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