drivers/hwmon/adt7475.c

   1 /*
   2  * adt7475 - Thermal sensor driver for the ADT7475 chip and derivatives
   3  * Copyright (C) 2007-2008, Advanced Micro Devices, Inc.
   4  * Copyright (C) 2008 Jordan Crouse <jordan@cosmicpenguin.net>
   5  * Copyright (C) 2008 Hans de Goede <hdegoede@redhat.com>
   6  * Copyright (C) 2009 Jean Delvare <jdelvare@suse.de>
   7  *
   8  * Derived from the lm83 driver by Jean Delvare
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13  */
  14
  15 #include <linux/module.h>
  16 #include <linux/of_device.h>
  17 #include <linux/init.h>
  18 #include <linux/slab.h>
  19 #include <linux/i2c.h>
  20 #include <linux/hwmon.h>
  21 #include <linux/hwmon-sysfs.h>
  22 #include <linux/hwmon-vid.h>
  23 #include <linux/err.h>
  24 #include <linux/jiffies.h>
  25 #include <linux/util_macros.h>
  26
  27 /* Indexes for the sysfs hooks */
  28
  29 #define INPUT           0
  30 #define MIN             1
  31 #define MAX             2
  32 #define CONTROL         3
  33 #define OFFSET          3
  34 #define AUTOMIN         4
  35 #define THERM           5
  36 #define HYSTERSIS       6
  37
  38 /*
  39  * These are unique identifiers for the sysfs functions - unlike the
  40  * numbers above, these are not also indexes into an array
  41  */
  42
  43 #define ALARM           9
  44 #define FAULT           10
  45
  46 /* 7475 Common Registers */
  47
  48 #define REG_DEVREV2             0x12    /* ADT7490 only */
  49
  50 #define REG_VTT                 0x1E    /* ADT7490 only */
  51 #define REG_EXTEND3             0x1F    /* ADT7490 only */
  52
  53 #define REG_VOLTAGE_BASE        0x20
  54 #define REG_TEMP_BASE           0x25
  55 #define REG_TACH_BASE           0x28
  56 #define REG_PWM_BASE            0x30
  57 #define REG_PWM_MAX_BASE        0x38
  58
  59 #define REG_DEVID               0x3D
  60 #define REG_VENDID              0x3E
  61 #define REG_DEVID2              0x3F
  62
  63 #define REG_CONFIG1             0x40
  64
  65 #define REG_STATUS1             0x41
  66 #define REG_STATUS2             0x42
  67
  68 #define REG_VID                 0x43    /* ADT7476 only */
  69
  70 #define REG_VOLTAGE_MIN_BASE    0x44
  71 #define REG_VOLTAGE_MAX_BASE    0x45
  72
  73 #define REG_TEMP_MIN_BASE       0x4E
  74 #define REG_TEMP_MAX_BASE       0x4F
  75
  76 #define REG_TACH_MIN_BASE       0x54
  77
  78 #define REG_PWM_CONFIG_BASE     0x5C
  79
  80 #define REG_TEMP_TRANGE_BASE    0x5F
  81
  82 #define REG_ENHANCE_ACOUSTICS1  0x62
  83 #define REG_ENHANCE_ACOUSTICS2  0x63
  84
  85 #define REG_PWM_MIN_BASE        0x64
  86
  87 #define REG_TEMP_TMIN_BASE      0x67
  88 #define REG_TEMP_THERM_BASE     0x6A
  89
  90 #define REG_REMOTE1_HYSTERSIS   0x6D
  91 #define REG_REMOTE2_HYSTERSIS   0x6E
  92
  93 #define REG_TEMP_OFFSET_BASE    0x70
  94
  95 #define REG_CONFIG2             0x73
  96
  97 #define REG_EXTEND1             0x76
  98 #define REG_EXTEND2             0x77
  99
 100 #define REG_CONFIG3             0x78
 101 #define REG_CONFIG5             0x7C
 102 #define REG_CONFIG4             0x7D
 103
 104 #define REG_STATUS4             0x81    /* ADT7490 only */
 105
 106 #define REG_VTT_MIN             0x84    /* ADT7490 only */
 107 #define REG_VTT_MAX             0x86    /* ADT7490 only */
 108
 109 #define VID_VIDSEL              0x80    /* ADT7476 only */
 110
 111 #define CONFIG2_ATTN            0x20
 112
 113 #define CONFIG3_SMBALERT        0x01
 114 #define CONFIG3_THERM           0x02
 115
 116 #define CONFIG4_PINFUNC         0x03
 117 #define CONFIG4_MAXDUTY         0x08
 118 #define CONFIG4_ATTN_IN10       0x30
 119 #define CONFIG4_ATTN_IN43       0xC0
 120
 121 #define CONFIG5_TWOSCOMP        0x01
 122 #define CONFIG5_TEMPOFFSET      0x02
 123 #define CONFIG5_VIDGPIO         0x10    /* ADT7476 only */
 124
 125 /* ADT7475 Settings */
 126
 127 #define ADT7475_VOLTAGE_COUNT   5       /* Not counting Vtt */
 128 #define ADT7475_TEMP_COUNT      3
 129 #define ADT7475_TACH_COUNT      4
 130 #define ADT7475_PWM_COUNT       3
 131
 132 /* Macro to read the registers */
 133
 134 #define adt7475_read(reg) i2c_smbus_read_byte_data(client, (reg))
 135
 136 /* Macros to easily index the registers */
 137
 138 #define TACH_REG(idx) (REG_TACH_BASE + ((idx) * 2))
 139 #define TACH_MIN_REG(idx) (REG_TACH_MIN_BASE + ((idx) * 2))
 140
 141 #define PWM_REG(idx) (REG_PWM_BASE + (idx))
 142 #define PWM_MAX_REG(idx) (REG_PWM_MAX_BASE + (idx))
 143 #define PWM_MIN_REG(idx) (REG_PWM_MIN_BASE + (idx))
 144 #define PWM_CONFIG_REG(idx) (REG_PWM_CONFIG_BASE + (idx))
 145
 146 #define VOLTAGE_REG(idx) (REG_VOLTAGE_BASE + (idx))
 147 #define VOLTAGE_MIN_REG(idx) (REG_VOLTAGE_MIN_BASE + ((idx) * 2))
 148 #define VOLTAGE_MAX_REG(idx) (REG_VOLTAGE_MAX_BASE + ((idx) * 2))
 149
 150 #define TEMP_REG(idx) (REG_TEMP_BASE + (idx))
 151 #define TEMP_MIN_REG(idx) (REG_TEMP_MIN_BASE + ((idx) * 2))
 152 #define TEMP_MAX_REG(idx) (REG_TEMP_MAX_BASE + ((idx) * 2))
 153 #define TEMP_TMIN_REG(idx) (REG_TEMP_TMIN_BASE + (idx))
 154 #define TEMP_THERM_REG(idx) (REG_TEMP_THERM_BASE + (idx))
 155 #define TEMP_OFFSET_REG(idx) (REG_TEMP_OFFSET_BASE + (idx))
 156 #define TEMP_TRANGE_REG(idx) (REG_TEMP_TRANGE_BASE + (idx))
 157
 158 static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
 159
 160 enum chips { adt7473, adt7475, adt7476, adt7490 };
 161
 162 static const struct i2c_device_id adt7475_id[] = {
 163         { "adt7473", adt7473 },
 164         { "adt7475", adt7475 },
 165         { "adt7476", adt7476 },
 166         { "adt7490", adt7490 },
 167         { }
 168 };
 169 MODULE_DEVICE_TABLE(i2c, adt7475_id);
 170
 171 static const struct of_device_id adt7475_of_match[] = {
 172         {
 173                 .compatible = "adi,adt7473",
 174                 .data = (void *)adt7473
 175         },
 176         {
 177                 .compatible = "adi,adt7475",
 178                 .data = (void *)adt7475
 179         },
 180         {
 181                 .compatible = "adi,adt7476",
 182                 .data = (void *)adt7476
 183         },
 184         {
 185                 .compatible = "adi,adt7490",
 186                 .data = (void *)adt7490
 187         },
 188         { },
 189 };
 190 MODULE_DEVICE_TABLE(of, adt7475_of_match);
 191
 192 struct adt7475_data {
 193         struct device *hwmon_dev;
 194         struct mutex lock;
 195
 196         unsigned long measure_updated;
 197         bool valid;
 198
 199         u8 config4;
 200         u8 config5;
 201         u8 has_voltage;
 202         u8 bypass_attn;         /* Bypass voltage attenuator */
 203         u8 has_pwm2:1;
 204         u8 has_fan4:1;
 205         u8 has_vid:1;
 206         u32 alarms;
 207         u16 voltage[3][6];
 208         u16 temp[7][3];
 209         u16 tach[2][4];
 210         u8 pwm[4][3];
 211         u8 range[3];
 212         u8 pwmctl[3];
 213         u8 pwmchan[3];
 214         u8 enh_acoustics[2];
 215
 216         u8 vid;
 217         u8 vrm;
 218 };
 219
 220 static struct i2c_driver adt7475_driver;
 221 static struct adt7475_data *adt7475_update_device(struct device *dev);
 222 static void adt7475_read_hystersis(struct i2c_client *client);
 223 static void adt7475_read_pwm(struct i2c_client *client, int index);
 224
 225 /* Given a temp value, convert it to register value */
 226
 227 static inline u16 temp2reg(struct adt7475_data *data, long val)
 228 {
 229         u16 ret;
 230
 231         if (!(data->config5 & CONFIG5_TWOSCOMP)) {
 232                 val = clamp_val(val, -64000, 191000);
 233                 ret = (val + 64500) / 1000;
 234         } else {
 235                 val = clamp_val(val, -128000, 127000);
 236                 if (val < -500)
 237                         ret = (256500 + val) / 1000;
 238                 else
 239                         ret = (val + 500) / 1000;
 240         }
 241
 242         return ret << 2;
 243 }
 244
 245 /* Given a register value, convert it to a real temp value */
 246
 247 static inline int reg2temp(struct adt7475_data *data, u16 reg)
 248 {
 249         if (data->config5 & CONFIG5_TWOSCOMP) {
 250                 if (reg >= 512)
 251                         return (reg - 1024) * 250;
 252                 else
 253                         return reg * 250;
 254         } else
 255                 return (reg - 256) * 250;
 256 }
 257
 258 static inline int tach2rpm(u16 tach)
 259 {
 260         if (tach == 0 || tach == 0xFFFF)
 261                 return 0;
 262
 263         return (90000 * 60) / tach;
 264 }
 265
 266 static inline u16 rpm2tach(unsigned long rpm)
 267 {
 268         if (rpm == 0)
 269                 return 0;
 270
 271         return clamp_val((90000 * 60) / rpm, 1, 0xFFFF);
 272 }
 273
 274 /* Scaling factors for voltage inputs, taken from the ADT7490 datasheet */
 275 static const int adt7473_in_scaling[ADT7475_VOLTAGE_COUNT + 1][2] = {
 276         { 45, 94 },     /* +2.5V */
 277         { 175, 525 },   /* Vccp */
 278         { 68, 71 },     /* Vcc */
 279         { 93, 47 },     /* +5V */
 280         { 120, 20 },    /* +12V */
 281         { 45, 45 },     /* Vtt */
 282 };
 283
 284 static inline int reg2volt(int channel, u16 reg, u8 bypass_attn)
 285 {
 286         const int *r = adt7473_in_scaling[channel];
 287
 288         if (bypass_attn & (1 << channel))
 289                 return DIV_ROUND_CLOSEST(reg * 2250, 1024);
 290         return DIV_ROUND_CLOSEST(reg * (r[0] + r[1]) * 2250, r[1] * 1024);
 291 }
 292
 293 static inline u16 volt2reg(int channel, long volt, u8 bypass_attn)
 294 {
 295         const int *r = adt7473_in_scaling[channel];
 296         long reg;
 297
 298         if (bypass_attn & (1 << channel))
 299                 reg = DIV_ROUND_CLOSEST(volt * 1024, 2250);
 300         else
 301                 reg = DIV_ROUND_CLOSEST(volt * r[1] * 1024,
 302                                         (r[0] + r[1]) * 2250);
 303         return clamp_val(reg, 0, 1023) & (0xff << 2);
 304 }
 305
 306 static int adt7475_read_word(struct i2c_client *client, int reg)
 307 {
 308         int val1, val2;
 309
 310         val1 = i2c_smbus_read_byte_data(client, reg);
 311         if (val1 < 0)
 312                 return val1;
 313         val2 = i2c_smbus_read_byte_data(client, reg + 1);
 314         if (val2 < 0)
 315                 return val2;
 316
 317         return val1 | (val2 << 8);
 318 }
 319
 320 static void adt7475_write_word(struct i2c_client *client, int reg, u16 val)
 321 {
 322         i2c_smbus_write_byte_data(client, reg + 1, val >> 8);
 323         i2c_smbus_write_byte_data(client, reg, val & 0xFF);
 324 }
 325
 326 static ssize_t show_voltage(struct device *dev, struct device_attribute *attr,
 327                             char *buf)
 328 {
 329         struct adt7475_data *data = adt7475_update_device(dev);
 330         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 331         unsigned short val;
 332
 333         if (IS_ERR(data))
 334                 return PTR_ERR(data);
 335
 336         switch (sattr->nr) {
 337         case ALARM:
 338                 return sprintf(buf, "%d\n",
 339                                (data->alarms >> sattr->index) & 1);
 340         default:
 341                 val = data->voltage[sattr->nr][sattr->index];
 342                 return sprintf(buf, "%d\n",
 343                                reg2volt(sattr->index, val, data->bypass_attn));
 344         }
 345 }
 346
 347 static ssize_t set_voltage(struct device *dev, struct device_attribute *attr,
 348                            const char *buf, size_t count)
 349 {
 350
 351         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 352         struct i2c_client *client = to_i2c_client(dev);
 353         struct adt7475_data *data = i2c_get_clientdata(client);
 354         unsigned char reg;
 355         long val;
 356
 357         if (kstrtol(buf, 10, &val))
 358                 return -EINVAL;
 359
 360         mutex_lock(&data->lock);
 361
 362         data->voltage[sattr->nr][sattr->index] =
 363                                 volt2reg(sattr->index, val, data->bypass_attn);
 364
 365         if (sattr->index < ADT7475_VOLTAGE_COUNT) {
 366                 if (sattr->nr == MIN)
 367                         reg = VOLTAGE_MIN_REG(sattr->index);
 368                 else
 369                         reg = VOLTAGE_MAX_REG(sattr->index);
 370         } else {
 371                 if (sattr->nr == MIN)
 372                         reg = REG_VTT_MIN;
 373                 else
 374                         reg = REG_VTT_MAX;
 375         }
 376
 377         i2c_smbus_write_byte_data(client, reg,
 378                                   data->voltage[sattr->nr][sattr->index] >> 2);
 379         mutex_unlock(&data->lock);
 380
 381         return count;
 382 }
 383
 384 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
 385                          char *buf)
 386 {
 387         struct adt7475_data *data = adt7475_update_device(dev);
 388         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 389         int out;
 390
 391         if (IS_ERR(data))
 392                 return PTR_ERR(data);
 393
 394         switch (sattr->nr) {
 395         case HYSTERSIS:
 396                 mutex_lock(&data->lock);
 397                 out = data->temp[sattr->nr][sattr->index];
 398                 if (sattr->index != 1)
 399                         out = (out >> 4) & 0xF;
 400                 else
 401                         out = (out & 0xF);
 402                 /*
 403                  * Show the value as an absolute number tied to
 404                  * THERM
 405                  */
 406                 out = reg2temp(data, data->temp[THERM][sattr->index]) -
 407                         out * 1000;
 408                 mutex_unlock(&data->lock);
 409                 break;
 410
 411         case OFFSET:
 412                 /*
 413                  * Offset is always 2's complement, regardless of the
 414                  * setting in CONFIG5
 415                  */
 416                 mutex_lock(&data->lock);
 417                 out = (s8)data->temp[sattr->nr][sattr->index];
 418                 if (data->config5 & CONFIG5_TEMPOFFSET)
 419                         out *= 1000;
 420                 else
 421                         out *= 500;
 422                 mutex_unlock(&data->lock);
 423                 break;
 424
 425         case ALARM:
 426                 out = (data->alarms >> (sattr->index + 4)) & 1;
 427                 break;
 428
 429         case FAULT:
 430                 /* Note - only for remote1 and remote2 */
 431                 out = !!(data->alarms & (sattr->index ? 0x8000 : 0x4000));
 432                 break;
 433
 434         default:
 435                 /* All other temp values are in the configured format */
 436                 out = reg2temp(data, data->temp[sattr->nr][sattr->index]);
 437         }
 438
 439         return sprintf(buf, "%d\n", out);
 440 }
 441
 442 static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
 443                         const char *buf, size_t count)
 444 {
 445         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 446         struct i2c_client *client = to_i2c_client(dev);
 447         struct adt7475_data *data = i2c_get_clientdata(client);
 448         unsigned char reg = 0;
 449         u8 out;
 450         int temp;
 451         long val;
 452
 453         if (kstrtol(buf, 10, &val))
 454                 return -EINVAL;
 455
 456         mutex_lock(&data->lock);
 457
 458         /* We need the config register in all cases for temp <-> reg conv. */
 459         data->config5 = adt7475_read(REG_CONFIG5);
 460
 461         switch (sattr->nr) {
 462         case OFFSET:
 463                 if (data->config5 & CONFIG5_TEMPOFFSET) {
 464                         val = clamp_val(val, -63000, 127000);
 465                         out = data->temp[OFFSET][sattr->index] = val / 1000;
 466                 } else {
 467                         val = clamp_val(val, -63000, 64000);
 468                         out = data->temp[OFFSET][sattr->index] = val / 500;
 469                 }
 470                 break;
 471
 472         case HYSTERSIS:
 473                 /*
 474                  * The value will be given as an absolute value, turn it
 475                  * into an offset based on THERM
 476                  */
 477
 478                 /* Read fresh THERM and HYSTERSIS values from the chip */
 479                 data->temp[THERM][sattr->index] =
 480                         adt7475_read(TEMP_THERM_REG(sattr->index)) << 2;
 481                 adt7475_read_hystersis(client);
 482
 483                 temp = reg2temp(data, data->temp[THERM][sattr->index]);
 484                 val = clamp_val(val, temp - 15000, temp);
 485                 val = (temp - val) / 1000;
 486
 487                 if (sattr->index != 1) {
 488                         data->temp[HYSTERSIS][sattr->index] &= 0xF0;
 489                         data->temp[HYSTERSIS][sattr->index] |= (val & 0xF) << 4;
 490                 } else {
 491                         data->temp[HYSTERSIS][sattr->index] &= 0x0F;
 492                         data->temp[HYSTERSIS][sattr->index] |= (val & 0xF);
 493                 }
 494
 495                 out = data->temp[HYSTERSIS][sattr->index];
 496                 break;
 497
 498         default:
 499                 data->temp[sattr->nr][sattr->index] = temp2reg(data, val);
 500
 501                 /*
 502                  * We maintain an extra 2 digits of precision for simplicity
 503                  * - shift those back off before writing the value
 504                  */
 505                 out = (u8) (data->temp[sattr->nr][sattr->index] >> 2);
 506         }
 507
 508         switch (sattr->nr) {
 509         case MIN:
 510                 reg = TEMP_MIN_REG(sattr->index);
 511                 break;
 512         case MAX:
 513                 reg = TEMP_MAX_REG(sattr->index);
 514                 break;
 515         case OFFSET:
 516                 reg = TEMP_OFFSET_REG(sattr->index);
 517                 break;
 518         case AUTOMIN:
 519                 reg = TEMP_TMIN_REG(sattr->index);
 520                 break;
 521         case THERM:
 522                 reg = TEMP_THERM_REG(sattr->index);
 523                 break;
 524         case HYSTERSIS:
 525                 if (sattr->index != 2)
 526                         reg = REG_REMOTE1_HYSTERSIS;
 527                 else
 528                         reg = REG_REMOTE2_HYSTERSIS;
 529
 530                 break;
 531         }
 532
 533         i2c_smbus_write_byte_data(client, reg, out);
 534
 535         mutex_unlock(&data->lock);
 536         return count;
 537 }
 538
 539 /* Assuming CONFIG6[SLOW] is 0 */
 540 static const int ad7475_st_map[] = {
 541         37500, 18800, 12500, 7500, 4700, 3100, 1600, 800,
 542 };
 543
 544 static ssize_t show_temp_st(struct device *dev, struct device_attribute *attr,
 545                                   char *buf)
 546 {
 547         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 548         struct i2c_client *client = to_i2c_client(dev);
 549         struct adt7475_data *data = i2c_get_clientdata(client);
 550         long val;
 551
 552         switch (sattr->index) {
 553         case 0:
 554                 val = data->enh_acoustics[0] & 0xf;
 555                 break;
 556         case 1:
 557                 val = (data->enh_acoustics[1] >> 4) & 0xf;
 558                 break;
 559         case 2:
 560         default:
 561                 val = data->enh_acoustics[1] & 0xf;
 562                 break;
 563         }
 564
 565         if (val & 0x8)
 566                 return sprintf(buf, "%d\n", ad7475_st_map[val & 0x7]);
 567         else
 568                 return sprintf(buf, "0\n");
 569 }
 570
 571 static ssize_t set_temp_st(struct device *dev, struct device_attribute *attr,
 572                                  const char *buf, size_t count)
 573 {
 574         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 575         struct i2c_client *client = to_i2c_client(dev);
 576         struct adt7475_data *data = i2c_get_clientdata(client);
 577         unsigned char reg;
 578         int shift, idx;
 579         ulong val;
 580
 581         if (kstrtoul(buf, 10, &val))
 582                 return -EINVAL;
 583
 584         switch (sattr->index) {
 585         case 0:
 586                 reg = REG_ENHANCE_ACOUSTICS1;
 587                 shift = 0;
 588                 idx = 0;
 589                 break;
 590         case 1:
 591                 reg = REG_ENHANCE_ACOUSTICS2;
 592                 shift = 0;
 593                 idx = 1;
 594                 break;
 595         case 2:
 596         default:
 597                 reg = REG_ENHANCE_ACOUSTICS2;
 598                 shift = 4;
 599                 idx = 1;
 600                 break;
 601         }
 602
 603         if (val > 0) {
 604                 val = find_closest_descending(val, ad7475_st_map,
 605                                               ARRAY_SIZE(ad7475_st_map));
 606                 val |= 0x8;
 607         }
 608
 609         mutex_lock(&data->lock);
 610
 611         data->enh_acoustics[idx] &= ~(0xf << shift);
 612         data->enh_acoustics[idx] |= (val << shift);
 613
 614         i2c_smbus_write_byte_data(client, reg, data->enh_acoustics[idx]);
 615
 616         mutex_unlock(&data->lock);
 617
 618         return count;
 619 }
 620
 621 /*
 622  * Table of autorange values - the user will write the value in millidegrees,
 623  * and we'll convert it
 624  */
 625 static const int autorange_table[] = {
 626         2000, 2500, 3330, 4000, 5000, 6670, 8000,
 627         10000, 13330, 16000, 20000, 26670, 32000, 40000,
 628         53330, 80000
 629 };
 630
 631 static ssize_t show_point2(struct device *dev, struct device_attribute *attr,
 632                            char *buf)
 633 {
 634         struct adt7475_data *data = adt7475_update_device(dev);
 635         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 636         int out, val;
 637
 638         if (IS_ERR(data))
 639                 return PTR_ERR(data);
 640
 641         mutex_lock(&data->lock);
 642         out = (data->range[sattr->index] >> 4) & 0x0F;
 643         val = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
 644         mutex_unlock(&data->lock);
 645
 646         return sprintf(buf, "%d\n", val + autorange_table[out]);
 647 }
 648
 649 static ssize_t set_point2(struct device *dev, struct device_attribute *attr,
 650                           const char *buf, size_t count)
 651 {
 652         struct i2c_client *client = to_i2c_client(dev);
 653         struct adt7475_data *data = i2c_get_clientdata(client);
 654         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 655         int temp;
 656         long val;
 657
 658         if (kstrtol(buf, 10, &val))
 659                 return -EINVAL;
 660
 661         mutex_lock(&data->lock);
 662
 663         /* Get a fresh copy of the needed registers */
 664         data->config5 = adt7475_read(REG_CONFIG5);
 665         data->temp[AUTOMIN][sattr->index] =
 666                 adt7475_read(TEMP_TMIN_REG(sattr->index)) << 2;
 667         data->range[sattr->index] =
 668                 adt7475_read(TEMP_TRANGE_REG(sattr->index));
 669
 670         /*
 671          * The user will write an absolute value, so subtract the start point
 672          * to figure the range
 673          */
 674         temp = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
 675         val = clamp_val(val, temp + autorange_table[0],
 676                 temp + autorange_table[ARRAY_SIZE(autorange_table) - 1]);
 677         val -= temp;
 678
 679         /* Find the nearest table entry to what the user wrote */
 680         val = find_closest(val, autorange_table, ARRAY_SIZE(autorange_table));
 681
 682         data->range[sattr->index] &= ~0xF0;
 683         data->range[sattr->index] |= val << 4;
 684
 685         i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
 686                                   data->range[sattr->index]);
 687
 688         mutex_unlock(&data->lock);
 689         return count;
 690 }
 691
 692 static ssize_t show_tach(struct device *dev, struct device_attribute *attr,
 693                          char *buf)
 694 {
 695         struct adt7475_data *data = adt7475_update_device(dev);
 696         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 697         int out;
 698
 699         if (IS_ERR(data))
 700                 return PTR_ERR(data);
 701
 702         if (sattr->nr == ALARM)
 703                 out = (data->alarms >> (sattr->index + 10)) & 1;
 704         else
 705                 out = tach2rpm(data->tach[sattr->nr][sattr->index]);
 706
 707         return sprintf(buf, "%d\n", out);
 708 }
 709
 710 static ssize_t set_tach(struct device *dev, struct device_attribute *attr,
 711                         const char *buf, size_t count)
 712 {
 713
 714         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 715         struct i2c_client *client = to_i2c_client(dev);
 716         struct adt7475_data *data = i2c_get_clientdata(client);
 717         unsigned long val;
 718
 719         if (kstrtoul(buf, 10, &val))
 720                 return -EINVAL;
 721
 722         mutex_lock(&data->lock);
 723
 724         data->tach[MIN][sattr->index] = rpm2tach(val);
 725
 726         adt7475_write_word(client, TACH_MIN_REG(sattr->index),
 727                            data->tach[MIN][sattr->index]);
 728
 729         mutex_unlock(&data->lock);
 730         return count;
 731 }
 732
 733 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
 734                         char *buf)
 735 {
 736         struct adt7475_data *data = adt7475_update_device(dev);
 737         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 738
 739         if (IS_ERR(data))
 740                 return PTR_ERR(data);
 741
 742         return sprintf(buf, "%d\n", data->pwm[sattr->nr][sattr->index]);
 743 }
 744
 745 static ssize_t show_pwmchan(struct device *dev, struct device_attribute *attr,
 746                             char *buf)
 747 {
 748         struct adt7475_data *data = adt7475_update_device(dev);
 749         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 750
 751         if (IS_ERR(data))
 752                 return PTR_ERR(data);
 753
 754         return sprintf(buf, "%d\n", data->pwmchan[sattr->index]);
 755 }
 756
 757 static ssize_t show_pwmctrl(struct device *dev, struct device_attribute *attr,
 758                             char *buf)
 759 {
 760         struct adt7475_data *data = adt7475_update_device(dev);
 761         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 762
 763         if (IS_ERR(data))
 764                 return PTR_ERR(data);
 765
 766         return sprintf(buf, "%d\n", data->pwmctl[sattr->index]);
 767 }
 768
 769 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
 770                        const char *buf, size_t count)
 771 {
 772
 773         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 774         struct i2c_client *client = to_i2c_client(dev);
 775         struct adt7475_data *data = i2c_get_clientdata(client);
 776         unsigned char reg = 0;
 777         long val;
 778
 779         if (kstrtol(buf, 10, &val))
 780                 return -EINVAL;
 781
 782         mutex_lock(&data->lock);
 783
 784         switch (sattr->nr) {
 785         case INPUT:
 786                 /* Get a fresh value for CONTROL */
 787                 data->pwm[CONTROL][sattr->index] =
 788                         adt7475_read(PWM_CONFIG_REG(sattr->index));
 789
 790                 /*
 791                  * If we are not in manual mode, then we shouldn't allow
 792                  * the user to set the pwm speed
 793                  */
 794                 if (((data->pwm[CONTROL][sattr->index] >> 5) & 7) != 7) {
 795                         mutex_unlock(&data->lock);
 796                         return count;
 797                 }
 798
 799                 reg = PWM_REG(sattr->index);
 800                 break;
 801
 802         case MIN:
 803                 reg = PWM_MIN_REG(sattr->index);
 804                 break;
 805
 806         case MAX:
 807                 reg = PWM_MAX_REG(sattr->index);
 808                 break;
 809         }
 810
 811         data->pwm[sattr->nr][sattr->index] = clamp_val(val, 0, 0xFF);
 812         i2c_smbus_write_byte_data(client, reg,
 813                                   data->pwm[sattr->nr][sattr->index]);
 814         mutex_unlock(&data->lock);
 815
 816         return count;
 817 }
 818
 819 static ssize_t show_stall_disable(struct device *dev,
 820                                   struct device_attribute *attr, char *buf)
 821 {
 822         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 823         struct i2c_client *client = to_i2c_client(dev);
 824         struct adt7475_data *data = i2c_get_clientdata(client);
 825         u8 mask = BIT(5 + sattr->index);
 826
 827         return sprintf(buf, "%d\n", !!(data->enh_acoustics[0] & mask));
 828 }
 829
 830 static ssize_t set_stall_disable(struct device *dev,
 831                                  struct device_attribute *attr, const char *buf,
 832                                  size_t count)
 833 {
 834         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 835         struct i2c_client *client = to_i2c_client(dev);
 836         struct adt7475_data *data = i2c_get_clientdata(client);
 837         long val;
 838         u8 mask = BIT(5 + sattr->index);
 839
 840         if (kstrtol(buf, 10, &val))
 841                 return -EINVAL;
 842
 843         mutex_lock(&data->lock);
 844
 845         data->enh_acoustics[0] &= ~mask;
 846         if (val)
 847                 data->enh_acoustics[0] |= mask;
 848
 849         i2c_smbus_write_byte_data(client, REG_ENHANCE_ACOUSTICS1,
 850                                   data->enh_acoustics[0]);
 851
 852         mutex_unlock(&data->lock);
 853
 854         return count;
 855 }
 856
 857 /* Called by set_pwmctrl and set_pwmchan */
 858
 859 static int hw_set_pwm(struct i2c_client *client, int index,
 860                       unsigned int pwmctl, unsigned int pwmchan)
 861 {
 862         struct adt7475_data *data = i2c_get_clientdata(client);
 863         long val = 0;
 864
 865         switch (pwmctl) {
 866         case 0:
 867                 val = 0x03;     /* Run at full speed */
 868                 break;
 869         case 1:
 870                 val = 0x07;     /* Manual mode */
 871                 break;
 872         case 2:
 873                 switch (pwmchan) {
 874                 case 1:
 875                         /* Remote1 controls PWM */
 876                         val = 0x00;
 877                         break;
 878                 case 2:
 879                         /* local controls PWM */
 880                         val = 0x01;
 881                         break;
 882                 case 4:
 883                         /* remote2 controls PWM */
 884                         val = 0x02;
 885                         break;
 886                 case 6:
 887                         /* local/remote2 control PWM */
 888                         val = 0x05;
 889                         break;
 890                 case 7:
 891                         /* All three control PWM */
 892                         val = 0x06;
 893                         break;
 894                 default:
 895                         return -EINVAL;
 896                 }
 897                 break;
 898         default:
 899                 return -EINVAL;
 900         }
 901
 902         data->pwmctl[index] = pwmctl;
 903         data->pwmchan[index] = pwmchan;
 904
 905         data->pwm[CONTROL][index] &= ~0xE0;
 906         data->pwm[CONTROL][index] |= (val & 7) << 5;
 907
 908         i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
 909                                   data->pwm[CONTROL][index]);
 910
 911         return 0;
 912 }
 913
 914 static ssize_t set_pwmchan(struct device *dev, struct device_attribute *attr,
 915                            const char *buf, size_t count)
 916 {
 917         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 918         struct i2c_client *client = to_i2c_client(dev);
 919         struct adt7475_data *data = i2c_get_clientdata(client);
 920         int r;
 921         long val;
 922
 923         if (kstrtol(buf, 10, &val))
 924                 return -EINVAL;
 925
 926         mutex_lock(&data->lock);
 927         /* Read Modify Write PWM values */
 928         adt7475_read_pwm(client, sattr->index);
 929         r = hw_set_pwm(client, sattr->index, data->pwmctl[sattr->index], val);
 930         if (r)
 931                 count = r;
 932         mutex_unlock(&data->lock);
 933
 934         return count;
 935 }
 936
 937 static ssize_t set_pwmctrl(struct device *dev, struct device_attribute *attr,
 938                            const char *buf, size_t count)
 939 {
 940         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 941         struct i2c_client *client = to_i2c_client(dev);
 942         struct adt7475_data *data = i2c_get_clientdata(client);
 943         int r;
 944         long val;
 945
 946         if (kstrtol(buf, 10, &val))
 947                 return -EINVAL;
 948
 949         mutex_lock(&data->lock);
 950         /* Read Modify Write PWM values */
 951         adt7475_read_pwm(client, sattr->index);
 952         r = hw_set_pwm(client, sattr->index, val, data->pwmchan[sattr->index]);
 953         if (r)
 954                 count = r;
 955         mutex_unlock(&data->lock);
 956
 957         return count;
 958 }
 959
 960 /* List of frequencies for the PWM */
 961 static const int pwmfreq_table[] = {
 962         11, 14, 22, 29, 35, 44, 58, 88, 22500
 963 };
 964
 965 static ssize_t show_pwmfreq(struct device *dev, struct device_attribute *attr,
 966                             char *buf)
 967 {
 968         struct adt7475_data *data = adt7475_update_device(dev);
 969         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 970         int idx;
 971
 972         if (IS_ERR(data))
 973                 return PTR_ERR(data);
 974         idx = clamp_val(data->range[sattr->index] & 0xf, 0,
 975                         ARRAY_SIZE(pwmfreq_table) - 1);
 976
 977         return sprintf(buf, "%d\n", pwmfreq_table[idx]);
 978 }
 979
 980 static ssize_t set_pwmfreq(struct device *dev, struct device_attribute *attr,
 981                            const char *buf, size_t count)
 982 {
 983         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 984         struct i2c_client *client = to_i2c_client(dev);
 985         struct adt7475_data *data = i2c_get_clientdata(client);
 986         int out;
 987         long val;
 988
 989         if (kstrtol(buf, 10, &val))
 990                 return -EINVAL;
 991
 992         out = find_closest(val, pwmfreq_table, ARRAY_SIZE(pwmfreq_table));
 993
 994         mutex_lock(&data->lock);
 995
 996         data->range[sattr->index] =
 997                 adt7475_read(TEMP_TRANGE_REG(sattr->index));
 998         data->range[sattr->index] &= ~0xf;
 999         data->range[sattr->index] |= out;
1000
1001         i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
1002                                   data->range[sattr->index]);
1003
1004         mutex_unlock(&data->lock);
1005         return count;
1006 }
1007
1008 static ssize_t pwm_use_point2_pwm_at_crit_show(struct device *dev,
1009                                         struct device_attribute *devattr,
1010                                         char *buf)
1011 {
1012         struct adt7475_data *data = adt7475_update_device(dev);
1013
1014         if (IS_ERR(data))
1015                 return PTR_ERR(data);
1016
1017         return sprintf(buf, "%d\n", !!(data->config4 & CONFIG4_MAXDUTY));
1018 }
1019
1020 static ssize_t pwm_use_point2_pwm_at_crit_store(struct device *dev,
1021                                         struct device_attribute *devattr,
1022                                         const char *buf, size_t count)
1023 {
1024         struct i2c_client *client = to_i2c_client(dev);
1025         struct adt7475_data *data = i2c_get_clientdata(client);
1026         long val;
1027
1028         if (kstrtol(buf, 10, &val))
1029                 return -EINVAL;
1030         if (val != 0 && val != 1)
1031                 return -EINVAL;
1032
1033         mutex_lock(&data->lock);
1034         data->config4 = i2c_smbus_read_byte_data(client, REG_CONFIG4);
1035         if (val)
1036                 data->config4 |= CONFIG4_MAXDUTY;
1037         else
1038                 data->config4 &= ~CONFIG4_MAXDUTY;
1039         i2c_smbus_write_byte_data(client, REG_CONFIG4, data->config4);
1040         mutex_unlock(&data->lock);
1041
1042         return count;
1043 }
1044
1045 static ssize_t vrm_show(struct device *dev, struct device_attribute *devattr,
1046                         char *buf)
1047 {
1048         struct adt7475_data *data = dev_get_drvdata(dev);
1049         return sprintf(buf, "%d\n", (int)data->vrm);
1050 }
1051
1052 static ssize_t vrm_store(struct device *dev, struct device_attribute *devattr,
1053                          const char *buf, size_t count)
1054 {
1055         struct adt7475_data *data = dev_get_drvdata(dev);
1056         long val;
1057
1058         if (kstrtol(buf, 10, &val))
1059                 return -EINVAL;
1060         if (val < 0 || val > 255)
1061                 return -EINVAL;
1062         data->vrm = val;
1063
1064         return count;
1065 }
1066
1067 static ssize_t cpu0_vid_show(struct device *dev,
1068                              struct device_attribute *devattr, char *buf)
1069 {
1070         struct adt7475_data *data = adt7475_update_device(dev);
1071
1072         if (IS_ERR(data))
1073                 return PTR_ERR(data);
1074
1075         return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
1076 }
1077
1078 static SENSOR_DEVICE_ATTR_2(in0_input, S_IRUGO, show_voltage, NULL, INPUT, 0);
1079 static SENSOR_DEVICE_ATTR_2(in0_max, S_IRUGO | S_IWUSR, show_voltage,
1080                             set_voltage, MAX, 0);
1081 static SENSOR_DEVICE_ATTR_2(in0_min, S_IRUGO | S_IWUSR, show_voltage,
1082                             set_voltage, MIN, 0);
1083 static SENSOR_DEVICE_ATTR_2(in0_alarm, S_IRUGO, show_voltage, NULL, ALARM, 0);
1084 static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_voltage, NULL, INPUT, 1);
1085 static SENSOR_DEVICE_ATTR_2(in1_max, S_IRUGO | S_IWUSR, show_voltage,
1086                             set_voltage, MAX, 1);
1087 static SENSOR_DEVICE_ATTR_2(in1_min, S_IRUGO | S_IWUSR, show_voltage,
1088                             set_voltage, MIN, 1);
1089 static SENSOR_DEVICE_ATTR_2(in1_alarm, S_IRUGO, show_voltage, NULL, ALARM, 1);
1090 static SENSOR_DEVICE_ATTR_2(in2_input, S_IRUGO, show_voltage, NULL, INPUT, 2);
1091 static SENSOR_DEVICE_ATTR_2(in2_max, S_IRUGO | S_IWUSR, show_voltage,
1092                             set_voltage, MAX, 2);
1093 static SENSOR_DEVICE_ATTR_2(in2_min, S_IRUGO | S_IWUSR, show_voltage,
1094                             set_voltage, MIN, 2);
1095 static SENSOR_DEVICE_ATTR_2(in2_alarm, S_IRUGO, show_voltage, NULL, ALARM, 2);
1096 static SENSOR_DEVICE_ATTR_2(in3_input, S_IRUGO, show_voltage, NULL, INPUT, 3);
1097 static SENSOR_DEVICE_ATTR_2(in3_max, S_IRUGO | S_IWUSR, show_voltage,
1098                             set_voltage, MAX, 3);
1099 static SENSOR_DEVICE_ATTR_2(in3_min, S_IRUGO | S_IWUSR, show_voltage,
1100                             set_voltage, MIN, 3);
1101 static SENSOR_DEVICE_ATTR_2(in3_alarm, S_IRUGO, show_voltage, NULL, ALARM, 3);
1102 static SENSOR_DEVICE_ATTR_2(in4_input, S_IRUGO, show_voltage, NULL, INPUT, 4);
1103 static SENSOR_DEVICE_ATTR_2(in4_max, S_IRUGO | S_IWUSR, show_voltage,
1104                             set_voltage, MAX, 4);
1105 static SENSOR_DEVICE_ATTR_2(in4_min, S_IRUGO | S_IWUSR, show_voltage,
1106                             set_voltage, MIN, 4);
1107 static SENSOR_DEVICE_ATTR_2(in4_alarm, S_IRUGO, show_voltage, NULL, ALARM, 8);
1108 static SENSOR_DEVICE_ATTR_2(in5_input, S_IRUGO, show_voltage, NULL, INPUT, 5);
1109 static SENSOR_DEVICE_ATTR_2(in5_max, S_IRUGO | S_IWUSR, show_voltage,
1110                             set_voltage, MAX, 5);
1111 static SENSOR_DEVICE_ATTR_2(in5_min, S_IRUGO | S_IWUSR, show_voltage,
1112                             set_voltage, MIN, 5);
1113 static SENSOR_DEVICE_ATTR_2(in5_alarm, S_IRUGO, show_voltage, NULL, ALARM, 31);
1114 static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, INPUT, 0);
1115 static SENSOR_DEVICE_ATTR_2(temp1_alarm, S_IRUGO, show_temp, NULL, ALARM, 0);
1116 static SENSOR_DEVICE_ATTR_2(temp1_fault, S_IRUGO, show_temp, NULL, FAULT, 0);
1117 static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
1118                             MAX, 0);
1119 static SENSOR_DEVICE_ATTR_2(temp1_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
1120                             MIN, 0);
1121 static SENSOR_DEVICE_ATTR_2(temp1_offset, S_IRUGO | S_IWUSR, show_temp,
1122                             set_temp, OFFSET, 0);
1123 static SENSOR_DEVICE_ATTR_2(temp1_auto_point1_temp, S_IRUGO | S_IWUSR,
1124                             show_temp, set_temp, AUTOMIN, 0);
1125 static SENSOR_DEVICE_ATTR_2(temp1_auto_point2_temp, S_IRUGO | S_IWUSR,
1126                             show_point2, set_point2, 0, 0);
1127 static SENSOR_DEVICE_ATTR_2(temp1_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
1128                             THERM, 0);
1129 static SENSOR_DEVICE_ATTR_2(temp1_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
1130                             set_temp, HYSTERSIS, 0);
1131 static SENSOR_DEVICE_ATTR_2(temp1_smoothing, S_IRUGO | S_IWUSR, show_temp_st,
1132                             set_temp_st, 0, 0);
1133 static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, INPUT, 1);
1134 static SENSOR_DEVICE_ATTR_2(temp2_alarm, S_IRUGO, show_temp, NULL, ALARM, 1);
1135 static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
1136                             MAX, 1);
1137 static SENSOR_DEVICE_ATTR_2(temp2_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
1138                             MIN, 1);
1139 static SENSOR_DEVICE_ATTR_2(temp2_offset, S_IRUGO | S_IWUSR, show_temp,
1140                             set_temp, OFFSET, 1);
1141 static SENSOR_DEVICE_ATTR_2(temp2_auto_point1_temp, S_IRUGO | S_IWUSR,
1142                             show_temp, set_temp, AUTOMIN, 1);
1143 static SENSOR_DEVICE_ATTR_2(temp2_auto_point2_temp, S_IRUGO | S_IWUSR,
1144                             show_point2, set_point2, 0, 1);
1145 static SENSOR_DEVICE_ATTR_2(temp2_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
1146                             THERM, 1);
1147 static SENSOR_DEVICE_ATTR_2(temp2_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
1148                             set_temp, HYSTERSIS, 1);
1149 static SENSOR_DEVICE_ATTR_2(temp2_smoothing, S_IRUGO | S_IWUSR, show_temp_st,
1150                             set_temp_st, 0, 1);
1151 static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, INPUT, 2);
1152 static SENSOR_DEVICE_ATTR_2(temp3_alarm, S_IRUGO, show_temp, NULL, ALARM, 2);
1153 static SENSOR_DEVICE_ATTR_2(temp3_fault, S_IRUGO, show_temp, NULL, FAULT, 2);
1154 static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
1155                             MAX, 2);
1156 static SENSOR_DEVICE_ATTR_2(temp3_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
1157                             MIN, 2);
1158 static SENSOR_DEVICE_ATTR_2(temp3_offset, S_IRUGO | S_IWUSR, show_temp,
1159                             set_temp, OFFSET, 2);
1160 static SENSOR_DEVICE_ATTR_2(temp3_auto_point1_temp, S_IRUGO | S_IWUSR,
1161                             show_temp, set_temp, AUTOMIN, 2);
1162 static SENSOR_DEVICE_ATTR_2(temp3_auto_point2_temp, S_IRUGO | S_IWUSR,
1163                             show_point2, set_point2, 0, 2);
1164 static SENSOR_DEVICE_ATTR_2(temp3_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
1165                             THERM, 2);
1166 static SENSOR_DEVICE_ATTR_2(temp3_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
1167                             set_temp, HYSTERSIS, 2);
1168 static SENSOR_DEVICE_ATTR_2(temp3_smoothing, S_IRUGO | S_IWUSR, show_temp_st,
1169                             set_temp_st, 0, 2);
1170 static SENSOR_DEVICE_ATTR_2(fan1_input, S_IRUGO, show_tach, NULL, INPUT, 0);
1171 static SENSOR_DEVICE_ATTR_2(fan1_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
1172                             MIN, 0);
1173 static SENSOR_DEVICE_ATTR_2(fan1_alarm, S_IRUGO, show_tach, NULL, ALARM, 0);
1174 static SENSOR_DEVICE_ATTR_2(fan2_input, S_IRUGO, show_tach, NULL, INPUT, 1);
1175 static SENSOR_DEVICE_ATTR_2(fan2_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
1176                             MIN, 1);
1177 static SENSOR_DEVICE_ATTR_2(fan2_alarm, S_IRUGO, show_tach, NULL, ALARM, 1);
1178 static SENSOR_DEVICE_ATTR_2(fan3_input, S_IRUGO, show_tach, NULL, INPUT, 2);
1179 static SENSOR_DEVICE_ATTR_2(fan3_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
1180                             MIN, 2);
1181 static SENSOR_DEVICE_ATTR_2(fan3_alarm, S_IRUGO, show_tach, NULL, ALARM, 2);
1182 static SENSOR_DEVICE_ATTR_2(fan4_input, S_IRUGO, show_tach, NULL, INPUT, 3);
1183 static SENSOR_DEVICE_ATTR_2(fan4_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
1184                             MIN, 3);
1185 static SENSOR_DEVICE_ATTR_2(fan4_alarm, S_IRUGO, show_tach, NULL, ALARM, 3);
1186 static SENSOR_DEVICE_ATTR_2(pwm1, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
1187                             0);
1188 static SENSOR_DEVICE_ATTR_2(pwm1_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
1189                             set_pwmfreq, INPUT, 0);
1190 static SENSOR_DEVICE_ATTR_2(pwm1_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
1191                             set_pwmctrl, INPUT, 0);
1192 static SENSOR_DEVICE_ATTR_2(pwm1_auto_channels_temp, S_IRUGO | S_IWUSR,
1193                             show_pwmchan, set_pwmchan, INPUT, 0);
1194 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
1195                             set_pwm, MIN, 0);
1196 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
1197                             set_pwm, MAX, 0);
1198 static SENSOR_DEVICE_ATTR_2(pwm1_stall_disable, S_IRUGO | S_IWUSR,
1199                             show_stall_disable, set_stall_disable, 0, 0);
1200 static SENSOR_DEVICE_ATTR_2(pwm2, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
1201                             1);
1202 static SENSOR_DEVICE_ATTR_2(pwm2_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
1203                             set_pwmfreq, INPUT, 1);
1204 static SENSOR_DEVICE_ATTR_2(pwm2_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
1205                             set_pwmctrl, INPUT, 1);
1206 static SENSOR_DEVICE_ATTR_2(pwm2_auto_channels_temp, S_IRUGO | S_IWUSR,
1207                             show_pwmchan, set_pwmchan, INPUT, 1);
1208 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
1209                             set_pwm, MIN, 1);
1210 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
1211                             set_pwm, MAX, 1);
1212 static SENSOR_DEVICE_ATTR_2(pwm2_stall_disable, S_IRUGO | S_IWUSR,
1213                             show_stall_disable, set_stall_disable, 0, 1);
1214 static SENSOR_DEVICE_ATTR_2(pwm3, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
1215                             2);
1216 static SENSOR_DEVICE_ATTR_2(pwm3_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
1217                             set_pwmfreq, INPUT, 2);
1218 static SENSOR_DEVICE_ATTR_2(pwm3_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
1219                             set_pwmctrl, INPUT, 2);
1220 static SENSOR_DEVICE_ATTR_2(pwm3_auto_channels_temp, S_IRUGO | S_IWUSR,
1221                             show_pwmchan, set_pwmchan, INPUT, 2);
1222 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
1223                             set_pwm, MIN, 2);
1224 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
1225                             set_pwm, MAX, 2);
1226 static SENSOR_DEVICE_ATTR_2(pwm3_stall_disable, S_IRUGO | S_IWUSR,
1227                             show_stall_disable, set_stall_disable, 0, 2);
1228
1229 /* Non-standard name, might need revisiting */
1230 static DEVICE_ATTR_RW(pwm_use_point2_pwm_at_crit);
1231
1232 static DEVICE_ATTR_RW(vrm);
1233 static DEVICE_ATTR_RO(cpu0_vid);
1234
1235 static struct attribute *adt7475_attrs[] = {
1236         &sensor_dev_attr_in1_input.dev_attr.attr,
1237         &sensor_dev_attr_in1_max.dev_attr.attr,
1238         &sensor_dev_attr_in1_min.dev_attr.attr,
1239         &sensor_dev_attr_in1_alarm.dev_attr.attr,
1240         &sensor_dev_attr_in2_input.dev_attr.attr,
1241         &sensor_dev_attr_in2_max.dev_attr.attr,
1242         &sensor_dev_attr_in2_min.dev_attr.attr,
1243         &sensor_dev_attr_in2_alarm.dev_attr.attr,
1244         &sensor_dev_attr_temp1_input.dev_attr.attr,
1245         &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1246         &sensor_dev_attr_temp1_fault.dev_attr.attr,
1247         &sensor_dev_attr_temp1_max.dev_attr.attr,
1248         &sensor_dev_attr_temp1_min.dev_attr.attr,
1249         &sensor_dev_attr_temp1_offset.dev_attr.attr,
1250         &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr,
1251         &sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr,
1252         &sensor_dev_attr_temp1_crit.dev_attr.attr,
1253         &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
1254         &sensor_dev_attr_temp1_smoothing.dev_attr.attr,
1255         &sensor_dev_attr_temp2_input.dev_attr.attr,
1256         &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1257         &sensor_dev_attr_temp2_max.dev_attr.attr,
1258         &sensor_dev_attr_temp2_min.dev_attr.attr,
1259         &sensor_dev_attr_temp2_offset.dev_attr.attr,
1260         &sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr,
1261         &sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr,
1262         &sensor_dev_attr_temp2_crit.dev_attr.attr,
1263         &sensor_dev_attr_temp2_crit_hyst.dev_attr.attr,
1264         &sensor_dev_attr_temp2_smoothing.dev_attr.attr,
1265         &sensor_dev_attr_temp3_input.dev_attr.attr,
1266         &sensor_dev_attr_temp3_fault.dev_attr.attr,
1267         &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1268         &sensor_dev_attr_temp3_max.dev_attr.attr,
1269         &sensor_dev_attr_temp3_min.dev_attr.attr,
1270         &sensor_dev_attr_temp3_offset.dev_attr.attr,
1271         &sensor_dev_attr_temp3_auto_point1_temp.dev_attr.attr,
1272         &sensor_dev_attr_temp3_auto_point2_temp.dev_attr.attr,
1273         &sensor_dev_attr_temp3_crit.dev_attr.attr,
1274         &sensor_dev_attr_temp3_crit_hyst.dev_attr.attr,
1275         &sensor_dev_attr_temp3_smoothing.dev_attr.attr,
1276         &sensor_dev_attr_fan1_input.dev_attr.attr,
1277         &sensor_dev_attr_fan1_min.dev_attr.attr,
1278         &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1279         &sensor_dev_attr_fan2_input.dev_attr.attr,
1280         &sensor_dev_attr_fan2_min.dev_attr.attr,
1281         &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1282         &sensor_dev_attr_fan3_input.dev_attr.attr,
1283         &sensor_dev_attr_fan3_min.dev_attr.attr,
1284         &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1285         &sensor_dev_attr_pwm1.dev_attr.attr,
1286         &sensor_dev_attr_pwm1_freq.dev_attr.attr,
1287         &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1288         &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
1289         &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1290         &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1291         &sensor_dev_attr_pwm1_stall_disable.dev_attr.attr,
1292         &sensor_dev_attr_pwm3.dev_attr.attr,
1293         &sensor_dev_attr_pwm3_freq.dev_attr.attr,
1294         &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1295         &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
1296         &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1297         &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1298         &sensor_dev_attr_pwm3_stall_disable.dev_attr.attr,
1299         &dev_attr_pwm_use_point2_pwm_at_crit.attr,
1300         NULL,
1301 };
1302
1303 static struct attribute *fan4_attrs[] = {
1304         &sensor_dev_attr_fan4_input.dev_attr.attr,
1305         &sensor_dev_attr_fan4_min.dev_attr.attr,
1306         &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1307         NULL
1308 };
1309
1310 static struct attribute *pwm2_attrs[] = {
1311         &sensor_dev_attr_pwm2.dev_attr.attr,
1312         &sensor_dev_attr_pwm2_freq.dev_attr.attr,
1313         &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1314         &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
1315         &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1316         &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1317         &sensor_dev_attr_pwm2_stall_disable.dev_attr.attr,
1318         NULL
1319 };
1320
1321 static struct attribute *in0_attrs[] = {
1322         &sensor_dev_attr_in0_input.dev_attr.attr,
1323         &sensor_dev_attr_in0_max.dev_attr.attr,
1324         &sensor_dev_attr_in0_min.dev_attr.attr,
1325         &sensor_dev_attr_in0_alarm.dev_attr.attr,
1326         NULL
1327 };
1328
1329 static struct attribute *in3_attrs[] = {
1330         &sensor_dev_attr_in3_input.dev_attr.attr,
1331         &sensor_dev_attr_in3_max.dev_attr.attr,
1332         &sensor_dev_attr_in3_min.dev_attr.attr,
1333         &sensor_dev_attr_in3_alarm.dev_attr.attr,
1334         NULL
1335 };
1336
1337 static struct attribute *in4_attrs[] = {
1338         &sensor_dev_attr_in4_input.dev_attr.attr,
1339         &sensor_dev_attr_in4_max.dev_attr.attr,
1340         &sensor_dev_attr_in4_min.dev_attr.attr,
1341         &sensor_dev_attr_in4_alarm.dev_attr.attr,
1342         NULL
1343 };
1344
1345 static struct attribute *in5_attrs[] = {
1346         &sensor_dev_attr_in5_input.dev_attr.attr,
1347         &sensor_dev_attr_in5_max.dev_attr.attr,
1348         &sensor_dev_attr_in5_min.dev_attr.attr,
1349         &sensor_dev_attr_in5_alarm.dev_attr.attr,
1350         NULL
1351 };
1352
1353 static struct attribute *vid_attrs[] = {
1354         &dev_attr_cpu0_vid.attr,
1355         &dev_attr_vrm.attr,
1356         NULL
1357 };
1358
1359 static const struct attribute_group adt7475_attr_group = { .attrs = adt7475_attrs };
1360 static const struct attribute_group fan4_attr_group = { .attrs = fan4_attrs };
1361 static const struct attribute_group pwm2_attr_group = { .attrs = pwm2_attrs };
1362 static const struct attribute_group in0_attr_group = { .attrs = in0_attrs };
1363 static const struct attribute_group in3_attr_group = { .attrs = in3_attrs };
1364 static const struct attribute_group in4_attr_group = { .attrs = in4_attrs };
1365 static const struct attribute_group in5_attr_group = { .attrs = in5_attrs };
1366 static const struct attribute_group vid_attr_group = { .attrs = vid_attrs };
1367
1368 static int adt7475_detect(struct i2c_client *client,
1369                           struct i2c_board_info *info)
1370 {
1371         struct i2c_adapter *adapter = client->adapter;
1372         int vendid, devid, devid2;
1373         const char *name;
1374
1375         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1376                 return -ENODEV;
1377
1378         vendid = adt7475_read(REG_VENDID);
1379         devid2 = adt7475_read(REG_DEVID2);
1380         if (vendid != 0x41 ||           /* Analog Devices */
1381             (devid2 & 0xf8) != 0x68)
1382                 return -ENODEV;
1383
1384         devid = adt7475_read(REG_DEVID);
1385         if (devid == 0x73)
1386                 name = "adt7473";
1387         else if (devid == 0x75 && client->addr == 0x2e)
1388                 name = "adt7475";
1389         else if (devid == 0x76)
1390                 name = "adt7476";
1391         else if ((devid2 & 0xfc) == 0x6c)
1392                 name = "adt7490";
1393         else {
1394                 dev_dbg(&adapter->dev,
1395                         "Couldn't detect an ADT7473/75/76/90 part at "
1396                         "0x%02x\n", (unsigned int)client->addr);
1397                 return -ENODEV;
1398         }
1399
1400         strlcpy(info->type, name, I2C_NAME_SIZE);
1401
1402         return 0;
1403 }
1404
1405 static void adt7475_remove_files(struct i2c_client *client,
1406                                  struct adt7475_data *data)
1407 {
1408         sysfs_remove_group(&client->dev.kobj, &adt7475_attr_group);
1409         if (data->has_fan4)
1410                 sysfs_remove_group(&client->dev.kobj, &fan4_attr_group);
1411         if (data->has_pwm2)
1412                 sysfs_remove_group(&client->dev.kobj, &pwm2_attr_group);
1413         if (data->has_voltage & (1 << 0))
1414                 sysfs_remove_group(&client->dev.kobj, &in0_attr_group);
1415         if (data->has_voltage & (1 << 3))
1416                 sysfs_remove_group(&client->dev.kobj, &in3_attr_group);
1417         if (data->has_voltage & (1 << 4))
1418                 sysfs_remove_group(&client->dev.kobj, &in4_attr_group);
1419         if (data->has_voltage & (1 << 5))
1420                 sysfs_remove_group(&client->dev.kobj, &in5_attr_group);
1421         if (data->has_vid)
1422                 sysfs_remove_group(&client->dev.kobj, &vid_attr_group);
1423 }
1424
1425 static int adt7475_update_limits(struct i2c_client *client)
1426 {
1427         struct adt7475_data *data = i2c_get_clientdata(client);
1428         int i;
1429         int ret;
1430
1431         ret = adt7475_read(REG_CONFIG4);
1432         if (ret < 0)
1433                 return ret;
1434         data->config4 = ret;
1435
1436         ret = adt7475_read(REG_CONFIG5);
1437         if (ret < 0)
1438                 return ret;
1439         data->config5 = ret;
1440
1441         for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
1442                 if (!(data->has_voltage & (1 << i)))
1443                         continue;
1444                 /* Adjust values so they match the input precision */
1445                 ret = adt7475_read(VOLTAGE_MIN_REG(i));
1446                 if (ret < 0)
1447                         return ret;
1448                 data->voltage[MIN][i] = ret << 2;
1449
1450                 ret = adt7475_read(VOLTAGE_MAX_REG(i));
1451                 if (ret < 0)
1452                         return ret;
1453                 data->voltage[MAX][i] = ret << 2;
1454         }
1455
1456         if (data->has_voltage & (1 << 5)) {
1457                 ret = adt7475_read(REG_VTT_MIN);
1458                 if (ret < 0)
1459                         return ret;
1460                 data->voltage[MIN][5] = ret << 2;
1461
1462                 ret = adt7475_read(REG_VTT_MAX);
1463                 if (ret < 0)
1464                         return ret;
1465                 data->voltage[MAX][5] = ret << 2;
1466         }
1467
1468         for (i = 0; i < ADT7475_TEMP_COUNT; i++) {
1469                 /* Adjust values so they match the input precision */
1470                 ret = adt7475_read(TEMP_MIN_REG(i));
1471                 if (ret < 0)
1472                         return ret;
1473                 data->temp[MIN][i] = ret << 2;
1474
1475                 ret = adt7475_read(TEMP_MAX_REG(i));
1476                 if (ret < 0)
1477                         return ret;
1478                 data->temp[MAX][i] = ret << 2;
1479
1480                 ret = adt7475_read(TEMP_TMIN_REG(i));
1481                 if (ret < 0)
1482                         return ret;
1483                 data->temp[AUTOMIN][i] = ret << 2;
1484
1485                 ret = adt7475_read(TEMP_THERM_REG(i));
1486                 if (ret < 0)
1487                         return ret;
1488                 data->temp[THERM][i] = ret << 2;
1489
1490                 ret = adt7475_read(TEMP_OFFSET_REG(i));
1491                 if (ret < 0)
1492                         return ret;
1493                 data->temp[OFFSET][i] = ret;
1494         }
1495         adt7475_read_hystersis(client);
1496
1497         for (i = 0; i < ADT7475_TACH_COUNT; i++) {
1498                 if (i == 3 && !data->has_fan4)
1499                         continue;
1500                 ret = adt7475_read_word(client, TACH_MIN_REG(i));
1501                 if (ret < 0)
1502                         return ret;
1503                 data->tach[MIN][i] = ret;
1504         }
1505
1506         for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1507                 if (i == 1 && !data->has_pwm2)
1508                         continue;
1509                 ret = adt7475_read(PWM_MAX_REG(i));
1510                 if (ret < 0)
1511                         return ret;
1512                 data->pwm[MAX][i] = ret;
1513
1514                 ret = adt7475_read(PWM_MIN_REG(i));
1515                 if (ret < 0)
1516                         return ret;
1517                 data->pwm[MIN][i] = ret;
1518                 /* Set the channel and control information */
1519                 adt7475_read_pwm(client, i);
1520         }
1521
1522         ret = adt7475_read(TEMP_TRANGE_REG(0));
1523         if (ret < 0)
1524                 return ret;
1525         data->range[0] = ret;
1526
1527         ret = adt7475_read(TEMP_TRANGE_REG(1));
1528         if (ret < 0)
1529                 return ret;
1530         data->range[1] = ret;
1531
1532         ret = adt7475_read(TEMP_TRANGE_REG(2));
1533         if (ret < 0)
1534                 return ret;
1535         data->range[2] = ret;
1536
1537         return 0;
1538 }
1539
1540 static int adt7475_probe(struct i2c_client *client,
1541                          const struct i2c_device_id *id)
1542 {
1543         enum chips chip;
1544         static const char * const names[] = {
1545                 [adt7473] = "ADT7473",
1546                 [adt7475] = "ADT7475",
1547                 [adt7476] = "ADT7476",
1548                 [adt7490] = "ADT7490",
1549         };
1550
1551         struct adt7475_data *data;
1552         int i, ret = 0, revision;
1553         u8 config2, config3;
1554
1555         data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
1556         if (data == NULL)
1557                 return -ENOMEM;
1558
1559         mutex_init(&data->lock);
1560         i2c_set_clientdata(client, data);
1561
1562         if (client->dev.of_node)
1563                 chip = (enum chips)of_device_get_match_data(&client->dev);
1564         else
1565                 chip = id->driver_data;
1566
1567         /* Initialize device-specific values */
1568         switch (chip) {
1569         case adt7476:
1570                 data->has_voltage = 0x0e;       /* in1 to in3 */
1571                 revision = adt7475_read(REG_DEVID2) & 0x07;
1572                 break;
1573         case adt7490:
1574                 data->has_voltage = 0x3e;       /* in1 to in5 */
1575                 revision = adt7475_read(REG_DEVID2) & 0x03;
1576                 if (revision == 0x03)
1577                         revision += adt7475_read(REG_DEVREV2);
1578                 break;
1579         default:
1580                 data->has_voltage = 0x06;       /* in1, in2 */
1581                 revision = adt7475_read(REG_DEVID2) & 0x07;
1582         }
1583
1584         config3 = adt7475_read(REG_CONFIG3);
1585         /* Pin PWM2 may alternatively be used for ALERT output */
1586         if (!(config3 & CONFIG3_SMBALERT))
1587                 data->has_pwm2 = 1;
1588         /* Meaning of this bit is inverted for the ADT7473-1 */
1589         if (id->driver_data == adt7473 && revision >= 1)
1590                 data->has_pwm2 = !data->has_pwm2;
1591
1592         data->config4 = adt7475_read(REG_CONFIG4);
1593         /* Pin TACH4 may alternatively be used for THERM */
1594         if ((data->config4 & CONFIG4_PINFUNC) == 0x0)
1595                 data->has_fan4 = 1;
1596
1597         /*
1598          * THERM configuration is more complex on the ADT7476 and ADT7490,
1599          * because 2 different pins (TACH4 and +2.5 Vin) can be used for
1600          * this function
1601          */
1602         if (id->driver_data == adt7490) {
1603                 if ((data->config4 & CONFIG4_PINFUNC) == 0x1 &&
1604                     !(config3 & CONFIG3_THERM))
1605                         data->has_fan4 = 1;
1606         }
1607         if (id->driver_data == adt7476 || id->driver_data == adt7490) {
1608                 if (!(config3 & CONFIG3_THERM) ||
1609                     (data->config4 & CONFIG4_PINFUNC) == 0x1)
1610                         data->has_voltage |= (1 << 0);          /* in0 */
1611         }
1612
1613         /*
1614          * On the ADT7476, the +12V input pin may instead be used as VID5,
1615          * and VID pins may alternatively be used as GPIO
1616          */
1617         if (id->driver_data == adt7476) {
1618                 u8 vid = adt7475_read(REG_VID);
1619                 if (!(vid & VID_VIDSEL))
1620                         data->has_voltage |= (1 << 4);          /* in4 */
1621
1622                 data->has_vid = !(adt7475_read(REG_CONFIG5) & CONFIG5_VIDGPIO);
1623         }
1624
1625         /* Voltage attenuators can be bypassed, globally or individually */
1626         config2 = adt7475_read(REG_CONFIG2);
1627         if (config2 & CONFIG2_ATTN) {
1628                 data->bypass_attn = (0x3 << 3) | 0x3;
1629         } else {
1630                 data->bypass_attn = ((data->config4 & CONFIG4_ATTN_IN10) >> 4) |
1631                                     ((data->config4 & CONFIG4_ATTN_IN43) >> 3);
1632         }
1633         data->bypass_attn &= data->has_voltage;
1634
1635         /*
1636          * Call adt7475_read_pwm for all pwm's as this will reprogram any
1637          * pwm's which are disabled to manual mode with 0% duty cycle
1638          */
1639         for (i = 0; i < ADT7475_PWM_COUNT; i++)
1640                 adt7475_read_pwm(client, i);
1641
1642         /* Start monitoring */
1643         switch (chip) {
1644         case adt7475:
1645         case adt7476:
1646                 i2c_smbus_write_byte_data(client, REG_CONFIG1,
1647                                           adt7475_read(REG_CONFIG1) | 0x01);
1648                 break;
1649         default:
1650                 break;
1651         }
1652
1653         ret = sysfs_create_group(&client->dev.kobj, &adt7475_attr_group);
1654         if (ret)
1655                 return ret;
1656
1657         /* Features that can be disabled individually */
1658         if (data->has_fan4) {
1659                 ret = sysfs_create_group(&client->dev.kobj, &fan4_attr_group);
1660                 if (ret)
1661                         goto eremove;
1662         }
1663         if (data->has_pwm2) {
1664                 ret = sysfs_create_group(&client->dev.kobj, &pwm2_attr_group);
1665                 if (ret)
1666                         goto eremove;
1667         }
1668         if (data->has_voltage & (1 << 0)) {
1669                 ret = sysfs_create_group(&client->dev.kobj, &in0_attr_group);
1670                 if (ret)
1671                         goto eremove;
1672         }
1673         if (data->has_voltage & (1 << 3)) {
1674                 ret = sysfs_create_group(&client->dev.kobj, &in3_attr_group);
1675                 if (ret)
1676                         goto eremove;
1677         }
1678         if (data->has_voltage & (1 << 4)) {
1679                 ret = sysfs_create_group(&client->dev.kobj, &in4_attr_group);
1680                 if (ret)
1681                         goto eremove;
1682         }
1683         if (data->has_voltage & (1 << 5)) {
1684                 ret = sysfs_create_group(&client->dev.kobj, &in5_attr_group);
1685                 if (ret)
1686                         goto eremove;
1687         }
1688         if (data->has_vid) {
1689                 data->vrm = vid_which_vrm();
1690                 ret = sysfs_create_group(&client->dev.kobj, &vid_attr_group);
1691                 if (ret)
1692                         goto eremove;
1693         }
1694
1695         data->hwmon_dev = hwmon_device_register(&client->dev);
1696         if (IS_ERR(data->hwmon_dev)) {
1697                 ret = PTR_ERR(data->hwmon_dev);
1698                 goto eremove;
1699         }
1700
1701         dev_info(&client->dev, "%s device, revision %d\n",
1702                  names[id->driver_data], revision);
1703         if ((data->has_voltage & 0x11) || data->has_fan4 || data->has_pwm2)
1704                 dev_info(&client->dev, "Optional features:%s%s%s%s%s\n",
1705                          (data->has_voltage & (1 << 0)) ? " in0" : "",
1706                          (data->has_voltage & (1 << 4)) ? " in4" : "",
1707                          data->has_fan4 ? " fan4" : "",
1708                          data->has_pwm2 ? " pwm2" : "",
1709                          data->has_vid ? " vid" : "");
1710         if (data->bypass_attn)
1711                 dev_info(&client->dev, "Bypassing attenuators on:%s%s%s%s\n",
1712                          (data->bypass_attn & (1 << 0)) ? " in0" : "",
1713                          (data->bypass_attn & (1 << 1)) ? " in1" : "",
1714                          (data->bypass_attn & (1 << 3)) ? " in3" : "",
1715                          (data->bypass_attn & (1 << 4)) ? " in4" : "");
1716
1717         /* Limits and settings, should never change update more than once */
1718         ret = adt7475_update_limits(client);
1719         if (ret)
1720                 goto eremove;
1721
1722         return 0;
1723
1724 eremove:
1725         adt7475_remove_files(client, data);
1726         return ret;
1727 }
1728
1729 static int adt7475_remove(struct i2c_client *client)
1730 {
1731         struct adt7475_data *data = i2c_get_clientdata(client);
1732
1733         hwmon_device_unregister(data->hwmon_dev);
1734         adt7475_remove_files(client, data);
1735
1736         return 0;
1737 }
1738
1739 static struct i2c_driver adt7475_driver = {
1740         .class          = I2C_CLASS_HWMON,
1741         .driver = {
1742                 .name   = "adt7475",
1743                 .of_match_table = of_match_ptr(adt7475_of_match),
1744         },
1745         .probe          = adt7475_probe,
1746         .remove         = adt7475_remove,
1747         .id_table       = adt7475_id,
1748         .detect         = adt7475_detect,
1749         .address_list   = normal_i2c,
1750 };
1751
1752 static void adt7475_read_hystersis(struct i2c_client *client)
1753 {
1754         struct adt7475_data *data = i2c_get_clientdata(client);
1755
1756         data->temp[HYSTERSIS][0] = (u16) adt7475_read(REG_REMOTE1_HYSTERSIS);
1757         data->temp[HYSTERSIS][1] = data->temp[HYSTERSIS][0];
1758         data->temp[HYSTERSIS][2] = (u16) adt7475_read(REG_REMOTE2_HYSTERSIS);
1759 }
1760
1761 static void adt7475_read_pwm(struct i2c_client *client, int index)
1762 {
1763         struct adt7475_data *data = i2c_get_clientdata(client);
1764         unsigned int v;
1765
1766         data->pwm[CONTROL][index] = adt7475_read(PWM_CONFIG_REG(index));
1767
1768         /*
1769          * Figure out the internal value for pwmctrl and pwmchan
1770          * based on the current settings
1771          */
1772         v = (data->pwm[CONTROL][index] >> 5) & 7;
1773
1774         if (v == 3)
1775                 data->pwmctl[index] = 0;
1776         else if (v == 7)
1777                 data->pwmctl[index] = 1;
1778         else if (v == 4) {
1779                 /*
1780                  * The fan is disabled - we don't want to
1781                  * support that, so change to manual mode and
1782                  * set the duty cycle to 0 instead
1783                  */
1784                 data->pwm[INPUT][index] = 0;
1785                 data->pwm[CONTROL][index] &= ~0xE0;
1786                 data->pwm[CONTROL][index] |= (7 << 5);
1787
1788                 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
1789                                           data->pwm[INPUT][index]);
1790
1791                 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
1792                                           data->pwm[CONTROL][index]);
1793
1794                 data->pwmctl[index] = 1;
1795         } else {
1796                 data->pwmctl[index] = 2;
1797
1798                 switch (v) {
1799                 case 0:
1800                         data->pwmchan[index] = 1;
1801                         break;
1802                 case 1:
1803                         data->pwmchan[index] = 2;
1804                         break;
1805                 case 2:
1806                         data->pwmchan[index] = 4;
1807                         break;
1808                 case 5:
1809                         data->pwmchan[index] = 6;
1810                         break;
1811                 case 6:
1812                         data->pwmchan[index] = 7;
1813                         break;
1814                 }
1815         }
1816 }
1817
1818 static int adt7475_update_measure(struct device *dev)
1819 {
1820         struct i2c_client *client = to_i2c_client(dev);
1821         struct adt7475_data *data = i2c_get_clientdata(client);
1822         u16 ext;
1823         int i;
1824         int ret;
1825
1826         ret = adt7475_read(REG_STATUS2);
1827         if (ret < 0)
1828                 return ret;
1829         data->alarms = ret << 8;
1830
1831         ret = adt7475_read(REG_STATUS1);
1832         if (ret < 0)
1833                 return ret;
1834         data->alarms |= ret;
1835
1836         ret = adt7475_read(REG_EXTEND2);
1837         if (ret < 0)
1838                 return ret;
1839
1840         ext = (ret << 8);
1841
1842         ret = adt7475_read(REG_EXTEND1);
1843         if (ret < 0)
1844                 return ret;
1845
1846         ext |= ret;
1847
1848         for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
1849                 if (!(data->has_voltage & (1 << i)))
1850                         continue;
1851                 ret = adt7475_read(VOLTAGE_REG(i));
1852                 if (ret < 0)
1853                         return ret;
1854                 data->voltage[INPUT][i] =
1855                         (ret << 2) |
1856                         ((ext >> (i * 2)) & 3);
1857         }
1858
1859         for (i = 0; i < ADT7475_TEMP_COUNT; i++) {
1860                 ret = adt7475_read(TEMP_REG(i));
1861                 if (ret < 0)
1862                         return ret;
1863                 data->temp[INPUT][i] =
1864                         (ret << 2) |
1865                         ((ext >> ((i + 5) * 2)) & 3);
1866         }
1867
1868         if (data->has_voltage & (1 << 5)) {
1869                 ret = adt7475_read(REG_STATUS4);
1870                 if (ret < 0)
1871                         return ret;
1872                 data->alarms |= ret << 24;
1873
1874                 ret = adt7475_read(REG_EXTEND3);
1875                 if (ret < 0)
1876                         return ret;
1877                 ext = ret;
1878
1879                 ret = adt7475_read(REG_VTT);
1880                 if (ret < 0)
1881                         return ret;
1882                 data->voltage[INPUT][5] = ret << 2 |
1883                         ((ext >> 4) & 3);
1884         }
1885
1886         for (i = 0; i < ADT7475_TACH_COUNT; i++) {
1887                 if (i == 3 && !data->has_fan4)
1888                         continue;
1889                 ret = adt7475_read_word(client, TACH_REG(i));
1890                 if (ret < 0)
1891                         return ret;
1892                 data->tach[INPUT][i] = ret;
1893         }
1894
1895         /* Updated by hw when in auto mode */
1896         for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1897                 if (i == 1 && !data->has_pwm2)
1898                         continue;
1899                 ret = adt7475_read(PWM_REG(i));
1900                 if (ret < 0)
1901                         return ret;
1902                 data->pwm[INPUT][i] = ret;
1903         }
1904
1905         if (data->has_vid) {
1906                 ret = adt7475_read(REG_VID);
1907                 if (ret < 0)
1908                         return ret;
1909                 data->vid = ret & 0x3f;
1910         }
1911
1912         return 0;
1913 }
1914
1915 static struct adt7475_data *adt7475_update_device(struct device *dev)
1916 {
1917         struct i2c_client *client = to_i2c_client(dev);
1918         struct adt7475_data *data = i2c_get_clientdata(client);
1919         int ret;
1920
1921         mutex_lock(&data->lock);
1922
1923         /* Measurement values update every 2 seconds */
1924         if (time_after(jiffies, data->measure_updated + HZ * 2) ||
1925             !data->valid) {
1926                 ret = adt7475_update_measure(dev);
1927                 if (ret) {
1928                         data->valid = false;
1929                         mutex_unlock(&data->lock);
1930                         return ERR_PTR(ret);
1931                 }
1932                 data->measure_updated = jiffies;
1933                 data->valid = true;
1934         }
1935
1936         mutex_unlock(&data->lock);
1937
1938         return data;
1939 }
1940
1941 module_i2c_driver(adt7475_driver);
1942
1943 MODULE_AUTHOR("Advanced Micro Devices, Inc");
1944 MODULE_DESCRIPTION("adt7475 driver");
1945 MODULE_LICENSE("GPL");