1 /*
2 * A hwmon driver for the Analog Devices ADT7462
3 * Copyright (C) 2008 IBM
4 *
5 * Author: Darrick J. Wong <djwong@us.ibm.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/delay.h>
30 #include <linux/log2.h>
31 #include <linux/slab.h>
32
33 /* Addresses to scan */
34 static const unsigned short normal_i2c[] = { 0x58, 0x5C, I2C_CLIENT_END };
35
36 /* ADT7462 registers */
37 #define ADT7462_REG_DEVICE 0x3D
38 #define ADT7462_REG_VENDOR 0x3E
39 #define ADT7462_REG_REVISION 0x3F
40
41 #define ADT7462_REG_MIN_TEMP_BASE_ADDR 0x44
42 #define ADT7462_REG_MIN_TEMP_MAX_ADDR 0x47
43 #define ADT7462_REG_MAX_TEMP_BASE_ADDR 0x48
44 #define ADT7462_REG_MAX_TEMP_MAX_ADDR 0x4B
45 #define ADT7462_REG_TEMP_BASE_ADDR 0x88
46 #define ADT7462_REG_TEMP_MAX_ADDR 0x8F
47
48 #define ADT7462_REG_FAN_BASE_ADDR 0x98
49 #define ADT7462_REG_FAN_MAX_ADDR 0x9F
50 #define ADT7462_REG_FAN2_BASE_ADDR 0xA2
51 #define ADT7462_REG_FAN2_MAX_ADDR 0xA9
52 #define ADT7462_REG_FAN_ENABLE 0x07
53 #define ADT7462_REG_FAN_MIN_BASE_ADDR 0x78
54 #define ADT7462_REG_FAN_MIN_MAX_ADDR 0x7F
55
56 #define ADT7462_REG_CFG2 0x02
57 #define ADT7462_FSPD_MASK 0x20
58
59 #define ADT7462_REG_PWM_BASE_ADDR 0xAA
60 #define ADT7462_REG_PWM_MAX_ADDR 0xAD
61 #define ADT7462_REG_PWM_MIN_BASE_ADDR 0x28
62 #define ADT7462_REG_PWM_MIN_MAX_ADDR 0x2B
63 #define ADT7462_REG_PWM_MAX 0x2C
64 #define ADT7462_REG_PWM_TEMP_MIN_BASE_ADDR 0x5C
65 #define ADT7462_REG_PWM_TEMP_MIN_MAX_ADDR 0x5F
66 #define ADT7462_REG_PWM_TEMP_RANGE_BASE_ADDR 0x60
67 #define ADT7462_REG_PWM_TEMP_RANGE_MAX_ADDR 0x63
68 #define ADT7462_PWM_HYST_MASK 0x0F
69 #define ADT7462_PWM_RANGE_MASK 0xF0
70 #define ADT7462_PWM_RANGE_SHIFT 4
71 #define ADT7462_REG_PWM_CFG_BASE_ADDR 0x21
72 #define ADT7462_REG_PWM_CFG_MAX_ADDR 0x24
73 #define ADT7462_PWM_CHANNEL_MASK 0xE0
74 #define ADT7462_PWM_CHANNEL_SHIFT 5
75
76 #define ADT7462_REG_PIN_CFG_BASE_ADDR 0x10
77 #define ADT7462_REG_PIN_CFG_MAX_ADDR 0x13
78 #define ADT7462_PIN7_INPUT 0x01 /* cfg0 */
79 #define ADT7462_DIODE3_INPUT 0x20
80 #define ADT7462_DIODE1_INPUT 0x40
81 #define ADT7462_VID_INPUT 0x80
82 #define ADT7462_PIN22_INPUT 0x04 /* cfg1 */
83 #define ADT7462_PIN21_INPUT 0x08
84 #define ADT7462_PIN19_INPUT 0x10
85 #define ADT7462_PIN15_INPUT 0x20
86 #define ADT7462_PIN13_INPUT 0x40
87 #define ADT7462_PIN8_INPUT 0x80
88 #define ADT7462_PIN23_MASK 0x03
89 #define ADT7462_PIN23_SHIFT 0
90 #define ADT7462_PIN26_MASK 0x0C /* cfg2 */
91 #define ADT7462_PIN26_SHIFT 2
92 #define ADT7462_PIN25_MASK 0x30
93 #define ADT7462_PIN25_SHIFT 4
94 #define ADT7462_PIN24_MASK 0xC0
95 #define ADT7462_PIN24_SHIFT 6
96 #define ADT7462_PIN26_VOLT_INPUT 0x08
97 #define ADT7462_PIN25_VOLT_INPUT 0x20
98 #define ADT7462_PIN28_SHIFT 4 /* cfg3 */
99 #define ADT7462_PIN28_VOLT 0x5
100
101 #define ADT7462_REG_ALARM1 0xB8
102 #define ADT7462_LT_ALARM 0x02
103 #define ADT7462_R1T_ALARM 0x04
104 #define ADT7462_R2T_ALARM 0x08
105 #define ADT7462_R3T_ALARM 0x10
106 #define ADT7462_REG_ALARM2 0xBB
107 #define ADT7462_V0_ALARM 0x01
108 #define ADT7462_V1_ALARM 0x02
109 #define ADT7462_V2_ALARM 0x04
110 #define ADT7462_V3_ALARM 0x08
111 #define ADT7462_V4_ALARM 0x10
112 #define ADT7462_V5_ALARM 0x20
113 #define ADT7462_V6_ALARM 0x40
114 #define ADT7462_V7_ALARM 0x80
115 #define ADT7462_REG_ALARM3 0xBC
116 #define ADT7462_V8_ALARM 0x08
117 #define ADT7462_V9_ALARM 0x10
118 #define ADT7462_V10_ALARM 0x20
119 #define ADT7462_V11_ALARM 0x40
120 #define ADT7462_V12_ALARM 0x80
121 #define ADT7462_REG_ALARM4 0xBD
122 #define ADT7462_F0_ALARM 0x01
123 #define ADT7462_F1_ALARM 0x02
124 #define ADT7462_F2_ALARM 0x04
125 #define ADT7462_F3_ALARM 0x08
126 #define ADT7462_F4_ALARM 0x10
127 #define ADT7462_F5_ALARM 0x20
128 #define ADT7462_F6_ALARM 0x40
129 #define ADT7462_F7_ALARM 0x80
130 #define ADT7462_ALARM1 0x0000
131 #define ADT7462_ALARM2 0x0100
132 #define ADT7462_ALARM3 0x0200
133 #define ADT7462_ALARM4 0x0300
134 #define ADT7462_ALARM_REG_SHIFT 8
135 #define ADT7462_ALARM_FLAG_MASK 0x0F
136
137 #define ADT7462_TEMP_COUNT 4
138 #define ADT7462_TEMP_REG(x) (ADT7462_REG_TEMP_BASE_ADDR + ((x) * 2))
139 #define ADT7462_TEMP_MIN_REG(x) (ADT7462_REG_MIN_TEMP_BASE_ADDR + (x))
140 #define ADT7462_TEMP_MAX_REG(x) (ADT7462_REG_MAX_TEMP_BASE_ADDR + (x))
141 #define TEMP_FRAC_OFFSET 6
142
143 #define ADT7462_FAN_COUNT 8
144 #define ADT7462_REG_FAN_MIN(x) (ADT7462_REG_FAN_MIN_BASE_ADDR + (x))
145
146 #define ADT7462_PWM_COUNT 4
147 #define ADT7462_REG_PWM(x) (ADT7462_REG_PWM_BASE_ADDR + (x))
148 #define ADT7462_REG_PWM_MIN(x) (ADT7462_REG_PWM_MIN_BASE_ADDR + (x))
149 #define ADT7462_REG_PWM_TMIN(x) \
150 (ADT7462_REG_PWM_TEMP_MIN_BASE_ADDR + (x))
151 #define ADT7462_REG_PWM_TRANGE(x) \
152 (ADT7462_REG_PWM_TEMP_RANGE_BASE_ADDR + (x))
153
154 #define ADT7462_PIN_CFG_REG_COUNT 4
155 #define ADT7462_REG_PIN_CFG(x) (ADT7462_REG_PIN_CFG_BASE_ADDR + (x))
156 #define ADT7462_REG_PWM_CFG(x) (ADT7462_REG_PWM_CFG_BASE_ADDR + (x))
157
158 #define ADT7462_ALARM_REG_COUNT 4
159
160 /*
161 * The chip can measure 13 different voltage sources:
162 *
163 * 1. +12V1 (pin 7)
164 * 2. Vccp1/+2.5V/+1.8V/+1.5V (pin 23)
165 * 3. +12V3 (pin 22)
166 * 4. +5V (pin 21)
167 * 5. +1.25V/+0.9V (pin 19)
168 * 6. +2.5V/+1.8V (pin 15)
169 * 7. +3.3v (pin 13)
170 * 8. +12V2 (pin 8)
171 * 9. Vbatt/FSB_Vtt (pin 26)
172 * A. +3.3V/+1.2V1 (pin 25)
173 * B. Vccp2/+2.5V/+1.8V/+1.5V (pin 24)
174 * C. +1.5V ICH (only if BOTH pin 28/29 are set to +1.5V)
175 * D. +1.5V 3GPIO (only if BOTH pin 28/29 are set to +1.5V)
176 *
177 * Each of these 13 has a factor to convert raw to voltage. Even better,
178 * the pins can be connected to other sensors (tach/gpio/hot/etc), which
179 * makes the bookkeeping tricky.
180 *
181 * Some, but not all, of these voltages have low/high limits.
182 */
183 #define ADT7462_VOLT_COUNT 13
184
185 #define ADT7462_VENDOR 0x41
186 #define ADT7462_DEVICE 0x62
187 /* datasheet only mentions a revision 4 */
188 #define ADT7462_REVISION 0x04
189
190 /* How often do we reread sensors values? (In jiffies) */
191 #define SENSOR_REFRESH_INTERVAL (2 * HZ)
192
193 /* How often do we reread sensor limit values? (In jiffies) */
194 #define LIMIT_REFRESH_INTERVAL (60 * HZ)
195
196 /* datasheet says to divide this number by the fan reading to get fan rpm */
197 #define FAN_PERIOD_TO_RPM(x) ((90000 * 60) / (x))
198 #define FAN_RPM_TO_PERIOD FAN_PERIOD_TO_RPM
199 #define FAN_PERIOD_INVALID 65535
200 #define FAN_DATA_VALID(x) ((x) && (x) != FAN_PERIOD_INVALID)
201
202 #define MASK_AND_SHIFT(value, prefix) \
203 (((value) & prefix##_MASK) >> prefix##_SHIFT)
204
205 struct adt7462_data {
206 struct device *hwmon_dev;
207 struct attribute_group attrs;
208 struct mutex lock;
209 char sensors_valid;
210 char limits_valid;
211 unsigned long sensors_last_updated; /* In jiffies */
212 unsigned long limits_last_updated; /* In jiffies */
213
214 u8 temp[ADT7462_TEMP_COUNT];
215 /* bits 6-7 are quarter pieces of temp */
216 u8 temp_frac[ADT7462_TEMP_COUNT];
217 u8 temp_min[ADT7462_TEMP_COUNT];
218 u8 temp_max[ADT7462_TEMP_COUNT];
219 u16 fan[ADT7462_FAN_COUNT];
220 u8 fan_enabled;
221 u8 fan_min[ADT7462_FAN_COUNT];
222 u8 cfg2;
223 u8 pwm[ADT7462_PWM_COUNT];
224 u8 pin_cfg[ADT7462_PIN_CFG_REG_COUNT];
225 u8 voltages[ADT7462_VOLT_COUNT];
226 u8 volt_max[ADT7462_VOLT_COUNT];
227 u8 volt_min[ADT7462_VOLT_COUNT];
228 u8 pwm_min[ADT7462_PWM_COUNT];
229 u8 pwm_tmin[ADT7462_PWM_COUNT];
230 u8 pwm_trange[ADT7462_PWM_COUNT];
231 u8 pwm_max; /* only one per chip */
232 u8 pwm_cfg[ADT7462_PWM_COUNT];
233 u8 alarms[ADT7462_ALARM_REG_COUNT];
234 };
235
236 static int adt7462_probe(struct i2c_client *client,
237 const struct i2c_device_id *id);
238 static int adt7462_detect(struct i2c_client *client,
239 struct i2c_board_info *info);
240 static int adt7462_remove(struct i2c_client *client);
241
242 static const struct i2c_device_id adt7462_id[] = {
243 { "adt7462", 0 },
244 { }
245 };
246 MODULE_DEVICE_TABLE(i2c, adt7462_id);
247
248 static struct i2c_driver adt7462_driver = {
249 .class = I2C_CLASS_HWMON,
250 .driver = {
251 .name = "adt7462",
252 },
253 .probe = adt7462_probe,
254 .remove = adt7462_remove,
255 .id_table = adt7462_id,
256 .detect = adt7462_detect,
257 .address_list = normal_i2c,
258 };
259
260 /*
261 * 16-bit registers on the ADT7462 are low-byte first. The data sheet says
262 * that the low byte must be read before the high byte.
263 */
adt7462_read_word_data(struct i2c_client * client,u8 reg)264 static inline int adt7462_read_word_data(struct i2c_client *client, u8 reg)
265 {
266 u16 foo;
267 foo = i2c_smbus_read_byte_data(client, reg);
268 foo |= ((u16)i2c_smbus_read_byte_data(client, reg + 1) << 8);
269 return foo;
270 }
271
272 /* For some reason these registers are not contiguous. */
ADT7462_REG_FAN(int fan)273 static int ADT7462_REG_FAN(int fan)
274 {
275 if (fan < 4)
276 return ADT7462_REG_FAN_BASE_ADDR + (2 * fan);
277 return ADT7462_REG_FAN2_BASE_ADDR + (2 * (fan - 4));
278 }
279
280 /* Voltage registers are scattered everywhere */
ADT7462_REG_VOLT_MAX(struct adt7462_data * data,int which)281 static int ADT7462_REG_VOLT_MAX(struct adt7462_data *data, int which)
282 {
283 switch (which) {
284 case 0:
285 if (!(data->pin_cfg[0] & ADT7462_PIN7_INPUT))
286 return 0x7C;
287 break;
288 case 1:
289 return 0x69;
290 case 2:
291 if (!(data->pin_cfg[1] & ADT7462_PIN22_INPUT))
292 return 0x7F;
293 break;
294 case 3:
295 if (!(data->pin_cfg[1] & ADT7462_PIN21_INPUT))
296 return 0x7E;
297 break;
298 case 4:
299 if (!(data->pin_cfg[0] & ADT7462_DIODE3_INPUT))
300 return 0x4B;
301 break;
302 case 5:
303 if (!(data->pin_cfg[0] & ADT7462_DIODE1_INPUT))
304 return 0x49;
305 break;
306 case 6:
307 if (!(data->pin_cfg[1] & ADT7462_PIN13_INPUT))
308 return 0x68;
309 break;
310 case 7:
311 if (!(data->pin_cfg[1] & ADT7462_PIN8_INPUT))
312 return 0x7D;
313 break;
314 case 8:
315 if (!(data->pin_cfg[2] & ADT7462_PIN26_VOLT_INPUT))
316 return 0x6C;
317 break;
318 case 9:
319 if (!(data->pin_cfg[2] & ADT7462_PIN25_VOLT_INPUT))
320 return 0x6B;
321 break;
322 case 10:
323 return 0x6A;
324 case 11:
325 if (data->pin_cfg[3] >> ADT7462_PIN28_SHIFT ==
326 ADT7462_PIN28_VOLT &&
327 !(data->pin_cfg[0] & ADT7462_VID_INPUT))
328 return 0x50;
329 break;
330 case 12:
331 if (data->pin_cfg[3] >> ADT7462_PIN28_SHIFT ==
332 ADT7462_PIN28_VOLT &&
333 !(data->pin_cfg[0] & ADT7462_VID_INPUT))
334 return 0x4C;
335 break;
336 }
337 return -ENODEV;
338 }
339
ADT7462_REG_VOLT_MIN(struct adt7462_data * data,int which)340 static int ADT7462_REG_VOLT_MIN(struct adt7462_data *data, int which)
341 {
342 switch (which) {
343 case 0:
344 if (!(data->pin_cfg[0] & ADT7462_PIN7_INPUT))
345 return 0x6D;
346 break;
347 case 1:
348 return 0x72;
349 case 2:
350 if (!(data->pin_cfg[1] & ADT7462_PIN22_INPUT))
351 return 0x6F;
352 break;
353 case 3:
354 if (!(data->pin_cfg[1] & ADT7462_PIN21_INPUT))
355 return 0x71;
356 break;
357 case 4:
358 if (!(data->pin_cfg[0] & ADT7462_DIODE3_INPUT))
359 return 0x47;
360 break;
361 case 5:
362 if (!(data->pin_cfg[0] & ADT7462_DIODE1_INPUT))
363 return 0x45;
364 break;
365 case 6:
366 if (!(data->pin_cfg[1] & ADT7462_PIN13_INPUT))
367 return 0x70;
368 break;
369 case 7:
370 if (!(data->pin_cfg[1] & ADT7462_PIN8_INPUT))
371 return 0x6E;
372 break;
373 case 8:
374 if (!(data->pin_cfg[2] & ADT7462_PIN26_VOLT_INPUT))
375 return 0x75;
376 break;
377 case 9:
378 if (!(data->pin_cfg[2] & ADT7462_PIN25_VOLT_INPUT))
379 return 0x74;
380 break;
381 case 10:
382 return 0x73;
383 case 11:
384 if (data->pin_cfg[3] >> ADT7462_PIN28_SHIFT ==
385 ADT7462_PIN28_VOLT &&
386 !(data->pin_cfg[0] & ADT7462_VID_INPUT))
387 return 0x76;
388 break;
389 case 12:
390 if (data->pin_cfg[3] >> ADT7462_PIN28_SHIFT ==
391 ADT7462_PIN28_VOLT &&
392 !(data->pin_cfg[0] & ADT7462_VID_INPUT))
393 return 0x77;
394 break;
395 }
396 return -ENODEV;
397 }
398
ADT7462_REG_VOLT(struct adt7462_data * data,int which)399 static int ADT7462_REG_VOLT(struct adt7462_data *data, int which)
400 {
401 switch (which) {
402 case 0:
403 if (!(data->pin_cfg[0] & ADT7462_PIN7_INPUT))
404 return 0xA3;
405 break;
406 case 1:
407 return 0x90;
408 case 2:
409 if (!(data->pin_cfg[1] & ADT7462_PIN22_INPUT))
410 return 0xA9;
411 break;
412 case 3:
413 if (!(data->pin_cfg[1] & ADT7462_PIN21_INPUT))
414 return 0xA7;
415 break;
416 case 4:
417 if (!(data->pin_cfg[0] & ADT7462_DIODE3_INPUT))
418 return 0x8F;
419 break;
420 case 5:
421 if (!(data->pin_cfg[0] & ADT7462_DIODE1_INPUT))
422 return 0x8B;
423 break;
424 case 6:
425 if (!(data->pin_cfg[1] & ADT7462_PIN13_INPUT))
426 return 0x96;
427 break;
428 case 7:
429 if (!(data->pin_cfg[1] & ADT7462_PIN8_INPUT))
430 return 0xA5;
431 break;
432 case 8:
433 if (!(data->pin_cfg[2] & ADT7462_PIN26_VOLT_INPUT))
434 return 0x93;
435 break;
436 case 9:
437 if (!(data->pin_cfg[2] & ADT7462_PIN25_VOLT_INPUT))
438 return 0x92;
439 break;
440 case 10:
441 return 0x91;
442 case 11:
443 if (data->pin_cfg[3] >> ADT7462_PIN28_SHIFT ==
444 ADT7462_PIN28_VOLT &&
445 !(data->pin_cfg[0] & ADT7462_VID_INPUT))
446 return 0x94;
447 break;
448 case 12:
449 if (data->pin_cfg[3] >> ADT7462_PIN28_SHIFT ==
450 ADT7462_PIN28_VOLT &&
451 !(data->pin_cfg[0] & ADT7462_VID_INPUT))
452 return 0x95;
453 break;
454 }
455 return -ENODEV;
456 }
457
458 /* Provide labels for sysfs */
voltage_label(struct adt7462_data * data,int which)459 static const char *voltage_label(struct adt7462_data *data, int which)
460 {
461 switch (which) {
462 case 0:
463 if (!(data->pin_cfg[0] & ADT7462_PIN7_INPUT))
464 return "+12V1";
465 break;
466 case 1:
467 switch (MASK_AND_SHIFT(data->pin_cfg[1], ADT7462_PIN23)) {
468 case 0:
469 return "Vccp1";
470 case 1:
471 return "+2.5V";
472 case 2:
473 return "+1.8V";
474 case 3:
475 return "+1.5V";
476 }
477 case 2:
478 if (!(data->pin_cfg[1] & ADT7462_PIN22_INPUT))
479 return "+12V3";
480 break;
481 case 3:
482 if (!(data->pin_cfg[1] & ADT7462_PIN21_INPUT))
483 return "+5V";
484 break;
485 case 4:
486 if (!(data->pin_cfg[0] & ADT7462_DIODE3_INPUT)) {
487 if (data->pin_cfg[1] & ADT7462_PIN19_INPUT)
488 return "+0.9V";
489 return "+1.25V";
490 }
491 break;
492 case 5:
493 if (!(data->pin_cfg[0] & ADT7462_DIODE1_INPUT)) {
494 if (data->pin_cfg[1] & ADT7462_PIN19_INPUT)
495 return "+1.8V";
496 return "+2.5V";
497 }
498 break;
499 case 6:
500 if (!(data->pin_cfg[1] & ADT7462_PIN13_INPUT))
501 return "+3.3V";
502 break;
503 case 7:
504 if (!(data->pin_cfg[1] & ADT7462_PIN8_INPUT))
505 return "+12V2";
506 break;
507 case 8:
508 switch (MASK_AND_SHIFT(data->pin_cfg[2], ADT7462_PIN26)) {
509 case 0:
510 return "Vbatt";
511 case 1:
512 return "FSB_Vtt";
513 }
514 break;
515 case 9:
516 switch (MASK_AND_SHIFT(data->pin_cfg[2], ADT7462_PIN25)) {
517 case 0:
518 return "+3.3V";
519 case 1:
520 return "+1.2V1";
521 }
522 break;
523 case 10:
524 switch (MASK_AND_SHIFT(data->pin_cfg[2], ADT7462_PIN24)) {
525 case 0:
526 return "Vccp2";
527 case 1:
528 return "+2.5V";
529 case 2:
530 return "+1.8V";
531 case 3:
532 return "+1.5";
533 }
534 case 11:
535 if (data->pin_cfg[3] >> ADT7462_PIN28_SHIFT ==
536 ADT7462_PIN28_VOLT &&
537 !(data->pin_cfg[0] & ADT7462_VID_INPUT))
538 return "+1.5V ICH";
539 break;
540 case 12:
541 if (data->pin_cfg[3] >> ADT7462_PIN28_SHIFT ==
542 ADT7462_PIN28_VOLT &&
543 !(data->pin_cfg[0] & ADT7462_VID_INPUT))
544 return "+1.5V 3GPIO";
545 break;
546 }
547 return "N/A";
548 }
549
550 /* Multipliers are actually in uV, not mV. */
voltage_multiplier(struct adt7462_data * data,int which)551 static int voltage_multiplier(struct adt7462_data *data, int which)
552 {
553 switch (which) {
554 case 0:
555 if (!(data->pin_cfg[0] & ADT7462_PIN7_INPUT))
556 return 62500;
557 break;
558 case 1:
559 switch (MASK_AND_SHIFT(data->pin_cfg[1], ADT7462_PIN23)) {
560 case 0:
561 if (data->pin_cfg[0] & ADT7462_VID_INPUT)
562 return 12500;
563 return 6250;
564 case 1:
565 return 13000;
566 case 2:
567 return 9400;
568 case 3:
569 return 7800;
570 }
571 case 2:
572 if (!(data->pin_cfg[1] & ADT7462_PIN22_INPUT))
573 return 62500;
574 break;
575 case 3:
576 if (!(data->pin_cfg[1] & ADT7462_PIN21_INPUT))
577 return 26000;
578 break;
579 case 4:
580 if (!(data->pin_cfg[0] & ADT7462_DIODE3_INPUT)) {
581 if (data->pin_cfg[1] & ADT7462_PIN19_INPUT)
582 return 4690;
583 return 6500;
584 }
585 break;
586 case 5:
587 if (!(data->pin_cfg[0] & ADT7462_DIODE1_INPUT)) {
588 if (data->pin_cfg[1] & ADT7462_PIN15_INPUT)
589 return 9400;
590 return 13000;
591 }
592 break;
593 case 6:
594 if (!(data->pin_cfg[1] & ADT7462_PIN13_INPUT))
595 return 17200;
596 break;
597 case 7:
598 if (!(data->pin_cfg[1] & ADT7462_PIN8_INPUT))
599 return 62500;
600 break;
601 case 8:
602 switch (MASK_AND_SHIFT(data->pin_cfg[2], ADT7462_PIN26)) {
603 case 0:
604 return 15600;
605 case 1:
606 return 6250;
607 }
608 break;
609 case 9:
610 switch (MASK_AND_SHIFT(data->pin_cfg[2], ADT7462_PIN25)) {
611 case 0:
612 return 17200;
613 case 1:
614 return 6250;
615 }
616 break;
617 case 10:
618 switch (MASK_AND_SHIFT(data->pin_cfg[2], ADT7462_PIN24)) {
619 case 0:
620 return 6250;
621 case 1:
622 return 13000;
623 case 2:
624 return 9400;
625 case 3:
626 return 7800;
627 }
628 case 11:
629 case 12:
630 if (data->pin_cfg[3] >> ADT7462_PIN28_SHIFT ==
631 ADT7462_PIN28_VOLT &&
632 !(data->pin_cfg[0] & ADT7462_VID_INPUT))
633 return 7800;
634 }
635 return 0;
636 }
637
temp_enabled(struct adt7462_data * data,int which)638 static int temp_enabled(struct adt7462_data *data, int which)
639 {
640 switch (which) {
641 case 0:
642 case 2:
643 return 1;
644 case 1:
645 if (data->pin_cfg[0] & ADT7462_DIODE1_INPUT)
646 return 1;
647 break;
648 case 3:
649 if (data->pin_cfg[0] & ADT7462_DIODE3_INPUT)
650 return 1;
651 break;
652 }
653 return 0;
654 }
655
temp_label(struct adt7462_data * data,int which)656 static const char *temp_label(struct adt7462_data *data, int which)
657 {
658 switch (which) {
659 case 0:
660 return "local";
661 case 1:
662 if (data->pin_cfg[0] & ADT7462_DIODE1_INPUT)
663 return "remote1";
664 break;
665 case 2:
666 return "remote2";
667 case 3:
668 if (data->pin_cfg[0] & ADT7462_DIODE3_INPUT)
669 return "remote3";
670 break;
671 }
672 return "N/A";
673 }
674
675 /* Map Trange register values to mC */
676 #define NUM_TRANGE_VALUES 16
677 static const int trange_values[NUM_TRANGE_VALUES] = {
678 2000,
679 2500,
680 3300,
681 4000,
682 5000,
683 6700,
684 8000,
685 10000,
686 13300,
687 16000,
688 20000,
689 26700,
690 32000,
691 40000,
692 53300,
693 80000
694 };
695
find_trange_value(int trange)696 static int find_trange_value(int trange)
697 {
698 int i;
699
700 for (i = 0; i < NUM_TRANGE_VALUES; i++)
701 if (trange_values[i] == trange)
702 return i;
703
704 return -ENODEV;
705 }
706
adt7462_update_device(struct device * dev)707 static struct adt7462_data *adt7462_update_device(struct device *dev)
708 {
709 struct i2c_client *client = to_i2c_client(dev);
710 struct adt7462_data *data = i2c_get_clientdata(client);
711 unsigned long local_jiffies = jiffies;
712 int i;
713
714 mutex_lock(&data->lock);
715 if (time_before(local_jiffies, data->sensors_last_updated +
716 SENSOR_REFRESH_INTERVAL)
717 && data->sensors_valid)
718 goto no_sensor_update;
719
720 for (i = 0; i < ADT7462_TEMP_COUNT; i++) {
721 /*
722 * Reading the fractional register locks the integral
723 * register until both have been read.
724 */
725 data->temp_frac[i] = i2c_smbus_read_byte_data(client,
726 ADT7462_TEMP_REG(i));
727 data->temp[i] = i2c_smbus_read_byte_data(client,
728 ADT7462_TEMP_REG(i) + 1);
729 }
730
731 for (i = 0; i < ADT7462_FAN_COUNT; i++)
732 data->fan[i] = adt7462_read_word_data(client,
733 ADT7462_REG_FAN(i));
734
735 data->fan_enabled = i2c_smbus_read_byte_data(client,
736 ADT7462_REG_FAN_ENABLE);
737
738 for (i = 0; i < ADT7462_PWM_COUNT; i++)
739 data->pwm[i] = i2c_smbus_read_byte_data(client,
740 ADT7462_REG_PWM(i));
741
742 for (i = 0; i < ADT7462_PIN_CFG_REG_COUNT; i++)
743 data->pin_cfg[i] = i2c_smbus_read_byte_data(client,
744 ADT7462_REG_PIN_CFG(i));
745
746 for (i = 0; i < ADT7462_VOLT_COUNT; i++) {
747 int reg = ADT7462_REG_VOLT(data, i);
748 if (!reg)
749 data->voltages[i] = 0;
750 else
751 data->voltages[i] = i2c_smbus_read_byte_data(client,
752 reg);
753 }
754
755 data->alarms[0] = i2c_smbus_read_byte_data(client, ADT7462_REG_ALARM1);
756 data->alarms[1] = i2c_smbus_read_byte_data(client, ADT7462_REG_ALARM2);
757 data->alarms[2] = i2c_smbus_read_byte_data(client, ADT7462_REG_ALARM3);
758 data->alarms[3] = i2c_smbus_read_byte_data(client, ADT7462_REG_ALARM4);
759
760 data->sensors_last_updated = local_jiffies;
761 data->sensors_valid = 1;
762
763 no_sensor_update:
764 if (time_before(local_jiffies, data->limits_last_updated +
765 LIMIT_REFRESH_INTERVAL)
766 && data->limits_valid)
767 goto out;
768
769 for (i = 0; i < ADT7462_TEMP_COUNT; i++) {
770 data->temp_min[i] = i2c_smbus_read_byte_data(client,
771 ADT7462_TEMP_MIN_REG(i));
772 data->temp_max[i] = i2c_smbus_read_byte_data(client,
773 ADT7462_TEMP_MAX_REG(i));
774 }
775
776 for (i = 0; i < ADT7462_FAN_COUNT; i++)
777 data->fan_min[i] = i2c_smbus_read_byte_data(client,
778 ADT7462_REG_FAN_MIN(i));
779
780 for (i = 0; i < ADT7462_VOLT_COUNT; i++) {
781 int reg = ADT7462_REG_VOLT_MAX(data, i);
782 data->volt_max[i] =
783 (reg ? i2c_smbus_read_byte_data(client, reg) : 0);
784
785 reg = ADT7462_REG_VOLT_MIN(data, i);
786 data->volt_min[i] =
787 (reg ? i2c_smbus_read_byte_data(client, reg) : 0);
788 }
789
790 for (i = 0; i < ADT7462_PWM_COUNT; i++) {
791 data->pwm_min[i] = i2c_smbus_read_byte_data(client,
792 ADT7462_REG_PWM_MIN(i));
793 data->pwm_tmin[i] = i2c_smbus_read_byte_data(client,
794 ADT7462_REG_PWM_TMIN(i));
795 data->pwm_trange[i] = i2c_smbus_read_byte_data(client,
796 ADT7462_REG_PWM_TRANGE(i));
797 data->pwm_cfg[i] = i2c_smbus_read_byte_data(client,
798 ADT7462_REG_PWM_CFG(i));
799 }
800
801 data->pwm_max = i2c_smbus_read_byte_data(client, ADT7462_REG_PWM_MAX);
802
803 data->cfg2 = i2c_smbus_read_byte_data(client, ADT7462_REG_CFG2);
804
805 data->limits_last_updated = local_jiffies;
806 data->limits_valid = 1;
807
808 out:
809 mutex_unlock(&data->lock);
810 return data;
811 }
812
show_temp_min(struct device * dev,struct device_attribute * devattr,char * buf)813 static ssize_t show_temp_min(struct device *dev,
814 struct device_attribute *devattr,
815 char *buf)
816 {
817 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
818 struct adt7462_data *data = adt7462_update_device(dev);
819
820 if (!temp_enabled(data, attr->index))
821 return sprintf(buf, "0\n");
822
823 return sprintf(buf, "%d\n", 1000 * (data->temp_min[attr->index] - 64));
824 }
825
set_temp_min(struct device * dev,struct device_attribute * devattr,const char * buf,size_t count)826 static ssize_t set_temp_min(struct device *dev,
827 struct device_attribute *devattr,
828 const char *buf,
829 size_t count)
830 {
831 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
832 struct i2c_client *client = to_i2c_client(dev);
833 struct adt7462_data *data = i2c_get_clientdata(client);
834 long temp;
835
836 if (kstrtol(buf, 10, &temp) || !temp_enabled(data, attr->index))
837 return -EINVAL;
838
839 temp = DIV_ROUND_CLOSEST(temp, 1000) + 64;
840 temp = SENSORS_LIMIT(temp, 0, 255);
841
842 mutex_lock(&data->lock);
843 data->temp_min[attr->index] = temp;
844 i2c_smbus_write_byte_data(client, ADT7462_TEMP_MIN_REG(attr->index),
845 temp);
846 mutex_unlock(&data->lock);
847
848 return count;
849 }
850
show_temp_max(struct device * dev,struct device_attribute * devattr,char * buf)851 static ssize_t show_temp_max(struct device *dev,
852 struct device_attribute *devattr,
853 char *buf)
854 {
855 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
856 struct adt7462_data *data = adt7462_update_device(dev);
857
858 if (!temp_enabled(data, attr->index))
859 return sprintf(buf, "0\n");
860
861 return sprintf(buf, "%d\n", 1000 * (data->temp_max[attr->index] - 64));
862 }
863
set_temp_max(struct device * dev,struct device_attribute * devattr,const char * buf,size_t count)864 static ssize_t set_temp_max(struct device *dev,
865 struct device_attribute *devattr,
866 const char *buf,
867 size_t count)
868 {
869 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
870 struct i2c_client *client = to_i2c_client(dev);
871 struct adt7462_data *data = i2c_get_clientdata(client);
872 long temp;
873
874 if (kstrtol(buf, 10, &temp) || !temp_enabled(data, attr->index))
875 return -EINVAL;
876
877 temp = DIV_ROUND_CLOSEST(temp, 1000) + 64;
878 temp = SENSORS_LIMIT(temp, 0, 255);
879
880 mutex_lock(&data->lock);
881 data->temp_max[attr->index] = temp;
882 i2c_smbus_write_byte_data(client, ADT7462_TEMP_MAX_REG(attr->index),
883 temp);
884 mutex_unlock(&data->lock);
885
886 return count;
887 }
888
show_temp(struct device * dev,struct device_attribute * devattr,char * buf)889 static ssize_t show_temp(struct device *dev, struct device_attribute *devattr,
890 char *buf)
891 {
892 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
893 struct adt7462_data *data = adt7462_update_device(dev);
894 u8 frac = data->temp_frac[attr->index] >> TEMP_FRAC_OFFSET;
895
896 if (!temp_enabled(data, attr->index))
897 return sprintf(buf, "0\n");
898
899 return sprintf(buf, "%d\n", 1000 * (data->temp[attr->index] - 64) +
900 250 * frac);
901 }
902
show_temp_label(struct device * dev,struct device_attribute * devattr,char * buf)903 static ssize_t show_temp_label(struct device *dev,
904 struct device_attribute *devattr,
905 char *buf)
906 {
907 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
908 struct adt7462_data *data = adt7462_update_device(dev);
909
910 return sprintf(buf, "%s\n", temp_label(data, attr->index));
911 }
912
show_volt_max(struct device * dev,struct device_attribute * devattr,char * buf)913 static ssize_t show_volt_max(struct device *dev,
914 struct device_attribute *devattr,
915 char *buf)
916 {
917 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
918 struct adt7462_data *data = adt7462_update_device(dev);
919 int x = voltage_multiplier(data, attr->index);
920
921 x *= data->volt_max[attr->index];
922 x /= 1000; /* convert from uV to mV */
923
924 return sprintf(buf, "%d\n", x);
925 }
926
set_volt_max(struct device * dev,struct device_attribute * devattr,const char * buf,size_t count)927 static ssize_t set_volt_max(struct device *dev,
928 struct device_attribute *devattr,
929 const char *buf,
930 size_t count)
931 {
932 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
933 struct i2c_client *client = to_i2c_client(dev);
934 struct adt7462_data *data = i2c_get_clientdata(client);
935 int x = voltage_multiplier(data, attr->index);
936 long temp;
937
938 if (kstrtol(buf, 10, &temp) || !x)
939 return -EINVAL;
940
941 temp *= 1000; /* convert mV to uV */
942 temp = DIV_ROUND_CLOSEST(temp, x);
943 temp = SENSORS_LIMIT(temp, 0, 255);
944
945 mutex_lock(&data->lock);
946 data->volt_max[attr->index] = temp;
947 i2c_smbus_write_byte_data(client,
948 ADT7462_REG_VOLT_MAX(data, attr->index),
949 temp);
950 mutex_unlock(&data->lock);
951
952 return count;
953 }
954
show_volt_min(struct device * dev,struct device_attribute * devattr,char * buf)955 static ssize_t show_volt_min(struct device *dev,
956 struct device_attribute *devattr,
957 char *buf)
958 {
959 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
960 struct adt7462_data *data = adt7462_update_device(dev);
961 int x = voltage_multiplier(data, attr->index);
962
963 x *= data->volt_min[attr->index];
964 x /= 1000; /* convert from uV to mV */
965
966 return sprintf(buf, "%d\n", x);
967 }
968
set_volt_min(struct device * dev,struct device_attribute * devattr,const char * buf,size_t count)969 static ssize_t set_volt_min(struct device *dev,
970 struct device_attribute *devattr,
971 const char *buf,
972 size_t count)
973 {
974 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
975 struct i2c_client *client = to_i2c_client(dev);
976 struct adt7462_data *data = i2c_get_clientdata(client);
977 int x = voltage_multiplier(data, attr->index);
978 long temp;
979
980 if (kstrtol(buf, 10, &temp) || !x)
981 return -EINVAL;
982
983 temp *= 1000; /* convert mV to uV */
984 temp = DIV_ROUND_CLOSEST(temp, x);
985 temp = SENSORS_LIMIT(temp, 0, 255);
986
987 mutex_lock(&data->lock);
988 data->volt_min[attr->index] = temp;
989 i2c_smbus_write_byte_data(client,
990 ADT7462_REG_VOLT_MIN(data, attr->index),
991 temp);
992 mutex_unlock(&data->lock);
993
994 return count;
995 }
996
show_voltage(struct device * dev,struct device_attribute * devattr,char * buf)997 static ssize_t show_voltage(struct device *dev,
998 struct device_attribute *devattr,
999 char *buf)
1000 {
1001 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
1002 struct adt7462_data *data = adt7462_update_device(dev);
1003 int x = voltage_multiplier(data, attr->index);
1004
1005 x *= data->voltages[attr->index];
1006 x /= 1000; /* convert from uV to mV */
1007
1008 return sprintf(buf, "%d\n", x);
1009 }
1010
show_voltage_label(struct device * dev,struct device_attribute * devattr,char * buf)1011 static ssize_t show_voltage_label(struct device *dev,
1012 struct device_attribute *devattr,
1013 char *buf)
1014 {
1015 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
1016 struct adt7462_data *data = adt7462_update_device(dev);
1017
1018 return sprintf(buf, "%s\n", voltage_label(data, attr->index));
1019 }
1020
show_alarm(struct device * dev,struct device_attribute * devattr,char * buf)1021 static ssize_t show_alarm(struct device *dev,
1022 struct device_attribute *devattr,
1023 char *buf)
1024 {
1025 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
1026 struct adt7462_data *data = adt7462_update_device(dev);
1027 int reg = attr->index >> ADT7462_ALARM_REG_SHIFT;
1028 int mask = attr->index & ADT7462_ALARM_FLAG_MASK;
1029
1030 if (data->alarms[reg] & mask)
1031 return sprintf(buf, "1\n");
1032 else
1033 return sprintf(buf, "0\n");
1034 }
1035
fan_enabled(struct adt7462_data * data,int fan)1036 static int fan_enabled(struct adt7462_data *data, int fan)
1037 {
1038 return data->fan_enabled & (1 << fan);
1039 }
1040
show_fan_min(struct device * dev,struct device_attribute * devattr,char * buf)1041 static ssize_t show_fan_min(struct device *dev,
1042 struct device_attribute *devattr,
1043 char *buf)
1044 {
1045 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
1046 struct adt7462_data *data = adt7462_update_device(dev);
1047 u16 temp;
1048
1049 /* Only the MSB of the min fan period is stored... */
1050 temp = data->fan_min[attr->index];
1051 temp <<= 8;
1052
1053 if (!fan_enabled(data, attr->index) ||
1054 !FAN_DATA_VALID(temp))
1055 return sprintf(buf, "0\n");
1056
1057 return sprintf(buf, "%d\n", FAN_PERIOD_TO_RPM(temp));
1058 }
1059
set_fan_min(struct device * dev,struct device_attribute * devattr,const char * buf,size_t count)1060 static ssize_t set_fan_min(struct device *dev,
1061 struct device_attribute *devattr,
1062 const char *buf, size_t count)
1063 {
1064 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
1065 struct i2c_client *client = to_i2c_client(dev);
1066 struct adt7462_data *data = i2c_get_clientdata(client);
1067 long temp;
1068
1069 if (kstrtol(buf, 10, &temp) || !temp ||
1070 !fan_enabled(data, attr->index))
1071 return -EINVAL;
1072
1073 temp = FAN_RPM_TO_PERIOD(temp);
1074 temp >>= 8;
1075 temp = SENSORS_LIMIT(temp, 1, 255);
1076
1077 mutex_lock(&data->lock);
1078 data->fan_min[attr->index] = temp;
1079 i2c_smbus_write_byte_data(client, ADT7462_REG_FAN_MIN(attr->index),
1080 temp);
1081 mutex_unlock(&data->lock);
1082
1083 return count;
1084 }
1085
show_fan(struct device * dev,struct device_attribute * devattr,char * buf)1086 static ssize_t show_fan(struct device *dev, struct device_attribute *devattr,
1087 char *buf)
1088 {
1089 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
1090 struct adt7462_data *data = adt7462_update_device(dev);
1091
1092 if (!fan_enabled(data, attr->index) ||
1093 !FAN_DATA_VALID(data->fan[attr->index]))
1094 return sprintf(buf, "0\n");
1095
1096 return sprintf(buf, "%d\n",
1097 FAN_PERIOD_TO_RPM(data->fan[attr->index]));
1098 }
1099
show_force_pwm_max(struct device * dev,struct device_attribute * devattr,char * buf)1100 static ssize_t show_force_pwm_max(struct device *dev,
1101 struct device_attribute *devattr,
1102 char *buf)
1103 {
1104 struct adt7462_data *data = adt7462_update_device(dev);
1105 return sprintf(buf, "%d\n", (data->cfg2 & ADT7462_FSPD_MASK ? 1 : 0));
1106 }
1107
set_force_pwm_max(struct device * dev,struct device_attribute * devattr,const char * buf,size_t count)1108 static ssize_t set_force_pwm_max(struct device *dev,
1109 struct device_attribute *devattr,
1110 const char *buf,
1111 size_t count)
1112 {
1113 struct i2c_client *client = to_i2c_client(dev);
1114 struct adt7462_data *data = i2c_get_clientdata(client);
1115 long temp;
1116 u8 reg;
1117
1118 if (kstrtol(buf, 10, &temp))
1119 return -EINVAL;
1120
1121 mutex_lock(&data->lock);
1122 reg = i2c_smbus_read_byte_data(client, ADT7462_REG_CFG2);
1123 if (temp)
1124 reg |= ADT7462_FSPD_MASK;
1125 else
1126 reg &= ~ADT7462_FSPD_MASK;
1127 data->cfg2 = reg;
1128 i2c_smbus_write_byte_data(client, ADT7462_REG_CFG2, reg);
1129 mutex_unlock(&data->lock);
1130
1131 return count;
1132 }
1133
show_pwm(struct device * dev,struct device_attribute * devattr,char * buf)1134 static ssize_t show_pwm(struct device *dev, struct device_attribute *devattr,
1135 char *buf)
1136 {
1137 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
1138 struct adt7462_data *data = adt7462_update_device(dev);
1139 return sprintf(buf, "%d\n", data->pwm[attr->index]);
1140 }
1141
set_pwm(struct device * dev,struct device_attribute * devattr,const char * buf,size_t count)1142 static ssize_t set_pwm(struct device *dev, struct device_attribute *devattr,
1143 const char *buf, size_t count)
1144 {
1145 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
1146 struct i2c_client *client = to_i2c_client(dev);
1147 struct adt7462_data *data = i2c_get_clientdata(client);
1148 long temp;
1149
1150 if (kstrtol(buf, 10, &temp))
1151 return -EINVAL;
1152
1153 temp = SENSORS_LIMIT(temp, 0, 255);
1154
1155 mutex_lock(&data->lock);
1156 data->pwm[attr->index] = temp;
1157 i2c_smbus_write_byte_data(client, ADT7462_REG_PWM(attr->index), temp);
1158 mutex_unlock(&data->lock);
1159
1160 return count;
1161 }
1162
show_pwm_max(struct device * dev,struct device_attribute * devattr,char * buf)1163 static ssize_t show_pwm_max(struct device *dev,
1164 struct device_attribute *devattr,
1165 char *buf)
1166 {
1167 struct adt7462_data *data = adt7462_update_device(dev);
1168 return sprintf(buf, "%d\n", data->pwm_max);
1169 }
1170
set_pwm_max(struct device * dev,struct device_attribute * devattr,const char * buf,size_t count)1171 static ssize_t set_pwm_max(struct device *dev,
1172 struct device_attribute *devattr,
1173 const char *buf,
1174 size_t count)
1175 {
1176 struct i2c_client *client = to_i2c_client(dev);
1177 struct adt7462_data *data = i2c_get_clientdata(client);
1178 long temp;
1179
1180 if (kstrtol(buf, 10, &temp))
1181 return -EINVAL;
1182
1183 temp = SENSORS_LIMIT(temp, 0, 255);
1184
1185 mutex_lock(&data->lock);
1186 data->pwm_max = temp;
1187 i2c_smbus_write_byte_data(client, ADT7462_REG_PWM_MAX, temp);
1188 mutex_unlock(&data->lock);
1189
1190 return count;
1191 }
1192
show_pwm_min(struct device * dev,struct device_attribute * devattr,char * buf)1193 static ssize_t show_pwm_min(struct device *dev,
1194 struct device_attribute *devattr,
1195 char *buf)
1196 {
1197 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
1198 struct adt7462_data *data = adt7462_update_device(dev);
1199 return sprintf(buf, "%d\n", data->pwm_min[attr->index]);
1200 }
1201
set_pwm_min(struct device * dev,struct device_attribute * devattr,const char * buf,size_t count)1202 static ssize_t set_pwm_min(struct device *dev,
1203 struct device_attribute *devattr,
1204 const char *buf,
1205 size_t count)
1206 {
1207 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
1208 struct i2c_client *client = to_i2c_client(dev);
1209 struct adt7462_data *data = i2c_get_clientdata(client);
1210 long temp;
1211
1212 if (kstrtol(buf, 10, &temp))
1213 return -EINVAL;
1214
1215 temp = SENSORS_LIMIT(temp, 0, 255);
1216
1217 mutex_lock(&data->lock);
1218 data->pwm_min[attr->index] = temp;
1219 i2c_smbus_write_byte_data(client, ADT7462_REG_PWM_MIN(attr->index),
1220 temp);
1221 mutex_unlock(&data->lock);
1222
1223 return count;
1224 }
1225
show_pwm_hyst(struct device * dev,struct device_attribute * devattr,char * buf)1226 static ssize_t show_pwm_hyst(struct device *dev,
1227 struct device_attribute *devattr,
1228 char *buf)
1229 {
1230 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
1231 struct adt7462_data *data = adt7462_update_device(dev);
1232 return sprintf(buf, "%d\n", 1000 *
1233 (data->pwm_trange[attr->index] & ADT7462_PWM_HYST_MASK));
1234 }
1235
set_pwm_hyst(struct device * dev,struct device_attribute * devattr,const char * buf,size_t count)1236 static ssize_t set_pwm_hyst(struct device *dev,
1237 struct device_attribute *devattr,
1238 const char *buf,
1239 size_t count)
1240 {
1241 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
1242 struct i2c_client *client = to_i2c_client(dev);
1243 struct adt7462_data *data = i2c_get_clientdata(client);
1244 long temp;
1245
1246 if (kstrtol(buf, 10, &temp))
1247 return -EINVAL;
1248
1249 temp = DIV_ROUND_CLOSEST(temp, 1000);
1250 temp = SENSORS_LIMIT(temp, 0, 15);
1251
1252 /* package things up */
1253 temp &= ADT7462_PWM_HYST_MASK;
1254 temp |= data->pwm_trange[attr->index] & ADT7462_PWM_RANGE_MASK;
1255
1256 mutex_lock(&data->lock);
1257 data->pwm_trange[attr->index] = temp;
1258 i2c_smbus_write_byte_data(client, ADT7462_REG_PWM_TRANGE(attr->index),
1259 temp);
1260 mutex_unlock(&data->lock);
1261
1262 return count;
1263 }
1264
show_pwm_tmax(struct device * dev,struct device_attribute * devattr,char * buf)1265 static ssize_t show_pwm_tmax(struct device *dev,
1266 struct device_attribute *devattr,
1267 char *buf)
1268 {
1269 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
1270 struct adt7462_data *data = adt7462_update_device(dev);
1271
1272 /* tmax = tmin + trange */
1273 int trange = trange_values[data->pwm_trange[attr->index] >>
1274 ADT7462_PWM_RANGE_SHIFT];
1275 int tmin = (data->pwm_tmin[attr->index] - 64) * 1000;
1276
1277 return sprintf(buf, "%d\n", tmin + trange);
1278 }
1279
set_pwm_tmax(struct device * dev,struct device_attribute * devattr,const char * buf,size_t count)1280 static ssize_t set_pwm_tmax(struct device *dev,
1281 struct device_attribute *devattr,
1282 const char *buf,
1283 size_t count)
1284 {
1285 int temp;
1286 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
1287 struct i2c_client *client = to_i2c_client(dev);
1288 struct adt7462_data *data = i2c_get_clientdata(client);
1289 int tmin, trange_value;
1290 long trange;
1291
1292 if (kstrtol(buf, 10, &trange))
1293 return -EINVAL;
1294
1295 /* trange = tmax - tmin */
1296 tmin = (data->pwm_tmin[attr->index] - 64) * 1000;
1297 trange_value = find_trange_value(trange - tmin);
1298
1299 if (trange_value < 0)
1300 return -EINVAL;
1301
1302 temp = trange_value << ADT7462_PWM_RANGE_SHIFT;
1303 temp |= data->pwm_trange[attr->index] & ADT7462_PWM_HYST_MASK;
1304
1305 mutex_lock(&data->lock);
1306 data->pwm_trange[attr->index] = temp;
1307 i2c_smbus_write_byte_data(client, ADT7462_REG_PWM_TRANGE(attr->index),
1308 temp);
1309 mutex_unlock(&data->lock);
1310
1311 return count;
1312 }
1313
show_pwm_tmin(struct device * dev,struct device_attribute * devattr,char * buf)1314 static ssize_t show_pwm_tmin(struct device *dev,
1315 struct device_attribute *devattr,
1316 char *buf)
1317 {
1318 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
1319 struct adt7462_data *data = adt7462_update_device(dev);
1320 return sprintf(buf, "%d\n", 1000 * (data->pwm_tmin[attr->index] - 64));
1321 }
1322
set_pwm_tmin(struct device * dev,struct device_attribute * devattr,const char * buf,size_t count)1323 static ssize_t set_pwm_tmin(struct device *dev,
1324 struct device_attribute *devattr,
1325 const char *buf,
1326 size_t count)
1327 {
1328 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
1329 struct i2c_client *client = to_i2c_client(dev);
1330 struct adt7462_data *data = i2c_get_clientdata(client);
1331 long temp;
1332
1333 if (kstrtol(buf, 10, &temp))
1334 return -EINVAL;
1335
1336 temp = DIV_ROUND_CLOSEST(temp, 1000) + 64;
1337 temp = SENSORS_LIMIT(temp, 0, 255);
1338
1339 mutex_lock(&data->lock);
1340 data->pwm_tmin[attr->index] = temp;
1341 i2c_smbus_write_byte_data(client, ADT7462_REG_PWM_TMIN(attr->index),
1342 temp);
1343 mutex_unlock(&data->lock);
1344
1345 return count;
1346 }
1347
show_pwm_auto(struct device * dev,struct device_attribute * devattr,char * buf)1348 static ssize_t show_pwm_auto(struct device *dev,
1349 struct device_attribute *devattr,
1350 char *buf)
1351 {
1352 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
1353 struct adt7462_data *data = adt7462_update_device(dev);
1354 int cfg = data->pwm_cfg[attr->index] >> ADT7462_PWM_CHANNEL_SHIFT;
1355
1356 switch (cfg) {
1357 case 4: /* off */
1358 return sprintf(buf, "0\n");
1359 case 7: /* manual */
1360 return sprintf(buf, "1\n");
1361 default: /* automatic */
1362 return sprintf(buf, "2\n");
1363 }
1364 }
1365
set_pwm_channel(struct i2c_client * client,struct adt7462_data * data,int which,int value)1366 static void set_pwm_channel(struct i2c_client *client,
1367 struct adt7462_data *data,
1368 int which,
1369 int value)
1370 {
1371 int temp = data->pwm_cfg[which] & ~ADT7462_PWM_CHANNEL_MASK;
1372 temp |= value << ADT7462_PWM_CHANNEL_SHIFT;
1373
1374 mutex_lock(&data->lock);
1375 data->pwm_cfg[which] = temp;
1376 i2c_smbus_write_byte_data(client, ADT7462_REG_PWM_CFG(which), temp);
1377 mutex_unlock(&data->lock);
1378 }
1379
set_pwm_auto(struct device * dev,struct device_attribute * devattr,const char * buf,size_t count)1380 static ssize_t set_pwm_auto(struct device *dev,
1381 struct device_attribute *devattr,
1382 const char *buf,
1383 size_t count)
1384 {
1385 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
1386 struct i2c_client *client = to_i2c_client(dev);
1387 struct adt7462_data *data = i2c_get_clientdata(client);
1388 long temp;
1389
1390 if (kstrtol(buf, 10, &temp))
1391 return -EINVAL;
1392
1393 switch (temp) {
1394 case 0: /* off */
1395 set_pwm_channel(client, data, attr->index, 4);
1396 return count;
1397 case 1: /* manual */
1398 set_pwm_channel(client, data, attr->index, 7);
1399 return count;
1400 default:
1401 return -EINVAL;
1402 }
1403 }
1404
show_pwm_auto_temp(struct device * dev,struct device_attribute * devattr,char * buf)1405 static ssize_t show_pwm_auto_temp(struct device *dev,
1406 struct device_attribute *devattr,
1407 char *buf)
1408 {
1409 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
1410 struct adt7462_data *data = adt7462_update_device(dev);
1411 int channel = data->pwm_cfg[attr->index] >> ADT7462_PWM_CHANNEL_SHIFT;
1412
1413 switch (channel) {
1414 case 0: /* temp[1234] only */
1415 case 1:
1416 case 2:
1417 case 3:
1418 return sprintf(buf, "%d\n", (1 << channel));
1419 case 5: /* temp1 & temp4 */
1420 return sprintf(buf, "9\n");
1421 case 6:
1422 return sprintf(buf, "15\n");
1423 default:
1424 return sprintf(buf, "0\n");
1425 }
1426 }
1427
cvt_auto_temp(int input)1428 static int cvt_auto_temp(int input)
1429 {
1430 if (input == 0xF)
1431 return 6;
1432 if (input == 0x9)
1433 return 5;
1434 if (input < 1 || !is_power_of_2(input))
1435 return -EINVAL;
1436 return ilog2(input);
1437 }
1438
set_pwm_auto_temp(struct device * dev,struct device_attribute * devattr,const char * buf,size_t count)1439 static ssize_t set_pwm_auto_temp(struct device *dev,
1440 struct device_attribute *devattr,
1441 const char *buf,
1442 size_t count)
1443 {
1444 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
1445 struct i2c_client *client = to_i2c_client(dev);
1446 struct adt7462_data *data = i2c_get_clientdata(client);
1447 long temp;
1448
1449 if (kstrtol(buf, 10, &temp))
1450 return -EINVAL;
1451
1452 temp = cvt_auto_temp(temp);
1453 if (temp < 0)
1454 return temp;
1455
1456 set_pwm_channel(client, data, attr->index, temp);
1457
1458 return count;
1459 }
1460
1461 static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp_max,
1462 set_temp_max, 0);
1463 static SENSOR_DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp_max,
1464 set_temp_max, 1);
1465 static SENSOR_DEVICE_ATTR(temp3_max, S_IWUSR | S_IRUGO, show_temp_max,
1466 set_temp_max, 2);
1467 static SENSOR_DEVICE_ATTR(temp4_max, S_IWUSR | S_IRUGO, show_temp_max,
1468 set_temp_max, 3);
1469
1470 static SENSOR_DEVICE_ATTR(temp1_min, S_IWUSR | S_IRUGO, show_temp_min,
1471 set_temp_min, 0);
1472 static SENSOR_DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_temp_min,
1473 set_temp_min, 1);
1474 static SENSOR_DEVICE_ATTR(temp3_min, S_IWUSR | S_IRUGO, show_temp_min,
1475 set_temp_min, 2);
1476 static SENSOR_DEVICE_ATTR(temp4_min, S_IWUSR | S_IRUGO, show_temp_min,
1477 set_temp_min, 3);
1478
1479 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0);
1480 static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1);
1481 static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 2);
1482 static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO, show_temp, NULL, 3);
1483
1484 static SENSOR_DEVICE_ATTR(temp1_label, S_IRUGO, show_temp_label, NULL, 0);
1485 static SENSOR_DEVICE_ATTR(temp2_label, S_IRUGO, show_temp_label, NULL, 1);
1486 static SENSOR_DEVICE_ATTR(temp3_label, S_IRUGO, show_temp_label, NULL, 2);
1487 static SENSOR_DEVICE_ATTR(temp4_label, S_IRUGO, show_temp_label, NULL, 3);
1488
1489 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL,
1490 ADT7462_ALARM1 | ADT7462_LT_ALARM);
1491 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL,
1492 ADT7462_ALARM1 | ADT7462_R1T_ALARM);
1493 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL,
1494 ADT7462_ALARM1 | ADT7462_R2T_ALARM);
1495 static SENSOR_DEVICE_ATTR(temp4_alarm, S_IRUGO, show_alarm, NULL,
1496 ADT7462_ALARM1 | ADT7462_R3T_ALARM);
1497
1498 static SENSOR_DEVICE_ATTR(in1_max, S_IWUSR | S_IRUGO, show_volt_max,
1499 set_volt_max, 0);
1500 static SENSOR_DEVICE_ATTR(in2_max, S_IWUSR | S_IRUGO, show_volt_max,
1501 set_volt_max, 1);
1502 static SENSOR_DEVICE_ATTR(in3_max, S_IWUSR | S_IRUGO, show_volt_max,
1503 set_volt_max, 2);
1504 static SENSOR_DEVICE_ATTR(in4_max, S_IWUSR | S_IRUGO, show_volt_max,
1505 set_volt_max, 3);
1506 static SENSOR_DEVICE_ATTR(in5_max, S_IWUSR | S_IRUGO, show_volt_max,
1507 set_volt_max, 4);
1508 static SENSOR_DEVICE_ATTR(in6_max, S_IWUSR | S_IRUGO, show_volt_max,
1509 set_volt_max, 5);
1510 static SENSOR_DEVICE_ATTR(in7_max, S_IWUSR | S_IRUGO, show_volt_max,
1511 set_volt_max, 6);
1512 static SENSOR_DEVICE_ATTR(in8_max, S_IWUSR | S_IRUGO, show_volt_max,
1513 set_volt_max, 7);
1514 static SENSOR_DEVICE_ATTR(in9_max, S_IWUSR | S_IRUGO, show_volt_max,
1515 set_volt_max, 8);
1516 static SENSOR_DEVICE_ATTR(in10_max, S_IWUSR | S_IRUGO, show_volt_max,
1517 set_volt_max, 9);
1518 static SENSOR_DEVICE_ATTR(in11_max, S_IWUSR | S_IRUGO, show_volt_max,
1519 set_volt_max, 10);
1520 static SENSOR_DEVICE_ATTR(in12_max, S_IWUSR | S_IRUGO, show_volt_max,
1521 set_volt_max, 11);
1522 static SENSOR_DEVICE_ATTR(in13_max, S_IWUSR | S_IRUGO, show_volt_max,
1523 set_volt_max, 12);
1524
1525 static SENSOR_DEVICE_ATTR(in1_min, S_IWUSR | S_IRUGO, show_volt_min,
1526 set_volt_min, 0);
1527 static SENSOR_DEVICE_ATTR(in2_min, S_IWUSR | S_IRUGO, show_volt_min,
1528 set_volt_min, 1);
1529 static SENSOR_DEVICE_ATTR(in3_min, S_IWUSR | S_IRUGO, show_volt_min,
1530 set_volt_min, 2);
1531 static SENSOR_DEVICE_ATTR(in4_min, S_IWUSR | S_IRUGO, show_volt_min,
1532 set_volt_min, 3);
1533 static SENSOR_DEVICE_ATTR(in5_min, S_IWUSR | S_IRUGO, show_volt_min,
1534 set_volt_min, 4);
1535 static SENSOR_DEVICE_ATTR(in6_min, S_IWUSR | S_IRUGO, show_volt_min,
1536 set_volt_min, 5);
1537 static SENSOR_DEVICE_ATTR(in7_min, S_IWUSR | S_IRUGO, show_volt_min,
1538 set_volt_min, 6);
1539 static SENSOR_DEVICE_ATTR(in8_min, S_IWUSR | S_IRUGO, show_volt_min,
1540 set_volt_min, 7);
1541 static SENSOR_DEVICE_ATTR(in9_min, S_IWUSR | S_IRUGO, show_volt_min,
1542 set_volt_min, 8);
1543 static SENSOR_DEVICE_ATTR(in10_min, S_IWUSR | S_IRUGO, show_volt_min,
1544 set_volt_min, 9);
1545 static SENSOR_DEVICE_ATTR(in11_min, S_IWUSR | S_IRUGO, show_volt_min,
1546 set_volt_min, 10);
1547 static SENSOR_DEVICE_ATTR(in12_min, S_IWUSR | S_IRUGO, show_volt_min,
1548 set_volt_min, 11);
1549 static SENSOR_DEVICE_ATTR(in13_min, S_IWUSR | S_IRUGO, show_volt_min,
1550 set_volt_min, 12);
1551
1552 static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_voltage, NULL, 0);
1553 static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_voltage, NULL, 1);
1554 static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_voltage, NULL, 2);
1555 static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, show_voltage, NULL, 3);
1556 static SENSOR_DEVICE_ATTR(in5_input, S_IRUGO, show_voltage, NULL, 4);
1557 static SENSOR_DEVICE_ATTR(in6_input, S_IRUGO, show_voltage, NULL, 5);
1558 static SENSOR_DEVICE_ATTR(in7_input, S_IRUGO, show_voltage, NULL, 6);
1559 static SENSOR_DEVICE_ATTR(in8_input, S_IRUGO, show_voltage, NULL, 7);
1560 static SENSOR_DEVICE_ATTR(in9_input, S_IRUGO, show_voltage, NULL, 8);
1561 static SENSOR_DEVICE_ATTR(in10_input, S_IRUGO, show_voltage, NULL, 9);
1562 static SENSOR_DEVICE_ATTR(in11_input, S_IRUGO, show_voltage, NULL, 10);
1563 static SENSOR_DEVICE_ATTR(in12_input, S_IRUGO, show_voltage, NULL, 11);
1564 static SENSOR_DEVICE_ATTR(in13_input, S_IRUGO, show_voltage, NULL, 12);
1565
1566 static SENSOR_DEVICE_ATTR(in1_label, S_IRUGO, show_voltage_label, NULL, 0);
1567 static SENSOR_DEVICE_ATTR(in2_label, S_IRUGO, show_voltage_label, NULL, 1);
1568 static SENSOR_DEVICE_ATTR(in3_label, S_IRUGO, show_voltage_label, NULL, 2);
1569 static SENSOR_DEVICE_ATTR(in4_label, S_IRUGO, show_voltage_label, NULL, 3);
1570 static SENSOR_DEVICE_ATTR(in5_label, S_IRUGO, show_voltage_label, NULL, 4);
1571 static SENSOR_DEVICE_ATTR(in6_label, S_IRUGO, show_voltage_label, NULL, 5);
1572 static SENSOR_DEVICE_ATTR(in7_label, S_IRUGO, show_voltage_label, NULL, 6);
1573 static SENSOR_DEVICE_ATTR(in8_label, S_IRUGO, show_voltage_label, NULL, 7);
1574 static SENSOR_DEVICE_ATTR(in9_label, S_IRUGO, show_voltage_label, NULL, 8);
1575 static SENSOR_DEVICE_ATTR(in10_label, S_IRUGO, show_voltage_label, NULL, 9);
1576 static SENSOR_DEVICE_ATTR(in11_label, S_IRUGO, show_voltage_label, NULL, 10);
1577 static SENSOR_DEVICE_ATTR(in12_label, S_IRUGO, show_voltage_label, NULL, 11);
1578 static SENSOR_DEVICE_ATTR(in13_label, S_IRUGO, show_voltage_label, NULL, 12);
1579
1580 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL,
1581 ADT7462_ALARM2 | ADT7462_V0_ALARM);
1582 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL,
1583 ADT7462_ALARM2 | ADT7462_V7_ALARM);
1584 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL,
1585 ADT7462_ALARM2 | ADT7462_V2_ALARM);
1586 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL,
1587 ADT7462_ALARM2 | ADT7462_V6_ALARM);
1588 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL,
1589 ADT7462_ALARM2 | ADT7462_V5_ALARM);
1590 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL,
1591 ADT7462_ALARM2 | ADT7462_V4_ALARM);
1592 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL,
1593 ADT7462_ALARM2 | ADT7462_V3_ALARM);
1594 static SENSOR_DEVICE_ATTR(in8_alarm, S_IRUGO, show_alarm, NULL,
1595 ADT7462_ALARM2 | ADT7462_V1_ALARM);
1596 static SENSOR_DEVICE_ATTR(in9_alarm, S_IRUGO, show_alarm, NULL,
1597 ADT7462_ALARM3 | ADT7462_V10_ALARM);
1598 static SENSOR_DEVICE_ATTR(in10_alarm, S_IRUGO, show_alarm, NULL,
1599 ADT7462_ALARM3 | ADT7462_V9_ALARM);
1600 static SENSOR_DEVICE_ATTR(in11_alarm, S_IRUGO, show_alarm, NULL,
1601 ADT7462_ALARM3 | ADT7462_V8_ALARM);
1602 static SENSOR_DEVICE_ATTR(in12_alarm, S_IRUGO, show_alarm, NULL,
1603 ADT7462_ALARM3 | ADT7462_V11_ALARM);
1604 static SENSOR_DEVICE_ATTR(in13_alarm, S_IRUGO, show_alarm, NULL,
1605 ADT7462_ALARM3 | ADT7462_V12_ALARM);
1606
1607 static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan_min,
1608 set_fan_min, 0);
1609 static SENSOR_DEVICE_ATTR(fan2_min, S_IWUSR | S_IRUGO, show_fan_min,
1610 set_fan_min, 1);
1611 static SENSOR_DEVICE_ATTR(fan3_min, S_IWUSR | S_IRUGO, show_fan_min,
1612 set_fan_min, 2);
1613 static SENSOR_DEVICE_ATTR(fan4_min, S_IWUSR | S_IRUGO, show_fan_min,
1614 set_fan_min, 3);
1615 static SENSOR_DEVICE_ATTR(fan5_min, S_IWUSR | S_IRUGO, show_fan_min,
1616 set_fan_min, 4);
1617 static SENSOR_DEVICE_ATTR(fan6_min, S_IWUSR | S_IRUGO, show_fan_min,
1618 set_fan_min, 5);
1619 static SENSOR_DEVICE_ATTR(fan7_min, S_IWUSR | S_IRUGO, show_fan_min,
1620 set_fan_min, 6);
1621 static SENSOR_DEVICE_ATTR(fan8_min, S_IWUSR | S_IRUGO, show_fan_min,
1622 set_fan_min, 7);
1623
1624 static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0);
1625 static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1);
1626 static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2);
1627 static SENSOR_DEVICE_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 3);
1628 static SENSOR_DEVICE_ATTR(fan5_input, S_IRUGO, show_fan, NULL, 4);
1629 static SENSOR_DEVICE_ATTR(fan6_input, S_IRUGO, show_fan, NULL, 5);
1630 static SENSOR_DEVICE_ATTR(fan7_input, S_IRUGO, show_fan, NULL, 6);
1631 static SENSOR_DEVICE_ATTR(fan8_input, S_IRUGO, show_fan, NULL, 7);
1632
1633 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL,
1634 ADT7462_ALARM4 | ADT7462_F0_ALARM);
1635 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL,
1636 ADT7462_ALARM4 | ADT7462_F1_ALARM);
1637 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL,
1638 ADT7462_ALARM4 | ADT7462_F2_ALARM);
1639 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL,
1640 ADT7462_ALARM4 | ADT7462_F3_ALARM);
1641 static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL,
1642 ADT7462_ALARM4 | ADT7462_F4_ALARM);
1643 static SENSOR_DEVICE_ATTR(fan6_alarm, S_IRUGO, show_alarm, NULL,
1644 ADT7462_ALARM4 | ADT7462_F5_ALARM);
1645 static SENSOR_DEVICE_ATTR(fan7_alarm, S_IRUGO, show_alarm, NULL,
1646 ADT7462_ALARM4 | ADT7462_F6_ALARM);
1647 static SENSOR_DEVICE_ATTR(fan8_alarm, S_IRUGO, show_alarm, NULL,
1648 ADT7462_ALARM4 | ADT7462_F7_ALARM);
1649
1650 static SENSOR_DEVICE_ATTR(force_pwm_max, S_IWUSR | S_IRUGO,
1651 show_force_pwm_max, set_force_pwm_max, 0);
1652
1653 static SENSOR_DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 0);
1654 static SENSOR_DEVICE_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 1);
1655 static SENSOR_DEVICE_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 2);
1656 static SENSOR_DEVICE_ATTR(pwm4, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 3);
1657
1658 static SENSOR_DEVICE_ATTR(pwm1_auto_point1_pwm, S_IWUSR | S_IRUGO,
1659 show_pwm_min, set_pwm_min, 0);
1660 static SENSOR_DEVICE_ATTR(pwm2_auto_point1_pwm, S_IWUSR | S_IRUGO,
1661 show_pwm_min, set_pwm_min, 1);
1662 static SENSOR_DEVICE_ATTR(pwm3_auto_point1_pwm, S_IWUSR | S_IRUGO,
1663 show_pwm_min, set_pwm_min, 2);
1664 static SENSOR_DEVICE_ATTR(pwm4_auto_point1_pwm, S_IWUSR | S_IRUGO,
1665 show_pwm_min, set_pwm_min, 3);
1666
1667 static SENSOR_DEVICE_ATTR(pwm1_auto_point2_pwm, S_IWUSR | S_IRUGO,
1668 show_pwm_max, set_pwm_max, 0);
1669 static SENSOR_DEVICE_ATTR(pwm2_auto_point2_pwm, S_IWUSR | S_IRUGO,
1670 show_pwm_max, set_pwm_max, 1);
1671 static SENSOR_DEVICE_ATTR(pwm3_auto_point2_pwm, S_IWUSR | S_IRUGO,
1672 show_pwm_max, set_pwm_max, 2);
1673 static SENSOR_DEVICE_ATTR(pwm4_auto_point2_pwm, S_IWUSR | S_IRUGO,
1674 show_pwm_max, set_pwm_max, 3);
1675
1676 static SENSOR_DEVICE_ATTR(temp1_auto_point1_hyst, S_IWUSR | S_IRUGO,
1677 show_pwm_hyst, set_pwm_hyst, 0);
1678 static SENSOR_DEVICE_ATTR(temp2_auto_point1_hyst, S_IWUSR | S_IRUGO,
1679 show_pwm_hyst, set_pwm_hyst, 1);
1680 static SENSOR_DEVICE_ATTR(temp3_auto_point1_hyst, S_IWUSR | S_IRUGO,
1681 show_pwm_hyst, set_pwm_hyst, 2);
1682 static SENSOR_DEVICE_ATTR(temp4_auto_point1_hyst, S_IWUSR | S_IRUGO,
1683 show_pwm_hyst, set_pwm_hyst, 3);
1684
1685 static SENSOR_DEVICE_ATTR(temp1_auto_point2_hyst, S_IWUSR | S_IRUGO,
1686 show_pwm_hyst, set_pwm_hyst, 0);
1687 static SENSOR_DEVICE_ATTR(temp2_auto_point2_hyst, S_IWUSR | S_IRUGO,
1688 show_pwm_hyst, set_pwm_hyst, 1);
1689 static SENSOR_DEVICE_ATTR(temp3_auto_point2_hyst, S_IWUSR | S_IRUGO,
1690 show_pwm_hyst, set_pwm_hyst, 2);
1691 static SENSOR_DEVICE_ATTR(temp4_auto_point2_hyst, S_IWUSR | S_IRUGO,
1692 show_pwm_hyst, set_pwm_hyst, 3);
1693
1694 static SENSOR_DEVICE_ATTR(temp1_auto_point1_temp, S_IWUSR | S_IRUGO,
1695 show_pwm_tmin, set_pwm_tmin, 0);
1696 static SENSOR_DEVICE_ATTR(temp2_auto_point1_temp, S_IWUSR | S_IRUGO,
1697 show_pwm_tmin, set_pwm_tmin, 1);
1698 static SENSOR_DEVICE_ATTR(temp3_auto_point1_temp, S_IWUSR | S_IRUGO,
1699 show_pwm_tmin, set_pwm_tmin, 2);
1700 static SENSOR_DEVICE_ATTR(temp4_auto_point1_temp, S_IWUSR | S_IRUGO,
1701 show_pwm_tmin, set_pwm_tmin, 3);
1702
1703 static SENSOR_DEVICE_ATTR(temp1_auto_point2_temp, S_IWUSR | S_IRUGO,
1704 show_pwm_tmax, set_pwm_tmax, 0);
1705 static SENSOR_DEVICE_ATTR(temp2_auto_point2_temp, S_IWUSR | S_IRUGO,
1706 show_pwm_tmax, set_pwm_tmax, 1);
1707 static SENSOR_DEVICE_ATTR(temp3_auto_point2_temp, S_IWUSR | S_IRUGO,
1708 show_pwm_tmax, set_pwm_tmax, 2);
1709 static SENSOR_DEVICE_ATTR(temp4_auto_point2_temp, S_IWUSR | S_IRUGO,
1710 show_pwm_tmax, set_pwm_tmax, 3);
1711
1712 static SENSOR_DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO, show_pwm_auto,
1713 set_pwm_auto, 0);
1714 static SENSOR_DEVICE_ATTR(pwm2_enable, S_IWUSR | S_IRUGO, show_pwm_auto,
1715 set_pwm_auto, 1);
1716 static SENSOR_DEVICE_ATTR(pwm3_enable, S_IWUSR | S_IRUGO, show_pwm_auto,
1717 set_pwm_auto, 2);
1718 static SENSOR_DEVICE_ATTR(pwm4_enable, S_IWUSR | S_IRUGO, show_pwm_auto,
1719 set_pwm_auto, 3);
1720
1721 static SENSOR_DEVICE_ATTR(pwm1_auto_channels_temp, S_IWUSR | S_IRUGO,
1722 show_pwm_auto_temp, set_pwm_auto_temp, 0);
1723 static SENSOR_DEVICE_ATTR(pwm2_auto_channels_temp, S_IWUSR | S_IRUGO,
1724 show_pwm_auto_temp, set_pwm_auto_temp, 1);
1725 static SENSOR_DEVICE_ATTR(pwm3_auto_channels_temp, S_IWUSR | S_IRUGO,
1726 show_pwm_auto_temp, set_pwm_auto_temp, 2);
1727 static SENSOR_DEVICE_ATTR(pwm4_auto_channels_temp, S_IWUSR | S_IRUGO,
1728 show_pwm_auto_temp, set_pwm_auto_temp, 3);
1729
1730 static struct attribute *adt7462_attr[] = {
1731 &sensor_dev_attr_temp1_max.dev_attr.attr,
1732 &sensor_dev_attr_temp2_max.dev_attr.attr,
1733 &sensor_dev_attr_temp3_max.dev_attr.attr,
1734 &sensor_dev_attr_temp4_max.dev_attr.attr,
1735
1736 &sensor_dev_attr_temp1_min.dev_attr.attr,
1737 &sensor_dev_attr_temp2_min.dev_attr.attr,
1738 &sensor_dev_attr_temp3_min.dev_attr.attr,
1739 &sensor_dev_attr_temp4_min.dev_attr.attr,
1740
1741 &sensor_dev_attr_temp1_input.dev_attr.attr,
1742 &sensor_dev_attr_temp2_input.dev_attr.attr,
1743 &sensor_dev_attr_temp3_input.dev_attr.attr,
1744 &sensor_dev_attr_temp4_input.dev_attr.attr,
1745
1746 &sensor_dev_attr_temp1_label.dev_attr.attr,
1747 &sensor_dev_attr_temp2_label.dev_attr.attr,
1748 &sensor_dev_attr_temp3_label.dev_attr.attr,
1749 &sensor_dev_attr_temp4_label.dev_attr.attr,
1750
1751 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1752 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1753 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1754 &sensor_dev_attr_temp4_alarm.dev_attr.attr,
1755
1756 &sensor_dev_attr_in1_max.dev_attr.attr,
1757 &sensor_dev_attr_in2_max.dev_attr.attr,
1758 &sensor_dev_attr_in3_max.dev_attr.attr,
1759 &sensor_dev_attr_in4_max.dev_attr.attr,
1760 &sensor_dev_attr_in5_max.dev_attr.attr,
1761 &sensor_dev_attr_in6_max.dev_attr.attr,
1762 &sensor_dev_attr_in7_max.dev_attr.attr,
1763 &sensor_dev_attr_in8_max.dev_attr.attr,
1764 &sensor_dev_attr_in9_max.dev_attr.attr,
1765 &sensor_dev_attr_in10_max.dev_attr.attr,
1766 &sensor_dev_attr_in11_max.dev_attr.attr,
1767 &sensor_dev_attr_in12_max.dev_attr.attr,
1768 &sensor_dev_attr_in13_max.dev_attr.attr,
1769
1770 &sensor_dev_attr_in1_min.dev_attr.attr,
1771 &sensor_dev_attr_in2_min.dev_attr.attr,
1772 &sensor_dev_attr_in3_min.dev_attr.attr,
1773 &sensor_dev_attr_in4_min.dev_attr.attr,
1774 &sensor_dev_attr_in5_min.dev_attr.attr,
1775 &sensor_dev_attr_in6_min.dev_attr.attr,
1776 &sensor_dev_attr_in7_min.dev_attr.attr,
1777 &sensor_dev_attr_in8_min.dev_attr.attr,
1778 &sensor_dev_attr_in9_min.dev_attr.attr,
1779 &sensor_dev_attr_in10_min.dev_attr.attr,
1780 &sensor_dev_attr_in11_min.dev_attr.attr,
1781 &sensor_dev_attr_in12_min.dev_attr.attr,
1782 &sensor_dev_attr_in13_min.dev_attr.attr,
1783
1784 &sensor_dev_attr_in1_input.dev_attr.attr,
1785 &sensor_dev_attr_in2_input.dev_attr.attr,
1786 &sensor_dev_attr_in3_input.dev_attr.attr,
1787 &sensor_dev_attr_in4_input.dev_attr.attr,
1788 &sensor_dev_attr_in5_input.dev_attr.attr,
1789 &sensor_dev_attr_in6_input.dev_attr.attr,
1790 &sensor_dev_attr_in7_input.dev_attr.attr,
1791 &sensor_dev_attr_in8_input.dev_attr.attr,
1792 &sensor_dev_attr_in9_input.dev_attr.attr,
1793 &sensor_dev_attr_in10_input.dev_attr.attr,
1794 &sensor_dev_attr_in11_input.dev_attr.attr,
1795 &sensor_dev_attr_in12_input.dev_attr.attr,
1796 &sensor_dev_attr_in13_input.dev_attr.attr,
1797
1798 &sensor_dev_attr_in1_label.dev_attr.attr,
1799 &sensor_dev_attr_in2_label.dev_attr.attr,
1800 &sensor_dev_attr_in3_label.dev_attr.attr,
1801 &sensor_dev_attr_in4_label.dev_attr.attr,
1802 &sensor_dev_attr_in5_label.dev_attr.attr,
1803 &sensor_dev_attr_in6_label.dev_attr.attr,
1804 &sensor_dev_attr_in7_label.dev_attr.attr,
1805 &sensor_dev_attr_in8_label.dev_attr.attr,
1806 &sensor_dev_attr_in9_label.dev_attr.attr,
1807 &sensor_dev_attr_in10_label.dev_attr.attr,
1808 &sensor_dev_attr_in11_label.dev_attr.attr,
1809 &sensor_dev_attr_in12_label.dev_attr.attr,
1810 &sensor_dev_attr_in13_label.dev_attr.attr,
1811
1812 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1813 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1814 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1815 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1816 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1817 &sensor_dev_attr_in6_alarm.dev_attr.attr,
1818 &sensor_dev_attr_in7_alarm.dev_attr.attr,
1819 &sensor_dev_attr_in8_alarm.dev_attr.attr,
1820 &sensor_dev_attr_in9_alarm.dev_attr.attr,
1821 &sensor_dev_attr_in10_alarm.dev_attr.attr,
1822 &sensor_dev_attr_in11_alarm.dev_attr.attr,
1823 &sensor_dev_attr_in12_alarm.dev_attr.attr,
1824 &sensor_dev_attr_in13_alarm.dev_attr.attr,
1825
1826 &sensor_dev_attr_fan1_min.dev_attr.attr,
1827 &sensor_dev_attr_fan2_min.dev_attr.attr,
1828 &sensor_dev_attr_fan3_min.dev_attr.attr,
1829 &sensor_dev_attr_fan4_min.dev_attr.attr,
1830 &sensor_dev_attr_fan5_min.dev_attr.attr,
1831 &sensor_dev_attr_fan6_min.dev_attr.attr,
1832 &sensor_dev_attr_fan7_min.dev_attr.attr,
1833 &sensor_dev_attr_fan8_min.dev_attr.attr,
1834
1835 &sensor_dev_attr_fan1_input.dev_attr.attr,
1836 &sensor_dev_attr_fan2_input.dev_attr.attr,
1837 &sensor_dev_attr_fan3_input.dev_attr.attr,
1838 &sensor_dev_attr_fan4_input.dev_attr.attr,
1839 &sensor_dev_attr_fan5_input.dev_attr.attr,
1840 &sensor_dev_attr_fan6_input.dev_attr.attr,
1841 &sensor_dev_attr_fan7_input.dev_attr.attr,
1842 &sensor_dev_attr_fan8_input.dev_attr.attr,
1843
1844 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1845 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1846 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1847 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1848 &sensor_dev_attr_fan5_alarm.dev_attr.attr,
1849 &sensor_dev_attr_fan6_alarm.dev_attr.attr,
1850 &sensor_dev_attr_fan7_alarm.dev_attr.attr,
1851 &sensor_dev_attr_fan8_alarm.dev_attr.attr,
1852
1853 &sensor_dev_attr_force_pwm_max.dev_attr.attr,
1854 &sensor_dev_attr_pwm1.dev_attr.attr,
1855 &sensor_dev_attr_pwm2.dev_attr.attr,
1856 &sensor_dev_attr_pwm3.dev_attr.attr,
1857 &sensor_dev_attr_pwm4.dev_attr.attr,
1858
1859 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1860 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1861 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1862 &sensor_dev_attr_pwm4_auto_point1_pwm.dev_attr.attr,
1863
1864 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1865 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1866 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1867 &sensor_dev_attr_pwm4_auto_point2_pwm.dev_attr.attr,
1868
1869 &sensor_dev_attr_temp1_auto_point1_hyst.dev_attr.attr,
1870 &sensor_dev_attr_temp2_auto_point1_hyst.dev_attr.attr,
1871 &sensor_dev_attr_temp3_auto_point1_hyst.dev_attr.attr,
1872 &sensor_dev_attr_temp4_auto_point1_hyst.dev_attr.attr,
1873
1874 &sensor_dev_attr_temp1_auto_point2_hyst.dev_attr.attr,
1875 &sensor_dev_attr_temp2_auto_point2_hyst.dev_attr.attr,
1876 &sensor_dev_attr_temp3_auto_point2_hyst.dev_attr.attr,
1877 &sensor_dev_attr_temp4_auto_point2_hyst.dev_attr.attr,
1878
1879 &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr,
1880 &sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr,
1881 &sensor_dev_attr_temp3_auto_point1_temp.dev_attr.attr,
1882 &sensor_dev_attr_temp4_auto_point1_temp.dev_attr.attr,
1883
1884 &sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr,
1885 &sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr,
1886 &sensor_dev_attr_temp3_auto_point2_temp.dev_attr.attr,
1887 &sensor_dev_attr_temp4_auto_point2_temp.dev_attr.attr,
1888
1889 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1890 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1891 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1892 &sensor_dev_attr_pwm4_enable.dev_attr.attr,
1893
1894 &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
1895 &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
1896 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
1897 &sensor_dev_attr_pwm4_auto_channels_temp.dev_attr.attr,
1898 NULL
1899 };
1900
1901 /* Return 0 if detection is successful, -ENODEV otherwise */
adt7462_detect(struct i2c_client * client,struct i2c_board_info * info)1902 static int adt7462_detect(struct i2c_client *client,
1903 struct i2c_board_info *info)
1904 {
1905 struct i2c_adapter *adapter = client->adapter;
1906 int vendor, device, revision;
1907
1908 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1909 return -ENODEV;
1910
1911 vendor = i2c_smbus_read_byte_data(client, ADT7462_REG_VENDOR);
1912 if (vendor != ADT7462_VENDOR)
1913 return -ENODEV;
1914
1915 device = i2c_smbus_read_byte_data(client, ADT7462_REG_DEVICE);
1916 if (device != ADT7462_DEVICE)
1917 return -ENODEV;
1918
1919 revision = i2c_smbus_read_byte_data(client, ADT7462_REG_REVISION);
1920 if (revision != ADT7462_REVISION)
1921 return -ENODEV;
1922
1923 strlcpy(info->type, "adt7462", I2C_NAME_SIZE);
1924
1925 return 0;
1926 }
1927
adt7462_probe(struct i2c_client * client,const struct i2c_device_id * id)1928 static int adt7462_probe(struct i2c_client *client,
1929 const struct i2c_device_id *id)
1930 {
1931 struct adt7462_data *data;
1932 int err;
1933
1934 data = kzalloc(sizeof(struct adt7462_data), GFP_KERNEL);
1935 if (!data) {
1936 err = -ENOMEM;
1937 goto exit;
1938 }
1939
1940 i2c_set_clientdata(client, data);
1941 mutex_init(&data->lock);
1942
1943 dev_info(&client->dev, "%s chip found\n", client->name);
1944
1945 /* Register sysfs hooks */
1946 data->attrs.attrs = adt7462_attr;
1947 err = sysfs_create_group(&client->dev.kobj, &data->attrs);
1948 if (err)
1949 goto exit_free;
1950
1951 data->hwmon_dev = hwmon_device_register(&client->dev);
1952 if (IS_ERR(data->hwmon_dev)) {
1953 err = PTR_ERR(data->hwmon_dev);
1954 goto exit_remove;
1955 }
1956
1957 return 0;
1958
1959 exit_remove:
1960 sysfs_remove_group(&client->dev.kobj, &data->attrs);
1961 exit_free:
1962 kfree(data);
1963 exit:
1964 return err;
1965 }
1966
adt7462_remove(struct i2c_client * client)1967 static int adt7462_remove(struct i2c_client *client)
1968 {
1969 struct adt7462_data *data = i2c_get_clientdata(client);
1970
1971 hwmon_device_unregister(data->hwmon_dev);
1972 sysfs_remove_group(&client->dev.kobj, &data->attrs);
1973 kfree(data);
1974 return 0;
1975 }
1976
1977 module_i2c_driver(adt7462_driver);
1978
1979 MODULE_AUTHOR("Darrick J. Wong <djwong@us.ibm.com>");
1980 MODULE_DESCRIPTION("ADT7462 driver");
1981 MODULE_LICENSE("GPL");
1982