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/i2c.h>
  31 #include <linux/i2c-sensor.h>
  32 #include <linux/i2c-vid.h>
  33
  34 /* Addresses to scan */
  35 static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
  36 static unsigned int normal_isa[] = { I2C_CLIENT_ISA_END };
  37
  38 /* Insmod parameters */
  39 SENSORS_INSMOD_5(lm85b, lm85c, adm1027, adt7463, emc6d100);
  40
  41 /* The LM85 registers */
  42
  43 #define LM85_REG_IN(nr)                 (0x20 + (nr))
  44 #define LM85_REG_IN_MIN(nr)             (0x44 + (nr) * 2)
  45 #define LM85_REG_IN_MAX(nr)             (0x45 + (nr) * 2)
  46
  47 #define LM85_REG_TEMP(nr)               (0x25 + (nr))
  48 #define LM85_REG_TEMP_MIN(nr)           (0x4e + (nr) * 2)
  49 #define LM85_REG_TEMP_MAX(nr)           (0x4f + (nr) * 2)
  50
  51 /* Fan speeds are LSB, MSB (2 bytes) */
  52 #define LM85_REG_FAN(nr)                (0x28 + (nr) *2)
  53 #define LM85_REG_FAN_MIN(nr)            (0x54 + (nr) *2)
  54
  55 #define LM85_REG_PWM(nr)                (0x30 + (nr))
  56
  57 #define ADT7463_REG_OPPOINT(nr)         (0x33 + (nr))
  58
  59 #define ADT7463_REG_TMIN_CTL1           0x36
  60 #define ADT7463_REG_TMIN_CTL2           0x37
  61
  62 #define LM85_REG_DEVICE                 0x3d
  63 #define LM85_REG_COMPANY                0x3e
  64 #define LM85_REG_VERSTEP                0x3f
  65 /* These are the recognized values for the above regs */
  66 #define LM85_DEVICE_ADX                 0x27
  67 #define LM85_COMPANY_NATIONAL           0x01
  68 #define LM85_COMPANY_ANALOG_DEV         0x41
  69 #define LM85_COMPANY_SMSC               0x5c
  70 #define LM85_VERSTEP_VMASK              0xf0
  71 #define LM85_VERSTEP_GENERIC            0x60
  72 #define LM85_VERSTEP_LM85C              0x60
  73 #define LM85_VERSTEP_LM85B              0x62
  74 #define LM85_VERSTEP_ADM1027            0x60
  75 #define LM85_VERSTEP_ADT7463            0x62
  76 #define LM85_VERSTEP_EMC6D100_A0        0x60
  77 #define LM85_VERSTEP_EMC6D100_A1        0x61
  78
  79 #define LM85_REG_CONFIG                 0x40
  80
  81 #define LM85_REG_ALARM1                 0x41
  82 #define LM85_REG_ALARM2                 0x42
  83
  84 #define LM85_REG_VID                    0x43
  85
  86 /* Automated FAN control */
  87 #define LM85_REG_AFAN_CONFIG(nr)        (0x5c + (nr))
  88 #define LM85_REG_AFAN_RANGE(nr)         (0x5f + (nr))
  89 #define LM85_REG_AFAN_SPIKE1            0x62
  90 #define LM85_REG_AFAN_SPIKE2            0x63
  91 #define LM85_REG_AFAN_MINPWM(nr)        (0x64 + (nr))
  92 #define LM85_REG_AFAN_LIMIT(nr)         (0x67 + (nr))
  93 #define LM85_REG_AFAN_CRITICAL(nr)      (0x6a + (nr))
  94 #define LM85_REG_AFAN_HYST1             0x6d
  95 #define LM85_REG_AFAN_HYST2             0x6e
  96
  97 #define LM85_REG_TACH_MODE              0x74
  98 #define LM85_REG_SPINUP_CTL             0x75
  99
 100 #define ADM1027_REG_TEMP_OFFSET(nr)     (0x70 + (nr))
 101 #define ADM1027_REG_CONFIG2             0x73
 102 #define ADM1027_REG_INTMASK1            0x74
 103 #define ADM1027_REG_INTMASK2            0x75
 104 #define ADM1027_REG_EXTEND_ADC1         0x76
 105 #define ADM1027_REG_EXTEND_ADC2         0x77
 106 #define ADM1027_REG_CONFIG3             0x78
 107 #define ADM1027_REG_FAN_PPR             0x7b
 108
 109 #define ADT7463_REG_THERM               0x79
 110 #define ADT7463_REG_THERM_LIMIT         0x7A
 111
 112 #define EMC6D100_REG_ALARM3             0x7d
 113 /* IN5, IN6 and IN7 */
 114 #define EMC6D100_REG_IN(nr)             (0x70 + ((nr)-5))
 115 #define EMC6D100_REG_IN_MIN(nr)         (0x73 + ((nr)-5) * 2)
 116 #define EMC6D100_REG_IN_MAX(nr)         (0x74 + ((nr)-5) * 2)
 117
 118 #define LM85_ALARM_IN0                  0x0001
 119 #define LM85_ALARM_IN1                  0x0002
 120 #define LM85_ALARM_IN2                  0x0004
 121 #define LM85_ALARM_IN3                  0x0008
 122 #define LM85_ALARM_TEMP1                0x0010
 123 #define LM85_ALARM_TEMP2                0x0020
 124 #define LM85_ALARM_TEMP3                0x0040
 125 #define LM85_ALARM_ALARM2               0x0080
 126 #define LM85_ALARM_IN4                  0x0100
 127 #define LM85_ALARM_RESERVED             0x0200
 128 #define LM85_ALARM_FAN1                 0x0400
 129 #define LM85_ALARM_FAN2                 0x0800
 130 #define LM85_ALARM_FAN3                 0x1000
 131 #define LM85_ALARM_FAN4                 0x2000
 132 #define LM85_ALARM_TEMP1_FAULT          0x4000
 133 #define LM85_ALARM_TEMP3_FAULT          0x8000
 134
 135
 136 /* Conversions. Rounding and limit checking is only done on the TO_REG
 137    variants. Note that you should be a bit careful with which arguments
 138    these macros are called: arguments may be evaluated more than once.
 139  */
 140
 141 /* IN are scaled 1.000 == 0xc0, mag = 3 */
 142 #define IN_TO_REG(val)          (SENSORS_LIMIT((((val)*0xc0+500)/1000),0,255))
 143 #define INEXT_FROM_REG(val,ext) (((val)*1000 + (ext)*250 + 96)/0xc0)
 144 #define IN_FROM_REG(val)        (INEXT_FROM_REG(val,0))
 145
 146 /* IN are scaled acording to built-in resistors */
 147 static int lm85_scaling[] = {  /* .001 Volts */
 148                 2500, 2250, 3300, 5000, 12000,
 149                 3300, 1500, 1800 /*EMC6D100*/
 150         };
 151 #define SCALE(val,from,to)              (((val)*(to) + ((from)/2))/(from))
 152 #define INS_TO_REG(n,val)               (SENSORS_LIMIT(SCALE(val,lm85_scaling[n],192),0,255))
 153 #define INSEXT_FROM_REG(n,val,ext)      (SCALE((val)*4 + (ext),192*4,lm85_scaling[n]))
 154 #define INS_FROM_REG(n,val)             (INSEXT_FROM_REG(n,val,0))
 155
 156 /* FAN speed is measured using 90kHz clock */
 157 #define FAN_TO_REG(val)         (SENSORS_LIMIT( (val)<=0?0: 5400000/(val),0,65534))
 158 #define FAN_FROM_REG(val)       ((val)==0?-1:(val)==0xffff?0:5400000/(val))
 159
 160 /* Temperature is reported in .001 degC increments */
 161 #define TEMP_TO_REG(val)                (SENSORS_LIMIT(((val)+500)/1000,-127,127))
 162 #define TEMPEXT_FROM_REG(val,ext)       ((val)*1000 + (ext)*250)
 163 #define TEMP_FROM_REG(val)              (TEMPEXT_FROM_REG(val,0))
 164 #define EXTTEMP_TO_REG(val)             (SENSORS_LIMIT((val)/250,-127,127))
 165
 166 #define PWM_TO_REG(val)                 (SENSORS_LIMIT(val,0,255))
 167 #define PWM_FROM_REG(val)               (val)
 168
 169 #define EXT_FROM_REG(val,sensor)        (((val)>>(sensor * 2))&0x03)
 170
 171 /* ZONEs have the following parameters:
 172  *    Limit (low) temp,           1. degC
 173  *    Hysteresis (below limit),   1. degC (0-15)
 174  *    Range of speed control,     .1 degC (2-80)
 175  *    Critical (high) temp,       1. degC
 176  *
 177  * FAN PWMs have the following parameters:
 178  *    Reference Zone,                 1, 2, 3, etc.
 179  *    Spinup time,                    .05 sec
 180  *    PWM value at limit/low temp,    1 count
 181  *    PWM Frequency,                  1. Hz
 182  *    PWM is Min or OFF below limit,  flag
 183  *    Invert PWM output,              flag
 184  *
 185  * Some chips filter the temp, others the fan.
 186  *    Filter constant (or disabled)   .1 seconds
 187  */
 188
 189 /* These are the zone temperature range encodings in .001 degree C */
 190 static int lm85_range_map[] = {
 191                 2000,  2500,  3300,  4000,  5000,  6600,
 192                 8000, 10000, 13300, 16000, 20000, 26600,
 193                 32000, 40000, 53300, 80000
 194         };
 195 static int RANGE_TO_REG( int range )
 196 {
 197         int i;
 198
 199         if ( range < lm85_range_map[0] ) {
 200                 return 0 ;
 201         } else if ( range > lm85_range_map[15] ) {
 202                 return 15 ;
 203         } else {  /* find closest match */
 204                 for ( i = 14 ; i >= 0 ; --i ) {
 205                         if ( range > lm85_range_map[i] ) { /* range bracketed */
 206                                 if ((lm85_range_map[i+1] - range) <
 207                                         (range - lm85_range_map[i])) {
 208                                         i++;
 209                                         break;
 210                                 }
 211                                 break;
 212                         }
 213                 }
 214         }
 215         return( i & 0x0f );
 216 }
 217 #define RANGE_FROM_REG(val) (lm85_range_map[(val)&0x0f])
 218
 219 /* These are the Acoustic Enhancement, or Temperature smoothing encodings
 220  * NOTE: The enable/disable bit is INCLUDED in these encodings as the
 221  *       MSB (bit 3, value 8).  If the enable bit is 0, the encoded value
 222  *       is ignored, or set to 0.
 223  */
 224 /* These are the PWM frequency encodings */
 225 static int lm85_freq_map[] = { /* .1 Hz */
 226                 100, 150, 230, 300, 380, 470, 620, 940
 227         };
 228 static int FREQ_TO_REG( int freq )
 229 {
 230         int i;
 231
 232         if( freq >= lm85_freq_map[7] ) { return 7 ; }
 233         for( i = 0 ; i < 7 ; ++i )
 234                 if( freq <= lm85_freq_map[i] )
 235                         break ;
 236         return( i & 0x07 );
 237 }
 238 #define FREQ_FROM_REG(val) (lm85_freq_map[(val)&0x07])
 239
 240 /* Since we can't use strings, I'm abusing these numbers
 241  *   to stand in for the following meanings:
 242  *      1 -- PWM responds to Zone 1
 243  *      2 -- PWM responds to Zone 2
 244  *      3 -- PWM responds to Zone 3
 245  *     23 -- PWM responds to the higher temp of Zone 2 or 3
 246  *    123 -- PWM responds to highest of Zone 1, 2, or 3
 247  *      0 -- PWM is always at 0% (ie, off)
 248  *     -1 -- PWM is always at 100%
 249  *     -2 -- PWM responds to manual control
 250  */
 251
 252 static int lm85_zone_map[] = { 1, 2, 3, -1, 0, 23, 123, -2 };
 253 #define ZONE_FROM_REG(val) (lm85_zone_map[((val)>>5)&0x07])
 254
 255 static int ZONE_TO_REG( int zone )
 256 {
 257         int i;
 258
 259         for( i = 0 ; i <= 7 ; ++i )
 260                 if( zone == lm85_zone_map[i] )
 261                         break ;
 262         if( i > 7 )   /* Not found. */
 263                 i = 3;  /* Always 100% */
 264         return( (i & 0x07)<<5 );
 265 }
 266
 267 #define HYST_TO_REG(val) (SENSORS_LIMIT(((val)+500)/1000,0,15))
 268 #define HYST_FROM_REG(val) ((val)*1000)
 269
 270 #define OFFSET_TO_REG(val) (SENSORS_LIMIT((val)/25,-127,127))
 271 #define OFFSET_FROM_REG(val) ((val)*25)
 272
 273 #define PPR_MASK(fan) (0x03<<(fan *2))
 274 #define PPR_TO_REG(val,fan) (SENSORS_LIMIT((val)-1,0,3)<<(fan *2))
 275 #define PPR_FROM_REG(val,fan) ((((val)>>(fan * 2))&0x03)+1)
 276
 277 /* i2c-vid.h defines vid_from_reg() */
 278 #define VID_FROM_REG(val,vrm) (vid_from_reg((val),(vrm)))
 279
 280 #define ALARMS_FROM_REG(val) (val)
 281
 282 /* Unlike some other drivers we DO NOT set initial limits.  Use
 283  * the config file to set limits.  Some users have reported
 284  * motherboards shutting down when we set limits in a previous
 285  * version of the driver.
 286  */
 287
 288 /* Chip sampling rates
 289  *
 290  * Some sensors are not updated more frequently than once per second
 291  *    so it doesn't make sense to read them more often than that.
 292  *    We cache the results and return the saved data if the driver
 293  *    is called again before a second has elapsed.
 294  *
 295  * Also, there is significant configuration data for this chip
 296  *    given the automatic PWM fan control that is possible.  There
 297  *    are about 47 bytes of config data to only 22 bytes of actual
 298  *    readings.  So, we keep the config data up to date in the cache
 299  *    when it is written and only sample it once every 1 *minute*
 300  */
 301 #define LM85_DATA_INTERVAL  (HZ + HZ / 2)
 302 #define LM85_CONFIG_INTERVAL  (1 * 60 * HZ)
 303
 304 /* For each registered LM85, we need to keep some data in memory. That
 305    data is pointed to by lm85_list[NR]->data. The structure itself is
 306    dynamically allocated, at the same time when a new lm85 client is
 307    allocated. */
 308
 309 /* LM85 can automatically adjust fan speeds based on temperature
 310  * This structure encapsulates an entire Zone config.  There are
 311  * three zones (one for each temperature input) on the lm85
 312  */
 313 struct lm85_zone {
 314         s8 limit;       /* Low temp limit */
 315         u8 hyst;        /* Low limit hysteresis. (0-15) */
 316         u8 range;       /* Temp range, encoded */
 317         s8 critical;    /* "All fans ON" temp limit */
 318         u8 off_desired; /* Actual "off" temperature specified.  Preserved
 319                          * to prevent "drift" as other autofan control
 320                          * values change.
 321                          */
 322         u8 max_desired; /* Actual "max" temperature specified.  Preserved
 323                          * to prevent "drift" as other autofan control
 324                          * values change.
 325                          */
 326 };
 327
 328 struct lm85_autofan {
 329         u8 config;      /* Register value */
 330         u8 freq;        /* PWM frequency, encoded */
 331         u8 min_pwm;     /* Minimum PWM value, encoded */
 332         u8 min_off;     /* Min PWM or OFF below "limit", flag */
 333 };
 334
 335 struct lm85_data {
 336         struct i2c_client client;
 337         struct semaphore lock;
 338         enum chips type;
 339
 340         struct semaphore update_lock;
 341         int valid;              /* !=0 if following fields are valid */
 342         unsigned long last_reading;     /* In jiffies */
 343         unsigned long last_config;      /* In jiffies */
 344
 345         u8 in[8];               /* Register value */
 346         u8 in_max[8];           /* Register value */
 347         u8 in_min[8];           /* Register value */
 348         s8 temp[3];             /* Register value */
 349         s8 temp_min[3];         /* Register value */
 350         s8 temp_max[3];         /* Register value */
 351         s8 temp_offset[3];      /* Register value */
 352         u16 fan[4];             /* Register value */
 353         u16 fan_min[4];         /* Register value */
 354         u8 pwm[3];              /* Register value */
 355         u8 spinup_ctl;          /* Register encoding, combined */
 356         u8 tach_mode;           /* Register encoding, combined */
 357         u16 extend_adc;         /* Register value */
 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 /* Unique ID assigned to each LM85 detected */
 393 static int lm85_id;
 394
 395
 396 /* 4 Fans */
 397 static ssize_t show_fan(struct device *dev, char *buf, int nr)
 398 {
 399         struct lm85_data *data = lm85_update_device(dev);
 400         return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan[nr]) );
 401 }
 402 static ssize_t show_fan_min(struct device *dev, char *buf, int nr)
 403 {
 404         struct lm85_data *data = lm85_update_device(dev);
 405         return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan_min[nr]) );
 406 }
 407 static ssize_t set_fan_min(struct device *dev, const char *buf,
 408                 size_t count, int nr)
 409 {
 410         struct i2c_client *client = to_i2c_client(dev);
 411         struct lm85_data *data = i2c_get_clientdata(client);
 412         int     val;
 413
 414         down(&data->update_lock);
 415         val = simple_strtol(buf, NULL, 10);
 416         data->fan_min[nr] = FAN_TO_REG(val);
 417         lm85_write_value(client, LM85_REG_FAN_MIN(nr), data->fan_min[nr]);
 418         up(&data->update_lock);
 419         return count;
 420 }
 421
 422 #define show_fan_offset(offset)                                         \
 423 static ssize_t show_fan_##offset (struct device *dev, char *buf)        \
 424 {                                                                       \
 425         return show_fan(dev, buf, offset - 1);                          \
 426 }                                                                       \
 427 static ssize_t show_fan_##offset##_min (struct device *dev, char *buf)  \
 428 {                                                                       \
 429         return show_fan_min(dev, buf, offset - 1);                      \
 430 }                                                                       \
 431 static ssize_t set_fan_##offset##_min (struct device *dev,              \
 432         const char *buf, size_t count)                                  \
 433 {                                                                       \
 434         return set_fan_min(dev, buf, count, offset - 1);                \
 435 }                                                                       \
 436 static DEVICE_ATTR(fan##offset##_input, S_IRUGO, show_fan_##offset,     \
 437                 NULL);                                                  \
 438 static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR,                \
 439                 show_fan_##offset##_min, set_fan_##offset##_min);
 440
 441 show_fan_offset(1);
 442 show_fan_offset(2);
 443 show_fan_offset(3);
 444 show_fan_offset(4);
 445
 446 /* vid, vrm, alarms */
 447
 448 static ssize_t show_vid_reg(struct device *dev, char *buf)
 449 {
 450         struct lm85_data *data = lm85_update_device(dev);
 451         return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm));
 452 }
 453
 454 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
 455
 456 static ssize_t show_vrm_reg(struct device *dev, char *buf)
 457 {
 458         struct lm85_data *data = lm85_update_device(dev);
 459         return sprintf(buf, "%ld\n", (long) data->vrm);
 460 }
 461
 462 static ssize_t store_vrm_reg(struct device *dev, const char *buf, size_t count)
 463 {
 464         struct i2c_client *client = to_i2c_client(dev);
 465         struct lm85_data *data = i2c_get_clientdata(client);
 466         u32 val;
 467
 468         val = simple_strtoul(buf, NULL, 10);
 469         data->vrm = val;
 470         return count;
 471 }
 472
 473 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
 474
 475 static ssize_t show_alarms_reg(struct device *dev, char *buf)
 476 {
 477         struct lm85_data *data = lm85_update_device(dev);
 478         return sprintf(buf, "%ld\n", (long) ALARMS_FROM_REG(data->alarms));
 479 }
 480
 481 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
 482
 483 /* pwm */
 484
 485 static ssize_t show_pwm(struct device *dev, char *buf, int nr)
 486 {
 487         struct lm85_data *data = lm85_update_device(dev);
 488         return sprintf(buf,"%d\n", PWM_FROM_REG(data->pwm[nr]) );
 489 }
 490 static ssize_t set_pwm(struct device *dev, const char *buf,
 491                 size_t count, int nr)
 492 {
 493         struct i2c_client *client = to_i2c_client(dev);
 494         struct lm85_data *data = i2c_get_clientdata(client);
 495         int     val;
 496
 497         down(&data->update_lock);
 498         val = simple_strtol(buf, NULL, 10);
 499         data->pwm[nr] = PWM_TO_REG(val);
 500         lm85_write_value(client, LM85_REG_PWM(nr), data->pwm[nr]);
 501         up(&data->update_lock);
 502         return count;
 503 }
 504 static ssize_t show_pwm_enable(struct device *dev, char *buf, int nr)
 505 {
 506         struct lm85_data *data = lm85_update_device(dev);
 507         int     pwm_zone;
 508
 509         pwm_zone = ZONE_FROM_REG(data->autofan[nr].config);
 510         return sprintf(buf,"%d\n", (pwm_zone != 0 && pwm_zone != -1) );
 511 }
 512
 513 #define show_pwm_reg(offset)                                            \
 514 static ssize_t show_pwm_##offset (struct device *dev, char *buf)        \
 515 {                                                                       \
 516         return show_pwm(dev, buf, offset - 1);                          \
 517 }                                                                       \
 518 static ssize_t set_pwm_##offset (struct device *dev,                    \
 519                                  const char *buf, size_t count)         \
 520 {                                                                       \
 521         return set_pwm(dev, buf, count, offset - 1);                    \
 522 }                                                                       \
 523 static ssize_t show_pwm_enable##offset (struct device *dev, char *buf)  \
 524 {                                                                       \
 525         return show_pwm_enable(dev, buf, offset - 1);                   \
 526 }                                                                       \
 527 static DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR,                      \
 528                 show_pwm_##offset, set_pwm_##offset);                   \
 529 static DEVICE_ATTR(pwm##offset##_enable, S_IRUGO,                       \
 530                 show_pwm_enable##offset, NULL);
 531
 532 show_pwm_reg(1);
 533 show_pwm_reg(2);
 534 show_pwm_reg(3);
 535
 536 /* Voltages */
 537
 538 static ssize_t show_in(struct device *dev, char *buf, int nr)
 539 {
 540         struct lm85_data *data = lm85_update_device(dev);
 541         return sprintf(buf,"%d\n", INS_FROM_REG(nr, data->in[nr]) );
 542 }
 543 static ssize_t show_in_min(struct device *dev, char *buf, int nr)
 544 {
 545         struct lm85_data *data = lm85_update_device(dev);
 546         return sprintf(buf,"%d\n", INS_FROM_REG(nr, data->in_min[nr]) );
 547 }
 548 static ssize_t set_in_min(struct device *dev, const char *buf,
 549                 size_t count, int nr)
 550 {
 551         struct i2c_client *client = to_i2c_client(dev);
 552         struct lm85_data *data = i2c_get_clientdata(client);
 553         int     val;
 554
 555         down(&data->update_lock);
 556         val = simple_strtol(buf, NULL, 10);
 557         data->in_min[nr] = INS_TO_REG(nr, val);
 558         lm85_write_value(client, LM85_REG_IN_MIN(nr), data->in_min[nr]);
 559         up(&data->update_lock);
 560         return count;
 561 }
 562 static ssize_t show_in_max(struct device *dev, char *buf, int nr)
 563 {
 564         struct lm85_data *data = lm85_update_device(dev);
 565         return sprintf(buf,"%d\n", INS_FROM_REG(nr, data->in_max[nr]) );
 566 }
 567 static ssize_t set_in_max(struct device *dev, const char *buf,
 568                 size_t count, int nr)
 569 {
 570         struct i2c_client *client = to_i2c_client(dev);
 571         struct lm85_data *data = i2c_get_clientdata(client);
 572         int     val;
 573
 574         down(&data->update_lock);
 575         val = simple_strtol(buf, NULL, 10);
 576         data->in_max[nr] = INS_TO_REG(nr, val);
 577         lm85_write_value(client, LM85_REG_IN_MAX(nr), data->in_max[nr]);
 578         up(&data->update_lock);
 579         return count;
 580 }
 581 #define show_in_reg(offset)                                             \
 582 static ssize_t show_in_##offset (struct device *dev, char *buf)         \
 583 {                                                                       \
 584         return show_in(dev, buf, offset);                               \
 585 }                                                                       \
 586 static ssize_t show_in_##offset##_min (struct device *dev, char *buf)   \
 587 {                                                                       \
 588         return show_in_min(dev, buf, offset);                           \
 589 }                                                                       \
 590 static ssize_t show_in_##offset##_max (struct device *dev, char *buf)   \
 591 {                                                                       \
 592         return show_in_max(dev, buf, offset);                           \
 593 }                                                                       \
 594 static ssize_t set_in_##offset##_min (struct device *dev,               \
 595         const char *buf, size_t count)                                  \
 596 {                                                                       \
 597         return set_in_min(dev, buf, count, offset);                     \
 598 }                                                                       \
 599 static ssize_t set_in_##offset##_max (struct device *dev,               \
 600         const char *buf, size_t count)                                  \
 601 {                                                                       \
 602         return set_in_max(dev, buf, count, offset);                     \
 603 }                                                                       \
 604 static DEVICE_ATTR(in##offset##_input, S_IRUGO, show_in_##offset,       \
 605                 NULL);                                                  \
 606 static DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR,                 \
 607                 show_in_##offset##_min, set_in_##offset##_min);         \
 608 static DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR,                 \
 609                 show_in_##offset##_max, set_in_##offset##_max);
 610
 611 show_in_reg(0);
 612 show_in_reg(1);
 613 show_in_reg(2);
 614 show_in_reg(3);
 615 show_in_reg(4);
 616
 617 /* Temps */
 618
 619 static ssize_t show_temp(struct device *dev, char *buf, int nr)
 620 {
 621         struct lm85_data *data = lm85_update_device(dev);
 622         return sprintf(buf,"%d\n", TEMP_FROM_REG(data->temp[nr]) );
 623 }
 624 static ssize_t show_temp_min(struct device *dev, char *buf, int nr)
 625 {
 626         struct lm85_data *data = lm85_update_device(dev);
 627         return sprintf(buf,"%d\n", TEMP_FROM_REG(data->temp_min[nr]) );
 628 }
 629 static ssize_t set_temp_min(struct device *dev, const char *buf,
 630                 size_t count, int nr)
 631 {
 632         struct i2c_client *client = to_i2c_client(dev);
 633         struct lm85_data *data = i2c_get_clientdata(client);
 634         int     val;
 635
 636         down(&data->update_lock);
 637         val = simple_strtol(buf, NULL, 10);
 638         data->temp_min[nr] = TEMP_TO_REG(val);
 639         lm85_write_value(client, LM85_REG_TEMP_MIN(nr), data->temp_min[nr]);
 640         up(&data->update_lock);
 641         return count;
 642 }
 643 static ssize_t show_temp_max(struct device *dev, char *buf, int nr)
 644 {
 645         struct lm85_data *data = lm85_update_device(dev);
 646         return sprintf(buf,"%d\n", TEMP_FROM_REG(data->temp_max[nr]) );
 647 }
 648 static ssize_t set_temp_max(struct device *dev, const char *buf,
 649                 size_t count, int nr)
 650 {
 651         struct i2c_client *client = to_i2c_client(dev);
 652         struct lm85_data *data = i2c_get_clientdata(client);
 653         int     val;
 654
 655         down(&data->update_lock);
 656         val = simple_strtol(buf, NULL, 10);
 657         data->temp_max[nr] = TEMP_TO_REG(val);
 658         lm85_write_value(client, LM85_REG_TEMP_MAX(nr), data->temp_max[nr]);
 659         up(&data->update_lock);
 660         return count;
 661 }
 662 #define show_temp_reg(offset)                                           \
 663 static ssize_t show_temp_##offset (struct device *dev, char *buf)       \
 664 {                                                                       \
 665         return show_temp(dev, buf, offset - 1);                         \
 666 }                                                                       \
 667 static ssize_t show_temp_##offset##_min (struct device *dev, char *buf) \
 668 {                                                                       \
 669         return show_temp_min(dev, buf, offset - 1);                     \
 670 }                                                                       \
 671 static ssize_t show_temp_##offset##_max (struct device *dev, char *buf) \
 672 {                                                                       \
 673         return show_temp_max(dev, buf, offset - 1);                     \
 674 }                                                                       \
 675 static ssize_t set_temp_##offset##_min (struct device *dev,             \
 676         const char *buf, size_t count)                                  \
 677 {                                                                       \
 678         return set_temp_min(dev, buf, count, offset - 1);               \
 679 }                                                                       \
 680 static ssize_t set_temp_##offset##_max (struct device *dev,             \
 681         const char *buf, size_t count)                                  \
 682 {                                                                       \
 683         return set_temp_max(dev, buf, count, offset - 1);               \
 684 }                                                                       \
 685 static DEVICE_ATTR(temp##offset##_input, S_IRUGO, show_temp_##offset,   \
 686                 NULL);                                                  \
 687 static DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR,               \
 688                 show_temp_##offset##_min, set_temp_##offset##_min);     \
 689 static DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR,               \
 690                 show_temp_##offset##_max, set_temp_##offset##_max);
 691
 692 show_temp_reg(1);
 693 show_temp_reg(2);
 694 show_temp_reg(3);
 695
 696
 697 /* Automatic PWM control */
 698
 699 static ssize_t show_pwm_auto_channels(struct device *dev, char *buf, int nr)
 700 {
 701         struct lm85_data *data = lm85_update_device(dev);
 702         return sprintf(buf,"%d\n", ZONE_FROM_REG(data->autofan[nr].config));
 703 }
 704 static ssize_t set_pwm_auto_channels(struct device *dev, const char *buf,
 705         size_t count, int nr)
 706 {
 707         struct i2c_client *client = to_i2c_client(dev);
 708         struct lm85_data *data = i2c_get_clientdata(client);
 709         int     val;
 710
 711         down(&data->update_lock);
 712         val = simple_strtol(buf, NULL, 10);
 713         data->autofan[nr].config = (data->autofan[nr].config & (~0xe0))
 714                 | ZONE_TO_REG(val) ;
 715         lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr),
 716                 data->autofan[nr].config);
 717         up(&data->update_lock);
 718         return count;
 719 }
 720 static ssize_t show_pwm_auto_pwm_min(struct device *dev, char *buf, int nr)
 721 {
 722         struct lm85_data *data = lm85_update_device(dev);
 723         return sprintf(buf,"%d\n", PWM_FROM_REG(data->autofan[nr].min_pwm));
 724 }
 725 static ssize_t set_pwm_auto_pwm_min(struct device *dev, const char *buf,
 726         size_t count, int nr)
 727 {
 728         struct i2c_client *client = to_i2c_client(dev);
 729         struct lm85_data *data = i2c_get_clientdata(client);
 730         int     val;
 731
 732         down(&data->update_lock);
 733         val = simple_strtol(buf, NULL, 10);
 734         data->autofan[nr].min_pwm = PWM_TO_REG(val);
 735         lm85_write_value(client, LM85_REG_AFAN_MINPWM(nr),
 736                 data->autofan[nr].min_pwm);
 737         up(&data->update_lock);
 738         return count;
 739 }
 740 static ssize_t show_pwm_auto_pwm_minctl(struct device *dev, char *buf, int nr)
 741 {
 742         struct lm85_data *data = lm85_update_device(dev);
 743         return sprintf(buf,"%d\n", data->autofan[nr].min_off);
 744 }
 745 static ssize_t set_pwm_auto_pwm_minctl(struct device *dev, const char *buf,
 746         size_t count, int nr)
 747 {
 748         struct i2c_client *client = to_i2c_client(dev);
 749         struct lm85_data *data = i2c_get_clientdata(client);
 750         int     val;
 751
 752         down(&data->update_lock);
 753         val = simple_strtol(buf, NULL, 10);
 754         data->autofan[nr].min_off = val;
 755         lm85_write_value(client, LM85_REG_AFAN_SPIKE1, data->smooth[0]
 756                 | data->syncpwm3
 757                 | (data->autofan[0].min_off ? 0x20 : 0)
 758                 | (data->autofan[1].min_off ? 0x40 : 0)
 759                 | (data->autofan[2].min_off ? 0x80 : 0)
 760         );
 761         up(&data->update_lock);
 762         return count;
 763 }
 764 static ssize_t show_pwm_auto_pwm_freq(struct device *dev, char *buf, int nr)
 765 {
 766         struct lm85_data *data = lm85_update_device(dev);
 767         return sprintf(buf,"%d\n", FREQ_FROM_REG(data->autofan[nr].freq));
 768 }
 769 static ssize_t set_pwm_auto_pwm_freq(struct device *dev, const char *buf,
 770                 size_t count, int nr)
 771 {
 772         struct i2c_client *client = to_i2c_client(dev);
 773         struct lm85_data *data = i2c_get_clientdata(client);
 774         int     val;
 775
 776         down(&data->update_lock);
 777         val = simple_strtol(buf, NULL, 10);
 778         data->autofan[nr].freq = FREQ_TO_REG(val);
 779         lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
 780                 (data->zone[nr].range << 4)
 781                 | data->autofan[nr].freq
 782         );
 783         up(&data->update_lock);
 784         return count;
 785 }
 786 #define pwm_auto(offset)                                                \
 787 static ssize_t show_pwm##offset##_auto_channels (struct device *dev,    \
 788         char *buf)                                                      \
 789 {                                                                       \
 790         return show_pwm_auto_channels(dev, buf, offset - 1);            \
 791 }                                                                       \
 792 static ssize_t set_pwm##offset##_auto_channels (struct device *dev,     \
 793         const char *buf, size_t count)                                  \
 794 {                                                                       \
 795         return set_pwm_auto_channels(dev, buf, count, offset - 1);      \
 796 }                                                                       \
 797 static ssize_t show_pwm##offset##_auto_pwm_min (struct device *dev,     \
 798         char *buf)                                                      \
 799 {                                                                       \
 800         return show_pwm_auto_pwm_min(dev, buf, offset - 1);             \
 801 }                                                                       \
 802 static ssize_t set_pwm##offset##_auto_pwm_min (struct device *dev,      \
 803         const char *buf, size_t count)                                  \
 804 {                                                                       \
 805         return set_pwm_auto_pwm_min(dev, buf, count, offset - 1);       \
 806 }                                                                       \
 807 static ssize_t show_pwm##offset##_auto_pwm_minctl (struct device *dev,  \
 808         char *buf)                                                      \
 809 {                                                                       \
 810         return show_pwm_auto_pwm_minctl(dev, buf, offset - 1);          \
 811 }                                                                       \
 812 static ssize_t set_pwm##offset##_auto_pwm_minctl (struct device *dev,   \
 813         const char *buf, size_t count)                                  \
 814 {                                                                       \
 815         return set_pwm_auto_pwm_minctl(dev, buf, count, offset - 1);    \
 816 }                                                                       \
 817 static ssize_t show_pwm##offset##_auto_pwm_freq (struct device *dev,    \
 818         char *buf)                                                      \
 819 {                                                                       \
 820         return show_pwm_auto_pwm_freq(dev, buf, offset - 1);            \
 821 }                                                                       \
 822 static ssize_t set_pwm##offset##_auto_pwm_freq(struct device *dev,      \
 823         const char *buf, size_t count)                                  \
 824 {                                                                       \
 825         return set_pwm_auto_pwm_freq(dev, buf, count, offset - 1);      \
 826 }                                                                       \
 827 static DEVICE_ATTR(pwm##offset##_auto_channels, S_IRUGO | S_IWUSR,      \
 828                 show_pwm##offset##_auto_channels,                       \
 829                 set_pwm##offset##_auto_channels);                       \
 830 static DEVICE_ATTR(pwm##offset##_auto_pwm_min, S_IRUGO | S_IWUSR,       \
 831                 show_pwm##offset##_auto_pwm_min,                        \
 832                 set_pwm##offset##_auto_pwm_min);                        \
 833 static DEVICE_ATTR(pwm##offset##_auto_pwm_minctl, S_IRUGO | S_IWUSR,    \
 834                 show_pwm##offset##_auto_pwm_minctl,                     \
 835                 set_pwm##offset##_auto_pwm_minctl);                     \
 836 static DEVICE_ATTR(pwm##offset##_auto_pwm_freq, S_IRUGO | S_IWUSR,      \
 837                 show_pwm##offset##_auto_pwm_freq,                       \
 838                 set_pwm##offset##_auto_pwm_freq);
 839 pwm_auto(1);
 840 pwm_auto(2);
 841 pwm_auto(3);
 842
 843 /* Temperature settings for automatic PWM control */
 844
 845 static ssize_t show_temp_auto_temp_off(struct device *dev, char *buf, int nr)
 846 {
 847         struct lm85_data *data = lm85_update_device(dev);
 848         return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) -
 849                 HYST_FROM_REG(data->zone[nr].hyst));
 850 }
 851 static ssize_t set_temp_auto_temp_off(struct device *dev, const char *buf,
 852         size_t count, int nr)
 853 {
 854         struct i2c_client *client = to_i2c_client(dev);
 855         struct lm85_data *data = i2c_get_clientdata(client);
 856         int    min, val;
 857
 858         down(&data->update_lock);
 859         val = simple_strtol(buf, NULL, 10);
 860         min = TEMP_FROM_REG(data->zone[nr].limit);
 861         data->zone[nr].off_desired = TEMP_TO_REG(val);
 862         data->zone[nr].hyst = HYST_TO_REG(min - val);
 863         if ( nr == 0 || nr == 1 ) {
 864                 lm85_write_value(client, LM85_REG_AFAN_HYST1,
 865                         (data->zone[0].hyst << 4)
 866                         | data->zone[1].hyst
 867                         );
 868         } else {
 869                 lm85_write_value(client, LM85_REG_AFAN_HYST2,
 870                         (data->zone[2].hyst << 4)
 871                 );
 872         }
 873         up(&data->update_lock);
 874         return count;
 875 }
 876 static ssize_t show_temp_auto_temp_min(struct device *dev, char *buf, int nr)
 877 {
 878         struct lm85_data *data = lm85_update_device(dev);
 879         return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) );
 880 }
 881 static ssize_t set_temp_auto_temp_min(struct device *dev, const char *buf,
 882         size_t count, int nr)
 883 {
 884         struct i2c_client *client = to_i2c_client(dev);
 885         struct lm85_data *data = i2c_get_clientdata(client);
 886         int    val;
 887
 888         down(&data->update_lock);
 889         val = simple_strtol(buf, NULL, 10);
 890         data->zone[nr].limit = TEMP_TO_REG(val);
 891         lm85_write_value(client, LM85_REG_AFAN_LIMIT(nr),
 892                 data->zone[nr].limit);
 893
 894 /* Update temp_auto_max and temp_auto_range */
 895         data->zone[nr].range = RANGE_TO_REG(
 896                 TEMP_FROM_REG(data->zone[nr].max_desired) -
 897                 TEMP_FROM_REG(data->zone[nr].limit));
 898         lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
 899                 ((data->zone[nr].range & 0x0f) << 4)
 900                 | (data->autofan[nr].freq & 0x07));
 901
 902 /* Update temp_auto_hyst and temp_auto_off */
 903         data->zone[nr].hyst = HYST_TO_REG(TEMP_FROM_REG(
 904                 data->zone[nr].limit) - TEMP_FROM_REG(
 905                 data->zone[nr].off_desired));
 906         if ( nr == 0 || nr == 1 ) {
 907                 lm85_write_value(client, LM85_REG_AFAN_HYST1,
 908                         (data->zone[0].hyst << 4)
 909                         | data->zone[1].hyst
 910                         );
 911         } else {
 912                 lm85_write_value(client, LM85_REG_AFAN_HYST2,
 913                         (data->zone[2].hyst << 4)
 914                 );
 915         }
 916         up(&data->update_lock);
 917         return count;
 918 }
 919 static ssize_t show_temp_auto_temp_max(struct device *dev, char *buf, int nr)
 920 {
 921         struct lm85_data *data = lm85_update_device(dev);
 922         return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) +
 923                 RANGE_FROM_REG(data->zone[nr].range));
 924 }
 925 static ssize_t set_temp_auto_temp_max(struct device *dev, const char *buf,
 926         size_t count, int nr)
 927 {
 928         struct i2c_client *client = to_i2c_client(dev);
 929         struct lm85_data *data = i2c_get_clientdata(client);
 930         int    min, val;
 931
 932         down(&data->update_lock);
 933         min = TEMP_FROM_REG(data->zone[nr].limit);
 934         val = simple_strtol(buf, NULL, 10);
 935         data->zone[nr].max_desired = TEMP_TO_REG(val);
 936         data->zone[nr].range = RANGE_TO_REG(
 937                 val - min);
 938         lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
 939                 ((data->zone[nr].range & 0x0f) << 4)
 940                 | (data->autofan[nr].freq & 0x07));
 941         up(&data->update_lock);
 942         return count;
 943 }
 944 static ssize_t show_temp_auto_temp_crit(struct device *dev, char *buf, int nr)
 945 {
 946         struct lm85_data *data = lm85_update_device(dev);
 947         return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].critical));
 948 }
 949 static ssize_t set_temp_auto_temp_crit(struct device *dev, const char *buf,
 950                 size_t count, int nr)
 951 {
 952         struct i2c_client *client = to_i2c_client(dev);
 953         struct lm85_data *data = i2c_get_clientdata(client);
 954         int     val;
 955
 956         down(&data->update_lock);
 957         val = simple_strtol(buf, NULL, 10);
 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                         kind = adt7463 ;
1096                 } else if( company == LM85_COMPANY_ANALOG_DEV
1097                     && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC ) {
1098                         dev_err(&adapter->dev, "Unrecognized version/stepping 0x%02x"
1099                                 " Defaulting to Generic LM85.\n", verstep );
1100                         kind = any_chip ;
1101                 } else if( company == LM85_COMPANY_SMSC
1102                     && (verstep == LM85_VERSTEP_EMC6D100_A0
1103                          || verstep == LM85_VERSTEP_EMC6D100_A1) ) {
1104                         /* Unfortunately, we can't tell a '100 from a '101
1105                          * from the registers.  Since a '101 is a '100
1106                          * in a package with fewer pins and therefore no
1107                          * 3.3V, 1.5V or 1.8V inputs, perhaps if those
1108                          * inputs read 0, then it's a '101.
1109                          */
1110                         kind = emc6d100 ;
1111                 } else if( company == LM85_COMPANY_SMSC
1112                     && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) {
1113                         dev_err(&adapter->dev, "lm85: Detected SMSC chip\n");
1114                         dev_err(&adapter->dev, "lm85: Unrecognized version/stepping 0x%02x"
1115                             " Defaulting to Generic LM85.\n", verstep );
1116                         kind = any_chip ;
1117                 } else if( kind == any_chip
1118                     && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) {
1119                         dev_err(&adapter->dev, "Generic LM85 Version 6 detected\n");
1120                         /* Leave kind as "any_chip" */
1121                 } else {
1122                         dev_dbg(&adapter->dev, "Autodetection failed\n");
1123                         /* Not an LM85 ... */
1124                         if( kind == any_chip ) {  /* User used force=x,y */
1125                                 dev_err(&adapter->dev, "Generic LM85 Version 6 not"
1126                                         " found at %d,0x%02x. Try force_lm85c.\n",
1127                                         i2c_adapter_id(adapter), address );
1128                         }
1129                         err = 0 ;
1130                         goto ERROR1;
1131                 }
1132         }
1133
1134         /* Fill in the chip specific driver values */
1135         if ( kind == any_chip ) {
1136                 type_name = "lm85";
1137         } else if ( kind == lm85b ) {
1138                 type_name = "lm85b";
1139         } else if ( kind == lm85c ) {
1140                 type_name = "lm85c";
1141         } else if ( kind == adm1027 ) {
1142                 type_name = "adm1027";
1143         } else if ( kind == adt7463 ) {
1144                 type_name = "adt7463";
1145         } else if ( kind == emc6d100){
1146                 type_name = "emc6d100";
1147         }
1148         strlcpy(new_client->name, type_name, I2C_NAME_SIZE);
1149
1150         /* Fill in the remaining client fields */
1151         new_client->id = lm85_id++;
1152         data->type = kind;
1153         data->valid = 0;
1154         init_MUTEX(&data->update_lock);
1155
1156         dev_dbg(&adapter->dev, "Assigning ID %d to %s at %d,0x%02x\n",
1157                 new_client->id, new_client->name,
1158                 i2c_adapter_id(new_client->adapter),
1159                 new_client->addr);
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         case ADM1027_REG_EXTEND_ADC1 :  /* Read two bytes at once */
1271                 res = i2c_smbus_read_byte_data(client, reg) & 0xff ;
1272                 res |= i2c_smbus_read_byte_data(client, reg+1) << 8 ;
1273                 break ;
1274         case ADT7463_REG_TMIN_CTL1 :  /* Read WORD MSB, LSB */
1275                 res = i2c_smbus_read_byte_data(client, reg) << 8 ;
1276                 res |= i2c_smbus_read_byte_data(client, reg+1) & 0xff ;
1277                 break ;
1278         default:        /* Read BYTE data */
1279                 res = i2c_smbus_read_byte_data(client, reg);
1280                 break ;
1281         }
1282
1283         return res ;
1284 }
1285
1286 int lm85_write_value(struct i2c_client *client, u8 reg, int value)
1287 {
1288         int res ;
1289
1290         switch( reg ) {
1291         case LM85_REG_FAN(0) :  /* Write WORD data */
1292         case LM85_REG_FAN(1) :
1293         case LM85_REG_FAN(2) :
1294         case LM85_REG_FAN(3) :
1295         case LM85_REG_FAN_MIN(0) :
1296         case LM85_REG_FAN_MIN(1) :
1297         case LM85_REG_FAN_MIN(2) :
1298         case LM85_REG_FAN_MIN(3) :
1299         /* NOTE: ALARM is read only, so not included here */
1300                 res = i2c_smbus_write_byte_data(client, reg, value & 0xff) ;
1301                 res |= i2c_smbus_write_byte_data(client, reg+1, (value>>8) & 0xff) ;
1302                 break ;
1303         case ADT7463_REG_TMIN_CTL1 :  /* Write WORD MSB, LSB */
1304                 res = i2c_smbus_write_byte_data(client, reg, (value>>8) & 0xff);
1305                 res |= i2c_smbus_write_byte_data(client, reg+1, value & 0xff) ;
1306                 break ;
1307         default:        /* Write BYTE data */
1308                 res = i2c_smbus_write_byte_data(client, reg, value);
1309                 break ;
1310         }
1311
1312         return res ;
1313 }
1314
1315 void lm85_init_client(struct i2c_client *client)
1316 {
1317         int value;
1318         struct lm85_data *data = i2c_get_clientdata(client);
1319
1320         dev_dbg(&client->dev, "Initializing device\n");
1321
1322         /* Warn if part was not "READY" */
1323         value = lm85_read_value(client, LM85_REG_CONFIG);
1324         dev_dbg(&client->dev, "LM85_REG_CONFIG is: 0x%02x\n", value);
1325         if( value & 0x02 ) {
1326                 dev_err(&client->dev, "Client (%d,0x%02x) config is locked.\n",
1327                             i2c_adapter_id(client->adapter), client->addr );
1328         };
1329         if( ! (value & 0x04) ) {
1330                 dev_err(&client->dev, "Client (%d,0x%02x) is not ready.\n",
1331                             i2c_adapter_id(client->adapter), client->addr );
1332         };
1333         if( value & 0x10
1334             && ( data->type == adm1027
1335                 || data->type == adt7463 ) ) {
1336                 dev_err(&client->dev, "Client (%d,0x%02x) VxI mode is set.  "
1337                         "Please report this to the lm85 maintainer.\n",
1338                             i2c_adapter_id(client->adapter), client->addr );
1339         };
1340
1341         /* WE INTENTIONALLY make no changes to the limits,
1342          *   offsets, pwms, fans and zones.  If they were
1343          *   configured, we don't want to mess with them.
1344          *   If they weren't, the default is 100% PWM, no
1345          *   control and will suffice until 'sensors -s'
1346          *   can be run by the user.
1347          */
1348
1349         /* Start monitoring */
1350         value = lm85_read_value(client, LM85_REG_CONFIG);
1351         /* Try to clear LOCK, Set START, save everything else */
1352         value = (value & ~ 0x02) | 0x01 ;
1353         dev_dbg(&client->dev, "Setting CONFIG to: 0x%02x\n", value);
1354         lm85_write_value(client, LM85_REG_CONFIG, value);
1355 }
1356
1357 static struct lm85_data *lm85_update_device(struct device *dev)
1358 {
1359         struct i2c_client *client = to_i2c_client(dev);
1360         struct lm85_data *data = i2c_get_clientdata(client);
1361         int i;
1362
1363         down(&data->update_lock);
1364
1365         if ( !data->valid ||
1366              (jiffies - data->last_reading > LM85_DATA_INTERVAL ) ) {
1367                 /* Things that change quickly */
1368                 dev_dbg(&client->dev, "Reading sensor values\n");
1369
1370                 /* Have to read extended bits first to "freeze" the
1371                  * more significant bits that are read later.
1372                  */
1373                 if ( (data->type == adm1027) || (data->type == adt7463) ) {
1374                         data->extend_adc =
1375                             lm85_read_value(client, ADM1027_REG_EXTEND_ADC1);
1376                 }
1377
1378                 for (i = 0; i <= 4; ++i) {
1379                         data->in[i] =
1380                             lm85_read_value(client, LM85_REG_IN(i));
1381                 }
1382
1383                 for (i = 0; i <= 3; ++i) {
1384                         data->fan[i] =
1385                             lm85_read_value(client, LM85_REG_FAN(i));
1386                 }
1387
1388                 for (i = 0; i <= 2; ++i) {
1389                         data->temp[i] =
1390                             lm85_read_value(client, LM85_REG_TEMP(i));
1391                 }
1392
1393                 for (i = 0; i <= 2; ++i) {
1394                         data->pwm[i] =
1395                             lm85_read_value(client, LM85_REG_PWM(i));
1396                 }
1397
1398                 data->alarms = lm85_read_value(client, LM85_REG_ALARM1);
1399
1400                 if ( data->type == adt7463 ) {
1401                         if( data->therm_total < ULONG_MAX - 256 ) {
1402                             data->therm_total +=
1403                                 lm85_read_value(client, ADT7463_REG_THERM );
1404                         }
1405                 } else if ( data->type == emc6d100 ) {
1406                         /* Three more voltage sensors */
1407                         for (i = 5; i <= 7; ++i) {
1408                                 data->in[i] =
1409                                         lm85_read_value(client, EMC6D100_REG_IN(i));
1410                         }
1411                         /* More alarm bits */
1412                         data->alarms |=
1413                                 lm85_read_value(client, EMC6D100_REG_ALARM3) << 16;
1414                 }
1415
1416                 data->last_reading = jiffies ;
1417         };  /* last_reading */
1418
1419         if ( !data->valid ||
1420              (jiffies - data->last_config > LM85_CONFIG_INTERVAL) ) {
1421                 /* Things that don't change often */
1422                 dev_dbg(&client->dev, "Reading config values\n");
1423
1424                 for (i = 0; i <= 4; ++i) {
1425                         data->in_min[i] =
1426                             lm85_read_value(client, LM85_REG_IN_MIN(i));
1427                         data->in_max[i] =
1428                             lm85_read_value(client, LM85_REG_IN_MAX(i));
1429                 }
1430
1431                 if ( data->type == emc6d100 ) {
1432                         for (i = 5; i <= 7; ++i) {
1433                                 data->in_min[i] =
1434                                         lm85_read_value(client, EMC6D100_REG_IN_MIN(i));
1435                                 data->in_max[i] =
1436                                         lm85_read_value(client, EMC6D100_REG_IN_MAX(i));
1437                         }
1438                 }
1439
1440                 for (i = 0; i <= 3; ++i) {
1441                         data->fan_min[i] =
1442                             lm85_read_value(client, LM85_REG_FAN_MIN(i));
1443                 }
1444
1445                 for (i = 0; i <= 2; ++i) {
1446                         data->temp_min[i] =
1447                             lm85_read_value(client, LM85_REG_TEMP_MIN(i));
1448                         data->temp_max[i] =
1449                             lm85_read_value(client, LM85_REG_TEMP_MAX(i));
1450                 }
1451
1452                 data->vid = lm85_read_value(client, LM85_REG_VID);
1453
1454                 for (i = 0; i <= 2; ++i) {
1455                         int val ;
1456                         data->autofan[i].config =
1457                             lm85_read_value(client, LM85_REG_AFAN_CONFIG(i));
1458                         val = lm85_read_value(client, LM85_REG_AFAN_RANGE(i));
1459                         data->autofan[i].freq = val & 0x07 ;
1460                         data->zone[i].range = (val >> 4) & 0x0f ;
1461                         data->autofan[i].min_pwm =
1462                             lm85_read_value(client, LM85_REG_AFAN_MINPWM(i));
1463                         data->zone[i].limit =
1464                             lm85_read_value(client, LM85_REG_AFAN_LIMIT(i));
1465                         data->zone[i].critical =
1466                             lm85_read_value(client, LM85_REG_AFAN_CRITICAL(i));
1467                 }
1468
1469                 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE1);
1470                 data->smooth[0] = i & 0x0f ;
1471                 data->syncpwm3 = i & 0x10 ;  /* Save PWM3 config */
1472                 data->autofan[0].min_off = (i & 0x20) != 0 ;
1473                 data->autofan[1].min_off = (i & 0x40) != 0 ;
1474                 data->autofan[2].min_off = (i & 0x80) != 0 ;
1475                 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE2);
1476                 data->smooth[1] = (i>>4) & 0x0f ;
1477                 data->smooth[2] = i & 0x0f ;
1478
1479                 i = lm85_read_value(client, LM85_REG_AFAN_HYST1);
1480                 data->zone[0].hyst = (i>>4) & 0x0f ;
1481                 data->zone[1].hyst = i & 0x0f ;
1482
1483                 i = lm85_read_value(client, LM85_REG_AFAN_HYST2);
1484                 data->zone[2].hyst = (i>>4) & 0x0f ;
1485
1486                 if ( (data->type == lm85b) || (data->type == lm85c) ) {
1487                         data->tach_mode = lm85_read_value(client,
1488                                 LM85_REG_TACH_MODE );
1489                         data->spinup_ctl = lm85_read_value(client,
1490                                 LM85_REG_SPINUP_CTL );
1491                 } else if ( (data->type == adt7463) || (data->type == adm1027) ) {
1492                         if ( data->type == adt7463 ) {
1493                                 for (i = 0; i <= 2; ++i) {
1494                                     data->oppoint[i] = lm85_read_value(client,
1495                                         ADT7463_REG_OPPOINT(i) );
1496                                 }
1497                                 data->tmin_ctl = lm85_read_value(client,
1498                                         ADT7463_REG_TMIN_CTL1 );
1499                                 data->therm_limit = lm85_read_value(client,
1500                                         ADT7463_REG_THERM_LIMIT );
1501                         }
1502                         for (i = 0; i <= 2; ++i) {
1503                             data->temp_offset[i] = lm85_read_value(client,
1504                                 ADM1027_REG_TEMP_OFFSET(i) );
1505                         }
1506                         data->tach_mode = lm85_read_value(client,
1507                                 ADM1027_REG_CONFIG3 );
1508                         data->fan_ppr = lm85_read_value(client,
1509                                 ADM1027_REG_FAN_PPR );
1510                 }
1511
1512                 data->last_config = jiffies;
1513         };  /* last_config */
1514
1515         data->valid = 1;
1516
1517         up(&data->update_lock);
1518
1519         return data;
1520 }
1521
1522
1523 static int __init sm_lm85_init(void)
1524 {
1525         return i2c_add_driver(&lm85_driver);
1526 }
1527
1528 static void  __exit sm_lm85_exit(void)
1529 {
1530         i2c_del_driver(&lm85_driver);
1531 }
1532
1533 /* Thanks to Richard Barrington for adding the LM85 to sensors-detect.
1534  * Thanks to Margit Schubert-While <margitsw@t-online.de> for help with
1535  *     post 2.7.0 CVS changes.
1536  */
1537 MODULE_LICENSE("GPL");
1538 MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, Margit Schubert-While <margitsw@t-online.de>, Justin Thiessen <jthiessen@penguincomputing.com");
1539 MODULE_DESCRIPTION("LM85-B, LM85-C driver");
1540
1541 module_init(sm_lm85_init);
1542 module_exit(sm_lm85_exit);