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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 <jordan@cosmicpenguin.net>
6 * Copyright (C) 2008 Hans de Goede <hdegoede@redhat.com>
7 * Copyright (C) 2009 Jean Delvare <jdelvare@suse.de>
8 *
9 * Derived from the lm83 driver by Jean Delvare
10 */
11
12#include <linux/module.h>
13#include <linux/of_device.h>
14#include <linux/init.h>
15#include <linux/slab.h>
16#include <linux/i2c.h>
17#include <linux/hwmon.h>
18#include <linux/hwmon-sysfs.h>
19#include <linux/hwmon-vid.h>
20#include <linux/err.h>
21#include <linux/jiffies.h>
22#include <linux/of.h>
23#include <linux/util_macros.h>
24
25/* Indexes for the sysfs hooks */
26
27#define INPUT 0
28#define MIN 1
29#define MAX 2
30#define CONTROL 3
31#define OFFSET 3
32#define AUTOMIN 4
33#define THERM 5
34#define HYSTERSIS 6
35
36/*
37 * These are unique identifiers for the sysfs functions - unlike the
38 * numbers above, these are not also indexes into an array
39 */
40
41#define ALARM 9
42#define FAULT 10
43
44/* 7475 Common Registers */
45
46#define REG_DEVREV2 0x12 /* ADT7490 only */
47
48#define REG_VTT 0x1E /* ADT7490 only */
49#define REG_EXTEND3 0x1F /* ADT7490 only */
50
51#define REG_VOLTAGE_BASE 0x20
52#define REG_TEMP_BASE 0x25
53#define REG_TACH_BASE 0x28
54#define REG_PWM_BASE 0x30
55#define REG_PWM_MAX_BASE 0x38
56
57#define REG_DEVID 0x3D
58#define REG_VENDID 0x3E
59#define REG_DEVID2 0x3F
60
61#define REG_CONFIG1 0x40
62
63#define REG_STATUS1 0x41
64#define REG_STATUS2 0x42
65
66#define REG_VID 0x43 /* ADT7476 only */
67
68#define REG_VOLTAGE_MIN_BASE 0x44
69#define REG_VOLTAGE_MAX_BASE 0x45
70
71#define REG_TEMP_MIN_BASE 0x4E
72#define REG_TEMP_MAX_BASE 0x4F
73
74#define REG_TACH_MIN_BASE 0x54
75
76#define REG_PWM_CONFIG_BASE 0x5C
77
78#define REG_TEMP_TRANGE_BASE 0x5F
79
80#define REG_ENHANCE_ACOUSTICS1 0x62
81#define REG_ENHANCE_ACOUSTICS2 0x63
82
83#define REG_PWM_MIN_BASE 0x64
84
85#define REG_TEMP_TMIN_BASE 0x67
86#define REG_TEMP_THERM_BASE 0x6A
87
88#define REG_REMOTE1_HYSTERSIS 0x6D
89#define REG_REMOTE2_HYSTERSIS 0x6E
90
91#define REG_TEMP_OFFSET_BASE 0x70
92
93#define REG_CONFIG2 0x73
94
95#define REG_EXTEND1 0x76
96#define REG_EXTEND2 0x77
97
98#define REG_CONFIG3 0x78
99#define REG_CONFIG5 0x7C
100#define REG_CONFIG4 0x7D
101
102#define REG_STATUS4 0x81 /* ADT7490 only */
103
104#define REG_VTT_MIN 0x84 /* ADT7490 only */
105#define REG_VTT_MAX 0x86 /* ADT7490 only */
106
107#define VID_VIDSEL 0x80 /* ADT7476 only */
108
109#define CONFIG2_ATTN 0x20
110
111#define CONFIG3_SMBALERT 0x01
112#define CONFIG3_THERM 0x02
113
114#define CONFIG4_PINFUNC 0x03
115#define CONFIG4_MAXDUTY 0x08
116#define CONFIG4_ATTN_IN10 0x30
117#define CONFIG4_ATTN_IN43 0xC0
118
119#define CONFIG5_TWOSCOMP 0x01
120#define CONFIG5_TEMPOFFSET 0x02
121#define CONFIG5_VIDGPIO 0x10 /* ADT7476 only */
122
123/* ADT7475 Settings */
124
125#define ADT7475_VOLTAGE_COUNT 5 /* Not counting Vtt */
126#define ADT7475_TEMP_COUNT 3
127#define ADT7475_TACH_COUNT 4
128#define ADT7475_PWM_COUNT 3
129
130/* Macro to read the registers */
131
132#define adt7475_read(reg) i2c_smbus_read_byte_data(client, (reg))
133
134/* Macros to easily index the registers */
135
136#define TACH_REG(idx) (REG_TACH_BASE + ((idx) * 2))
137#define TACH_MIN_REG(idx) (REG_TACH_MIN_BASE + ((idx) * 2))
138
139#define PWM_REG(idx) (REG_PWM_BASE + (idx))
140#define PWM_MAX_REG(idx) (REG_PWM_MAX_BASE + (idx))
141#define PWM_MIN_REG(idx) (REG_PWM_MIN_BASE + (idx))
142#define PWM_CONFIG_REG(idx) (REG_PWM_CONFIG_BASE + (idx))
143
144#define VOLTAGE_REG(idx) (REG_VOLTAGE_BASE + (idx))
145#define VOLTAGE_MIN_REG(idx) (REG_VOLTAGE_MIN_BASE + ((idx) * 2))
146#define VOLTAGE_MAX_REG(idx) (REG_VOLTAGE_MAX_BASE + ((idx) * 2))
147
148#define TEMP_REG(idx) (REG_TEMP_BASE + (idx))
149#define TEMP_MIN_REG(idx) (REG_TEMP_MIN_BASE + ((idx) * 2))
150#define TEMP_MAX_REG(idx) (REG_TEMP_MAX_BASE + ((idx) * 2))
151#define TEMP_TMIN_REG(idx) (REG_TEMP_TMIN_BASE + (idx))
152#define TEMP_THERM_REG(idx) (REG_TEMP_THERM_BASE + (idx))
153#define TEMP_OFFSET_REG(idx) (REG_TEMP_OFFSET_BASE + (idx))
154#define TEMP_TRANGE_REG(idx) (REG_TEMP_TRANGE_BASE + (idx))
155
156static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
157
158enum chips { adt7473, adt7475, adt7476, adt7490 };
159
160static const struct i2c_device_id adt7475_id[] = {
161 { "adt7473", adt7473 },
162 { "adt7475", adt7475 },
163 { "adt7476", adt7476 },
164 { "adt7490", adt7490 },
165 { }
166};
167MODULE_DEVICE_TABLE(i2c, adt7475_id);
168
169static const struct of_device_id __maybe_unused adt7475_of_match[] = {
170 {
171 .compatible = "adi,adt7473",
172 .data = (void *)adt7473
173 },
174 {
175 .compatible = "adi,adt7475",
176 .data = (void *)adt7475
177 },
178 {
179 .compatible = "adi,adt7476",
180 .data = (void *)adt7476
181 },
182 {
183 .compatible = "adi,adt7490",
184 .data = (void *)adt7490
185 },
186 { },
187};
188MODULE_DEVICE_TABLE(of, adt7475_of_match);
189
190struct adt7475_data {
191 struct i2c_client *client;
192 struct mutex lock;
193
194 unsigned long measure_updated;
195 bool valid;
196
197 u8 config2;
198 u8 config4;
199 u8 config5;
200 u8 has_voltage;
201 u8 bypass_attn; /* Bypass voltage attenuator */
202 u8 has_pwm2:1;
203 u8 has_fan4:1;
204 u8 has_vid:1;
205 u32 alarms;
206 u16 voltage[3][6];
207 u16 temp[7][3];
208 u16 tach[2][4];
209 u8 pwm[4][3];
210 u8 range[3];
211 u8 pwmctl[3];
212 u8 pwmchan[3];
213 u8 enh_acoustics[2];
214
215 u8 vid;
216 u8 vrm;
217 const struct attribute_group *groups[9];
218};
219
220static struct i2c_driver adt7475_driver;
221static struct adt7475_data *adt7475_update_device(struct device *dev);
222static void adt7475_read_hystersis(struct i2c_client *client);
223static void adt7475_read_pwm(struct i2c_client *client, int index);
224
225/* Given a temp value, convert it to register value */
226
227static inline u16 temp2reg(struct adt7475_data *data, long val)
228{
229 u16 ret;
230
231 if (!(data->config5 & CONFIG5_TWOSCOMP)) {
232 val = clamp_val(val, -64000, 191000);
233 ret = (val + 64500) / 1000;
234 } else {
235 val = clamp_val(val, -128000, 127000);
236 if (val < -500)
237 ret = (256500 + val) / 1000;
238 else
239 ret = (val + 500) / 1000;
240 }
241
242 return ret << 2;
243}
244
245/* Given a register value, convert it to a real temp value */
246
247static inline int reg2temp(struct adt7475_data *data, u16 reg)
248{
249 if (data->config5 & CONFIG5_TWOSCOMP) {
250 if (reg >= 512)
251 return (reg - 1024) * 250;
252 else
253 return reg * 250;
254 } else
255 return (reg - 256) * 250;
256}
257
258static inline int tach2rpm(u16 tach)
259{
260 if (tach == 0 || tach == 0xFFFF)
261 return 0;
262
263 return (90000 * 60) / tach;
264}
265
266static inline u16 rpm2tach(unsigned long rpm)
267{
268 if (rpm == 0)
269 return 0;
270
271 return clamp_val((90000 * 60) / rpm, 1, 0xFFFF);
272}
273
274/* Scaling factors for voltage inputs, taken from the ADT7490 datasheet */
275static const int adt7473_in_scaling[ADT7475_VOLTAGE_COUNT + 1][2] = {
276 { 45, 94 }, /* +2.5V */
277 { 175, 525 }, /* Vccp */
278 { 68, 71 }, /* Vcc */
279 { 93, 47 }, /* +5V */
280 { 120, 20 }, /* +12V */
281 { 45, 45 }, /* Vtt */
282};
283
284static inline int reg2volt(int channel, u16 reg, u8 bypass_attn)
285{
286 const int *r = adt7473_in_scaling[channel];
287
288 if (bypass_attn & (1 << channel))
289 return DIV_ROUND_CLOSEST(reg * 2250, 1024);
290 return DIV_ROUND_CLOSEST(reg * (r[0] + r[1]) * 2250, r[1] * 1024);
291}
292
293static inline u16 volt2reg(int channel, long volt, u8 bypass_attn)
294{
295 const int *r = adt7473_in_scaling[channel];
296 long reg;
297
298 if (bypass_attn & (1 << channel))
299 reg = DIV_ROUND_CLOSEST(volt * 1024, 2250);
300 else
301 reg = DIV_ROUND_CLOSEST(volt * r[1] * 1024,
302 (r[0] + r[1]) * 2250);
303 return clamp_val(reg, 0, 1023) & (0xff << 2);
304}
305
306static int adt7475_read_word(struct i2c_client *client, int reg)
307{
308 int val1, val2;
309
310 val1 = i2c_smbus_read_byte_data(client, reg);
311 if (val1 < 0)
312 return val1;
313 val2 = i2c_smbus_read_byte_data(client, reg + 1);
314 if (val2 < 0)
315 return val2;
316
317 return val1 | (val2 << 8);
318}
319
320static void adt7475_write_word(struct i2c_client *client, int reg, u16 val)
321{
322 i2c_smbus_write_byte_data(client, reg + 1, val >> 8);
323 i2c_smbus_write_byte_data(client, reg, val & 0xFF);
324}
325
326static ssize_t voltage_show(struct device *dev, struct device_attribute *attr,
327 char *buf)
328{
329 struct adt7475_data *data = adt7475_update_device(dev);
330 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
331 unsigned short val;
332
333 if (IS_ERR(data))
334 return PTR_ERR(data);
335
336 switch (sattr->nr) {
337 case ALARM:
338 return sprintf(buf, "%d\n",
339 (data->alarms >> sattr->index) & 1);
340 default:
341 val = data->voltage[sattr->nr][sattr->index];
342 return sprintf(buf, "%d\n",
343 reg2volt(sattr->index, val, data->bypass_attn));
344 }
345}
346
347static ssize_t voltage_store(struct device *dev,
348 struct device_attribute *attr, const char *buf,
349 size_t count)
350{
351
352 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
353 struct adt7475_data *data = dev_get_drvdata(dev);
354 struct i2c_client *client = data->client;
355 unsigned char reg;
356 long val;
357
358 if (kstrtol(buf, 10, &val))
359 return -EINVAL;
360
361 mutex_lock(&data->lock);
362
363 data->voltage[sattr->nr][sattr->index] =
364 volt2reg(sattr->index, val, data->bypass_attn);
365
366 if (sattr->index < ADT7475_VOLTAGE_COUNT) {
367 if (sattr->nr == MIN)
368 reg = VOLTAGE_MIN_REG(sattr->index);
369 else
370 reg = VOLTAGE_MAX_REG(sattr->index);
371 } else {
372 if (sattr->nr == MIN)
373 reg = REG_VTT_MIN;
374 else
375 reg = REG_VTT_MAX;
376 }
377
378 i2c_smbus_write_byte_data(client, reg,
379 data->voltage[sattr->nr][sattr->index] >> 2);
380 mutex_unlock(&data->lock);
381
382 return count;
383}
384
385static ssize_t temp_show(struct device *dev, struct device_attribute *attr,
386 char *buf)
387{
388 struct adt7475_data *data = adt7475_update_device(dev);
389 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
390 int out;
391
392 if (IS_ERR(data))
393 return PTR_ERR(data);
394
395 switch (sattr->nr) {
396 case HYSTERSIS:
397 mutex_lock(&data->lock);
398 out = data->temp[sattr->nr][sattr->index];
399 if (sattr->index != 1)
400 out = (out >> 4) & 0xF;
401 else
402 out = (out & 0xF);
403 /*
404 * Show the value as an absolute number tied to
405 * THERM
406 */
407 out = reg2temp(data, data->temp[THERM][sattr->index]) -
408 out * 1000;
409 mutex_unlock(&data->lock);
410 break;
411
412 case OFFSET:
413 /*
414 * Offset is always 2's complement, regardless of the
415 * setting in CONFIG5
416 */
417 mutex_lock(&data->lock);
418 out = (s8)data->temp[sattr->nr][sattr->index];
419 if (data->config5 & CONFIG5_TEMPOFFSET)
420 out *= 1000;
421 else
422 out *= 500;
423 mutex_unlock(&data->lock);
424 break;
425
426 case ALARM:
427 out = (data->alarms >> (sattr->index + 4)) & 1;
428 break;
429
430 case FAULT:
431 /* Note - only for remote1 and remote2 */
432 out = !!(data->alarms & (sattr->index ? 0x8000 : 0x4000));
433 break;
434
435 default:
436 /* All other temp values are in the configured format */
437 out = reg2temp(data, data->temp[sattr->nr][sattr->index]);
438 }
439
440 return sprintf(buf, "%d\n", out);
441}
442
443static ssize_t temp_store(struct device *dev, struct device_attribute *attr,
444 const char *buf, size_t count)
445{
446 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
447 struct adt7475_data *data = dev_get_drvdata(dev);
448 struct i2c_client *client = data->client;
449 unsigned char reg = 0;
450 u8 out;
451 int temp;
452 long val;
453
454 if (kstrtol(buf, 10, &val))
455 return -EINVAL;
456
457 mutex_lock(&data->lock);
458
459 /* We need the config register in all cases for temp <-> reg conv. */
460 data->config5 = adt7475_read(REG_CONFIG5);
461
462 switch (sattr->nr) {
463 case OFFSET:
464 if (data->config5 & CONFIG5_TEMPOFFSET) {
465 val = clamp_val(val, -63000, 127000);
466 out = data->temp[OFFSET][sattr->index] = val / 1000;
467 } else {
468 val = clamp_val(val, -63000, 64000);
469 out = data->temp[OFFSET][sattr->index] = val / 500;
470 }
471 break;
472
473 case HYSTERSIS:
474 /*
475 * The value will be given as an absolute value, turn it
476 * into an offset based on THERM
477 */
478
479 /* Read fresh THERM and HYSTERSIS values from the chip */
480 data->temp[THERM][sattr->index] =
481 adt7475_read(TEMP_THERM_REG(sattr->index)) << 2;
482 adt7475_read_hystersis(client);
483
484 temp = reg2temp(data, data->temp[THERM][sattr->index]);
485 val = clamp_val(val, temp - 15000, temp);
486 val = (temp - val) / 1000;
487
488 if (sattr->index != 1) {
489 data->temp[HYSTERSIS][sattr->index] &= 0xF0;
490 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF) << 4;
491 } else {
492 data->temp[HYSTERSIS][sattr->index] &= 0x0F;
493 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF);
494 }
495
496 out = data->temp[HYSTERSIS][sattr->index];
497 break;
498
499 default:
500 data->temp[sattr->nr][sattr->index] = temp2reg(data, val);
501
502 /*
503 * We maintain an extra 2 digits of precision for simplicity
504 * - shift those back off before writing the value
505 */
506 out = (u8) (data->temp[sattr->nr][sattr->index] >> 2);
507 }
508
509 switch (sattr->nr) {
510 case MIN:
511 reg = TEMP_MIN_REG(sattr->index);
512 break;
513 case MAX:
514 reg = TEMP_MAX_REG(sattr->index);
515 break;
516 case OFFSET:
517 reg = TEMP_OFFSET_REG(sattr->index);
518 break;
519 case AUTOMIN:
520 reg = TEMP_TMIN_REG(sattr->index);
521 break;
522 case THERM:
523 reg = TEMP_THERM_REG(sattr->index);
524 break;
525 case HYSTERSIS:
526 if (sattr->index != 2)
527 reg = REG_REMOTE1_HYSTERSIS;
528 else
529 reg = REG_REMOTE2_HYSTERSIS;
530
531 break;
532 }
533
534 i2c_smbus_write_byte_data(client, reg, out);
535
536 mutex_unlock(&data->lock);
537 return count;
538}
539
540/* Assuming CONFIG6[SLOW] is 0 */
541static const int ad7475_st_map[] = {
542 37500, 18800, 12500, 7500, 4700, 3100, 1600, 800,
543};
544
545static ssize_t temp_st_show(struct device *dev, struct device_attribute *attr,
546 char *buf)
547{
548 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
549 struct adt7475_data *data = dev_get_drvdata(dev);
550 long val;
551
552 switch (sattr->index) {
553 case 0:
554 val = data->enh_acoustics[0] & 0xf;
555 break;
556 case 1:
557 val = (data->enh_acoustics[1] >> 4) & 0xf;
558 break;
559 case 2:
560 default:
561 val = data->enh_acoustics[1] & 0xf;
562 break;
563 }
564
565 if (val & 0x8)
566 return sprintf(buf, "%d\n", ad7475_st_map[val & 0x7]);
567 else
568 return sprintf(buf, "0\n");
569}
570
571static ssize_t temp_st_store(struct device *dev,
572 struct device_attribute *attr, const char *buf,
573 size_t count)
574{
575 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
576 struct adt7475_data *data = dev_get_drvdata(dev);
577 struct i2c_client *client = data->client;
578 unsigned char reg;
579 int shift, idx;
580 ulong val;
581
582 if (kstrtoul(buf, 10, &val))
583 return -EINVAL;
584
585 switch (sattr->index) {
586 case 0:
587 reg = REG_ENHANCE_ACOUSTICS1;
588 shift = 0;
589 idx = 0;
590 break;
591 case 1:
592 reg = REG_ENHANCE_ACOUSTICS2;
593 shift = 0;
594 idx = 1;
595 break;
596 case 2:
597 default:
598 reg = REG_ENHANCE_ACOUSTICS2;
599 shift = 4;
600 idx = 1;
601 break;
602 }
603
604 if (val > 0) {
605 val = find_closest_descending(val, ad7475_st_map,
606 ARRAY_SIZE(ad7475_st_map));
607 val |= 0x8;
608 }
609
610 mutex_lock(&data->lock);
611
612 data->enh_acoustics[idx] &= ~(0xf << shift);
613 data->enh_acoustics[idx] |= (val << shift);
614
615 i2c_smbus_write_byte_data(client, reg, data->enh_acoustics[idx]);
616
617 mutex_unlock(&data->lock);
618
619 return count;
620}
621
622/*
623 * Table of autorange values - the user will write the value in millidegrees,
624 * and we'll convert it
625 */
626static const int autorange_table[] = {
627 2000, 2500, 3330, 4000, 5000, 6670, 8000,
628 10000, 13330, 16000, 20000, 26670, 32000, 40000,
629 53330, 80000
630};
631
632static ssize_t point2_show(struct device *dev, struct device_attribute *attr,
633 char *buf)
634{
635 struct adt7475_data *data = adt7475_update_device(dev);
636 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
637 int out, val;
638
639 if (IS_ERR(data))
640 return PTR_ERR(data);
641
642 mutex_lock(&data->lock);
643 out = (data->range[sattr->index] >> 4) & 0x0F;
644 val = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
645 mutex_unlock(&data->lock);
646
647 return sprintf(buf, "%d\n", val + autorange_table[out]);
648}
649
650static ssize_t point2_store(struct device *dev, struct device_attribute *attr,
651 const char *buf, size_t count)
652{
653 struct adt7475_data *data = dev_get_drvdata(dev);
654 struct i2c_client *client = data->client;
655 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
656 int temp;
657 long val;
658
659 if (kstrtol(buf, 10, &val))
660 return -EINVAL;
661
662 mutex_lock(&data->lock);
663
664 /* Get a fresh copy of the needed registers */
665 data->config5 = adt7475_read(REG_CONFIG5);
666 data->temp[AUTOMIN][sattr->index] =
667 adt7475_read(TEMP_TMIN_REG(sattr->index)) << 2;
668 data->range[sattr->index] =
669 adt7475_read(TEMP_TRANGE_REG(sattr->index));
670
671 /*
672 * The user will write an absolute value, so subtract the start point
673 * to figure the range
674 */
675 temp = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
676 val = clamp_val(val, temp + autorange_table[0],
677 temp + autorange_table[ARRAY_SIZE(autorange_table) - 1]);
678 val -= temp;
679
680 /* Find the nearest table entry to what the user wrote */
681 val = find_closest(val, autorange_table, ARRAY_SIZE(autorange_table));
682
683 data->range[sattr->index] &= ~0xF0;
684 data->range[sattr->index] |= val << 4;
685
686 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
687 data->range[sattr->index]);
688
689 mutex_unlock(&data->lock);
690 return count;
691}
692
693static ssize_t tach_show(struct device *dev, struct device_attribute *attr,
694 char *buf)
695{
696 struct adt7475_data *data = adt7475_update_device(dev);
697 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
698 int out;
699
700 if (IS_ERR(data))
701 return PTR_ERR(data);
702
703 if (sattr->nr == ALARM)
704 out = (data->alarms >> (sattr->index + 10)) & 1;
705 else
706 out = tach2rpm(data->tach[sattr->nr][sattr->index]);
707
708 return sprintf(buf, "%d\n", out);
709}
710
711static ssize_t tach_store(struct device *dev, struct device_attribute *attr,
712 const char *buf, size_t count)
713{
714
715 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
716 struct adt7475_data *data = dev_get_drvdata(dev);
717 struct i2c_client *client = data->client;
718 unsigned long val;
719
720 if (kstrtoul(buf, 10, &val))
721 return -EINVAL;
722
723 mutex_lock(&data->lock);
724
725 data->tach[MIN][sattr->index] = rpm2tach(val);
726
727 adt7475_write_word(client, TACH_MIN_REG(sattr->index),
728 data->tach[MIN][sattr->index]);
729
730 mutex_unlock(&data->lock);
731 return count;
732}
733
734static ssize_t pwm_show(struct device *dev, struct device_attribute *attr,
735 char *buf)
736{
737 struct adt7475_data *data = adt7475_update_device(dev);
738 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
739
740 if (IS_ERR(data))
741 return PTR_ERR(data);
742
743 return sprintf(buf, "%d\n", data->pwm[sattr->nr][sattr->index]);
744}
745
746static ssize_t pwmchan_show(struct device *dev, struct device_attribute *attr,
747 char *buf)
748{
749 struct adt7475_data *data = adt7475_update_device(dev);
750 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
751
752 if (IS_ERR(data))
753 return PTR_ERR(data);
754
755 return sprintf(buf, "%d\n", data->pwmchan[sattr->index]);
756}
757
758static ssize_t pwmctrl_show(struct device *dev, struct device_attribute *attr,
759 char *buf)
760{
761 struct adt7475_data *data = adt7475_update_device(dev);
762 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
763
764 if (IS_ERR(data))
765 return PTR_ERR(data);
766
767 return sprintf(buf, "%d\n", data->pwmctl[sattr->index]);
768}
769
770static ssize_t pwm_store(struct device *dev, struct device_attribute *attr,
771 const char *buf, size_t count)
772{
773
774 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
775 struct adt7475_data *data = dev_get_drvdata(dev);
776 struct i2c_client *client = data->client;
777 unsigned char reg = 0;
778 long val;
779
780 if (kstrtol(buf, 10, &val))
781 return -EINVAL;
782
783 mutex_lock(&data->lock);
784
785 switch (sattr->nr) {
786 case INPUT:
787 /* Get a fresh value for CONTROL */
788 data->pwm[CONTROL][sattr->index] =
789 adt7475_read(PWM_CONFIG_REG(sattr->index));
790
791 /*
792 * If we are not in manual mode, then we shouldn't allow
793 * the user to set the pwm speed
794 */
795 if (((data->pwm[CONTROL][sattr->index] >> 5) & 7) != 7) {
796 mutex_unlock(&data->lock);
797 return count;
798 }
799
800 reg = PWM_REG(sattr->index);
801 break;
802
803 case MIN:
804 reg = PWM_MIN_REG(sattr->index);
805 break;
806
807 case MAX:
808 reg = PWM_MAX_REG(sattr->index);
809 break;
810 }
811
812 data->pwm[sattr->nr][sattr->index] = clamp_val(val, 0, 0xFF);
813 i2c_smbus_write_byte_data(client, reg,
814 data->pwm[sattr->nr][sattr->index]);
815 mutex_unlock(&data->lock);
816
817 return count;
818}
819
820static ssize_t stall_disable_show(struct device *dev,
821 struct device_attribute *attr, char *buf)
822{
823 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
824 struct adt7475_data *data = dev_get_drvdata(dev);
825
826 u8 mask = BIT(5 + sattr->index);
827
828 return sprintf(buf, "%d\n", !!(data->enh_acoustics[0] & mask));
829}
830
831static ssize_t stall_disable_store(struct device *dev,
832 struct device_attribute *attr,
833 const char *buf, size_t count)
834{
835 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
836 struct adt7475_data *data = dev_get_drvdata(dev);
837 struct i2c_client *client = data->client;
838 long val;
839 u8 mask = BIT(5 + sattr->index);
840
841 if (kstrtol(buf, 10, &val))
842 return -EINVAL;
843
844 mutex_lock(&data->lock);
845
846 data->enh_acoustics[0] &= ~mask;
847 if (val)
848 data->enh_acoustics[0] |= mask;
849
850 i2c_smbus_write_byte_data(client, REG_ENHANCE_ACOUSTICS1,
851 data->enh_acoustics[0]);
852
853 mutex_unlock(&data->lock);
854
855 return count;
856}
857
858/* Called by set_pwmctrl and set_pwmchan */
859
860static int hw_set_pwm(struct i2c_client *client, int index,
861 unsigned int pwmctl, unsigned int pwmchan)
862{
863 struct adt7475_data *data = i2c_get_clientdata(client);
864 long val = 0;
865
866 switch (pwmctl) {
867 case 0:
868 val = 0x03; /* Run at full speed */
869 break;
870 case 1:
871 val = 0x07; /* Manual mode */
872 break;
873 case 2:
874 switch (pwmchan) {
875 case 1:
876 /* Remote1 controls PWM */
877 val = 0x00;
878 break;
879 case 2:
880 /* local controls PWM */
881 val = 0x01;
882 break;
883 case 4:
884 /* remote2 controls PWM */
885 val = 0x02;
886 break;
887 case 6:
888 /* local/remote2 control PWM */
889 val = 0x05;
890 break;
891 case 7:
892 /* All three control PWM */
893 val = 0x06;
894 break;
895 default:
896 return -EINVAL;
897 }
898 break;
899 default:
900 return -EINVAL;
901 }
902
903 data->pwmctl[index] = pwmctl;
904 data->pwmchan[index] = pwmchan;
905
906 data->pwm[CONTROL][index] &= ~0xE0;
907 data->pwm[CONTROL][index] |= (val & 7) << 5;
908
909 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
910 data->pwm[CONTROL][index]);
911
912 return 0;
913}
914
915static ssize_t pwmchan_store(struct device *dev,
916 struct device_attribute *attr, const char *buf,
917 size_t count)
918{
919 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
920 struct adt7475_data *data = dev_get_drvdata(dev);
921 struct i2c_client *client = data->client;
922 int r;
923 long val;
924
925 if (kstrtol(buf, 10, &val))
926 return -EINVAL;
927
928 mutex_lock(&data->lock);
929 /* Read Modify Write PWM values */
930 adt7475_read_pwm(client, sattr->index);
931 r = hw_set_pwm(client, sattr->index, data->pwmctl[sattr->index], val);
932 if (r)
933 count = r;
934 mutex_unlock(&data->lock);
935
936 return count;
937}
938
939static ssize_t pwmctrl_store(struct device *dev,
940 struct device_attribute *attr, const char *buf,
941 size_t count)
942{
943 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
944 struct adt7475_data *data = dev_get_drvdata(dev);
945 struct i2c_client *client = data->client;
946 int r;
947 long val;
948
949 if (kstrtol(buf, 10, &val))
950 return -EINVAL;
951
952 mutex_lock(&data->lock);
953 /* Read Modify Write PWM values */
954 adt7475_read_pwm(client, sattr->index);
955 r = hw_set_pwm(client, sattr->index, val, data->pwmchan[sattr->index]);
956 if (r)
957 count = r;
958 mutex_unlock(&data->lock);
959
960 return count;
961}
962
963/* List of frequencies for the PWM */
964static const int pwmfreq_table[] = {
965 11, 14, 22, 29, 35, 44, 58, 88, 22500
966};
967
968static ssize_t pwmfreq_show(struct device *dev, struct device_attribute *attr,
969 char *buf)
970{
971 struct adt7475_data *data = adt7475_update_device(dev);
972 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
973 int idx;
974
975 if (IS_ERR(data))
976 return PTR_ERR(data);
977 idx = clamp_val(data->range[sattr->index] & 0xf, 0,
978 ARRAY_SIZE(pwmfreq_table) - 1);
979
980 return sprintf(buf, "%d\n", pwmfreq_table[idx]);
981}
982
983static ssize_t pwmfreq_store(struct device *dev,
984 struct device_attribute *attr, const char *buf,
985 size_t count)
986{
987 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
988 struct adt7475_data *data = dev_get_drvdata(dev);
989 struct i2c_client *client = data->client;
990 int out;
991 long val;
992
993 if (kstrtol(buf, 10, &val))
994 return -EINVAL;
995
996 out = find_closest(val, pwmfreq_table, ARRAY_SIZE(pwmfreq_table));
997
998 mutex_lock(&data->lock);
999
1000 data->range[sattr->index] =
1001 adt7475_read(TEMP_TRANGE_REG(sattr->index));
1002 data->range[sattr->index] &= ~0xf;
1003 data->range[sattr->index] |= out;
1004
1005 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
1006 data->range[sattr->index]);
1007
1008 mutex_unlock(&data->lock);
1009 return count;
1010}
1011
1012static ssize_t pwm_use_point2_pwm_at_crit_show(struct device *dev,
1013 struct device_attribute *devattr,
1014 char *buf)
1015{
1016 struct adt7475_data *data = adt7475_update_device(dev);
1017
1018 if (IS_ERR(data))
1019 return PTR_ERR(data);
1020
1021 return sprintf(buf, "%d\n", !!(data->config4 & CONFIG4_MAXDUTY));
1022}
1023
1024static ssize_t pwm_use_point2_pwm_at_crit_store(struct device *dev,
1025 struct device_attribute *devattr,
1026 const char *buf, size_t count)
1027{
1028 struct adt7475_data *data = dev_get_drvdata(dev);
1029 struct i2c_client *client = data->client;
1030 long val;
1031
1032 if (kstrtol(buf, 10, &val))
1033 return -EINVAL;
1034 if (val != 0 && val != 1)
1035 return -EINVAL;
1036
1037 mutex_lock(&data->lock);
1038 data->config4 = i2c_smbus_read_byte_data(client, REG_CONFIG4);
1039 if (val)
1040 data->config4 |= CONFIG4_MAXDUTY;
1041 else
1042 data->config4 &= ~CONFIG4_MAXDUTY;
1043 i2c_smbus_write_byte_data(client, REG_CONFIG4, data->config4);
1044 mutex_unlock(&data->lock);
1045
1046 return count;
1047}
1048
1049static ssize_t vrm_show(struct device *dev, struct device_attribute *devattr,
1050 char *buf)
1051{
1052 struct adt7475_data *data = dev_get_drvdata(dev);
1053 return sprintf(buf, "%d\n", (int)data->vrm);
1054}
1055
1056static ssize_t vrm_store(struct device *dev, struct device_attribute *devattr,
1057 const char *buf, size_t count)
1058{
1059 struct adt7475_data *data = dev_get_drvdata(dev);
1060 long val;
1061
1062 if (kstrtol(buf, 10, &val))
1063 return -EINVAL;
1064 if (val < 0 || val > 255)
1065 return -EINVAL;
1066 data->vrm = val;
1067
1068 return count;
1069}
1070
1071static ssize_t cpu0_vid_show(struct device *dev,
1072 struct device_attribute *devattr, char *buf)
1073{
1074 struct adt7475_data *data = adt7475_update_device(dev);
1075
1076 if (IS_ERR(data))
1077 return PTR_ERR(data);
1078
1079 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
1080}
1081
1082static SENSOR_DEVICE_ATTR_2_RO(in0_input, voltage, INPUT, 0);
1083static SENSOR_DEVICE_ATTR_2_RW(in0_max, voltage, MAX, 0);
1084static SENSOR_DEVICE_ATTR_2_RW(in0_min, voltage, MIN, 0);
1085static SENSOR_DEVICE_ATTR_2_RO(in0_alarm, voltage, ALARM, 0);
1086static SENSOR_DEVICE_ATTR_2_RO(in1_input, voltage, INPUT, 1);
1087static SENSOR_DEVICE_ATTR_2_RW(in1_max, voltage, MAX, 1);
1088static SENSOR_DEVICE_ATTR_2_RW(in1_min, voltage, MIN, 1);
1089static SENSOR_DEVICE_ATTR_2_RO(in1_alarm, voltage, ALARM, 1);
1090static SENSOR_DEVICE_ATTR_2_RO(in2_input, voltage, INPUT, 2);
1091static SENSOR_DEVICE_ATTR_2_RW(in2_max, voltage, MAX, 2);
1092static SENSOR_DEVICE_ATTR_2_RW(in2_min, voltage, MIN, 2);
1093static SENSOR_DEVICE_ATTR_2_RO(in2_alarm, voltage, ALARM, 2);
1094static SENSOR_DEVICE_ATTR_2_RO(in3_input, voltage, INPUT, 3);
1095static SENSOR_DEVICE_ATTR_2_RW(in3_max, voltage, MAX, 3);
1096static SENSOR_DEVICE_ATTR_2_RW(in3_min, voltage, MIN, 3);
1097static SENSOR_DEVICE_ATTR_2_RO(in3_alarm, voltage, ALARM, 3);
1098static SENSOR_DEVICE_ATTR_2_RO(in4_input, voltage, INPUT, 4);
1099static SENSOR_DEVICE_ATTR_2_RW(in4_max, voltage, MAX, 4);
1100static SENSOR_DEVICE_ATTR_2_RW(in4_min, voltage, MIN, 4);
1101static SENSOR_DEVICE_ATTR_2_RO(in4_alarm, voltage, ALARM, 8);
1102static SENSOR_DEVICE_ATTR_2_RO(in5_input, voltage, INPUT, 5);
1103static SENSOR_DEVICE_ATTR_2_RW(in5_max, voltage, MAX, 5);
1104static SENSOR_DEVICE_ATTR_2_RW(in5_min, voltage, MIN, 5);
1105static SENSOR_DEVICE_ATTR_2_RO(in5_alarm, voltage, ALARM, 31);
1106static SENSOR_DEVICE_ATTR_2_RO(temp1_input, temp, INPUT, 0);
1107static SENSOR_DEVICE_ATTR_2_RO(temp1_alarm, temp, ALARM, 0);
1108static SENSOR_DEVICE_ATTR_2_RO(temp1_fault, temp, FAULT, 0);
1109static SENSOR_DEVICE_ATTR_2_RW(temp1_max, temp, MAX, 0);
1110static SENSOR_DEVICE_ATTR_2_RW(temp1_min, temp, MIN, 0);
1111static SENSOR_DEVICE_ATTR_2_RW(temp1_offset, temp, OFFSET, 0);
1112static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_point1_temp, temp, AUTOMIN, 0);
1113static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_point2_temp, point2, 0, 0);
1114static SENSOR_DEVICE_ATTR_2_RW(temp1_crit, temp, THERM, 0);
1115static SENSOR_DEVICE_ATTR_2_RW(temp1_crit_hyst, temp, HYSTERSIS, 0);
1116static SENSOR_DEVICE_ATTR_2_RW(temp1_smoothing, temp_st, 0, 0);
1117static SENSOR_DEVICE_ATTR_2_RO(temp2_input, temp, INPUT, 1);
1118static SENSOR_DEVICE_ATTR_2_RO(temp2_alarm, temp, ALARM, 1);
1119static SENSOR_DEVICE_ATTR_2_RW(temp2_max, temp, MAX, 1);
1120static SENSOR_DEVICE_ATTR_2_RW(temp2_min, temp, MIN, 1);
1121static SENSOR_DEVICE_ATTR_2_RW(temp2_offset, temp, OFFSET, 1);
1122static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_point1_temp, temp, AUTOMIN, 1);
1123static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_point2_temp, point2, 0, 1);
1124static SENSOR_DEVICE_ATTR_2_RW(temp2_crit, temp, THERM, 1);
1125static SENSOR_DEVICE_ATTR_2_RW(temp2_crit_hyst, temp, HYSTERSIS, 1);
1126static SENSOR_DEVICE_ATTR_2_RW(temp2_smoothing, temp_st, 0, 1);
1127static SENSOR_DEVICE_ATTR_2_RO(temp3_input, temp, INPUT, 2);
1128static SENSOR_DEVICE_ATTR_2_RO(temp3_alarm, temp, ALARM, 2);
1129static SENSOR_DEVICE_ATTR_2_RO(temp3_fault, temp, FAULT, 2);
1130static SENSOR_DEVICE_ATTR_2_RW(temp3_max, temp, MAX, 2);
1131static SENSOR_DEVICE_ATTR_2_RW(temp3_min, temp, MIN, 2);
1132static SENSOR_DEVICE_ATTR_2_RW(temp3_offset, temp, OFFSET, 2);
1133static SENSOR_DEVICE_ATTR_2_RW(temp3_auto_point1_temp, temp, AUTOMIN, 2);
1134static SENSOR_DEVICE_ATTR_2_RW(temp3_auto_point2_temp, point2, 0, 2);
1135static SENSOR_DEVICE_ATTR_2_RW(temp3_crit, temp, THERM, 2);
1136static SENSOR_DEVICE_ATTR_2_RW(temp3_crit_hyst, temp, HYSTERSIS, 2);
1137static SENSOR_DEVICE_ATTR_2_RW(temp3_smoothing, temp_st, 0, 2);
1138static SENSOR_DEVICE_ATTR_2_RO(fan1_input, tach, INPUT, 0);
1139static SENSOR_DEVICE_ATTR_2_RW(fan1_min, tach, MIN, 0);
1140static SENSOR_DEVICE_ATTR_2_RO(fan1_alarm, tach, ALARM, 0);
1141static SENSOR_DEVICE_ATTR_2_RO(fan2_input, tach, INPUT, 1);
1142static SENSOR_DEVICE_ATTR_2_RW(fan2_min, tach, MIN, 1);
1143static SENSOR_DEVICE_ATTR_2_RO(fan2_alarm, tach, ALARM, 1);
1144static SENSOR_DEVICE_ATTR_2_RO(fan3_input, tach, INPUT, 2);
1145static SENSOR_DEVICE_ATTR_2_RW(fan3_min, tach, MIN, 2);
1146static SENSOR_DEVICE_ATTR_2_RO(fan3_alarm, tach, ALARM, 2);
1147static SENSOR_DEVICE_ATTR_2_RO(fan4_input, tach, INPUT, 3);
1148static SENSOR_DEVICE_ATTR_2_RW(fan4_min, tach, MIN, 3);
1149static SENSOR_DEVICE_ATTR_2_RO(fan4_alarm, tach, ALARM, 3);
1150static SENSOR_DEVICE_ATTR_2_RW(pwm1, pwm, INPUT, 0);
1151static SENSOR_DEVICE_ATTR_2_RW(pwm1_freq, pwmfreq, INPUT, 0);
1152static SENSOR_DEVICE_ATTR_2_RW(pwm1_enable, pwmctrl, INPUT, 0);
1153static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_channels_temp, pwmchan, INPUT, 0);
1154static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point1_pwm, pwm, MIN, 0);
1155static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point2_pwm, pwm, MAX, 0);
1156static SENSOR_DEVICE_ATTR_2_RW(pwm1_stall_disable, stall_disable, 0, 0);
1157static SENSOR_DEVICE_ATTR_2_RW(pwm2, pwm, INPUT, 1);
1158static SENSOR_DEVICE_ATTR_2_RW(pwm2_freq, pwmfreq, INPUT, 1);
1159static SENSOR_DEVICE_ATTR_2_RW(pwm2_enable, pwmctrl, INPUT, 1);
1160static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_channels_temp, pwmchan, INPUT, 1);
1161static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point1_pwm, pwm, MIN, 1);
1162static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point2_pwm, pwm, MAX, 1);
1163static SENSOR_DEVICE_ATTR_2_RW(pwm2_stall_disable, stall_disable, 0, 1);
1164static SENSOR_DEVICE_ATTR_2_RW(pwm3, pwm, INPUT, 2);
1165static SENSOR_DEVICE_ATTR_2_RW(pwm3_freq, pwmfreq, INPUT, 2);
1166static SENSOR_DEVICE_ATTR_2_RW(pwm3_enable, pwmctrl, INPUT, 2);
1167static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_channels_temp, pwmchan, INPUT, 2);
1168static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point1_pwm, pwm, MIN, 2);
1169static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point2_pwm, pwm, MAX, 2);
1170static SENSOR_DEVICE_ATTR_2_RW(pwm3_stall_disable, stall_disable, 0, 2);
1171
1172/* Non-standard name, might need revisiting */
1173static DEVICE_ATTR_RW(pwm_use_point2_pwm_at_crit);
1174
1175static DEVICE_ATTR_RW(vrm);
1176static DEVICE_ATTR_RO(cpu0_vid);
1177
1178static struct attribute *adt7475_attrs[] = {
1179 &sensor_dev_attr_in1_input.dev_attr.attr,
1180 &sensor_dev_attr_in1_max.dev_attr.attr,
1181 &sensor_dev_attr_in1_min.dev_attr.attr,
1182 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1183 &sensor_dev_attr_in2_input.dev_attr.attr,
1184 &sensor_dev_attr_in2_max.dev_attr.attr,
1185 &sensor_dev_attr_in2_min.dev_attr.attr,
1186 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1187 &sensor_dev_attr_temp1_input.dev_attr.attr,
1188 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1189 &sensor_dev_attr_temp1_fault.dev_attr.attr,
1190 &sensor_dev_attr_temp1_max.dev_attr.attr,
1191 &sensor_dev_attr_temp1_min.dev_attr.attr,
1192 &sensor_dev_attr_temp1_offset.dev_attr.attr,
1193 &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr,
1194 &sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr,
1195 &sensor_dev_attr_temp1_crit.dev_attr.attr,
1196 &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
1197 &sensor_dev_attr_temp1_smoothing.dev_attr.attr,
1198 &sensor_dev_attr_temp2_input.dev_attr.attr,
1199 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1200 &sensor_dev_attr_temp2_max.dev_attr.attr,
1201 &sensor_dev_attr_temp2_min.dev_attr.attr,
1202 &sensor_dev_attr_temp2_offset.dev_attr.attr,
1203 &sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr,
1204 &sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr,
1205 &sensor_dev_attr_temp2_crit.dev_attr.attr,
1206 &sensor_dev_attr_temp2_crit_hyst.dev_attr.attr,
1207 &sensor_dev_attr_temp2_smoothing.dev_attr.attr,
1208 &sensor_dev_attr_temp3_input.dev_attr.attr,
1209 &sensor_dev_attr_temp3_fault.dev_attr.attr,
1210 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1211 &sensor_dev_attr_temp3_max.dev_attr.attr,
1212 &sensor_dev_attr_temp3_min.dev_attr.attr,
1213 &sensor_dev_attr_temp3_offset.dev_attr.attr,
1214 &sensor_dev_attr_temp3_auto_point1_temp.dev_attr.attr,
1215 &sensor_dev_attr_temp3_auto_point2_temp.dev_attr.attr,
1216 &sensor_dev_attr_temp3_crit.dev_attr.attr,
1217 &sensor_dev_attr_temp3_crit_hyst.dev_attr.attr,
1218 &sensor_dev_attr_temp3_smoothing.dev_attr.attr,
1219 &sensor_dev_attr_fan1_input.dev_attr.attr,
1220 &sensor_dev_attr_fan1_min.dev_attr.attr,
1221 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1222 &sensor_dev_attr_fan2_input.dev_attr.attr,
1223 &sensor_dev_attr_fan2_min.dev_attr.attr,
1224 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1225 &sensor_dev_attr_fan3_input.dev_attr.attr,
1226 &sensor_dev_attr_fan3_min.dev_attr.attr,
1227 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1228 &sensor_dev_attr_pwm1.dev_attr.attr,
1229 &sensor_dev_attr_pwm1_freq.dev_attr.attr,
1230 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1231 &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
1232 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1233 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1234 &sensor_dev_attr_pwm1_stall_disable.dev_attr.attr,
1235 &sensor_dev_attr_pwm3.dev_attr.attr,
1236 &sensor_dev_attr_pwm3_freq.dev_attr.attr,
1237 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1238 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
1239 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1240 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1241 &sensor_dev_attr_pwm3_stall_disable.dev_attr.attr,
1242 &dev_attr_pwm_use_point2_pwm_at_crit.attr,
1243 NULL,
1244};
1245
1246static struct attribute *fan4_attrs[] = {
1247 &sensor_dev_attr_fan4_input.dev_attr.attr,
1248 &sensor_dev_attr_fan4_min.dev_attr.attr,
1249 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1250 NULL
1251};
1252
1253static struct attribute *pwm2_attrs[] = {
1254 &sensor_dev_attr_pwm2.dev_attr.attr,
1255 &sensor_dev_attr_pwm2_freq.dev_attr.attr,
1256 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1257 &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
1258 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1259 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1260 &sensor_dev_attr_pwm2_stall_disable.dev_attr.attr,
1261 NULL
1262};
1263
1264static struct attribute *in0_attrs[] = {
1265 &sensor_dev_attr_in0_input.dev_attr.attr,
1266 &sensor_dev_attr_in0_max.dev_attr.attr,
1267 &sensor_dev_attr_in0_min.dev_attr.attr,
1268 &sensor_dev_attr_in0_alarm.dev_attr.attr,
1269 NULL
1270};
1271
1272static struct attribute *in3_attrs[] = {
1273 &sensor_dev_attr_in3_input.dev_attr.attr,
1274 &sensor_dev_attr_in3_max.dev_attr.attr,
1275 &sensor_dev_attr_in3_min.dev_attr.attr,
1276 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1277 NULL
1278};
1279
1280static struct attribute *in4_attrs[] = {
1281 &sensor_dev_attr_in4_input.dev_attr.attr,
1282 &sensor_dev_attr_in4_max.dev_attr.attr,
1283 &sensor_dev_attr_in4_min.dev_attr.attr,
1284 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1285 NULL
1286};
1287
1288static struct attribute *in5_attrs[] = {
1289 &sensor_dev_attr_in5_input.dev_attr.attr,
1290 &sensor_dev_attr_in5_max.dev_attr.attr,
1291 &sensor_dev_attr_in5_min.dev_attr.attr,
1292 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1293 NULL
1294};
1295
1296static struct attribute *vid_attrs[] = {
1297 &dev_attr_cpu0_vid.attr,
1298 &dev_attr_vrm.attr,
1299 NULL
1300};
1301
1302static const struct attribute_group adt7475_attr_group = { .attrs = adt7475_attrs };
1303static const struct attribute_group fan4_attr_group = { .attrs = fan4_attrs };
1304static const struct attribute_group pwm2_attr_group = { .attrs = pwm2_attrs };
1305static const struct attribute_group in0_attr_group = { .attrs = in0_attrs };
1306static const struct attribute_group in3_attr_group = { .attrs = in3_attrs };
1307static const struct attribute_group in4_attr_group = { .attrs = in4_attrs };
1308static const struct attribute_group in5_attr_group = { .attrs = in5_attrs };
1309static const struct attribute_group vid_attr_group = { .attrs = vid_attrs };
1310
1311static int adt7475_detect(struct i2c_client *client,
1312 struct i2c_board_info *info)
1313{
1314 struct i2c_adapter *adapter = client->adapter;
1315 int vendid, devid, devid2;
1316 const char *name;
1317
1318 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1319 return -ENODEV;
1320
1321 vendid = adt7475_read(REG_VENDID);
1322 devid2 = adt7475_read(REG_DEVID2);
1323 if (vendid != 0x41 || /* Analog Devices */
1324 (devid2 & 0xf8) != 0x68)
1325 return -ENODEV;
1326
1327 devid = adt7475_read(REG_DEVID);
1328 if (devid == 0x73)
1329 name = "adt7473";
1330 else if (devid == 0x75 && client->addr == 0x2e)
1331 name = "adt7475";
1332 else if (devid == 0x76)
1333 name = "adt7476";
1334 else if ((devid2 & 0xfc) == 0x6c)
1335 name = "adt7490";
1336 else {
1337 dev_dbg(&adapter->dev,
1338 "Couldn't detect an ADT7473/75/76/90 part at "
1339 "0x%02x\n", (unsigned int)client->addr);
1340 return -ENODEV;
1341 }
1342
1343 strlcpy(info->type, name, I2C_NAME_SIZE);
1344
1345 return 0;
1346}
1347
1348static int adt7475_update_limits(struct i2c_client *client)
1349{
1350 struct adt7475_data *data = i2c_get_clientdata(client);
1351 int i;
1352 int ret;
1353
1354 ret = adt7475_read(REG_CONFIG4);
1355 if (ret < 0)
1356 return ret;
1357 data->config4 = ret;
1358
1359 ret = adt7475_read(REG_CONFIG5);
1360 if (ret < 0)
1361 return ret;
1362 data->config5 = ret;
1363
1364 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
1365 if (!(data->has_voltage & (1 << i)))
1366 continue;
1367 /* Adjust values so they match the input precision */
1368 ret = adt7475_read(VOLTAGE_MIN_REG(i));
1369 if (ret < 0)
1370 return ret;
1371 data->voltage[MIN][i] = ret << 2;
1372
1373 ret = adt7475_read(VOLTAGE_MAX_REG(i));
1374 if (ret < 0)
1375 return ret;
1376 data->voltage[MAX][i] = ret << 2;
1377 }
1378
1379 if (data->has_voltage & (1 << 5)) {
1380 ret = adt7475_read(REG_VTT_MIN);
1381 if (ret < 0)
1382 return ret;
1383 data->voltage[MIN][5] = ret << 2;
1384
1385 ret = adt7475_read(REG_VTT_MAX);
1386 if (ret < 0)
1387 return ret;
1388 data->voltage[MAX][5] = ret << 2;
1389 }
1390
1391 for (i = 0; i < ADT7475_TEMP_COUNT; i++) {
1392 /* Adjust values so they match the input precision */
1393 ret = adt7475_read(TEMP_MIN_REG(i));
1394 if (ret < 0)
1395 return ret;
1396 data->temp[MIN][i] = ret << 2;
1397
1398 ret = adt7475_read(TEMP_MAX_REG(i));
1399 if (ret < 0)
1400 return ret;
1401 data->temp[MAX][i] = ret << 2;
1402
1403 ret = adt7475_read(TEMP_TMIN_REG(i));
1404 if (ret < 0)
1405 return ret;
1406 data->temp[AUTOMIN][i] = ret << 2;
1407
1408 ret = adt7475_read(TEMP_THERM_REG(i));
1409 if (ret < 0)
1410 return ret;
1411 data->temp[THERM][i] = ret << 2;
1412
1413 ret = adt7475_read(TEMP_OFFSET_REG(i));
1414 if (ret < 0)
1415 return ret;
1416 data->temp[OFFSET][i] = ret;
1417 }
1418 adt7475_read_hystersis(client);
1419
1420 for (i = 0; i < ADT7475_TACH_COUNT; i++) {
1421 if (i == 3 && !data->has_fan4)
1422 continue;
1423 ret = adt7475_read_word(client, TACH_MIN_REG(i));
1424 if (ret < 0)
1425 return ret;
1426 data->tach[MIN][i] = ret;
1427 }
1428
1429 for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1430 if (i == 1 && !data->has_pwm2)
1431 continue;
1432 ret = adt7475_read(PWM_MAX_REG(i));
1433 if (ret < 0)
1434 return ret;
1435 data->pwm[MAX][i] = ret;
1436
1437 ret = adt7475_read(PWM_MIN_REG(i));
1438 if (ret < 0)
1439 return ret;
1440 data->pwm[MIN][i] = ret;
1441 /* Set the channel and control information */
1442 adt7475_read_pwm(client, i);
1443 }
1444
1445 ret = adt7475_read(TEMP_TRANGE_REG(0));
1446 if (ret < 0)
1447 return ret;
1448 data->range[0] = ret;
1449
1450 ret = adt7475_read(TEMP_TRANGE_REG(1));
1451 if (ret < 0)
1452 return ret;
1453 data->range[1] = ret;
1454
1455 ret = adt7475_read(TEMP_TRANGE_REG(2));
1456 if (ret < 0)
1457 return ret;
1458 data->range[2] = ret;
1459
1460 return 0;
1461}
1462
1463static int set_property_bit(const struct i2c_client *client, char *property,
1464 u8 *config, u8 bit_index)
1465{
1466 u32 prop_value = 0;
1467 int ret = of_property_read_u32(client->dev.of_node, property,
1468 &prop_value);
1469
1470 if (!ret) {
1471 if (prop_value)
1472 *config |= (1 << bit_index);
1473 else
1474 *config &= ~(1 << bit_index);
1475 }
1476
1477 return ret;
1478}
1479
1480static int load_attenuators(const struct i2c_client *client, int chip,
1481 struct adt7475_data *data)
1482{
1483 int ret;
1484
1485 if (chip == adt7476 || chip == adt7490) {
1486 set_property_bit(client, "adi,bypass-attenuator-in0",
1487 &data->config4, 4);
1488 set_property_bit(client, "adi,bypass-attenuator-in1",
1489 &data->config4, 5);
1490 set_property_bit(client, "adi,bypass-attenuator-in3",
1491 &data->config4, 6);
1492 set_property_bit(client, "adi,bypass-attenuator-in4",
1493 &data->config4, 7);
1494
1495 ret = i2c_smbus_write_byte_data(client, REG_CONFIG4,
1496 data->config4);
1497 if (ret < 0)
1498 return ret;
1499 } else if (chip == adt7473 || chip == adt7475) {
1500 set_property_bit(client, "adi,bypass-attenuator-in1",
1501 &data->config2, 5);
1502
1503 ret = i2c_smbus_write_byte_data(client, REG_CONFIG2,
1504 data->config2);
1505 if (ret < 0)
1506 return ret;
1507 }
1508
1509 return 0;
1510}
1511
1512static int adt7475_set_pwm_polarity(struct i2c_client *client)
1513{
1514 u32 states[ADT7475_PWM_COUNT];
1515 int ret, i;
1516 u8 val;
1517
1518 ret = of_property_read_u32_array(client->dev.of_node,
1519 "adi,pwm-active-state", states,
1520 ARRAY_SIZE(states));
1521 if (ret)
1522 return ret;
1523
1524 for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1525 ret = adt7475_read(PWM_CONFIG_REG(i));
1526 if (ret < 0)
1527 return ret;
1528 val = ret;
1529 if (states[i])
1530 val &= ~BIT(4);
1531 else
1532 val |= BIT(4);
1533
1534 ret = i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(i), val);
1535 if (ret)
1536 return ret;
1537 }
1538
1539 return 0;
1540}
1541
1542static int adt7475_probe(struct i2c_client *client,
1543 const struct i2c_device_id *id)
1544{
1545 enum chips chip;
1546 static const char * const names[] = {
1547 [adt7473] = "ADT7473",
1548 [adt7475] = "ADT7475",
1549 [adt7476] = "ADT7476",
1550 [adt7490] = "ADT7490",
1551 };
1552
1553 struct adt7475_data *data;
1554 struct device *hwmon_dev;
1555 int i, ret = 0, revision, group_num = 0;
1556 u8 config3;
1557
1558 data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
1559 if (data == NULL)
1560 return -ENOMEM;
1561
1562 mutex_init(&data->lock);
1563 data->client = client;
1564 i2c_set_clientdata(client, data);
1565
1566 if (client->dev.of_node)
1567 chip = (enum chips)of_device_get_match_data(&client->dev);
1568 else
1569 chip = id->driver_data;
1570
1571 /* Initialize device-specific values */
1572 switch (chip) {
1573 case adt7476:
1574 data->has_voltage = 0x0e; /* in1 to in3 */
1575 revision = adt7475_read(REG_DEVID2) & 0x07;
1576 break;
1577 case adt7490:
1578 data->has_voltage = 0x3e; /* in1 to in5 */
1579 revision = adt7475_read(REG_DEVID2) & 0x03;
1580 if (revision == 0x03)
1581 revision += adt7475_read(REG_DEVREV2);
1582 break;
1583 default:
1584 data->has_voltage = 0x06; /* in1, in2 */
1585 revision = adt7475_read(REG_DEVID2) & 0x07;
1586 }
1587
1588 config3 = adt7475_read(REG_CONFIG3);
1589 /* Pin PWM2 may alternatively be used for ALERT output */
1590 if (!(config3 & CONFIG3_SMBALERT))
1591 data->has_pwm2 = 1;
1592 /* Meaning of this bit is inverted for the ADT7473-1 */
1593 if (id->driver_data == adt7473 && revision >= 1)
1594 data->has_pwm2 = !data->has_pwm2;
1595
1596 data->config4 = adt7475_read(REG_CONFIG4);
1597 /* Pin TACH4 may alternatively be used for THERM */
1598 if ((data->config4 & CONFIG4_PINFUNC) == 0x0)
1599 data->has_fan4 = 1;
1600
1601 /*
1602 * THERM configuration is more complex on the ADT7476 and ADT7490,
1603 * because 2 different pins (TACH4 and +2.5 Vin) can be used for
1604 * this function
1605 */
1606 if (id->driver_data == adt7490) {
1607 if ((data->config4 & CONFIG4_PINFUNC) == 0x1 &&
1608 !(config3 & CONFIG3_THERM))
1609 data->has_fan4 = 1;
1610 }
1611 if (id->driver_data == adt7476 || id->driver_data == adt7490) {
1612 if (!(config3 & CONFIG3_THERM) ||
1613 (data->config4 & CONFIG4_PINFUNC) == 0x1)
1614 data->has_voltage |= (1 << 0); /* in0 */
1615 }
1616
1617 /*
1618 * On the ADT7476, the +12V input pin may instead be used as VID5,
1619 * and VID pins may alternatively be used as GPIO
1620 */
1621 if (id->driver_data == adt7476) {
1622 u8 vid = adt7475_read(REG_VID);
1623 if (!(vid & VID_VIDSEL))
1624 data->has_voltage |= (1 << 4); /* in4 */
1625
1626 data->has_vid = !(adt7475_read(REG_CONFIG5) & CONFIG5_VIDGPIO);
1627 }
1628
1629 /* Voltage attenuators can be bypassed, globally or individually */
1630 data->config2 = adt7475_read(REG_CONFIG2);
1631 ret = load_attenuators(client, chip, data);
1632 if (ret)
1633 dev_warn(&client->dev, "Error configuring attenuator bypass\n");
1634
1635 if (data->config2 & CONFIG2_ATTN) {
1636 data->bypass_attn = (0x3 << 3) | 0x3;
1637 } else {
1638 data->bypass_attn = ((data->config4 & CONFIG4_ATTN_IN10) >> 4) |
1639 ((data->config4 & CONFIG4_ATTN_IN43) >> 3);
1640 }
1641 data->bypass_attn &= data->has_voltage;
1642
1643 /*
1644 * Call adt7475_read_pwm for all pwm's as this will reprogram any
1645 * pwm's which are disabled to manual mode with 0% duty cycle
1646 */
1647 for (i = 0; i < ADT7475_PWM_COUNT; i++)
1648 adt7475_read_pwm(client, i);
1649
1650 ret = adt7475_set_pwm_polarity(client);
1651 if (ret && ret != -EINVAL)
1652 dev_warn(&client->dev, "Error configuring pwm polarity\n");
1653
1654 /* Start monitoring */
1655 switch (chip) {
1656 case adt7475:
1657 case adt7476:
1658 i2c_smbus_write_byte_data(client, REG_CONFIG1,
1659 adt7475_read(REG_CONFIG1) | 0x01);
1660 break;
1661 default:
1662 break;
1663 }
1664
1665 data->groups[group_num++] = &adt7475_attr_group;
1666
1667 /* Features that can be disabled individually */
1668 if (data->has_fan4) {
1669 data->groups[group_num++] = &fan4_attr_group;
1670 }
1671 if (data->has_pwm2) {
1672 data->groups[group_num++] = &pwm2_attr_group;
1673 }
1674 if (data->has_voltage & (1 << 0)) {
1675 data->groups[group_num++] = &in0_attr_group;
1676 }
1677 if (data->has_voltage & (1 << 3)) {
1678 data->groups[group_num++] = &in3_attr_group;
1679 }
1680 if (data->has_voltage & (1 << 4)) {
1681 data->groups[group_num++] = &in4_attr_group;
1682 }
1683 if (data->has_voltage & (1 << 5)) {
1684 data->groups[group_num++] = &in5_attr_group;
1685 }
1686 if (data->has_vid) {
1687 data->vrm = vid_which_vrm();
1688 data->groups[group_num] = &vid_attr_group;
1689 }
1690
1691 /* register device with all the acquired attributes */
1692 hwmon_dev = devm_hwmon_device_register_with_groups(&client->dev,
1693 client->name, data,
1694 data->groups);
1695
1696 if (IS_ERR(hwmon_dev)) {
1697 ret = PTR_ERR(hwmon_dev);
1698 return ret;
1699 }
1700
1701 dev_info(&client->dev, "%s device, revision %d\n",
1702 names[id->driver_data], revision);
1703 if ((data->has_voltage & 0x11) || data->has_fan4 || data->has_pwm2)
1704 dev_info(&client->dev, "Optional features:%s%s%s%s%s\n",
1705 (data->has_voltage & (1 << 0)) ? " in0" : "",
1706 (data->has_voltage & (1 << 4)) ? " in4" : "",
1707 data->has_fan4 ? " fan4" : "",
1708 data->has_pwm2 ? " pwm2" : "",
1709 data->has_vid ? " vid" : "");
1710 if (data->bypass_attn)
1711 dev_info(&client->dev, "Bypassing attenuators on:%s%s%s%s\n",
1712 (data->bypass_attn & (1 << 0)) ? " in0" : "",
1713 (data->bypass_attn & (1 << 1)) ? " in1" : "",
1714 (data->bypass_attn & (1 << 3)) ? " in3" : "",
1715 (data->bypass_attn & (1 << 4)) ? " in4" : "");
1716
1717 /* Limits and settings, should never change update more than once */
1718 ret = adt7475_update_limits(client);
1719 if (ret)
1720 return ret;
1721
1722 return 0;
1723}
1724
1725static struct i2c_driver adt7475_driver = {
1726 .class = I2C_CLASS_HWMON,
1727 .driver = {
1728 .name = "adt7475",
1729 .of_match_table = of_match_ptr(adt7475_of_match),
1730 },
1731 .probe = adt7475_probe,
1732 .id_table = adt7475_id,
1733 .detect = adt7475_detect,
1734 .address_list = normal_i2c,
1735};
1736
1737static void adt7475_read_hystersis(struct i2c_client *client)
1738{
1739 struct adt7475_data *data = i2c_get_clientdata(client);
1740
1741 data->temp[HYSTERSIS][0] = (u16) adt7475_read(REG_REMOTE1_HYSTERSIS);
1742 data->temp[HYSTERSIS][1] = data->temp[HYSTERSIS][0];
1743 data->temp[HYSTERSIS][2] = (u16) adt7475_read(REG_REMOTE2_HYSTERSIS);
1744}
1745
1746static void adt7475_read_pwm(struct i2c_client *client, int index)
1747{
1748 struct adt7475_data *data = i2c_get_clientdata(client);
1749 unsigned int v;
1750
1751 data->pwm[CONTROL][index] = adt7475_read(PWM_CONFIG_REG(index));
1752
1753 /*
1754 * Figure out the internal value for pwmctrl and pwmchan
1755 * based on the current settings
1756 */
1757 v = (data->pwm[CONTROL][index] >> 5) & 7;
1758
1759 if (v == 3)
1760 data->pwmctl[index] = 0;
1761 else if (v == 7)
1762 data->pwmctl[index] = 1;
1763 else if (v == 4) {
1764 /*
1765 * The fan is disabled - we don't want to
1766 * support that, so change to manual mode and
1767 * set the duty cycle to 0 instead
1768 */
1769 data->pwm[INPUT][index] = 0;
1770 data->pwm[CONTROL][index] &= ~0xE0;
1771 data->pwm[CONTROL][index] |= (7 << 5);
1772
1773 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
1774 data->pwm[INPUT][index]);
1775
1776 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
1777 data->pwm[CONTROL][index]);
1778
1779 data->pwmctl[index] = 1;
1780 } else {
1781 data->pwmctl[index] = 2;
1782
1783 switch (v) {
1784 case 0:
1785 data->pwmchan[index] = 1;
1786 break;
1787 case 1:
1788 data->pwmchan[index] = 2;
1789 break;
1790 case 2:
1791 data->pwmchan[index] = 4;
1792 break;
1793 case 5:
1794 data->pwmchan[index] = 6;
1795 break;
1796 case 6:
1797 data->pwmchan[index] = 7;
1798 break;
1799 }
1800 }
1801}
1802
1803static int adt7475_update_measure(struct device *dev)
1804{
1805 struct adt7475_data *data = dev_get_drvdata(dev);
1806 struct i2c_client *client = data->client;
1807 u16 ext;
1808 int i;
1809 int ret;
1810
1811 ret = adt7475_read(REG_STATUS2);
1812 if (ret < 0)
1813 return ret;
1814 data->alarms = ret << 8;
1815
1816 ret = adt7475_read(REG_STATUS1);
1817 if (ret < 0)
1818 return ret;
1819 data->alarms |= ret;
1820
1821 ret = adt7475_read(REG_EXTEND2);
1822 if (ret < 0)
1823 return ret;
1824
1825 ext = (ret << 8);
1826
1827 ret = adt7475_read(REG_EXTEND1);
1828 if (ret < 0)
1829 return ret;
1830
1831 ext |= ret;
1832
1833 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
1834 if (!(data->has_voltage & (1 << i)))
1835 continue;
1836 ret = adt7475_read(VOLTAGE_REG(i));
1837 if (ret < 0)
1838 return ret;
1839 data->voltage[INPUT][i] =
1840 (ret << 2) |
1841 ((ext >> (i * 2)) & 3);
1842 }
1843
1844 for (i = 0; i < ADT7475_TEMP_COUNT; i++) {
1845 ret = adt7475_read(TEMP_REG(i));
1846 if (ret < 0)
1847 return ret;
1848 data->temp[INPUT][i] =
1849 (ret << 2) |
1850 ((ext >> ((i + 5) * 2)) & 3);
1851 }
1852
1853 if (data->has_voltage & (1 << 5)) {
1854 ret = adt7475_read(REG_STATUS4);
1855 if (ret < 0)
1856 return ret;
1857 data->alarms |= ret << 24;
1858
1859 ret = adt7475_read(REG_EXTEND3);
1860 if (ret < 0)
1861 return ret;
1862 ext = ret;
1863
1864 ret = adt7475_read(REG_VTT);
1865 if (ret < 0)
1866 return ret;
1867 data->voltage[INPUT][5] = ret << 2 |
1868 ((ext >> 4) & 3);
1869 }
1870
1871 for (i = 0; i < ADT7475_TACH_COUNT; i++) {
1872 if (i == 3 && !data->has_fan4)
1873 continue;
1874 ret = adt7475_read_word(client, TACH_REG(i));
1875 if (ret < 0)
1876 return ret;
1877 data->tach[INPUT][i] = ret;
1878 }
1879
1880 /* Updated by hw when in auto mode */
1881 for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1882 if (i == 1 && !data->has_pwm2)
1883 continue;
1884 ret = adt7475_read(PWM_REG(i));
1885 if (ret < 0)
1886 return ret;
1887 data->pwm[INPUT][i] = ret;
1888 }
1889
1890 if (data->has_vid) {
1891 ret = adt7475_read(REG_VID);
1892 if (ret < 0)
1893 return ret;
1894 data->vid = ret & 0x3f;
1895 }
1896
1897 return 0;
1898}
1899
1900static struct adt7475_data *adt7475_update_device(struct device *dev)
1901{
1902 struct adt7475_data *data = dev_get_drvdata(dev);
1903 int ret;
1904
1905 mutex_lock(&data->lock);
1906
1907 /* Measurement values update every 2 seconds */
1908 if (time_after(jiffies, data->measure_updated + HZ * 2) ||
1909 !data->valid) {
1910 ret = adt7475_update_measure(dev);
1911 if (ret) {
1912 data->valid = false;
1913 mutex_unlock(&data->lock);
1914 return ERR_PTR(ret);
1915 }
1916 data->measure_updated = jiffies;
1917 data->valid = true;
1918 }
1919
1920 mutex_unlock(&data->lock);
1921
1922 return data;
1923}
1924
1925module_i2c_driver(adt7475_driver);
1926
1927MODULE_AUTHOR("Advanced Micro Devices, Inc");
1928MODULE_DESCRIPTION("adt7475 driver");
1929MODULE_LICENSE("GPL");
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * adt7475 - Thermal sensor driver for the ADT7475 chip and derivatives
4 * Copyright (C) 2007-2008, Advanced Micro Devices, Inc.
5 * Copyright (C) 2008 Jordan Crouse <jordan@cosmicpenguin.net>
6 * Copyright (C) 2008 Hans de Goede <hdegoede@redhat.com>
7 * Copyright (C) 2009 Jean Delvare <jdelvare@suse.de>
8 *
9 * Derived from the lm83 driver by Jean Delvare
10 */
11
12#include <linux/module.h>
13#include <linux/of_device.h>
14#include <linux/init.h>
15#include <linux/slab.h>
16#include <linux/i2c.h>
17#include <linux/hwmon.h>
18#include <linux/hwmon-sysfs.h>
19#include <linux/hwmon-vid.h>
20#include <linux/err.h>
21#include <linux/jiffies.h>
22#include <linux/of.h>
23#include <linux/util_macros.h>
24
25/* Indexes for the sysfs hooks */
26
27#define INPUT 0
28#define MIN 1
29#define MAX 2
30#define CONTROL 3
31#define OFFSET 3
32#define AUTOMIN 4
33#define THERM 5
34#define HYSTERSIS 6
35
36/*
37 * These are unique identifiers for the sysfs functions - unlike the
38 * numbers above, these are not also indexes into an array
39 */
40
41#define ALARM 9
42#define FAULT 10
43
44/* 7475 Common Registers */
45
46#define REG_DEVREV2 0x12 /* ADT7490 only */
47
48#define REG_VTT 0x1E /* ADT7490 only */
49#define REG_EXTEND3 0x1F /* ADT7490 only */
50
51#define REG_VOLTAGE_BASE 0x20
52#define REG_TEMP_BASE 0x25
53#define REG_TACH_BASE 0x28
54#define REG_PWM_BASE 0x30
55#define REG_PWM_MAX_BASE 0x38
56
57#define REG_DEVID 0x3D
58#define REG_VENDID 0x3E
59#define REG_DEVID2 0x3F
60
61#define REG_CONFIG1 0x40
62
63#define REG_STATUS1 0x41
64#define REG_STATUS2 0x42
65
66#define REG_VID 0x43 /* ADT7476 only */
67
68#define REG_VOLTAGE_MIN_BASE 0x44
69#define REG_VOLTAGE_MAX_BASE 0x45
70
71#define REG_TEMP_MIN_BASE 0x4E
72#define REG_TEMP_MAX_BASE 0x4F
73
74#define REG_TACH_MIN_BASE 0x54
75
76#define REG_PWM_CONFIG_BASE 0x5C
77
78#define REG_TEMP_TRANGE_BASE 0x5F
79
80#define REG_ENHANCE_ACOUSTICS1 0x62
81#define REG_ENHANCE_ACOUSTICS2 0x63
82
83#define REG_PWM_MIN_BASE 0x64
84
85#define REG_TEMP_TMIN_BASE 0x67
86#define REG_TEMP_THERM_BASE 0x6A
87
88#define REG_REMOTE1_HYSTERSIS 0x6D
89#define REG_REMOTE2_HYSTERSIS 0x6E
90
91#define REG_TEMP_OFFSET_BASE 0x70
92
93#define REG_CONFIG2 0x73
94
95#define REG_EXTEND1 0x76
96#define REG_EXTEND2 0x77
97
98#define REG_CONFIG3 0x78
99#define REG_CONFIG5 0x7C
100#define REG_CONFIG4 0x7D
101
102#define REG_STATUS4 0x81 /* ADT7490 only */
103
104#define REG_VTT_MIN 0x84 /* ADT7490 only */
105#define REG_VTT_MAX 0x86 /* ADT7490 only */
106
107#define VID_VIDSEL 0x80 /* ADT7476 only */
108
109#define CONFIG2_ATTN 0x20
110
111#define CONFIG3_SMBALERT 0x01
112#define CONFIG3_THERM 0x02
113
114#define CONFIG4_PINFUNC 0x03
115#define CONFIG4_THERM 0x01
116#define CONFIG4_SMBALERT 0x02
117#define CONFIG4_MAXDUTY 0x08
118#define CONFIG4_ATTN_IN10 0x30
119#define CONFIG4_ATTN_IN43 0xC0
120
121#define CONFIG5_TWOSCOMP 0x01
122#define CONFIG5_TEMPOFFSET 0x02
123#define CONFIG5_VIDGPIO 0x10 /* ADT7476 only */
124
125/* ADT7475 Settings */
126
127#define ADT7475_VOLTAGE_COUNT 5 /* Not counting Vtt */
128#define ADT7475_TEMP_COUNT 3
129#define ADT7475_TACH_COUNT 4
130#define ADT7475_PWM_COUNT 3
131
132/* Macro to read the registers */
133
134#define adt7475_read(reg) i2c_smbus_read_byte_data(client, (reg))
135
136/* Macros to easily index the registers */
137
138#define TACH_REG(idx) (REG_TACH_BASE + ((idx) * 2))
139#define TACH_MIN_REG(idx) (REG_TACH_MIN_BASE + ((idx) * 2))
140
141#define PWM_REG(idx) (REG_PWM_BASE + (idx))
142#define PWM_MAX_REG(idx) (REG_PWM_MAX_BASE + (idx))
143#define PWM_MIN_REG(idx) (REG_PWM_MIN_BASE + (idx))
144#define PWM_CONFIG_REG(idx) (REG_PWM_CONFIG_BASE + (idx))
145
146#define VOLTAGE_REG(idx) (REG_VOLTAGE_BASE + (idx))
147#define VOLTAGE_MIN_REG(idx) (REG_VOLTAGE_MIN_BASE + ((idx) * 2))
148#define VOLTAGE_MAX_REG(idx) (REG_VOLTAGE_MAX_BASE + ((idx) * 2))
149
150#define TEMP_REG(idx) (REG_TEMP_BASE + (idx))
151#define TEMP_MIN_REG(idx) (REG_TEMP_MIN_BASE + ((idx) * 2))
152#define TEMP_MAX_REG(idx) (REG_TEMP_MAX_BASE + ((idx) * 2))
153#define TEMP_TMIN_REG(idx) (REG_TEMP_TMIN_BASE + (idx))
154#define TEMP_THERM_REG(idx) (REG_TEMP_THERM_BASE + (idx))
155#define TEMP_OFFSET_REG(idx) (REG_TEMP_OFFSET_BASE + (idx))
156#define TEMP_TRANGE_REG(idx) (REG_TEMP_TRANGE_BASE + (idx))
157
158static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
159
160enum chips { adt7473, adt7475, adt7476, adt7490 };
161
162static const struct i2c_device_id adt7475_id[] = {
163 { "adt7473", adt7473 },
164 { "adt7475", adt7475 },
165 { "adt7476", adt7476 },
166 { "adt7490", adt7490 },
167 { }
168};
169MODULE_DEVICE_TABLE(i2c, adt7475_id);
170
171static const struct of_device_id __maybe_unused adt7475_of_match[] = {
172 {
173 .compatible = "adi,adt7473",
174 .data = (void *)adt7473
175 },
176 {
177 .compatible = "adi,adt7475",
178 .data = (void *)adt7475
179 },
180 {
181 .compatible = "adi,adt7476",
182 .data = (void *)adt7476
183 },
184 {
185 .compatible = "adi,adt7490",
186 .data = (void *)adt7490
187 },
188 { },
189};
190MODULE_DEVICE_TABLE(of, adt7475_of_match);
191
192struct adt7475_data {
193 struct i2c_client *client;
194 struct mutex lock;
195
196 unsigned long measure_updated;
197 bool valid;
198
199 u8 config2;
200 u8 config4;
201 u8 config5;
202 u8 has_voltage;
203 u8 bypass_attn; /* Bypass voltage attenuator */
204 u8 has_pwm2:1;
205 u8 has_fan4:1;
206 u8 has_vid:1;
207 u32 alarms;
208 u16 voltage[3][6];
209 u16 temp[7][3];
210 u16 tach[2][4];
211 u8 pwm[4][3];
212 u8 range[3];
213 u8 pwmctl[3];
214 u8 pwmchan[3];
215 u8 enh_acoustics[2];
216
217 u8 vid;
218 u8 vrm;
219 const struct attribute_group *groups[9];
220};
221
222static struct i2c_driver adt7475_driver;
223static struct adt7475_data *adt7475_update_device(struct device *dev);
224static void adt7475_read_hystersis(struct i2c_client *client);
225static void adt7475_read_pwm(struct i2c_client *client, int index);
226
227/* Given a temp value, convert it to register value */
228
229static inline u16 temp2reg(struct adt7475_data *data, long val)
230{
231 u16 ret;
232
233 if (!(data->config5 & CONFIG5_TWOSCOMP)) {
234 val = clamp_val(val, -64000, 191000);
235 ret = (val + 64500) / 1000;
236 } else {
237 val = clamp_val(val, -128000, 127000);
238 if (val < -500)
239 ret = (256500 + val) / 1000;
240 else
241 ret = (val + 500) / 1000;
242 }
243
244 return ret << 2;
245}
246
247/* Given a register value, convert it to a real temp value */
248
249static inline int reg2temp(struct adt7475_data *data, u16 reg)
250{
251 if (data->config5 & CONFIG5_TWOSCOMP) {
252 if (reg >= 512)
253 return (reg - 1024) * 250;
254 else
255 return reg * 250;
256 } else
257 return (reg - 256) * 250;
258}
259
260static inline int tach2rpm(u16 tach)
261{
262 if (tach == 0 || tach == 0xFFFF)
263 return 0;
264
265 return (90000 * 60) / tach;
266}
267
268static inline u16 rpm2tach(unsigned long rpm)
269{
270 if (rpm == 0)
271 return 0;
272
273 return clamp_val((90000 * 60) / rpm, 1, 0xFFFF);
274}
275
276/* Scaling factors for voltage inputs, taken from the ADT7490 datasheet */
277static const int adt7473_in_scaling[ADT7475_VOLTAGE_COUNT + 1][2] = {
278 { 45, 94 }, /* +2.5V */
279 { 175, 525 }, /* Vccp */
280 { 68, 71 }, /* Vcc */
281 { 93, 47 }, /* +5V */
282 { 120, 20 }, /* +12V */
283 { 45, 45 }, /* Vtt */
284};
285
286static inline int reg2volt(int channel, u16 reg, u8 bypass_attn)
287{
288 const int *r = adt7473_in_scaling[channel];
289
290 if (bypass_attn & (1 << channel))
291 return DIV_ROUND_CLOSEST(reg * 2250, 1024);
292 return DIV_ROUND_CLOSEST(reg * (r[0] + r[1]) * 2250, r[1] * 1024);
293}
294
295static inline u16 volt2reg(int channel, long volt, u8 bypass_attn)
296{
297 const int *r = adt7473_in_scaling[channel];
298 long reg;
299
300 if (bypass_attn & (1 << channel))
301 reg = DIV_ROUND_CLOSEST(volt * 1024, 2250);
302 else
303 reg = DIV_ROUND_CLOSEST(volt * r[1] * 1024,
304 (r[0] + r[1]) * 2250);
305 return clamp_val(reg, 0, 1023) & (0xff << 2);
306}
307
308static int adt7475_read_word(struct i2c_client *client, int reg)
309{
310 int val1, val2;
311
312 val1 = i2c_smbus_read_byte_data(client, reg);
313 if (val1 < 0)
314 return val1;
315 val2 = i2c_smbus_read_byte_data(client, reg + 1);
316 if (val2 < 0)
317 return val2;
318
319 return val1 | (val2 << 8);
320}
321
322static void adt7475_write_word(struct i2c_client *client, int reg, u16 val)
323{
324 i2c_smbus_write_byte_data(client, reg + 1, val >> 8);
325 i2c_smbus_write_byte_data(client, reg, val & 0xFF);
326}
327
328static ssize_t voltage_show(struct device *dev, struct device_attribute *attr,
329 char *buf)
330{
331 struct adt7475_data *data = adt7475_update_device(dev);
332 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
333 unsigned short val;
334
335 if (IS_ERR(data))
336 return PTR_ERR(data);
337
338 switch (sattr->nr) {
339 case ALARM:
340 return sprintf(buf, "%d\n",
341 (data->alarms >> sattr->index) & 1);
342 default:
343 val = data->voltage[sattr->nr][sattr->index];
344 return sprintf(buf, "%d\n",
345 reg2volt(sattr->index, val, data->bypass_attn));
346 }
347}
348
349static ssize_t voltage_store(struct device *dev,
350 struct device_attribute *attr, const char *buf,
351 size_t count)
352{
353
354 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
355 struct adt7475_data *data = dev_get_drvdata(dev);
356 struct i2c_client *client = data->client;
357 unsigned char reg;
358 long val;
359
360 if (kstrtol(buf, 10, &val))
361 return -EINVAL;
362
363 mutex_lock(&data->lock);
364
365 data->voltage[sattr->nr][sattr->index] =
366 volt2reg(sattr->index, val, data->bypass_attn);
367
368 if (sattr->index < ADT7475_VOLTAGE_COUNT) {
369 if (sattr->nr == MIN)
370 reg = VOLTAGE_MIN_REG(sattr->index);
371 else
372 reg = VOLTAGE_MAX_REG(sattr->index);
373 } else {
374 if (sattr->nr == MIN)
375 reg = REG_VTT_MIN;
376 else
377 reg = REG_VTT_MAX;
378 }
379
380 i2c_smbus_write_byte_data(client, reg,
381 data->voltage[sattr->nr][sattr->index] >> 2);
382 mutex_unlock(&data->lock);
383
384 return count;
385}
386
387static ssize_t temp_show(struct device *dev, struct device_attribute *attr,
388 char *buf)
389{
390 struct adt7475_data *data = adt7475_update_device(dev);
391 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
392 int out;
393
394 if (IS_ERR(data))
395 return PTR_ERR(data);
396
397 switch (sattr->nr) {
398 case HYSTERSIS:
399 mutex_lock(&data->lock);
400 out = data->temp[sattr->nr][sattr->index];
401 if (sattr->index != 1)
402 out = (out >> 4) & 0xF;
403 else
404 out = (out & 0xF);
405 /*
406 * Show the value as an absolute number tied to
407 * THERM
408 */
409 out = reg2temp(data, data->temp[THERM][sattr->index]) -
410 out * 1000;
411 mutex_unlock(&data->lock);
412 break;
413
414 case OFFSET:
415 /*
416 * Offset is always 2's complement, regardless of the
417 * setting in CONFIG5
418 */
419 mutex_lock(&data->lock);
420 out = (s8)data->temp[sattr->nr][sattr->index];
421 if (data->config5 & CONFIG5_TEMPOFFSET)
422 out *= 1000;
423 else
424 out *= 500;
425 mutex_unlock(&data->lock);
426 break;
427
428 case ALARM:
429 out = (data->alarms >> (sattr->index + 4)) & 1;
430 break;
431
432 case FAULT:
433 /* Note - only for remote1 and remote2 */
434 out = !!(data->alarms & (sattr->index ? 0x8000 : 0x4000));
435 break;
436
437 default:
438 /* All other temp values are in the configured format */
439 out = reg2temp(data, data->temp[sattr->nr][sattr->index]);
440 }
441
442 return sprintf(buf, "%d\n", out);
443}
444
445static ssize_t temp_store(struct device *dev, struct device_attribute *attr,
446 const char *buf, size_t count)
447{
448 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
449 struct adt7475_data *data = dev_get_drvdata(dev);
450 struct i2c_client *client = data->client;
451 unsigned char reg = 0;
452 u8 out;
453 int temp;
454 long val;
455
456 if (kstrtol(buf, 10, &val))
457 return -EINVAL;
458
459 mutex_lock(&data->lock);
460
461 /* We need the config register in all cases for temp <-> reg conv. */
462 data->config5 = adt7475_read(REG_CONFIG5);
463
464 switch (sattr->nr) {
465 case OFFSET:
466 if (data->config5 & CONFIG5_TEMPOFFSET) {
467 val = clamp_val(val, -63000, 127000);
468 out = data->temp[OFFSET][sattr->index] = val / 1000;
469 } else {
470 val = clamp_val(val, -63000, 64000);
471 out = data->temp[OFFSET][sattr->index] = val / 500;
472 }
473 break;
474
475 case HYSTERSIS:
476 /*
477 * The value will be given as an absolute value, turn it
478 * into an offset based on THERM
479 */
480
481 /* Read fresh THERM and HYSTERSIS values from the chip */
482 data->temp[THERM][sattr->index] =
483 adt7475_read(TEMP_THERM_REG(sattr->index)) << 2;
484 adt7475_read_hystersis(client);
485
486 temp = reg2temp(data, data->temp[THERM][sattr->index]);
487 val = clamp_val(val, temp - 15000, temp);
488 val = (temp - val) / 1000;
489
490 if (sattr->index != 1) {
491 data->temp[HYSTERSIS][sattr->index] &= 0xF0;
492 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF) << 4;
493 } else {
494 data->temp[HYSTERSIS][sattr->index] &= 0x0F;
495 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF);
496 }
497
498 out = data->temp[HYSTERSIS][sattr->index];
499 break;
500
501 default:
502 data->temp[sattr->nr][sattr->index] = temp2reg(data, val);
503
504 /*
505 * We maintain an extra 2 digits of precision for simplicity
506 * - shift those back off before writing the value
507 */
508 out = (u8) (data->temp[sattr->nr][sattr->index] >> 2);
509 }
510
511 switch (sattr->nr) {
512 case MIN:
513 reg = TEMP_MIN_REG(sattr->index);
514 break;
515 case MAX:
516 reg = TEMP_MAX_REG(sattr->index);
517 break;
518 case OFFSET:
519 reg = TEMP_OFFSET_REG(sattr->index);
520 break;
521 case AUTOMIN:
522 reg = TEMP_TMIN_REG(sattr->index);
523 break;
524 case THERM:
525 reg = TEMP_THERM_REG(sattr->index);
526 break;
527 case HYSTERSIS:
528 if (sattr->index != 2)
529 reg = REG_REMOTE1_HYSTERSIS;
530 else
531 reg = REG_REMOTE2_HYSTERSIS;
532
533 break;
534 }
535
536 i2c_smbus_write_byte_data(client, reg, out);
537
538 mutex_unlock(&data->lock);
539 return count;
540}
541
542/* Assuming CONFIG6[SLOW] is 0 */
543static const int ad7475_st_map[] = {
544 37500, 18800, 12500, 7500, 4700, 3100, 1600, 800,
545};
546
547static ssize_t temp_st_show(struct device *dev, struct device_attribute *attr,
548 char *buf)
549{
550 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
551 struct adt7475_data *data = dev_get_drvdata(dev);
552 long val;
553
554 switch (sattr->index) {
555 case 0:
556 val = data->enh_acoustics[0] & 0xf;
557 break;
558 case 1:
559 val = (data->enh_acoustics[1] >> 4) & 0xf;
560 break;
561 case 2:
562 default:
563 val = data->enh_acoustics[1] & 0xf;
564 break;
565 }
566
567 if (val & 0x8)
568 return sprintf(buf, "%d\n", ad7475_st_map[val & 0x7]);
569 else
570 return sprintf(buf, "0\n");
571}
572
573static ssize_t temp_st_store(struct device *dev,
574 struct device_attribute *attr, const char *buf,
575 size_t count)
576{
577 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
578 struct adt7475_data *data = dev_get_drvdata(dev);
579 struct i2c_client *client = data->client;
580 unsigned char reg;
581 int shift, idx;
582 ulong val;
583
584 if (kstrtoul(buf, 10, &val))
585 return -EINVAL;
586
587 switch (sattr->index) {
588 case 0:
589 reg = REG_ENHANCE_ACOUSTICS1;
590 shift = 0;
591 idx = 0;
592 break;
593 case 1:
594 reg = REG_ENHANCE_ACOUSTICS2;
595 shift = 0;
596 idx = 1;
597 break;
598 case 2:
599 default:
600 reg = REG_ENHANCE_ACOUSTICS2;
601 shift = 4;
602 idx = 1;
603 break;
604 }
605
606 if (val > 0) {
607 val = find_closest_descending(val, ad7475_st_map,
608 ARRAY_SIZE(ad7475_st_map));
609 val |= 0x8;
610 }
611
612 mutex_lock(&data->lock);
613
614 data->enh_acoustics[idx] &= ~(0xf << shift);
615 data->enh_acoustics[idx] |= (val << shift);
616
617 i2c_smbus_write_byte_data(client, reg, data->enh_acoustics[idx]);
618
619 mutex_unlock(&data->lock);
620
621 return count;
622}
623
624/*
625 * Table of autorange values - the user will write the value in millidegrees,
626 * and we'll convert it
627 */
628static const int autorange_table[] = {
629 2000, 2500, 3330, 4000, 5000, 6670, 8000,
630 10000, 13330, 16000, 20000, 26670, 32000, 40000,
631 53330, 80000
632};
633
634static ssize_t point2_show(struct device *dev, struct device_attribute *attr,
635 char *buf)
636{
637 struct adt7475_data *data = adt7475_update_device(dev);
638 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
639 int out, val;
640
641 if (IS_ERR(data))
642 return PTR_ERR(data);
643
644 mutex_lock(&data->lock);
645 out = (data->range[sattr->index] >> 4) & 0x0F;
646 val = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
647 mutex_unlock(&data->lock);
648
649 return sprintf(buf, "%d\n", val + autorange_table[out]);
650}
651
652static ssize_t point2_store(struct device *dev, struct device_attribute *attr,
653 const char *buf, size_t count)
654{
655 struct adt7475_data *data = dev_get_drvdata(dev);
656 struct i2c_client *client = data->client;
657 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
658 int temp;
659 long val;
660
661 if (kstrtol(buf, 10, &val))
662 return -EINVAL;
663
664 mutex_lock(&data->lock);
665
666 /* Get a fresh copy of the needed registers */
667 data->config5 = adt7475_read(REG_CONFIG5);
668 data->temp[AUTOMIN][sattr->index] =
669 adt7475_read(TEMP_TMIN_REG(sattr->index)) << 2;
670 data->range[sattr->index] =
671 adt7475_read(TEMP_TRANGE_REG(sattr->index));
672
673 /*
674 * The user will write an absolute value, so subtract the start point
675 * to figure the range
676 */
677 temp = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
678 val = clamp_val(val, temp + autorange_table[0],
679 temp + autorange_table[ARRAY_SIZE(autorange_table) - 1]);
680 val -= temp;
681
682 /* Find the nearest table entry to what the user wrote */
683 val = find_closest(val, autorange_table, ARRAY_SIZE(autorange_table));
684
685 data->range[sattr->index] &= ~0xF0;
686 data->range[sattr->index] |= val << 4;
687
688 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
689 data->range[sattr->index]);
690
691 mutex_unlock(&data->lock);
692 return count;
693}
694
695static ssize_t tach_show(struct device *dev, struct device_attribute *attr,
696 char *buf)
697{
698 struct adt7475_data *data = adt7475_update_device(dev);
699 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
700 int out;
701
702 if (IS_ERR(data))
703 return PTR_ERR(data);
704
705 if (sattr->nr == ALARM)
706 out = (data->alarms >> (sattr->index + 10)) & 1;
707 else
708 out = tach2rpm(data->tach[sattr->nr][sattr->index]);
709
710 return sprintf(buf, "%d\n", out);
711}
712
713static ssize_t tach_store(struct device *dev, struct device_attribute *attr,
714 const char *buf, size_t count)
715{
716
717 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
718 struct adt7475_data *data = dev_get_drvdata(dev);
719 struct i2c_client *client = data->client;
720 unsigned long val;
721
722 if (kstrtoul(buf, 10, &val))
723 return -EINVAL;
724
725 mutex_lock(&data->lock);
726
727 data->tach[MIN][sattr->index] = rpm2tach(val);
728
729 adt7475_write_word(client, TACH_MIN_REG(sattr->index),
730 data->tach[MIN][sattr->index]);
731
732 mutex_unlock(&data->lock);
733 return count;
734}
735
736static ssize_t pwm_show(struct device *dev, struct device_attribute *attr,
737 char *buf)
738{
739 struct adt7475_data *data = adt7475_update_device(dev);
740 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
741
742 if (IS_ERR(data))
743 return PTR_ERR(data);
744
745 return sprintf(buf, "%d\n", data->pwm[sattr->nr][sattr->index]);
746}
747
748static ssize_t pwmchan_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->pwmchan[sattr->index]);
758}
759
760static ssize_t pwmctrl_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->pwmctl[sattr->index]);
770}
771
772static ssize_t pwm_store(struct device *dev, struct device_attribute *attr,
773 const char *buf, size_t count)
774{
775
776 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
777 struct adt7475_data *data = dev_get_drvdata(dev);
778 struct i2c_client *client = data->client;
779 unsigned char reg = 0;
780 long val;
781
782 if (kstrtol(buf, 10, &val))
783 return -EINVAL;
784
785 mutex_lock(&data->lock);
786
787 switch (sattr->nr) {
788 case INPUT:
789 /* Get a fresh value for CONTROL */
790 data->pwm[CONTROL][sattr->index] =
791 adt7475_read(PWM_CONFIG_REG(sattr->index));
792
793 /*
794 * If we are not in manual mode, then we shouldn't allow
795 * the user to set the pwm speed
796 */
797 if (((data->pwm[CONTROL][sattr->index] >> 5) & 7) != 7) {
798 mutex_unlock(&data->lock);
799 return count;
800 }
801
802 reg = PWM_REG(sattr->index);
803 break;
804
805 case MIN:
806 reg = PWM_MIN_REG(sattr->index);
807 break;
808
809 case MAX:
810 reg = PWM_MAX_REG(sattr->index);
811 break;
812 }
813
814 data->pwm[sattr->nr][sattr->index] = clamp_val(val, 0, 0xFF);
815 i2c_smbus_write_byte_data(client, reg,
816 data->pwm[sattr->nr][sattr->index]);
817 mutex_unlock(&data->lock);
818
819 return count;
820}
821
822static ssize_t stall_disable_show(struct device *dev,
823 struct device_attribute *attr, char *buf)
824{
825 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
826 struct adt7475_data *data = dev_get_drvdata(dev);
827
828 u8 mask = BIT(5 + sattr->index);
829
830 return sprintf(buf, "%d\n", !!(data->enh_acoustics[0] & mask));
831}
832
833static ssize_t stall_disable_store(struct device *dev,
834 struct device_attribute *attr,
835 const char *buf, size_t count)
836{
837 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
838 struct adt7475_data *data = dev_get_drvdata(dev);
839 struct i2c_client *client = data->client;
840 long val;
841 u8 mask = BIT(5 + sattr->index);
842
843 if (kstrtol(buf, 10, &val))
844 return -EINVAL;
845
846 mutex_lock(&data->lock);
847
848 data->enh_acoustics[0] &= ~mask;
849 if (val)
850 data->enh_acoustics[0] |= mask;
851
852 i2c_smbus_write_byte_data(client, REG_ENHANCE_ACOUSTICS1,
853 data->enh_acoustics[0]);
854
855 mutex_unlock(&data->lock);
856
857 return count;
858}
859
860/* Called by set_pwmctrl and set_pwmchan */
861
862static int hw_set_pwm(struct i2c_client *client, int index,
863 unsigned int pwmctl, unsigned int pwmchan)
864{
865 struct adt7475_data *data = i2c_get_clientdata(client);
866 long val = 0;
867
868 switch (pwmctl) {
869 case 0:
870 val = 0x03; /* Run at full speed */
871 break;
872 case 1:
873 val = 0x07; /* Manual mode */
874 break;
875 case 2:
876 switch (pwmchan) {
877 case 1:
878 /* Remote1 controls PWM */
879 val = 0x00;
880 break;
881 case 2:
882 /* local controls PWM */
883 val = 0x01;
884 break;
885 case 4:
886 /* remote2 controls PWM */
887 val = 0x02;
888 break;
889 case 6:
890 /* local/remote2 control PWM */
891 val = 0x05;
892 break;
893 case 7:
894 /* All three control PWM */
895 val = 0x06;
896 break;
897 default:
898 return -EINVAL;
899 }
900 break;
901 default:
902 return -EINVAL;
903 }
904
905 data->pwmctl[index] = pwmctl;
906 data->pwmchan[index] = pwmchan;
907
908 data->pwm[CONTROL][index] &= ~0xE0;
909 data->pwm[CONTROL][index] |= (val & 7) << 5;
910
911 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
912 data->pwm[CONTROL][index]);
913
914 return 0;
915}
916
917static ssize_t pwmchan_store(struct device *dev,
918 struct device_attribute *attr, const char *buf,
919 size_t count)
920{
921 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
922 struct adt7475_data *data = dev_get_drvdata(dev);
923 struct i2c_client *client = data->client;
924 int r;
925 long val;
926
927 if (kstrtol(buf, 10, &val))
928 return -EINVAL;
929
930 mutex_lock(&data->lock);
931 /* Read Modify Write PWM values */
932 adt7475_read_pwm(client, sattr->index);
933 r = hw_set_pwm(client, sattr->index, data->pwmctl[sattr->index], val);
934 if (r)
935 count = r;
936 mutex_unlock(&data->lock);
937
938 return count;
939}
940
941static ssize_t pwmctrl_store(struct device *dev,
942 struct device_attribute *attr, const char *buf,
943 size_t count)
944{
945 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
946 struct adt7475_data *data = dev_get_drvdata(dev);
947 struct i2c_client *client = data->client;
948 int r;
949 long val;
950
951 if (kstrtol(buf, 10, &val))
952 return -EINVAL;
953
954 mutex_lock(&data->lock);
955 /* Read Modify Write PWM values */
956 adt7475_read_pwm(client, sattr->index);
957 r = hw_set_pwm(client, sattr->index, val, data->pwmchan[sattr->index]);
958 if (r)
959 count = r;
960 mutex_unlock(&data->lock);
961
962 return count;
963}
964
965/* List of frequencies for the PWM */
966static const int pwmfreq_table[] = {
967 11, 14, 22, 29, 35, 44, 58, 88, 22500
968};
969
970static ssize_t pwmfreq_show(struct device *dev, struct device_attribute *attr,
971 char *buf)
972{
973 struct adt7475_data *data = adt7475_update_device(dev);
974 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
975 int idx;
976
977 if (IS_ERR(data))
978 return PTR_ERR(data);
979 idx = clamp_val(data->range[sattr->index] & 0xf, 0,
980 ARRAY_SIZE(pwmfreq_table) - 1);
981
982 return sprintf(buf, "%d\n", pwmfreq_table[idx]);
983}
984
985static ssize_t pwmfreq_store(struct device *dev,
986 struct device_attribute *attr, const char *buf,
987 size_t count)
988{
989 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
990 struct adt7475_data *data = dev_get_drvdata(dev);
991 struct i2c_client *client = data->client;
992 int out;
993 long val;
994
995 if (kstrtol(buf, 10, &val))
996 return -EINVAL;
997
998 out = find_closest(val, pwmfreq_table, ARRAY_SIZE(pwmfreq_table));
999
1000 mutex_lock(&data->lock);
1001
1002 data->range[sattr->index] =
1003 adt7475_read(TEMP_TRANGE_REG(sattr->index));
1004 data->range[sattr->index] &= ~0xf;
1005 data->range[sattr->index] |= out;
1006
1007 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
1008 data->range[sattr->index]);
1009
1010 mutex_unlock(&data->lock);
1011 return count;
1012}
1013
1014static ssize_t pwm_use_point2_pwm_at_crit_show(struct device *dev,
1015 struct device_attribute *devattr,
1016 char *buf)
1017{
1018 struct adt7475_data *data = adt7475_update_device(dev);
1019
1020 if (IS_ERR(data))
1021 return PTR_ERR(data);
1022
1023 return sprintf(buf, "%d\n", !!(data->config4 & CONFIG4_MAXDUTY));
1024}
1025
1026static ssize_t pwm_use_point2_pwm_at_crit_store(struct device *dev,
1027 struct device_attribute *devattr,
1028 const char *buf, size_t count)
1029{
1030 struct adt7475_data *data = dev_get_drvdata(dev);
1031 struct i2c_client *client = data->client;
1032 long val;
1033
1034 if (kstrtol(buf, 10, &val))
1035 return -EINVAL;
1036 if (val != 0 && val != 1)
1037 return -EINVAL;
1038
1039 mutex_lock(&data->lock);
1040 data->config4 = i2c_smbus_read_byte_data(client, REG_CONFIG4);
1041 if (val)
1042 data->config4 |= CONFIG4_MAXDUTY;
1043 else
1044 data->config4 &= ~CONFIG4_MAXDUTY;
1045 i2c_smbus_write_byte_data(client, REG_CONFIG4, data->config4);
1046 mutex_unlock(&data->lock);
1047
1048 return count;
1049}
1050
1051static ssize_t vrm_show(struct device *dev, struct device_attribute *devattr,
1052 char *buf)
1053{
1054 struct adt7475_data *data = dev_get_drvdata(dev);
1055 return sprintf(buf, "%d\n", (int)data->vrm);
1056}
1057
1058static ssize_t vrm_store(struct device *dev, struct device_attribute *devattr,
1059 const char *buf, size_t count)
1060{
1061 struct adt7475_data *data = dev_get_drvdata(dev);
1062 long val;
1063
1064 if (kstrtol(buf, 10, &val))
1065 return -EINVAL;
1066 if (val < 0 || val > 255)
1067 return -EINVAL;
1068 data->vrm = val;
1069
1070 return count;
1071}
1072
1073static ssize_t cpu0_vid_show(struct device *dev,
1074 struct device_attribute *devattr, char *buf)
1075{
1076 struct adt7475_data *data = adt7475_update_device(dev);
1077
1078 if (IS_ERR(data))
1079 return PTR_ERR(data);
1080
1081 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
1082}
1083
1084static SENSOR_DEVICE_ATTR_2_RO(in0_input, voltage, INPUT, 0);
1085static SENSOR_DEVICE_ATTR_2_RW(in0_max, voltage, MAX, 0);
1086static SENSOR_DEVICE_ATTR_2_RW(in0_min, voltage, MIN, 0);
1087static SENSOR_DEVICE_ATTR_2_RO(in0_alarm, voltage, ALARM, 0);
1088static SENSOR_DEVICE_ATTR_2_RO(in1_input, voltage, INPUT, 1);
1089static SENSOR_DEVICE_ATTR_2_RW(in1_max, voltage, MAX, 1);
1090static SENSOR_DEVICE_ATTR_2_RW(in1_min, voltage, MIN, 1);
1091static SENSOR_DEVICE_ATTR_2_RO(in1_alarm, voltage, ALARM, 1);
1092static SENSOR_DEVICE_ATTR_2_RO(in2_input, voltage, INPUT, 2);
1093static SENSOR_DEVICE_ATTR_2_RW(in2_max, voltage, MAX, 2);
1094static SENSOR_DEVICE_ATTR_2_RW(in2_min, voltage, MIN, 2);
1095static SENSOR_DEVICE_ATTR_2_RO(in2_alarm, voltage, ALARM, 2);
1096static SENSOR_DEVICE_ATTR_2_RO(in3_input, voltage, INPUT, 3);
1097static SENSOR_DEVICE_ATTR_2_RW(in3_max, voltage, MAX, 3);
1098static SENSOR_DEVICE_ATTR_2_RW(in3_min, voltage, MIN, 3);
1099static SENSOR_DEVICE_ATTR_2_RO(in3_alarm, voltage, ALARM, 3);
1100static SENSOR_DEVICE_ATTR_2_RO(in4_input, voltage, INPUT, 4);
1101static SENSOR_DEVICE_ATTR_2_RW(in4_max, voltage, MAX, 4);
1102static SENSOR_DEVICE_ATTR_2_RW(in4_min, voltage, MIN, 4);
1103static SENSOR_DEVICE_ATTR_2_RO(in4_alarm, voltage, ALARM, 8);
1104static SENSOR_DEVICE_ATTR_2_RO(in5_input, voltage, INPUT, 5);
1105static SENSOR_DEVICE_ATTR_2_RW(in5_max, voltage, MAX, 5);
1106static SENSOR_DEVICE_ATTR_2_RW(in5_min, voltage, MIN, 5);
1107static SENSOR_DEVICE_ATTR_2_RO(in5_alarm, voltage, ALARM, 31);
1108static SENSOR_DEVICE_ATTR_2_RO(temp1_input, temp, INPUT, 0);
1109static SENSOR_DEVICE_ATTR_2_RO(temp1_alarm, temp, ALARM, 0);
1110static SENSOR_DEVICE_ATTR_2_RO(temp1_fault, temp, FAULT, 0);
1111static SENSOR_DEVICE_ATTR_2_RW(temp1_max, temp, MAX, 0);
1112static SENSOR_DEVICE_ATTR_2_RW(temp1_min, temp, MIN, 0);
1113static SENSOR_DEVICE_ATTR_2_RW(temp1_offset, temp, OFFSET, 0);
1114static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_point1_temp, temp, AUTOMIN, 0);
1115static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_point2_temp, point2, 0, 0);
1116static SENSOR_DEVICE_ATTR_2_RW(temp1_crit, temp, THERM, 0);
1117static SENSOR_DEVICE_ATTR_2_RW(temp1_crit_hyst, temp, HYSTERSIS, 0);
1118static SENSOR_DEVICE_ATTR_2_RW(temp1_smoothing, temp_st, 0, 0);
1119static SENSOR_DEVICE_ATTR_2_RO(temp2_input, temp, INPUT, 1);
1120static SENSOR_DEVICE_ATTR_2_RO(temp2_alarm, temp, ALARM, 1);
1121static SENSOR_DEVICE_ATTR_2_RW(temp2_max, temp, MAX, 1);
1122static SENSOR_DEVICE_ATTR_2_RW(temp2_min, temp, MIN, 1);
1123static SENSOR_DEVICE_ATTR_2_RW(temp2_offset, temp, OFFSET, 1);
1124static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_point1_temp, temp, AUTOMIN, 1);
1125static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_point2_temp, point2, 0, 1);
1126static SENSOR_DEVICE_ATTR_2_RW(temp2_crit, temp, THERM, 1);
1127static SENSOR_DEVICE_ATTR_2_RW(temp2_crit_hyst, temp, HYSTERSIS, 1);
1128static SENSOR_DEVICE_ATTR_2_RW(temp2_smoothing, temp_st, 0, 1);
1129static SENSOR_DEVICE_ATTR_2_RO(temp3_input, temp, INPUT, 2);
1130static SENSOR_DEVICE_ATTR_2_RO(temp3_alarm, temp, ALARM, 2);
1131static SENSOR_DEVICE_ATTR_2_RO(temp3_fault, temp, FAULT, 2);
1132static SENSOR_DEVICE_ATTR_2_RW(temp3_max, temp, MAX, 2);
1133static SENSOR_DEVICE_ATTR_2_RW(temp3_min, temp, MIN, 2);
1134static SENSOR_DEVICE_ATTR_2_RW(temp3_offset, temp, OFFSET, 2);
1135static SENSOR_DEVICE_ATTR_2_RW(temp3_auto_point1_temp, temp, AUTOMIN, 2);
1136static SENSOR_DEVICE_ATTR_2_RW(temp3_auto_point2_temp, point2, 0, 2);
1137static SENSOR_DEVICE_ATTR_2_RW(temp3_crit, temp, THERM, 2);
1138static SENSOR_DEVICE_ATTR_2_RW(temp3_crit_hyst, temp, HYSTERSIS, 2);
1139static SENSOR_DEVICE_ATTR_2_RW(temp3_smoothing, temp_st, 0, 2);
1140static SENSOR_DEVICE_ATTR_2_RO(fan1_input, tach, INPUT, 0);
1141static SENSOR_DEVICE_ATTR_2_RW(fan1_min, tach, MIN, 0);
1142static SENSOR_DEVICE_ATTR_2_RO(fan1_alarm, tach, ALARM, 0);
1143static SENSOR_DEVICE_ATTR_2_RO(fan2_input, tach, INPUT, 1);
1144static SENSOR_DEVICE_ATTR_2_RW(fan2_min, tach, MIN, 1);
1145static SENSOR_DEVICE_ATTR_2_RO(fan2_alarm, tach, ALARM, 1);
1146static SENSOR_DEVICE_ATTR_2_RO(fan3_input, tach, INPUT, 2);
1147static SENSOR_DEVICE_ATTR_2_RW(fan3_min, tach, MIN, 2);
1148static SENSOR_DEVICE_ATTR_2_RO(fan3_alarm, tach, ALARM, 2);
1149static SENSOR_DEVICE_ATTR_2_RO(fan4_input, tach, INPUT, 3);
1150static SENSOR_DEVICE_ATTR_2_RW(fan4_min, tach, MIN, 3);
1151static SENSOR_DEVICE_ATTR_2_RO(fan4_alarm, tach, ALARM, 3);
1152static SENSOR_DEVICE_ATTR_2_RW(pwm1, pwm, INPUT, 0);
1153static SENSOR_DEVICE_ATTR_2_RW(pwm1_freq, pwmfreq, INPUT, 0);
1154static SENSOR_DEVICE_ATTR_2_RW(pwm1_enable, pwmctrl, INPUT, 0);
1155static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_channels_temp, pwmchan, INPUT, 0);
1156static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point1_pwm, pwm, MIN, 0);
1157static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point2_pwm, pwm, MAX, 0);
1158static SENSOR_DEVICE_ATTR_2_RW(pwm1_stall_disable, stall_disable, 0, 0);
1159static SENSOR_DEVICE_ATTR_2_RW(pwm2, pwm, INPUT, 1);
1160static SENSOR_DEVICE_ATTR_2_RW(pwm2_freq, pwmfreq, INPUT, 1);
1161static SENSOR_DEVICE_ATTR_2_RW(pwm2_enable, pwmctrl, INPUT, 1);
1162static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_channels_temp, pwmchan, INPUT, 1);
1163static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point1_pwm, pwm, MIN, 1);
1164static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point2_pwm, pwm, MAX, 1);
1165static SENSOR_DEVICE_ATTR_2_RW(pwm2_stall_disable, stall_disable, 0, 1);
1166static SENSOR_DEVICE_ATTR_2_RW(pwm3, pwm, INPUT, 2);
1167static SENSOR_DEVICE_ATTR_2_RW(pwm3_freq, pwmfreq, INPUT, 2);
1168static SENSOR_DEVICE_ATTR_2_RW(pwm3_enable, pwmctrl, INPUT, 2);
1169static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_channels_temp, pwmchan, INPUT, 2);
1170static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point1_pwm, pwm, MIN, 2);
1171static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point2_pwm, pwm, MAX, 2);
1172static SENSOR_DEVICE_ATTR_2_RW(pwm3_stall_disable, stall_disable, 0, 2);
1173
1174/* Non-standard name, might need revisiting */
1175static DEVICE_ATTR_RW(pwm_use_point2_pwm_at_crit);
1176
1177static DEVICE_ATTR_RW(vrm);
1178static DEVICE_ATTR_RO(cpu0_vid);
1179
1180static struct attribute *adt7475_attrs[] = {
1181 &sensor_dev_attr_in1_input.dev_attr.attr,
1182 &sensor_dev_attr_in1_max.dev_attr.attr,
1183 &sensor_dev_attr_in1_min.dev_attr.attr,
1184 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1185 &sensor_dev_attr_in2_input.dev_attr.attr,
1186 &sensor_dev_attr_in2_max.dev_attr.attr,
1187 &sensor_dev_attr_in2_min.dev_attr.attr,
1188 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1189 &sensor_dev_attr_temp1_input.dev_attr.attr,
1190 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1191 &sensor_dev_attr_temp1_fault.dev_attr.attr,
1192 &sensor_dev_attr_temp1_max.dev_attr.attr,
1193 &sensor_dev_attr_temp1_min.dev_attr.attr,
1194 &sensor_dev_attr_temp1_offset.dev_attr.attr,
1195 &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr,
1196 &sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr,
1197 &sensor_dev_attr_temp1_crit.dev_attr.attr,
1198 &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
1199 &sensor_dev_attr_temp1_smoothing.dev_attr.attr,
1200 &sensor_dev_attr_temp2_input.dev_attr.attr,
1201 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1202 &sensor_dev_attr_temp2_max.dev_attr.attr,
1203 &sensor_dev_attr_temp2_min.dev_attr.attr,
1204 &sensor_dev_attr_temp2_offset.dev_attr.attr,
1205 &sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr,
1206 &sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr,
1207 &sensor_dev_attr_temp2_crit.dev_attr.attr,
1208 &sensor_dev_attr_temp2_crit_hyst.dev_attr.attr,
1209 &sensor_dev_attr_temp2_smoothing.dev_attr.attr,
1210 &sensor_dev_attr_temp3_input.dev_attr.attr,
1211 &sensor_dev_attr_temp3_fault.dev_attr.attr,
1212 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1213 &sensor_dev_attr_temp3_max.dev_attr.attr,
1214 &sensor_dev_attr_temp3_min.dev_attr.attr,
1215 &sensor_dev_attr_temp3_offset.dev_attr.attr,
1216 &sensor_dev_attr_temp3_auto_point1_temp.dev_attr.attr,
1217 &sensor_dev_attr_temp3_auto_point2_temp.dev_attr.attr,
1218 &sensor_dev_attr_temp3_crit.dev_attr.attr,
1219 &sensor_dev_attr_temp3_crit_hyst.dev_attr.attr,
1220 &sensor_dev_attr_temp3_smoothing.dev_attr.attr,
1221 &sensor_dev_attr_fan1_input.dev_attr.attr,
1222 &sensor_dev_attr_fan1_min.dev_attr.attr,
1223 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1224 &sensor_dev_attr_fan2_input.dev_attr.attr,
1225 &sensor_dev_attr_fan2_min.dev_attr.attr,
1226 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1227 &sensor_dev_attr_fan3_input.dev_attr.attr,
1228 &sensor_dev_attr_fan3_min.dev_attr.attr,
1229 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1230 &sensor_dev_attr_pwm1.dev_attr.attr,
1231 &sensor_dev_attr_pwm1_freq.dev_attr.attr,
1232 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1233 &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
1234 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1235 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1236 &sensor_dev_attr_pwm1_stall_disable.dev_attr.attr,
1237 &sensor_dev_attr_pwm3.dev_attr.attr,
1238 &sensor_dev_attr_pwm3_freq.dev_attr.attr,
1239 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1240 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
1241 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1242 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1243 &sensor_dev_attr_pwm3_stall_disable.dev_attr.attr,
1244 &dev_attr_pwm_use_point2_pwm_at_crit.attr,
1245 NULL,
1246};
1247
1248static struct attribute *fan4_attrs[] = {
1249 &sensor_dev_attr_fan4_input.dev_attr.attr,
1250 &sensor_dev_attr_fan4_min.dev_attr.attr,
1251 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1252 NULL
1253};
1254
1255static struct attribute *pwm2_attrs[] = {
1256 &sensor_dev_attr_pwm2.dev_attr.attr,
1257 &sensor_dev_attr_pwm2_freq.dev_attr.attr,
1258 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1259 &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
1260 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1261 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1262 &sensor_dev_attr_pwm2_stall_disable.dev_attr.attr,
1263 NULL
1264};
1265
1266static struct attribute *in0_attrs[] = {
1267 &sensor_dev_attr_in0_input.dev_attr.attr,
1268 &sensor_dev_attr_in0_max.dev_attr.attr,
1269 &sensor_dev_attr_in0_min.dev_attr.attr,
1270 &sensor_dev_attr_in0_alarm.dev_attr.attr,
1271 NULL
1272};
1273
1274static struct attribute *in3_attrs[] = {
1275 &sensor_dev_attr_in3_input.dev_attr.attr,
1276 &sensor_dev_attr_in3_max.dev_attr.attr,
1277 &sensor_dev_attr_in3_min.dev_attr.attr,
1278 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1279 NULL
1280};
1281
1282static struct attribute *in4_attrs[] = {
1283 &sensor_dev_attr_in4_input.dev_attr.attr,
1284 &sensor_dev_attr_in4_max.dev_attr.attr,
1285 &sensor_dev_attr_in4_min.dev_attr.attr,
1286 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1287 NULL
1288};
1289
1290static struct attribute *in5_attrs[] = {
1291 &sensor_dev_attr_in5_input.dev_attr.attr,
1292 &sensor_dev_attr_in5_max.dev_attr.attr,
1293 &sensor_dev_attr_in5_min.dev_attr.attr,
1294 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1295 NULL
1296};
1297
1298static struct attribute *vid_attrs[] = {
1299 &dev_attr_cpu0_vid.attr,
1300 &dev_attr_vrm.attr,
1301 NULL
1302};
1303
1304static const struct attribute_group adt7475_attr_group = { .attrs = adt7475_attrs };
1305static const struct attribute_group fan4_attr_group = { .attrs = fan4_attrs };
1306static const struct attribute_group pwm2_attr_group = { .attrs = pwm2_attrs };
1307static const struct attribute_group in0_attr_group = { .attrs = in0_attrs };
1308static const struct attribute_group in3_attr_group = { .attrs = in3_attrs };
1309static const struct attribute_group in4_attr_group = { .attrs = in4_attrs };
1310static const struct attribute_group in5_attr_group = { .attrs = in5_attrs };
1311static const struct attribute_group vid_attr_group = { .attrs = vid_attrs };
1312
1313static int adt7475_detect(struct i2c_client *client,
1314 struct i2c_board_info *info)
1315{
1316 struct i2c_adapter *adapter = client->adapter;
1317 int vendid, devid, devid2;
1318 const char *name;
1319
1320 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1321 return -ENODEV;
1322
1323 vendid = adt7475_read(REG_VENDID);
1324 devid2 = adt7475_read(REG_DEVID2);
1325 if (vendid != 0x41 || /* Analog Devices */
1326 (devid2 & 0xf8) != 0x68)
1327 return -ENODEV;
1328
1329 devid = adt7475_read(REG_DEVID);
1330 if (devid == 0x73)
1331 name = "adt7473";
1332 else if (devid == 0x75 && client->addr == 0x2e)
1333 name = "adt7475";
1334 else if (devid == 0x76)
1335 name = "adt7476";
1336 else if ((devid2 & 0xfc) == 0x6c)
1337 name = "adt7490";
1338 else {
1339 dev_dbg(&adapter->dev,
1340 "Couldn't detect an ADT7473/75/76/90 part at "
1341 "0x%02x\n", (unsigned int)client->addr);
1342 return -ENODEV;
1343 }
1344
1345 strscpy(info->type, name, I2C_NAME_SIZE);
1346
1347 return 0;
1348}
1349
1350static int adt7475_update_limits(struct i2c_client *client)
1351{
1352 struct adt7475_data *data = i2c_get_clientdata(client);
1353 int i;
1354 int ret;
1355
1356 ret = adt7475_read(REG_CONFIG4);
1357 if (ret < 0)
1358 return ret;
1359 data->config4 = ret;
1360
1361 ret = adt7475_read(REG_CONFIG5);
1362 if (ret < 0)
1363 return ret;
1364 data->config5 = ret;
1365
1366 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
1367 if (!(data->has_voltage & (1 << i)))
1368 continue;
1369 /* Adjust values so they match the input precision */
1370 ret = adt7475_read(VOLTAGE_MIN_REG(i));
1371 if (ret < 0)
1372 return ret;
1373 data->voltage[MIN][i] = ret << 2;
1374
1375 ret = adt7475_read(VOLTAGE_MAX_REG(i));
1376 if (ret < 0)
1377 return ret;
1378 data->voltage[MAX][i] = ret << 2;
1379 }
1380
1381 if (data->has_voltage & (1 << 5)) {
1382 ret = adt7475_read(REG_VTT_MIN);
1383 if (ret < 0)
1384 return ret;
1385 data->voltage[MIN][5] = ret << 2;
1386
1387 ret = adt7475_read(REG_VTT_MAX);
1388 if (ret < 0)
1389 return ret;
1390 data->voltage[MAX][5] = ret << 2;
1391 }
1392
1393 for (i = 0; i < ADT7475_TEMP_COUNT; i++) {
1394 /* Adjust values so they match the input precision */
1395 ret = adt7475_read(TEMP_MIN_REG(i));
1396 if (ret < 0)
1397 return ret;
1398 data->temp[MIN][i] = ret << 2;
1399
1400 ret = adt7475_read(TEMP_MAX_REG(i));
1401 if (ret < 0)
1402 return ret;
1403 data->temp[MAX][i] = ret << 2;
1404
1405 ret = adt7475_read(TEMP_TMIN_REG(i));
1406 if (ret < 0)
1407 return ret;
1408 data->temp[AUTOMIN][i] = ret << 2;
1409
1410 ret = adt7475_read(TEMP_THERM_REG(i));
1411 if (ret < 0)
1412 return ret;
1413 data->temp[THERM][i] = ret << 2;
1414
1415 ret = adt7475_read(TEMP_OFFSET_REG(i));
1416 if (ret < 0)
1417 return ret;
1418 data->temp[OFFSET][i] = ret;
1419 }
1420 adt7475_read_hystersis(client);
1421
1422 for (i = 0; i < ADT7475_TACH_COUNT; i++) {
1423 if (i == 3 && !data->has_fan4)
1424 continue;
1425 ret = adt7475_read_word(client, TACH_MIN_REG(i));
1426 if (ret < 0)
1427 return ret;
1428 data->tach[MIN][i] = ret;
1429 }
1430
1431 for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1432 if (i == 1 && !data->has_pwm2)
1433 continue;
1434 ret = adt7475_read(PWM_MAX_REG(i));
1435 if (ret < 0)
1436 return ret;
1437 data->pwm[MAX][i] = ret;
1438
1439 ret = adt7475_read(PWM_MIN_REG(i));
1440 if (ret < 0)
1441 return ret;
1442 data->pwm[MIN][i] = ret;
1443 /* Set the channel and control information */
1444 adt7475_read_pwm(client, i);
1445 }
1446
1447 ret = adt7475_read(TEMP_TRANGE_REG(0));
1448 if (ret < 0)
1449 return ret;
1450 data->range[0] = ret;
1451
1452 ret = adt7475_read(TEMP_TRANGE_REG(1));
1453 if (ret < 0)
1454 return ret;
1455 data->range[1] = ret;
1456
1457 ret = adt7475_read(TEMP_TRANGE_REG(2));
1458 if (ret < 0)
1459 return ret;
1460 data->range[2] = ret;
1461
1462 return 0;
1463}
1464
1465static int load_config3(const struct i2c_client *client, const char *propname)
1466{
1467 const char *function;
1468 u8 config3;
1469 int ret;
1470
1471 ret = of_property_read_string(client->dev.of_node, propname, &function);
1472 if (!ret) {
1473 ret = adt7475_read(REG_CONFIG3);
1474 if (ret < 0)
1475 return ret;
1476
1477 config3 = ret & ~CONFIG3_SMBALERT;
1478 if (!strcmp("pwm2", function))
1479 ;
1480 else if (!strcmp("smbalert#", function))
1481 config3 |= CONFIG3_SMBALERT;
1482 else
1483 return -EINVAL;
1484
1485 return i2c_smbus_write_byte_data(client, REG_CONFIG3, config3);
1486 }
1487
1488 return 0;
1489}
1490
1491static int load_config4(const struct i2c_client *client, const char *propname)
1492{
1493 const char *function;
1494 u8 config4;
1495 int ret;
1496
1497 ret = of_property_read_string(client->dev.of_node, propname, &function);
1498 if (!ret) {
1499 ret = adt7475_read(REG_CONFIG4);
1500 if (ret < 0)
1501 return ret;
1502
1503 config4 = ret & ~CONFIG4_PINFUNC;
1504
1505 if (!strcmp("tach4", function))
1506 ;
1507 else if (!strcmp("therm#", function))
1508 config4 |= CONFIG4_THERM;
1509 else if (!strcmp("smbalert#", function))
1510 config4 |= CONFIG4_SMBALERT;
1511 else if (!strcmp("gpio", function))
1512 config4 |= CONFIG4_PINFUNC;
1513 else
1514 return -EINVAL;
1515
1516 return i2c_smbus_write_byte_data(client, REG_CONFIG4, config4);
1517 }
1518
1519 return 0;
1520}
1521
1522static int load_config(const struct i2c_client *client, enum chips chip)
1523{
1524 int err;
1525 const char *prop1, *prop2;
1526
1527 switch (chip) {
1528 case adt7473:
1529 case adt7475:
1530 prop1 = "adi,pin5-function";
1531 prop2 = "adi,pin9-function";
1532 break;
1533 case adt7476:
1534 case adt7490:
1535 prop1 = "adi,pin10-function";
1536 prop2 = "adi,pin14-function";
1537 break;
1538 }
1539
1540 err = load_config3(client, prop1);
1541 if (err) {
1542 dev_err(&client->dev, "failed to configure %s\n", prop1);
1543 return err;
1544 }
1545
1546 err = load_config4(client, prop2);
1547 if (err) {
1548 dev_err(&client->dev, "failed to configure %s\n", prop2);
1549 return err;
1550 }
1551
1552 return 0;
1553}
1554
1555static int set_property_bit(const struct i2c_client *client, char *property,
1556 u8 *config, u8 bit_index)
1557{
1558 u32 prop_value = 0;
1559 int ret = of_property_read_u32(client->dev.of_node, property,
1560 &prop_value);
1561
1562 if (!ret) {
1563 if (prop_value)
1564 *config |= (1 << bit_index);
1565 else
1566 *config &= ~(1 << bit_index);
1567 }
1568
1569 return ret;
1570}
1571
1572static int load_attenuators(const struct i2c_client *client, enum chips chip,
1573 struct adt7475_data *data)
1574{
1575 switch (chip) {
1576 case adt7476:
1577 case adt7490:
1578 set_property_bit(client, "adi,bypass-attenuator-in0",
1579 &data->config4, 4);
1580 set_property_bit(client, "adi,bypass-attenuator-in1",
1581 &data->config4, 5);
1582 set_property_bit(client, "adi,bypass-attenuator-in3",
1583 &data->config4, 6);
1584 set_property_bit(client, "adi,bypass-attenuator-in4",
1585 &data->config4, 7);
1586
1587 return i2c_smbus_write_byte_data(client, REG_CONFIG4,
1588 data->config4);
1589 case adt7473:
1590 case adt7475:
1591 set_property_bit(client, "adi,bypass-attenuator-in1",
1592 &data->config2, 5);
1593
1594 return i2c_smbus_write_byte_data(client, REG_CONFIG2,
1595 data->config2);
1596 }
1597
1598 return 0;
1599}
1600
1601static int adt7475_set_pwm_polarity(struct i2c_client *client)
1602{
1603 u32 states[ADT7475_PWM_COUNT];
1604 int ret, i;
1605 u8 val;
1606
1607 ret = of_property_read_u32_array(client->dev.of_node,
1608 "adi,pwm-active-state", states,
1609 ARRAY_SIZE(states));
1610 if (ret)
1611 return ret;
1612
1613 for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1614 ret = adt7475_read(PWM_CONFIG_REG(i));
1615 if (ret < 0)
1616 return ret;
1617 val = ret;
1618 if (states[i])
1619 val &= ~BIT(4);
1620 else
1621 val |= BIT(4);
1622
1623 ret = i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(i), val);
1624 if (ret)
1625 return ret;
1626 }
1627
1628 return 0;
1629}
1630
1631static int adt7475_probe(struct i2c_client *client)
1632{
1633 enum chips chip;
1634 static const char * const names[] = {
1635 [adt7473] = "ADT7473",
1636 [adt7475] = "ADT7475",
1637 [adt7476] = "ADT7476",
1638 [adt7490] = "ADT7490",
1639 };
1640
1641 struct adt7475_data *data;
1642 struct device *hwmon_dev;
1643 int i, ret = 0, revision, group_num = 0;
1644 u8 config3;
1645 const struct i2c_device_id *id = i2c_match_id(adt7475_id, client);
1646
1647 data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
1648 if (data == NULL)
1649 return -ENOMEM;
1650
1651 mutex_init(&data->lock);
1652 data->client = client;
1653 i2c_set_clientdata(client, data);
1654
1655 if (client->dev.of_node)
1656 chip = (enum chips)of_device_get_match_data(&client->dev);
1657 else
1658 chip = id->driver_data;
1659
1660 /* Initialize device-specific values */
1661 switch (chip) {
1662 case adt7476:
1663 data->has_voltage = 0x0e; /* in1 to in3 */
1664 revision = adt7475_read(REG_DEVID2) & 0x07;
1665 break;
1666 case adt7490:
1667 data->has_voltage = 0x3e; /* in1 to in5 */
1668 revision = adt7475_read(REG_DEVID2) & 0x03;
1669 if (revision == 0x03)
1670 revision += adt7475_read(REG_DEVREV2);
1671 break;
1672 default:
1673 data->has_voltage = 0x06; /* in1, in2 */
1674 revision = adt7475_read(REG_DEVID2) & 0x07;
1675 }
1676
1677 ret = load_config(client, chip);
1678 if (ret)
1679 return ret;
1680
1681 config3 = adt7475_read(REG_CONFIG3);
1682 /* Pin PWM2 may alternatively be used for ALERT output */
1683 if (!(config3 & CONFIG3_SMBALERT))
1684 data->has_pwm2 = 1;
1685 /* Meaning of this bit is inverted for the ADT7473-1 */
1686 if (id->driver_data == adt7473 && revision >= 1)
1687 data->has_pwm2 = !data->has_pwm2;
1688
1689 data->config4 = adt7475_read(REG_CONFIG4);
1690 /* Pin TACH4 may alternatively be used for THERM */
1691 if ((data->config4 & CONFIG4_PINFUNC) == 0x0)
1692 data->has_fan4 = 1;
1693
1694 /*
1695 * THERM configuration is more complex on the ADT7476 and ADT7490,
1696 * because 2 different pins (TACH4 and +2.5 Vin) can be used for
1697 * this function
1698 */
1699 if (id->driver_data == adt7490) {
1700 if ((data->config4 & CONFIG4_PINFUNC) == 0x1 &&
1701 !(config3 & CONFIG3_THERM))
1702 data->has_fan4 = 1;
1703 }
1704 if (id->driver_data == adt7476 || id->driver_data == adt7490) {
1705 if (!(config3 & CONFIG3_THERM) ||
1706 (data->config4 & CONFIG4_PINFUNC) == 0x1)
1707 data->has_voltage |= (1 << 0); /* in0 */
1708 }
1709
1710 /*
1711 * On the ADT7476, the +12V input pin may instead be used as VID5,
1712 * and VID pins may alternatively be used as GPIO
1713 */
1714 if (id->driver_data == adt7476) {
1715 u8 vid = adt7475_read(REG_VID);
1716 if (!(vid & VID_VIDSEL))
1717 data->has_voltage |= (1 << 4); /* in4 */
1718
1719 data->has_vid = !(adt7475_read(REG_CONFIG5) & CONFIG5_VIDGPIO);
1720 }
1721
1722 /* Voltage attenuators can be bypassed, globally or individually */
1723 data->config2 = adt7475_read(REG_CONFIG2);
1724 ret = load_attenuators(client, chip, data);
1725 if (ret)
1726 dev_warn(&client->dev, "Error configuring attenuator bypass\n");
1727
1728 if (data->config2 & CONFIG2_ATTN) {
1729 data->bypass_attn = (0x3 << 3) | 0x3;
1730 } else {
1731 data->bypass_attn = ((data->config4 & CONFIG4_ATTN_IN10) >> 4) |
1732 ((data->config4 & CONFIG4_ATTN_IN43) >> 3);
1733 }
1734 data->bypass_attn &= data->has_voltage;
1735
1736 /*
1737 * Call adt7475_read_pwm for all pwm's as this will reprogram any
1738 * pwm's which are disabled to manual mode with 0% duty cycle
1739 */
1740 for (i = 0; i < ADT7475_PWM_COUNT; i++)
1741 adt7475_read_pwm(client, i);
1742
1743 ret = adt7475_set_pwm_polarity(client);
1744 if (ret && ret != -EINVAL)
1745 dev_warn(&client->dev, "Error configuring pwm polarity\n");
1746
1747 /* Start monitoring */
1748 switch (chip) {
1749 case adt7475:
1750 case adt7476:
1751 i2c_smbus_write_byte_data(client, REG_CONFIG1,
1752 adt7475_read(REG_CONFIG1) | 0x01);
1753 break;
1754 default:
1755 break;
1756 }
1757
1758 data->groups[group_num++] = &adt7475_attr_group;
1759
1760 /* Features that can be disabled individually */
1761 if (data->has_fan4) {
1762 data->groups[group_num++] = &fan4_attr_group;
1763 }
1764 if (data->has_pwm2) {
1765 data->groups[group_num++] = &pwm2_attr_group;
1766 }
1767 if (data->has_voltage & (1 << 0)) {
1768 data->groups[group_num++] = &in0_attr_group;
1769 }
1770 if (data->has_voltage & (1 << 3)) {
1771 data->groups[group_num++] = &in3_attr_group;
1772 }
1773 if (data->has_voltage & (1 << 4)) {
1774 data->groups[group_num++] = &in4_attr_group;
1775 }
1776 if (data->has_voltage & (1 << 5)) {
1777 data->groups[group_num++] = &in5_attr_group;
1778 }
1779 if (data->has_vid) {
1780 data->vrm = vid_which_vrm();
1781 data->groups[group_num] = &vid_attr_group;
1782 }
1783
1784 /* register device with all the acquired attributes */
1785 hwmon_dev = devm_hwmon_device_register_with_groups(&client->dev,
1786 client->name, data,
1787 data->groups);
1788
1789 if (IS_ERR(hwmon_dev)) {
1790 ret = PTR_ERR(hwmon_dev);
1791 return ret;
1792 }
1793
1794 dev_info(&client->dev, "%s device, revision %d\n",
1795 names[id->driver_data], revision);
1796 if ((data->has_voltage & 0x11) || data->has_fan4 || data->has_pwm2)
1797 dev_info(&client->dev, "Optional features:%s%s%s%s%s\n",
1798 (data->has_voltage & (1 << 0)) ? " in0" : "",
1799 (data->has_voltage & (1 << 4)) ? " in4" : "",
1800 data->has_fan4 ? " fan4" : "",
1801 data->has_pwm2 ? " pwm2" : "",
1802 data->has_vid ? " vid" : "");
1803 if (data->bypass_attn)
1804 dev_info(&client->dev, "Bypassing attenuators on:%s%s%s%s\n",
1805 (data->bypass_attn & (1 << 0)) ? " in0" : "",
1806 (data->bypass_attn & (1 << 1)) ? " in1" : "",
1807 (data->bypass_attn & (1 << 3)) ? " in3" : "",
1808 (data->bypass_attn & (1 << 4)) ? " in4" : "");
1809
1810 /* Limits and settings, should never change update more than once */
1811 ret = adt7475_update_limits(client);
1812 if (ret)
1813 return ret;
1814
1815 return 0;
1816}
1817
1818static struct i2c_driver adt7475_driver = {
1819 .class = I2C_CLASS_HWMON,
1820 .driver = {
1821 .name = "adt7475",
1822 .of_match_table = of_match_ptr(adt7475_of_match),
1823 },
1824 .probe_new = adt7475_probe,
1825 .id_table = adt7475_id,
1826 .detect = adt7475_detect,
1827 .address_list = normal_i2c,
1828};
1829
1830static void adt7475_read_hystersis(struct i2c_client *client)
1831{
1832 struct adt7475_data *data = i2c_get_clientdata(client);
1833
1834 data->temp[HYSTERSIS][0] = (u16) adt7475_read(REG_REMOTE1_HYSTERSIS);
1835 data->temp[HYSTERSIS][1] = data->temp[HYSTERSIS][0];
1836 data->temp[HYSTERSIS][2] = (u16) adt7475_read(REG_REMOTE2_HYSTERSIS);
1837}
1838
1839static void adt7475_read_pwm(struct i2c_client *client, int index)
1840{
1841 struct adt7475_data *data = i2c_get_clientdata(client);
1842 unsigned int v;
1843
1844 data->pwm[CONTROL][index] = adt7475_read(PWM_CONFIG_REG(index));
1845
1846 /*
1847 * Figure out the internal value for pwmctrl and pwmchan
1848 * based on the current settings
1849 */
1850 v = (data->pwm[CONTROL][index] >> 5) & 7;
1851
1852 if (v == 3)
1853 data->pwmctl[index] = 0;
1854 else if (v == 7)
1855 data->pwmctl[index] = 1;
1856 else if (v == 4) {
1857 /*
1858 * The fan is disabled - we don't want to
1859 * support that, so change to manual mode and
1860 * set the duty cycle to 0 instead
1861 */
1862 data->pwm[INPUT][index] = 0;
1863 data->pwm[CONTROL][index] &= ~0xE0;
1864 data->pwm[CONTROL][index] |= (7 << 5);
1865
1866 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
1867 data->pwm[INPUT][index]);
1868
1869 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
1870 data->pwm[CONTROL][index]);
1871
1872 data->pwmctl[index] = 1;
1873 } else {
1874 data->pwmctl[index] = 2;
1875
1876 switch (v) {
1877 case 0:
1878 data->pwmchan[index] = 1;
1879 break;
1880 case 1:
1881 data->pwmchan[index] = 2;
1882 break;
1883 case 2:
1884 data->pwmchan[index] = 4;
1885 break;
1886 case 5:
1887 data->pwmchan[index] = 6;
1888 break;
1889 case 6:
1890 data->pwmchan[index] = 7;
1891 break;
1892 }
1893 }
1894}
1895
1896static int adt7475_update_measure(struct device *dev)
1897{
1898 struct adt7475_data *data = dev_get_drvdata(dev);
1899 struct i2c_client *client = data->client;
1900 u16 ext;
1901 int i;
1902 int ret;
1903
1904 ret = adt7475_read(REG_STATUS2);
1905 if (ret < 0)
1906 return ret;
1907 data->alarms = ret << 8;
1908
1909 ret = adt7475_read(REG_STATUS1);
1910 if (ret < 0)
1911 return ret;
1912 data->alarms |= ret;
1913
1914 ret = adt7475_read(REG_EXTEND2);
1915 if (ret < 0)
1916 return ret;
1917
1918 ext = (ret << 8);
1919
1920 ret = adt7475_read(REG_EXTEND1);
1921 if (ret < 0)
1922 return ret;
1923
1924 ext |= ret;
1925
1926 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
1927 if (!(data->has_voltage & (1 << i)))
1928 continue;
1929 ret = adt7475_read(VOLTAGE_REG(i));
1930 if (ret < 0)
1931 return ret;
1932 data->voltage[INPUT][i] =
1933 (ret << 2) |
1934 ((ext >> (i * 2)) & 3);
1935 }
1936
1937 for (i = 0; i < ADT7475_TEMP_COUNT; i++) {
1938 ret = adt7475_read(TEMP_REG(i));
1939 if (ret < 0)
1940 return ret;
1941 data->temp[INPUT][i] =
1942 (ret << 2) |
1943 ((ext >> ((i + 5) * 2)) & 3);
1944 }
1945
1946 if (data->has_voltage & (1 << 5)) {
1947 ret = adt7475_read(REG_STATUS4);
1948 if (ret < 0)
1949 return ret;
1950 data->alarms |= ret << 24;
1951
1952 ret = adt7475_read(REG_EXTEND3);
1953 if (ret < 0)
1954 return ret;
1955 ext = ret;
1956
1957 ret = adt7475_read(REG_VTT);
1958 if (ret < 0)
1959 return ret;
1960 data->voltage[INPUT][5] = ret << 2 |
1961 ((ext >> 4) & 3);
1962 }
1963
1964 for (i = 0; i < ADT7475_TACH_COUNT; i++) {
1965 if (i == 3 && !data->has_fan4)
1966 continue;
1967 ret = adt7475_read_word(client, TACH_REG(i));
1968 if (ret < 0)
1969 return ret;
1970 data->tach[INPUT][i] = ret;
1971 }
1972
1973 /* Updated by hw when in auto mode */
1974 for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1975 if (i == 1 && !data->has_pwm2)
1976 continue;
1977 ret = adt7475_read(PWM_REG(i));
1978 if (ret < 0)
1979 return ret;
1980 data->pwm[INPUT][i] = ret;
1981 }
1982
1983 if (data->has_vid) {
1984 ret = adt7475_read(REG_VID);
1985 if (ret < 0)
1986 return ret;
1987 data->vid = ret & 0x3f;
1988 }
1989
1990 return 0;
1991}
1992
1993static struct adt7475_data *adt7475_update_device(struct device *dev)
1994{
1995 struct adt7475_data *data = dev_get_drvdata(dev);
1996 int ret;
1997
1998 mutex_lock(&data->lock);
1999
2000 /* Measurement values update every 2 seconds */
2001 if (time_after(jiffies, data->measure_updated + HZ * 2) ||
2002 !data->valid) {
2003 ret = adt7475_update_measure(dev);
2004 if (ret) {
2005 data->valid = false;
2006 mutex_unlock(&data->lock);
2007 return ERR_PTR(ret);
2008 }
2009 data->measure_updated = jiffies;
2010 data->valid = true;
2011 }
2012
2013 mutex_unlock(&data->lock);
2014
2015 return data;
2016}
2017
2018module_i2c_driver(adt7475_driver);
2019
2020MODULE_AUTHOR("Advanced Micro Devices, Inc");
2021MODULE_DESCRIPTION("adt7475 driver");
2022MODULE_LICENSE("GPL");