?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
RT-AC66 3.0.0.4.374.130 core
[tomato.git] / release / src-rt-6.x / linux / linux-2.6 / drivers / hwmon / lm85.c
blob20a8c648280d5c64cfe94da9f4de860053ff183d
1 /*
2 lm85.c - Part of lm_sensors, Linux kernel modules for hardware
3 monitoring
4 Copyright (c) 1998, 1999 Frodo Looijaard <frodol@dds.nl>
5 Copyright (c) 2002, 2003 Philip Pokorny <ppokorny@penguincomputing.com>
6 Copyright (c) 2003 Margit Schubert-While <margitsw@t-online.de>
7 Copyright (c) 2004 Justin Thiessen <jthiessen@penguincomputing.com>
8
9 Chip details at <http://www.national.com/ds/LM/LM85.pdf>
10
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 2 of the License, or
14 (at your option) any later version.
15
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
20
21 You should have received a copy of the GNU General Public License
22 along with this program; if not, write to the Free Software
23 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 */
25
26 #include <linux/module.h>
27 #include <linux/init.h>
28 #include <linux/slab.h>
29 #include <linux/jiffies.h>
30 #include <linux/i2c.h>
31 #include <linux/hwmon.h>
32 #include <linux/hwmon-vid.h>
33 #include <linux/err.h>
34 #include <linux/mutex.h>
35
36 /* Addresses to scan */
37 static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
38
39 /* Insmod parameters */
40 I2C_CLIENT_INSMOD_6(lm85b, lm85c, adm1027, adt7463, emc6d100, emc6d102);
41
42 /* The LM85 registers */
43
44 #define LM85_REG_IN(nr) (0x20 + (nr))
45 #define LM85_REG_IN_MIN(nr) (0x44 + (nr) * 2)
46 #define LM85_REG_IN_MAX(nr) (0x45 + (nr) * 2)
47
48 #define LM85_REG_TEMP(nr) (0x25 + (nr))
49 #define LM85_REG_TEMP_MIN(nr) (0x4e + (nr) * 2)
50 #define LM85_REG_TEMP_MAX(nr) (0x4f + (nr) * 2)
51
52 /* Fan speeds are LSB, MSB (2 bytes) */
53 #define LM85_REG_FAN(nr) (0x28 + (nr) *2)
54 #define LM85_REG_FAN_MIN(nr) (0x54 + (nr) *2)
55
56 #define LM85_REG_PWM(nr) (0x30 + (nr))
57
58 #define ADT7463_REG_OPPOINT(nr) (0x33 + (nr))
59
60 #define ADT7463_REG_TMIN_CTL1 0x36
61 #define ADT7463_REG_TMIN_CTL2 0x37
62
63 #define LM85_REG_DEVICE 0x3d
64 #define LM85_REG_COMPANY 0x3e
65 #define LM85_REG_VERSTEP 0x3f
66 /* These are the recognized values for the above regs */
67 #define LM85_DEVICE_ADX 0x27
68 #define LM85_COMPANY_NATIONAL 0x01
69 #define LM85_COMPANY_ANALOG_DEV 0x41
70 #define LM85_COMPANY_SMSC 0x5c
71 #define LM85_VERSTEP_VMASK 0xf0
72 #define LM85_VERSTEP_GENERIC 0x60
73 #define LM85_VERSTEP_LM85C 0x60
74 #define LM85_VERSTEP_LM85B 0x62
75 #define LM85_VERSTEP_ADM1027 0x60
76 #define LM85_VERSTEP_ADT7463 0x62
77 #define LM85_VERSTEP_ADT7463C 0x6A
78 #define LM85_VERSTEP_EMC6D100_A0 0x60
79 #define LM85_VERSTEP_EMC6D100_A1 0x61
80 #define LM85_VERSTEP_EMC6D102 0x65
81
82 #define LM85_REG_CONFIG 0x40
83
84 #define LM85_REG_ALARM1 0x41
85 #define LM85_REG_ALARM2 0x42
86
87 #define LM85_REG_VID 0x43
88
89 /* Automated FAN control */
90 #define LM85_REG_AFAN_CONFIG(nr) (0x5c + (nr))
91 #define LM85_REG_AFAN_RANGE(nr) (0x5f + (nr))
92 #define LM85_REG_AFAN_SPIKE1 0x62
93 #define LM85_REG_AFAN_SPIKE2 0x63
94 #define LM85_REG_AFAN_MINPWM(nr) (0x64 + (nr))
95 #define LM85_REG_AFAN_LIMIT(nr) (0x67 + (nr))
96 #define LM85_REG_AFAN_CRITICAL(nr) (0x6a + (nr))
97 #define LM85_REG_AFAN_HYST1 0x6d
98 #define LM85_REG_AFAN_HYST2 0x6e
99
100 #define LM85_REG_TACH_MODE 0x74
101 #define LM85_REG_SPINUP_CTL 0x75
102
103 #define ADM1027_REG_TEMP_OFFSET(nr) (0x70 + (nr))
104 #define ADM1027_REG_CONFIG2 0x73
105 #define ADM1027_REG_INTMASK1 0x74
106 #define ADM1027_REG_INTMASK2 0x75
107 #define ADM1027_REG_EXTEND_ADC1 0x76
108 #define ADM1027_REG_EXTEND_ADC2 0x77
109 #define ADM1027_REG_CONFIG3 0x78
110 #define ADM1027_REG_FAN_PPR 0x7b
111
112 #define ADT7463_REG_THERM 0x79
113 #define ADT7463_REG_THERM_LIMIT 0x7A
114
115 #define EMC6D100_REG_ALARM3 0x7d
116 /* IN5, IN6 and IN7 */
117 #define EMC6D100_REG_IN(nr) (0x70 + ((nr)-5))
118 #define EMC6D100_REG_IN_MIN(nr) (0x73 + ((nr)-5) * 2)
119 #define EMC6D100_REG_IN_MAX(nr) (0x74 + ((nr)-5) * 2)
120 #define EMC6D102_REG_EXTEND_ADC1 0x85
121 #define EMC6D102_REG_EXTEND_ADC2 0x86
122 #define EMC6D102_REG_EXTEND_ADC3 0x87
123 #define EMC6D102_REG_EXTEND_ADC4 0x88
124
125 #define LM85_ALARM_IN0 0x0001
126 #define LM85_ALARM_IN1 0x0002
127 #define LM85_ALARM_IN2 0x0004
128 #define LM85_ALARM_IN3 0x0008
129 #define LM85_ALARM_TEMP1 0x0010
130 #define LM85_ALARM_TEMP2 0x0020
131 #define LM85_ALARM_TEMP3 0x0040
132 #define LM85_ALARM_ALARM2 0x0080
133 #define LM85_ALARM_IN4 0x0100
134 #define LM85_ALARM_RESERVED 0x0200
135 #define LM85_ALARM_FAN1 0x0400
136 #define LM85_ALARM_FAN2 0x0800
137 #define LM85_ALARM_FAN3 0x1000
138 #define LM85_ALARM_FAN4 0x2000
139 #define LM85_ALARM_TEMP1_FAULT 0x4000
140 #define LM85_ALARM_TEMP3_FAULT 0x8000
141
142
143 /* Conversions. Rounding and limit checking is only done on the TO_REG
144 variants. Note that you should be a bit careful with which arguments
145 these macros are called: arguments may be evaluated more than once.
146 */
147
148 /* IN are scaled acording to built-in resistors */
149 static int lm85_scaling[] = { /* .001 Volts */
150 2500, 2250, 3300, 5000, 12000,
151 3300, 1500, 1800 /*EMC6D100*/
152 };
153 #define SCALE(val,from,to) (((val)*(to) + ((from)/2))/(from))
154
155 #define INS_TO_REG(n,val) \
156 SENSORS_LIMIT(SCALE(val,lm85_scaling[n],192),0,255)
157
158 #define INSEXT_FROM_REG(n,val,ext,scale) \
159 SCALE((val)*(scale) + (ext),192*(scale),lm85_scaling[n])
160
161 #define INS_FROM_REG(n,val) INSEXT_FROM_REG(n,val,0,1)
162
163 /* FAN speed is measured using 90kHz clock */
164 #define FAN_TO_REG(val) (SENSORS_LIMIT( (val)<=0?0: 5400000/(val),0,65534))
165 #define FAN_FROM_REG(val) ((val)==0?-1:(val)==0xffff?0:5400000/(val))
166
167 /* Temperature is reported in .001 degC increments */
168 #define TEMP_TO_REG(val) \
169 SENSORS_LIMIT(SCALE(val,1000,1),-127,127)
170 #define TEMPEXT_FROM_REG(val,ext,scale) \
171 SCALE((val)*scale + (ext),scale,1000)
172 #define TEMP_FROM_REG(val) \
173 TEMPEXT_FROM_REG(val,0,1)
174
175 #define PWM_TO_REG(val) (SENSORS_LIMIT(val,0,255))
176 #define PWM_FROM_REG(val) (val)
177
178
179 /* ZONEs have the following parameters:
180 * Limit (low) temp, 1. degC
181 * Hysteresis (below limit), 1. degC (0-15)
182 * Range of speed control, .1 degC (2-80)
183 * Critical (high) temp, 1. degC
184 *
185 * FAN PWMs have the following parameters:
186 * Reference Zone, 1, 2, 3, etc.
187 * Spinup time, .05 sec
188 * PWM value at limit/low temp, 1 count
189 * PWM Frequency, 1. Hz
190 * PWM is Min or OFF below limit, flag
191 * Invert PWM output, flag
192 *
193 * Some chips filter the temp, others the fan.
194 * Filter constant (or disabled) .1 seconds
195 */
196
197 /* These are the zone temperature range encodings in .001 degree C */
198 static int lm85_range_map[] = {
199 2000, 2500, 3300, 4000, 5000, 6600,
200 8000, 10000, 13300, 16000, 20000, 26600,
201 32000, 40000, 53300, 80000
202 };
203 static int RANGE_TO_REG( int range )
204 {
205 int i;
206
207 if ( range < lm85_range_map[0] ) {
208 return 0 ;
209 } else if ( range > lm85_range_map[15] ) {
210 return 15 ;
211 } else { /* find closest match */
212 for ( i = 14 ; i >= 0 ; --i ) {
213 if ( range > lm85_range_map[i] ) { /* range bracketed */
214 if ((lm85_range_map[i+1] - range) <
215 (range - lm85_range_map[i])) {
216 i++;
217 break;
218 }
219 break;
220 }
221 }
222 }
223 return( i & 0x0f );
224 }
225 #define RANGE_FROM_REG(val) (lm85_range_map[(val)&0x0f])
226
227 /* These are the Acoustic Enhancement, or Temperature smoothing encodings
228 * NOTE: The enable/disable bit is INCLUDED in these encodings as the
229 * MSB (bit 3, value 8). If the enable bit is 0, the encoded value
230 * is ignored, or set to 0.
231 */
232 /* These are the PWM frequency encodings */
233 static int lm85_freq_map[] = { /* .1 Hz */
234 100, 150, 230, 300, 380, 470, 620, 940
235 };
236 static int FREQ_TO_REG( int freq )
237 {
238 int i;
239
240 if( freq >= lm85_freq_map[7] ) { return 7 ; }
241 for( i = 0 ; i < 7 ; ++i )
242 if( freq <= lm85_freq_map[i] )
243 break ;
244 return( i & 0x07 );
245 }
246 #define FREQ_FROM_REG(val) (lm85_freq_map[(val)&0x07])
247
248 /* Since we can't use strings, I'm abusing these numbers
249 * to stand in for the following meanings:
250 * 1 -- PWM responds to Zone 1
251 * 2 -- PWM responds to Zone 2
252 * 3 -- PWM responds to Zone 3
253 * 23 -- PWM responds to the higher temp of Zone 2 or 3
254 * 123 -- PWM responds to highest of Zone 1, 2, or 3
255 * 0 -- PWM is always at 0% (ie, off)
256 * -1 -- PWM is always at 100%
257 * -2 -- PWM responds to manual control
258 */
259
260 static int lm85_zone_map[] = { 1, 2, 3, -1, 0, 23, 123, -2 };
261 #define ZONE_FROM_REG(val) (lm85_zone_map[((val)>>5)&0x07])
262
263 static int ZONE_TO_REG( int zone )
264 {
265 int i;
266
267 for( i = 0 ; i <= 7 ; ++i )
268 if( zone == lm85_zone_map[i] )
269 break ;
270 if( i > 7 ) /* Not found. */
271 i = 3; /* Always 100% */
272 return( (i & 0x07)<<5 );
273 }
274
275 #define HYST_TO_REG(val) (SENSORS_LIMIT(((val)+500)/1000,0,15))
276 #define HYST_FROM_REG(val) ((val)*1000)
277
278 #define OFFSET_TO_REG(val) (SENSORS_LIMIT((val)/25,-127,127))
279 #define OFFSET_FROM_REG(val) ((val)*25)
280
281 #define PPR_MASK(fan) (0x03<<(fan *2))
282 #define PPR_TO_REG(val,fan) (SENSORS_LIMIT((val)-1,0,3)<<(fan *2))
283 #define PPR_FROM_REG(val,fan) ((((val)>>(fan * 2))&0x03)+1)
284
285 /* Chip sampling rates
286 *
287 * Some sensors are not updated more frequently than once per second
288 * so it doesn't make sense to read them more often than that.
289 * We cache the results and return the saved data if the driver
290 * is called again before a second has elapsed.
291 *
292 * Also, there is significant configuration data for this chip
293 * given the automatic PWM fan control that is possible. There
294 * are about 47 bytes of config data to only 22 bytes of actual
295 * readings. So, we keep the config data up to date in the cache
296 * when it is written and only sample it once every 1 *minute*
297 */
298 #define LM85_DATA_INTERVAL (HZ + HZ / 2)
299 #define LM85_CONFIG_INTERVAL (1 * 60 * HZ)
300
301 /* LM85 can automatically adjust fan speeds based on temperature
302 * This structure encapsulates an entire Zone config. There are
303 * three zones (one for each temperature input) on the lm85
304 */
305 struct lm85_zone {
306 s8 limit; /* Low temp limit */
307 u8 hyst; /* Low limit hysteresis. (0-15) */
308 u8 range; /* Temp range, encoded */
309 s8 critical; /* "All fans ON" temp limit */
310 u8 off_desired; /* Actual "off" temperature specified. Preserved
311 * to prevent "drift" as other autofan control
312 * values change.
313 */
314 u8 max_desired; /* Actual "max" temperature specified. Preserved
315 * to prevent "drift" as other autofan control
316 * values change.
317 */
318 };
319
320 struct lm85_autofan {
321 u8 config; /* Register value */
322 u8 freq; /* PWM frequency, encoded */
323 u8 min_pwm; /* Minimum PWM value, encoded */
324 u8 min_off; /* Min PWM or OFF below "limit", flag */
325 };
326
327 /* For each registered chip, we need to keep some data in memory.
328 The structure is dynamically allocated. */
329 struct lm85_data {
330 struct i2c_client client;
331 struct class_device *class_dev;
332 enum chips type;
333
334 struct mutex update_lock;
335 int valid; /* !=0 if following fields are valid */
336 unsigned long last_reading; /* In jiffies */
337 unsigned long last_config; /* In jiffies */
338
339 u8 in[8]; /* Register value */
340 u8 in_max[8]; /* Register value */
341 u8 in_min[8]; /* Register value */
342 s8 temp[3]; /* Register value */
343 s8 temp_min[3]; /* Register value */
344 s8 temp_max[3]; /* Register value */
345 s8 temp_offset[3]; /* Register value */
346 u16 fan[4]; /* Register value */
347 u16 fan_min[4]; /* Register value */
348 u8 pwm[3]; /* Register value */
349 u8 spinup_ctl; /* Register encoding, combined */
350 u8 tach_mode; /* Register encoding, combined */
351 u8 temp_ext[3]; /* Decoded values */
352 u8 in_ext[8]; /* Decoded values */
353 u8 adc_scale; /* ADC Extended bits scaling factor */
354 u8 fan_ppr; /* Register value */
355 u8 smooth[3]; /* Register encoding */
356 u8 vid; /* Register value */
357 u8 vrm; /* VRM version */
358 u8 syncpwm3; /* Saved PWM3 for TACH 2,3,4 config */
359 u8 oppoint[3]; /* Register value */
360 u16 tmin_ctl; /* Register value */
361 unsigned long therm_total; /* Cummulative therm count */
362 u8 therm_limit; /* Register value */
363 u32 alarms; /* Register encoding, combined */
364 struct lm85_autofan autofan[3];
365 struct lm85_zone zone[3];
366 };
367
368 static int lm85_attach_adapter(struct i2c_adapter *adapter);
369 static int lm85_detect(struct i2c_adapter *adapter, int address,
370 int kind);
371 static int lm85_detach_client(struct i2c_client *client);
372
373 static int lm85_read_value(struct i2c_client *client, u8 reg);
374 static int lm85_write_value(struct i2c_client *client, u8 reg, int value);
375 static struct lm85_data *lm85_update_device(struct device *dev);
376 static void lm85_init_client(struct i2c_client *client);
377
378
379 static struct i2c_driver lm85_driver = {
380 .driver = {
381 .name = "lm85",
382 },
383 .id = I2C_DRIVERID_LM85,
384 .attach_adapter = lm85_attach_adapter,
385 .detach_client = lm85_detach_client,
386 };
387
388
389 /* 4 Fans */
390 static ssize_t show_fan(struct device *dev, char *buf, int nr)
391 {
392 struct lm85_data *data = lm85_update_device(dev);
393 return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan[nr]) );
394 }
395 static ssize_t show_fan_min(struct device *dev, char *buf, int nr)
396 {
397 struct lm85_data *data = lm85_update_device(dev);
398 return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan_min[nr]) );
399 }
400 static ssize_t set_fan_min(struct device *dev, const char *buf,
401 size_t count, int nr)
402 {
403 struct i2c_client *client = to_i2c_client(dev);
404 struct lm85_data *data = i2c_get_clientdata(client);
405 long val = simple_strtol(buf, NULL, 10);
406
407 mutex_lock(&data->update_lock);
408 data->fan_min[nr] = FAN_TO_REG(val);
409 lm85_write_value(client, LM85_REG_FAN_MIN(nr), data->fan_min[nr]);
410 mutex_unlock(&data->update_lock);
411 return count;
412 }
413
414 #define show_fan_offset(offset) \
415 static ssize_t show_fan_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
416 { \
417 return show_fan(dev, buf, offset - 1); \
418 } \
419 static ssize_t show_fan_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \
420 { \
421 return show_fan_min(dev, buf, offset - 1); \
422 } \
423 static ssize_t set_fan_##offset##_min (struct device *dev, struct device_attribute *attr, \
424 const char *buf, size_t count) \
425 { \
426 return set_fan_min(dev, buf, count, offset - 1); \
427 } \
428 static DEVICE_ATTR(fan##offset##_input, S_IRUGO, show_fan_##offset, \
429 NULL); \
430 static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
431 show_fan_##offset##_min, set_fan_##offset##_min);
432
433 show_fan_offset(1);
434 show_fan_offset(2);
435 show_fan_offset(3);
436 show_fan_offset(4);
437
438 /* vid, vrm, alarms */
439
440 static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr, char *buf)
441 {
442 struct lm85_data *data = lm85_update_device(dev);
443 int vid;
444
445 if (data->type == adt7463 && (data->vid & 0x80)) {
446 /* 6-pin VID (VRM 10) */
447 vid = vid_from_reg(data->vid & 0x3f, data->vrm);
448 } else {
449 /* 5-pin VID (VRM 9) */
450 vid = vid_from_reg(data->vid & 0x1f, data->vrm);
451 }
452
453 return sprintf(buf, "%d\n", vid);
454 }
455
456 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
457
458 static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr, char *buf)
459 {
460 struct lm85_data *data = lm85_update_device(dev);
461 return sprintf(buf, "%ld\n", (long) data->vrm);
462 }
463
464 static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
465 {
466 struct i2c_client *client = to_i2c_client(dev);
467 struct lm85_data *data = i2c_get_clientdata(client);
468 u32 val;
469
470 val = simple_strtoul(buf, NULL, 10);
471 data->vrm = val;
472 return count;
473 }
474
475 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
476
477 static ssize_t show_alarms_reg(struct device *dev, struct device_attribute *attr, char *buf)
478 {
479 struct lm85_data *data = lm85_update_device(dev);
480 return sprintf(buf, "%u\n", data->alarms);
481 }
482
483 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
484
485 /* pwm */
486
487 static ssize_t show_pwm(struct device *dev, char *buf, int nr)
488 {
489 struct lm85_data *data = lm85_update_device(dev);
490 return sprintf(buf,"%d\n", PWM_FROM_REG(data->pwm[nr]) );
491 }
492 static ssize_t set_pwm(struct device *dev, const char *buf,
493 size_t count, int nr)
494 {
495 struct i2c_client *client = to_i2c_client(dev);
496 struct lm85_data *data = i2c_get_clientdata(client);
497 long val = simple_strtol(buf, NULL, 10);
498
499 mutex_lock(&data->update_lock);
500 data->pwm[nr] = PWM_TO_REG(val);
501 lm85_write_value(client, LM85_REG_PWM(nr), data->pwm[nr]);
502 mutex_unlock(&data->update_lock);
503 return count;
504 }
505 static ssize_t show_pwm_enable(struct device *dev, char *buf, int nr)
506 {
507 struct lm85_data *data = lm85_update_device(dev);
508 int pwm_zone;
509
510 pwm_zone = ZONE_FROM_REG(data->autofan[nr].config);
511 return sprintf(buf,"%d\n", (pwm_zone != 0 && pwm_zone != -1) );
512 }
513
514 #define show_pwm_reg(offset) \
515 static ssize_t show_pwm_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
516 { \
517 return show_pwm(dev, buf, offset - 1); \
518 } \
519 static ssize_t set_pwm_##offset (struct device *dev, struct device_attribute *attr, \
520 const char *buf, size_t count) \
521 { \
522 return set_pwm(dev, buf, count, offset - 1); \
523 } \
524 static ssize_t show_pwm_enable##offset (struct device *dev, struct device_attribute *attr, char *buf) \
525 { \
526 return show_pwm_enable(dev, buf, offset - 1); \
527 } \
528 static DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \
529 show_pwm_##offset, set_pwm_##offset); \
530 static DEVICE_ATTR(pwm##offset##_enable, S_IRUGO, \
531 show_pwm_enable##offset, NULL);
532
533 show_pwm_reg(1);
534 show_pwm_reg(2);
535 show_pwm_reg(3);
536
537 /* Voltages */
538
539 static ssize_t show_in(struct device *dev, char *buf, int nr)
540 {
541 struct lm85_data *data = lm85_update_device(dev);
542 return sprintf( buf, "%d\n", INSEXT_FROM_REG(nr,
543 data->in[nr],
544 data->in_ext[nr],
545 data->adc_scale) );
546 }
547 static ssize_t show_in_min(struct device *dev, char *buf, int nr)
548 {
549 struct lm85_data *data = lm85_update_device(dev);
550 return sprintf(buf,"%d\n", INS_FROM_REG(nr, data->in_min[nr]) );
551 }
552 static ssize_t set_in_min(struct device *dev, const char *buf,
553 size_t count, int nr)
554 {
555 struct i2c_client *client = to_i2c_client(dev);
556 struct lm85_data *data = i2c_get_clientdata(client);
557 long val = simple_strtol(buf, NULL, 10);
558
559 mutex_lock(&data->update_lock);
560 data->in_min[nr] = INS_TO_REG(nr, val);
561 lm85_write_value(client, LM85_REG_IN_MIN(nr), data->in_min[nr]);
562 mutex_unlock(&data->update_lock);
563 return count;
564 }
565 static ssize_t show_in_max(struct device *dev, char *buf, int nr)
566 {
567 struct lm85_data *data = lm85_update_device(dev);
568 return sprintf(buf,"%d\n", INS_FROM_REG(nr, data->in_max[nr]) );
569 }
570 static ssize_t set_in_max(struct device *dev, const char *buf,
571 size_t count, int nr)
572 {
573 struct i2c_client *client = to_i2c_client(dev);
574 struct lm85_data *data = i2c_get_clientdata(client);
575 long val = simple_strtol(buf, NULL, 10);
576
577 mutex_lock(&data->update_lock);
578 data->in_max[nr] = INS_TO_REG(nr, val);
579 lm85_write_value(client, LM85_REG_IN_MAX(nr), data->in_max[nr]);
580 mutex_unlock(&data->update_lock);
581 return count;
582 }
583 #define show_in_reg(offset) \
584 static ssize_t show_in_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
585 { \
586 return show_in(dev, buf, offset); \
587 } \
588 static ssize_t show_in_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \
589 { \
590 return show_in_min(dev, buf, offset); \
591 } \
592 static ssize_t show_in_##offset##_max (struct device *dev, struct device_attribute *attr, char *buf) \
593 { \
594 return show_in_max(dev, buf, offset); \
595 } \
596 static ssize_t set_in_##offset##_min (struct device *dev, struct device_attribute *attr, \
597 const char *buf, size_t count) \
598 { \
599 return set_in_min(dev, buf, count, offset); \
600 } \
601 static ssize_t set_in_##offset##_max (struct device *dev, struct device_attribute *attr, \
602 const char *buf, size_t count) \
603 { \
604 return set_in_max(dev, buf, count, offset); \
605 } \
606 static DEVICE_ATTR(in##offset##_input, S_IRUGO, show_in_##offset, \
607 NULL); \
608 static DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
609 show_in_##offset##_min, set_in_##offset##_min); \
610 static DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
611 show_in_##offset##_max, set_in_##offset##_max);
612
613 show_in_reg(0);
614 show_in_reg(1);
615 show_in_reg(2);
616 show_in_reg(3);
617 show_in_reg(4);
618
619 /* Temps */
620
621 static ssize_t show_temp(struct device *dev, char *buf, int nr)
622 {
623 struct lm85_data *data = lm85_update_device(dev);
624 return sprintf(buf,"%d\n", TEMPEXT_FROM_REG(data->temp[nr],
625 data->temp_ext[nr],
626 data->adc_scale) );
627 }
628 static ssize_t show_temp_min(struct device *dev, char *buf, int nr)
629 {
630 struct lm85_data *data = lm85_update_device(dev);
631 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->temp_min[nr]) );
632 }
633 static ssize_t set_temp_min(struct device *dev, const char *buf,
634 size_t count, int nr)
635 {
636 struct i2c_client *client = to_i2c_client(dev);
637 struct lm85_data *data = i2c_get_clientdata(client);
638 long val = simple_strtol(buf, NULL, 10);
639
640 mutex_lock(&data->update_lock);
641 data->temp_min[nr] = TEMP_TO_REG(val);
642 lm85_write_value(client, LM85_REG_TEMP_MIN(nr), data->temp_min[nr]);
643 mutex_unlock(&data->update_lock);
644 return count;
645 }
646 static ssize_t show_temp_max(struct device *dev, char *buf, int nr)
647 {
648 struct lm85_data *data = lm85_update_device(dev);
649 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->temp_max[nr]) );
650 }
651 static ssize_t set_temp_max(struct device *dev, const char *buf,
652 size_t count, int nr)
653 {
654 struct i2c_client *client = to_i2c_client(dev);
655 struct lm85_data *data = i2c_get_clientdata(client);
656 long val = simple_strtol(buf, NULL, 10);
657
658 mutex_lock(&data->update_lock);
659 data->temp_max[nr] = TEMP_TO_REG(val);
660 lm85_write_value(client, LM85_REG_TEMP_MAX(nr), data->temp_max[nr]);
661 mutex_unlock(&data->update_lock);
662 return count;
663 }
664 #define show_temp_reg(offset) \
665 static ssize_t show_temp_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
666 { \
667 return show_temp(dev, buf, offset - 1); \
668 } \
669 static ssize_t show_temp_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \
670 { \
671 return show_temp_min(dev, buf, offset - 1); \
672 } \
673 static ssize_t show_temp_##offset##_max (struct device *dev, struct device_attribute *attr, char *buf) \
674 { \
675 return show_temp_max(dev, buf, offset - 1); \
676 } \
677 static ssize_t set_temp_##offset##_min (struct device *dev, struct device_attribute *attr, \
678 const char *buf, size_t count) \
679 { \
680 return set_temp_min(dev, buf, count, offset - 1); \
681 } \
682 static ssize_t set_temp_##offset##_max (struct device *dev, struct device_attribute *attr, \
683 const char *buf, size_t count) \
684 { \
685 return set_temp_max(dev, buf, count, offset - 1); \
686 } \
687 static DEVICE_ATTR(temp##offset##_input, S_IRUGO, show_temp_##offset, \
688 NULL); \
689 static DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \
690 show_temp_##offset##_min, set_temp_##offset##_min); \
691 static DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
692 show_temp_##offset##_max, set_temp_##offset##_max);
693
694 show_temp_reg(1);
695 show_temp_reg(2);
696 show_temp_reg(3);
697
698
699 /* Automatic PWM control */
700
701 static ssize_t show_pwm_auto_channels(struct device *dev, char *buf, int nr)
702 {
703 struct lm85_data *data = lm85_update_device(dev);
704 return sprintf(buf,"%d\n", ZONE_FROM_REG(data->autofan[nr].config));
705 }
706 static ssize_t set_pwm_auto_channels(struct device *dev, const char *buf,
707 size_t count, int nr)
708 {
709 struct i2c_client *client = to_i2c_client(dev);
710 struct lm85_data *data = i2c_get_clientdata(client);
711 long val = simple_strtol(buf, NULL, 10);
712
713 mutex_lock(&data->update_lock);
714 data->autofan[nr].config = (data->autofan[nr].config & (~0xe0))
715 | ZONE_TO_REG(val) ;
716 lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr),
717 data->autofan[nr].config);
718 mutex_unlock(&data->update_lock);
719 return count;
720 }
721 static ssize_t show_pwm_auto_pwm_min(struct device *dev, char *buf, int nr)
722 {
723 struct lm85_data *data = lm85_update_device(dev);
724 return sprintf(buf,"%d\n", PWM_FROM_REG(data->autofan[nr].min_pwm));
725 }
726 static ssize_t set_pwm_auto_pwm_min(struct device *dev, const char *buf,
727 size_t count, int nr)
728 {
729 struct i2c_client *client = to_i2c_client(dev);
730 struct lm85_data *data = i2c_get_clientdata(client);
731 long val = simple_strtol(buf, NULL, 10);
732
733 mutex_lock(&data->update_lock);
734 data->autofan[nr].min_pwm = PWM_TO_REG(val);
735 lm85_write_value(client, LM85_REG_AFAN_MINPWM(nr),
736 data->autofan[nr].min_pwm);
737 mutex_unlock(&data->update_lock);
738 return count;
739 }
740 static ssize_t show_pwm_auto_pwm_minctl(struct device *dev, char *buf, int nr)
741 {
742 struct lm85_data *data = lm85_update_device(dev);
743 return sprintf(buf,"%d\n", data->autofan[nr].min_off);
744 }
745 static ssize_t set_pwm_auto_pwm_minctl(struct device *dev, const char *buf,
746 size_t count, int nr)
747 {
748 struct i2c_client *client = to_i2c_client(dev);
749 struct lm85_data *data = i2c_get_clientdata(client);
750 long val = simple_strtol(buf, NULL, 10);
751
752 mutex_lock(&data->update_lock);
753 data->autofan[nr].min_off = val;
754 lm85_write_value(client, LM85_REG_AFAN_SPIKE1, data->smooth[0]
755 | data->syncpwm3
756 | (data->autofan[0].min_off ? 0x20 : 0)
757 | (data->autofan[1].min_off ? 0x40 : 0)
758 | (data->autofan[2].min_off ? 0x80 : 0)
759 );
760 mutex_unlock(&data->update_lock);
761 return count;
762 }
763 static ssize_t show_pwm_auto_pwm_freq(struct device *dev, char *buf, int nr)
764 {
765 struct lm85_data *data = lm85_update_device(dev);
766 return sprintf(buf,"%d\n", FREQ_FROM_REG(data->autofan[nr].freq));
767 }
768 static ssize_t set_pwm_auto_pwm_freq(struct device *dev, const char *buf,
769 size_t count, int nr)
770 {
771 struct i2c_client *client = to_i2c_client(dev);
772 struct lm85_data *data = i2c_get_clientdata(client);
773 long val = simple_strtol(buf, NULL, 10);
774
775 mutex_lock(&data->update_lock);
776 data->autofan[nr].freq = FREQ_TO_REG(val);
777 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
778 (data->zone[nr].range << 4)
779 | data->autofan[nr].freq
780 );
781 mutex_unlock(&data->update_lock);
782 return count;
783 }
784 #define pwm_auto(offset) \
785 static ssize_t show_pwm##offset##_auto_channels (struct device *dev, struct device_attribute *attr, \
786 char *buf) \
787 { \
788 return show_pwm_auto_channels(dev, buf, offset - 1); \
789 } \
790 static ssize_t set_pwm##offset##_auto_channels (struct device *dev, struct device_attribute *attr, \
791 const char *buf, size_t count) \
792 { \
793 return set_pwm_auto_channels(dev, buf, count, offset - 1); \
794 } \
795 static ssize_t show_pwm##offset##_auto_pwm_min (struct device *dev, struct device_attribute *attr, \
796 char *buf) \
797 { \
798 return show_pwm_auto_pwm_min(dev, buf, offset - 1); \
799 } \
800 static ssize_t set_pwm##offset##_auto_pwm_min (struct device *dev, struct device_attribute *attr, \
801 const char *buf, size_t count) \
802 { \
803 return set_pwm_auto_pwm_min(dev, buf, count, offset - 1); \
804 } \
805 static ssize_t show_pwm##offset##_auto_pwm_minctl (struct device *dev, struct device_attribute *attr, \
806 char *buf) \
807 { \
808 return show_pwm_auto_pwm_minctl(dev, buf, offset - 1); \
809 } \
810 static ssize_t set_pwm##offset##_auto_pwm_minctl (struct device *dev, struct device_attribute *attr, \
811 const char *buf, size_t count) \
812 { \
813 return set_pwm_auto_pwm_minctl(dev, buf, count, offset - 1); \
814 } \
815 static ssize_t show_pwm##offset##_auto_pwm_freq (struct device *dev, struct device_attribute *attr, \
816 char *buf) \
817 { \
818 return show_pwm_auto_pwm_freq(dev, buf, offset - 1); \
819 } \
820 static ssize_t set_pwm##offset##_auto_pwm_freq(struct device *dev, struct device_attribute *attr, \
821 const char *buf, size_t count) \
822 { \
823 return set_pwm_auto_pwm_freq(dev, buf, count, offset - 1); \
824 } \
825 static DEVICE_ATTR(pwm##offset##_auto_channels, S_IRUGO | S_IWUSR, \
826 show_pwm##offset##_auto_channels, \
827 set_pwm##offset##_auto_channels); \
828 static DEVICE_ATTR(pwm##offset##_auto_pwm_min, S_IRUGO | S_IWUSR, \
829 show_pwm##offset##_auto_pwm_min, \
830 set_pwm##offset##_auto_pwm_min); \
831 static DEVICE_ATTR(pwm##offset##_auto_pwm_minctl, S_IRUGO | S_IWUSR, \
832 show_pwm##offset##_auto_pwm_minctl, \
833 set_pwm##offset##_auto_pwm_minctl); \
834 static DEVICE_ATTR(pwm##offset##_auto_pwm_freq, S_IRUGO | S_IWUSR, \
835 show_pwm##offset##_auto_pwm_freq, \
836 set_pwm##offset##_auto_pwm_freq);
837 pwm_auto(1);
838 pwm_auto(2);
839 pwm_auto(3);
840
841 /* Temperature settings for automatic PWM control */
842
843 static ssize_t show_temp_auto_temp_off(struct device *dev, char *buf, int nr)
844 {
845 struct lm85_data *data = lm85_update_device(dev);
846 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) -
847 HYST_FROM_REG(data->zone[nr].hyst));
848 }
849 static ssize_t set_temp_auto_temp_off(struct device *dev, const char *buf,
850 size_t count, int nr)
851 {
852 struct i2c_client *client = to_i2c_client(dev);
853 struct lm85_data *data = i2c_get_clientdata(client);
854 int min;
855 long val = simple_strtol(buf, NULL, 10);
856
857 mutex_lock(&data->update_lock);
858 min = TEMP_FROM_REG(data->zone[nr].limit);
859 data->zone[nr].off_desired = TEMP_TO_REG(val);
860 data->zone[nr].hyst = HYST_TO_REG(min - val);
861 if ( nr == 0 || nr == 1 ) {
862 lm85_write_value(client, LM85_REG_AFAN_HYST1,
863 (data->zone[0].hyst << 4)
864 | data->zone[1].hyst
865 );
866 } else {
867 lm85_write_value(client, LM85_REG_AFAN_HYST2,
868 (data->zone[2].hyst << 4)
869 );
870 }
871 mutex_unlock(&data->update_lock);
872 return count;
873 }
874 static ssize_t show_temp_auto_temp_min(struct device *dev, char *buf, int nr)
875 {
876 struct lm85_data *data = lm85_update_device(dev);
877 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) );
878 }
879 static ssize_t set_temp_auto_temp_min(struct device *dev, const char *buf,
880 size_t count, int nr)
881 {
882 struct i2c_client *client = to_i2c_client(dev);
883 struct lm85_data *data = i2c_get_clientdata(client);
884 long val = simple_strtol(buf, NULL, 10);
885
886 mutex_lock(&data->update_lock);
887 data->zone[nr].limit = TEMP_TO_REG(val);
888 lm85_write_value(client, LM85_REG_AFAN_LIMIT(nr),
889 data->zone[nr].limit);
890
891 /* Update temp_auto_max and temp_auto_range */
892 data->zone[nr].range = RANGE_TO_REG(
893 TEMP_FROM_REG(data->zone[nr].max_desired) -
894 TEMP_FROM_REG(data->zone[nr].limit));
895 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
896 ((data->zone[nr].range & 0x0f) << 4)
897 | (data->autofan[nr].freq & 0x07));
898
899 /* Update temp_auto_hyst and temp_auto_off */
900 data->zone[nr].hyst = HYST_TO_REG(TEMP_FROM_REG(
901 data->zone[nr].limit) - TEMP_FROM_REG(
902 data->zone[nr].off_desired));
903 if ( nr == 0 || nr == 1 ) {
904 lm85_write_value(client, LM85_REG_AFAN_HYST1,
905 (data->zone[0].hyst << 4)
906 | data->zone[1].hyst
907 );
908 } else {
909 lm85_write_value(client, LM85_REG_AFAN_HYST2,
910 (data->zone[2].hyst << 4)
911 );
912 }
913 mutex_unlock(&data->update_lock);
914 return count;
915 }
916 static ssize_t show_temp_auto_temp_max(struct device *dev, char *buf, int nr)
917 {
918 struct lm85_data *data = lm85_update_device(dev);
919 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) +
920 RANGE_FROM_REG(data->zone[nr].range));
921 }
922 static ssize_t set_temp_auto_temp_max(struct device *dev, const char *buf,
923 size_t count, int nr)
924 {
925 struct i2c_client *client = to_i2c_client(dev);
926 struct lm85_data *data = i2c_get_clientdata(client);
927 int min;
928 long val = simple_strtol(buf, NULL, 10);
929
930 mutex_lock(&data->update_lock);
931 min = TEMP_FROM_REG(data->zone[nr].limit);
932 data->zone[nr].max_desired = TEMP_TO_REG(val);
933 data->zone[nr].range = RANGE_TO_REG(
934 val - min);
935 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
936 ((data->zone[nr].range & 0x0f) << 4)
937 | (data->autofan[nr].freq & 0x07));
938 mutex_unlock(&data->update_lock);
939 return count;
940 }
941 static ssize_t show_temp_auto_temp_crit(struct device *dev, char *buf, int nr)
942 {
943 struct lm85_data *data = lm85_update_device(dev);
944 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].critical));
945 }
946 static ssize_t set_temp_auto_temp_crit(struct device *dev, const char *buf,
947 size_t count, int nr)
948 {
949 struct i2c_client *client = to_i2c_client(dev);
950 struct lm85_data *data = i2c_get_clientdata(client);
951 long val = simple_strtol(buf, NULL, 10);
952
953 mutex_lock(&data->update_lock);
954 data->zone[nr].critical = TEMP_TO_REG(val);
955 lm85_write_value(client, LM85_REG_AFAN_CRITICAL(nr),
956 data->zone[nr].critical);
957 mutex_unlock(&data->update_lock);
958 return count;
959 }
960 #define temp_auto(offset) \
961 static ssize_t show_temp##offset##_auto_temp_off (struct device *dev, struct device_attribute *attr, \
962 char *buf) \
963 { \
964 return show_temp_auto_temp_off(dev, buf, offset - 1); \
965 } \
966 static ssize_t set_temp##offset##_auto_temp_off (struct device *dev, struct device_attribute *attr, \
967 const char *buf, size_t count) \
968 { \
969 return set_temp_auto_temp_off(dev, buf, count, offset - 1); \
970 } \
971 static ssize_t show_temp##offset##_auto_temp_min (struct device *dev, struct device_attribute *attr, \
972 char *buf) \
973 { \
974 return show_temp_auto_temp_min(dev, buf, offset - 1); \
975 } \
976 static ssize_t set_temp##offset##_auto_temp_min (struct device *dev, struct device_attribute *attr, \
977 const char *buf, size_t count) \
978 { \
979 return set_temp_auto_temp_min(dev, buf, count, offset - 1); \
980 } \
981 static ssize_t show_temp##offset##_auto_temp_max (struct device *dev, struct device_attribute *attr, \
982 char *buf) \
983 { \
984 return show_temp_auto_temp_max(dev, buf, offset - 1); \
985 } \
986 static ssize_t set_temp##offset##_auto_temp_max (struct device *dev, struct device_attribute *attr, \
987 const char *buf, size_t count) \
988 { \
989 return set_temp_auto_temp_max(dev, buf, count, offset - 1); \
990 } \
991 static ssize_t show_temp##offset##_auto_temp_crit (struct device *dev, struct device_attribute *attr, \
992 char *buf) \
993 { \
994 return show_temp_auto_temp_crit(dev, buf, offset - 1); \
995 } \
996 static ssize_t set_temp##offset##_auto_temp_crit (struct device *dev, struct device_attribute *attr, \
997 const char *buf, size_t count) \
998 { \
999 return set_temp_auto_temp_crit(dev, buf, count, offset - 1); \
1000 } \
1001 static DEVICE_ATTR(temp##offset##_auto_temp_off, S_IRUGO | S_IWUSR, \
1002 show_temp##offset##_auto_temp_off, \
1003 set_temp##offset##_auto_temp_off); \
1004 static DEVICE_ATTR(temp##offset##_auto_temp_min, S_IRUGO | S_IWUSR, \
1005 show_temp##offset##_auto_temp_min, \
1006 set_temp##offset##_auto_temp_min); \
1007 static DEVICE_ATTR(temp##offset##_auto_temp_max, S_IRUGO | S_IWUSR, \
1008 show_temp##offset##_auto_temp_max, \
1009 set_temp##offset##_auto_temp_max); \
1010 static DEVICE_ATTR(temp##offset##_auto_temp_crit, S_IRUGO | S_IWUSR, \
1011 show_temp##offset##_auto_temp_crit, \
1012 set_temp##offset##_auto_temp_crit);
1013 temp_auto(1);
1014 temp_auto(2);
1015 temp_auto(3);
1016
1017 static int lm85_attach_adapter(struct i2c_adapter *adapter)
1018 {
1019 if (!(adapter->class & I2C_CLASS_HWMON))
1020 return 0;
1021 return i2c_probe(adapter, &addr_data, lm85_detect);
1022 }
1023
1024 static struct attribute *lm85_attributes[] = {
1025 &dev_attr_fan1_input.attr,
1026 &dev_attr_fan2_input.attr,
1027 &dev_attr_fan3_input.attr,
1028 &dev_attr_fan4_input.attr,
1029 &dev_attr_fan1_min.attr,
1030 &dev_attr_fan2_min.attr,
1031 &dev_attr_fan3_min.attr,
1032 &dev_attr_fan4_min.attr,
1033 &dev_attr_pwm1.attr,
1034 &dev_attr_pwm2.attr,
1035 &dev_attr_pwm3.attr,
1036 &dev_attr_pwm1_enable.attr,
1037 &dev_attr_pwm2_enable.attr,
1038 &dev_attr_pwm3_enable.attr,
1039 &dev_attr_in0_input.attr,
1040 &dev_attr_in1_input.attr,
1041 &dev_attr_in2_input.attr,
1042 &dev_attr_in3_input.attr,
1043 &dev_attr_in0_min.attr,
1044 &dev_attr_in1_min.attr,
1045 &dev_attr_in2_min.attr,
1046 &dev_attr_in3_min.attr,
1047 &dev_attr_in0_max.attr,
1048 &dev_attr_in1_max.attr,
1049 &dev_attr_in2_max.attr,
1050 &dev_attr_in3_max.attr,
1051 &dev_attr_temp1_input.attr,
1052 &dev_attr_temp2_input.attr,
1053 &dev_attr_temp3_input.attr,
1054 &dev_attr_temp1_min.attr,
1055 &dev_attr_temp2_min.attr,
1056 &dev_attr_temp3_min.attr,
1057 &dev_attr_temp1_max.attr,
1058 &dev_attr_temp2_max.attr,
1059 &dev_attr_temp3_max.attr,
1060 &dev_attr_vrm.attr,
1061 &dev_attr_cpu0_vid.attr,
1062 &dev_attr_alarms.attr,
1063 &dev_attr_pwm1_auto_channels.attr,
1064 &dev_attr_pwm2_auto_channels.attr,
1065 &dev_attr_pwm3_auto_channels.attr,
1066 &dev_attr_pwm1_auto_pwm_min.attr,
1067 &dev_attr_pwm2_auto_pwm_min.attr,
1068 &dev_attr_pwm3_auto_pwm_min.attr,
1069 &dev_attr_pwm1_auto_pwm_minctl.attr,
1070 &dev_attr_pwm2_auto_pwm_minctl.attr,
1071 &dev_attr_pwm3_auto_pwm_minctl.attr,
1072 &dev_attr_pwm1_auto_pwm_freq.attr,
1073 &dev_attr_pwm2_auto_pwm_freq.attr,
1074 &dev_attr_pwm3_auto_pwm_freq.attr,
1075 &dev_attr_temp1_auto_temp_off.attr,
1076 &dev_attr_temp2_auto_temp_off.attr,
1077 &dev_attr_temp3_auto_temp_off.attr,
1078 &dev_attr_temp1_auto_temp_min.attr,
1079 &dev_attr_temp2_auto_temp_min.attr,
1080 &dev_attr_temp3_auto_temp_min.attr,
1081 &dev_attr_temp1_auto_temp_max.attr,
1082 &dev_attr_temp2_auto_temp_max.attr,
1083 &dev_attr_temp3_auto_temp_max.attr,
1084 &dev_attr_temp1_auto_temp_crit.attr,
1085 &dev_attr_temp2_auto_temp_crit.attr,
1086 &dev_attr_temp3_auto_temp_crit.attr,
1087
1088 NULL
1089 };
1090
1091 static const struct attribute_group lm85_group = {
1092 .attrs = lm85_attributes,
1093 };
1094
1095 static struct attribute *lm85_attributes_opt[] = {
1096 &dev_attr_in4_input.attr,
1097 &dev_attr_in4_min.attr,
1098 &dev_attr_in4_max.attr,
1099
1100 NULL
1101 };
1102
1103 static const struct attribute_group lm85_group_opt = {
1104 .attrs = lm85_attributes_opt,
1105 };
1106
1107 static int lm85_detect(struct i2c_adapter *adapter, int address,
1108 int kind)
1109 {
1110 int company, verstep ;
1111 struct i2c_client *new_client = NULL;
1112 struct lm85_data *data;
1113 int err = 0;
1114 const char *type_name = "";
1115
1116 if (!i2c_check_functionality(adapter,
1117 I2C_FUNC_SMBUS_BYTE_DATA)) {
1118 /* We need to be able to do byte I/O */
1119 goto ERROR0 ;
1120 };
1121
1122 /* OK. For now, we presume we have a valid client. We now create the
1123 client structure, even though we cannot fill it completely yet.
1124 But it allows us to access lm85_{read,write}_value. */
1125
1126 if (!(data = kzalloc(sizeof(struct lm85_data), GFP_KERNEL))) {
1127 err = -ENOMEM;
1128 goto ERROR0;
1129 }
1130
1131 new_client = &data->client;
1132 i2c_set_clientdata(new_client, data);
1133 new_client->addr = address;
1134 new_client->adapter = adapter;
1135 new_client->driver = &lm85_driver;
1136 new_client->flags = 0;
1137
1138 /* Now, we do the remaining detection. */
1139
1140 company = lm85_read_value(new_client, LM85_REG_COMPANY);
1141 verstep = lm85_read_value(new_client, LM85_REG_VERSTEP);
1142
1143 dev_dbg(&adapter->dev, "Detecting device at %d,0x%02x with"
1144 " COMPANY: 0x%02x and VERSTEP: 0x%02x\n",
1145 i2c_adapter_id(new_client->adapter), new_client->addr,
1146 company, verstep);
1147
1148 /* If auto-detecting, Determine the chip type. */
1149 if (kind <= 0) {
1150 dev_dbg(&adapter->dev, "Autodetecting device at %d,0x%02x ...\n",
1151 i2c_adapter_id(adapter), address );
1152 if( company == LM85_COMPANY_NATIONAL
1153 && verstep == LM85_VERSTEP_LM85C ) {
1154 kind = lm85c ;
1155 } else if( company == LM85_COMPANY_NATIONAL
1156 && verstep == LM85_VERSTEP_LM85B ) {
1157 kind = lm85b ;
1158 } else if( company == LM85_COMPANY_NATIONAL
1159 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC ) {
1160 dev_err(&adapter->dev, "Unrecognized version/stepping 0x%02x"
1161 " Defaulting to LM85.\n", verstep);
1162 kind = any_chip ;
1163 } else if( company == LM85_COMPANY_ANALOG_DEV
1164 && verstep == LM85_VERSTEP_ADM1027 ) {
1165 kind = adm1027 ;
1166 } else if( company == LM85_COMPANY_ANALOG_DEV
1167 && (verstep == LM85_VERSTEP_ADT7463
1168 || verstep == LM85_VERSTEP_ADT7463C) ) {
1169 kind = adt7463 ;
1170 } else if( company == LM85_COMPANY_ANALOG_DEV
1171 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC ) {
1172 dev_err(&adapter->dev, "Unrecognized version/stepping 0x%02x"
1173 " Defaulting to Generic LM85.\n", verstep );
1174 kind = any_chip ;
1175 } else if( company == LM85_COMPANY_SMSC
1176 && (verstep == LM85_VERSTEP_EMC6D100_A0
1177 || verstep == LM85_VERSTEP_EMC6D100_A1) ) {
1178 /* Unfortunately, we can't tell a '100 from a '101
1179 * from the registers. Since a '101 is a '100
1180 * in a package with fewer pins and therefore no
1181 * 3.3V, 1.5V or 1.8V inputs, perhaps if those
1182 * inputs read 0, then it's a '101.
1183 */
1184 kind = emc6d100 ;
1185 } else if( company == LM85_COMPANY_SMSC
1186 && verstep == LM85_VERSTEP_EMC6D102) {
1187 kind = emc6d102 ;
1188 } else if( company == LM85_COMPANY_SMSC
1189 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) {
1190 dev_err(&adapter->dev, "lm85: Detected SMSC chip\n");
1191 dev_err(&adapter->dev, "lm85: Unrecognized version/stepping 0x%02x"
1192 " Defaulting to Generic LM85.\n", verstep );
1193 kind = any_chip ;
1194 } else if( kind == any_chip
1195 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) {
1196 dev_err(&adapter->dev, "Generic LM85 Version 6 detected\n");
1197 /* Leave kind as "any_chip" */
1198 } else {
1199 dev_dbg(&adapter->dev, "Autodetection failed\n");
1200 /* Not an LM85 ... */
1201 if( kind == any_chip ) { /* User used force=x,y */
1202 dev_err(&adapter->dev, "Generic LM85 Version 6 not"
1203 " found at %d,0x%02x. Try force_lm85c.\n",
1204 i2c_adapter_id(adapter), address );
1205 }
1206 err = 0 ;
1207 goto ERROR1;
1208 }
1209 }
1210
1211 /* Fill in the chip specific driver values */
1212 if ( kind == any_chip ) {
1213 type_name = "lm85";
1214 } else if ( kind == lm85b ) {
1215 type_name = "lm85b";
1216 } else if ( kind == lm85c ) {
1217 type_name = "lm85c";
1218 } else if ( kind == adm1027 ) {
1219 type_name = "adm1027";
1220 } else if ( kind == adt7463 ) {
1221 type_name = "adt7463";
1222 } else if ( kind == emc6d100){
1223 type_name = "emc6d100";
1224 } else if ( kind == emc6d102 ) {
1225 type_name = "emc6d102";
1226 }
1227 strlcpy(new_client->name, type_name, I2C_NAME_SIZE);
1228
1229 /* Fill in the remaining client fields */
1230 data->type = kind;
1231 data->valid = 0;
1232 mutex_init(&data->update_lock);
1233
1234 /* Tell the I2C layer a new client has arrived */
1235 if ((err = i2c_attach_client(new_client)))
1236 goto ERROR1;
1237
1238 /* Set the VRM version */
1239 data->vrm = vid_which_vrm();
1240
1241 /* Initialize the LM85 chip */
1242 lm85_init_client(new_client);
1243
1244 /* Register sysfs hooks */
1245 if ((err = sysfs_create_group(&new_client->dev.kobj, &lm85_group)))
1246 goto ERROR2;
1247
1248 /* The ADT7463 has an optional VRM 10 mode where pin 21 is used
1249 as a sixth digital VID input rather than an analog input. */
1250 data->vid = lm85_read_value(new_client, LM85_REG_VID);
1251 if (!(kind == adt7463 && (data->vid & 0x80)))
1252 if ((err = device_create_file(&new_client->dev,
1253 &dev_attr_in4_input))
1254 || (err = device_create_file(&new_client->dev,
1255 &dev_attr_in4_min))
1256 || (err = device_create_file(&new_client->dev,
1257 &dev_attr_in4_max)))
1258 goto ERROR3;
1259
1260 data->class_dev = hwmon_device_register(&new_client->dev);
1261 if (IS_ERR(data->class_dev)) {
1262 err = PTR_ERR(data->class_dev);
1263 goto ERROR3;
1264 }
1265
1266 return 0;
1267
1268 /* Error out and cleanup code */
1269 ERROR3:
1270 sysfs_remove_group(&new_client->dev.kobj, &lm85_group);
1271 sysfs_remove_group(&new_client->dev.kobj, &lm85_group_opt);
1272 ERROR2:
1273 i2c_detach_client(new_client);
1274 ERROR1:
1275 kfree(data);
1276 ERROR0:
1277 return err;
1278 }
1279
1280 static int lm85_detach_client(struct i2c_client *client)
1281 {
1282 struct lm85_data *data = i2c_get_clientdata(client);
1283 hwmon_device_unregister(data->class_dev);
1284 sysfs_remove_group(&client->dev.kobj, &lm85_group);
1285 sysfs_remove_group(&client->dev.kobj, &lm85_group_opt);
1286 i2c_detach_client(client);
1287 kfree(data);
1288 return 0;
1289 }
1290
1291
1292 static int lm85_read_value(struct i2c_client *client, u8 reg)
1293 {
1294 int res;
1295
1296 /* What size location is it? */
1297 switch( reg ) {
1298 case LM85_REG_FAN(0) : /* Read WORD data */
1299 case LM85_REG_FAN(1) :
1300 case LM85_REG_FAN(2) :
1301 case LM85_REG_FAN(3) :
1302 case LM85_REG_FAN_MIN(0) :
1303 case LM85_REG_FAN_MIN(1) :
1304 case LM85_REG_FAN_MIN(2) :
1305 case LM85_REG_FAN_MIN(3) :
1306 case LM85_REG_ALARM1 : /* Read both bytes at once */
1307 res = i2c_smbus_read_byte_data(client, reg) & 0xff ;
1308 res |= i2c_smbus_read_byte_data(client, reg+1) << 8 ;
1309 break ;
1310 case ADT7463_REG_TMIN_CTL1 : /* Read WORD MSB, LSB */
1311 res = i2c_smbus_read_byte_data(client, reg) << 8 ;
1312 res |= i2c_smbus_read_byte_data(client, reg+1) & 0xff ;
1313 break ;
1314 default: /* Read BYTE data */
1315 res = i2c_smbus_read_byte_data(client, reg);
1316 break ;
1317 }
1318
1319 return res ;
1320 }
1321
1322 static int lm85_write_value(struct i2c_client *client, u8 reg, int value)
1323 {
1324 int res ;
1325
1326 switch( reg ) {
1327 case LM85_REG_FAN(0) : /* Write WORD data */
1328 case LM85_REG_FAN(1) :
1329 case LM85_REG_FAN(2) :
1330 case LM85_REG_FAN(3) :
1331 case LM85_REG_FAN_MIN(0) :
1332 case LM85_REG_FAN_MIN(1) :
1333 case LM85_REG_FAN_MIN(2) :
1334 case LM85_REG_FAN_MIN(3) :
1335 /* NOTE: ALARM is read only, so not included here */
1336 res = i2c_smbus_write_byte_data(client, reg, value & 0xff) ;
1337 res |= i2c_smbus_write_byte_data(client, reg+1, (value>>8) & 0xff) ;
1338 break ;
1339 case ADT7463_REG_TMIN_CTL1 : /* Write WORD MSB, LSB */
1340 res = i2c_smbus_write_byte_data(client, reg, (value>>8) & 0xff);
1341 res |= i2c_smbus_write_byte_data(client, reg+1, value & 0xff) ;
1342 break ;
1343 default: /* Write BYTE data */
1344 res = i2c_smbus_write_byte_data(client, reg, value);
1345 break ;
1346 }
1347
1348 return res ;
1349 }
1350
1351 static void lm85_init_client(struct i2c_client *client)
1352 {
1353 int value;
1354 struct lm85_data *data = i2c_get_clientdata(client);
1355
1356 dev_dbg(&client->dev, "Initializing device\n");
1357
1358 /* Warn if part was not "READY" */
1359 value = lm85_read_value(client, LM85_REG_CONFIG);
1360 dev_dbg(&client->dev, "LM85_REG_CONFIG is: 0x%02x\n", value);
1361 if( value & 0x02 ) {
1362 dev_err(&client->dev, "Client (%d,0x%02x) config is locked.\n",
1363 i2c_adapter_id(client->adapter), client->addr );
1364 };
1365 if( ! (value & 0x04) ) {
1366 dev_err(&client->dev, "Client (%d,0x%02x) is not ready.\n",
1367 i2c_adapter_id(client->adapter), client->addr );
1368 };
1369 if( value & 0x10
1370 && ( data->type == adm1027
1371 || data->type == adt7463 ) ) {
1372 dev_err(&client->dev, "Client (%d,0x%02x) VxI mode is set. "
1373 "Please report this to the lm85 maintainer.\n",
1374 i2c_adapter_id(client->adapter), client->addr );
1375 };
1376
1377 /* WE INTENTIONALLY make no changes to the limits,
1378 * offsets, pwms, fans and zones. If they were
1379 * configured, we don't want to mess with them.
1380 * If they weren't, the default is 100% PWM, no
1381 * control and will suffice until 'sensors -s'
1382 * can be run by the user.
1383 */
1384
1385 /* Start monitoring */
1386 value = lm85_read_value(client, LM85_REG_CONFIG);
1387 /* Try to clear LOCK, Set START, save everything else */
1388 value = (value & ~ 0x02) | 0x01 ;
1389 dev_dbg(&client->dev, "Setting CONFIG to: 0x%02x\n", value);
1390 lm85_write_value(client, LM85_REG_CONFIG, value);
1391 }
1392
1393 static struct lm85_data *lm85_update_device(struct device *dev)
1394 {
1395 struct i2c_client *client = to_i2c_client(dev);
1396 struct lm85_data *data = i2c_get_clientdata(client);
1397 int i;
1398
1399 mutex_lock(&data->update_lock);
1400
1401 if ( !data->valid ||
1402 time_after(jiffies, data->last_reading + LM85_DATA_INTERVAL) ) {
1403 /* Things that change quickly */
1404 dev_dbg(&client->dev, "Reading sensor values\n");
1405
1406 /* Have to read extended bits first to "freeze" the
1407 * more significant bits that are read later.
1408 */
1409 if ( (data->type == adm1027) || (data->type == adt7463) ) {
1410 int ext1 = lm85_read_value(client,
1411 ADM1027_REG_EXTEND_ADC1);
1412 int ext2 = lm85_read_value(client,
1413 ADM1027_REG_EXTEND_ADC2);
1414 int val = (ext1 << 8) + ext2;
1415
1416 for(i = 0; i <= 4; i++)
1417 data->in_ext[i] = (val>>(i * 2))&0x03;
1418
1419 for(i = 0; i <= 2; i++)
1420 data->temp_ext[i] = (val>>((i + 5) * 2))&0x03;
1421 }
1422
1423 /* adc_scale is 2^(number of LSBs). There are 4 extra bits in
1424 the emc6d102 and 2 in the adt7463 and adm1027. In all
1425 other chips ext is always 0 and the value of scale is
1426 irrelevant. So it is left in 4*/
1427 data->adc_scale = (data->type == emc6d102 ) ? 16 : 4;
1428
1429 data->vid = lm85_read_value(client, LM85_REG_VID);
1430
1431 for (i = 0; i <= 3; ++i) {
1432 data->in[i] =
1433 lm85_read_value(client, LM85_REG_IN(i));
1434 }
1435
1436 if (!(data->type == adt7463 && (data->vid & 0x80))) {
1437 data->in[4] = lm85_read_value(client,
1438 LM85_REG_IN(4));
1439 }
1440
1441 for (i = 0; i <= 3; ++i) {
1442 data->fan[i] =
1443 lm85_read_value(client, LM85_REG_FAN(i));
1444 }
1445
1446 for (i = 0; i <= 2; ++i) {
1447 data->temp[i] =
1448 lm85_read_value(client, LM85_REG_TEMP(i));
1449 }
1450
1451 for (i = 0; i <= 2; ++i) {
1452 data->pwm[i] =
1453 lm85_read_value(client, LM85_REG_PWM(i));
1454 }
1455
1456 data->alarms = lm85_read_value(client, LM85_REG_ALARM1);
1457
1458 if ( data->type == adt7463 ) {
1459 if( data->therm_total < ULONG_MAX - 256 ) {
1460 data->therm_total +=
1461 lm85_read_value(client, ADT7463_REG_THERM );
1462 }
1463 } else if ( data->type == emc6d100 ) {
1464 /* Three more voltage sensors */
1465 for (i = 5; i <= 7; ++i) {
1466 data->in[i] =
1467 lm85_read_value(client, EMC6D100_REG_IN(i));
1468 }
1469 /* More alarm bits */
1470 data->alarms |=
1471 lm85_read_value(client, EMC6D100_REG_ALARM3) << 16;
1472 } else if (data->type == emc6d102 ) {
1473 /* Have to read LSB bits after the MSB ones because
1474 the reading of the MSB bits has frozen the
1475 LSBs (backward from the ADM1027).
1476 */
1477 int ext1 = lm85_read_value(client,
1478 EMC6D102_REG_EXTEND_ADC1);
1479 int ext2 = lm85_read_value(client,
1480 EMC6D102_REG_EXTEND_ADC2);
1481 int ext3 = lm85_read_value(client,
1482 EMC6D102_REG_EXTEND_ADC3);
1483 int ext4 = lm85_read_value(client,
1484 EMC6D102_REG_EXTEND_ADC4);
1485 data->in_ext[0] = ext3 & 0x0f;
1486 data->in_ext[1] = ext4 & 0x0f;
1487 data->in_ext[2] = (ext4 >> 4) & 0x0f;
1488 data->in_ext[3] = (ext3 >> 4) & 0x0f;
1489 data->in_ext[4] = (ext2 >> 4) & 0x0f;
1490
1491 data->temp_ext[0] = ext1 & 0x0f;
1492 data->temp_ext[1] = ext2 & 0x0f;
1493 data->temp_ext[2] = (ext1 >> 4) & 0x0f;
1494 }
1495
1496 data->last_reading = jiffies ;
1497 }; /* last_reading */
1498
1499 if ( !data->valid ||
1500 time_after(jiffies, data->last_config + LM85_CONFIG_INTERVAL) ) {
1501 /* Things that don't change often */
1502 dev_dbg(&client->dev, "Reading config values\n");
1503
1504 for (i = 0; i <= 3; ++i) {
1505 data->in_min[i] =
1506 lm85_read_value(client, LM85_REG_IN_MIN(i));
1507 data->in_max[i] =
1508 lm85_read_value(client, LM85_REG_IN_MAX(i));
1509 }
1510
1511 if (!(data->type == adt7463 && (data->vid & 0x80))) {
1512 data->in_min[4] = lm85_read_value(client,
1513 LM85_REG_IN_MIN(4));
1514 data->in_max[4] = lm85_read_value(client,
1515 LM85_REG_IN_MAX(4));
1516 }
1517
1518 if ( data->type == emc6d100 ) {
1519 for (i = 5; i <= 7; ++i) {
1520 data->in_min[i] =
1521 lm85_read_value(client, EMC6D100_REG_IN_MIN(i));
1522 data->in_max[i] =
1523 lm85_read_value(client, EMC6D100_REG_IN_MAX(i));
1524 }
1525 }
1526
1527 for (i = 0; i <= 3; ++i) {
1528 data->fan_min[i] =
1529 lm85_read_value(client, LM85_REG_FAN_MIN(i));
1530 }
1531
1532 for (i = 0; i <= 2; ++i) {
1533 data->temp_min[i] =
1534 lm85_read_value(client, LM85_REG_TEMP_MIN(i));
1535 data->temp_max[i] =
1536 lm85_read_value(client, LM85_REG_TEMP_MAX(i));
1537 }
1538
1539 for (i = 0; i <= 2; ++i) {
1540 int val ;
1541 data->autofan[i].config =
1542 lm85_read_value(client, LM85_REG_AFAN_CONFIG(i));
1543 val = lm85_read_value(client, LM85_REG_AFAN_RANGE(i));
1544 data->autofan[i].freq = val & 0x07 ;
1545 data->zone[i].range = (val >> 4) & 0x0f ;
1546 data->autofan[i].min_pwm =
1547 lm85_read_value(client, LM85_REG_AFAN_MINPWM(i));
1548 data->zone[i].limit =
1549 lm85_read_value(client, LM85_REG_AFAN_LIMIT(i));
1550 data->zone[i].critical =
1551 lm85_read_value(client, LM85_REG_AFAN_CRITICAL(i));
1552 }
1553
1554 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE1);
1555 data->smooth[0] = i & 0x0f ;
1556 data->syncpwm3 = i & 0x10 ; /* Save PWM3 config */
1557 data->autofan[0].min_off = (i & 0x20) != 0 ;
1558 data->autofan[1].min_off = (i & 0x40) != 0 ;
1559 data->autofan[2].min_off = (i & 0x80) != 0 ;
1560 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE2);
1561 data->smooth[1] = (i>>4) & 0x0f ;
1562 data->smooth[2] = i & 0x0f ;
1563
1564 i = lm85_read_value(client, LM85_REG_AFAN_HYST1);
1565 data->zone[0].hyst = (i>>4) & 0x0f ;
1566 data->zone[1].hyst = i & 0x0f ;
1567
1568 i = lm85_read_value(client, LM85_REG_AFAN_HYST2);
1569 data->zone[2].hyst = (i>>4) & 0x0f ;
1570
1571 if ( (data->type == lm85b) || (data->type == lm85c) ) {
1572 data->tach_mode = lm85_read_value(client,
1573 LM85_REG_TACH_MODE );
1574 data->spinup_ctl = lm85_read_value(client,
1575 LM85_REG_SPINUP_CTL );
1576 } else if ( (data->type == adt7463) || (data->type == adm1027) ) {
1577 if ( data->type == adt7463 ) {
1578 for (i = 0; i <= 2; ++i) {
1579 data->oppoint[i] = lm85_read_value(client,
1580 ADT7463_REG_OPPOINT(i) );
1581 }
1582 data->tmin_ctl = lm85_read_value(client,
1583 ADT7463_REG_TMIN_CTL1 );
1584 data->therm_limit = lm85_read_value(client,
1585 ADT7463_REG_THERM_LIMIT );
1586 }
1587 for (i = 0; i <= 2; ++i) {
1588 data->temp_offset[i] = lm85_read_value(client,
1589 ADM1027_REG_TEMP_OFFSET(i) );
1590 }
1591 data->tach_mode = lm85_read_value(client,
1592 ADM1027_REG_CONFIG3 );
1593 data->fan_ppr = lm85_read_value(client,
1594 ADM1027_REG_FAN_PPR );
1595 }
1596
1597 data->last_config = jiffies;
1598 }; /* last_config */
1599
1600 data->valid = 1;
1601
1602 mutex_unlock(&data->update_lock);
1603
1604 return data;
1605 }
1606
1607
1608 static int __init sm_lm85_init(void)
1609 {
1610 return i2c_add_driver(&lm85_driver);
1611 }
1612
1613 static void __exit sm_lm85_exit(void)
1614 {
1615 i2c_del_driver(&lm85_driver);
1616 }
1617
1618 /* Thanks to Richard Barrington for adding the LM85 to sensors-detect.
1619 * Thanks to Margit Schubert-While <margitsw@t-online.de> for help with
1620 * post 2.7.0 CVS changes.
1621 */
1622 MODULE_LICENSE("GPL");
1623 MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, Margit Schubert-While <margitsw@t-online.de>, Justin Thiessen <jthiessen@penguincomputing.com");
1624 MODULE_DESCRIPTION("LM85-B, LM85-C driver");
1625
1626 module_init(sm_lm85_init);
1627 module_exit(sm_lm85_exit);
Tomato firmware and modifications.