8976565113f490e9ff1e676c4bc063597385fe4a
[linux-3.10.git] / drivers / hwmon / lm85.c
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/i2c-sensor.h>
32 #include <linux/i2c-vid.h>
33 #include <linux/hwmon.h>
34 #include <linux/err.h>
35
36 /* Addresses to scan */
37 static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
38
39 /* Insmod parameters */
40 SENSORS_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 /* For each registered LM85, we need to keep some data in memory. That
302    data is pointed to by lm85_list[NR]->data. The structure itself is
303    dynamically allocated, at the same time when a new lm85 client is
304    allocated. */
305
306 /* LM85 can automatically adjust fan speeds based on temperature
307  * This structure encapsulates an entire Zone config.  There are
308  * three zones (one for each temperature input) on the lm85
309  */
310 struct lm85_zone {
311         s8 limit;       /* Low temp limit */
312         u8 hyst;        /* Low limit hysteresis. (0-15) */
313         u8 range;       /* Temp range, encoded */
314         s8 critical;    /* "All fans ON" temp limit */
315         u8 off_desired; /* Actual "off" temperature specified.  Preserved 
316                          * to prevent "drift" as other autofan control
317                          * values change.
318                          */
319         u8 max_desired; /* Actual "max" temperature specified.  Preserved 
320                          * to prevent "drift" as other autofan control
321                          * values change.
322                          */
323 };
324
325 struct lm85_autofan {
326         u8 config;      /* Register value */
327         u8 freq;        /* PWM frequency, encoded */
328         u8 min_pwm;     /* Minimum PWM value, encoded */
329         u8 min_off;     /* Min PWM or OFF below "limit", flag */
330 };
331
332 struct lm85_data {
333         struct i2c_client client;
334         struct class_device *class_dev;
335         struct semaphore lock;
336         enum chips type;
337
338         struct semaphore update_lock;
339         int valid;              /* !=0 if following fields are valid */
340         unsigned long last_reading;     /* In jiffies */
341         unsigned long last_config;      /* In jiffies */
342
343         u8 in[8];               /* Register value */
344         u8 in_max[8];           /* Register value */
345         u8 in_min[8];           /* Register value */
346         s8 temp[3];             /* Register value */
347         s8 temp_min[3];         /* Register value */
348         s8 temp_max[3];         /* Register value */
349         s8 temp_offset[3];      /* Register value */
350         u16 fan[4];             /* Register value */
351         u16 fan_min[4];         /* Register value */
352         u8 pwm[3];              /* Register value */
353         u8 spinup_ctl;          /* Register encoding, combined */
354         u8 tach_mode;           /* Register encoding, combined */
355         u8 temp_ext[3];         /* Decoded values */
356         u8 in_ext[8];           /* Decoded values */
357         u8 adc_scale;           /* ADC Extended bits scaling factor */
358         u8 fan_ppr;             /* Register value */
359         u8 smooth[3];           /* Register encoding */
360         u8 vid;                 /* Register value */
361         u8 vrm;                 /* VRM version */
362         u8 syncpwm3;            /* Saved PWM3 for TACH 2,3,4 config */
363         u8 oppoint[3];          /* Register value */
364         u16 tmin_ctl;           /* Register value */
365         unsigned long therm_total; /* Cummulative therm count */
366         u8 therm_limit;         /* Register value */
367         u32 alarms;             /* Register encoding, combined */
368         struct lm85_autofan autofan[3];
369         struct lm85_zone zone[3];
370 };
371
372 static int lm85_attach_adapter(struct i2c_adapter *adapter);
373 static int lm85_detect(struct i2c_adapter *adapter, int address,
374                         int kind);
375 static int lm85_detach_client(struct i2c_client *client);
376
377 static int lm85_read_value(struct i2c_client *client, u8 register);
378 static int lm85_write_value(struct i2c_client *client, u8 register, int value);
379 static struct lm85_data *lm85_update_device(struct device *dev);
380 static void lm85_init_client(struct i2c_client *client);
381
382
383 static struct i2c_driver lm85_driver = {
384         .owner          = THIS_MODULE,
385         .name           = "lm85",
386         .id             = I2C_DRIVERID_LM85,
387         .flags          = I2C_DF_NOTIFY,
388         .attach_adapter = lm85_attach_adapter,
389         .detach_client  = lm85_detach_client,
390 };
391
392
393 /* 4 Fans */
394 static ssize_t show_fan(struct device *dev, char *buf, int nr)
395 {
396         struct lm85_data *data = lm85_update_device(dev);
397         return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan[nr]) );
398 }
399 static ssize_t show_fan_min(struct device *dev, char *buf, int nr)
400 {
401         struct lm85_data *data = lm85_update_device(dev);
402         return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan_min[nr]) );
403 }
404 static ssize_t set_fan_min(struct device *dev, const char *buf, 
405                 size_t count, int nr)
406 {
407         struct i2c_client *client = to_i2c_client(dev);
408         struct lm85_data *data = i2c_get_clientdata(client);
409         long val = simple_strtol(buf, NULL, 10);
410
411         down(&data->update_lock);
412         data->fan_min[nr] = FAN_TO_REG(val);
413         lm85_write_value(client, LM85_REG_FAN_MIN(nr), data->fan_min[nr]);
414         up(&data->update_lock);
415         return count;
416 }
417
418 #define show_fan_offset(offset)                                         \
419 static ssize_t show_fan_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
420 {                                                                       \
421         return show_fan(dev, buf, offset - 1);                          \
422 }                                                                       \
423 static ssize_t show_fan_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf)   \
424 {                                                                       \
425         return show_fan_min(dev, buf, offset - 1);                      \
426 }                                                                       \
427 static ssize_t set_fan_##offset##_min (struct device *dev, struct device_attribute *attr,               \
428         const char *buf, size_t count)                                  \
429 {                                                                       \
430         return set_fan_min(dev, buf, count, offset - 1);                \
431 }                                                                       \
432 static DEVICE_ATTR(fan##offset##_input, S_IRUGO, show_fan_##offset,     \
433                 NULL);                                                  \
434 static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR,                \
435                 show_fan_##offset##_min, set_fan_##offset##_min);
436
437 show_fan_offset(1);
438 show_fan_offset(2);
439 show_fan_offset(3);
440 show_fan_offset(4);
441
442 /* vid, vrm, alarms */
443
444 static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr, char *buf)
445 {
446         struct lm85_data *data = lm85_update_device(dev);
447         return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm));
448 }
449
450 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
451
452 static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr, char *buf)
453 {
454         struct lm85_data *data = lm85_update_device(dev);
455         return sprintf(buf, "%ld\n", (long) data->vrm);
456 }
457
458 static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
459 {
460         struct i2c_client *client = to_i2c_client(dev);
461         struct lm85_data *data = i2c_get_clientdata(client);
462         u32 val;
463
464         val = simple_strtoul(buf, NULL, 10);
465         data->vrm = val;
466         return count;
467 }
468
469 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
470
471 static ssize_t show_alarms_reg(struct device *dev, struct device_attribute *attr, char *buf)
472 {
473         struct lm85_data *data = lm85_update_device(dev);
474         return sprintf(buf, "%u\n", data->alarms);
475 }
476
477 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
478
479 /* pwm */
480
481 static ssize_t show_pwm(struct device *dev, char *buf, int nr)
482 {
483         struct lm85_data *data = lm85_update_device(dev);
484         return sprintf(buf,"%d\n", PWM_FROM_REG(data->pwm[nr]) );
485 }
486 static ssize_t set_pwm(struct device *dev, const char *buf, 
487                 size_t count, int nr)
488 {
489         struct i2c_client *client = to_i2c_client(dev);
490         struct lm85_data *data = i2c_get_clientdata(client);
491         long val = simple_strtol(buf, NULL, 10);
492
493         down(&data->update_lock);
494         data->pwm[nr] = PWM_TO_REG(val);
495         lm85_write_value(client, LM85_REG_PWM(nr), data->pwm[nr]);
496         up(&data->update_lock);
497         return count;
498 }
499 static ssize_t show_pwm_enable(struct device *dev, char *buf, int nr)
500 {
501         struct lm85_data *data = lm85_update_device(dev);
502         int     pwm_zone;
503
504         pwm_zone = ZONE_FROM_REG(data->autofan[nr].config);
505         return sprintf(buf,"%d\n", (pwm_zone != 0 && pwm_zone != -1) );
506 }
507
508 #define show_pwm_reg(offset)                                            \
509 static ssize_t show_pwm_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
510 {                                                                       \
511         return show_pwm(dev, buf, offset - 1);                          \
512 }                                                                       \
513 static ssize_t set_pwm_##offset (struct device *dev, struct device_attribute *attr,                     \
514                                  const char *buf, size_t count)         \
515 {                                                                       \
516         return set_pwm(dev, buf, count, offset - 1);                    \
517 }                                                                       \
518 static ssize_t show_pwm_enable##offset (struct device *dev, struct device_attribute *attr, char *buf)   \
519 {                                                                       \
520         return show_pwm_enable(dev, buf, offset - 1);                   \
521 }                                                                       \
522 static DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR,                      \
523                 show_pwm_##offset, set_pwm_##offset);                   \
524 static DEVICE_ATTR(pwm##offset##_enable, S_IRUGO,                       \
525                 show_pwm_enable##offset, NULL);
526
527 show_pwm_reg(1);
528 show_pwm_reg(2);
529 show_pwm_reg(3);
530
531 /* Voltages */
532
533 static ssize_t show_in(struct device *dev, char *buf, int nr)
534 {
535         struct lm85_data *data = lm85_update_device(dev);
536         return sprintf( buf, "%d\n", INSEXT_FROM_REG(nr,
537                                                      data->in[nr],
538                                                      data->in_ext[nr],
539                                                      data->adc_scale) );
540 }
541 static ssize_t show_in_min(struct device *dev, char *buf, int nr)
542 {
543         struct lm85_data *data = lm85_update_device(dev);
544         return sprintf(buf,"%d\n", INS_FROM_REG(nr, data->in_min[nr]) );
545 }
546 static ssize_t set_in_min(struct device *dev, const char *buf, 
547                 size_t count, int nr)
548 {
549         struct i2c_client *client = to_i2c_client(dev);
550         struct lm85_data *data = i2c_get_clientdata(client);
551         long val = simple_strtol(buf, NULL, 10);
552
553         down(&data->update_lock);
554         data->in_min[nr] = INS_TO_REG(nr, val);
555         lm85_write_value(client, LM85_REG_IN_MIN(nr), data->in_min[nr]);
556         up(&data->update_lock);
557         return count;
558 }
559 static ssize_t show_in_max(struct device *dev, char *buf, int nr)
560 {
561         struct lm85_data *data = lm85_update_device(dev);
562         return sprintf(buf,"%d\n", INS_FROM_REG(nr, data->in_max[nr]) );
563 }
564 static ssize_t set_in_max(struct device *dev, const char *buf, 
565                 size_t count, int nr)
566 {
567         struct i2c_client *client = to_i2c_client(dev);
568         struct lm85_data *data = i2c_get_clientdata(client);
569         long val = simple_strtol(buf, NULL, 10);
570
571         down(&data->update_lock);
572         data->in_max[nr] = INS_TO_REG(nr, val);
573         lm85_write_value(client, LM85_REG_IN_MAX(nr), data->in_max[nr]);
574         up(&data->update_lock);
575         return count;
576 }
577 #define show_in_reg(offset)                                             \
578 static ssize_t show_in_##offset (struct device *dev, struct device_attribute *attr, char *buf)          \
579 {                                                                       \
580         return show_in(dev, buf, offset);                               \
581 }                                                                       \
582 static ssize_t show_in_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf)    \
583 {                                                                       \
584         return show_in_min(dev, buf, offset);                           \
585 }                                                                       \
586 static ssize_t show_in_##offset##_max (struct device *dev, struct device_attribute *attr, char *buf)    \
587 {                                                                       \
588         return show_in_max(dev, buf, offset);                           \
589 }                                                                       \
590 static ssize_t set_in_##offset##_min (struct device *dev, struct device_attribute *attr,                \
591         const char *buf, size_t count)                                  \
592 {                                                                       \
593         return set_in_min(dev, buf, count, offset);                     \
594 }                                                                       \
595 static ssize_t set_in_##offset##_max (struct device *dev, struct device_attribute *attr,                \
596         const char *buf, size_t count)                                  \
597 {                                                                       \
598         return set_in_max(dev, buf, count, offset);                     \
599 }                                                                       \
600 static DEVICE_ATTR(in##offset##_input, S_IRUGO, show_in_##offset,       \
601                 NULL);                                                  \
602 static DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR,                 \
603                 show_in_##offset##_min, set_in_##offset##_min);         \
604 static DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR,                 \
605                 show_in_##offset##_max, set_in_##offset##_max);
606
607 show_in_reg(0);
608 show_in_reg(1);
609 show_in_reg(2);
610 show_in_reg(3);
611 show_in_reg(4);
612
613 /* Temps */
614
615 static ssize_t show_temp(struct device *dev, char *buf, int nr)
616 {
617         struct lm85_data *data = lm85_update_device(dev);
618         return sprintf(buf,"%d\n", TEMPEXT_FROM_REG(data->temp[nr],
619                                                     data->temp_ext[nr],
620                                                     data->adc_scale) );
621 }
622 static ssize_t show_temp_min(struct device *dev, char *buf, int nr)
623 {
624         struct lm85_data *data = lm85_update_device(dev);
625         return sprintf(buf,"%d\n", TEMP_FROM_REG(data->temp_min[nr]) );
626 }
627 static ssize_t set_temp_min(struct device *dev, const char *buf, 
628                 size_t count, int nr)
629 {
630         struct i2c_client *client = to_i2c_client(dev);
631         struct lm85_data *data = i2c_get_clientdata(client);
632         long val = simple_strtol(buf, NULL, 10);
633
634         down(&data->update_lock);
635         data->temp_min[nr] = TEMP_TO_REG(val);
636         lm85_write_value(client, LM85_REG_TEMP_MIN(nr), data->temp_min[nr]);
637         up(&data->update_lock);
638         return count;
639 }
640 static ssize_t show_temp_max(struct device *dev, char *buf, int nr)
641 {
642         struct lm85_data *data = lm85_update_device(dev);
643         return sprintf(buf,"%d\n", TEMP_FROM_REG(data->temp_max[nr]) );
644 }
645 static ssize_t set_temp_max(struct device *dev, const char *buf, 
646                 size_t count, int nr)
647 {
648         struct i2c_client *client = to_i2c_client(dev);
649         struct lm85_data *data = i2c_get_clientdata(client);
650         long val = simple_strtol(buf, NULL, 10);        
651
652         down(&data->update_lock);
653         data->temp_max[nr] = TEMP_TO_REG(val);
654         lm85_write_value(client, LM85_REG_TEMP_MAX(nr), data->temp_max[nr]);
655         up(&data->update_lock);
656         return count;
657 }
658 #define show_temp_reg(offset)                                           \
659 static ssize_t show_temp_##offset (struct device *dev, struct device_attribute *attr, char *buf)        \
660 {                                                                       \
661         return show_temp(dev, buf, offset - 1);                         \
662 }                                                                       \
663 static ssize_t show_temp_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf)  \
664 {                                                                       \
665         return show_temp_min(dev, buf, offset - 1);                     \
666 }                                                                       \
667 static ssize_t show_temp_##offset##_max (struct device *dev, struct device_attribute *attr, char *buf)  \
668 {                                                                       \
669         return show_temp_max(dev, buf, offset - 1);                     \
670 }                                                                       \
671 static ssize_t set_temp_##offset##_min (struct device *dev, struct device_attribute *attr,              \
672         const char *buf, size_t count)                                  \
673 {                                                                       \
674         return set_temp_min(dev, buf, count, offset - 1);               \
675 }                                                                       \
676 static ssize_t set_temp_##offset##_max (struct device *dev, struct device_attribute *attr,              \
677         const char *buf, size_t count)                                  \
678 {                                                                       \
679         return set_temp_max(dev, buf, count, offset - 1);               \
680 }                                                                       \
681 static DEVICE_ATTR(temp##offset##_input, S_IRUGO, show_temp_##offset,   \
682                 NULL);                                                  \
683 static DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR,               \
684                 show_temp_##offset##_min, set_temp_##offset##_min);     \
685 static DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR,               \
686                 show_temp_##offset##_max, set_temp_##offset##_max);
687
688 show_temp_reg(1);
689 show_temp_reg(2);
690 show_temp_reg(3);
691
692
693 /* Automatic PWM control */
694
695 static ssize_t show_pwm_auto_channels(struct device *dev, char *buf, int nr)
696 {
697         struct lm85_data *data = lm85_update_device(dev);
698         return sprintf(buf,"%d\n", ZONE_FROM_REG(data->autofan[nr].config));
699 }
700 static ssize_t set_pwm_auto_channels(struct device *dev, const char *buf,
701         size_t count, int nr)
702 {
703         struct i2c_client *client = to_i2c_client(dev);
704         struct lm85_data *data = i2c_get_clientdata(client);
705         long val = simple_strtol(buf, NULL, 10);   
706
707         down(&data->update_lock);
708         data->autofan[nr].config = (data->autofan[nr].config & (~0xe0))
709                 | ZONE_TO_REG(val) ;
710         lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr),
711                 data->autofan[nr].config);
712         up(&data->update_lock);
713         return count;
714 }
715 static ssize_t show_pwm_auto_pwm_min(struct device *dev, char *buf, int nr)
716 {
717         struct lm85_data *data = lm85_update_device(dev);
718         return sprintf(buf,"%d\n", PWM_FROM_REG(data->autofan[nr].min_pwm));
719 }
720 static ssize_t set_pwm_auto_pwm_min(struct device *dev, const char *buf,
721         size_t count, int nr)
722 {
723         struct i2c_client *client = to_i2c_client(dev);
724         struct lm85_data *data = i2c_get_clientdata(client);
725         long val = simple_strtol(buf, NULL, 10);
726
727         down(&data->update_lock);
728         data->autofan[nr].min_pwm = PWM_TO_REG(val);
729         lm85_write_value(client, LM85_REG_AFAN_MINPWM(nr),
730                 data->autofan[nr].min_pwm);
731         up(&data->update_lock);
732         return count;
733 }
734 static ssize_t show_pwm_auto_pwm_minctl(struct device *dev, char *buf, int nr)
735 {
736         struct lm85_data *data = lm85_update_device(dev);
737         return sprintf(buf,"%d\n", data->autofan[nr].min_off);
738 }
739 static ssize_t set_pwm_auto_pwm_minctl(struct device *dev, const char *buf,
740         size_t count, int nr)
741 {
742         struct i2c_client *client = to_i2c_client(dev);
743         struct lm85_data *data = i2c_get_clientdata(client);
744         long val = simple_strtol(buf, NULL, 10);
745
746         down(&data->update_lock);
747         data->autofan[nr].min_off = val;
748         lm85_write_value(client, LM85_REG_AFAN_SPIKE1, data->smooth[0]
749                 | data->syncpwm3
750                 | (data->autofan[0].min_off ? 0x20 : 0)
751                 | (data->autofan[1].min_off ? 0x40 : 0)
752                 | (data->autofan[2].min_off ? 0x80 : 0)
753         );
754         up(&data->update_lock);
755         return count;
756 }
757 static ssize_t show_pwm_auto_pwm_freq(struct device *dev, char *buf, int nr)
758 {
759         struct lm85_data *data = lm85_update_device(dev);
760         return sprintf(buf,"%d\n", FREQ_FROM_REG(data->autofan[nr].freq));
761 }
762 static ssize_t set_pwm_auto_pwm_freq(struct device *dev, const char *buf,
763                 size_t count, int nr)
764 {
765         struct i2c_client *client = to_i2c_client(dev);
766         struct lm85_data *data = i2c_get_clientdata(client);
767         long val = simple_strtol(buf, NULL, 10);
768
769         down(&data->update_lock);
770         data->autofan[nr].freq = FREQ_TO_REG(val);
771         lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
772                 (data->zone[nr].range << 4)
773                 | data->autofan[nr].freq
774         ); 
775         up(&data->update_lock);
776         return count;
777 }
778 #define pwm_auto(offset)                                                \
779 static ssize_t show_pwm##offset##_auto_channels (struct device *dev, struct device_attribute *attr,     \
780         char *buf)                                                      \
781 {                                                                       \
782         return show_pwm_auto_channels(dev, buf, offset - 1);            \
783 }                                                                       \
784 static ssize_t set_pwm##offset##_auto_channels (struct device *dev, struct device_attribute *attr,      \
785         const char *buf, size_t count)                                  \
786 {                                                                       \
787         return set_pwm_auto_channels(dev, buf, count, offset - 1);      \
788 }                                                                       \
789 static ssize_t show_pwm##offset##_auto_pwm_min (struct device *dev, struct device_attribute *attr,      \
790         char *buf)                                                      \
791 {                                                                       \
792         return show_pwm_auto_pwm_min(dev, buf, offset - 1);             \
793 }                                                                       \
794 static ssize_t set_pwm##offset##_auto_pwm_min (struct device *dev, struct device_attribute *attr,       \
795         const char *buf, size_t count)                                  \
796 {                                                                       \
797         return set_pwm_auto_pwm_min(dev, buf, count, offset - 1);       \
798 }                                                                       \
799 static ssize_t show_pwm##offset##_auto_pwm_minctl (struct device *dev, struct device_attribute *attr,   \
800         char *buf)                                                      \
801 {                                                                       \
802         return show_pwm_auto_pwm_minctl(dev, buf, offset - 1);          \
803 }                                                                       \
804 static ssize_t set_pwm##offset##_auto_pwm_minctl (struct device *dev, struct device_attribute *attr,    \
805         const char *buf, size_t count)                                  \
806 {                                                                       \
807         return set_pwm_auto_pwm_minctl(dev, buf, count, offset - 1);    \
808 }                                                                       \
809 static ssize_t show_pwm##offset##_auto_pwm_freq (struct device *dev, struct device_attribute *attr,     \
810         char *buf)                                                      \
811 {                                                                       \
812         return show_pwm_auto_pwm_freq(dev, buf, offset - 1);            \
813 }                                                                       \
814 static ssize_t set_pwm##offset##_auto_pwm_freq(struct device *dev, struct device_attribute *attr,       \
815         const char *buf, size_t count)                                  \
816 {                                                                       \
817         return set_pwm_auto_pwm_freq(dev, buf, count, offset - 1);      \
818 }                                                                       \
819 static DEVICE_ATTR(pwm##offset##_auto_channels, S_IRUGO | S_IWUSR,      \
820                 show_pwm##offset##_auto_channels,                       \
821                 set_pwm##offset##_auto_channels);                       \
822 static DEVICE_ATTR(pwm##offset##_auto_pwm_min, S_IRUGO | S_IWUSR,       \
823                 show_pwm##offset##_auto_pwm_min,                        \
824                 set_pwm##offset##_auto_pwm_min);                        \
825 static DEVICE_ATTR(pwm##offset##_auto_pwm_minctl, S_IRUGO | S_IWUSR,    \
826                 show_pwm##offset##_auto_pwm_minctl,                     \
827                 set_pwm##offset##_auto_pwm_minctl);                     \
828 static DEVICE_ATTR(pwm##offset##_auto_pwm_freq, S_IRUGO | S_IWUSR,      \
829                 show_pwm##offset##_auto_pwm_freq,                       \
830                 set_pwm##offset##_auto_pwm_freq);              
831 pwm_auto(1);
832 pwm_auto(2);
833 pwm_auto(3);
834
835 /* Temperature settings for automatic PWM control */
836
837 static ssize_t show_temp_auto_temp_off(struct device *dev, char *buf, int nr)
838 {
839         struct lm85_data *data = lm85_update_device(dev);
840         return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) -
841                 HYST_FROM_REG(data->zone[nr].hyst));
842 }
843 static ssize_t set_temp_auto_temp_off(struct device *dev, const char *buf,
844         size_t count, int nr)
845 {
846         struct i2c_client *client = to_i2c_client(dev);
847         struct lm85_data *data = i2c_get_clientdata(client);
848         int min;
849         long val = simple_strtol(buf, NULL, 10);
850
851         down(&data->update_lock);
852         min = TEMP_FROM_REG(data->zone[nr].limit);
853         data->zone[nr].off_desired = TEMP_TO_REG(val);
854         data->zone[nr].hyst = HYST_TO_REG(min - val);
855         if ( nr == 0 || nr == 1 ) {
856                 lm85_write_value(client, LM85_REG_AFAN_HYST1,
857                         (data->zone[0].hyst << 4)
858                         | data->zone[1].hyst
859                         );
860         } else {
861                 lm85_write_value(client, LM85_REG_AFAN_HYST2,
862                         (data->zone[2].hyst << 4)
863                 );
864         }
865         up(&data->update_lock);
866         return count;
867 }
868 static ssize_t show_temp_auto_temp_min(struct device *dev, char *buf, int nr)
869 {
870         struct lm85_data *data = lm85_update_device(dev);
871         return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) );
872 }
873 static ssize_t set_temp_auto_temp_min(struct device *dev, const char *buf,
874         size_t count, int nr)
875 {
876         struct i2c_client *client = to_i2c_client(dev);
877         struct lm85_data *data = i2c_get_clientdata(client);
878         long val = simple_strtol(buf, NULL, 10);
879
880         down(&data->update_lock);
881         data->zone[nr].limit = TEMP_TO_REG(val);
882         lm85_write_value(client, LM85_REG_AFAN_LIMIT(nr),
883                 data->zone[nr].limit);
884
885 /* Update temp_auto_max and temp_auto_range */
886         data->zone[nr].range = RANGE_TO_REG(
887                 TEMP_FROM_REG(data->zone[nr].max_desired) -
888                 TEMP_FROM_REG(data->zone[nr].limit));
889         lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
890                 ((data->zone[nr].range & 0x0f) << 4)
891                 | (data->autofan[nr].freq & 0x07));
892
893 /* Update temp_auto_hyst and temp_auto_off */
894         data->zone[nr].hyst = HYST_TO_REG(TEMP_FROM_REG(
895                 data->zone[nr].limit) - TEMP_FROM_REG(
896                 data->zone[nr].off_desired));
897         if ( nr == 0 || nr == 1 ) {
898                 lm85_write_value(client, LM85_REG_AFAN_HYST1,
899                         (data->zone[0].hyst << 4)
900                         | data->zone[1].hyst
901                         );
902         } else {
903                 lm85_write_value(client, LM85_REG_AFAN_HYST2,
904                         (data->zone[2].hyst << 4)
905                 );
906         }
907         up(&data->update_lock);
908         return count;
909 }
910 static ssize_t show_temp_auto_temp_max(struct device *dev, char *buf, int nr)
911 {
912         struct lm85_data *data = lm85_update_device(dev);
913         return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) +
914                 RANGE_FROM_REG(data->zone[nr].range));
915 }
916 static ssize_t set_temp_auto_temp_max(struct device *dev, const char *buf,
917         size_t count, int nr)
918 {
919         struct i2c_client *client = to_i2c_client(dev);
920         struct lm85_data *data = i2c_get_clientdata(client);
921         int min;
922         long val = simple_strtol(buf, NULL, 10);
923
924         down(&data->update_lock);
925         min = TEMP_FROM_REG(data->zone[nr].limit);
926         data->zone[nr].max_desired = TEMP_TO_REG(val);
927         data->zone[nr].range = RANGE_TO_REG(
928                 val - min);
929         lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
930                 ((data->zone[nr].range & 0x0f) << 4)
931                 | (data->autofan[nr].freq & 0x07));
932         up(&data->update_lock);
933         return count;
934 }
935 static ssize_t show_temp_auto_temp_crit(struct device *dev, char *buf, int nr)
936 {
937         struct lm85_data *data = lm85_update_device(dev);
938         return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].critical));
939 }
940 static ssize_t set_temp_auto_temp_crit(struct device *dev, const char *buf,
941                 size_t count, int nr)
942 {
943         struct i2c_client *client = to_i2c_client(dev);
944         struct lm85_data *data = i2c_get_clientdata(client);
945         long val = simple_strtol(buf, NULL, 10);
946
947         down(&data->update_lock);
948         data->zone[nr].critical = TEMP_TO_REG(val);
949         lm85_write_value(client, LM85_REG_AFAN_CRITICAL(nr),
950                 data->zone[nr].critical);
951         up(&data->update_lock);
952         return count;
953 }
954 #define temp_auto(offset)                                               \
955 static ssize_t show_temp##offset##_auto_temp_off (struct device *dev, struct device_attribute *attr,    \
956         char *buf)                                                      \
957 {                                                                       \
958         return show_temp_auto_temp_off(dev, buf, offset - 1);           \
959 }                                                                       \
960 static ssize_t set_temp##offset##_auto_temp_off (struct device *dev, struct device_attribute *attr,     \
961         const char *buf, size_t count)                                  \
962 {                                                                       \
963         return set_temp_auto_temp_off(dev, buf, count, offset - 1);     \
964 }                                                                       \
965 static ssize_t show_temp##offset##_auto_temp_min (struct device *dev, struct device_attribute *attr,    \
966         char *buf)                                                      \
967 {                                                                       \
968         return show_temp_auto_temp_min(dev, buf, offset - 1);           \
969 }                                                                       \
970 static ssize_t set_temp##offset##_auto_temp_min (struct device *dev, struct device_attribute *attr,     \
971         const char *buf, size_t count)                                  \
972 {                                                                       \
973         return set_temp_auto_temp_min(dev, buf, count, offset - 1);     \
974 }                                                                       \
975 static ssize_t show_temp##offset##_auto_temp_max (struct device *dev, struct device_attribute *attr,    \
976         char *buf)                                                      \
977 {                                                                       \
978         return show_temp_auto_temp_max(dev, buf, offset - 1);           \
979 }                                                                       \
980 static ssize_t set_temp##offset##_auto_temp_max (struct device *dev, struct device_attribute *attr,     \
981         const char *buf, size_t count)                                  \
982 {                                                                       \
983         return set_temp_auto_temp_max(dev, buf, count, offset - 1);     \
984 }                                                                       \
985 static ssize_t show_temp##offset##_auto_temp_crit (struct device *dev, struct device_attribute *attr,   \
986         char *buf)                                                      \
987 {                                                                       \
988         return show_temp_auto_temp_crit(dev, buf, offset - 1);          \
989 }                                                                       \
990 static ssize_t set_temp##offset##_auto_temp_crit (struct device *dev, struct device_attribute *attr,    \
991         const char *buf, size_t count)                                  \
992 {                                                                       \
993         return set_temp_auto_temp_crit(dev, buf, count, offset - 1);    \
994 }                                                                       \
995 static DEVICE_ATTR(temp##offset##_auto_temp_off, S_IRUGO | S_IWUSR,     \
996                 show_temp##offset##_auto_temp_off,                      \
997                 set_temp##offset##_auto_temp_off);                      \
998 static DEVICE_ATTR(temp##offset##_auto_temp_min, S_IRUGO | S_IWUSR,     \
999                 show_temp##offset##_auto_temp_min,                      \
1000                 set_temp##offset##_auto_temp_min);                      \
1001 static DEVICE_ATTR(temp##offset##_auto_temp_max, S_IRUGO | S_IWUSR,     \
1002                 show_temp##offset##_auto_temp_max,                      \
1003                 set_temp##offset##_auto_temp_max);                      \
1004 static DEVICE_ATTR(temp##offset##_auto_temp_crit, S_IRUGO | S_IWUSR,    \
1005                 show_temp##offset##_auto_temp_crit,                     \
1006                 set_temp##offset##_auto_temp_crit);
1007 temp_auto(1);
1008 temp_auto(2);
1009 temp_auto(3);
1010
1011 int lm85_attach_adapter(struct i2c_adapter *adapter)
1012 {
1013         if (!(adapter->class & I2C_CLASS_HWMON))
1014                 return 0;
1015         return i2c_probe(adapter, &addr_data, lm85_detect);
1016 }
1017
1018 int lm85_detect(struct i2c_adapter *adapter, int address,
1019                 int kind)
1020 {
1021         int company, verstep ;
1022         struct i2c_client *new_client = NULL;
1023         struct lm85_data *data;
1024         int err = 0;
1025         const char *type_name = "";
1026
1027         if (!i2c_check_functionality(adapter,
1028                                         I2C_FUNC_SMBUS_BYTE_DATA)) {
1029                 /* We need to be able to do byte I/O */
1030                 goto ERROR0 ;
1031         };
1032
1033         /* OK. For now, we presume we have a valid client. We now create the
1034            client structure, even though we cannot fill it completely yet.
1035            But it allows us to access lm85_{read,write}_value. */
1036
1037         if (!(data = kmalloc(sizeof(struct lm85_data), GFP_KERNEL))) {
1038                 err = -ENOMEM;
1039                 goto ERROR0;
1040         }
1041         memset(data, 0, sizeof(struct lm85_data));
1042
1043         new_client = &data->client;
1044         i2c_set_clientdata(new_client, data);
1045         new_client->addr = address;
1046         new_client->adapter = adapter;
1047         new_client->driver = &lm85_driver;
1048         new_client->flags = 0;
1049
1050         /* Now, we do the remaining detection. */
1051
1052         company = lm85_read_value(new_client, LM85_REG_COMPANY);
1053         verstep = lm85_read_value(new_client, LM85_REG_VERSTEP);
1054
1055         dev_dbg(&adapter->dev, "Detecting device at %d,0x%02x with"
1056                 " COMPANY: 0x%02x and VERSTEP: 0x%02x\n",
1057                 i2c_adapter_id(new_client->adapter), new_client->addr,
1058                 company, verstep);
1059
1060         /* If auto-detecting, Determine the chip type. */
1061         if (kind <= 0) {
1062                 dev_dbg(&adapter->dev, "Autodetecting device at %d,0x%02x ...\n",
1063                         i2c_adapter_id(adapter), address );
1064                 if( company == LM85_COMPANY_NATIONAL
1065                     && verstep == LM85_VERSTEP_LM85C ) {
1066                         kind = lm85c ;
1067                 } else if( company == LM85_COMPANY_NATIONAL
1068                     && verstep == LM85_VERSTEP_LM85B ) {
1069                         kind = lm85b ;
1070                 } else if( company == LM85_COMPANY_NATIONAL
1071                     && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC ) {
1072                         dev_err(&adapter->dev, "Unrecognized version/stepping 0x%02x"
1073                                 " Defaulting to LM85.\n", verstep);
1074                         kind = any_chip ;
1075                 } else if( company == LM85_COMPANY_ANALOG_DEV
1076                     && verstep == LM85_VERSTEP_ADM1027 ) {
1077                         kind = adm1027 ;
1078                 } else if( company == LM85_COMPANY_ANALOG_DEV
1079                     && (verstep == LM85_VERSTEP_ADT7463
1080                          || verstep == LM85_VERSTEP_ADT7463C) ) {
1081                         kind = adt7463 ;
1082                 } else if( company == LM85_COMPANY_ANALOG_DEV
1083                     && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC ) {
1084                         dev_err(&adapter->dev, "Unrecognized version/stepping 0x%02x"
1085                                 " Defaulting to Generic LM85.\n", verstep );
1086                         kind = any_chip ;
1087                 } else if( company == LM85_COMPANY_SMSC
1088                     && (verstep == LM85_VERSTEP_EMC6D100_A0
1089                          || verstep == LM85_VERSTEP_EMC6D100_A1) ) {
1090                         /* Unfortunately, we can't tell a '100 from a '101
1091                          * from the registers.  Since a '101 is a '100
1092                          * in a package with fewer pins and therefore no
1093                          * 3.3V, 1.5V or 1.8V inputs, perhaps if those
1094                          * inputs read 0, then it's a '101.
1095                          */
1096                         kind = emc6d100 ;
1097                 } else if( company == LM85_COMPANY_SMSC
1098                     && verstep == LM85_VERSTEP_EMC6D102) {
1099                         kind = emc6d102 ;
1100                 } else if( company == LM85_COMPANY_SMSC
1101                     && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) {
1102                         dev_err(&adapter->dev, "lm85: Detected SMSC chip\n");
1103                         dev_err(&adapter->dev, "lm85: Unrecognized version/stepping 0x%02x"
1104                             " Defaulting to Generic LM85.\n", verstep );
1105                         kind = any_chip ;
1106                 } else if( kind == any_chip
1107                     && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) {
1108                         dev_err(&adapter->dev, "Generic LM85 Version 6 detected\n");
1109                         /* Leave kind as "any_chip" */
1110                 } else {
1111                         dev_dbg(&adapter->dev, "Autodetection failed\n");
1112                         /* Not an LM85 ... */
1113                         if( kind == any_chip ) {  /* User used force=x,y */
1114                                 dev_err(&adapter->dev, "Generic LM85 Version 6 not"
1115                                         " found at %d,0x%02x. Try force_lm85c.\n",
1116                                         i2c_adapter_id(adapter), address );
1117                         }
1118                         err = 0 ;
1119                         goto ERROR1;
1120                 }
1121         }
1122
1123         /* Fill in the chip specific driver values */
1124         if ( kind == any_chip ) {
1125                 type_name = "lm85";
1126         } else if ( kind == lm85b ) {
1127                 type_name = "lm85b";
1128         } else if ( kind == lm85c ) {
1129                 type_name = "lm85c";
1130         } else if ( kind == adm1027 ) {
1131                 type_name = "adm1027";
1132         } else if ( kind == adt7463 ) {
1133                 type_name = "adt7463";
1134         } else if ( kind == emc6d100){
1135                 type_name = "emc6d100";
1136         } else if ( kind == emc6d102 ) {
1137                 type_name = "emc6d102";
1138         }
1139         strlcpy(new_client->name, type_name, I2C_NAME_SIZE);
1140
1141         /* Fill in the remaining client fields */
1142         data->type = kind;
1143         data->valid = 0;
1144         init_MUTEX(&data->update_lock);
1145
1146         /* Tell the I2C layer a new client has arrived */
1147         if ((err = i2c_attach_client(new_client)))
1148                 goto ERROR1;
1149
1150         /* Set the VRM version */
1151         data->vrm = i2c_which_vrm();
1152
1153         /* Initialize the LM85 chip */
1154         lm85_init_client(new_client);
1155
1156         /* Register sysfs hooks */
1157         data->class_dev = hwmon_device_register(&new_client->dev);
1158         if (IS_ERR(data->class_dev)) {
1159                 err = PTR_ERR(data->class_dev);
1160                 goto ERROR2;
1161         }
1162
1163         device_create_file(&new_client->dev, &dev_attr_fan1_input);
1164         device_create_file(&new_client->dev, &dev_attr_fan2_input);
1165         device_create_file(&new_client->dev, &dev_attr_fan3_input);
1166         device_create_file(&new_client->dev, &dev_attr_fan4_input);
1167         device_create_file(&new_client->dev, &dev_attr_fan1_min);
1168         device_create_file(&new_client->dev, &dev_attr_fan2_min);
1169         device_create_file(&new_client->dev, &dev_attr_fan3_min);
1170         device_create_file(&new_client->dev, &dev_attr_fan4_min);
1171         device_create_file(&new_client->dev, &dev_attr_pwm1);
1172         device_create_file(&new_client->dev, &dev_attr_pwm2);
1173         device_create_file(&new_client->dev, &dev_attr_pwm3);
1174         device_create_file(&new_client->dev, &dev_attr_pwm1_enable);
1175         device_create_file(&new_client->dev, &dev_attr_pwm2_enable);
1176         device_create_file(&new_client->dev, &dev_attr_pwm3_enable);
1177         device_create_file(&new_client->dev, &dev_attr_in0_input);
1178         device_create_file(&new_client->dev, &dev_attr_in1_input);
1179         device_create_file(&new_client->dev, &dev_attr_in2_input);
1180         device_create_file(&new_client->dev, &dev_attr_in3_input);
1181         device_create_file(&new_client->dev, &dev_attr_in4_input);
1182         device_create_file(&new_client->dev, &dev_attr_in0_min);
1183         device_create_file(&new_client->dev, &dev_attr_in1_min);
1184         device_create_file(&new_client->dev, &dev_attr_in2_min);
1185         device_create_file(&new_client->dev, &dev_attr_in3_min);
1186         device_create_file(&new_client->dev, &dev_attr_in4_min);
1187         device_create_file(&new_client->dev, &dev_attr_in0_max);
1188         device_create_file(&new_client->dev, &dev_attr_in1_max);
1189         device_create_file(&new_client->dev, &dev_attr_in2_max);
1190         device_create_file(&new_client->dev, &dev_attr_in3_max);
1191         device_create_file(&new_client->dev, &dev_attr_in4_max);
1192         device_create_file(&new_client->dev, &dev_attr_temp1_input);
1193         device_create_file(&new_client->dev, &dev_attr_temp2_input);
1194         device_create_file(&new_client->dev, &dev_attr_temp3_input);
1195         device_create_file(&new_client->dev, &dev_attr_temp1_min);
1196         device_create_file(&new_client->dev, &dev_attr_temp2_min);
1197         device_create_file(&new_client->dev, &dev_attr_temp3_min);
1198         device_create_file(&new_client->dev, &dev_attr_temp1_max);
1199         device_create_file(&new_client->dev, &dev_attr_temp2_max);
1200         device_create_file(&new_client->dev, &dev_attr_temp3_max);
1201         device_create_file(&new_client->dev, &dev_attr_vrm);
1202         device_create_file(&new_client->dev, &dev_attr_cpu0_vid);
1203         device_create_file(&new_client->dev, &dev_attr_alarms);
1204         device_create_file(&new_client->dev, &dev_attr_pwm1_auto_channels);
1205         device_create_file(&new_client->dev, &dev_attr_pwm2_auto_channels);
1206         device_create_file(&new_client->dev, &dev_attr_pwm3_auto_channels);
1207         device_create_file(&new_client->dev, &dev_attr_pwm1_auto_pwm_min);
1208         device_create_file(&new_client->dev, &dev_attr_pwm2_auto_pwm_min);
1209         device_create_file(&new_client->dev, &dev_attr_pwm3_auto_pwm_min);
1210         device_create_file(&new_client->dev, &dev_attr_pwm1_auto_pwm_minctl);
1211         device_create_file(&new_client->dev, &dev_attr_pwm2_auto_pwm_minctl);
1212         device_create_file(&new_client->dev, &dev_attr_pwm3_auto_pwm_minctl);
1213         device_create_file(&new_client->dev, &dev_attr_pwm1_auto_pwm_freq);
1214         device_create_file(&new_client->dev, &dev_attr_pwm2_auto_pwm_freq);
1215         device_create_file(&new_client->dev, &dev_attr_pwm3_auto_pwm_freq);
1216         device_create_file(&new_client->dev, &dev_attr_temp1_auto_temp_off);
1217         device_create_file(&new_client->dev, &dev_attr_temp2_auto_temp_off);
1218         device_create_file(&new_client->dev, &dev_attr_temp3_auto_temp_off);
1219         device_create_file(&new_client->dev, &dev_attr_temp1_auto_temp_min);
1220         device_create_file(&new_client->dev, &dev_attr_temp2_auto_temp_min);
1221         device_create_file(&new_client->dev, &dev_attr_temp3_auto_temp_min);
1222         device_create_file(&new_client->dev, &dev_attr_temp1_auto_temp_max);
1223         device_create_file(&new_client->dev, &dev_attr_temp2_auto_temp_max);
1224         device_create_file(&new_client->dev, &dev_attr_temp3_auto_temp_max);
1225         device_create_file(&new_client->dev, &dev_attr_temp1_auto_temp_crit);
1226         device_create_file(&new_client->dev, &dev_attr_temp2_auto_temp_crit);
1227         device_create_file(&new_client->dev, &dev_attr_temp3_auto_temp_crit);
1228
1229         return 0;
1230
1231         /* Error out and cleanup code */
1232     ERROR2:
1233         i2c_detach_client(new_client);
1234     ERROR1:
1235         kfree(data);
1236     ERROR0:
1237         return err;
1238 }
1239
1240 int lm85_detach_client(struct i2c_client *client)
1241 {
1242         struct lm85_data *data = i2c_get_clientdata(client);
1243         hwmon_device_unregister(data->class_dev);
1244         i2c_detach_client(client);
1245         kfree(data);
1246         return 0;
1247 }
1248
1249
1250 int lm85_read_value(struct i2c_client *client, u8 reg)
1251 {
1252         int res;
1253
1254         /* What size location is it? */
1255         switch( reg ) {
1256         case LM85_REG_FAN(0) :  /* Read WORD data */
1257         case LM85_REG_FAN(1) :
1258         case LM85_REG_FAN(2) :
1259         case LM85_REG_FAN(3) :
1260         case LM85_REG_FAN_MIN(0) :
1261         case LM85_REG_FAN_MIN(1) :
1262         case LM85_REG_FAN_MIN(2) :
1263         case LM85_REG_FAN_MIN(3) :
1264         case LM85_REG_ALARM1 :  /* Read both bytes at once */
1265                 res = i2c_smbus_read_byte_data(client, reg) & 0xff ;
1266                 res |= i2c_smbus_read_byte_data(client, reg+1) << 8 ;
1267                 break ;
1268         case ADT7463_REG_TMIN_CTL1 :  /* Read WORD MSB, LSB */
1269                 res = i2c_smbus_read_byte_data(client, reg) << 8 ;
1270                 res |= i2c_smbus_read_byte_data(client, reg+1) & 0xff ;
1271                 break ;
1272         default:        /* Read BYTE data */
1273                 res = i2c_smbus_read_byte_data(client, reg);
1274                 break ;
1275         }
1276
1277         return res ;
1278 }
1279
1280 int lm85_write_value(struct i2c_client *client, u8 reg, int value)
1281 {
1282         int res ;
1283
1284         switch( reg ) {
1285         case LM85_REG_FAN(0) :  /* Write WORD data */
1286         case LM85_REG_FAN(1) :
1287         case LM85_REG_FAN(2) :
1288         case LM85_REG_FAN(3) :
1289         case LM85_REG_FAN_MIN(0) :
1290         case LM85_REG_FAN_MIN(1) :
1291         case LM85_REG_FAN_MIN(2) :
1292         case LM85_REG_FAN_MIN(3) :
1293         /* NOTE: ALARM is read only, so not included here */
1294                 res = i2c_smbus_write_byte_data(client, reg, value & 0xff) ;
1295                 res |= i2c_smbus_write_byte_data(client, reg+1, (value>>8) & 0xff) ;
1296                 break ;
1297         case ADT7463_REG_TMIN_CTL1 :  /* Write WORD MSB, LSB */
1298                 res = i2c_smbus_write_byte_data(client, reg, (value>>8) & 0xff);
1299                 res |= i2c_smbus_write_byte_data(client, reg+1, value & 0xff) ;
1300                 break ;
1301         default:        /* Write BYTE data */
1302                 res = i2c_smbus_write_byte_data(client, reg, value);
1303                 break ;
1304         }
1305
1306         return res ;
1307 }
1308
1309 void lm85_init_client(struct i2c_client *client)
1310 {
1311         int value;
1312         struct lm85_data *data = i2c_get_clientdata(client);
1313
1314         dev_dbg(&client->dev, "Initializing device\n");
1315
1316         /* Warn if part was not "READY" */
1317         value = lm85_read_value(client, LM85_REG_CONFIG);
1318         dev_dbg(&client->dev, "LM85_REG_CONFIG is: 0x%02x\n", value);
1319         if( value & 0x02 ) {
1320                 dev_err(&client->dev, "Client (%d,0x%02x) config is locked.\n",
1321                             i2c_adapter_id(client->adapter), client->addr );
1322         };
1323         if( ! (value & 0x04) ) {
1324                 dev_err(&client->dev, "Client (%d,0x%02x) is not ready.\n",
1325                             i2c_adapter_id(client->adapter), client->addr );
1326         };
1327         if( value & 0x10
1328             && ( data->type == adm1027
1329                 || data->type == adt7463 ) ) {
1330                 dev_err(&client->dev, "Client (%d,0x%02x) VxI mode is set.  "
1331                         "Please report this to the lm85 maintainer.\n",
1332                             i2c_adapter_id(client->adapter), client->addr );
1333         };
1334
1335         /* WE INTENTIONALLY make no changes to the limits,
1336          *   offsets, pwms, fans and zones.  If they were
1337          *   configured, we don't want to mess with them.
1338          *   If they weren't, the default is 100% PWM, no
1339          *   control and will suffice until 'sensors -s'
1340          *   can be run by the user.
1341          */
1342
1343         /* Start monitoring */
1344         value = lm85_read_value(client, LM85_REG_CONFIG);
1345         /* Try to clear LOCK, Set START, save everything else */
1346         value = (value & ~ 0x02) | 0x01 ;
1347         dev_dbg(&client->dev, "Setting CONFIG to: 0x%02x\n", value);
1348         lm85_write_value(client, LM85_REG_CONFIG, value);
1349 }
1350
1351 static struct lm85_data *lm85_update_device(struct device *dev)
1352 {
1353         struct i2c_client *client = to_i2c_client(dev);
1354         struct lm85_data *data = i2c_get_clientdata(client);
1355         int i;
1356
1357         down(&data->update_lock);
1358
1359         if ( !data->valid ||
1360              time_after(jiffies, data->last_reading + LM85_DATA_INTERVAL) ) {
1361                 /* Things that change quickly */
1362                 dev_dbg(&client->dev, "Reading sensor values\n");
1363                 
1364                 /* Have to read extended bits first to "freeze" the
1365                  * more significant bits that are read later.
1366                  */
1367                 if ( (data->type == adm1027) || (data->type == adt7463) ) {
1368                         int ext1 = lm85_read_value(client,
1369                                                    ADM1027_REG_EXTEND_ADC1);
1370                         int ext2 =  lm85_read_value(client,
1371                                                     ADM1027_REG_EXTEND_ADC2);
1372                         int val = (ext1 << 8) + ext2;
1373
1374                         for(i = 0; i <= 4; i++)
1375                                 data->in_ext[i] = (val>>(i * 2))&0x03;
1376
1377                         for(i = 0; i <= 2; i++)
1378                                 data->temp_ext[i] = (val>>((i + 5) * 2))&0x03;
1379                 }
1380
1381                 /* adc_scale is 2^(number of LSBs). There are 4 extra bits in
1382                    the emc6d102 and 2 in the adt7463 and adm1027. In all
1383                    other chips ext is always 0 and the value of scale is
1384                    irrelevant. So it is left in 4*/
1385                 data->adc_scale = (data->type == emc6d102 ) ? 16 : 4;
1386
1387                 for (i = 0; i <= 4; ++i) {
1388                         data->in[i] =
1389                             lm85_read_value(client, LM85_REG_IN(i));
1390                 }
1391
1392                 for (i = 0; i <= 3; ++i) {
1393                         data->fan[i] =
1394                             lm85_read_value(client, LM85_REG_FAN(i));
1395                 }
1396
1397                 for (i = 0; i <= 2; ++i) {
1398                         data->temp[i] =
1399                             lm85_read_value(client, LM85_REG_TEMP(i));
1400                 }
1401
1402                 for (i = 0; i <= 2; ++i) {
1403                         data->pwm[i] =
1404                             lm85_read_value(client, LM85_REG_PWM(i));
1405                 }
1406
1407                 data->alarms = lm85_read_value(client, LM85_REG_ALARM1);
1408
1409                 if ( data->type == adt7463 ) {
1410                         if( data->therm_total < ULONG_MAX - 256 ) {
1411                             data->therm_total +=
1412                                 lm85_read_value(client, ADT7463_REG_THERM );
1413                         }
1414                 } else if ( data->type == emc6d100 ) {
1415                         /* Three more voltage sensors */
1416                         for (i = 5; i <= 7; ++i) {
1417                                 data->in[i] =
1418                                         lm85_read_value(client, EMC6D100_REG_IN(i));
1419                         }
1420                         /* More alarm bits */
1421                         data->alarms |=
1422                                 lm85_read_value(client, EMC6D100_REG_ALARM3) << 16;
1423                 } else if (data->type == emc6d102 ) {
1424                         /* Have to read LSB bits after the MSB ones because
1425                            the reading of the MSB bits has frozen the
1426                            LSBs (backward from the ADM1027).
1427                          */
1428                         int ext1 = lm85_read_value(client,
1429                                                    EMC6D102_REG_EXTEND_ADC1);
1430                         int ext2 = lm85_read_value(client,
1431                                                    EMC6D102_REG_EXTEND_ADC2);
1432                         int ext3 = lm85_read_value(client,
1433                                                    EMC6D102_REG_EXTEND_ADC3);
1434                         int ext4 = lm85_read_value(client,
1435                                                    EMC6D102_REG_EXTEND_ADC4);
1436                         data->in_ext[0] = ext3 & 0x0f;
1437                         data->in_ext[1] = ext4 & 0x0f;
1438                         data->in_ext[2] = (ext4 >> 4) & 0x0f;
1439                         data->in_ext[3] = (ext3 >> 4) & 0x0f;
1440                         data->in_ext[4] = (ext2 >> 4) & 0x0f;
1441
1442                         data->temp_ext[0] = ext1 & 0x0f;
1443                         data->temp_ext[1] = ext2 & 0x0f;
1444                         data->temp_ext[2] = (ext1 >> 4) & 0x0f;
1445                 }
1446
1447                 data->last_reading = jiffies ;
1448         };  /* last_reading */
1449
1450         if ( !data->valid ||
1451              time_after(jiffies, data->last_config + LM85_CONFIG_INTERVAL) ) {
1452                 /* Things that don't change often */
1453                 dev_dbg(&client->dev, "Reading config values\n");
1454
1455                 for (i = 0; i <= 4; ++i) {
1456                         data->in_min[i] =
1457                             lm85_read_value(client, LM85_REG_IN_MIN(i));
1458                         data->in_max[i] =
1459                             lm85_read_value(client, LM85_REG_IN_MAX(i));
1460                 }
1461
1462                 if ( data->type == emc6d100 ) {
1463                         for (i = 5; i <= 7; ++i) {
1464                                 data->in_min[i] =
1465                                         lm85_read_value(client, EMC6D100_REG_IN_MIN(i));
1466                                 data->in_max[i] =
1467                                         lm85_read_value(client, EMC6D100_REG_IN_MAX(i));
1468                         }
1469                 }
1470
1471                 for (i = 0; i <= 3; ++i) {
1472                         data->fan_min[i] =
1473                             lm85_read_value(client, LM85_REG_FAN_MIN(i));
1474                 }
1475
1476                 for (i = 0; i <= 2; ++i) {
1477                         data->temp_min[i] =
1478                             lm85_read_value(client, LM85_REG_TEMP_MIN(i));
1479                         data->temp_max[i] =
1480                             lm85_read_value(client, LM85_REG_TEMP_MAX(i));
1481                 }
1482
1483                 data->vid = lm85_read_value(client, LM85_REG_VID);
1484
1485                 for (i = 0; i <= 2; ++i) {
1486                         int val ;
1487                         data->autofan[i].config =
1488                             lm85_read_value(client, LM85_REG_AFAN_CONFIG(i));
1489                         val = lm85_read_value(client, LM85_REG_AFAN_RANGE(i));
1490                         data->autofan[i].freq = val & 0x07 ;
1491                         data->zone[i].range = (val >> 4) & 0x0f ;
1492                         data->autofan[i].min_pwm =
1493                             lm85_read_value(client, LM85_REG_AFAN_MINPWM(i));
1494                         data->zone[i].limit =
1495                             lm85_read_value(client, LM85_REG_AFAN_LIMIT(i));
1496                         data->zone[i].critical =
1497                             lm85_read_value(client, LM85_REG_AFAN_CRITICAL(i));
1498                 }
1499
1500                 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE1);
1501                 data->smooth[0] = i & 0x0f ;
1502                 data->syncpwm3 = i & 0x10 ;  /* Save PWM3 config */
1503                 data->autofan[0].min_off = (i & 0x20) != 0 ;
1504                 data->autofan[1].min_off = (i & 0x40) != 0 ;
1505                 data->autofan[2].min_off = (i & 0x80) != 0 ;
1506                 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE2);
1507                 data->smooth[1] = (i>>4) & 0x0f ;
1508                 data->smooth[2] = i & 0x0f ;
1509
1510                 i = lm85_read_value(client, LM85_REG_AFAN_HYST1);
1511                 data->zone[0].hyst = (i>>4) & 0x0f ;
1512                 data->zone[1].hyst = i & 0x0f ;
1513
1514                 i = lm85_read_value(client, LM85_REG_AFAN_HYST2);
1515                 data->zone[2].hyst = (i>>4) & 0x0f ;
1516
1517                 if ( (data->type == lm85b) || (data->type == lm85c) ) {
1518                         data->tach_mode = lm85_read_value(client,
1519                                 LM85_REG_TACH_MODE );
1520                         data->spinup_ctl = lm85_read_value(client,
1521                                 LM85_REG_SPINUP_CTL );
1522                 } else if ( (data->type == adt7463) || (data->type == adm1027) ) {
1523                         if ( data->type == adt7463 ) {
1524                                 for (i = 0; i <= 2; ++i) {
1525                                     data->oppoint[i] = lm85_read_value(client,
1526                                         ADT7463_REG_OPPOINT(i) );
1527                                 }
1528                                 data->tmin_ctl = lm85_read_value(client,
1529                                         ADT7463_REG_TMIN_CTL1 );
1530                                 data->therm_limit = lm85_read_value(client,
1531                                         ADT7463_REG_THERM_LIMIT );
1532                         }
1533                         for (i = 0; i <= 2; ++i) {
1534                             data->temp_offset[i] = lm85_read_value(client,
1535                                 ADM1027_REG_TEMP_OFFSET(i) );
1536                         }
1537                         data->tach_mode = lm85_read_value(client,
1538                                 ADM1027_REG_CONFIG3 );
1539                         data->fan_ppr = lm85_read_value(client,
1540                                 ADM1027_REG_FAN_PPR );
1541                 }
1542         
1543                 data->last_config = jiffies;
1544         };  /* last_config */
1545
1546         data->valid = 1;
1547
1548         up(&data->update_lock);
1549
1550         return data;
1551 }
1552
1553
1554 static int __init sm_lm85_init(void)
1555 {
1556         return i2c_add_driver(&lm85_driver);
1557 }
1558
1559 static void  __exit sm_lm85_exit(void)
1560 {
1561         i2c_del_driver(&lm85_driver);
1562 }
1563
1564 /* Thanks to Richard Barrington for adding the LM85 to sensors-detect.
1565  * Thanks to Margit Schubert-While <margitsw@t-online.de> for help with
1566  *     post 2.7.0 CVS changes.
1567  */
1568 MODULE_LICENSE("GPL");
1569 MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, Margit Schubert-While <margitsw@t-online.de>, Justin Thiessen <jthiessen@penguincomputing.com");
1570 MODULE_DESCRIPTION("LM85-B, LM85-C driver");
1571
1572 module_init(sm_lm85_init);
1573 module_exit(sm_lm85_exit);