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hwmon: (adt7475) Add support for the ADT7476
[linux-2.6/x86.git] / drivers / hwmon / adt7475.c
blob72c3b754e7b65556f03279d9a98561e7abaac5b4
1 /*
2 * adt7475 - Thermal sensor driver for the ADT7475 chip and derivatives
3 * Copyright (C) 2007-2008, Advanced Micro Devices, Inc.
4 * Copyright (C) 2008 Jordan Crouse <jordan@cosmicpenguin.net>
5 * Copyright (C) 2008 Hans de Goede <hdegoede@redhat.com>
6 * Copyright (C) 2009 Jean Delvare <khali@linux-fr.org>
7 *
8 * Derived from the lm83 driver by Jean Delvare
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
13 */
14
15 #include <linux/module.h>
16 #include <linux/init.h>
17 #include <linux/slab.h>
18 #include <linux/i2c.h>
19 #include <linux/hwmon.h>
20 #include <linux/hwmon-sysfs.h>
21 #include <linux/err.h>
22
23 /* Indexes for the sysfs hooks */
24
25 #define INPUT 0
26 #define MIN 1
27 #define MAX 2
28 #define CONTROL 3
29 #define OFFSET 3
30 #define AUTOMIN 4
31 #define THERM 5
32 #define HYSTERSIS 6
33
34 /* These are unique identifiers for the sysfs functions - unlike the
35 numbers above, these are not also indexes into an array
36 */
37
38 #define ALARM 9
39 #define FAULT 10
40
41 /* 7475 Common Registers */
42
43 #define REG_DEVREV2 0x12 /* ADT7490 only */
44
45 #define REG_VTT 0x1E /* ADT7490 only */
46 #define REG_EXTEND3 0x1F /* ADT7490 only */
47
48 #define REG_VOLTAGE_BASE 0x20
49 #define REG_TEMP_BASE 0x25
50 #define REG_TACH_BASE 0x28
51 #define REG_PWM_BASE 0x30
52 #define REG_PWM_MAX_BASE 0x38
53
54 #define REG_DEVID 0x3D
55 #define REG_VENDID 0x3E
56 #define REG_DEVID2 0x3F
57
58 #define REG_STATUS1 0x41
59 #define REG_STATUS2 0x42
60
61 #define REG_VID 0x43 /* ADT7476 only */
62
63 #define REG_VOLTAGE_MIN_BASE 0x44
64 #define REG_VOLTAGE_MAX_BASE 0x45
65
66 #define REG_TEMP_MIN_BASE 0x4E
67 #define REG_TEMP_MAX_BASE 0x4F
68
69 #define REG_TACH_MIN_BASE 0x54
70
71 #define REG_PWM_CONFIG_BASE 0x5C
72
73 #define REG_TEMP_TRANGE_BASE 0x5F
74
75 #define REG_PWM_MIN_BASE 0x64
76
77 #define REG_TEMP_TMIN_BASE 0x67
78 #define REG_TEMP_THERM_BASE 0x6A
79
80 #define REG_REMOTE1_HYSTERSIS 0x6D
81 #define REG_REMOTE2_HYSTERSIS 0x6E
82
83 #define REG_TEMP_OFFSET_BASE 0x70
84
85 #define REG_CONFIG2 0x73
86
87 #define REG_EXTEND1 0x76
88 #define REG_EXTEND2 0x77
89
90 #define REG_CONFIG3 0x78
91 #define REG_CONFIG5 0x7C
92 #define REG_CONFIG4 0x7D
93
94 #define REG_STATUS4 0x81 /* ADT7490 only */
95
96 #define REG_VTT_MIN 0x84 /* ADT7490 only */
97 #define REG_VTT_MAX 0x86 /* ADT7490 only */
98
99 #define VID_VIDSEL 0x80 /* ADT7476 only */
100
101 #define CONFIG2_ATTN 0x20
102
103 #define CONFIG3_SMBALERT 0x01
104 #define CONFIG3_THERM 0x02
105
106 #define CONFIG4_PINFUNC 0x03
107 #define CONFIG4_MAXDUTY 0x08
108 #define CONFIG4_ATTN_IN10 0x30
109 #define CONFIG4_ATTN_IN43 0xC0
110
111 #define CONFIG5_TWOSCOMP 0x01
112 #define CONFIG5_TEMPOFFSET 0x02
113
114 /* ADT7475 Settings */
115
116 #define ADT7475_VOLTAGE_COUNT 5 /* Not counting Vtt */
117 #define ADT7475_TEMP_COUNT 3
118 #define ADT7475_TACH_COUNT 4
119 #define ADT7475_PWM_COUNT 3
120
121 /* Macro to read the registers */
122
123 #define adt7475_read(reg) i2c_smbus_read_byte_data(client, (reg))
124
125 /* Macros to easily index the registers */
126
127 #define TACH_REG(idx) (REG_TACH_BASE + ((idx) * 2))
128 #define TACH_MIN_REG(idx) (REG_TACH_MIN_BASE + ((idx) * 2))
129
130 #define PWM_REG(idx) (REG_PWM_BASE + (idx))
131 #define PWM_MAX_REG(idx) (REG_PWM_MAX_BASE + (idx))
132 #define PWM_MIN_REG(idx) (REG_PWM_MIN_BASE + (idx))
133 #define PWM_CONFIG_REG(idx) (REG_PWM_CONFIG_BASE + (idx))
134
135 #define VOLTAGE_REG(idx) (REG_VOLTAGE_BASE + (idx))
136 #define VOLTAGE_MIN_REG(idx) (REG_VOLTAGE_MIN_BASE + ((idx) * 2))
137 #define VOLTAGE_MAX_REG(idx) (REG_VOLTAGE_MAX_BASE + ((idx) * 2))
138
139 #define TEMP_REG(idx) (REG_TEMP_BASE + (idx))
140 #define TEMP_MIN_REG(idx) (REG_TEMP_MIN_BASE + ((idx) * 2))
141 #define TEMP_MAX_REG(idx) (REG_TEMP_MAX_BASE + ((idx) * 2))
142 #define TEMP_TMIN_REG(idx) (REG_TEMP_TMIN_BASE + (idx))
143 #define TEMP_THERM_REG(idx) (REG_TEMP_THERM_BASE + (idx))
144 #define TEMP_OFFSET_REG(idx) (REG_TEMP_OFFSET_BASE + (idx))
145 #define TEMP_TRANGE_REG(idx) (REG_TEMP_TRANGE_BASE + (idx))
146
147 static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
148
149 I2C_CLIENT_INSMOD_4(adt7473, adt7475, adt7476, adt7490);
150
151 static const struct i2c_device_id adt7475_id[] = {
152 { "adt7473", adt7473 },
153 { "adt7475", adt7475 },
154 { "adt7476", adt7476 },
155 { "adt7490", adt7490 },
156 { }
157 };
158 MODULE_DEVICE_TABLE(i2c, adt7475_id);
159
160 struct adt7475_data {
161 struct device *hwmon_dev;
162 struct mutex lock;
163
164 unsigned long measure_updated;
165 unsigned long limits_updated;
166 char valid;
167
168 u8 config4;
169 u8 config5;
170 u8 has_voltage;
171 u8 bypass_attn; /* Bypass voltage attenuator */
172 u8 has_pwm2:1;
173 u8 has_fan4:1;
174 u32 alarms;
175 u16 voltage[3][6];
176 u16 temp[7][3];
177 u16 tach[2][4];
178 u8 pwm[4][3];
179 u8 range[3];
180 u8 pwmctl[3];
181 u8 pwmchan[3];
182 };
183
184 static struct i2c_driver adt7475_driver;
185 static struct adt7475_data *adt7475_update_device(struct device *dev);
186 static void adt7475_read_hystersis(struct i2c_client *client);
187 static void adt7475_read_pwm(struct i2c_client *client, int index);
188
189 /* Given a temp value, convert it to register value */
190
191 static inline u16 temp2reg(struct adt7475_data *data, long val)
192 {
193 u16 ret;
194
195 if (!(data->config5 & CONFIG5_TWOSCOMP)) {
196 val = SENSORS_LIMIT(val, -64000, 191000);
197 ret = (val + 64500) / 1000;
198 } else {
199 val = SENSORS_LIMIT(val, -128000, 127000);
200 if (val < -500)
201 ret = (256500 + val) / 1000;
202 else
203 ret = (val + 500) / 1000;
204 }
205
206 return ret << 2;
207 }
208
209 /* Given a register value, convert it to a real temp value */
210
211 static inline int reg2temp(struct adt7475_data *data, u16 reg)
212 {
213 if (data->config5 & CONFIG5_TWOSCOMP) {
214 if (reg >= 512)
215 return (reg - 1024) * 250;
216 else
217 return reg * 250;
218 } else
219 return (reg - 256) * 250;
220 }
221
222 static inline int tach2rpm(u16 tach)
223 {
224 if (tach == 0 || tach == 0xFFFF)
225 return 0;
226
227 return (90000 * 60) / tach;
228 }
229
230 static inline u16 rpm2tach(unsigned long rpm)
231 {
232 if (rpm == 0)
233 return 0;
234
235 return SENSORS_LIMIT((90000 * 60) / rpm, 1, 0xFFFF);
236 }
237
238 /* Scaling factors for voltage inputs, taken from the ADT7490 datasheet */
239 static const int adt7473_in_scaling[ADT7475_VOLTAGE_COUNT + 1][2] = {
240 { 45, 94 }, /* +2.5V */
241 { 175, 525 }, /* Vccp */
242 { 68, 71 }, /* Vcc */
243 { 93, 47 }, /* +5V */
244 { 120, 20 }, /* +12V */
245 { 45, 45 }, /* Vtt */
246 };
247
248 static inline int reg2volt(int channel, u16 reg, u8 bypass_attn)
249 {
250 const int *r = adt7473_in_scaling[channel];
251
252 if (bypass_attn & (1 << channel))
253 return DIV_ROUND_CLOSEST(reg * 2250, 1024);
254 return DIV_ROUND_CLOSEST(reg * (r[0] + r[1]) * 2250, r[1] * 1024);
255 }
256
257 static inline u16 volt2reg(int channel, long volt, u8 bypass_attn)
258 {
259 const int *r = adt7473_in_scaling[channel];
260 long reg;
261
262 if (bypass_attn & (1 << channel))
263 reg = (volt * 1024) / 2250;
264 else
265 reg = (volt * r[1] * 1024) / ((r[0] + r[1]) * 2250);
266 return SENSORS_LIMIT(reg, 0, 1023) & (0xff << 2);
267 }
268
269 static u16 adt7475_read_word(struct i2c_client *client, int reg)
270 {
271 u16 val;
272
273 val = i2c_smbus_read_byte_data(client, reg);
274 val |= (i2c_smbus_read_byte_data(client, reg + 1) << 8);
275
276 return val;
277 }
278
279 static void adt7475_write_word(struct i2c_client *client, int reg, u16 val)
280 {
281 i2c_smbus_write_byte_data(client, reg + 1, val >> 8);
282 i2c_smbus_write_byte_data(client, reg, val & 0xFF);
283 }
284
285 /* Find the nearest value in a table - used for pwm frequency and
286 auto temp range */
287 static int find_nearest(long val, const int *array, int size)
288 {
289 int i;
290
291 if (val < array[0])
292 return 0;
293
294 if (val > array[size - 1])
295 return size - 1;
296
297 for (i = 0; i < size - 1; i++) {
298 int a, b;
299
300 if (val > array[i + 1])
301 continue;
302
303 a = val - array[i];
304 b = array[i + 1] - val;
305
306 return (a <= b) ? i : i + 1;
307 }
308
309 return 0;
310 }
311
312 static ssize_t show_voltage(struct device *dev, struct device_attribute *attr,
313 char *buf)
314 {
315 struct adt7475_data *data = adt7475_update_device(dev);
316 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
317 unsigned short val;
318
319 switch (sattr->nr) {
320 case ALARM:
321 return sprintf(buf, "%d\n",
322 (data->alarms >> sattr->index) & 1);
323 default:
324 val = data->voltage[sattr->nr][sattr->index];
325 return sprintf(buf, "%d\n",
326 reg2volt(sattr->index, val, data->bypass_attn));
327 }
328 }
329
330 static ssize_t set_voltage(struct device *dev, struct device_attribute *attr,
331 const char *buf, size_t count)
332 {
333
334 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
335 struct i2c_client *client = to_i2c_client(dev);
336 struct adt7475_data *data = i2c_get_clientdata(client);
337 unsigned char reg;
338 long val;
339
340 if (strict_strtol(buf, 10, &val))
341 return -EINVAL;
342
343 mutex_lock(&data->lock);
344
345 data->voltage[sattr->nr][sattr->index] =
346 volt2reg(sattr->index, val, data->bypass_attn);
347
348 if (sattr->index < ADT7475_VOLTAGE_COUNT) {
349 if (sattr->nr == MIN)
350 reg = VOLTAGE_MIN_REG(sattr->index);
351 else
352 reg = VOLTAGE_MAX_REG(sattr->index);
353 } else {
354 if (sattr->nr == MIN)
355 reg = REG_VTT_MIN;
356 else
357 reg = REG_VTT_MAX;
358 }
359
360 i2c_smbus_write_byte_data(client, reg,
361 data->voltage[sattr->nr][sattr->index] >> 2);
362 mutex_unlock(&data->lock);
363
364 return count;
365 }
366
367 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
368 char *buf)
369 {
370 struct adt7475_data *data = adt7475_update_device(dev);
371 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
372 int out;
373
374 switch (sattr->nr) {
375 case HYSTERSIS:
376 mutex_lock(&data->lock);
377 out = data->temp[sattr->nr][sattr->index];
378 if (sattr->index != 1)
379 out = (out >> 4) & 0xF;
380 else
381 out = (out & 0xF);
382 /* Show the value as an absolute number tied to
383 * THERM */
384 out = reg2temp(data, data->temp[THERM][sattr->index]) -
385 out * 1000;
386 mutex_unlock(&data->lock);
387 break;
388
389 case OFFSET:
390 /* Offset is always 2's complement, regardless of the
391 * setting in CONFIG5 */
392 mutex_lock(&data->lock);
393 out = (s8)data->temp[sattr->nr][sattr->index];
394 if (data->config5 & CONFIG5_TEMPOFFSET)
395 out *= 1000;
396 else
397 out *= 500;
398 mutex_unlock(&data->lock);
399 break;
400
401 case ALARM:
402 out = (data->alarms >> (sattr->index + 4)) & 1;
403 break;
404
405 case FAULT:
406 /* Note - only for remote1 and remote2 */
407 out = !!(data->alarms & (sattr->index ? 0x8000 : 0x4000));
408 break;
409
410 default:
411 /* All other temp values are in the configured format */
412 out = reg2temp(data, data->temp[sattr->nr][sattr->index]);
413 }
414
415 return sprintf(buf, "%d\n", out);
416 }
417
418 static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
419 const char *buf, size_t count)
420 {
421 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
422 struct i2c_client *client = to_i2c_client(dev);
423 struct adt7475_data *data = i2c_get_clientdata(client);
424 unsigned char reg = 0;
425 u8 out;
426 int temp;
427 long val;
428
429 if (strict_strtol(buf, 10, &val))
430 return -EINVAL;
431
432 mutex_lock(&data->lock);
433
434 /* We need the config register in all cases for temp <-> reg conv. */
435 data->config5 = adt7475_read(REG_CONFIG5);
436
437 switch (sattr->nr) {
438 case OFFSET:
439 if (data->config5 & CONFIG5_TEMPOFFSET) {
440 val = SENSORS_LIMIT(val, -63000, 127000);
441 out = data->temp[OFFSET][sattr->index] = val / 1000;
442 } else {
443 val = SENSORS_LIMIT(val, -63000, 64000);
444 out = data->temp[OFFSET][sattr->index] = val / 500;
445 }
446 break;
447
448 case HYSTERSIS:
449 /* The value will be given as an absolute value, turn it
450 into an offset based on THERM */
451
452 /* Read fresh THERM and HYSTERSIS values from the chip */
453 data->temp[THERM][sattr->index] =
454 adt7475_read(TEMP_THERM_REG(sattr->index)) << 2;
455 adt7475_read_hystersis(client);
456
457 temp = reg2temp(data, data->temp[THERM][sattr->index]);
458 val = SENSORS_LIMIT(val, temp - 15000, temp);
459 val = (temp - val) / 1000;
460
461 if (sattr->index != 1) {
462 data->temp[HYSTERSIS][sattr->index] &= 0xF0;
463 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF) << 4;
464 } else {
465 data->temp[HYSTERSIS][sattr->index] &= 0x0F;
466 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF);
467 }
468
469 out = data->temp[HYSTERSIS][sattr->index];
470 break;
471
472 default:
473 data->temp[sattr->nr][sattr->index] = temp2reg(data, val);
474
475 /* We maintain an extra 2 digits of precision for simplicity
476 * - shift those back off before writing the value */
477 out = (u8) (data->temp[sattr->nr][sattr->index] >> 2);
478 }
479
480 switch (sattr->nr) {
481 case MIN:
482 reg = TEMP_MIN_REG(sattr->index);
483 break;
484 case MAX:
485 reg = TEMP_MAX_REG(sattr->index);
486 break;
487 case OFFSET:
488 reg = TEMP_OFFSET_REG(sattr->index);
489 break;
490 case AUTOMIN:
491 reg = TEMP_TMIN_REG(sattr->index);
492 break;
493 case THERM:
494 reg = TEMP_THERM_REG(sattr->index);
495 break;
496 case HYSTERSIS:
497 if (sattr->index != 2)
498 reg = REG_REMOTE1_HYSTERSIS;
499 else
500 reg = REG_REMOTE2_HYSTERSIS;
501
502 break;
503 }
504
505 i2c_smbus_write_byte_data(client, reg, out);
506
507 mutex_unlock(&data->lock);
508 return count;
509 }
510
511 /* Table of autorange values - the user will write the value in millidegrees,
512 and we'll convert it */
513 static const int autorange_table[] = {
514 2000, 2500, 3330, 4000, 5000, 6670, 8000,
515 10000, 13330, 16000, 20000, 26670, 32000, 40000,
516 53330, 80000
517 };
518
519 static ssize_t show_point2(struct device *dev, struct device_attribute *attr,
520 char *buf)
521 {
522 struct adt7475_data *data = adt7475_update_device(dev);
523 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
524 int out, val;
525
526 mutex_lock(&data->lock);
527 out = (data->range[sattr->index] >> 4) & 0x0F;
528 val = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
529 mutex_unlock(&data->lock);
530
531 return sprintf(buf, "%d\n", val + autorange_table[out]);
532 }
533
534 static ssize_t set_point2(struct device *dev, struct device_attribute *attr,
535 const char *buf, size_t count)
536 {
537 struct i2c_client *client = to_i2c_client(dev);
538 struct adt7475_data *data = i2c_get_clientdata(client);
539 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
540 int temp;
541 long val;
542
543 if (strict_strtol(buf, 10, &val))
544 return -EINVAL;
545
546 mutex_lock(&data->lock);
547
548 /* Get a fresh copy of the needed registers */
549 data->config5 = adt7475_read(REG_CONFIG5);
550 data->temp[AUTOMIN][sattr->index] =
551 adt7475_read(TEMP_TMIN_REG(sattr->index)) << 2;
552 data->range[sattr->index] =
553 adt7475_read(TEMP_TRANGE_REG(sattr->index));
554
555 /* The user will write an absolute value, so subtract the start point
556 to figure the range */
557 temp = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
558 val = SENSORS_LIMIT(val, temp + autorange_table[0],
559 temp + autorange_table[ARRAY_SIZE(autorange_table) - 1]);
560 val -= temp;
561
562 /* Find the nearest table entry to what the user wrote */
563 val = find_nearest(val, autorange_table, ARRAY_SIZE(autorange_table));
564
565 data->range[sattr->index] &= ~0xF0;
566 data->range[sattr->index] |= val << 4;
567
568 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
569 data->range[sattr->index]);
570
571 mutex_unlock(&data->lock);
572 return count;
573 }
574
575 static ssize_t show_tach(struct device *dev, struct device_attribute *attr,
576 char *buf)
577 {
578 struct adt7475_data *data = adt7475_update_device(dev);
579 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
580 int out;
581
582 if (sattr->nr == ALARM)
583 out = (data->alarms >> (sattr->index + 10)) & 1;
584 else
585 out = tach2rpm(data->tach[sattr->nr][sattr->index]);
586
587 return sprintf(buf, "%d\n", out);
588 }
589
590 static ssize_t set_tach(struct device *dev, struct device_attribute *attr,
591 const char *buf, size_t count)
592 {
593
594 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
595 struct i2c_client *client = to_i2c_client(dev);
596 struct adt7475_data *data = i2c_get_clientdata(client);
597 unsigned long val;
598
599 if (strict_strtoul(buf, 10, &val))
600 return -EINVAL;
601
602 mutex_lock(&data->lock);
603
604 data->tach[MIN][sattr->index] = rpm2tach(val);
605
606 adt7475_write_word(client, TACH_MIN_REG(sattr->index),
607 data->tach[MIN][sattr->index]);
608
609 mutex_unlock(&data->lock);
610 return count;
611 }
612
613 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
614 char *buf)
615 {
616 struct adt7475_data *data = adt7475_update_device(dev);
617 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
618
619 return sprintf(buf, "%d\n", data->pwm[sattr->nr][sattr->index]);
620 }
621
622 static ssize_t show_pwmchan(struct device *dev, struct device_attribute *attr,
623 char *buf)
624 {
625 struct adt7475_data *data = adt7475_update_device(dev);
626 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
627
628 return sprintf(buf, "%d\n", data->pwmchan[sattr->index]);
629 }
630
631 static ssize_t show_pwmctrl(struct device *dev, struct device_attribute *attr,
632 char *buf)
633 {
634 struct adt7475_data *data = adt7475_update_device(dev);
635 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
636
637 return sprintf(buf, "%d\n", data->pwmctl[sattr->index]);
638 }
639
640 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
641 const char *buf, size_t count)
642 {
643
644 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
645 struct i2c_client *client = to_i2c_client(dev);
646 struct adt7475_data *data = i2c_get_clientdata(client);
647 unsigned char reg = 0;
648 long val;
649
650 if (strict_strtol(buf, 10, &val))
651 return -EINVAL;
652
653 mutex_lock(&data->lock);
654
655 switch (sattr->nr) {
656 case INPUT:
657 /* Get a fresh value for CONTROL */
658 data->pwm[CONTROL][sattr->index] =
659 adt7475_read(PWM_CONFIG_REG(sattr->index));
660
661 /* If we are not in manual mode, then we shouldn't allow
662 * the user to set the pwm speed */
663 if (((data->pwm[CONTROL][sattr->index] >> 5) & 7) != 7) {
664 mutex_unlock(&data->lock);
665 return count;
666 }
667
668 reg = PWM_REG(sattr->index);
669 break;
670
671 case MIN:
672 reg = PWM_MIN_REG(sattr->index);
673 break;
674
675 case MAX:
676 reg = PWM_MAX_REG(sattr->index);
677 break;
678 }
679
680 data->pwm[sattr->nr][sattr->index] = SENSORS_LIMIT(val, 0, 0xFF);
681 i2c_smbus_write_byte_data(client, reg,
682 data->pwm[sattr->nr][sattr->index]);
683
684 mutex_unlock(&data->lock);
685
686 return count;
687 }
688
689 /* Called by set_pwmctrl and set_pwmchan */
690
691 static int hw_set_pwm(struct i2c_client *client, int index,
692 unsigned int pwmctl, unsigned int pwmchan)
693 {
694 struct adt7475_data *data = i2c_get_clientdata(client);
695 long val = 0;
696
697 switch (pwmctl) {
698 case 0:
699 val = 0x03; /* Run at full speed */
700 break;
701 case 1:
702 val = 0x07; /* Manual mode */
703 break;
704 case 2:
705 switch (pwmchan) {
706 case 1:
707 /* Remote1 controls PWM */
708 val = 0x00;
709 break;
710 case 2:
711 /* local controls PWM */
712 val = 0x01;
713 break;
714 case 4:
715 /* remote2 controls PWM */
716 val = 0x02;
717 break;
718 case 6:
719 /* local/remote2 control PWM */
720 val = 0x05;
721 break;
722 case 7:
723 /* All three control PWM */
724 val = 0x06;
725 break;
726 default:
727 return -EINVAL;
728 }
729 break;
730 default:
731 return -EINVAL;
732 }
733
734 data->pwmctl[index] = pwmctl;
735 data->pwmchan[index] = pwmchan;
736
737 data->pwm[CONTROL][index] &= ~0xE0;
738 data->pwm[CONTROL][index] |= (val & 7) << 5;
739
740 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
741 data->pwm[CONTROL][index]);
742
743 return 0;
744 }
745
746 static ssize_t set_pwmchan(struct device *dev, struct device_attribute *attr,
747 const char *buf, size_t count)
748 {
749 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
750 struct i2c_client *client = to_i2c_client(dev);
751 struct adt7475_data *data = i2c_get_clientdata(client);
752 int r;
753 long val;
754
755 if (strict_strtol(buf, 10, &val))
756 return -EINVAL;
757
758 mutex_lock(&data->lock);
759 /* Read Modify Write PWM values */
760 adt7475_read_pwm(client, sattr->index);
761 r = hw_set_pwm(client, sattr->index, data->pwmctl[sattr->index], val);
762 if (r)
763 count = r;
764 mutex_unlock(&data->lock);
765
766 return count;
767 }
768
769 static ssize_t set_pwmctrl(struct device *dev, struct device_attribute *attr,
770 const char *buf, size_t count)
771 {
772 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
773 struct i2c_client *client = to_i2c_client(dev);
774 struct adt7475_data *data = i2c_get_clientdata(client);
775 int r;
776 long val;
777
778 if (strict_strtol(buf, 10, &val))
779 return -EINVAL;
780
781 mutex_lock(&data->lock);
782 /* Read Modify Write PWM values */
783 adt7475_read_pwm(client, sattr->index);
784 r = hw_set_pwm(client, sattr->index, val, data->pwmchan[sattr->index]);
785 if (r)
786 count = r;
787 mutex_unlock(&data->lock);
788
789 return count;
790 }
791
792 /* List of frequencies for the PWM */
793 static const int pwmfreq_table[] = {
794 11, 14, 22, 29, 35, 44, 58, 88
795 };
796
797 static ssize_t show_pwmfreq(struct device *dev, struct device_attribute *attr,
798 char *buf)
799 {
800 struct adt7475_data *data = adt7475_update_device(dev);
801 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
802
803 return sprintf(buf, "%d\n",
804 pwmfreq_table[data->range[sattr->index] & 7]);
805 }
806
807 static ssize_t set_pwmfreq(struct device *dev, struct device_attribute *attr,
808 const char *buf, size_t count)
809 {
810 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
811 struct i2c_client *client = to_i2c_client(dev);
812 struct adt7475_data *data = i2c_get_clientdata(client);
813 int out;
814 long val;
815
816 if (strict_strtol(buf, 10, &val))
817 return -EINVAL;
818
819 out = find_nearest(val, pwmfreq_table, ARRAY_SIZE(pwmfreq_table));
820
821 mutex_lock(&data->lock);
822
823 data->range[sattr->index] =
824 adt7475_read(TEMP_TRANGE_REG(sattr->index));
825 data->range[sattr->index] &= ~7;
826 data->range[sattr->index] |= out;
827
828 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
829 data->range[sattr->index]);
830
831 mutex_unlock(&data->lock);
832 return count;
833 }
834
835 static ssize_t show_pwm_at_crit(struct device *dev,
836 struct device_attribute *devattr, char *buf)
837 {
838 struct adt7475_data *data = adt7475_update_device(dev);
839 return sprintf(buf, "%d\n", !!(data->config4 & CONFIG4_MAXDUTY));
840 }
841
842 static ssize_t set_pwm_at_crit(struct device *dev,
843 struct device_attribute *devattr,
844 const char *buf, size_t count)
845 {
846 struct i2c_client *client = to_i2c_client(dev);
847 struct adt7475_data *data = i2c_get_clientdata(client);
848 long val;
849
850 if (strict_strtol(buf, 10, &val))
851 return -EINVAL;
852 if (val != 0 && val != 1)
853 return -EINVAL;
854
855 mutex_lock(&data->lock);
856 data->config4 = i2c_smbus_read_byte_data(client, REG_CONFIG4);
857 if (val)
858 data->config4 |= CONFIG4_MAXDUTY;
859 else
860 data->config4 &= ~CONFIG4_MAXDUTY;
861 i2c_smbus_write_byte_data(client, REG_CONFIG4, data->config4);
862 mutex_unlock(&data->lock);
863
864 return count;
865 }
866
867 static SENSOR_DEVICE_ATTR_2(in0_input, S_IRUGO, show_voltage, NULL, INPUT, 0);
868 static SENSOR_DEVICE_ATTR_2(in0_max, S_IRUGO | S_IWUSR, show_voltage,
869 set_voltage, MAX, 0);
870 static SENSOR_DEVICE_ATTR_2(in0_min, S_IRUGO | S_IWUSR, show_voltage,
871 set_voltage, MIN, 0);
872 static SENSOR_DEVICE_ATTR_2(in0_alarm, S_IRUGO, show_voltage, NULL, ALARM, 0);
873 static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_voltage, NULL, INPUT, 1);
874 static SENSOR_DEVICE_ATTR_2(in1_max, S_IRUGO | S_IWUSR, show_voltage,
875 set_voltage, MAX, 1);
876 static SENSOR_DEVICE_ATTR_2(in1_min, S_IRUGO | S_IWUSR, show_voltage,
877 set_voltage, MIN, 1);
878 static SENSOR_DEVICE_ATTR_2(in1_alarm, S_IRUGO, show_voltage, NULL, ALARM, 1);
879 static SENSOR_DEVICE_ATTR_2(in2_input, S_IRUGO, show_voltage, NULL, INPUT, 2);
880 static SENSOR_DEVICE_ATTR_2(in2_max, S_IRUGO | S_IWUSR, show_voltage,
881 set_voltage, MAX, 2);
882 static SENSOR_DEVICE_ATTR_2(in2_min, S_IRUGO | S_IWUSR, show_voltage,
883 set_voltage, MIN, 2);
884 static SENSOR_DEVICE_ATTR_2(in2_alarm, S_IRUGO, show_voltage, NULL, ALARM, 2);
885 static SENSOR_DEVICE_ATTR_2(in3_input, S_IRUGO, show_voltage, NULL, INPUT, 3);
886 static SENSOR_DEVICE_ATTR_2(in3_max, S_IRUGO | S_IWUSR, show_voltage,
887 set_voltage, MAX, 3);
888 static SENSOR_DEVICE_ATTR_2(in3_min, S_IRUGO | S_IWUSR, show_voltage,
889 set_voltage, MIN, 3);
890 static SENSOR_DEVICE_ATTR_2(in3_alarm, S_IRUGO, show_voltage, NULL, ALARM, 3);
891 static SENSOR_DEVICE_ATTR_2(in4_input, S_IRUGO, show_voltage, NULL, INPUT, 4);
892 static SENSOR_DEVICE_ATTR_2(in4_max, S_IRUGO | S_IWUSR, show_voltage,
893 set_voltage, MAX, 4);
894 static SENSOR_DEVICE_ATTR_2(in4_min, S_IRUGO | S_IWUSR, show_voltage,
895 set_voltage, MIN, 4);
896 static SENSOR_DEVICE_ATTR_2(in4_alarm, S_IRUGO, show_voltage, NULL, ALARM, 8);
897 static SENSOR_DEVICE_ATTR_2(in5_input, S_IRUGO, show_voltage, NULL, INPUT, 5);
898 static SENSOR_DEVICE_ATTR_2(in5_max, S_IRUGO | S_IWUSR, show_voltage,
899 set_voltage, MAX, 5);
900 static SENSOR_DEVICE_ATTR_2(in5_min, S_IRUGO | S_IWUSR, show_voltage,
901 set_voltage, MIN, 5);
902 static SENSOR_DEVICE_ATTR_2(in5_alarm, S_IRUGO, show_voltage, NULL, ALARM, 31);
903 static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, INPUT, 0);
904 static SENSOR_DEVICE_ATTR_2(temp1_alarm, S_IRUGO, show_temp, NULL, ALARM, 0);
905 static SENSOR_DEVICE_ATTR_2(temp1_fault, S_IRUGO, show_temp, NULL, FAULT, 0);
906 static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
907 MAX, 0);
908 static SENSOR_DEVICE_ATTR_2(temp1_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
909 MIN, 0);
910 static SENSOR_DEVICE_ATTR_2(temp1_offset, S_IRUGO | S_IWUSR, show_temp,
911 set_temp, OFFSET, 0);
912 static SENSOR_DEVICE_ATTR_2(temp1_auto_point1_temp, S_IRUGO | S_IWUSR,
913 show_temp, set_temp, AUTOMIN, 0);
914 static SENSOR_DEVICE_ATTR_2(temp1_auto_point2_temp, S_IRUGO | S_IWUSR,
915 show_point2, set_point2, 0, 0);
916 static SENSOR_DEVICE_ATTR_2(temp1_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
917 THERM, 0);
918 static SENSOR_DEVICE_ATTR_2(temp1_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
919 set_temp, HYSTERSIS, 0);
920 static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, INPUT, 1);
921 static SENSOR_DEVICE_ATTR_2(temp2_alarm, S_IRUGO, show_temp, NULL, ALARM, 1);
922 static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
923 MAX, 1);
924 static SENSOR_DEVICE_ATTR_2(temp2_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
925 MIN, 1);
926 static SENSOR_DEVICE_ATTR_2(temp2_offset, S_IRUGO | S_IWUSR, show_temp,
927 set_temp, OFFSET, 1);
928 static SENSOR_DEVICE_ATTR_2(temp2_auto_point1_temp, S_IRUGO | S_IWUSR,
929 show_temp, set_temp, AUTOMIN, 1);
930 static SENSOR_DEVICE_ATTR_2(temp2_auto_point2_temp, S_IRUGO | S_IWUSR,
931 show_point2, set_point2, 0, 1);
932 static SENSOR_DEVICE_ATTR_2(temp2_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
933 THERM, 1);
934 static SENSOR_DEVICE_ATTR_2(temp2_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
935 set_temp, HYSTERSIS, 1);
936 static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, INPUT, 2);
937 static SENSOR_DEVICE_ATTR_2(temp3_alarm, S_IRUGO, show_temp, NULL, ALARM, 2);
938 static SENSOR_DEVICE_ATTR_2(temp3_fault, S_IRUGO, show_temp, NULL, FAULT, 2);
939 static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
940 MAX, 2);
941 static SENSOR_DEVICE_ATTR_2(temp3_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
942 MIN, 2);
943 static SENSOR_DEVICE_ATTR_2(temp3_offset, S_IRUGO | S_IWUSR, show_temp,
944 set_temp, OFFSET, 2);
945 static SENSOR_DEVICE_ATTR_2(temp3_auto_point1_temp, S_IRUGO | S_IWUSR,
946 show_temp, set_temp, AUTOMIN, 2);
947 static SENSOR_DEVICE_ATTR_2(temp3_auto_point2_temp, S_IRUGO | S_IWUSR,
948 show_point2, set_point2, 0, 2);
949 static SENSOR_DEVICE_ATTR_2(temp3_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
950 THERM, 2);
951 static SENSOR_DEVICE_ATTR_2(temp3_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
952 set_temp, HYSTERSIS, 2);
953 static SENSOR_DEVICE_ATTR_2(fan1_input, S_IRUGO, show_tach, NULL, INPUT, 0);
954 static SENSOR_DEVICE_ATTR_2(fan1_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
955 MIN, 0);
956 static SENSOR_DEVICE_ATTR_2(fan1_alarm, S_IRUGO, show_tach, NULL, ALARM, 0);
957 static SENSOR_DEVICE_ATTR_2(fan2_input, S_IRUGO, show_tach, NULL, INPUT, 1);
958 static SENSOR_DEVICE_ATTR_2(fan2_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
959 MIN, 1);
960 static SENSOR_DEVICE_ATTR_2(fan2_alarm, S_IRUGO, show_tach, NULL, ALARM, 1);
961 static SENSOR_DEVICE_ATTR_2(fan3_input, S_IRUGO, show_tach, NULL, INPUT, 2);
962 static SENSOR_DEVICE_ATTR_2(fan3_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
963 MIN, 2);
964 static SENSOR_DEVICE_ATTR_2(fan3_alarm, S_IRUGO, show_tach, NULL, ALARM, 2);
965 static SENSOR_DEVICE_ATTR_2(fan4_input, S_IRUGO, show_tach, NULL, INPUT, 3);
966 static SENSOR_DEVICE_ATTR_2(fan4_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
967 MIN, 3);
968 static SENSOR_DEVICE_ATTR_2(fan4_alarm, S_IRUGO, show_tach, NULL, ALARM, 3);
969 static SENSOR_DEVICE_ATTR_2(pwm1, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
970 0);
971 static SENSOR_DEVICE_ATTR_2(pwm1_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
972 set_pwmfreq, INPUT, 0);
973 static SENSOR_DEVICE_ATTR_2(pwm1_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
974 set_pwmctrl, INPUT, 0);
975 static SENSOR_DEVICE_ATTR_2(pwm1_auto_channels_temp, S_IRUGO | S_IWUSR,
976 show_pwmchan, set_pwmchan, INPUT, 0);
977 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
978 set_pwm, MIN, 0);
979 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
980 set_pwm, MAX, 0);
981 static SENSOR_DEVICE_ATTR_2(pwm2, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
982 1);
983 static SENSOR_DEVICE_ATTR_2(pwm2_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
984 set_pwmfreq, INPUT, 1);
985 static SENSOR_DEVICE_ATTR_2(pwm2_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
986 set_pwmctrl, INPUT, 1);
987 static SENSOR_DEVICE_ATTR_2(pwm2_auto_channels_temp, S_IRUGO | S_IWUSR,
988 show_pwmchan, set_pwmchan, INPUT, 1);
989 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
990 set_pwm, MIN, 1);
991 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
992 set_pwm, MAX, 1);
993 static SENSOR_DEVICE_ATTR_2(pwm3, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
994 2);
995 static SENSOR_DEVICE_ATTR_2(pwm3_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
996 set_pwmfreq, INPUT, 2);
997 static SENSOR_DEVICE_ATTR_2(pwm3_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
998 set_pwmctrl, INPUT, 2);
999 static SENSOR_DEVICE_ATTR_2(pwm3_auto_channels_temp, S_IRUGO | S_IWUSR,
1000 show_pwmchan, set_pwmchan, INPUT, 2);
1001 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
1002 set_pwm, MIN, 2);
1003 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
1004 set_pwm, MAX, 2);
1005
1006 /* Non-standard name, might need revisiting */
1007 static DEVICE_ATTR(pwm_use_point2_pwm_at_crit, S_IWUSR | S_IRUGO,
1008 show_pwm_at_crit, set_pwm_at_crit);
1009
1010 static struct attribute *adt7475_attrs[] = {
1011 &sensor_dev_attr_in1_input.dev_attr.attr,
1012 &sensor_dev_attr_in1_max.dev_attr.attr,
1013 &sensor_dev_attr_in1_min.dev_attr.attr,
1014 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1015 &sensor_dev_attr_in2_input.dev_attr.attr,
1016 &sensor_dev_attr_in2_max.dev_attr.attr,
1017 &sensor_dev_attr_in2_min.dev_attr.attr,
1018 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1019 &sensor_dev_attr_temp1_input.dev_attr.attr,
1020 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1021 &sensor_dev_attr_temp1_fault.dev_attr.attr,
1022 &sensor_dev_attr_temp1_max.dev_attr.attr,
1023 &sensor_dev_attr_temp1_min.dev_attr.attr,
1024 &sensor_dev_attr_temp1_offset.dev_attr.attr,
1025 &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr,
1026 &sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr,
1027 &sensor_dev_attr_temp1_crit.dev_attr.attr,
1028 &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
1029 &sensor_dev_attr_temp2_input.dev_attr.attr,
1030 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1031 &sensor_dev_attr_temp2_max.dev_attr.attr,
1032 &sensor_dev_attr_temp2_min.dev_attr.attr,
1033 &sensor_dev_attr_temp2_offset.dev_attr.attr,
1034 &sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr,
1035 &sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr,
1036 &sensor_dev_attr_temp2_crit.dev_attr.attr,
1037 &sensor_dev_attr_temp2_crit_hyst.dev_attr.attr,
1038 &sensor_dev_attr_temp3_input.dev_attr.attr,
1039 &sensor_dev_attr_temp3_fault.dev_attr.attr,
1040 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1041 &sensor_dev_attr_temp3_max.dev_attr.attr,
1042 &sensor_dev_attr_temp3_min.dev_attr.attr,
1043 &sensor_dev_attr_temp3_offset.dev_attr.attr,
1044 &sensor_dev_attr_temp3_auto_point1_temp.dev_attr.attr,
1045 &sensor_dev_attr_temp3_auto_point2_temp.dev_attr.attr,
1046 &sensor_dev_attr_temp3_crit.dev_attr.attr,
1047 &sensor_dev_attr_temp3_crit_hyst.dev_attr.attr,
1048 &sensor_dev_attr_fan1_input.dev_attr.attr,
1049 &sensor_dev_attr_fan1_min.dev_attr.attr,
1050 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1051 &sensor_dev_attr_fan2_input.dev_attr.attr,
1052 &sensor_dev_attr_fan2_min.dev_attr.attr,
1053 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1054 &sensor_dev_attr_fan3_input.dev_attr.attr,
1055 &sensor_dev_attr_fan3_min.dev_attr.attr,
1056 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1057 &sensor_dev_attr_pwm1.dev_attr.attr,
1058 &sensor_dev_attr_pwm1_freq.dev_attr.attr,
1059 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1060 &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
1061 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1062 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1063 &sensor_dev_attr_pwm3.dev_attr.attr,
1064 &sensor_dev_attr_pwm3_freq.dev_attr.attr,
1065 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1066 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
1067 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1068 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1069 &dev_attr_pwm_use_point2_pwm_at_crit.attr,
1070 NULL,
1071 };
1072
1073 static struct attribute *fan4_attrs[] = {
1074 &sensor_dev_attr_fan4_input.dev_attr.attr,
1075 &sensor_dev_attr_fan4_min.dev_attr.attr,
1076 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1077 NULL
1078 };
1079
1080 static struct attribute *pwm2_attrs[] = {
1081 &sensor_dev_attr_pwm2.dev_attr.attr,
1082 &sensor_dev_attr_pwm2_freq.dev_attr.attr,
1083 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1084 &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
1085 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1086 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1087 NULL
1088 };
1089
1090 static struct attribute *in0_attrs[] = {
1091 &sensor_dev_attr_in0_input.dev_attr.attr,
1092 &sensor_dev_attr_in0_max.dev_attr.attr,
1093 &sensor_dev_attr_in0_min.dev_attr.attr,
1094 &sensor_dev_attr_in0_alarm.dev_attr.attr,
1095 NULL
1096 };
1097
1098 static struct attribute *in3_attrs[] = {
1099 &sensor_dev_attr_in3_input.dev_attr.attr,
1100 &sensor_dev_attr_in3_max.dev_attr.attr,
1101 &sensor_dev_attr_in3_min.dev_attr.attr,
1102 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1103 NULL
1104 };
1105
1106 static struct attribute *in4_attrs[] = {
1107 &sensor_dev_attr_in4_input.dev_attr.attr,
1108 &sensor_dev_attr_in4_max.dev_attr.attr,
1109 &sensor_dev_attr_in4_min.dev_attr.attr,
1110 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1111 NULL
1112 };
1113
1114 static struct attribute *in5_attrs[] = {
1115 &sensor_dev_attr_in5_input.dev_attr.attr,
1116 &sensor_dev_attr_in5_max.dev_attr.attr,
1117 &sensor_dev_attr_in5_min.dev_attr.attr,
1118 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1119 NULL
1120 };
1121
1122 static struct attribute_group adt7475_attr_group = { .attrs = adt7475_attrs };
1123 static struct attribute_group fan4_attr_group = { .attrs = fan4_attrs };
1124 static struct attribute_group pwm2_attr_group = { .attrs = pwm2_attrs };
1125 static struct attribute_group in0_attr_group = { .attrs = in0_attrs };
1126 static struct attribute_group in3_attr_group = { .attrs = in3_attrs };
1127 static struct attribute_group in4_attr_group = { .attrs = in4_attrs };
1128 static struct attribute_group in5_attr_group = { .attrs = in5_attrs };
1129
1130 static int adt7475_detect(struct i2c_client *client, int kind,
1131 struct i2c_board_info *info)
1132 {
1133 struct i2c_adapter *adapter = client->adapter;
1134 int vendid, devid, devid2;
1135 const char *name;
1136
1137 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1138 return -ENODEV;
1139
1140 vendid = adt7475_read(REG_VENDID);
1141 devid2 = adt7475_read(REG_DEVID2);
1142 if (vendid != 0x41 || /* Analog Devices */
1143 (devid2 & 0xf8) != 0x68)
1144 return -ENODEV;
1145
1146 devid = adt7475_read(REG_DEVID);
1147 if (devid == 0x73)
1148 name = "adt7473";
1149 else if (devid == 0x75 && client->addr == 0x2e)
1150 name = "adt7475";
1151 else if (devid == 0x76)
1152 name = "adt7476";
1153 else if ((devid2 & 0xfc) == 0x6c)
1154 name = "adt7490";
1155 else {
1156 dev_dbg(&adapter->dev,
1157 "Couldn't detect an ADT7473/75/76/90 part at "
1158 "0x%02x\n", (unsigned int)client->addr);
1159 return -ENODEV;
1160 }
1161
1162 strlcpy(info->type, name, I2C_NAME_SIZE);
1163
1164 return 0;
1165 }
1166
1167 static void adt7475_remove_files(struct i2c_client *client,
1168 struct adt7475_data *data)
1169 {
1170 sysfs_remove_group(&client->dev.kobj, &adt7475_attr_group);
1171 if (data->has_fan4)
1172 sysfs_remove_group(&client->dev.kobj, &fan4_attr_group);
1173 if (data->has_pwm2)
1174 sysfs_remove_group(&client->dev.kobj, &pwm2_attr_group);
1175 if (data->has_voltage & (1 << 0))
1176 sysfs_remove_group(&client->dev.kobj, &in0_attr_group);
1177 if (data->has_voltage & (1 << 3))
1178 sysfs_remove_group(&client->dev.kobj, &in3_attr_group);
1179 if (data->has_voltage & (1 << 4))
1180 sysfs_remove_group(&client->dev.kobj, &in4_attr_group);
1181 if (data->has_voltage & (1 << 5))
1182 sysfs_remove_group(&client->dev.kobj, &in5_attr_group);
1183 }
1184
1185 static int adt7475_probe(struct i2c_client *client,
1186 const struct i2c_device_id *id)
1187 {
1188 static const char *names[] = {
1189 [adt7473] = "ADT7473",
1190 [adt7475] = "ADT7475",
1191 [adt7476] = "ADT7476",
1192 [adt7490] = "ADT7490",
1193 };
1194
1195 struct adt7475_data *data;
1196 int i, ret = 0, revision;
1197 u8 config2, config3;
1198
1199 data = kzalloc(sizeof(*data), GFP_KERNEL);
1200 if (data == NULL)
1201 return -ENOMEM;
1202
1203 mutex_init(&data->lock);
1204 i2c_set_clientdata(client, data);
1205
1206 /* Initialize device-specific values */
1207 switch (id->driver_data) {
1208 case adt7476:
1209 data->has_voltage = 0x0e; /* in1 to in3 */
1210 revision = adt7475_read(REG_DEVID2) & 0x07;
1211 break;
1212 case adt7490:
1213 data->has_voltage = 0x3e; /* in1 to in5 */
1214 revision = adt7475_read(REG_DEVID2) & 0x03;
1215 if (revision == 0x03)
1216 revision += adt7475_read(REG_DEVREV2);
1217 break;
1218 default:
1219 data->has_voltage = 0x06; /* in1, in2 */
1220 revision = adt7475_read(REG_DEVID2) & 0x07;
1221 }
1222
1223 config3 = adt7475_read(REG_CONFIG3);
1224 /* Pin PWM2 may alternatively be used for ALERT output */
1225 if (!(config3 & CONFIG3_SMBALERT))
1226 data->has_pwm2 = 1;
1227 /* Meaning of this bit is inverted for the ADT7473-1 */
1228 if (id->driver_data == adt7473 && revision >= 1)
1229 data->has_pwm2 = !data->has_pwm2;
1230
1231 data->config4 = adt7475_read(REG_CONFIG4);
1232 /* Pin TACH4 may alternatively be used for THERM */
1233 if ((data->config4 & CONFIG4_PINFUNC) == 0x0)
1234 data->has_fan4 = 1;
1235
1236 /* THERM configuration is more complex on the ADT7476 and ADT7490,
1237 because 2 different pins (TACH4 and +2.5 Vin) can be used for
1238 this function */
1239 if (id->driver_data == adt7490) {
1240 if ((data->config4 & CONFIG4_PINFUNC) == 0x1 &&
1241 !(config3 & CONFIG3_THERM))
1242 data->has_fan4 = 1;
1243 }
1244 if (id->driver_data == adt7476 || id->driver_data == adt7490) {
1245 if (!(config3 & CONFIG3_THERM) ||
1246 (data->config4 & CONFIG4_PINFUNC) == 0x1)
1247 data->has_voltage |= (1 << 0); /* in0 */
1248 }
1249
1250 /* On the ADT7476, the +12V input pin may instead be used as VID5 */
1251 if (id->driver_data == adt7476) {
1252 u8 vid = adt7475_read(REG_VID);
1253 if (!(vid & VID_VIDSEL))
1254 data->has_voltage |= (1 << 4); /* in4 */
1255 }
1256
1257 /* Voltage attenuators can be bypassed, globally or individually */
1258 config2 = adt7475_read(REG_CONFIG2);
1259 if (config2 & CONFIG2_ATTN) {
1260 data->bypass_attn = (0x3 << 3) | 0x3;
1261 } else {
1262 data->bypass_attn = ((data->config4 & CONFIG4_ATTN_IN10) >> 4) |
1263 ((data->config4 & CONFIG4_ATTN_IN43) >> 3);
1264 }
1265 data->bypass_attn &= data->has_voltage;
1266
1267 /* Call adt7475_read_pwm for all pwm's as this will reprogram any
1268 pwm's which are disabled to manual mode with 0% duty cycle */
1269 for (i = 0; i < ADT7475_PWM_COUNT; i++)
1270 adt7475_read_pwm(client, i);
1271
1272 ret = sysfs_create_group(&client->dev.kobj, &adt7475_attr_group);
1273 if (ret)
1274 goto efree;
1275
1276 /* Features that can be disabled individually */
1277 if (data->has_fan4) {
1278 ret = sysfs_create_group(&client->dev.kobj, &fan4_attr_group);
1279 if (ret)
1280 goto eremove;
1281 }
1282 if (data->has_pwm2) {
1283 ret = sysfs_create_group(&client->dev.kobj, &pwm2_attr_group);
1284 if (ret)
1285 goto eremove;
1286 }
1287 if (data->has_voltage & (1 << 0)) {
1288 ret = sysfs_create_group(&client->dev.kobj, &in0_attr_group);
1289 if (ret)
1290 goto eremove;
1291 }
1292 if (data->has_voltage & (1 << 3)) {
1293 ret = sysfs_create_group(&client->dev.kobj, &in3_attr_group);
1294 if (ret)
1295 goto eremove;
1296 }
1297 if (data->has_voltage & (1 << 4)) {
1298 ret = sysfs_create_group(&client->dev.kobj, &in4_attr_group);
1299 if (ret)
1300 goto eremove;
1301 }
1302 if (data->has_voltage & (1 << 5)) {
1303 ret = sysfs_create_group(&client->dev.kobj, &in5_attr_group);
1304 if (ret)
1305 goto eremove;
1306 }
1307
1308 data->hwmon_dev = hwmon_device_register(&client->dev);
1309 if (IS_ERR(data->hwmon_dev)) {
1310 ret = PTR_ERR(data->hwmon_dev);
1311 goto eremove;
1312 }
1313
1314 dev_info(&client->dev, "%s device, revision %d\n",
1315 names[id->driver_data], revision);
1316 if ((data->has_voltage & 0x11) || data->has_fan4 || data->has_pwm2)
1317 dev_info(&client->dev, "Optional features:%s%s%s%s\n",
1318 (data->has_voltage & (1 << 0)) ? " in0" : "",
1319 (data->has_voltage & (1 << 4)) ? " in4" : "",
1320 data->has_fan4 ? " fan4" : "",
1321 data->has_pwm2 ? " pwm2" : "");
1322 if (data->bypass_attn)
1323 dev_info(&client->dev, "Bypassing attenuators on:%s%s%s%s\n",
1324 (data->bypass_attn & (1 << 0)) ? " in0" : "",
1325 (data->bypass_attn & (1 << 1)) ? " in1" : "",
1326 (data->bypass_attn & (1 << 3)) ? " in3" : "",
1327 (data->bypass_attn & (1 << 4)) ? " in4" : "");
1328
1329 return 0;
1330
1331 eremove:
1332 adt7475_remove_files(client, data);
1333 efree:
1334 kfree(data);
1335 return ret;
1336 }
1337
1338 static int adt7475_remove(struct i2c_client *client)
1339 {
1340 struct adt7475_data *data = i2c_get_clientdata(client);
1341
1342 hwmon_device_unregister(data->hwmon_dev);
1343 adt7475_remove_files(client, data);
1344 kfree(data);
1345
1346 return 0;
1347 }
1348
1349 static struct i2c_driver adt7475_driver = {
1350 .class = I2C_CLASS_HWMON,
1351 .driver = {
1352 .name = "adt7475",
1353 },
1354 .probe = adt7475_probe,
1355 .remove = adt7475_remove,
1356 .id_table = adt7475_id,
1357 .detect = adt7475_detect,
1358 .address_data = &addr_data,
1359 };
1360
1361 static void adt7475_read_hystersis(struct i2c_client *client)
1362 {
1363 struct adt7475_data *data = i2c_get_clientdata(client);
1364
1365 data->temp[HYSTERSIS][0] = (u16) adt7475_read(REG_REMOTE1_HYSTERSIS);
1366 data->temp[HYSTERSIS][1] = data->temp[HYSTERSIS][0];
1367 data->temp[HYSTERSIS][2] = (u16) adt7475_read(REG_REMOTE2_HYSTERSIS);
1368 }
1369
1370 static void adt7475_read_pwm(struct i2c_client *client, int index)
1371 {
1372 struct adt7475_data *data = i2c_get_clientdata(client);
1373 unsigned int v;
1374
1375 data->pwm[CONTROL][index] = adt7475_read(PWM_CONFIG_REG(index));
1376
1377 /* Figure out the internal value for pwmctrl and pwmchan
1378 based on the current settings */
1379 v = (data->pwm[CONTROL][index] >> 5) & 7;
1380
1381 if (v == 3)
1382 data->pwmctl[index] = 0;
1383 else if (v == 7)
1384 data->pwmctl[index] = 1;
1385 else if (v == 4) {
1386 /* The fan is disabled - we don't want to
1387 support that, so change to manual mode and
1388 set the duty cycle to 0 instead
1389 */
1390 data->pwm[INPUT][index] = 0;
1391 data->pwm[CONTROL][index] &= ~0xE0;
1392 data->pwm[CONTROL][index] |= (7 << 5);
1393
1394 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
1395 data->pwm[INPUT][index]);
1396
1397 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
1398 data->pwm[CONTROL][index]);
1399
1400 data->pwmctl[index] = 1;
1401 } else {
1402 data->pwmctl[index] = 2;
1403
1404 switch (v) {
1405 case 0:
1406 data->pwmchan[index] = 1;
1407 break;
1408 case 1:
1409 data->pwmchan[index] = 2;
1410 break;
1411 case 2:
1412 data->pwmchan[index] = 4;
1413 break;
1414 case 5:
1415 data->pwmchan[index] = 6;
1416 break;
1417 case 6:
1418 data->pwmchan[index] = 7;
1419 break;
1420 }
1421 }
1422 }
1423
1424 static struct adt7475_data *adt7475_update_device(struct device *dev)
1425 {
1426 struct i2c_client *client = to_i2c_client(dev);
1427 struct adt7475_data *data = i2c_get_clientdata(client);
1428 u16 ext;
1429 int i;
1430
1431 mutex_lock(&data->lock);
1432
1433 /* Measurement values update every 2 seconds */
1434 if (time_after(jiffies, data->measure_updated + HZ * 2) ||
1435 !data->valid) {
1436 data->alarms = adt7475_read(REG_STATUS2) << 8;
1437 data->alarms |= adt7475_read(REG_STATUS1);
1438
1439 ext = (adt7475_read(REG_EXTEND2) << 8) |
1440 adt7475_read(REG_EXTEND1);
1441 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
1442 if (!(data->has_voltage & (1 << i)))
1443 continue;
1444 data->voltage[INPUT][i] =
1445 (adt7475_read(VOLTAGE_REG(i)) << 2) |
1446 ((ext >> (i * 2)) & 3);
1447 }
1448
1449 for (i = 0; i < ADT7475_TEMP_COUNT; i++)
1450 data->temp[INPUT][i] =
1451 (adt7475_read(TEMP_REG(i)) << 2) |
1452 ((ext >> ((i + 5) * 2)) & 3);
1453
1454 if (data->has_voltage & (1 << 5)) {
1455 data->alarms |= adt7475_read(REG_STATUS4) << 24;
1456 ext = adt7475_read(REG_EXTEND3);
1457 data->voltage[INPUT][5] = adt7475_read(REG_VTT) << 2 |
1458 ((ext >> 4) & 3);
1459 }
1460
1461 for (i = 0; i < ADT7475_TACH_COUNT; i++) {
1462 if (i == 3 && !data->has_fan4)
1463 continue;
1464 data->tach[INPUT][i] =
1465 adt7475_read_word(client, TACH_REG(i));
1466 }
1467
1468 /* Updated by hw when in auto mode */
1469 for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1470 if (i == 1 && !data->has_pwm2)
1471 continue;
1472 data->pwm[INPUT][i] = adt7475_read(PWM_REG(i));
1473 }
1474
1475 data->measure_updated = jiffies;
1476 }
1477
1478 /* Limits and settings, should never change update every 60 seconds */
1479 if (time_after(jiffies, data->limits_updated + HZ * 60) ||
1480 !data->valid) {
1481 data->config4 = adt7475_read(REG_CONFIG4);
1482 data->config5 = adt7475_read(REG_CONFIG5);
1483
1484 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
1485 if (!(data->has_voltage & (1 << i)))
1486 continue;
1487 /* Adjust values so they match the input precision */
1488 data->voltage[MIN][i] =
1489 adt7475_read(VOLTAGE_MIN_REG(i)) << 2;
1490 data->voltage[MAX][i] =
1491 adt7475_read(VOLTAGE_MAX_REG(i)) << 2;
1492 }
1493
1494 if (data->has_voltage & (1 << 5)) {
1495 data->voltage[MIN][5] = adt7475_read(REG_VTT_MIN) << 2;
1496 data->voltage[MAX][5] = adt7475_read(REG_VTT_MAX) << 2;
1497 }
1498
1499 for (i = 0; i < ADT7475_TEMP_COUNT; i++) {
1500 /* Adjust values so they match the input precision */
1501 data->temp[MIN][i] =
1502 adt7475_read(TEMP_MIN_REG(i)) << 2;
1503 data->temp[MAX][i] =
1504 adt7475_read(TEMP_MAX_REG(i)) << 2;
1505 data->temp[AUTOMIN][i] =
1506 adt7475_read(TEMP_TMIN_REG(i)) << 2;
1507 data->temp[THERM][i] =
1508 adt7475_read(TEMP_THERM_REG(i)) << 2;
1509 data->temp[OFFSET][i] =
1510 adt7475_read(TEMP_OFFSET_REG(i));
1511 }
1512 adt7475_read_hystersis(client);
1513
1514 for (i = 0; i < ADT7475_TACH_COUNT; i++) {
1515 if (i == 3 && !data->has_fan4)
1516 continue;
1517 data->tach[MIN][i] =
1518 adt7475_read_word(client, TACH_MIN_REG(i));
1519 }
1520
1521 for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1522 if (i == 1 && !data->has_pwm2)
1523 continue;
1524 data->pwm[MAX][i] = adt7475_read(PWM_MAX_REG(i));
1525 data->pwm[MIN][i] = adt7475_read(PWM_MIN_REG(i));
1526 /* Set the channel and control information */
1527 adt7475_read_pwm(client, i);
1528 }
1529
1530 data->range[0] = adt7475_read(TEMP_TRANGE_REG(0));
1531 data->range[1] = adt7475_read(TEMP_TRANGE_REG(1));
1532 data->range[2] = adt7475_read(TEMP_TRANGE_REG(2));
1533
1534 data->limits_updated = jiffies;
1535 data->valid = 1;
1536 }
1537
1538 mutex_unlock(&data->lock);
1539
1540 return data;
1541 }
1542
1543 static int __init sensors_adt7475_init(void)
1544 {
1545 return i2c_add_driver(&adt7475_driver);
1546 }
1547
1548 static void __exit sensors_adt7475_exit(void)
1549 {
1550 i2c_del_driver(&adt7475_driver);
1551 }
1552
1553 MODULE_AUTHOR("Advanced Micro Devices, Inc");
1554 MODULE_DESCRIPTION("adt7475 driver");
1555 MODULE_LICENSE("GPL");
1556
1557 module_init(sensors_adt7475_init);
1558 module_exit(sensors_adt7475_exit);
x86 "subsystem" repository