1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * adt7475 - Thermal sensor driver for the ADT7475 chip and derivatives
4 * Copyright (C) 2007-2008, Advanced Micro Devices, Inc.
5 * Copyright (C) 2008 Jordan Crouse <jordan@cosmicpenguin.net>
6 * Copyright (C) 2008 Hans de Goede <hdegoede@redhat.com>
7 * Copyright (C) 2009 Jean Delvare <jdelvare@suse.de>
8 *
9 * Derived from the lm83 driver by Jean Delvare
10 */
11
12 #include <linux/module.h>
13 #include <linux/init.h>
14 #include <linux/slab.h>
15 #include <linux/i2c.h>
16 #include <linux/hwmon.h>
17 #include <linux/hwmon-sysfs.h>
18 #include <linux/hwmon-vid.h>
19 #include <linux/err.h>
20 #include <linux/jiffies.h>
21 #include <linux/of.h>
22 #include <linux/util_macros.h>
23
24 /* Indexes for the sysfs hooks */
25
26 #define INPUT 0
27 #define MIN 1
28 #define MAX 2
29 #define CONTROL 3
30 #define OFFSET 3
31 #define AUTOMIN 4
32 #define THERM 5
33 #define HYSTERSIS 6
34
35 /*
36 * These are unique identifiers for the sysfs functions - unlike the
37 * numbers above, these are not also indexes into an array
38 */
39
40 #define ALARM 9
41 #define FAULT 10
42
43 /* 7475 Common Registers */
44
45 #define REG_DEVREV2 0x12 /* ADT7490 only */
46
47 #define REG_VTT 0x1E /* ADT7490 only */
48 #define REG_EXTEND3 0x1F /* ADT7490 only */
49
50 #define REG_VOLTAGE_BASE 0x20
51 #define REG_TEMP_BASE 0x25
52 #define REG_TACH_BASE 0x28
53 #define REG_PWM_BASE 0x30
54 #define REG_PWM_MAX_BASE 0x38
55
56 #define REG_DEVID 0x3D
57 #define REG_VENDID 0x3E
58 #define REG_DEVID2 0x3F
59
60 #define REG_CONFIG1 0x40
61
62 #define REG_STATUS1 0x41
63 #define REG_STATUS2 0x42
64
65 #define REG_VID 0x43 /* ADT7476 only */
66
67 #define REG_VOLTAGE_MIN_BASE 0x44
68 #define REG_VOLTAGE_MAX_BASE 0x45
69
70 #define REG_TEMP_MIN_BASE 0x4E
71 #define REG_TEMP_MAX_BASE 0x4F
72
73 #define REG_TACH_MIN_BASE 0x54
74
75 #define REG_PWM_CONFIG_BASE 0x5C
76
77 #define REG_TEMP_TRANGE_BASE 0x5F
78
79 #define REG_ENHANCE_ACOUSTICS1 0x62
80 #define REG_ENHANCE_ACOUSTICS2 0x63
81
82 #define REG_PWM_MIN_BASE 0x64
83
84 #define REG_TEMP_TMIN_BASE 0x67
85 #define REG_TEMP_THERM_BASE 0x6A
86
87 #define REG_REMOTE1_HYSTERSIS 0x6D
88 #define REG_REMOTE2_HYSTERSIS 0x6E
89
90 #define REG_TEMP_OFFSET_BASE 0x70
91
92 #define REG_CONFIG2 0x73
93
94 #define REG_EXTEND1 0x76
95 #define REG_EXTEND2 0x77
96
97 #define REG_CONFIG3 0x78
98 #define REG_CONFIG5 0x7C
99 #define REG_CONFIG4 0x7D
100
101 #define REG_STATUS4 0x81 /* ADT7490 only */
102
103 #define REG_VTT_MIN 0x84 /* ADT7490 only */
104 #define REG_VTT_MAX 0x86 /* ADT7490 only */
105
106 #define VID_VIDSEL 0x80 /* ADT7476 only */
107
108 #define CONFIG2_ATTN 0x20
109
110 #define CONFIG3_SMBALERT 0x01
111 #define CONFIG3_THERM 0x02
112
113 #define CONFIG4_PINFUNC 0x03
114 #define CONFIG4_THERM 0x01
115 #define CONFIG4_SMBALERT 0x02
116 #define CONFIG4_MAXDUTY 0x08
117 #define CONFIG4_ATTN_IN10 0x30
118 #define CONFIG4_ATTN_IN43 0xC0
119
120 #define CONFIG5_TWOSCOMP 0x01
121 #define CONFIG5_TEMPOFFSET 0x02
122 #define CONFIG5_VIDGPIO 0x10 /* ADT7476 only */
123
124 /* ADT7475 Settings */
125
126 #define ADT7475_VOLTAGE_COUNT 5 /* Not counting Vtt */
127 #define ADT7475_TEMP_COUNT 3
128 #define ADT7475_TACH_COUNT 4
129 #define ADT7475_PWM_COUNT 3
130
131 /* Macro to read the registers */
132
133 #define adt7475_read(reg) i2c_smbus_read_byte_data(client, (reg))
134
135 /* Macros to easily index the registers */
136
137 #define TACH_REG(idx) (REG_TACH_BASE + ((idx) * 2))
138 #define TACH_MIN_REG(idx) (REG_TACH_MIN_BASE + ((idx) * 2))
139
140 #define PWM_REG(idx) (REG_PWM_BASE + (idx))
141 #define PWM_MAX_REG(idx) (REG_PWM_MAX_BASE + (idx))
142 #define PWM_MIN_REG(idx) (REG_PWM_MIN_BASE + (idx))
143 #define PWM_CONFIG_REG(idx) (REG_PWM_CONFIG_BASE + (idx))
144
145 #define VOLTAGE_REG(idx) (REG_VOLTAGE_BASE + (idx))
146 #define VOLTAGE_MIN_REG(idx) (REG_VOLTAGE_MIN_BASE + ((idx) * 2))
147 #define VOLTAGE_MAX_REG(idx) (REG_VOLTAGE_MAX_BASE + ((idx) * 2))
148
149 #define TEMP_REG(idx) (REG_TEMP_BASE + (idx))
150 #define TEMP_MIN_REG(idx) (REG_TEMP_MIN_BASE + ((idx) * 2))
151 #define TEMP_MAX_REG(idx) (REG_TEMP_MAX_BASE + ((idx) * 2))
152 #define TEMP_TMIN_REG(idx) (REG_TEMP_TMIN_BASE + (idx))
153 #define TEMP_THERM_REG(idx) (REG_TEMP_THERM_BASE + (idx))
154 #define TEMP_OFFSET_REG(idx) (REG_TEMP_OFFSET_BASE + (idx))
155 #define TEMP_TRANGE_REG(idx) (REG_TEMP_TRANGE_BASE + (idx))
156
157 static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
158
159 enum chips { adt7473, adt7475, adt7476, adt7490 };
160
161 static const struct i2c_device_id adt7475_id[] = {
162 { "adt7473", adt7473 },
163 { "adt7475", adt7475 },
164 { "adt7476", adt7476 },
165 { "adt7490", adt7490 },
166 { }
167 };
168 MODULE_DEVICE_TABLE(i2c, adt7475_id);
169
170 static const struct of_device_id __maybe_unused adt7475_of_match[] = {
171 {
172 .compatible = "adi,adt7473",
173 .data = (void *)adt7473
174 },
175 {
176 .compatible = "adi,adt7475",
177 .data = (void *)adt7475
178 },
179 {
180 .compatible = "adi,adt7476",
181 .data = (void *)adt7476
182 },
183 {
184 .compatible = "adi,adt7490",
185 .data = (void *)adt7490
186 },
187 { },
188 };
189 MODULE_DEVICE_TABLE(of, adt7475_of_match);
190
191 struct adt7475_data {
192 struct i2c_client *client;
193 struct mutex lock;
194
195 unsigned long measure_updated;
196 bool valid;
197
198 u8 config2;
199 u8 config4;
200 u8 config5;
201 u8 has_voltage;
202 u8 bypass_attn; /* Bypass voltage attenuator */
203 u8 has_pwm2:1;
204 u8 has_fan4:1;
205 u8 has_vid:1;
206 u32 alarms;
207 u16 voltage[3][6];
208 u16 temp[7][3];
209 u16 tach[2][4];
210 u8 pwm[4][3];
211 u8 range[3];
212 u8 pwmctl[3];
213 u8 pwmchan[3];
214 u8 enh_acoustics[2];
215
216 u8 vid;
217 u8 vrm;
218 const struct attribute_group *groups[9];
219 };
220
221 static struct i2c_driver adt7475_driver;
222 static struct adt7475_data *adt7475_update_device(struct device *dev);
223 static void adt7475_read_hystersis(struct i2c_client *client);
224 static void adt7475_read_pwm(struct i2c_client *client, int index);
225
226 /* Given a temp value, convert it to register value */
227
temp2reg(struct adt7475_data * data,long val)228 static inline u16 temp2reg(struct adt7475_data *data, long val)
229 {
230 u16 ret;
231
232 if (!(data->config5 & CONFIG5_TWOSCOMP)) {
233 val = clamp_val(val, -64000, 191000);
234 ret = (val + 64500) / 1000;
235 } else {
236 val = clamp_val(val, -128000, 127000);
237 if (val < -500)
238 ret = (256500 + val) / 1000;
239 else
240 ret = (val + 500) / 1000;
241 }
242
243 return ret << 2;
244 }
245
246 /* Given a register value, convert it to a real temp value */
247
reg2temp(struct adt7475_data * data,u16 reg)248 static inline int reg2temp(struct adt7475_data *data, u16 reg)
249 {
250 if (data->config5 & CONFIG5_TWOSCOMP) {
251 if (reg >= 512)
252 return (reg - 1024) * 250;
253 else
254 return reg * 250;
255 } else
256 return (reg - 256) * 250;
257 }
258
tach2rpm(u16 tach)259 static inline int tach2rpm(u16 tach)
260 {
261 if (tach == 0 || tach == 0xFFFF)
262 return 0;
263
264 return (90000 * 60) / tach;
265 }
266
rpm2tach(unsigned long rpm)267 static inline u16 rpm2tach(unsigned long rpm)
268 {
269 if (rpm == 0)
270 return 0;
271
272 return clamp_val((90000 * 60) / rpm, 1, 0xFFFF);
273 }
274
275 /* Scaling factors for voltage inputs, taken from the ADT7490 datasheet */
276 static const int adt7473_in_scaling[ADT7475_VOLTAGE_COUNT + 1][2] = {
277 { 45, 94 }, /* +2.5V */
278 { 175, 525 }, /* Vccp */
279 { 68, 71 }, /* Vcc */
280 { 93, 47 }, /* +5V */
281 { 120, 20 }, /* +12V */
282 { 45, 45 }, /* Vtt */
283 };
284
reg2volt(int channel,u16 reg,u8 bypass_attn)285 static inline int reg2volt(int channel, u16 reg, u8 bypass_attn)
286 {
287 const int *r = adt7473_in_scaling[channel];
288
289 if (bypass_attn & (1 << channel))
290 return DIV_ROUND_CLOSEST(reg * 2250, 1024);
291 return DIV_ROUND_CLOSEST(reg * (r[0] + r[1]) * 2250, r[1] * 1024);
292 }
293
volt2reg(int channel,long volt,u8 bypass_attn)294 static inline u16 volt2reg(int channel, long volt, u8 bypass_attn)
295 {
296 const int *r = adt7473_in_scaling[channel];
297 long reg;
298
299 if (bypass_attn & (1 << channel))
300 reg = DIV_ROUND_CLOSEST(volt * 1024, 2250);
301 else
302 reg = DIV_ROUND_CLOSEST(volt * r[1] * 1024,
303 (r[0] + r[1]) * 2250);
304 return clamp_val(reg, 0, 1023) & (0xff << 2);
305 }
306
adt7475_read_word(struct i2c_client * client,int reg)307 static int adt7475_read_word(struct i2c_client *client, int reg)
308 {
309 int val1, val2;
310
311 val1 = i2c_smbus_read_byte_data(client, reg);
312 if (val1 < 0)
313 return val1;
314 val2 = i2c_smbus_read_byte_data(client, reg + 1);
315 if (val2 < 0)
316 return val2;
317
318 return val1 | (val2 << 8);
319 }
320
adt7475_write_word(struct i2c_client * client,int reg,u16 val)321 static void adt7475_write_word(struct i2c_client *client, int reg, u16 val)
322 {
323 i2c_smbus_write_byte_data(client, reg + 1, val >> 8);
324 i2c_smbus_write_byte_data(client, reg, val & 0xFF);
325 }
326
voltage_show(struct device * dev,struct device_attribute * attr,char * buf)327 static ssize_t voltage_show(struct device *dev, struct device_attribute *attr,
328 char *buf)
329 {
330 struct adt7475_data *data = adt7475_update_device(dev);
331 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
332 unsigned short val;
333
334 if (IS_ERR(data))
335 return PTR_ERR(data);
336
337 switch (sattr->nr) {
338 case ALARM:
339 return sprintf(buf, "%d\n",
340 (data->alarms >> sattr->index) & 1);
341 default:
342 val = data->voltage[sattr->nr][sattr->index];
343 return sprintf(buf, "%d\n",
344 reg2volt(sattr->index, val, data->bypass_attn));
345 }
346 }
347
voltage_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)348 static ssize_t voltage_store(struct device *dev,
349 struct device_attribute *attr, const char *buf,
350 size_t count)
351 {
352
353 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
354 struct adt7475_data *data = dev_get_drvdata(dev);
355 struct i2c_client *client = data->client;
356 unsigned char reg;
357 long val;
358
359 if (kstrtol(buf, 10, &val))
360 return -EINVAL;
361
362 mutex_lock(&data->lock);
363
364 data->voltage[sattr->nr][sattr->index] =
365 volt2reg(sattr->index, val, data->bypass_attn);
366
367 if (sattr->index < ADT7475_VOLTAGE_COUNT) {
368 if (sattr->nr == MIN)
369 reg = VOLTAGE_MIN_REG(sattr->index);
370 else
371 reg = VOLTAGE_MAX_REG(sattr->index);
372 } else {
373 if (sattr->nr == MIN)
374 reg = REG_VTT_MIN;
375 else
376 reg = REG_VTT_MAX;
377 }
378
379 i2c_smbus_write_byte_data(client, reg,
380 data->voltage[sattr->nr][sattr->index] >> 2);
381 mutex_unlock(&data->lock);
382
383 return count;
384 }
385
temp_show(struct device * dev,struct device_attribute * attr,char * buf)386 static ssize_t temp_show(struct device *dev, struct device_attribute *attr,
387 char *buf)
388 {
389 struct adt7475_data *data = adt7475_update_device(dev);
390 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
391 int out;
392
393 if (IS_ERR(data))
394 return PTR_ERR(data);
395
396 switch (sattr->nr) {
397 case HYSTERSIS:
398 mutex_lock(&data->lock);
399 out = data->temp[sattr->nr][sattr->index];
400 if (sattr->index != 1)
401 out = (out >> 4) & 0xF;
402 else
403 out = (out & 0xF);
404 /*
405 * Show the value as an absolute number tied to
406 * THERM
407 */
408 out = reg2temp(data, data->temp[THERM][sattr->index]) -
409 out * 1000;
410 mutex_unlock(&data->lock);
411 break;
412
413 case OFFSET:
414 /*
415 * Offset is always 2's complement, regardless of the
416 * setting in CONFIG5
417 */
418 mutex_lock(&data->lock);
419 out = (s8)data->temp[sattr->nr][sattr->index];
420 if (data->config5 & CONFIG5_TEMPOFFSET)
421 out *= 1000;
422 else
423 out *= 500;
424 mutex_unlock(&data->lock);
425 break;
426
427 case ALARM:
428 out = (data->alarms >> (sattr->index + 4)) & 1;
429 break;
430
431 case FAULT:
432 /* Note - only for remote1 and remote2 */
433 out = !!(data->alarms & (sattr->index ? 0x8000 : 0x4000));
434 break;
435
436 default:
437 /* All other temp values are in the configured format */
438 out = reg2temp(data, data->temp[sattr->nr][sattr->index]);
439 }
440
441 return sprintf(buf, "%d\n", out);
442 }
443
temp_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)444 static ssize_t temp_store(struct device *dev, struct device_attribute *attr,
445 const char *buf, size_t count)
446 {
447 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
448 struct adt7475_data *data = dev_get_drvdata(dev);
449 struct i2c_client *client = data->client;
450 unsigned char reg = 0;
451 u8 out;
452 int temp;
453 long val;
454
455 if (kstrtol(buf, 10, &val))
456 return -EINVAL;
457
458 mutex_lock(&data->lock);
459
460 /* We need the config register in all cases for temp <-> reg conv. */
461 data->config5 = adt7475_read(REG_CONFIG5);
462
463 switch (sattr->nr) {
464 case OFFSET:
465 if (data->config5 & CONFIG5_TEMPOFFSET) {
466 val = clamp_val(val, -63000, 127000);
467 out = data->temp[OFFSET][sattr->index] = val / 1000;
468 } else {
469 val = clamp_val(val, -63000, 64000);
470 out = data->temp[OFFSET][sattr->index] = val / 500;
471 }
472 break;
473
474 case HYSTERSIS:
475 /*
476 * The value will be given as an absolute value, turn it
477 * into an offset based on THERM
478 */
479
480 /* Read fresh THERM and HYSTERSIS values from the chip */
481 data->temp[THERM][sattr->index] =
482 adt7475_read(TEMP_THERM_REG(sattr->index)) << 2;
483 adt7475_read_hystersis(client);
484
485 temp = reg2temp(data, data->temp[THERM][sattr->index]);
486 val = clamp_val(val, temp - 15000, temp);
487 val = (temp - val) / 1000;
488
489 if (sattr->index != 1) {
490 data->temp[HYSTERSIS][sattr->index] &= 0x0F;
491 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF) << 4;
492 } else {
493 data->temp[HYSTERSIS][sattr->index] &= 0xF0;
494 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF);
495 }
496
497 out = data->temp[HYSTERSIS][sattr->index];
498 break;
499
500 default:
501 data->temp[sattr->nr][sattr->index] = temp2reg(data, val);
502
503 /*
504 * We maintain an extra 2 digits of precision for simplicity
505 * - shift those back off before writing the value
506 */
507 out = (u8) (data->temp[sattr->nr][sattr->index] >> 2);
508 }
509
510 switch (sattr->nr) {
511 case MIN:
512 reg = TEMP_MIN_REG(sattr->index);
513 break;
514 case MAX:
515 reg = TEMP_MAX_REG(sattr->index);
516 break;
517 case OFFSET:
518 reg = TEMP_OFFSET_REG(sattr->index);
519 break;
520 case AUTOMIN:
521 reg = TEMP_TMIN_REG(sattr->index);
522 break;
523 case THERM:
524 reg = TEMP_THERM_REG(sattr->index);
525 break;
526 case HYSTERSIS:
527 if (sattr->index != 2)
528 reg = REG_REMOTE1_HYSTERSIS;
529 else
530 reg = REG_REMOTE2_HYSTERSIS;
531
532 break;
533 }
534
535 i2c_smbus_write_byte_data(client, reg, out);
536
537 mutex_unlock(&data->lock);
538 return count;
539 }
540
541 /* Assuming CONFIG6[SLOW] is 0 */
542 static const int ad7475_st_map[] = {
543 37500, 18800, 12500, 7500, 4700, 3100, 1600, 800,
544 };
545
temp_st_show(struct device * dev,struct device_attribute * attr,char * buf)546 static ssize_t temp_st_show(struct device *dev, struct device_attribute *attr,
547 char *buf)
548 {
549 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
550 struct adt7475_data *data = dev_get_drvdata(dev);
551 long val;
552
553 switch (sattr->index) {
554 case 0:
555 val = data->enh_acoustics[0] & 0xf;
556 break;
557 case 1:
558 val = data->enh_acoustics[1] & 0xf;
559 break;
560 case 2:
561 default:
562 val = (data->enh_acoustics[1] >> 4) & 0xf;
563 break;
564 }
565
566 if (val & 0x8)
567 return sprintf(buf, "%d\n", ad7475_st_map[val & 0x7]);
568 else
569 return sprintf(buf, "0\n");
570 }
571
temp_st_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)572 static ssize_t temp_st_store(struct device *dev,
573 struct device_attribute *attr, const char *buf,
574 size_t count)
575 {
576 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
577 struct adt7475_data *data = dev_get_drvdata(dev);
578 struct i2c_client *client = data->client;
579 unsigned char reg;
580 int shift, idx;
581 ulong val;
582
583 if (kstrtoul(buf, 10, &val))
584 return -EINVAL;
585
586 switch (sattr->index) {
587 case 0:
588 reg = REG_ENHANCE_ACOUSTICS1;
589 shift = 0;
590 idx = 0;
591 break;
592 case 1:
593 reg = REG_ENHANCE_ACOUSTICS2;
594 shift = 0;
595 idx = 1;
596 break;
597 case 2:
598 default:
599 reg = REG_ENHANCE_ACOUSTICS2;
600 shift = 4;
601 idx = 1;
602 break;
603 }
604
605 if (val > 0) {
606 val = find_closest_descending(val, ad7475_st_map,
607 ARRAY_SIZE(ad7475_st_map));
608 val |= 0x8;
609 }
610
611 mutex_lock(&data->lock);
612
613 data->enh_acoustics[idx] &= ~(0xf << shift);
614 data->enh_acoustics[idx] |= (val << shift);
615
616 i2c_smbus_write_byte_data(client, reg, data->enh_acoustics[idx]);
617
618 mutex_unlock(&data->lock);
619
620 return count;
621 }
622
623 /*
624 * Table of autorange values - the user will write the value in millidegrees,
625 * and we'll convert it
626 */
627 static const int autorange_table[] = {
628 2000, 2500, 3330, 4000, 5000, 6670, 8000,
629 10000, 13330, 16000, 20000, 26670, 32000, 40000,
630 53330, 80000
631 };
632
point2_show(struct device * dev,struct device_attribute * attr,char * buf)633 static ssize_t point2_show(struct device *dev, struct device_attribute *attr,
634 char *buf)
635 {
636 struct adt7475_data *data = adt7475_update_device(dev);
637 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
638 int out, val;
639
640 if (IS_ERR(data))
641 return PTR_ERR(data);
642
643 mutex_lock(&data->lock);
644 out = (data->range[sattr->index] >> 4) & 0x0F;
645 val = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
646 mutex_unlock(&data->lock);
647
648 return sprintf(buf, "%d\n", val + autorange_table[out]);
649 }
650
point2_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)651 static ssize_t point2_store(struct device *dev, struct device_attribute *attr,
652 const char *buf, size_t count)
653 {
654 struct adt7475_data *data = dev_get_drvdata(dev);
655 struct i2c_client *client = data->client;
656 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
657 int temp;
658 long val;
659
660 if (kstrtol(buf, 10, &val))
661 return -EINVAL;
662
663 mutex_lock(&data->lock);
664
665 /* Get a fresh copy of the needed registers */
666 data->config5 = adt7475_read(REG_CONFIG5);
667 data->temp[AUTOMIN][sattr->index] =
668 adt7475_read(TEMP_TMIN_REG(sattr->index)) << 2;
669 data->range[sattr->index] =
670 adt7475_read(TEMP_TRANGE_REG(sattr->index));
671
672 /*
673 * The user will write an absolute value, so subtract the start point
674 * to figure the range
675 */
676 temp = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
677 val = clamp_val(val, temp + autorange_table[0],
678 temp + autorange_table[ARRAY_SIZE(autorange_table) - 1]);
679 val -= temp;
680
681 /* Find the nearest table entry to what the user wrote */
682 val = find_closest(val, autorange_table, ARRAY_SIZE(autorange_table));
683
684 data->range[sattr->index] &= ~0xF0;
685 data->range[sattr->index] |= val << 4;
686
687 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
688 data->range[sattr->index]);
689
690 mutex_unlock(&data->lock);
691 return count;
692 }
693
tach_show(struct device * dev,struct device_attribute * attr,char * buf)694 static ssize_t tach_show(struct device *dev, struct device_attribute *attr,
695 char *buf)
696 {
697 struct adt7475_data *data = adt7475_update_device(dev);
698 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
699 int out;
700
701 if (IS_ERR(data))
702 return PTR_ERR(data);
703
704 if (sattr->nr == ALARM)
705 out = (data->alarms >> (sattr->index + 10)) & 1;
706 else
707 out = tach2rpm(data->tach[sattr->nr][sattr->index]);
708
709 return sprintf(buf, "%d\n", out);
710 }
711
tach_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)712 static ssize_t tach_store(struct device *dev, struct device_attribute *attr,
713 const char *buf, size_t count)
714 {
715
716 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
717 struct adt7475_data *data = dev_get_drvdata(dev);
718 struct i2c_client *client = data->client;
719 unsigned long val;
720
721 if (kstrtoul(buf, 10, &val))
722 return -EINVAL;
723
724 mutex_lock(&data->lock);
725
726 data->tach[MIN][sattr->index] = rpm2tach(val);
727
728 adt7475_write_word(client, TACH_MIN_REG(sattr->index),
729 data->tach[MIN][sattr->index]);
730
731 mutex_unlock(&data->lock);
732 return count;
733 }
734
pwm_show(struct device * dev,struct device_attribute * attr,char * buf)735 static ssize_t pwm_show(struct device *dev, struct device_attribute *attr,
736 char *buf)
737 {
738 struct adt7475_data *data = adt7475_update_device(dev);
739 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
740
741 if (IS_ERR(data))
742 return PTR_ERR(data);
743
744 return sprintf(buf, "%d\n", data->pwm[sattr->nr][sattr->index]);
745 }
746
pwmchan_show(struct device * dev,struct device_attribute * attr,char * buf)747 static ssize_t pwmchan_show(struct device *dev, struct device_attribute *attr,
748 char *buf)
749 {
750 struct adt7475_data *data = adt7475_update_device(dev);
751 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
752
753 if (IS_ERR(data))
754 return PTR_ERR(data);
755
756 return sprintf(buf, "%d\n", data->pwmchan[sattr->index]);
757 }
758
pwmctrl_show(struct device * dev,struct device_attribute * attr,char * buf)759 static ssize_t pwmctrl_show(struct device *dev, struct device_attribute *attr,
760 char *buf)
761 {
762 struct adt7475_data *data = adt7475_update_device(dev);
763 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
764
765 if (IS_ERR(data))
766 return PTR_ERR(data);
767
768 return sprintf(buf, "%d\n", data->pwmctl[sattr->index]);
769 }
770
pwm_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)771 static ssize_t pwm_store(struct device *dev, struct device_attribute *attr,
772 const char *buf, size_t count)
773 {
774
775 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
776 struct adt7475_data *data = dev_get_drvdata(dev);
777 struct i2c_client *client = data->client;
778 unsigned char reg = 0;
779 long val;
780
781 if (kstrtol(buf, 10, &val))
782 return -EINVAL;
783
784 mutex_lock(&data->lock);
785
786 switch (sattr->nr) {
787 case INPUT:
788 /* Get a fresh value for CONTROL */
789 data->pwm[CONTROL][sattr->index] =
790 adt7475_read(PWM_CONFIG_REG(sattr->index));
791
792 /*
793 * If we are not in manual mode, then we shouldn't allow
794 * the user to set the pwm speed
795 */
796 if (((data->pwm[CONTROL][sattr->index] >> 5) & 7) != 7) {
797 mutex_unlock(&data->lock);
798 return count;
799 }
800
801 reg = PWM_REG(sattr->index);
802 break;
803
804 case MIN:
805 reg = PWM_MIN_REG(sattr->index);
806 break;
807
808 case MAX:
809 reg = PWM_MAX_REG(sattr->index);
810 break;
811 }
812
813 data->pwm[sattr->nr][sattr->index] = clamp_val(val, 0, 0xFF);
814 i2c_smbus_write_byte_data(client, reg,
815 data->pwm[sattr->nr][sattr->index]);
816 mutex_unlock(&data->lock);
817
818 return count;
819 }
820
stall_disable_show(struct device * dev,struct device_attribute * attr,char * buf)821 static ssize_t stall_disable_show(struct device *dev,
822 struct device_attribute *attr, char *buf)
823 {
824 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
825 struct adt7475_data *data = dev_get_drvdata(dev);
826
827 u8 mask = BIT(5 + sattr->index);
828
829 return sprintf(buf, "%d\n", !!(data->enh_acoustics[0] & mask));
830 }
831
stall_disable_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)832 static ssize_t stall_disable_store(struct device *dev,
833 struct device_attribute *attr,
834 const char *buf, size_t count)
835 {
836 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
837 struct adt7475_data *data = dev_get_drvdata(dev);
838 struct i2c_client *client = data->client;
839 long val;
840 u8 mask = BIT(5 + sattr->index);
841
842 if (kstrtol(buf, 10, &val))
843 return -EINVAL;
844
845 mutex_lock(&data->lock);
846
847 data->enh_acoustics[0] &= ~mask;
848 if (val)
849 data->enh_acoustics[0] |= mask;
850
851 i2c_smbus_write_byte_data(client, REG_ENHANCE_ACOUSTICS1,
852 data->enh_acoustics[0]);
853
854 mutex_unlock(&data->lock);
855
856 return count;
857 }
858
859 /* Called by set_pwmctrl and set_pwmchan */
860
hw_set_pwm(struct i2c_client * client,int index,unsigned int pwmctl,unsigned int pwmchan)861 static int hw_set_pwm(struct i2c_client *client, int index,
862 unsigned int pwmctl, unsigned int pwmchan)
863 {
864 struct adt7475_data *data = i2c_get_clientdata(client);
865 long val = 0;
866
867 switch (pwmctl) {
868 case 0:
869 val = 0x03; /* Run at full speed */
870 break;
871 case 1:
872 val = 0x07; /* Manual mode */
873 break;
874 case 2:
875 switch (pwmchan) {
876 case 1:
877 /* Remote1 controls PWM */
878 val = 0x00;
879 break;
880 case 2:
881 /* local controls PWM */
882 val = 0x01;
883 break;
884 case 4:
885 /* remote2 controls PWM */
886 val = 0x02;
887 break;
888 case 6:
889 /* local/remote2 control PWM */
890 val = 0x05;
891 break;
892 case 7:
893 /* All three control PWM */
894 val = 0x06;
895 break;
896 default:
897 return -EINVAL;
898 }
899 break;
900 default:
901 return -EINVAL;
902 }
903
904 data->pwmctl[index] = pwmctl;
905 data->pwmchan[index] = pwmchan;
906
907 data->pwm[CONTROL][index] &= ~0xE0;
908 data->pwm[CONTROL][index] |= (val & 7) << 5;
909
910 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
911 data->pwm[CONTROL][index]);
912
913 return 0;
914 }
915
pwmchan_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)916 static ssize_t pwmchan_store(struct device *dev,
917 struct device_attribute *attr, const char *buf,
918 size_t count)
919 {
920 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
921 struct adt7475_data *data = dev_get_drvdata(dev);
922 struct i2c_client *client = data->client;
923 int r;
924 long val;
925
926 if (kstrtol(buf, 10, &val))
927 return -EINVAL;
928
929 mutex_lock(&data->lock);
930 /* Read Modify Write PWM values */
931 adt7475_read_pwm(client, sattr->index);
932 r = hw_set_pwm(client, sattr->index, data->pwmctl[sattr->index], val);
933 if (r)
934 count = r;
935 mutex_unlock(&data->lock);
936
937 return count;
938 }
939
pwmctrl_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)940 static ssize_t pwmctrl_store(struct device *dev,
941 struct device_attribute *attr, const char *buf,
942 size_t count)
943 {
944 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
945 struct adt7475_data *data = dev_get_drvdata(dev);
946 struct i2c_client *client = data->client;
947 int r;
948 long val;
949
950 if (kstrtol(buf, 10, &val))
951 return -EINVAL;
952
953 mutex_lock(&data->lock);
954 /* Read Modify Write PWM values */
955 adt7475_read_pwm(client, sattr->index);
956 r = hw_set_pwm(client, sattr->index, val, data->pwmchan[sattr->index]);
957 if (r)
958 count = r;
959 mutex_unlock(&data->lock);
960
961 return count;
962 }
963
964 /* List of frequencies for the PWM */
965 static const int pwmfreq_table[] = {
966 11, 14, 22, 29, 35, 44, 58, 88, 22500
967 };
968
pwmfreq_show(struct device * dev,struct device_attribute * attr,char * buf)969 static ssize_t pwmfreq_show(struct device *dev, struct device_attribute *attr,
970 char *buf)
971 {
972 struct adt7475_data *data = adt7475_update_device(dev);
973 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
974 int idx;
975
976 if (IS_ERR(data))
977 return PTR_ERR(data);
978 idx = clamp_val(data->range[sattr->index] & 0xf, 0,
979 ARRAY_SIZE(pwmfreq_table) - 1);
980
981 return sprintf(buf, "%d\n", pwmfreq_table[idx]);
982 }
983
pwmfreq_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)984 static ssize_t pwmfreq_store(struct device *dev,
985 struct device_attribute *attr, const char *buf,
986 size_t count)
987 {
988 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
989 struct adt7475_data *data = dev_get_drvdata(dev);
990 struct i2c_client *client = data->client;
991 int out;
992 long val;
993
994 if (kstrtol(buf, 10, &val))
995 return -EINVAL;
996
997 out = find_closest(val, pwmfreq_table, ARRAY_SIZE(pwmfreq_table));
998
999 mutex_lock(&data->lock);
1000
1001 data->range[sattr->index] =
1002 adt7475_read(TEMP_TRANGE_REG(sattr->index));
1003 data->range[sattr->index] &= ~0xf;
1004 data->range[sattr->index] |= out;
1005
1006 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
1007 data->range[sattr->index]);
1008
1009 mutex_unlock(&data->lock);
1010 return count;
1011 }
1012
pwm_use_point2_pwm_at_crit_show(struct device * dev,struct device_attribute * devattr,char * buf)1013 static ssize_t pwm_use_point2_pwm_at_crit_show(struct device *dev,
1014 struct device_attribute *devattr,
1015 char *buf)
1016 {
1017 struct adt7475_data *data = adt7475_update_device(dev);
1018
1019 if (IS_ERR(data))
1020 return PTR_ERR(data);
1021
1022 return sprintf(buf, "%d\n", !!(data->config4 & CONFIG4_MAXDUTY));
1023 }
1024
pwm_use_point2_pwm_at_crit_store(struct device * dev,struct device_attribute * devattr,const char * buf,size_t count)1025 static ssize_t pwm_use_point2_pwm_at_crit_store(struct device *dev,
1026 struct device_attribute *devattr,
1027 const char *buf, size_t count)
1028 {
1029 struct adt7475_data *data = dev_get_drvdata(dev);
1030 struct i2c_client *client = data->client;
1031 long val;
1032
1033 if (kstrtol(buf, 10, &val))
1034 return -EINVAL;
1035 if (val != 0 && val != 1)
1036 return -EINVAL;
1037
1038 mutex_lock(&data->lock);
1039 data->config4 = i2c_smbus_read_byte_data(client, REG_CONFIG4);
1040 if (val)
1041 data->config4 |= CONFIG4_MAXDUTY;
1042 else
1043 data->config4 &= ~CONFIG4_MAXDUTY;
1044 i2c_smbus_write_byte_data(client, REG_CONFIG4, data->config4);
1045 mutex_unlock(&data->lock);
1046
1047 return count;
1048 }
1049
vrm_show(struct device * dev,struct device_attribute * devattr,char * buf)1050 static ssize_t vrm_show(struct device *dev, struct device_attribute *devattr,
1051 char *buf)
1052 {
1053 struct adt7475_data *data = dev_get_drvdata(dev);
1054 return sprintf(buf, "%d\n", (int)data->vrm);
1055 }
1056
vrm_store(struct device * dev,struct device_attribute * devattr,const char * buf,size_t count)1057 static ssize_t vrm_store(struct device *dev, struct device_attribute *devattr,
1058 const char *buf, size_t count)
1059 {
1060 struct adt7475_data *data = dev_get_drvdata(dev);
1061 long val;
1062
1063 if (kstrtol(buf, 10, &val))
1064 return -EINVAL;
1065 if (val < 0 || val > 255)
1066 return -EINVAL;
1067 data->vrm = val;
1068
1069 return count;
1070 }
1071
cpu0_vid_show(struct device * dev,struct device_attribute * devattr,char * buf)1072 static ssize_t cpu0_vid_show(struct device *dev,
1073 struct device_attribute *devattr, char *buf)
1074 {
1075 struct adt7475_data *data = adt7475_update_device(dev);
1076
1077 if (IS_ERR(data))
1078 return PTR_ERR(data);
1079
1080 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
1081 }
1082
1083 static SENSOR_DEVICE_ATTR_2_RO(in0_input, voltage, INPUT, 0);
1084 static SENSOR_DEVICE_ATTR_2_RW(in0_max, voltage, MAX, 0);
1085 static SENSOR_DEVICE_ATTR_2_RW(in0_min, voltage, MIN, 0);
1086 static SENSOR_DEVICE_ATTR_2_RO(in0_alarm, voltage, ALARM, 0);
1087 static SENSOR_DEVICE_ATTR_2_RO(in1_input, voltage, INPUT, 1);
1088 static SENSOR_DEVICE_ATTR_2_RW(in1_max, voltage, MAX, 1);
1089 static SENSOR_DEVICE_ATTR_2_RW(in1_min, voltage, MIN, 1);
1090 static SENSOR_DEVICE_ATTR_2_RO(in1_alarm, voltage, ALARM, 1);
1091 static SENSOR_DEVICE_ATTR_2_RO(in2_input, voltage, INPUT, 2);
1092 static SENSOR_DEVICE_ATTR_2_RW(in2_max, voltage, MAX, 2);
1093 static SENSOR_DEVICE_ATTR_2_RW(in2_min, voltage, MIN, 2);
1094 static SENSOR_DEVICE_ATTR_2_RO(in2_alarm, voltage, ALARM, 2);
1095 static SENSOR_DEVICE_ATTR_2_RO(in3_input, voltage, INPUT, 3);
1096 static SENSOR_DEVICE_ATTR_2_RW(in3_max, voltage, MAX, 3);
1097 static SENSOR_DEVICE_ATTR_2_RW(in3_min, voltage, MIN, 3);
1098 static SENSOR_DEVICE_ATTR_2_RO(in3_alarm, voltage, ALARM, 3);
1099 static SENSOR_DEVICE_ATTR_2_RO(in4_input, voltage, INPUT, 4);
1100 static SENSOR_DEVICE_ATTR_2_RW(in4_max, voltage, MAX, 4);
1101 static SENSOR_DEVICE_ATTR_2_RW(in4_min, voltage, MIN, 4);
1102 static SENSOR_DEVICE_ATTR_2_RO(in4_alarm, voltage, ALARM, 8);
1103 static SENSOR_DEVICE_ATTR_2_RO(in5_input, voltage, INPUT, 5);
1104 static SENSOR_DEVICE_ATTR_2_RW(in5_max, voltage, MAX, 5);
1105 static SENSOR_DEVICE_ATTR_2_RW(in5_min, voltage, MIN, 5);
1106 static SENSOR_DEVICE_ATTR_2_RO(in5_alarm, voltage, ALARM, 31);
1107 static SENSOR_DEVICE_ATTR_2_RO(temp1_input, temp, INPUT, 0);
1108 static SENSOR_DEVICE_ATTR_2_RO(temp1_alarm, temp, ALARM, 0);
1109 static SENSOR_DEVICE_ATTR_2_RO(temp1_fault, temp, FAULT, 0);
1110 static SENSOR_DEVICE_ATTR_2_RW(temp1_max, temp, MAX, 0);
1111 static SENSOR_DEVICE_ATTR_2_RW(temp1_min, temp, MIN, 0);
1112 static SENSOR_DEVICE_ATTR_2_RW(temp1_offset, temp, OFFSET, 0);
1113 static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_point1_temp, temp, AUTOMIN, 0);
1114 static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_point2_temp, point2, 0, 0);
1115 static SENSOR_DEVICE_ATTR_2_RW(temp1_crit, temp, THERM, 0);
1116 static SENSOR_DEVICE_ATTR_2_RW(temp1_crit_hyst, temp, HYSTERSIS, 0);
1117 static SENSOR_DEVICE_ATTR_2_RW(temp1_smoothing, temp_st, 0, 0);
1118 static SENSOR_DEVICE_ATTR_2_RO(temp2_input, temp, INPUT, 1);
1119 static SENSOR_DEVICE_ATTR_2_RO(temp2_alarm, temp, ALARM, 1);
1120 static SENSOR_DEVICE_ATTR_2_RW(temp2_max, temp, MAX, 1);
1121 static SENSOR_DEVICE_ATTR_2_RW(temp2_min, temp, MIN, 1);
1122 static SENSOR_DEVICE_ATTR_2_RW(temp2_offset, temp, OFFSET, 1);
1123 static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_point1_temp, temp, AUTOMIN, 1);
1124 static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_point2_temp, point2, 0, 1);
1125 static SENSOR_DEVICE_ATTR_2_RW(temp2_crit, temp, THERM, 1);
1126 static SENSOR_DEVICE_ATTR_2_RW(temp2_crit_hyst, temp, HYSTERSIS, 1);
1127 static SENSOR_DEVICE_ATTR_2_RW(temp2_smoothing, temp_st, 0, 1);
1128 static SENSOR_DEVICE_ATTR_2_RO(temp3_input, temp, INPUT, 2);
1129 static SENSOR_DEVICE_ATTR_2_RO(temp3_alarm, temp, ALARM, 2);
1130 static SENSOR_DEVICE_ATTR_2_RO(temp3_fault, temp, FAULT, 2);
1131 static SENSOR_DEVICE_ATTR_2_RW(temp3_max, temp, MAX, 2);
1132 static SENSOR_DEVICE_ATTR_2_RW(temp3_min, temp, MIN, 2);
1133 static SENSOR_DEVICE_ATTR_2_RW(temp3_offset, temp, OFFSET, 2);
1134 static SENSOR_DEVICE_ATTR_2_RW(temp3_auto_point1_temp, temp, AUTOMIN, 2);
1135 static SENSOR_DEVICE_ATTR_2_RW(temp3_auto_point2_temp, point2, 0, 2);
1136 static SENSOR_DEVICE_ATTR_2_RW(temp3_crit, temp, THERM, 2);
1137 static SENSOR_DEVICE_ATTR_2_RW(temp3_crit_hyst, temp, HYSTERSIS, 2);
1138 static SENSOR_DEVICE_ATTR_2_RW(temp3_smoothing, temp_st, 0, 2);
1139 static SENSOR_DEVICE_ATTR_2_RO(fan1_input, tach, INPUT, 0);
1140 static SENSOR_DEVICE_ATTR_2_RW(fan1_min, tach, MIN, 0);
1141 static SENSOR_DEVICE_ATTR_2_RO(fan1_alarm, tach, ALARM, 0);
1142 static SENSOR_DEVICE_ATTR_2_RO(fan2_input, tach, INPUT, 1);
1143 static SENSOR_DEVICE_ATTR_2_RW(fan2_min, tach, MIN, 1);
1144 static SENSOR_DEVICE_ATTR_2_RO(fan2_alarm, tach, ALARM, 1);
1145 static SENSOR_DEVICE_ATTR_2_RO(fan3_input, tach, INPUT, 2);
1146 static SENSOR_DEVICE_ATTR_2_RW(fan3_min, tach, MIN, 2);
1147 static SENSOR_DEVICE_ATTR_2_RO(fan3_alarm, tach, ALARM, 2);
1148 static SENSOR_DEVICE_ATTR_2_RO(fan4_input, tach, INPUT, 3);
1149 static SENSOR_DEVICE_ATTR_2_RW(fan4_min, tach, MIN, 3);
1150 static SENSOR_DEVICE_ATTR_2_RO(fan4_alarm, tach, ALARM, 3);
1151 static SENSOR_DEVICE_ATTR_2_RW(pwm1, pwm, INPUT, 0);
1152 static SENSOR_DEVICE_ATTR_2_RW(pwm1_freq, pwmfreq, INPUT, 0);
1153 static SENSOR_DEVICE_ATTR_2_RW(pwm1_enable, pwmctrl, INPUT, 0);
1154 static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_channels_temp, pwmchan, INPUT, 0);
1155 static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point1_pwm, pwm, MIN, 0);
1156 static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point2_pwm, pwm, MAX, 0);
1157 static SENSOR_DEVICE_ATTR_2_RW(pwm1_stall_disable, stall_disable, 0, 0);
1158 static SENSOR_DEVICE_ATTR_2_RW(pwm2, pwm, INPUT, 1);
1159 static SENSOR_DEVICE_ATTR_2_RW(pwm2_freq, pwmfreq, INPUT, 1);
1160 static SENSOR_DEVICE_ATTR_2_RW(pwm2_enable, pwmctrl, INPUT, 1);
1161 static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_channels_temp, pwmchan, INPUT, 1);
1162 static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point1_pwm, pwm, MIN, 1);
1163 static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point2_pwm, pwm, MAX, 1);
1164 static SENSOR_DEVICE_ATTR_2_RW(pwm2_stall_disable, stall_disable, 0, 1);
1165 static SENSOR_DEVICE_ATTR_2_RW(pwm3, pwm, INPUT, 2);
1166 static SENSOR_DEVICE_ATTR_2_RW(pwm3_freq, pwmfreq, INPUT, 2);
1167 static SENSOR_DEVICE_ATTR_2_RW(pwm3_enable, pwmctrl, INPUT, 2);
1168 static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_channels_temp, pwmchan, INPUT, 2);
1169 static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point1_pwm, pwm, MIN, 2);
1170 static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point2_pwm, pwm, MAX, 2);
1171 static SENSOR_DEVICE_ATTR_2_RW(pwm3_stall_disable, stall_disable, 0, 2);
1172
1173 /* Non-standard name, might need revisiting */
1174 static DEVICE_ATTR_RW(pwm_use_point2_pwm_at_crit);
1175
1176 static DEVICE_ATTR_RW(vrm);
1177 static DEVICE_ATTR_RO(cpu0_vid);
1178
1179 static struct attribute *adt7475_attrs[] = {
1180 &sensor_dev_attr_in1_input.dev_attr.attr,
1181 &sensor_dev_attr_in1_max.dev_attr.attr,
1182 &sensor_dev_attr_in1_min.dev_attr.attr,
1183 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1184 &sensor_dev_attr_in2_input.dev_attr.attr,
1185 &sensor_dev_attr_in2_max.dev_attr.attr,
1186 &sensor_dev_attr_in2_min.dev_attr.attr,
1187 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1188 &sensor_dev_attr_temp1_input.dev_attr.attr,
1189 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1190 &sensor_dev_attr_temp1_fault.dev_attr.attr,
1191 &sensor_dev_attr_temp1_max.dev_attr.attr,
1192 &sensor_dev_attr_temp1_min.dev_attr.attr,
1193 &sensor_dev_attr_temp1_offset.dev_attr.attr,
1194 &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr,
1195 &sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr,
1196 &sensor_dev_attr_temp1_crit.dev_attr.attr,
1197 &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
1198 &sensor_dev_attr_temp1_smoothing.dev_attr.attr,
1199 &sensor_dev_attr_temp2_input.dev_attr.attr,
1200 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1201 &sensor_dev_attr_temp2_max.dev_attr.attr,
1202 &sensor_dev_attr_temp2_min.dev_attr.attr,
1203 &sensor_dev_attr_temp2_offset.dev_attr.attr,
1204 &sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr,
1205 &sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr,
1206 &sensor_dev_attr_temp2_crit.dev_attr.attr,
1207 &sensor_dev_attr_temp2_crit_hyst.dev_attr.attr,
1208 &sensor_dev_attr_temp2_smoothing.dev_attr.attr,
1209 &sensor_dev_attr_temp3_input.dev_attr.attr,
1210 &sensor_dev_attr_temp3_fault.dev_attr.attr,
1211 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1212 &sensor_dev_attr_temp3_max.dev_attr.attr,
1213 &sensor_dev_attr_temp3_min.dev_attr.attr,
1214 &sensor_dev_attr_temp3_offset.dev_attr.attr,
1215 &sensor_dev_attr_temp3_auto_point1_temp.dev_attr.attr,
1216 &sensor_dev_attr_temp3_auto_point2_temp.dev_attr.attr,
1217 &sensor_dev_attr_temp3_crit.dev_attr.attr,
1218 &sensor_dev_attr_temp3_crit_hyst.dev_attr.attr,
1219 &sensor_dev_attr_temp3_smoothing.dev_attr.attr,
1220 &sensor_dev_attr_fan1_input.dev_attr.attr,
1221 &sensor_dev_attr_fan1_min.dev_attr.attr,
1222 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1223 &sensor_dev_attr_fan2_input.dev_attr.attr,
1224 &sensor_dev_attr_fan2_min.dev_attr.attr,
1225 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1226 &sensor_dev_attr_fan3_input.dev_attr.attr,
1227 &sensor_dev_attr_fan3_min.dev_attr.attr,
1228 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1229 &sensor_dev_attr_pwm1.dev_attr.attr,
1230 &sensor_dev_attr_pwm1_freq.dev_attr.attr,
1231 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1232 &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
1233 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1234 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1235 &sensor_dev_attr_pwm1_stall_disable.dev_attr.attr,
1236 &sensor_dev_attr_pwm3.dev_attr.attr,
1237 &sensor_dev_attr_pwm3_freq.dev_attr.attr,
1238 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1239 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
1240 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1241 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1242 &sensor_dev_attr_pwm3_stall_disable.dev_attr.attr,
1243 &dev_attr_pwm_use_point2_pwm_at_crit.attr,
1244 NULL,
1245 };
1246
1247 static struct attribute *fan4_attrs[] = {
1248 &sensor_dev_attr_fan4_input.dev_attr.attr,
1249 &sensor_dev_attr_fan4_min.dev_attr.attr,
1250 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1251 NULL
1252 };
1253
1254 static struct attribute *pwm2_attrs[] = {
1255 &sensor_dev_attr_pwm2.dev_attr.attr,
1256 &sensor_dev_attr_pwm2_freq.dev_attr.attr,
1257 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1258 &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
1259 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1260 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1261 &sensor_dev_attr_pwm2_stall_disable.dev_attr.attr,
1262 NULL
1263 };
1264
1265 static struct attribute *in0_attrs[] = {
1266 &sensor_dev_attr_in0_input.dev_attr.attr,
1267 &sensor_dev_attr_in0_max.dev_attr.attr,
1268 &sensor_dev_attr_in0_min.dev_attr.attr,
1269 &sensor_dev_attr_in0_alarm.dev_attr.attr,
1270 NULL
1271 };
1272
1273 static struct attribute *in3_attrs[] = {
1274 &sensor_dev_attr_in3_input.dev_attr.attr,
1275 &sensor_dev_attr_in3_max.dev_attr.attr,
1276 &sensor_dev_attr_in3_min.dev_attr.attr,
1277 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1278 NULL
1279 };
1280
1281 static struct attribute *in4_attrs[] = {
1282 &sensor_dev_attr_in4_input.dev_attr.attr,
1283 &sensor_dev_attr_in4_max.dev_attr.attr,
1284 &sensor_dev_attr_in4_min.dev_attr.attr,
1285 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1286 NULL
1287 };
1288
1289 static struct attribute *in5_attrs[] = {
1290 &sensor_dev_attr_in5_input.dev_attr.attr,
1291 &sensor_dev_attr_in5_max.dev_attr.attr,
1292 &sensor_dev_attr_in5_min.dev_attr.attr,
1293 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1294 NULL
1295 };
1296
1297 static struct attribute *vid_attrs[] = {
1298 &dev_attr_cpu0_vid.attr,
1299 &dev_attr_vrm.attr,
1300 NULL
1301 };
1302
1303 static const struct attribute_group adt7475_attr_group = { .attrs = adt7475_attrs };
1304 static const struct attribute_group fan4_attr_group = { .attrs = fan4_attrs };
1305 static const struct attribute_group pwm2_attr_group = { .attrs = pwm2_attrs };
1306 static const struct attribute_group in0_attr_group = { .attrs = in0_attrs };
1307 static const struct attribute_group in3_attr_group = { .attrs = in3_attrs };
1308 static const struct attribute_group in4_attr_group = { .attrs = in4_attrs };
1309 static const struct attribute_group in5_attr_group = { .attrs = in5_attrs };
1310 static const struct attribute_group vid_attr_group = { .attrs = vid_attrs };
1311
adt7475_detect(struct i2c_client * client,struct i2c_board_info * info)1312 static int adt7475_detect(struct i2c_client *client,
1313 struct i2c_board_info *info)
1314 {
1315 struct i2c_adapter *adapter = client->adapter;
1316 int vendid, devid, devid2;
1317 const char *name;
1318
1319 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1320 return -ENODEV;
1321
1322 vendid = adt7475_read(REG_VENDID);
1323 devid2 = adt7475_read(REG_DEVID2);
1324 if (vendid != 0x41 || /* Analog Devices */
1325 (devid2 & 0xf8) != 0x68)
1326 return -ENODEV;
1327
1328 devid = adt7475_read(REG_DEVID);
1329 if (devid == 0x73)
1330 name = "adt7473";
1331 else if (devid == 0x75 && client->addr == 0x2e)
1332 name = "adt7475";
1333 else if (devid == 0x76)
1334 name = "adt7476";
1335 else if ((devid2 & 0xfc) == 0x6c)
1336 name = "adt7490";
1337 else {
1338 dev_dbg(&adapter->dev,
1339 "Couldn't detect an ADT7473/75/76/90 part at "
1340 "0x%02x\n", (unsigned int)client->addr);
1341 return -ENODEV;
1342 }
1343
1344 strscpy(info->type, name, I2C_NAME_SIZE);
1345
1346 return 0;
1347 }
1348
adt7475_update_limits(struct i2c_client * client)1349 static int adt7475_update_limits(struct i2c_client *client)
1350 {
1351 struct adt7475_data *data = i2c_get_clientdata(client);
1352 int i;
1353 int ret;
1354
1355 ret = adt7475_read(REG_CONFIG4);
1356 if (ret < 0)
1357 return ret;
1358 data->config4 = ret;
1359
1360 ret = adt7475_read(REG_CONFIG5);
1361 if (ret < 0)
1362 return ret;
1363 data->config5 = ret;
1364
1365 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
1366 if (!(data->has_voltage & (1 << i)))
1367 continue;
1368 /* Adjust values so they match the input precision */
1369 ret = adt7475_read(VOLTAGE_MIN_REG(i));
1370 if (ret < 0)
1371 return ret;
1372 data->voltage[MIN][i] = ret << 2;
1373
1374 ret = adt7475_read(VOLTAGE_MAX_REG(i));
1375 if (ret < 0)
1376 return ret;
1377 data->voltage[MAX][i] = ret << 2;
1378 }
1379
1380 if (data->has_voltage & (1 << 5)) {
1381 ret = adt7475_read(REG_VTT_MIN);
1382 if (ret < 0)
1383 return ret;
1384 data->voltage[MIN][5] = ret << 2;
1385
1386 ret = adt7475_read(REG_VTT_MAX);
1387 if (ret < 0)
1388 return ret;
1389 data->voltage[MAX][5] = ret << 2;
1390 }
1391
1392 for (i = 0; i < ADT7475_TEMP_COUNT; i++) {
1393 /* Adjust values so they match the input precision */
1394 ret = adt7475_read(TEMP_MIN_REG(i));
1395 if (ret < 0)
1396 return ret;
1397 data->temp[MIN][i] = ret << 2;
1398
1399 ret = adt7475_read(TEMP_MAX_REG(i));
1400 if (ret < 0)
1401 return ret;
1402 data->temp[MAX][i] = ret << 2;
1403
1404 ret = adt7475_read(TEMP_TMIN_REG(i));
1405 if (ret < 0)
1406 return ret;
1407 data->temp[AUTOMIN][i] = ret << 2;
1408
1409 ret = adt7475_read(TEMP_THERM_REG(i));
1410 if (ret < 0)
1411 return ret;
1412 data->temp[THERM][i] = ret << 2;
1413
1414 ret = adt7475_read(TEMP_OFFSET_REG(i));
1415 if (ret < 0)
1416 return ret;
1417 data->temp[OFFSET][i] = ret;
1418 }
1419 adt7475_read_hystersis(client);
1420
1421 for (i = 0; i < ADT7475_TACH_COUNT; i++) {
1422 if (i == 3 && !data->has_fan4)
1423 continue;
1424 ret = adt7475_read_word(client, TACH_MIN_REG(i));
1425 if (ret < 0)
1426 return ret;
1427 data->tach[MIN][i] = ret;
1428 }
1429
1430 for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1431 if (i == 1 && !data->has_pwm2)
1432 continue;
1433 ret = adt7475_read(PWM_MAX_REG(i));
1434 if (ret < 0)
1435 return ret;
1436 data->pwm[MAX][i] = ret;
1437
1438 ret = adt7475_read(PWM_MIN_REG(i));
1439 if (ret < 0)
1440 return ret;
1441 data->pwm[MIN][i] = ret;
1442 /* Set the channel and control information */
1443 adt7475_read_pwm(client, i);
1444 }
1445
1446 ret = adt7475_read(TEMP_TRANGE_REG(0));
1447 if (ret < 0)
1448 return ret;
1449 data->range[0] = ret;
1450
1451 ret = adt7475_read(TEMP_TRANGE_REG(1));
1452 if (ret < 0)
1453 return ret;
1454 data->range[1] = ret;
1455
1456 ret = adt7475_read(TEMP_TRANGE_REG(2));
1457 if (ret < 0)
1458 return ret;
1459 data->range[2] = ret;
1460
1461 return 0;
1462 }
1463
load_config3(const struct i2c_client * client,const char * propname)1464 static int load_config3(const struct i2c_client *client, const char *propname)
1465 {
1466 const char *function;
1467 u8 config3;
1468 int ret;
1469
1470 ret = device_property_read_string(&client->dev, propname, &function);
1471 if (!ret) {
1472 ret = adt7475_read(REG_CONFIG3);
1473 if (ret < 0)
1474 return ret;
1475
1476 config3 = ret & ~CONFIG3_SMBALERT;
1477 if (!strcmp("pwm2", function))
1478 ;
1479 else if (!strcmp("smbalert#", function))
1480 config3 |= CONFIG3_SMBALERT;
1481 else
1482 return -EINVAL;
1483
1484 return i2c_smbus_write_byte_data(client, REG_CONFIG3, config3);
1485 }
1486
1487 return 0;
1488 }
1489
load_config4(const struct i2c_client * client,const char * propname)1490 static int load_config4(const struct i2c_client *client, const char *propname)
1491 {
1492 const char *function;
1493 u8 config4;
1494 int ret;
1495
1496 ret = device_property_read_string(&client->dev, propname, &function);
1497 if (!ret) {
1498 ret = adt7475_read(REG_CONFIG4);
1499 if (ret < 0)
1500 return ret;
1501
1502 config4 = ret & ~CONFIG4_PINFUNC;
1503
1504 if (!strcmp("tach4", function))
1505 ;
1506 else if (!strcmp("therm#", function))
1507 config4 |= CONFIG4_THERM;
1508 else if (!strcmp("smbalert#", function))
1509 config4 |= CONFIG4_SMBALERT;
1510 else if (!strcmp("gpio", function))
1511 config4 |= CONFIG4_PINFUNC;
1512 else
1513 return -EINVAL;
1514
1515 return i2c_smbus_write_byte_data(client, REG_CONFIG4, config4);
1516 }
1517
1518 return 0;
1519 }
1520
load_config(const struct i2c_client * client,enum chips chip)1521 static int load_config(const struct i2c_client *client, enum chips chip)
1522 {
1523 int err;
1524 const char *prop1, *prop2;
1525
1526 switch (chip) {
1527 case adt7473:
1528 case adt7475:
1529 prop1 = "adi,pin5-function";
1530 prop2 = "adi,pin9-function";
1531 break;
1532 case adt7476:
1533 case adt7490:
1534 prop1 = "adi,pin10-function";
1535 prop2 = "adi,pin14-function";
1536 break;
1537 }
1538
1539 err = load_config3(client, prop1);
1540 if (err) {
1541 dev_err(&client->dev, "failed to configure %s\n", prop1);
1542 return err;
1543 }
1544
1545 err = load_config4(client, prop2);
1546 if (err) {
1547 dev_err(&client->dev, "failed to configure %s\n", prop2);
1548 return err;
1549 }
1550
1551 return 0;
1552 }
1553
set_property_bit(const struct i2c_client * client,char * property,u8 * config,u8 bit_index)1554 static int set_property_bit(const struct i2c_client *client, char *property,
1555 u8 *config, u8 bit_index)
1556 {
1557 u32 prop_value = 0;
1558 int ret = device_property_read_u32(&client->dev, property,
1559 &prop_value);
1560
1561 if (!ret) {
1562 if (prop_value)
1563 *config |= (1 << bit_index);
1564 else
1565 *config &= ~(1 << bit_index);
1566 }
1567
1568 return ret;
1569 }
1570
load_attenuators(const struct i2c_client * client,enum chips chip,struct adt7475_data * data)1571 static int load_attenuators(const struct i2c_client *client, enum chips chip,
1572 struct adt7475_data *data)
1573 {
1574 switch (chip) {
1575 case adt7476:
1576 case adt7490:
1577 set_property_bit(client, "adi,bypass-attenuator-in0",
1578 &data->config4, 4);
1579 set_property_bit(client, "adi,bypass-attenuator-in1",
1580 &data->config4, 5);
1581 set_property_bit(client, "adi,bypass-attenuator-in3",
1582 &data->config4, 6);
1583 set_property_bit(client, "adi,bypass-attenuator-in4",
1584 &data->config4, 7);
1585
1586 return i2c_smbus_write_byte_data(client, REG_CONFIG4,
1587 data->config4);
1588 case adt7473:
1589 case adt7475:
1590 set_property_bit(client, "adi,bypass-attenuator-in1",
1591 &data->config2, 5);
1592
1593 return i2c_smbus_write_byte_data(client, REG_CONFIG2,
1594 data->config2);
1595 }
1596
1597 return 0;
1598 }
1599
adt7475_set_pwm_polarity(struct i2c_client * client)1600 static int adt7475_set_pwm_polarity(struct i2c_client *client)
1601 {
1602 u32 states[ADT7475_PWM_COUNT];
1603 int ret, i;
1604 u8 val;
1605
1606 ret = device_property_read_u32_array(&client->dev,
1607 "adi,pwm-active-state", states,
1608 ARRAY_SIZE(states));
1609 if (ret)
1610 return ret;
1611
1612 for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1613 ret = adt7475_read(PWM_CONFIG_REG(i));
1614 if (ret < 0)
1615 return ret;
1616 val = ret;
1617 if (states[i])
1618 val &= ~BIT(4);
1619 else
1620 val |= BIT(4);
1621
1622 ret = i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(i), val);
1623 if (ret)
1624 return ret;
1625 }
1626
1627 return 0;
1628 }
1629
adt7475_probe(struct i2c_client * client)1630 static int adt7475_probe(struct i2c_client *client)
1631 {
1632 enum chips chip;
1633 static const char * const names[] = {
1634 [adt7473] = "ADT7473",
1635 [adt7475] = "ADT7475",
1636 [adt7476] = "ADT7476",
1637 [adt7490] = "ADT7490",
1638 };
1639
1640 struct adt7475_data *data;
1641 struct device *hwmon_dev;
1642 int i, ret = 0, revision, group_num = 0;
1643 u8 config3;
1644 const struct i2c_device_id *id = i2c_match_id(adt7475_id, client);
1645
1646 data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
1647 if (data == NULL)
1648 return -ENOMEM;
1649
1650 mutex_init(&data->lock);
1651 data->client = client;
1652 i2c_set_clientdata(client, data);
1653
1654 if (client->dev.of_node)
1655 chip = (uintptr_t)of_device_get_match_data(&client->dev);
1656 else
1657 chip = id->driver_data;
1658
1659 /* Initialize device-specific values */
1660 switch (chip) {
1661 case adt7476:
1662 data->has_voltage = 0x0e; /* in1 to in3 */
1663 revision = adt7475_read(REG_DEVID2) & 0x07;
1664 break;
1665 case adt7490:
1666 data->has_voltage = 0x3e; /* in1 to in5 */
1667 revision = adt7475_read(REG_DEVID2) & 0x03;
1668 if (revision == 0x03)
1669 revision += adt7475_read(REG_DEVREV2);
1670 break;
1671 default:
1672 data->has_voltage = 0x06; /* in1, in2 */
1673 revision = adt7475_read(REG_DEVID2) & 0x07;
1674 }
1675
1676 ret = load_config(client, chip);
1677 if (ret)
1678 return ret;
1679
1680 config3 = adt7475_read(REG_CONFIG3);
1681 /* Pin PWM2 may alternatively be used for ALERT output */
1682 if (!(config3 & CONFIG3_SMBALERT))
1683 data->has_pwm2 = 1;
1684 /* Meaning of this bit is inverted for the ADT7473-1 */
1685 if (id->driver_data == adt7473 && revision >= 1)
1686 data->has_pwm2 = !data->has_pwm2;
1687
1688 data->config4 = adt7475_read(REG_CONFIG4);
1689 /* Pin TACH4 may alternatively be used for THERM */
1690 if ((data->config4 & CONFIG4_PINFUNC) == 0x0)
1691 data->has_fan4 = 1;
1692
1693 /*
1694 * THERM configuration is more complex on the ADT7476 and ADT7490,
1695 * because 2 different pins (TACH4 and +2.5 Vin) can be used for
1696 * this function
1697 */
1698 if (id->driver_data == adt7490) {
1699 if ((data->config4 & CONFIG4_PINFUNC) == 0x1 &&
1700 !(config3 & CONFIG3_THERM))
1701 data->has_fan4 = 1;
1702 }
1703 if (id->driver_data == adt7476 || id->driver_data == adt7490) {
1704 if (!(config3 & CONFIG3_THERM) ||
1705 (data->config4 & CONFIG4_PINFUNC) == 0x1)
1706 data->has_voltage |= (1 << 0); /* in0 */
1707 }
1708
1709 /*
1710 * On the ADT7476, the +12V input pin may instead be used as VID5,
1711 * and VID pins may alternatively be used as GPIO
1712 */
1713 if (id->driver_data == adt7476) {
1714 u8 vid = adt7475_read(REG_VID);
1715 if (!(vid & VID_VIDSEL))
1716 data->has_voltage |= (1 << 4); /* in4 */
1717
1718 data->has_vid = !(adt7475_read(REG_CONFIG5) & CONFIG5_VIDGPIO);
1719 }
1720
1721 /* Voltage attenuators can be bypassed, globally or individually */
1722 data->config2 = adt7475_read(REG_CONFIG2);
1723 ret = load_attenuators(client, chip, data);
1724 if (ret)
1725 dev_warn(&client->dev, "Error configuring attenuator bypass\n");
1726
1727 if (data->config2 & CONFIG2_ATTN) {
1728 data->bypass_attn = (0x3 << 3) | 0x3;
1729 } else {
1730 data->bypass_attn = ((data->config4 & CONFIG4_ATTN_IN10) >> 4) |
1731 ((data->config4 & CONFIG4_ATTN_IN43) >> 3);
1732 }
1733 data->bypass_attn &= data->has_voltage;
1734
1735 /*
1736 * Call adt7475_read_pwm for all pwm's as this will reprogram any
1737 * pwm's which are disabled to manual mode with 0% duty cycle
1738 */
1739 for (i = 0; i < ADT7475_PWM_COUNT; i++)
1740 adt7475_read_pwm(client, i);
1741
1742 ret = adt7475_set_pwm_polarity(client);
1743 if (ret && ret != -EINVAL)
1744 dev_warn(&client->dev, "Error configuring pwm polarity\n");
1745
1746 /* Start monitoring */
1747 switch (chip) {
1748 case adt7475:
1749 case adt7476:
1750 i2c_smbus_write_byte_data(client, REG_CONFIG1,
1751 adt7475_read(REG_CONFIG1) | 0x01);
1752 break;
1753 default:
1754 break;
1755 }
1756
1757 data->groups[group_num++] = &adt7475_attr_group;
1758
1759 /* Features that can be disabled individually */
1760 if (data->has_fan4) {
1761 data->groups[group_num++] = &fan4_attr_group;
1762 }
1763 if (data->has_pwm2) {
1764 data->groups[group_num++] = &pwm2_attr_group;
1765 }
1766 if (data->has_voltage & (1 << 0)) {
1767 data->groups[group_num++] = &in0_attr_group;
1768 }
1769 if (data->has_voltage & (1 << 3)) {
1770 data->groups[group_num++] = &in3_attr_group;
1771 }
1772 if (data->has_voltage & (1 << 4)) {
1773 data->groups[group_num++] = &in4_attr_group;
1774 }
1775 if (data->has_voltage & (1 << 5)) {
1776 data->groups[group_num++] = &in5_attr_group;
1777 }
1778 if (data->has_vid) {
1779 data->vrm = vid_which_vrm();
1780 data->groups[group_num] = &vid_attr_group;
1781 }
1782
1783 /* register device with all the acquired attributes */
1784 hwmon_dev = devm_hwmon_device_register_with_groups(&client->dev,
1785 client->name, data,
1786 data->groups);
1787
1788 if (IS_ERR(hwmon_dev)) {
1789 ret = PTR_ERR(hwmon_dev);
1790 return ret;
1791 }
1792
1793 dev_info(&client->dev, "%s device, revision %d\n",
1794 names[id->driver_data], revision);
1795 if ((data->has_voltage & 0x11) || data->has_fan4 || data->has_pwm2)
1796 dev_info(&client->dev, "Optional features:%s%s%s%s%s\n",
1797 (data->has_voltage & (1 << 0)) ? " in0" : "",
1798 (data->has_voltage & (1 << 4)) ? " in4" : "",
1799 data->has_fan4 ? " fan4" : "",
1800 data->has_pwm2 ? " pwm2" : "",
1801 data->has_vid ? " vid" : "");
1802 if (data->bypass_attn)
1803 dev_info(&client->dev, "Bypassing attenuators on:%s%s%s%s\n",
1804 (data->bypass_attn & (1 << 0)) ? " in0" : "",
1805 (data->bypass_attn & (1 << 1)) ? " in1" : "",
1806 (data->bypass_attn & (1 << 3)) ? " in3" : "",
1807 (data->bypass_attn & (1 << 4)) ? " in4" : "");
1808
1809 /* Limits and settings, should never change update more than once */
1810 ret = adt7475_update_limits(client);
1811 if (ret)
1812 return ret;
1813
1814 return 0;
1815 }
1816
1817 static struct i2c_driver adt7475_driver = {
1818 .class = I2C_CLASS_HWMON,
1819 .driver = {
1820 .name = "adt7475",
1821 .of_match_table = of_match_ptr(adt7475_of_match),
1822 },
1823 .probe = adt7475_probe,
1824 .id_table = adt7475_id,
1825 .detect = adt7475_detect,
1826 .address_list = normal_i2c,
1827 };
1828
adt7475_read_hystersis(struct i2c_client * client)1829 static void adt7475_read_hystersis(struct i2c_client *client)
1830 {
1831 struct adt7475_data *data = i2c_get_clientdata(client);
1832
1833 data->temp[HYSTERSIS][0] = (u16) adt7475_read(REG_REMOTE1_HYSTERSIS);
1834 data->temp[HYSTERSIS][1] = data->temp[HYSTERSIS][0];
1835 data->temp[HYSTERSIS][2] = (u16) adt7475_read(REG_REMOTE2_HYSTERSIS);
1836 }
1837
adt7475_read_pwm(struct i2c_client * client,int index)1838 static void adt7475_read_pwm(struct i2c_client *client, int index)
1839 {
1840 struct adt7475_data *data = i2c_get_clientdata(client);
1841 unsigned int v;
1842
1843 data->pwm[CONTROL][index] = adt7475_read(PWM_CONFIG_REG(index));
1844
1845 /*
1846 * Figure out the internal value for pwmctrl and pwmchan
1847 * based on the current settings
1848 */
1849 v = (data->pwm[CONTROL][index] >> 5) & 7;
1850
1851 if (v == 3)
1852 data->pwmctl[index] = 0;
1853 else if (v == 7)
1854 data->pwmctl[index] = 1;
1855 else if (v == 4) {
1856 /*
1857 * The fan is disabled - we don't want to
1858 * support that, so change to manual mode and
1859 * set the duty cycle to 0 instead
1860 */
1861 data->pwm[INPUT][index] = 0;
1862 data->pwm[CONTROL][index] &= ~0xE0;
1863 data->pwm[CONTROL][index] |= (7 << 5);
1864
1865 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
1866 data->pwm[INPUT][index]);
1867
1868 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
1869 data->pwm[CONTROL][index]);
1870
1871 data->pwmctl[index] = 1;
1872 } else {
1873 data->pwmctl[index] = 2;
1874
1875 switch (v) {
1876 case 0:
1877 data->pwmchan[index] = 1;
1878 break;
1879 case 1:
1880 data->pwmchan[index] = 2;
1881 break;
1882 case 2:
1883 data->pwmchan[index] = 4;
1884 break;
1885 case 5:
1886 data->pwmchan[index] = 6;
1887 break;
1888 case 6:
1889 data->pwmchan[index] = 7;
1890 break;
1891 }
1892 }
1893 }
1894
adt7475_update_measure(struct device * dev)1895 static int adt7475_update_measure(struct device *dev)
1896 {
1897 struct adt7475_data *data = dev_get_drvdata(dev);
1898 struct i2c_client *client = data->client;
1899 u16 ext;
1900 int i;
1901 int ret;
1902
1903 ret = adt7475_read(REG_STATUS2);
1904 if (ret < 0)
1905 return ret;
1906 data->alarms = ret << 8;
1907
1908 ret = adt7475_read(REG_STATUS1);
1909 if (ret < 0)
1910 return ret;
1911 data->alarms |= ret;
1912
1913 ret = adt7475_read(REG_EXTEND2);
1914 if (ret < 0)
1915 return ret;
1916
1917 ext = (ret << 8);
1918
1919 ret = adt7475_read(REG_EXTEND1);
1920 if (ret < 0)
1921 return ret;
1922
1923 ext |= ret;
1924
1925 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
1926 if (!(data->has_voltage & (1 << i)))
1927 continue;
1928 ret = adt7475_read(VOLTAGE_REG(i));
1929 if (ret < 0)
1930 return ret;
1931 data->voltage[INPUT][i] =
1932 (ret << 2) |
1933 ((ext >> (i * 2)) & 3);
1934 }
1935
1936 for (i = 0; i < ADT7475_TEMP_COUNT; i++) {
1937 ret = adt7475_read(TEMP_REG(i));
1938 if (ret < 0)
1939 return ret;
1940 data->temp[INPUT][i] =
1941 (ret << 2) |
1942 ((ext >> ((i + 5) * 2)) & 3);
1943 }
1944
1945 if (data->has_voltage & (1 << 5)) {
1946 ret = adt7475_read(REG_STATUS4);
1947 if (ret < 0)
1948 return ret;
1949 data->alarms |= ret << 24;
1950
1951 ret = adt7475_read(REG_EXTEND3);
1952 if (ret < 0)
1953 return ret;
1954 ext = ret;
1955
1956 ret = adt7475_read(REG_VTT);
1957 if (ret < 0)
1958 return ret;
1959 data->voltage[INPUT][5] = ret << 2 |
1960 ((ext >> 4) & 3);
1961 }
1962
1963 for (i = 0; i < ADT7475_TACH_COUNT; i++) {
1964 if (i == 3 && !data->has_fan4)
1965 continue;
1966 ret = adt7475_read_word(client, TACH_REG(i));
1967 if (ret < 0)
1968 return ret;
1969 data->tach[INPUT][i] = ret;
1970 }
1971
1972 /* Updated by hw when in auto mode */
1973 for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1974 if (i == 1 && !data->has_pwm2)
1975 continue;
1976 ret = adt7475_read(PWM_REG(i));
1977 if (ret < 0)
1978 return ret;
1979 data->pwm[INPUT][i] = ret;
1980 }
1981
1982 if (data->has_vid) {
1983 ret = adt7475_read(REG_VID);
1984 if (ret < 0)
1985 return ret;
1986 data->vid = ret & 0x3f;
1987 }
1988
1989 return 0;
1990 }
1991
adt7475_update_device(struct device * dev)1992 static struct adt7475_data *adt7475_update_device(struct device *dev)
1993 {
1994 struct adt7475_data *data = dev_get_drvdata(dev);
1995 int ret;
1996
1997 mutex_lock(&data->lock);
1998
1999 /* Measurement values update every 2 seconds */
2000 if (time_after(jiffies, data->measure_updated + HZ * 2) ||
2001 !data->valid) {
2002 ret = adt7475_update_measure(dev);
2003 if (ret) {
2004 data->valid = false;
2005 mutex_unlock(&data->lock);
2006 return ERR_PTR(ret);
2007 }
2008 data->measure_updated = jiffies;
2009 data->valid = true;
2010 }
2011
2012 mutex_unlock(&data->lock);
2013
2014 return data;
2015 }
2016
2017 module_i2c_driver(adt7475_driver);
2018
2019 MODULE_AUTHOR("Advanced Micro Devices, Inc");
2020 MODULE_DESCRIPTION("adt7475 driver");
2021 MODULE_LICENSE("GPL");
2022
