1 /*
2 * A hwmon driver for the Analog Devices ADT7462
3 * Copyright (C) 2008 IBM
4 *
5 * Author: Darrick J. Wong <darrick.wong@oracle.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 */
21
22 #include <linux/module.h>
23 #include <linux/jiffies.h>
24 #include <linux/i2c.h>
25 #include <linux/hwmon.h>
26 #include <linux/hwmon-sysfs.h>
27 #include <linux/err.h>
28 #include <linux/mutex.h>
29 #include <linux/log2.h>
30 #include <linux/slab.h>
31
32 /* Addresses to scan */
33 static const unsigned short normal_i2c[] = { 0x58, 0x5C, I2C_CLIENT_END };
34
35 /* ADT7462 registers */
36 #define ADT7462_REG_DEVICE 0x3D
37 #define ADT7462_REG_VENDOR 0x3E
38 #define ADT7462_REG_REVISION 0x3F
39
40 #define ADT7462_REG_MIN_TEMP_BASE_ADDR 0x44
41 #define ADT7462_REG_MIN_TEMP_MAX_ADDR 0x47
42 #define ADT7462_REG_MAX_TEMP_BASE_ADDR 0x48
43 #define ADT7462_REG_MAX_TEMP_MAX_ADDR 0x4B
44 #define ADT7462_REG_TEMP_BASE_ADDR 0x88
45 #define ADT7462_REG_TEMP_MAX_ADDR 0x8F
46
47 #define ADT7462_REG_FAN_BASE_ADDR 0x98
48 #define ADT7462_REG_FAN_MAX_ADDR 0x9F
49 #define ADT7462_REG_FAN2_BASE_ADDR 0xA2
50 #define ADT7462_REG_FAN2_MAX_ADDR 0xA9
51 #define ADT7462_REG_FAN_ENABLE 0x07
52 #define ADT7462_REG_FAN_MIN_BASE_ADDR 0x78
53 #define ADT7462_REG_FAN_MIN_MAX_ADDR 0x7F
54
55 #define ADT7462_REG_CFG2 0x02
56 #define ADT7462_FSPD_MASK 0x20
57
58 #define ADT7462_REG_PWM_BASE_ADDR 0xAA
59 #define ADT7462_REG_PWM_MAX_ADDR 0xAD
60 #define ADT7462_REG_PWM_MIN_BASE_ADDR 0x28
61 #define ADT7462_REG_PWM_MIN_MAX_ADDR 0x2B
62 #define ADT7462_REG_PWM_MAX 0x2C
63 #define ADT7462_REG_PWM_TEMP_MIN_BASE_ADDR 0x5C
64 #define ADT7462_REG_PWM_TEMP_MIN_MAX_ADDR 0x5F
65 #define ADT7462_REG_PWM_TEMP_RANGE_BASE_ADDR 0x60
66 #define ADT7462_REG_PWM_TEMP_RANGE_MAX_ADDR 0x63
67 #define ADT7462_PWM_HYST_MASK 0x0F
68 #define ADT7462_PWM_RANGE_MASK 0xF0
69 #define ADT7462_PWM_RANGE_SHIFT 4
70 #define ADT7462_REG_PWM_CFG_BASE_ADDR 0x21
71 #define ADT7462_REG_PWM_CFG_MAX_ADDR 0x24
72 #define ADT7462_PWM_CHANNEL_MASK 0xE0
73 #define ADT7462_PWM_CHANNEL_SHIFT 5
74
75 #define ADT7462_REG_PIN_CFG_BASE_ADDR 0x10
76 #define ADT7462_REG_PIN_CFG_MAX_ADDR 0x13
77 #define ADT7462_PIN7_INPUT 0x01 /* cfg0 */
78 #define ADT7462_DIODE3_INPUT 0x20
79 #define ADT7462_DIODE1_INPUT 0x40
80 #define ADT7462_VID_INPUT 0x80
81 #define ADT7462_PIN22_INPUT 0x04 /* cfg1 */
82 #define ADT7462_PIN21_INPUT 0x08
83 #define ADT7462_PIN19_INPUT 0x10
84 #define ADT7462_PIN15_INPUT 0x20
85 #define ADT7462_PIN13_INPUT 0x40
86 #define ADT7462_PIN8_INPUT 0x80
87 #define ADT7462_PIN23_MASK 0x03
88 #define ADT7462_PIN23_SHIFT 0
89 #define ADT7462_PIN26_MASK 0x0C /* cfg2 */
90 #define ADT7462_PIN26_SHIFT 2
91 #define ADT7462_PIN25_MASK 0x30
92 #define ADT7462_PIN25_SHIFT 4
93 #define ADT7462_PIN24_MASK 0xC0
94 #define ADT7462_PIN24_SHIFT 6
95 #define ADT7462_PIN26_VOLT_INPUT 0x08
96 #define ADT7462_PIN25_VOLT_INPUT 0x20
97 #define ADT7462_PIN28_SHIFT 4 /* cfg3 */
98 #define ADT7462_PIN28_VOLT 0x5
99
100 #define ADT7462_REG_ALARM1 0xB8
101 #define ADT7462_LT_ALARM 0x02
102 #define ADT7462_R1T_ALARM 0x04
103 #define ADT7462_R2T_ALARM 0x08
104 #define ADT7462_R3T_ALARM 0x10
105 #define ADT7462_REG_ALARM2 0xBB
106 #define ADT7462_V0_ALARM 0x01
107 #define ADT7462_V1_ALARM 0x02
108 #define ADT7462_V2_ALARM 0x04
109 #define ADT7462_V3_ALARM 0x08
110 #define ADT7462_V4_ALARM 0x10
111 #define ADT7462_V5_ALARM 0x20
112 #define ADT7462_V6_ALARM 0x40
113 #define ADT7462_V7_ALARM 0x80
114 #define ADT7462_REG_ALARM3 0xBC
115 #define ADT7462_V8_ALARM 0x08
116 #define ADT7462_V9_ALARM 0x10
117 #define ADT7462_V10_ALARM 0x20
118 #define ADT7462_V11_ALARM 0x40
119 #define ADT7462_V12_ALARM 0x80
120 #define ADT7462_REG_ALARM4 0xBD
121 #define ADT7462_F0_ALARM 0x01
122 #define ADT7462_F1_ALARM 0x02
123 #define ADT7462_F2_ALARM 0x04
124 #define ADT7462_F3_ALARM 0x08
125 #define ADT7462_F4_ALARM 0x10
126 #define ADT7462_F5_ALARM 0x20
127 #define ADT7462_F6_ALARM 0x40
128 #define ADT7462_F7_ALARM 0x80
129 #define ADT7462_ALARM1 0x0000
130 #define ADT7462_ALARM2 0x0100
131 #define ADT7462_ALARM3 0x0200
132 #define ADT7462_ALARM4 0x0300
133 #define ADT7462_ALARM_REG_SHIFT 8
134 #define ADT7462_ALARM_FLAG_MASK 0x0F
135
136 #define ADT7462_TEMP_COUNT 4
137 #define ADT7462_TEMP_REG(x) (ADT7462_REG_TEMP_BASE_ADDR + ((x) * 2))
138 #define ADT7462_TEMP_MIN_REG(x) (ADT7462_REG_MIN_TEMP_BASE_ADDR + (x))
139 #define ADT7462_TEMP_MAX_REG(x) (ADT7462_REG_MAX_TEMP_BASE_ADDR + (x))
140 #define TEMP_FRAC_OFFSET 6
141
142 #define ADT7462_FAN_COUNT 8
143 #define ADT7462_REG_FAN_MIN(x) (ADT7462_REG_FAN_MIN_BASE_ADDR + (x))
144
145 #define ADT7462_PWM_COUNT 4
146 #define ADT7462_REG_PWM(x) (ADT7462_REG_PWM_BASE_ADDR + (x))
147 #define ADT7462_REG_PWM_MIN(x) (ADT7462_REG_PWM_MIN_BASE_ADDR + (x))
148 #define ADT7462_REG_PWM_TMIN(x) \
149 (ADT7462_REG_PWM_TEMP_MIN_BASE_ADDR + (x))
150 #define ADT7462_REG_PWM_TRANGE(x) \
151 (ADT7462_REG_PWM_TEMP_RANGE_BASE_ADDR + (x))
152
153 #define ADT7462_PIN_CFG_REG_COUNT 4
154 #define ADT7462_REG_PIN_CFG(x) (ADT7462_REG_PIN_CFG_BASE_ADDR + (x))
155 #define ADT7462_REG_PWM_CFG(x) (ADT7462_REG_PWM_CFG_BASE_ADDR + (x))
156
157 #define ADT7462_ALARM_REG_COUNT 4
158
159 /*
160 * The chip can measure 13 different voltage sources:
161 *
162 * 1. +12V1 (pin 7)
163 * 2. Vccp1/+2.5V/+1.8V/+1.5V (pin 23)
164 * 3. +12V3 (pin 22)
165 * 4. +5V (pin 21)
166 * 5. +1.25V/+0.9V (pin 19)
167 * 6. +2.5V/+1.8V (pin 15)
168 * 7. +3.3v (pin 13)
169 * 8. +12V2 (pin 8)
170 * 9. Vbatt/FSB_Vtt (pin 26)
171 * A. +3.3V/+1.2V1 (pin 25)
172 * B. Vccp2/+2.5V/+1.8V/+1.5V (pin 24)
173 * C. +1.5V ICH (only if BOTH pin 28/29 are set to +1.5V)
174 * D. +1.5V 3GPIO (only if BOTH pin 28/29 are set to +1.5V)
175 *
176 * Each of these 13 has a factor to convert raw to voltage. Even better,
177 * the pins can be connected to other sensors (tach/gpio/hot/etc), which
178 * makes the bookkeeping tricky.
179 *
180 * Some, but not all, of these voltages have low/high limits.
181 */
182 #define ADT7462_VOLT_COUNT 13
183
184 #define ADT7462_VENDOR 0x41
185 #define ADT7462_DEVICE 0x62
186 /* datasheet only mentions a revision 4 */
187 #define ADT7462_REVISION 0x04
188
189 /* How often do we reread sensors values? (In jiffies) */
190 #define SENSOR_REFRESH_INTERVAL (2 * HZ)
191
192 /* How often do we reread sensor limit values? (In jiffies) */
193 #define LIMIT_REFRESH_INTERVAL (60 * HZ)
194
195 /* datasheet says to divide this number by the fan reading to get fan rpm */
196 #define FAN_PERIOD_TO_RPM(x) ((90000 * 60) / (x))
197 #define FAN_RPM_TO_PERIOD FAN_PERIOD_TO_RPM
198 #define FAN_PERIOD_INVALID 65535
199 #define FAN_DATA_VALID(x) ((x) && (x) != FAN_PERIOD_INVALID)
200
201 #define MASK_AND_SHIFT(value, prefix) \
202 (((value) & prefix##_MASK) >> prefix##_SHIFT)
203
204 struct adt7462_data {
205 struct i2c_client *client;
206 struct mutex lock;
207 char sensors_valid;
208 char limits_valid;
209 unsigned long sensors_last_updated; /* In jiffies */
210 unsigned long limits_last_updated; /* In jiffies */
211
212 u8 temp[ADT7462_TEMP_COUNT];
213 /* bits 6-7 are quarter pieces of temp */
214 u8 temp_frac[ADT7462_TEMP_COUNT];
215 u8 temp_min[ADT7462_TEMP_COUNT];
216 u8 temp_max[ADT7462_TEMP_COUNT];
217 u16 fan[ADT7462_FAN_COUNT];
218 u8 fan_enabled;
219 u8 fan_min[ADT7462_FAN_COUNT];
220 u8 cfg2;
221 u8 pwm[ADT7462_PWM_COUNT];
222 u8 pin_cfg[ADT7462_PIN_CFG_REG_COUNT];
223 u8 voltages[ADT7462_VOLT_COUNT];
224 u8 volt_max[ADT7462_VOLT_COUNT];
225 u8 volt_min[ADT7462_VOLT_COUNT];
226 u8 pwm_min[ADT7462_PWM_COUNT];
227 u8 pwm_tmin[ADT7462_PWM_COUNT];
228 u8 pwm_trange[ADT7462_PWM_COUNT];
229 u8 pwm_max; /* only one per chip */
230 u8 pwm_cfg[ADT7462_PWM_COUNT];
231 u8 alarms[ADT7462_ALARM_REG_COUNT];
232 };
233
234 /*
235 * 16-bit registers on the ADT7462 are low-byte first. The data sheet says
236 * that the low byte must be read before the high byte.
237 */
adt7462_read_word_data(struct i2c_client * client,u8 reg)238 static inline int adt7462_read_word_data(struct i2c_client *client, u8 reg)
239 {
240 u16 foo;
241 foo = i2c_smbus_read_byte_data(client, reg);
242 foo |= ((u16)i2c_smbus_read_byte_data(client, reg + 1) << 8);
243 return foo;
244 }
245
246 /* For some reason these registers are not contiguous. */
ADT7462_REG_FAN(int fan)247 static int ADT7462_REG_FAN(int fan)
248 {
249 if (fan < 4)
250 return ADT7462_REG_FAN_BASE_ADDR + (2 * fan);
251 return ADT7462_REG_FAN2_BASE_ADDR + (2 * (fan - 4));
252 }
253
254 /* Voltage registers are scattered everywhere */
ADT7462_REG_VOLT_MAX(struct adt7462_data * data,int which)255 static int ADT7462_REG_VOLT_MAX(struct adt7462_data *data, int which)
256 {
257 switch (which) {
258 case 0:
259 if (!(data->pin_cfg[0] & ADT7462_PIN7_INPUT))
260 return 0x7C;
261 break;
262 case 1:
263 return 0x69;
264 case 2:
265 if (!(data->pin_cfg[1] & ADT7462_PIN22_INPUT))
266 return 0x7F;
267 break;
268 case 3:
269 if (!(data->pin_cfg[1] & ADT7462_PIN21_INPUT))
270 return 0x7E;
271 break;
272 case 4:
273 if (!(data->pin_cfg[0] & ADT7462_DIODE3_INPUT))
274 return 0x4B;
275 break;
276 case 5:
277 if (!(data->pin_cfg[0] & ADT7462_DIODE1_INPUT))
278 return 0x49;
279 break;
280 case 6:
281 if (!(data->pin_cfg[1] & ADT7462_PIN13_INPUT))
282 return 0x68;
283 break;
284 case 7:
285 if (!(data->pin_cfg[1] & ADT7462_PIN8_INPUT))
286 return 0x7D;
287 break;
288 case 8:
289 if (!(data->pin_cfg[2] & ADT7462_PIN26_VOLT_INPUT))
290 return 0x6C;
291 break;
292 case 9:
293 if (!(data->pin_cfg[2] & ADT7462_PIN25_VOLT_INPUT))
294 return 0x6B;
295 break;
296 case 10:
297 return 0x6A;
298 case 11:
299 if (data->pin_cfg[3] >> ADT7462_PIN28_SHIFT ==
300 ADT7462_PIN28_VOLT &&
301 !(data->pin_cfg[0] & ADT7462_VID_INPUT))
302 return 0x50;
303 break;
304 case 12:
305 if (data->pin_cfg[3] >> ADT7462_PIN28_SHIFT ==
306 ADT7462_PIN28_VOLT &&
307 !(data->pin_cfg[0] & ADT7462_VID_INPUT))
308 return 0x4C;
309 break;
310 }
311 return 0;
312 }
313
ADT7462_REG_VOLT_MIN(struct adt7462_data * data,int which)314 static int ADT7462_REG_VOLT_MIN(struct adt7462_data *data, int which)
315 {
316 switch (which) {
317 case 0:
318 if (!(data->pin_cfg[0] & ADT7462_PIN7_INPUT))
319 return 0x6D;
320 break;
321 case 1:
322 return 0x72;
323 case 2:
324 if (!(data->pin_cfg[1] & ADT7462_PIN22_INPUT))
325 return 0x6F;
326 break;
327 case 3:
328 if (!(data->pin_cfg[1] & ADT7462_PIN21_INPUT))
329 return 0x71;
330 break;
331 case 4:
332 if (!(data->pin_cfg[0] & ADT7462_DIODE3_INPUT))
333 return 0x47;
334 break;
335 case 5:
336 if (!(data->pin_cfg[0] & ADT7462_DIODE1_INPUT))
337 return 0x45;
338 break;
339 case 6:
340 if (!(data->pin_cfg[1] & ADT7462_PIN13_INPUT))
341 return 0x70;
342 break;
343 case 7:
344 if (!(data->pin_cfg[1] & ADT7462_PIN8_INPUT))
345 return 0x6E;
346 break;
347 case 8:
348 if (!(data->pin_cfg[2] & ADT7462_PIN26_VOLT_INPUT))
349 return 0x75;
350 break;
351 case 9:
352 if (!(data->pin_cfg[2] & ADT7462_PIN25_VOLT_INPUT))
353 return 0x74;
354 break;
355 case 10:
356 return 0x73;
357 case 11:
358 if (data->pin_cfg[3] >> ADT7462_PIN28_SHIFT ==
359 ADT7462_PIN28_VOLT &&
360 !(data->pin_cfg[0] & ADT7462_VID_INPUT))
361 return 0x76;
362 break;
363 case 12:
364 if (data->pin_cfg[3] >> ADT7462_PIN28_SHIFT ==
365 ADT7462_PIN28_VOLT &&
366 !(data->pin_cfg[0] & ADT7462_VID_INPUT))
367 return 0x77;
368 break;
369 }
370 return 0;
371 }
372
ADT7462_REG_VOLT(struct adt7462_data * data,int which)373 static int ADT7462_REG_VOLT(struct adt7462_data *data, int which)
374 {
375 switch (which) {
376 case 0:
377 if (!(data->pin_cfg[0] & ADT7462_PIN7_INPUT))
378 return 0xA3;
379 break;
380 case 1:
381 return 0x90;
382 case 2:
383 if (!(data->pin_cfg[1] & ADT7462_PIN22_INPUT))
384 return 0xA9;
385 break;
386 case 3:
387 if (!(data->pin_cfg[1] & ADT7462_PIN21_INPUT))
388 return 0xA7;
389 break;
390 case 4:
391 if (!(data->pin_cfg[0] & ADT7462_DIODE3_INPUT))
392 return 0x8F;
393 break;
394 case 5:
395 if (!(data->pin_cfg[0] & ADT7462_DIODE1_INPUT))
396 return 0x8B;
397 break;
398 case 6:
399 if (!(data->pin_cfg[1] & ADT7462_PIN13_INPUT))
400 return 0x96;
401 break;
402 case 7:
403 if (!(data->pin_cfg[1] & ADT7462_PIN8_INPUT))
404 return 0xA5;
405 break;
406 case 8:
407 if (!(data->pin_cfg[2] & ADT7462_PIN26_VOLT_INPUT))
408 return 0x93;
409 break;
410 case 9:
411 if (!(data->pin_cfg[2] & ADT7462_PIN25_VOLT_INPUT))
412 return 0x92;
413 break;
414 case 10:
415 return 0x91;
416 case 11:
417 if (data->pin_cfg[3] >> ADT7462_PIN28_SHIFT ==
418 ADT7462_PIN28_VOLT &&
419 !(data->pin_cfg[0] & ADT7462_VID_INPUT))
420 return 0x94;
421 break;
422 case 12:
423 if (data->pin_cfg[3] >> ADT7462_PIN28_SHIFT ==
424 ADT7462_PIN28_VOLT &&
425 !(data->pin_cfg[0] & ADT7462_VID_INPUT))
426 return 0x95;
427 break;
428 }
429 return -ENODEV;
430 }
431
432 /* Provide labels for sysfs */
voltage_label(struct adt7462_data * data,int which)433 static const char *voltage_label(struct adt7462_data *data, int which)
434 {
435 switch (which) {
436 case 0:
437 if (!(data->pin_cfg[0] & ADT7462_PIN7_INPUT))
438 return "+12V1";
439 break;
440 case 1:
441 switch (MASK_AND_SHIFT(data->pin_cfg[1], ADT7462_PIN23)) {
442 case 0:
443 return "Vccp1";
444 case 1:
445 return "+2.5V";
446 case 2:
447 return "+1.8V";
448 case 3:
449 return "+1.5V";
450 }
451 case 2:
452 if (!(data->pin_cfg[1] & ADT7462_PIN22_INPUT))
453 return "+12V3";
454 break;
455 case 3:
456 if (!(data->pin_cfg[1] & ADT7462_PIN21_INPUT))
457 return "+5V";
458 break;
459 case 4:
460 if (!(data->pin_cfg[0] & ADT7462_DIODE3_INPUT)) {
461 if (data->pin_cfg[1] & ADT7462_PIN19_INPUT)
462 return "+0.9V";
463 return "+1.25V";
464 }
465 break;
466 case 5:
467 if (!(data->pin_cfg[0] & ADT7462_DIODE1_INPUT)) {
468 if (data->pin_cfg[1] & ADT7462_PIN19_INPUT)
469 return "+1.8V";
470 return "+2.5V";
471 }
472 break;
473 case 6:
474 if (!(data->pin_cfg[1] & ADT7462_PIN13_INPUT))
475 return "+3.3V";
476 break;
477 case 7:
478 if (!(data->pin_cfg[1] & ADT7462_PIN8_INPUT))
479 return "+12V2";
480 break;
481 case 8:
482 switch (MASK_AND_SHIFT(data->pin_cfg[2], ADT7462_PIN26)) {
483 case 0:
484 return "Vbatt";
485 case 1:
486 return "FSB_Vtt";
487 }
488 break;
489 case 9:
490 switch (MASK_AND_SHIFT(data->pin_cfg[2], ADT7462_PIN25)) {
491 case 0:
492 return "+3.3V";
493 case 1:
494 return "+1.2V1";
495 }
496 break;
497 case 10:
498 switch (MASK_AND_SHIFT(data->pin_cfg[2], ADT7462_PIN24)) {
499 case 0:
500 return "Vccp2";
501 case 1:
502 return "+2.5V";
503 case 2:
504 return "+1.8V";
505 case 3:
506 return "+1.5";
507 }
508 case 11:
509 if (data->pin_cfg[3] >> ADT7462_PIN28_SHIFT ==
510 ADT7462_PIN28_VOLT &&
511 !(data->pin_cfg[0] & ADT7462_VID_INPUT))
512 return "+1.5V ICH";
513 break;
514 case 12:
515 if (data->pin_cfg[3] >> ADT7462_PIN28_SHIFT ==
516 ADT7462_PIN28_VOLT &&
517 !(data->pin_cfg[0] & ADT7462_VID_INPUT))
518 return "+1.5V 3GPIO";
519 break;
520 }
521 return "N/A";
522 }
523
524 /* Multipliers are actually in uV, not mV. */
voltage_multiplier(struct adt7462_data * data,int which)525 static int voltage_multiplier(struct adt7462_data *data, int which)
526 {
527 switch (which) {
528 case 0:
529 if (!(data->pin_cfg[0] & ADT7462_PIN7_INPUT))
530 return 62500;
531 break;
532 case 1:
533 switch (MASK_AND_SHIFT(data->pin_cfg[1], ADT7462_PIN23)) {
534 case 0:
535 if (data->pin_cfg[0] & ADT7462_VID_INPUT)
536 return 12500;
537 return 6250;
538 case 1:
539 return 13000;
540 case 2:
541 return 9400;
542 case 3:
543 return 7800;
544 }
545 case 2:
546 if (!(data->pin_cfg[1] & ADT7462_PIN22_INPUT))
547 return 62500;
548 break;
549 case 3:
550 if (!(data->pin_cfg[1] & ADT7462_PIN21_INPUT))
551 return 26000;
552 break;
553 case 4:
554 if (!(data->pin_cfg[0] & ADT7462_DIODE3_INPUT)) {
555 if (data->pin_cfg[1] & ADT7462_PIN19_INPUT)
556 return 4690;
557 return 6500;
558 }
559 break;
560 case 5:
561 if (!(data->pin_cfg[0] & ADT7462_DIODE1_INPUT)) {
562 if (data->pin_cfg[1] & ADT7462_PIN15_INPUT)
563 return 9400;
564 return 13000;
565 }
566 break;
567 case 6:
568 if (!(data->pin_cfg[1] & ADT7462_PIN13_INPUT))
569 return 17200;
570 break;
571 case 7:
572 if (!(data->pin_cfg[1] & ADT7462_PIN8_INPUT))
573 return 62500;
574 break;
575 case 8:
576 switch (MASK_AND_SHIFT(data->pin_cfg[2], ADT7462_PIN26)) {
577 case 0:
578 return 15600;
579 case 1:
580 return 6250;
581 }
582 break;
583 case 9:
584 switch (MASK_AND_SHIFT(data->pin_cfg[2], ADT7462_PIN25)) {
585 case 0:
586 return 17200;
587 case 1:
588 return 6250;
589 }
590 break;
591 case 10:
592 switch (MASK_AND_SHIFT(data->pin_cfg[2], ADT7462_PIN24)) {
593 case 0:
594 return 6250;
595 case 1:
596 return 13000;
597 case 2:
598 return 9400;
599 case 3:
600 return 7800;
601 }
602 case 11:
603 case 12:
604 if (data->pin_cfg[3] >> ADT7462_PIN28_SHIFT ==
605 ADT7462_PIN28_VOLT &&
606 !(data->pin_cfg[0] & ADT7462_VID_INPUT))
607 return 7800;
608 }
609 return 0;
610 }
611
temp_enabled(struct adt7462_data * data,int which)612 static int temp_enabled(struct adt7462_data *data, int which)
613 {
614 switch (which) {
615 case 0:
616 case 2:
617 return 1;
618 case 1:
619 if (data->pin_cfg[0] & ADT7462_DIODE1_INPUT)
620 return 1;
621 break;
622 case 3:
623 if (data->pin_cfg[0] & ADT7462_DIODE3_INPUT)
624 return 1;
625 break;
626 }
627 return 0;
628 }
629
temp_label(struct adt7462_data * data,int which)630 static const char *temp_label(struct adt7462_data *data, int which)
631 {
632 switch (which) {
633 case 0:
634 return "local";
635 case 1:
636 if (data->pin_cfg[0] & ADT7462_DIODE1_INPUT)
637 return "remote1";
638 break;
639 case 2:
640 return "remote2";
641 case 3:
642 if (data->pin_cfg[0] & ADT7462_DIODE3_INPUT)
643 return "remote3";
644 break;
645 }
646 return "N/A";
647 }
648
649 /* Map Trange register values to mC */
650 #define NUM_TRANGE_VALUES 16
651 static const int trange_values[NUM_TRANGE_VALUES] = {
652 2000,
653 2500,
654 3300,
655 4000,
656 5000,
657 6700,
658 8000,
659 10000,
660 13300,
661 16000,
662 20000,
663 26700,
664 32000,
665 40000,
666 53300,
667 80000
668 };
669
find_trange_value(int trange)670 static int find_trange_value(int trange)
671 {
672 int i;
673
674 for (i = 0; i < NUM_TRANGE_VALUES; i++)
675 if (trange_values[i] == trange)
676 return i;
677
678 return -EINVAL;
679 }
680
adt7462_update_device(struct device * dev)681 static struct adt7462_data *adt7462_update_device(struct device *dev)
682 {
683 struct adt7462_data *data = dev_get_drvdata(dev);
684 struct i2c_client *client = data->client;
685 unsigned long local_jiffies = jiffies;
686 int i;
687
688 mutex_lock(&data->lock);
689 if (time_before(local_jiffies, data->sensors_last_updated +
690 SENSOR_REFRESH_INTERVAL)
691 && data->sensors_valid)
692 goto no_sensor_update;
693
694 for (i = 0; i < ADT7462_TEMP_COUNT; i++) {
695 /*
696 * Reading the fractional register locks the integral
697 * register until both have been read.
698 */
699 data->temp_frac[i] = i2c_smbus_read_byte_data(client,
700 ADT7462_TEMP_REG(i));
701 data->temp[i] = i2c_smbus_read_byte_data(client,
702 ADT7462_TEMP_REG(i) + 1);
703 }
704
705 for (i = 0; i < ADT7462_FAN_COUNT; i++)
706 data->fan[i] = adt7462_read_word_data(client,
707 ADT7462_REG_FAN(i));
708
709 data->fan_enabled = i2c_smbus_read_byte_data(client,
710 ADT7462_REG_FAN_ENABLE);
711
712 for (i = 0; i < ADT7462_PWM_COUNT; i++)
713 data->pwm[i] = i2c_smbus_read_byte_data(client,
714 ADT7462_REG_PWM(i));
715
716 for (i = 0; i < ADT7462_PIN_CFG_REG_COUNT; i++)
717 data->pin_cfg[i] = i2c_smbus_read_byte_data(client,
718 ADT7462_REG_PIN_CFG(i));
719
720 for (i = 0; i < ADT7462_VOLT_COUNT; i++) {
721 int reg = ADT7462_REG_VOLT(data, i);
722 if (!reg)
723 data->voltages[i] = 0;
724 else
725 data->voltages[i] = i2c_smbus_read_byte_data(client,
726 reg);
727 }
728
729 data->alarms[0] = i2c_smbus_read_byte_data(client, ADT7462_REG_ALARM1);
730 data->alarms[1] = i2c_smbus_read_byte_data(client, ADT7462_REG_ALARM2);
731 data->alarms[2] = i2c_smbus_read_byte_data(client, ADT7462_REG_ALARM3);
732 data->alarms[3] = i2c_smbus_read_byte_data(client, ADT7462_REG_ALARM4);
733
734 data->sensors_last_updated = local_jiffies;
735 data->sensors_valid = 1;
736
737 no_sensor_update:
738 if (time_before(local_jiffies, data->limits_last_updated +
739 LIMIT_REFRESH_INTERVAL)
740 && data->limits_valid)
741 goto out;
742
743 for (i = 0; i < ADT7462_TEMP_COUNT; i++) {
744 data->temp_min[i] = i2c_smbus_read_byte_data(client,
745 ADT7462_TEMP_MIN_REG(i));
746 data->temp_max[i] = i2c_smbus_read_byte_data(client,
747 ADT7462_TEMP_MAX_REG(i));
748 }
749
750 for (i = 0; i < ADT7462_FAN_COUNT; i++)
751 data->fan_min[i] = i2c_smbus_read_byte_data(client,
752 ADT7462_REG_FAN_MIN(i));
753
754 for (i = 0; i < ADT7462_VOLT_COUNT; i++) {
755 int reg = ADT7462_REG_VOLT_MAX(data, i);
756 data->volt_max[i] =
757 (reg ? i2c_smbus_read_byte_data(client, reg) : 0);
758
759 reg = ADT7462_REG_VOLT_MIN(data, i);
760 data->volt_min[i] =
761 (reg ? i2c_smbus_read_byte_data(client, reg) : 0);
762 }
763
764 for (i = 0; i < ADT7462_PWM_COUNT; i++) {
765 data->pwm_min[i] = i2c_smbus_read_byte_data(client,
766 ADT7462_REG_PWM_MIN(i));
767 data->pwm_tmin[i] = i2c_smbus_read_byte_data(client,
768 ADT7462_REG_PWM_TMIN(i));
769 data->pwm_trange[i] = i2c_smbus_read_byte_data(client,
770 ADT7462_REG_PWM_TRANGE(i));
771 data->pwm_cfg[i] = i2c_smbus_read_byte_data(client,
772 ADT7462_REG_PWM_CFG(i));
773 }
774
775 data->pwm_max = i2c_smbus_read_byte_data(client, ADT7462_REG_PWM_MAX);
776
777 data->cfg2 = i2c_smbus_read_byte_data(client, ADT7462_REG_CFG2);
778
779 data->limits_last_updated = local_jiffies;
780 data->limits_valid = 1;
781
782 out:
783 mutex_unlock(&data->lock);
784 return data;
785 }
786
show_temp_min(struct device * dev,struct device_attribute * devattr,char * buf)787 static ssize_t show_temp_min(struct device *dev,
788 struct device_attribute *devattr,
789 char *buf)
790 {
791 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
792 struct adt7462_data *data = adt7462_update_device(dev);
793
794 if (!temp_enabled(data, attr->index))
795 return sprintf(buf, "0\n");
796
797 return sprintf(buf, "%d\n", 1000 * (data->temp_min[attr->index] - 64));
798 }
799
set_temp_min(struct device * dev,struct device_attribute * devattr,const char * buf,size_t count)800 static ssize_t set_temp_min(struct device *dev,
801 struct device_attribute *devattr,
802 const char *buf,
803 size_t count)
804 {
805 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
806 struct adt7462_data *data = dev_get_drvdata(dev);
807 struct i2c_client *client = data->client;
808 long temp;
809
810 if (kstrtol(buf, 10, &temp) || !temp_enabled(data, attr->index))
811 return -EINVAL;
812
813 temp = DIV_ROUND_CLOSEST(temp, 1000) + 64;
814 temp = clamp_val(temp, 0, 255);
815
816 mutex_lock(&data->lock);
817 data->temp_min[attr->index] = temp;
818 i2c_smbus_write_byte_data(client, ADT7462_TEMP_MIN_REG(attr->index),
819 temp);
820 mutex_unlock(&data->lock);
821
822 return count;
823 }
824
show_temp_max(struct device * dev,struct device_attribute * devattr,char * buf)825 static ssize_t show_temp_max(struct device *dev,
826 struct device_attribute *devattr,
827 char *buf)
828 {
829 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
830 struct adt7462_data *data = adt7462_update_device(dev);
831
832 if (!temp_enabled(data, attr->index))
833 return sprintf(buf, "0\n");
834
835 return sprintf(buf, "%d\n", 1000 * (data->temp_max[attr->index] - 64));
836 }
837
set_temp_max(struct device * dev,struct device_attribute * devattr,const char * buf,size_t count)838 static ssize_t set_temp_max(struct device *dev,
839 struct device_attribute *devattr,
840 const char *buf,
841 size_t count)
842 {
843 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
844 struct adt7462_data *data = dev_get_drvdata(dev);
845 struct i2c_client *client = data->client;
846 long temp;
847
848 if (kstrtol(buf, 10, &temp) || !temp_enabled(data, attr->index))
849 return -EINVAL;
850
851 temp = DIV_ROUND_CLOSEST(temp, 1000) + 64;
852 temp = clamp_val(temp, 0, 255);
853
854 mutex_lock(&data->lock);
855 data->temp_max[attr->index] = temp;
856 i2c_smbus_write_byte_data(client, ADT7462_TEMP_MAX_REG(attr->index),
857 temp);
858 mutex_unlock(&data->lock);
859
860 return count;
861 }
862
show_temp(struct device * dev,struct device_attribute * devattr,char * buf)863 static ssize_t show_temp(struct device *dev, struct device_attribute *devattr,
864 char *buf)
865 {
866 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
867 struct adt7462_data *data = adt7462_update_device(dev);
868 u8 frac = data->temp_frac[attr->index] >> TEMP_FRAC_OFFSET;
869
870 if (!temp_enabled(data, attr->index))
871 return sprintf(buf, "0\n");
872
873 return sprintf(buf, "%d\n", 1000 * (data->temp[attr->index] - 64) +
874 250 * frac);
875 }
876
show_temp_label(struct device * dev,struct device_attribute * devattr,char * buf)877 static ssize_t show_temp_label(struct device *dev,
878 struct device_attribute *devattr,
879 char *buf)
880 {
881 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
882 struct adt7462_data *data = adt7462_update_device(dev);
883
884 return sprintf(buf, "%s\n", temp_label(data, attr->index));
885 }
886
show_volt_max(struct device * dev,struct device_attribute * devattr,char * buf)887 static ssize_t show_volt_max(struct device *dev,
888 struct device_attribute *devattr,
889 char *buf)
890 {
891 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
892 struct adt7462_data *data = adt7462_update_device(dev);
893 int x = voltage_multiplier(data, attr->index);
894
895 x *= data->volt_max[attr->index];
896 x /= 1000; /* convert from uV to mV */
897
898 return sprintf(buf, "%d\n", x);
899 }
900
set_volt_max(struct device * dev,struct device_attribute * devattr,const char * buf,size_t count)901 static ssize_t set_volt_max(struct device *dev,
902 struct device_attribute *devattr,
903 const char *buf,
904 size_t count)
905 {
906 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
907 struct adt7462_data *data = dev_get_drvdata(dev);
908 struct i2c_client *client = data->client;
909 int x = voltage_multiplier(data, attr->index);
910 long temp;
911
912 if (kstrtol(buf, 10, &temp) || !x)
913 return -EINVAL;
914
915 temp *= 1000; /* convert mV to uV */
916 temp = DIV_ROUND_CLOSEST(temp, x);
917 temp = clamp_val(temp, 0, 255);
918
919 mutex_lock(&data->lock);
920 data->volt_max[attr->index] = temp;
921 i2c_smbus_write_byte_data(client,
922 ADT7462_REG_VOLT_MAX(data, attr->index),
923 temp);
924 mutex_unlock(&data->lock);
925
926 return count;
927 }
928
show_volt_min(struct device * dev,struct device_attribute * devattr,char * buf)929 static ssize_t show_volt_min(struct device *dev,
930 struct device_attribute *devattr,
931 char *buf)
932 {
933 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
934 struct adt7462_data *data = adt7462_update_device(dev);
935 int x = voltage_multiplier(data, attr->index);
936
937 x *= data->volt_min[attr->index];
938 x /= 1000; /* convert from uV to mV */
939
940 return sprintf(buf, "%d\n", x);
941 }
942
set_volt_min(struct device * dev,struct device_attribute * devattr,const char * buf,size_t count)943 static ssize_t set_volt_min(struct device *dev,
944 struct device_attribute *devattr,
945 const char *buf,
946 size_t count)
947 {
948 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
949 struct adt7462_data *data = dev_get_drvdata(dev);
950 struct i2c_client *client = data->client;
951 int x = voltage_multiplier(data, attr->index);
952 long temp;
953
954 if (kstrtol(buf, 10, &temp) || !x)
955 return -EINVAL;
956
957 temp *= 1000; /* convert mV to uV */
958 temp = DIV_ROUND_CLOSEST(temp, x);
959 temp = clamp_val(temp, 0, 255);
960
961 mutex_lock(&data->lock);
962 data->volt_min[attr->index] = temp;
963 i2c_smbus_write_byte_data(client,
964 ADT7462_REG_VOLT_MIN(data, attr->index),
965 temp);
966 mutex_unlock(&data->lock);
967
968 return count;
969 }
970
show_voltage(struct device * dev,struct device_attribute * devattr,char * buf)971 static ssize_t show_voltage(struct device *dev,
972 struct device_attribute *devattr,
973 char *buf)
974 {
975 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
976 struct adt7462_data *data = adt7462_update_device(dev);
977 int x = voltage_multiplier(data, attr->index);
978
979 x *= data->voltages[attr->index];
980 x /= 1000; /* convert from uV to mV */
981
982 return sprintf(buf, "%d\n", x);
983 }
984
show_voltage_label(struct device * dev,struct device_attribute * devattr,char * buf)985 static ssize_t show_voltage_label(struct device *dev,
986 struct device_attribute *devattr,
987 char *buf)
988 {
989 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
990 struct adt7462_data *data = adt7462_update_device(dev);
991
992 return sprintf(buf, "%s\n", voltage_label(data, attr->index));
993 }
994
show_alarm(struct device * dev,struct device_attribute * devattr,char * buf)995 static ssize_t show_alarm(struct device *dev,
996 struct device_attribute *devattr,
997 char *buf)
998 {
999 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
1000 struct adt7462_data *data = adt7462_update_device(dev);
1001 int reg = attr->index >> ADT7462_ALARM_REG_SHIFT;
1002 int mask = attr->index & ADT7462_ALARM_FLAG_MASK;
1003
1004 if (data->alarms[reg] & mask)
1005 return sprintf(buf, "1\n");
1006 else
1007 return sprintf(buf, "0\n");
1008 }
1009
fan_enabled(struct adt7462_data * data,int fan)1010 static int fan_enabled(struct adt7462_data *data, int fan)
1011 {
1012 return data->fan_enabled & (1 << fan);
1013 }
1014
show_fan_min(struct device * dev,struct device_attribute * devattr,char * buf)1015 static ssize_t show_fan_min(struct device *dev,
1016 struct device_attribute *devattr,
1017 char *buf)
1018 {
1019 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
1020 struct adt7462_data *data = adt7462_update_device(dev);
1021 u16 temp;
1022
1023 /* Only the MSB of the min fan period is stored... */
1024 temp = data->fan_min[attr->index];
1025 temp <<= 8;
1026
1027 if (!fan_enabled(data, attr->index) ||
1028 !FAN_DATA_VALID(temp))
1029 return sprintf(buf, "0\n");
1030
1031 return sprintf(buf, "%d\n", FAN_PERIOD_TO_RPM(temp));
1032 }
1033
set_fan_min(struct device * dev,struct device_attribute * devattr,const char * buf,size_t count)1034 static ssize_t set_fan_min(struct device *dev,
1035 struct device_attribute *devattr,
1036 const char *buf, size_t count)
1037 {
1038 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
1039 struct adt7462_data *data = dev_get_drvdata(dev);
1040 struct i2c_client *client = data->client;
1041 long temp;
1042
1043 if (kstrtol(buf, 10, &temp) || !temp ||
1044 !fan_enabled(data, attr->index))
1045 return -EINVAL;
1046
1047 temp = FAN_RPM_TO_PERIOD(temp);
1048 temp >>= 8;
1049 temp = clamp_val(temp, 1, 255);
1050
1051 mutex_lock(&data->lock);
1052 data->fan_min[attr->index] = temp;
1053 i2c_smbus_write_byte_data(client, ADT7462_REG_FAN_MIN(attr->index),
1054 temp);
1055 mutex_unlock(&data->lock);
1056
1057 return count;
1058 }
1059
show_fan(struct device * dev,struct device_attribute * devattr,char * buf)1060 static ssize_t show_fan(struct device *dev, struct device_attribute *devattr,
1061 char *buf)
1062 {
1063 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
1064 struct adt7462_data *data = adt7462_update_device(dev);
1065
1066 if (!fan_enabled(data, attr->index) ||
1067 !FAN_DATA_VALID(data->fan[attr->index]))
1068 return sprintf(buf, "0\n");
1069
1070 return sprintf(buf, "%d\n",
1071 FAN_PERIOD_TO_RPM(data->fan[attr->index]));
1072 }
1073
show_force_pwm_max(struct device * dev,struct device_attribute * devattr,char * buf)1074 static ssize_t show_force_pwm_max(struct device *dev,
1075 struct device_attribute *devattr,
1076 char *buf)
1077 {
1078 struct adt7462_data *data = adt7462_update_device(dev);
1079 return sprintf(buf, "%d\n", (data->cfg2 & ADT7462_FSPD_MASK ? 1 : 0));
1080 }
1081
set_force_pwm_max(struct device * dev,struct device_attribute * devattr,const char * buf,size_t count)1082 static ssize_t set_force_pwm_max(struct device *dev,
1083 struct device_attribute *devattr,
1084 const char *buf,
1085 size_t count)
1086 {
1087 struct adt7462_data *data = dev_get_drvdata(dev);
1088 struct i2c_client *client = data->client;
1089 long temp;
1090 u8 reg;
1091
1092 if (kstrtol(buf, 10, &temp))
1093 return -EINVAL;
1094
1095 mutex_lock(&data->lock);
1096 reg = i2c_smbus_read_byte_data(client, ADT7462_REG_CFG2);
1097 if (temp)
1098 reg |= ADT7462_FSPD_MASK;
1099 else
1100 reg &= ~ADT7462_FSPD_MASK;
1101 data->cfg2 = reg;
1102 i2c_smbus_write_byte_data(client, ADT7462_REG_CFG2, reg);
1103 mutex_unlock(&data->lock);
1104
1105 return count;
1106 }
1107
show_pwm(struct device * dev,struct device_attribute * devattr,char * buf)1108 static ssize_t show_pwm(struct device *dev, struct device_attribute *devattr,
1109 char *buf)
1110 {
1111 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
1112 struct adt7462_data *data = adt7462_update_device(dev);
1113 return sprintf(buf, "%d\n", data->pwm[attr->index]);
1114 }
1115
set_pwm(struct device * dev,struct device_attribute * devattr,const char * buf,size_t count)1116 static ssize_t set_pwm(struct device *dev, struct device_attribute *devattr,
1117 const char *buf, size_t count)
1118 {
1119 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
1120 struct adt7462_data *data = dev_get_drvdata(dev);
1121 struct i2c_client *client = data->client;
1122 long temp;
1123
1124 if (kstrtol(buf, 10, &temp))
1125 return -EINVAL;
1126
1127 temp = clamp_val(temp, 0, 255);
1128
1129 mutex_lock(&data->lock);
1130 data->pwm[attr->index] = temp;
1131 i2c_smbus_write_byte_data(client, ADT7462_REG_PWM(attr->index), temp);
1132 mutex_unlock(&data->lock);
1133
1134 return count;
1135 }
1136
show_pwm_max(struct device * dev,struct device_attribute * devattr,char * buf)1137 static ssize_t show_pwm_max(struct device *dev,
1138 struct device_attribute *devattr,
1139 char *buf)
1140 {
1141 struct adt7462_data *data = adt7462_update_device(dev);
1142 return sprintf(buf, "%d\n", data->pwm_max);
1143 }
1144
set_pwm_max(struct device * dev,struct device_attribute * devattr,const char * buf,size_t count)1145 static ssize_t set_pwm_max(struct device *dev,
1146 struct device_attribute *devattr,
1147 const char *buf,
1148 size_t count)
1149 {
1150 struct adt7462_data *data = dev_get_drvdata(dev);
1151 struct i2c_client *client = data->client;
1152 long temp;
1153
1154 if (kstrtol(buf, 10, &temp))
1155 return -EINVAL;
1156
1157 temp = clamp_val(temp, 0, 255);
1158
1159 mutex_lock(&data->lock);
1160 data->pwm_max = temp;
1161 i2c_smbus_write_byte_data(client, ADT7462_REG_PWM_MAX, temp);
1162 mutex_unlock(&data->lock);
1163
1164 return count;
1165 }
1166
show_pwm_min(struct device * dev,struct device_attribute * devattr,char * buf)1167 static ssize_t show_pwm_min(struct device *dev,
1168 struct device_attribute *devattr,
1169 char *buf)
1170 {
1171 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
1172 struct adt7462_data *data = adt7462_update_device(dev);
1173 return sprintf(buf, "%d\n", data->pwm_min[attr->index]);
1174 }
1175
set_pwm_min(struct device * dev,struct device_attribute * devattr,const char * buf,size_t count)1176 static ssize_t set_pwm_min(struct device *dev,
1177 struct device_attribute *devattr,
1178 const char *buf,
1179 size_t count)
1180 {
1181 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
1182 struct adt7462_data *data = dev_get_drvdata(dev);
1183 struct i2c_client *client = data->client;
1184 long temp;
1185
1186 if (kstrtol(buf, 10, &temp))
1187 return -EINVAL;
1188
1189 temp = clamp_val(temp, 0, 255);
1190
1191 mutex_lock(&data->lock);
1192 data->pwm_min[attr->index] = temp;
1193 i2c_smbus_write_byte_data(client, ADT7462_REG_PWM_MIN(attr->index),
1194 temp);
1195 mutex_unlock(&data->lock);
1196
1197 return count;
1198 }
1199
show_pwm_hyst(struct device * dev,struct device_attribute * devattr,char * buf)1200 static ssize_t show_pwm_hyst(struct device *dev,
1201 struct device_attribute *devattr,
1202 char *buf)
1203 {
1204 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
1205 struct adt7462_data *data = adt7462_update_device(dev);
1206 return sprintf(buf, "%d\n", 1000 *
1207 (data->pwm_trange[attr->index] & ADT7462_PWM_HYST_MASK));
1208 }
1209
set_pwm_hyst(struct device * dev,struct device_attribute * devattr,const char * buf,size_t count)1210 static ssize_t set_pwm_hyst(struct device *dev,
1211 struct device_attribute *devattr,
1212 const char *buf,
1213 size_t count)
1214 {
1215 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
1216 struct adt7462_data *data = dev_get_drvdata(dev);
1217 struct i2c_client *client = data->client;
1218 long temp;
1219
1220 if (kstrtol(buf, 10, &temp))
1221 return -EINVAL;
1222
1223 temp = DIV_ROUND_CLOSEST(temp, 1000);
1224 temp = clamp_val(temp, 0, 15);
1225
1226 /* package things up */
1227 temp &= ADT7462_PWM_HYST_MASK;
1228 temp |= data->pwm_trange[attr->index] & ADT7462_PWM_RANGE_MASK;
1229
1230 mutex_lock(&data->lock);
1231 data->pwm_trange[attr->index] = temp;
1232 i2c_smbus_write_byte_data(client, ADT7462_REG_PWM_TRANGE(attr->index),
1233 temp);
1234 mutex_unlock(&data->lock);
1235
1236 return count;
1237 }
1238
show_pwm_tmax(struct device * dev,struct device_attribute * devattr,char * buf)1239 static ssize_t show_pwm_tmax(struct device *dev,
1240 struct device_attribute *devattr,
1241 char *buf)
1242 {
1243 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
1244 struct adt7462_data *data = adt7462_update_device(dev);
1245
1246 /* tmax = tmin + trange */
1247 int trange = trange_values[data->pwm_trange[attr->index] >>
1248 ADT7462_PWM_RANGE_SHIFT];
1249 int tmin = (data->pwm_tmin[attr->index] - 64) * 1000;
1250
1251 return sprintf(buf, "%d\n", tmin + trange);
1252 }
1253
set_pwm_tmax(struct device * dev,struct device_attribute * devattr,const char * buf,size_t count)1254 static ssize_t set_pwm_tmax(struct device *dev,
1255 struct device_attribute *devattr,
1256 const char *buf,
1257 size_t count)
1258 {
1259 int temp;
1260 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
1261 struct adt7462_data *data = dev_get_drvdata(dev);
1262 struct i2c_client *client = data->client;
1263 int tmin, trange_value;
1264 long trange;
1265
1266 if (kstrtol(buf, 10, &trange))
1267 return -EINVAL;
1268
1269 /* trange = tmax - tmin */
1270 tmin = (data->pwm_tmin[attr->index] - 64) * 1000;
1271 trange_value = find_trange_value(trange - tmin);
1272 if (trange_value < 0)
1273 return trange_value;
1274
1275 temp = trange_value << ADT7462_PWM_RANGE_SHIFT;
1276 temp |= data->pwm_trange[attr->index] & ADT7462_PWM_HYST_MASK;
1277
1278 mutex_lock(&data->lock);
1279 data->pwm_trange[attr->index] = temp;
1280 i2c_smbus_write_byte_data(client, ADT7462_REG_PWM_TRANGE(attr->index),
1281 temp);
1282 mutex_unlock(&data->lock);
1283
1284 return count;
1285 }
1286
show_pwm_tmin(struct device * dev,struct device_attribute * devattr,char * buf)1287 static ssize_t show_pwm_tmin(struct device *dev,
1288 struct device_attribute *devattr,
1289 char *buf)
1290 {
1291 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
1292 struct adt7462_data *data = adt7462_update_device(dev);
1293 return sprintf(buf, "%d\n", 1000 * (data->pwm_tmin[attr->index] - 64));
1294 }
1295
set_pwm_tmin(struct device * dev,struct device_attribute * devattr,const char * buf,size_t count)1296 static ssize_t set_pwm_tmin(struct device *dev,
1297 struct device_attribute *devattr,
1298 const char *buf,
1299 size_t count)
1300 {
1301 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
1302 struct adt7462_data *data = dev_get_drvdata(dev);
1303 struct i2c_client *client = data->client;
1304 long temp;
1305
1306 if (kstrtol(buf, 10, &temp))
1307 return -EINVAL;
1308
1309 temp = DIV_ROUND_CLOSEST(temp, 1000) + 64;
1310 temp = clamp_val(temp, 0, 255);
1311
1312 mutex_lock(&data->lock);
1313 data->pwm_tmin[attr->index] = temp;
1314 i2c_smbus_write_byte_data(client, ADT7462_REG_PWM_TMIN(attr->index),
1315 temp);
1316 mutex_unlock(&data->lock);
1317
1318 return count;
1319 }
1320
show_pwm_auto(struct device * dev,struct device_attribute * devattr,char * buf)1321 static ssize_t show_pwm_auto(struct device *dev,
1322 struct device_attribute *devattr,
1323 char *buf)
1324 {
1325 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
1326 struct adt7462_data *data = adt7462_update_device(dev);
1327 int cfg = data->pwm_cfg[attr->index] >> ADT7462_PWM_CHANNEL_SHIFT;
1328
1329 switch (cfg) {
1330 case 4: /* off */
1331 return sprintf(buf, "0\n");
1332 case 7: /* manual */
1333 return sprintf(buf, "1\n");
1334 default: /* automatic */
1335 return sprintf(buf, "2\n");
1336 }
1337 }
1338
set_pwm_channel(struct i2c_client * client,struct adt7462_data * data,int which,int value)1339 static void set_pwm_channel(struct i2c_client *client,
1340 struct adt7462_data *data,
1341 int which,
1342 int value)
1343 {
1344 int temp = data->pwm_cfg[which] & ~ADT7462_PWM_CHANNEL_MASK;
1345 temp |= value << ADT7462_PWM_CHANNEL_SHIFT;
1346
1347 mutex_lock(&data->lock);
1348 data->pwm_cfg[which] = temp;
1349 i2c_smbus_write_byte_data(client, ADT7462_REG_PWM_CFG(which), temp);
1350 mutex_unlock(&data->lock);
1351 }
1352
set_pwm_auto(struct device * dev,struct device_attribute * devattr,const char * buf,size_t count)1353 static ssize_t set_pwm_auto(struct device *dev,
1354 struct device_attribute *devattr,
1355 const char *buf,
1356 size_t count)
1357 {
1358 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
1359 struct adt7462_data *data = dev_get_drvdata(dev);
1360 struct i2c_client *client = data->client;
1361 long temp;
1362
1363 if (kstrtol(buf, 10, &temp))
1364 return -EINVAL;
1365
1366 switch (temp) {
1367 case 0: /* off */
1368 set_pwm_channel(client, data, attr->index, 4);
1369 return count;
1370 case 1: /* manual */
1371 set_pwm_channel(client, data, attr->index, 7);
1372 return count;
1373 default:
1374 return -EINVAL;
1375 }
1376 }
1377
show_pwm_auto_temp(struct device * dev,struct device_attribute * devattr,char * buf)1378 static ssize_t show_pwm_auto_temp(struct device *dev,
1379 struct device_attribute *devattr,
1380 char *buf)
1381 {
1382 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
1383 struct adt7462_data *data = adt7462_update_device(dev);
1384 int channel = data->pwm_cfg[attr->index] >> ADT7462_PWM_CHANNEL_SHIFT;
1385
1386 switch (channel) {
1387 case 0: /* temp[1234] only */
1388 case 1:
1389 case 2:
1390 case 3:
1391 return sprintf(buf, "%d\n", (1 << channel));
1392 case 5: /* temp1 & temp4 */
1393 return sprintf(buf, "9\n");
1394 case 6:
1395 return sprintf(buf, "15\n");
1396 default:
1397 return sprintf(buf, "0\n");
1398 }
1399 }
1400
cvt_auto_temp(int input)1401 static int cvt_auto_temp(int input)
1402 {
1403 if (input == 0xF)
1404 return 6;
1405 if (input == 0x9)
1406 return 5;
1407 if (input < 1 || !is_power_of_2(input))
1408 return -EINVAL;
1409 return ilog2(input);
1410 }
1411
set_pwm_auto_temp(struct device * dev,struct device_attribute * devattr,const char * buf,size_t count)1412 static ssize_t set_pwm_auto_temp(struct device *dev,
1413 struct device_attribute *devattr,
1414 const char *buf,
1415 size_t count)
1416 {
1417 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
1418 struct adt7462_data *data = dev_get_drvdata(dev);
1419 struct i2c_client *client = data->client;
1420 long temp;
1421
1422 if (kstrtol(buf, 10, &temp))
1423 return -EINVAL;
1424
1425 temp = cvt_auto_temp(temp);
1426 if (temp < 0)
1427 return temp;
1428
1429 set_pwm_channel(client, data, attr->index, temp);
1430
1431 return count;
1432 }
1433
1434 static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp_max,
1435 set_temp_max, 0);
1436 static SENSOR_DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp_max,
1437 set_temp_max, 1);
1438 static SENSOR_DEVICE_ATTR(temp3_max, S_IWUSR | S_IRUGO, show_temp_max,
1439 set_temp_max, 2);
1440 static SENSOR_DEVICE_ATTR(temp4_max, S_IWUSR | S_IRUGO, show_temp_max,
1441 set_temp_max, 3);
1442
1443 static SENSOR_DEVICE_ATTR(temp1_min, S_IWUSR | S_IRUGO, show_temp_min,
1444 set_temp_min, 0);
1445 static SENSOR_DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_temp_min,
1446 set_temp_min, 1);
1447 static SENSOR_DEVICE_ATTR(temp3_min, S_IWUSR | S_IRUGO, show_temp_min,
1448 set_temp_min, 2);
1449 static SENSOR_DEVICE_ATTR(temp4_min, S_IWUSR | S_IRUGO, show_temp_min,
1450 set_temp_min, 3);
1451
1452 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0);
1453 static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1);
1454 static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 2);
1455 static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO, show_temp, NULL, 3);
1456
1457 static SENSOR_DEVICE_ATTR(temp1_label, S_IRUGO, show_temp_label, NULL, 0);
1458 static SENSOR_DEVICE_ATTR(temp2_label, S_IRUGO, show_temp_label, NULL, 1);
1459 static SENSOR_DEVICE_ATTR(temp3_label, S_IRUGO, show_temp_label, NULL, 2);
1460 static SENSOR_DEVICE_ATTR(temp4_label, S_IRUGO, show_temp_label, NULL, 3);
1461
1462 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL,
1463 ADT7462_ALARM1 | ADT7462_LT_ALARM);
1464 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL,
1465 ADT7462_ALARM1 | ADT7462_R1T_ALARM);
1466 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL,
1467 ADT7462_ALARM1 | ADT7462_R2T_ALARM);
1468 static SENSOR_DEVICE_ATTR(temp4_alarm, S_IRUGO, show_alarm, NULL,
1469 ADT7462_ALARM1 | ADT7462_R3T_ALARM);
1470
1471 static SENSOR_DEVICE_ATTR(in1_max, S_IWUSR | S_IRUGO, show_volt_max,
1472 set_volt_max, 0);
1473 static SENSOR_DEVICE_ATTR(in2_max, S_IWUSR | S_IRUGO, show_volt_max,
1474 set_volt_max, 1);
1475 static SENSOR_DEVICE_ATTR(in3_max, S_IWUSR | S_IRUGO, show_volt_max,
1476 set_volt_max, 2);
1477 static SENSOR_DEVICE_ATTR(in4_max, S_IWUSR | S_IRUGO, show_volt_max,
1478 set_volt_max, 3);
1479 static SENSOR_DEVICE_ATTR(in5_max, S_IWUSR | S_IRUGO, show_volt_max,
1480 set_volt_max, 4);
1481 static SENSOR_DEVICE_ATTR(in6_max, S_IWUSR | S_IRUGO, show_volt_max,
1482 set_volt_max, 5);
1483 static SENSOR_DEVICE_ATTR(in7_max, S_IWUSR | S_IRUGO, show_volt_max,
1484 set_volt_max, 6);
1485 static SENSOR_DEVICE_ATTR(in8_max, S_IWUSR | S_IRUGO, show_volt_max,
1486 set_volt_max, 7);
1487 static SENSOR_DEVICE_ATTR(in9_max, S_IWUSR | S_IRUGO, show_volt_max,
1488 set_volt_max, 8);
1489 static SENSOR_DEVICE_ATTR(in10_max, S_IWUSR | S_IRUGO, show_volt_max,
1490 set_volt_max, 9);
1491 static SENSOR_DEVICE_ATTR(in11_max, S_IWUSR | S_IRUGO, show_volt_max,
1492 set_volt_max, 10);
1493 static SENSOR_DEVICE_ATTR(in12_max, S_IWUSR | S_IRUGO, show_volt_max,
1494 set_volt_max, 11);
1495 static SENSOR_DEVICE_ATTR(in13_max, S_IWUSR | S_IRUGO, show_volt_max,
1496 set_volt_max, 12);
1497
1498 static SENSOR_DEVICE_ATTR(in1_min, S_IWUSR | S_IRUGO, show_volt_min,
1499 set_volt_min, 0);
1500 static SENSOR_DEVICE_ATTR(in2_min, S_IWUSR | S_IRUGO, show_volt_min,
1501 set_volt_min, 1);
1502 static SENSOR_DEVICE_ATTR(in3_min, S_IWUSR | S_IRUGO, show_volt_min,
1503 set_volt_min, 2);
1504 static SENSOR_DEVICE_ATTR(in4_min, S_IWUSR | S_IRUGO, show_volt_min,
1505 set_volt_min, 3);
1506 static SENSOR_DEVICE_ATTR(in5_min, S_IWUSR | S_IRUGO, show_volt_min,
1507 set_volt_min, 4);
1508 static SENSOR_DEVICE_ATTR(in6_min, S_IWUSR | S_IRUGO, show_volt_min,
1509 set_volt_min, 5);
1510 static SENSOR_DEVICE_ATTR(in7_min, S_IWUSR | S_IRUGO, show_volt_min,
1511 set_volt_min, 6);
1512 static SENSOR_DEVICE_ATTR(in8_min, S_IWUSR | S_IRUGO, show_volt_min,
1513 set_volt_min, 7);
1514 static SENSOR_DEVICE_ATTR(in9_min, S_IWUSR | S_IRUGO, show_volt_min,
1515 set_volt_min, 8);
1516 static SENSOR_DEVICE_ATTR(in10_min, S_IWUSR | S_IRUGO, show_volt_min,
1517 set_volt_min, 9);
1518 static SENSOR_DEVICE_ATTR(in11_min, S_IWUSR | S_IRUGO, show_volt_min,
1519 set_volt_min, 10);
1520 static SENSOR_DEVICE_ATTR(in12_min, S_IWUSR | S_IRUGO, show_volt_min,
1521 set_volt_min, 11);
1522 static SENSOR_DEVICE_ATTR(in13_min, S_IWUSR | S_IRUGO, show_volt_min,
1523 set_volt_min, 12);
1524
1525 static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_voltage, NULL, 0);
1526 static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_voltage, NULL, 1);
1527 static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_voltage, NULL, 2);
1528 static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, show_voltage, NULL, 3);
1529 static SENSOR_DEVICE_ATTR(in5_input, S_IRUGO, show_voltage, NULL, 4);
1530 static SENSOR_DEVICE_ATTR(in6_input, S_IRUGO, show_voltage, NULL, 5);
1531 static SENSOR_DEVICE_ATTR(in7_input, S_IRUGO, show_voltage, NULL, 6);
1532 static SENSOR_DEVICE_ATTR(in8_input, S_IRUGO, show_voltage, NULL, 7);
1533 static SENSOR_DEVICE_ATTR(in9_input, S_IRUGO, show_voltage, NULL, 8);
1534 static SENSOR_DEVICE_ATTR(in10_input, S_IRUGO, show_voltage, NULL, 9);
1535 static SENSOR_DEVICE_ATTR(in11_input, S_IRUGO, show_voltage, NULL, 10);
1536 static SENSOR_DEVICE_ATTR(in12_input, S_IRUGO, show_voltage, NULL, 11);
1537 static SENSOR_DEVICE_ATTR(in13_input, S_IRUGO, show_voltage, NULL, 12);
1538
1539 static SENSOR_DEVICE_ATTR(in1_label, S_IRUGO, show_voltage_label, NULL, 0);
1540 static SENSOR_DEVICE_ATTR(in2_label, S_IRUGO, show_voltage_label, NULL, 1);
1541 static SENSOR_DEVICE_ATTR(in3_label, S_IRUGO, show_voltage_label, NULL, 2);
1542 static SENSOR_DEVICE_ATTR(in4_label, S_IRUGO, show_voltage_label, NULL, 3);
1543 static SENSOR_DEVICE_ATTR(in5_label, S_IRUGO, show_voltage_label, NULL, 4);
1544 static SENSOR_DEVICE_ATTR(in6_label, S_IRUGO, show_voltage_label, NULL, 5);
1545 static SENSOR_DEVICE_ATTR(in7_label, S_IRUGO, show_voltage_label, NULL, 6);
1546 static SENSOR_DEVICE_ATTR(in8_label, S_IRUGO, show_voltage_label, NULL, 7);
1547 static SENSOR_DEVICE_ATTR(in9_label, S_IRUGO, show_voltage_label, NULL, 8);
1548 static SENSOR_DEVICE_ATTR(in10_label, S_IRUGO, show_voltage_label, NULL, 9);
1549 static SENSOR_DEVICE_ATTR(in11_label, S_IRUGO, show_voltage_label, NULL, 10);
1550 static SENSOR_DEVICE_ATTR(in12_label, S_IRUGO, show_voltage_label, NULL, 11);
1551 static SENSOR_DEVICE_ATTR(in13_label, S_IRUGO, show_voltage_label, NULL, 12);
1552
1553 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL,
1554 ADT7462_ALARM2 | ADT7462_V0_ALARM);
1555 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL,
1556 ADT7462_ALARM2 | ADT7462_V7_ALARM);
1557 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL,
1558 ADT7462_ALARM2 | ADT7462_V2_ALARM);
1559 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL,
1560 ADT7462_ALARM2 | ADT7462_V6_ALARM);
1561 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL,
1562 ADT7462_ALARM2 | ADT7462_V5_ALARM);
1563 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL,
1564 ADT7462_ALARM2 | ADT7462_V4_ALARM);
1565 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL,
1566 ADT7462_ALARM2 | ADT7462_V3_ALARM);
1567 static SENSOR_DEVICE_ATTR(in8_alarm, S_IRUGO, show_alarm, NULL,
1568 ADT7462_ALARM2 | ADT7462_V1_ALARM);
1569 static SENSOR_DEVICE_ATTR(in9_alarm, S_IRUGO, show_alarm, NULL,
1570 ADT7462_ALARM3 | ADT7462_V10_ALARM);
1571 static SENSOR_DEVICE_ATTR(in10_alarm, S_IRUGO, show_alarm, NULL,
1572 ADT7462_ALARM3 | ADT7462_V9_ALARM);
1573 static SENSOR_DEVICE_ATTR(in11_alarm, S_IRUGO, show_alarm, NULL,
1574 ADT7462_ALARM3 | ADT7462_V8_ALARM);
1575 static SENSOR_DEVICE_ATTR(in12_alarm, S_IRUGO, show_alarm, NULL,
1576 ADT7462_ALARM3 | ADT7462_V11_ALARM);
1577 static SENSOR_DEVICE_ATTR(in13_alarm, S_IRUGO, show_alarm, NULL,
1578 ADT7462_ALARM3 | ADT7462_V12_ALARM);
1579
1580 static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan_min,
1581 set_fan_min, 0);
1582 static SENSOR_DEVICE_ATTR(fan2_min, S_IWUSR | S_IRUGO, show_fan_min,
1583 set_fan_min, 1);
1584 static SENSOR_DEVICE_ATTR(fan3_min, S_IWUSR | S_IRUGO, show_fan_min,
1585 set_fan_min, 2);
1586 static SENSOR_DEVICE_ATTR(fan4_min, S_IWUSR | S_IRUGO, show_fan_min,
1587 set_fan_min, 3);
1588 static SENSOR_DEVICE_ATTR(fan5_min, S_IWUSR | S_IRUGO, show_fan_min,
1589 set_fan_min, 4);
1590 static SENSOR_DEVICE_ATTR(fan6_min, S_IWUSR | S_IRUGO, show_fan_min,
1591 set_fan_min, 5);
1592 static SENSOR_DEVICE_ATTR(fan7_min, S_IWUSR | S_IRUGO, show_fan_min,
1593 set_fan_min, 6);
1594 static SENSOR_DEVICE_ATTR(fan8_min, S_IWUSR | S_IRUGO, show_fan_min,
1595 set_fan_min, 7);
1596
1597 static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0);
1598 static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1);
1599 static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2);
1600 static SENSOR_DEVICE_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 3);
1601 static SENSOR_DEVICE_ATTR(fan5_input, S_IRUGO, show_fan, NULL, 4);
1602 static SENSOR_DEVICE_ATTR(fan6_input, S_IRUGO, show_fan, NULL, 5);
1603 static SENSOR_DEVICE_ATTR(fan7_input, S_IRUGO, show_fan, NULL, 6);
1604 static SENSOR_DEVICE_ATTR(fan8_input, S_IRUGO, show_fan, NULL, 7);
1605
1606 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL,
1607 ADT7462_ALARM4 | ADT7462_F0_ALARM);
1608 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL,
1609 ADT7462_ALARM4 | ADT7462_F1_ALARM);
1610 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL,
1611 ADT7462_ALARM4 | ADT7462_F2_ALARM);
1612 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL,
1613 ADT7462_ALARM4 | ADT7462_F3_ALARM);
1614 static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL,
1615 ADT7462_ALARM4 | ADT7462_F4_ALARM);
1616 static SENSOR_DEVICE_ATTR(fan6_alarm, S_IRUGO, show_alarm, NULL,
1617 ADT7462_ALARM4 | ADT7462_F5_ALARM);
1618 static SENSOR_DEVICE_ATTR(fan7_alarm, S_IRUGO, show_alarm, NULL,
1619 ADT7462_ALARM4 | ADT7462_F6_ALARM);
1620 static SENSOR_DEVICE_ATTR(fan8_alarm, S_IRUGO, show_alarm, NULL,
1621 ADT7462_ALARM4 | ADT7462_F7_ALARM);
1622
1623 static SENSOR_DEVICE_ATTR(force_pwm_max, S_IWUSR | S_IRUGO,
1624 show_force_pwm_max, set_force_pwm_max, 0);
1625
1626 static SENSOR_DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 0);
1627 static SENSOR_DEVICE_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 1);
1628 static SENSOR_DEVICE_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 2);
1629 static SENSOR_DEVICE_ATTR(pwm4, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 3);
1630
1631 static SENSOR_DEVICE_ATTR(pwm1_auto_point1_pwm, S_IWUSR | S_IRUGO,
1632 show_pwm_min, set_pwm_min, 0);
1633 static SENSOR_DEVICE_ATTR(pwm2_auto_point1_pwm, S_IWUSR | S_IRUGO,
1634 show_pwm_min, set_pwm_min, 1);
1635 static SENSOR_DEVICE_ATTR(pwm3_auto_point1_pwm, S_IWUSR | S_IRUGO,
1636 show_pwm_min, set_pwm_min, 2);
1637 static SENSOR_DEVICE_ATTR(pwm4_auto_point1_pwm, S_IWUSR | S_IRUGO,
1638 show_pwm_min, set_pwm_min, 3);
1639
1640 static SENSOR_DEVICE_ATTR(pwm1_auto_point2_pwm, S_IWUSR | S_IRUGO,
1641 show_pwm_max, set_pwm_max, 0);
1642 static SENSOR_DEVICE_ATTR(pwm2_auto_point2_pwm, S_IWUSR | S_IRUGO,
1643 show_pwm_max, set_pwm_max, 1);
1644 static SENSOR_DEVICE_ATTR(pwm3_auto_point2_pwm, S_IWUSR | S_IRUGO,
1645 show_pwm_max, set_pwm_max, 2);
1646 static SENSOR_DEVICE_ATTR(pwm4_auto_point2_pwm, S_IWUSR | S_IRUGO,
1647 show_pwm_max, set_pwm_max, 3);
1648
1649 static SENSOR_DEVICE_ATTR(temp1_auto_point1_hyst, S_IWUSR | S_IRUGO,
1650 show_pwm_hyst, set_pwm_hyst, 0);
1651 static SENSOR_DEVICE_ATTR(temp2_auto_point1_hyst, S_IWUSR | S_IRUGO,
1652 show_pwm_hyst, set_pwm_hyst, 1);
1653 static SENSOR_DEVICE_ATTR(temp3_auto_point1_hyst, S_IWUSR | S_IRUGO,
1654 show_pwm_hyst, set_pwm_hyst, 2);
1655 static SENSOR_DEVICE_ATTR(temp4_auto_point1_hyst, S_IWUSR | S_IRUGO,
1656 show_pwm_hyst, set_pwm_hyst, 3);
1657
1658 static SENSOR_DEVICE_ATTR(temp1_auto_point2_hyst, S_IWUSR | S_IRUGO,
1659 show_pwm_hyst, set_pwm_hyst, 0);
1660 static SENSOR_DEVICE_ATTR(temp2_auto_point2_hyst, S_IWUSR | S_IRUGO,
1661 show_pwm_hyst, set_pwm_hyst, 1);
1662 static SENSOR_DEVICE_ATTR(temp3_auto_point2_hyst, S_IWUSR | S_IRUGO,
1663 show_pwm_hyst, set_pwm_hyst, 2);
1664 static SENSOR_DEVICE_ATTR(temp4_auto_point2_hyst, S_IWUSR | S_IRUGO,
1665 show_pwm_hyst, set_pwm_hyst, 3);
1666
1667 static SENSOR_DEVICE_ATTR(temp1_auto_point1_temp, S_IWUSR | S_IRUGO,
1668 show_pwm_tmin, set_pwm_tmin, 0);
1669 static SENSOR_DEVICE_ATTR(temp2_auto_point1_temp, S_IWUSR | S_IRUGO,
1670 show_pwm_tmin, set_pwm_tmin, 1);
1671 static SENSOR_DEVICE_ATTR(temp3_auto_point1_temp, S_IWUSR | S_IRUGO,
1672 show_pwm_tmin, set_pwm_tmin, 2);
1673 static SENSOR_DEVICE_ATTR(temp4_auto_point1_temp, S_IWUSR | S_IRUGO,
1674 show_pwm_tmin, set_pwm_tmin, 3);
1675
1676 static SENSOR_DEVICE_ATTR(temp1_auto_point2_temp, S_IWUSR | S_IRUGO,
1677 show_pwm_tmax, set_pwm_tmax, 0);
1678 static SENSOR_DEVICE_ATTR(temp2_auto_point2_temp, S_IWUSR | S_IRUGO,
1679 show_pwm_tmax, set_pwm_tmax, 1);
1680 static SENSOR_DEVICE_ATTR(temp3_auto_point2_temp, S_IWUSR | S_IRUGO,
1681 show_pwm_tmax, set_pwm_tmax, 2);
1682 static SENSOR_DEVICE_ATTR(temp4_auto_point2_temp, S_IWUSR | S_IRUGO,
1683 show_pwm_tmax, set_pwm_tmax, 3);
1684
1685 static SENSOR_DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO, show_pwm_auto,
1686 set_pwm_auto, 0);
1687 static SENSOR_DEVICE_ATTR(pwm2_enable, S_IWUSR | S_IRUGO, show_pwm_auto,
1688 set_pwm_auto, 1);
1689 static SENSOR_DEVICE_ATTR(pwm3_enable, S_IWUSR | S_IRUGO, show_pwm_auto,
1690 set_pwm_auto, 2);
1691 static SENSOR_DEVICE_ATTR(pwm4_enable, S_IWUSR | S_IRUGO, show_pwm_auto,
1692 set_pwm_auto, 3);
1693
1694 static SENSOR_DEVICE_ATTR(pwm1_auto_channels_temp, S_IWUSR | S_IRUGO,
1695 show_pwm_auto_temp, set_pwm_auto_temp, 0);
1696 static SENSOR_DEVICE_ATTR(pwm2_auto_channels_temp, S_IWUSR | S_IRUGO,
1697 show_pwm_auto_temp, set_pwm_auto_temp, 1);
1698 static SENSOR_DEVICE_ATTR(pwm3_auto_channels_temp, S_IWUSR | S_IRUGO,
1699 show_pwm_auto_temp, set_pwm_auto_temp, 2);
1700 static SENSOR_DEVICE_ATTR(pwm4_auto_channels_temp, S_IWUSR | S_IRUGO,
1701 show_pwm_auto_temp, set_pwm_auto_temp, 3);
1702
1703 static struct attribute *adt7462_attrs[] = {
1704 &sensor_dev_attr_temp1_max.dev_attr.attr,
1705 &sensor_dev_attr_temp2_max.dev_attr.attr,
1706 &sensor_dev_attr_temp3_max.dev_attr.attr,
1707 &sensor_dev_attr_temp4_max.dev_attr.attr,
1708
1709 &sensor_dev_attr_temp1_min.dev_attr.attr,
1710 &sensor_dev_attr_temp2_min.dev_attr.attr,
1711 &sensor_dev_attr_temp3_min.dev_attr.attr,
1712 &sensor_dev_attr_temp4_min.dev_attr.attr,
1713
1714 &sensor_dev_attr_temp1_input.dev_attr.attr,
1715 &sensor_dev_attr_temp2_input.dev_attr.attr,
1716 &sensor_dev_attr_temp3_input.dev_attr.attr,
1717 &sensor_dev_attr_temp4_input.dev_attr.attr,
1718
1719 &sensor_dev_attr_temp1_label.dev_attr.attr,
1720 &sensor_dev_attr_temp2_label.dev_attr.attr,
1721 &sensor_dev_attr_temp3_label.dev_attr.attr,
1722 &sensor_dev_attr_temp4_label.dev_attr.attr,
1723
1724 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1725 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1726 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1727 &sensor_dev_attr_temp4_alarm.dev_attr.attr,
1728
1729 &sensor_dev_attr_in1_max.dev_attr.attr,
1730 &sensor_dev_attr_in2_max.dev_attr.attr,
1731 &sensor_dev_attr_in3_max.dev_attr.attr,
1732 &sensor_dev_attr_in4_max.dev_attr.attr,
1733 &sensor_dev_attr_in5_max.dev_attr.attr,
1734 &sensor_dev_attr_in6_max.dev_attr.attr,
1735 &sensor_dev_attr_in7_max.dev_attr.attr,
1736 &sensor_dev_attr_in8_max.dev_attr.attr,
1737 &sensor_dev_attr_in9_max.dev_attr.attr,
1738 &sensor_dev_attr_in10_max.dev_attr.attr,
1739 &sensor_dev_attr_in11_max.dev_attr.attr,
1740 &sensor_dev_attr_in12_max.dev_attr.attr,
1741 &sensor_dev_attr_in13_max.dev_attr.attr,
1742
1743 &sensor_dev_attr_in1_min.dev_attr.attr,
1744 &sensor_dev_attr_in2_min.dev_attr.attr,
1745 &sensor_dev_attr_in3_min.dev_attr.attr,
1746 &sensor_dev_attr_in4_min.dev_attr.attr,
1747 &sensor_dev_attr_in5_min.dev_attr.attr,
1748 &sensor_dev_attr_in6_min.dev_attr.attr,
1749 &sensor_dev_attr_in7_min.dev_attr.attr,
1750 &sensor_dev_attr_in8_min.dev_attr.attr,
1751 &sensor_dev_attr_in9_min.dev_attr.attr,
1752 &sensor_dev_attr_in10_min.dev_attr.attr,
1753 &sensor_dev_attr_in11_min.dev_attr.attr,
1754 &sensor_dev_attr_in12_min.dev_attr.attr,
1755 &sensor_dev_attr_in13_min.dev_attr.attr,
1756
1757 &sensor_dev_attr_in1_input.dev_attr.attr,
1758 &sensor_dev_attr_in2_input.dev_attr.attr,
1759 &sensor_dev_attr_in3_input.dev_attr.attr,
1760 &sensor_dev_attr_in4_input.dev_attr.attr,
1761 &sensor_dev_attr_in5_input.dev_attr.attr,
1762 &sensor_dev_attr_in6_input.dev_attr.attr,
1763 &sensor_dev_attr_in7_input.dev_attr.attr,
1764 &sensor_dev_attr_in8_input.dev_attr.attr,
1765 &sensor_dev_attr_in9_input.dev_attr.attr,
1766 &sensor_dev_attr_in10_input.dev_attr.attr,
1767 &sensor_dev_attr_in11_input.dev_attr.attr,
1768 &sensor_dev_attr_in12_input.dev_attr.attr,
1769 &sensor_dev_attr_in13_input.dev_attr.attr,
1770
1771 &sensor_dev_attr_in1_label.dev_attr.attr,
1772 &sensor_dev_attr_in2_label.dev_attr.attr,
1773 &sensor_dev_attr_in3_label.dev_attr.attr,
1774 &sensor_dev_attr_in4_label.dev_attr.attr,
1775 &sensor_dev_attr_in5_label.dev_attr.attr,
1776 &sensor_dev_attr_in6_label.dev_attr.attr,
1777 &sensor_dev_attr_in7_label.dev_attr.attr,
1778 &sensor_dev_attr_in8_label.dev_attr.attr,
1779 &sensor_dev_attr_in9_label.dev_attr.attr,
1780 &sensor_dev_attr_in10_label.dev_attr.attr,
1781 &sensor_dev_attr_in11_label.dev_attr.attr,
1782 &sensor_dev_attr_in12_label.dev_attr.attr,
1783 &sensor_dev_attr_in13_label.dev_attr.attr,
1784
1785 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1786 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1787 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1788 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1789 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1790 &sensor_dev_attr_in6_alarm.dev_attr.attr,
1791 &sensor_dev_attr_in7_alarm.dev_attr.attr,
1792 &sensor_dev_attr_in8_alarm.dev_attr.attr,
1793 &sensor_dev_attr_in9_alarm.dev_attr.attr,
1794 &sensor_dev_attr_in10_alarm.dev_attr.attr,
1795 &sensor_dev_attr_in11_alarm.dev_attr.attr,
1796 &sensor_dev_attr_in12_alarm.dev_attr.attr,
1797 &sensor_dev_attr_in13_alarm.dev_attr.attr,
1798
1799 &sensor_dev_attr_fan1_min.dev_attr.attr,
1800 &sensor_dev_attr_fan2_min.dev_attr.attr,
1801 &sensor_dev_attr_fan3_min.dev_attr.attr,
1802 &sensor_dev_attr_fan4_min.dev_attr.attr,
1803 &sensor_dev_attr_fan5_min.dev_attr.attr,
1804 &sensor_dev_attr_fan6_min.dev_attr.attr,
1805 &sensor_dev_attr_fan7_min.dev_attr.attr,
1806 &sensor_dev_attr_fan8_min.dev_attr.attr,
1807
1808 &sensor_dev_attr_fan1_input.dev_attr.attr,
1809 &sensor_dev_attr_fan2_input.dev_attr.attr,
1810 &sensor_dev_attr_fan3_input.dev_attr.attr,
1811 &sensor_dev_attr_fan4_input.dev_attr.attr,
1812 &sensor_dev_attr_fan5_input.dev_attr.attr,
1813 &sensor_dev_attr_fan6_input.dev_attr.attr,
1814 &sensor_dev_attr_fan7_input.dev_attr.attr,
1815 &sensor_dev_attr_fan8_input.dev_attr.attr,
1816
1817 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1818 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1819 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1820 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1821 &sensor_dev_attr_fan5_alarm.dev_attr.attr,
1822 &sensor_dev_attr_fan6_alarm.dev_attr.attr,
1823 &sensor_dev_attr_fan7_alarm.dev_attr.attr,
1824 &sensor_dev_attr_fan8_alarm.dev_attr.attr,
1825
1826 &sensor_dev_attr_force_pwm_max.dev_attr.attr,
1827 &sensor_dev_attr_pwm1.dev_attr.attr,
1828 &sensor_dev_attr_pwm2.dev_attr.attr,
1829 &sensor_dev_attr_pwm3.dev_attr.attr,
1830 &sensor_dev_attr_pwm4.dev_attr.attr,
1831
1832 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1833 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1834 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1835 &sensor_dev_attr_pwm4_auto_point1_pwm.dev_attr.attr,
1836
1837 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1838 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1839 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1840 &sensor_dev_attr_pwm4_auto_point2_pwm.dev_attr.attr,
1841
1842 &sensor_dev_attr_temp1_auto_point1_hyst.dev_attr.attr,
1843 &sensor_dev_attr_temp2_auto_point1_hyst.dev_attr.attr,
1844 &sensor_dev_attr_temp3_auto_point1_hyst.dev_attr.attr,
1845 &sensor_dev_attr_temp4_auto_point1_hyst.dev_attr.attr,
1846
1847 &sensor_dev_attr_temp1_auto_point2_hyst.dev_attr.attr,
1848 &sensor_dev_attr_temp2_auto_point2_hyst.dev_attr.attr,
1849 &sensor_dev_attr_temp3_auto_point2_hyst.dev_attr.attr,
1850 &sensor_dev_attr_temp4_auto_point2_hyst.dev_attr.attr,
1851
1852 &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr,
1853 &sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr,
1854 &sensor_dev_attr_temp3_auto_point1_temp.dev_attr.attr,
1855 &sensor_dev_attr_temp4_auto_point1_temp.dev_attr.attr,
1856
1857 &sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr,
1858 &sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr,
1859 &sensor_dev_attr_temp3_auto_point2_temp.dev_attr.attr,
1860 &sensor_dev_attr_temp4_auto_point2_temp.dev_attr.attr,
1861
1862 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1863 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1864 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1865 &sensor_dev_attr_pwm4_enable.dev_attr.attr,
1866
1867 &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
1868 &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
1869 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
1870 &sensor_dev_attr_pwm4_auto_channels_temp.dev_attr.attr,
1871 NULL
1872 };
1873
1874 ATTRIBUTE_GROUPS(adt7462);
1875
1876 /* Return 0 if detection is successful, -ENODEV otherwise */
adt7462_detect(struct i2c_client * client,struct i2c_board_info * info)1877 static int adt7462_detect(struct i2c_client *client,
1878 struct i2c_board_info *info)
1879 {
1880 struct i2c_adapter *adapter = client->adapter;
1881 int vendor, device, revision;
1882
1883 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1884 return -ENODEV;
1885
1886 vendor = i2c_smbus_read_byte_data(client, ADT7462_REG_VENDOR);
1887 if (vendor != ADT7462_VENDOR)
1888 return -ENODEV;
1889
1890 device = i2c_smbus_read_byte_data(client, ADT7462_REG_DEVICE);
1891 if (device != ADT7462_DEVICE)
1892 return -ENODEV;
1893
1894 revision = i2c_smbus_read_byte_data(client, ADT7462_REG_REVISION);
1895 if (revision != ADT7462_REVISION)
1896 return -ENODEV;
1897
1898 strlcpy(info->type, "adt7462", I2C_NAME_SIZE);
1899
1900 return 0;
1901 }
1902
adt7462_probe(struct i2c_client * client,const struct i2c_device_id * id)1903 static int adt7462_probe(struct i2c_client *client,
1904 const struct i2c_device_id *id)
1905 {
1906 struct device *dev = &client->dev;
1907 struct adt7462_data *data;
1908 struct device *hwmon_dev;
1909
1910 data = devm_kzalloc(dev, sizeof(struct adt7462_data), GFP_KERNEL);
1911 if (!data)
1912 return -ENOMEM;
1913
1914 data->client = client;
1915 mutex_init(&data->lock);
1916
1917 dev_info(&client->dev, "%s chip found\n", client->name);
1918
1919 hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
1920 data,
1921 adt7462_groups);
1922 return PTR_ERR_OR_ZERO(hwmon_dev);
1923 }
1924
1925 static const struct i2c_device_id adt7462_id[] = {
1926 { "adt7462", 0 },
1927 { }
1928 };
1929 MODULE_DEVICE_TABLE(i2c, adt7462_id);
1930
1931 static struct i2c_driver adt7462_driver = {
1932 .class = I2C_CLASS_HWMON,
1933 .driver = {
1934 .name = "adt7462",
1935 },
1936 .probe = adt7462_probe,
1937 .id_table = adt7462_id,
1938 .detect = adt7462_detect,
1939 .address_list = normal_i2c,
1940 };
1941
1942 module_i2c_driver(adt7462_driver);
1943
1944 MODULE_AUTHOR("Darrick J. Wong <darrick.wong@oracle.com>");
1945 MODULE_DESCRIPTION("ADT7462 driver");
1946 MODULE_LICENSE("GPL");
1947