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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 <[email protected]>
6 * Copyright (C) 2008 Hans de Goede <[email protected]>
7 * Copyright (C) 2009 Jean Delvare <[email protected]>
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/property.h>
23#include <linux/util_macros.h>
24
25#include <dt-bindings/pwm/pwm.h>
26
27/* Indexes for the sysfs hooks */
28enum adt_sysfs_id {
29 INPUT = 0,
30 MIN = 1,
31 MAX = 2,
32 CONTROL = 3,
33 OFFSET = 3, // Dup
34 AUTOMIN = 4,
35 THERM = 5,
36 HYSTERSIS = 6,
37/*
38 * These are unique identifiers for the sysfs functions - unlike the
39 * numbers above, these are not also indexes into an array
40 */
41 ALARM = 9,
42 FAULT = 10,
43};
44
45
46/* 7475 Common Registers */
47
48#define REG_DEVREV2 0x12 /* ADT7490 only */
49#define REG_IMON 0x1D /* ADT7490 only */
50
51#define REG_VTT 0x1E /* ADT7490 only */
52#define REG_EXTEND3 0x1F /* ADT7490 only */
53
54#define REG_VOLTAGE_BASE 0x20
55#define REG_TEMP_BASE 0x25
56#define REG_TACH_BASE 0x28
57#define REG_PWM_BASE 0x30
58#define REG_PWM_MAX_BASE 0x38
59
60#define REG_DEVID 0x3D
61#define REG_VENDID 0x3E
62#define REG_DEVID2 0x3F
63
64#define REG_CONFIG1 0x40
65
66#define REG_STATUS1 0x41
67#define REG_STATUS2 0x42
68
69#define REG_VID 0x43 /* ADT7476 only */
70
71#define REG_VOLTAGE_MIN_BASE 0x44
72#define REG_VOLTAGE_MAX_BASE 0x45
73
74#define REG_TEMP_MIN_BASE 0x4E
75#define REG_TEMP_MAX_BASE 0x4F
76
77#define REG_TACH_MIN_BASE 0x54
78
79#define REG_PWM_CONFIG_BASE 0x5C
80
81#define REG_TEMP_TRANGE_BASE 0x5F
82
83#define REG_ENHANCE_ACOUSTICS1 0x62
84#define REG_ENHANCE_ACOUSTICS2 0x63
85
86#define REG_PWM_MIN_BASE 0x64
87
88#define REG_TEMP_TMIN_BASE 0x67
89#define REG_TEMP_THERM_BASE 0x6A
90
91#define REG_REMOTE1_HYSTERSIS 0x6D
92#define REG_REMOTE2_HYSTERSIS 0x6E
93
94#define REG_TEMP_OFFSET_BASE 0x70
95
96#define REG_CONFIG2 0x73
97
98#define REG_EXTEND1 0x76
99#define REG_EXTEND2 0x77
100
101#define REG_CONFIG3 0x78
102#define REG_CONFIG5 0x7C
103#define REG_CONFIG4 0x7D
104
105#define REG_STATUS4 0x81 /* ADT7490 only */
106
107#define REG_VTT_MIN 0x84 /* ADT7490 only */
108#define REG_VTT_MAX 0x86 /* ADT7490 only */
109
110#define REG_IMON_MIN 0x85 /* ADT7490 only */
111#define REG_IMON_MAX 0x87 /* ADT7490 only */
112
113#define VID_VIDSEL 0x80 /* ADT7476 only */
114
115#define CONFIG2_ATTN 0x20
116
117#define CONFIG3_SMBALERT 0x01
118#define CONFIG3_THERM 0x02
119
120#define CONFIG4_PINFUNC 0x03
121#define CONFIG4_THERM 0x01
122#define CONFIG4_SMBALERT 0x02
123#define CONFIG4_MAXDUTY 0x08
124#define CONFIG4_ATTN_IN10 0x30
125#define CONFIG4_ATTN_IN43 0xC0
126
127#define CONFIG5_TWOSCOMP 0x01
128#define CONFIG5_TEMPOFFSET 0x02
129#define CONFIG5_VIDGPIO 0x10 /* ADT7476 only */
130
131/* ADT7475 Settings */
132
133#define ADT7475_VOLTAGE_COUNT 5 /* Not counting Vtt or Imon */
134#define ADT7475_TEMP_COUNT 3
135#define ADT7475_TACH_COUNT 4
136#define ADT7475_PWM_COUNT 3
137
138/* Macro to read the registers */
139
140#define adt7475_read(reg) i2c_smbus_read_byte_data(client, (reg))
141
142/* Macros to easily index the registers */
143
144#define TACH_REG(idx) (REG_TACH_BASE + ((idx) * 2))
145#define TACH_MIN_REG(idx) (REG_TACH_MIN_BASE + ((idx) * 2))
146
147#define PWM_REG(idx) (REG_PWM_BASE + (idx))
148#define PWM_MAX_REG(idx) (REG_PWM_MAX_BASE + (idx))
149#define PWM_MIN_REG(idx) (REG_PWM_MIN_BASE + (idx))
150#define PWM_CONFIG_REG(idx) (REG_PWM_CONFIG_BASE + (idx))
151
152#define VOLTAGE_REG(idx) (REG_VOLTAGE_BASE + (idx))
153#define VOLTAGE_MIN_REG(idx) (REG_VOLTAGE_MIN_BASE + ((idx) * 2))
154#define VOLTAGE_MAX_REG(idx) (REG_VOLTAGE_MAX_BASE + ((idx) * 2))
155
156#define TEMP_REG(idx) (REG_TEMP_BASE + (idx))
157#define TEMP_MIN_REG(idx) (REG_TEMP_MIN_BASE + ((idx) * 2))
158#define TEMP_MAX_REG(idx) (REG_TEMP_MAX_BASE + ((idx) * 2))
159#define TEMP_TMIN_REG(idx) (REG_TEMP_TMIN_BASE + (idx))
160#define TEMP_THERM_REG(idx) (REG_TEMP_THERM_BASE + (idx))
161#define TEMP_OFFSET_REG(idx) (REG_TEMP_OFFSET_BASE + (idx))
162#define TEMP_TRANGE_REG(idx) (REG_TEMP_TRANGE_BASE + (idx))
163
164static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
165
166enum chips { adt7473, adt7475, adt7476, adt7490 };
167
168static const struct i2c_device_id adt7475_id[] = {
169 { .name = "adt7473", .driver_data = adt7473 },
170 { .name = "adt7475", .driver_data = adt7475 },
171 { .name = "adt7476", .driver_data = adt7476 },
172 { .name = "adt7490", .driver_data = adt7490 },
173 { }
174};
175MODULE_DEVICE_TABLE(i2c, adt7475_id);
176
177static const struct of_device_id adt7475_of_match[] = {
178 {
179 .compatible = "adi,adt7473",
180 .data = (void *)adt7473
181 },
182 {
183 .compatible = "adi,adt7475",
184 .data = (void *)adt7475
185 },
186 {
187 .compatible = "adi,adt7476",
188 .data = (void *)adt7476
189 },
190 {
191 .compatible = "adi,adt7490",
192 .data = (void *)adt7490
193 },
194 { },
195};
196MODULE_DEVICE_TABLE(of, adt7475_of_match);
197
198struct adt7475_data {
199 struct i2c_client *client;
200 struct mutex lock;
201
202 unsigned long measure_updated;
203 bool valid;
204
205 u8 config2;
206 u8 config4;
207 u8 config5;
208 u8 has_voltage;
209 u8 bypass_attn; /* Bypass voltage attenuator */
210 u8 has_pwm2:1;
211 u8 has_fan4:1;
212 u8 has_vid:1;
213 u32 alarms;
214 u16 voltage[3][7];
215 u16 temp[7][3];
216 u16 tach[2][4];
217 u8 pwm[4][3];
218 u8 range[3];
219 u8 pwmctl[3];
220 u8 pwmchan[3];
221 u8 enh_acoustics[2];
222
223 u8 vid;
224 u8 vrm;
225 const struct attribute_group *groups[10];
226};
227
228static struct i2c_driver adt7475_driver;
229static struct adt7475_data *adt7475_update_device(struct device *dev);
230static void adt7475_read_hystersis(struct i2c_client *client);
231static void adt7475_read_pwm(struct i2c_client *client, int index);
232
233/* Given a temp value, convert it to register value */
234
235static inline u16 temp2reg(struct adt7475_data *data, long val)
236{
237 u16 ret;
238
239 if (!(data->config5 & CONFIG5_TWOSCOMP)) {
240 val = clamp_val(val, -64000, 191000);
241 ret = (val + 64500) / 1000;
242 } else {
243 val = clamp_val(val, -128000, 127000);
244 if (val < -500)
245 ret = (256500 + val) / 1000;
246 else
247 ret = (val + 500) / 1000;
248 }
249
250 return ret << 2;
251}
252
253/* Given a register value, convert it to a real temp value */
254
255static inline int reg2temp(struct adt7475_data *data, u16 reg)
256{
257 if (data->config5 & CONFIG5_TWOSCOMP) {
258 if (reg >= 512)
259 return (reg - 1024) * 250;
260 else
261 return reg * 250;
262 } else
263 return (reg - 256) * 250;
264}
265
266static inline int tach2rpm(u16 tach)
267{
268 if (tach == 0 || tach == 0xFFFF)
269 return 0;
270
271 return (90000 * 60) / tach;
272}
273
274static inline u16 rpm2tach(unsigned long rpm)
275{
276 if (rpm == 0)
277 return 0;
278
279 return clamp_val((90000 * 60) / rpm, 1, 0xFFFF);
280}
281
282/* Scaling factors for voltage inputs, taken from the ADT7490 datasheet */
283static const int adt7473_in_scaling[ADT7475_VOLTAGE_COUNT + 2][2] = {
284 { 45, 94 }, /* +2.5V */
285 { 175, 525 }, /* Vccp */
286 { 68, 71 }, /* Vcc */
287 { 93, 47 }, /* +5V */
288 { 120, 20 }, /* +12V */
289 { 45, 45 }, /* Vtt */
290 { 45, 45 }, /* Imon */
291};
292
293static inline int reg2volt(int channel, u16 reg, u8 bypass_attn)
294{
295 const int *r = adt7473_in_scaling[channel];
296
297 if (bypass_attn & (1 << channel))
298 return DIV_ROUND_CLOSEST(reg * 2250, 1024);
299 return DIV_ROUND_CLOSEST(reg * (r[0] + r[1]) * 2250, r[1] * 1024);
300}
301
302static inline u16 volt2reg(int channel, long volt, u8 bypass_attn)
303{
304 const int *r = adt7473_in_scaling[channel];
305 long reg;
306
307 if (bypass_attn & (1 << channel))
308 reg = DIV_ROUND_CLOSEST(volt * 1024, 2250);
309 else
310 reg = DIV_ROUND_CLOSEST(volt * r[1] * 1024,
311 (r[0] + r[1]) * 2250);
312 return clamp_val(reg, 0, 1023) & (0xff << 2);
313}
314
315static int adt7475_read_word(struct i2c_client *client, int reg)
316{
317 int val1, val2;
318
319 val1 = i2c_smbus_read_byte_data(client, reg);
320 if (val1 < 0)
321 return val1;
322 val2 = i2c_smbus_read_byte_data(client, reg + 1);
323 if (val2 < 0)
324 return val2;
325
326 return val1 | (val2 << 8);
327}
328
329static void adt7475_write_word(struct i2c_client *client, int reg, u16 val)
330{
331 i2c_smbus_write_byte_data(client, reg + 1, val >> 8);
332 i2c_smbus_write_byte_data(client, reg, val & 0xFF);
333}
334
335static ssize_t voltage_show(struct device *dev, struct device_attribute *attr,
336 char *buf)
337{
338 struct adt7475_data *data = adt7475_update_device(dev);
339 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
340 unsigned short val;
341
342 if (IS_ERR(data))
343 return PTR_ERR(data);
344
345 switch (sattr->nr) {
346 case ALARM:
347 return sprintf(buf, "%d\n",
348 (data->alarms >> sattr->index) & 1);
349 default:
350 val = data->voltage[sattr->nr][sattr->index];
351 return sprintf(buf, "%d\n",
352 reg2volt(sattr->index, val, data->bypass_attn));
353 }
354}
355
356static ssize_t voltage_store(struct device *dev,
357 struct device_attribute *attr, const char *buf,
358 size_t count)
359{
360
361 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
362 struct adt7475_data *data = dev_get_drvdata(dev);
363 struct i2c_client *client = data->client;
364 unsigned char reg;
365 long val;
366
367 if (kstrtol(buf, 10, &val))
368 return -EINVAL;
369
370 mutex_lock(&data->lock);
371
372 data->voltage[sattr->nr][sattr->index] =
373 volt2reg(sattr->index, val, data->bypass_attn);
374
375 if (sattr->index < ADT7475_VOLTAGE_COUNT) {
376 if (sattr->nr == MIN)
377 reg = VOLTAGE_MIN_REG(sattr->index);
378 else
379 reg = VOLTAGE_MAX_REG(sattr->index);
380 } else if (sattr->index == 5) {
381 if (sattr->nr == MIN)
382 reg = REG_VTT_MIN;
383 else
384 reg = REG_VTT_MAX;
385 } else {
386 if (sattr->nr == MIN)
387 reg = REG_IMON_MIN;
388 else
389 reg = REG_IMON_MAX;
390 }
391
392 i2c_smbus_write_byte_data(client, reg,
393 data->voltage[sattr->nr][sattr->index] >> 2);
394 mutex_unlock(&data->lock);
395
396 return count;
397}
398
399static ssize_t temp_show(struct device *dev, struct device_attribute *attr,
400 char *buf)
401{
402 struct adt7475_data *data = adt7475_update_device(dev);
403 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
404 int out;
405
406 if (IS_ERR(data))
407 return PTR_ERR(data);
408
409 switch (sattr->nr) {
410 case HYSTERSIS:
411 mutex_lock(&data->lock);
412 out = data->temp[sattr->nr][sattr->index];
413 if (sattr->index != 1)
414 out = (out >> 4) & 0xF;
415 else
416 out = (out & 0xF);
417 /*
418 * Show the value as an absolute number tied to
419 * THERM
420 */
421 out = reg2temp(data, data->temp[THERM][sattr->index]) -
422 out * 1000;
423 mutex_unlock(&data->lock);
424 break;
425
426 case OFFSET:
427 /*
428 * Offset is always 2's complement, regardless of the
429 * setting in CONFIG5
430 */
431 mutex_lock(&data->lock);
432 out = (s8)data->temp[sattr->nr][sattr->index];
433 if (data->config5 & CONFIG5_TEMPOFFSET)
434 out *= 1000;
435 else
436 out *= 500;
437 mutex_unlock(&data->lock);
438 break;
439
440 case ALARM:
441 out = (data->alarms >> (sattr->index + 4)) & 1;
442 break;
443
444 case FAULT:
445 /* Note - only for remote1 and remote2 */
446 out = !!(data->alarms & (sattr->index ? 0x8000 : 0x4000));
447 break;
448
449 default:
450 /* All other temp values are in the configured format */
451 out = reg2temp(data, data->temp[sattr->nr][sattr->index]);
452 }
453
454 return sprintf(buf, "%d\n", out);
455}
456
457static ssize_t temp_store(struct device *dev, struct device_attribute *attr,
458 const char *buf, size_t count)
459{
460 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
461 struct adt7475_data *data = dev_get_drvdata(dev);
462 struct i2c_client *client = data->client;
463 unsigned char reg = 0;
464 u8 out;
465 int temp;
466 long val;
467
468 if (kstrtol(buf, 10, &val))
469 return -EINVAL;
470
471 mutex_lock(&data->lock);
472
473 /* We need the config register in all cases for temp <-> reg conv. */
474 data->config5 = adt7475_read(REG_CONFIG5);
475
476 switch (sattr->nr) {
477 case OFFSET:
478 if (data->config5 & CONFIG5_TEMPOFFSET) {
479 val = clamp_val(val, -63000, 127000);
480 out = data->temp[OFFSET][sattr->index] = val / 1000;
481 } else {
482 val = clamp_val(val, -63000, 64000);
483 out = data->temp[OFFSET][sattr->index] = val / 500;
484 }
485 break;
486
487 case HYSTERSIS:
488 /*
489 * The value will be given as an absolute value, turn it
490 * into an offset based on THERM
491 */
492
493 /* Read fresh THERM and HYSTERSIS values from the chip */
494 data->temp[THERM][sattr->index] =
495 adt7475_read(TEMP_THERM_REG(sattr->index)) << 2;
496 adt7475_read_hystersis(client);
497
498 temp = reg2temp(data, data->temp[THERM][sattr->index]);
499 val = clamp_val(val, temp - 15000, temp);
500 val = (temp - val) / 1000;
501
502 if (sattr->index != 1) {
503 data->temp[HYSTERSIS][sattr->index] &= 0x0F;
504 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF) << 4;
505 } else {
506 data->temp[HYSTERSIS][sattr->index] &= 0xF0;
507 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF);
508 }
509
510 out = data->temp[HYSTERSIS][sattr->index];
511 break;
512
513 default:
514 data->temp[sattr->nr][sattr->index] = temp2reg(data, val);
515
516 /*
517 * We maintain an extra 2 digits of precision for simplicity
518 * - shift those back off before writing the value
519 */
520 out = (u8) (data->temp[sattr->nr][sattr->index] >> 2);
521 }
522
523 switch (sattr->nr) {
524 case MIN:
525 reg = TEMP_MIN_REG(sattr->index);
526 break;
527 case MAX:
528 reg = TEMP_MAX_REG(sattr->index);
529 break;
530 case OFFSET:
531 reg = TEMP_OFFSET_REG(sattr->index);
532 break;
533 case AUTOMIN:
534 reg = TEMP_TMIN_REG(sattr->index);
535 break;
536 case THERM:
537 reg = TEMP_THERM_REG(sattr->index);
538 break;
539 case HYSTERSIS:
540 if (sattr->index != 2)
541 reg = REG_REMOTE1_HYSTERSIS;
542 else
543 reg = REG_REMOTE2_HYSTERSIS;
544
545 break;
546 }
547
548 i2c_smbus_write_byte_data(client, reg, out);
549
550 mutex_unlock(&data->lock);
551 return count;
552}
553
554/* Assuming CONFIG6[SLOW] is 0 */
555static const int ad7475_st_map[] = {
556 37500, 18800, 12500, 7500, 4700, 3100, 1600, 800,
557};
558
559static ssize_t temp_st_show(struct device *dev, struct device_attribute *attr,
560 char *buf)
561{
562 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
563 struct adt7475_data *data = dev_get_drvdata(dev);
564 long val;
565
566 switch (sattr->index) {
567 case 0:
568 val = data->enh_acoustics[0] & 0xf;
569 break;
570 case 1:
571 val = data->enh_acoustics[1] & 0xf;
572 break;
573 case 2:
574 default:
575 val = (data->enh_acoustics[1] >> 4) & 0xf;
576 break;
577 }
578
579 if (val & 0x8)
580 return sprintf(buf, "%d\n", ad7475_st_map[val & 0x7]);
581 else
582 return sprintf(buf, "0\n");
583}
584
585static ssize_t temp_st_store(struct device *dev,
586 struct device_attribute *attr, const char *buf,
587 size_t count)
588{
589 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
590 struct adt7475_data *data = dev_get_drvdata(dev);
591 struct i2c_client *client = data->client;
592 unsigned char reg;
593 int shift, idx;
594 ulong val;
595
596 if (kstrtoul(buf, 10, &val))
597 return -EINVAL;
598
599 switch (sattr->index) {
600 case 0:
601 reg = REG_ENHANCE_ACOUSTICS1;
602 shift = 0;
603 idx = 0;
604 break;
605 case 1:
606 reg = REG_ENHANCE_ACOUSTICS2;
607 shift = 0;
608 idx = 1;
609 break;
610 case 2:
611 default:
612 reg = REG_ENHANCE_ACOUSTICS2;
613 shift = 4;
614 idx = 1;
615 break;
616 }
617
618 if (val > 0) {
619 val = find_closest_descending(val, ad7475_st_map,
620 ARRAY_SIZE(ad7475_st_map));
621 val |= 0x8;
622 }
623
624 mutex_lock(&data->lock);
625
626 data->enh_acoustics[idx] &= ~(0xf << shift);
627 data->enh_acoustics[idx] |= (val << shift);
628
629 i2c_smbus_write_byte_data(client, reg, data->enh_acoustics[idx]);
630
631 mutex_unlock(&data->lock);
632
633 return count;
634}
635
636/*
637 * Table of autorange values - the user will write the value in millidegrees,
638 * and we'll convert it
639 */
640static const int autorange_table[] = {
641 2000, 2500, 3330, 4000, 5000, 6670, 8000,
642 10000, 13330, 16000, 20000, 26670, 32000, 40000,
643 53330, 80000
644};
645
646static ssize_t point2_show(struct device *dev, struct device_attribute *attr,
647 char *buf)
648{
649 struct adt7475_data *data = adt7475_update_device(dev);
650 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
651 int out, val;
652
653 if (IS_ERR(data))
654 return PTR_ERR(data);
655
656 mutex_lock(&data->lock);
657 out = (data->range[sattr->index] >> 4) & 0x0F;
658 val = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
659 mutex_unlock(&data->lock);
660
661 return sprintf(buf, "%d\n", val + autorange_table[out]);
662}
663
664static ssize_t point2_store(struct device *dev, struct device_attribute *attr,
665 const char *buf, size_t count)
666{
667 struct adt7475_data *data = dev_get_drvdata(dev);
668 struct i2c_client *client = data->client;
669 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
670 int temp;
671 long val;
672
673 if (kstrtol(buf, 10, &val))
674 return -EINVAL;
675
676 mutex_lock(&data->lock);
677
678 /* Get a fresh copy of the needed registers */
679 data->config5 = adt7475_read(REG_CONFIG5);
680 data->temp[AUTOMIN][sattr->index] =
681 adt7475_read(TEMP_TMIN_REG(sattr->index)) << 2;
682 data->range[sattr->index] =
683 adt7475_read(TEMP_TRANGE_REG(sattr->index));
684
685 /*
686 * The user will write an absolute value, so subtract the start point
687 * to figure the range
688 */
689 temp = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
690 val = clamp_val(val, temp + autorange_table[0],
691 temp + autorange_table[ARRAY_SIZE(autorange_table) - 1]);
692 val -= temp;
693
694 /* Find the nearest table entry to what the user wrote */
695 val = find_closest(val, autorange_table, ARRAY_SIZE(autorange_table));
696
697 data->range[sattr->index] &= ~0xF0;
698 data->range[sattr->index] |= val << 4;
699
700 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
701 data->range[sattr->index]);
702
703 mutex_unlock(&data->lock);
704 return count;
705}
706
707static ssize_t tach_show(struct device *dev, struct device_attribute *attr,
708 char *buf)
709{
710 struct adt7475_data *data = adt7475_update_device(dev);
711 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
712 int out;
713
714 if (IS_ERR(data))
715 return PTR_ERR(data);
716
717 if (sattr->nr == ALARM)
718 out = (data->alarms >> (sattr->index + 10)) & 1;
719 else
720 out = tach2rpm(data->tach[sattr->nr][sattr->index]);
721
722 return sprintf(buf, "%d\n", out);
723}
724
725static ssize_t tach_store(struct device *dev, struct device_attribute *attr,
726 const char *buf, size_t count)
727{
728
729 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
730 struct adt7475_data *data = dev_get_drvdata(dev);
731 struct i2c_client *client = data->client;
732 unsigned long val;
733
734 if (kstrtoul(buf, 10, &val))
735 return -EINVAL;
736
737 mutex_lock(&data->lock);
738
739 data->tach[MIN][sattr->index] = rpm2tach(val);
740
741 adt7475_write_word(client, TACH_MIN_REG(sattr->index),
742 data->tach[MIN][sattr->index]);
743
744 mutex_unlock(&data->lock);
745 return count;
746}
747
748static ssize_t pwm_show(struct device *dev, struct device_attribute *attr,
749 char *buf)
750{
751 struct adt7475_data *data = adt7475_update_device(dev);
752 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
753
754 if (IS_ERR(data))
755 return PTR_ERR(data);
756
757 return sprintf(buf, "%d\n", data->pwm[sattr->nr][sattr->index]);
758}
759
760static ssize_t pwmchan_show(struct device *dev, struct device_attribute *attr,
761 char *buf)
762{
763 struct adt7475_data *data = adt7475_update_device(dev);
764 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
765
766 if (IS_ERR(data))
767 return PTR_ERR(data);
768
769 return sprintf(buf, "%d\n", data->pwmchan[sattr->index]);
770}
771
772static ssize_t pwmctrl_show(struct device *dev, struct device_attribute *attr,
773 char *buf)
774{
775 struct adt7475_data *data = adt7475_update_device(dev);
776 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
777
778 if (IS_ERR(data))
779 return PTR_ERR(data);
780
781 return sprintf(buf, "%d\n", data->pwmctl[sattr->index]);
782}
783
784static ssize_t pwm_store(struct device *dev, struct device_attribute *attr,
785 const char *buf, size_t count)
786{
787
788 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
789 struct adt7475_data *data = dev_get_drvdata(dev);
790 struct i2c_client *client = data->client;
791 unsigned char reg = 0;
792 long val;
793
794 if (kstrtol(buf, 10, &val))
795 return -EINVAL;
796
797 mutex_lock(&data->lock);
798
799 switch (sattr->nr) {
800 case INPUT:
801 /* Get a fresh value for CONTROL */
802 data->pwm[CONTROL][sattr->index] =
803 adt7475_read(PWM_CONFIG_REG(sattr->index));
804
805 /*
806 * If we are not in manual mode, then we shouldn't allow
807 * the user to set the pwm speed
808 */
809 if (((data->pwm[CONTROL][sattr->index] >> 5) & 7) != 7) {
810 mutex_unlock(&data->lock);
811 return count;
812 }
813
814 reg = PWM_REG(sattr->index);
815 break;
816
817 case MIN:
818 reg = PWM_MIN_REG(sattr->index);
819 break;
820
821 case MAX:
822 reg = PWM_MAX_REG(sattr->index);
823 break;
824 }
825
826 data->pwm[sattr->nr][sattr->index] = clamp_val(val, 0, 0xFF);
827 i2c_smbus_write_byte_data(client, reg,
828 data->pwm[sattr->nr][sattr->index]);
829 mutex_unlock(&data->lock);
830
831 return count;
832}
833
834static ssize_t stall_disable_show(struct device *dev,
835 struct device_attribute *attr, char *buf)
836{
837 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
838 struct adt7475_data *data = dev_get_drvdata(dev);
839
840 u8 mask = BIT(5 + sattr->index);
841
842 return sprintf(buf, "%d\n", !!(data->enh_acoustics[0] & mask));
843}
844
845static ssize_t stall_disable_store(struct device *dev,
846 struct device_attribute *attr,
847 const char *buf, size_t count)
848{
849 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
850 struct adt7475_data *data = dev_get_drvdata(dev);
851 struct i2c_client *client = data->client;
852 long val;
853 u8 mask = BIT(5 + sattr->index);
854
855 if (kstrtol(buf, 10, &val))
856 return -EINVAL;
857
858 mutex_lock(&data->lock);
859
860 data->enh_acoustics[0] &= ~mask;
861 if (val)
862 data->enh_acoustics[0] |= mask;
863
864 i2c_smbus_write_byte_data(client, REG_ENHANCE_ACOUSTICS1,
865 data->enh_acoustics[0]);
866
867 mutex_unlock(&data->lock);
868
869 return count;
870}
871
872/* Called by set_pwmctrl and set_pwmchan */
873
874static int hw_set_pwm(struct i2c_client *client, int index,
875 unsigned int pwmctl, unsigned int pwmchan)
876{
877 struct adt7475_data *data = i2c_get_clientdata(client);
878 long val = 0;
879
880 switch (pwmctl) {
881 case 0:
882 val = 0x03; /* Run at full speed */
883 break;
884 case 1:
885 val = 0x07; /* Manual mode */
886 break;
887 case 2:
888 switch (pwmchan) {
889 case 1:
890 /* Remote1 controls PWM */
891 val = 0x00;
892 break;
893 case 2:
894 /* local controls PWM */
895 val = 0x01;
896 break;
897 case 4:
898 /* remote2 controls PWM */
899 val = 0x02;
900 break;
901 case 6:
902 /* local/remote2 control PWM */
903 val = 0x05;
904 break;
905 case 7:
906 /* All three control PWM */
907 val = 0x06;
908 break;
909 default:
910 return -EINVAL;
911 }
912 break;
913 default:
914 return -EINVAL;
915 }
916
917 data->pwmctl[index] = pwmctl;
918 data->pwmchan[index] = pwmchan;
919
920 data->pwm[CONTROL][index] &= ~0xE0;
921 data->pwm[CONTROL][index] |= (val & 7) << 5;
922
923 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
924 data->pwm[CONTROL][index]);
925
926 return 0;
927}
928
929static ssize_t pwmchan_store(struct device *dev,
930 struct device_attribute *attr, const char *buf,
931 size_t count)
932{
933 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
934 struct adt7475_data *data = dev_get_drvdata(dev);
935 struct i2c_client *client = data->client;
936 int r;
937 long val;
938
939 if (kstrtol(buf, 10, &val))
940 return -EINVAL;
941
942 mutex_lock(&data->lock);
943 /* Read Modify Write PWM values */
944 adt7475_read_pwm(client, sattr->index);
945 r = hw_set_pwm(client, sattr->index, data->pwmctl[sattr->index], val);
946 if (r)
947 count = r;
948 mutex_unlock(&data->lock);
949
950 return count;
951}
952
953static ssize_t pwmctrl_store(struct device *dev,
954 struct device_attribute *attr, const char *buf,
955 size_t count)
956{
957 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
958 struct adt7475_data *data = dev_get_drvdata(dev);
959 struct i2c_client *client = data->client;
960 int r;
961 long val;
962
963 if (kstrtol(buf, 10, &val))
964 return -EINVAL;
965
966 mutex_lock(&data->lock);
967 /* Read Modify Write PWM values */
968 adt7475_read_pwm(client, sattr->index);
969 r = hw_set_pwm(client, sattr->index, val, data->pwmchan[sattr->index]);
970 if (r)
971 count = r;
972 mutex_unlock(&data->lock);
973
974 return count;
975}
976
977/* List of frequencies for the PWM */
978static const int pwmfreq_table[] = {
979 11, 14, 22, 29, 35, 44, 58, 88, 22500
980};
981
982static ssize_t pwmfreq_show(struct device *dev, struct device_attribute *attr,
983 char *buf)
984{
985 struct adt7475_data *data = adt7475_update_device(dev);
986 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
987 int idx;
988
989 if (IS_ERR(data))
990 return PTR_ERR(data);
991 idx = clamp_val(data->range[sattr->index] & 0xf, 0,
992 ARRAY_SIZE(pwmfreq_table) - 1);
993
994 return sprintf(buf, "%d\n", pwmfreq_table[idx]);
995}
996
997static ssize_t pwmfreq_store(struct device *dev,
998 struct device_attribute *attr, const char *buf,
999 size_t count)
1000{
1001 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
1002 struct adt7475_data *data = dev_get_drvdata(dev);
1003 struct i2c_client *client = data->client;
1004 int out;
1005 long val;
1006
1007 if (kstrtol(buf, 10, &val))
1008 return -EINVAL;
1009
1010 out = find_closest(val, pwmfreq_table, ARRAY_SIZE(pwmfreq_table));
1011
1012 mutex_lock(&data->lock);
1013
1014 data->range[sattr->index] =
1015 adt7475_read(TEMP_TRANGE_REG(sattr->index));
1016 data->range[sattr->index] &= ~0xf;
1017 data->range[sattr->index] |= out;
1018
1019 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
1020 data->range[sattr->index]);
1021
1022 mutex_unlock(&data->lock);
1023 return count;
1024}
1025
1026static ssize_t pwm_use_point2_pwm_at_crit_show(struct device *dev,
1027 struct device_attribute *devattr,
1028 char *buf)
1029{
1030 struct adt7475_data *data = adt7475_update_device(dev);
1031
1032 if (IS_ERR(data))
1033 return PTR_ERR(data);
1034
1035 return sprintf(buf, "%d\n", !!(data->config4 & CONFIG4_MAXDUTY));
1036}
1037
1038static ssize_t pwm_use_point2_pwm_at_crit_store(struct device *dev,
1039 struct device_attribute *devattr,
1040 const char *buf, size_t count)
1041{
1042 struct adt7475_data *data = dev_get_drvdata(dev);
1043 struct i2c_client *client = data->client;
1044 long val;
1045
1046 if (kstrtol(buf, 10, &val))
1047 return -EINVAL;
1048 if (val != 0 && val != 1)
1049 return -EINVAL;
1050
1051 mutex_lock(&data->lock);
1052 data->config4 = i2c_smbus_read_byte_data(client, REG_CONFIG4);
1053 if (val)
1054 data->config4 |= CONFIG4_MAXDUTY;
1055 else
1056 data->config4 &= ~CONFIG4_MAXDUTY;
1057 i2c_smbus_write_byte_data(client, REG_CONFIG4, data->config4);
1058 mutex_unlock(&data->lock);
1059
1060 return count;
1061}
1062
1063static ssize_t vrm_show(struct device *dev, struct device_attribute *devattr,
1064 char *buf)
1065{
1066 struct adt7475_data *data = dev_get_drvdata(dev);
1067 return sprintf(buf, "%d\n", (int)data->vrm);
1068}
1069
1070static ssize_t vrm_store(struct device *dev, struct device_attribute *devattr,
1071 const char *buf, size_t count)
1072{
1073 struct adt7475_data *data = dev_get_drvdata(dev);
1074 long val;
1075
1076 if (kstrtol(buf, 10, &val))
1077 return -EINVAL;
1078 if (val < 0 || val > 255)
1079 return -EINVAL;
1080 data->vrm = val;
1081
1082 return count;
1083}
1084
1085static ssize_t cpu0_vid_show(struct device *dev,
1086 struct device_attribute *devattr, char *buf)
1087{
1088 struct adt7475_data *data = adt7475_update_device(dev);
1089
1090 if (IS_ERR(data))
1091 return PTR_ERR(data);
1092
1093 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
1094}
1095
1096static SENSOR_DEVICE_ATTR_2_RO(in0_input, voltage, INPUT, 0);
1097static SENSOR_DEVICE_ATTR_2_RW(in0_max, voltage, MAX, 0);
1098static SENSOR_DEVICE_ATTR_2_RW(in0_min, voltage, MIN, 0);
1099static SENSOR_DEVICE_ATTR_2_RO(in0_alarm, voltage, ALARM, 0);
1100static SENSOR_DEVICE_ATTR_2_RO(in1_input, voltage, INPUT, 1);
1101static SENSOR_DEVICE_ATTR_2_RW(in1_max, voltage, MAX, 1);
1102static SENSOR_DEVICE_ATTR_2_RW(in1_min, voltage, MIN, 1);
1103static SENSOR_DEVICE_ATTR_2_RO(in1_alarm, voltage, ALARM, 1);
1104static SENSOR_DEVICE_ATTR_2_RO(in2_input, voltage, INPUT, 2);
1105static SENSOR_DEVICE_ATTR_2_RW(in2_max, voltage, MAX, 2);
1106static SENSOR_DEVICE_ATTR_2_RW(in2_min, voltage, MIN, 2);
1107static SENSOR_DEVICE_ATTR_2_RO(in2_alarm, voltage, ALARM, 2);
1108static SENSOR_DEVICE_ATTR_2_RO(in3_input, voltage, INPUT, 3);
1109static SENSOR_DEVICE_ATTR_2_RW(in3_max, voltage, MAX, 3);
1110static SENSOR_DEVICE_ATTR_2_RW(in3_min, voltage, MIN, 3);
1111static SENSOR_DEVICE_ATTR_2_RO(in3_alarm, voltage, ALARM, 3);
1112static SENSOR_DEVICE_ATTR_2_RO(in4_input, voltage, INPUT, 4);
1113static SENSOR_DEVICE_ATTR_2_RW(in4_max, voltage, MAX, 4);
1114static SENSOR_DEVICE_ATTR_2_RW(in4_min, voltage, MIN, 4);
1115static SENSOR_DEVICE_ATTR_2_RO(in4_alarm, voltage, ALARM, 8);
1116static SENSOR_DEVICE_ATTR_2_RO(in5_input, voltage, INPUT, 5);
1117static SENSOR_DEVICE_ATTR_2_RW(in5_max, voltage, MAX, 5);
1118static SENSOR_DEVICE_ATTR_2_RW(in5_min, voltage, MIN, 5);
1119static SENSOR_DEVICE_ATTR_2_RO(in5_alarm, voltage, ALARM, 31);
1120static SENSOR_DEVICE_ATTR_2_RO(in6_input, voltage, INPUT, 6);
1121static SENSOR_DEVICE_ATTR_2_RW(in6_max, voltage, MAX, 6);
1122static SENSOR_DEVICE_ATTR_2_RW(in6_min, voltage, MIN, 6);
1123static SENSOR_DEVICE_ATTR_2_RO(in6_alarm, voltage, ALARM, 30);
1124static SENSOR_DEVICE_ATTR_2_RO(temp1_input, temp, INPUT, 0);
1125static SENSOR_DEVICE_ATTR_2_RO(temp1_alarm, temp, ALARM, 0);
1126static SENSOR_DEVICE_ATTR_2_RO(temp1_fault, temp, FAULT, 0);
1127static SENSOR_DEVICE_ATTR_2_RW(temp1_max, temp, MAX, 0);
1128static SENSOR_DEVICE_ATTR_2_RW(temp1_min, temp, MIN, 0);
1129static SENSOR_DEVICE_ATTR_2_RW(temp1_offset, temp, OFFSET, 0);
1130static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_point1_temp, temp, AUTOMIN, 0);
1131static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_point2_temp, point2, 0, 0);
1132static SENSOR_DEVICE_ATTR_2_RW(temp1_crit, temp, THERM, 0);
1133static SENSOR_DEVICE_ATTR_2_RW(temp1_crit_hyst, temp, HYSTERSIS, 0);
1134static SENSOR_DEVICE_ATTR_2_RW(temp1_smoothing, temp_st, 0, 0);
1135static SENSOR_DEVICE_ATTR_2_RO(temp2_input, temp, INPUT, 1);
1136static SENSOR_DEVICE_ATTR_2_RO(temp2_alarm, temp, ALARM, 1);
1137static SENSOR_DEVICE_ATTR_2_RW(temp2_max, temp, MAX, 1);
1138static SENSOR_DEVICE_ATTR_2_RW(temp2_min, temp, MIN, 1);
1139static SENSOR_DEVICE_ATTR_2_RW(temp2_offset, temp, OFFSET, 1);
1140static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_point1_temp, temp, AUTOMIN, 1);
1141static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_point2_temp, point2, 0, 1);
1142static SENSOR_DEVICE_ATTR_2_RW(temp2_crit, temp, THERM, 1);
1143static SENSOR_DEVICE_ATTR_2_RW(temp2_crit_hyst, temp, HYSTERSIS, 1);
1144static SENSOR_DEVICE_ATTR_2_RW(temp2_smoothing, temp_st, 0, 1);
1145static SENSOR_DEVICE_ATTR_2_RO(temp3_input, temp, INPUT, 2);
1146static SENSOR_DEVICE_ATTR_2_RO(temp3_alarm, temp, ALARM, 2);
1147static SENSOR_DEVICE_ATTR_2_RO(temp3_fault, temp, FAULT, 2);
1148static SENSOR_DEVICE_ATTR_2_RW(temp3_max, temp, MAX, 2);
1149static SENSOR_DEVICE_ATTR_2_RW(temp3_min, temp, MIN, 2);
1150static SENSOR_DEVICE_ATTR_2_RW(temp3_offset, temp, OFFSET, 2);
1151static SENSOR_DEVICE_ATTR_2_RW(temp3_auto_point1_temp, temp, AUTOMIN, 2);
1152static SENSOR_DEVICE_ATTR_2_RW(temp3_auto_point2_temp, point2, 0, 2);
1153static SENSOR_DEVICE_ATTR_2_RW(temp3_crit, temp, THERM, 2);
1154static SENSOR_DEVICE_ATTR_2_RW(temp3_crit_hyst, temp, HYSTERSIS, 2);
1155static SENSOR_DEVICE_ATTR_2_RW(temp3_smoothing, temp_st, 0, 2);
1156static SENSOR_DEVICE_ATTR_2_RO(fan1_input, tach, INPUT, 0);
1157static SENSOR_DEVICE_ATTR_2_RW(fan1_min, tach, MIN, 0);
1158static SENSOR_DEVICE_ATTR_2_RO(fan1_alarm, tach, ALARM, 0);
1159static SENSOR_DEVICE_ATTR_2_RO(fan2_input, tach, INPUT, 1);
1160static SENSOR_DEVICE_ATTR_2_RW(fan2_min, tach, MIN, 1);
1161static SENSOR_DEVICE_ATTR_2_RO(fan2_alarm, tach, ALARM, 1);
1162static SENSOR_DEVICE_ATTR_2_RO(fan3_input, tach, INPUT, 2);
1163static SENSOR_DEVICE_ATTR_2_RW(fan3_min, tach, MIN, 2);
1164static SENSOR_DEVICE_ATTR_2_RO(fan3_alarm, tach, ALARM, 2);
1165static SENSOR_DEVICE_ATTR_2_RO(fan4_input, tach, INPUT, 3);
1166static SENSOR_DEVICE_ATTR_2_RW(fan4_min, tach, MIN, 3);
1167static SENSOR_DEVICE_ATTR_2_RO(fan4_alarm, tach, ALARM, 3);
1168static SENSOR_DEVICE_ATTR_2_RW(pwm1, pwm, INPUT, 0);
1169static SENSOR_DEVICE_ATTR_2_RW(pwm1_freq, pwmfreq, INPUT, 0);
1170static SENSOR_DEVICE_ATTR_2_RW(pwm1_enable, pwmctrl, INPUT, 0);
1171static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_channels_temp, pwmchan, INPUT, 0);
1172static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point1_pwm, pwm, MIN, 0);
1173static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point2_pwm, pwm, MAX, 0);
1174static SENSOR_DEVICE_ATTR_2_RW(pwm1_stall_disable, stall_disable, 0, 0);
1175static SENSOR_DEVICE_ATTR_2_RW(pwm2, pwm, INPUT, 1);
1176static SENSOR_DEVICE_ATTR_2_RW(pwm2_freq, pwmfreq, INPUT, 1);
1177static SENSOR_DEVICE_ATTR_2_RW(pwm2_enable, pwmctrl, INPUT, 1);
1178static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_channels_temp, pwmchan, INPUT, 1);
1179static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point1_pwm, pwm, MIN, 1);
1180static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point2_pwm, pwm, MAX, 1);
1181static SENSOR_DEVICE_ATTR_2_RW(pwm2_stall_disable, stall_disable, 0, 1);
1182static SENSOR_DEVICE_ATTR_2_RW(pwm3, pwm, INPUT, 2);
1183static SENSOR_DEVICE_ATTR_2_RW(pwm3_freq, pwmfreq, INPUT, 2);
1184static SENSOR_DEVICE_ATTR_2_RW(pwm3_enable, pwmctrl, INPUT, 2);
1185static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_channels_temp, pwmchan, INPUT, 2);
1186static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point1_pwm, pwm, MIN, 2);
1187static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point2_pwm, pwm, MAX, 2);
1188static SENSOR_DEVICE_ATTR_2_RW(pwm3_stall_disable, stall_disable, 0, 2);
1189
1190/* Non-standard name, might need revisiting */
1191static DEVICE_ATTR_RW(pwm_use_point2_pwm_at_crit);
1192
1193static DEVICE_ATTR_RW(vrm);
1194static DEVICE_ATTR_RO(cpu0_vid);
1195
1196static struct attribute *adt7475_attrs[] = {
1197 &sensor_dev_attr_in1_input.dev_attr.attr,
1198 &sensor_dev_attr_in1_max.dev_attr.attr,
1199 &sensor_dev_attr_in1_min.dev_attr.attr,
1200 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1201 &sensor_dev_attr_in2_input.dev_attr.attr,
1202 &sensor_dev_attr_in2_max.dev_attr.attr,
1203 &sensor_dev_attr_in2_min.dev_attr.attr,
1204 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1205 &sensor_dev_attr_temp1_input.dev_attr.attr,
1206 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1207 &sensor_dev_attr_temp1_fault.dev_attr.attr,
1208 &sensor_dev_attr_temp1_max.dev_attr.attr,
1209 &sensor_dev_attr_temp1_min.dev_attr.attr,
1210 &sensor_dev_attr_temp1_offset.dev_attr.attr,
1211 &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr,
1212 &sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr,
1213 &sensor_dev_attr_temp1_crit.dev_attr.attr,
1214 &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
1215 &sensor_dev_attr_temp1_smoothing.dev_attr.attr,
1216 &sensor_dev_attr_temp2_input.dev_attr.attr,
1217 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1218 &sensor_dev_attr_temp2_max.dev_attr.attr,
1219 &sensor_dev_attr_temp2_min.dev_attr.attr,
1220 &sensor_dev_attr_temp2_offset.dev_attr.attr,
1221 &sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr,
1222 &sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr,
1223 &sensor_dev_attr_temp2_crit.dev_attr.attr,
1224 &sensor_dev_attr_temp2_crit_hyst.dev_attr.attr,
1225 &sensor_dev_attr_temp2_smoothing.dev_attr.attr,
1226 &sensor_dev_attr_temp3_input.dev_attr.attr,
1227 &sensor_dev_attr_temp3_fault.dev_attr.attr,
1228 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1229 &sensor_dev_attr_temp3_max.dev_attr.attr,
1230 &sensor_dev_attr_temp3_min.dev_attr.attr,
1231 &sensor_dev_attr_temp3_offset.dev_attr.attr,
1232 &sensor_dev_attr_temp3_auto_point1_temp.dev_attr.attr,
1233 &sensor_dev_attr_temp3_auto_point2_temp.dev_attr.attr,
1234 &sensor_dev_attr_temp3_crit.dev_attr.attr,
1235 &sensor_dev_attr_temp3_crit_hyst.dev_attr.attr,
1236 &sensor_dev_attr_temp3_smoothing.dev_attr.attr,
1237 &sensor_dev_attr_fan1_input.dev_attr.attr,
1238 &sensor_dev_attr_fan1_min.dev_attr.attr,
1239 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1240 &sensor_dev_attr_fan2_input.dev_attr.attr,
1241 &sensor_dev_attr_fan2_min.dev_attr.attr,
1242 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1243 &sensor_dev_attr_fan3_input.dev_attr.attr,
1244 &sensor_dev_attr_fan3_min.dev_attr.attr,
1245 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1246 &sensor_dev_attr_pwm1.dev_attr.attr,
1247 &sensor_dev_attr_pwm1_freq.dev_attr.attr,
1248 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1249 &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
1250 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1251 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1252 &sensor_dev_attr_pwm1_stall_disable.dev_attr.attr,
1253 &sensor_dev_attr_pwm3.dev_attr.attr,
1254 &sensor_dev_attr_pwm3_freq.dev_attr.attr,
1255 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1256 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
1257 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1258 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1259 &sensor_dev_attr_pwm3_stall_disable.dev_attr.attr,
1260 &dev_attr_pwm_use_point2_pwm_at_crit.attr,
1261 NULL,
1262};
1263
1264static struct attribute *fan4_attrs[] = {
1265 &sensor_dev_attr_fan4_input.dev_attr.attr,
1266 &sensor_dev_attr_fan4_min.dev_attr.attr,
1267 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1268 NULL
1269};
1270
1271static struct attribute *pwm2_attrs[] = {
1272 &sensor_dev_attr_pwm2.dev_attr.attr,
1273 &sensor_dev_attr_pwm2_freq.dev_attr.attr,
1274 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1275 &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
1276 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1277 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1278 &sensor_dev_attr_pwm2_stall_disable.dev_attr.attr,
1279 NULL
1280};
1281
1282static struct attribute *in0_attrs[] = {
1283 &sensor_dev_attr_in0_input.dev_attr.attr,
1284 &sensor_dev_attr_in0_max.dev_attr.attr,
1285 &sensor_dev_attr_in0_min.dev_attr.attr,
1286 &sensor_dev_attr_in0_alarm.dev_attr.attr,
1287 NULL
1288};
1289
1290static struct attribute *in3_attrs[] = {
1291 &sensor_dev_attr_in3_input.dev_attr.attr,
1292 &sensor_dev_attr_in3_max.dev_attr.attr,
1293 &sensor_dev_attr_in3_min.dev_attr.attr,
1294 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1295 NULL
1296};
1297
1298static struct attribute *in4_attrs[] = {
1299 &sensor_dev_attr_in4_input.dev_attr.attr,
1300 &sensor_dev_attr_in4_max.dev_attr.attr,
1301 &sensor_dev_attr_in4_min.dev_attr.attr,
1302 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1303 NULL
1304};
1305
1306static struct attribute *in5_attrs[] = {
1307 &sensor_dev_attr_in5_input.dev_attr.attr,
1308 &sensor_dev_attr_in5_max.dev_attr.attr,
1309 &sensor_dev_attr_in5_min.dev_attr.attr,
1310 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1311 NULL
1312};
1313
1314static struct attribute *in6_attrs[] = {
1315 &sensor_dev_attr_in6_input.dev_attr.attr,
1316 &sensor_dev_attr_in6_max.dev_attr.attr,
1317 &sensor_dev_attr_in6_min.dev_attr.attr,
1318 &sensor_dev_attr_in6_alarm.dev_attr.attr,
1319 NULL
1320};
1321
1322static struct attribute *vid_attrs[] = {
1323 &dev_attr_cpu0_vid.attr,
1324 &dev_attr_vrm.attr,
1325 NULL
1326};
1327
1328static const struct attribute_group adt7475_attr_group = { .attrs = adt7475_attrs };
1329static const struct attribute_group fan4_attr_group = { .attrs = fan4_attrs };
1330static const struct attribute_group pwm2_attr_group = { .attrs = pwm2_attrs };
1331static const struct attribute_group in0_attr_group = { .attrs = in0_attrs };
1332static const struct attribute_group in3_attr_group = { .attrs = in3_attrs };
1333static const struct attribute_group in4_attr_group = { .attrs = in4_attrs };
1334static const struct attribute_group in5_attr_group = { .attrs = in5_attrs };
1335static const struct attribute_group in6_attr_group = { .attrs = in6_attrs };
1336static const struct attribute_group vid_attr_group = { .attrs = vid_attrs };
1337
1338static int adt7475_detect(struct i2c_client *client,
1339 struct i2c_board_info *info)
1340{
1341 struct i2c_adapter *adapter = client->adapter;
1342 int vendid, devid, devid2;
1343 const char *name;
1344
1345 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1346 return -ENODEV;
1347
1348 vendid = adt7475_read(REG_VENDID);
1349 devid2 = adt7475_read(REG_DEVID2);
1350 if (vendid != 0x41 || /* Analog Devices */
1351 (devid2 & 0xf8) != 0x68)
1352 return -ENODEV;
1353
1354 devid = adt7475_read(REG_DEVID);
1355 if (devid == 0x73)
1356 name = "adt7473";
1357 else if (devid == 0x75 && client->addr == 0x2e)
1358 name = "adt7475";
1359 else if (devid == 0x76)
1360 name = "adt7476";
1361 else if ((devid2 & 0xfc) == 0x6c)
1362 name = "adt7490";
1363 else {
1364 dev_dbg(&adapter->dev,
1365 "Couldn't detect an ADT7473/75/76/90 part at "
1366 "0x%02x\n", (unsigned int)client->addr);
1367 return -ENODEV;
1368 }
1369
1370 strscpy(info->type, name, I2C_NAME_SIZE);
1371
1372 return 0;
1373}
1374
1375static int adt7475_update_limits(struct i2c_client *client)
1376{
1377 struct adt7475_data *data = i2c_get_clientdata(client);
1378 int i;
1379 int ret;
1380
1381 ret = adt7475_read(REG_CONFIG4);
1382 if (ret < 0)
1383 return ret;
1384 data->config4 = ret;
1385
1386 ret = adt7475_read(REG_CONFIG5);
1387 if (ret < 0)
1388 return ret;
1389 data->config5 = ret;
1390
1391 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
1392 if (!(data->has_voltage & (1 << i)))
1393 continue;
1394 /* Adjust values so they match the input precision */
1395 ret = adt7475_read(VOLTAGE_MIN_REG(i));
1396 if (ret < 0)
1397 return ret;
1398 data->voltage[MIN][i] = ret << 2;
1399
1400 ret = adt7475_read(VOLTAGE_MAX_REG(i));
1401 if (ret < 0)
1402 return ret;
1403 data->voltage[MAX][i] = ret << 2;
1404 }
1405
1406 if (data->has_voltage & (1 << 5)) {
1407 ret = adt7475_read(REG_VTT_MIN);
1408 if (ret < 0)
1409 return ret;
1410 data->voltage[MIN][5] = ret << 2;
1411
1412 ret = adt7475_read(REG_VTT_MAX);
1413 if (ret < 0)
1414 return ret;
1415 data->voltage[MAX][5] = ret << 2;
1416 }
1417
1418 if (data->has_voltage & (1 << 6)) {
1419 ret = adt7475_read(REG_IMON_MIN);
1420 if (ret < 0)
1421 return ret;
1422 data->voltage[MIN][6] = ret << 2;
1423
1424 ret = adt7475_read(REG_IMON_MAX);
1425 if (ret < 0)
1426 return ret;
1427 data->voltage[MAX][6] = ret << 2;
1428 }
1429
1430 for (i = 0; i < ADT7475_TEMP_COUNT; i++) {
1431 /* Adjust values so they match the input precision */
1432 ret = adt7475_read(TEMP_MIN_REG(i));
1433 if (ret < 0)
1434 return ret;
1435 data->temp[MIN][i] = ret << 2;
1436
1437 ret = adt7475_read(TEMP_MAX_REG(i));
1438 if (ret < 0)
1439 return ret;
1440 data->temp[MAX][i] = ret << 2;
1441
1442 ret = adt7475_read(TEMP_TMIN_REG(i));
1443 if (ret < 0)
1444 return ret;
1445 data->temp[AUTOMIN][i] = ret << 2;
1446
1447 ret = adt7475_read(TEMP_THERM_REG(i));
1448 if (ret < 0)
1449 return ret;
1450 data->temp[THERM][i] = ret << 2;
1451
1452 ret = adt7475_read(TEMP_OFFSET_REG(i));
1453 if (ret < 0)
1454 return ret;
1455 data->temp[OFFSET][i] = ret;
1456 }
1457 adt7475_read_hystersis(client);
1458
1459 for (i = 0; i < ADT7475_TACH_COUNT; i++) {
1460 if (i == 3 && !data->has_fan4)
1461 continue;
1462 ret = adt7475_read_word(client, TACH_MIN_REG(i));
1463 if (ret < 0)
1464 return ret;
1465 data->tach[MIN][i] = ret;
1466 }
1467
1468 for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1469 if (i == 1 && !data->has_pwm2)
1470 continue;
1471 ret = adt7475_read(PWM_MAX_REG(i));
1472 if (ret < 0)
1473 return ret;
1474 data->pwm[MAX][i] = ret;
1475
1476 ret = adt7475_read(PWM_MIN_REG(i));
1477 if (ret < 0)
1478 return ret;
1479 data->pwm[MIN][i] = ret;
1480 /* Set the channel and control information */
1481 adt7475_read_pwm(client, i);
1482 }
1483
1484 ret = adt7475_read(TEMP_TRANGE_REG(0));
1485 if (ret < 0)
1486 return ret;
1487 data->range[0] = ret;
1488
1489 ret = adt7475_read(TEMP_TRANGE_REG(1));
1490 if (ret < 0)
1491 return ret;
1492 data->range[1] = ret;
1493
1494 ret = adt7475_read(TEMP_TRANGE_REG(2));
1495 if (ret < 0)
1496 return ret;
1497 data->range[2] = ret;
1498
1499 return 0;
1500}
1501
1502static int load_config3(const struct i2c_client *client, const char *propname)
1503{
1504 const char *function;
1505 u8 config3;
1506 int ret;
1507
1508 ret = device_property_read_string(&client->dev, propname, &function);
1509 if (!ret) {
1510 ret = adt7475_read(REG_CONFIG3);
1511 if (ret < 0)
1512 return ret;
1513
1514 config3 = ret & ~CONFIG3_SMBALERT;
1515 if (!strcmp("pwm2", function))
1516 ;
1517 else if (!strcmp("smbalert#", function))
1518 config3 |= CONFIG3_SMBALERT;
1519 else
1520 return -EINVAL;
1521
1522 return i2c_smbus_write_byte_data(client, REG_CONFIG3, config3);
1523 }
1524
1525 return 0;
1526}
1527
1528static int load_config4(const struct i2c_client *client, const char *propname)
1529{
1530 const char *function;
1531 u8 config4;
1532 int ret;
1533
1534 ret = device_property_read_string(&client->dev, propname, &function);
1535 if (!ret) {
1536 ret = adt7475_read(REG_CONFIG4);
1537 if (ret < 0)
1538 return ret;
1539
1540 config4 = ret & ~CONFIG4_PINFUNC;
1541
1542 if (!strcmp("tach4", function))
1543 ;
1544 else if (!strcmp("therm#", function))
1545 config4 |= CONFIG4_THERM;
1546 else if (!strcmp("smbalert#", function))
1547 config4 |= CONFIG4_SMBALERT;
1548 else if (!strcmp("gpio", function))
1549 config4 |= CONFIG4_PINFUNC;
1550 else
1551 return -EINVAL;
1552
1553 return i2c_smbus_write_byte_data(client, REG_CONFIG4, config4);
1554 }
1555
1556 return 0;
1557}
1558
1559static int load_config(const struct i2c_client *client, enum chips chip)
1560{
1561 int err;
1562 const char *prop1, *prop2;
1563
1564 switch (chip) {
1565 case adt7473:
1566 case adt7475:
1567 prop1 = "adi,pin5-function";
1568 prop2 = "adi,pin9-function";
1569 break;
1570 case adt7476:
1571 case adt7490:
1572 prop1 = "adi,pin10-function";
1573 prop2 = "adi,pin14-function";
1574 break;
1575 }
1576
1577 err = load_config3(client, prop1);
1578 if (err) {
1579 dev_err(&client->dev, "failed to configure %s\n", prop1);
1580 return err;
1581 }
1582
1583 err = load_config4(client, prop2);
1584 if (err) {
1585 dev_err(&client->dev, "failed to configure %s\n", prop2);
1586 return err;
1587 }
1588
1589 return 0;
1590}
1591
1592static int set_property_bit(const struct i2c_client *client, char *property,
1593 u8 *config, u8 bit_index)
1594{
1595 u32 prop_value = 0;
1596 int ret = device_property_read_u32(&client->dev, property,
1597 &prop_value);
1598
1599 if (!ret) {
1600 if (prop_value)
1601 *config |= (1 << bit_index);
1602 else
1603 *config &= ~(1 << bit_index);
1604 }
1605
1606 return ret;
1607}
1608
1609static int load_attenuators(const struct i2c_client *client, enum chips chip,
1610 struct adt7475_data *data)
1611{
1612 switch (chip) {
1613 case adt7476:
1614 case adt7490:
1615 set_property_bit(client, "adi,bypass-attenuator-in0",
1616 &data->config4, 4);
1617 set_property_bit(client, "adi,bypass-attenuator-in1",
1618 &data->config4, 5);
1619 set_property_bit(client, "adi,bypass-attenuator-in3",
1620 &data->config4, 6);
1621 set_property_bit(client, "adi,bypass-attenuator-in4",
1622 &data->config4, 7);
1623
1624 return i2c_smbus_write_byte_data(client, REG_CONFIG4,
1625 data->config4);
1626 case adt7473:
1627 case adt7475:
1628 set_property_bit(client, "adi,bypass-attenuator-in1",
1629 &data->config2, 5);
1630
1631 return i2c_smbus_write_byte_data(client, REG_CONFIG2,
1632 data->config2);
1633 }
1634
1635 return 0;
1636}
1637
1638static int adt7475_set_pwm_polarity(struct i2c_client *client)
1639{
1640 u32 states[ADT7475_PWM_COUNT];
1641 int ret, i;
1642 u8 val;
1643
1644 ret = device_property_read_u32_array(&client->dev,
1645 "adi,pwm-active-state", states,
1646 ARRAY_SIZE(states));
1647 if (ret)
1648 return ret;
1649
1650 for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1651 ret = adt7475_read(PWM_CONFIG_REG(i));
1652 if (ret < 0)
1653 return ret;
1654 val = ret;
1655 if (states[i])
1656 val &= ~BIT(4);
1657 else
1658 val |= BIT(4);
1659
1660 ret = i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(i), val);
1661 if (ret)
1662 return ret;
1663 }
1664
1665 return 0;
1666}
1667
1668struct adt7475_pwm_config {
1669 int index;
1670 int freq;
1671 int flags;
1672 int duty;
1673};
1674
1675static int _adt7475_pwm_properties_parse_args(u32 args[4], struct adt7475_pwm_config *cfg)
1676{
1677 int freq_hz;
1678 int duty;
1679
1680 if (args[1] == 0)
1681 return -EINVAL;
1682
1683 freq_hz = 1000000000UL / args[1];
1684 if (args[3] >= args[1])
1685 duty = 255;
1686 else
1687 duty = div_u64(255ULL * args[3], args[1]);
1688
1689 cfg->index = args[0];
1690 cfg->freq = find_closest(freq_hz, pwmfreq_table, ARRAY_SIZE(pwmfreq_table));
1691 cfg->flags = args[2];
1692 cfg->duty = duty;
1693
1694 return 0;
1695}
1696
1697static int adt7475_pwm_properties_parse_reference_args(struct fwnode_handle *fwnode,
1698 struct adt7475_pwm_config *cfg)
1699{
1700 int ret, i;
1701 struct fwnode_reference_args rargs = {};
1702 u32 args[4] = {};
1703
1704 ret = fwnode_property_get_reference_args(fwnode, "pwms", "#pwm-cells", 0, 0, &rargs);
1705 if (ret)
1706 return ret;
1707
1708 if (rargs.nargs != 3 && rargs.nargs != 4) {
1709 fwnode_handle_put(rargs.fwnode);
1710 return -EINVAL;
1711 }
1712
1713 /* Let duty_cycle default to period */
1714 args[3] = rargs.args[1];
1715
1716 for (i = 0; i < rargs.nargs; i++)
1717 args[i] = rargs.args[i];
1718
1719 ret = _adt7475_pwm_properties_parse_args(args, cfg);
1720
1721 fwnode_handle_put(rargs.fwnode);
1722
1723 return ret;
1724}
1725
1726static int adt7475_pwm_properties_parse_args(struct fwnode_handle *fwnode,
1727 struct adt7475_pwm_config *cfg)
1728{
1729 int ret;
1730 u32 args[4] = {};
1731 size_t n_vals = fwnode_property_count_u32(fwnode, "pwms");
1732
1733 if (n_vals != 3 && n_vals != 4)
1734 return -EOVERFLOW;
1735
1736 ret = fwnode_property_read_u32_array(fwnode, "pwms", args, n_vals);
1737 if (ret)
1738 return ret;
1739
1740 /*
1741 * If there are no item to define the duty_cycle, default it to the
1742 * period.
1743 */
1744 if (n_vals == 3)
1745 args[3] = args[1];
1746
1747 return _adt7475_pwm_properties_parse_args(args, cfg);
1748}
1749
1750static int adt7475_fan_pwm_config(struct i2c_client *client)
1751{
1752 struct adt7475_data *data = i2c_get_clientdata(client);
1753 struct adt7475_pwm_config cfg = {};
1754 int ret;
1755
1756 device_for_each_child_node_scoped(&client->dev, child) {
1757 if (!fwnode_property_present(child, "pwms"))
1758 continue;
1759
1760 if (is_of_node(child))
1761 ret = adt7475_pwm_properties_parse_reference_args(child, &cfg);
1762 else
1763 ret = adt7475_pwm_properties_parse_args(child, &cfg);
1764
1765 if (cfg.index >= ADT7475_PWM_COUNT)
1766 return -EINVAL;
1767
1768 ret = adt7475_read(PWM_CONFIG_REG(cfg.index));
1769 if (ret < 0)
1770 return ret;
1771 data->pwm[CONTROL][cfg.index] = ret;
1772 if (cfg.flags & PWM_POLARITY_INVERTED)
1773 data->pwm[CONTROL][cfg.index] |= BIT(4);
1774 else
1775 data->pwm[CONTROL][cfg.index] &= ~BIT(4);
1776
1777 /* Force to manual mode so PWM values take effect */
1778 data->pwm[CONTROL][cfg.index] &= ~0xE0;
1779 data->pwm[CONTROL][cfg.index] |= 0x07 << 5;
1780
1781 ret = i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(cfg.index),
1782 data->pwm[CONTROL][cfg.index]);
1783 if (ret)
1784 return ret;
1785
1786 data->pwm[INPUT][cfg.index] = cfg.duty;
1787 ret = i2c_smbus_write_byte_data(client, PWM_REG(cfg.index),
1788 data->pwm[INPUT][cfg.index]);
1789 if (ret)
1790 return ret;
1791
1792 data->range[cfg.index] = adt7475_read(TEMP_TRANGE_REG(cfg.index));
1793 data->range[cfg.index] &= ~0xf;
1794 data->range[cfg.index] |= cfg.freq;
1795
1796 ret = i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(cfg.index),
1797 data->range[cfg.index]);
1798 if (ret)
1799 return ret;
1800 }
1801
1802 return 0;
1803}
1804
1805static int adt7475_probe(struct i2c_client *client)
1806{
1807 enum chips chip;
1808 static const char * const names[] = {
1809 [adt7473] = "ADT7473",
1810 [adt7475] = "ADT7475",
1811 [adt7476] = "ADT7476",
1812 [adt7490] = "ADT7490",
1813 };
1814
1815 struct adt7475_data *data;
1816 struct device *hwmon_dev;
1817 int i, ret = 0, revision, group_num = 0;
1818 u8 config3;
1819
1820 data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
1821 if (data == NULL)
1822 return -ENOMEM;
1823
1824 mutex_init(&data->lock);
1825 data->client = client;
1826 i2c_set_clientdata(client, data);
1827
1828 chip = (uintptr_t)i2c_get_match_data(client);
1829
1830 /* Initialize device-specific values */
1831 switch (chip) {
1832 case adt7476:
1833 data->has_voltage = 0x0e; /* in1 to in3 */
1834 revision = adt7475_read(REG_DEVID2) & 0x07;
1835 break;
1836 case adt7490:
1837 data->has_voltage = 0x7e; /* in1 to in6 */
1838 revision = adt7475_read(REG_DEVID2) & 0x03;
1839 if (revision == 0x03)
1840 revision += adt7475_read(REG_DEVREV2);
1841 break;
1842 default:
1843 data->has_voltage = 0x06; /* in1, in2 */
1844 revision = adt7475_read(REG_DEVID2) & 0x07;
1845 }
1846
1847 ret = load_config(client, chip);
1848 if (ret)
1849 return ret;
1850
1851 config3 = adt7475_read(REG_CONFIG3);
1852 /* Pin PWM2 may alternatively be used for ALERT output */
1853 if (!(config3 & CONFIG3_SMBALERT))
1854 data->has_pwm2 = 1;
1855 /* Meaning of this bit is inverted for the ADT7473-1 */
1856 if (chip == adt7473 && revision >= 1)
1857 data->has_pwm2 = !data->has_pwm2;
1858
1859 data->config4 = adt7475_read(REG_CONFIG4);
1860 /* Pin TACH4 may alternatively be used for THERM */
1861 if ((data->config4 & CONFIG4_PINFUNC) == 0x0)
1862 data->has_fan4 = 1;
1863
1864 /*
1865 * THERM configuration is more complex on the ADT7476 and ADT7490,
1866 * because 2 different pins (TACH4 and +2.5 Vin) can be used for
1867 * this function
1868 */
1869 if (chip == adt7490) {
1870 if ((data->config4 & CONFIG4_PINFUNC) == 0x1 &&
1871 !(config3 & CONFIG3_THERM))
1872 data->has_fan4 = 1;
1873 }
1874 if (chip == adt7476 || chip == adt7490) {
1875 if (!(config3 & CONFIG3_THERM) ||
1876 (data->config4 & CONFIG4_PINFUNC) == 0x1)
1877 data->has_voltage |= (1 << 0); /* in0 */
1878 }
1879
1880 /*
1881 * On the ADT7476, the +12V input pin may instead be used as VID5,
1882 * and VID pins may alternatively be used as GPIO
1883 */
1884 if (chip == adt7476) {
1885 u8 vid = adt7475_read(REG_VID);
1886 if (!(vid & VID_VIDSEL))
1887 data->has_voltage |= (1 << 4); /* in4 */
1888
1889 data->has_vid = !(adt7475_read(REG_CONFIG5) & CONFIG5_VIDGPIO);
1890 }
1891
1892 /* Voltage attenuators can be bypassed, globally or individually */
1893 data->config2 = adt7475_read(REG_CONFIG2);
1894 ret = load_attenuators(client, chip, data);
1895 if (ret)
1896 dev_warn(&client->dev, "Error configuring attenuator bypass\n");
1897
1898 if (data->config2 & CONFIG2_ATTN) {
1899 data->bypass_attn = (0x3 << 3) | 0x3;
1900 } else {
1901 data->bypass_attn = ((data->config4 & CONFIG4_ATTN_IN10) >> 4) |
1902 ((data->config4 & CONFIG4_ATTN_IN43) >> 3);
1903 }
1904 data->bypass_attn &= data->has_voltage;
1905
1906 /*
1907 * Call adt7475_read_pwm for all pwm's as this will reprogram any
1908 * pwm's which are disabled to manual mode with 0% duty cycle
1909 */
1910 for (i = 0; i < ADT7475_PWM_COUNT; i++)
1911 adt7475_read_pwm(client, i);
1912
1913 ret = adt7475_set_pwm_polarity(client);
1914 if (ret && ret != -EINVAL)
1915 dev_warn(&client->dev, "Error configuring pwm polarity\n");
1916
1917 ret = adt7475_fan_pwm_config(client);
1918 if (ret)
1919 dev_warn(&client->dev, "Error %d configuring fan/pwm\n", ret);
1920
1921 /* Start monitoring */
1922 switch (chip) {
1923 case adt7475:
1924 case adt7476:
1925 i2c_smbus_write_byte_data(client, REG_CONFIG1,
1926 adt7475_read(REG_CONFIG1) | 0x01);
1927 break;
1928 default:
1929 break;
1930 }
1931
1932 data->groups[group_num++] = &adt7475_attr_group;
1933
1934 /* Features that can be disabled individually */
1935 if (data->has_fan4) {
1936 data->groups[group_num++] = &fan4_attr_group;
1937 }
1938 if (data->has_pwm2) {
1939 data->groups[group_num++] = &pwm2_attr_group;
1940 }
1941 if (data->has_voltage & (1 << 0)) {
1942 data->groups[group_num++] = &in0_attr_group;
1943 }
1944 if (data->has_voltage & (1 << 3)) {
1945 data->groups[group_num++] = &in3_attr_group;
1946 }
1947 if (data->has_voltage & (1 << 4)) {
1948 data->groups[group_num++] = &in4_attr_group;
1949 }
1950 if (data->has_voltage & (1 << 5)) {
1951 data->groups[group_num++] = &in5_attr_group;
1952 }
1953 if (data->has_voltage & (1 << 6)) {
1954 data->groups[group_num++] = &in6_attr_group;
1955 }
1956 if (data->has_vid) {
1957 data->vrm = vid_which_vrm();
1958 data->groups[group_num] = &vid_attr_group;
1959 }
1960
1961 /* register device with all the acquired attributes */
1962 hwmon_dev = devm_hwmon_device_register_with_groups(&client->dev,
1963 client->name, data,
1964 data->groups);
1965
1966 if (IS_ERR(hwmon_dev)) {
1967 ret = PTR_ERR(hwmon_dev);
1968 return ret;
1969 }
1970
1971 dev_info(&client->dev, "%s device, revision %d\n",
1972 names[chip], revision);
1973 if ((data->has_voltage & 0x11) || data->has_fan4 || data->has_pwm2)
1974 dev_info(&client->dev, "Optional features:%s%s%s%s%s\n",
1975 (data->has_voltage & (1 << 0)) ? " in0" : "",
1976 (data->has_voltage & (1 << 4)) ? " in4" : "",
1977 data->has_fan4 ? " fan4" : "",
1978 data->has_pwm2 ? " pwm2" : "",
1979 data->has_vid ? " vid" : "");
1980 if (data->bypass_attn)
1981 dev_info(&client->dev, "Bypassing attenuators on:%s%s%s%s\n",
1982 (data->bypass_attn & (1 << 0)) ? " in0" : "",
1983 (data->bypass_attn & (1 << 1)) ? " in1" : "",
1984 (data->bypass_attn & (1 << 3)) ? " in3" : "",
1985 (data->bypass_attn & (1 << 4)) ? " in4" : "");
1986
1987 /* Limits and settings, should never change update more than once */
1988 ret = adt7475_update_limits(client);
1989 if (ret)
1990 return ret;
1991
1992 return 0;
1993}
1994
1995static struct i2c_driver adt7475_driver = {
1996 .class = I2C_CLASS_HWMON,
1997 .driver = {
1998 .name = "adt7475",
1999 .of_match_table = adt7475_of_match,
2000 },
2001 .probe = adt7475_probe,
2002 .id_table = adt7475_id,
2003 .detect = adt7475_detect,
2004 .address_list = normal_i2c,
2005};
2006
2007static void adt7475_read_hystersis(struct i2c_client *client)
2008{
2009 struct adt7475_data *data = i2c_get_clientdata(client);
2010
2011 data->temp[HYSTERSIS][0] = (u16) adt7475_read(REG_REMOTE1_HYSTERSIS);
2012 data->temp[HYSTERSIS][1] = data->temp[HYSTERSIS][0];
2013 data->temp[HYSTERSIS][2] = (u16) adt7475_read(REG_REMOTE2_HYSTERSIS);
2014}
2015
2016static void adt7475_read_pwm(struct i2c_client *client, int index)
2017{
2018 struct adt7475_data *data = i2c_get_clientdata(client);
2019 unsigned int v;
2020
2021 data->pwm[CONTROL][index] = adt7475_read(PWM_CONFIG_REG(index));
2022
2023 /*
2024 * Figure out the internal value for pwmctrl and pwmchan
2025 * based on the current settings
2026 */
2027 v = (data->pwm[CONTROL][index] >> 5) & 7;
2028
2029 if (v == 3)
2030 data->pwmctl[index] = 0;
2031 else if (v == 7)
2032 data->pwmctl[index] = 1;
2033 else if (v == 4) {
2034 /*
2035 * The fan is disabled - we don't want to
2036 * support that, so change to manual mode and
2037 * set the duty cycle to 0 instead
2038 */
2039 data->pwm[INPUT][index] = 0;
2040 data->pwm[CONTROL][index] &= ~0xE0;
2041 data->pwm[CONTROL][index] |= (7 << 5);
2042
2043 i2c_smbus_write_byte_data(client, PWM_REG(index),
2044 data->pwm[INPUT][index]);
2045
2046 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
2047 data->pwm[CONTROL][index]);
2048
2049 data->pwmctl[index] = 1;
2050 } else {
2051 data->pwmctl[index] = 2;
2052
2053 switch (v) {
2054 case 0:
2055 data->pwmchan[index] = 1;
2056 break;
2057 case 1:
2058 data->pwmchan[index] = 2;
2059 break;
2060 case 2:
2061 data->pwmchan[index] = 4;
2062 break;
2063 case 5:
2064 data->pwmchan[index] = 6;
2065 break;
2066 case 6:
2067 data->pwmchan[index] = 7;
2068 break;
2069 }
2070 }
2071}
2072
2073static int adt7475_update_measure(struct device *dev)
2074{
2075 struct adt7475_data *data = dev_get_drvdata(dev);
2076 struct i2c_client *client = data->client;
2077 u16 ext;
2078 int i;
2079 int ret;
2080
2081 ret = adt7475_read(REG_STATUS2);
2082 if (ret < 0)
2083 return ret;
2084 data->alarms = ret << 8;
2085
2086 ret = adt7475_read(REG_STATUS1);
2087 if (ret < 0)
2088 return ret;
2089 data->alarms |= ret;
2090
2091 ret = adt7475_read(REG_EXTEND2);
2092 if (ret < 0)
2093 return ret;
2094
2095 ext = (ret << 8);
2096
2097 ret = adt7475_read(REG_EXTEND1);
2098 if (ret < 0)
2099 return ret;
2100
2101 ext |= ret;
2102
2103 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
2104 if (!(data->has_voltage & (1 << i)))
2105 continue;
2106 ret = adt7475_read(VOLTAGE_REG(i));
2107 if (ret < 0)
2108 return ret;
2109 data->voltage[INPUT][i] =
2110 (ret << 2) |
2111 ((ext >> (i * 2)) & 3);
2112 }
2113
2114 for (i = 0; i < ADT7475_TEMP_COUNT; i++) {
2115 ret = adt7475_read(TEMP_REG(i));
2116 if (ret < 0)
2117 return ret;
2118 data->temp[INPUT][i] =
2119 (ret << 2) |
2120 ((ext >> ((i + 5) * 2)) & 3);
2121 }
2122
2123 if (data->has_voltage & (1 << 5)) {
2124 ret = adt7475_read(REG_STATUS4);
2125 if (ret < 0)
2126 return ret;
2127 data->alarms |= ret << 24;
2128
2129 ret = adt7475_read(REG_EXTEND3);
2130 if (ret < 0)
2131 return ret;
2132 ext = ret;
2133
2134 ret = adt7475_read(REG_VTT);
2135 if (ret < 0)
2136 return ret;
2137 data->voltage[INPUT][5] = ret << 2 |
2138 ((ext >> 4) & 3);
2139 }
2140
2141 if (data->has_voltage & (1 << 6)) {
2142 ret = adt7475_read(REG_STATUS4);
2143 if (ret < 0)
2144 return ret;
2145 data->alarms |= ret << 24;
2146
2147 ret = adt7475_read(REG_EXTEND3);
2148 if (ret < 0)
2149 return ret;
2150 ext = ret;
2151
2152 ret = adt7475_read(REG_IMON);
2153 if (ret < 0)
2154 return ret;
2155 data->voltage[INPUT][6] = ret << 2 |
2156 ((ext >> 6) & 3);
2157 }
2158
2159 for (i = 0; i < ADT7475_TACH_COUNT; i++) {
2160 if (i == 3 && !data->has_fan4)
2161 continue;
2162 ret = adt7475_read_word(client, TACH_REG(i));
2163 if (ret < 0)
2164 return ret;
2165 data->tach[INPUT][i] = ret;
2166 }
2167
2168 /* Updated by hw when in auto mode */
2169 for (i = 0; i < ADT7475_PWM_COUNT; i++) {
2170 if (i == 1 && !data->has_pwm2)
2171 continue;
2172 ret = adt7475_read(PWM_REG(i));
2173 if (ret < 0)
2174 return ret;
2175 data->pwm[INPUT][i] = ret;
2176 }
2177
2178 if (data->has_vid) {
2179 ret = adt7475_read(REG_VID);
2180 if (ret < 0)
2181 return ret;
2182 data->vid = ret & 0x3f;
2183 }
2184
2185 return 0;
2186}
2187
2188static struct adt7475_data *adt7475_update_device(struct device *dev)
2189{
2190 struct adt7475_data *data = dev_get_drvdata(dev);
2191 int ret;
2192
2193 mutex_lock(&data->lock);
2194
2195 /* Measurement values update every 2 seconds */
2196 if (time_after(jiffies, data->measure_updated + HZ * 2) ||
2197 !data->valid) {
2198 ret = adt7475_update_measure(dev);
2199 if (ret) {
2200 data->valid = false;
2201 mutex_unlock(&data->lock);
2202 return ERR_PTR(ret);
2203 }
2204 data->measure_updated = jiffies;
2205 data->valid = true;
2206 }
2207
2208 mutex_unlock(&data->lock);
2209
2210 return data;
2211}
2212
2213module_i2c_driver(adt7475_driver);
2214
2215MODULE_AUTHOR("Advanced Micro Devices, Inc");
2216MODULE_DESCRIPTION("adt7475 driver");
2217MODULE_LICENSE("GPL");