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_4(lm85b, lm85c, adm1027, adt7463);
  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_VERSTEP_GENERIC            0x60
  70 #define LM85_VERSTEP_LM85C              0x60
  71 #define LM85_VERSTEP_LM85B              0x62
  72 #define LM85_VERSTEP_ADM1027            0x60
  73 #define LM85_VERSTEP_ADT7463            0x62
  74
  75 #define LM85_REG_CONFIG                 0x40
  76
  77 #define LM85_REG_ALARM1                 0x41
  78 #define LM85_REG_ALARM2                 0x42
  79
  80 #define LM85_REG_VID                    0x43
  81
  82 /* Automated FAN control */
  83 #define LM85_REG_AFAN_CONFIG(nr)        (0x5c + (nr))
  84 #define LM85_REG_AFAN_RANGE(nr)         (0x5f + (nr))
  85 #define LM85_REG_AFAN_SPIKE1            0x62
  86 #define LM85_REG_AFAN_SPIKE2            0x63
  87 #define LM85_REG_AFAN_MINPWM(nr)        (0x64 + (nr))
  88 #define LM85_REG_AFAN_LIMIT(nr)         (0x67 + (nr))
  89 #define LM85_REG_AFAN_CRITICAL(nr)      (0x6a + (nr))
  90 #define LM85_REG_AFAN_HYST1             0x6d
  91 #define LM85_REG_AFAN_HYST2             0x6e
  92
  93 #define LM85_REG_TACH_MODE              0x74
  94 #define LM85_REG_SPINUP_CTL             0x75
  95
  96 #define ADM1027_REG_TEMP_OFFSET(nr)     (0x70 + (nr))
  97 #define ADM1027_REG_CONFIG2             0x73
  98 #define ADM1027_REG_INTMASK1            0x74
  99 #define ADM1027_REG_INTMASK2            0x75
 100 #define ADM1027_REG_EXTEND_ADC1         0x76
 101 #define ADM1027_REG_EXTEND_ADC2         0x77
 102 #define ADM1027_REG_CONFIG3             0x78
 103 #define ADM1027_REG_FAN_PPR             0x7b
 104
 105 #define ADT7463_REG_THERM               0x79
 106 #define ADT7463_REG_THERM_LIMIT         0x7A
 107
 108 #define LM85_ALARM_IN0                  0x0001
 109 #define LM85_ALARM_IN1                  0x0002
 110 #define LM85_ALARM_IN2                  0x0004
 111 #define LM85_ALARM_IN3                  0x0008
 112 #define LM85_ALARM_TEMP1                0x0010
 113 #define LM85_ALARM_TEMP2                0x0020
 114 #define LM85_ALARM_TEMP3                0x0040
 115 #define LM85_ALARM_ALARM2               0x0080
 116 #define LM85_ALARM_IN4                  0x0100
 117 #define LM85_ALARM_RESERVED             0x0200
 118 #define LM85_ALARM_FAN1                 0x0400
 119 #define LM85_ALARM_FAN2                 0x0800
 120 #define LM85_ALARM_FAN3                 0x1000
 121 #define LM85_ALARM_FAN4                 0x2000
 122 #define LM85_ALARM_TEMP1_FAULT          0x4000
 123 #define LM85_ALARM_TEMP3_FAULT          0x8000
 124
 125
 126 /* Conversions. Rounding and limit checking is only done on the TO_REG
 127    variants. Note that you should be a bit careful with which arguments
 128    these macros are called: arguments may be evaluated more than once.
 129  */
 130
 131 /* IN are scaled 1.000 == 0xc0, mag = 3 */
 132 #define IN_TO_REG(val)          (SENSORS_LIMIT((((val)*0xc0+500)/1000),0,255))
 133 #define INEXT_FROM_REG(val,ext) (((val)*1000 + (ext)*250 + 96)/0xc0)
 134 #define IN_FROM_REG(val)        (INEXT_FROM_REG(val,0))
 135
 136 /* IN are scaled acording to built-in resistors */
 137 static int lm85_scaling[] = {  /* .001 Volts */
 138                 2500, 2250, 3300, 5000, 12000
 139         };
 140 #define SCALE(val,from,to)              (((val)*(to) + ((from)/2))/(from))
 141 #define INS_TO_REG(n,val)               (SENSORS_LIMIT(SCALE(val,lm85_scaling[n],192),0,255))
 142 #define INSEXT_FROM_REG(n,val,ext)      (SCALE((val)*4 + (ext),192*4,lm85_scaling[n]))
 143 #define INS_FROM_REG(n,val)             (INSEXT_FROM_REG(n,val,0))
 144
 145 /* FAN speed is measured using 90kHz clock */
 146 #define FAN_TO_REG(val)         (SENSORS_LIMIT( (val)<=0?0: 5400000/(val),0,65534))
 147 #define FAN_FROM_REG(val)       ((val)==0?-1:(val)==0xffff?0:5400000/(val))
 148
 149 /* Temperature is reported in .001 degC increments */
 150 #define TEMP_TO_REG(val)                (SENSORS_LIMIT(((val)+500)/1000,-127,127))
 151 #define TEMPEXT_FROM_REG(val,ext)       ((val)*1000 + (ext)*250)
 152 #define TEMP_FROM_REG(val)              (TEMPEXT_FROM_REG(val,0))
 153 #define EXTTEMP_TO_REG(val)             (SENSORS_LIMIT((val)/250,-127,127))
 154
 155 #define PWM_TO_REG(val)                 (SENSORS_LIMIT(val,0,255))
 156 #define PWM_FROM_REG(val)               (val)
 157
 158 #define EXT_FROM_REG(val,sensor)        (((val)>>(sensor * 2))&0x03)
 159
 160 /* ZONEs have the following parameters:
 161  *    Limit (low) temp,           1. degC
 162  *    Hysteresis (below limit),   1. degC (0-15)
 163  *    Range of speed control,     .1 degC (2-80)
 164  *    Critical (high) temp,       1. degC
 165  *
 166  * FAN PWMs have the following parameters:
 167  *    Reference Zone,                 1, 2, 3, etc.
 168  *    Spinup time,                    .05 sec
 169  *    PWM value at limit/low temp,    1 count
 170  *    PWM Frequency,                  1. Hz
 171  *    PWM is Min or OFF below limit,  flag
 172  *    Invert PWM output,              flag
 173  *
 174  * Some chips filter the temp, others the fan.
 175  *    Filter constant (or disabled)   .1 seconds
 176  */
 177
 178 /* These are the zone temperature range encodings in .001 degree C */
 179 static int lm85_range_map[] = {
 180                 2000,  2500,  3300,  4000,  5000,  6600,
 181                 8000, 10000, 13300, 16000, 20000, 26600,
 182                 32000, 40000, 53300, 80000
 183         };
 184 static int RANGE_TO_REG( int range )
 185 {
 186         int i;
 187
 188         if ( range < lm85_range_map[0] ) {
 189                 return 0 ;
 190         } else if ( range > lm85_range_map[15] ) {
 191                 return 15 ;
 192         } else {  /* find closest match */
 193                 for ( i = 14 ; i >= 0 ; --i ) {
 194                         if ( range > lm85_range_map[i] ) { /* range bracketed */
 195                                 if ((lm85_range_map[i+1] - range) <
 196                                         (range - lm85_range_map[i])) {
 197                                         i++;
 198                                         break;
 199                                 }
 200                                 break;
 201                         }
 202                 }
 203         }
 204         return( i & 0x0f );
 205 }
 206 #define RANGE_FROM_REG(val) (lm85_range_map[(val)&0x0f])
 207
 208 /* These are the Acoustic Enhancement, or Temperature smoothing encodings
 209  * NOTE: The enable/disable bit is INCLUDED in these encodings as the
 210  *       MSB (bit 3, value 8).  If the enable bit is 0, the encoded value
 211  *       is ignored, or set to 0.
 212  */
 213 /* These are the PWM frequency encodings */
 214 static int lm85_freq_map[] = { /* .1 Hz */
 215                 100, 150, 230, 300, 380, 470, 620, 940
 216         };
 217 static int FREQ_TO_REG( int freq )
 218 {
 219         int i;
 220
 221         if( freq >= lm85_freq_map[7] ) { return 7 ; }
 222         for( i = 0 ; i < 7 ; ++i )
 223                 if( freq <= lm85_freq_map[i] )
 224                         break ;
 225         return( i & 0x07 );
 226 }
 227 #define FREQ_FROM_REG(val) (lm85_freq_map[(val)&0x07])
 228
 229 /* Since we can't use strings, I'm abusing these numbers
 230  *   to stand in for the following meanings:
 231  *      1 -- PWM responds to Zone 1
 232  *      2 -- PWM responds to Zone 2
 233  *      3 -- PWM responds to Zone 3
 234  *     23 -- PWM responds to the higher temp of Zone 2 or 3
 235  *    123 -- PWM responds to highest of Zone 1, 2, or 3
 236  *      0 -- PWM is always at 0% (ie, off)
 237  *     -1 -- PWM is always at 100%
 238  *     -2 -- PWM responds to manual control
 239  */
 240
 241 static int lm85_zone_map[] = { 1, 2, 3, -1, 0, 23, 123, -2 };
 242 #define ZONE_FROM_REG(val) (lm85_zone_map[((val)>>5)&0x07])
 243
 244 static int ZONE_TO_REG( int zone )
 245 {
 246         int i;
 247
 248         for( i = 0 ; i <= 7 ; ++i )
 249                 if( zone == lm85_zone_map[i] )
 250                         break ;
 251         if( i > 7 )   /* Not found. */
 252                 i = 3;  /* Always 100% */
 253         return( (i & 0x07)<<5 );
 254 }
 255
 256 #define HYST_TO_REG(val) (SENSORS_LIMIT(((val)+500)/1000,0,15))
 257 #define HYST_FROM_REG(val) ((val)*1000)
 258
 259 #define OFFSET_TO_REG(val) (SENSORS_LIMIT((val)/25,-127,127))
 260 #define OFFSET_FROM_REG(val) ((val)*25)
 261
 262 #define PPR_MASK(fan) (0x03<<(fan *2))
 263 #define PPR_TO_REG(val,fan) (SENSORS_LIMIT((val)-1,0,3)<<(fan *2))
 264 #define PPR_FROM_REG(val,fan) ((((val)>>(fan * 2))&0x03)+1)
 265
 266 /* i2c-vid.h defines vid_from_reg() */
 267 #define VID_FROM_REG(val,vrm) (vid_from_reg((val),(vrm)))
 268
 269 #define ALARMS_FROM_REG(val) (val)
 270
 271 /* Unlike some other drivers we DO NOT set initial limits.  Use
 272  * the config file to set limits.  Some users have reported
 273  * motherboards shutting down when we set limits in a previous
 274  * version of the driver.
 275  */
 276
 277 /* Chip sampling rates
 278  *
 279  * Some sensors are not updated more frequently than once per second
 280  *    so it doesn't make sense to read them more often than that.
 281  *    We cache the results and return the saved data if the driver
 282  *    is called again before a second has elapsed.
 283  *
 284  * Also, there is significant configuration data for this chip
 285  *    given the automatic PWM fan control that is possible.  There
 286  *    are about 47 bytes of config data to only 22 bytes of actual
 287  *    readings.  So, we keep the config data up to date in the cache
 288  *    when it is written and only sample it once every 1 *minute*
 289  */
 290 #define LM85_DATA_INTERVAL  (HZ + HZ / 2)
 291 #define LM85_CONFIG_INTERVAL  (1 * 60 * HZ)
 292
 293 /* For each registered LM85, we need to keep some data in memory. That
 294    data is pointed to by lm85_list[NR]->data. The structure itself is
 295    dynamically allocated, at the same time when a new lm85 client is
 296    allocated. */
 297
 298 /* LM85 can automatically adjust fan speeds based on temperature
 299  * This structure encapsulates an entire Zone config.  There are
 300  * three zones (one for each temperature input) on the lm85
 301  */
 302 struct lm85_zone {
 303         s8 limit;       /* Low temp limit */
 304         u8 hyst;        /* Low limit hysteresis. (0-15) */
 305         u8 range;       /* Temp range, encoded */
 306         s8 critical;    /* "All fans ON" temp limit */
 307         u8 off_desired; /* Actual "off" temperature specified.  Preserved
 308                          * to prevent "drift" as other autofan control
 309                          * values change.
 310                          */
 311         u8 max_desired; /* Actual "max" temperature specified.  Preserved
 312                          * to prevent "drift" as other autofan control
 313                          * values change.
 314                          */
 315 };
 316
 317 struct lm85_autofan {
 318         u8 config;      /* Register value */
 319         u8 freq;        /* PWM frequency, encoded */
 320         u8 min_pwm;     /* Minimum PWM value, encoded */
 321         u8 min_off;     /* Min PWM or OFF below "limit", flag */
 322 };
 323
 324 struct lm85_data {
 325         struct i2c_client client;
 326         struct semaphore lock;
 327         enum chips type;
 328
 329         struct semaphore update_lock;
 330         int valid;              /* !=0 if following fields are valid */
 331         unsigned long last_reading;     /* In jiffies */
 332         unsigned long last_config;      /* In jiffies */
 333
 334         u8 in[5];               /* Register value */
 335         u8 in_max[5];           /* Register value */
 336         u8 in_min[5];           /* Register value */
 337         s8 temp[3];             /* Register value */
 338         s8 temp_min[3];         /* Register value */
 339         s8 temp_max[3];         /* Register value */
 340         s8 temp_offset[3];      /* Register value */
 341         u16 fan[4];             /* Register value */
 342         u16 fan_min[4];         /* Register value */
 343         u8 pwm[3];              /* Register value */
 344         u8 spinup_ctl;          /* Register encoding, combined */
 345         u8 tach_mode;           /* Register encoding, combined */
 346         u16 extend_adc;         /* Register value */
 347         u8 fan_ppr;             /* Register value */
 348         u8 smooth[3];           /* Register encoding */
 349         u8 vid;                 /* Register value */
 350         u8 vrm;                 /* VRM version */
 351         u8 syncpwm3;            /* Saved PWM3 for TACH 2,3,4 config */
 352         u8 oppoint[3];          /* Register value */
 353         u16 tmin_ctl;           /* Register value */
 354         unsigned long therm_total; /* Cummulative therm count */
 355         u8 therm_limit;         /* Register value */
 356         u16 alarms;             /* Register encoding, combined */
 357         struct lm85_autofan autofan[3];
 358         struct lm85_zone zone[3];
 359 };
 360
 361 static int lm85_attach_adapter(struct i2c_adapter *adapter);
 362 static int lm85_detect(struct i2c_adapter *adapter, int address,
 363                         int kind);
 364 static int lm85_detach_client(struct i2c_client *client);
 365
 366 static int lm85_read_value(struct i2c_client *client, u8 register);
 367 static int lm85_write_value(struct i2c_client *client, u8 register, int value);
 368 static struct lm85_data *lm85_update_device(struct device *dev);
 369 static void lm85_init_client(struct i2c_client *client);
 370
 371
 372 static struct i2c_driver lm85_driver = {
 373         .owner          = THIS_MODULE,
 374         .name           = "lm85",
 375         .id             = I2C_DRIVERID_LM85,
 376         .flags          = I2C_DF_NOTIFY,
 377         .attach_adapter = lm85_attach_adapter,
 378         .detach_client  = lm85_detach_client,
 379 };
 380
 381 /* Unique ID assigned to each LM85 detected */
 382 static int lm85_id;
 383
 384
 385 /* 4 Fans */
 386 static ssize_t show_fan(struct device *dev, char *buf, int nr)
 387 {
 388         struct lm85_data *data = lm85_update_device(dev);
 389         return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan[nr]) );
 390 }
 391 static ssize_t show_fan_min(struct device *dev, char *buf, int nr)
 392 {
 393         struct lm85_data *data = lm85_update_device(dev);
 394         return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan_min[nr]) );
 395 }
 396 static ssize_t set_fan_min(struct device *dev, const char *buf,
 397                 size_t count, int nr)
 398 {
 399         struct i2c_client *client = to_i2c_client(dev);
 400         struct lm85_data *data = i2c_get_clientdata(client);
 401         int     val;
 402
 403         down(&data->update_lock);
 404         val = simple_strtol(buf, NULL, 10);
 405         data->fan_min[nr] = FAN_TO_REG(val);
 406         lm85_write_value(client, LM85_REG_FAN_MIN(nr), data->fan_min[nr]);
 407         up(&data->update_lock);
 408         return count;
 409 }
 410
 411 #define show_fan_offset(offset)                                         \
 412 static ssize_t show_fan_##offset (struct device *dev, char *buf)        \
 413 {                                                                       \
 414         return show_fan(dev, buf, offset - 1);                          \
 415 }                                                                       \
 416 static ssize_t show_fan_##offset##_min (struct device *dev, char *buf)  \
 417 {                                                                       \
 418         return show_fan_min(dev, buf, offset - 1);                      \
 419 }                                                                       \
 420 static ssize_t set_fan_##offset##_min (struct device *dev,              \
 421         const char *buf, size_t count)                                  \
 422 {                                                                       \
 423         return set_fan_min(dev, buf, count, offset - 1);                \
 424 }                                                                       \
 425 static DEVICE_ATTR(fan##offset##_input, S_IRUGO, show_fan_##offset,     \
 426                 NULL);                                                  \
 427 static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR,                \
 428                 show_fan_##offset##_min, set_fan_##offset##_min);
 429
 430 show_fan_offset(1);
 431 show_fan_offset(2);
 432 show_fan_offset(3);
 433 show_fan_offset(4);
 434
 435 /* vid, vrm, alarms */
 436
 437 static ssize_t show_vid_reg(struct device *dev, char *buf)
 438 {
 439         struct lm85_data *data = lm85_update_device(dev);
 440         return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm));
 441 }
 442
 443 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
 444
 445 static ssize_t show_vrm_reg(struct device *dev, char *buf)
 446 {
 447         struct lm85_data *data = lm85_update_device(dev);
 448         return sprintf(buf, "%ld\n", (long) data->vrm);
 449 }
 450
 451 static ssize_t store_vrm_reg(struct device *dev, const char *buf, size_t count)
 452 {
 453         struct i2c_client *client = to_i2c_client(dev);
 454         struct lm85_data *data = i2c_get_clientdata(client);
 455         u32 val;
 456
 457         val = simple_strtoul(buf, NULL, 10);
 458         data->vrm = val;
 459         return count;
 460 }
 461
 462 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
 463
 464 static ssize_t show_alarms_reg(struct device *dev, char *buf)
 465 {
 466         struct lm85_data *data = lm85_update_device(dev);
 467         return sprintf(buf, "%ld\n", (long) ALARMS_FROM_REG(data->alarms));
 468 }
 469
 470 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
 471
 472 /* pwm */
 473
 474 static ssize_t show_pwm(struct device *dev, char *buf, int nr)
 475 {
 476         struct lm85_data *data = lm85_update_device(dev);
 477         return sprintf(buf,"%d\n", PWM_FROM_REG(data->pwm[nr]) );
 478 }
 479 static ssize_t set_pwm(struct device *dev, const char *buf,
 480                 size_t count, int nr)
 481 {
 482         struct i2c_client *client = to_i2c_client(dev);
 483         struct lm85_data *data = i2c_get_clientdata(client);
 484         int     val;
 485
 486         down(&data->update_lock);
 487         val = simple_strtol(buf, NULL, 10);
 488         data->pwm[nr] = PWM_TO_REG(val);
 489         lm85_write_value(client, LM85_REG_PWM(nr), data->pwm[nr]);
 490         up(&data->update_lock);
 491         return count;
 492 }
 493 static ssize_t show_pwm_enable(struct device *dev, char *buf, int nr)
 494 {
 495         struct lm85_data *data = lm85_update_device(dev);
 496         int     pwm_zone;
 497
 498         pwm_zone = ZONE_FROM_REG(data->autofan[nr].config);
 499         return sprintf(buf,"%d\n", (pwm_zone != 0 && pwm_zone != -1) );
 500 }
 501
 502 #define show_pwm_reg(offset)                                            \
 503 static ssize_t show_pwm_##offset (struct device *dev, char *buf)        \
 504 {                                                                       \
 505         return show_pwm(dev, buf, offset - 1);                          \
 506 }                                                                       \
 507 static ssize_t set_pwm_##offset (struct device *dev,                    \
 508                                  const char *buf, size_t count)         \
 509 {                                                                       \
 510         return set_pwm(dev, buf, count, offset - 1);                    \
 511 }                                                                       \
 512 static ssize_t show_pwm_enable##offset (struct device *dev, char *buf)  \
 513 {                                                                       \
 514         return show_pwm_enable(dev, buf, offset - 1);                   \
 515 }                                                                       \
 516 static DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR,                      \
 517                 show_pwm_##offset, set_pwm_##offset);                   \
 518 static DEVICE_ATTR(pwm##offset##_enable, S_IRUGO,                       \
 519                 show_pwm_enable##offset, NULL);
 520
 521 show_pwm_reg(1);
 522 show_pwm_reg(2);
 523 show_pwm_reg(3);
 524
 525 /* Voltages */
 526
 527 static ssize_t show_in(struct device *dev, char *buf, int nr)
 528 {
 529         struct lm85_data *data = lm85_update_device(dev);
 530         return sprintf(buf,"%d\n", INS_FROM_REG(nr, data->in[nr]) );
 531 }
 532 static ssize_t show_in_min(struct device *dev, char *buf, int nr)
 533 {
 534         struct lm85_data *data = lm85_update_device(dev);
 535         return sprintf(buf,"%d\n", INS_FROM_REG(nr, data->in_min[nr]) );
 536 }
 537 static ssize_t set_in_min(struct device *dev, const char *buf,
 538                 size_t count, int nr)
 539 {
 540         struct i2c_client *client = to_i2c_client(dev);
 541         struct lm85_data *data = i2c_get_clientdata(client);
 542         int     val;
 543
 544         down(&data->update_lock);
 545         val = simple_strtol(buf, NULL, 10);
 546         data->in_min[nr] = INS_TO_REG(nr, val);
 547         lm85_write_value(client, LM85_REG_IN_MIN(nr), data->in_min[nr]);
 548         up(&data->update_lock);
 549         return count;
 550 }
 551 static ssize_t show_in_max(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_max[nr]) );
 555 }
 556 static ssize_t set_in_max(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         int     val;
 562
 563         down(&data->update_lock);
 564         val = simple_strtol(buf, NULL, 10);
 565         data->in_max[nr] = INS_TO_REG(nr, val);
 566         lm85_write_value(client, LM85_REG_IN_MAX(nr), data->in_max[nr]);
 567         up(&data->update_lock);
 568         return count;
 569 }
 570 #define show_in_reg(offset)                                             \
 571 static ssize_t show_in_##offset (struct device *dev, char *buf)         \
 572 {                                                                       \
 573         return show_in(dev, buf, offset);                               \
 574 }                                                                       \
 575 static ssize_t show_in_##offset##_min (struct device *dev, char *buf)   \
 576 {                                                                       \
 577         return show_in_min(dev, buf, offset);                           \
 578 }                                                                       \
 579 static ssize_t show_in_##offset##_max (struct device *dev, char *buf)   \
 580 {                                                                       \
 581         return show_in_max(dev, buf, offset);                           \
 582 }                                                                       \
 583 static ssize_t set_in_##offset##_min (struct device *dev,               \
 584         const char *buf, size_t count)                                  \
 585 {                                                                       \
 586         return set_in_min(dev, buf, count, offset);                     \
 587 }                                                                       \
 588 static ssize_t set_in_##offset##_max (struct device *dev,               \
 589         const char *buf, size_t count)                                  \
 590 {                                                                       \
 591         return set_in_max(dev, buf, count, offset);                     \
 592 }                                                                       \
 593 static DEVICE_ATTR(in##offset##_input, S_IRUGO, show_in_##offset,       \
 594                 NULL);                                                  \
 595 static DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR,                 \
 596                 show_in_##offset##_min, set_in_##offset##_min);         \
 597 static DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR,                 \
 598                 show_in_##offset##_max, set_in_##offset##_max);
 599
 600 show_in_reg(0);
 601 show_in_reg(1);
 602 show_in_reg(2);
 603 show_in_reg(3);
 604 show_in_reg(4);
 605
 606 /* Temps */
 607
 608 static ssize_t show_temp(struct device *dev, char *buf, int nr)
 609 {
 610         struct lm85_data *data = lm85_update_device(dev);
 611         return sprintf(buf,"%d\n", TEMP_FROM_REG(data->temp[nr]) );
 612 }
 613 static ssize_t show_temp_min(struct device *dev, char *buf, int nr)
 614 {
 615         struct lm85_data *data = lm85_update_device(dev);
 616         return sprintf(buf,"%d\n", TEMP_FROM_REG(data->temp_min[nr]) );
 617 }
 618 static ssize_t set_temp_min(struct device *dev, const char *buf,
 619                 size_t count, int nr)
 620 {
 621         struct i2c_client *client = to_i2c_client(dev);
 622         struct lm85_data *data = i2c_get_clientdata(client);
 623         int     val;
 624
 625         down(&data->update_lock);
 626         val = simple_strtol(buf, NULL, 10);
 627         data->temp_min[nr] = TEMP_TO_REG(val);
 628         lm85_write_value(client, LM85_REG_TEMP_MIN(nr), data->temp_min[nr]);
 629         up(&data->update_lock);
 630         return count;
 631 }
 632 static ssize_t show_temp_max(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_max[nr]) );
 636 }
 637 static ssize_t set_temp_max(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         int     val;
 643
 644         down(&data->update_lock);
 645         val = simple_strtol(buf, NULL, 10);
 646         data->temp_max[nr] = TEMP_TO_REG(val);
 647         lm85_write_value(client, LM85_REG_TEMP_MAX(nr), data->temp_max[nr]);
 648         up(&data->update_lock);
 649         return count;
 650 }
 651 #define show_temp_reg(offset)                                           \
 652 static ssize_t show_temp_##offset (struct device *dev, char *buf)       \
 653 {                                                                       \
 654         return show_temp(dev, buf, offset - 1);                         \
 655 }                                                                       \
 656 static ssize_t show_temp_##offset##_min (struct device *dev, char *buf) \
 657 {                                                                       \
 658         return show_temp_min(dev, buf, offset - 1);                     \
 659 }                                                                       \
 660 static ssize_t show_temp_##offset##_max (struct device *dev, char *buf) \
 661 {                                                                       \
 662         return show_temp_max(dev, buf, offset - 1);                     \
 663 }                                                                       \
 664 static ssize_t set_temp_##offset##_min (struct device *dev,             \
 665         const char *buf, size_t count)                                  \
 666 {                                                                       \
 667         return set_temp_min(dev, buf, count, offset - 1);               \
 668 }                                                                       \
 669 static ssize_t set_temp_##offset##_max (struct device *dev,             \
 670         const char *buf, size_t count)                                  \
 671 {                                                                       \
 672         return set_temp_max(dev, buf, count, offset - 1);               \
 673 }                                                                       \
 674 static DEVICE_ATTR(temp##offset##_input, S_IRUGO, show_temp_##offset,   \
 675                 NULL);                                                  \
 676 static DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR,               \
 677                 show_temp_##offset##_min, set_temp_##offset##_min);     \
 678 static DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR,               \
 679                 show_temp_##offset##_max, set_temp_##offset##_max);
 680
 681 show_temp_reg(1);
 682 show_temp_reg(2);
 683 show_temp_reg(3);
 684
 685
 686 /* Automatic PWM control */
 687
 688 static ssize_t show_pwm_auto_channels(struct device *dev, char *buf, int nr)
 689 {
 690         struct lm85_data *data = lm85_update_device(dev);
 691         return sprintf(buf,"%d\n", ZONE_FROM_REG(data->autofan[nr].config));
 692 }
 693 static ssize_t set_pwm_auto_channels(struct device *dev, const char *buf,
 694         size_t count, int nr)
 695 {
 696         struct i2c_client *client = to_i2c_client(dev);
 697         struct lm85_data *data = i2c_get_clientdata(client);
 698         int     val;
 699
 700         down(&data->update_lock);
 701         val = simple_strtol(buf, NULL, 10);
 702         data->autofan[nr].config = (data->autofan[nr].config & (~0xe0))
 703                 | ZONE_TO_REG(val) ;
 704         lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr),
 705                 data->autofan[nr].config);
 706         up(&data->update_lock);
 707         return count;
 708 }
 709 static ssize_t show_pwm_auto_pwm_min(struct device *dev, char *buf, int nr)
 710 {
 711         struct lm85_data *data = lm85_update_device(dev);
 712         return sprintf(buf,"%d\n", PWM_FROM_REG(data->autofan[nr].min_pwm));
 713 }
 714 static ssize_t set_pwm_auto_pwm_min(struct device *dev, const char *buf,
 715         size_t count, int nr)
 716 {
 717         struct i2c_client *client = to_i2c_client(dev);
 718         struct lm85_data *data = i2c_get_clientdata(client);
 719         int     val;
 720
 721         down(&data->update_lock);
 722         val = simple_strtol(buf, NULL, 10);
 723         data->autofan[nr].min_pwm = PWM_TO_REG(val);
 724         lm85_write_value(client, LM85_REG_AFAN_MINPWM(nr),
 725                 data->autofan[nr].min_pwm);
 726         up(&data->update_lock);
 727         return count;
 728 }
 729 static ssize_t show_pwm_auto_pwm_minctl(struct device *dev, char *buf, int nr)
 730 {
 731         struct lm85_data *data = lm85_update_device(dev);
 732         return sprintf(buf,"%d\n", data->autofan[nr].min_off);
 733 }
 734 static ssize_t set_pwm_auto_pwm_minctl(struct device *dev, const char *buf,
 735         size_t count, int nr)
 736 {
 737         struct i2c_client *client = to_i2c_client(dev);
 738         struct lm85_data *data = i2c_get_clientdata(client);
 739         int     val;
 740
 741         down(&data->update_lock);
 742         val = simple_strtol(buf, NULL, 10);
 743         data->autofan[nr].min_off = val;
 744         lm85_write_value(client, LM85_REG_AFAN_SPIKE1, data->smooth[0]
 745                 | data->syncpwm3
 746                 | (data->autofan[0].min_off ? 0x20 : 0)
 747                 | (data->autofan[1].min_off ? 0x40 : 0)
 748                 | (data->autofan[2].min_off ? 0x80 : 0)
 749         );
 750         up(&data->update_lock);
 751         return count;
 752 }
 753 static ssize_t show_pwm_auto_pwm_freq(struct device *dev, char *buf, int nr)
 754 {
 755         struct lm85_data *data = lm85_update_device(dev);
 756         return sprintf(buf,"%d\n", FREQ_FROM_REG(data->autofan[nr].freq));
 757 }
 758 static ssize_t set_pwm_auto_pwm_freq(struct device *dev, const char *buf,
 759                 size_t count, int nr)
 760 {
 761         struct i2c_client *client = to_i2c_client(dev);
 762         struct lm85_data *data = i2c_get_clientdata(client);
 763         int     val;
 764
 765         down(&data->update_lock);
 766         val = simple_strtol(buf, NULL, 10);
 767         data->autofan[nr].freq = FREQ_TO_REG(val);
 768         lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
 769                 (data->zone[nr].range << 4)
 770                 | data->autofan[nr].freq
 771         );
 772         up(&data->update_lock);
 773         return count;
 774 }
 775 #define pwm_auto(offset)                                                \
 776 static ssize_t show_pwm##offset##_auto_channels (struct device *dev,    \
 777         char *buf)                                                      \
 778 {                                                                       \
 779         return show_pwm_auto_channels(dev, buf, offset - 1);            \
 780 }                                                                       \
 781 static ssize_t set_pwm##offset##_auto_channels (struct device *dev,     \
 782         const char *buf, size_t count)                                  \
 783 {                                                                       \
 784         return set_pwm_auto_channels(dev, buf, count, offset - 1);      \
 785 }                                                                       \
 786 static ssize_t show_pwm##offset##_auto_pwm_min (struct device *dev,     \
 787         char *buf)                                                      \
 788 {                                                                       \
 789         return show_pwm_auto_pwm_min(dev, buf, offset - 1);             \
 790 }                                                                       \
 791 static ssize_t set_pwm##offset##_auto_pwm_min (struct device *dev,      \
 792         const char *buf, size_t count)                                  \
 793 {                                                                       \
 794         return set_pwm_auto_pwm_min(dev, buf, count, offset - 1);       \
 795 }                                                                       \
 796 static ssize_t show_pwm##offset##_auto_pwm_minctl (struct device *dev,  \
 797         char *buf)                                                      \
 798 {                                                                       \
 799         return show_pwm_auto_pwm_minctl(dev, buf, offset - 1);          \
 800 }                                                                       \
 801 static ssize_t set_pwm##offset##_auto_pwm_minctl (struct device *dev,   \
 802         const char *buf, size_t count)                                  \
 803 {                                                                       \
 804         return set_pwm_auto_pwm_minctl(dev, buf, count, offset - 1);    \
 805 }                                                                       \
 806 static ssize_t show_pwm##offset##_auto_pwm_freq (struct device *dev,    \
 807         char *buf)                                                      \
 808 {                                                                       \
 809         return show_pwm_auto_pwm_freq(dev, buf, offset - 1);            \
 810 }                                                                       \
 811 static ssize_t set_pwm##offset##_auto_pwm_freq(struct device *dev,      \
 812         const char *buf, size_t count)                                  \
 813 {                                                                       \
 814         return set_pwm_auto_pwm_freq(dev, buf, count, offset - 1);      \
 815 }                                                                       \
 816 static DEVICE_ATTR(pwm##offset##_auto_channels, S_IRUGO | S_IWUSR,      \
 817                 show_pwm##offset##_auto_channels,                       \
 818                 set_pwm##offset##_auto_channels);                       \
 819 static DEVICE_ATTR(pwm##offset##_auto_pwm_min, S_IRUGO | S_IWUSR,       \
 820                 show_pwm##offset##_auto_pwm_min,                        \
 821                 set_pwm##offset##_auto_pwm_min);                        \
 822 static DEVICE_ATTR(pwm##offset##_auto_pwm_minctl, S_IRUGO | S_IWUSR,    \
 823                 show_pwm##offset##_auto_pwm_minctl,                     \
 824                 set_pwm##offset##_auto_pwm_minctl);                     \
 825 static DEVICE_ATTR(pwm##offset##_auto_pwm_freq, S_IRUGO | S_IWUSR,      \
 826                 show_pwm##offset##_auto_pwm_freq,                       \
 827                 set_pwm##offset##_auto_pwm_freq);
 828 pwm_auto(1);
 829 pwm_auto(2);
 830 pwm_auto(3);
 831
 832 /* Temperature settings for automatic PWM control */
 833
 834 static ssize_t show_temp_auto_temp_off(struct device *dev, char *buf, int nr)
 835 {
 836         struct lm85_data *data = lm85_update_device(dev);
 837         return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) -
 838                 HYST_FROM_REG(data->zone[nr].hyst));
 839 }
 840 static ssize_t set_temp_auto_temp_off(struct device *dev, const char *buf,
 841         size_t count, int nr)
 842 {
 843         struct i2c_client *client = to_i2c_client(dev);
 844         struct lm85_data *data = i2c_get_clientdata(client);
 845         int    min, val;
 846
 847         down(&data->update_lock);
 848         val = simple_strtol(buf, NULL, 10);
 849         min = TEMP_FROM_REG(data->zone[nr].limit);
 850         data->zone[nr].off_desired = TEMP_TO_REG(val);
 851         data->zone[nr].hyst = HYST_TO_REG(min - val);
 852         if ( nr == 0 || nr == 1 ) {
 853                 lm85_write_value(client, LM85_REG_AFAN_HYST1,
 854                         (data->zone[0].hyst << 4)
 855                         | data->zone[1].hyst
 856                         );
 857         } else {
 858                 lm85_write_value(client, LM85_REG_AFAN_HYST2,
 859                         (data->zone[2].hyst << 4)
 860                 );
 861         }
 862         up(&data->update_lock);
 863         return count;
 864 }
 865 static ssize_t show_temp_auto_temp_min(struct device *dev, char *buf, int nr)
 866 {
 867         struct lm85_data *data = lm85_update_device(dev);
 868         return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) );
 869 }
 870 static ssize_t set_temp_auto_temp_min(struct device *dev, const char *buf,
 871         size_t count, int nr)
 872 {
 873         struct i2c_client *client = to_i2c_client(dev);
 874         struct lm85_data *data = i2c_get_clientdata(client);
 875         int    val;
 876
 877         down(&data->update_lock);
 878         val = simple_strtol(buf, NULL, 10);
 879         data->zone[nr].limit = TEMP_TO_REG(val);
 880         lm85_write_value(client, LM85_REG_AFAN_LIMIT(nr),
 881                 data->zone[nr].limit);
 882
 883 /* Update temp_auto_max and temp_auto_range */
 884         data->zone[nr].range = RANGE_TO_REG(
 885                 TEMP_FROM_REG(data->zone[nr].max_desired) -
 886                 TEMP_FROM_REG(data->zone[nr].limit));
 887         lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
 888                 ((data->zone[nr].range & 0x0f) << 4)
 889                 | (data->autofan[nr].freq & 0x07));
 890
 891 /* Update temp_auto_hyst and temp_auto_off */
 892         data->zone[nr].hyst = HYST_TO_REG(TEMP_FROM_REG(
 893                 data->zone[nr].limit) - TEMP_FROM_REG(
 894                 data->zone[nr].off_desired));
 895         if ( nr == 0 || nr == 1 ) {
 896                 lm85_write_value(client, LM85_REG_AFAN_HYST1,
 897                         (data->zone[0].hyst << 4)
 898                         | data->zone[1].hyst
 899                         );
 900         } else {
 901                 lm85_write_value(client, LM85_REG_AFAN_HYST2,
 902                         (data->zone[2].hyst << 4)
 903                 );
 904         }
 905         up(&data->update_lock);
 906         return count;
 907 }
 908 static ssize_t show_temp_auto_temp_max(struct device *dev, char *buf, int nr)
 909 {
 910         struct lm85_data *data = lm85_update_device(dev);
 911         return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) +
 912                 RANGE_FROM_REG(data->zone[nr].range));
 913 }
 914 static ssize_t set_temp_auto_temp_max(struct device *dev, const char *buf,
 915         size_t count, int nr)
 916 {
 917         struct i2c_client *client = to_i2c_client(dev);
 918         struct lm85_data *data = i2c_get_clientdata(client);
 919         int    min, val;
 920
 921         down(&data->update_lock);
 922         min = TEMP_FROM_REG(data->zone[nr].limit);
 923         val = simple_strtol(buf, NULL, 10);
 924         data->zone[nr].max_desired = TEMP_TO_REG(val);
 925         data->zone[nr].range = RANGE_TO_REG(
 926                 val - min);
 927         lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
 928                 ((data->zone[nr].range & 0x0f) << 4)
 929                 | (data->autofan[nr].freq & 0x07));
 930         up(&data->update_lock);
 931         return count;
 932 }
 933 static ssize_t show_temp_auto_temp_crit(struct device *dev, char *buf, int nr)
 934 {
 935         struct lm85_data *data = lm85_update_device(dev);
 936         return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].critical));
 937 }
 938 static ssize_t set_temp_auto_temp_crit(struct device *dev, const char *buf,
 939                 size_t count, int nr)
 940 {
 941         struct i2c_client *client = to_i2c_client(dev);
 942         struct lm85_data *data = i2c_get_clientdata(client);
 943         int     val;
 944
 945         down(&data->update_lock);
 946         val = simple_strtol(buf, NULL, 10);
 947         data->zone[nr].critical = TEMP_TO_REG(val);
 948         lm85_write_value(client, LM85_REG_AFAN_CRITICAL(nr),
 949                 data->zone[nr].critical);
 950         up(&data->update_lock);
 951         return count;
 952 }
 953 #define temp_auto(offset)                                               \
 954 static ssize_t show_temp##offset##_auto_temp_off (struct device *dev,   \
 955         char *buf)                                                      \
 956 {                                                                       \
 957         return show_temp_auto_temp_off(dev, buf, offset - 1);           \
 958 }                                                                       \
 959 static ssize_t set_temp##offset##_auto_temp_off (struct device *dev,    \
 960         const char *buf, size_t count)                                  \
 961 {                                                                       \
 962         return set_temp_auto_temp_off(dev, buf, count, offset - 1);     \
 963 }                                                                       \
 964 static ssize_t show_temp##offset##_auto_temp_min (struct device *dev,   \
 965         char *buf)                                                      \
 966 {                                                                       \
 967         return show_temp_auto_temp_min(dev, buf, offset - 1);           \
 968 }                                                                       \
 969 static ssize_t set_temp##offset##_auto_temp_min (struct device *dev,    \
 970         const char *buf, size_t count)                                  \
 971 {                                                                       \
 972         return set_temp_auto_temp_min(dev, buf, count, offset - 1);     \
 973 }                                                                       \
 974 static ssize_t show_temp##offset##_auto_temp_max (struct device *dev,   \
 975         char *buf)                                                      \
 976 {                                                                       \
 977         return show_temp_auto_temp_max(dev, buf, offset - 1);           \
 978 }                                                                       \
 979 static ssize_t set_temp##offset##_auto_temp_max (struct device *dev,    \
 980         const char *buf, size_t count)                                  \
 981 {                                                                       \
 982         return set_temp_auto_temp_max(dev, buf, count, offset - 1);     \
 983 }                                                                       \
 984 static ssize_t show_temp##offset##_auto_temp_crit (struct device *dev,  \
 985         char *buf)                                                      \
 986 {                                                                       \
 987         return show_temp_auto_temp_crit(dev, buf, offset - 1);          \
 988 }                                                                       \
 989 static ssize_t set_temp##offset##_auto_temp_crit (struct device *dev,   \
 990         const char *buf, size_t count)                                  \
 991 {                                                                       \
 992         return set_temp_auto_temp_crit(dev, buf, count, offset - 1);    \
 993 }                                                                       \
 994 static DEVICE_ATTR(temp##offset##_auto_temp_off, S_IRUGO | S_IWUSR,     \
 995                 show_temp##offset##_auto_temp_off,                      \
 996                 set_temp##offset##_auto_temp_off);                      \
 997 static DEVICE_ATTR(temp##offset##_auto_temp_min, S_IRUGO | S_IWUSR,     \
 998                 show_temp##offset##_auto_temp_min,                      \
 999                 set_temp##offset##_auto_temp_min);                      \
1000 static DEVICE_ATTR(temp##offset##_auto_temp_max, S_IRUGO | S_IWUSR,     \
1001                 show_temp##offset##_auto_temp_max,                      \
1002                 set_temp##offset##_auto_temp_max);                      \
1003 static DEVICE_ATTR(temp##offset##_auto_temp_crit, S_IRUGO | S_IWUSR,    \
1004                 show_temp##offset##_auto_temp_crit,                     \
1005                 set_temp##offset##_auto_temp_crit);
1006 temp_auto(1);
1007 temp_auto(2);
1008 temp_auto(3);
1009
1010 int lm85_attach_adapter(struct i2c_adapter *adapter)
1011 {
1012         if (!(adapter->class & I2C_CLASS_HWMON))
1013                 return 0;
1014         return i2c_detect(adapter, &addr_data, lm85_detect);
1015 }
1016
1017 int lm85_detect(struct i2c_adapter *adapter, int address,
1018                 int kind)
1019 {
1020         int company, verstep ;
1021         struct i2c_client *new_client = NULL;
1022         struct lm85_data *data;
1023         int err = 0;
1024         const char *type_name = "";
1025
1026         if (i2c_is_isa_adapter(adapter)) {
1027                 /* This chip has no ISA interface */
1028                 goto ERROR0 ;
1029         };
1030
1031         if (!i2c_check_functionality(adapter,
1032                                         I2C_FUNC_SMBUS_BYTE_DATA)) {
1033                 /* We need to be able to do byte I/O */
1034                 goto ERROR0 ;
1035         };
1036
1037         /* OK. For now, we presume we have a valid client. We now create the
1038            client structure, even though we cannot fill it completely yet.
1039            But it allows us to access lm85_{read,write}_value. */
1040
1041         if (!(data = kmalloc(sizeof(struct lm85_data), GFP_KERNEL))) {
1042                 err = -ENOMEM;
1043                 goto ERROR0;
1044         }
1045         memset(data, 0, sizeof(struct lm85_data));
1046
1047         new_client = &data->client;
1048         i2c_set_clientdata(new_client, data);
1049         new_client->addr = address;
1050         new_client->adapter = adapter;
1051         new_client->driver = &lm85_driver;
1052         new_client->flags = 0;
1053
1054         /* Now, we do the remaining detection. */
1055
1056         company = lm85_read_value(new_client, LM85_REG_COMPANY);
1057         verstep = lm85_read_value(new_client, LM85_REG_VERSTEP);
1058
1059         dev_dbg(&adapter->dev, "Detecting device at %d,0x%02x with"
1060                 " COMPANY: 0x%02x and VERSTEP: 0x%02x\n",
1061                 i2c_adapter_id(new_client->adapter), new_client->addr,
1062                 company, verstep);
1063
1064         /* If auto-detecting, Determine the chip type. */
1065         if (kind <= 0) {
1066                 dev_dbg(&adapter->dev, "Autodetecting device at %d,0x%02x ...\n",
1067                         i2c_adapter_id(adapter), address );
1068                 if( company == LM85_COMPANY_NATIONAL
1069                     && verstep == LM85_VERSTEP_LM85C ) {
1070                         kind = lm85c ;
1071                 } else if( company == LM85_COMPANY_NATIONAL
1072                     && verstep == LM85_VERSTEP_LM85B ) {
1073                         kind = lm85b ;
1074                 } else if( company == LM85_COMPANY_NATIONAL
1075                     && (verstep & 0xf0) == LM85_VERSTEP_GENERIC ) {
1076                         dev_err(&adapter->dev, "Unrecognized version/stepping 0x%02x"
1077                                 " Defaulting to LM85.\n", verstep);
1078                         kind = any_chip ;
1079                 } else if( company == LM85_COMPANY_ANALOG_DEV
1080                     && verstep == LM85_VERSTEP_ADM1027 ) {
1081                         kind = adm1027 ;
1082                 } else if( company == LM85_COMPANY_ANALOG_DEV
1083                     && verstep == LM85_VERSTEP_ADT7463 ) {
1084                         kind = adt7463 ;
1085                 } else if( company == LM85_COMPANY_ANALOG_DEV
1086                     && (verstep & 0xf0) == LM85_VERSTEP_GENERIC ) {
1087                         dev_err(&adapter->dev, "Unrecognized version/stepping 0x%02x"
1088                                 " Defaulting to ADM1027.\n", verstep);
1089                         kind = adm1027 ;
1090                 } else if( kind == 0 && (verstep & 0xf0) == 0x60) {
1091                         dev_err(&adapter->dev, "Generic LM85 Version 6 detected\n");
1092                         /* Leave kind as "any_chip" */
1093                 } else {
1094                         dev_dbg(&adapter->dev, "Autodetection failed\n");
1095                         /* Not an LM85 ... */
1096                         if( kind == 0 ) {  /* User used force=x,y */
1097                                 dev_err(&adapter->dev, "Generic LM85 Version 6 not"
1098                                         " found at %d,0x%02x. Try force_lm85c.\n",
1099                                         i2c_adapter_id(adapter), address );
1100                         }
1101                         err = 0 ;
1102                         goto ERROR1;
1103                 }
1104         }
1105
1106         /* Fill in the chip specific driver values */
1107         if ( kind == any_chip ) {
1108                 type_name = "lm85";
1109         } else if ( kind == lm85b ) {
1110                 type_name = "lm85b";
1111         } else if ( kind == lm85c ) {
1112                 type_name = "lm85c";
1113         } else if ( kind == adm1027 ) {
1114                 type_name = "adm1027";
1115         } else if ( kind == adt7463 ) {
1116                 type_name = "adt7463";
1117         }
1118         strlcpy(new_client->name, type_name, I2C_NAME_SIZE);
1119
1120         /* Fill in the remaining client fields */
1121         new_client->id = lm85_id++;
1122         data->type = kind;
1123         data->valid = 0;
1124         init_MUTEX(&data->update_lock);
1125
1126         dev_dbg(&adapter->dev, "Assigning ID %d to %s at %d,0x%02x\n",
1127                 new_client->id, new_client->name,
1128                 i2c_adapter_id(new_client->adapter),
1129                 new_client->addr);
1130
1131         /* Tell the I2C layer a new client has arrived */
1132         if ((err = i2c_attach_client(new_client)))
1133                 goto ERROR1;
1134
1135         /* Set the VRM version */
1136         data->vrm = i2c_which_vrm();
1137
1138         /* Initialize the LM85 chip */
1139         lm85_init_client(new_client);
1140
1141         /* Register sysfs hooks */
1142         device_create_file(&new_client->dev, &dev_attr_fan1_input);
1143         device_create_file(&new_client->dev, &dev_attr_fan2_input);
1144         device_create_file(&new_client->dev, &dev_attr_fan3_input);
1145         device_create_file(&new_client->dev, &dev_attr_fan4_input);
1146         device_create_file(&new_client->dev, &dev_attr_fan1_min);
1147         device_create_file(&new_client->dev, &dev_attr_fan2_min);
1148         device_create_file(&new_client->dev, &dev_attr_fan3_min);
1149         device_create_file(&new_client->dev, &dev_attr_fan4_min);
1150         device_create_file(&new_client->dev, &dev_attr_pwm1);
1151         device_create_file(&new_client->dev, &dev_attr_pwm2);
1152         device_create_file(&new_client->dev, &dev_attr_pwm3);
1153         device_create_file(&new_client->dev, &dev_attr_pwm1_enable);
1154         device_create_file(&new_client->dev, &dev_attr_pwm2_enable);
1155         device_create_file(&new_client->dev, &dev_attr_pwm3_enable);
1156         device_create_file(&new_client->dev, &dev_attr_in0_input);
1157         device_create_file(&new_client->dev, &dev_attr_in1_input);
1158         device_create_file(&new_client->dev, &dev_attr_in2_input);
1159         device_create_file(&new_client->dev, &dev_attr_in3_input);
1160         device_create_file(&new_client->dev, &dev_attr_in4_input);
1161         device_create_file(&new_client->dev, &dev_attr_in0_min);
1162         device_create_file(&new_client->dev, &dev_attr_in1_min);
1163         device_create_file(&new_client->dev, &dev_attr_in2_min);
1164         device_create_file(&new_client->dev, &dev_attr_in3_min);
1165         device_create_file(&new_client->dev, &dev_attr_in4_min);
1166         device_create_file(&new_client->dev, &dev_attr_in0_max);
1167         device_create_file(&new_client->dev, &dev_attr_in1_max);
1168         device_create_file(&new_client->dev, &dev_attr_in2_max);
1169         device_create_file(&new_client->dev, &dev_attr_in3_max);
1170         device_create_file(&new_client->dev, &dev_attr_in4_max);
1171         device_create_file(&new_client->dev, &dev_attr_temp1_input);
1172         device_create_file(&new_client->dev, &dev_attr_temp2_input);
1173         device_create_file(&new_client->dev, &dev_attr_temp3_input);
1174         device_create_file(&new_client->dev, &dev_attr_temp1_min);
1175         device_create_file(&new_client->dev, &dev_attr_temp2_min);
1176         device_create_file(&new_client->dev, &dev_attr_temp3_min);
1177         device_create_file(&new_client->dev, &dev_attr_temp1_max);
1178         device_create_file(&new_client->dev, &dev_attr_temp2_max);
1179         device_create_file(&new_client->dev, &dev_attr_temp3_max);
1180         device_create_file(&new_client->dev, &dev_attr_vrm);
1181         device_create_file(&new_client->dev, &dev_attr_cpu0_vid);
1182         device_create_file(&new_client->dev, &dev_attr_alarms);
1183         device_create_file(&new_client->dev, &dev_attr_pwm1_auto_channels);
1184         device_create_file(&new_client->dev, &dev_attr_pwm2_auto_channels);
1185         device_create_file(&new_client->dev, &dev_attr_pwm3_auto_channels);
1186         device_create_file(&new_client->dev, &dev_attr_pwm1_auto_pwm_min);
1187         device_create_file(&new_client->dev, &dev_attr_pwm2_auto_pwm_min);
1188         device_create_file(&new_client->dev, &dev_attr_pwm3_auto_pwm_min);
1189         device_create_file(&new_client->dev, &dev_attr_pwm1_auto_pwm_minctl);
1190         device_create_file(&new_client->dev, &dev_attr_pwm2_auto_pwm_minctl);
1191         device_create_file(&new_client->dev, &dev_attr_pwm3_auto_pwm_minctl);
1192         device_create_file(&new_client->dev, &dev_attr_pwm1_auto_pwm_freq);
1193         device_create_file(&new_client->dev, &dev_attr_pwm2_auto_pwm_freq);
1194         device_create_file(&new_client->dev, &dev_attr_pwm3_auto_pwm_freq);
1195         device_create_file(&new_client->dev, &dev_attr_temp1_auto_temp_off);
1196         device_create_file(&new_client->dev, &dev_attr_temp2_auto_temp_off);
1197         device_create_file(&new_client->dev, &dev_attr_temp3_auto_temp_off);
1198         device_create_file(&new_client->dev, &dev_attr_temp1_auto_temp_min);
1199         device_create_file(&new_client->dev, &dev_attr_temp2_auto_temp_min);
1200         device_create_file(&new_client->dev, &dev_attr_temp3_auto_temp_min);
1201         device_create_file(&new_client->dev, &dev_attr_temp1_auto_temp_max);
1202         device_create_file(&new_client->dev, &dev_attr_temp2_auto_temp_max);
1203         device_create_file(&new_client->dev, &dev_attr_temp3_auto_temp_max);
1204         device_create_file(&new_client->dev, &dev_attr_temp1_auto_temp_crit);
1205         device_create_file(&new_client->dev, &dev_attr_temp2_auto_temp_crit);
1206         device_create_file(&new_client->dev, &dev_attr_temp3_auto_temp_crit);
1207
1208         return 0;
1209
1210         /* Error out and cleanup code */
1211     ERROR1:
1212         kfree(data);
1213     ERROR0:
1214         return err;
1215 }
1216
1217 int lm85_detach_client(struct i2c_client *client)
1218 {
1219         i2c_detach_client(client);
1220         kfree(i2c_get_clientdata(client));
1221         return 0;
1222 }
1223
1224
1225 int lm85_read_value(struct i2c_client *client, u8 reg)
1226 {
1227         int res;
1228
1229         /* What size location is it? */
1230         switch( reg ) {
1231         case LM85_REG_FAN(0) :  /* Read WORD data */
1232         case LM85_REG_FAN(1) :
1233         case LM85_REG_FAN(2) :
1234         case LM85_REG_FAN(3) :
1235         case LM85_REG_FAN_MIN(0) :
1236         case LM85_REG_FAN_MIN(1) :
1237         case LM85_REG_FAN_MIN(2) :
1238         case LM85_REG_FAN_MIN(3) :
1239         case LM85_REG_ALARM1 :  /* Read both bytes at once */
1240         case ADM1027_REG_EXTEND_ADC1 :  /* Read two bytes at once */
1241                 res = i2c_smbus_read_byte_data(client, reg) & 0xff ;
1242                 res |= i2c_smbus_read_byte_data(client, reg+1) << 8 ;
1243                 break ;
1244         case ADT7463_REG_TMIN_CTL1 :  /* Read WORD MSB, LSB */
1245                 res = i2c_smbus_read_byte_data(client, reg) << 8 ;
1246                 res |= i2c_smbus_read_byte_data(client, reg+1) & 0xff ;
1247                 break ;
1248         default:        /* Read BYTE data */
1249                 res = i2c_smbus_read_byte_data(client, reg);
1250                 break ;
1251         }
1252
1253         return res ;
1254 }
1255
1256 int lm85_write_value(struct i2c_client *client, u8 reg, int value)
1257 {
1258         int res ;
1259
1260         switch( reg ) {
1261         case LM85_REG_FAN(0) :  /* Write 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         /* NOTE: ALARM is read only, so not included here */
1270                 res = i2c_smbus_write_byte_data(client, reg, value & 0xff) ;
1271                 res |= i2c_smbus_write_byte_data(client, reg+1, (value>>8) & 0xff) ;
1272                 break ;
1273         case ADT7463_REG_TMIN_CTL1 :  /* Write WORD MSB, LSB */
1274                 res = i2c_smbus_write_byte_data(client, reg, (value>>8) & 0xff);
1275                 res |= i2c_smbus_write_byte_data(client, reg+1, value & 0xff) ;
1276                 break ;
1277         default:        /* Write BYTE data */
1278                 res = i2c_smbus_write_byte_data(client, reg, value);
1279                 break ;
1280         }
1281
1282         return res ;
1283 }
1284
1285 void lm85_init_client(struct i2c_client *client)
1286 {
1287         int value;
1288         struct lm85_data *data = i2c_get_clientdata(client);
1289
1290         dev_dbg(&client->dev, "Initializing device\n");
1291
1292         /* Warn if part was not "READY" */
1293         value = lm85_read_value(client, LM85_REG_CONFIG);
1294         dev_dbg(&client->dev, "LM85_REG_CONFIG is: 0x%02x\n", value);
1295         if( value & 0x02 ) {
1296                 dev_err(&client->dev, "Client (%d,0x%02x) config is locked.\n",
1297                             i2c_adapter_id(client->adapter), client->addr );
1298         };
1299         if( ! (value & 0x04) ) {
1300                 dev_err(&client->dev, "Client (%d,0x%02x) is not ready.\n",
1301                             i2c_adapter_id(client->adapter), client->addr );
1302         };
1303         if( value & 0x10
1304             && ( data->type == adm1027
1305                 || data->type == adt7463 ) ) {
1306                 dev_err(&client->dev, "Client (%d,0x%02x) VxI mode is set.  "
1307                         "Please report this to the lm85 maintainer.\n",
1308                             i2c_adapter_id(client->adapter), client->addr );
1309         };
1310
1311         /* WE INTENTIONALLY make no changes to the limits,
1312          *   offsets, pwms, fans and zones.  If they were
1313          *   configured, we don't want to mess with them.
1314          *   If they weren't, the default is 100% PWM, no
1315          *   control and will suffice until 'sensors -s'
1316          *   can be run by the user.
1317          */
1318
1319         /* Start monitoring */
1320         value = lm85_read_value(client, LM85_REG_CONFIG);
1321         /* Try to clear LOCK, Set START, save everything else */
1322         value = (value & ~ 0x02) | 0x01 ;
1323         dev_dbg(&client->dev, "Setting CONFIG to: 0x%02x\n", value);
1324         lm85_write_value(client, LM85_REG_CONFIG, value);
1325 }
1326
1327 static struct lm85_data *lm85_update_device(struct device *dev)
1328 {
1329         struct i2c_client *client = to_i2c_client(dev);
1330         struct lm85_data *data = i2c_get_clientdata(client);
1331         int i;
1332
1333         down(&data->update_lock);
1334
1335         if ( !data->valid ||
1336              (jiffies - data->last_reading > LM85_DATA_INTERVAL ) ) {
1337                 /* Things that change quickly */
1338                 dev_dbg(&client->dev, "Reading sensor values\n");
1339
1340                 /* Have to read extended bits first to "freeze" the
1341                  * more significant bits that are read later.
1342                  */
1343                 if ( (data->type == adm1027) || (data->type == adt7463) ) {
1344                         data->extend_adc =
1345                             lm85_read_value(client, ADM1027_REG_EXTEND_ADC1);
1346                 }
1347
1348                 for (i = 0; i <= 4; ++i) {
1349                         data->in[i] =
1350                             lm85_read_value(client, LM85_REG_IN(i));
1351                 }
1352
1353                 for (i = 0; i <= 3; ++i) {
1354                         data->fan[i] =
1355                             lm85_read_value(client, LM85_REG_FAN(i));
1356                 }
1357
1358                 for (i = 0; i <= 2; ++i) {
1359                         data->temp[i] =
1360                             lm85_read_value(client, LM85_REG_TEMP(i));
1361                 }
1362
1363                 for (i = 0; i <= 2; ++i) {
1364                         data->pwm[i] =
1365                             lm85_read_value(client, LM85_REG_PWM(i));
1366                 }
1367
1368                 if ( data->type == adt7463 ) {
1369                         if( data->therm_total < ULONG_MAX - 256 ) {
1370                             data->therm_total +=
1371                                 lm85_read_value(client, ADT7463_REG_THERM );
1372                         }
1373                 }
1374
1375                 data->alarms = lm85_read_value(client, LM85_REG_ALARM1);
1376
1377                 data->last_reading = jiffies ;
1378         };  /* last_reading */
1379
1380         if ( !data->valid ||
1381              (jiffies - data->last_config > LM85_CONFIG_INTERVAL) ) {
1382                 /* Things that don't change often */
1383                 dev_dbg(&client->dev, "Reading config values\n");
1384
1385                 for (i = 0; i <= 4; ++i) {
1386                         data->in_min[i] =
1387                             lm85_read_value(client, LM85_REG_IN_MIN(i));
1388                         data->in_max[i] =
1389                             lm85_read_value(client, LM85_REG_IN_MAX(i));
1390                 }
1391
1392                 for (i = 0; i <= 3; ++i) {
1393                         data->fan_min[i] =
1394                             lm85_read_value(client, LM85_REG_FAN_MIN(i));
1395                 }
1396
1397                 for (i = 0; i <= 2; ++i) {
1398                         data->temp_min[i] =
1399                             lm85_read_value(client, LM85_REG_TEMP_MIN(i));
1400                         data->temp_max[i] =
1401                             lm85_read_value(client, LM85_REG_TEMP_MAX(i));
1402                 }
1403
1404                 data->vid = lm85_read_value(client, LM85_REG_VID);
1405
1406                 for (i = 0; i <= 2; ++i) {
1407                         int val ;
1408                         data->autofan[i].config =
1409                             lm85_read_value(client, LM85_REG_AFAN_CONFIG(i));
1410                         val = lm85_read_value(client, LM85_REG_AFAN_RANGE(i));
1411                         data->autofan[i].freq = val & 0x07 ;
1412                         data->zone[i].range = (val >> 4) & 0x0f ;
1413                         data->autofan[i].min_pwm =
1414                             lm85_read_value(client, LM85_REG_AFAN_MINPWM(i));
1415                         data->zone[i].limit =
1416                             lm85_read_value(client, LM85_REG_AFAN_LIMIT(i));
1417                         data->zone[i].critical =
1418                             lm85_read_value(client, LM85_REG_AFAN_CRITICAL(i));
1419                 }
1420
1421                 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE1);
1422                 data->smooth[0] = i & 0x0f ;
1423                 data->syncpwm3 = i & 0x10 ;  /* Save PWM3 config */
1424                 data->autofan[0].min_off = (i & 0x20) != 0 ;
1425                 data->autofan[1].min_off = (i & 0x40) != 0 ;
1426                 data->autofan[2].min_off = (i & 0x80) != 0 ;
1427                 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE2);
1428                 data->smooth[1] = (i>>4) & 0x0f ;
1429                 data->smooth[2] = i & 0x0f ;
1430
1431                 i = lm85_read_value(client, LM85_REG_AFAN_HYST1);
1432                 data->zone[0].hyst = (i>>4) & 0x0f ;
1433                 data->zone[1].hyst = i & 0x0f ;
1434
1435                 i = lm85_read_value(client, LM85_REG_AFAN_HYST2);
1436                 data->zone[2].hyst = (i>>4) & 0x0f ;
1437
1438                 if ( (data->type == lm85b) || (data->type == lm85c) ) {
1439                         data->tach_mode = lm85_read_value(client,
1440                                 LM85_REG_TACH_MODE );
1441                         data->spinup_ctl = lm85_read_value(client,
1442                                 LM85_REG_SPINUP_CTL );
1443                 } else if ( (data->type == adt7463) || (data->type == adm1027) ) {
1444                         if ( data->type == adt7463 ) {
1445                                 for (i = 0; i <= 2; ++i) {
1446                                     data->oppoint[i] = lm85_read_value(client,
1447                                         ADT7463_REG_OPPOINT(i) );
1448                                 }
1449                                 data->tmin_ctl = lm85_read_value(client,
1450                                         ADT7463_REG_TMIN_CTL1 );
1451                                 data->therm_limit = lm85_read_value(client,
1452                                         ADT7463_REG_THERM_LIMIT );
1453                         }
1454                         for (i = 0; i <= 2; ++i) {
1455                             data->temp_offset[i] = lm85_read_value(client,
1456                                 ADM1027_REG_TEMP_OFFSET(i) );
1457                         }
1458                         data->tach_mode = lm85_read_value(client,
1459                                 ADM1027_REG_CONFIG3 );
1460                         data->fan_ppr = lm85_read_value(client,
1461                                 ADM1027_REG_FAN_PPR );
1462                 }
1463
1464                 data->last_config = jiffies;
1465         };  /* last_config */
1466
1467         data->valid = 1;
1468
1469         up(&data->update_lock);
1470
1471         return data;
1472 }
1473
1474
1475 static int __init sm_lm85_init(void)
1476 {
1477         return i2c_add_driver(&lm85_driver);
1478 }
1479
1480 static void  __exit sm_lm85_exit(void)
1481 {
1482         i2c_del_driver(&lm85_driver);
1483 }
1484
1485 /* Thanks to Richard Barrington for adding the LM85 to sensors-detect.
1486  * Thanks to Margit Schubert-While <margitsw@t-online.de> for help with
1487  *     post 2.7.0 CVS changes.
1488  */
1489 MODULE_LICENSE("GPL");
1490 MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, Margit Schubert-While <margitsw@t-online.de>, Justin Thiessen <jthiessen@penguincomputing.com");
1491 MODULE_DESCRIPTION("LM85-B, LM85-C driver");
1492
1493 module_init(sm_lm85_init);
1494 module_exit(sm_lm85_exit);