }
1368
1369 strscpy(info->type, name, I2C_NAME_SIZE);
1370
1371 return 0;
1372}
1373
1374static int adt7475_update_limits(struct i2c_client *client)
1375{
1376 struct adt7475_data *data = i2c_get_clientdata(client);
1377 int i;
1378 int ret;
1379
1380 ret = adt7475_read(REG_CONFIG4);
1381 if (ret < 0)
1382 return ret;
1383 data->config4 = ret;
1384
1385 ret = adt7475_read(REG_CONFIG5);
1386 if (ret < 0)
1387 return ret;
1388 data->config5 = ret;
1389
1390 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
1391 if (!(data->has_voltage & (1 << i)))
1392 continue;
1393 /* Adjust values so they match the input precision */
1394 ret = adt7475_read(VOLTAGE_MIN_REG(i));
1395 if (ret < 0)
1396 return ret;
1397 data->voltage[MIN][i] = ret << 2;
1398
1399 ret = adt7475_read(VOLTAGE_MAX_REG(i));
1400 if (ret < 0)
1401 return ret;
1402 data->voltage[MAX][i] = ret << 2;
1403 }
1404
1405 if (data->has_voltage & (1 << 5)) {
1406 ret = adt7475_read(REG_VTT_MIN);
1407 if (ret < 0)
1408 return ret;
1409 data->voltage[MIN][5] = ret << 2;
1410
1411 ret = adt7475_read(REG_VTT_MAX);
1412 if (ret < 0)
1413 return ret;
1414 data->voltage[MAX][5] = ret << 2;
1415 }
1416
1417 if (data->has_voltage & (1 << 6)) {
1418 ret = adt7475_read(REG_IMON_MIN);
1419 if (ret < 0)
1420 return ret;
1421 data->voltage[MIN][6] = ret << 2;
1422
1423 ret = adt7475_read(REG_IMON_MAX);
1424 if (ret < 0)
1425 return ret;
1426 data->voltage[MAX][6] = ret << 2;
1427 }
1428
1429 for (i = 0; i < ADT7475_TEMP_COUNT; i++) {
1430 /* Adjust values so they match the input precision */
1431 ret = adt7475_read(TEMP_MIN_REG(i));
1432 if (ret < 0)
1433 return ret;
1434 data->temp[MIN][i] = ret << 2;
1435
1436 ret = adt7475_read(TEMP_MAX_REG(i));
1437 if (ret < 0)
1438 return ret;
1439 data->temp[MAX][i] = ret << 2;
1440
1441 ret = adt7475_read(TEMP_TMIN_REG(i));
1442 if (ret < 0)
1443 return ret;
1444 data->temp[AUTOMIN][i] = ret << 2;
1445
1446 ret = adt7475_read(TEMP_THERM_REG(i));
1447 if (ret < 0)
1448 return ret;
1449 data->temp[THERM][i] = ret << 2;
1450
1451 ret = adt7475_read(TEMP_OFFSET_REG(i));
1452 if (ret < 0)
1453 return ret;
1454 data->temp[OFFSET][i] = ret;
1455 }
1456 adt7475_read_hystersis(client);
1457
1458 for (i = 0; i < ADT7475_TACH_COUNT; i++) {
1459 if (i == 3 && !data->has_fan4)
1460 continue;
1461 ret = adt7475_read_word(client, TACH_MIN_REG(i));
1462 if (ret < 0)
1463 return ret;
1464 data->tach[MIN][i] = ret;
1465 }
1466
1467 for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1468 if (i == 1 && !data->has_pwm2)
1469 continue;
1470 ret = adt7475_read(PWM_MAX_REG(i));
1471 if (ret < 0)
1472 return ret;
1473 data->pwm[MAX][i] = ret;
1474
1475 ret = adt7475_read(PWM_MIN_REG(i));
1476 if (ret < 0)
1477 return ret;
1478 data->pwm[MIN][i] = ret;
1479 /* Set the channel and control information */
1480 adt7475_read_pwm(client, i);
1481 }
1482
1483 ret = adt7475_read(TEMP_TRANGE_REG(0));
1484 if (ret < 0)
1485 return ret;
1486 data->range[0] = ret;
1487
1488 ret = adt7475_read(TEMP_TRANGE_REG(1));
1489 if (ret < 0)
1490 return ret;
1491 data->range[1] = ret;
1492
1493 ret = adt7475_read(TEMP_TRANGE_REG(2));
1494 if (ret < 0)
1495 return ret;
1496 data->range[2] = ret;
1497
1498 return 0;
1499}
1500
1501static int load_config3(const struct i2c_client *client, const char *propname)
1502{
1503 const char *function;
1504 u8 config3;
1505 int ret;
1506
1507 ret = device_property_read_string(&client->dev, propname, &function);
1508 if (!ret) {
1509 ret = adt7475_read(REG_CONFIG3);
1510 if (ret < 0)
1511 return ret;
1512
1513 config3 = ret & ~CONFIG3_SMBALERT;
1514 if (!strcmp("pwm2", function))
1515 ;
1516 else if (!strcmp("smbalert#", function))
1517 config3 |= CONFIG3_SMBALERT;
1518 else
1519 return -EINVAL;
1520
1521 return i2c_smbus_write_byte_data(client, REG_CONFIG3, config3);
1522 }
1523
1524 return 0;
1525}
1526
1527static int load_config4(const struct i2c_client *client, const char *propname)
1528{
1529 const char *function;
1530 u8 config4;
1531 int ret;
1532
1533 ret = device_property_read_string(&client->dev, propname, &function);
1534 if (!ret) {
1535 ret = adt7475_read(REG_CONFIG4);
1536 if (ret < 0)
1537 return ret;
1538
1539 config4 = ret & ~CONFIG4_PINFUNC;
1540
1541 if (!strcmp("tach4", function))
1542 ;
1543 else if (!strcmp("therm#", function))
1544 config4 |= CONFIG4_THERM;
1545 else if (!strcmp("smbalert#", function))
1546 config4 |= CONFIG4_SMBALERT;
1547 else if (!strcmp("gpio", function))
1548 config4 |= CONFIG4_PINFUNC;
1549 else
1550 return -EINVAL;
1551
1552 return i2c_smbus_write_byte_data(client, REG_CONFIG4, config4);
1553 }
1554
1555 return 0;
1556}
1557
1558static int load_config(const struct i2c_client *client, enum chips chip)
1559{
1560 int err;
1561 const char *prop1, *prop2;
1562
1563 switch (chip) {
1564 case adt7473:
1565 case adt7475:
1566 prop1 = "adi,pin5-function";
1567 prop2 = "adi,pin9-function";
1568 break;
1569 case adt7476:
1570 case adt7490:
1571 prop1 = "adi,pin10-function";
1572 prop2 = "adi,pin14-function";
1573 break;
1574 }
1575
1576 err = load_config3(client, prop1);
1577 if (err) {
1578 dev_err(&client->dev, "failed to configure %s\n", prop1);
1579 return err;
1580 }
1581
1582 err = load_config4(client, prop2);
1583 if (err) {
1584 dev_err(&client->dev, "failed to configure %s\n", prop2);
1585 return err;
1586 }
1587
1588 return 0;
1589}
1590
1591static int set_property_bit(const struct i2c_client *client, char *property,
1592 u8 *config, u8 bit_index)
1593{
1594 u32 prop_value = 0;
1595 int ret = device_property_read_u32(&client->dev, property,
1596 &prop_value);
1597
1598 if (!ret) {
1599 if (prop_value)
1600 *config |= (1 << bit_index);
1601 else
1602 *config &= ~(1 << bit_index);
1603 }
1604
1605 return ret;
1606}
1607
1608static int load_attenuators(const struct i2c_client *client, enum chips chip,
1609 struct adt7475_data *data)
1610{
1611 switch (chip) {
1612 case adt7476:
1613 case adt7490:
1614 set_property_bit(client, "adi,bypass-attenuator-in0",
1615 &data->config4, 4);
1616 set_property_bit(client, "adi,bypass-attenuator-in1",
1617 &data->config4, 5);
1618 set_property_bit(client, "adi,bypass-attenuator-in3",
1619 &data->config4, 6);
1620 set_property_bit(client, "adi,bypass-attenuator-in4",
1621 &data->config4, 7);
1622
1623 return i2c_smbus_write_byte_data(client, REG_CONFIG4,
1624 data->config4);
1625 case adt7473:
1626 case adt7475:
1627 set_property_bit(client, "adi,bypass-attenuator-in1",
1628 &data->config2, 5);
1629
1630 return i2c_smbus_write_byte_data(client, REG_CONFIG2,
1631 data->config2);
1632 }
1633
1634 return 0;
1635}
1636
1637static int adt7475_set_pwm_polarity(struct i2c_client *client)
1638{
1639 u32 states[ADT7475_PWM_COUNT];
1640 int ret, i;
1641 u8 val;
1642
1643 ret = device_property_read_u32_array(&client->dev,
1644 "adi,pwm-active-state", states,
1645 ARRAY_SIZE(states));
1646 if (ret)
1647 return ret;
1648
1649 for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1650 ret = adt7475_read(PWM_CONFIG_REG(i));
1651 if (ret < 0)
1652 return ret;
1653 val = ret;
1654 if (states[i])
1655 val &= ~BIT(4);
1656 else
1657 val |= BIT(4);
1658
1659 ret = i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(i), val);
1660 if (ret)
1661 return ret;
1662 }
1663
1664 return 0;
1665}
1666
1667struct adt7475_pwm_config {
1668 int index;
1669 int freq;
1670 int flags;
1671 int duty;
1672};
1673
1674static int _adt7475_pwm_properties_parse_args(u32 args[4], struct adt7475_pwm_config *cfg)
1675{
1676 int freq_hz;
1677 int duty;
1678
1679 if (args[1] == 0)
1680 return -EINVAL;
1681
1682 freq_hz = 1000000000UL / args[1];
1683 if (args[3] >= args[1])
1684 duty = 255;
1685 else
1686 duty = div_u64(255ULL * args[3], args[1]);
1687
1688 cfg->index = args[0];
1689 cfg->freq = find_closest(freq_hz, pwmfreq_table, ARRAY_SIZE(pwmfreq_table));
1690 cfg->flags = args[2];
1691 cfg->duty = duty;
1692
1693 return 0;
1694}
1695
1696static int adt7475_pwm_properties_parse_reference_args(struct fwnode_handle *fwnode,
1697 struct adt7475_pwm_config *cfg)
1698{
1699 int ret, i;
1700 struct fwnode_reference_args rargs = {};
1701 u32 args[4] = {};
1702
1703 ret = fwnode_property_get_reference_args(fwnode, "pwms", "#pwm-cells", 0, 0, &rargs);
1704 if (ret)
1705 return ret;
1706
1707 if (rargs.nargs != 4) {
1708 fwnode_handle_put(rargs.fwnode);
1709 return -EINVAL;
1710 }
1711
1712 for (i = 0; i < 4; i++)
1713 args[i] = rargs.args[i];
1714
1715 ret = _adt7475_pwm_properties_parse_args(args, cfg);
1716
1717 fwnode_handle_put(rargs.fwnode);
1718
1719 return ret;
1720}
1721
1722static int adt7475_pwm_properties_parse_args(struct fwnode_handle *fwnode,
1723 struct adt7475_pwm_config *cfg)
1724{
1725 int ret;
1726 u32 args[4] = {};
1727
1728 ret = fwnode_property_read_u32_array(fwnode, "pwms", args, ARRAY_SIZE(args));
1729 if (ret)
1730 return ret;
1731
1732 return _adt7475_pwm_properties_parse_args(args, cfg);
1733}
1734
1735static int adt7475_fan_pwm_config(struct i2c_client *client)
1736{
1737 struct adt7475_data *data = i2c_get_clientdata(client);
1738 struct adt7475_pwm_config cfg = {};
1739 int ret;
1740
1741 device_for_each_child_node_scoped(&client->dev, child) {
1742 if (!fwnode_property_present(child, "pwms"))
1743 continue;
1744
1745 if (is_of_node(child))
1746 ret = adt7475_pwm_properties_parse_reference_args(child, &cfg);
1747 else
1748 ret = adt7475_pwm_properties_parse_args(child, &cfg);
1749
1750 if (cfg.index >= ADT7475_PWM_COUNT)
1751 return -EINVAL;
1752
1753 ret = adt7475_read(PWM_CONFIG_REG(cfg.index));
1754 if (ret < 0)
1755 return ret;
1756 data->pwm[CONTROL][cfg.index] = ret;
1757 if (cfg.flags & PWM_POLARITY_INVERTED)
1758 data->pwm[CONTROL][cfg.index] |= BIT(4);
1759 else
1760 data->pwm[CONTROL][cfg.index] &= ~BIT(4);
1761
1762 /* Force to manual mode so PWM values take effect */
1763 data->pwm[CONTROL][cfg.index] &= ~0xE0;
1764 data->pwm[CONTROL][cfg.index] |= 0x07 << 5;
1765
1766 ret = i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(cfg.index),
1767 data->pwm[CONTROL][cfg.index]);
1768 if (ret)
1769 return ret;
1770
1771 data->pwm[INPUT][cfg.index] = cfg.duty;
1772 ret = i2c_smbus_write_byte_data(client, PWM_REG(cfg.index),
1773 data->pwm[INPUT][cfg.index]);
1774 if (ret)
1775 return ret;
1776
1777 data->range[cfg.index] = adt7475_read(TEMP_TRANGE_REG(cfg.index));
1778 data->range[cfg.index] &= ~0xf;
1779 data->range[cfg.index] |= cfg.freq;
1780
1781 ret = i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(cfg.index),
1782 data->range[cfg.index]);
1783 if (ret)
1784 return ret;
1785 }
1786
1787 return 0;
1788}
1789
1790static int adt7475_probe(struct i2c_client *client)
1791{
1792 enum chips chip;
1793 static const char * const names[] = {
1794 [adt7473] = "ADT7473",
1795 [adt7475] = "ADT7475",
1796 [adt7476] = "ADT7476",
1797 [adt7490] = "ADT7490",
1798 };
1799
1800 struct adt7475_data *data;
1801 struct device *hwmon_dev;
1802 int i, ret = 0, revision, group_num = 0;
1803 u8 config3;
1804
1805 data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
1806 if (data == NULL)
1807 return -ENOMEM;
1808
1809 mutex_init(&data->lock);
1810 data->client = client;
1811 i2c_set_clientdata(client, data);
1812
1813 chip = (uintptr_t)i2c_get_match_data(client);
1814
1815 /* Initialize device-specific values */
1816 switch (chip) {
1817 case adt7476:
1818 data->has_voltage = 0x0e; /* in1 to in3 */
1819 revision = adt7475_read(REG_DEVID2) & 0x07;
1820 break;
1821 case adt7490:
1822 data->has_voltage = 0x7e; /* in1 to in6 */
1823 revision = adt7475_read(REG_DEVID2) & 0x03;
1824 if (revision == 0x03)
1825 revision += adt7475_read(REG_DEVREV2);
1826 break;
1827 default:
1828 data->has_voltage = 0x06; /* in1, in2 */
1829 revision = adt7475_read(REG_DEVID2) & 0x07;
1830 }
1831
1832 ret = load_config(client, chip);
1833 if (ret)
1834 return ret;
1835
1836 config3 = adt7475_read(REG_CONFIG3);
1837 /* Pin PWM2 may alternatively be used for ALERT output */
1838 if (!(config3 & CONFIG3_SMBALERT))
1839 data->has_pwm2 = 1;
1840 /* Meaning of this bit is inverted for the ADT7473-1 */
1841 if (chip == adt7473 && revision >= 1)
1842 data->has_pwm2 = !data->has_pwm2;
1843
1844 data->config4 = adt7475_read(REG_CONFIG4);
1845 /* Pin TACH4 may alternatively be used for THERM */
1846 if ((data->config4 & CONFIG4_PINFUNC) == 0x0)
1847 data->has_fan4 = 1;
1848
1849 /*
1850 * THERM configuration is more complex on the ADT7476 and ADT7490,
1851 * because 2 different pins (TACH4 and +2.5 Vin) can be used for
1852 * this function
1853 */
1854 if (chip == adt7490) {
1855 if ((data->config4 & CONFIG4_PINFUNC) == 0x1 &&
1856 !(config3 & CONFIG3_THERM))
1857 data->has_fan4 = 1;
1858 }
1859 if (chip == adt7476 || chip == adt7490) {
1860 if (!(config3 & CONFIG3_THERM) ||
1861 (data->config4 & CONFIG4_PINFUNC) == 0x1)
1862 data->has_voltage |= (1 << 0); /* in0 */
1863 }
1864
1865 /*
1866 * On the ADT7476, the +12V input pin may instead be used as VID5,
1867 * and VID pins may alternatively be used as GPIO
1868 */
1869 if (chip == adt7476) {
1870 u8 vid = adt7475_read(REG_VID);
1871 if (!(vid & VID_VIDSEL))
1872 data->has_voltage |= (1 << 4); /* in4 */
1873
1874 data->has_vid = !(adt7475_read(REG_CONFIG5) & CONFIG5_VIDGPIO);
1875 }
1876
1877 /* Voltage attenuators can be bypassed, globally or individually */
1878 data->config2 = adt7475_read(REG_CONFIG2);
1879 ret = load_attenuators(client, chip, data);
1880 if (ret)
1881 dev_warn(&client->dev, "Error configuring attenuator bypass\n");
1882
1883 if (data->config2 & CONFIG2_ATTN) {
1884 data->bypass_attn = (0x3 << 3) | 0x3;
1885 } else {
1886 data->bypass_attn = ((data->config4 & CONFIG4_ATTN_IN10) >> 4) |
1887 ((data->config4 & CONFIG4_ATTN_IN43) >> 3);
1888 }
1889 data->bypass_attn &= data->has_voltage;
1890
1891 /*
1892 * Call adt7475_read_pwm for all pwm's as this will reprogram any
1893 * pwm's which are disabled to manual mode with 0% duty cycle
1894 */
1895 for (i = 0; i < ADT7475_PWM_COUNT; i++)
1896 adt7475_read_pwm(client, i);
1897
1898 ret = adt7475_set_pwm_polarity(client);
1899 if (ret && ret != -EINVAL)
1900 dev_warn(&client->dev, "Error configuring pwm polarity\n");
1901
1902 ret = adt7475_fan_pwm_config(client);
1903 if (ret)
1904 dev_warn(&client->dev, "Error %d configuring fan/pwm\n", ret);
1905
1906 /* Start monitoring */
1907 switch (chip) {
1908 case adt7475:
1909 case adt7476:
1910 i2c_smbus_write_byte_data(client, REG_CONFIG1,
1911 adt7475_read(REG_CONFIG1) | 0x01);
1912 break;
1913 default:
1914 break;
1915 }
1916
1917 data->groups[group_num++] = &adt7475_attr_group;
1918
1919 /* Features that can be disabled individually */
1920 if (data->has_fan4) {
1921 data->groups[group_num++] = &fan4_attr_group;
1922 }
1923 if (data->has_pwm2) {
1924 data->groups[group_num++] = &pwm2_attr_group;
1925 }
1926 if (data->has_voltage & (1 << 0)) {
1927 data->groups[group_num++] = &in0_attr_group;
1928 }
1929 if (data->has_voltage & (1 << 3)) {
1930 data->groups[group_num++] = &in3_attr_group;
1931 }
1932 if (data->has_voltage & (1 << 4)) {
1933 data->groups[group_num++] = &in4_attr_group;
1934 }
1935 if (data->has_voltage & (1 << 5)) {
1936 data->groups[group_num++] = &in5_attr_group;
1937 }
1938 if (data->has_voltage & (1 << 6)) {
1939 data->groups[group_num++] = &in6_attr_group;
1940 }
1941 if (data->has_vid) {
1942 data->vrm = vid_which_vrm();
1943 data->groups[group_num] = &vid_attr_group;
1944 }
1945
1946 /* register device with all the acquired attributes */
1947 hwmon_dev = devm_hwmon_device_register_with_groups(&client->dev,
1948 client->name, data,
1949 data->groups);
1950
1951 if (IS_ERR(hwmon_dev)) {
1952 ret = PTR_ERR(hwmon_dev);
1953 return ret;
1954 }
1955
1956 dev_info(&client->dev, "%s device, revision %d\n",
1957 names[chip], revision);
1958 if ((data->has_voltage & 0x11) || data->has_fan4 || data->has_pwm2)
1959 dev_info(&client->dev, "Optional features:%s%s%s%s%s\n",
1960 (data->has_voltage & (1 << 0)) ? " in0" : "",
1961 (data->has_voltage & (1 << 4)) ? " in4" : "",
1962 data->has_fan4 ? " fan4" : "",
1963 data->has_pwm2 ? " pwm2" : "",
1964 data->has_vid ? " vid" : "");
1965 if (data->bypass_attn)
1966 dev_info(&client->dev, "Bypassing attenuators on:%s%s%s%s\n",
1967 (data->bypass_attn & (1 << 0)) ? " in0" : "",
1968 (data->bypass_attn & (1 << 1)) ? " in1" : "",
1969 (data->bypass_attn & (1 << 3)) ? " in3" : "",
1970 (data->bypass_attn & (1 << 4)) ? " in4" : "");
1971
1972 /* Limits and settings, should never change update more than once */
1973 ret = adt7475_update_limits(client);
1974 if (ret)
1975 return ret;
1976
1977 return 0;
1978}
1979
1980static struct i2c_driver adt7475_driver = {
1981 .class = I2C_CLASS_HWMON,
1982 .driver = {
1983 .name = "adt7475",
1984 .of_match_table = of_match_ptr(adt7475_of_match),
1985 },
1986 .probe = adt7475_probe,
1987 .id_table = adt7475_id,
1988 .detect = adt7475_detect,
1989 .address_list = normal_i2c,
1990};
1991
1992static void adt7475_read_hystersis(struct i2c_client *client)
1993{
1994 struct adt7475_data *data = i2c_get_clientdata(client);
1995
1996 data->temp[HYSTERSIS][0] = (u16) adt7475_read(REG_REMOTE1_HYSTERSIS);
1997 data->temp[HYSTERSIS][1] = data->temp[HYSTERSIS][0];
1998 data->temp[HYSTERSIS][2] = (u16) adt7475_read(REG_REMOTE2_HYSTERSIS);
1999}
2000
2001static void adt7475_read_pwm(struct i2c_client *client, int index)
2002{
2003 struct adt7475_data *data = i2c_get_clientdata(client);
2004 unsigned int v;
2005
2006 data->pwm[CONTROL][index] = adt7475_read(PWM_CONFIG_REG(index));
2007
2008 /*
2009 * Figure out the internal value for pwmctrl and pwmchan
2010 * based on the current settings
2011 */
2012 v = (data->pwm[CONTROL][index] >> 5) & 7;
2013
2014 if (v == 3)
2015 data->pwmctl[index] = 0;
2016 else if (v == 7)
2017 data->pwmctl[index] = 1;
2018 else if (v == 4) {
2019 /*
2020 * The fan is disabled - we don't want to
2021 * support that, so change to manual mode and
2022 * set the duty cycle to 0 instead
2023 */
2024 data->pwm[INPUT][index] = 0;
2025 data->pwm[CONTROL][index] &= ~0xE0;
2026 data->pwm[CONTROL][index] |= (7 << 5);
2027
2028 i2c_smbus_write_byte_data(client, PWM_REG(index),
2029 data->pwm[INPUT][index]);
2030
2031 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
2032 data->pwm[CONTROL][index]);
2033
2034 data->pwmctl[index] = 1;
2035 } else {
2036 data->pwmctl[index] = 2;
2037
2038 switch (v) {
2039 case 0:
2040 data->pwmchan[index] = 1;
2041 break;
2042 case 1:
2043 data->pwmchan[index] = 2;
2044 break;
2045 case 2:
2046 data->pwmchan[index] = 4;
2047 break;
2048 case 5:
2049 data->pwmchan[index] = 6;
2050 break;
2051 case 6:
2052 data->pwmchan[index] = 7;
2053 break;
2054 }
2055 }
2056}
2057
2058static int adt7475_update_measure(struct device *dev)
2059{
2060 struct adt7475_data *data = dev_get_drvdata(dev);
2061 struct i2c_client *client = data->client;
2062 u16 ext;
2063 int i;
2064 int ret;
2065
2066 ret = adt7475_read(REG_STATUS2);
2067 if (ret < 0)
2068 return ret;
2069 data->alarms = ret << 8;
2070
2071 ret = adt7475_read(REG_STATUS1);
2072 if (ret < 0)
2073 return ret;
2074 data->alarms |= ret;
2075
2076 ret = adt7475_read(REG_EXTEND2);
2077 if (ret < 0)
2078 return ret;
2079
2080 ext = (ret << 8);
2081
2082 ret = adt7475_read(REG_EXTEND1);
2083 if (ret < 0)
2084 return ret;
2085
2086 ext |= ret;
2087
2088 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
2089 if (!(data->has_voltage & (1 << i)))
2090 continue;
2091 ret = adt7475_read(VOLTAGE_REG(i));
2092 if (ret < 0)
2093 return ret;
2094 data->voltage[INPUT][i] =
2095 (ret << 2) |
2096 ((ext >> (i * 2)) & 3);
2097 }
2098
2099 for (i = 0; i < ADT7475_TEMP_COUNT; i++) {
2100 ret = adt7475_read(TEMP_REG(i));
2101 if (ret < 0)
2102 return ret;
2103 data->temp[INPUT][i] =
2104 (ret << 2) |
2105 ((ext >> ((i + 5) * 2)) & 3);
2106 }
2107
2108 if (data->has_voltage & (1 << 5)) {
2109 ret = adt7475_read(REG_STATUS4);
2110 if (ret < 0)
2111 return ret;
2112 data->alarms |= ret << 24;
2113
2114 ret = adt7475_read(REG_EXTEND3);
2115 if (ret < 0)
2116 return ret;
2117 ext = ret;
2118
2119 ret = adt7475_read(REG_VTT);
2120 if (ret < 0)
2121 return ret;
2122 data->voltage[INPUT][5] = ret << 2 |
2123 ((ext >> 4) & 3);
2124 }
2125
2126 if (data->has_voltage & (1 << 6)) {
2127 ret = adt7475_read(REG_STATUS4);
2128 if (ret < 0)
2129 return ret;
2130 data->alarms |= ret << 24;
2131
2132 ret = adt7475_read(REG_EXTEND3);
2133 if (ret < 0)
2134 return ret;
2135 ext = ret;
2136
2137 ret = adt7475_read(REG_IMON);
2138 if (ret < 0)
2139 return ret;
2140 data->voltage[INPUT][6] = ret << 2 |
2141 ((ext >> 6) & 3);
2142 }
2143
2144 for (i = 0; i < ADT7475_TACH_COUNT; i++) {
2145 if (i == 3 && !data->has_fan4)
2146 continue;
2147 ret = adt7475_read_word(client, TACH_REG(i));
2148 if (ret < 0)
2149 return ret;
2150 data->tach[INPUT][i] = ret;
2151 }
2152
2153 /* Updated by hw when in auto mode */
2154 for (i = 0; i < ADT7475_PWM_COUNT; i++) {
2155 if (i == 1 && !data->has_pwm2)
2156 continue;
2157 ret = adt7475_read(PWM_REG(i));
2158 if (ret < 0)
2159 return ret;
2160 data->pwm[INPUT][i] = ret;
2161 }
2162
2163 if (data->has_vid) {
2164 ret = adt7475_read(REG_VID);
2165 if (ret < 0)
2166 return ret;
2167 data->vid = ret & 0x3f;
2168 }
2169
2170 return 0;
2171}
2172
2173static struct adt7475_data *adt7475_update_device(struct device *dev)
2174{
2175 struct adt7475_data *data = dev_get_drvdata(dev);
2176 int ret;
2177
2178 mutex_lock(&data->lock);
2179
2180 /* Measurement values update every 2 seconds */
2181 if (time_after(jiffies, data->measure_updated + HZ * 2) ||
2182 !data->valid) {
2183 ret = adt7475_update_measure(dev);
2184 if (ret) {
2185 data->valid = false;
2186 mutex_unlock(&data->lock);
2187 return ERR_PTR(ret);
2188 }
2189 data->measure_updated = jiffies;
2190 data->valid = true;
2191 }
2192
2193 mutex_unlock(&data->lock);
2194
2195 return data;
2196}
2197
2198module_i2c_driver(adt7475_driver);
2199
2200MODULE_AUTHOR("Advanced Micro Devices, Inc");
2201MODULE_DESCRIPTION("adt7475 driver");
2202MODULE_LICENSE("GPL");