drivers/hwmon/lm85.c

   1 /*
   2  * lm85.c - Part of lm_sensors, Linux kernel modules for hardware
   3  *          monitoring
   4  * Copyright (c) 1998, 1999  Frodo Looijaard <frodol@dds.nl>
   5  * Copyright (c) 2002, 2003  Philip Pokorny <ppokorny@penguincomputing.com>
   6  * Copyright (c) 2003        Margit Schubert-While <margitsw@t-online.de>
   7  * Copyright (c) 2004        Justin Thiessen <jthiessen@penguincomputing.com>
   8  * Copyright (C) 2007--2014  Jean Delvare <jdelvare@suse.de>
   9  *
  10  * Chip details at            <http://www.national.com/ds/LM/LM85.pdf>
  11  *
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License as published by
  14  * the Free Software Foundation; either version 2 of the License, or
  15  * (at your option) any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with this program; if not, write to the Free Software
  24  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  25  */
  26
  27 #include <linux/module.h>
  28 #include <linux/of_device.h>
  29 #include <linux/init.h>
  30 #include <linux/slab.h>
  31 #include <linux/jiffies.h>
  32 #include <linux/i2c.h>
  33 #include <linux/hwmon.h>
  34 #include <linux/hwmon-vid.h>
  35 #include <linux/hwmon-sysfs.h>
  36 #include <linux/err.h>
  37 #include <linux/mutex.h>
  38 #include <linux/util_macros.h>
  39
  40 /* Addresses to scan */
  41 static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
  42
  43 enum chips {
  44         lm85, lm96000,
  45         adm1027, adt7463, adt7468,
  46         emc6d100, emc6d102, emc6d103, emc6d103s
  47 };
  48
  49 /* The LM85 registers */
  50
  51 #define LM85_REG_IN(nr)                 (0x20 + (nr))
  52 #define LM85_REG_IN_MIN(nr)             (0x44 + (nr) * 2)
  53 #define LM85_REG_IN_MAX(nr)             (0x45 + (nr) * 2)
  54
  55 #define LM85_REG_TEMP(nr)               (0x25 + (nr))
  56 #define LM85_REG_TEMP_MIN(nr)           (0x4e + (nr) * 2)
  57 #define LM85_REG_TEMP_MAX(nr)           (0x4f + (nr) * 2)
  58
  59 /* Fan speeds are LSB, MSB (2 bytes) */
  60 #define LM85_REG_FAN(nr)                (0x28 + (nr) * 2)
  61 #define LM85_REG_FAN_MIN(nr)            (0x54 + (nr) * 2)
  62
  63 #define LM85_REG_PWM(nr)                (0x30 + (nr))
  64
  65 #define LM85_REG_COMPANY                0x3e
  66 #define LM85_REG_VERSTEP                0x3f
  67
  68 #define ADT7468_REG_CFG5                0x7c
  69 #define ADT7468_OFF64                   (1 << 0)
  70 #define ADT7468_HFPWM                   (1 << 1)
  71 #define IS_ADT7468_OFF64(data)          \
  72         ((data)->type == adt7468 && !((data)->cfg5 & ADT7468_OFF64))
  73 #define IS_ADT7468_HFPWM(data)          \
  74         ((data)->type == adt7468 && !((data)->cfg5 & ADT7468_HFPWM))
  75
  76 /* These are the recognized values for the above regs */
  77 #define LM85_COMPANY_NATIONAL           0x01
  78 #define LM85_COMPANY_ANALOG_DEV         0x41
  79 #define LM85_COMPANY_SMSC               0x5c
  80 #define LM85_VERSTEP_LM85C              0x60
  81 #define LM85_VERSTEP_LM85B              0x62
  82 #define LM85_VERSTEP_LM96000_1          0x68
  83 #define LM85_VERSTEP_LM96000_2          0x69
  84 #define LM85_VERSTEP_ADM1027            0x60
  85 #define LM85_VERSTEP_ADT7463            0x62
  86 #define LM85_VERSTEP_ADT7463C           0x6A
  87 #define LM85_VERSTEP_ADT7468_1          0x71
  88 #define LM85_VERSTEP_ADT7468_2          0x72
  89 #define LM85_VERSTEP_EMC6D100_A0        0x60
  90 #define LM85_VERSTEP_EMC6D100_A1        0x61
  91 #define LM85_VERSTEP_EMC6D102           0x65
  92 #define LM85_VERSTEP_EMC6D103_A0        0x68
  93 #define LM85_VERSTEP_EMC6D103_A1        0x69
  94 #define LM85_VERSTEP_EMC6D103S          0x6A    /* Also known as EMC6D103:A2 */
  95
  96 #define LM85_REG_CONFIG                 0x40
  97
  98 #define LM85_REG_ALARM1                 0x41
  99 #define LM85_REG_ALARM2                 0x42
 100
 101 #define LM85_REG_VID                    0x43
 102
 103 /* Automated FAN control */
 104 #define LM85_REG_AFAN_CONFIG(nr)        (0x5c + (nr))
 105 #define LM85_REG_AFAN_RANGE(nr)         (0x5f + (nr))
 106 #define LM85_REG_AFAN_SPIKE1            0x62
 107 #define LM85_REG_AFAN_MINPWM(nr)        (0x64 + (nr))
 108 #define LM85_REG_AFAN_LIMIT(nr)         (0x67 + (nr))
 109 #define LM85_REG_AFAN_CRITICAL(nr)      (0x6a + (nr))
 110 #define LM85_REG_AFAN_HYST1             0x6d
 111 #define LM85_REG_AFAN_HYST2             0x6e
 112
 113 #define ADM1027_REG_EXTEND_ADC1         0x76
 114 #define ADM1027_REG_EXTEND_ADC2         0x77
 115
 116 #define EMC6D100_REG_ALARM3             0x7d
 117 /* IN5, IN6 and IN7 */
 118 #define EMC6D100_REG_IN(nr)             (0x70 + ((nr) - 5))
 119 #define EMC6D100_REG_IN_MIN(nr)         (0x73 + ((nr) - 5) * 2)
 120 #define EMC6D100_REG_IN_MAX(nr)         (0x74 + ((nr) - 5) * 2)
 121 #define EMC6D102_REG_EXTEND_ADC1        0x85
 122 #define EMC6D102_REG_EXTEND_ADC2        0x86
 123 #define EMC6D102_REG_EXTEND_ADC3        0x87
 124 #define EMC6D102_REG_EXTEND_ADC4        0x88
 125
 126 /*
 127  * Conversions. Rounding and limit checking is only done on the TO_REG
 128  * variants. Note that you should be a bit careful with which arguments
 129  * these macros are called: arguments may be evaluated more than once.
 130  */
 131
 132 /* IN are scaled according to built-in resistors */
 133 static const int lm85_scaling[] = {  /* .001 Volts */
 134         2500, 2250, 3300, 5000, 12000,
 135         3300, 1500, 1800 /*EMC6D100*/
 136 };
 137 #define SCALE(val, from, to)    (((val) * (to) + ((from) / 2)) / (from))
 138
 139 #define INS_TO_REG(n, val)      \
 140                 SCALE(clamp_val(val, 0, 255 * lm85_scaling[n] / 192), \
 141                       lm85_scaling[n], 192)
 142
 143 #define INSEXT_FROM_REG(n, val, ext)    \
 144                 SCALE(((val) << 4) + (ext), 192 << 4, lm85_scaling[n])
 145
 146 #define INS_FROM_REG(n, val)    SCALE((val), 192, lm85_scaling[n])
 147
 148 /* FAN speed is measured using 90kHz clock */
 149 static inline u16 FAN_TO_REG(unsigned long val)
 150 {
 151         if (!val)
 152                 return 0xffff;
 153         return clamp_val(5400000 / val, 1, 0xfffe);
 154 }
 155 #define FAN_FROM_REG(val)       ((val) == 0 ? -1 : (val) == 0xffff ? 0 : \
 156                                  5400000 / (val))
 157
 158 /* Temperature is reported in .001 degC increments */
 159 #define TEMP_TO_REG(val)        \
 160                 DIV_ROUND_CLOSEST(clamp_val((val), -127000, 127000), 1000)
 161 #define TEMPEXT_FROM_REG(val, ext)      \
 162                 SCALE(((val) << 4) + (ext), 16, 1000)
 163 #define TEMP_FROM_REG(val)      ((val) * 1000)
 164
 165 #define PWM_TO_REG(val)                 clamp_val(val, 0, 255)
 166 #define PWM_FROM_REG(val)               (val)
 167
 168 /*
 169  * ZONEs have the following parameters:
 170  *    Limit (low) temp,           1. degC
 171  *    Hysteresis (below limit),   1. degC (0-15)
 172  *    Range of speed control,     .1 degC (2-80)
 173  *    Critical (high) temp,       1. degC
 174  *
 175  * FAN PWMs have the following parameters:
 176  *    Reference Zone,                 1, 2, 3, etc.
 177  *    Spinup time,                    .05 sec
 178  *    PWM value at limit/low temp,    1 count
 179  *    PWM Frequency,                  1. Hz
 180  *    PWM is Min or OFF below limit,  flag
 181  *    Invert PWM output,              flag
 182  *
 183  * Some chips filter the temp, others the fan.
 184  *    Filter constant (or disabled)   .1 seconds
 185  */
 186
 187 /* These are the zone temperature range encodings in .001 degree C */
 188 static const int lm85_range_map[] = {
 189         2000, 2500, 3300, 4000, 5000, 6600, 8000, 10000,
 190         13300, 16000, 20000, 26600, 32000, 40000, 53300, 80000
 191 };
 192
 193 static int RANGE_TO_REG(long range)
 194 {
 195         return find_closest(range, lm85_range_map, ARRAY_SIZE(lm85_range_map));
 196 }
 197 #define RANGE_FROM_REG(val)     lm85_range_map[(val) & 0x0f]
 198
 199 /* These are the PWM frequency encodings */
 200 static const int lm85_freq_map[] = { /* 1 Hz */
 201         10, 15, 23, 30, 38, 47, 61, 94
 202 };
 203
 204 static const int lm96000_freq_map[] = { /* 1 Hz */
 205         10, 15, 23, 30, 38, 47, 61, 94,
 206         22500, 24000, 25700, 25700, 27700, 27700, 30000, 30000
 207 };
 208
 209 static const int adm1027_freq_map[] = { /* 1 Hz */
 210         11, 15, 22, 29, 35, 44, 59, 88
 211 };
 212
 213 static int FREQ_TO_REG(const int *map,
 214                        unsigned int map_size, unsigned long freq)
 215 {
 216         return find_closest(freq, map, map_size);
 217 }
 218
 219 static int FREQ_FROM_REG(const int *map, unsigned int map_size, u8 reg)
 220 {
 221         return map[reg % map_size];
 222 }
 223
 224 /*
 225  * Since we can't use strings, I'm abusing these numbers
 226  *   to stand in for the following meanings:
 227  *      1 -- PWM responds to Zone 1
 228  *      2 -- PWM responds to Zone 2
 229  *      3 -- PWM responds to Zone 3
 230  *     23 -- PWM responds to the higher temp of Zone 2 or 3
 231  *    123 -- PWM responds to highest of Zone 1, 2, or 3
 232  *      0 -- PWM is always at 0% (ie, off)
 233  *     -1 -- PWM is always at 100%
 234  *     -2 -- PWM responds to manual control
 235  */
 236
 237 static const int lm85_zone_map[] = { 1, 2, 3, -1, 0, 23, 123, -2 };
 238 #define ZONE_FROM_REG(val)      lm85_zone_map[(val) >> 5]
 239
 240 static int ZONE_TO_REG(int zone)
 241 {
 242         int i;
 243
 244         for (i = 0; i <= 7; ++i)
 245                 if (zone == lm85_zone_map[i])
 246                         break;
 247         if (i > 7)   /* Not found. */
 248                 i = 3;  /* Always 100% */
 249         return i << 5;
 250 }
 251
 252 #define HYST_TO_REG(val)        clamp_val(((val) + 500) / 1000, 0, 15)
 253 #define HYST_FROM_REG(val)      ((val) * 1000)
 254
 255 /*
 256  * Chip sampling rates
 257  *
 258  * Some sensors are not updated more frequently than once per second
 259  *    so it doesn't make sense to read them more often than that.
 260  *    We cache the results and return the saved data if the driver
 261  *    is called again before a second has elapsed.
 262  *
 263  * Also, there is significant configuration data for this chip
 264  *    given the automatic PWM fan control that is possible.  There
 265  *    are about 47 bytes of config data to only 22 bytes of actual
 266  *    readings.  So, we keep the config data up to date in the cache
 267  *    when it is written and only sample it once every 1 *minute*
 268  */
 269 #define LM85_DATA_INTERVAL  (HZ + HZ / 2)
 270 #define LM85_CONFIG_INTERVAL  (1 * 60 * HZ)
 271
 272 /*
 273  * LM85 can automatically adjust fan speeds based on temperature
 274  * This structure encapsulates an entire Zone config.  There are
 275  * three zones (one for each temperature input) on the lm85
 276  */
 277 struct lm85_zone {
 278         s8 limit;       /* Low temp limit */
 279         u8 hyst;        /* Low limit hysteresis. (0-15) */
 280         u8 range;       /* Temp range, encoded */
 281         s8 critical;    /* "All fans ON" temp limit */
 282         u8 max_desired; /*
 283                          * Actual "max" temperature specified.  Preserved
 284                          * to prevent "drift" as other autofan control
 285                          * values change.
 286                          */
 287 };
 288
 289 struct lm85_autofan {
 290         u8 config;      /* Register value */
 291         u8 min_pwm;     /* Minimum PWM value, encoded */
 292         u8 min_off;     /* Min PWM or OFF below "limit", flag */
 293 };
 294
 295 /*
 296  * For each registered chip, we need to keep some data in memory.
 297  * The structure is dynamically allocated.
 298  */
 299 struct lm85_data {
 300         struct i2c_client *client;
 301         const struct attribute_group *groups[6];
 302         const int *freq_map;
 303         unsigned int freq_map_size;
 304
 305         enum chips type;
 306
 307         bool has_vid5;  /* true if VID5 is configured for ADT7463 or ADT7468 */
 308
 309         struct mutex update_lock;
 310         int valid;              /* !=0 if following fields are valid */
 311         unsigned long last_reading;     /* In jiffies */
 312         unsigned long last_config;      /* In jiffies */
 313
 314         u8 in[8];               /* Register value */
 315         u8 in_max[8];           /* Register value */
 316         u8 in_min[8];           /* Register value */
 317         s8 temp[3];             /* Register value */
 318         s8 temp_min[3];         /* Register value */
 319         s8 temp_max[3];         /* Register value */
 320         u16 fan[4];             /* Register value */
 321         u16 fan_min[4];         /* Register value */
 322         u8 pwm[3];              /* Register value */
 323         u8 pwm_freq[3];         /* Register encoding */
 324         u8 temp_ext[3];         /* Decoded values */
 325         u8 in_ext[8];           /* Decoded values */
 326         u8 vid;                 /* Register value */
 327         u8 vrm;                 /* VRM version */
 328         u32 alarms;             /* Register encoding, combined */
 329         u8 cfg5;                /* Config Register 5 on ADT7468 */
 330         struct lm85_autofan autofan[3];
 331         struct lm85_zone zone[3];
 332 };
 333
 334 static int lm85_read_value(struct i2c_client *client, u8 reg)
 335 {
 336         int res;
 337
 338         /* What size location is it? */
 339         switch (reg) {
 340         case LM85_REG_FAN(0):  /* Read WORD data */
 341         case LM85_REG_FAN(1):
 342         case LM85_REG_FAN(2):
 343         case LM85_REG_FAN(3):
 344         case LM85_REG_FAN_MIN(0):
 345         case LM85_REG_FAN_MIN(1):
 346         case LM85_REG_FAN_MIN(2):
 347         case LM85_REG_FAN_MIN(3):
 348         case LM85_REG_ALARM1:   /* Read both bytes at once */
 349                 res = i2c_smbus_read_byte_data(client, reg) & 0xff;
 350                 res |= i2c_smbus_read_byte_data(client, reg + 1) << 8;
 351                 break;
 352         default:        /* Read BYTE data */
 353                 res = i2c_smbus_read_byte_data(client, reg);
 354                 break;
 355         }
 356
 357         return res;
 358 }
 359
 360 static void lm85_write_value(struct i2c_client *client, u8 reg, int value)
 361 {
 362         switch (reg) {
 363         case LM85_REG_FAN(0):  /* Write WORD data */
 364         case LM85_REG_FAN(1):
 365         case LM85_REG_FAN(2):
 366         case LM85_REG_FAN(3):
 367         case LM85_REG_FAN_MIN(0):
 368         case LM85_REG_FAN_MIN(1):
 369         case LM85_REG_FAN_MIN(2):
 370         case LM85_REG_FAN_MIN(3):
 371         /* NOTE: ALARM is read only, so not included here */
 372                 i2c_smbus_write_byte_data(client, reg, value & 0xff);
 373                 i2c_smbus_write_byte_data(client, reg + 1, value >> 8);
 374                 break;
 375         default:        /* Write BYTE data */
 376                 i2c_smbus_write_byte_data(client, reg, value);
 377                 break;
 378         }
 379 }
 380
 381 static struct lm85_data *lm85_update_device(struct device *dev)
 382 {
 383         struct lm85_data *data = dev_get_drvdata(dev);
 384         struct i2c_client *client = data->client;
 385         int i;
 386
 387         mutex_lock(&data->update_lock);
 388
 389         if (!data->valid ||
 390              time_after(jiffies, data->last_reading + LM85_DATA_INTERVAL)) {
 391                 /* Things that change quickly */
 392                 dev_dbg(&client->dev, "Reading sensor values\n");
 393
 394                 /*
 395                  * Have to read extended bits first to "freeze" the
 396                  * more significant bits that are read later.
 397                  * There are 2 additional resolution bits per channel and we
 398                  * have room for 4, so we shift them to the left.
 399                  */
 400                 if (data->type == adm1027 || data->type == adt7463 ||
 401                     data->type == adt7468) {
 402                         int ext1 = lm85_read_value(client,
 403                                                    ADM1027_REG_EXTEND_ADC1);
 404                         int ext2 =  lm85_read_value(client,
 405                                                     ADM1027_REG_EXTEND_ADC2);
 406                         int val = (ext1 << 8) + ext2;
 407
 408                         for (i = 0; i <= 4; i++)
 409                                 data->in_ext[i] =
 410                                         ((val >> (i * 2)) & 0x03) << 2;
 411
 412                         for (i = 0; i <= 2; i++)
 413                                 data->temp_ext[i] =
 414                                         (val >> ((i + 4) * 2)) & 0x0c;
 415                 }
 416
 417                 data->vid = lm85_read_value(client, LM85_REG_VID);
 418
 419                 for (i = 0; i <= 3; ++i) {
 420                         data->in[i] =
 421                             lm85_read_value(client, LM85_REG_IN(i));
 422                         data->fan[i] =
 423                             lm85_read_value(client, LM85_REG_FAN(i));
 424                 }
 425
 426                 if (!data->has_vid5)
 427                         data->in[4] = lm85_read_value(client, LM85_REG_IN(4));
 428
 429                 if (data->type == adt7468)
 430                         data->cfg5 = lm85_read_value(client, ADT7468_REG_CFG5);
 431
 432                 for (i = 0; i <= 2; ++i) {
 433                         data->temp[i] =
 434                             lm85_read_value(client, LM85_REG_TEMP(i));
 435                         data->pwm[i] =
 436                             lm85_read_value(client, LM85_REG_PWM(i));
 437
 438                         if (IS_ADT7468_OFF64(data))
 439                                 data->temp[i] -= 64;
 440                 }
 441
 442                 data->alarms = lm85_read_value(client, LM85_REG_ALARM1);
 443
 444                 if (data->type == emc6d100) {
 445                         /* Three more voltage sensors */
 446                         for (i = 5; i <= 7; ++i) {
 447                                 data->in[i] = lm85_read_value(client,
 448                                                         EMC6D100_REG_IN(i));
 449                         }
 450                         /* More alarm bits */
 451                         data->alarms |= lm85_read_value(client,
 452                                                 EMC6D100_REG_ALARM3) << 16;
 453                 } else if (data->type == emc6d102 || data->type == emc6d103 ||
 454                            data->type == emc6d103s) {
 455                         /*
 456                          * Have to read LSB bits after the MSB ones because
 457                          * the reading of the MSB bits has frozen the
 458                          * LSBs (backward from the ADM1027).
 459                          */
 460                         int ext1 = lm85_read_value(client,
 461                                                    EMC6D102_REG_EXTEND_ADC1);
 462                         int ext2 = lm85_read_value(client,
 463                                                    EMC6D102_REG_EXTEND_ADC2);
 464                         int ext3 = lm85_read_value(client,
 465                                                    EMC6D102_REG_EXTEND_ADC3);
 466                         int ext4 = lm85_read_value(client,
 467                                                    EMC6D102_REG_EXTEND_ADC4);
 468                         data->in_ext[0] = ext3 & 0x0f;
 469                         data->in_ext[1] = ext4 & 0x0f;
 470                         data->in_ext[2] = ext4 >> 4;
 471                         data->in_ext[3] = ext3 >> 4;
 472                         data->in_ext[4] = ext2 >> 4;
 473
 474                         data->temp_ext[0] = ext1 & 0x0f;
 475                         data->temp_ext[1] = ext2 & 0x0f;
 476                         data->temp_ext[2] = ext1 >> 4;
 477                 }
 478
 479                 data->last_reading = jiffies;
 480         }  /* last_reading */
 481
 482         if (!data->valid ||
 483              time_after(jiffies, data->last_config + LM85_CONFIG_INTERVAL)) {
 484                 /* Things that don't change often */
 485                 dev_dbg(&client->dev, "Reading config values\n");
 486
 487                 for (i = 0; i <= 3; ++i) {
 488                         data->in_min[i] =
 489                             lm85_read_value(client, LM85_REG_IN_MIN(i));
 490                         data->in_max[i] =
 491                             lm85_read_value(client, LM85_REG_IN_MAX(i));
 492                         data->fan_min[i] =
 493                             lm85_read_value(client, LM85_REG_FAN_MIN(i));
 494                 }
 495
 496                 if (!data->has_vid5)  {
 497                         data->in_min[4] = lm85_read_value(client,
 498                                           LM85_REG_IN_MIN(4));
 499                         data->in_max[4] = lm85_read_value(client,
 500                                           LM85_REG_IN_MAX(4));
 501                 }
 502
 503                 if (data->type == emc6d100) {
 504                         for (i = 5; i <= 7; ++i) {
 505                                 data->in_min[i] = lm85_read_value(client,
 506                                                 EMC6D100_REG_IN_MIN(i));
 507                                 data->in_max[i] = lm85_read_value(client,
 508                                                 EMC6D100_REG_IN_MAX(i));
 509                         }
 510                 }
 511
 512                 for (i = 0; i <= 2; ++i) {
 513                         int val;
 514
 515                         data->temp_min[i] =
 516                             lm85_read_value(client, LM85_REG_TEMP_MIN(i));
 517                         data->temp_max[i] =
 518                             lm85_read_value(client, LM85_REG_TEMP_MAX(i));
 519
 520                         data->autofan[i].config =
 521                             lm85_read_value(client, LM85_REG_AFAN_CONFIG(i));
 522                         val = lm85_read_value(client, LM85_REG_AFAN_RANGE(i));
 523                         data->pwm_freq[i] = val % data->freq_map_size;
 524                         data->zone[i].range = val >> 4;
 525                         data->autofan[i].min_pwm =
 526                             lm85_read_value(client, LM85_REG_AFAN_MINPWM(i));
 527                         data->zone[i].limit =
 528                             lm85_read_value(client, LM85_REG_AFAN_LIMIT(i));
 529                         data->zone[i].critical =
 530                             lm85_read_value(client, LM85_REG_AFAN_CRITICAL(i));
 531
 532                         if (IS_ADT7468_OFF64(data)) {
 533                                 data->temp_min[i] -= 64;
 534                                 data->temp_max[i] -= 64;
 535                                 data->zone[i].limit -= 64;
 536                                 data->zone[i].critical -= 64;
 537                         }
 538                 }
 539
 540                 if (data->type != emc6d103s) {
 541                         i = lm85_read_value(client, LM85_REG_AFAN_SPIKE1);
 542                         data->autofan[0].min_off = (i & 0x20) != 0;
 543                         data->autofan[1].min_off = (i & 0x40) != 0;
 544                         data->autofan[2].min_off = (i & 0x80) != 0;
 545
 546                         i = lm85_read_value(client, LM85_REG_AFAN_HYST1);
 547                         data->zone[0].hyst = i >> 4;
 548                         data->zone[1].hyst = i & 0x0f;
 549
 550                         i = lm85_read_value(client, LM85_REG_AFAN_HYST2);
 551                         data->zone[2].hyst = i >> 4;
 552                 }
 553
 554                 data->last_config = jiffies;
 555         }  /* last_config */
 556
 557         data->valid = 1;
 558
 559         mutex_unlock(&data->update_lock);
 560
 561         return data;
 562 }
 563
 564 /* 4 Fans */
 565 static ssize_t fan_show(struct device *dev, struct device_attribute *attr,
 566                         char *buf)
 567 {
 568         int nr = to_sensor_dev_attr(attr)->index;
 569         struct lm85_data *data = lm85_update_device(dev);
 570         return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr]));
 571 }
 572
 573 static ssize_t fan_min_show(struct device *dev, struct device_attribute *attr,
 574                             char *buf)
 575 {
 576         int nr = to_sensor_dev_attr(attr)->index;
 577         struct lm85_data *data = lm85_update_device(dev);
 578         return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr]));
 579 }
 580
 581 static ssize_t fan_min_store(struct device *dev,
 582                              struct device_attribute *attr, const char *buf,
 583                              size_t count)
 584 {
 585         int nr = to_sensor_dev_attr(attr)->index;
 586         struct lm85_data *data = dev_get_drvdata(dev);
 587         struct i2c_client *client = data->client;
 588         unsigned long val;
 589         int err;
 590
 591         err = kstrtoul(buf, 10, &val);
 592         if (err)
 593                 return err;
 594
 595         mutex_lock(&data->update_lock);
 596         data->fan_min[nr] = FAN_TO_REG(val);
 597         lm85_write_value(client, LM85_REG_FAN_MIN(nr), data->fan_min[nr]);
 598         mutex_unlock(&data->update_lock);
 599         return count;
 600 }
 601
 602 static SENSOR_DEVICE_ATTR_RO(fan1_input, fan, 0);
 603 static SENSOR_DEVICE_ATTR_RW(fan1_min, fan_min, 0);
 604 static SENSOR_DEVICE_ATTR_RO(fan2_input, fan, 1);
 605 static SENSOR_DEVICE_ATTR_RW(fan2_min, fan_min, 1);
 606 static SENSOR_DEVICE_ATTR_RO(fan3_input, fan, 2);
 607 static SENSOR_DEVICE_ATTR_RW(fan3_min, fan_min, 2);
 608 static SENSOR_DEVICE_ATTR_RO(fan4_input, fan, 3);
 609 static SENSOR_DEVICE_ATTR_RW(fan4_min, fan_min, 3);
 610
 611 /* vid, vrm, alarms */
 612
 613 static ssize_t cpu0_vid_show(struct device *dev,
 614                              struct device_attribute *attr, char *buf)
 615 {
 616         struct lm85_data *data = lm85_update_device(dev);
 617         int vid;
 618
 619         if (data->has_vid5) {
 620                 /* 6-pin VID (VRM 10) */
 621                 vid = vid_from_reg(data->vid & 0x3f, data->vrm);
 622         } else {
 623                 /* 5-pin VID (VRM 9) */
 624                 vid = vid_from_reg(data->vid & 0x1f, data->vrm);
 625         }
 626
 627         return sprintf(buf, "%d\n", vid);
 628 }
 629
 630 static DEVICE_ATTR_RO(cpu0_vid);
 631
 632 static ssize_t vrm_show(struct device *dev, struct device_attribute *attr,
 633                         char *buf)
 634 {
 635         struct lm85_data *data = dev_get_drvdata(dev);
 636         return sprintf(buf, "%ld\n", (long) data->vrm);
 637 }
 638
 639 static ssize_t vrm_store(struct device *dev, struct device_attribute *attr,
 640                          const char *buf, size_t count)
 641 {
 642         struct lm85_data *data = dev_get_drvdata(dev);
 643         unsigned long val;
 644         int err;
 645
 646         err = kstrtoul(buf, 10, &val);
 647         if (err)
 648                 return err;
 649
 650         if (val > 255)
 651                 return -EINVAL;
 652
 653         data->vrm = val;
 654         return count;
 655 }
 656
 657 static DEVICE_ATTR_RW(vrm);
 658
 659 static ssize_t alarms_show(struct device *dev, struct device_attribute *attr,
 660                            char *buf)
 661 {
 662         struct lm85_data *data = lm85_update_device(dev);
 663         return sprintf(buf, "%u\n", data->alarms);
 664 }
 665
 666 static DEVICE_ATTR_RO(alarms);
 667
 668 static ssize_t alarm_show(struct device *dev, struct device_attribute *attr,
 669                           char *buf)
 670 {
 671         int nr = to_sensor_dev_attr(attr)->index;
 672         struct lm85_data *data = lm85_update_device(dev);
 673         return sprintf(buf, "%u\n", (data->alarms >> nr) & 1);
 674 }
 675
 676 static SENSOR_DEVICE_ATTR_RO(in0_alarm, alarm, 0);
 677 static SENSOR_DEVICE_ATTR_RO(in1_alarm, alarm, 1);
 678 static SENSOR_DEVICE_ATTR_RO(in2_alarm, alarm, 2);
 679 static SENSOR_DEVICE_ATTR_RO(in3_alarm, alarm, 3);
 680 static SENSOR_DEVICE_ATTR_RO(in4_alarm, alarm, 8);
 681 static SENSOR_DEVICE_ATTR_RO(in5_alarm, alarm, 18);
 682 static SENSOR_DEVICE_ATTR_RO(in6_alarm, alarm, 16);
 683 static SENSOR_DEVICE_ATTR_RO(in7_alarm, alarm, 17);
 684 static SENSOR_DEVICE_ATTR_RO(temp1_alarm, alarm, 4);
 685 static SENSOR_DEVICE_ATTR_RO(temp1_fault, alarm, 14);
 686 static SENSOR_DEVICE_ATTR_RO(temp2_alarm, alarm, 5);
 687 static SENSOR_DEVICE_ATTR_RO(temp3_alarm, alarm, 6);
 688 static SENSOR_DEVICE_ATTR_RO(temp3_fault, alarm, 15);
 689 static SENSOR_DEVICE_ATTR_RO(fan1_alarm, alarm, 10);
 690 static SENSOR_DEVICE_ATTR_RO(fan2_alarm, alarm, 11);
 691 static SENSOR_DEVICE_ATTR_RO(fan3_alarm, alarm, 12);
 692 static SENSOR_DEVICE_ATTR_RO(fan4_alarm, alarm, 13);
 693
 694 /* pwm */
 695
 696 static ssize_t pwm_show(struct device *dev, struct device_attribute *attr,
 697                         char *buf)
 698 {
 699         int nr = to_sensor_dev_attr(attr)->index;
 700         struct lm85_data *data = lm85_update_device(dev);
 701         return sprintf(buf, "%d\n", PWM_FROM_REG(data->pwm[nr]));
 702 }
 703
 704 static ssize_t pwm_store(struct device *dev, struct device_attribute *attr,
 705                          const char *buf, size_t count)
 706 {
 707         int nr = to_sensor_dev_attr(attr)->index;
 708         struct lm85_data *data = dev_get_drvdata(dev);
 709         struct i2c_client *client = data->client;
 710         unsigned long val;
 711         int err;
 712
 713         err = kstrtoul(buf, 10, &val);
 714         if (err)
 715                 return err;
 716
 717         mutex_lock(&data->update_lock);
 718         data->pwm[nr] = PWM_TO_REG(val);
 719         lm85_write_value(client, LM85_REG_PWM(nr), data->pwm[nr]);
 720         mutex_unlock(&data->update_lock);
 721         return count;
 722 }
 723
 724 static ssize_t pwm_enable_show(struct device *dev,
 725                                struct device_attribute *attr, char *buf)
 726 {
 727         int nr = to_sensor_dev_attr(attr)->index;
 728         struct lm85_data *data = lm85_update_device(dev);
 729         int pwm_zone, enable;
 730
 731         pwm_zone = ZONE_FROM_REG(data->autofan[nr].config);
 732         switch (pwm_zone) {
 733         case -1:        /* PWM is always at 100% */
 734                 enable = 0;
 735                 break;
 736         case 0:         /* PWM is always at 0% */
 737         case -2:        /* PWM responds to manual control */
 738                 enable = 1;
 739                 break;
 740         default:        /* PWM in automatic mode */
 741                 enable = 2;
 742         }
 743         return sprintf(buf, "%d\n", enable);
 744 }
 745
 746 static ssize_t pwm_enable_store(struct device *dev,
 747                                 struct device_attribute *attr,
 748                                 const char *buf, size_t count)
 749 {
 750         int nr = to_sensor_dev_attr(attr)->index;
 751         struct lm85_data *data = dev_get_drvdata(dev);
 752         struct i2c_client *client = data->client;
 753         u8 config;
 754         unsigned long val;
 755         int err;
 756
 757         err = kstrtoul(buf, 10, &val);
 758         if (err)
 759                 return err;
 760
 761         switch (val) {
 762         case 0:
 763                 config = 3;
 764                 break;
 765         case 1:
 766                 config = 7;
 767                 break;
 768         case 2:
 769                 /*
 770                  * Here we have to choose arbitrarily one of the 5 possible
 771                  * configurations; I go for the safest
 772                  */
 773                 config = 6;
 774                 break;
 775         default:
 776                 return -EINVAL;
 777         }
 778
 779         mutex_lock(&data->update_lock);
 780         data->autofan[nr].config = lm85_read_value(client,
 781                 LM85_REG_AFAN_CONFIG(nr));
 782         data->autofan[nr].config = (data->autofan[nr].config & ~0xe0)
 783                 | (config << 5);
 784         lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr),
 785                 data->autofan[nr].config);
 786         mutex_unlock(&data->update_lock);
 787         return count;
 788 }
 789
 790 static ssize_t pwm_freq_show(struct device *dev,
 791                              struct device_attribute *attr, char *buf)
 792 {
 793         int nr = to_sensor_dev_attr(attr)->index;
 794         struct lm85_data *data = lm85_update_device(dev);
 795         int freq;
 796
 797         if (IS_ADT7468_HFPWM(data))
 798                 freq = 22500;
 799         else
 800                 freq = FREQ_FROM_REG(data->freq_map, data->freq_map_size,
 801                                      data->pwm_freq[nr]);
 802
 803         return sprintf(buf, "%d\n", freq);
 804 }
 805
 806 static ssize_t pwm_freq_store(struct device *dev,
 807                               struct device_attribute *attr, const char *buf,
 808                               size_t count)
 809 {
 810         int nr = to_sensor_dev_attr(attr)->index;
 811         struct lm85_data *data = dev_get_drvdata(dev);
 812         struct i2c_client *client = data->client;
 813         unsigned long val;
 814         int err;
 815
 816         err = kstrtoul(buf, 10, &val);
 817         if (err)
 818                 return err;
 819
 820         mutex_lock(&data->update_lock);
 821         /*
 822          * The ADT7468 has a special high-frequency PWM output mode,
 823          * where all PWM outputs are driven by a 22.5 kHz clock.
 824          * This might confuse the user, but there's not much we can do.
 825          */
 826         if (data->type == adt7468 && val >= 11300) {    /* High freq. mode */
 827                 data->cfg5 &= ~ADT7468_HFPWM;
 828                 lm85_write_value(client, ADT7468_REG_CFG5, data->cfg5);
 829         } else {                                        /* Low freq. mode */
 830                 data->pwm_freq[nr] = FREQ_TO_REG(data->freq_map,
 831                                                  data->freq_map_size, val);
 832                 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
 833                                  (data->zone[nr].range << 4)
 834                                  | data->pwm_freq[nr]);
 835                 if (data->type == adt7468) {
 836                         data->cfg5 |= ADT7468_HFPWM;
 837                         lm85_write_value(client, ADT7468_REG_CFG5, data->cfg5);
 838                 }
 839         }
 840         mutex_unlock(&data->update_lock);
 841         return count;
 842 }
 843
 844 static SENSOR_DEVICE_ATTR_RW(pwm1, pwm, 0);
 845 static SENSOR_DEVICE_ATTR_RW(pwm1_enable, pwm_enable, 0);
 846 static SENSOR_DEVICE_ATTR_RW(pwm1_freq, pwm_freq, 0);
 847 static SENSOR_DEVICE_ATTR_RW(pwm2, pwm, 1);
 848 static SENSOR_DEVICE_ATTR_RW(pwm2_enable, pwm_enable, 1);
 849 static SENSOR_DEVICE_ATTR_RW(pwm2_freq, pwm_freq, 1);
 850 static SENSOR_DEVICE_ATTR_RW(pwm3, pwm, 2);
 851 static SENSOR_DEVICE_ATTR_RW(pwm3_enable, pwm_enable, 2);
 852 static SENSOR_DEVICE_ATTR_RW(pwm3_freq, pwm_freq, 2);
 853
 854 /* Voltages */
 855
 856 static ssize_t in_show(struct device *dev, struct device_attribute *attr,
 857                        char *buf)
 858 {
 859         int nr = to_sensor_dev_attr(attr)->index;
 860         struct lm85_data *data = lm85_update_device(dev);
 861         return sprintf(buf, "%d\n", INSEXT_FROM_REG(nr, data->in[nr],
 862                                                     data->in_ext[nr]));
 863 }
 864
 865 static ssize_t in_min_show(struct device *dev, struct device_attribute *attr,
 866                            char *buf)
 867 {
 868         int nr = to_sensor_dev_attr(attr)->index;
 869         struct lm85_data *data = lm85_update_device(dev);
 870         return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_min[nr]));
 871 }
 872
 873 static ssize_t in_min_store(struct device *dev, struct device_attribute *attr,
 874                             const char *buf, size_t count)
 875 {
 876         int nr = to_sensor_dev_attr(attr)->index;
 877         struct lm85_data *data = dev_get_drvdata(dev);
 878         struct i2c_client *client = data->client;
 879         long val;
 880         int err;
 881
 882         err = kstrtol(buf, 10, &val);
 883         if (err)
 884                 return err;
 885
 886         mutex_lock(&data->update_lock);
 887         data->in_min[nr] = INS_TO_REG(nr, val);
 888         lm85_write_value(client, LM85_REG_IN_MIN(nr), data->in_min[nr]);
 889         mutex_unlock(&data->update_lock);
 890         return count;
 891 }
 892
 893 static ssize_t in_max_show(struct device *dev, struct device_attribute *attr,
 894                            char *buf)
 895 {
 896         int nr = to_sensor_dev_attr(attr)->index;
 897         struct lm85_data *data = lm85_update_device(dev);
 898         return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_max[nr]));
 899 }
 900
 901 static ssize_t in_max_store(struct device *dev, struct device_attribute *attr,
 902                             const char *buf, size_t count)
 903 {
 904         int nr = to_sensor_dev_attr(attr)->index;
 905         struct lm85_data *data = dev_get_drvdata(dev);
 906         struct i2c_client *client = data->client;
 907         long val;
 908         int err;
 909
 910         err = kstrtol(buf, 10, &val);
 911         if (err)
 912                 return err;
 913
 914         mutex_lock(&data->update_lock);
 915         data->in_max[nr] = INS_TO_REG(nr, val);
 916         lm85_write_value(client, LM85_REG_IN_MAX(nr), data->in_max[nr]);
 917         mutex_unlock(&data->update_lock);
 918         return count;
 919 }
 920
 921 static SENSOR_DEVICE_ATTR_RO(in0_input, in, 0);
 922 static SENSOR_DEVICE_ATTR_RW(in0_min, in_min, 0);
 923 static SENSOR_DEVICE_ATTR_RW(in0_max, in_max, 0);
 924 static SENSOR_DEVICE_ATTR_RO(in1_input, in, 1);
 925 static SENSOR_DEVICE_ATTR_RW(in1_min, in_min, 1);
 926 static SENSOR_DEVICE_ATTR_RW(in1_max, in_max, 1);
 927 static SENSOR_DEVICE_ATTR_RO(in2_input, in, 2);
 928 static SENSOR_DEVICE_ATTR_RW(in2_min, in_min, 2);
 929 static SENSOR_DEVICE_ATTR_RW(in2_max, in_max, 2);
 930 static SENSOR_DEVICE_ATTR_RO(in3_input, in, 3);
 931 static SENSOR_DEVICE_ATTR_RW(in3_min, in_min, 3);
 932 static SENSOR_DEVICE_ATTR_RW(in3_max, in_max, 3);
 933 static SENSOR_DEVICE_ATTR_RO(in4_input, in, 4);
 934 static SENSOR_DEVICE_ATTR_RW(in4_min, in_min, 4);
 935 static SENSOR_DEVICE_ATTR_RW(in4_max, in_max, 4);
 936 static SENSOR_DEVICE_ATTR_RO(in5_input, in, 5);
 937 static SENSOR_DEVICE_ATTR_RW(in5_min, in_min, 5);
 938 static SENSOR_DEVICE_ATTR_RW(in5_max, in_max, 5);
 939 static SENSOR_DEVICE_ATTR_RO(in6_input, in, 6);
 940 static SENSOR_DEVICE_ATTR_RW(in6_min, in_min, 6);
 941 static SENSOR_DEVICE_ATTR_RW(in6_max, in_max, 6);
 942 static SENSOR_DEVICE_ATTR_RO(in7_input, in, 7);
 943 static SENSOR_DEVICE_ATTR_RW(in7_min, in_min, 7);
 944 static SENSOR_DEVICE_ATTR_RW(in7_max, in_max, 7);
 945
 946 /* Temps */
 947
 948 static ssize_t temp_show(struct device *dev, struct device_attribute *attr,
 949                          char *buf)
 950 {
 951         int nr = to_sensor_dev_attr(attr)->index;
 952         struct lm85_data *data = lm85_update_device(dev);
 953         return sprintf(buf, "%d\n", TEMPEXT_FROM_REG(data->temp[nr],
 954                                                      data->temp_ext[nr]));
 955 }
 956
 957 static ssize_t temp_min_show(struct device *dev,
 958                              struct device_attribute *attr, char *buf)
 959 {
 960         int nr = to_sensor_dev_attr(attr)->index;
 961         struct lm85_data *data = lm85_update_device(dev);
 962         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[nr]));
 963 }
 964
 965 static ssize_t temp_min_store(struct device *dev,
 966                               struct device_attribute *attr, const char *buf,
 967                               size_t count)
 968 {
 969         int nr = to_sensor_dev_attr(attr)->index;
 970         struct lm85_data *data = dev_get_drvdata(dev);
 971         struct i2c_client *client = data->client;
 972         long val;
 973         int err;
 974
 975         err = kstrtol(buf, 10, &val);
 976         if (err)
 977                 return err;
 978
 979         if (IS_ADT7468_OFF64(data))
 980                 val += 64;
 981
 982         mutex_lock(&data->update_lock);
 983         data->temp_min[nr] = TEMP_TO_REG(val);
 984         lm85_write_value(client, LM85_REG_TEMP_MIN(nr), data->temp_min[nr]);
 985         mutex_unlock(&data->update_lock);
 986         return count;
 987 }
 988
 989 static ssize_t temp_max_show(struct device *dev,
 990                              struct device_attribute *attr, char *buf)
 991 {
 992         int nr = to_sensor_dev_attr(attr)->index;
 993         struct lm85_data *data = lm85_update_device(dev);
 994         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[nr]));
 995 }
 996
 997 static ssize_t temp_max_store(struct device *dev,
 998                               struct device_attribute *attr, const char *buf,
 999                               size_t count)
1000 {
1001         int nr = to_sensor_dev_attr(attr)->index;
1002         struct lm85_data *data = dev_get_drvdata(dev);
1003         struct i2c_client *client = data->client;
1004         long val;
1005         int err;
1006
1007         err = kstrtol(buf, 10, &val);
1008         if (err)
1009                 return err;
1010
1011         if (IS_ADT7468_OFF64(data))
1012                 val += 64;
1013
1014         mutex_lock(&data->update_lock);
1015         data->temp_max[nr] = TEMP_TO_REG(val);
1016         lm85_write_value(client, LM85_REG_TEMP_MAX(nr), data->temp_max[nr]);
1017         mutex_unlock(&data->update_lock);
1018         return count;
1019 }
1020
1021 static SENSOR_DEVICE_ATTR_RO(temp1_input, temp, 0);
1022 static SENSOR_DEVICE_ATTR_RW(temp1_min, temp_min, 0);
1023 static SENSOR_DEVICE_ATTR_RW(temp1_max, temp_max, 0);
1024 static SENSOR_DEVICE_ATTR_RO(temp2_input, temp, 1);
1025 static SENSOR_DEVICE_ATTR_RW(temp2_min, temp_min, 1);
1026 static SENSOR_DEVICE_ATTR_RW(temp2_max, temp_max, 1);
1027 static SENSOR_DEVICE_ATTR_RO(temp3_input, temp, 2);
1028 static SENSOR_DEVICE_ATTR_RW(temp3_min, temp_min, 2);
1029 static SENSOR_DEVICE_ATTR_RW(temp3_max, temp_max, 2);
1030
1031 /* Automatic PWM control */
1032
1033 static ssize_t pwm_auto_channels_show(struct device *dev,
1034                                       struct device_attribute *attr,
1035                                       char *buf)
1036 {
1037         int nr = to_sensor_dev_attr(attr)->index;
1038         struct lm85_data *data = lm85_update_device(dev);
1039         return sprintf(buf, "%d\n", ZONE_FROM_REG(data->autofan[nr].config));
1040 }
1041
1042 static ssize_t pwm_auto_channels_store(struct device *dev,
1043                                        struct device_attribute *attr,
1044                                        const char *buf, size_t count)
1045 {
1046         int nr = to_sensor_dev_attr(attr)->index;
1047         struct lm85_data *data = dev_get_drvdata(dev);
1048         struct i2c_client *client = data->client;
1049         long val;
1050         int err;
1051
1052         err = kstrtol(buf, 10, &val);
1053         if (err)
1054                 return err;
1055
1056         mutex_lock(&data->update_lock);
1057         data->autofan[nr].config = (data->autofan[nr].config & (~0xe0))
1058                 | ZONE_TO_REG(val);
1059         lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr),
1060                 data->autofan[nr].config);
1061         mutex_unlock(&data->update_lock);
1062         return count;
1063 }
1064
1065 static ssize_t pwm_auto_pwm_min_show(struct device *dev,
1066                                      struct device_attribute *attr, char *buf)
1067 {
1068         int nr = to_sensor_dev_attr(attr)->index;
1069         struct lm85_data *data = lm85_update_device(dev);
1070         return sprintf(buf, "%d\n", PWM_FROM_REG(data->autofan[nr].min_pwm));
1071 }
1072
1073 static ssize_t pwm_auto_pwm_min_store(struct device *dev,
1074                                       struct device_attribute *attr,
1075                                       const char *buf, size_t count)
1076 {
1077         int nr = to_sensor_dev_attr(attr)->index;
1078         struct lm85_data *data = dev_get_drvdata(dev);
1079         struct i2c_client *client = data->client;
1080         unsigned long val;
1081         int err;
1082
1083         err = kstrtoul(buf, 10, &val);
1084         if (err)
1085                 return err;
1086
1087         mutex_lock(&data->update_lock);
1088         data->autofan[nr].min_pwm = PWM_TO_REG(val);
1089         lm85_write_value(client, LM85_REG_AFAN_MINPWM(nr),
1090                 data->autofan[nr].min_pwm);
1091         mutex_unlock(&data->update_lock);
1092         return count;
1093 }
1094
1095 static ssize_t pwm_auto_pwm_minctl_show(struct device *dev,
1096                                         struct device_attribute *attr,
1097                                         char *buf)
1098 {
1099         int nr = to_sensor_dev_attr(attr)->index;
1100         struct lm85_data *data = lm85_update_device(dev);
1101         return sprintf(buf, "%d\n", data->autofan[nr].min_off);
1102 }
1103
1104 static ssize_t pwm_auto_pwm_minctl_store(struct device *dev,
1105                                          struct device_attribute *attr,
1106                                          const char *buf, size_t count)
1107 {
1108         int nr = to_sensor_dev_attr(attr)->index;
1109         struct lm85_data *data = dev_get_drvdata(dev);
1110         struct i2c_client *client = data->client;
1111         u8 tmp;
1112         long val;
1113         int err;
1114
1115         err = kstrtol(buf, 10, &val);
1116         if (err)
1117                 return err;
1118
1119         mutex_lock(&data->update_lock);
1120         data->autofan[nr].min_off = val;
1121         tmp = lm85_read_value(client, LM85_REG_AFAN_SPIKE1);
1122         tmp &= ~(0x20 << nr);
1123         if (data->autofan[nr].min_off)
1124                 tmp |= 0x20 << nr;
1125         lm85_write_value(client, LM85_REG_AFAN_SPIKE1, tmp);
1126         mutex_unlock(&data->update_lock);
1127         return count;
1128 }
1129
1130 static SENSOR_DEVICE_ATTR_RW(pwm1_auto_channels, pwm_auto_channels, 0);
1131 static SENSOR_DEVICE_ATTR_RW(pwm1_auto_pwm_min, pwm_auto_pwm_min, 0);
1132 static SENSOR_DEVICE_ATTR_RW(pwm1_auto_pwm_minctl, pwm_auto_pwm_minctl, 0);
1133 static SENSOR_DEVICE_ATTR_RW(pwm2_auto_channels, pwm_auto_channels, 1);
1134 static SENSOR_DEVICE_ATTR_RW(pwm2_auto_pwm_min, pwm_auto_pwm_min, 1);
1135 static SENSOR_DEVICE_ATTR_RW(pwm2_auto_pwm_minctl, pwm_auto_pwm_minctl, 1);
1136 static SENSOR_DEVICE_ATTR_RW(pwm3_auto_channels, pwm_auto_channels, 2);
1137 static SENSOR_DEVICE_ATTR_RW(pwm3_auto_pwm_min, pwm_auto_pwm_min, 2);
1138 static SENSOR_DEVICE_ATTR_RW(pwm3_auto_pwm_minctl, pwm_auto_pwm_minctl, 2);
1139
1140 /* Temperature settings for automatic PWM control */
1141
1142 static ssize_t temp_auto_temp_off_show(struct device *dev,
1143                                        struct device_attribute *attr,
1144                                        char *buf)
1145 {
1146         int nr = to_sensor_dev_attr(attr)->index;
1147         struct lm85_data *data = lm85_update_device(dev);
1148         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit) -
1149                 HYST_FROM_REG(data->zone[nr].hyst));
1150 }
1151
1152 static ssize_t temp_auto_temp_off_store(struct device *dev,
1153                                         struct device_attribute *attr,
1154                                         const char *buf, size_t count)
1155 {
1156         int nr = to_sensor_dev_attr(attr)->index;
1157         struct lm85_data *data = dev_get_drvdata(dev);
1158         struct i2c_client *client = data->client;
1159         int min;
1160         long val;
1161         int err;
1162
1163         err = kstrtol(buf, 10, &val);
1164         if (err)
1165                 return err;
1166
1167         mutex_lock(&data->update_lock);
1168         min = TEMP_FROM_REG(data->zone[nr].limit);
1169         data->zone[nr].hyst = HYST_TO_REG(min - val);
1170         if (nr == 0 || nr == 1) {
1171                 lm85_write_value(client, LM85_REG_AFAN_HYST1,
1172                         (data->zone[0].hyst << 4)
1173                         | data->zone[1].hyst);
1174         } else {
1175                 lm85_write_value(client, LM85_REG_AFAN_HYST2,
1176                         (data->zone[2].hyst << 4));
1177         }
1178         mutex_unlock(&data->update_lock);
1179         return count;
1180 }
1181
1182 static ssize_t temp_auto_temp_min_show(struct device *dev,
1183                                        struct device_attribute *attr,
1184                                        char *buf)
1185 {
1186         int nr = to_sensor_dev_attr(attr)->index;
1187         struct lm85_data *data = lm85_update_device(dev);
1188         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit));
1189 }
1190
1191 static ssize_t temp_auto_temp_min_store(struct device *dev,
1192                                         struct device_attribute *attr,
1193                                         const char *buf, size_t count)
1194 {
1195         int nr = to_sensor_dev_attr(attr)->index;
1196         struct lm85_data *data = dev_get_drvdata(dev);
1197         struct i2c_client *client = data->client;
1198         long val;
1199         int err;
1200
1201         err = kstrtol(buf, 10, &val);
1202         if (err)
1203                 return err;
1204
1205         mutex_lock(&data->update_lock);
1206         data->zone[nr].limit = TEMP_TO_REG(val);
1207         lm85_write_value(client, LM85_REG_AFAN_LIMIT(nr),
1208                 data->zone[nr].limit);
1209
1210 /* Update temp_auto_max and temp_auto_range */
1211         data->zone[nr].range = RANGE_TO_REG(
1212                 TEMP_FROM_REG(data->zone[nr].max_desired) -
1213                 TEMP_FROM_REG(data->zone[nr].limit));
1214         lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
1215                 ((data->zone[nr].range & 0x0f) << 4)
1216                 | data->pwm_freq[nr]);
1217
1218         mutex_unlock(&data->update_lock);
1219         return count;
1220 }
1221
1222 static ssize_t temp_auto_temp_max_show(struct device *dev,
1223                                        struct device_attribute *attr,
1224                                        char *buf)
1225 {
1226         int nr = to_sensor_dev_attr(attr)->index;
1227         struct lm85_data *data = lm85_update_device(dev);
1228         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit) +
1229                 RANGE_FROM_REG(data->zone[nr].range));
1230 }
1231
1232 static ssize_t temp_auto_temp_max_store(struct device *dev,
1233                                         struct device_attribute *attr,
1234                                         const char *buf, size_t count)
1235 {
1236         int nr = to_sensor_dev_attr(attr)->index;
1237         struct lm85_data *data = dev_get_drvdata(dev);
1238         struct i2c_client *client = data->client;
1239         int min;
1240         long val;
1241         int err;
1242
1243         err = kstrtol(buf, 10, &val);
1244         if (err)
1245                 return err;
1246
1247         mutex_lock(&data->update_lock);
1248         min = TEMP_FROM_REG(data->zone[nr].limit);
1249         data->zone[nr].max_desired = TEMP_TO_REG(val);
1250         data->zone[nr].range = RANGE_TO_REG(
1251                 val - min);
1252         lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
1253                 ((data->zone[nr].range & 0x0f) << 4)
1254                 | data->pwm_freq[nr]);
1255         mutex_unlock(&data->update_lock);
1256         return count;
1257 }
1258
1259 static ssize_t temp_auto_temp_crit_show(struct device *dev,
1260                                         struct device_attribute *attr,
1261                                         char *buf)
1262 {
1263         int nr = to_sensor_dev_attr(attr)->index;
1264         struct lm85_data *data = lm85_update_device(dev);
1265         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].critical));
1266 }
1267
1268 static ssize_t temp_auto_temp_crit_store(struct device *dev,
1269                                          struct device_attribute *attr,
1270                                          const char *buf, size_t count)
1271 {
1272         int nr = to_sensor_dev_attr(attr)->index;
1273         struct lm85_data *data = dev_get_drvdata(dev);
1274         struct i2c_client *client = data->client;
1275         long val;
1276         int err;
1277
1278         err = kstrtol(buf, 10, &val);
1279         if (err)
1280                 return err;
1281
1282         mutex_lock(&data->update_lock);
1283         data->zone[nr].critical = TEMP_TO_REG(val);
1284         lm85_write_value(client, LM85_REG_AFAN_CRITICAL(nr),
1285                 data->zone[nr].critical);
1286         mutex_unlock(&data->update_lock);
1287         return count;
1288 }
1289
1290 static SENSOR_DEVICE_ATTR_RW(temp1_auto_temp_off, temp_auto_temp_off, 0);
1291 static SENSOR_DEVICE_ATTR_RW(temp1_auto_temp_min, temp_auto_temp_min, 0);
1292 static SENSOR_DEVICE_ATTR_RW(temp1_auto_temp_max, temp_auto_temp_max, 0);
1293 static SENSOR_DEVICE_ATTR_RW(temp1_auto_temp_crit, temp_auto_temp_crit, 0);
1294 static SENSOR_DEVICE_ATTR_RW(temp2_auto_temp_off, temp_auto_temp_off, 1);
1295 static SENSOR_DEVICE_ATTR_RW(temp2_auto_temp_min, temp_auto_temp_min, 1);
1296 static SENSOR_DEVICE_ATTR_RW(temp2_auto_temp_max, temp_auto_temp_max, 1);
1297 static SENSOR_DEVICE_ATTR_RW(temp2_auto_temp_crit, temp_auto_temp_crit, 1);
1298 static SENSOR_DEVICE_ATTR_RW(temp3_auto_temp_off, temp_auto_temp_off, 2);
1299 static SENSOR_DEVICE_ATTR_RW(temp3_auto_temp_min, temp_auto_temp_min, 2);
1300 static SENSOR_DEVICE_ATTR_RW(temp3_auto_temp_max, temp_auto_temp_max, 2);
1301 static SENSOR_DEVICE_ATTR_RW(temp3_auto_temp_crit, temp_auto_temp_crit, 2);
1302
1303 static struct attribute *lm85_attributes[] = {
1304         &sensor_dev_attr_fan1_input.dev_attr.attr,
1305         &sensor_dev_attr_fan2_input.dev_attr.attr,
1306         &sensor_dev_attr_fan3_input.dev_attr.attr,
1307         &sensor_dev_attr_fan4_input.dev_attr.attr,
1308         &sensor_dev_attr_fan1_min.dev_attr.attr,
1309         &sensor_dev_attr_fan2_min.dev_attr.attr,
1310         &sensor_dev_attr_fan3_min.dev_attr.attr,
1311         &sensor_dev_attr_fan4_min.dev_attr.attr,
1312         &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1313         &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1314         &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1315         &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1316
1317         &sensor_dev_attr_pwm1.dev_attr.attr,
1318         &sensor_dev_attr_pwm2.dev_attr.attr,
1319         &sensor_dev_attr_pwm3.dev_attr.attr,
1320         &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1321         &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1322         &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1323         &sensor_dev_attr_pwm1_freq.dev_attr.attr,
1324         &sensor_dev_attr_pwm2_freq.dev_attr.attr,
1325         &sensor_dev_attr_pwm3_freq.dev_attr.attr,
1326
1327         &sensor_dev_attr_in0_input.dev_attr.attr,
1328         &sensor_dev_attr_in1_input.dev_attr.attr,
1329         &sensor_dev_attr_in2_input.dev_attr.attr,
1330         &sensor_dev_attr_in3_input.dev_attr.attr,
1331         &sensor_dev_attr_in0_min.dev_attr.attr,
1332         &sensor_dev_attr_in1_min.dev_attr.attr,
1333         &sensor_dev_attr_in2_min.dev_attr.attr,
1334         &sensor_dev_attr_in3_min.dev_attr.attr,
1335         &sensor_dev_attr_in0_max.dev_attr.attr,
1336         &sensor_dev_attr_in1_max.dev_attr.attr,
1337         &sensor_dev_attr_in2_max.dev_attr.attr,
1338         &sensor_dev_attr_in3_max.dev_attr.attr,
1339         &sensor_dev_attr_in0_alarm.dev_attr.attr,
1340         &sensor_dev_attr_in1_alarm.dev_attr.attr,
1341         &sensor_dev_attr_in2_alarm.dev_attr.attr,
1342         &sensor_dev_attr_in3_alarm.dev_attr.attr,
1343
1344         &sensor_dev_attr_temp1_input.dev_attr.attr,
1345         &sensor_dev_attr_temp2_input.dev_attr.attr,
1346         &sensor_dev_attr_temp3_input.dev_attr.attr,
1347         &sensor_dev_attr_temp1_min.dev_attr.attr,
1348         &sensor_dev_attr_temp2_min.dev_attr.attr,
1349         &sensor_dev_attr_temp3_min.dev_attr.attr,
1350         &sensor_dev_attr_temp1_max.dev_attr.attr,
1351         &sensor_dev_attr_temp2_max.dev_attr.attr,
1352         &sensor_dev_attr_temp3_max.dev_attr.attr,
1353         &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1354         &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1355         &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1356         &sensor_dev_attr_temp1_fault.dev_attr.attr,
1357         &sensor_dev_attr_temp3_fault.dev_attr.attr,
1358
1359         &sensor_dev_attr_pwm1_auto_channels.dev_attr.attr,
1360         &sensor_dev_attr_pwm2_auto_channels.dev_attr.attr,
1361         &sensor_dev_attr_pwm3_auto_channels.dev_attr.attr,
1362         &sensor_dev_attr_pwm1_auto_pwm_min.dev_attr.attr,
1363         &sensor_dev_attr_pwm2_auto_pwm_min.dev_attr.attr,
1364         &sensor_dev_attr_pwm3_auto_pwm_min.dev_attr.attr,
1365
1366         &sensor_dev_attr_temp1_auto_temp_min.dev_attr.attr,
1367         &sensor_dev_attr_temp2_auto_temp_min.dev_attr.attr,
1368         &sensor_dev_attr_temp3_auto_temp_min.dev_attr.attr,
1369         &sensor_dev_attr_temp1_auto_temp_max.dev_attr.attr,
1370         &sensor_dev_attr_temp2_auto_temp_max.dev_attr.attr,
1371         &sensor_dev_attr_temp3_auto_temp_max.dev_attr.attr,
1372         &sensor_dev_attr_temp1_auto_temp_crit.dev_attr.attr,
1373         &sensor_dev_attr_temp2_auto_temp_crit.dev_attr.attr,
1374         &sensor_dev_attr_temp3_auto_temp_crit.dev_attr.attr,
1375
1376         &dev_attr_vrm.attr,
1377         &dev_attr_cpu0_vid.attr,
1378         &dev_attr_alarms.attr,
1379         NULL
1380 };
1381
1382 static const struct attribute_group lm85_group = {
1383         .attrs = lm85_attributes,
1384 };
1385
1386 static struct attribute *lm85_attributes_minctl[] = {
1387         &sensor_dev_attr_pwm1_auto_pwm_minctl.dev_attr.attr,
1388         &sensor_dev_attr_pwm2_auto_pwm_minctl.dev_attr.attr,
1389         &sensor_dev_attr_pwm3_auto_pwm_minctl.dev_attr.attr,
1390         NULL
1391 };
1392
1393 static const struct attribute_group lm85_group_minctl = {
1394         .attrs = lm85_attributes_minctl,
1395 };
1396
1397 static struct attribute *lm85_attributes_temp_off[] = {
1398         &sensor_dev_attr_temp1_auto_temp_off.dev_attr.attr,
1399         &sensor_dev_attr_temp2_auto_temp_off.dev_attr.attr,
1400         &sensor_dev_attr_temp3_auto_temp_off.dev_attr.attr,
1401         NULL
1402 };
1403
1404 static const struct attribute_group lm85_group_temp_off = {
1405         .attrs = lm85_attributes_temp_off,
1406 };
1407
1408 static struct attribute *lm85_attributes_in4[] = {
1409         &sensor_dev_attr_in4_input.dev_attr.attr,
1410         &sensor_dev_attr_in4_min.dev_attr.attr,
1411         &sensor_dev_attr_in4_max.dev_attr.attr,
1412         &sensor_dev_attr_in4_alarm.dev_attr.attr,
1413         NULL
1414 };
1415
1416 static const struct attribute_group lm85_group_in4 = {
1417         .attrs = lm85_attributes_in4,
1418 };
1419
1420 static struct attribute *lm85_attributes_in567[] = {
1421         &sensor_dev_attr_in5_input.dev_attr.attr,
1422         &sensor_dev_attr_in6_input.dev_attr.attr,
1423         &sensor_dev_attr_in7_input.dev_attr.attr,
1424         &sensor_dev_attr_in5_min.dev_attr.attr,
1425         &sensor_dev_attr_in6_min.dev_attr.attr,
1426         &sensor_dev_attr_in7_min.dev_attr.attr,
1427         &sensor_dev_attr_in5_max.dev_attr.attr,
1428         &sensor_dev_attr_in6_max.dev_attr.attr,
1429         &sensor_dev_attr_in7_max.dev_attr.attr,
1430         &sensor_dev_attr_in5_alarm.dev_attr.attr,
1431         &sensor_dev_attr_in6_alarm.dev_attr.attr,
1432         &sensor_dev_attr_in7_alarm.dev_attr.attr,
1433         NULL
1434 };
1435
1436 static const struct attribute_group lm85_group_in567 = {
1437         .attrs = lm85_attributes_in567,
1438 };
1439
1440 static void lm85_init_client(struct i2c_client *client)
1441 {
1442         int value;
1443
1444         /* Start monitoring if needed */
1445         value = lm85_read_value(client, LM85_REG_CONFIG);
1446         if (!(value & 0x01)) {
1447                 dev_info(&client->dev, "Starting monitoring\n");
1448                 lm85_write_value(client, LM85_REG_CONFIG, value | 0x01);
1449         }
1450
1451         /* Warn about unusual configuration bits */
1452         if (value & 0x02)
1453                 dev_warn(&client->dev, "Device configuration is locked\n");
1454         if (!(value & 0x04))
1455                 dev_warn(&client->dev, "Device is not ready\n");
1456 }
1457
1458 static int lm85_is_fake(struct i2c_client *client)
1459 {
1460         /*
1461          * Differenciate between real LM96000 and Winbond WPCD377I. The latter
1462          * emulate the former except that it has no hardware monitoring function
1463          * so the readings are always 0.
1464          */
1465         int i;
1466         u8 in_temp, fan;
1467
1468         for (i = 0; i < 8; i++) {
1469                 in_temp = i2c_smbus_read_byte_data(client, 0x20 + i);
1470                 fan = i2c_smbus_read_byte_data(client, 0x28 + i);
1471                 if (in_temp != 0x00 || fan != 0xff)
1472                         return 0;
1473         }
1474
1475         return 1;
1476 }
1477
1478 /* Return 0 if detection is successful, -ENODEV otherwise */
1479 static int lm85_detect(struct i2c_client *client, struct i2c_board_info *info)
1480 {
1481         struct i2c_adapter *adapter = client->adapter;
1482         int address = client->addr;
1483         const char *type_name = NULL;
1484         int company, verstep;
1485
1486         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
1487                 /* We need to be able to do byte I/O */
1488                 return -ENODEV;
1489         }
1490
1491         /* Determine the chip type */
1492         company = lm85_read_value(client, LM85_REG_COMPANY);
1493         verstep = lm85_read_value(client, LM85_REG_VERSTEP);
1494
1495         dev_dbg(&adapter->dev,
1496                 "Detecting device at 0x%02x with COMPANY: 0x%02x and VERSTEP: 0x%02x\n",
1497                 address, company, verstep);
1498
1499         if (company == LM85_COMPANY_NATIONAL) {
1500                 switch (verstep) {
1501                 case LM85_VERSTEP_LM85C:
1502                         type_name = "lm85c";
1503                         break;
1504                 case LM85_VERSTEP_LM85B:
1505                         type_name = "lm85b";
1506                         break;
1507                 case LM85_VERSTEP_LM96000_1:
1508                 case LM85_VERSTEP_LM96000_2:
1509                         /* Check for Winbond WPCD377I */
1510                         if (lm85_is_fake(client)) {
1511                                 dev_dbg(&adapter->dev,
1512                                         "Found Winbond WPCD377I, ignoring\n");
1513                                 return -ENODEV;
1514                         }
1515                         type_name = "lm96000";
1516                         break;
1517                 }
1518         } else if (company == LM85_COMPANY_ANALOG_DEV) {
1519                 switch (verstep) {
1520                 case LM85_VERSTEP_ADM1027:
1521                         type_name = "adm1027";
1522                         break;
1523                 case LM85_VERSTEP_ADT7463:
1524                 case LM85_VERSTEP_ADT7463C:
1525                         type_name = "adt7463";
1526                         break;
1527                 case LM85_VERSTEP_ADT7468_1:
1528                 case LM85_VERSTEP_ADT7468_2:
1529                         type_name = "adt7468";
1530                         break;
1531                 }
1532         } else if (company == LM85_COMPANY_SMSC) {
1533                 switch (verstep) {
1534                 case LM85_VERSTEP_EMC6D100_A0:
1535                 case LM85_VERSTEP_EMC6D100_A1:
1536                         /* Note: we can't tell a '100 from a '101 */
1537                         type_name = "emc6d100";
1538                         break;
1539                 case LM85_VERSTEP_EMC6D102:
1540                         type_name = "emc6d102";
1541                         break;
1542                 case LM85_VERSTEP_EMC6D103_A0:
1543                 case LM85_VERSTEP_EMC6D103_A1:
1544                         type_name = "emc6d103";
1545                         break;
1546                 case LM85_VERSTEP_EMC6D103S:
1547                         type_name = "emc6d103s";
1548                         break;
1549                 }
1550         }
1551
1552         if (!type_name)
1553                 return -ENODEV;
1554
1555         strlcpy(info->type, type_name, I2C_NAME_SIZE);
1556
1557         return 0;
1558 }
1559
1560 static int lm85_probe(struct i2c_client *client, const struct i2c_device_id *id)
1561 {
1562         struct device *dev = &client->dev;
1563         struct device *hwmon_dev;
1564         struct lm85_data *data;
1565         int idx = 0;
1566
1567         data = devm_kzalloc(dev, sizeof(struct lm85_data), GFP_KERNEL);
1568         if (!data)
1569                 return -ENOMEM;
1570
1571         data->client = client;
1572         if (client->dev.of_node)
1573                 data->type = (enum chips)of_device_get_match_data(&client->dev);
1574         else
1575                 data->type = id->driver_data;
1576         mutex_init(&data->update_lock);
1577
1578         /* Fill in the chip specific driver values */
1579         switch (data->type) {
1580         case adm1027:
1581         case adt7463:
1582         case adt7468:
1583         case emc6d100:
1584         case emc6d102:
1585         case emc6d103:
1586         case emc6d103s:
1587                 data->freq_map = adm1027_freq_map;
1588                 data->freq_map_size = ARRAY_SIZE(adm1027_freq_map);
1589                 break;
1590         case lm96000:
1591                 data->freq_map = lm96000_freq_map;
1592                 data->freq_map_size = ARRAY_SIZE(lm96000_freq_map);
1593                 break;
1594         default:
1595                 data->freq_map = lm85_freq_map;
1596                 data->freq_map_size = ARRAY_SIZE(lm85_freq_map);
1597         }
1598
1599         /* Set the VRM version */
1600         data->vrm = vid_which_vrm();
1601
1602         /* Initialize the LM85 chip */
1603         lm85_init_client(client);
1604
1605         /* sysfs hooks */
1606         data->groups[idx++] = &lm85_group;
1607
1608         /* minctl and temp_off exist on all chips except emc6d103s */
1609         if (data->type != emc6d103s) {
1610                 data->groups[idx++] = &lm85_group_minctl;
1611                 data->groups[idx++] = &lm85_group_temp_off;
1612         }
1613
1614         /*
1615          * The ADT7463/68 have an optional VRM 10 mode where pin 21 is used
1616          * as a sixth digital VID input rather than an analog input.
1617          */
1618         if (data->type == adt7463 || data->type == adt7468) {
1619                 u8 vid = lm85_read_value(client, LM85_REG_VID);
1620                 if (vid & 0x80)
1621                         data->has_vid5 = true;
1622         }
1623
1624         if (!data->has_vid5)
1625                 data->groups[idx++] = &lm85_group_in4;
1626
1627         /* The EMC6D100 has 3 additional voltage inputs */
1628         if (data->type == emc6d100)
1629                 data->groups[idx++] = &lm85_group_in567;
1630
1631         hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
1632                                                            data, data->groups);
1633         return PTR_ERR_OR_ZERO(hwmon_dev);
1634 }
1635
1636 static const struct i2c_device_id lm85_id[] = {
1637         { "adm1027", adm1027 },
1638         { "adt7463", adt7463 },
1639         { "adt7468", adt7468 },
1640         { "lm85", lm85 },
1641         { "lm85b", lm85 },
1642         { "lm85c", lm85 },
1643         { "lm96000", lm96000 },
1644         { "emc6d100", emc6d100 },
1645         { "emc6d101", emc6d100 },
1646         { "emc6d102", emc6d102 },
1647         { "emc6d103", emc6d103 },
1648         { "emc6d103s", emc6d103s },
1649         { }
1650 };
1651 MODULE_DEVICE_TABLE(i2c, lm85_id);
1652
1653 static const struct of_device_id __maybe_unused lm85_of_match[] = {
1654         {
1655                 .compatible = "adi,adm1027",
1656                 .data = (void *)adm1027
1657         },
1658         {
1659                 .compatible = "adi,adt7463",
1660                 .data = (void *)adt7463
1661         },
1662         {
1663                 .compatible = "adi,adt7468",
1664                 .data = (void *)adt7468
1665         },
1666         {
1667                 .compatible = "national,lm85",
1668                 .data = (void *)lm85
1669         },
1670         {
1671                 .compatible = "national,lm85b",
1672                 .data = (void *)lm85
1673         },
1674         {
1675                 .compatible = "national,lm85c",
1676                 .data = (void *)lm85
1677         },
1678         {
1679                 .compatible = "ti,lm96000",
1680                 .data = (void *)lm96000
1681         },
1682         {
1683                 .compatible = "smsc,emc6d100",
1684                 .data = (void *)emc6d100
1685         },
1686         {
1687                 .compatible = "smsc,emc6d101",
1688                 .data = (void *)emc6d100
1689         },
1690         {
1691                 .compatible = "smsc,emc6d102",
1692                 .data = (void *)emc6d102
1693         },
1694         {
1695                 .compatible = "smsc,emc6d103",
1696                 .data = (void *)emc6d103
1697         },
1698         {
1699                 .compatible = "smsc,emc6d103s",
1700                 .data = (void *)emc6d103s
1701         },
1702         { },
1703 };
1704 MODULE_DEVICE_TABLE(of, lm85_of_match);
1705
1706 static struct i2c_driver lm85_driver = {
1707         .class          = I2C_CLASS_HWMON,
1708         .driver = {
1709                 .name   = "lm85",
1710                 .of_match_table = of_match_ptr(lm85_of_match),
1711         },
1712         .probe          = lm85_probe,
1713         .id_table       = lm85_id,
1714         .detect         = lm85_detect,
1715         .address_list   = normal_i2c,
1716 };
1717
1718 module_i2c_driver(lm85_driver);
1719
1720 MODULE_LICENSE("GPL");
1721 MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, "
1722         "Margit Schubert-While <margitsw@t-online.de>, "
1723         "Justin Thiessen <jthiessen@penguincomputing.com>");
1724 MODULE_DESCRIPTION("LM85-B, LM85-C driver");