drivers/i2c/chips/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/config.h>
  27 #include <linux/module.h>
  28 #include <linux/init.h>
  29 #include <linux/slab.h>
  30 #include <linux/jiffies.h>
  31 #include <linux/i2c.h>
  32 #include <linux/i2c-sensor.h>
  33 #include <linux/i2c-vid.h>
  34
  35 /* Addresses to scan */
  36 static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
  37 static unsigned int normal_isa[] = { I2C_CLIENT_ISA_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 /* i2c-vid.h defines vid_from_reg() */
 286 #define VID_FROM_REG(val,vrm) (vid_from_reg((val),(vrm)))
 287
 288 #define ALARMS_FROM_REG(val) (val)
 289
 290 /* Unlike some other drivers we DO NOT set initial limits.  Use
 291  * the config file to set limits.  Some users have reported
 292  * motherboards shutting down when we set limits in a previous
 293  * version of the driver.
 294  */
 295
 296 /* Chip sampling rates
 297  *
 298  * Some sensors are not updated more frequently than once per second
 299  *    so it doesn't make sense to read them more often than that.
 300  *    We cache the results and return the saved data if the driver
 301  *    is called again before a second has elapsed.
 302  *
 303  * Also, there is significant configuration data for this chip
 304  *    given the automatic PWM fan control that is possible.  There
 305  *    are about 47 bytes of config data to only 22 bytes of actual
 306  *    readings.  So, we keep the config data up to date in the cache
 307  *    when it is written and only sample it once every 1 *minute*
 308  */
 309 #define LM85_DATA_INTERVAL  (HZ + HZ / 2)
 310 #define LM85_CONFIG_INTERVAL  (1 * 60 * HZ)
 311
 312 /* For each registered LM85, we need to keep some data in memory. That
 313    data is pointed to by lm85_list[NR]->data. The structure itself is
 314    dynamically allocated, at the same time when a new lm85 client is
 315    allocated. */
 316
 317 /* LM85 can automatically adjust fan speeds based on temperature
 318  * This structure encapsulates an entire Zone config.  There are
 319  * three zones (one for each temperature input) on the lm85
 320  */
 321 struct lm85_zone {
 322         s8 limit;       /* Low temp limit */
 323         u8 hyst;        /* Low limit hysteresis. (0-15) */
 324         u8 range;       /* Temp range, encoded */
 325         s8 critical;    /* "All fans ON" temp limit */
 326         u8 off_desired; /* Actual "off" temperature specified.  Preserved
 327                          * to prevent "drift" as other autofan control
 328                          * values change.
 329                          */
 330         u8 max_desired; /* Actual "max" temperature specified.  Preserved
 331                          * to prevent "drift" as other autofan control
 332                          * values change.
 333                          */
 334 };
 335
 336 struct lm85_autofan {
 337         u8 config;      /* Register value */
 338         u8 freq;        /* PWM frequency, encoded */
 339         u8 min_pwm;     /* Minimum PWM value, encoded */
 340         u8 min_off;     /* Min PWM or OFF below "limit", flag */
 341 };
 342
 343 struct lm85_data {
 344         struct i2c_client client;
 345         struct semaphore lock;
 346         enum chips type;
 347
 348         struct semaphore update_lock;
 349         int valid;              /* !=0 if following fields are valid */
 350         unsigned long last_reading;     /* In jiffies */
 351         unsigned long last_config;      /* In jiffies */
 352
 353         u8 in[8];               /* Register value */
 354         u8 in_max[8];           /* Register value */
 355         u8 in_min[8];           /* Register value */
 356         s8 temp[3];             /* Register value */
 357         s8 temp_min[3];         /* Register value */
 358         s8 temp_max[3];         /* Register value */
 359         s8 temp_offset[3];      /* Register value */
 360         u16 fan[4];             /* Register value */
 361         u16 fan_min[4];         /* Register value */
 362         u8 pwm[3];              /* Register value */
 363         u8 spinup_ctl;          /* Register encoding, combined */
 364         u8 tach_mode;           /* Register encoding, combined */
 365         u8 temp_ext[3];         /* Decoded values */
 366         u8 in_ext[8];           /* Decoded values */
 367         u8 adc_scale;           /* ADC Extended bits scaling factor */
 368         u8 fan_ppr;             /* Register value */
 369         u8 smooth[3];           /* Register encoding */
 370         u8 vid;                 /* Register value */
 371         u8 vrm;                 /* VRM version */
 372         u8 syncpwm3;            /* Saved PWM3 for TACH 2,3,4 config */
 373         u8 oppoint[3];          /* Register value */
 374         u16 tmin_ctl;           /* Register value */
 375         unsigned long therm_total; /* Cummulative therm count */
 376         u8 therm_limit;         /* Register value */
 377         u32 alarms;             /* Register encoding, combined */
 378         struct lm85_autofan autofan[3];
 379         struct lm85_zone zone[3];
 380 };
 381
 382 static int lm85_attach_adapter(struct i2c_adapter *adapter);
 383 static int lm85_detect(struct i2c_adapter *adapter, int address,
 384                         int kind);
 385 static int lm85_detach_client(struct i2c_client *client);
 386
 387 static int lm85_read_value(struct i2c_client *client, u8 register);
 388 static int lm85_write_value(struct i2c_client *client, u8 register, int value);
 389 static struct lm85_data *lm85_update_device(struct device *dev);
 390 static void lm85_init_client(struct i2c_client *client);
 391
 392
 393 static struct i2c_driver lm85_driver = {
 394         .owner          = THIS_MODULE,
 395         .name           = "lm85",
 396         .id             = I2C_DRIVERID_LM85,
 397         .flags          = I2C_DF_NOTIFY,
 398         .attach_adapter = lm85_attach_adapter,
 399         .detach_client  = lm85_detach_client,
 400 };
 401
 402
 403 /* 4 Fans */
 404 static ssize_t show_fan(struct device *dev, char *buf, int nr)
 405 {
 406         struct lm85_data *data = lm85_update_device(dev);
 407         return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan[nr]) );
 408 }
 409 static ssize_t show_fan_min(struct device *dev, char *buf, int nr)
 410 {
 411         struct lm85_data *data = lm85_update_device(dev);
 412         return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan_min[nr]) );
 413 }
 414 static ssize_t set_fan_min(struct device *dev, const char *buf,
 415                 size_t count, int nr)
 416 {
 417         struct i2c_client *client = to_i2c_client(dev);
 418         struct lm85_data *data = i2c_get_clientdata(client);
 419         long val = simple_strtol(buf, NULL, 10);
 420
 421         down(&data->update_lock);
 422         data->fan_min[nr] = FAN_TO_REG(val);
 423         lm85_write_value(client, LM85_REG_FAN_MIN(nr), data->fan_min[nr]);
 424         up(&data->update_lock);
 425         return count;
 426 }
 427
 428 #define show_fan_offset(offset)                                         \
 429 static ssize_t show_fan_##offset (struct device *dev, char *buf)        \
 430 {                                                                       \
 431         return show_fan(dev, buf, offset - 1);                          \
 432 }                                                                       \
 433 static ssize_t show_fan_##offset##_min (struct device *dev, char *buf)  \
 434 {                                                                       \
 435         return show_fan_min(dev, buf, offset - 1);                      \
 436 }                                                                       \
 437 static ssize_t set_fan_##offset##_min (struct device *dev,              \
 438         const char *buf, size_t count)                                  \
 439 {                                                                       \
 440         return set_fan_min(dev, buf, count, offset - 1);                \
 441 }                                                                       \
 442 static DEVICE_ATTR(fan##offset##_input, S_IRUGO, show_fan_##offset,     \
 443                 NULL);                                                  \
 444 static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR,                \
 445                 show_fan_##offset##_min, set_fan_##offset##_min);
 446
 447 show_fan_offset(1);
 448 show_fan_offset(2);
 449 show_fan_offset(3);
 450 show_fan_offset(4);
 451
 452 /* vid, vrm, alarms */
 453
 454 static ssize_t show_vid_reg(struct device *dev, char *buf)
 455 {
 456         struct lm85_data *data = lm85_update_device(dev);
 457         return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm));
 458 }
 459
 460 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
 461
 462 static ssize_t show_vrm_reg(struct device *dev, char *buf)
 463 {
 464         struct lm85_data *data = lm85_update_device(dev);
 465         return sprintf(buf, "%ld\n", (long) data->vrm);
 466 }
 467
 468 static ssize_t store_vrm_reg(struct device *dev, const char *buf, size_t count)
 469 {
 470         struct i2c_client *client = to_i2c_client(dev);
 471         struct lm85_data *data = i2c_get_clientdata(client);
 472         u32 val;
 473
 474         val = simple_strtoul(buf, NULL, 10);
 475         data->vrm = val;
 476         return count;
 477 }
 478
 479 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
 480
 481 static ssize_t show_alarms_reg(struct device *dev, char *buf)
 482 {
 483         struct lm85_data *data = lm85_update_device(dev);
 484         return sprintf(buf, "%ld\n", (long) ALARMS_FROM_REG(data->alarms));
 485 }
 486
 487 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
 488
 489 /* pwm */
 490
 491 static ssize_t show_pwm(struct device *dev, char *buf, int nr)
 492 {
 493         struct lm85_data *data = lm85_update_device(dev);
 494         return sprintf(buf,"%d\n", PWM_FROM_REG(data->pwm[nr]) );
 495 }
 496 static ssize_t set_pwm(struct device *dev, const char *buf,
 497                 size_t count, int nr)
 498 {
 499         struct i2c_client *client = to_i2c_client(dev);
 500         struct lm85_data *data = i2c_get_clientdata(client);
 501         long val = simple_strtol(buf, NULL, 10);
 502
 503         down(&data->update_lock);
 504         data->pwm[nr] = PWM_TO_REG(val);
 505         lm85_write_value(client, LM85_REG_PWM(nr), data->pwm[nr]);
 506         up(&data->update_lock);
 507         return count;
 508 }
 509 static ssize_t show_pwm_enable(struct device *dev, char *buf, int nr)
 510 {
 511         struct lm85_data *data = lm85_update_device(dev);
 512         int     pwm_zone;
 513
 514         pwm_zone = ZONE_FROM_REG(data->autofan[nr].config);
 515         return sprintf(buf,"%d\n", (pwm_zone != 0 && pwm_zone != -1) );
 516 }
 517
 518 #define show_pwm_reg(offset)                                            \
 519 static ssize_t show_pwm_##offset (struct device *dev, char *buf)        \
 520 {                                                                       \
 521         return show_pwm(dev, buf, offset - 1);                          \
 522 }                                                                       \
 523 static ssize_t set_pwm_##offset (struct device *dev,                    \
 524                                  const char *buf, size_t count)         \
 525 {                                                                       \
 526         return set_pwm(dev, buf, count, offset - 1);                    \
 527 }                                                                       \
 528 static ssize_t show_pwm_enable##offset (struct device *dev, char *buf)  \
 529 {                                                                       \
 530         return show_pwm_enable(dev, buf, offset - 1);                   \
 531 }                                                                       \
 532 static DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR,                      \
 533                 show_pwm_##offset, set_pwm_##offset);                   \
 534 static DEVICE_ATTR(pwm##offset##_enable, S_IRUGO,                       \
 535                 show_pwm_enable##offset, NULL);
 536
 537 show_pwm_reg(1);
 538 show_pwm_reg(2);
 539 show_pwm_reg(3);
 540
 541 /* Voltages */
 542
 543 static ssize_t show_in(struct device *dev, char *buf, int nr)
 544 {
 545         struct lm85_data *data = lm85_update_device(dev);
 546         return sprintf( buf, "%d\n", INSEXT_FROM_REG(nr,
 547                                                      data->in[nr],
 548                                                      data->in_ext[nr],
 549                                                      data->adc_scale) );
 550 }
 551 static ssize_t show_in_min(struct device *dev, char *buf, int nr)
 552 {
 553         struct lm85_data *data = lm85_update_device(dev);
 554         return sprintf(buf,"%d\n", INS_FROM_REG(nr, data->in_min[nr]) );
 555 }
 556 static ssize_t set_in_min(struct device *dev, const char *buf,
 557                 size_t count, int nr)
 558 {
 559         struct i2c_client *client = to_i2c_client(dev);
 560         struct lm85_data *data = i2c_get_clientdata(client);
 561         long val = simple_strtol(buf, NULL, 10);
 562
 563         down(&data->update_lock);
 564         data->in_min[nr] = INS_TO_REG(nr, val);
 565         lm85_write_value(client, LM85_REG_IN_MIN(nr), data->in_min[nr]);
 566         up(&data->update_lock);
 567         return count;
 568 }
 569 static ssize_t show_in_max(struct device *dev, char *buf, int nr)
 570 {
 571         struct lm85_data *data = lm85_update_device(dev);
 572         return sprintf(buf,"%d\n", INS_FROM_REG(nr, data->in_max[nr]) );
 573 }
 574 static ssize_t set_in_max(struct device *dev, const char *buf,
 575                 size_t count, int nr)
 576 {
 577         struct i2c_client *client = to_i2c_client(dev);
 578         struct lm85_data *data = i2c_get_clientdata(client);
 579         long val = simple_strtol(buf, NULL, 10);
 580
 581         down(&data->update_lock);
 582         data->in_max[nr] = INS_TO_REG(nr, val);
 583         lm85_write_value(client, LM85_REG_IN_MAX(nr), data->in_max[nr]);
 584         up(&data->update_lock);
 585         return count;
 586 }
 587 #define show_in_reg(offset)                                             \
 588 static ssize_t show_in_##offset (struct device *dev, char *buf)         \
 589 {                                                                       \
 590         return show_in(dev, buf, offset);                               \
 591 }                                                                       \
 592 static ssize_t show_in_##offset##_min (struct device *dev, char *buf)   \
 593 {                                                                       \
 594         return show_in_min(dev, buf, offset);                           \
 595 }                                                                       \
 596 static ssize_t show_in_##offset##_max (struct device *dev, char *buf)   \
 597 {                                                                       \
 598         return show_in_max(dev, buf, offset);                           \
 599 }                                                                       \
 600 static ssize_t set_in_##offset##_min (struct device *dev,               \
 601         const char *buf, size_t count)                                  \
 602 {                                                                       \
 603         return set_in_min(dev, buf, count, offset);                     \
 604 }                                                                       \
 605 static ssize_t set_in_##offset##_max (struct device *dev,               \
 606         const char *buf, size_t count)                                  \
 607 {                                                                       \
 608         return set_in_max(dev, buf, count, offset);                     \
 609 }                                                                       \
 610 static DEVICE_ATTR(in##offset##_input, S_IRUGO, show_in_##offset,       \
 611                 NULL);                                                  \
 612 static DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR,                 \
 613                 show_in_##offset##_min, set_in_##offset##_min);         \
 614 static DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR,                 \
 615                 show_in_##offset##_max, set_in_##offset##_max);
 616
 617 show_in_reg(0);
 618 show_in_reg(1);
 619 show_in_reg(2);
 620 show_in_reg(3);
 621 show_in_reg(4);
 622
 623 /* Temps */
 624
 625 static ssize_t show_temp(struct device *dev, char *buf, int nr)
 626 {
 627         struct lm85_data *data = lm85_update_device(dev);
 628         return sprintf(buf,"%d\n", TEMPEXT_FROM_REG(data->temp[nr],
 629                                                     data->temp_ext[nr],
 630                                                     data->adc_scale) );
 631 }
 632 static ssize_t show_temp_min(struct device *dev, char *buf, int nr)
 633 {
 634         struct lm85_data *data = lm85_update_device(dev);
 635         return sprintf(buf,"%d\n", TEMP_FROM_REG(data->temp_min[nr]) );
 636 }
 637 static ssize_t set_temp_min(struct device *dev, const char *buf,
 638                 size_t count, int nr)
 639 {
 640         struct i2c_client *client = to_i2c_client(dev);
 641         struct lm85_data *data = i2c_get_clientdata(client);
 642         long val = simple_strtol(buf, NULL, 10);
 643
 644         down(&data->update_lock);
 645         data->temp_min[nr] = TEMP_TO_REG(val);
 646         lm85_write_value(client, LM85_REG_TEMP_MIN(nr), data->temp_min[nr]);
 647         up(&data->update_lock);
 648         return count;
 649 }
 650 static ssize_t show_temp_max(struct device *dev, char *buf, int nr)
 651 {
 652         struct lm85_data *data = lm85_update_device(dev);
 653         return sprintf(buf,"%d\n", TEMP_FROM_REG(data->temp_max[nr]) );
 654 }
 655 static ssize_t set_temp_max(struct device *dev, const char *buf,
 656                 size_t count, int nr)
 657 {
 658         struct i2c_client *client = to_i2c_client(dev);
 659         struct lm85_data *data = i2c_get_clientdata(client);
 660         long val = simple_strtol(buf, NULL, 10);
 661
 662         down(&data->update_lock);
 663         data->temp_max[nr] = TEMP_TO_REG(val);
 664         lm85_write_value(client, LM85_REG_TEMP_MAX(nr), data->temp_max[nr]);
 665         up(&data->update_lock);
 666         return count;
 667 }
 668 #define show_temp_reg(offset)                                           \
 669 static ssize_t show_temp_##offset (struct device *dev, char *buf)       \
 670 {                                                                       \
 671         return show_temp(dev, buf, offset - 1);                         \
 672 }                                                                       \
 673 static ssize_t show_temp_##offset##_min (struct device *dev, char *buf) \
 674 {                                                                       \
 675         return show_temp_min(dev, buf, offset - 1);                     \
 676 }                                                                       \
 677 static ssize_t show_temp_##offset##_max (struct device *dev, char *buf) \
 678 {                                                                       \
 679         return show_temp_max(dev, buf, offset - 1);                     \
 680 }                                                                       \
 681 static ssize_t set_temp_##offset##_min (struct device *dev,             \
 682         const char *buf, size_t count)                                  \
 683 {                                                                       \
 684         return set_temp_min(dev, buf, count, offset - 1);               \
 685 }                                                                       \
 686 static ssize_t set_temp_##offset##_max (struct device *dev,             \
 687         const char *buf, size_t count)                                  \
 688 {                                                                       \
 689         return set_temp_max(dev, buf, count, offset - 1);               \
 690 }                                                                       \
 691 static DEVICE_ATTR(temp##offset##_input, S_IRUGO, show_temp_##offset,   \
 692                 NULL);                                                  \
 693 static DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR,               \
 694                 show_temp_##offset##_min, set_temp_##offset##_min);     \
 695 static DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR,               \
 696                 show_temp_##offset##_max, set_temp_##offset##_max);
 697
 698 show_temp_reg(1);
 699 show_temp_reg(2);
 700 show_temp_reg(3);
 701
 702
 703 /* Automatic PWM control */
 704
 705 static ssize_t show_pwm_auto_channels(struct device *dev, char *buf, int nr)
 706 {
 707         struct lm85_data *data = lm85_update_device(dev);
 708         return sprintf(buf,"%d\n", ZONE_FROM_REG(data->autofan[nr].config));
 709 }
 710 static ssize_t set_pwm_auto_channels(struct device *dev, const char *buf,
 711         size_t count, int nr)
 712 {
 713         struct i2c_client *client = to_i2c_client(dev);
 714         struct lm85_data *data = i2c_get_clientdata(client);
 715         long val = simple_strtol(buf, NULL, 10);
 716
 717         down(&data->update_lock);
 718         data->autofan[nr].config = (data->autofan[nr].config & (~0xe0))
 719                 | ZONE_TO_REG(val) ;
 720         lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr),
 721                 data->autofan[nr].config);
 722         up(&data->update_lock);
 723         return count;
 724 }
 725 static ssize_t show_pwm_auto_pwm_min(struct device *dev, char *buf, int nr)
 726 {
 727         struct lm85_data *data = lm85_update_device(dev);
 728         return sprintf(buf,"%d\n", PWM_FROM_REG(data->autofan[nr].min_pwm));
 729 }
 730 static ssize_t set_pwm_auto_pwm_min(struct device *dev, const char *buf,
 731         size_t count, int nr)
 732 {
 733         struct i2c_client *client = to_i2c_client(dev);
 734         struct lm85_data *data = i2c_get_clientdata(client);
 735         long val = simple_strtol(buf, NULL, 10);
 736
 737         down(&data->update_lock);
 738         data->autofan[nr].min_pwm = PWM_TO_REG(val);
 739         lm85_write_value(client, LM85_REG_AFAN_MINPWM(nr),
 740                 data->autofan[nr].min_pwm);
 741         up(&data->update_lock);
 742         return count;
 743 }
 744 static ssize_t show_pwm_auto_pwm_minctl(struct device *dev, char *buf, int nr)
 745 {
 746         struct lm85_data *data = lm85_update_device(dev);
 747         return sprintf(buf,"%d\n", data->autofan[nr].min_off);
 748 }
 749 static ssize_t set_pwm_auto_pwm_minctl(struct device *dev, const char *buf,
 750         size_t count, int nr)
 751 {
 752         struct i2c_client *client = to_i2c_client(dev);
 753         struct lm85_data *data = i2c_get_clientdata(client);
 754         long val = simple_strtol(buf, NULL, 10);
 755
 756         down(&data->update_lock);
 757         data->autofan[nr].min_off = val;
 758         lm85_write_value(client, LM85_REG_AFAN_SPIKE1, data->smooth[0]
 759                 | data->syncpwm3
 760                 | (data->autofan[0].min_off ? 0x20 : 0)
 761                 | (data->autofan[1].min_off ? 0x40 : 0)
 762                 | (data->autofan[2].min_off ? 0x80 : 0)
 763         );
 764         up(&data->update_lock);
 765         return count;
 766 }
 767 static ssize_t show_pwm_auto_pwm_freq(struct device *dev, char *buf, int nr)
 768 {
 769         struct lm85_data *data = lm85_update_device(dev);
 770         return sprintf(buf,"%d\n", FREQ_FROM_REG(data->autofan[nr].freq));
 771 }
 772 static ssize_t set_pwm_auto_pwm_freq(struct device *dev, const char *buf,
 773                 size_t count, int nr)
 774 {
 775         struct i2c_client *client = to_i2c_client(dev);
 776         struct lm85_data *data = i2c_get_clientdata(client);
 777         long val = simple_strtol(buf, NULL, 10);
 778
 779         down(&data->update_lock);
 780         data->autofan[nr].freq = FREQ_TO_REG(val);
 781         lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
 782                 (data->zone[nr].range << 4)
 783                 | data->autofan[nr].freq
 784         );
 785         up(&data->update_lock);
 786         return count;
 787 }
 788 #define pwm_auto(offset)                                                \
 789 static ssize_t show_pwm##offset##_auto_channels (struct device *dev,    \
 790         char *buf)                                                      \
 791 {                                                                       \
 792         return show_pwm_auto_channels(dev, buf, offset - 1);            \
 793 }                                                                       \
 794 static ssize_t set_pwm##offset##_auto_channels (struct device *dev,     \
 795         const char *buf, size_t count)                                  \
 796 {                                                                       \
 797         return set_pwm_auto_channels(dev, buf, count, offset - 1);      \
 798 }                                                                       \
 799 static ssize_t show_pwm##offset##_auto_pwm_min (struct device *dev,     \
 800         char *buf)                                                      \
 801 {                                                                       \
 802         return show_pwm_auto_pwm_min(dev, buf, offset - 1);             \
 803 }                                                                       \
 804 static ssize_t set_pwm##offset##_auto_pwm_min (struct device *dev,      \
 805         const char *buf, size_t count)                                  \
 806 {                                                                       \
 807         return set_pwm_auto_pwm_min(dev, buf, count, offset - 1);       \
 808 }                                                                       \
 809 static ssize_t show_pwm##offset##_auto_pwm_minctl (struct device *dev,  \
 810         char *buf)                                                      \
 811 {                                                                       \
 812         return show_pwm_auto_pwm_minctl(dev, buf, offset - 1);          \
 813 }                                                                       \
 814 static ssize_t set_pwm##offset##_auto_pwm_minctl (struct device *dev,   \
 815         const char *buf, size_t count)                                  \
 816 {                                                                       \
 817         return set_pwm_auto_pwm_minctl(dev, buf, count, offset - 1);    \
 818 }                                                                       \
 819 static ssize_t show_pwm##offset##_auto_pwm_freq (struct device *dev,    \
 820         char *buf)                                                      \
 821 {                                                                       \
 822         return show_pwm_auto_pwm_freq(dev, buf, offset - 1);            \
 823 }                                                                       \
 824 static ssize_t set_pwm##offset##_auto_pwm_freq(struct device *dev,      \
 825         const char *buf, size_t count)                                  \
 826 {                                                                       \
 827         return set_pwm_auto_pwm_freq(dev, buf, count, offset - 1);      \
 828 }                                                                       \
 829 static DEVICE_ATTR(pwm##offset##_auto_channels, S_IRUGO | S_IWUSR,      \
 830                 show_pwm##offset##_auto_channels,                       \
 831                 set_pwm##offset##_auto_channels);                       \
 832 static DEVICE_ATTR(pwm##offset##_auto_pwm_min, S_IRUGO | S_IWUSR,       \
 833                 show_pwm##offset##_auto_pwm_min,                        \
 834                 set_pwm##offset##_auto_pwm_min);                        \
 835 static DEVICE_ATTR(pwm##offset##_auto_pwm_minctl, S_IRUGO | S_IWUSR,    \
 836                 show_pwm##offset##_auto_pwm_minctl,                     \
 837                 set_pwm##offset##_auto_pwm_minctl);                     \
 838 static DEVICE_ATTR(pwm##offset##_auto_pwm_freq, S_IRUGO | S_IWUSR,      \
 839                 show_pwm##offset##_auto_pwm_freq,                       \
 840                 set_pwm##offset##_auto_pwm_freq);
 841 pwm_auto(1);
 842 pwm_auto(2);
 843 pwm_auto(3);
 844
 845 /* Temperature settings for automatic PWM control */
 846
 847 static ssize_t show_temp_auto_temp_off(struct device *dev, char *buf, int nr)
 848 {
 849         struct lm85_data *data = lm85_update_device(dev);
 850         return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) -
 851                 HYST_FROM_REG(data->zone[nr].hyst));
 852 }
 853 static ssize_t set_temp_auto_temp_off(struct device *dev, const char *buf,
 854         size_t count, int nr)
 855 {
 856         struct i2c_client *client = to_i2c_client(dev);
 857         struct lm85_data *data = i2c_get_clientdata(client);
 858         int min;
 859         long val = simple_strtol(buf, NULL, 10);
 860
 861         down(&data->update_lock);
 862         min = TEMP_FROM_REG(data->zone[nr].limit);
 863         data->zone[nr].off_desired = TEMP_TO_REG(val);
 864         data->zone[nr].hyst = HYST_TO_REG(min - val);
 865         if ( nr == 0 || nr == 1 ) {
 866                 lm85_write_value(client, LM85_REG_AFAN_HYST1,
 867                         (data->zone[0].hyst << 4)
 868                         | data->zone[1].hyst
 869                         );
 870         } else {
 871                 lm85_write_value(client, LM85_REG_AFAN_HYST2,
 872                         (data->zone[2].hyst << 4)
 873                 );
 874         }
 875         up(&data->update_lock);
 876         return count;
 877 }
 878 static ssize_t show_temp_auto_temp_min(struct device *dev, char *buf, int nr)
 879 {
 880         struct lm85_data *data = lm85_update_device(dev);
 881         return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) );
 882 }
 883 static ssize_t set_temp_auto_temp_min(struct device *dev, const char *buf,
 884         size_t count, int nr)
 885 {
 886         struct i2c_client *client = to_i2c_client(dev);
 887         struct lm85_data *data = i2c_get_clientdata(client);
 888         long val = simple_strtol(buf, NULL, 10);
 889
 890         down(&data->update_lock);
 891         data->zone[nr].limit = TEMP_TO_REG(val);
 892         lm85_write_value(client, LM85_REG_AFAN_LIMIT(nr),
 893                 data->zone[nr].limit);
 894
 895 /* Update temp_auto_max and temp_auto_range */
 896         data->zone[nr].range = RANGE_TO_REG(
 897                 TEMP_FROM_REG(data->zone[nr].max_desired) -
 898                 TEMP_FROM_REG(data->zone[nr].limit));
 899         lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
 900                 ((data->zone[nr].range & 0x0f) << 4)
 901                 | (data->autofan[nr].freq & 0x07));
 902
 903 /* Update temp_auto_hyst and temp_auto_off */
 904         data->zone[nr].hyst = HYST_TO_REG(TEMP_FROM_REG(
 905                 data->zone[nr].limit) - TEMP_FROM_REG(
 906                 data->zone[nr].off_desired));
 907         if ( nr == 0 || nr == 1 ) {
 908                 lm85_write_value(client, LM85_REG_AFAN_HYST1,
 909                         (data->zone[0].hyst << 4)
 910                         | data->zone[1].hyst
 911                         );
 912         } else {
 913                 lm85_write_value(client, LM85_REG_AFAN_HYST2,
 914                         (data->zone[2].hyst << 4)
 915                 );
 916         }
 917         up(&data->update_lock);
 918         return count;
 919 }
 920 static ssize_t show_temp_auto_temp_max(struct device *dev, char *buf, int nr)
 921 {
 922         struct lm85_data *data = lm85_update_device(dev);
 923         return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) +
 924                 RANGE_FROM_REG(data->zone[nr].range));
 925 }
 926 static ssize_t set_temp_auto_temp_max(struct device *dev, const char *buf,
 927         size_t count, int nr)
 928 {
 929         struct i2c_client *client = to_i2c_client(dev);
 930         struct lm85_data *data = i2c_get_clientdata(client);
 931         int min;
 932         long val = simple_strtol(buf, NULL, 10);
 933
 934         down(&data->update_lock);
 935         min = TEMP_FROM_REG(data->zone[nr].limit);
 936         data->zone[nr].max_desired = TEMP_TO_REG(val);
 937         data->zone[nr].range = RANGE_TO_REG(
 938                 val - min);
 939         lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
 940                 ((data->zone[nr].range & 0x0f) << 4)
 941                 | (data->autofan[nr].freq & 0x07));
 942         up(&data->update_lock);
 943         return count;
 944 }
 945 static ssize_t show_temp_auto_temp_crit(struct device *dev, char *buf, int nr)
 946 {
 947         struct lm85_data *data = lm85_update_device(dev);
 948         return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].critical));
 949 }
 950 static ssize_t set_temp_auto_temp_crit(struct device *dev, const char *buf,
 951                 size_t count, int nr)
 952 {
 953         struct i2c_client *client = to_i2c_client(dev);
 954         struct lm85_data *data = i2c_get_clientdata(client);
 955         long val = simple_strtol(buf, NULL, 10);
 956
 957         down(&data->update_lock);
 958         data->zone[nr].critical = TEMP_TO_REG(val);
 959         lm85_write_value(client, LM85_REG_AFAN_CRITICAL(nr),
 960                 data->zone[nr].critical);
 961         up(&data->update_lock);
 962         return count;
 963 }
 964 #define temp_auto(offset)                                               \
 965 static ssize_t show_temp##offset##_auto_temp_off (struct device *dev,   \
 966         char *buf)                                                      \
 967 {                                                                       \
 968         return show_temp_auto_temp_off(dev, buf, offset - 1);           \
 969 }                                                                       \
 970 static ssize_t set_temp##offset##_auto_temp_off (struct device *dev,    \
 971         const char *buf, size_t count)                                  \
 972 {                                                                       \
 973         return set_temp_auto_temp_off(dev, buf, count, offset - 1);     \
 974 }                                                                       \
 975 static ssize_t show_temp##offset##_auto_temp_min (struct device *dev,   \
 976         char *buf)                                                      \
 977 {                                                                       \
 978         return show_temp_auto_temp_min(dev, buf, offset - 1);           \
 979 }                                                                       \
 980 static ssize_t set_temp##offset##_auto_temp_min (struct device *dev,    \
 981         const char *buf, size_t count)                                  \
 982 {                                                                       \
 983         return set_temp_auto_temp_min(dev, buf, count, offset - 1);     \
 984 }                                                                       \
 985 static ssize_t show_temp##offset##_auto_temp_max (struct device *dev,   \
 986         char *buf)                                                      \
 987 {                                                                       \
 988         return show_temp_auto_temp_max(dev, buf, offset - 1);           \
 989 }                                                                       \
 990 static ssize_t set_temp##offset##_auto_temp_max (struct device *dev,    \
 991         const char *buf, size_t count)                                  \
 992 {                                                                       \
 993         return set_temp_auto_temp_max(dev, buf, count, offset - 1);     \
 994 }                                                                       \
 995 static ssize_t show_temp##offset##_auto_temp_crit (struct device *dev,  \
 996         char *buf)                                                      \
 997 {                                                                       \
 998         return show_temp_auto_temp_crit(dev, buf, offset - 1);          \
 999 }                                                                       \
1000 static ssize_t set_temp##offset##_auto_temp_crit (struct device *dev,   \
1001         const char *buf, size_t count)                                  \
1002 {                                                                       \
1003         return set_temp_auto_temp_crit(dev, buf, count, offset - 1);    \
1004 }                                                                       \
1005 static DEVICE_ATTR(temp##offset##_auto_temp_off, S_IRUGO | S_IWUSR,     \
1006                 show_temp##offset##_auto_temp_off,                      \
1007                 set_temp##offset##_auto_temp_off);                      \
1008 static DEVICE_ATTR(temp##offset##_auto_temp_min, S_IRUGO | S_IWUSR,     \
1009                 show_temp##offset##_auto_temp_min,                      \
1010                 set_temp##offset##_auto_temp_min);                      \
1011 static DEVICE_ATTR(temp##offset##_auto_temp_max, S_IRUGO | S_IWUSR,     \
1012                 show_temp##offset##_auto_temp_max,                      \
1013                 set_temp##offset##_auto_temp_max);                      \
1014 static DEVICE_ATTR(temp##offset##_auto_temp_crit, S_IRUGO | S_IWUSR,    \
1015                 show_temp##offset##_auto_temp_crit,                     \
1016                 set_temp##offset##_auto_temp_crit);
1017 temp_auto(1);
1018 temp_auto(2);
1019 temp_auto(3);
1020
1021 int lm85_attach_adapter(struct i2c_adapter *adapter)
1022 {
1023         if (!(adapter->class & I2C_CLASS_HWMON))
1024                 return 0;
1025         return i2c_detect(adapter, &addr_data, lm85_detect);
1026 }
1027
1028 int lm85_detect(struct i2c_adapter *adapter, int address,
1029                 int kind)
1030 {
1031         int company, verstep ;
1032         struct i2c_client *new_client = NULL;
1033         struct lm85_data *data;
1034         int err = 0;
1035         const char *type_name = "";
1036
1037         if (i2c_is_isa_adapter(adapter)) {
1038                 /* This chip has no ISA interface */
1039                 goto ERROR0 ;
1040         };
1041
1042         if (!i2c_check_functionality(adapter,
1043                                         I2C_FUNC_SMBUS_BYTE_DATA)) {
1044                 /* We need to be able to do byte I/O */
1045                 goto ERROR0 ;
1046         };
1047
1048         /* OK. For now, we presume we have a valid client. We now create the
1049            client structure, even though we cannot fill it completely yet.
1050            But it allows us to access lm85_{read,write}_value. */
1051
1052         if (!(data = kmalloc(sizeof(struct lm85_data), GFP_KERNEL))) {
1053                 err = -ENOMEM;
1054                 goto ERROR0;
1055         }
1056         memset(data, 0, sizeof(struct lm85_data));
1057
1058         new_client = &data->client;
1059         i2c_set_clientdata(new_client, data);
1060         new_client->addr = address;
1061         new_client->adapter = adapter;
1062         new_client->driver = &lm85_driver;
1063         new_client->flags = 0;
1064
1065         /* Now, we do the remaining detection. */
1066
1067         company = lm85_read_value(new_client, LM85_REG_COMPANY);
1068         verstep = lm85_read_value(new_client, LM85_REG_VERSTEP);
1069
1070         dev_dbg(&adapter->dev, "Detecting device at %d,0x%02x with"
1071                 " COMPANY: 0x%02x and VERSTEP: 0x%02x\n",
1072                 i2c_adapter_id(new_client->adapter), new_client->addr,
1073                 company, verstep);
1074
1075         /* If auto-detecting, Determine the chip type. */
1076         if (kind <= 0) {
1077                 dev_dbg(&adapter->dev, "Autodetecting device at %d,0x%02x ...\n",
1078                         i2c_adapter_id(adapter), address );
1079                 if( company == LM85_COMPANY_NATIONAL
1080                     && verstep == LM85_VERSTEP_LM85C ) {
1081                         kind = lm85c ;
1082                 } else if( company == LM85_COMPANY_NATIONAL
1083                     && verstep == LM85_VERSTEP_LM85B ) {
1084                         kind = lm85b ;
1085                 } else if( company == LM85_COMPANY_NATIONAL
1086                     && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC ) {
1087                         dev_err(&adapter->dev, "Unrecognized version/stepping 0x%02x"
1088                                 " Defaulting to LM85.\n", verstep);
1089                         kind = any_chip ;
1090                 } else if( company == LM85_COMPANY_ANALOG_DEV
1091                     && verstep == LM85_VERSTEP_ADM1027 ) {
1092                         kind = adm1027 ;
1093                 } else if( company == LM85_COMPANY_ANALOG_DEV
1094                     && (verstep == LM85_VERSTEP_ADT7463
1095                          || verstep == LM85_VERSTEP_ADT7463C) ) {
1096                         kind = adt7463 ;
1097                 } else if( company == LM85_COMPANY_ANALOG_DEV
1098                     && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC ) {
1099                         dev_err(&adapter->dev, "Unrecognized version/stepping 0x%02x"
1100                                 " Defaulting to Generic LM85.\n", verstep );
1101                         kind = any_chip ;
1102                 } else if( company == LM85_COMPANY_SMSC
1103                     && (verstep == LM85_VERSTEP_EMC6D100_A0
1104                          || verstep == LM85_VERSTEP_EMC6D100_A1) ) {
1105                         /* Unfortunately, we can't tell a '100 from a '101
1106                          * from the registers.  Since a '101 is a '100
1107                          * in a package with fewer pins and therefore no
1108                          * 3.3V, 1.5V or 1.8V inputs, perhaps if those
1109                          * inputs read 0, then it's a '101.
1110                          */
1111                         kind = emc6d100 ;
1112                 } else if( company == LM85_COMPANY_SMSC
1113                     && verstep == LM85_VERSTEP_EMC6D102) {
1114                         kind = emc6d102 ;
1115                 } else if( company == LM85_COMPANY_SMSC
1116                     && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) {
1117                         dev_err(&adapter->dev, "lm85: Detected SMSC chip\n");
1118                         dev_err(&adapter->dev, "lm85: Unrecognized version/stepping 0x%02x"
1119                             " Defaulting to Generic LM85.\n", verstep );
1120                         kind = any_chip ;
1121                 } else if( kind == any_chip
1122                     && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) {
1123                         dev_err(&adapter->dev, "Generic LM85 Version 6 detected\n");
1124                         /* Leave kind as "any_chip" */
1125                 } else {
1126                         dev_dbg(&adapter->dev, "Autodetection failed\n");
1127                         /* Not an LM85 ... */
1128                         if( kind == any_chip ) {  /* User used force=x,y */
1129                                 dev_err(&adapter->dev, "Generic LM85 Version 6 not"
1130                                         " found at %d,0x%02x. Try force_lm85c.\n",
1131                                         i2c_adapter_id(adapter), address );
1132                         }
1133                         err = 0 ;
1134                         goto ERROR1;
1135                 }
1136         }
1137
1138         /* Fill in the chip specific driver values */
1139         if ( kind == any_chip ) {
1140                 type_name = "lm85";
1141         } else if ( kind == lm85b ) {
1142                 type_name = "lm85b";
1143         } else if ( kind == lm85c ) {
1144                 type_name = "lm85c";
1145         } else if ( kind == adm1027 ) {
1146                 type_name = "adm1027";
1147         } else if ( kind == adt7463 ) {
1148                 type_name = "adt7463";
1149         } else if ( kind == emc6d100){
1150                 type_name = "emc6d100";
1151         } else if ( kind == emc6d102 ) {
1152                 type_name = "emc6d102";
1153         }
1154         strlcpy(new_client->name, type_name, I2C_NAME_SIZE);
1155
1156         /* Fill in the remaining client fields */
1157         data->type = kind;
1158         data->valid = 0;
1159         init_MUTEX(&data->update_lock);
1160
1161         /* Tell the I2C layer a new client has arrived */
1162         if ((err = i2c_attach_client(new_client)))
1163                 goto ERROR1;
1164
1165         /* Set the VRM version */
1166         data->vrm = i2c_which_vrm();
1167
1168         /* Initialize the LM85 chip */
1169         lm85_init_client(new_client);
1170
1171         /* Register sysfs hooks */
1172         device_create_file(&new_client->dev, &dev_attr_fan1_input);
1173         device_create_file(&new_client->dev, &dev_attr_fan2_input);
1174         device_create_file(&new_client->dev, &dev_attr_fan3_input);
1175         device_create_file(&new_client->dev, &dev_attr_fan4_input);
1176         device_create_file(&new_client->dev, &dev_attr_fan1_min);
1177         device_create_file(&new_client->dev, &dev_attr_fan2_min);
1178         device_create_file(&new_client->dev, &dev_attr_fan3_min);
1179         device_create_file(&new_client->dev, &dev_attr_fan4_min);
1180         device_create_file(&new_client->dev, &dev_attr_pwm1);
1181         device_create_file(&new_client->dev, &dev_attr_pwm2);
1182         device_create_file(&new_client->dev, &dev_attr_pwm3);
1183         device_create_file(&new_client->dev, &dev_attr_pwm1_enable);
1184         device_create_file(&new_client->dev, &dev_attr_pwm2_enable);
1185         device_create_file(&new_client->dev, &dev_attr_pwm3_enable);
1186         device_create_file(&new_client->dev, &dev_attr_in0_input);
1187         device_create_file(&new_client->dev, &dev_attr_in1_input);
1188         device_create_file(&new_client->dev, &dev_attr_in2_input);
1189         device_create_file(&new_client->dev, &dev_attr_in3_input);
1190         device_create_file(&new_client->dev, &dev_attr_in4_input);
1191         device_create_file(&new_client->dev, &dev_attr_in0_min);
1192         device_create_file(&new_client->dev, &dev_attr_in1_min);
1193         device_create_file(&new_client->dev, &dev_attr_in2_min);
1194         device_create_file(&new_client->dev, &dev_attr_in3_min);
1195         device_create_file(&new_client->dev, &dev_attr_in4_min);
1196         device_create_file(&new_client->dev, &dev_attr_in0_max);
1197         device_create_file(&new_client->dev, &dev_attr_in1_max);
1198         device_create_file(&new_client->dev, &dev_attr_in2_max);
1199         device_create_file(&new_client->dev, &dev_attr_in3_max);
1200         device_create_file(&new_client->dev, &dev_attr_in4_max);
1201         device_create_file(&new_client->dev, &dev_attr_temp1_input);
1202         device_create_file(&new_client->dev, &dev_attr_temp2_input);
1203         device_create_file(&new_client->dev, &dev_attr_temp3_input);
1204         device_create_file(&new_client->dev, &dev_attr_temp1_min);
1205         device_create_file(&new_client->dev, &dev_attr_temp2_min);
1206         device_create_file(&new_client->dev, &dev_attr_temp3_min);
1207         device_create_file(&new_client->dev, &dev_attr_temp1_max);
1208         device_create_file(&new_client->dev, &dev_attr_temp2_max);
1209         device_create_file(&new_client->dev, &dev_attr_temp3_max);
1210         device_create_file(&new_client->dev, &dev_attr_vrm);
1211         device_create_file(&new_client->dev, &dev_attr_cpu0_vid);
1212         device_create_file(&new_client->dev, &dev_attr_alarms);
1213         device_create_file(&new_client->dev, &dev_attr_pwm1_auto_channels);
1214         device_create_file(&new_client->dev, &dev_attr_pwm2_auto_channels);
1215         device_create_file(&new_client->dev, &dev_attr_pwm3_auto_channels);
1216         device_create_file(&new_client->dev, &dev_attr_pwm1_auto_pwm_min);
1217         device_create_file(&new_client->dev, &dev_attr_pwm2_auto_pwm_min);
1218         device_create_file(&new_client->dev, &dev_attr_pwm3_auto_pwm_min);
1219         device_create_file(&new_client->dev, &dev_attr_pwm1_auto_pwm_minctl);
1220         device_create_file(&new_client->dev, &dev_attr_pwm2_auto_pwm_minctl);
1221         device_create_file(&new_client->dev, &dev_attr_pwm3_auto_pwm_minctl);
1222         device_create_file(&new_client->dev, &dev_attr_pwm1_auto_pwm_freq);
1223         device_create_file(&new_client->dev, &dev_attr_pwm2_auto_pwm_freq);
1224         device_create_file(&new_client->dev, &dev_attr_pwm3_auto_pwm_freq);
1225         device_create_file(&new_client->dev, &dev_attr_temp1_auto_temp_off);
1226         device_create_file(&new_client->dev, &dev_attr_temp2_auto_temp_off);
1227         device_create_file(&new_client->dev, &dev_attr_temp3_auto_temp_off);
1228         device_create_file(&new_client->dev, &dev_attr_temp1_auto_temp_min);
1229         device_create_file(&new_client->dev, &dev_attr_temp2_auto_temp_min);
1230         device_create_file(&new_client->dev, &dev_attr_temp3_auto_temp_min);
1231         device_create_file(&new_client->dev, &dev_attr_temp1_auto_temp_max);
1232         device_create_file(&new_client->dev, &dev_attr_temp2_auto_temp_max);
1233         device_create_file(&new_client->dev, &dev_attr_temp3_auto_temp_max);
1234         device_create_file(&new_client->dev, &dev_attr_temp1_auto_temp_crit);
1235         device_create_file(&new_client->dev, &dev_attr_temp2_auto_temp_crit);
1236         device_create_file(&new_client->dev, &dev_attr_temp3_auto_temp_crit);
1237
1238         return 0;
1239
1240         /* Error out and cleanup code */
1241     ERROR1:
1242         kfree(data);
1243     ERROR0:
1244         return err;
1245 }
1246
1247 int lm85_detach_client(struct i2c_client *client)
1248 {
1249         i2c_detach_client(client);
1250         kfree(i2c_get_clientdata(client));
1251         return 0;
1252 }
1253
1254
1255 int lm85_read_value(struct i2c_client *client, u8 reg)
1256 {
1257         int res;
1258
1259         /* What size location is it? */
1260         switch( reg ) {
1261         case LM85_REG_FAN(0) :  /* Read WORD data */
1262         case LM85_REG_FAN(1) :
1263         case LM85_REG_FAN(2) :
1264         case LM85_REG_FAN(3) :
1265         case LM85_REG_FAN_MIN(0) :
1266         case LM85_REG_FAN_MIN(1) :
1267         case LM85_REG_FAN_MIN(2) :
1268         case LM85_REG_FAN_MIN(3) :
1269         case LM85_REG_ALARM1 :  /* Read both bytes at once */
1270                 res = i2c_smbus_read_byte_data(client, reg) & 0xff ;
1271                 res |= i2c_smbus_read_byte_data(client, reg+1) << 8 ;
1272                 break ;
1273         case ADT7463_REG_TMIN_CTL1 :  /* Read WORD MSB, LSB */
1274                 res = i2c_smbus_read_byte_data(client, reg) << 8 ;
1275                 res |= i2c_smbus_read_byte_data(client, reg+1) & 0xff ;
1276                 break ;
1277         default:        /* Read BYTE data */
1278                 res = i2c_smbus_read_byte_data(client, reg);
1279                 break ;
1280         }
1281
1282         return res ;
1283 }
1284
1285 int lm85_write_value(struct i2c_client *client, u8 reg, int value)
1286 {
1287         int res ;
1288
1289         switch( reg ) {
1290         case LM85_REG_FAN(0) :  /* Write WORD data */
1291         case LM85_REG_FAN(1) :
1292         case LM85_REG_FAN(2) :
1293         case LM85_REG_FAN(3) :
1294         case LM85_REG_FAN_MIN(0) :
1295         case LM85_REG_FAN_MIN(1) :
1296         case LM85_REG_FAN_MIN(2) :
1297         case LM85_REG_FAN_MIN(3) :
1298         /* NOTE: ALARM is read only, so not included here */
1299                 res = i2c_smbus_write_byte_data(client, reg, value & 0xff) ;
1300                 res |= i2c_smbus_write_byte_data(client, reg+1, (value>>8) & 0xff) ;
1301                 break ;
1302         case ADT7463_REG_TMIN_CTL1 :  /* Write WORD MSB, LSB */
1303                 res = i2c_smbus_write_byte_data(client, reg, (value>>8) & 0xff);
1304                 res |= i2c_smbus_write_byte_data(client, reg+1, value & 0xff) ;
1305                 break ;
1306         default:        /* Write BYTE data */
1307                 res = i2c_smbus_write_byte_data(client, reg, value);
1308                 break ;
1309         }
1310
1311         return res ;
1312 }
1313
1314 void lm85_init_client(struct i2c_client *client)
1315 {
1316         int value;
1317         struct lm85_data *data = i2c_get_clientdata(client);
1318
1319         dev_dbg(&client->dev, "Initializing device\n");
1320
1321         /* Warn if part was not "READY" */
1322         value = lm85_read_value(client, LM85_REG_CONFIG);
1323         dev_dbg(&client->dev, "LM85_REG_CONFIG is: 0x%02x\n", value);
1324         if( value & 0x02 ) {
1325                 dev_err(&client->dev, "Client (%d,0x%02x) config is locked.\n",
1326                             i2c_adapter_id(client->adapter), client->addr );
1327         };
1328         if( ! (value & 0x04) ) {
1329                 dev_err(&client->dev, "Client (%d,0x%02x) is not ready.\n",
1330                             i2c_adapter_id(client->adapter), client->addr );
1331         };
1332         if( value & 0x10
1333             && ( data->type == adm1027
1334                 || data->type == adt7463 ) ) {
1335                 dev_err(&client->dev, "Client (%d,0x%02x) VxI mode is set.  "
1336                         "Please report this to the lm85 maintainer.\n",
1337                             i2c_adapter_id(client->adapter), client->addr );
1338         };
1339
1340         /* WE INTENTIONALLY make no changes to the limits,
1341          *   offsets, pwms, fans and zones.  If they were
1342          *   configured, we don't want to mess with them.
1343          *   If they weren't, the default is 100% PWM, no
1344          *   control and will suffice until 'sensors -s'
1345          *   can be run by the user.
1346          */
1347
1348         /* Start monitoring */
1349         value = lm85_read_value(client, LM85_REG_CONFIG);
1350         /* Try to clear LOCK, Set START, save everything else */
1351         value = (value & ~ 0x02) | 0x01 ;
1352         dev_dbg(&client->dev, "Setting CONFIG to: 0x%02x\n", value);
1353         lm85_write_value(client, LM85_REG_CONFIG, value);
1354 }
1355
1356 static struct lm85_data *lm85_update_device(struct device *dev)
1357 {
1358         struct i2c_client *client = to_i2c_client(dev);
1359         struct lm85_data *data = i2c_get_clientdata(client);
1360         int i;
1361
1362         down(&data->update_lock);
1363
1364         if ( !data->valid ||
1365              time_after(jiffies, data->last_reading + LM85_DATA_INTERVAL) ) {
1366                 /* Things that change quickly */
1367                 dev_dbg(&client->dev, "Reading sensor values\n");
1368
1369                 /* Have to read extended bits first to "freeze" the
1370                  * more significant bits that are read later.
1371                  */
1372                 if ( (data->type == adm1027) || (data->type == adt7463) ) {
1373                         int ext1 = lm85_read_value(client,
1374                                                    ADM1027_REG_EXTEND_ADC1);
1375                         int ext2 =  lm85_read_value(client,
1376                                                     ADM1027_REG_EXTEND_ADC2);
1377                         int val = (ext1 << 8) + ext2;
1378
1379                         for(i = 0; i <= 4; i++)
1380                                 data->in_ext[i] = (val>>(i * 2))&0x03;
1381
1382                         for(i = 0; i <= 2; i++)
1383                                 data->temp_ext[i] = (val>>((i + 5) * 2))&0x03;
1384                 }
1385
1386                 /* adc_scale is 2^(number of LSBs). There are 4 extra bits in
1387                    the emc6d102 and 2 in the adt7463 and adm1027. In all
1388                    other chips ext is always 0 and the value of scale is
1389                    irrelevant. So it is left in 4*/
1390                 data->adc_scale = (data->type == emc6d102 ) ? 16 : 4;
1391
1392                 for (i = 0; i <= 4; ++i) {
1393                         data->in[i] =
1394                             lm85_read_value(client, LM85_REG_IN(i));
1395                 }
1396
1397                 for (i = 0; i <= 3; ++i) {
1398                         data->fan[i] =
1399                             lm85_read_value(client, LM85_REG_FAN(i));
1400                 }
1401
1402                 for (i = 0; i <= 2; ++i) {
1403                         data->temp[i] =
1404                             lm85_read_value(client, LM85_REG_TEMP(i));
1405                 }
1406
1407                 for (i = 0; i <= 2; ++i) {
1408                         data->pwm[i] =
1409                             lm85_read_value(client, LM85_REG_PWM(i));
1410                 }
1411
1412                 data->alarms = lm85_read_value(client, LM85_REG_ALARM1);
1413
1414                 if ( data->type == adt7463 ) {
1415                         if( data->therm_total < ULONG_MAX - 256 ) {
1416                             data->therm_total +=
1417                                 lm85_read_value(client, ADT7463_REG_THERM );
1418                         }
1419                 } else if ( data->type == emc6d100 ) {
1420                         /* Three more voltage sensors */
1421                         for (i = 5; i <= 7; ++i) {
1422                                 data->in[i] =
1423                                         lm85_read_value(client, EMC6D100_REG_IN(i));
1424                         }
1425                         /* More alarm bits */
1426                         data->alarms |=
1427                                 lm85_read_value(client, EMC6D100_REG_ALARM3) << 16;
1428                 } else if (data->type == emc6d102 ) {
1429                         /* Have to read LSB bits after the MSB ones because
1430                            the reading of the MSB bits has frozen the
1431                            LSBs (backward from the ADM1027).
1432                          */
1433                         int ext1 = lm85_read_value(client,
1434                                                    EMC6D102_REG_EXTEND_ADC1);
1435                         int ext2 = lm85_read_value(client,
1436                                                    EMC6D102_REG_EXTEND_ADC2);
1437                         int ext3 = lm85_read_value(client,
1438                                                    EMC6D102_REG_EXTEND_ADC3);
1439                         int ext4 = lm85_read_value(client,
1440                                                    EMC6D102_REG_EXTEND_ADC4);
1441                         data->in_ext[0] = ext3 & 0x0f;
1442                         data->in_ext[1] = ext4 & 0x0f;
1443                         data->in_ext[2] = (ext4 >> 4) & 0x0f;
1444                         data->in_ext[3] = (ext3 >> 4) & 0x0f;
1445                         data->in_ext[4] = (ext2 >> 4) & 0x0f;
1446
1447                         data->temp_ext[0] = ext1 & 0x0f;
1448                         data->temp_ext[1] = ext2 & 0x0f;
1449                         data->temp_ext[2] = (ext1 >> 4) & 0x0f;
1450                 }
1451
1452                 data->last_reading = jiffies ;
1453         };  /* last_reading */
1454
1455         if ( !data->valid ||
1456              time_after(jiffies, data->last_config + LM85_CONFIG_INTERVAL) ) {
1457                 /* Things that don't change often */
1458                 dev_dbg(&client->dev, "Reading config values\n");
1459
1460                 for (i = 0; i <= 4; ++i) {
1461                         data->in_min[i] =
1462                             lm85_read_value(client, LM85_REG_IN_MIN(i));
1463                         data->in_max[i] =
1464                             lm85_read_value(client, LM85_REG_IN_MAX(i));
1465                 }
1466
1467                 if ( data->type == emc6d100 ) {
1468                         for (i = 5; i <= 7; ++i) {
1469                                 data->in_min[i] =
1470                                         lm85_read_value(client, EMC6D100_REG_IN_MIN(i));
1471                                 data->in_max[i] =
1472                                         lm85_read_value(client, EMC6D100_REG_IN_MAX(i));
1473                         }
1474                 }
1475
1476                 for (i = 0; i <= 3; ++i) {
1477                         data->fan_min[i] =
1478                             lm85_read_value(client, LM85_REG_FAN_MIN(i));
1479                 }
1480
1481                 for (i = 0; i <= 2; ++i) {
1482                         data->temp_min[i] =
1483                             lm85_read_value(client, LM85_REG_TEMP_MIN(i));
1484                         data->temp_max[i] =
1485                             lm85_read_value(client, LM85_REG_TEMP_MAX(i));
1486                 }
1487
1488                 data->vid = lm85_read_value(client, LM85_REG_VID);
1489
1490                 for (i = 0; i <= 2; ++i) {
1491                         int val ;
1492                         data->autofan[i].config =
1493                             lm85_read_value(client, LM85_REG_AFAN_CONFIG(i));
1494                         val = lm85_read_value(client, LM85_REG_AFAN_RANGE(i));
1495                         data->autofan[i].freq = val & 0x07 ;
1496                         data->zone[i].range = (val >> 4) & 0x0f ;
1497                         data->autofan[i].min_pwm =
1498                             lm85_read_value(client, LM85_REG_AFAN_MINPWM(i));
1499                         data->zone[i].limit =
1500                             lm85_read_value(client, LM85_REG_AFAN_LIMIT(i));
1501                         data->zone[i].critical =
1502                             lm85_read_value(client, LM85_REG_AFAN_CRITICAL(i));
1503                 }
1504
1505                 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE1);
1506                 data->smooth[0] = i & 0x0f ;
1507                 data->syncpwm3 = i & 0x10 ;  /* Save PWM3 config */
1508                 data->autofan[0].min_off = (i & 0x20) != 0 ;
1509                 data->autofan[1].min_off = (i & 0x40) != 0 ;
1510                 data->autofan[2].min_off = (i & 0x80) != 0 ;
1511                 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE2);
1512                 data->smooth[1] = (i>>4) & 0x0f ;
1513                 data->smooth[2] = i & 0x0f ;
1514
1515                 i = lm85_read_value(client, LM85_REG_AFAN_HYST1);
1516                 data->zone[0].hyst = (i>>4) & 0x0f ;
1517                 data->zone[1].hyst = i & 0x0f ;
1518
1519                 i = lm85_read_value(client, LM85_REG_AFAN_HYST2);
1520                 data->zone[2].hyst = (i>>4) & 0x0f ;
1521
1522                 if ( (data->type == lm85b) || (data->type == lm85c) ) {
1523                         data->tach_mode = lm85_read_value(client,
1524                                 LM85_REG_TACH_MODE );
1525                         data->spinup_ctl = lm85_read_value(client,
1526                                 LM85_REG_SPINUP_CTL );
1527                 } else if ( (data->type == adt7463) || (data->type == adm1027) ) {
1528                         if ( data->type == adt7463 ) {
1529                                 for (i = 0; i <= 2; ++i) {
1530                                     data->oppoint[i] = lm85_read_value(client,
1531                                         ADT7463_REG_OPPOINT(i) );
1532                                 }
1533                                 data->tmin_ctl = lm85_read_value(client,
1534                                         ADT7463_REG_TMIN_CTL1 );
1535                                 data->therm_limit = lm85_read_value(client,
1536                                         ADT7463_REG_THERM_LIMIT );
1537                         }
1538                         for (i = 0; i <= 2; ++i) {
1539                             data->temp_offset[i] = lm85_read_value(client,
1540                                 ADM1027_REG_TEMP_OFFSET(i) );
1541                         }
1542                         data->tach_mode = lm85_read_value(client,
1543                                 ADM1027_REG_CONFIG3 );
1544                         data->fan_ppr = lm85_read_value(client,
1545                                 ADM1027_REG_FAN_PPR );
1546                 }
1547
1548                 data->last_config = jiffies;
1549         };  /* last_config */
1550
1551         data->valid = 1;
1552
1553         up(&data->update_lock);
1554
1555         return data;
1556 }
1557
1558
1559 static int __init sm_lm85_init(void)
1560 {
1561         return i2c_add_driver(&lm85_driver);
1562 }
1563
1564 static void  __exit sm_lm85_exit(void)
1565 {
1566         i2c_del_driver(&lm85_driver);
1567 }
1568
1569 /* Thanks to Richard Barrington for adding the LM85 to sensors-detect.
1570  * Thanks to Margit Schubert-While <margitsw@t-online.de> for help with
1571  *     post 2.7.0 CVS changes.
1572  */
1573 MODULE_LICENSE("GPL");
1574 MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, Margit Schubert-While <margitsw@t-online.de>, Justin Thiessen <jthiessen@penguincomputing.com");
1575 MODULE_DESCRIPTION("LM85-B, LM85-C driver");
1576
1577 module_init(sm_lm85_init);
1578 module_exit(sm_lm85_exit);